Unified · Split
| @@ -0,0 +1,3 @@ | ||
| 1 | +[spatch] | |
| 2 | + options = --timeout 200 | |
| 3 | + options = --use-gitgrep | |
| @@ -37,6 +37,7 @@ modules.builtin · 36 unmodified lines | ||
| 37 | 37 | Module.symvers |
| 38 | 38 | *.dwo |
| 39 | 39 | *.su |
| 40 | +*.c.[012]*.* | |
| 40 | 41 | |
| 41 | 42 | # |
| 42 | 43 | # Top-level generic files |
| @@ -66,6 +67,7 @@ Module.symvers · 23 unmodified lines | ||
| 66 | 67 | # |
| 67 | 68 | !.gitignore |
| 68 | 69 | !.mailmap |
| 70 | +!.cocciconfig | |
| 69 | 71 | |
| 70 | 72 | # |
| 71 | 73 | # Generated include files |
| @@ -92,9 +92,17 @@ Krzysztof Kozlowski <krzk@kernel.org> <k.kozlowski.k@gmail.com> · 91 unmodified lines | ||
| 92 | 92 | Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> |
| 93 | 93 | Leonid I Ananiev <leonid.i.ananiev@intel.com> |
| 94 | 94 | Linas Vepstas <linas@austin.ibm.com> |
| 95 | +Linus Lüssing <linus.luessing@c0d3.blue> <linus.luessing@web.de> | |
| 96 | +Linus Lüssing <linus.luessing@c0d3.blue> <linus.luessing@ascom.ch> | |
| 95 | 97 | Mark Brown <broonie@sirena.org.uk> |
| 96 | 98 | Matthieu CASTET <castet.matthieu@free.fr> |
| 97 | −Mauro Carvalho Chehab <mchehab@kernel.org> <maurochehab@gmail.com> <mchehab@infradead.org> <mchehab@redhat.com> <m.chehab@samsung.com> <mchehab@osg.samsung.com> <mchehab@s-opensource.com> | |
| 99 | +Mauro Carvalho Chehab <mchehab@kernel.org> <mchehab@brturbo.com.br> | |
| 100 | +Mauro Carvalho Chehab <mchehab@kernel.org> <maurochehab@gmail.com> | |
| 101 | +Mauro Carvalho Chehab <mchehab@kernel.org> <mchehab@infradead.org> | |
| 102 | +Mauro Carvalho Chehab <mchehab@kernel.org> <mchehab@redhat.com> | |
| 103 | +Mauro Carvalho Chehab <mchehab@kernel.org> <m.chehab@samsung.com> | |
| 104 | +Mauro Carvalho Chehab <mchehab@kernel.org> <mchehab@osg.samsung.com> | |
| 105 | +Mauro Carvalho Chehab <mchehab@kernel.org> <mchehab@s-opensource.com> | |
| 98 | 106 | Matt Ranostay <mranostay@gmail.com> Matthew Ranostay <mranostay@embeddedalley.com> |
| 99 | 107 | Matt Ranostay <mranostay@gmail.com> <matt.ranostay@intel.com> |
| 100 | 108 | Mayuresh Janorkar <mayur@ti.com> |
| @@ -130,7 +138,10 @@ Santosh Shilimkar <santosh.shilimkar@oracle.org> · 29 unmodified lines | ||
| 130 | 138 | Sascha Hauer <s.hauer@pengutronix.de> |
| 131 | 139 | S.Çağlar Onur <caglar@pardus.org.tr> |
| 132 | 140 | Shiraz Hashim <shiraz.linux.kernel@gmail.com> <shiraz.hashim@st.com> |
| 133 | −Shuah Khan <shuah@kernel.org> <shuahkhan@gmail.com> <shuah.khan@hp.com> <shuahkh@osg.samsung.com> <shuah.kh@samsung.com> | |
| 141 | +Shuah Khan <shuah@kernel.org> <shuahkhan@gmail.com> | |
| 142 | +Shuah Khan <shuah@kernel.org> <shuah.khan@hp.com> | |
| 143 | +Shuah Khan <shuah@kernel.org> <shuahkh@osg.samsung.com> | |
| 144 | +Shuah Khan <shuah@kernel.org> <shuah.kh@samsung.com> | |
| 134 | 145 | Simon Kelley <simon@thekelleys.org.uk> |
| 135 | 146 | Stéphane Witzmann <stephane.witzmann@ubpmes.univ-bpclermont.fr> |
| 136 | 147 | Stephen Hemminger <shemminger@osdl.org> |
| @@ -77,3 +77,12 @@ Description: · 76 unmodified lines | ||
| 77 | 77 | Enable/disable the PWM signal. |
| 78 | 78 | 0 is disabled |
| 79 | 79 | 1 is enabled |
| 80 | + | |
| 81 | +What: /sys/class/pwm/pwmchipN/pwmX/capture | |
| 82 | +Date: June 2016 | |
| 83 | +KernelVersion: 4.8 | |
| 84 | +Contact: Lee Jones <lee.jones@linaro.org> | |
| 85 | +Description: | |
| 86 | + Capture information about a PWM signal. The output format is a | |
| 87 | + pair unsigned integers (period and duty cycle), separated by a | |
| 88 | + single space. | |
| @@ -369,35 +369,32 @@ See also dma_map_single(). · 368 unmodified lines | ||
| 369 | 369 | dma_addr_t |
| 370 | 370 | dma_map_single_attrs(struct device *dev, void *cpu_addr, size_t size, |
| 371 | 371 | enum dma_data_direction dir, |
| 372 | − struct dma_attrs *attrs) | |
| 372 | + unsigned long attrs) | |
| 373 | 373 | |
| 374 | 374 | void |
| 375 | 375 | dma_unmap_single_attrs(struct device *dev, dma_addr_t dma_addr, |
| 376 | 376 | size_t size, enum dma_data_direction dir, |
| 377 | − struct dma_attrs *attrs) | |
| 377 | + unsigned long attrs) | |
| 378 | 378 | |
| 379 | 379 | int |
| 380 | 380 | dma_map_sg_attrs(struct device *dev, struct scatterlist *sgl, |
| 381 | 381 | int nents, enum dma_data_direction dir, |
| 382 | − struct dma_attrs *attrs) | |
| 382 | + unsigned long attrs) | |
| 383 | 383 | |
| 384 | 384 | void |
| 385 | 385 | dma_unmap_sg_attrs(struct device *dev, struct scatterlist *sgl, |
| 386 | 386 | int nents, enum dma_data_direction dir, |
| 387 | − struct dma_attrs *attrs) | |
| 387 | + unsigned long attrs) | |
| 388 | 388 | |
| 389 | 389 | The four functions above are just like the counterpart functions |
| 390 | 390 | without the _attrs suffixes, except that they pass an optional |
| 391 | −struct dma_attrs*. | |
| 392 | − | |
| 393 | −struct dma_attrs encapsulates a set of "DMA attributes". For the | |
| 394 | −definition of struct dma_attrs see linux/dma-attrs.h. | |
| 391 | +dma_attrs. | |
| 395 | 392 | |
| 396 | 393 | The interpretation of DMA attributes is architecture-specific, and |
| 397 | 394 | each attribute should be documented in Documentation/DMA-attributes.txt. |
| 398 | 395 | |
| 399 | −If struct dma_attrs* is NULL, the semantics of each of these | |
| 400 | −functions is identical to those of the corresponding function | |
| 396 | +If dma_attrs are 0, the semantics of each of these functions | |
| 397 | +is identical to those of the corresponding function | |
| 401 | 398 | without the _attrs suffix. As a result dma_map_single_attrs() |
| 402 | 399 | can generally replace dma_map_single(), etc. |
| 403 | 400 | |
| @@ -405,15 +402,15 @@ As an example of the use of the *_attrs functions, here's how · 1 unmodified line | ||
| 405 | 402 | you could pass an attribute DMA_ATTR_FOO when mapping memory |
| 406 | 403 | for DMA: |
| 407 | 404 | |
| 408 | −#include <linux/dma-attrs.h> | |
| 409 | −/* DMA_ATTR_FOO should be defined in linux/dma-attrs.h and | |
| 405 | +#include <linux/dma-mapping.h> | |
| 406 | +/* DMA_ATTR_FOO should be defined in linux/dma-mapping.h and | |
| 410 | 407 | * documented in Documentation/DMA-attributes.txt */ |
| 411 | 408 | ... |
| 412 | 409 | |
| 413 | − DEFINE_DMA_ATTRS(attrs); | |
| 414 | − dma_set_attr(DMA_ATTR_FOO, &attrs); | |
| 410 | + unsigned long attr; | |
| 411 | + attr |= DMA_ATTR_FOO; | |
| 415 | 412 | .... |
| 416 | − n = dma_map_sg_attrs(dev, sg, nents, DMA_TO_DEVICE, &attr); | |
| 413 | + n = dma_map_sg_attrs(dev, sg, nents, DMA_TO_DEVICE, attr); | |
| 417 | 414 | .... |
| 418 | 415 | |
| 419 | 416 | Architectures that care about DMA_ATTR_FOO would check for its |
| @@ -422,12 +419,10 @@ routines, e.g.: · 2 unmodified lines | ||
| 422 | 419 | |
| 423 | 420 | void whizco_dma_map_sg_attrs(struct device *dev, dma_addr_t dma_addr, |
| 424 | 421 | size_t size, enum dma_data_direction dir, |
| 425 | − struct dma_attrs *attrs) | |
| 422 | + unsigned long attrs) | |
| 426 | 423 | { |
| 427 | 424 | .... |
| 428 | − int foo = dma_get_attr(DMA_ATTR_FOO, attrs); | |
| 429 | − .... | |
| 430 | − if (foo) | |
| 425 | + if (attrs & DMA_ATTR_FOO) | |
| 431 | 426 | /* twizzle the frobnozzle */ |
| 432 | 427 | .... |
| 433 | 428 | |
| @@ -2,7 +2,7 @@ · 1 unmodified line | ||
| 2 | 2 | ============== |
| 3 | 3 | |
| 4 | 4 | This document describes the semantics of the DMA attributes that are |
| 5 | −defined in linux/dma-attrs.h. | |
| 5 | +defined in linux/dma-mapping.h. | |
| 6 | 6 | |
| 7 | 7 | DMA_ATTR_WRITE_BARRIER |
| 8 | 8 | ---------------------- |
| @@ -6,8 +6,6 @@ · 5 unmodified lines | ||
| 6 | 6 | # To add a new book the only step required is to add the book to the |
| 7 | 7 | # list of DOCBOOKS. |
| 8 | 8 | |
| 9 | −ifeq ($(IGNORE_DOCBOOKS),) | |
| 10 | − | |
| 11 | 9 | DOCBOOKS := z8530book.xml device-drivers.xml \ |
| 12 | 10 | kernel-hacking.xml kernel-locking.xml deviceiobook.xml \ |
| 13 | 11 | writing_usb_driver.xml networking.xml \ |
| @@ -16,10 +14,16 @@ DOCBOOKS := z8530book.xml device-drivers.xml \ · 2 unmodified lines | ||
| 16 | 14 | genericirq.xml s390-drivers.xml uio-howto.xml scsi.xml \ |
| 17 | 15 | 80211.xml debugobjects.xml sh.xml regulator.xml \ |
| 18 | 16 | alsa-driver-api.xml writing-an-alsa-driver.xml \ |
| 19 | − tracepoint.xml gpu.xml media_api.xml w1.xml \ | |
| 17 | + tracepoint.xml w1.xml \ | |
| 20 | 18 | writing_musb_glue_layer.xml crypto-API.xml iio.xml |
| 21 | 19 | |
| 22 | −include Documentation/DocBook/media/Makefile | |
| 20 | +ifeq ($(DOCBOOKS),) | |
| 21 | + | |
| 22 | +# Skip DocBook build if the user explicitly requested no DOCBOOKS. | |
| 23 | +.DEFAULT: | |
| 24 | + @echo " SKIP DocBook $@ target (DOCBOOKS=\"\" specified)." | |
| 25 | + | |
| 26 | +else | |
| 23 | 27 | |
| 24 | 28 | ### |
| 25 | 29 | # The build process is as follows (targets): |
| @@ -49,7 +53,6 @@ pdfdocs: $(PDF) · 23 unmodified lines | ||
| 49 | 53 | HTML := $(sort $(patsubst %.xml, %.html, $(BOOKS))) |
| 50 | 54 | htmldocs: $(HTML) |
| 51 | 55 | $(call cmd,build_main_index) |
| 52 | − $(call install_media_images) | |
| 53 | 56 | |
| 54 | 57 | MAN := $(patsubst %.xml, %.9, $(BOOKS)) |
| 55 | 58 | mandocs: $(MAN) |
| @@ -217,19 +220,7 @@ silent_gen_xml = : · 161 unmodified lines | ||
| 217 | 220 | -e "s/>/\\>/g"; \ |
| 218 | 221 | echo "</programlisting>") > $@ |
| 219 | 222 | |
| 220 | −else | |
| 221 | − | |
| 222 | −# Needed, due to cleanmediadocs | |
| 223 | −include Documentation/DocBook/media/Makefile | |
| 224 | − | |
| 225 | −htmldocs: | |
| 226 | −pdfdocs: | |
| 227 | −psdocs: | |
| 228 | −xmldocs: | |
| 229 | −installmandocs: | |
| 230 | − | |
| 231 | −endif # IGNORE_DOCBOOKS | |
| 232 | − | |
| 223 | +endif # DOCBOOKS="" | |
| 233 | 224 | |
| 234 | 225 | ### |
| 235 | 226 | # Help targets as used by the top-level makefile |
| @@ -246,7 +237,7 @@ dochelp: · 10 unmodified lines | ||
| 246 | 237 | @echo ' make DOCBOOKS="s1.xml s2.xml" [target] Generate only docs s1.xml s2.xml' |
| 247 | 238 | @echo ' valid values for DOCBOOKS are: $(DOCBOOKS)' |
| 248 | 239 | @echo |
| 249 | − @echo " make IGNORE_DOCBOOKS=1 [target] Don't generate docs from Docbook" | |
| 240 | + @echo " make DOCBOOKS=\"\" [target] Don't generate docs from Docbook" | |
| 250 | 241 | @echo ' This is useful to generate only the ReST docs (Sphinx)' |
| 251 | 242 | |
| 252 | 243 | |
| @@ -269,7 +260,7 @@ clean-files := $(DOCBOOKS) \ · 16 unmodified lines | ||
| 269 | 260 | |
| 270 | 261 | clean-dirs := $(patsubst %.xml,%,$(DOCBOOKS)) man |
| 271 | 262 | |
| 272 | −cleandocs: cleanmediadocs | |
| 263 | +cleandocs: | |
| 273 | 264 | $(Q)rm -f $(call objectify, $(clean-files)) |
| 274 | 265 | $(Q)rm -rf $(call objectify, $(clean-dirs)) |
| 275 | 266 | |
| @@ -161,6 +161,10 @@ X!Edrivers/base/interface.c · 160 unmodified lines | ||
| 161 | 161 | !Iinclude/linux/fence.h |
| 162 | 162 | !Edrivers/dma-buf/seqno-fence.c |
| 163 | 163 | !Iinclude/linux/seqno-fence.h |
| 164 | +!Edrivers/dma-buf/fence-array.c | |
| 165 | +!Iinclude/linux/fence-array.h | |
| 166 | +!Edrivers/dma-buf/reservation.c | |
| 167 | +!Iinclude/linux/reservation.h | |
| 164 | 168 | !Edrivers/dma-buf/sync_file.c |
| 165 | 169 | !Iinclude/linux/sync_file.h |
| 166 | 170 | </sect2> |
| @@ -1,3540 +0,0 @@ | ||
| 1 | −<?xml version="1.0" encoding="UTF-8"?> | |
| 2 | −<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" | |
| 3 | − "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd" []> | |
| 4 | − | |
| 5 | −<book id="gpuDevelopersGuide"> | |
| 6 | − <bookinfo> | |
| 7 | − <title>Linux GPU Driver Developer's Guide</title> | |
| 8 | − | |
| 9 | − <authorgroup> | |
| 10 | − <author> | |
| 11 | − <firstname>Jesse</firstname> | |
| 12 | − <surname>Barnes</surname> | |
| 13 | − <contrib>Initial version</contrib> | |
| 14 | − <affiliation> | |
| 15 | − <orgname>Intel Corporation</orgname> | |
| 16 | − <address> | |
| 17 | − <email>jesse.barnes@intel.com</email> | |
| 18 | − </address> | |
| 19 | − </affiliation> | |
| 20 | − </author> | |
| 21 | − <author> | |
| 22 | − <firstname>Laurent</firstname> | |
| 23 | − <surname>Pinchart</surname> | |
| 24 | − <contrib>Driver internals</contrib> | |
| 25 | − <affiliation> | |
| 26 | − <orgname>Ideas on board SPRL</orgname> | |
| 27 | − <address> | |
| 28 | − <email>laurent.pinchart@ideasonboard.com</email> | |
| 29 | − </address> | |
| 30 | − </affiliation> | |
| 31 | − </author> | |
| 32 | − <author> | |
| 33 | − <firstname>Daniel</firstname> | |
| 34 | − <surname>Vetter</surname> | |
| 35 | − <contrib>Contributions all over the place</contrib> | |
| 36 | − <affiliation> | |
| 37 | − <orgname>Intel Corporation</orgname> | |
| 38 | − <address> | |
| 39 | − <email>daniel.vetter@ffwll.ch</email> | |
| 40 | − </address> | |
| 41 | − </affiliation> | |
| 42 | − </author> | |
| 43 | − <author> | |
| 44 | − <firstname>Lukas</firstname> | |
| 45 | − <surname>Wunner</surname> | |
| 46 | − <contrib>vga_switcheroo documentation</contrib> | |
| 47 | − <affiliation> | |
| 48 | − <address> | |
| 49 | − <email>lukas@wunner.de</email> | |
| 50 | − </address> | |
| 51 | − </affiliation> | |
| 52 | − </author> | |
| 53 | − </authorgroup> | |
| 54 | − | |
| 55 | − <copyright> | |
| 56 | − <year>2008-2009</year> | |
| 57 | − <year>2013-2014</year> | |
| 58 | − <holder>Intel Corporation</holder> | |
| 59 | − </copyright> | |
| 60 | − <copyright> | |
| 61 | − <year>2012</year> | |
| 62 | − <holder>Laurent Pinchart</holder> | |
| 63 | − </copyright> | |
| 64 | − <copyright> | |
| 65 | − <year>2015</year> | |
| 66 | − <holder>Lukas Wunner</holder> | |
| 67 | − </copyright> | |
| 68 | − | |
| 69 | − <legalnotice> | |
| 70 | − <para> | |
| 71 | − The contents of this file may be used under the terms of the GNU | |
| 72 | − General Public License version 2 (the "GPL") as distributed in | |
| 73 | − the kernel source COPYING file. | |
| 74 | − </para> | |
| 75 | − </legalnotice> | |
| 76 | − | |
| 77 | − <revhistory> | |
| 78 | − <!-- Put document revisions here, newest first. --> | |
| 79 | − <revision> | |
| 80 | − <revnumber>1.0</revnumber> | |
| 81 | − <date>2012-07-13</date> | |
| 82 | − <authorinitials>LP</authorinitials> | |
| 83 | − <revremark>Added extensive documentation about driver internals. | |
| 84 | − </revremark> | |
| 85 | − </revision> | |
| 86 | − <revision> | |
| 87 | − <revnumber>1.1</revnumber> | |
| 88 | − <date>2015-10-11</date> | |
| 89 | − <authorinitials>LW</authorinitials> | |
| 90 | − <revremark>Added vga_switcheroo documentation. | |
| 91 | − </revremark> | |
| 92 | − </revision> | |
| 93 | − </revhistory> | |
| 94 | − </bookinfo> | |
| 95 | − | |
| 96 | −<toc></toc> | |
| 97 | − | |
| 98 | −<part id="drmCore"> | |
| 99 | − <title>DRM Core</title> | |
| 100 | − <partintro> | |
| 101 | − <para> | |
| 102 | − This first part of the GPU Driver Developer's Guide documents core DRM | |
| 103 | − code, helper libraries for writing drivers and generic userspace | |
| 104 | − interfaces exposed by DRM drivers. | |
| 105 | − </para> | |
| 106 | − </partintro> | |
| 107 | − | |
| 108 | − <chapter id="drmIntroduction"> | |
| 109 | − <title>Introduction</title> | |
| 110 | − <para> | |
| 111 | − The Linux DRM layer contains code intended to support the needs | |
| 112 | − of complex graphics devices, usually containing programmable | |
| 113 | − pipelines well suited to 3D graphics acceleration. Graphics | |
| 114 | − drivers in the kernel may make use of DRM functions to make | |
| 115 | − tasks like memory management, interrupt handling and DMA easier, | |
| 116 | − and provide a uniform interface to applications. | |
| 117 | − </para> | |
| 118 | − <para> | |
| 119 | − A note on versions: this guide covers features found in the DRM | |
| 120 | − tree, including the TTM memory manager, output configuration and | |
| 121 | − mode setting, and the new vblank internals, in addition to all | |
| 122 | − the regular features found in current kernels. | |
| 123 | − </para> | |
| 124 | − <para> | |
| 125 | − [Insert diagram of typical DRM stack here] | |
| 126 | − </para> | |
| 127 | − <sect1> | |
| 128 | − <title>Style Guidelines</title> | |
| 129 | − <para> | |
| 130 | − For consistency this documentation uses American English. Abbreviations | |
| 131 | − are written as all-uppercase, for example: DRM, KMS, IOCTL, CRTC, and so | |
| 132 | − on. To aid in reading, documentations make full use of the markup | |
| 133 | − characters kerneldoc provides: @parameter for function parameters, @member | |
| 134 | − for structure members, &structure to reference structures and | |
| 135 | − function() for functions. These all get automatically hyperlinked if | |
| 136 | − kerneldoc for the referenced objects exists. When referencing entries in | |
| 137 | − function vtables please use ->vfunc(). Note that kerneldoc does | |
| 138 | − not support referencing struct members directly, so please add a reference | |
| 139 | − to the vtable struct somewhere in the same paragraph or at least section. | |
| 140 | − </para> | |
| 141 | − <para> | |
| 142 | − Except in special situations (to separate locked from unlocked variants) | |
| 143 | − locking requirements for functions aren't documented in the kerneldoc. | |
| 144 | − Instead locking should be check at runtime using e.g. | |
| 145 | − <code>WARN_ON(!mutex_is_locked(...));</code>. Since it's much easier to | |
| 146 | − ignore documentation than runtime noise this provides more value. And on | |
| 147 | − top of that runtime checks do need to be updated when the locking rules | |
| 148 | − change, increasing the chances that they're correct. Within the | |
| 149 | − documentation the locking rules should be explained in the relevant | |
| 150 | − structures: Either in the comment for the lock explaining what it | |
| 151 | − protects, or data fields need a note about which lock protects them, or | |
| 152 | − both. | |
| 153 | − </para> | |
| 154 | − <para> | |
| 155 | − Functions which have a non-<code>void</code> return value should have a | |
| 156 | − section called "Returns" explaining the expected return values in | |
| 157 | − different cases and their meanings. Currently there's no consensus whether | |
| 158 | − that section name should be all upper-case or not, and whether it should | |
| 159 | − end in a colon or not. Go with the file-local style. Other common section | |
| 160 | − names are "Notes" with information for dangerous or tricky corner cases, | |
| 161 | − and "FIXME" where the interface could be cleaned up. | |
| 162 | − </para> | |
| 163 | − </sect1> | |
| 164 | − </chapter> | |
| 165 | − | |
| 166 | − <!-- Internals --> | |
| 167 | − | |
| 168 | − <chapter id="drmInternals"> | |
| 169 | − <title>DRM Internals</title> | |
| 170 | − <para> | |
| 171 | − This chapter documents DRM internals relevant to driver authors | |
| 172 | − and developers working to add support for the latest features to | |
| 173 | − existing drivers. | |
| 174 | − </para> | |
| 175 | − <para> | |
| 176 | − First, we go over some typical driver initialization | |
| 177 | − requirements, like setting up command buffers, creating an | |
| 178 | − initial output configuration, and initializing core services. | |
| 179 | − Subsequent sections cover core internals in more detail, | |
| 180 | − providing implementation notes and examples. | |
| 181 | − </para> | |
| 182 | − <para> | |
| 183 | − The DRM layer provides several services to graphics drivers, | |
| 184 | − many of them driven by the application interfaces it provides | |
| 185 | − through libdrm, the library that wraps most of the DRM ioctls. | |
| 186 | − These include vblank event handling, memory | |
| 187 | − management, output management, framebuffer management, command | |
| 188 | − submission & fencing, suspend/resume support, and DMA | |
| 189 | − services. | |
| 190 | − </para> | |
| 191 | − | |
| 192 | − <!-- Internals: driver init --> | |
| 193 | − | |
| 194 | − <sect1> | |
| 195 | − <title>Driver Initialization</title> | |
| 196 | − <para> | |
| 197 | − At the core of every DRM driver is a <structname>drm_driver</structname> | |
| 198 | − structure. Drivers typically statically initialize a drm_driver structure, | |
| 199 | − and then pass it to <function>drm_dev_alloc()</function> to allocate a | |
| 200 | − device instance. After the device instance is fully initialized it can be | |
| 201 | − registered (which makes it accessible from userspace) using | |
| 202 | − <function>drm_dev_register()</function>. | |
| 203 | − </para> | |
| 204 | − <para> | |
| 205 | − The <structname>drm_driver</structname> structure contains static | |
| 206 | − information that describes the driver and features it supports, and | |
| 207 | − pointers to methods that the DRM core will call to implement the DRM API. | |
| 208 | − We will first go through the <structname>drm_driver</structname> static | |
| 209 | − information fields, and will then describe individual operations in | |
| 210 | − details as they get used in later sections. | |
| 211 | − </para> | |
| 212 | − <sect2> | |
| 213 | − <title>Driver Information</title> | |
| 214 | − <sect3> | |
| 215 | − <title>Driver Features</title> | |
| 216 | − <para> | |
| 217 | − Drivers inform the DRM core about their requirements and supported | |
| 218 | − features by setting appropriate flags in the | |
| 219 | − <structfield>driver_features</structfield> field. Since those flags | |
| 220 | − influence the DRM core behaviour since registration time, most of them | |
| 221 | − must be set to registering the <structname>drm_driver</structname> | |
| 222 | − instance. | |
| 223 | − </para> | |
| 224 | − <synopsis>u32 driver_features;</synopsis> | |
| 225 | − <variablelist> | |
| 226 | − <title>Driver Feature Flags</title> | |
| 227 | − <varlistentry> | |
| 228 | − <term>DRIVER_USE_AGP</term> | |
| 229 | − <listitem><para> | |
| 230 | − Driver uses AGP interface, the DRM core will manage AGP resources. | |
| 231 | − </para></listitem> | |
| 232 | − </varlistentry> | |
| 233 | − <varlistentry> | |
| 234 | − <term>DRIVER_REQUIRE_AGP</term> | |
| 235 | − <listitem><para> | |
| 236 | − Driver needs AGP interface to function. AGP initialization failure | |
| 237 | − will become a fatal error. | |
| 238 | − </para></listitem> | |
| 239 | − </varlistentry> | |
| 240 | − <varlistentry> | |
| 241 | − <term>DRIVER_PCI_DMA</term> | |
| 242 | − <listitem><para> | |
| 243 | − Driver is capable of PCI DMA, mapping of PCI DMA buffers to | |
| 244 | − userspace will be enabled. Deprecated. | |
| 245 | − </para></listitem> | |
| 246 | − </varlistentry> | |
| 247 | − <varlistentry> | |
| 248 | − <term>DRIVER_SG</term> | |
| 249 | − <listitem><para> | |
| 250 | − Driver can perform scatter/gather DMA, allocation and mapping of | |
| 251 | − scatter/gather buffers will be enabled. Deprecated. | |
| 252 | − </para></listitem> | |
| 253 | − </varlistentry> | |
| 254 | − <varlistentry> | |
| 255 | − <term>DRIVER_HAVE_DMA</term> | |
| 256 | − <listitem><para> | |
| 257 | − Driver supports DMA, the userspace DMA API will be supported. | |
| 258 | − Deprecated. | |
| 259 | − </para></listitem> | |
| 260 | − </varlistentry> | |
| 261 | − <varlistentry> | |
| 262 | − <term>DRIVER_HAVE_IRQ</term><term>DRIVER_IRQ_SHARED</term> | |
| 263 | − <listitem><para> | |
| 264 | − DRIVER_HAVE_IRQ indicates whether the driver has an IRQ handler | |
| 265 | − managed by the DRM Core. The core will support simple IRQ handler | |
| 266 | − installation when the flag is set. The installation process is | |
| 267 | − described in <xref linkend="drm-irq-registration"/>.</para> | |
| 268 | − <para>DRIVER_IRQ_SHARED indicates whether the device & handler | |
| 269 | − support shared IRQs (note that this is required of PCI drivers). | |
| 270 | − </para></listitem> | |
| 271 | − </varlistentry> | |
| 272 | − <varlistentry> | |
| 273 | − <term>DRIVER_GEM</term> | |
| 274 | − <listitem><para> | |
| 275 | − Driver use the GEM memory manager. | |
| 276 | − </para></listitem> | |
| 277 | − </varlistentry> | |
| 278 | − <varlistentry> | |
| 279 | − <term>DRIVER_MODESET</term> | |
| 280 | − <listitem><para> | |
| 281 | − Driver supports mode setting interfaces (KMS). | |
| 282 | − </para></listitem> | |
| 283 | − </varlistentry> | |
| 284 | − <varlistentry> | |
| 285 | − <term>DRIVER_PRIME</term> | |
| 286 | − <listitem><para> | |
| 287 | − Driver implements DRM PRIME buffer sharing. | |
| 288 | − </para></listitem> | |
| 289 | − </varlistentry> | |
| 290 | − <varlistentry> | |
| 291 | − <term>DRIVER_RENDER</term> | |
| 292 | − <listitem><para> | |
| 293 | − Driver supports dedicated render nodes. | |
| 294 | − </para></listitem> | |
| 295 | − </varlistentry> | |
| 296 | − <varlistentry> | |
| 297 | − <term>DRIVER_ATOMIC</term> | |
| 298 | − <listitem><para> | |
| 299 | − Driver supports atomic properties. In this case the driver | |
| 300 | − must implement appropriate obj->atomic_get_property() vfuncs | |
| 301 | − for any modeset objects with driver specific properties. | |
| 302 | − </para></listitem> | |
| 303 | − </varlistentry> | |
| 304 | − </variablelist> | |
| 305 | − </sect3> | |
| 306 | − <sect3> | |
| 307 | − <title>Major, Minor and Patchlevel</title> | |
| 308 | − <synopsis>int major; | |
| 309 | −int minor; | |
| 310 | −int patchlevel;</synopsis> | |
| 311 | − <para> | |
| 312 | − The DRM core identifies driver versions by a major, minor and patch | |
| 313 | − level triplet. The information is printed to the kernel log at | |
| 314 | − initialization time and passed to userspace through the | |
| 315 | − DRM_IOCTL_VERSION ioctl. | |
| 316 | − </para> | |
| 317 | − <para> | |
| 318 | − The major and minor numbers are also used to verify the requested driver | |
| 319 | − API version passed to DRM_IOCTL_SET_VERSION. When the driver API changes | |
| 320 | − between minor versions, applications can call DRM_IOCTL_SET_VERSION to | |
| 321 | − select a specific version of the API. If the requested major isn't equal | |
| 322 | − to the driver major, or the requested minor is larger than the driver | |
| 323 | − minor, the DRM_IOCTL_SET_VERSION call will return an error. Otherwise | |
| 324 | − the driver's set_version() method will be called with the requested | |
| 325 | − version. | |
| 326 | − </para> | |
| 327 | − </sect3> | |
| 328 | − <sect3> | |
| 329 | − <title>Name, Description and Date</title> | |
| 330 | − <synopsis>char *name; | |
| 331 | −char *desc; | |
| 332 | −char *date;</synopsis> | |
| 333 | − <para> | |
| 334 | − The driver name is printed to the kernel log at initialization time, | |
| 335 | − used for IRQ registration and passed to userspace through | |
| 336 | − DRM_IOCTL_VERSION. | |
| 337 | − </para> | |
| 338 | − <para> | |
| 339 | − The driver description is a purely informative string passed to | |
| 340 | − userspace through the DRM_IOCTL_VERSION ioctl and otherwise unused by | |
| 341 | − the kernel. | |
| 342 | − </para> | |
| 343 | − <para> | |
| 344 | − The driver date, formatted as YYYYMMDD, is meant to identify the date of | |
| 345 | − the latest modification to the driver. However, as most drivers fail to | |
| 346 | − update it, its value is mostly useless. The DRM core prints it to the | |
| 347 | − kernel log at initialization time and passes it to userspace through the | |
| 348 | − DRM_IOCTL_VERSION ioctl. | |
| 349 | − </para> | |
| 350 | − </sect3> | |
| 351 | − </sect2> | |
| 352 | − <sect2> | |
| 353 | − <title>Device Instance and Driver Handling</title> | |
| 354 | −!Pdrivers/gpu/drm/drm_drv.c driver instance overview | |
| 355 | −!Edrivers/gpu/drm/drm_drv.c | |
| 356 | − </sect2> | |
| 357 | − <sect2> | |
| 358 | − <title>Driver Load</title> | |
| 359 | − <sect3 id="drm-irq-registration"> | |
| 360 | − <title>IRQ Registration</title> | |
| 361 | − <para> | |
| 362 | − The DRM core tries to facilitate IRQ handler registration and | |
| 363 | − unregistration by providing <function>drm_irq_install</function> and | |
| 364 | − <function>drm_irq_uninstall</function> functions. Those functions only | |
| 365 | − support a single interrupt per device, devices that use more than one | |
| 366 | − IRQs need to be handled manually. | |
| 367 | − </para> | |
| 368 | − <sect4> | |
| 369 | − <title>Managed IRQ Registration</title> | |
| 370 | − <para> | |
| 371 | − <function>drm_irq_install</function> starts by calling the | |
| 372 | − <methodname>irq_preinstall</methodname> driver operation. The operation | |
| 373 | − is optional and must make sure that the interrupt will not get fired by | |
| 374 | − clearing all pending interrupt flags or disabling the interrupt. | |
| 375 | − </para> | |
| 376 | − <para> | |
| 377 | − The passed-in IRQ will then be requested by a call to | |
| 378 | − <function>request_irq</function>. If the DRIVER_IRQ_SHARED driver | |
| 379 | − feature flag is set, a shared (IRQF_SHARED) IRQ handler will be | |
| 380 | − requested. | |
| 381 | − </para> | |
| 382 | − <para> | |
| 383 | − The IRQ handler function must be provided as the mandatory irq_handler | |
| 384 | − driver operation. It will get passed directly to | |
| 385 | − <function>request_irq</function> and thus has the same prototype as all | |
| 386 | − IRQ handlers. It will get called with a pointer to the DRM device as the | |
| 387 | − second argument. | |
| 388 | − </para> | |
| 389 | − <para> | |
| 390 | − Finally the function calls the optional | |
| 391 | − <methodname>irq_postinstall</methodname> driver operation. The operation | |
| 392 | − usually enables interrupts (excluding the vblank interrupt, which is | |
| 393 | − enabled separately), but drivers may choose to enable/disable interrupts | |
| 394 | − at a different time. | |
| 395 | − </para> | |
| 396 | − <para> | |
| 397 | − <function>drm_irq_uninstall</function> is similarly used to uninstall an | |
| 398 | − IRQ handler. It starts by waking up all processes waiting on a vblank | |
| 399 | − interrupt to make sure they don't hang, and then calls the optional | |
| 400 | − <methodname>irq_uninstall</methodname> driver operation. The operation | |
| 401 | − must disable all hardware interrupts. Finally the function frees the IRQ | |
| 402 | − by calling <function>free_irq</function>. | |
| 403 | − </para> | |
| 404 | − </sect4> | |
| 405 | − <sect4> | |
| 406 | − <title>Manual IRQ Registration</title> | |
| 407 | − <para> | |
| 408 | − Drivers that require multiple interrupt handlers can't use the managed | |
| 409 | − IRQ registration functions. In that case IRQs must be registered and | |
| 410 | − unregistered manually (usually with the <function>request_irq</function> | |
| 411 | − and <function>free_irq</function> functions, or their devm_* equivalent). | |
| 412 | − </para> | |
| 413 | − <para> | |
| 414 | − When manually registering IRQs, drivers must not set the DRIVER_HAVE_IRQ | |
| 415 | − driver feature flag, and must not provide the | |
| 416 | − <methodname>irq_handler</methodname> driver operation. They must set the | |
| 417 | − <structname>drm_device</structname> <structfield>irq_enabled</structfield> | |
| 418 | − field to 1 upon registration of the IRQs, and clear it to 0 after | |
| 419 | − unregistering the IRQs. | |
| 420 | − </para> | |
| 421 | − </sect4> | |
| 422 | − </sect3> | |
| 423 | − <sect3> | |
| 424 | − <title>Memory Manager Initialization</title> | |
| 425 | − <para> | |
| 426 | − Every DRM driver requires a memory manager which must be initialized at | |
| 427 | − load time. DRM currently contains two memory managers, the Translation | |
| 428 | − Table Manager (TTM) and the Graphics Execution Manager (GEM). | |
| 429 | − This document describes the use of the GEM memory manager only. See | |
| 430 | − <xref linkend="drm-memory-management"/> for details. | |
| 431 | − </para> | |
| 432 | − </sect3> | |
| 433 | − <sect3> | |
| 434 | − <title>Miscellaneous Device Configuration</title> | |
| 435 | − <para> | |
| 436 | − Another task that may be necessary for PCI devices during configuration | |
| 437 | − is mapping the video BIOS. On many devices, the VBIOS describes device | |
| 438 | − configuration, LCD panel timings (if any), and contains flags indicating | |
| 439 | − device state. Mapping the BIOS can be done using the pci_map_rom() call, | |
| 440 | − a convenience function that takes care of mapping the actual ROM, | |
| 441 | − whether it has been shadowed into memory (typically at address 0xc0000) | |
| 442 | − or exists on the PCI device in the ROM BAR. Note that after the ROM has | |
| 443 | − been mapped and any necessary information has been extracted, it should | |
| 444 | − be unmapped; on many devices, the ROM address decoder is shared with | |
| 445 | − other BARs, so leaving it mapped could cause undesired behaviour like | |
| 446 | − hangs or memory corruption. | |
| 447 | − <!--!Fdrivers/pci/rom.c pci_map_rom--> | |
| 448 | − </para> | |
| 449 | − </sect3> | |
| 450 | − </sect2> | |
| 451 | − <sect2> | |
| 452 | − <title>Bus-specific Device Registration and PCI Support</title> | |
| 453 | − <para> | |
| 454 | − A number of functions are provided to help with device registration. | |
| 455 | − The functions deal with PCI and platform devices respectively and are | |
| 456 | − only provided for historical reasons. These are all deprecated and | |
| 457 | − shouldn't be used in new drivers. Besides that there's a few | |
| 458 | − helpers for pci drivers. | |
| 459 | − </para> | |
| 460 | −!Edrivers/gpu/drm/drm_pci.c | |
| 461 | −!Edrivers/gpu/drm/drm_platform.c | |
| 462 | − </sect2> | |
| 463 | − </sect1> | |
| 464 | − | |
| 465 | − <!-- Internals: memory management --> | |
| 466 | − | |
| 467 | − <sect1 id="drm-memory-management"> | |
| 468 | − <title>Memory management</title> | |
| 469 | − <para> | |
| 470 | − Modern Linux systems require large amount of graphics memory to store | |
| 471 | − frame buffers, textures, vertices and other graphics-related data. Given | |
| 472 | − the very dynamic nature of many of that data, managing graphics memory | |
| 473 | − efficiently is thus crucial for the graphics stack and plays a central | |
| 474 | − role in the DRM infrastructure. | |
| 475 | − </para> | |
| 476 | − <para> | |
| 477 | − The DRM core includes two memory managers, namely Translation Table Maps | |
| 478 | − (TTM) and Graphics Execution Manager (GEM). TTM was the first DRM memory | |
| 479 | − manager to be developed and tried to be a one-size-fits-them all | |
| 480 | − solution. It provides a single userspace API to accommodate the need of | |
| 481 | − all hardware, supporting both Unified Memory Architecture (UMA) devices | |
| 482 | − and devices with dedicated video RAM (i.e. most discrete video cards). | |
| 483 | − This resulted in a large, complex piece of code that turned out to be | |
| 484 | − hard to use for driver development. | |
| 485 | − </para> | |
| 486 | − <para> | |
| 487 | − GEM started as an Intel-sponsored project in reaction to TTM's | |
| 488 | − complexity. Its design philosophy is completely different: instead of | |
| 489 | − providing a solution to every graphics memory-related problems, GEM | |
| 490 | − identified common code between drivers and created a support library to | |
| 491 | − share it. GEM has simpler initialization and execution requirements than | |
| 492 | − TTM, but has no video RAM management capabilities and is thus limited to | |
| 493 | − UMA devices. | |
| 494 | − </para> | |
| 495 | − <sect2> | |
| 496 | − <title>The Translation Table Manager (TTM)</title> | |
| 497 | − <para> | |
| 498 | − TTM design background and information belongs here. | |
| 499 | − </para> | |
| 500 | − <sect3> | |
| 501 | − <title>TTM initialization</title> | |
| 502 | − <warning><para>This section is outdated.</para></warning> | |
| 503 | − <para> | |
| 504 | − Drivers wishing to support TTM must fill out a drm_bo_driver | |
| 505 | − structure. The structure contains several fields with function | |
| 506 | − pointers for initializing the TTM, allocating and freeing memory, | |
| 507 | − waiting for command completion and fence synchronization, and memory | |
| 508 | − migration. See the radeon_ttm.c file for an example of usage. | |
| 509 | − </para> | |
| 510 | − <para> | |
| 511 | − The ttm_global_reference structure is made up of several fields: | |
| 512 | − </para> | |
| 513 | − <programlisting> | |
| 514 | − struct ttm_global_reference { | |
| 515 | − enum ttm_global_types global_type; | |
| 516 | − size_t size; | |
| 517 | − void *object; | |
| 518 | − int (*init) (struct ttm_global_reference *); | |
| 519 | − void (*release) (struct ttm_global_reference *); | |
| 520 | − }; | |
| 521 | − </programlisting> | |
| 522 | − <para> | |
| 523 | − There should be one global reference structure for your memory | |
| 524 | − manager as a whole, and there will be others for each object | |
| 525 | − created by the memory manager at runtime. Your global TTM should | |
| 526 | − have a type of TTM_GLOBAL_TTM_MEM. The size field for the global | |
| 527 | − object should be sizeof(struct ttm_mem_global), and the init and | |
| 528 | − release hooks should point at your driver-specific init and | |
| 529 | − release routines, which probably eventually call | |
| 530 | − ttm_mem_global_init and ttm_mem_global_release, respectively. | |
| 531 | − </para> | |
| 532 | − <para> | |
| 533 | − Once your global TTM accounting structure is set up and initialized | |
| 534 | − by calling ttm_global_item_ref() on it, | |
| 535 | − you need to create a buffer object TTM to | |
| 536 | − provide a pool for buffer object allocation by clients and the | |
| 537 | − kernel itself. The type of this object should be TTM_GLOBAL_TTM_BO, | |
| 538 | − and its size should be sizeof(struct ttm_bo_global). Again, | |
| 539 | − driver-specific init and release functions may be provided, | |
| 540 | − likely eventually calling ttm_bo_global_init() and | |
| 541 | − ttm_bo_global_release(), respectively. Also, like the previous | |
| 542 | − object, ttm_global_item_ref() is used to create an initial reference | |
| 543 | − count for the TTM, which will call your initialization function. | |
| 544 | − </para> | |
| 545 | − </sect3> | |
| 546 | − </sect2> | |
| 547 | − <sect2 id="drm-gem"> | |
| 548 | − <title>The Graphics Execution Manager (GEM)</title> | |
| 549 | − <para> | |
| 550 | − The GEM design approach has resulted in a memory manager that doesn't | |
| 551 | − provide full coverage of all (or even all common) use cases in its | |
| 552 | − userspace or kernel API. GEM exposes a set of standard memory-related | |
| 553 | − operations to userspace and a set of helper functions to drivers, and let | |
| 554 | − drivers implement hardware-specific operations with their own private API. | |
| 555 | − </para> | |
| 556 | − <para> | |
| 557 | − The GEM userspace API is described in the | |
| 558 | − <ulink url="http://lwn.net/Articles/283798/"><citetitle>GEM - the Graphics | |
| 559 | − Execution Manager</citetitle></ulink> article on LWN. While slightly | |
| 560 | − outdated, the document provides a good overview of the GEM API principles. | |
| 561 | − Buffer allocation and read and write operations, described as part of the | |
| 562 | − common GEM API, are currently implemented using driver-specific ioctls. | |
| 563 | − </para> | |
| 564 | − <para> | |
| 565 | − GEM is data-agnostic. It manages abstract buffer objects without knowing | |
| 566 | − what individual buffers contain. APIs that require knowledge of buffer | |
| 567 | − contents or purpose, such as buffer allocation or synchronization | |
| 568 | − primitives, are thus outside of the scope of GEM and must be implemented | |
| 569 | − using driver-specific ioctls. | |
| 570 | − </para> | |
| 571 | − <para> | |
| 572 | − On a fundamental level, GEM involves several operations: | |
| 573 | − <itemizedlist> | |
| 574 | − <listitem>Memory allocation and freeing</listitem> | |
| 575 | − <listitem>Command execution</listitem> | |
| 576 | − <listitem>Aperture management at command execution time</listitem> | |
| 577 | − </itemizedlist> | |
| 578 | − Buffer object allocation is relatively straightforward and largely | |
| 579 | − provided by Linux's shmem layer, which provides memory to back each | |
| 580 | − object. | |
| 581 | − </para> | |
| 582 | − <para> | |
| 583 | − Device-specific operations, such as command execution, pinning, buffer | |
| 584 | − read & write, mapping, and domain ownership transfers are left to | |
| 585 | − driver-specific ioctls. | |
| 586 | − </para> | |
| 587 | − <sect3> | |
| 588 | − <title>GEM Initialization</title> | |
| 589 | − <para> | |
| 590 | − Drivers that use GEM must set the DRIVER_GEM bit in the struct | |
| 591 | − <structname>drm_driver</structname> | |
| 592 | − <structfield>driver_features</structfield> field. The DRM core will | |
| 593 | − then automatically initialize the GEM core before calling the | |
| 594 | − <methodname>load</methodname> operation. Behind the scene, this will | |
| 595 | − create a DRM Memory Manager object which provides an address space | |
| 596 | − pool for object allocation. | |
| 597 | − </para> | |
| 598 | − <para> | |
| 599 | − In a KMS configuration, drivers need to allocate and initialize a | |
| 600 | − command ring buffer following core GEM initialization if required by | |
| 601 | − the hardware. UMA devices usually have what is called a "stolen" | |
| 602 | − memory region, which provides space for the initial framebuffer and | |
| 603 | − large, contiguous memory regions required by the device. This space is | |
| 604 | − typically not managed by GEM, and must be initialized separately into | |
| 605 | − its own DRM MM object. | |
| 606 | − </para> | |
| 607 | − </sect3> | |
| 608 | − <sect3> | |
| 609 | − <title>GEM Objects Creation</title> | |
| 610 | − <para> | |
| 611 | − GEM splits creation of GEM objects and allocation of the memory that | |
| 612 | − backs them in two distinct operations. | |
| 613 | − </para> | |
| 614 | − <para> | |
| 615 | − GEM objects are represented by an instance of struct | |
| 616 | − <structname>drm_gem_object</structname>. Drivers usually need to extend | |
| 617 | − GEM objects with private information and thus create a driver-specific | |
| 618 | − GEM object structure type that embeds an instance of struct | |
| 619 | − <structname>drm_gem_object</structname>. | |
| 620 | − </para> | |
| 621 | − <para> | |
| 622 | − To create a GEM object, a driver allocates memory for an instance of its | |
| 623 | − specific GEM object type and initializes the embedded struct | |
| 624 | − <structname>drm_gem_object</structname> with a call to | |
| 625 | − <function>drm_gem_object_init</function>. The function takes a pointer to | |
| 626 | − the DRM device, a pointer to the GEM object and the buffer object size | |
| 627 | − in bytes. | |
| 628 | − </para> | |
| 629 | − <para> | |
| 630 | − GEM uses shmem to allocate anonymous pageable memory. | |
| 631 | − <function>drm_gem_object_init</function> will create an shmfs file of | |
| 632 | − the requested size and store it into the struct | |
| 633 | − <structname>drm_gem_object</structname> <structfield>filp</structfield> | |
| 634 | − field. The memory is used as either main storage for the object when the | |
| 635 | − graphics hardware uses system memory directly or as a backing store | |
| 636 | − otherwise. | |
| 637 | − </para> | |
| 638 | − <para> | |
| 639 | − Drivers are responsible for the actual physical pages allocation by | |
| 640 | − calling <function>shmem_read_mapping_page_gfp</function> for each page. | |
| 641 | − Note that they can decide to allocate pages when initializing the GEM | |
| 642 | − object, or to delay allocation until the memory is needed (for instance | |
| 643 | − when a page fault occurs as a result of a userspace memory access or | |
| 644 | − when the driver needs to start a DMA transfer involving the memory). | |
| 645 | − </para> | |
| 646 | − <para> | |
| 647 | − Anonymous pageable memory allocation is not always desired, for instance | |
| 648 | − when the hardware requires physically contiguous system memory as is | |
| 649 | − often the case in embedded devices. Drivers can create GEM objects with | |
| 650 | − no shmfs backing (called private GEM objects) by initializing them with | |
| 651 | − a call to <function>drm_gem_private_object_init</function> instead of | |
| 652 | − <function>drm_gem_object_init</function>. Storage for private GEM | |
| 653 | − objects must be managed by drivers. | |
| 654 | − </para> | |
| 655 | − </sect3> | |
| 656 | − <sect3> | |
| 657 | − <title>GEM Objects Lifetime</title> | |
| 658 | − <para> | |
| 659 | − All GEM objects are reference-counted by the GEM core. References can be | |
| 660 | − acquired and release by <function>calling drm_gem_object_reference</function> | |
| 661 | − and <function>drm_gem_object_unreference</function> respectively. The | |
| 662 | − caller must hold the <structname>drm_device</structname> | |
| 663 | − <structfield>struct_mutex</structfield> lock when calling | |
| 664 | − <function>drm_gem_object_reference</function>. As a convenience, GEM | |
| 665 | − provides <function>drm_gem_object_unreference_unlocked</function> | |
| 666 | − functions that can be called without holding the lock. | |
| 667 | − </para> | |
| 668 | − <para> | |
| 669 | − When the last reference to a GEM object is released the GEM core calls | |
| 670 | − the <structname>drm_driver</structname> | |
| 671 | − <methodname>gem_free_object</methodname> operation. That operation is | |
| 672 | − mandatory for GEM-enabled drivers and must free the GEM object and all | |
| 673 | − associated resources. | |
| 674 | − </para> | |
| 675 | − <para> | |
| 676 | − <synopsis>void (*gem_free_object) (struct drm_gem_object *obj);</synopsis> | |
| 677 | − Drivers are responsible for freeing all GEM object resources. This includes | |
| 678 | − the resources created by the GEM core, which need to be released with | |
| 679 | − <function>drm_gem_object_release</function>. | |
| 680 | − </para> | |
| 681 | − </sect3> | |
| 682 | − <sect3> | |
| 683 | − <title>GEM Objects Naming</title> | |
| 684 | − <para> | |
| 685 | − Communication between userspace and the kernel refers to GEM objects | |
| 686 | − using local handles, global names or, more recently, file descriptors. | |
| 687 | − All of those are 32-bit integer values; the usual Linux kernel limits | |
| 688 | − apply to the file descriptors. | |
| 689 | − </para> | |
| 690 | − <para> | |
| 691 | − GEM handles are local to a DRM file. Applications get a handle to a GEM | |
| 692 | − object through a driver-specific ioctl, and can use that handle to refer | |
| 693 | − to the GEM object in other standard or driver-specific ioctls. Closing a | |
| 694 | − DRM file handle frees all its GEM handles and dereferences the | |
| 695 | − associated GEM objects. | |
| 696 | − </para> | |
| 697 | − <para> | |
| 698 | − To create a handle for a GEM object drivers call | |
| 699 | − <function>drm_gem_handle_create</function>. The function takes a pointer | |
| 700 | − to the DRM file and the GEM object and returns a locally unique handle. | |
| 701 | − When the handle is no longer needed drivers delete it with a call to | |
| 702 | − <function>drm_gem_handle_delete</function>. Finally the GEM object | |
| 703 | − associated with a handle can be retrieved by a call to | |
| 704 | − <function>drm_gem_object_lookup</function>. | |
| 705 | − </para> | |
| 706 | − <para> | |
| 707 | − Handles don't take ownership of GEM objects, they only take a reference | |
| 708 | − to the object that will be dropped when the handle is destroyed. To | |
| 709 | − avoid leaking GEM objects, drivers must make sure they drop the | |
| 710 | − reference(s) they own (such as the initial reference taken at object | |
| 711 | − creation time) as appropriate, without any special consideration for the | |
| 712 | − handle. For example, in the particular case of combined GEM object and | |
| 713 | − handle creation in the implementation of the | |
| 714 | − <methodname>dumb_create</methodname> operation, drivers must drop the | |
| 715 | − initial reference to the GEM object before returning the handle. | |
| 716 | − </para> | |
| 717 | − <para> | |
| 718 | − GEM names are similar in purpose to handles but are not local to DRM | |
| 719 | − files. They can be passed between processes to reference a GEM object | |
| 720 | − globally. Names can't be used directly to refer to objects in the DRM | |
| 721 | − API, applications must convert handles to names and names to handles | |
| 722 | − using the DRM_IOCTL_GEM_FLINK and DRM_IOCTL_GEM_OPEN ioctls | |
| 723 | − respectively. The conversion is handled by the DRM core without any | |
| 724 | − driver-specific support. | |
| 725 | − </para> | |
| 726 | − <para> | |
| 727 | − GEM also supports buffer sharing with dma-buf file descriptors through | |
| 728 | − PRIME. GEM-based drivers must use the provided helpers functions to | |
| 729 | − implement the exporting and importing correctly. See <xref linkend="drm-prime-support" />. | |
| 730 | − Since sharing file descriptors is inherently more secure than the | |
| 731 | − easily guessable and global GEM names it is the preferred buffer | |
| 732 | − sharing mechanism. Sharing buffers through GEM names is only supported | |
| 733 | − for legacy userspace. Furthermore PRIME also allows cross-device | |
| 734 | − buffer sharing since it is based on dma-bufs. | |
| 735 | − </para> | |
| 736 | − </sect3> | |
| 737 | − <sect3 id="drm-gem-objects-mapping"> | |
| 738 | − <title>GEM Objects Mapping</title> | |
| 739 | − <para> | |
| 740 | − Because mapping operations are fairly heavyweight GEM favours | |
| 741 | − read/write-like access to buffers, implemented through driver-specific | |
| 742 | − ioctls, over mapping buffers to userspace. However, when random access | |
| 743 | − to the buffer is needed (to perform software rendering for instance), | |
| 744 | − direct access to the object can be more efficient. | |
| 745 | − </para> | |
| 746 | − <para> | |
| 747 | − The mmap system call can't be used directly to map GEM objects, as they | |
| 748 | − don't have their own file handle. Two alternative methods currently | |
| 749 | − co-exist to map GEM objects to userspace. The first method uses a | |
| 750 | − driver-specific ioctl to perform the mapping operation, calling | |
| 751 | − <function>do_mmap</function> under the hood. This is often considered | |
| 752 | − dubious, seems to be discouraged for new GEM-enabled drivers, and will | |
| 753 | − thus not be described here. | |
| 754 | − </para> | |
| 755 | − <para> | |
| 756 | − The second method uses the mmap system call on the DRM file handle. | |
| 757 | − <synopsis>void *mmap(void *addr, size_t length, int prot, int flags, int fd, | |
| 758 | − off_t offset);</synopsis> | |
| 759 | − DRM identifies the GEM object to be mapped by a fake offset passed | |
| 760 | − through the mmap offset argument. Prior to being mapped, a GEM object | |
| 761 | − must thus be associated with a fake offset. To do so, drivers must call | |
| 762 | − <function>drm_gem_create_mmap_offset</function> on the object. | |
| 763 | − </para> | |
| 764 | − <para> | |
| 765 | − Once allocated, the fake offset value | |
| 766 | − must be passed to the application in a driver-specific way and can then | |
| 767 | − be used as the mmap offset argument. | |
| 768 | − </para> | |
| 769 | − <para> | |
| 770 | − The GEM core provides a helper method <function>drm_gem_mmap</function> | |
| 771 | − to handle object mapping. The method can be set directly as the mmap | |
| 772 | − file operation handler. It will look up the GEM object based on the | |
| 773 | − offset value and set the VMA operations to the | |
| 774 | − <structname>drm_driver</structname> <structfield>gem_vm_ops</structfield> | |
| 775 | − field. Note that <function>drm_gem_mmap</function> doesn't map memory to | |
| 776 | − userspace, but relies on the driver-provided fault handler to map pages | |
| 777 | − individually. | |
| 778 | − </para> | |
| 779 | − <para> | |
| 780 | − To use <function>drm_gem_mmap</function>, drivers must fill the struct | |
| 781 | − <structname>drm_driver</structname> <structfield>gem_vm_ops</structfield> | |
| 782 | − field with a pointer to VM operations. | |
| 783 | − </para> | |
| 784 | − <para> | |
| 785 | − <synopsis>struct vm_operations_struct *gem_vm_ops | |
| 786 | − | |
| 787 | − struct vm_operations_struct { | |
| 788 | − void (*open)(struct vm_area_struct * area); | |
| 789 | − void (*close)(struct vm_area_struct * area); | |
| 790 | − int (*fault)(struct vm_area_struct *vma, struct vm_fault *vmf); | |
| 791 | − };</synopsis> | |
| 792 | − </para> | |
| 793 | − <para> | |
| 794 | − The <methodname>open</methodname> and <methodname>close</methodname> | |
| 795 | − operations must update the GEM object reference count. Drivers can use | |
| 796 | − the <function>drm_gem_vm_open</function> and | |
| 797 | − <function>drm_gem_vm_close</function> helper functions directly as open | |
| 798 | − and close handlers. | |
| 799 | − </para> | |
| 800 | − <para> | |
| 801 | − The fault operation handler is responsible for mapping individual pages | |
| 802 | − to userspace when a page fault occurs. Depending on the memory | |
| 803 | − allocation scheme, drivers can allocate pages at fault time, or can | |
| 804 | − decide to allocate memory for the GEM object at the time the object is | |
| 805 | − created. | |
| 806 | − </para> | |
| 807 | − <para> | |
| 808 | − Drivers that want to map the GEM object upfront instead of handling page | |
| 809 | − faults can implement their own mmap file operation handler. | |
| 810 | − </para> | |
| 811 | − </sect3> | |
| 812 | − <sect3> | |
| 813 | − <title>Memory Coherency</title> | |
| 814 | − <para> | |
| 815 | − When mapped to the device or used in a command buffer, backing pages | |
| 816 | − for an object are flushed to memory and marked write combined so as to | |
| 817 | − be coherent with the GPU. Likewise, if the CPU accesses an object | |
| 818 | − after the GPU has finished rendering to the object, then the object | |
| 819 | − must be made coherent with the CPU's view of memory, usually involving | |
| 820 | − GPU cache flushing of various kinds. This core CPU<->GPU | |
| 821 | − coherency management is provided by a device-specific ioctl, which | |
| 822 | − evaluates an object's current domain and performs any necessary | |
| 823 | − flushing or synchronization to put the object into the desired | |
| 824 | − coherency domain (note that the object may be busy, i.e. an active | |
| 825 | − render target; in that case, setting the domain blocks the client and | |
| 826 | − waits for rendering to complete before performing any necessary | |
| 827 | − flushing operations). | |
| 828 | − </para> | |
| 829 | − </sect3> | |
| 830 | − <sect3> | |
| 831 | − <title>Command Execution</title> | |
| 832 | − <para> | |
| 833 | − Perhaps the most important GEM function for GPU devices is providing a | |
| 834 | − command execution interface to clients. Client programs construct | |
| 835 | − command buffers containing references to previously allocated memory | |
| 836 | − objects, and then submit them to GEM. At that point, GEM takes care to | |
| 837 | − bind all the objects into the GTT, execute the buffer, and provide | |
| 838 | − necessary synchronization between clients accessing the same buffers. | |
| 839 | − This often involves evicting some objects from the GTT and re-binding | |
| 840 | − others (a fairly expensive operation), and providing relocation | |
| 841 | − support which hides fixed GTT offsets from clients. Clients must take | |
| 842 | − care not to submit command buffers that reference more objects than | |
| 843 | − can fit in the GTT; otherwise, GEM will reject them and no rendering | |
| 844 | − will occur. Similarly, if several objects in the buffer require fence | |
| 845 | − registers to be allocated for correct rendering (e.g. 2D blits on | |
| 846 | − pre-965 chips), care must be taken not to require more fence registers | |
| 847 | − than are available to the client. Such resource management should be | |
| 848 | − abstracted from the client in libdrm. | |
| 849 | − </para> | |
| 850 | − </sect3> | |
| 851 | − </sect2> | |
| 852 | − <sect2> | |
| 853 | − <title>GEM Function Reference</title> | |
| 854 | −!Edrivers/gpu/drm/drm_gem.c | |
| 855 | −!Iinclude/drm/drm_gem.h | |
| 856 | − </sect2> | |
| 857 | − <sect2> | |
| 858 | − <title>VMA Offset Manager</title> | |
| 859 | −!Pdrivers/gpu/drm/drm_vma_manager.c vma offset manager | |
| 860 | −!Edrivers/gpu/drm/drm_vma_manager.c | |
| 861 | −!Iinclude/drm/drm_vma_manager.h | |
| 862 | − </sect2> | |
| 863 | − <sect2 id="drm-prime-support"> | |
| 864 | − <title>PRIME Buffer Sharing</title> | |
| 865 | − <para> | |
| 866 | − PRIME is the cross device buffer sharing framework in drm, originally | |
| 867 | − created for the OPTIMUS range of multi-gpu platforms. To userspace | |
| 868 | − PRIME buffers are dma-buf based file descriptors. | |
| 869 | − </para> | |
| 870 | − <sect3> | |
| 871 | − <title>Overview and Driver Interface</title> | |
| 872 | − <para> | |
| 873 | − Similar to GEM global names, PRIME file descriptors are | |
| 874 | − also used to share buffer objects across processes. They offer | |
| 875 | − additional security: as file descriptors must be explicitly sent over | |
| 876 | − UNIX domain sockets to be shared between applications, they can't be | |
| 877 | − guessed like the globally unique GEM names. | |
| 878 | − </para> | |
| 879 | − <para> | |
| 880 | − Drivers that support the PRIME | |
| 881 | − API must set the DRIVER_PRIME bit in the struct | |
| 882 | − <structname>drm_driver</structname> | |
| 883 | − <structfield>driver_features</structfield> field, and implement the | |
| 884 | − <methodname>prime_handle_to_fd</methodname> and | |
| 885 | − <methodname>prime_fd_to_handle</methodname> operations. | |
| 886 | − </para> | |
| 887 | − <para> | |
| 888 | − <synopsis>int (*prime_handle_to_fd)(struct drm_device *dev, | |
| 889 | − struct drm_file *file_priv, uint32_t handle, | |
| 890 | − uint32_t flags, int *prime_fd); | |
| 891 | −int (*prime_fd_to_handle)(struct drm_device *dev, | |
| 892 | − struct drm_file *file_priv, int prime_fd, | |
| 893 | − uint32_t *handle);</synopsis> | |
| 894 | − Those two operations convert a handle to a PRIME file descriptor and | |
| 895 | − vice versa. Drivers must use the kernel dma-buf buffer sharing framework | |
| 896 | − to manage the PRIME file descriptors. Similar to the mode setting | |
| 897 | − API PRIME is agnostic to the underlying buffer object manager, as | |
| 898 | − long as handles are 32bit unsigned integers. | |
| 899 | − </para> | |
| 900 | − <para> | |
| 901 | − While non-GEM drivers must implement the operations themselves, GEM | |
| 902 | − drivers must use the <function>drm_gem_prime_handle_to_fd</function> | |
| 903 | − and <function>drm_gem_prime_fd_to_handle</function> helper functions. | |
| 904 | − Those helpers rely on the driver | |
| 905 | − <methodname>gem_prime_export</methodname> and | |
| 906 | − <methodname>gem_prime_import</methodname> operations to create a dma-buf | |
| 907 | − instance from a GEM object (dma-buf exporter role) and to create a GEM | |
| 908 | − object from a dma-buf instance (dma-buf importer role). | |
| 909 | − </para> | |
| 910 | − <para> | |
| 911 | − <synopsis>struct dma_buf * (*gem_prime_export)(struct drm_device *dev, | |
| 912 | − struct drm_gem_object *obj, | |
| 913 | − int flags); | |
| 914 | −struct drm_gem_object * (*gem_prime_import)(struct drm_device *dev, | |
| 915 | − struct dma_buf *dma_buf);</synopsis> | |
| 916 | − These two operations are mandatory for GEM drivers that support | |
| 917 | − PRIME. | |
| 918 | − </para> | |
| 919 | − </sect3> | |
| 920 | − <sect3> | |
| 921 | − <title>PRIME Helper Functions</title> | |
| 922 | −!Pdrivers/gpu/drm/drm_prime.c PRIME Helpers | |
| 923 | − </sect3> | |
| 924 | − </sect2> | |
| 925 | − <sect2> | |
| 926 | − <title>PRIME Function References</title> | |
| 927 | −!Edrivers/gpu/drm/drm_prime.c | |
| 928 | − </sect2> | |
| 929 | − <sect2> | |
| 930 | − <title>DRM MM Range Allocator</title> | |
| 931 | − <sect3> | |
| 932 | − <title>Overview</title> | |
| 933 | −!Pdrivers/gpu/drm/drm_mm.c Overview | |
| 934 | − </sect3> | |
| 935 | − <sect3> | |
| 936 | − <title>LRU Scan/Eviction Support</title> | |
| 937 | −!Pdrivers/gpu/drm/drm_mm.c lru scan roaster | |
| 938 | − </sect3> | |
| 939 | − </sect2> | |
| 940 | − <sect2> | |
| 941 | − <title>DRM MM Range Allocator Function References</title> | |
| 942 | −!Edrivers/gpu/drm/drm_mm.c | |
| 943 | −!Iinclude/drm/drm_mm.h | |
| 944 | − </sect2> | |
| 945 | − <sect2> | |
| 946 | − <title>CMA Helper Functions Reference</title> | |
| 947 | −!Pdrivers/gpu/drm/drm_gem_cma_helper.c cma helpers | |
| 948 | −!Edrivers/gpu/drm/drm_gem_cma_helper.c | |
| 949 | −!Iinclude/drm/drm_gem_cma_helper.h | |
| 950 | − </sect2> | |
| 951 | − </sect1> | |
| 952 | − | |
| 953 | − <!-- Internals: mode setting --> | |
| 954 | − | |
| 955 | − <sect1 id="drm-mode-setting"> | |
| 956 | − <title>Mode Setting</title> | |
| 957 | − <para> | |
| 958 | − Drivers must initialize the mode setting core by calling | |
| 959 | − <function>drm_mode_config_init</function> on the DRM device. The function | |
| 960 | − initializes the <structname>drm_device</structname> | |
| 961 | − <structfield>mode_config</structfield> field and never fails. Once done, | |
| 962 | − mode configuration must be setup by initializing the following fields. | |
| 963 | − </para> | |
| 964 | − <itemizedlist> | |
| 965 | − <listitem> | |
| 966 | − <synopsis>int min_width, min_height; | |
| 967 | −int max_width, max_height;</synopsis> | |
| 968 | − <para> | |
| 969 | − Minimum and maximum width and height of the frame buffers in pixel | |
| 970 | − units. | |
| 971 | − </para> | |
| 972 | − </listitem> | |
| 973 | − <listitem> | |
| 974 | − <synopsis>struct drm_mode_config_funcs *funcs;</synopsis> | |
| 975 | − <para>Mode setting functions.</para> | |
| 976 | − </listitem> | |
| 977 | − </itemizedlist> | |
| 978 | − <sect2> | |
| 979 | − <title>Display Modes Function Reference</title> | |
| 980 | −!Iinclude/drm/drm_modes.h | |
| 981 | −!Edrivers/gpu/drm/drm_modes.c | |
| 982 | − </sect2> | |
| 983 | − <sect2> | |
| 984 | − <title>Atomic Mode Setting Function Reference</title> | |
| 985 | −!Edrivers/gpu/drm/drm_atomic.c | |
| 986 | −!Idrivers/gpu/drm/drm_atomic.c | |
| 987 | − </sect2> | |
| 988 | − <sect2> | |
| 989 | − <title>Frame Buffer Abstraction</title> | |
| 990 | − <para> | |
| 991 | − Frame buffers are abstract memory objects that provide a source of | |
| 992 | − pixels to scanout to a CRTC. Applications explicitly request the | |
| 993 | − creation of frame buffers through the DRM_IOCTL_MODE_ADDFB(2) ioctls and | |
| 994 | − receive an opaque handle that can be passed to the KMS CRTC control, | |
| 995 | − plane configuration and page flip functions. | |
| 996 | − </para> | |
| 997 | − <para> | |
| 998 | − Frame buffers rely on the underneath memory manager for low-level memory | |
| 999 | − operations. When creating a frame buffer applications pass a memory | |
| 1000 | − handle (or a list of memory handles for multi-planar formats) through | |
| 1001 | − the <parameter>drm_mode_fb_cmd2</parameter> argument. For drivers using | |
| 1002 | − GEM as their userspace buffer management interface this would be a GEM | |
| 1003 | − handle. Drivers are however free to use their own backing storage object | |
| 1004 | − handles, e.g. vmwgfx directly exposes special TTM handles to userspace | |
| 1005 | − and so expects TTM handles in the create ioctl and not GEM handles. | |
| 1006 | − </para> | |
| 1007 | − <para> | |
| 1008 | − The lifetime of a drm framebuffer is controlled with a reference count, | |
| 1009 | − drivers can grab additional references with | |
| 1010 | − <function>drm_framebuffer_reference</function>and drop them | |
| 1011 | − again with <function>drm_framebuffer_unreference</function>. For | |
| 1012 | − driver-private framebuffers for which the last reference is never | |
| 1013 | − dropped (e.g. for the fbdev framebuffer when the struct | |
| 1014 | − <structname>drm_framebuffer</structname> is embedded into the fbdev | |
| 1015 | − helper struct) drivers can manually clean up a framebuffer at module | |
| 1016 | − unload time with | |
| 1017 | − <function>drm_framebuffer_unregister_private</function>. | |
| 1018 | − </para> | |
| 1019 | − </sect2> | |
| 1020 | − <sect2> | |
| 1021 | − <title>Dumb Buffer Objects</title> | |
| 1022 | − <para> | |
| 1023 | − The KMS API doesn't standardize backing storage object creation and | |
| 1024 | − leaves it to driver-specific ioctls. Furthermore actually creating a | |
| 1025 | − buffer object even for GEM-based drivers is done through a | |
| 1026 | − driver-specific ioctl - GEM only has a common userspace interface for | |
| 1027 | − sharing and destroying objects. While not an issue for full-fledged | |
| 1028 | − graphics stacks that include device-specific userspace components (in | |
| 1029 | − libdrm for instance), this limit makes DRM-based early boot graphics | |
| 1030 | − unnecessarily complex. | |
| 1031 | − </para> | |
| 1032 | − <para> | |
| 1033 | − Dumb objects partly alleviate the problem by providing a standard | |
| 1034 | − API to create dumb buffers suitable for scanout, which can then be used | |
| 1035 | − to create KMS frame buffers. | |
| 1036 | − </para> | |
| 1037 | − <para> | |
| 1038 | − To support dumb objects drivers must implement the | |
| 1039 | − <methodname>dumb_create</methodname>, | |
| 1040 | − <methodname>dumb_destroy</methodname> and | |
| 1041 | − <methodname>dumb_map_offset</methodname> operations. | |
| 1042 | − </para> | |
| 1043 | − <itemizedlist> | |
| 1044 | − <listitem> | |
| 1045 | − <synopsis>int (*dumb_create)(struct drm_file *file_priv, struct drm_device *dev, | |
| 1046 | − struct drm_mode_create_dumb *args);</synopsis> | |
| 1047 | − <para> | |
| 1048 | − The <methodname>dumb_create</methodname> operation creates a driver | |
| 1049 | − object (GEM or TTM handle) suitable for scanout based on the | |
| 1050 | − width, height and depth from the struct | |
| 1051 | − <structname>drm_mode_create_dumb</structname> argument. It fills the | |
| 1052 | − argument's <structfield>handle</structfield>, | |
| 1053 | − <structfield>pitch</structfield> and <structfield>size</structfield> | |
| 1054 | − fields with a handle for the newly created object and its line | |
| 1055 | − pitch and size in bytes. | |
| 1056 | − </para> | |
| 1057 | − </listitem> | |
| 1058 | − <listitem> | |
| 1059 | − <synopsis>int (*dumb_destroy)(struct drm_file *file_priv, struct drm_device *dev, | |
| 1060 | − uint32_t handle);</synopsis> | |
| 1061 | − <para> | |
| 1062 | − The <methodname>dumb_destroy</methodname> operation destroys a dumb | |
| 1063 | − object created by <methodname>dumb_create</methodname>. | |
| 1064 | − </para> | |
| 1065 | − </listitem> | |
| 1066 | − <listitem> | |
| 1067 | − <synopsis>int (*dumb_map_offset)(struct drm_file *file_priv, struct drm_device *dev, | |
| 1068 | − uint32_t handle, uint64_t *offset);</synopsis> | |
| 1069 | − <para> | |
| 1070 | − The <methodname>dumb_map_offset</methodname> operation associates an | |
| 1071 | − mmap fake offset with the object given by the handle and returns | |
| 1072 | − it. Drivers must use the | |
| 1073 | − <function>drm_gem_create_mmap_offset</function> function to | |
| 1074 | − associate the fake offset as described in | |
| 1075 | − <xref linkend="drm-gem-objects-mapping"/>. | |
| 1076 | − </para> | |
| 1077 | − </listitem> | |
| 1078 | − </itemizedlist> | |
| 1079 | − <para> | |
| 1080 | − Note that dumb objects may not be used for gpu acceleration, as has been | |
| 1081 | − attempted on some ARM embedded platforms. Such drivers really must have | |
| 1082 | − a hardware-specific ioctl to allocate suitable buffer objects. | |
| 1083 | − </para> | |
| 1084 | − </sect2> | |
| 1085 | − <sect2> | |
| 1086 | − <title>Output Polling</title> | |
| 1087 | − <synopsis>void (*output_poll_changed)(struct drm_device *dev);</synopsis> | |
| 1088 | − <para> | |
| 1089 | − This operation notifies the driver that the status of one or more | |
| 1090 | − connectors has changed. Drivers that use the fb helper can just call the | |
| 1091 | − <function>drm_fb_helper_hotplug_event</function> function to handle this | |
| 1092 | − operation. | |
| 1093 | − </para> | |
| 1094 | − </sect2> | |
| 1095 | − <sect2> | |
| 1096 | − <title>Locking</title> | |
| 1097 | − <para> | |
| 1098 | − Beside some lookup structures with their own locking (which is hidden | |
| 1099 | − behind the interface functions) most of the modeset state is protected | |
| 1100 | − by the <code>dev-<mode_config.lock</code> mutex and additionally | |
| 1101 | − per-crtc locks to allow cursor updates, pageflips and similar operations | |
| 1102 | − to occur concurrently with background tasks like output detection. | |
| 1103 | − Operations which cross domains like a full modeset always grab all | |
| 1104 | − locks. Drivers there need to protect resources shared between crtcs with | |
| 1105 | − additional locking. They also need to be careful to always grab the | |
| 1106 | − relevant crtc locks if a modset functions touches crtc state, e.g. for | |
| 1107 | − load detection (which does only grab the <code>mode_config.lock</code> | |
| 1108 | − to allow concurrent screen updates on live crtcs). | |
| 1109 | − </para> | |
| 1110 | − </sect2> | |
| 1111 | − </sect1> | |
| 1112 | − | |
| 1113 | − <!-- Internals: kms initialization and cleanup --> | |
| 1114 | − | |
| 1115 | − <sect1 id="drm-kms-init"> | |
| 1116 | − <title>KMS Initialization and Cleanup</title> | |
| 1117 | − <para> | |
| 1118 | − A KMS device is abstracted and exposed as a set of planes, CRTCs, encoders | |
| 1119 | − and connectors. KMS drivers must thus create and initialize all those | |
| 1120 | − objects at load time after initializing mode setting. | |
| 1121 | − </para> | |
| 1122 | − <sect2> | |
| 1123 | − <title>CRTCs (struct <structname>drm_crtc</structname>)</title> | |
| 1124 | − <para> | |
| 1125 | − A CRTC is an abstraction representing a part of the chip that contains a | |
| 1126 | − pointer to a scanout buffer. Therefore, the number of CRTCs available | |
| 1127 | − determines how many independent scanout buffers can be active at any | |
| 1128 | − given time. The CRTC structure contains several fields to support this: | |
| 1129 | − a pointer to some video memory (abstracted as a frame buffer object), a | |
| 1130 | − display mode, and an (x, y) offset into the video memory to support | |
| 1131 | − panning or configurations where one piece of video memory spans multiple | |
| 1132 | − CRTCs. | |
| 1133 | − </para> | |
| 1134 | − <sect3> | |
| 1135 | − <title>CRTC Initialization</title> | |
| 1136 | − <para> | |
| 1137 | − A KMS device must create and register at least one struct | |
| 1138 | − <structname>drm_crtc</structname> instance. The instance is allocated | |
| 1139 | − and zeroed by the driver, possibly as part of a larger structure, and | |
| 1140 | − registered with a call to <function>drm_crtc_init</function> with a | |
| 1141 | − pointer to CRTC functions. | |
| 1142 | − </para> | |
| 1143 | − </sect3> | |
| 1144 | − </sect2> | |
| 1145 | − <sect2> | |
| 1146 | − <title>Planes (struct <structname>drm_plane</structname>)</title> | |
| 1147 | − <para> | |
| 1148 | − A plane represents an image source that can be blended with or overlayed | |
| 1149 | − on top of a CRTC during the scanout process. Planes are associated with | |
| 1150 | − a frame buffer to crop a portion of the image memory (source) and | |
| 1151 | − optionally scale it to a destination size. The result is then blended | |
| 1152 | − with or overlayed on top of a CRTC. | |
| 1153 | − </para> | |
| 1154 | − <para> | |
| 1155 | − The DRM core recognizes three types of planes: | |
| 1156 | − <itemizedlist> | |
| 1157 | − <listitem> | |
| 1158 | − DRM_PLANE_TYPE_PRIMARY represents a "main" plane for a CRTC. Primary | |
| 1159 | − planes are the planes operated upon by CRTC modesetting and flipping | |
| 1160 | − operations described in the page_flip hook in <structname>drm_crtc_funcs</structname>. | |
| 1161 | − </listitem> | |
| 1162 | − <listitem> | |
| 1163 | − DRM_PLANE_TYPE_CURSOR represents a "cursor" plane for a CRTC. Cursor | |
| 1164 | − planes are the planes operated upon by the DRM_IOCTL_MODE_CURSOR and | |
| 1165 | − DRM_IOCTL_MODE_CURSOR2 ioctls. | |
| 1166 | − </listitem> | |
| 1167 | − <listitem> | |
| 1168 | − DRM_PLANE_TYPE_OVERLAY represents all non-primary, non-cursor planes. | |
| 1169 | − Some drivers refer to these types of planes as "sprites" internally. | |
| 1170 | − </listitem> | |
| 1171 | − </itemizedlist> | |
| 1172 | − For compatibility with legacy userspace, only overlay planes are made | |
| 1173 | − available to userspace by default. Userspace clients may set the | |
| 1174 | − DRM_CLIENT_CAP_UNIVERSAL_PLANES client capability bit to indicate that | |
| 1175 | − they wish to receive a universal plane list containing all plane types. | |
| 1176 | − </para> | |
| 1177 | − <sect3> | |
| 1178 | − <title>Plane Initialization</title> | |
| 1179 | − <para> | |
| 1180 | − To create a plane, a KMS drivers allocates and | |
| 1181 | − zeroes an instances of struct <structname>drm_plane</structname> | |
| 1182 | − (possibly as part of a larger structure) and registers it with a call | |
| 1183 | − to <function>drm_universal_plane_init</function>. The function takes a bitmask | |
| 1184 | − of the CRTCs that can be associated with the plane, a pointer to the | |
| 1185 | − plane functions, a list of format supported formats, and the type of | |
| 1186 | − plane (primary, cursor, or overlay) being initialized. | |
| 1187 | − </para> | |
| 1188 | − <para> | |
| 1189 | − Cursor and overlay planes are optional. All drivers should provide | |
| 1190 | − one primary plane per CRTC (although this requirement may change in | |
| 1191 | − the future); drivers that do not wish to provide special handling for | |
| 1192 | − primary planes may make use of the helper functions described in | |
| 1193 | − <xref linkend="drm-kms-planehelpers"/> to create and register a | |
| 1194 | − primary plane with standard capabilities. | |
| 1195 | − </para> | |
| 1196 | − </sect3> | |
| 1197 | − </sect2> | |
| 1198 | − <sect2> | |
| 1199 | − <title>Encoders (struct <structname>drm_encoder</structname>)</title> | |
| 1200 | − <para> | |
| 1201 | − An encoder takes pixel data from a CRTC and converts it to a format | |
| 1202 | − suitable for any attached connectors. On some devices, it may be | |
| 1203 | − possible to have a CRTC send data to more than one encoder. In that | |
| 1204 | − case, both encoders would receive data from the same scanout buffer, | |
| 1205 | − resulting in a "cloned" display configuration across the connectors | |
| 1206 | − attached to each encoder. | |
| 1207 | − </para> | |
| 1208 | − <sect3> | |
| 1209 | − <title>Encoder Initialization</title> | |
| 1210 | − <para> | |
| 1211 | − As for CRTCs, a KMS driver must create, initialize and register at | |
| 1212 | − least one struct <structname>drm_encoder</structname> instance. The | |
| 1213 | − instance is allocated and zeroed by the driver, possibly as part of a | |
| 1214 | − larger structure. | |
| 1215 | − </para> | |
| 1216 | − <para> | |
| 1217 | − Drivers must initialize the struct <structname>drm_encoder</structname> | |
| 1218 | − <structfield>possible_crtcs</structfield> and | |
| 1219 | − <structfield>possible_clones</structfield> fields before registering the | |
| 1220 | − encoder. Both fields are bitmasks of respectively the CRTCs that the | |
| 1221 | − encoder can be connected to, and sibling encoders candidate for cloning. | |
| 1222 | − </para> | |
| 1223 | − <para> | |
| 1224 | − After being initialized, the encoder must be registered with a call to | |
| 1225 | − <function>drm_encoder_init</function>. The function takes a pointer to | |
| 1226 | − the encoder functions and an encoder type. Supported types are | |
| 1227 | − <itemizedlist> | |
| 1228 | − <listitem> | |
| 1229 | − DRM_MODE_ENCODER_DAC for VGA and analog on DVI-I/DVI-A | |
| 1230 | − </listitem> | |
| 1231 | − <listitem> | |
| 1232 | − DRM_MODE_ENCODER_TMDS for DVI, HDMI and (embedded) DisplayPort | |
| 1233 | − </listitem> | |
| 1234 | − <listitem> | |
| 1235 | − DRM_MODE_ENCODER_LVDS for display panels | |
| 1236 | − </listitem> | |
| 1237 | − <listitem> | |
| 1238 | − DRM_MODE_ENCODER_TVDAC for TV output (Composite, S-Video, Component, | |
| 1239 | − SCART) | |
| 1240 | − </listitem> | |
| 1241 | − <listitem> | |
| 1242 | − DRM_MODE_ENCODER_VIRTUAL for virtual machine displays | |
| 1243 | − </listitem> | |
| 1244 | − </itemizedlist> | |
| 1245 | − </para> | |
| 1246 | − <para> | |
| 1247 | − Encoders must be attached to a CRTC to be used. DRM drivers leave | |
| 1248 | − encoders unattached at initialization time. Applications (or the fbdev | |
| 1249 | − compatibility layer when implemented) are responsible for attaching the | |
| 1250 | − encoders they want to use to a CRTC. | |
| 1251 | − </para> | |
| 1252 | − </sect3> | |
| 1253 | − </sect2> | |
| 1254 | − <sect2> | |
| 1255 | − <title>Connectors (struct <structname>drm_connector</structname>)</title> | |
| 1256 | − <para> | |
| 1257 | − A connector is the final destination for pixel data on a device, and | |
| 1258 | − usually connects directly to an external display device like a monitor | |
| 1259 | − or laptop panel. A connector can only be attached to one encoder at a | |
| 1260 | − time. The connector is also the structure where information about the | |
| 1261 | − attached display is kept, so it contains fields for display data, EDID | |
| 1262 | − data, DPMS & connection status, and information about modes | |
| 1263 | − supported on the attached displays. | |
| 1264 | − </para> | |
| 1265 | − <sect3> | |
| 1266 | − <title>Connector Initialization</title> | |
| 1267 | − <para> | |
| 1268 | − Finally a KMS driver must create, initialize, register and attach at | |
| 1269 | − least one struct <structname>drm_connector</structname> instance. The | |
| 1270 | − instance is created as other KMS objects and initialized by setting the | |
| 1271 | − following fields. | |
| 1272 | − </para> | |
| 1273 | − <variablelist> | |
| 1274 | − <varlistentry> | |
| 1275 | − <term><structfield>interlace_allowed</structfield></term> | |
| 1276 | − <listitem><para> | |
| 1277 | − Whether the connector can handle interlaced modes. | |
| 1278 | − </para></listitem> | |
| 1279 | − </varlistentry> | |
| 1280 | − <varlistentry> | |
| 1281 | − <term><structfield>doublescan_allowed</structfield></term> | |
| 1282 | − <listitem><para> | |
| 1283 | − Whether the connector can handle doublescan. | |
| 1284 | − </para></listitem> | |
| 1285 | − </varlistentry> | |
| 1286 | − <varlistentry> | |
| 1287 | − <term><structfield>display_info | |
| 1288 | − </structfield></term> | |
| 1289 | − <listitem><para> | |
| 1290 | − Display information is filled from EDID information when a display | |
| 1291 | − is detected. For non hot-pluggable displays such as flat panels in | |
| 1292 | − embedded systems, the driver should initialize the | |
| 1293 | − <structfield>display_info</structfield>.<structfield>width_mm</structfield> | |
| 1294 | − and | |
| 1295 | − <structfield>display_info</structfield>.<structfield>height_mm</structfield> | |
| 1296 | − fields with the physical size of the display. | |
| 1297 | − </para></listitem> | |
| 1298 | − </varlistentry> | |
| 1299 | − <varlistentry> | |
| 1300 | − <term id="drm-kms-connector-polled"><structfield>polled</structfield></term> | |
| 1301 | − <listitem><para> | |
| 1302 | − Connector polling mode, a combination of | |
| 1303 | − <variablelist> | |
| 1304 | − <varlistentry> | |
| 1305 | − <term>DRM_CONNECTOR_POLL_HPD</term> | |
| 1306 | − <listitem><para> | |
| 1307 | − The connector generates hotplug events and doesn't need to be | |
| 1308 | − periodically polled. The CONNECT and DISCONNECT flags must not | |
| 1309 | − be set together with the HPD flag. | |
| 1310 | − </para></listitem> | |
| 1311 | − </varlistentry> | |
| 1312 | − <varlistentry> | |
| 1313 | − <term>DRM_CONNECTOR_POLL_CONNECT</term> | |
| 1314 | − <listitem><para> | |
| 1315 | − Periodically poll the connector for connection. | |
| 1316 | − </para></listitem> | |
| 1317 | − </varlistentry> | |
| 1318 | − <varlistentry> | |
| 1319 | − <term>DRM_CONNECTOR_POLL_DISCONNECT</term> | |
| 1320 | − <listitem><para> | |
| 1321 | − Periodically poll the connector for disconnection. | |
| 1322 | − </para></listitem> | |
| 1323 | − </varlistentry> | |
| 1324 | − </variablelist> | |
| 1325 | − Set to 0 for connectors that don't support connection status | |
| 1326 | − discovery. | |
| 1327 | − </para></listitem> | |
| 1328 | − </varlistentry> | |
| 1329 | − </variablelist> | |
| 1330 | − <para> | |
| 1331 | − The connector is then registered with a call to | |
| 1332 | − <function>drm_connector_init</function> with a pointer to the connector | |
| 1333 | − functions and a connector type, and exposed through sysfs with a call to | |
| 1334 | − <function>drm_connector_register</function>. | |
| 1335 | − </para> | |
| 1336 | − <para> | |
| 1337 | − Supported connector types are | |
| 1338 | − <itemizedlist> | |
| 1339 | − <listitem>DRM_MODE_CONNECTOR_VGA</listitem> | |
| 1340 | − <listitem>DRM_MODE_CONNECTOR_DVII</listitem> | |
| 1341 | − <listitem>DRM_MODE_CONNECTOR_DVID</listitem> | |
| 1342 | − <listitem>DRM_MODE_CONNECTOR_DVIA</listitem> | |
| 1343 | − <listitem>DRM_MODE_CONNECTOR_Composite</listitem> | |
| 1344 | − <listitem>DRM_MODE_CONNECTOR_SVIDEO</listitem> | |
| 1345 | − <listitem>DRM_MODE_CONNECTOR_LVDS</listitem> | |
| 1346 | − <listitem>DRM_MODE_CONNECTOR_Component</listitem> | |
| 1347 | − <listitem>DRM_MODE_CONNECTOR_9PinDIN</listitem> | |
| 1348 | − <listitem>DRM_MODE_CONNECTOR_DisplayPort</listitem> | |
| 1349 | − <listitem>DRM_MODE_CONNECTOR_HDMIA</listitem> | |
| 1350 | − <listitem>DRM_MODE_CONNECTOR_HDMIB</listitem> | |
| 1351 | − <listitem>DRM_MODE_CONNECTOR_TV</listitem> | |
| 1352 | − <listitem>DRM_MODE_CONNECTOR_eDP</listitem> | |
| 1353 | − <listitem>DRM_MODE_CONNECTOR_VIRTUAL</listitem> | |
| 1354 | − </itemizedlist> | |
| 1355 | − </para> | |
| 1356 | − <para> | |
| 1357 | − Connectors must be attached to an encoder to be used. For devices that | |
| 1358 | − map connectors to encoders 1:1, the connector should be attached at | |
| 1359 | − initialization time with a call to | |
| 1360 | − <function>drm_mode_connector_attach_encoder</function>. The driver must | |
| 1361 | − also set the <structname>drm_connector</structname> | |
| 1362 | − <structfield>encoder</structfield> field to point to the attached | |
| 1363 | − encoder. | |
| 1364 | − </para> | |
| 1365 | − <para> | |
| 1366 | − Finally, drivers must initialize the connectors state change detection | |
| 1367 | − with a call to <function>drm_kms_helper_poll_init</function>. If at | |
| 1368 | − least one connector is pollable but can't generate hotplug interrupts | |
| 1369 | − (indicated by the DRM_CONNECTOR_POLL_CONNECT and | |
| 1370 | − DRM_CONNECTOR_POLL_DISCONNECT connector flags), a delayed work will | |
| 1371 | − automatically be queued to periodically poll for changes. Connectors | |
| 1372 | − that can generate hotplug interrupts must be marked with the | |
| 1373 | − DRM_CONNECTOR_POLL_HPD flag instead, and their interrupt handler must | |
| 1374 | − call <function>drm_helper_hpd_irq_event</function>. The function will | |
| 1375 | − queue a delayed work to check the state of all connectors, but no | |
| 1376 | − periodic polling will be done. | |
| 1377 | − </para> | |
| 1378 | − </sect3> | |
| 1379 | − <sect3> | |
| 1380 | − <title>Connector Operations</title> | |
| 1381 | − <note><para> | |
| 1382 | − Unless otherwise state, all operations are mandatory. | |
| 1383 | − </para></note> | |
| 1384 | − <sect4> | |
| 1385 | − <title>DPMS</title> | |
| 1386 | − <synopsis>void (*dpms)(struct drm_connector *connector, int mode);</synopsis> | |
| 1387 | − <para> | |
| 1388 | − The DPMS operation sets the power state of a connector. The mode | |
| 1389 | − argument is one of | |
| 1390 | − <itemizedlist> | |
| 1391 | − <listitem><para>DRM_MODE_DPMS_ON</para></listitem> | |
| 1392 | − <listitem><para>DRM_MODE_DPMS_STANDBY</para></listitem> | |
| 1393 | − <listitem><para>DRM_MODE_DPMS_SUSPEND</para></listitem> | |
| 1394 | − <listitem><para>DRM_MODE_DPMS_OFF</para></listitem> | |
| 1395 | − </itemizedlist> | |
| 1396 | − </para> | |
| 1397 | − <para> | |
| 1398 | − In all but DPMS_ON mode the encoder to which the connector is attached | |
| 1399 | − should put the display in low-power mode by driving its signals | |
| 1400 | − appropriately. If more than one connector is attached to the encoder | |
| 1401 | − care should be taken not to change the power state of other displays as | |
| 1402 | − a side effect. Low-power mode should be propagated to the encoders and | |
| 1403 | − CRTCs when all related connectors are put in low-power mode. | |
| 1404 | − </para> | |
| 1405 | − </sect4> | |
| 1406 | − <sect4> | |
| 1407 | − <title>Modes</title> | |
| 1408 | − <synopsis>int (*fill_modes)(struct drm_connector *connector, uint32_t max_width, | |
| 1409 | − uint32_t max_height);</synopsis> | |
| 1410 | − <para> | |
| 1411 | − Fill the mode list with all supported modes for the connector. If the | |
| 1412 | − <parameter>max_width</parameter> and <parameter>max_height</parameter> | |
| 1413 | − arguments are non-zero, the implementation must ignore all modes wider | |
| 1414 | − than <parameter>max_width</parameter> or higher than | |
| 1415 | − <parameter>max_height</parameter>. | |
| 1416 | − </para> | |
| 1417 | − <para> | |
| 1418 | − The connector must also fill in this operation its | |
| 1419 | − <structfield>display_info</structfield> | |
| 1420 | − <structfield>width_mm</structfield> and | |
| 1421 | − <structfield>height_mm</structfield> fields with the connected display | |
| 1422 | − physical size in millimeters. The fields should be set to 0 if the value | |
| 1423 | − isn't known or is not applicable (for instance for projector devices). | |
| 1424 | − </para> | |
| 1425 | − </sect4> | |
| 1426 | − <sect4> | |
| 1427 | − <title>Connection Status</title> | |
| 1428 | − <para> | |
| 1429 | − The connection status is updated through polling or hotplug events when | |
| 1430 | − supported (see <xref linkend="drm-kms-connector-polled"/>). The status | |
| 1431 | − value is reported to userspace through ioctls and must not be used | |
| 1432 | − inside the driver, as it only gets initialized by a call to | |
| 1433 | − <function>drm_mode_getconnector</function> from userspace. | |
| 1434 | − </para> | |
| 1435 | − <synopsis>enum drm_connector_status (*detect)(struct drm_connector *connector, | |
| 1436 | − bool force);</synopsis> | |
| 1437 | − <para> | |
| 1438 | − Check to see if anything is attached to the connector. The | |
| 1439 | − <parameter>force</parameter> parameter is set to false whilst polling or | |
| 1440 | − to true when checking the connector due to user request. | |
| 1441 | − <parameter>force</parameter> can be used by the driver to avoid | |
| 1442 | − expensive, destructive operations during automated probing. | |
| 1443 | − </para> | |
| 1444 | − <para> | |
| 1445 | − Return connector_status_connected if something is connected to the | |
| 1446 | − connector, connector_status_disconnected if nothing is connected and | |
| 1447 | − connector_status_unknown if the connection state isn't known. | |
| 1448 | − </para> | |
| 1449 | − <para> | |
| 1450 | − Drivers should only return connector_status_connected if the connection | |
| 1451 | − status has really been probed as connected. Connectors that can't detect | |
| 1452 | − the connection status, or failed connection status probes, should return | |
| 1453 | − connector_status_unknown. | |
| 1454 | − </para> | |
| 1455 | − </sect4> | |
| 1456 | − </sect3> | |
| 1457 | − </sect2> | |
| 1458 | − <sect2> | |
| 1459 | − <title>Cleanup</title> | |
| 1460 | − <para> | |
| 1461 | − The DRM core manages its objects' lifetime. When an object is not needed | |
| 1462 | − anymore the core calls its destroy function, which must clean up and | |
| 1463 | − free every resource allocated for the object. Every | |
| 1464 | − <function>drm_*_init</function> call must be matched with a | |
| 1465 | − corresponding <function>drm_*_cleanup</function> call to cleanup CRTCs | |
| 1466 | − (<function>drm_crtc_cleanup</function>), planes | |
| 1467 | − (<function>drm_plane_cleanup</function>), encoders | |
| 1468 | − (<function>drm_encoder_cleanup</function>) and connectors | |
| 1469 | − (<function>drm_connector_cleanup</function>). Furthermore, connectors | |
| 1470 | − that have been added to sysfs must be removed by a call to | |
| 1471 | − <function>drm_connector_unregister</function> before calling | |
| 1472 | − <function>drm_connector_cleanup</function>. | |
| 1473 | − </para> | |
| 1474 | − <para> | |
| 1475 | − Connectors state change detection must be cleanup up with a call to | |
| 1476 | − <function>drm_kms_helper_poll_fini</function>. | |
| 1477 | − </para> | |
| 1478 | − </sect2> | |
| 1479 | − <sect2> | |
| 1480 | − <title>Output discovery and initialization example</title> | |
| 1481 | − <programlisting><![CDATA[ | |
| 1482 | −void intel_crt_init(struct drm_device *dev) | |
| 1483 | −{ | |
| 1484 | − struct drm_connector *connector; | |
| 1485 | − struct intel_output *intel_output; | |
| 1486 | − | |
| 1487 | − intel_output = kzalloc(sizeof(struct intel_output), GFP_KERNEL); | |
| 1488 | − if (!intel_output) | |
| 1489 | − return; | |
| 1490 | − | |
| 1491 | − connector = &intel_output->base; | |
| 1492 | − drm_connector_init(dev, &intel_output->base, | |
| 1493 | − &intel_crt_connector_funcs, DRM_MODE_CONNECTOR_VGA); | |
| 1494 | − | |
| 1495 | − drm_encoder_init(dev, &intel_output->enc, &intel_crt_enc_funcs, | |
| 1496 | − DRM_MODE_ENCODER_DAC); | |
| 1497 | − | |
| 1498 | − drm_mode_connector_attach_encoder(&intel_output->base, | |
| 1499 | − &intel_output->enc); | |
| 1500 | − | |
| 1501 | − /* Set up the DDC bus. */ | |
| 1502 | − intel_output->ddc_bus = intel_i2c_create(dev, GPIOA, "CRTDDC_A"); | |
| 1503 | − if (!intel_output->ddc_bus) { | |
| 1504 | − dev_printk(KERN_ERR, &dev->pdev->dev, "DDC bus registration " | |
| 1505 | − "failed.\n"); | |
| 1506 | − return; | |
| 1507 | − } | |
| 1508 | − | |
| 1509 | − intel_output->type = INTEL_OUTPUT_ANALOG; | |
| 1510 | − connector->interlace_allowed = 0; | |
| 1511 | − connector->doublescan_allowed = 0; | |
| 1512 | − | |
| 1513 | − drm_encoder_helper_add(&intel_output->enc, &intel_crt_helper_funcs); | |
| 1514 | − drm_connector_helper_add(connector, &intel_crt_connector_helper_funcs); | |
| 1515 | − | |
| 1516 | − drm_connector_register(connector); | |
| 1517 | −}]]></programlisting> | |
| 1518 | − <para> | |
| 1519 | − In the example above (taken from the i915 driver), a CRTC, connector and | |
| 1520 | − encoder combination is created. A device-specific i2c bus is also | |
| 1521 | − created for fetching EDID data and performing monitor detection. Once | |
| 1522 | − the process is complete, the new connector is registered with sysfs to | |
| 1523 | − make its properties available to applications. | |
| 1524 | − </para> | |
| 1525 | − </sect2> | |
| 1526 | − <sect2> | |
| 1527 | − <title>KMS API Functions</title> | |
| 1528 | −!Edrivers/gpu/drm/drm_crtc.c | |
| 1529 | − </sect2> | |
| 1530 | − <sect2> | |
| 1531 | − <title>KMS Data Structures</title> | |
| 1532 | −!Iinclude/drm/drm_crtc.h | |
| 1533 | − </sect2> | |
| 1534 | − <sect2> | |
| 1535 | − <title>KMS Locking</title> | |
| 1536 | −!Pdrivers/gpu/drm/drm_modeset_lock.c kms locking | |
| 1537 | −!Iinclude/drm/drm_modeset_lock.h | |
| 1538 | −!Edrivers/gpu/drm/drm_modeset_lock.c | |
| 1539 | − </sect2> | |
| 1540 | − </sect1> | |
| 1541 | − | |
| 1542 | − <!-- Internals: kms helper functions --> | |
| 1543 | − | |
| 1544 | − <sect1> | |
| 1545 | − <title>Mode Setting Helper Functions</title> | |
| 1546 | − <para> | |
| 1547 | − The plane, CRTC, encoder and connector functions provided by the drivers | |
| 1548 | − implement the DRM API. They're called by the DRM core and ioctl handlers | |
| 1549 | − to handle device state changes and configuration request. As implementing | |
| 1550 | − those functions often requires logic not specific to drivers, mid-layer | |
| 1551 | − helper functions are available to avoid duplicating boilerplate code. | |
| 1552 | − </para> | |
| 1553 | − <para> | |
| 1554 | − The DRM core contains one mid-layer implementation. The mid-layer provides | |
| 1555 | − implementations of several plane, CRTC, encoder and connector functions | |
| 1556 | − (called from the top of the mid-layer) that pre-process requests and call | |
| 1557 | − lower-level functions provided by the driver (at the bottom of the | |
| 1558 | − mid-layer). For instance, the | |
| 1559 | − <function>drm_crtc_helper_set_config</function> function can be used to | |
| 1560 | − fill the struct <structname>drm_crtc_funcs</structname> | |
| 1561 | − <structfield>set_config</structfield> field. When called, it will split | |
| 1562 | − the <methodname>set_config</methodname> operation in smaller, simpler | |
| 1563 | − operations and call the driver to handle them. | |
| 1564 | − </para> | |
| 1565 | − <para> | |
| 1566 | − To use the mid-layer, drivers call <function>drm_crtc_helper_add</function>, | |
| 1567 | − <function>drm_encoder_helper_add</function> and | |
| 1568 | − <function>drm_connector_helper_add</function> functions to install their | |
| 1569 | − mid-layer bottom operations handlers, and fill the | |
| 1570 | − <structname>drm_crtc_funcs</structname>, | |
| 1571 | − <structname>drm_encoder_funcs</structname> and | |
| 1572 | − <structname>drm_connector_funcs</structname> structures with pointers to | |
| 1573 | − the mid-layer top API functions. Installing the mid-layer bottom operation | |
| 1574 | − handlers is best done right after registering the corresponding KMS object. | |
| 1575 | − </para> | |
| 1576 | − <para> | |
| 1577 | − The mid-layer is not split between CRTC, encoder and connector operations. | |
| 1578 | − To use it, a driver must provide bottom functions for all of the three KMS | |
| 1579 | − entities. | |
| 1580 | − </para> | |
| 1581 | − <sect2> | |
| 1582 | − <title>Atomic Modeset Helper Functions Reference</title> | |
| 1583 | − <sect3> | |
| 1584 | − <title>Overview</title> | |
| 1585 | −!Pdrivers/gpu/drm/drm_atomic_helper.c overview | |
| 1586 | − </sect3> | |
| 1587 | − <sect3> | |
| 1588 | − <title>Implementing Asynchronous Atomic Commit</title> | |
| 1589 | −!Pdrivers/gpu/drm/drm_atomic_helper.c implementing async commit | |
| 1590 | − </sect3> | |
| 1591 | − <sect3> | |
| 1592 | − <title>Atomic State Reset and Initialization</title> | |
| 1593 | −!Pdrivers/gpu/drm/drm_atomic_helper.c atomic state reset and initialization | |
| 1594 | − </sect3> | |
| 1595 | −!Iinclude/drm/drm_atomic_helper.h | |
| 1596 | −!Edrivers/gpu/drm/drm_atomic_helper.c | |
| 1597 | − </sect2> | |
| 1598 | − <sect2> | |
| 1599 | − <title>Modeset Helper Reference for Common Vtables</title> | |
| 1600 | −!Iinclude/drm/drm_modeset_helper_vtables.h | |
| 1601 | −!Pinclude/drm/drm_modeset_helper_vtables.h overview | |
| 1602 | − </sect2> | |
| 1603 | − <sect2> | |
| 1604 | − <title>Legacy CRTC/Modeset Helper Functions Reference</title> | |
| 1605 | −!Edrivers/gpu/drm/drm_crtc_helper.c | |
| 1606 | −!Pdrivers/gpu/drm/drm_crtc_helper.c overview | |
| 1607 | − </sect2> | |
| 1608 | − <sect2> | |
| 1609 | − <title>Output Probing Helper Functions Reference</title> | |
| 1610 | −!Pdrivers/gpu/drm/drm_probe_helper.c output probing helper overview | |
| 1611 | −!Edrivers/gpu/drm/drm_probe_helper.c | |
| 1612 | − </sect2> | |
| 1613 | − <sect2> | |
| 1614 | − <title>fbdev Helper Functions Reference</title> | |
| 1615 | −!Pdrivers/gpu/drm/drm_fb_helper.c fbdev helpers | |
| 1616 | −!Edrivers/gpu/drm/drm_fb_helper.c | |
| 1617 | −!Iinclude/drm/drm_fb_helper.h | |
| 1618 | − </sect2> | |
| 1619 | − <sect2> | |
| 1620 | − <title>Framebuffer CMA Helper Functions Reference</title> | |
| 1621 | −!Pdrivers/gpu/drm/drm_fb_cma_helper.c framebuffer cma helper functions | |
| 1622 | −!Edrivers/gpu/drm/drm_fb_cma_helper.c | |
| 1623 | − </sect2> | |
| 1624 | − <sect2> | |
| 1625 | − <title>Display Port Helper Functions Reference</title> | |
| 1626 | −!Pdrivers/gpu/drm/drm_dp_helper.c dp helpers | |
| 1627 | −!Iinclude/drm/drm_dp_helper.h | |
| 1628 | −!Edrivers/gpu/drm/drm_dp_helper.c | |
| 1629 | − </sect2> | |
| 1630 | − <sect2> | |
| 1631 | − <title>Display Port Dual Mode Adaptor Helper Functions Reference</title> | |
| 1632 | −!Pdrivers/gpu/drm/drm_dp_dual_mode_helper.c dp dual mode helpers | |
| 1633 | −!Iinclude/drm/drm_dp_dual_mode_helper.h | |
| 1634 | −!Edrivers/gpu/drm/drm_dp_dual_mode_helper.c | |
| 1635 | − </sect2> | |
| 1636 | − <sect2> | |
| 1637 | − <title>Display Port MST Helper Functions Reference</title> | |
| 1638 | −!Pdrivers/gpu/drm/drm_dp_mst_topology.c dp mst helper | |
| 1639 | −!Iinclude/drm/drm_dp_mst_helper.h | |
| 1640 | −!Edrivers/gpu/drm/drm_dp_mst_topology.c | |
| 1641 | − </sect2> | |
| 1642 | − <sect2> | |
| 1643 | − <title>MIPI DSI Helper Functions Reference</title> | |
| 1644 | −!Pdrivers/gpu/drm/drm_mipi_dsi.c dsi helpers | |
| 1645 | −!Iinclude/drm/drm_mipi_dsi.h | |
| 1646 | −!Edrivers/gpu/drm/drm_mipi_dsi.c | |
| 1647 | − </sect2> | |
| 1648 | − <sect2> | |
| 1649 | − <title>EDID Helper Functions Reference</title> | |
| 1650 | −!Edrivers/gpu/drm/drm_edid.c | |
| 1651 | − </sect2> | |
| 1652 | − <sect2> | |
| 1653 | − <title>Rectangle Utilities Reference</title> | |
| 1654 | −!Pinclude/drm/drm_rect.h rect utils | |
| 1655 | −!Iinclude/drm/drm_rect.h | |
| 1656 | −!Edrivers/gpu/drm/drm_rect.c | |
| 1657 | − </sect2> | |
| 1658 | − <sect2> | |
| 1659 | − <title>Flip-work Helper Reference</title> | |
| 1660 | −!Pinclude/drm/drm_flip_work.h flip utils | |
| 1661 | −!Iinclude/drm/drm_flip_work.h | |
| 1662 | −!Edrivers/gpu/drm/drm_flip_work.c | |
| 1663 | − </sect2> | |
| 1664 | − <sect2> | |
| 1665 | − <title>HDMI Infoframes Helper Reference</title> | |
| 1666 | − <para> | |
| 1667 | − Strictly speaking this is not a DRM helper library but generally useable | |
| 1668 | − by any driver interfacing with HDMI outputs like v4l or alsa drivers. | |
| 1669 | − But it nicely fits into the overall topic of mode setting helper | |
| 1670 | − libraries and hence is also included here. | |
| 1671 | − </para> | |
| 1672 | −!Iinclude/linux/hdmi.h | |
| 1673 | −!Edrivers/video/hdmi.c | |
| 1674 | − </sect2> | |
| 1675 | − <sect2> | |
| 1676 | − <title id="drm-kms-planehelpers">Plane Helper Reference</title> | |
| 1677 | −!Edrivers/gpu/drm/drm_plane_helper.c | |
| 1678 | −!Pdrivers/gpu/drm/drm_plane_helper.c overview | |
| 1679 | − </sect2> | |
| 1680 | − <sect2> | |
| 1681 | − <title>Tile group</title> | |
| 1682 | −!Pdrivers/gpu/drm/drm_crtc.c Tile group | |
| 1683 | − </sect2> | |
| 1684 | − <sect2> | |
| 1685 | − <title>Bridges</title> | |
| 1686 | − <sect3> | |
| 1687 | − <title>Overview</title> | |
| 1688 | −!Pdrivers/gpu/drm/drm_bridge.c overview | |
| 1689 | − </sect3> | |
| 1690 | − <sect3> | |
| 1691 | − <title>Default bridge callback sequence</title> | |
| 1692 | −!Pdrivers/gpu/drm/drm_bridge.c bridge callbacks | |
| 1693 | − </sect3> | |
| 1694 | −!Edrivers/gpu/drm/drm_bridge.c | |
| 1695 | − </sect2> | |
| 1696 | − <sect2> | |
| 1697 | − <title>Panel Helper Reference</title> | |
| 1698 | −!Iinclude/drm/drm_panel.h | |
| 1699 | −!Edrivers/gpu/drm/drm_panel.c | |
| 1700 | −!Pdrivers/gpu/drm/drm_panel.c drm panel | |
| 1701 | − </sect2> | |
| 1702 | − </sect1> | |
| 1703 | − | |
| 1704 | − <!-- Internals: kms properties --> | |
| 1705 | − | |
| 1706 | − <sect1 id="drm-kms-properties"> | |
| 1707 | − <title>KMS Properties</title> | |
| 1708 | − <para> | |
| 1709 | − Drivers may need to expose additional parameters to applications than | |
| 1710 | − those described in the previous sections. KMS supports attaching | |
| 1711 | − properties to CRTCs, connectors and planes and offers a userspace API to | |
| 1712 | − list, get and set the property values. | |
| 1713 | − </para> | |
| 1714 | − <para> | |
| 1715 | − Properties are identified by a name that uniquely defines the property | |
| 1716 | − purpose, and store an associated value. For all property types except blob | |
| 1717 | − properties the value is a 64-bit unsigned integer. | |
| 1718 | − </para> | |
| 1719 | − <para> | |
| 1720 | − KMS differentiates between properties and property instances. Drivers | |
| 1721 | − first create properties and then create and associate individual instances | |
| 1722 | − of those properties to objects. A property can be instantiated multiple | |
| 1723 | − times and associated with different objects. Values are stored in property | |
| 1724 | − instances, and all other property information are stored in the property | |
| 1725 | − and shared between all instances of the property. | |
| 1726 | − </para> | |
| 1727 | − <para> | |
| 1728 | − Every property is created with a type that influences how the KMS core | |
| 1729 | − handles the property. Supported property types are | |
| 1730 | − <variablelist> | |
| 1731 | − <varlistentry> | |
| 1732 | − <term>DRM_MODE_PROP_RANGE</term> | |
| 1733 | − <listitem><para>Range properties report their minimum and maximum | |
| 1734 | − admissible values. The KMS core verifies that values set by | |
| 1735 | − application fit in that range.</para></listitem> | |
| 1736 | − </varlistentry> | |
| 1737 | − <varlistentry> | |
| 1738 | − <term>DRM_MODE_PROP_ENUM</term> | |
| 1739 | − <listitem><para>Enumerated properties take a numerical value that | |
| 1740 | − ranges from 0 to the number of enumerated values defined by the | |
| 1741 | − property minus one, and associate a free-formed string name to each | |
| 1742 | − value. Applications can retrieve the list of defined value-name pairs | |
| 1743 | − and use the numerical value to get and set property instance values. | |
| 1744 | − </para></listitem> | |
| 1745 | − </varlistentry> | |
| 1746 | − <varlistentry> | |
| 1747 | − <term>DRM_MODE_PROP_BITMASK</term> | |
| 1748 | − <listitem><para>Bitmask properties are enumeration properties that | |
| 1749 | − additionally restrict all enumerated values to the 0..63 range. | |
| 1750 | − Bitmask property instance values combine one or more of the | |
| 1751 | − enumerated bits defined by the property.</para></listitem> | |
| 1752 | − </varlistentry> | |
| 1753 | − <varlistentry> | |
| 1754 | − <term>DRM_MODE_PROP_BLOB</term> | |
| 1755 | − <listitem><para>Blob properties store a binary blob without any format | |
| 1756 | − restriction. The binary blobs are created as KMS standalone objects, | |
| 1757 | − and blob property instance values store the ID of their associated | |
| 1758 | − blob object.</para> | |
| 1759 | − <para>Blob properties are only used for the connector EDID property | |
| 1760 | − and cannot be created by drivers.</para></listitem> | |
| 1761 | − </varlistentry> | |
| 1762 | − </variablelist> | |
| 1763 | − </para> | |
| 1764 | − <para> | |
| 1765 | − To create a property drivers call one of the following functions depending | |
| 1766 | − on the property type. All property creation functions take property flags | |
| 1767 | − and name, as well as type-specific arguments. | |
| 1768 | − <itemizedlist> | |
| 1769 | − <listitem> | |
| 1770 | − <synopsis>struct drm_property *drm_property_create_range(struct drm_device *dev, int flags, | |
| 1771 | − const char *name, | |
| 1772 | − uint64_t min, uint64_t max);</synopsis> | |
| 1773 | − <para>Create a range property with the given minimum and maximum | |
| 1774 | − values.</para> | |
| 1775 | − </listitem> | |
| 1776 | − <listitem> | |
| 1777 | − <synopsis>struct drm_property *drm_property_create_enum(struct drm_device *dev, int flags, | |
| 1778 | − const char *name, | |
| 1779 | − const struct drm_prop_enum_list *props, | |
| 1780 | − int num_values);</synopsis> | |
| 1781 | − <para>Create an enumerated property. The <parameter>props</parameter> | |
| 1782 | − argument points to an array of <parameter>num_values</parameter> | |
| 1783 | − value-name pairs.</para> | |
| 1784 | − </listitem> | |
| 1785 | − <listitem> | |
| 1786 | − <synopsis>struct drm_property *drm_property_create_bitmask(struct drm_device *dev, | |
| 1787 | − int flags, const char *name, | |
| 1788 | − const struct drm_prop_enum_list *props, | |
| 1789 | − int num_values);</synopsis> | |
| 1790 | − <para>Create a bitmask property. The <parameter>props</parameter> | |
| 1791 | − argument points to an array of <parameter>num_values</parameter> | |
| 1792 | − value-name pairs.</para> | |
| 1793 | − </listitem> | |
| 1794 | − </itemizedlist> | |
| 1795 | − </para> | |
| 1796 | − <para> | |
| 1797 | − Properties can additionally be created as immutable, in which case they | |
| 1798 | − will be read-only for applications but can be modified by the driver. To | |
| 1799 | − create an immutable property drivers must set the DRM_MODE_PROP_IMMUTABLE | |
| 1800 | − flag at property creation time. | |
| 1801 | − </para> | |
| 1802 | − <para> | |
| 1803 | − When no array of value-name pairs is readily available at property | |
| 1804 | − creation time for enumerated or range properties, drivers can create | |
| 1805 | − the property using the <function>drm_property_create</function> function | |
| 1806 | − and manually add enumeration value-name pairs by calling the | |
| 1807 | − <function>drm_property_add_enum</function> function. Care must be taken to | |
| 1808 | − properly specify the property type through the <parameter>flags</parameter> | |
| 1809 | − argument. | |
| 1810 | − </para> | |
| 1811 | − <para> | |
| 1812 | − After creating properties drivers can attach property instances to CRTC, | |
| 1813 | − connector and plane objects by calling the | |
| 1814 | − <function>drm_object_attach_property</function>. The function takes a | |
| 1815 | − pointer to the target object, a pointer to the previously created property | |
| 1816 | − and an initial instance value. | |
| 1817 | − </para> | |
| 1818 | − <sect2> | |
| 1819 | − <title>Existing KMS Properties</title> | |
| 1820 | − <para> | |
| 1821 | − The following table gives description of drm properties exposed by various | |
| 1822 | − modules/drivers. | |
| 1823 | − </para> | |
| 1824 | − <table border="1" cellpadding="0" cellspacing="0"> | |
| 1825 | − <tbody> | |
| 1826 | − <tr style="font-weight: bold;"> | |
| 1827 | − <td valign="top" >Owner Module/Drivers</td> | |
| 1828 | − <td valign="top" >Group</td> | |
| 1829 | − <td valign="top" >Property Name</td> | |
| 1830 | − <td valign="top" >Type</td> | |
| 1831 | − <td valign="top" >Property Values</td> | |
| 1832 | − <td valign="top" >Object attached</td> | |
| 1833 | − <td valign="top" >Description/Restrictions</td> | |
| 1834 | − </tr> | |
| 1835 | − <tr> | |
| 1836 | − <td rowspan="42" valign="top" >DRM</td> | |
| 1837 | − <td rowspan="2" valign="top" >Generic</td> | |
| 1838 | − <td valign="top" >“rotation”</td> | |
| 1839 | − <td valign="top" >BITMASK</td> | |
| 1840 | − <td valign="top" >{ 0, "rotate-0" }, | |
| 1841 | − { 1, "rotate-90" }, | |
| 1842 | − { 2, "rotate-180" }, | |
| 1843 | − { 3, "rotate-270" }, | |
| 1844 | − { 4, "reflect-x" }, | |
| 1845 | − { 5, "reflect-y" }</td> | |
| 1846 | − <td valign="top" >CRTC, Plane</td> | |
| 1847 | − <td valign="top" >rotate-(degrees) rotates the image by the specified amount in degrees | |
| 1848 | − in counter clockwise direction. reflect-x and reflect-y reflects the | |
| 1849 | − image along the specified axis prior to rotation</td> | |
| 1850 | − </tr> | |
| 1851 | − <tr> | |
| 1852 | − <td valign="top" >“scaling mode”</td> | |
| 1853 | − <td valign="top" >ENUM</td> | |
| 1854 | − <td valign="top" >{ "None", "Full", "Center", "Full aspect" }</td> | |
| 1855 | − <td valign="top" >Connector</td> | |
| 1856 | − <td valign="top" >Supported by: amdgpu, gma500, i915, nouveau and radeon.</td> | |
| 1857 | − </tr> | |
| 1858 | − <tr> | |
| 1859 | − <td rowspan="5" valign="top" >Connector</td> | |
| 1860 | − <td valign="top" >“EDID”</td> | |
| 1861 | − <td valign="top" >BLOB | IMMUTABLE</td> | |
| 1862 | − <td valign="top" >0</td> | |
| 1863 | − <td valign="top" >Connector</td> | |
| 1864 | − <td valign="top" >Contains id of edid blob ptr object.</td> | |
| 1865 | − </tr> | |
| 1866 | − <tr> | |
| 1867 | − <td valign="top" >“DPMS”</td> | |
| 1868 | − <td valign="top" >ENUM</td> | |
| 1869 | − <td valign="top" >{ “On”, “Standby”, “Suspend”, “Off” }</td> | |
| 1870 | − <td valign="top" >Connector</td> | |
| 1871 | − <td valign="top" >Contains DPMS operation mode value.</td> | |
| 1872 | − </tr> | |
| 1873 | − <tr> | |
| 1874 | − <td valign="top" >“PATH”</td> | |
| 1875 | − <td valign="top" >BLOB | IMMUTABLE</td> | |
| 1876 | − <td valign="top" >0</td> | |
| 1877 | − <td valign="top" >Connector</td> | |
| 1878 | − <td valign="top" >Contains topology path to a connector.</td> | |
| 1879 | − </tr> | |
| 1880 | − <tr> | |
| 1881 | − <td valign="top" >“TILE”</td> | |
| 1882 | − <td valign="top" >BLOB | IMMUTABLE</td> | |
| 1883 | − <td valign="top" >0</td> | |
| 1884 | − <td valign="top" >Connector</td> | |
| 1885 | − <td valign="top" >Contains tiling information for a connector.</td> | |
| 1886 | − </tr> | |
| 1887 | − <tr> | |
| 1888 | − <td valign="top" >“CRTC_ID”</td> | |
| 1889 | − <td valign="top" >OBJECT</td> | |
| 1890 | − <td valign="top" >DRM_MODE_OBJECT_CRTC</td> | |
| 1891 | − <td valign="top" >Connector</td> | |
| 1892 | − <td valign="top" >CRTC that connector is attached to (atomic)</td> | |
| 1893 | − </tr> | |
| 1894 | − <tr> | |
| 1895 | − <td rowspan="11" valign="top" >Plane</td> | |
| 1896 | − <td valign="top" >“type”</td> | |
| 1897 | − <td valign="top" >ENUM | IMMUTABLE</td> | |
| 1898 | − <td valign="top" >{ "Overlay", "Primary", "Cursor" }</td> | |
| 1899 | − <td valign="top" >Plane</td> | |
| 1900 | − <td valign="top" >Plane type</td> | |
| 1901 | − </tr> | |
| 1902 | − <tr> | |
| 1903 | − <td valign="top" >“SRC_X”</td> | |
| 1904 | − <td valign="top" >RANGE</td> | |
| 1905 | − <td valign="top" >Min=0, Max=UINT_MAX</td> | |
| 1906 | − <td valign="top" >Plane</td> | |
| 1907 | − <td valign="top" >Scanout source x coordinate in 16.16 fixed point (atomic)</td> | |
| 1908 | − </tr> | |
| 1909 | − <tr> | |
| 1910 | − <td valign="top" >“SRC_Y”</td> | |
| 1911 | − <td valign="top" >RANGE</td> | |
| 1912 | − <td valign="top" >Min=0, Max=UINT_MAX</td> | |
| 1913 | − <td valign="top" >Plane</td> | |
| 1914 | − <td valign="top" >Scanout source y coordinate in 16.16 fixed point (atomic)</td> | |
| 1915 | − </tr> | |
| 1916 | − <tr> | |
| 1917 | − <td valign="top" >“SRC_W”</td> | |
| 1918 | − <td valign="top" >RANGE</td> | |
| 1919 | − <td valign="top" >Min=0, Max=UINT_MAX</td> | |
| 1920 | − <td valign="top" >Plane</td> | |
| 1921 | − <td valign="top" >Scanout source width in 16.16 fixed point (atomic)</td> | |
| 1922 | − </tr> | |
| 1923 | − <tr> | |
| 1924 | − <td valign="top" >“SRC_H”</td> | |
| 1925 | − <td valign="top" >RANGE</td> | |
| 1926 | − <td valign="top" >Min=0, Max=UINT_MAX</td> | |
| 1927 | − <td valign="top" >Plane</td> | |
| 1928 | − <td valign="top" >Scanout source height in 16.16 fixed point (atomic)</td> | |
| 1929 | − </tr> | |
| 1930 | − <tr> | |
| 1931 | − <td valign="top" >“CRTC_X”</td> | |
| 1932 | − <td valign="top" >SIGNED_RANGE</td> | |
| 1933 | − <td valign="top" >Min=INT_MIN, Max=INT_MAX</td> | |
| 1934 | − <td valign="top" >Plane</td> | |
| 1935 | − <td valign="top" >Scanout CRTC (destination) x coordinate (atomic)</td> | |
| 1936 | − </tr> | |
| 1937 | − <tr> | |
| 1938 | − <td valign="top" >“CRTC_Y”</td> | |
| 1939 | − <td valign="top" >SIGNED_RANGE</td> | |
| 1940 | − <td valign="top" >Min=INT_MIN, Max=INT_MAX</td> | |
| 1941 | − <td valign="top" >Plane</td> | |
| 1942 | − <td valign="top" >Scanout CRTC (destination) y coordinate (atomic)</td> | |
| 1943 | − </tr> | |
| 1944 | − <tr> | |
| 1945 | − <td valign="top" >“CRTC_W”</td> | |
| 1946 | − <td valign="top" >RANGE</td> | |
| 1947 | − <td valign="top" >Min=0, Max=UINT_MAX</td> | |
| 1948 | − <td valign="top" >Plane</td> | |
| 1949 | − <td valign="top" >Scanout CRTC (destination) width (atomic)</td> | |
| 1950 | − </tr> | |
| 1951 | − <tr> | |
| 1952 | − <td valign="top" >“CRTC_H”</td> | |
| 1953 | − <td valign="top" >RANGE</td> | |
| 1954 | − <td valign="top" >Min=0, Max=UINT_MAX</td> | |
| 1955 | − <td valign="top" >Plane</td> | |
| 1956 | − <td valign="top" >Scanout CRTC (destination) height (atomic)</td> | |
| 1957 | − </tr> | |
| 1958 | − <tr> | |
| 1959 | − <td valign="top" >“FB_ID”</td> | |
| 1960 | − <td valign="top" >OBJECT</td> | |
| 1961 | − <td valign="top" >DRM_MODE_OBJECT_FB</td> | |
| 1962 | − <td valign="top" >Plane</td> | |
| 1963 | − <td valign="top" >Scanout framebuffer (atomic)</td> | |
| 1964 | − </tr> | |
| 1965 | − <tr> | |
| 1966 | − <td valign="top" >“CRTC_ID”</td> | |
| 1967 | − <td valign="top" >OBJECT</td> | |
| 1968 | − <td valign="top" >DRM_MODE_OBJECT_CRTC</td> | |
| 1969 | − <td valign="top" >Plane</td> | |
| 1970 | − <td valign="top" >CRTC that plane is attached to (atomic)</td> | |
| 1971 | − </tr> | |
| 1972 | − <tr> | |
| 1973 | − <td rowspan="2" valign="top" >DVI-I</td> | |
| 1974 | − <td valign="top" >“subconnector”</td> | |
| 1975 | − <td valign="top" >ENUM</td> | |
| 1976 | − <td valign="top" >{ “Unknown”, “DVI-D”, “DVI-A” }</td> | |
| 1977 | − <td valign="top" >Connector</td> | |
| 1978 | − <td valign="top" >TBD</td> | |
| 1979 | − </tr> | |
| 1980 | − <tr> | |
| 1981 | − <td valign="top" >“select subconnector”</td> | |
| 1982 | − <td valign="top" >ENUM</td> | |
| 1983 | − <td valign="top" >{ “Automatic”, “DVI-D”, “DVI-A” }</td> | |
| 1984 | − <td valign="top" >Connector</td> | |
| 1985 | − <td valign="top" >TBD</td> | |
| 1986 | − </tr> | |
| 1987 | − <tr> | |
| 1988 | − <td rowspan="13" valign="top" >TV</td> | |
| 1989 | − <td valign="top" >“subconnector”</td> | |
| 1990 | − <td valign="top" >ENUM</td> | |
| 1991 | − <td valign="top" >{ "Unknown", "Composite", "SVIDEO", "Component", "SCART" }</td> | |
| 1992 | − <td valign="top" >Connector</td> | |
| 1993 | − <td valign="top" >TBD</td> | |
| 1994 | − </tr> | |
| 1995 | − <tr> | |
| 1996 | − <td valign="top" >“select subconnector”</td> | |
| 1997 | − <td valign="top" >ENUM</td> | |
| 1998 | − <td valign="top" >{ "Automatic", "Composite", "SVIDEO", "Component", "SCART" }</td> | |
| 1999 | − <td valign="top" >Connector</td> | |
| 2000 | − <td valign="top" >TBD</td> | |
| 2001 | − </tr> | |
| 2002 | − <tr> | |
| 2003 | − <td valign="top" >“mode”</td> | |
| 2004 | − <td valign="top" >ENUM</td> | |
| 2005 | − <td valign="top" >{ "NTSC_M", "NTSC_J", "NTSC_443", "PAL_B" } etc.</td> | |
| 2006 | − <td valign="top" >Connector</td> | |
| 2007 | − <td valign="top" >TBD</td> | |
| 2008 | − </tr> | |
| 2009 | − <tr> | |
| 2010 | − <td valign="top" >“left margin”</td> | |
| 2011 | − <td valign="top" >RANGE</td> | |
| 2012 | − <td valign="top" >Min=0, Max=100</td> | |
| 2013 | − <td valign="top" >Connector</td> | |
| 2014 | − <td valign="top" >TBD</td> | |
| 2015 | − </tr> | |
| 2016 | − <tr> | |
| 2017 | − <td valign="top" >“right margin”</td> | |
| 2018 | − <td valign="top" >RANGE</td> | |
| 2019 | − <td valign="top" >Min=0, Max=100</td> | |
| 2020 | − <td valign="top" >Connector</td> | |
| 2021 | − <td valign="top" >TBD</td> | |
| 2022 | − </tr> | |
| 2023 | − <tr> | |
| 2024 | − <td valign="top" >“top margin”</td> | |
| 2025 | − <td valign="top" >RANGE</td> | |
| 2026 | − <td valign="top" >Min=0, Max=100</td> | |
| 2027 | − <td valign="top" >Connector</td> | |
| 2028 | − <td valign="top" >TBD</td> | |
| 2029 | − </tr> | |
| 2030 | − <tr> | |
| 2031 | − <td valign="top" >“bottom margin”</td> | |
| 2032 | − <td valign="top" >RANGE</td> | |
| 2033 | − <td valign="top" >Min=0, Max=100</td> | |
| 2034 | − <td valign="top" >Connector</td> | |
| 2035 | − <td valign="top" >TBD</td> | |
| 2036 | − </tr> | |
| 2037 | − <tr> | |
| 2038 | − <td valign="top" >“brightness”</td> | |
| 2039 | − <td valign="top" >RANGE</td> | |
| 2040 | − <td valign="top" >Min=0, Max=100</td> | |
| 2041 | − <td valign="top" >Connector</td> | |
| 2042 | − <td valign="top" >TBD</td> | |
| 2043 | − </tr> | |
| 2044 | − <tr> | |
| 2045 | − <td valign="top" >“contrast”</td> | |
| 2046 | − <td valign="top" >RANGE</td> | |
| 2047 | − <td valign="top" >Min=0, Max=100</td> | |
| 2048 | − <td valign="top" >Connector</td> | |
| 2049 | − <td valign="top" >TBD</td> | |
| 2050 | − </tr> | |
| 2051 | − <tr> | |
| 2052 | − <td valign="top" >“flicker reduction”</td> | |
| 2053 | − <td valign="top" >RANGE</td> | |
| 2054 | − <td valign="top" >Min=0, Max=100</td> | |
| 2055 | − <td valign="top" >Connector</td> | |
| 2056 | − <td valign="top" >TBD</td> | |
| 2057 | − </tr> | |
| 2058 | − <tr> | |
| 2059 | − <td valign="top" >“overscan”</td> | |
| 2060 | − <td valign="top" >RANGE</td> | |
| 2061 | − <td valign="top" >Min=0, Max=100</td> | |
| 2062 | − <td valign="top" >Connector</td> | |
| 2063 | − <td valign="top" >TBD</td> | |
| 2064 | − </tr> | |
| 2065 | − <tr> | |
| 2066 | − <td valign="top" >“saturation”</td> | |
| 2067 | − <td valign="top" >RANGE</td> | |
| 2068 | − <td valign="top" >Min=0, Max=100</td> | |
| 2069 | − <td valign="top" >Connector</td> | |
| 2070 | − <td valign="top" >TBD</td> | |
| 2071 | − </tr> | |
| 2072 | − <tr> | |
| 2073 | − <td valign="top" >“hue”</td> | |
| 2074 | − <td valign="top" >RANGE</td> | |
| 2075 | − <td valign="top" >Min=0, Max=100</td> | |
| 2076 | − <td valign="top" >Connector</td> | |
| 2077 | − <td valign="top" >TBD</td> | |
| 2078 | − </tr> | |
| 2079 | − <tr> | |
| 2080 | − <td rowspan="2" valign="top" >Virtual GPU</td> | |
| 2081 | − <td valign="top" >“suggested X”</td> | |
| 2082 | − <td valign="top" >RANGE</td> | |
| 2083 | − <td valign="top" >Min=0, Max=0xffffffff</td> | |
| 2084 | − <td valign="top" >Connector</td> | |
| 2085 | − <td valign="top" >property to suggest an X offset for a connector</td> | |
| 2086 | − </tr> | |
| 2087 | − <tr> | |
| 2088 | − <td valign="top" >“suggested Y”</td> | |
| 2089 | − <td valign="top" >RANGE</td> | |
| 2090 | − <td valign="top" >Min=0, Max=0xffffffff</td> | |
| 2091 | − <td valign="top" >Connector</td> | |
| 2092 | − <td valign="top" >property to suggest an Y offset for a connector</td> | |
| 2093 | − </tr> | |
| 2094 | − <tr> | |
| 2095 | − <td rowspan="7" valign="top" >Optional</td> | |
| 2096 | − <td valign="top" >"aspect ratio"</td> | |
| 2097 | − <td valign="top" >ENUM</td> | |
| 2098 | − <td valign="top" >{ "None", "4:3", "16:9" }</td> | |
| 2099 | − <td valign="top" >Connector</td> | |
| 2100 | − <td valign="top" >TDB</td> | |
| 2101 | − </tr> | |
| 2102 | − <tr> | |
| 2103 | − <td valign="top" >“dirty”</td> | |
| 2104 | − <td valign="top" >ENUM | IMMUTABLE</td> | |
| 2105 | − <td valign="top" >{ "Off", "On", "Annotate" }</td> | |
| 2106 | − <td valign="top" >Connector</td> | |
| 2107 | − <td valign="top" >TBD</td> | |
| 2108 | − </tr> | |
| 2109 | − <tr> | |
| 2110 | − <td valign="top" >“DEGAMMA_LUT”</td> | |
| 2111 | − <td valign="top" >BLOB</td> | |
| 2112 | − <td valign="top" >0</td> | |
| 2113 | − <td valign="top" >CRTC</td> | |
| 2114 | − <td valign="top" >DRM property to set the degamma lookup table | |
| 2115 | − (LUT) mapping pixel data from the framebuffer before it is | |
| 2116 | − given to the transformation matrix. The data is an interpreted | |
| 2117 | − as an array of struct drm_color_lut elements. Hardware might | |
| 2118 | − choose not to use the full precision of the LUT elements nor | |
| 2119 | − use all the elements of the LUT (for example the hardware | |
| 2120 | − might choose to interpolate between LUT[0] and LUT[4]). </td> | |
| 2121 | − </tr> | |
| 2122 | − <tr> | |
| 2123 | − <td valign="top" >“DEGAMMA_LUT_SIZE”</td> | |
| 2124 | − <td valign="top" >RANGE | IMMUTABLE</td> | |
| 2125 | − <td valign="top" >Min=0, Max=UINT_MAX</td> | |
| 2126 | − <td valign="top" >CRTC</td> | |
| 2127 | − <td valign="top" >DRM property to gives the size of the lookup | |
| 2128 | − table to be set on the DEGAMMA_LUT property (the size depends | |
| 2129 | − on the underlying hardware).</td> | |
| 2130 | − </tr> | |
| 2131 | − <tr> | |
| 2132 | − <td valign="top" >“CTM”</td> | |
| 2133 | − <td valign="top" >BLOB</td> | |
| 2134 | − <td valign="top" >0</td> | |
| 2135 | − <td valign="top" >CRTC</td> | |
| 2136 | − <td valign="top" >DRM property to set the current | |
| 2137 | − transformation matrix (CTM) apply to pixel data after the | |
| 2138 | − lookup through the degamma LUT and before the lookup through | |
| 2139 | − the gamma LUT. The data is an interpreted as a struct | |
| 2140 | − drm_color_ctm.</td> | |
| 2141 | − </tr> | |
| 2142 | − <tr> | |
| 2143 | − <td valign="top" >“GAMMA_LUT”</td> | |
| 2144 | − <td valign="top" >BLOB</td> | |
| 2145 | − <td valign="top" >0</td> | |
| 2146 | − <td valign="top" >CRTC</td> | |
| 2147 | − <td valign="top" >DRM property to set the gamma lookup table | |
| 2148 | − (LUT) mapping pixel data after to the transformation matrix to | |
| 2149 | − data sent to the connector. The data is an interpreted as an | |
| 2150 | − array of struct drm_color_lut elements. Hardware might choose | |
| 2151 | − not to use the full precision of the LUT elements nor use all | |
| 2152 | − the elements of the LUT (for example the hardware might choose | |
| 2153 | − to interpolate between LUT[0] and LUT[4]).</td> | |
| 2154 | − </tr> | |
| 2155 | − <tr> | |
| 2156 | − <td valign="top" >“GAMMA_LUT_SIZE”</td> | |
| 2157 | − <td valign="top" >RANGE | IMMUTABLE</td> | |
| 2158 | − <td valign="top" >Min=0, Max=UINT_MAX</td> | |
| 2159 | − <td valign="top" >CRTC</td> | |
| 2160 | − <td valign="top" >DRM property to gives the size of the lookup | |
| 2161 | − table to be set on the GAMMA_LUT property (the size depends on | |
| 2162 | − the underlying hardware).</td> | |
| 2163 | − </tr> | |
| 2164 | − <tr> | |
| 2165 | − <td rowspan="20" valign="top" >i915</td> | |
| 2166 | − <td rowspan="2" valign="top" >Generic</td> | |
| 2167 | − <td valign="top" >"Broadcast RGB"</td> | |
| 2168 | − <td valign="top" >ENUM</td> | |
| 2169 | − <td valign="top" >{ "Automatic", "Full", "Limited 16:235" }</td> | |
| 2170 | − <td valign="top" >Connector</td> | |
| 2171 | − <td valign="top" >When this property is set to Limited 16:235 | |
| 2172 | − and CTM is set, the hardware will be programmed with the | |
| 2173 | − result of the multiplication of CTM by the limited range | |
| 2174 | − matrix to ensure the pixels normaly in the range 0..1.0 are | |
| 2175 | − remapped to the range 16/255..235/255.</td> | |
| 2176 | − </tr> | |
| 2177 | − <tr> | |
| 2178 | − <td valign="top" >“audio”</td> | |
| 2179 | − <td valign="top" >ENUM</td> | |
| 2180 | − <td valign="top" >{ "force-dvi", "off", "auto", "on" }</td> | |
| 2181 | − <td valign="top" >Connector</td> | |
| 2182 | − <td valign="top" >TBD</td> | |
| 2183 | − </tr> | |
| 2184 | − <tr> | |
| 2185 | − <td rowspan="17" valign="top" >SDVO-TV</td> | |
| 2186 | − <td valign="top" >“mode”</td> | |
| 2187 | − <td valign="top" >ENUM</td> | |
| 2188 | − <td valign="top" >{ "NTSC_M", "NTSC_J", "NTSC_443", "PAL_B" } etc.</td> | |
| 2189 | − <td valign="top" >Connector</td> | |
| 2190 | − <td valign="top" >TBD</td> | |
| 2191 | − </tr> | |
| 2192 | − <tr> | |
| 2193 | − <td valign="top" >"left_margin"</td> | |
| 2194 | − <td valign="top" >RANGE</td> | |
| 2195 | − <td valign="top" >Min=0, Max= SDVO dependent</td> | |
| 2196 | − <td valign="top" >Connector</td> | |
| 2197 | − <td valign="top" >TBD</td> | |
| 2198 | − </tr> | |
| 2199 | − <tr> | |
| 2200 | − <td valign="top" >"right_margin"</td> | |
| 2201 | − <td valign="top" >RANGE</td> | |
| 2202 | − <td valign="top" >Min=0, Max= SDVO dependent</td> | |
| 2203 | − <td valign="top" >Connector</td> | |
| 2204 | − <td valign="top" >TBD</td> | |
| 2205 | − </tr> | |
| 2206 | − <tr> | |
| 2207 | − <td valign="top" >"top_margin"</td> | |
| 2208 | − <td valign="top" >RANGE</td> | |
| 2209 | − <td valign="top" >Min=0, Max= SDVO dependent</td> | |
| 2210 | − <td valign="top" >Connector</td> | |
| 2211 | − <td valign="top" >TBD</td> | |
| 2212 | − </tr> | |
| 2213 | − <tr> | |
| 2214 | − <td valign="top" >"bottom_margin"</td> | |
| 2215 | − <td valign="top" >RANGE</td> | |
| 2216 | − <td valign="top" >Min=0, Max= SDVO dependent</td> | |
| 2217 | − <td valign="top" >Connector</td> | |
| 2218 | − <td valign="top" >TBD</td> | |
| 2219 | − </tr> | |
| 2220 | − <tr> | |
| 2221 | − <td valign="top" >“hpos”</td> | |
| 2222 | − <td valign="top" >RANGE</td> | |
| 2223 | − <td valign="top" >Min=0, Max= SDVO dependent</td> | |
| 2224 | − <td valign="top" >Connector</td> | |
| 2225 | − <td valign="top" >TBD</td> | |
| 2226 | − </tr> | |
| 2227 | − <tr> | |
| 2228 | − <td valign="top" >“vpos”</td> | |
| 2229 | − <td valign="top" >RANGE</td> | |
| 2230 | − <td valign="top" >Min=0, Max= SDVO dependent</td> | |
| 2231 | − <td valign="top" >Connector</td> | |
| 2232 | − <td valign="top" >TBD</td> | |
| 2233 | − </tr> | |
| 2234 | − <tr> | |
| 2235 | − <td valign="top" >“contrast”</td> | |
| 2236 | − <td valign="top" >RANGE</td> | |
| 2237 | − <td valign="top" >Min=0, Max= SDVO dependent</td> | |
| 2238 | − <td valign="top" >Connector</td> | |
| 2239 | − <td valign="top" >TBD</td> | |
| 2240 | − </tr> | |
| 2241 | − <tr> | |
| 2242 | − <td valign="top" >“saturation”</td> | |
| 2243 | − <td valign="top" >RANGE</td> | |
| 2244 | − <td valign="top" >Min=0, Max= SDVO dependent</td> | |
| 2245 | − <td valign="top" >Connector</td> | |
| 2246 | − <td valign="top" >TBD</td> | |
| 2247 | − </tr> | |
| 2248 | − <tr> | |
| 2249 | − <td valign="top" >“hue”</td> | |
| 2250 | − <td valign="top" >RANGE</td> | |
| 2251 | − <td valign="top" >Min=0, Max= SDVO dependent</td> | |
| 2252 | − <td valign="top" >Connector</td> | |
| 2253 | − <td valign="top" >TBD</td> | |
| 2254 | − </tr> | |
| 2255 | − <tr> | |
| 2256 | − <td valign="top" >“sharpness”</td> | |
| 2257 | − <td valign="top" >RANGE</td> | |
| 2258 | − <td valign="top" >Min=0, Max= SDVO dependent</td> | |
| 2259 | − <td valign="top" >Connector</td> | |
| 2260 | − <td valign="top" >TBD</td> | |
| 2261 | − </tr> | |
| 2262 | − <tr> | |
| 2263 | − <td valign="top" >“flicker_filter”</td> | |
| 2264 | − <td valign="top" >RANGE</td> | |
| 2265 | − <td valign="top" >Min=0, Max= SDVO dependent</td> | |
| 2266 | − <td valign="top" >Connector</td> | |
| 2267 | − <td valign="top" >TBD</td> | |
| 2268 | − </tr> | |
| 2269 | − <tr> | |
| 2270 | − <td valign="top" >“flicker_filter_adaptive”</td> | |
| 2271 | − <td valign="top" >RANGE</td> | |
| 2272 | − <td valign="top" >Min=0, Max= SDVO dependent</td> | |
| 2273 | − <td valign="top" >Connector</td> | |
| 2274 | − <td valign="top" >TBD</td> | |
| 2275 | − </tr> | |
| 2276 | − <tr> | |
| 2277 | − <td valign="top" >“flicker_filter_2d”</td> | |
| 2278 | − <td valign="top" >RANGE</td> | |
| 2279 | − <td valign="top" >Min=0, Max= SDVO dependent</td> | |
| 2280 | − <td valign="top" >Connector</td> | |
| 2281 | − <td valign="top" >TBD</td> | |
| 2282 | − </tr> | |
| 2283 | − <tr> | |
| 2284 | − <td valign="top" >“tv_chroma_filter”</td> | |
| 2285 | − <td valign="top" >RANGE</td> | |
| 2286 | − <td valign="top" >Min=0, Max= SDVO dependent</td> | |
| 2287 | − <td valign="top" >Connector</td> | |
| 2288 | − <td valign="top" >TBD</td> | |
| 2289 | − </tr> | |
| 2290 | − <tr> | |
| 2291 | − <td valign="top" >“tv_luma_filter”</td> | |
| 2292 | − <td valign="top" >RANGE</td> | |
| 2293 | − <td valign="top" >Min=0, Max= SDVO dependent</td> | |
| 2294 | − <td valign="top" >Connector</td> | |
| 2295 | − <td valign="top" >TBD</td> | |
| 2296 | − </tr> | |
| 2297 | − <tr> | |
| 2298 | − <td valign="top" >“dot_crawl”</td> | |
| 2299 | − <td valign="top" >RANGE</td> | |
| 2300 | − <td valign="top" >Min=0, Max=1</td> | |
| 2301 | − <td valign="top" >Connector</td> | |
| 2302 | − <td valign="top" >TBD</td> | |
| 2303 | − </tr> | |
| 2304 | − <tr> | |
| 2305 | − <td valign="top" >SDVO-TV/LVDS</td> | |
| 2306 | − <td valign="top" >“brightness”</td> | |
| 2307 | − <td valign="top" >RANGE</td> | |
| 2308 | − <td valign="top" >Min=0, Max= SDVO dependent</td> | |
| 2309 | − <td valign="top" >Connector</td> | |
| 2310 | − <td valign="top" >TBD</td> | |
| 2311 | − </tr> | |
| 2312 | − <tr> | |
| 2313 | − <td rowspan="2" valign="top" >CDV gma-500</td> | |
| 2314 | − <td rowspan="2" valign="top" >Generic</td> | |
| 2315 | − <td valign="top" >"Broadcast RGB"</td> | |
| 2316 | − <td valign="top" >ENUM</td> | |
| 2317 | − <td valign="top" >{ “Full”, “Limited 16:235” }</td> | |
| 2318 | − <td valign="top" >Connector</td> | |
| 2319 | − <td valign="top" >TBD</td> | |
| 2320 | − </tr> | |
| 2321 | − <tr> | |
| 2322 | − <td valign="top" >"Broadcast RGB"</td> | |
| 2323 | − <td valign="top" >ENUM</td> | |
| 2324 | − <td valign="top" >{ “off”, “auto”, “on” }</td> | |
| 2325 | − <td valign="top" >Connector</td> | |
| 2326 | − <td valign="top" >TBD</td> | |
| 2327 | − </tr> | |
| 2328 | − <tr> | |
| 2329 | − <td rowspan="19" valign="top" >Poulsbo</td> | |
| 2330 | − <td rowspan="1" valign="top" >Generic</td> | |
| 2331 | − <td valign="top" >“backlight”</td> | |
| 2332 | − <td valign="top" >RANGE</td> | |
| 2333 | − <td valign="top" >Min=0, Max=100</td> | |
| 2334 | − <td valign="top" >Connector</td> | |
| 2335 | − <td valign="top" >TBD</td> | |
| 2336 | − </tr> | |
| 2337 | − <tr> | |
| 2338 | − <td rowspan="17" valign="top" >SDVO-TV</td> | |
| 2339 | − <td valign="top" >“mode”</td> | |
| 2340 | − <td valign="top" >ENUM</td> | |
| 2341 | − <td valign="top" >{ "NTSC_M", "NTSC_J", "NTSC_443", "PAL_B" } etc.</td> | |
| 2342 | − <td valign="top" >Connector</td> | |
| 2343 | − <td valign="top" >TBD</td> | |
| 2344 | − </tr> | |
| 2345 | − <tr> | |
| 2346 | − <td valign="top" >"left_margin"</td> | |
| 2347 | − <td valign="top" >RANGE</td> | |
| 2348 | − <td valign="top" >Min=0, Max= SDVO dependent</td> | |
| 2349 | − <td valign="top" >Connector</td> | |
| 2350 | − <td valign="top" >TBD</td> | |
| 2351 | − </tr> | |
| 2352 | − <tr> | |
| 2353 | − <td valign="top" >"right_margin"</td> | |
| 2354 | − <td valign="top" >RANGE</td> | |
| 2355 | − <td valign="top" >Min=0, Max= SDVO dependent</td> | |
| 2356 | − <td valign="top" >Connector</td> | |
| 2357 | − <td valign="top" >TBD</td> | |
| 2358 | − </tr> | |
| 2359 | − <tr> | |
| 2360 | − <td valign="top" >"top_margin"</td> | |
| 2361 | − <td valign="top" >RANGE</td> | |
| 2362 | − <td valign="top" >Min=0, Max= SDVO dependent</td> | |
| 2363 | − <td valign="top" >Connector</td> | |
| 2364 | − <td valign="top" >TBD</td> | |
| 2365 | − </tr> | |
| 2366 | − <tr> | |
| 2367 | − <td valign="top" >"bottom_margin"</td> | |
| 2368 | − <td valign="top" >RANGE</td> | |
| 2369 | − <td valign="top" >Min=0, Max= SDVO dependent</td> | |
| 2370 | − <td valign="top" >Connector</td> | |
| 2371 | − <td valign="top" >TBD</td> | |
| 2372 | − </tr> | |
| 2373 | − <tr> | |
| 2374 | − <td valign="top" >“hpos”</td> | |
| 2375 | − <td valign="top" >RANGE</td> | |
| 2376 | − <td valign="top" >Min=0, Max= SDVO dependent</td> | |
| 2377 | − <td valign="top" >Connector</td> | |
| 2378 | − <td valign="top" >TBD</td> | |
| 2379 | − </tr> | |
| 2380 | − <tr> | |
| 2381 | − <td valign="top" >“vpos”</td> | |
| 2382 | − <td valign="top" >RANGE</td> | |
| 2383 | − <td valign="top" >Min=0, Max= SDVO dependent</td> | |
| 2384 | − <td valign="top" >Connector</td> | |
| 2385 | − <td valign="top" >TBD</td> | |
| 2386 | − </tr> | |
| 2387 | − <tr> | |
| 2388 | − <td valign="top" >“contrast”</td> | |
| 2389 | − <td valign="top" >RANGE</td> | |
| 2390 | − <td valign="top" >Min=0, Max= SDVO dependent</td> | |
| 2391 | − <td valign="top" >Connector</td> | |
| 2392 | − <td valign="top" >TBD</td> | |
| 2393 | − </tr> | |
| 2394 | − <tr> | |
| 2395 | − <td valign="top" >“saturation”</td> | |
| 2396 | − <td valign="top" >RANGE</td> | |
| 2397 | − <td valign="top" >Min=0, Max= SDVO dependent</td> | |
| 2398 | − <td valign="top" >Connector</td> | |
| 2399 | − <td valign="top" >TBD</td> | |
| 2400 | − </tr> | |
| 2401 | − <tr> | |
| 2402 | − <td valign="top" >“hue”</td> | |
| 2403 | − <td valign="top" >RANGE</td> | |
| 2404 | − <td valign="top" >Min=0, Max= SDVO dependent</td> | |
| 2405 | − <td valign="top" >Connector</td> | |
| 2406 | − <td valign="top" >TBD</td> | |
| 2407 | − </tr> | |
| 2408 | − <tr> | |
| 2409 | − <td valign="top" >“sharpness”</td> | |
| 2410 | − <td valign="top" >RANGE</td> | |
| 2411 | − <td valign="top" >Min=0, Max= SDVO dependent</td> | |
| 2412 | − <td valign="top" >Connector</td> | |
| 2413 | − <td valign="top" >TBD</td> | |
| 2414 | − </tr> | |
| 2415 | − <tr> | |
| 2416 | − <td valign="top" >“flicker_filter”</td> | |
| 2417 | − <td valign="top" >RANGE</td> | |
| 2418 | − <td valign="top" >Min=0, Max= SDVO dependent</td> | |
| 2419 | − <td valign="top" >Connector</td> | |
| 2420 | − <td valign="top" >TBD</td> | |
| 2421 | − </tr> | |
| 2422 | − <tr> | |
| 2423 | − <td valign="top" >“flicker_filter_adaptive”</td> | |
| 2424 | − <td valign="top" >RANGE</td> | |
| 2425 | − <td valign="top" >Min=0, Max= SDVO dependent</td> | |
| 2426 | − <td valign="top" >Connector</td> | |
| 2427 | − <td valign="top" >TBD</td> | |
| 2428 | − </tr> | |
| 2429 | − <tr> | |
| 2430 | − <td valign="top" >“flicker_filter_2d”</td> | |
| 2431 | − <td valign="top" >RANGE</td> | |
| 2432 | − <td valign="top" >Min=0, Max= SDVO dependent</td> | |
| 2433 | − <td valign="top" >Connector</td> | |
| 2434 | − <td valign="top" >TBD</td> | |
| 2435 | − </tr> | |
| 2436 | − <tr> | |
| 2437 | − <td valign="top" >“tv_chroma_filter”</td> | |
| 2438 | − <td valign="top" >RANGE</td> | |
| 2439 | − <td valign="top" >Min=0, Max= SDVO dependent</td> | |
| 2440 | − <td valign="top" >Connector</td> | |
| 2441 | − <td valign="top" >TBD</td> | |
| 2442 | − </tr> | |
| 2443 | − <tr> | |
| 2444 | − <td valign="top" >“tv_luma_filter”</td> | |
| 2445 | − <td valign="top" >RANGE</td> | |
| 2446 | − <td valign="top" >Min=0, Max= SDVO dependent</td> | |
| 2447 | − <td valign="top" >Connector</td> | |
| 2448 | − <td valign="top" >TBD</td> | |
| 2449 | − </tr> | |
| 2450 | − <tr> | |
| 2451 | − <td valign="top" >“dot_crawl”</td> | |
| 2452 | − <td valign="top" >RANGE</td> | |
| 2453 | − <td valign="top" >Min=0, Max=1</td> | |
| 2454 | − <td valign="top" >Connector</td> | |
| 2455 | − <td valign="top" >TBD</td> | |
| 2456 | − </tr> | |
| 2457 | − <tr> | |
| 2458 | − <td valign="top" >SDVO-TV/LVDS</td> | |
| 2459 | − <td valign="top" >“brightness”</td> | |
| 2460 | − <td valign="top" >RANGE</td> | |
| 2461 | − <td valign="top" >Min=0, Max= SDVO dependent</td> | |
| 2462 | − <td valign="top" >Connector</td> | |
| 2463 | − <td valign="top" >TBD</td> | |
| 2464 | − </tr> | |
| 2465 | − <tr> | |
| 2466 | − <td rowspan="11" valign="top" >armada</td> | |
| 2467 | − <td rowspan="2" valign="top" >CRTC</td> | |
| 2468 | − <td valign="top" >"CSC_YUV"</td> | |
| 2469 | − <td valign="top" >ENUM</td> | |
| 2470 | − <td valign="top" >{ "Auto" , "CCIR601", "CCIR709" }</td> | |
| 2471 | − <td valign="top" >CRTC</td> | |
| 2472 | − <td valign="top" >TBD</td> | |
| 2473 | − </tr> | |
| 2474 | − <tr> | |
| 2475 | − <td valign="top" >"CSC_RGB"</td> | |
| 2476 | − <td valign="top" >ENUM</td> | |
| 2477 | − <td valign="top" >{ "Auto", "Computer system", "Studio" }</td> | |
| 2478 | − <td valign="top" >CRTC</td> | |
| 2479 | − <td valign="top" >TBD</td> | |
| 2480 | − </tr> | |
| 2481 | − <tr> | |
| 2482 | − <td rowspan="9" valign="top" >Overlay</td> | |
| 2483 | − <td valign="top" >"colorkey"</td> | |
| 2484 | − <td valign="top" >RANGE</td> | |
| 2485 | − <td valign="top" >Min=0, Max=0xffffff</td> | |
| 2486 | − <td valign="top" >Plane</td> | |
| 2487 | − <td valign="top" >TBD</td> | |
| 2488 | − </tr> | |
| 2489 | − <tr> | |
| 2490 | − <td valign="top" >"colorkey_min"</td> | |
| 2491 | − <td valign="top" >RANGE</td> | |
| 2492 | − <td valign="top" >Min=0, Max=0xffffff</td> | |
| 2493 | − <td valign="top" >Plane</td> | |
| 2494 | − <td valign="top" >TBD</td> | |
| 2495 | − </tr> | |
| 2496 | − <tr> | |
| 2497 | − <td valign="top" >"colorkey_max"</td> | |
| 2498 | − <td valign="top" >RANGE</td> | |
| 2499 | − <td valign="top" >Min=0, Max=0xffffff</td> | |
| 2500 | − <td valign="top" >Plane</td> | |
| 2501 | − <td valign="top" >TBD</td> | |
| 2502 | − </tr> | |
| 2503 | − <tr> | |
| 2504 | − <td valign="top" >"colorkey_val"</td> | |
| 2505 | − <td valign="top" >RANGE</td> | |
| 2506 | − <td valign="top" >Min=0, Max=0xffffff</td> | |
| 2507 | − <td valign="top" >Plane</td> | |
| 2508 | − <td valign="top" >TBD</td> | |
| 2509 | − </tr> | |
| 2510 | − <tr> | |
| 2511 | − <td valign="top" >"colorkey_alpha"</td> | |
| 2512 | − <td valign="top" >RANGE</td> | |
| 2513 | − <td valign="top" >Min=0, Max=0xffffff</td> | |
| 2514 | − <td valign="top" >Plane</td> | |
| 2515 | − <td valign="top" >TBD</td> | |
| 2516 | − </tr> | |
| 2517 | − <tr> | |
| 2518 | − <td valign="top" >"colorkey_mode"</td> | |
| 2519 | − <td valign="top" >ENUM</td> | |
| 2520 | − <td valign="top" >{ "disabled", "Y component", "U component" | |
| 2521 | − , "V component", "RGB", “R component", "G component", "B component" }</td> | |
| 2522 | − <td valign="top" >Plane</td> | |
| 2523 | − <td valign="top" >TBD</td> | |
| 2524 | − </tr> | |
| 2525 | − <tr> | |
| 2526 | − <td valign="top" >"brightness"</td> | |
| 2527 | − <td valign="top" >RANGE</td> | |
| 2528 | − <td valign="top" >Min=0, Max=256 + 255</td> | |
| 2529 | − <td valign="top" >Plane</td> | |
| 2530 | − <td valign="top" >TBD</td> | |
| 2531 | − </tr> | |
| 2532 | − <tr> | |
| 2533 | − <td valign="top" >"contrast"</td> | |
| 2534 | − <td valign="top" >RANGE</td> | |
| 2535 | − <td valign="top" >Min=0, Max=0x7fff</td> | |
| 2536 | − <td valign="top" >Plane</td> | |
| 2537 | − <td valign="top" >TBD</td> | |
| 2538 | − </tr> | |
| 2539 | − <tr> | |
| 2540 | − <td valign="top" >"saturation"</td> | |
| 2541 | − <td valign="top" >RANGE</td> | |
| 2542 | − <td valign="top" >Min=0, Max=0x7fff</td> | |
| 2543 | − <td valign="top" >Plane</td> | |
| 2544 | − <td valign="top" >TBD</td> | |
| 2545 | − </tr> | |
| 2546 | − <tr> | |
| 2547 | − <td rowspan="2" valign="top" >exynos</td> | |
| 2548 | − <td valign="top" >CRTC</td> | |
| 2549 | − <td valign="top" >“mode”</td> | |
| 2550 | − <td valign="top" >ENUM</td> | |
| 2551 | − <td valign="top" >{ "normal", "blank" }</td> | |
| 2552 | − <td valign="top" >CRTC</td> | |
| 2553 | − <td valign="top" >TBD</td> | |
| 2554 | − </tr> | |
| 2555 | − <tr> | |
| 2556 | − <td valign="top" >Overlay</td> | |
| 2557 | − <td valign="top" >“zpos”</td> | |
| 2558 | − <td valign="top" >RANGE</td> | |
| 2559 | − <td valign="top" >Min=0, Max=MAX_PLANE-1</td> | |
| 2560 | − <td valign="top" >Plane</td> | |
| 2561 | − <td valign="top" >TBD</td> | |
| 2562 | − </tr> | |
| 2563 | − <tr> | |
| 2564 | − <td rowspan="2" valign="top" >i2c/ch7006_drv</td> | |
| 2565 | − <td valign="top" >Generic</td> | |
| 2566 | − <td valign="top" >“scale”</td> | |
| 2567 | − <td valign="top" >RANGE</td> | |
| 2568 | − <td valign="top" >Min=0, Max=2</td> | |
| 2569 | − <td valign="top" >Connector</td> | |
| 2570 | − <td valign="top" >TBD</td> | |
| 2571 | − </tr> | |
| 2572 | − <tr> | |
| 2573 | − <td rowspan="1" valign="top" >TV</td> | |
| 2574 | − <td valign="top" >“mode”</td> | |
| 2575 | − <td valign="top" >ENUM</td> | |
| 2576 | − <td valign="top" >{ "PAL", "PAL-M","PAL-N"}, ”PAL-Nc" | |
| 2577 | − , "PAL-60", "NTSC-M", "NTSC-J" }</td> | |
| 2578 | − <td valign="top" >Connector</td> | |
| 2579 | − <td valign="top" >TBD</td> | |
| 2580 | − </tr> | |
| 2581 | − <tr> | |
| 2582 | − <td rowspan="15" valign="top" >nouveau</td> | |
| 2583 | − <td rowspan="6" valign="top" >NV10 Overlay</td> | |
| 2584 | − <td valign="top" >"colorkey"</td> | |
| 2585 | − <td valign="top" >RANGE</td> | |
| 2586 | − <td valign="top" >Min=0, Max=0x01ffffff</td> | |
| 2587 | − <td valign="top" >Plane</td> | |
| 2588 | − <td valign="top" >TBD</td> | |
| 2589 | − </tr> | |
| 2590 | − <tr> | |
| 2591 | − <td valign="top" >“contrast”</td> | |
| 2592 | − <td valign="top" >RANGE</td> | |
| 2593 | − <td valign="top" >Min=0, Max=8192-1</td> | |
| 2594 | − <td valign="top" >Plane</td> | |
| 2595 | − <td valign="top" >TBD</td> | |
| 2596 | − </tr> | |
| 2597 | − <tr> | |
| 2598 | − <td valign="top" >“brightness”</td> | |
| 2599 | − <td valign="top" >RANGE</td> | |
| 2600 | − <td valign="top" >Min=0, Max=1024</td> | |
| 2601 | − <td valign="top" >Plane</td> | |
| 2602 | − <td valign="top" >TBD</td> | |
| 2603 | − </tr> | |
| 2604 | − <tr> | |
| 2605 | − <td valign="top" >“hue”</td> | |
| 2606 | − <td valign="top" >RANGE</td> | |
| 2607 | − <td valign="top" >Min=0, Max=359</td> | |
| 2608 | − <td valign="top" >Plane</td> | |
| 2609 | − <td valign="top" >TBD</td> | |
| 2610 | − </tr> | |
| 2611 | − <tr> | |
| 2612 | − <td valign="top" >“saturation”</td> | |
| 2613 | − <td valign="top" >RANGE</td> | |
| 2614 | − <td valign="top" >Min=0, Max=8192-1</td> | |
| 2615 | − <td valign="top" >Plane</td> | |
| 2616 | − <td valign="top" >TBD</td> | |
| 2617 | − </tr> | |
| 2618 | − <tr> | |
| 2619 | − <td valign="top" >“iturbt_709”</td> | |
| 2620 | − <td valign="top" >RANGE</td> | |
| 2621 | − <td valign="top" >Min=0, Max=1</td> | |
| 2622 | − <td valign="top" >Plane</td> | |
| 2623 | − <td valign="top" >TBD</td> | |
| 2624 | − </tr> | |
| 2625 | − <tr> | |
| 2626 | − <td rowspan="2" valign="top" >Nv04 Overlay</td> | |
| 2627 | − <td valign="top" >“colorkey”</td> | |
| 2628 | − <td valign="top" >RANGE</td> | |
| 2629 | − <td valign="top" >Min=0, Max=0x01ffffff</td> | |
| 2630 | − <td valign="top" >Plane</td> | |
| 2631 | − <td valign="top" >TBD</td> | |
| 2632 | − </tr> | |
| 2633 | − <tr> | |
| 2634 | − <td valign="top" >“brightness”</td> | |
| 2635 | − <td valign="top" >RANGE</td> | |
| 2636 | − <td valign="top" >Min=0, Max=1024</td> | |
| 2637 | − <td valign="top" >Plane</td> | |
| 2638 | − <td valign="top" >TBD</td> | |
| 2639 | − </tr> | |
| 2640 | − <tr> | |
| 2641 | − <td rowspan="7" valign="top" >Display</td> | |
| 2642 | − <td valign="top" >“dithering mode”</td> | |
| 2643 | − <td valign="top" >ENUM</td> | |
| 2644 | − <td valign="top" >{ "auto", "off", "on" }</td> | |
| 2645 | − <td valign="top" >Connector</td> | |
| 2646 | − <td valign="top" >TBD</td> | |
| 2647 | − </tr> | |
| 2648 | − <tr> | |
| 2649 | − <td valign="top" >“dithering depth”</td> | |
| 2650 | − <td valign="top" >ENUM</td> | |
| 2651 | − <td valign="top" >{ "auto", "off", "on", "static 2x2", "dynamic 2x2", "temporal" }</td> | |
| 2652 | − <td valign="top" >Connector</td> | |
| 2653 | − <td valign="top" >TBD</td> | |
| 2654 | − </tr> | |
| 2655 | − <tr> | |
| 2656 | − <td valign="top" >“underscan”</td> | |
| 2657 | − <td valign="top" >ENUM</td> | |
| 2658 | − <td valign="top" >{ "auto", "6 bpc", "8 bpc" }</td> | |
| 2659 | − <td valign="top" >Connector</td> | |
| 2660 | − <td valign="top" >TBD</td> | |
| 2661 | − </tr> | |
| 2662 | − <tr> | |
| 2663 | − <td valign="top" >“underscan hborder”</td> | |
| 2664 | − <td valign="top" >RANGE</td> | |
| 2665 | − <td valign="top" >Min=0, Max=128</td> | |
| 2666 | − <td valign="top" >Connector</td> | |
| 2667 | − <td valign="top" >TBD</td> | |
| 2668 | − </tr> | |
| 2669 | − <tr> | |
| 2670 | − <td valign="top" >“underscan vborder”</td> | |
| 2671 | − <td valign="top" >RANGE</td> | |
| 2672 | − <td valign="top" >Min=0, Max=128</td> | |
| 2673 | − <td valign="top" >Connector</td> | |
| 2674 | − <td valign="top" >TBD</td> | |
| 2675 | − </tr> | |
| 2676 | − <tr> | |
| 2677 | − <td valign="top" >“vibrant hue”</td> | |
| 2678 | − <td valign="top" >RANGE</td> | |
| 2679 | − <td valign="top" >Min=0, Max=180</td> | |
| 2680 | − <td valign="top" >Connector</td> | |
| 2681 | − <td valign="top" >TBD</td> | |
| 2682 | − </tr> | |
| 2683 | − <tr> | |
| 2684 | − <td valign="top" >“color vibrance”</td> | |
| 2685 | − <td valign="top" >RANGE</td> | |
| 2686 | − <td valign="top" >Min=0, Max=200</td> | |
| 2687 | − <td valign="top" >Connector</td> | |
| 2688 | − <td valign="top" >TBD</td> | |
| 2689 | − </tr> | |
| 2690 | − <tr> | |
| 2691 | − <td valign="top" >omap</td> | |
| 2692 | − <td valign="top" >Generic</td> | |
| 2693 | − <td valign="top" >“zorder”</td> | |
| 2694 | − <td valign="top" >RANGE</td> | |
| 2695 | − <td valign="top" >Min=0, Max=3</td> | |
| 2696 | − <td valign="top" >CRTC, Plane</td> | |
| 2697 | − <td valign="top" >TBD</td> | |
| 2698 | − </tr> | |
| 2699 | − <tr> | |
| 2700 | − <td valign="top" >qxl</td> | |
| 2701 | − <td valign="top" >Generic</td> | |
| 2702 | − <td valign="top" >“hotplug_mode_update"</td> | |
| 2703 | − <td valign="top" >RANGE</td> | |
| 2704 | − <td valign="top" >Min=0, Max=1</td> | |
| 2705 | − <td valign="top" >Connector</td> | |
| 2706 | − <td valign="top" >TBD</td> | |
| 2707 | − </tr> | |
| 2708 | − <tr> | |
| 2709 | − <td rowspan="9" valign="top" >radeon</td> | |
| 2710 | − <td valign="top" >DVI-I</td> | |
| 2711 | − <td valign="top" >“coherent”</td> | |
| 2712 | − <td valign="top" >RANGE</td> | |
| 2713 | − <td valign="top" >Min=0, Max=1</td> | |
| 2714 | − <td valign="top" >Connector</td> | |
| 2715 | − <td valign="top" >TBD</td> | |
| 2716 | − </tr> | |
| 2717 | − <tr> | |
| 2718 | − <td valign="top" >DAC enable load detect</td> | |
| 2719 | − <td valign="top" >“load detection”</td> | |
| 2720 | − <td valign="top" >RANGE</td> | |
| 2721 | − <td valign="top" >Min=0, Max=1</td> | |
| 2722 | − <td valign="top" >Connector</td> | |
| 2723 | − <td valign="top" >TBD</td> | |
| 2724 | − </tr> | |
| 2725 | − <tr> | |
| 2726 | − <td valign="top" >TV Standard</td> | |
| 2727 | − <td valign="top" >"tv standard"</td> | |
| 2728 | − <td valign="top" >ENUM</td> | |
| 2729 | − <td valign="top" >{ "ntsc", "pal", "pal-m", "pal-60", "ntsc-j" | |
| 2730 | − , "scart-pal", "pal-cn", "secam" }</td> | |
| 2731 | − <td valign="top" >Connector</td> | |
| 2732 | − <td valign="top" >TBD</td> | |
| 2733 | − </tr> | |
| 2734 | − <tr> | |
| 2735 | − <td valign="top" >legacy TMDS PLL detect</td> | |
| 2736 | − <td valign="top" >"tmds_pll"</td> | |
| 2737 | − <td valign="top" >ENUM</td> | |
| 2738 | − <td valign="top" >{ "driver", "bios" }</td> | |
| 2739 | − <td valign="top" >-</td> | |
| 2740 | − <td valign="top" >TBD</td> | |
| 2741 | − </tr> | |
| 2742 | − <tr> | |
| 2743 | − <td rowspan="3" valign="top" >Underscan</td> | |
| 2744 | − <td valign="top" >"underscan"</td> | |
| 2745 | − <td valign="top" >ENUM</td> | |
| 2746 | − <td valign="top" >{ "off", "on", "auto" }</td> | |
| 2747 | − <td valign="top" >Connector</td> | |
| 2748 | − <td valign="top" >TBD</td> | |
| 2749 | − </tr> | |
| 2750 | − <tr> | |
| 2751 | − <td valign="top" >"underscan hborder"</td> | |
| 2752 | − <td valign="top" >RANGE</td> | |
| 2753 | − <td valign="top" >Min=0, Max=128</td> | |
| 2754 | − <td valign="top" >Connector</td> | |
| 2755 | − <td valign="top" >TBD</td> | |
| 2756 | − </tr> | |
| 2757 | − <tr> | |
| 2758 | − <td valign="top" >"underscan vborder"</td> | |
| 2759 | − <td valign="top" >RANGE</td> | |
| 2760 | − <td valign="top" >Min=0, Max=128</td> | |
| 2761 | − <td valign="top" >Connector</td> | |
| 2762 | − <td valign="top" >TBD</td> | |
| 2763 | − </tr> | |
| 2764 | − <tr> | |
| 2765 | − <td valign="top" >Audio</td> | |
| 2766 | − <td valign="top" >“audio”</td> | |
| 2767 | − <td valign="top" >ENUM</td> | |
| 2768 | − <td valign="top" >{ "off", "on", "auto" }</td> | |
| 2769 | − <td valign="top" >Connector</td> | |
| 2770 | − <td valign="top" >TBD</td> | |
| 2771 | − </tr> | |
| 2772 | − <tr> | |
| 2773 | − <td valign="top" >FMT Dithering</td> | |
| 2774 | − <td valign="top" >“dither”</td> | |
| 2775 | − <td valign="top" >ENUM</td> | |
| 2776 | − <td valign="top" >{ "off", "on" }</td> | |
| 2777 | − <td valign="top" >Connector</td> | |
| 2778 | − <td valign="top" >TBD</td> | |
| 2779 | − </tr> | |
| 2780 | − <tr> | |
| 2781 | − <td rowspan="3" valign="top" >rcar-du</td> | |
| 2782 | − <td rowspan="3" valign="top" >Generic</td> | |
| 2783 | − <td valign="top" >"alpha"</td> | |
| 2784 | − <td valign="top" >RANGE</td> | |
| 2785 | − <td valign="top" >Min=0, Max=255</td> | |
| 2786 | − <td valign="top" >Plane</td> | |
| 2787 | − <td valign="top" >TBD</td> | |
| 2788 | − </tr> | |
| 2789 | − <tr> | |
| 2790 | − <td valign="top" >"colorkey"</td> | |
| 2791 | − <td valign="top" >RANGE</td> | |
| 2792 | − <td valign="top" >Min=0, Max=0x01ffffff</td> | |
| 2793 | − <td valign="top" >Plane</td> | |
| 2794 | − <td valign="top" >TBD</td> | |
| 2795 | − </tr> | |
| 2796 | − <tr> | |
| 2797 | − <td valign="top" >"zpos"</td> | |
| 2798 | − <td valign="top" >RANGE</td> | |
| 2799 | − <td valign="top" >Min=1, Max=7</td> | |
| 2800 | − <td valign="top" >Plane</td> | |
| 2801 | − <td valign="top" >TBD</td> | |
| 2802 | − </tr> | |
| 2803 | − </tbody> | |
| 2804 | − </table> | |
| 2805 | − </sect2> | |
| 2806 | − </sect1> | |
| 2807 | − | |
| 2808 | − <!-- Internals: vertical blanking --> | |
| 2809 | − | |
| 2810 | − <sect1 id="drm-vertical-blank"> | |
| 2811 | − <title>Vertical Blanking</title> | |
| 2812 | − <para> | |
| 2813 | − Vertical blanking plays a major role in graphics rendering. To achieve | |
| 2814 | − tear-free display, users must synchronize page flips and/or rendering to | |
| 2815 | − vertical blanking. The DRM API offers ioctls to perform page flips | |
| 2816 | − synchronized to vertical blanking and wait for vertical blanking. | |
| 2817 | − </para> | |
| 2818 | − <para> | |
| 2819 | − The DRM core handles most of the vertical blanking management logic, which | |
| 2820 | − involves filtering out spurious interrupts, keeping race-free blanking | |
| 2821 | − counters, coping with counter wrap-around and resets and keeping use | |
| 2822 | − counts. It relies on the driver to generate vertical blanking interrupts | |
| 2823 | − and optionally provide a hardware vertical blanking counter. Drivers must | |
| 2824 | − implement the following operations. | |
| 2825 | − </para> | |
| 2826 | − <itemizedlist> | |
| 2827 | − <listitem> | |
| 2828 | − <synopsis>int (*enable_vblank) (struct drm_device *dev, int crtc); | |
| 2829 | −void (*disable_vblank) (struct drm_device *dev, int crtc);</synopsis> | |
| 2830 | − <para> | |
| 2831 | − Enable or disable vertical blanking interrupts for the given CRTC. | |
| 2832 | − </para> | |
| 2833 | − </listitem> | |
| 2834 | − <listitem> | |
| 2835 | − <synopsis>u32 (*get_vblank_counter) (struct drm_device *dev, int crtc);</synopsis> | |
| 2836 | − <para> | |
| 2837 | − Retrieve the value of the vertical blanking counter for the given | |
| 2838 | − CRTC. If the hardware maintains a vertical blanking counter its value | |
| 2839 | − should be returned. Otherwise drivers can use the | |
| 2840 | − <function>drm_vblank_count</function> helper function to handle this | |
| 2841 | − operation. | |
| 2842 | − </para> | |
| 2843 | − </listitem> | |
| 2844 | − </itemizedlist> | |
| 2845 | − <para> | |
| 2846 | − Drivers must initialize the vertical blanking handling core with a call to | |
| 2847 | − <function>drm_vblank_init</function> in their | |
| 2848 | − <methodname>load</methodname> operation. The function will set the struct | |
| 2849 | − <structname>drm_device</structname> | |
| 2850 | − <structfield>vblank_disable_allowed</structfield> field to 0. This will | |
| 2851 | − keep vertical blanking interrupts enabled permanently until the first mode | |
| 2852 | − set operation, where <structfield>vblank_disable_allowed</structfield> is | |
| 2853 | − set to 1. The reason behind this is not clear. Drivers can set the field | |
| 2854 | − to 1 after <function>calling drm_vblank_init</function> to make vertical | |
| 2855 | − blanking interrupts dynamically managed from the beginning. | |
| 2856 | − </para> | |
| 2857 | − <para> | |
| 2858 | − Vertical blanking interrupts can be enabled by the DRM core or by drivers | |
| 2859 | − themselves (for instance to handle page flipping operations). The DRM core | |
| 2860 | − maintains a vertical blanking use count to ensure that the interrupts are | |
| 2861 | − not disabled while a user still needs them. To increment the use count, | |
| 2862 | − drivers call <function>drm_vblank_get</function>. Upon return vertical | |
| 2863 | − blanking interrupts are guaranteed to be enabled. | |
| 2864 | − </para> | |
| 2865 | − <para> | |
| 2866 | − To decrement the use count drivers call | |
| 2867 | − <function>drm_vblank_put</function>. Only when the use count drops to zero | |
| 2868 | − will the DRM core disable the vertical blanking interrupts after a delay | |
| 2869 | − by scheduling a timer. The delay is accessible through the vblankoffdelay | |
| 2870 | − module parameter or the <varname>drm_vblank_offdelay</varname> global | |
| 2871 | − variable and expressed in milliseconds. Its default value is 5000 ms. | |
| 2872 | − Zero means never disable, and a negative value means disable immediately. | |
| 2873 | − Drivers may override the behaviour by setting the | |
| 2874 | − <structname>drm_device</structname> | |
| 2875 | − <structfield>vblank_disable_immediate</structfield> flag, which when set | |
| 2876 | − causes vblank interrupts to be disabled immediately regardless of the | |
| 2877 | − drm_vblank_offdelay value. The flag should only be set if there's a | |
| 2878 | − properly working hardware vblank counter present. | |
| 2879 | − </para> | |
| 2880 | − <para> | |
| 2881 | − When a vertical blanking interrupt occurs drivers only need to call the | |
| 2882 | − <function>drm_handle_vblank</function> function to account for the | |
| 2883 | − interrupt. | |
| 2884 | − </para> | |
| 2885 | − <para> | |
| 2886 | − Resources allocated by <function>drm_vblank_init</function> must be freed | |
| 2887 | − with a call to <function>drm_vblank_cleanup</function> in the driver | |
| 2888 | − <methodname>unload</methodname> operation handler. | |
| 2889 | − </para> | |
| 2890 | − <sect2> | |
| 2891 | − <title>Vertical Blanking and Interrupt Handling Functions Reference</title> | |
| 2892 | −!Edrivers/gpu/drm/drm_irq.c | |
| 2893 | −!Finclude/drm/drmP.h drm_crtc_vblank_waitqueue | |
| 2894 | − </sect2> | |
| 2895 | − </sect1> | |
| 2896 | − | |
| 2897 | − <!-- Internals: open/close, file operations and ioctls --> | |
| 2898 | − | |
| 2899 | − <sect1> | |
| 2900 | − <title>Open/Close, File Operations and IOCTLs</title> | |
| 2901 | − <sect2> | |
| 2902 | − <title>Open and Close</title> | |
| 2903 | − <synopsis>int (*firstopen) (struct drm_device *); | |
| 2904 | −void (*lastclose) (struct drm_device *); | |
| 2905 | −int (*open) (struct drm_device *, struct drm_file *); | |
| 2906 | −void (*preclose) (struct drm_device *, struct drm_file *); | |
| 2907 | −void (*postclose) (struct drm_device *, struct drm_file *);</synopsis> | |
| 2908 | − <abstract>Open and close handlers. None of those methods are mandatory. | |
| 2909 | − </abstract> | |
| 2910 | − <para> | |
| 2911 | − The <methodname>firstopen</methodname> method is called by the DRM core | |
| 2912 | − for legacy UMS (User Mode Setting) drivers only when an application | |
| 2913 | − opens a device that has no other opened file handle. UMS drivers can | |
| 2914 | − implement it to acquire device resources. KMS drivers can't use the | |
| 2915 | − method and must acquire resources in the <methodname>load</methodname> | |
| 2916 | − method instead. | |
| 2917 | − </para> | |
| 2918 | − <para> | |
| 2919 | − Similarly the <methodname>lastclose</methodname> method is called when | |
| 2920 | − the last application holding a file handle opened on the device closes | |
| 2921 | − it, for both UMS and KMS drivers. Additionally, the method is also | |
| 2922 | − called at module unload time or, for hot-pluggable devices, when the | |
| 2923 | − device is unplugged. The <methodname>firstopen</methodname> and | |
| 2924 | − <methodname>lastclose</methodname> calls can thus be unbalanced. | |
| 2925 | − </para> | |
| 2926 | − <para> | |
| 2927 | − The <methodname>open</methodname> method is called every time the device | |
| 2928 | − is opened by an application. Drivers can allocate per-file private data | |
| 2929 | − in this method and store them in the struct | |
| 2930 | − <structname>drm_file</structname> <structfield>driver_priv</structfield> | |
| 2931 | − field. Note that the <methodname>open</methodname> method is called | |
| 2932 | − before <methodname>firstopen</methodname>. | |
| 2933 | − </para> | |
| 2934 | − <para> | |
| 2935 | − The close operation is split into <methodname>preclose</methodname> and | |
| 2936 | − <methodname>postclose</methodname> methods. Drivers must stop and | |
| 2937 | − cleanup all per-file operations in the <methodname>preclose</methodname> | |
| 2938 | − method. For instance pending vertical blanking and page flip events must | |
| 2939 | − be cancelled. No per-file operation is allowed on the file handle after | |
| 2940 | − returning from the <methodname>preclose</methodname> method. | |
| 2941 | − </para> | |
| 2942 | − <para> | |
| 2943 | − Finally the <methodname>postclose</methodname> method is called as the | |
| 2944 | − last step of the close operation, right before calling the | |
| 2945 | − <methodname>lastclose</methodname> method if no other open file handle | |
| 2946 | − exists for the device. Drivers that have allocated per-file private data | |
| 2947 | − in the <methodname>open</methodname> method should free it here. | |
| 2948 | − </para> | |
| 2949 | − <para> | |
| 2950 | − The <methodname>lastclose</methodname> method should restore CRTC and | |
| 2951 | − plane properties to default value, so that a subsequent open of the | |
| 2952 | − device will not inherit state from the previous user. It can also be | |
| 2953 | − used to execute delayed power switching state changes, e.g. in | |
| 2954 | − conjunction with the vga_switcheroo infrastructure (see | |
| 2955 | − <xref linkend="vga_switcheroo"/>). Beyond that KMS drivers should not | |
| 2956 | − do any further cleanup. Only legacy UMS drivers might need to clean up | |
| 2957 | − device state so that the vga console or an independent fbdev driver | |
| 2958 | − could take over. | |
| 2959 | − </para> | |
| 2960 | − </sect2> | |
| 2961 | − <sect2> | |
| 2962 | − <title>File Operations</title> | |
| 2963 | −!Pdrivers/gpu/drm/drm_fops.c file operations | |
| 2964 | −!Edrivers/gpu/drm/drm_fops.c | |
| 2965 | − </sect2> | |
| 2966 | − <sect2> | |
| 2967 | − <title>IOCTLs</title> | |
| 2968 | − <synopsis>struct drm_ioctl_desc *ioctls; | |
| 2969 | −int num_ioctls;</synopsis> | |
| 2970 | − <abstract>Driver-specific ioctls descriptors table.</abstract> | |
| 2971 | − <para> | |
| 2972 | − Driver-specific ioctls numbers start at DRM_COMMAND_BASE. The ioctls | |
| 2973 | − descriptors table is indexed by the ioctl number offset from the base | |
| 2974 | − value. Drivers can use the DRM_IOCTL_DEF_DRV() macro to initialize the | |
| 2975 | − table entries. | |
| 2976 | − </para> | |
| 2977 | − <para> | |
| 2978 | − <programlisting>DRM_IOCTL_DEF_DRV(ioctl, func, flags)</programlisting> | |
| 2979 | − <para> | |
| 2980 | − <parameter>ioctl</parameter> is the ioctl name. Drivers must define | |
| 2981 | − the DRM_##ioctl and DRM_IOCTL_##ioctl macros to the ioctl number | |
| 2982 | − offset from DRM_COMMAND_BASE and the ioctl number respectively. The | |
| 2983 | − first macro is private to the device while the second must be exposed | |
| 2984 | − to userspace in a public header. | |
| 2985 | − </para> | |
| 2986 | − <para> | |
| 2987 | − <parameter>func</parameter> is a pointer to the ioctl handler function | |
| 2988 | − compatible with the <type>drm_ioctl_t</type> type. | |
| 2989 | − <programlisting>typedef int drm_ioctl_t(struct drm_device *dev, void *data, | |
| 2990 | − struct drm_file *file_priv);</programlisting> | |
| 2991 | − </para> | |
| 2992 | − <para> | |
| 2993 | − <parameter>flags</parameter> is a bitmask combination of the following | |
| 2994 | − values. It restricts how the ioctl is allowed to be called. | |
| 2995 | − <itemizedlist> | |
| 2996 | − <listitem><para> | |
| 2997 | − DRM_AUTH - Only authenticated callers allowed | |
| 2998 | − </para></listitem> | |
| 2999 | − <listitem><para> | |
| 3000 | − DRM_MASTER - The ioctl can only be called on the master file | |
| 3001 | − handle | |
| 3002 | − </para></listitem> | |
| 3003 | − <listitem><para> | |
| 3004 | − DRM_ROOT_ONLY - Only callers with the SYSADMIN capability allowed | |
| 3005 | − </para></listitem> | |
| 3006 | − <listitem><para> | |
| 3007 | − DRM_CONTROL_ALLOW - The ioctl can only be called on a control | |
| 3008 | − device | |
| 3009 | − </para></listitem> | |
| 3010 | − <listitem><para> | |
| 3011 | − DRM_UNLOCKED - The ioctl handler will be called without locking | |
| 3012 | − the DRM global mutex. This is the enforced default for kms drivers | |
| 3013 | − (i.e. using the DRIVER_MODESET flag) and hence shouldn't be used | |
| 3014 | − any more for new drivers. | |
| 3015 | − </para></listitem> | |
| 3016 | − </itemizedlist> | |
| 3017 | − </para> | |
| 3018 | − </para> | |
| 3019 | −!Edrivers/gpu/drm/drm_ioctl.c | |
| 3020 | − </sect2> | |
| 3021 | − </sect1> | |
| 3022 | − <sect1> | |
| 3023 | − <title>Legacy Support Code</title> | |
| 3024 | − <para> | |
| 3025 | − The section very briefly covers some of the old legacy support code which | |
| 3026 | − is only used by old DRM drivers which have done a so-called shadow-attach | |
| 3027 | − to the underlying device instead of registering as a real driver. This | |
| 3028 | − also includes some of the old generic buffer management and command | |
| 3029 | − submission code. Do not use any of this in new and modern drivers. | |
| 3030 | − </para> | |
| 3031 | − | |
| 3032 | − <sect2> | |
| 3033 | − <title>Legacy Suspend/Resume</title> | |
| 3034 | − <para> | |
| 3035 | − The DRM core provides some suspend/resume code, but drivers wanting full | |
| 3036 | − suspend/resume support should provide save() and restore() functions. | |
| 3037 | − These are called at suspend, hibernate, or resume time, and should perform | |
| 3038 | − any state save or restore required by your device across suspend or | |
| 3039 | − hibernate states. | |
| 3040 | − </para> | |
| 3041 | − <synopsis>int (*suspend) (struct drm_device *, pm_message_t state); | |
| 3042 | − int (*resume) (struct drm_device *);</synopsis> | |
| 3043 | − <para> | |
| 3044 | − Those are legacy suspend and resume methods which | |
| 3045 | − <emphasis>only</emphasis> work with the legacy shadow-attach driver | |
| 3046 | − registration functions. New driver should use the power management | |
| 3047 | − interface provided by their bus type (usually through | |
| 3048 | − the struct <structname>device_driver</structname> dev_pm_ops) and set | |
| 3049 | − these methods to NULL. | |
| 3050 | − </para> | |
| 3051 | − </sect2> | |
| 3052 | − | |
| 3053 | − <sect2> | |
| 3054 | − <title>Legacy DMA Services</title> | |
| 3055 | − <para> | |
| 3056 | − This should cover how DMA mapping etc. is supported by the core. | |
| 3057 | − These functions are deprecated and should not be used. | |
| 3058 | − </para> | |
| 3059 | − </sect2> | |
| 3060 | − </sect1> | |
| 3061 | − </chapter> | |
| 3062 | − | |
| 3063 | −<!-- TODO | |
| 3064 | − | |
| 3065 | −- Add a glossary | |
| 3066 | −- Document the struct_mutex catch-all lock | |
| 3067 | −- Document connector properties | |
| 3068 | − | |
| 3069 | −- Why is the load method optional? | |
| 3070 | −- What are drivers supposed to set the initial display state to, and how? | |
| 3071 | − Connector's DPMS states are not initialized and are thus equal to | |
| 3072 | − DRM_MODE_DPMS_ON. The fbcon compatibility layer calls | |
| 3073 | − drm_helper_disable_unused_functions(), which disables unused encoders and | |
| 3074 | − CRTCs, but doesn't touch the connectors' DPMS state, and | |
| 3075 | − drm_helper_connector_dpms() in reaction to fbdev blanking events. Do drivers | |
| 3076 | − that don't implement (or just don't use) fbcon compatibility need to call | |
| 3077 | − those functions themselves? | |
| 3078 | −- KMS drivers must call drm_vblank_pre_modeset() and drm_vblank_post_modeset() | |
| 3079 | − around mode setting. Should this be done in the DRM core? | |
| 3080 | −- vblank_disable_allowed is set to 1 in the first drm_vblank_post_modeset() | |
| 3081 | − call and never set back to 0. It seems to be safe to permanently set it to 1 | |
| 3082 | − in drm_vblank_init() for KMS driver, and it might be safe for UMS drivers as | |
| 3083 | − well. This should be investigated. | |
| 3084 | −- crtc and connector .save and .restore operations are only used internally in | |
| 3085 | − drivers, should they be removed from the core? | |
| 3086 | −- encoder mid-layer .save and .restore operations are only used internally in | |
| 3087 | − drivers, should they be removed from the core? | |
| 3088 | −- encoder mid-layer .detect operation is only used internally in drivers, | |
| 3089 | − should it be removed from the core? | |
| 3090 | −--> | |
| 3091 | − | |
| 3092 | − <!-- External interfaces --> | |
| 3093 | − | |
| 3094 | − <chapter id="drmExternals"> | |
| 3095 | − <title>Userland interfaces</title> | |
| 3096 | − <para> | |
| 3097 | − The DRM core exports several interfaces to applications, | |
| 3098 | − generally intended to be used through corresponding libdrm | |
| 3099 | − wrapper functions. In addition, drivers export device-specific | |
| 3100 | − interfaces for use by userspace drivers & device-aware | |
| 3101 | − applications through ioctls and sysfs files. | |
| 3102 | − </para> | |
| 3103 | − <para> | |
| 3104 | − External interfaces include: memory mapping, context management, | |
| 3105 | − DMA operations, AGP management, vblank control, fence | |
| 3106 | − management, memory management, and output management. | |
| 3107 | − </para> | |
| 3108 | − <para> | |
| 3109 | − Cover generic ioctls and sysfs layout here. We only need high-level | |
| 3110 | − info, since man pages should cover the rest. | |
| 3111 | − </para> | |
| 3112 | − | |
| 3113 | − <!-- External: render nodes --> | |
| 3114 | − | |
| 3115 | − <sect1> | |
| 3116 | − <title>Render nodes</title> | |
| 3117 | − <para> | |
| 3118 | − DRM core provides multiple character-devices for user-space to use. | |
| 3119 | − Depending on which device is opened, user-space can perform a different | |
| 3120 | − set of operations (mainly ioctls). The primary node is always created | |
| 3121 | − and called card<num>. Additionally, a currently | |
| 3122 | − unused control node, called controlD<num> is also | |
| 3123 | − created. The primary node provides all legacy operations and | |
| 3124 | − historically was the only interface used by userspace. With KMS, the | |
| 3125 | − control node was introduced. However, the planned KMS control interface | |
| 3126 | − has never been written and so the control node stays unused to date. | |
| 3127 | − </para> | |
| 3128 | − <para> | |
| 3129 | − With the increased use of offscreen renderers and GPGPU applications, | |
| 3130 | − clients no longer require running compositors or graphics servers to | |
| 3131 | − make use of a GPU. But the DRM API required unprivileged clients to | |
| 3132 | − authenticate to a DRM-Master prior to getting GPU access. To avoid this | |
| 3133 | − step and to grant clients GPU access without authenticating, render | |
| 3134 | − nodes were introduced. Render nodes solely serve render clients, that | |
| 3135 | − is, no modesetting or privileged ioctls can be issued on render nodes. | |
| 3136 | − Only non-global rendering commands are allowed. If a driver supports | |
| 3137 | − render nodes, it must advertise it via the DRIVER_RENDER | |
| 3138 | − DRM driver capability. If not supported, the primary node must be used | |
| 3139 | − for render clients together with the legacy drmAuth authentication | |
| 3140 | − procedure. | |
| 3141 | − </para> | |
| 3142 | − <para> | |
| 3143 | − If a driver advertises render node support, DRM core will create a | |
| 3144 | − separate render node called renderD<num>. There will | |
| 3145 | − be one render node per device. No ioctls except PRIME-related ioctls | |
| 3146 | − will be allowed on this node. Especially GEM_OPEN will be | |
| 3147 | − explicitly prohibited. Render nodes are designed to avoid the | |
| 3148 | − buffer-leaks, which occur if clients guess the flink names or mmap | |
| 3149 | − offsets on the legacy interface. Additionally to this basic interface, | |
| 3150 | − drivers must mark their driver-dependent render-only ioctls as | |
| 3151 | − DRM_RENDER_ALLOW so render clients can use them. Driver | |
| 3152 | − authors must be careful not to allow any privileged ioctls on render | |
| 3153 | − nodes. | |
| 3154 | − </para> | |
| 3155 | − <para> | |
| 3156 | − With render nodes, user-space can now control access to the render node | |
| 3157 | − via basic file-system access-modes. A running graphics server which | |
| 3158 | − authenticates clients on the privileged primary/legacy node is no longer | |
| 3159 | − required. Instead, a client can open the render node and is immediately | |
| 3160 | − granted GPU access. Communication between clients (or servers) is done | |
| 3161 | − via PRIME. FLINK from render node to legacy node is not supported. New | |
| 3162 | − clients must not use the insecure FLINK interface. | |
| 3163 | − </para> | |
| 3164 | − <para> | |
| 3165 | − Besides dropping all modeset/global ioctls, render nodes also drop the | |
| 3166 | − DRM-Master concept. There is no reason to associate render clients with | |
| 3167 | − a DRM-Master as they are independent of any graphics server. Besides, | |
| 3168 | − they must work without any running master, anyway. | |
| 3169 | − Drivers must be able to run without a master object if they support | |
| 3170 | − render nodes. If, on the other hand, a driver requires shared state | |
| 3171 | − between clients which is visible to user-space and accessible beyond | |
| 3172 | − open-file boundaries, they cannot support render nodes. | |
| 3173 | − </para> | |
| 3174 | − </sect1> | |
| 3175 | − | |
| 3176 | − <!-- External: vblank handling --> | |
| 3177 | − | |
| 3178 | − <sect1> | |
| 3179 | − <title>VBlank event handling</title> | |
| 3180 | − <para> | |
| 3181 | − The DRM core exposes two vertical blank related ioctls: | |
| 3182 | − <variablelist> | |
| 3183 | − <varlistentry> | |
| 3184 | − <term>DRM_IOCTL_WAIT_VBLANK</term> | |
| 3185 | − <listitem> | |
| 3186 | − <para> | |
| 3187 | − This takes a struct drm_wait_vblank structure as its argument, | |
| 3188 | − and it is used to block or request a signal when a specified | |
| 3189 | − vblank event occurs. | |
| 3190 | − </para> | |
| 3191 | − </listitem> | |
| 3192 | − </varlistentry> | |
| 3193 | − <varlistentry> | |
| 3194 | − <term>DRM_IOCTL_MODESET_CTL</term> | |
| 3195 | − <listitem> | |
| 3196 | − <para> | |
| 3197 | − This was only used for user-mode-settind drivers around | |
| 3198 | − modesetting changes to allow the kernel to update the vblank | |
| 3199 | − interrupt after mode setting, since on many devices the vertical | |
| 3200 | − blank counter is reset to 0 at some point during modeset. Modern | |
| 3201 | − drivers should not call this any more since with kernel mode | |
| 3202 | − setting it is a no-op. | |
| 3203 | − </para> | |
| 3204 | − </listitem> | |
| 3205 | − </varlistentry> | |
| 3206 | − </variablelist> | |
| 3207 | − </para> | |
| 3208 | − </sect1> | |
| 3209 | − | |
| 3210 | − </chapter> | |
| 3211 | −</part> | |
| 3212 | −<part id="drmDrivers"> | |
| 3213 | − <title>DRM Drivers</title> | |
| 3214 | − | |
| 3215 | − <partintro> | |
| 3216 | − <para> | |
| 3217 | − This second part of the GPU Driver Developer's Guide documents driver | |
| 3218 | − code, implementation details and also all the driver-specific userspace | |
| 3219 | − interfaces. Especially since all hardware-acceleration interfaces to | |
| 3220 | − userspace are driver specific for efficiency and other reasons these | |
| 3221 | − interfaces can be rather substantial. Hence every driver has its own | |
| 3222 | − chapter. | |
| 3223 | − </para> | |
| 3224 | − </partintro> | |
| 3225 | − | |
| 3226 | − <chapter id="drmI915"> | |
| 3227 | − <title>drm/i915 Intel GFX Driver</title> | |
| 3228 | − <para> | |
| 3229 | − The drm/i915 driver supports all (with the exception of some very early | |
| 3230 | − models) integrated GFX chipsets with both Intel display and rendering | |
| 3231 | − blocks. This excludes a set of SoC platforms with an SGX rendering unit, | |
| 3232 | − those have basic support through the gma500 drm driver. | |
| 3233 | − </para> | |
| 3234 | − <sect1> | |
| 3235 | − <title>Core Driver Infrastructure</title> | |
| 3236 | − <para> | |
| 3237 | − This section covers core driver infrastructure used by both the display | |
| 3238 | − and the GEM parts of the driver. | |
| 3239 | − </para> | |
| 3240 | − <sect2> | |
| 3241 | − <title>Runtime Power Management</title> | |
| 3242 | −!Pdrivers/gpu/drm/i915/intel_runtime_pm.c runtime pm | |
| 3243 | −!Idrivers/gpu/drm/i915/intel_runtime_pm.c | |
| 3244 | −!Idrivers/gpu/drm/i915/intel_uncore.c | |
| 3245 | − </sect2> | |
| 3246 | − <sect2> | |
| 3247 | − <title>Interrupt Handling</title> | |
| 3248 | −!Pdrivers/gpu/drm/i915/i915_irq.c interrupt handling | |
| 3249 | −!Fdrivers/gpu/drm/i915/i915_irq.c intel_irq_init intel_irq_init_hw intel_hpd_init | |
| 3250 | −!Fdrivers/gpu/drm/i915/i915_irq.c intel_runtime_pm_disable_interrupts | |
| 3251 | −!Fdrivers/gpu/drm/i915/i915_irq.c intel_runtime_pm_enable_interrupts | |
| 3252 | − </sect2> | |
| 3253 | − <sect2> | |
| 3254 | − <title>Intel GVT-g Guest Support(vGPU)</title> | |
| 3255 | −!Pdrivers/gpu/drm/i915/i915_vgpu.c Intel GVT-g guest support | |
| 3256 | −!Idrivers/gpu/drm/i915/i915_vgpu.c | |
| 3257 | − </sect2> | |
| 3258 | − </sect1> | |
| 3259 | − <sect1> | |
| 3260 | − <title>Display Hardware Handling</title> | |
| 3261 | − <para> | |
| 3262 | − This section covers everything related to the display hardware including | |
| 3263 | − the mode setting infrastructure, plane, sprite and cursor handling and | |
| 3264 | − display, output probing and related topics. | |
| 3265 | − </para> | |
| 3266 | − <sect2> | |
| 3267 | − <title>Mode Setting Infrastructure</title> | |
| 3268 | − <para> | |
| 3269 | − The i915 driver is thus far the only DRM driver which doesn't use the | |
| 3270 | − common DRM helper code to implement mode setting sequences. Thus it | |
| 3271 | − has its own tailor-made infrastructure for executing a display | |
| 3272 | − configuration change. | |
| 3273 | − </para> | |
| 3274 | − </sect2> | |
| 3275 | − <sect2> | |
| 3276 | − <title>Frontbuffer Tracking</title> | |
| 3277 | −!Pdrivers/gpu/drm/i915/intel_frontbuffer.c frontbuffer tracking | |
| 3278 | −!Idrivers/gpu/drm/i915/intel_frontbuffer.c | |
| 3279 | −!Fdrivers/gpu/drm/i915/i915_gem.c i915_gem_track_fb | |
| 3280 | − </sect2> | |
| 3281 | − <sect2> | |
| 3282 | − <title>Display FIFO Underrun Reporting</title> | |
| 3283 | −!Pdrivers/gpu/drm/i915/intel_fifo_underrun.c fifo underrun handling | |
| 3284 | −!Idrivers/gpu/drm/i915/intel_fifo_underrun.c | |
| 3285 | − </sect2> | |
| 3286 | − <sect2> | |
| 3287 | − <title>Plane Configuration</title> | |
| 3288 | − <para> | |
| 3289 | − This section covers plane configuration and composition with the | |
| 3290 | − primary plane, sprites, cursors and overlays. This includes the | |
| 3291 | − infrastructure to do atomic vsync'ed updates of all this state and | |
| 3292 | − also tightly coupled topics like watermark setup and computation, | |
| 3293 | − framebuffer compression and panel self refresh. | |
| 3294 | − </para> | |
| 3295 | − </sect2> | |
| 3296 | − <sect2> | |
| 3297 | − <title>Atomic Plane Helpers</title> | |
| 3298 | −!Pdrivers/gpu/drm/i915/intel_atomic_plane.c atomic plane helpers | |
| 3299 | −!Idrivers/gpu/drm/i915/intel_atomic_plane.c | |
| 3300 | − </sect2> | |
| 3301 | − <sect2> | |
| 3302 | − <title>Output Probing</title> | |
| 3303 | − <para> | |
| 3304 | − This section covers output probing and related infrastructure like the | |
| 3305 | − hotplug interrupt storm detection and mitigation code. Note that the | |
| 3306 | − i915 driver still uses most of the common DRM helper code for output | |
| 3307 | − probing, so those sections fully apply. | |
| 3308 | − </para> | |
| 3309 | − </sect2> | |
| 3310 | − <sect2> | |
| 3311 | − <title>Hotplug</title> | |
| 3312 | −!Pdrivers/gpu/drm/i915/intel_hotplug.c Hotplug | |
| 3313 | −!Idrivers/gpu/drm/i915/intel_hotplug.c | |
| 3314 | − </sect2> | |
| 3315 | − <sect2> | |
| 3316 | − <title>High Definition Audio</title> | |
| 3317 | −!Pdrivers/gpu/drm/i915/intel_audio.c High Definition Audio over HDMI and Display Port | |
| 3318 | −!Idrivers/gpu/drm/i915/intel_audio.c | |
| 3319 | −!Iinclude/drm/i915_component.h | |
| 3320 | − </sect2> | |
| 3321 | − <sect2> | |
| 3322 | − <title>Panel Self Refresh PSR (PSR/SRD)</title> | |
| 3323 | −!Pdrivers/gpu/drm/i915/intel_psr.c Panel Self Refresh (PSR/SRD) | |
| 3324 | −!Idrivers/gpu/drm/i915/intel_psr.c | |
| 3325 | − </sect2> | |
| 3326 | − <sect2> | |
| 3327 | − <title>Frame Buffer Compression (FBC)</title> | |
| 3328 | −!Pdrivers/gpu/drm/i915/intel_fbc.c Frame Buffer Compression (FBC) | |
| 3329 | −!Idrivers/gpu/drm/i915/intel_fbc.c | |
| 3330 | − </sect2> | |
| 3331 | − <sect2> | |
| 3332 | − <title>Display Refresh Rate Switching (DRRS)</title> | |
| 3333 | −!Pdrivers/gpu/drm/i915/intel_dp.c Display Refresh Rate Switching (DRRS) | |
| 3334 | −!Fdrivers/gpu/drm/i915/intel_dp.c intel_dp_set_drrs_state | |
| 3335 | −!Fdrivers/gpu/drm/i915/intel_dp.c intel_edp_drrs_enable | |
| 3336 | −!Fdrivers/gpu/drm/i915/intel_dp.c intel_edp_drrs_disable | |
| 3337 | −!Fdrivers/gpu/drm/i915/intel_dp.c intel_edp_drrs_invalidate | |
| 3338 | −!Fdrivers/gpu/drm/i915/intel_dp.c intel_edp_drrs_flush | |
| 3339 | −!Fdrivers/gpu/drm/i915/intel_dp.c intel_dp_drrs_init | |
| 3340 | − | |
| 3341 | − </sect2> | |
| 3342 | − <sect2> | |
| 3343 | − <title>DPIO</title> | |
| 3344 | −!Pdrivers/gpu/drm/i915/i915_reg.h DPIO | |
| 3345 | − </sect2> | |
| 3346 | − | |
| 3347 | − <sect2> | |
| 3348 | − <title>CSR firmware support for DMC</title> | |
| 3349 | −!Pdrivers/gpu/drm/i915/intel_csr.c csr support for dmc | |
| 3350 | −!Idrivers/gpu/drm/i915/intel_csr.c | |
| 3351 | − </sect2> | |
| 3352 | − <sect2> | |
| 3353 | − <title>Video BIOS Table (VBT)</title> | |
| 3354 | −!Pdrivers/gpu/drm/i915/intel_bios.c Video BIOS Table (VBT) | |
| 3355 | −!Idrivers/gpu/drm/i915/intel_bios.c | |
| 3356 | −!Idrivers/gpu/drm/i915/intel_vbt_defs.h | |
| 3357 | − </sect2> | |
| 3358 | − </sect1> | |
| 3359 | − | |
| 3360 | − <sect1> | |
| 3361 | − <title>Memory Management and Command Submission</title> | |
| 3362 | − <para> | |
| 3363 | − This sections covers all things related to the GEM implementation in the | |
| 3364 | − i915 driver. | |
| 3365 | − </para> | |
| 3366 | − <sect2> | |
| 3367 | − <title>Batchbuffer Parsing</title> | |
| 3368 | −!Pdrivers/gpu/drm/i915/i915_cmd_parser.c batch buffer command parser | |
| 3369 | −!Idrivers/gpu/drm/i915/i915_cmd_parser.c | |
| 3370 | − </sect2> | |
| 3371 | − <sect2> | |
| 3372 | − <title>Batchbuffer Pools</title> | |
| 3373 | −!Pdrivers/gpu/drm/i915/i915_gem_batch_pool.c batch pool | |
| 3374 | −!Idrivers/gpu/drm/i915/i915_gem_batch_pool.c | |
| 3375 | − </sect2> | |
| 3376 | − <sect2> | |
| 3377 | − <title>Logical Rings, Logical Ring Contexts and Execlists</title> | |
| 3378 | −!Pdrivers/gpu/drm/i915/intel_lrc.c Logical Rings, Logical Ring Contexts and Execlists | |
| 3379 | −!Idrivers/gpu/drm/i915/intel_lrc.c | |
| 3380 | − </sect2> | |
| 3381 | − <sect2> | |
| 3382 | − <title>Global GTT views</title> | |
| 3383 | −!Pdrivers/gpu/drm/i915/i915_gem_gtt.c Global GTT views | |
| 3384 | −!Idrivers/gpu/drm/i915/i915_gem_gtt.c | |
| 3385 | − </sect2> | |
| 3386 | − <sect2> | |
| 3387 | − <title>GTT Fences and Swizzling</title> | |
| 3388 | −!Idrivers/gpu/drm/i915/i915_gem_fence.c | |
| 3389 | − <sect3> | |
| 3390 | − <title>Global GTT Fence Handling</title> | |
| 3391 | −!Pdrivers/gpu/drm/i915/i915_gem_fence.c fence register handling | |
| 3392 | − </sect3> | |
| 3393 | − <sect3> | |
| 3394 | − <title>Hardware Tiling and Swizzling Details</title> | |
| 3395 | −!Pdrivers/gpu/drm/i915/i915_gem_fence.c tiling swizzling details | |
| 3396 | − </sect3> | |
| 3397 | − </sect2> | |
| 3398 | − <sect2> | |
| 3399 | − <title>Object Tiling IOCTLs</title> | |
| 3400 | −!Idrivers/gpu/drm/i915/i915_gem_tiling.c | |
| 3401 | −!Pdrivers/gpu/drm/i915/i915_gem_tiling.c buffer object tiling | |
| 3402 | − </sect2> | |
| 3403 | − <sect2> | |
| 3404 | − <title>Buffer Object Eviction</title> | |
| 3405 | − <para> | |
| 3406 | − This section documents the interface functions for evicting buffer | |
| 3407 | − objects to make space available in the virtual gpu address spaces. | |
| 3408 | − Note that this is mostly orthogonal to shrinking buffer objects | |
| 3409 | − caches, which has the goal to make main memory (shared with the gpu | |
| 3410 | − through the unified memory architecture) available. | |
| 3411 | − </para> | |
| 3412 | −!Idrivers/gpu/drm/i915/i915_gem_evict.c | |
| 3413 | − </sect2> | |
| 3414 | − <sect2> | |
| 3415 | − <title>Buffer Object Memory Shrinking</title> | |
| 3416 | − <para> | |
| 3417 | − This section documents the interface function for shrinking memory | |
| 3418 | − usage of buffer object caches. Shrinking is used to make main memory | |
| 3419 | − available. Note that this is mostly orthogonal to evicting buffer | |
| 3420 | − objects, which has the goal to make space in gpu virtual address | |
| 3421 | − spaces. | |
| 3422 | − </para> | |
| 3423 | −!Idrivers/gpu/drm/i915/i915_gem_shrinker.c | |
| 3424 | − </sect2> | |
| 3425 | − </sect1> | |
| 3426 | − <sect1> | |
| 3427 | − <title>GuC</title> | |
| 3428 | − <sect2> | |
| 3429 | − <title>GuC-specific firmware loader</title> | |
| 3430 | −!Pdrivers/gpu/drm/i915/intel_guc_loader.c GuC-specific firmware loader | |
| 3431 | −!Idrivers/gpu/drm/i915/intel_guc_loader.c | |
| 3432 | − </sect2> | |
| 3433 | − <sect2> | |
| 3434 | − <title>GuC-based command submission</title> | |
| 3435 | −!Pdrivers/gpu/drm/i915/i915_guc_submission.c GuC-based command submission | |
| 3436 | −!Idrivers/gpu/drm/i915/i915_guc_submission.c | |
| 3437 | − </sect2> | |
| 3438 | − <sect2> | |
| 3439 | − <title>GuC Firmware Layout</title> | |
| 3440 | −!Pdrivers/gpu/drm/i915/intel_guc_fwif.h GuC Firmware Layout | |
| 3441 | − </sect2> | |
| 3442 | − </sect1> | |
| 3443 | − | |
| 3444 | − <sect1> | |
| 3445 | − <title> Tracing </title> | |
| 3446 | − <para> | |
| 3447 | − This sections covers all things related to the tracepoints implemented in | |
| 3448 | − the i915 driver. | |
| 3449 | − </para> | |
| 3450 | − <sect2> | |
| 3451 | − <title> i915_ppgtt_create and i915_ppgtt_release </title> | |
| 3452 | −!Pdrivers/gpu/drm/i915/i915_trace.h i915_ppgtt_create and i915_ppgtt_release tracepoints | |
| 3453 | − </sect2> | |
| 3454 | − <sect2> | |
| 3455 | − <title> i915_context_create and i915_context_free </title> | |
| 3456 | −!Pdrivers/gpu/drm/i915/i915_trace.h i915_context_create and i915_context_free tracepoints | |
| 3457 | − </sect2> | |
| 3458 | − <sect2> | |
| 3459 | − <title> switch_mm </title> | |
| 3460 | −!Pdrivers/gpu/drm/i915/i915_trace.h switch_mm tracepoint | |
| 3461 | − </sect2> | |
| 3462 | − </sect1> | |
| 3463 | − | |
| 3464 | − </chapter> | |
| 3465 | −!Cdrivers/gpu/drm/i915/i915_irq.c | |
| 3466 | −</part> | |
| 3467 | − | |
| 3468 | −<part id="vga_switcheroo"> | |
| 3469 | − <title>vga_switcheroo</title> | |
| 3470 | − <partintro> | |
| 3471 | −!Pdrivers/gpu/vga/vga_switcheroo.c Overview | |
| 3472 | − </partintro> | |
| 3473 | − | |
| 3474 | − <chapter id="modes_of_use"> | |
| 3475 | − <title>Modes of Use</title> | |
| 3476 | − <sect1> | |
| 3477 | − <title>Manual switching and manual power control</title> | |
| 3478 | −!Pdrivers/gpu/vga/vga_switcheroo.c Manual switching and manual power control | |
| 3479 | − </sect1> | |
| 3480 | − <sect1> | |
| 3481 | − <title>Driver power control</title> | |
| 3482 | −!Pdrivers/gpu/vga/vga_switcheroo.c Driver power control | |
| 3483 | − </sect1> | |
| 3484 | − </chapter> | |
| 3485 | − | |
| 3486 | − <chapter id="api"> | |
| 3487 | − <title>API</title> | |
| 3488 | − <sect1> | |
| 3489 | − <title>Public functions</title> | |
| 3490 | −!Edrivers/gpu/vga/vga_switcheroo.c | |
| 3491 | − </sect1> | |
| 3492 | − <sect1> | |
| 3493 | − <title>Public structures</title> | |
| 3494 | −!Finclude/linux/vga_switcheroo.h vga_switcheroo_handler | |
| 3495 | −!Finclude/linux/vga_switcheroo.h vga_switcheroo_client_ops | |
| 3496 | − </sect1> | |
| 3497 | − <sect1> | |
| 3498 | − <title>Public constants</title> | |
| 3499 | −!Finclude/linux/vga_switcheroo.h vga_switcheroo_handler_flags_t | |
| 3500 | −!Finclude/linux/vga_switcheroo.h vga_switcheroo_client_id | |
| 3501 | −!Finclude/linux/vga_switcheroo.h vga_switcheroo_state | |
| 3502 | − </sect1> | |
| 3503 | − <sect1> | |
| 3504 | − <title>Private structures</title> | |
| 3505 | −!Fdrivers/gpu/vga/vga_switcheroo.c vgasr_priv | |
| 3506 | −!Fdrivers/gpu/vga/vga_switcheroo.c vga_switcheroo_client | |
| 3507 | − </sect1> | |
| 3508 | − </chapter> | |
| 3509 | − | |
| 3510 | − <chapter id="handlers"> | |
| 3511 | − <title>Handlers</title> | |
| 3512 | − <sect1> | |
| 3513 | − <title>apple-gmux Handler</title> | |
| 3514 | −!Pdrivers/platform/x86/apple-gmux.c Overview | |
| 3515 | −!Pdrivers/platform/x86/apple-gmux.c Interrupt | |
| 3516 | − <sect2> | |
| 3517 | − <title>Graphics mux</title> | |
| 3518 | −!Pdrivers/platform/x86/apple-gmux.c Graphics mux | |
| 3519 | − </sect2> | |
| 3520 | − <sect2> | |
| 3521 | − <title>Power control</title> | |
| 3522 | −!Pdrivers/platform/x86/apple-gmux.c Power control | |
| 3523 | − </sect2> | |
| 3524 | − <sect2> | |
| 3525 | − <title>Backlight control</title> | |
| 3526 | −!Pdrivers/platform/x86/apple-gmux.c Backlight control | |
| 3527 | − </sect2> | |
| 3528 | − <sect2> | |
| 3529 | − <title>Public functions</title> | |
| 3530 | −!Iinclude/linux/apple-gmux.h | |
| 3531 | − </sect2> | |
| 3532 | − </sect1> | |
| 3533 | − </chapter> | |
| 3534 | − | |
| 3535 | −!Cdrivers/gpu/vga/vga_switcheroo.c | |
| 3536 | −!Cinclude/linux/vga_switcheroo.h | |
| 3537 | −!Cdrivers/platform/x86/apple-gmux.c | |
| 3538 | −</part> | |
| 3539 | − | |
| 3540 | −</book> | |
| @@ -1 +0,0 @@ | ||
| 1 | −!*.svg | |
| @@ -1,427 +0,0 @@ | ||
| 1 | −### | |
| 2 | −# Media build rules - Auto-generates media contents/indexes and *.h xml's | |
| 3 | −# | |
| 4 | − | |
| 5 | −SHELL=/bin/bash | |
| 6 | − | |
| 7 | −MEDIA_OBJ_DIR=$(objtree)/Documentation/DocBook/ | |
| 8 | −MEDIA_SRC_DIR=$(srctree)/Documentation/DocBook/media | |
| 9 | − | |
| 10 | −MEDIA_TEMP = media-entities.tmpl \ | |
| 11 | − media-indices.tmpl \ | |
| 12 | − videodev2.h.xml \ | |
| 13 | − v4l2.xml \ | |
| 14 | − audio.h.xml \ | |
| 15 | − ca.h.xml \ | |
| 16 | − dmx.h.xml \ | |
| 17 | − frontend.h.xml \ | |
| 18 | − net.h.xml \ | |
| 19 | − video.h.xml \ | |
| 20 | − | |
| 21 | −IMGFILES := $(patsubst %.b64,%, $(notdir $(shell ls $(MEDIA_SRC_DIR)/*.b64))) | |
| 22 | −OBJIMGFILES := $(addprefix $(MEDIA_OBJ_DIR)/, $(IMGFILES)) | |
| 23 | −GENFILES := $(addprefix $(MEDIA_OBJ_DIR)/, $(MEDIA_TEMP)) | |
| 24 | − | |
| 25 | −PHONY += cleanmediadocs | |
| 26 | − | |
| 27 | −cleanmediadocs: | |
| 28 | − -@rm -f `find $(MEDIA_OBJ_DIR) -type l` $(GENFILES) $(OBJIMGFILES) 2>/dev/null | |
| 29 | − | |
| 30 | −$(obj)/media_api.xml: $(GENFILES) FORCE | |
| 31 | − | |
| 32 | −#$(MEDIA_OBJ_DIR)/media_api.html: $(MEDIA_OBJ_DIR)/media_api.xml | |
| 33 | −#$(MEDIA_OBJ_DIR)/media_api.pdf: $(MEDIA_OBJ_DIR)/media_api.xml | |
| 34 | −#$(MEDIA_OBJ_DIR)/media_api.ps: $(MEDIA_OBJ_DIR)/media_api.xml | |
| 35 | − | |
| 36 | −V4L_SGMLS = \ | |
| 37 | − $(shell ls $(MEDIA_SRC_DIR)/v4l/*.xml|perl -ne 'print "$$1 " if (m,.*/(.*)\n,)') \ | |
| 38 | − capture.c.xml \ | |
| 39 | − keytable.c.xml \ | |
| 40 | − v4l2grab.c.xml | |
| 41 | − | |
| 42 | −DVB_SGMLS = \ | |
| 43 | − $(shell ls $(MEDIA_SRC_DIR)/dvb/*.xml|perl -ne 'print "$$1 " if (m,.*/(.*)\n,)') | |
| 44 | − | |
| 45 | −MEDIA_SGMLS = $(addprefix ./,$(V4L_SGMLS)) $(addprefix ./,$(DVB_SGMLS)) $(addprefix ./,$(MEDIA_TEMP)) | |
| 46 | − | |
| 47 | −FUNCS = \ | |
| 48 | − close \ | |
| 49 | − ioctl \ | |
| 50 | − mmap \ | |
| 51 | − munmap \ | |
| 52 | − open \ | |
| 53 | − poll \ | |
| 54 | − read \ | |
| 55 | − select \ | |
| 56 | − write \ | |
| 57 | − | |
| 58 | −IOCTLS = \ | |
| 59 | − $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/uapi/linux/videodev2.h) \ | |
| 60 | − $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/uapi/linux/dvb/audio.h) \ | |
| 61 | − $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/uapi/linux/dvb/ca.h) \ | |
| 62 | − $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/uapi/linux/dvb/dmx.h) \ | |
| 63 | − $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/uapi/linux/dvb/frontend.h) \ | |
| 64 | − $(shell perl -ne 'print "$$1 " if /\#define\s+([A-Z][^\s]+)\s+_IO/' $(srctree)/include/uapi/linux/dvb/net.h) \ | |
| 65 | − $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/uapi/linux/dvb/video.h) \ | |
| 66 | − $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/uapi/linux/media.h) \ | |
| 67 | − $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/linux/cec.h) \ | |
| 68 | − $(shell perl -ne 'print "$$1 " if /\#define\s+([^\s]+)\s+_IO/' $(srctree)/include/uapi/linux/v4l2-subdev.h) \ | |
| 69 | − | |
| 70 | −DEFINES = \ | |
| 71 | − $(shell perl -ne 'print "$$1 " if /\#define\s+(DTV_[^\s]+)\s+/' $(srctree)/include/uapi/linux/dvb/frontend.h) \ | |
| 72 | − | |
| 73 | −TYPES = \ | |
| 74 | − $(shell perl -ne 'print "$$1 " if /^typedef\s+.*\s+(\S+)\;/' $(srctree)/include/uapi/linux/videodev2.h) \ | |
| 75 | − $(shell perl -ne 'print "$$1 " if /^typedef\s+.*\s+(\S+)\;/' $(srctree)/include/uapi/linux/dvb/frontend.h) | |
| 76 | − | |
| 77 | −ENUMS = \ | |
| 78 | − $(shell perl -ne 'print "$$1 " if /^enum\s+([^\s]+)\s+/' \ | |
| 79 | − $(srctree)/include/uapi/linux/videodev2.h \ | |
| 80 | − $(srctree)/include/uapi/linux/dvb/audio.h \ | |
| 81 | − $(srctree)/include/uapi/linux/dvb/ca.h \ | |
| 82 | − $(srctree)/include/uapi/linux/dvb/dmx.h \ | |
| 83 | − $(srctree)/include/uapi/linux/dvb/frontend.h \ | |
| 84 | − $(srctree)/include/uapi/linux/dvb/net.h \ | |
| 85 | − $(srctree)/include/uapi/linux/dvb/video.h \ | |
| 86 | − $(srctree)/include/uapi/linux/media.h \ | |
| 87 | − $(srctree)/include/uapi/linux/v4l2-mediabus.h \ | |
| 88 | − $(srctree)/include/uapi/linux/v4l2-subdev.h) | |
| 89 | − | |
| 90 | −ENUM_DEFS = \ | |
| 91 | − $(shell perl -e 'open IN,"cat @ARGV| cpp -fpreprocessed |"; while (<IN>) { if ($$enum) {print "$$1\n" if (/\s*([A-Z]\S+)\b/); } $$enum = 0 if ($$enum && /^\}/); $$enum = 1 if(/^\s*enum\s/); }; close IN;' \ | |
| 92 | − $(srctree)/include/uapi/linux/dvb/dmx.h \ | |
| 93 | − $(srctree)/include/uapi/linux/dvb/frontend.h) | |
| 94 | − | |
| 95 | −STRUCTS = \ | |
| 96 | − $(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/videodev2.h) \ | |
| 97 | − $(shell perl -ne 'print "$$1 " if (/^struct\s+([^\s\{]+)\s*/)' $(srctree)/include/uapi/linux/dvb/audio.h) \ | |
| 98 | − $(shell perl -ne 'print "$$1 " if (/^struct\s+([^\s]+)\s+/)' $(srctree)/include/uapi/linux/dvb/ca.h) \ | |
| 99 | − $(shell perl -ne 'print "$$1 " if (/^struct\s+([^\s]+)\s+/)' $(srctree)/include/uapi/linux/dvb/dmx.h) \ | |
| 100 | − $(shell perl -ne 'print "$$1 " if (!/dtv\_cmds\_h/ && /^struct\s+([^\s]+)\s+/)' $(srctree)/include/uapi/linux/dvb/frontend.h) \ | |
| 101 | − $(shell perl -ne 'print "$$1 " if (/^struct\s+([^\s]+)\s+/ && !/_old/)' $(srctree)/include/uapi/linux/dvb/net.h) \ | |
| 102 | − $(shell perl -ne 'print "$$1 " if (/^struct\s+([^\s]+)\s+/)' $(srctree)/include/uapi/linux/dvb/video.h) \ | |
| 103 | − $(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/media.h) \ | |
| 104 | − $(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/linux/cec.h) \ | |
| 105 | − $(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/v4l2-subdev.h) \ | |
| 106 | − $(shell perl -ne 'print "$$1 " if /^struct\s+([^\s]+)\s+/' $(srctree)/include/uapi/linux/v4l2-mediabus.h) | |
| 107 | − | |
| 108 | −ERRORS = \ | |
| 109 | − E2BIG \ | |
| 110 | − EACCES \ | |
| 111 | − EAGAIN \ | |
| 112 | − EBADF \ | |
| 113 | − EBADFD \ | |
| 114 | − EBADR \ | |
| 115 | − EBADRQC \ | |
| 116 | − EBUSY \ | |
| 117 | − ECHILD \ | |
| 118 | − ECONNRESET \ | |
| 119 | − EDEADLK \ | |
| 120 | − EDOM \ | |
| 121 | − EEXIST \ | |
| 122 | − EFAULT \ | |
| 123 | − EFBIG \ | |
| 124 | − EILSEQ \ | |
| 125 | − EINIT \ | |
| 126 | − EINPROGRESS \ | |
| 127 | − EINTR \ | |
| 128 | − EINVAL \ | |
| 129 | − EIO \ | |
| 130 | − EMFILE \ | |
| 131 | − ENFILE \ | |
| 132 | − ENOBUFS \ | |
| 133 | − ENODATA \ | |
| 134 | − ENODEV \ | |
| 135 | − ENOENT \ | |
| 136 | − ENOIOCTLCMD \ | |
| 137 | − ENOMEM \ | |
| 138 | − ENOSPC \ | |
| 139 | − ENOSR \ | |
| 140 | − ENOSYS \ | |
| 141 | − ENOTSUP \ | |
| 142 | − ENOTSUPP \ | |
| 143 | − ENOTTY \ | |
| 144 | − ENXIO \ | |
| 145 | − EOPNOTSUPP \ | |
| 146 | − EOVERFLOW \ | |
| 147 | − EPERM \ | |
| 148 | − EPIPE \ | |
| 149 | − EPROTO \ | |
| 150 | − ERANGE \ | |
| 151 | − EREMOTE \ | |
| 152 | − EREMOTEIO \ | |
| 153 | − ERESTART \ | |
| 154 | − ERESTARTSYS \ | |
| 155 | − ESHUTDOWN \ | |
| 156 | − ESPIPE \ | |
| 157 | − ETIME \ | |
| 158 | − ETIMEDOUT \ | |
| 159 | − EUSERS \ | |
| 160 | − EWOULDBLOCK \ | |
| 161 | − EXDEV \ | |
| 162 | − | |
| 163 | −ESCAPE = \ | |
| 164 | − -e "s/&/\\&/g" \ | |
| 165 | − -e "s/</\\</g" \ | |
| 166 | − -e "s/>/\\>/g" | |
| 167 | − | |
| 168 | −FILENAME = \ | |
| 169 | − -e s,"^[^\/]*/",, \ | |
| 170 | − -e s/"\\.xml"// \ | |
| 171 | − -e s/"\\.tmpl"// \ | |
| 172 | − -e s/\\\./-/g \ | |
| 173 | − -e s/"^func-"// \ | |
| 174 | − -e s/"^pixfmt-"// \ | |
| 175 | − -e s/"^vidioc-"// | |
| 176 | − | |
| 177 | −# Generate references to these structs in videodev2.h.xml. | |
| 178 | −DOCUMENTED = \ | |
| 179 | − -e "s/\(enum *\)v4l2_mpeg_cx2341x_video_\([a-z]*_spatial_filter_type\)/\1<link linkend=\"\2\">v4l2_mpeg_cx2341x_video_\2<\/link>/g" \ | |
| 180 | − -e "s/\(\(enum\|struct\) *\)\(v4l2_[a-zA-Z0-9_]*\)/\1<link linkend=\"\3\">\3<\/link>/g" \ | |
| 181 | − -e "s/\(V4L2_PIX_FMT_[A-Z0-9_]\+\)\(\s\+v4l2_fourcc\)/<link linkend=\"\1\">\1<\/link>\2/g" \ | |
| 182 | − -e ":a;s/\(linkend=\".*\)_\(.*\">\)/\1-\2/;ta" \ | |
| 183 | − -e "s/v4l2\-mpeg\-vbi\-ITV0/v4l2-mpeg-vbi-itv0-1/g" | |
| 184 | − | |
| 185 | −DVB_DOCUMENTED = \ | |
| 186 | − -e "s,\(struct\s\+\)\([a-z0-9_]\+\)\(\s\+{\),\1\<link linkend=\"\2\">\2\<\/link\>\3,g" \ | |
| 187 | − -e "s,\(}\s\+\)\([a-z0-9_]\+_t\+\),\1\<link linkend=\"\2\">\2\<\/link\>,g" \ | |
| 188 | − -e "s,\(define\s\+\)\(DTV_[A-Z0-9_]\+\)\(\s\+[0-9]\+\),\1\<link linkend=\"\2\">\2\<\/link\>\3,g" \ | |
| 189 | − -e "s,<link\s\+linkend=\".*\">\(DTV_IOCTL_MAX_MSGS\|dtv_cmds_h\|__.*_old\)<\/link>,\1,g" \ | |
| 190 | − -e ":a;s/\(linkend=\".*\)_\(.*\">\)/\1-\2/;ta" \ | |
| 191 | − -e "s,\(audio-mixer\|audio-karaoke\|audio-status\|ca-slot-info\|ca-descr-info\|ca-caps\|ca-msg\|ca-descr\|ca-pid\|dmx-filter\|dmx-caps\|video-system\|video-highlight\|video-spu\|video-spu-palette\|video-navi-pack\)-t,\1,g" \ | |
| 192 | − -e "s,DTV-ISDBT-LAYER[A-C],DTV-ISDBT-LAYER,g" \ | |
| 193 | − -e "s,\(define\s\+\)\([A-Z0-9_]\+\)\(\s\+_IO\),\1\<link linkend=\"\2\">\2\<\/link\>\3,g" \ | |
| 194 | − -e "s,\(define\s\+\)\(DTV_[A-Z0-9_]\+\)\(\s\+\),\1\<link linkend=\"\2\">\2\<\/link\>\3,g" \ | |
| 195 | − -e "s,<link\s\+linkend=\".*\">\(__.*_OLD\)<\/link>,\1,g" \ | |
| 196 | − -e "s/\(linkend\=\"\)FE_SET_PROPERTY/\1FE_GET_PROPERTY/g" \ | |
| 197 | − -e "s,<link\s\+linkend=\".*\">\(DTV_ISDBS_TS_ID_LEGACY\|DTV_MAX_COMMAND\|DTV_IOCTL_MAX_MSGS\)<\/link>,\1,g" \ | |
| 198 | − | |
| 199 | −# | |
| 200 | −# Media targets and dependencies | |
| 201 | −# | |
| 202 | − | |
| 203 | −install_media_images = \ | |
| 204 | − $(Q)if [ "x$(findstring media_api.xml,$(DOCBOOKS))" != "x" ]; then \ | |
| 205 | − mkdir -p $(MEDIA_OBJ_DIR)/media_api; \ | |
| 206 | − cp $(OBJIMGFILES) $(MEDIA_SRC_DIR)/*.svg $(MEDIA_SRC_DIR)/v4l/*.svg $(MEDIA_OBJ_DIR)/media_api; \ | |
| 207 | − fi | |
| 208 | − | |
| 209 | −$(MEDIA_OBJ_DIR)/%: $(MEDIA_SRC_DIR)/%.b64 | |
| 210 | − $(Q)base64 -d $< >$@ | |
| 211 | − | |
| 212 | −$(MEDIA_OBJ_DIR)/v4l2.xml: $(OBJIMGFILES) | |
| 213 | − @$($(quiet)gen_xml) | |
| 214 | − @(ln -sf `cd $(MEDIA_SRC_DIR) && /bin/pwd`/v4l/*xml $(MEDIA_OBJ_DIR)/) | |
| 215 | − @(ln -sf `cd $(MEDIA_SRC_DIR) && /bin/pwd`/dvb/*xml $(MEDIA_OBJ_DIR)/) | |
| 216 | − | |
| 217 | −$(MEDIA_OBJ_DIR)/videodev2.h.xml: $(srctree)/include/uapi/linux/videodev2.h $(MEDIA_OBJ_DIR)/v4l2.xml | |
| 218 | − @$($(quiet)gen_xml) | |
| 219 | − @( \ | |
| 220 | − echo "<programlisting>") > $@ | |
| 221 | − @( \ | |
| 222 | − expand --tabs=8 < $< | \ | |
| 223 | − sed $(ESCAPE) $(DOCUMENTED) | \ | |
| 224 | − sed 's/i\.e\./&ie;/') >> $@ | |
| 225 | − @( \ | |
| 226 | − echo "</programlisting>") >> $@ | |
| 227 | − | |
| 228 | −$(MEDIA_OBJ_DIR)/audio.h.xml: $(srctree)/include/uapi/linux/dvb/audio.h $(MEDIA_OBJ_DIR)/v4l2.xml | |
| 229 | − @$($(quiet)gen_xml) | |
| 230 | − @( \ | |
| 231 | − echo "<programlisting>") > $@ | |
| 232 | − @( \ | |
| 233 | − expand --tabs=8 < $< | \ | |
| 234 | − sed $(ESCAPE) $(DVB_DOCUMENTED) | \ | |
| 235 | − sed 's/i\.e\./&ie;/') >> $@ | |
| 236 | − @( \ | |
| 237 | − echo "</programlisting>") >> $@ | |
| 238 | − | |
| 239 | −$(MEDIA_OBJ_DIR)/ca.h.xml: $(srctree)/include/uapi/linux/dvb/ca.h $(MEDIA_OBJ_DIR)/v4l2.xml | |
| 240 | − @$($(quiet)gen_xml) | |
| 241 | − @( \ | |
| 242 | − echo "<programlisting>") > $@ | |
| 243 | − @( \ | |
| 244 | − expand --tabs=8 < $< | \ | |
| 245 | − sed $(ESCAPE) $(DVB_DOCUMENTED) | \ | |
| 246 | − sed 's/i\.e\./&ie;/') >> $@ | |
| 247 | − @( \ | |
| 248 | − echo "</programlisting>") >> $@ | |
| 249 | − | |
| 250 | −$(MEDIA_OBJ_DIR)/dmx.h.xml: $(srctree)/include/uapi/linux/dvb/dmx.h $(MEDIA_OBJ_DIR)/v4l2.xml | |
| 251 | − @$($(quiet)gen_xml) | |
| 252 | − @( \ | |
| 253 | − echo "<programlisting>") > $@ | |
| 254 | − @( \ | |
| 255 | − for ident in $(ENUM_DEFS) ; do \ | |
| 256 | − entity=`echo $$ident | tr _ -` ; \ | |
| 257 | − r="$$r s/([^\w\-])$$ident([^\w\-])/\1\&$$entity\;\2/g;";\ | |
| 258 | − done; \ | |
| 259 | − expand --tabs=8 < $< | \ | |
| 260 | − sed $(ESCAPE) $(DVB_DOCUMENTED) | \ | |
| 261 | − sed 's/i\.e\./&ie;/' | \ | |
| 262 | − perl -ne "$$r print $$_;") >> $@ | |
| 263 | − @( \ | |
| 264 | − echo "</programlisting>") >> $@ | |
| 265 | − | |
| 266 | −$(MEDIA_OBJ_DIR)/frontend.h.xml: $(srctree)/include/uapi/linux/dvb/frontend.h $(MEDIA_OBJ_DIR)/v4l2.xml | |
| 267 | − @$($(quiet)gen_xml) | |
| 268 | − @( \ | |
| 269 | − echo "<programlisting>") > $@ | |
| 270 | − @( \ | |
| 271 | − for ident in $(ENUM_DEFS) ; do \ | |
| 272 | − entity=`echo $$ident | tr _ -` ; \ | |
| 273 | − r="$$r s/([^\w\-])$$ident([^\w\-])/\1\&$$entity\;\2/g;";\ | |
| 274 | − done; \ | |
| 275 | − expand --tabs=8 < $< | \ | |
| 276 | − sed $(ESCAPE) $(DVB_DOCUMENTED) | \ | |
| 277 | − sed 's/i\.e\./&ie;/' | \ | |
| 278 | − perl -ne "$$r print $$_;") >> $@ | |
| 279 | − @( \ | |
| 280 | − echo "</programlisting>") >> $@ | |
| 281 | − | |
| 282 | −$(MEDIA_OBJ_DIR)/net.h.xml: $(srctree)/include/uapi/linux/dvb/net.h $(MEDIA_OBJ_DIR)/v4l2.xml | |
| 283 | − @$($(quiet)gen_xml) | |
| 284 | − @( \ | |
| 285 | − echo "<programlisting>") > $@ | |
| 286 | − @( \ | |
| 287 | − expand --tabs=8 < $< | \ | |
| 288 | − sed $(ESCAPE) $(DVB_DOCUMENTED) | \ | |
| 289 | − sed 's/i\.e\./&ie;/') >> $@ | |
| 290 | − @( \ | |
| 291 | − echo "</programlisting>") >> $@ | |
| 292 | − | |
| 293 | −$(MEDIA_OBJ_DIR)/video.h.xml: $(srctree)/include/uapi/linux/dvb/video.h $(MEDIA_OBJ_DIR)/v4l2.xml | |
| 294 | − @$($(quiet)gen_xml) | |
| 295 | − @( \ | |
| 296 | − echo "<programlisting>") > $@ | |
| 297 | − @( \ | |
| 298 | − expand --tabs=8 < $< | \ | |
| 299 | − sed $(ESCAPE) $(DVB_DOCUMENTED) | \ | |
| 300 | − sed 's/i\.e\./&ie;/') >> $@ | |
| 301 | − @( \ | |
| 302 | − echo "</programlisting>") >> $@ | |
| 303 | − | |
| 304 | −$(MEDIA_OBJ_DIR)/media-entities.tmpl: $(MEDIA_OBJ_DIR)/v4l2.xml | |
| 305 | − @$($(quiet)gen_xml) | |
| 306 | − @( \ | |
| 307 | − echo "<!-- Generated file! Do not edit. -->") >$@ | |
| 308 | − @( \ | |
| 309 | − echo -e "\n<!-- Functions -->") >>$@ | |
| 310 | − @( \ | |
| 311 | − for ident in $(FUNCS) ; do \ | |
| 312 | − entity=`echo $$ident | tr _ -` ; \ | |
| 313 | − echo "<!ENTITY func-$$entity \"<link" \ | |
| 314 | − "linkend='func-$$entity'><function>$$ident()</function></link>\">" \ | |
| 315 | − >>$@ ; \ | |
| 316 | − done) | |
| 317 | − @( \ | |
| 318 | − echo -e "\n<!-- Ioctls -->") >>$@ | |
| 319 | − @( \ | |
| 320 | − for ident in `echo $(IOCTLS) | sed -e "s,VIDIOC_RESERVED,,"`; do\ | |
| 321 | − entity=`echo $$ident | tr _ -` ; \ | |
| 322 | − id=`grep -e "<refname>$$ident" -e "<section id=\"$$ident\"" $$(find $(MEDIA_SRC_DIR) -name *.xml -type f)| sed -r s,"^.*/(.*).xml.*","\1",` ; \ | |
| 323 | − if [ "$$id" != "" ]; then echo "<!ENTITY $$entity \"<link" \ | |
| 324 | − "linkend='$$id'><constant>$$ident</constant></link>\">" \ | |
| 325 | − >>$@ ; else \ | |
| 326 | − echo "Warning: undocumented ioctl: $$ident. Please document it at the media DocBook!" >&2; \ | |
| 327 | − fi; \ | |
| 328 | − done) | |
| 329 | − @( \ | |
| 330 | − echo -e "\n<!-- Defines -->") >>$@ | |
| 331 | − @( \ | |
| 332 | − for ident in $(DEFINES) ; do \ | |
| 333 | − entity=`echo $$ident | tr _ -` ; \ | |
| 334 | − echo "<!ENTITY $$entity \"<link" \ | |
| 335 | − "linkend='$$entity'><constant>$$ident</constant></link>\">" \ | |
| 336 | − >>$@ ; \ | |
| 337 | − done) | |
| 338 | − @( \ | |
| 339 | − echo -e "\n<!-- Types -->") >>$@ | |
| 340 | − @( \ | |
| 341 | − for ident in $(TYPES) ; do \ | |
| 342 | − entity=`echo $$ident | tr _ -` ; \ | |
| 343 | − echo "<!ENTITY $$entity \"<link" \ | |
| 344 | − "linkend='$$entity'>$$ident</link>\">" >>$@ ; \ | |
| 345 | − done) | |
| 346 | − @( \ | |
| 347 | − echo -e "\n<!-- Enums -->") >>$@ | |
| 348 | − @( \ | |
| 349 | − for ident in $(ENUMS) ; do \ | |
| 350 | − entity=`echo $$ident | sed -e "s/v4l2_mpeg_cx2341x_video_\([a-z]*_spatial_filter_type\)/\1/" | tr _ -` ; \ | |
| 351 | − echo "<!ENTITY $$entity \"enum <link" \ | |
| 352 | − "linkend='$$entity'>$$ident</link>\">" >>$@ ; \ | |
| 353 | − done) | |
| 354 | − @( \ | |
| 355 | − echo -e "\n<!-- Enum definitions -->") >>$@ | |
| 356 | − @( \ | |
| 357 | − for ident in $(ENUM_DEFS) ; do \ | |
| 358 | − entity=`echo $$ident | tr _ -` ; \ | |
| 359 | − echo "<!ENTITY $$entity \"<link" \ | |
| 360 | − "linkend='$$entity'><constant>$$ident</constant></link>\">" \ | |
| 361 | − >>$@ ; \ | |
| 362 | − done) | |
| 363 | − @( \ | |
| 364 | − echo -e "\n<!-- Structures -->") >>$@ | |
| 365 | − @( \ | |
| 366 | − for ident in $(STRUCTS) ; do \ | |
| 367 | − entity=`echo $$ident | tr _ - | sed s/v4l2-mpeg-vbi-ITV0/v4l2-mpeg-vbi-itv0-1/g` ; \ | |
| 368 | − echo "<!ENTITY $$entity \"struct <link" \ | |
| 369 | − "linkend='$$entity'>$$ident</link>\">" >>$@ ; \ | |
| 370 | − done) | |
| 371 | − @( \ | |
| 372 | − echo -e "\n<!-- Error Codes -->") >>$@ | |
| 373 | − @( \ | |
| 374 | − for ident in $(ERRORS) ; do \ | |
| 375 | − echo "<!ENTITY $$ident \"<errorcode>$$ident</errorcode>" \ | |
| 376 | − "error code\">" >>$@ ; \ | |
| 377 | − done) | |
| 378 | − @( \ | |
| 379 | − echo -e "\n<!-- Subsections -->") >>$@ | |
| 380 | − @( \ | |
| 381 | − for file in $(MEDIA_SGMLS) ; do \ | |
| 382 | − entity=`echo "$$file" | sed $(FILENAME) -e s/"^([^-]*)"/sub\1/` ; \ | |
| 383 | − if ! echo "$$file" | \ | |
| 384 | − grep -q -E -e '^(func|vidioc|pixfmt)-' ; then \ | |
| 385 | − echo "<!ENTITY sub-$$entity SYSTEM \"$$file\">" >>$@ ; \ | |
| 386 | − fi ; \ | |
| 387 | − done) | |
| 388 | − @( \ | |
| 389 | − echo -e "\n<!-- Function Reference -->") >>$@ | |
| 390 | − @( \ | |
| 391 | − for file in $(MEDIA_SGMLS) ; do \ | |
| 392 | − if echo "$$file" | \ | |
| 393 | − grep -q -E -e '(func|vidioc|pixfmt)-' ; then \ | |
| 394 | − entity=`echo "$$file" |sed $(FILENAME)` ; \ | |
| 395 | − echo "<!ENTITY $$entity SYSTEM \"$$file\">" >>$@ ; \ | |
| 396 | − fi ; \ | |
| 397 | − done) | |
| 398 | − | |
| 399 | −# Jade can auto-generate a list-of-tables, which includes all structs, | |
| 400 | −# but we only want data types, all types, and sorted please. | |
| 401 | −$(MEDIA_OBJ_DIR)/media-indices.tmpl: $(MEDIA_OBJ_DIR)/v4l2.xml | |
| 402 | − @$($(quiet)gen_xml) | |
| 403 | − @( \ | |
| 404 | − echo "<!-- Generated file! Do not edit. -->") >$@ | |
| 405 | − @( \ | |
| 406 | − echo -e "\n<index><title>List of Types</title>") >>$@ | |
| 407 | − @( \ | |
| 408 | − for ident in $(TYPES) ; do \ | |
| 409 | − id=`echo $$ident | tr _ -` ; \ | |
| 410 | − echo "<indexentry><primaryie><link" \ | |
| 411 | − "linkend='$$id'>$$ident</link></primaryie></indexentry>" >>$@ ; \ | |
| 412 | − done) | |
| 413 | − @( \ | |
| 414 | − for ident in $(ENUMS) ; do \ | |
| 415 | − id=`echo $$ident | sed -e "s/v4l2_mpeg_cx2341x_video_\([a-z]*_spatial_filter_type\)/\1/" | tr _ -`; \ | |
| 416 | − echo "<indexentry><primaryie>enum <link" \ | |
| 417 | − "linkend='$$id'>$$ident</link></primaryie></indexentry>" >>$@ ; \ | |
| 418 | − done) | |
| 419 | − @( \ | |
| 420 | − for ident in $(STRUCTS) ; do \ | |
| 421 | − id=`echo $$ident | tr _ - | sed s/v4l2-mpeg-vbi-ITV0/v4l2-mpeg-vbi-itv0-1/g` ; \ | |
| 422 | − echo "<indexentry><primaryie>struct <link" \ | |
| 423 | − "linkend='$$id'>$$ident</link></primaryie></indexentry>" >>$@ ; \ | |
| 424 | − done) | |
| 425 | − @( \ | |
| 426 | − echo "</index>") >>$@ | |
| 427 | − | |
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| @@ -1 +0,0 @@ | ||
| 1 | −!*.xml | |
| @@ -1,1314 +0,0 @@ | ||
| 1 | −<title>DVB Audio Device</title> | |
| 2 | −<para>The DVB audio device controls the MPEG2 audio decoder of the DVB hardware. It | |
| 3 | −can be accessed through <constant>/dev/dvb/adapter?/audio?</constant>. Data types and and | |
| 4 | −ioctl definitions can be accessed by including <constant>linux/dvb/audio.h</constant> in your | |
| 5 | −application. | |
| 6 | −</para> | |
| 7 | −<para>Please note that some DVB cards don’t have their own MPEG decoder, which results in | |
| 8 | −the omission of the audio and video device. | |
| 9 | −</para> | |
| 10 | −<para> | |
| 11 | −These ioctls were also used by V4L2 to control MPEG decoders implemented in V4L2. The use | |
| 12 | −of these ioctls for that purpose has been made obsolete and proper V4L2 ioctls or controls | |
| 13 | −have been created to replace that functionality.</para> | |
| 14 | − | |
| 15 | −<section id="audio_data_types"> | |
| 16 | −<title>Audio Data Types</title> | |
| 17 | −<para>This section describes the structures, data types and defines used when talking to the | |
| 18 | −audio device. | |
| 19 | −</para> | |
| 20 | − | |
| 21 | −<section id="audio-stream-source-t"> | |
| 22 | −<title>audio_stream_source_t</title> | |
| 23 | −<para>The audio stream source is set through the AUDIO_SELECT_SOURCE call and can take | |
| 24 | −the following values, depending on whether we are replaying from an internal (demux) or | |
| 25 | −external (user write) source. | |
| 26 | −</para> | |
| 27 | −<programlisting> | |
| 28 | −typedef enum { | |
| 29 | − AUDIO_SOURCE_DEMUX, | |
| 30 | − AUDIO_SOURCE_MEMORY | |
| 31 | −} audio_stream_source_t; | |
| 32 | −</programlisting> | |
| 33 | −<para>AUDIO_SOURCE_DEMUX selects the demultiplexer (fed either by the frontend or the | |
| 34 | −DVR device) as the source of the video stream. If AUDIO_SOURCE_MEMORY | |
| 35 | −is selected the stream comes from the application through the <constant>write()</constant> system | |
| 36 | −call. | |
| 37 | −</para> | |
| 38 | − | |
| 39 | −</section> | |
| 40 | −<section id="audio-play-state-t"> | |
| 41 | −<title>audio_play_state_t</title> | |
| 42 | −<para>The following values can be returned by the AUDIO_GET_STATUS call representing the | |
| 43 | −state of audio playback. | |
| 44 | −</para> | |
| 45 | −<programlisting> | |
| 46 | −typedef enum { | |
| 47 | − AUDIO_STOPPED, | |
| 48 | − AUDIO_PLAYING, | |
| 49 | − AUDIO_PAUSED | |
| 50 | −} audio_play_state_t; | |
| 51 | −</programlisting> | |
| 52 | − | |
| 53 | −</section> | |
| 54 | −<section id="audio-channel-select-t"> | |
| 55 | −<title>audio_channel_select_t</title> | |
| 56 | −<para>The audio channel selected via AUDIO_CHANNEL_SELECT is determined by the | |
| 57 | −following values. | |
| 58 | −</para> | |
| 59 | −<programlisting> | |
| 60 | −typedef enum { | |
| 61 | − AUDIO_STEREO, | |
| 62 | − AUDIO_MONO_LEFT, | |
| 63 | − AUDIO_MONO_RIGHT, | |
| 64 | − AUDIO_MONO, | |
| 65 | − AUDIO_STEREO_SWAPPED | |
| 66 | −} audio_channel_select_t; | |
| 67 | −</programlisting> | |
| 68 | − | |
| 69 | −</section> | |
| 70 | −<section id="audio-status"> | |
| 71 | −<title>struct audio_status</title> | |
| 72 | −<para>The AUDIO_GET_STATUS call returns the following structure informing about various | |
| 73 | −states of the playback operation. | |
| 74 | −</para> | |
| 75 | −<programlisting> | |
| 76 | −typedef struct audio_status { | |
| 77 | − boolean AV_sync_state; | |
| 78 | − boolean mute_state; | |
| 79 | − audio_play_state_t play_state; | |
| 80 | − audio_stream_source_t stream_source; | |
| 81 | − audio_channel_select_t channel_select; | |
| 82 | − boolean bypass_mode; | |
| 83 | − audio_mixer_t mixer_state; | |
| 84 | −} audio_status_t; | |
| 85 | −</programlisting> | |
| 86 | − | |
| 87 | −</section> | |
| 88 | −<section id="audio-mixer"> | |
| 89 | −<title>struct audio_mixer</title> | |
| 90 | −<para>The following structure is used by the AUDIO_SET_MIXER call to set the audio | |
| 91 | −volume. | |
| 92 | −</para> | |
| 93 | −<programlisting> | |
| 94 | −typedef struct audio_mixer { | |
| 95 | − unsigned int volume_left; | |
| 96 | − unsigned int volume_right; | |
| 97 | −} audio_mixer_t; | |
| 98 | −</programlisting> | |
| 99 | − | |
| 100 | −</section> | |
| 101 | −<section id="audio_encodings"> | |
| 102 | −<title>audio encodings</title> | |
| 103 | −<para>A call to AUDIO_GET_CAPABILITIES returns an unsigned integer with the following | |
| 104 | −bits set according to the hardwares capabilities. | |
| 105 | −</para> | |
| 106 | −<programlisting> | |
| 107 | − #define AUDIO_CAP_DTS 1 | |
| 108 | − #define AUDIO_CAP_LPCM 2 | |
| 109 | − #define AUDIO_CAP_MP1 4 | |
| 110 | − #define AUDIO_CAP_MP2 8 | |
| 111 | − #define AUDIO_CAP_MP3 16 | |
| 112 | − #define AUDIO_CAP_AAC 32 | |
| 113 | − #define AUDIO_CAP_OGG 64 | |
| 114 | − #define AUDIO_CAP_SDDS 128 | |
| 115 | − #define AUDIO_CAP_AC3 256 | |
| 116 | −</programlisting> | |
| 117 | − | |
| 118 | −</section> | |
| 119 | −<section id="audio-karaoke"> | |
| 120 | −<title>struct audio_karaoke</title> | |
| 121 | −<para>The ioctl AUDIO_SET_KARAOKE uses the following format: | |
| 122 | −</para> | |
| 123 | −<programlisting> | |
| 124 | −typedef | |
| 125 | −struct audio_karaoke { | |
| 126 | − int vocal1; | |
| 127 | − int vocal2; | |
| 128 | − int melody; | |
| 129 | −} audio_karaoke_t; | |
| 130 | −</programlisting> | |
| 131 | −<para>If Vocal1 or Vocal2 are non-zero, they get mixed into left and right t at 70% each. If both, | |
| 132 | −Vocal1 and Vocal2 are non-zero, Vocal1 gets mixed into the left channel and Vocal2 into the | |
| 133 | −right channel at 100% each. Ff Melody is non-zero, the melody channel gets mixed into left | |
| 134 | −and right. | |
| 135 | −</para> | |
| 136 | − | |
| 137 | −</section> | |
| 138 | −<section id="audio-attributes-t"> | |
| 139 | −<title>audio attributes</title> | |
| 140 | −<para>The following attributes can be set by a call to AUDIO_SET_ATTRIBUTES: | |
| 141 | −</para> | |
| 142 | −<programlisting> | |
| 143 | − typedef uint16_t audio_attributes_t; | |
| 144 | − /⋆ bits: descr. ⋆/ | |
| 145 | − /⋆ 15-13 audio coding mode (0=ac3, 2=mpeg1, 3=mpeg2ext, 4=LPCM, 6=DTS, ⋆/ | |
| 146 | − /⋆ 12 multichannel extension ⋆/ | |
| 147 | − /⋆ 11-10 audio type (0=not spec, 1=language included) ⋆/ | |
| 148 | − /⋆ 9- 8 audio application mode (0=not spec, 1=karaoke, 2=surround) ⋆/ | |
| 149 | − /⋆ 7- 6 Quantization / DRC (mpeg audio: 1=DRC exists)(lpcm: 0=16bit, ⋆/ | |
| 150 | − /⋆ 5- 4 Sample frequency fs (0=48kHz, 1=96kHz) ⋆/ | |
| 151 | − /⋆ 2- 0 number of audio channels (n+1 channels) ⋆/ | |
| 152 | −</programlisting> | |
| 153 | − </section></section> | |
| 154 | −<section id="audio_function_calls"> | |
| 155 | −<title>Audio Function Calls</title> | |
| 156 | − | |
| 157 | − | |
| 158 | −<section id="audio_fopen"> | |
| 159 | −<title>open()</title> | |
| 160 | −<para>DESCRIPTION | |
| 161 | −</para> | |
| 162 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 163 | − align="char"> | |
| 164 | −<para>This system call opens a named audio device (e.g. /dev/dvb/adapter0/audio0) | |
| 165 | − for subsequent use. When an open() call has succeeded, the device will be ready | |
| 166 | − for use. The significance of blocking or non-blocking mode is described in the | |
| 167 | − documentation for functions where there is a difference. It does not affect the | |
| 168 | − semantics of the open() call itself. A device opened in blocking mode can later | |
| 169 | − be put into non-blocking mode (and vice versa) using the F_SETFL command | |
| 170 | − of the fcntl system call. This is a standard system call, documented in the Linux | |
| 171 | − manual page for fcntl. Only one user can open the Audio Device in O_RDWR | |
| 172 | − mode. All other attempts to open the device in this mode will fail, and an error | |
| 173 | − code will be returned. If the Audio Device is opened in O_RDONLY mode, the | |
| 174 | − only ioctl call that can be used is AUDIO_GET_STATUS. All other call will | |
| 175 | − return with an error code.</para> | |
| 176 | −</entry> | |
| 177 | − </row></tbody></tgroup></informaltable> | |
| 178 | −<para>SYNOPSIS | |
| 179 | −</para> | |
| 180 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 181 | − align="char"> | |
| 182 | −<para>int open(const char ⋆deviceName, int flags);</para> | |
| 183 | −</entry> | |
| 184 | − </row></tbody></tgroup></informaltable> | |
| 185 | −<para>PARAMETERS | |
| 186 | −</para> | |
| 187 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 188 | − align="char"> | |
| 189 | −<para>const char | |
| 190 | − *deviceName</para> | |
| 191 | −</entry><entry | |
| 192 | − align="char"> | |
| 193 | −<para>Name of specific audio device.</para> | |
| 194 | −</entry> | |
| 195 | − </row><row><entry | |
| 196 | − align="char"> | |
| 197 | −<para>int flags</para> | |
| 198 | −</entry><entry | |
| 199 | − align="char"> | |
| 200 | −<para>A bit-wise OR of the following flags:</para> | |
| 201 | −</entry> | |
| 202 | − </row><row><entry | |
| 203 | − align="char"> | |
| 204 | −</entry><entry | |
| 205 | − align="char"> | |
| 206 | −<para>O_RDONLY read-only access</para> | |
| 207 | −</entry> | |
| 208 | − </row><row><entry | |
| 209 | − align="char"> | |
| 210 | −</entry><entry | |
| 211 | − align="char"> | |
| 212 | −<para>O_RDWR read/write access</para> | |
| 213 | −</entry> | |
| 214 | − </row><row><entry | |
| 215 | − align="char"> | |
| 216 | −</entry><entry | |
| 217 | − align="char"> | |
| 218 | −<para>O_NONBLOCK open in non-blocking mode</para> | |
| 219 | −</entry> | |
| 220 | − </row><row><entry | |
| 221 | − align="char"> | |
| 222 | −</entry><entry | |
| 223 | − align="char"> | |
| 224 | −<para>(blocking mode is the default)</para> | |
| 225 | −</entry> | |
| 226 | − </row></tbody></tgroup></informaltable> | |
| 227 | −<para>RETURN VALUE</para> | |
| 228 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 229 | − align="char"> | |
| 230 | −<para>ENODEV</para> | |
| 231 | −</entry><entry | |
| 232 | − align="char"> | |
| 233 | −<para>Device driver not loaded/available.</para> | |
| 234 | −</entry> | |
| 235 | − </row><row><entry | |
| 236 | − align="char"> | |
| 237 | −<para>EBUSY</para> | |
| 238 | −</entry><entry | |
| 239 | − align="char"> | |
| 240 | −<para>Device or resource busy.</para> | |
| 241 | −</entry> | |
| 242 | − </row><row><entry | |
| 243 | − align="char"> | |
| 244 | −<para>EINVAL</para> | |
| 245 | −</entry><entry | |
| 246 | − align="char"> | |
| 247 | −<para>Invalid argument.</para> | |
| 248 | −</entry> | |
| 249 | − </row></tbody></tgroup></informaltable> | |
| 250 | − | |
| 251 | −</section> | |
| 252 | −<section id="audio_fclose"> | |
| 253 | −<title>close()</title> | |
| 254 | −<para>DESCRIPTION | |
| 255 | −</para> | |
| 256 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 257 | − align="char"> | |
| 258 | −<para>This system call closes a previously opened audio device.</para> | |
| 259 | −</entry> | |
| 260 | − </row></tbody></tgroup></informaltable> | |
| 261 | −<para>SYNOPSIS | |
| 262 | −</para> | |
| 263 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 264 | − align="char"> | |
| 265 | −<para>int close(int fd);</para> | |
| 266 | −</entry> | |
| 267 | − </row></tbody></tgroup></informaltable> | |
| 268 | −<para>PARAMETERS | |
| 269 | −</para> | |
| 270 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 271 | − align="char"> | |
| 272 | −<para>int fd</para> | |
| 273 | −</entry><entry | |
| 274 | − align="char"> | |
| 275 | −<para>File descriptor returned by a previous call to open().</para> | |
| 276 | −</entry> | |
| 277 | − </row></tbody></tgroup></informaltable> | |
| 278 | −<para>RETURN VALUE</para> | |
| 279 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 280 | − align="char"> | |
| 281 | −<para>EBADF</para> | |
| 282 | −</entry><entry | |
| 283 | − align="char"> | |
| 284 | −<para>fd is not a valid open file descriptor.</para> | |
| 285 | −</entry> | |
| 286 | − </row></tbody></tgroup></informaltable> | |
| 287 | − | |
| 288 | −</section> | |
| 289 | −<section id="audio_fwrite"> | |
| 290 | −<title>write()</title> | |
| 291 | −<para>DESCRIPTION | |
| 292 | −</para> | |
| 293 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 294 | − align="char"> | |
| 295 | −<para>This system call can only be used if AUDIO_SOURCE_MEMORY is selected | |
| 296 | − in the ioctl call AUDIO_SELECT_SOURCE. The data provided shall be in | |
| 297 | − PES format. If O_NONBLOCK is not specified the function will block until | |
| 298 | − buffer space is available. The amount of data to be transferred is implied by | |
| 299 | − count.</para> | |
| 300 | −</entry> | |
| 301 | − </row></tbody></tgroup></informaltable> | |
| 302 | −<para>SYNOPSIS | |
| 303 | −</para> | |
| 304 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 305 | − align="char"> | |
| 306 | −<para>size_t write(int fd, const void ⋆buf, size_t count);</para> | |
| 307 | −</entry> | |
| 308 | − </row></tbody></tgroup></informaltable> | |
| 309 | −<para>PARAMETERS | |
| 310 | −</para> | |
| 311 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 312 | − align="char"> | |
| 313 | −<para>int fd</para> | |
| 314 | −</entry><entry | |
| 315 | − align="char"> | |
| 316 | −<para>File descriptor returned by a previous call to open().</para> | |
| 317 | −</entry> | |
| 318 | − </row><row><entry | |
| 319 | − align="char"> | |
| 320 | −<para>void *buf</para> | |
| 321 | −</entry><entry | |
| 322 | − align="char"> | |
| 323 | −<para>Pointer to the buffer containing the PES data.</para> | |
| 324 | −</entry> | |
| 325 | − </row><row><entry | |
| 326 | − align="char"> | |
| 327 | −<para>size_t count</para> | |
| 328 | −</entry><entry | |
| 329 | − align="char"> | |
| 330 | −<para>Size of buf.</para> | |
| 331 | −</entry> | |
| 332 | − </row></tbody></tgroup></informaltable> | |
| 333 | −<para>RETURN VALUE</para> | |
| 334 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 335 | − align="char"> | |
| 336 | −<para>EPERM</para> | |
| 337 | −</entry><entry | |
| 338 | − align="char"> | |
| 339 | −<para>Mode AUDIO_SOURCE_MEMORY not selected.</para> | |
| 340 | −</entry> | |
| 341 | − </row><row><entry | |
| 342 | − align="char"> | |
| 343 | −<para>ENOMEM</para> | |
| 344 | −</entry><entry | |
| 345 | − align="char"> | |
| 346 | −<para>Attempted to write more data than the internal buffer can | |
| 347 | − hold.</para> | |
| 348 | −</entry> | |
| 349 | − </row><row><entry | |
| 350 | − align="char"> | |
| 351 | −<para>EBADF</para> | |
| 352 | −</entry><entry | |
| 353 | − align="char"> | |
| 354 | −<para>fd is not a valid open file descriptor.</para> | |
| 355 | −</entry> | |
| 356 | − </row></tbody></tgroup></informaltable> | |
| 357 | − | |
| 358 | −</section><section id="AUDIO_STOP" | |
| 359 | −role="subsection"><title>AUDIO_STOP</title> | |
| 360 | −<para>DESCRIPTION | |
| 361 | −</para> | |
| 362 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 363 | − align="char"> | |
| 364 | −<para>This ioctl call asks the Audio Device to stop playing the current stream.</para> | |
| 365 | −</entry> | |
| 366 | − </row></tbody></tgroup></informaltable> | |
| 367 | −<para>SYNOPSIS | |
| 368 | −</para> | |
| 369 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 370 | − align="char"> | |
| 371 | −<para>int ioctl(int fd, int request = AUDIO_STOP);</para> | |
| 372 | −</entry> | |
| 373 | − </row></tbody></tgroup></informaltable> | |
| 374 | −<para>PARAMETERS | |
| 375 | −</para> | |
| 376 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 377 | − align="char"> | |
| 378 | −<para>int fd</para> | |
| 379 | −</entry><entry | |
| 380 | − align="char"> | |
| 381 | −<para>File descriptor returned by a previous call to open().</para> | |
| 382 | −</entry> | |
| 383 | − </row><row><entry | |
| 384 | − align="char"> | |
| 385 | −<para>int request</para> | |
| 386 | −</entry><entry | |
| 387 | − align="char"> | |
| 388 | −<para>Equals AUDIO_STOP for this command.</para> | |
| 389 | −</entry> | |
| 390 | − </row></tbody></tgroup></informaltable> | |
| 391 | −&return-value-dvb; | |
| 392 | − | |
| 393 | −</section><section id="AUDIO_PLAY" | |
| 394 | −role="subsection"><title>AUDIO_PLAY</title> | |
| 395 | −<para>DESCRIPTION | |
| 396 | −</para> | |
| 397 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 398 | − align="char"> | |
| 399 | −<para>This ioctl call asks the Audio Device to start playing an audio stream from the | |
| 400 | − selected source.</para> | |
| 401 | −</entry> | |
| 402 | − </row></tbody></tgroup></informaltable> | |
| 403 | −<para>SYNOPSIS | |
| 404 | −</para> | |
| 405 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 406 | − align="char"> | |
| 407 | −<para>int ioctl(int fd, int request = AUDIO_PLAY);</para> | |
| 408 | −</entry> | |
| 409 | − </row></tbody></tgroup></informaltable> | |
| 410 | −<para>PARAMETERS | |
| 411 | −</para> | |
| 412 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 413 | − align="char"> | |
| 414 | −<para>int fd</para> | |
| 415 | −</entry><entry | |
| 416 | − align="char"> | |
| 417 | −<para>File descriptor returned by a previous call to open().</para> | |
| 418 | −</entry> | |
| 419 | − </row><row><entry | |
| 420 | − align="char"> | |
| 421 | −<para>int request</para> | |
| 422 | −</entry><entry | |
| 423 | − align="char"> | |
| 424 | −<para>Equals AUDIO_PLAY for this command.</para> | |
| 425 | −</entry> | |
| 426 | − </row></tbody></tgroup></informaltable> | |
| 427 | −&return-value-dvb; | |
| 428 | − | |
| 429 | −</section><section id="AUDIO_PAUSE" | |
| 430 | −role="subsection"><title>AUDIO_PAUSE</title> | |
| 431 | −<para>DESCRIPTION | |
| 432 | −</para> | |
| 433 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 434 | − align="char"> | |
| 435 | −<para>This ioctl call suspends the audio stream being played. Decoding and playing | |
| 436 | − are paused. It is then possible to restart again decoding and playing process of | |
| 437 | − the audio stream using AUDIO_CONTINUE command.</para> | |
| 438 | −</entry> | |
| 439 | − </row><row><entry | |
| 440 | − align="char"> | |
| 441 | −<para>If AUDIO_SOURCE_MEMORY is selected in the ioctl call | |
| 442 | − AUDIO_SELECT_SOURCE, the DVB-subsystem will not decode (consume) | |
| 443 | − any more data until the ioctl call AUDIO_CONTINUE or AUDIO_PLAY is | |
| 444 | − performed.</para> | |
| 445 | −</entry> | |
| 446 | − </row></tbody></tgroup></informaltable> | |
| 447 | −<para>SYNOPSIS | |
| 448 | −</para> | |
| 449 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 450 | − align="char"> | |
| 451 | −<para>int ioctl(int fd, int request = AUDIO_PAUSE);</para> | |
| 452 | −</entry> | |
| 453 | − </row></tbody></tgroup></informaltable> | |
| 454 | −<para>PARAMETERS | |
| 455 | −</para> | |
| 456 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 457 | − align="char"> | |
| 458 | −<para>int fd</para> | |
| 459 | −</entry><entry | |
| 460 | − align="char"> | |
| 461 | −<para>File descriptor returned by a previous call to open().</para> | |
| 462 | −</entry> | |
| 463 | − </row><row><entry | |
| 464 | − align="char"> | |
| 465 | −<para>int request</para> | |
| 466 | −</entry><entry | |
| 467 | − align="char"> | |
| 468 | −<para>Equals AUDIO_PAUSE for this command.</para> | |
| 469 | −</entry> | |
| 470 | − </row></tbody></tgroup></informaltable> | |
| 471 | −&return-value-dvb; | |
| 472 | − | |
| 473 | −</section><section id="AUDIO_CONTINUE" | |
| 474 | −role="subsection"><title>AUDIO_CONTINUE</title> | |
| 475 | −<para>DESCRIPTION | |
| 476 | −</para> | |
| 477 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 478 | − align="char"> | |
| 479 | −<para>This ioctl restarts the decoding and playing process previously paused | |
| 480 | −with AUDIO_PAUSE command.</para> | |
| 481 | −</entry> | |
| 482 | − </row><row><entry | |
| 483 | − align="char"> | |
| 484 | −<para>It only works if the stream were previously stopped with AUDIO_PAUSE</para> | |
| 485 | −</entry> | |
| 486 | − </row></tbody></tgroup></informaltable> | |
| 487 | −<para>SYNOPSIS | |
| 488 | −</para> | |
| 489 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 490 | − align="char"> | |
| 491 | −<para>int ioctl(int fd, int request = AUDIO_CONTINUE);</para> | |
| 492 | −</entry> | |
| 493 | − </row></tbody></tgroup></informaltable> | |
| 494 | −<para>PARAMETERS | |
| 495 | −</para> | |
| 496 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 497 | − align="char"> | |
| 498 | −<para>int fd</para> | |
| 499 | −</entry><entry | |
| 500 | − align="char"> | |
| 501 | −<para>File descriptor returned by a previous call to open().</para> | |
| 502 | −</entry> | |
| 503 | − </row><row><entry | |
| 504 | − align="char"> | |
| 505 | −<para>int request</para> | |
| 506 | −</entry><entry | |
| 507 | − align="char"> | |
| 508 | −<para>Equals AUDIO_CONTINUE for this command.</para> | |
| 509 | −</entry> | |
| 510 | − </row></tbody></tgroup></informaltable> | |
| 511 | −&return-value-dvb; | |
| 512 | − | |
| 513 | −</section><section id="AUDIO_SELECT_SOURCE" | |
| 514 | −role="subsection"><title>AUDIO_SELECT_SOURCE</title> | |
| 515 | −<para>DESCRIPTION | |
| 516 | −</para> | |
| 517 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 518 | − align="char"> | |
| 519 | −<para>This ioctl call informs the audio device which source shall be used | |
| 520 | − for the input data. The possible sources are demux or memory. If | |
| 521 | − AUDIO_SOURCE_MEMORY is selected, the data is fed to the Audio Device | |
| 522 | − through the write command.</para> | |
| 523 | −</entry> | |
| 524 | − </row></tbody></tgroup></informaltable> | |
| 525 | −<para>SYNOPSIS | |
| 526 | −</para> | |
| 527 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 528 | − align="char"> | |
| 529 | −<para>int ioctl(int fd, int request = AUDIO_SELECT_SOURCE, | |
| 530 | − audio_stream_source_t source);</para> | |
| 531 | −</entry> | |
| 532 | − </row></tbody></tgroup></informaltable> | |
| 533 | −<para>PARAMETERS | |
| 534 | −</para> | |
| 535 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 536 | − align="char"> | |
| 537 | −<para>int fd</para> | |
| 538 | −</entry><entry | |
| 539 | − align="char"> | |
| 540 | −<para>File descriptor returned by a previous call to open().</para> | |
| 541 | −</entry> | |
| 542 | − </row><row><entry | |
| 543 | − align="char"> | |
| 544 | −<para>int request</para> | |
| 545 | −</entry><entry | |
| 546 | − align="char"> | |
| 547 | −<para>Equals AUDIO_SELECT_SOURCE for this command.</para> | |
| 548 | −</entry> | |
| 549 | − </row><row><entry | |
| 550 | − align="char"> | |
| 551 | −<para>audio_stream_source_t | |
| 552 | − source</para> | |
| 553 | −</entry><entry | |
| 554 | − align="char"> | |
| 555 | −<para>Indicates the source that shall be used for the Audio | |
| 556 | − stream.</para> | |
| 557 | −</entry> | |
| 558 | − </row></tbody></tgroup></informaltable> | |
| 559 | −&return-value-dvb; | |
| 560 | − | |
| 561 | −</section><section id="AUDIO_SET_MUTE" | |
| 562 | −role="subsection"><title>AUDIO_SET_MUTE</title> | |
| 563 | −<para>DESCRIPTION | |
| 564 | −</para> | |
| 565 | −<para>This ioctl is for DVB devices only. To control a V4L2 decoder use the V4L2 | |
| 566 | −&VIDIOC-DECODER-CMD; with the <constant>V4L2_DEC_CMD_START_MUTE_AUDIO</constant> flag instead.</para> | |
| 567 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 568 | − align="char"> | |
| 569 | −<para>This ioctl call asks the audio device to mute the stream that is currently being | |
| 570 | − played.</para> | |
| 571 | −</entry> | |
| 572 | − </row></tbody></tgroup></informaltable> | |
| 573 | −<para>SYNOPSIS | |
| 574 | −</para> | |
| 575 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 576 | − align="char"> | |
| 577 | −<para>int ioctl(int fd, int request = AUDIO_SET_MUTE, | |
| 578 | − boolean state);</para> | |
| 579 | −</entry> | |
| 580 | − </row></tbody></tgroup></informaltable> | |
| 581 | −<para>PARAMETERS | |
| 582 | −</para> | |
| 583 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 584 | − align="char"> | |
| 585 | −<para>int fd</para> | |
| 586 | −</entry><entry | |
| 587 | − align="char"> | |
| 588 | −<para>File descriptor returned by a previous call to open().</para> | |
| 589 | −</entry> | |
| 590 | − </row><row><entry | |
| 591 | − align="char"> | |
| 592 | −<para>int request</para> | |
| 593 | −</entry><entry | |
| 594 | − align="char"> | |
| 595 | −<para>Equals AUDIO_SET_MUTE for this command.</para> | |
| 596 | −</entry> | |
| 597 | − </row><row><entry | |
| 598 | − align="char"> | |
| 599 | −<para>boolean state</para> | |
| 600 | −</entry><entry | |
| 601 | − align="char"> | |
| 602 | −<para>Indicates if audio device shall mute or not.</para> | |
| 603 | −</entry> | |
| 604 | − </row><row><entry | |
| 605 | − align="char"> | |
| 606 | −</entry><entry | |
| 607 | − align="char"> | |
| 608 | −<para>TRUE Audio Mute</para> | |
| 609 | −</entry> | |
| 610 | − </row><row><entry | |
| 611 | − align="char"> | |
| 612 | −</entry><entry | |
| 613 | − align="char"> | |
| 614 | −<para>FALSE Audio Un-mute</para> | |
| 615 | −</entry> | |
| 616 | − </row></tbody></tgroup></informaltable> | |
| 617 | −&return-value-dvb; | |
| 618 | − | |
| 619 | −</section><section id="AUDIO_SET_AV_SYNC" | |
| 620 | −role="subsection"><title>AUDIO_SET_AV_SYNC</title> | |
| 621 | −<para>DESCRIPTION | |
| 622 | −</para> | |
| 623 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 624 | − align="char"> | |
| 625 | −<para>This ioctl call asks the Audio Device to turn ON or OFF A/V synchronization.</para> | |
| 626 | −</entry> | |
| 627 | − </row></tbody></tgroup></informaltable> | |
| 628 | −<para>SYNOPSIS | |
| 629 | −</para> | |
| 630 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 631 | − align="char"> | |
| 632 | −<para>int ioctl(int fd, int request = AUDIO_SET_AV_SYNC, | |
| 633 | − boolean state);</para> | |
| 634 | −</entry> | |
| 635 | − </row></tbody></tgroup></informaltable> | |
| 636 | −<para>PARAMETERS | |
| 637 | −</para> | |
| 638 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 639 | − align="char"> | |
| 640 | −<para>int fd</para> | |
| 641 | −</entry><entry | |
| 642 | − align="char"> | |
| 643 | −<para>File descriptor returned by a previous call to open().</para> | |
| 644 | −</entry> | |
| 645 | − </row><row><entry | |
| 646 | − align="char"> | |
| 647 | −<para>int request</para> | |
| 648 | −</entry><entry | |
| 649 | − align="char"> | |
| 650 | −<para>Equals AUDIO_AV_SYNC for this command.</para> | |
| 651 | −</entry> | |
| 652 | − </row><row><entry | |
| 653 | − align="char"> | |
| 654 | −<para>boolean state</para> | |
| 655 | −</entry><entry | |
| 656 | − align="char"> | |
| 657 | −<para>Tells the DVB subsystem if A/V synchronization shall be | |
| 658 | − ON or OFF.</para> | |
| 659 | −</entry> | |
| 660 | − </row><row><entry | |
| 661 | − align="char"> | |
| 662 | −</entry><entry | |
| 663 | − align="char"> | |
| 664 | −<para>TRUE AV-sync ON</para> | |
| 665 | −</entry> | |
| 666 | − </row><row><entry | |
| 667 | − align="char"> | |
| 668 | −</entry><entry | |
| 669 | − align="char"> | |
| 670 | −<para>FALSE AV-sync OFF</para> | |
| 671 | −</entry> | |
| 672 | − </row></tbody></tgroup></informaltable> | |
| 673 | −&return-value-dvb; | |
| 674 | − | |
| 675 | −</section><section id="AUDIO_SET_BYPASS_MODE" | |
| 676 | −role="subsection"><title>AUDIO_SET_BYPASS_MODE</title> | |
| 677 | −<para>DESCRIPTION | |
| 678 | −</para> | |
| 679 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 680 | − align="char"> | |
| 681 | −<para>This ioctl call asks the Audio Device to bypass the Audio decoder and forward | |
| 682 | − the stream without decoding. This mode shall be used if streams that can’t be | |
| 683 | − handled by the DVB system shall be decoded. Dolby DigitalTM streams are | |
| 684 | − automatically forwarded by the DVB subsystem if the hardware can handle it.</para> | |
| 685 | −</entry> | |
| 686 | − </row></tbody></tgroup></informaltable> | |
| 687 | −<para>SYNOPSIS | |
| 688 | −</para> | |
| 689 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 690 | − align="char"> | |
| 691 | −<para>int ioctl(int fd, int request = | |
| 692 | − AUDIO_SET_BYPASS_MODE, boolean mode);</para> | |
| 693 | −</entry> | |
| 694 | − </row></tbody></tgroup></informaltable> | |
| 695 | −<para>PARAMETERS | |
| 696 | −</para> | |
| 697 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 698 | − align="char"> | |
| 699 | −<para>int fd</para> | |
| 700 | −</entry><entry | |
| 701 | − align="char"> | |
| 702 | −<para>File descriptor returned by a previous call to open().</para> | |
| 703 | −</entry> | |
| 704 | − </row><row><entry | |
| 705 | − align="char"> | |
| 706 | −<para>int request</para> | |
| 707 | −</entry><entry | |
| 708 | − align="char"> | |
| 709 | −<para>Equals AUDIO_SET_BYPASS_MODE for this | |
| 710 | − command.</para> | |
| 711 | −</entry> | |
| 712 | − </row><row><entry | |
| 713 | − align="char"> | |
| 714 | −<para>boolean mode</para> | |
| 715 | −</entry><entry | |
| 716 | − align="char"> | |
| 717 | −<para>Enables or disables the decoding of the current Audio | |
| 718 | − stream in the DVB subsystem.</para> | |
| 719 | −</entry> | |
| 720 | − </row><row><entry | |
| 721 | − align="char"> | |
| 722 | −</entry><entry | |
| 723 | − align="char"> | |
| 724 | −<para>TRUE Bypass is disabled</para> | |
| 725 | −</entry> | |
| 726 | − </row><row><entry | |
| 727 | − align="char"> | |
| 728 | −</entry><entry | |
| 729 | − align="char"> | |
| 730 | −<para>FALSE Bypass is enabled</para> | |
| 731 | −</entry> | |
| 732 | − </row></tbody></tgroup></informaltable> | |
| 733 | −&return-value-dvb; | |
| 734 | − | |
| 735 | −</section><section id="AUDIO_CHANNEL_SELECT" | |
| 736 | −role="subsection"><title>AUDIO_CHANNEL_SELECT</title> | |
| 737 | −<para>DESCRIPTION | |
| 738 | −</para> | |
| 739 | −<para>This ioctl is for DVB devices only. To control a V4L2 decoder use the V4L2 | |
| 740 | −<constant>V4L2_CID_MPEG_AUDIO_DEC_PLAYBACK</constant> control instead.</para> | |
| 741 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 742 | − align="char"> | |
| 743 | −<para>This ioctl call asks the Audio Device to select the requested channel if possible.</para> | |
| 744 | −</entry> | |
| 745 | − </row></tbody></tgroup></informaltable> | |
| 746 | −<para>SYNOPSIS | |
| 747 | −</para> | |
| 748 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 749 | − align="char"> | |
| 750 | −<para>int ioctl(int fd, int request = | |
| 751 | − AUDIO_CHANNEL_SELECT, audio_channel_select_t);</para> | |
| 752 | −</entry> | |
| 753 | − </row></tbody></tgroup></informaltable> | |
| 754 | −<para>PARAMETERS | |
| 755 | −</para> | |
| 756 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 757 | − align="char"> | |
| 758 | −<para>int fd</para> | |
| 759 | −</entry><entry | |
| 760 | − align="char"> | |
| 761 | −<para>File descriptor returned by a previous call to open().</para> | |
| 762 | −</entry> | |
| 763 | − </row><row><entry | |
| 764 | − align="char"> | |
| 765 | −<para>int request</para> | |
| 766 | −</entry><entry | |
| 767 | − align="char"> | |
| 768 | −<para>Equals AUDIO_CHANNEL_SELECT for this | |
| 769 | − command.</para> | |
| 770 | −</entry> | |
| 771 | − </row><row><entry | |
| 772 | − align="char"> | |
| 773 | −<para>audio_channel_select_t | |
| 774 | − ch</para> | |
| 775 | −</entry><entry | |
| 776 | − align="char"> | |
| 777 | −<para>Select the output format of the audio (mono left/right, | |
| 778 | − stereo).</para> | |
| 779 | −</entry> | |
| 780 | − </row></tbody></tgroup></informaltable> | |
| 781 | −&return-value-dvb; | |
| 782 | − | |
| 783 | −</section><section id="AUDIO_BILINGUAL_CHANNEL_SELECT" | |
| 784 | −role="subsection"><title>AUDIO_BILINGUAL_CHANNEL_SELECT</title> | |
| 785 | −<para>DESCRIPTION | |
| 786 | −</para> | |
| 787 | −<para>This ioctl is obsolete. Do not use in new drivers. It has been replaced by | |
| 788 | −the V4L2 <constant>V4L2_CID_MPEG_AUDIO_DEC_MULTILINGUAL_PLAYBACK</constant> control | |
| 789 | −for MPEG decoders controlled through V4L2.</para> | |
| 790 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 791 | − align="char"> | |
| 792 | −<para>This ioctl call asks the Audio Device to select the requested channel for bilingual streams if possible.</para> | |
| 793 | −</entry> | |
| 794 | − </row></tbody></tgroup></informaltable> | |
| 795 | −<para>SYNOPSIS | |
| 796 | −</para> | |
| 797 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 798 | − align="char"> | |
| 799 | −<para>int ioctl(int fd, int request = | |
| 800 | − AUDIO_BILINGUAL_CHANNEL_SELECT, audio_channel_select_t);</para> | |
| 801 | −</entry> | |
| 802 | − </row></tbody></tgroup></informaltable> | |
| 803 | −<para>PARAMETERS | |
| 804 | −</para> | |
| 805 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 806 | − align="char"> | |
| 807 | −<para>int fd</para> | |
| 808 | −</entry><entry | |
| 809 | − align="char"> | |
| 810 | −<para>File descriptor returned by a previous call to open().</para> | |
| 811 | −</entry> | |
| 812 | − </row><row><entry | |
| 813 | − align="char"> | |
| 814 | −<para>int request</para> | |
| 815 | −</entry><entry | |
| 816 | − align="char"> | |
| 817 | −<para>Equals AUDIO_BILINGUAL_CHANNEL_SELECT for this | |
| 818 | − command.</para> | |
| 819 | −</entry> | |
| 820 | − </row><row><entry | |
| 821 | − align="char"> | |
| 822 | −<para>audio_channel_select_t | |
| 823 | −ch</para> | |
| 824 | −</entry><entry | |
| 825 | − align="char"> | |
| 826 | −<para>Select the output format of the audio (mono left/right, | |
| 827 | − stereo).</para> | |
| 828 | −</entry> | |
| 829 | − </row> | |
| 830 | −</tbody></tgroup></informaltable> | |
| 831 | −&return-value-dvb; | |
| 832 | − | |
| 833 | −</section><section id="AUDIO_GET_PTS" | |
| 834 | −role="subsection"><title>AUDIO_GET_PTS</title> | |
| 835 | −<para>DESCRIPTION | |
| 836 | −</para> | |
| 837 | −<para>This ioctl is obsolete. Do not use in new drivers. If you need this functionality, | |
| 838 | −then please contact the linux-media mailing list (&v4l-ml;).</para> | |
| 839 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 840 | − align="char"> | |
| 841 | −<para>This ioctl call asks the Audio Device to return the current PTS timestamp.</para> | |
| 842 | −</entry> | |
| 843 | − </row></tbody></tgroup></informaltable> | |
| 844 | −<para>SYNOPSIS | |
| 845 | −</para> | |
| 846 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 847 | − align="char"> | |
| 848 | −<para>int ioctl(int fd, int request = | |
| 849 | − AUDIO_GET_PTS, __u64 *pts);</para> | |
| 850 | −</entry> | |
| 851 | − </row></tbody></tgroup></informaltable> | |
| 852 | −<para>PARAMETERS | |
| 853 | −</para> | |
| 854 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 855 | − align="char"> | |
| 856 | −<para>int fd</para> | |
| 857 | −</entry><entry | |
| 858 | − align="char"> | |
| 859 | −<para>File descriptor returned by a previous call to open().</para> | |
| 860 | −</entry> | |
| 861 | − </row><row><entry | |
| 862 | − align="char"> | |
| 863 | −<para>int request</para> | |
| 864 | −</entry><entry | |
| 865 | − align="char"> | |
| 866 | −<para>Equals AUDIO_GET_PTS for this | |
| 867 | − command.</para> | |
| 868 | −</entry> | |
| 869 | − </row><row><entry | |
| 870 | − align="char"> | |
| 871 | −<para>__u64 *pts | |
| 872 | −</para> | |
| 873 | −</entry><entry | |
| 874 | − align="char"> | |
| 875 | −<para>Returns the 33-bit timestamp as defined in ITU T-REC-H.222.0 / ISO/IEC 13818-1. | |
| 876 | −</para> | |
| 877 | −<para> | |
| 878 | −The PTS should belong to the currently played | |
| 879 | −frame if possible, but may also be a value close to it | |
| 880 | −like the PTS of the last decoded frame or the last PTS | |
| 881 | −extracted by the PES parser.</para> | |
| 882 | −</entry> | |
| 883 | − </row></tbody></tgroup></informaltable> | |
| 884 | −&return-value-dvb; | |
| 885 | − | |
| 886 | −</section><section id="AUDIO_GET_STATUS" | |
| 887 | −role="subsection"><title>AUDIO_GET_STATUS</title> | |
| 888 | −<para>DESCRIPTION | |
| 889 | −</para> | |
| 890 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 891 | − align="char"> | |
| 892 | −<para>This ioctl call asks the Audio Device to return the current state of the Audio | |
| 893 | − Device.</para> | |
| 894 | −</entry> | |
| 895 | − </row></tbody></tgroup></informaltable> | |
| 896 | −<para>SYNOPSIS | |
| 897 | −</para> | |
| 898 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 899 | − align="char"> | |
| 900 | −<para>int ioctl(int fd, int request = AUDIO_GET_STATUS, | |
| 901 | − struct audio_status ⋆status);</para> | |
| 902 | −</entry> | |
| 903 | − </row></tbody></tgroup></informaltable> | |
| 904 | −<para>PARAMETERS | |
| 905 | −</para> | |
| 906 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 907 | − align="char"> | |
| 908 | −<para>int fd</para> | |
| 909 | −</entry><entry | |
| 910 | − align="char"> | |
| 911 | −<para>File descriptor returned by a previous call to open().</para> | |
| 912 | −</entry> | |
| 913 | − </row><row><entry | |
| 914 | − align="char"> | |
| 915 | −<para>int request</para> | |
| 916 | −</entry><entry | |
| 917 | − align="char"> | |
| 918 | −<para>Equals AUDIO_GET_STATUS for this command.</para> | |
| 919 | −</entry> | |
| 920 | − </row><row><entry | |
| 921 | − align="char"> | |
| 922 | −<para>struct audio_status | |
| 923 | − *status</para> | |
| 924 | −</entry><entry | |
| 925 | − align="char"> | |
| 926 | −<para>Returns the current state of Audio Device.</para> | |
| 927 | −</entry> | |
| 928 | − </row></tbody></tgroup></informaltable> | |
| 929 | −&return-value-dvb; | |
| 930 | − | |
| 931 | −</section><section id="AUDIO_GET_CAPABILITIES" | |
| 932 | −role="subsection"><title>AUDIO_GET_CAPABILITIES</title> | |
| 933 | −<para>DESCRIPTION | |
| 934 | −</para> | |
| 935 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 936 | − align="char"> | |
| 937 | −<para>This ioctl call asks the Audio Device to tell us about the decoding capabilities | |
| 938 | − of the audio hardware.</para> | |
| 939 | −</entry> | |
| 940 | − </row></tbody></tgroup></informaltable> | |
| 941 | −<para>SYNOPSIS | |
| 942 | −</para> | |
| 943 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 944 | − align="char"> | |
| 945 | −<para>int ioctl(int fd, int request = | |
| 946 | − AUDIO_GET_CAPABILITIES, unsigned int ⋆cap);</para> | |
| 947 | −</entry> | |
| 948 | − </row></tbody></tgroup></informaltable> | |
| 949 | −<para>PARAMETERS | |
| 950 | −</para> | |
| 951 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 952 | − align="char"> | |
| 953 | −<para>int fd</para> | |
| 954 | −</entry><entry | |
| 955 | − align="char"> | |
| 956 | −<para>File descriptor returned by a previous call to open().</para> | |
| 957 | −</entry> | |
| 958 | − </row><row><entry | |
| 959 | − align="char"> | |
| 960 | −<para>int request</para> | |
| 961 | −</entry><entry | |
| 962 | − align="char"> | |
| 963 | −<para>Equals AUDIO_GET_CAPABILITIES for this | |
| 964 | − command.</para> | |
| 965 | −</entry> | |
| 966 | − </row><row><entry | |
| 967 | − align="char"> | |
| 968 | −<para>unsigned int *cap</para> | |
| 969 | −</entry><entry | |
| 970 | − align="char"> | |
| 971 | −<para>Returns a bit array of supported sound formats.</para> | |
| 972 | −</entry> | |
| 973 | − </row></tbody></tgroup></informaltable> | |
| 974 | −&return-value-dvb; | |
| 975 | − | |
| 976 | −</section><section id="AUDIO_CLEAR_BUFFER" | |
| 977 | −role="subsection"><title>AUDIO_CLEAR_BUFFER</title> | |
| 978 | −<para>DESCRIPTION | |
| 979 | −</para> | |
| 980 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 981 | − align="char"> | |
| 982 | −<para>This ioctl call asks the Audio Device to clear all software and hardware buffers | |
| 983 | − of the audio decoder device.</para> | |
| 984 | −</entry> | |
| 985 | − </row></tbody></tgroup></informaltable> | |
| 986 | −<para>SYNOPSIS | |
| 987 | −</para> | |
| 988 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 989 | − align="char"> | |
| 990 | −<para>int ioctl(int fd, int request = AUDIO_CLEAR_BUFFER);</para> | |
| 991 | −</entry> | |
| 992 | − </row></tbody></tgroup></informaltable> | |
| 993 | −<para>PARAMETERS | |
| 994 | −</para> | |
| 995 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 996 | − align="char"> | |
| 997 | −<para>int fd</para> | |
| 998 | −</entry><entry | |
| 999 | − align="char"> | |
| 1000 | −<para>File descriptor returned by a previous call to open().</para> | |
| 1001 | −</entry> | |
| 1002 | − </row><row><entry | |
| 1003 | − align="char"> | |
| 1004 | −<para>int request</para> | |
| 1005 | −</entry><entry | |
| 1006 | − align="char"> | |
| 1007 | −<para>Equals AUDIO_CLEAR_BUFFER for this command.</para> | |
| 1008 | −</entry> | |
| 1009 | − </row></tbody></tgroup></informaltable> | |
| 1010 | −&return-value-dvb; | |
| 1011 | − | |
| 1012 | −</section><section id="AUDIO_SET_ID" | |
| 1013 | −role="subsection"><title>AUDIO_SET_ID</title> | |
| 1014 | −<para>DESCRIPTION | |
| 1015 | −</para> | |
| 1016 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1017 | − align="char"> | |
| 1018 | −<para>This ioctl selects which sub-stream is to be decoded if a program or system | |
| 1019 | − stream is sent to the video device. If no audio stream type is set the id has to be | |
| 1020 | − in [0xC0,0xDF] for MPEG sound, in [0x80,0x87] for AC3 and in [0xA0,0xA7] | |
| 1021 | − for LPCM. More specifications may follow for other stream types. If the stream | |
| 1022 | − type is set the id just specifies the substream id of the audio stream and only | |
| 1023 | − the first 5 bits are recognized.</para> | |
| 1024 | −</entry> | |
| 1025 | − </row></tbody></tgroup></informaltable> | |
| 1026 | −<para>SYNOPSIS | |
| 1027 | −</para> | |
| 1028 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1029 | − align="char"> | |
| 1030 | −<para>int ioctl(int fd, int request = AUDIO_SET_ID, int | |
| 1031 | − id);</para> | |
| 1032 | −</entry> | |
| 1033 | − </row></tbody></tgroup></informaltable> | |
| 1034 | −<para>PARAMETERS | |
| 1035 | −</para> | |
| 1036 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1037 | − align="char"> | |
| 1038 | −<para>int fd</para> | |
| 1039 | −</entry><entry | |
| 1040 | − align="char"> | |
| 1041 | −<para>File descriptor returned by a previous call to open().</para> | |
| 1042 | −</entry> | |
| 1043 | − </row><row><entry | |
| 1044 | − align="char"> | |
| 1045 | −<para>int request</para> | |
| 1046 | −</entry><entry | |
| 1047 | − align="char"> | |
| 1048 | −<para>Equals AUDIO_SET_ID for this command.</para> | |
| 1049 | −</entry> | |
| 1050 | − </row><row><entry | |
| 1051 | − align="char"> | |
| 1052 | −<para>int id</para> | |
| 1053 | −</entry><entry | |
| 1054 | − align="char"> | |
| 1055 | −<para>audio sub-stream id</para> | |
| 1056 | −</entry> | |
| 1057 | − </row></tbody></tgroup></informaltable> | |
| 1058 | −&return-value-dvb; | |
| 1059 | − | |
| 1060 | −</section><section id="AUDIO_SET_MIXER" | |
| 1061 | −role="subsection"><title>AUDIO_SET_MIXER</title> | |
| 1062 | −<para>DESCRIPTION | |
| 1063 | −</para> | |
| 1064 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1065 | − align="char"> | |
| 1066 | −<para>This ioctl lets you adjust the mixer settings of the audio decoder.</para> | |
| 1067 | −</entry> | |
| 1068 | − </row></tbody></tgroup></informaltable> | |
| 1069 | −<para>SYNOPSIS | |
| 1070 | −</para> | |
| 1071 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1072 | − align="char"> | |
| 1073 | −<para>int ioctl(int fd, int request = AUDIO_SET_MIXER, | |
| 1074 | − audio_mixer_t ⋆mix);</para> | |
| 1075 | −</entry> | |
| 1076 | − </row></tbody></tgroup></informaltable> | |
| 1077 | −<para>PARAMETERS | |
| 1078 | −</para> | |
| 1079 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1080 | − align="char"> | |
| 1081 | −<para>int fd</para> | |
| 1082 | −</entry><entry | |
| 1083 | − align="char"> | |
| 1084 | −<para>File descriptor returned by a previous call to open().</para> | |
| 1085 | −</entry> | |
| 1086 | − </row><row><entry | |
| 1087 | − align="char"> | |
| 1088 | −<para>int request</para> | |
| 1089 | −</entry><entry | |
| 1090 | − align="char"> | |
| 1091 | −<para>Equals AUDIO_SET_ID for this command.</para> | |
| 1092 | −</entry> | |
| 1093 | − </row><row><entry | |
| 1094 | − align="char"> | |
| 1095 | −<para>audio_mixer_t *mix</para> | |
| 1096 | −</entry><entry | |
| 1097 | − align="char"> | |
| 1098 | −<para>mixer settings.</para> | |
| 1099 | −</entry> | |
| 1100 | − </row></tbody></tgroup></informaltable> | |
| 1101 | −&return-value-dvb; | |
| 1102 | − | |
| 1103 | −</section><section id="AUDIO_SET_STREAMTYPE" | |
| 1104 | −role="subsection"><title>AUDIO_SET_STREAMTYPE</title> | |
| 1105 | −<para>DESCRIPTION | |
| 1106 | −</para> | |
| 1107 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1108 | − align="char"> | |
| 1109 | −<para>This ioctl tells the driver which kind of audio stream to expect. This is useful | |
| 1110 | − if the stream offers several audio sub-streams like LPCM and AC3.</para> | |
| 1111 | −</entry> | |
| 1112 | − </row></tbody></tgroup></informaltable> | |
| 1113 | −<para>SYNOPSIS | |
| 1114 | −</para> | |
| 1115 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1116 | − align="char"> | |
| 1117 | −<para>int ioctl(fd, int request = AUDIO_SET_STREAMTYPE, | |
| 1118 | − int type);</para> | |
| 1119 | −</entry> | |
| 1120 | − </row></tbody></tgroup></informaltable> | |
| 1121 | −<para>PARAMETERS | |
| 1122 | −</para> | |
| 1123 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1124 | − align="char"> | |
| 1125 | −<para>int fd</para> | |
| 1126 | −</entry><entry | |
| 1127 | − align="char"> | |
| 1128 | −<para>File descriptor returned by a previous call to open().</para> | |
| 1129 | −</entry> | |
| 1130 | − </row><row><entry | |
| 1131 | − align="char"> | |
| 1132 | −<para>int request</para> | |
| 1133 | −</entry><entry | |
| 1134 | − align="char"> | |
| 1135 | −<para>Equals AUDIO_SET_STREAMTYPE for this | |
| 1136 | − command.</para> | |
| 1137 | −</entry> | |
| 1138 | − </row><row><entry | |
| 1139 | − align="char"> | |
| 1140 | −<para>int type</para> | |
| 1141 | −</entry><entry | |
| 1142 | − align="char"> | |
| 1143 | −<para>stream type</para> | |
| 1144 | −</entry> | |
| 1145 | − </row></tbody></tgroup></informaltable> | |
| 1146 | −&return-value-dvb; | |
| 1147 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1148 | − align="char"> | |
| 1149 | −<para>EINVAL</para> | |
| 1150 | −</entry><entry | |
| 1151 | − align="char"> | |
| 1152 | −<para>type is not a valid or supported stream type.</para> | |
| 1153 | −</entry> | |
| 1154 | − </row></tbody></tgroup></informaltable> | |
| 1155 | − | |
| 1156 | −</section><section id="AUDIO_SET_EXT_ID" | |
| 1157 | −role="subsection"><title>AUDIO_SET_EXT_ID</title> | |
| 1158 | −<para>DESCRIPTION | |
| 1159 | −</para> | |
| 1160 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1161 | − align="char"> | |
| 1162 | −<para>This ioctl can be used to set the extension id for MPEG streams in DVD | |
| 1163 | − playback. Only the first 3 bits are recognized.</para> | |
| 1164 | −</entry> | |
| 1165 | − </row></tbody></tgroup></informaltable> | |
| 1166 | −<para>SYNOPSIS | |
| 1167 | −</para> | |
| 1168 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1169 | − align="char"> | |
| 1170 | −<para>int ioctl(fd, int request = AUDIO_SET_EXT_ID, int | |
| 1171 | − id);</para> | |
| 1172 | −</entry> | |
| 1173 | − </row></tbody></tgroup></informaltable> | |
| 1174 | −<para>PARAMETERS | |
| 1175 | −</para> | |
| 1176 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1177 | − align="char"> | |
| 1178 | −<para>int fd</para> | |
| 1179 | −</entry><entry | |
| 1180 | − align="char"> | |
| 1181 | −<para>File descriptor returned by a previous call to open().</para> | |
| 1182 | −</entry> | |
| 1183 | − </row><row><entry | |
| 1184 | − align="char"> | |
| 1185 | −<para>int request</para> | |
| 1186 | −</entry><entry | |
| 1187 | − align="char"> | |
| 1188 | −<para>Equals AUDIO_SET_EXT_ID for this command.</para> | |
| 1189 | −</entry> | |
| 1190 | − </row><row><entry | |
| 1191 | − align="char"> | |
| 1192 | −<para>int id</para> | |
| 1193 | −</entry><entry | |
| 1194 | − align="char"> | |
| 1195 | −<para>audio sub_stream_id</para> | |
| 1196 | −</entry> | |
| 1197 | − </row></tbody></tgroup></informaltable> | |
| 1198 | −&return-value-dvb; | |
| 1199 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1200 | − align="char"> | |
| 1201 | −<para>EINVAL</para> | |
| 1202 | −</entry><entry | |
| 1203 | − align="char"> | |
| 1204 | −<para>id is not a valid id.</para> | |
| 1205 | −</entry> | |
| 1206 | − </row></tbody></tgroup></informaltable> | |
| 1207 | − | |
| 1208 | −</section><section id="AUDIO_SET_ATTRIBUTES" | |
| 1209 | −role="subsection"><title>AUDIO_SET_ATTRIBUTES</title> | |
| 1210 | −<para>DESCRIPTION | |
| 1211 | −</para> | |
| 1212 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1213 | − align="char"> | |
| 1214 | −<para>This ioctl is intended for DVD playback and allows you to set certain | |
| 1215 | − information about the audio stream.</para> | |
| 1216 | −</entry> | |
| 1217 | − </row></tbody></tgroup></informaltable> | |
| 1218 | −<para>SYNOPSIS | |
| 1219 | −</para> | |
| 1220 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1221 | − align="char"> | |
| 1222 | −<para>int ioctl(fd, int request = AUDIO_SET_ATTRIBUTES, | |
| 1223 | − audio_attributes_t attr );</para> | |
| 1224 | −</entry> | |
| 1225 | − </row></tbody></tgroup></informaltable> | |
| 1226 | −<para>PARAMETERS | |
| 1227 | −</para> | |
| 1228 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1229 | − align="char"> | |
| 1230 | −<para>int fd</para> | |
| 1231 | −</entry><entry | |
| 1232 | − align="char"> | |
| 1233 | −<para>File descriptor returned by a previous call to open().</para> | |
| 1234 | −</entry> | |
| 1235 | − </row><row><entry | |
| 1236 | − align="char"> | |
| 1237 | −<para>int request</para> | |
| 1238 | −</entry><entry | |
| 1239 | − align="char"> | |
| 1240 | −<para>Equals AUDIO_SET_ATTRIBUTES for this command.</para> | |
| 1241 | −</entry> | |
| 1242 | − </row><row><entry | |
| 1243 | − align="char"> | |
| 1244 | −<para>audio_attributes_t | |
| 1245 | − attr</para> | |
| 1246 | −</entry><entry | |
| 1247 | − align="char"> | |
| 1248 | −<para>audio attributes according to section ??</para> | |
| 1249 | −</entry> | |
| 1250 | − </row></tbody></tgroup></informaltable> | |
| 1251 | −&return-value-dvb; | |
| 1252 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1253 | − align="char"> | |
| 1254 | −<para>EINVAL</para> | |
| 1255 | −</entry><entry | |
| 1256 | − align="char"> | |
| 1257 | −<para>attr is not a valid or supported attribute setting.</para> | |
| 1258 | −</entry> | |
| 1259 | − </row></tbody></tgroup></informaltable> | |
| 1260 | − | |
| 1261 | −</section><section id="AUDIO_SET_KARAOKE" | |
| 1262 | −role="subsection"><title>AUDIO_SET_KARAOKE</title> | |
| 1263 | −<para>DESCRIPTION | |
| 1264 | −</para> | |
| 1265 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1266 | − align="char"> | |
| 1267 | −<para>This ioctl allows one to set the mixer settings for a karaoke DVD.</para> | |
| 1268 | −</entry> | |
| 1269 | − </row></tbody></tgroup></informaltable> | |
| 1270 | −<para>SYNOPSIS | |
| 1271 | −</para> | |
| 1272 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1273 | − align="char"> | |
| 1274 | −<para>int ioctl(fd, int request = AUDIO_SET_KARAOKE, | |
| 1275 | − audio_karaoke_t ⋆karaoke);</para> | |
| 1276 | −</entry> | |
| 1277 | − </row></tbody></tgroup></informaltable> | |
| 1278 | −<para>PARAMETERS | |
| 1279 | −</para> | |
| 1280 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1281 | − align="char"> | |
| 1282 | −<para>int fd</para> | |
| 1283 | −</entry><entry | |
| 1284 | − align="char"> | |
| 1285 | −<para>File descriptor returned by a previous call to open().</para> | |
| 1286 | −</entry> | |
| 1287 | − </row><row><entry | |
| 1288 | − align="char"> | |
| 1289 | −<para>int request</para> | |
| 1290 | −</entry><entry | |
| 1291 | − align="char"> | |
| 1292 | −<para>Equals AUDIO_SET_KARAOKE for this | |
| 1293 | − command.</para> | |
| 1294 | −</entry> | |
| 1295 | − </row><row><entry | |
| 1296 | − align="char"> | |
| 1297 | −<para>audio_karaoke_t | |
| 1298 | − *karaoke</para> | |
| 1299 | −</entry><entry | |
| 1300 | − align="char"> | |
| 1301 | −<para>karaoke settings according to section ??.</para> | |
| 1302 | −</entry> | |
| 1303 | − </row></tbody></tgroup></informaltable> | |
| 1304 | −&return-value-dvb; | |
| 1305 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1306 | − align="char"> | |
| 1307 | −<para>EINVAL</para> | |
| 1308 | −</entry><entry | |
| 1309 | − align="char"> | |
| 1310 | −<para>karaoke is not a valid or supported karaoke setting.</para> | |
| 1311 | −</entry> | |
| 1312 | − </row></tbody></tgroup></informaltable> | |
| 1313 | − </section> | |
| 1314 | −</section> | |
| @@ -1,582 +0,0 @@ | ||
| 1 | −<title>DVB CA Device</title> | |
| 2 | −<para>The DVB CA device controls the conditional access hardware. It can be accessed through | |
| 3 | −<constant>/dev/dvb/adapter?/ca?</constant>. Data types and and ioctl definitions can be accessed by | |
| 4 | −including <constant>linux/dvb/ca.h</constant> in your application. | |
| 5 | −</para> | |
| 6 | − | |
| 7 | −<section id="ca_data_types"> | |
| 8 | −<title>CA Data Types</title> | |
| 9 | − | |
| 10 | − | |
| 11 | −<section id="ca-slot-info"> | |
| 12 | −<title>ca_slot_info_t</title> | |
| 13 | − <programlisting> | |
| 14 | −typedef struct ca_slot_info { | |
| 15 | − int num; /⋆ slot number ⋆/ | |
| 16 | − | |
| 17 | − int type; /⋆ CA interface this slot supports ⋆/ | |
| 18 | −#define CA_CI 1 /⋆ CI high level interface ⋆/ | |
| 19 | −#define CA_CI_LINK 2 /⋆ CI link layer level interface ⋆/ | |
| 20 | −#define CA_CI_PHYS 4 /⋆ CI physical layer level interface ⋆/ | |
| 21 | −#define CA_DESCR 8 /⋆ built-in descrambler ⋆/ | |
| 22 | −#define CA_SC 128 /⋆ simple smart card interface ⋆/ | |
| 23 | − | |
| 24 | − unsigned int flags; | |
| 25 | −#define CA_CI_MODULE_PRESENT 1 /⋆ module (or card) inserted ⋆/ | |
| 26 | −#define CA_CI_MODULE_READY 2 | |
| 27 | −} ca_slot_info_t; | |
| 28 | −</programlisting> | |
| 29 | − | |
| 30 | −</section> | |
| 31 | −<section id="ca-descr-info"> | |
| 32 | −<title>ca_descr_info_t</title> | |
| 33 | −<programlisting> | |
| 34 | −typedef struct ca_descr_info { | |
| 35 | − unsigned int num; /⋆ number of available descramblers (keys) ⋆/ | |
| 36 | − unsigned int type; /⋆ type of supported scrambling system ⋆/ | |
| 37 | −#define CA_ECD 1 | |
| 38 | −#define CA_NDS 2 | |
| 39 | −#define CA_DSS 4 | |
| 40 | −} ca_descr_info_t; | |
| 41 | −</programlisting> | |
| 42 | − | |
| 43 | −</section> | |
| 44 | −<section id="ca-caps"> | |
| 45 | −<title>ca_caps_t</title> | |
| 46 | −<programlisting> | |
| 47 | −typedef struct ca_caps { | |
| 48 | − unsigned int slot_num; /⋆ total number of CA card and module slots ⋆/ | |
| 49 | − unsigned int slot_type; /⋆ OR of all supported types ⋆/ | |
| 50 | − unsigned int descr_num; /⋆ total number of descrambler slots (keys) ⋆/ | |
| 51 | − unsigned int descr_type;/⋆ OR of all supported types ⋆/ | |
| 52 | − } ca_cap_t; | |
| 53 | −</programlisting> | |
| 54 | − | |
| 55 | −</section> | |
| 56 | −<section id="ca-msg"> | |
| 57 | −<title>ca_msg_t</title> | |
| 58 | −<programlisting> | |
| 59 | −/⋆ a message to/from a CI-CAM ⋆/ | |
| 60 | −typedef struct ca_msg { | |
| 61 | − unsigned int index; | |
| 62 | − unsigned int type; | |
| 63 | − unsigned int length; | |
| 64 | − unsigned char msg[256]; | |
| 65 | −} ca_msg_t; | |
| 66 | −</programlisting> | |
| 67 | − | |
| 68 | −</section> | |
| 69 | −<section id="ca-descr"> | |
| 70 | −<title>ca_descr_t</title> | |
| 71 | −<programlisting> | |
| 72 | −typedef struct ca_descr { | |
| 73 | − unsigned int index; | |
| 74 | − unsigned int parity; | |
| 75 | − unsigned char cw[8]; | |
| 76 | −} ca_descr_t; | |
| 77 | −</programlisting> | |
| 78 | −</section> | |
| 79 | − | |
| 80 | −<section id="ca-pid"> | |
| 81 | −<title>ca-pid</title> | |
| 82 | −<programlisting> | |
| 83 | −typedef struct ca_pid { | |
| 84 | − unsigned int pid; | |
| 85 | − int index; /⋆ -1 == disable⋆/ | |
| 86 | −} ca_pid_t; | |
| 87 | −</programlisting> | |
| 88 | −</section></section> | |
| 89 | − | |
| 90 | −<section id="ca_function_calls"> | |
| 91 | −<title>CA Function Calls</title> | |
| 92 | − | |
| 93 | − | |
| 94 | −<section id="ca_fopen"> | |
| 95 | −<title>open()</title> | |
| 96 | −<para>DESCRIPTION | |
| 97 | −</para> | |
| 98 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 99 | − align="char"> | |
| 100 | −<para>This system call opens a named ca device (e.g. /dev/ost/ca) for subsequent use.</para> | |
| 101 | −<para>When an open() call has succeeded, the device will be ready for use. | |
| 102 | − The significance of blocking or non-blocking mode is described in the | |
| 103 | − documentation for functions where there is a difference. It does not affect the | |
| 104 | − semantics of the open() call itself. A device opened in blocking mode can later | |
| 105 | − be put into non-blocking mode (and vice versa) using the F_SETFL command | |
| 106 | − of the fcntl system call. This is a standard system call, documented in the Linux | |
| 107 | − manual page for fcntl. Only one user can open the CA Device in O_RDWR | |
| 108 | − mode. All other attempts to open the device in this mode will fail, and an error | |
| 109 | − code will be returned.</para> | |
| 110 | −</entry> | |
| 111 | − </row></tbody></tgroup></informaltable> | |
| 112 | −<para>SYNOPSIS | |
| 113 | −</para> | |
| 114 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 115 | − align="char"> | |
| 116 | −<para>int open(const char ⋆deviceName, int flags);</para> | |
| 117 | −</entry> | |
| 118 | − </row></tbody></tgroup></informaltable> | |
| 119 | −<para>PARAMETERS | |
| 120 | −</para> | |
| 121 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 122 | − align="char"> | |
| 123 | −<para>const char | |
| 124 | − *deviceName</para> | |
| 125 | −</entry><entry | |
| 126 | − align="char"> | |
| 127 | −<para>Name of specific video device.</para> | |
| 128 | −</entry> | |
| 129 | − </row><row><entry | |
| 130 | − align="char"> | |
| 131 | −<para>int flags</para> | |
| 132 | −</entry><entry | |
| 133 | − align="char"> | |
| 134 | −<para>A bit-wise OR of the following flags:</para> | |
| 135 | −</entry> | |
| 136 | − </row><row><entry | |
| 137 | − align="char"> | |
| 138 | −</entry><entry | |
| 139 | − align="char"> | |
| 140 | −<para>O_RDONLY read-only access</para> | |
| 141 | −</entry> | |
| 142 | − </row><row><entry | |
| 143 | − align="char"> | |
| 144 | −</entry><entry | |
| 145 | − align="char"> | |
| 146 | −<para>O_RDWR read/write access</para> | |
| 147 | −</entry> | |
| 148 | − </row><row><entry | |
| 149 | − align="char"> | |
| 150 | −</entry><entry | |
| 151 | − align="char"> | |
| 152 | −<para>O_NONBLOCK open in non-blocking mode</para> | |
| 153 | −</entry> | |
| 154 | − </row><row><entry | |
| 155 | − align="char"> | |
| 156 | −</entry><entry | |
| 157 | − align="char"> | |
| 158 | −<para>(blocking mode is the default)</para> | |
| 159 | −</entry> | |
| 160 | − </row></tbody></tgroup></informaltable> | |
| 161 | −<para>RETURN VALUE</para> | |
| 162 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 163 | − align="char"> | |
| 164 | −<para>ENODEV</para> | |
| 165 | −</entry><entry | |
| 166 | − align="char"> | |
| 167 | −<para>Device driver not loaded/available.</para> | |
| 168 | −</entry> | |
| 169 | − </row><row><entry | |
| 170 | − align="char"> | |
| 171 | −<para>EINTERNAL</para> | |
| 172 | −</entry><entry | |
| 173 | − align="char"> | |
| 174 | −<para>Internal error.</para> | |
| 175 | −</entry> | |
| 176 | − </row><row><entry | |
| 177 | − align="char"> | |
| 178 | −<para>EBUSY</para> | |
| 179 | −</entry><entry | |
| 180 | − align="char"> | |
| 181 | −<para>Device or resource busy.</para> | |
| 182 | −</entry> | |
| 183 | − </row><row><entry | |
| 184 | − align="char"> | |
| 185 | −<para>EINVAL</para> | |
| 186 | −</entry><entry | |
| 187 | − align="char"> | |
| 188 | −<para>Invalid argument.</para> | |
| 189 | −</entry> | |
| 190 | − </row></tbody></tgroup></informaltable> | |
| 191 | − | |
| 192 | −</section> | |
| 193 | −<section id="ca_fclose"> | |
| 194 | −<title>close()</title> | |
| 195 | −<para>DESCRIPTION | |
| 196 | −</para> | |
| 197 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 198 | − align="char"> | |
| 199 | −<para>This system call closes a previously opened audio device.</para> | |
| 200 | −</entry> | |
| 201 | − </row></tbody></tgroup></informaltable> | |
| 202 | −<para>SYNOPSIS | |
| 203 | −</para> | |
| 204 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 205 | − align="char"> | |
| 206 | −<para>int close(int fd);</para> | |
| 207 | −</entry> | |
| 208 | − </row></tbody></tgroup></informaltable> | |
| 209 | −<para>PARAMETERS | |
| 210 | −</para> | |
| 211 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 212 | − align="char"> | |
| 213 | −<para>int fd</para> | |
| 214 | −</entry><entry | |
| 215 | − align="char"> | |
| 216 | −<para>File descriptor returned by a previous call to open().</para> | |
| 217 | −</entry> | |
| 218 | − </row></tbody></tgroup></informaltable> | |
| 219 | −<para>RETURN VALUE</para> | |
| 220 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 221 | − align="char"> | |
| 222 | −<para>EBADF</para> | |
| 223 | −</entry><entry | |
| 224 | − align="char"> | |
| 225 | −<para>fd is not a valid open file descriptor.</para> | |
| 226 | −</entry> | |
| 227 | − </row></tbody></tgroup></informaltable> | |
| 228 | − </section> | |
| 229 | − | |
| 230 | −<section id="CA_RESET" | |
| 231 | −role="subsection"><title>CA_RESET</title> | |
| 232 | −<para>DESCRIPTION | |
| 233 | −</para> | |
| 234 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 235 | − align="char"> | |
| 236 | −<para>This ioctl is undocumented. Documentation is welcome.</para> | |
| 237 | −</entry> | |
| 238 | − </row></tbody></tgroup></informaltable> | |
| 239 | −<para>SYNOPSIS | |
| 240 | −</para> | |
| 241 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 242 | − align="char"> | |
| 243 | −<para>int ioctl(fd, int request = CA_RESET); | |
| 244 | −</para> | |
| 245 | −</entry> | |
| 246 | − </row></tbody></tgroup></informaltable> | |
| 247 | −<para>PARAMETERS | |
| 248 | −</para> | |
| 249 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 250 | − align="char"> | |
| 251 | −<para>int fd</para> | |
| 252 | −</entry><entry | |
| 253 | − align="char"> | |
| 254 | −<para>File descriptor returned by a previous call to open().</para> | |
| 255 | −</entry> | |
| 256 | − </row><row><entry | |
| 257 | − align="char"> | |
| 258 | −<para>int request</para> | |
| 259 | −</entry><entry | |
| 260 | − align="char"> | |
| 261 | −<para>Equals CA_RESET for this command.</para> | |
| 262 | −</entry> | |
| 263 | − </row></tbody></tgroup></informaltable> | |
| 264 | −&return-value-dvb; | |
| 265 | −</section> | |
| 266 | − | |
| 267 | −<section id="CA_GET_CAP" | |
| 268 | −role="subsection"><title>CA_GET_CAP</title> | |
| 269 | −<para>DESCRIPTION | |
| 270 | −</para> | |
| 271 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 272 | − align="char"> | |
| 273 | −<para>This ioctl is undocumented. Documentation is welcome.</para> | |
| 274 | −</entry> | |
| 275 | − </row></tbody></tgroup></informaltable> | |
| 276 | −<para>SYNOPSIS | |
| 277 | −</para> | |
| 278 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 279 | − align="char"> | |
| 280 | −<para>int ioctl(fd, int request = CA_GET_CAP, | |
| 281 | − ca_caps_t *);</para> | |
| 282 | −</entry> | |
| 283 | − </row></tbody></tgroup></informaltable> | |
| 284 | −<para>PARAMETERS | |
| 285 | −</para> | |
| 286 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 287 | − align="char"> | |
| 288 | −<para>int fd</para> | |
| 289 | −</entry><entry | |
| 290 | − align="char"> | |
| 291 | −<para>File descriptor returned by a previous call to open().</para> | |
| 292 | −</entry> | |
| 293 | − </row><row><entry | |
| 294 | − align="char"> | |
| 295 | −<para>int request</para> | |
| 296 | −</entry><entry | |
| 297 | − align="char"> | |
| 298 | −<para>Equals CA_GET_CAP for this command.</para> | |
| 299 | −</entry> | |
| 300 | − </row><row><entry | |
| 301 | − align="char"> | |
| 302 | −<para>ca_caps_t * | |
| 303 | −</para> | |
| 304 | −</entry><entry | |
| 305 | − align="char"> | |
| 306 | −<para>Undocumented.</para> | |
| 307 | −</entry> | |
| 308 | − </row></tbody></tgroup></informaltable> | |
| 309 | −&return-value-dvb; | |
| 310 | −</section> | |
| 311 | − | |
| 312 | −<section id="CA_GET_SLOT_INFO" | |
| 313 | −role="subsection"><title>CA_GET_SLOT_INFO</title> | |
| 314 | −<para>DESCRIPTION | |
| 315 | −</para> | |
| 316 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 317 | − align="char"> | |
| 318 | −<para>This ioctl is undocumented. Documentation is welcome.</para> | |
| 319 | −</entry> | |
| 320 | − </row></tbody></tgroup></informaltable> | |
| 321 | −<para>SYNOPSIS | |
| 322 | −</para> | |
| 323 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 324 | − align="char"> | |
| 325 | −<para>int ioctl(fd, int request = CA_GET_SLOT_INFO, | |
| 326 | − ca_slot_info_t *);</para> | |
| 327 | −</entry> | |
| 328 | − </row></tbody></tgroup></informaltable> | |
| 329 | −<para>PARAMETERS | |
| 330 | −</para> | |
| 331 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 332 | − align="char"> | |
| 333 | −<para>int fd</para> | |
| 334 | −</entry><entry | |
| 335 | − align="char"> | |
| 336 | −<para>File descriptor returned by a previous call to open().</para> | |
| 337 | −</entry> | |
| 338 | − </row><row><entry | |
| 339 | − align="char"> | |
| 340 | −<para>int request</para> | |
| 341 | −</entry><entry | |
| 342 | − align="char"> | |
| 343 | −<para>Equals CA_GET_SLOT_INFO for this command.</para> | |
| 344 | −</entry> | |
| 345 | − </row><row><entry | |
| 346 | − align="char"> | |
| 347 | −<para>ca_slot_info_t * | |
| 348 | −</para> | |
| 349 | −</entry><entry | |
| 350 | − align="char"> | |
| 351 | −<para>Undocumented.</para> | |
| 352 | −</entry> | |
| 353 | − </row></tbody></tgroup></informaltable> | |
| 354 | −&return-value-dvb; | |
| 355 | −</section> | |
| 356 | − | |
| 357 | −<section id="CA_GET_DESCR_INFO" | |
| 358 | −role="subsection"><title>CA_GET_DESCR_INFO</title> | |
| 359 | −<para>DESCRIPTION | |
| 360 | −</para> | |
| 361 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 362 | − align="char"> | |
| 363 | −<para>This ioctl is undocumented. Documentation is welcome.</para> | |
| 364 | −</entry> | |
| 365 | − </row></tbody></tgroup></informaltable> | |
| 366 | −<para>SYNOPSIS | |
| 367 | −</para> | |
| 368 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 369 | − align="char"> | |
| 370 | −<para>int ioctl(fd, int request = CA_GET_DESCR_INFO, | |
| 371 | − ca_descr_info_t *);</para> | |
| 372 | −</entry> | |
| 373 | − </row></tbody></tgroup></informaltable> | |
| 374 | −<para>PARAMETERS | |
| 375 | −</para> | |
| 376 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 377 | − align="char"> | |
| 378 | −<para>int fd</para> | |
| 379 | −</entry><entry | |
| 380 | − align="char"> | |
| 381 | −<para>File descriptor returned by a previous call to open().</para> | |
| 382 | −</entry> | |
| 383 | − </row><row><entry | |
| 384 | − align="char"> | |
| 385 | −<para>int request</para> | |
| 386 | −</entry><entry | |
| 387 | − align="char"> | |
| 388 | −<para>Equals CA_GET_DESCR_INFO for this command.</para> | |
| 389 | −</entry> | |
| 390 | − </row><row><entry | |
| 391 | − align="char"> | |
| 392 | −<para>ca_descr_info_t * | |
| 393 | −</para> | |
| 394 | −</entry><entry | |
| 395 | − align="char"> | |
| 396 | −<para>Undocumented.</para> | |
| 397 | −</entry> | |
| 398 | − </row></tbody></tgroup></informaltable> | |
| 399 | −&return-value-dvb; | |
| 400 | −</section> | |
| 401 | − | |
| 402 | −<section id="CA_GET_MSG" | |
| 403 | −role="subsection"><title>CA_GET_MSG</title> | |
| 404 | −<para>DESCRIPTION | |
| 405 | −</para> | |
| 406 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 407 | − align="char"> | |
| 408 | −<para>This ioctl is undocumented. Documentation is welcome.</para> | |
| 409 | −</entry> | |
| 410 | − </row></tbody></tgroup></informaltable> | |
| 411 | −<para>SYNOPSIS | |
| 412 | −</para> | |
| 413 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 414 | − align="char"> | |
| 415 | −<para>int ioctl(fd, int request = CA_GET_MSG, | |
| 416 | − ca_msg_t *);</para> | |
| 417 | −</entry> | |
| 418 | − </row></tbody></tgroup></informaltable> | |
| 419 | −<para>PARAMETERS | |
| 420 | −</para> | |
| 421 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 422 | − align="char"> | |
| 423 | −<para>int fd</para> | |
| 424 | −</entry><entry | |
| 425 | − align="char"> | |
| 426 | −<para>File descriptor returned by a previous call to open().</para> | |
| 427 | −</entry> | |
| 428 | − </row><row><entry | |
| 429 | − align="char"> | |
| 430 | −<para>int request</para> | |
| 431 | −</entry><entry | |
| 432 | − align="char"> | |
| 433 | −<para>Equals CA_GET_MSG for this command.</para> | |
| 434 | −</entry> | |
| 435 | − </row><row><entry | |
| 436 | − align="char"> | |
| 437 | −<para>ca_msg_t * | |
| 438 | −</para> | |
| 439 | −</entry><entry | |
| 440 | − align="char"> | |
| 441 | −<para>Undocumented.</para> | |
| 442 | −</entry> | |
| 443 | − </row></tbody></tgroup></informaltable> | |
| 444 | −&return-value-dvb; | |
| 445 | −</section> | |
| 446 | − | |
| 447 | −<section id="CA_SEND_MSG" | |
| 448 | −role="subsection"><title>CA_SEND_MSG</title> | |
| 449 | −<para>DESCRIPTION | |
| 450 | −</para> | |
| 451 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 452 | − align="char"> | |
| 453 | −<para>This ioctl is undocumented. Documentation is welcome.</para> | |
| 454 | −</entry> | |
| 455 | − </row></tbody></tgroup></informaltable> | |
| 456 | −<para>SYNOPSIS | |
| 457 | −</para> | |
| 458 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 459 | − align="char"> | |
| 460 | −<para>int ioctl(fd, int request = CA_SEND_MSG, | |
| 461 | − ca_msg_t *);</para> | |
| 462 | −</entry> | |
| 463 | − </row></tbody></tgroup></informaltable> | |
| 464 | −<para>PARAMETERS | |
| 465 | −</para> | |
| 466 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 467 | − align="char"> | |
| 468 | −<para>int fd</para> | |
| 469 | −</entry><entry | |
| 470 | − align="char"> | |
| 471 | −<para>File descriptor returned by a previous call to open().</para> | |
| 472 | −</entry> | |
| 473 | − </row><row><entry | |
| 474 | − align="char"> | |
| 475 | −<para>int request</para> | |
| 476 | −</entry><entry | |
| 477 | − align="char"> | |
| 478 | −<para>Equals CA_SEND_MSG for this command.</para> | |
| 479 | −</entry> | |
| 480 | − </row><row><entry | |
| 481 | − align="char"> | |
| 482 | −<para>ca_msg_t * | |
| 483 | −</para> | |
| 484 | −</entry><entry | |
| 485 | − align="char"> | |
| 486 | −<para>Undocumented.</para> | |
| 487 | −</entry> | |
| 488 | − </row></tbody></tgroup></informaltable> | |
| 489 | −&return-value-dvb; | |
| 490 | −</section> | |
| 491 | − | |
| 492 | −<section id="CA_SET_DESCR" | |
| 493 | −role="subsection"><title>CA_SET_DESCR</title> | |
| 494 | −<para>DESCRIPTION | |
| 495 | −</para> | |
| 496 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 497 | − align="char"> | |
| 498 | −<para>This ioctl is undocumented. Documentation is welcome.</para> | |
| 499 | −</entry> | |
| 500 | − </row></tbody></tgroup></informaltable> | |
| 501 | −<para>SYNOPSIS | |
| 502 | −</para> | |
| 503 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 504 | − align="char"> | |
| 505 | −<para>int ioctl(fd, int request = CA_SET_DESCR, | |
| 506 | − ca_descr_t *);</para> | |
| 507 | −</entry> | |
| 508 | − </row></tbody></tgroup></informaltable> | |
| 509 | −<para>PARAMETERS | |
| 510 | −</para> | |
| 511 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 512 | − align="char"> | |
| 513 | −<para>int fd</para> | |
| 514 | −</entry><entry | |
| 515 | − align="char"> | |
| 516 | −<para>File descriptor returned by a previous call to open().</para> | |
| 517 | −</entry> | |
| 518 | − </row><row><entry | |
| 519 | − align="char"> | |
| 520 | −<para>int request</para> | |
| 521 | −</entry><entry | |
| 522 | − align="char"> | |
| 523 | −<para>Equals CA_SET_DESCR for this command.</para> | |
| 524 | −</entry> | |
| 525 | − </row><row><entry | |
| 526 | − align="char"> | |
| 527 | −<para>ca_descr_t * | |
| 528 | −</para> | |
| 529 | −</entry><entry | |
| 530 | − align="char"> | |
| 531 | −<para>Undocumented.</para> | |
| 532 | −</entry> | |
| 533 | − </row></tbody></tgroup></informaltable> | |
| 534 | −&return-value-dvb; | |
| 535 | −</section> | |
| 536 | − | |
| 537 | −<section id="CA_SET_PID" | |
| 538 | −role="subsection"><title>CA_SET_PID</title> | |
| 539 | −<para>DESCRIPTION | |
| 540 | −</para> | |
| 541 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 542 | − align="char"> | |
| 543 | −<para>This ioctl is undocumented. Documentation is welcome.</para> | |
| 544 | −</entry> | |
| 545 | − </row></tbody></tgroup></informaltable> | |
| 546 | −<para>SYNOPSIS | |
| 547 | −</para> | |
| 548 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 549 | − align="char"> | |
| 550 | −<para>int ioctl(fd, int request = CA_SET_PID, | |
| 551 | − ca_pid_t *);</para> | |
| 552 | −</entry> | |
| 553 | − </row></tbody></tgroup></informaltable> | |
| 554 | −<para>PARAMETERS | |
| 555 | −</para> | |
| 556 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 557 | − align="char"> | |
| 558 | −<para>int fd</para> | |
| 559 | −</entry><entry | |
| 560 | − align="char"> | |
| 561 | −<para>File descriptor returned by a previous call to open().</para> | |
| 562 | −</entry> | |
| 563 | − </row><row><entry | |
| 564 | − align="char"> | |
| 565 | −<para>int request</para> | |
| 566 | −</entry><entry | |
| 567 | − align="char"> | |
| 568 | −<para>Equals CA_SET_PID for this command.</para> | |
| 569 | −</entry> | |
| 570 | − </row><row><entry | |
| 571 | − align="char"> | |
| 572 | −<para>ca_pid_t * | |
| 573 | −</para> | |
| 574 | −</entry><entry | |
| 575 | − align="char"> | |
| 576 | −<para>Undocumented.</para> | |
| 577 | −</entry> | |
| 578 | − </row></tbody></tgroup></informaltable> | |
| 579 | −&return-value-dvb; | |
| 580 | −</section> | |
| 581 | − | |
| 582 | −</section> | |
| @@ -1,1162 +0,0 @@ | ||
| 1 | −<title>DVB Demux Device</title> | |
| 2 | − | |
| 3 | −<para>The DVB demux device controls the filters of the DVB hardware/software. It can be | |
| 4 | −accessed through <constant>/dev/adapter?/demux?</constant>. Data types and and ioctl definitions can be | |
| 5 | −accessed by including <constant>linux/dvb/dmx.h</constant> in your application. | |
| 6 | −</para> | |
| 7 | −<section id="dmx_types"> | |
| 8 | −<title>Demux Data Types</title> | |
| 9 | − | |
| 10 | −<section id="dmx-output-t"> | |
| 11 | −<title>Output for the demux</title> | |
| 12 | − | |
| 13 | −<table pgwide="1" frame="none" id="dmx-output"> | |
| 14 | − <title>enum dmx_output</title> | |
| 15 | − <tgroup cols="2"> | |
| 16 | − &cs-def; | |
| 17 | − <thead> | |
| 18 | − <row> | |
| 19 | − <entry>ID</entry> | |
| 20 | − <entry>Description</entry> | |
| 21 | − </row> | |
| 22 | − </thead> | |
| 23 | − <tbody valign="top"> | |
| 24 | − <row> | |
| 25 | − <entry align="char" id="DMX-OUT-DECODER">DMX_OUT_DECODER</entry> | |
| 26 | − <entry>Streaming directly to decoder.</entry> | |
| 27 | − </row><row> | |
| 28 | − <entry align="char" id="DMX-OUT-TAP">DMX_OUT_TAP</entry> | |
| 29 | − <entry>Output going to a memory buffer (to be retrieved via the | |
| 30 | − read command). Delivers the stream output to the demux | |
| 31 | − device on which the ioctl is called.</entry> | |
| 32 | − </row><row> | |
| 33 | − <entry align="char" id="DMX-OUT-TS-TAP">DMX_OUT_TS_TAP</entry> | |
| 34 | − <entry>Output multiplexed into a new TS (to be retrieved by | |
| 35 | − reading from the logical DVR device). Routes output to the | |
| 36 | − logical DVR device <constant>/dev/dvb/adapter?/dvr?</constant>, | |
| 37 | − which delivers a TS multiplexed from all filters for which | |
| 38 | − <constant>DMX_OUT_TS_TAP</constant> was specified.</entry> | |
| 39 | − </row><row> | |
| 40 | − <entry align="char" id="DMX-OUT-TSDEMUX-TAP">DMX_OUT_TSDEMUX_TAP</entry> | |
| 41 | − <entry>Like &DMX-OUT-TS-TAP; but retrieved from the DMX | |
| 42 | − device.</entry> | |
| 43 | − </row> | |
| 44 | − </tbody> | |
| 45 | − </tgroup> | |
| 46 | −</table> | |
| 47 | − | |
| 48 | −</section> | |
| 49 | − | |
| 50 | −<section id="dmx-input-t"> | |
| 51 | −<title>dmx_input_t</title> | |
| 52 | −<programlisting> | |
| 53 | −typedef enum | |
| 54 | −{ | |
| 55 | − DMX_IN_FRONTEND, /⋆ Input from a front-end device. ⋆/ | |
| 56 | − DMX_IN_DVR /⋆ Input from the logical DVR device. ⋆/ | |
| 57 | −} dmx_input_t; | |
| 58 | −</programlisting> | |
| 59 | −</section> | |
| 60 | − | |
| 61 | −<section id="dmx-pes-type-t"> | |
| 62 | −<title>dmx_pes_type_t</title> | |
| 63 | −<programlisting> | |
| 64 | −typedef enum | |
| 65 | −{ | |
| 66 | − DMX_PES_AUDIO0, | |
| 67 | − DMX_PES_VIDEO0, | |
| 68 | − DMX_PES_TELETEXT0, | |
| 69 | − DMX_PES_SUBTITLE0, | |
| 70 | − DMX_PES_PCR0, | |
| 71 | − | |
| 72 | − DMX_PES_AUDIO1, | |
| 73 | − DMX_PES_VIDEO1, | |
| 74 | − DMX_PES_TELETEXT1, | |
| 75 | − DMX_PES_SUBTITLE1, | |
| 76 | − DMX_PES_PCR1, | |
| 77 | − | |
| 78 | − DMX_PES_AUDIO2, | |
| 79 | − DMX_PES_VIDEO2, | |
| 80 | − DMX_PES_TELETEXT2, | |
| 81 | − DMX_PES_SUBTITLE2, | |
| 82 | − DMX_PES_PCR2, | |
| 83 | − | |
| 84 | − DMX_PES_AUDIO3, | |
| 85 | − DMX_PES_VIDEO3, | |
| 86 | − DMX_PES_TELETEXT3, | |
| 87 | − DMX_PES_SUBTITLE3, | |
| 88 | − DMX_PES_PCR3, | |
| 89 | − | |
| 90 | − DMX_PES_OTHER | |
| 91 | −} dmx_pes_type_t; | |
| 92 | −</programlisting> | |
| 93 | −</section> | |
| 94 | − | |
| 95 | −<section id="dmx-filter"> | |
| 96 | −<title>struct dmx_filter</title> | |
| 97 | − <programlisting> | |
| 98 | − typedef struct dmx_filter | |
| 99 | −{ | |
| 100 | − __u8 filter[DMX_FILTER_SIZE]; | |
| 101 | − __u8 mask[DMX_FILTER_SIZE]; | |
| 102 | − __u8 mode[DMX_FILTER_SIZE]; | |
| 103 | −} dmx_filter_t; | |
| 104 | −</programlisting> | |
| 105 | −</section> | |
| 106 | − | |
| 107 | −<section id="dmx-sct-filter-params"> | |
| 108 | −<title>struct dmx_sct_filter_params</title> | |
| 109 | −<programlisting> | |
| 110 | −struct dmx_sct_filter_params | |
| 111 | −{ | |
| 112 | − __u16 pid; | |
| 113 | − dmx_filter_t filter; | |
| 114 | − __u32 timeout; | |
| 115 | − __u32 flags; | |
| 116 | −#define DMX_CHECK_CRC 1 | |
| 117 | −#define DMX_ONESHOT 2 | |
| 118 | −#define DMX_IMMEDIATE_START 4 | |
| 119 | −#define DMX_KERNEL_CLIENT 0x8000 | |
| 120 | −}; | |
| 121 | −</programlisting> | |
| 122 | −</section> | |
| 123 | − | |
| 124 | −<section id="dmx-pes-filter-params"> | |
| 125 | −<title>struct dmx_pes_filter_params</title> | |
| 126 | −<programlisting> | |
| 127 | −struct dmx_pes_filter_params | |
| 128 | −{ | |
| 129 | − __u16 pid; | |
| 130 | − dmx_input_t input; | |
| 131 | − dmx_output_t output; | |
| 132 | − dmx_pes_type_t pes_type; | |
| 133 | − __u32 flags; | |
| 134 | −}; | |
| 135 | −</programlisting> | |
| 136 | −</section> | |
| 137 | − | |
| 138 | −<section id="dmx-event"> | |
| 139 | −<title>struct dmx_event</title> | |
| 140 | − <programlisting> | |
| 141 | − struct dmx_event | |
| 142 | − { | |
| 143 | − dmx_event_t event; | |
| 144 | − time_t timeStamp; | |
| 145 | − union | |
| 146 | − { | |
| 147 | − dmx_scrambling_status_t scrambling; | |
| 148 | − } u; | |
| 149 | − }; | |
| 150 | −</programlisting> | |
| 151 | −</section> | |
| 152 | − | |
| 153 | −<section id="dmx-stc"> | |
| 154 | −<title>struct dmx_stc</title> | |
| 155 | −<programlisting> | |
| 156 | −struct dmx_stc { | |
| 157 | − unsigned int num; /⋆ input : which STC? 0..N ⋆/ | |
| 158 | − unsigned int base; /⋆ output: divisor for stc to get 90 kHz clock ⋆/ | |
| 159 | − __u64 stc; /⋆ output: stc in 'base'⋆90 kHz units ⋆/ | |
| 160 | −}; | |
| 161 | −</programlisting> | |
| 162 | −</section> | |
| 163 | − | |
| 164 | −<section id="dmx-caps"> | |
| 165 | −<title>struct dmx_caps</title> | |
| 166 | −<programlisting> | |
| 167 | − typedef struct dmx_caps { | |
| 168 | − __u32 caps; | |
| 169 | − int num_decoders; | |
| 170 | −} dmx_caps_t; | |
| 171 | −</programlisting> | |
| 172 | −</section> | |
| 173 | − | |
| 174 | −<section id="dmx-source-t"> | |
| 175 | −<title>enum dmx_source_t</title> | |
| 176 | −<programlisting> | |
| 177 | −typedef enum { | |
| 178 | − DMX_SOURCE_FRONT0 = 0, | |
| 179 | − DMX_SOURCE_FRONT1, | |
| 180 | − DMX_SOURCE_FRONT2, | |
| 181 | − DMX_SOURCE_FRONT3, | |
| 182 | − DMX_SOURCE_DVR0 = 16, | |
| 183 | − DMX_SOURCE_DVR1, | |
| 184 | − DMX_SOURCE_DVR2, | |
| 185 | − DMX_SOURCE_DVR3 | |
| 186 | −} dmx_source_t; | |
| 187 | −</programlisting> | |
| 188 | −</section> | |
| 189 | − | |
| 190 | −</section> | |
| 191 | −<section id="dmx_fcalls"> | |
| 192 | −<title>Demux Function Calls</title> | |
| 193 | − | |
| 194 | −<section id="dmx_fopen"> | |
| 195 | −<title>open()</title> | |
| 196 | −<para>DESCRIPTION | |
| 197 | −</para> | |
| 198 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 199 | − align="char"> | |
| 200 | −<para>This system call, used with a device name of /dev/dvb/adapter0/demux0, | |
| 201 | − allocates a new filter and returns a handle which can be used for subsequent | |
| 202 | − control of that filter. This call has to be made for each filter to be used, i.e. every | |
| 203 | − returned file descriptor is a reference to a single filter. /dev/dvb/adapter0/dvr0 | |
| 204 | − is a logical device to be used for retrieving Transport Streams for digital | |
| 205 | − video recording. When reading from this device a transport stream containing | |
| 206 | − the packets from all PES filters set in the corresponding demux device | |
| 207 | − (/dev/dvb/adapter0/demux0) having the output set to DMX_OUT_TS_TAP. A | |
| 208 | − recorded Transport Stream is replayed by writing to this device. </para> | |
| 209 | −<para>The significance of blocking or non-blocking mode is described in the | |
| 210 | − documentation for functions where there is a difference. It does not affect the | |
| 211 | − semantics of the open() call itself. A device opened in blocking mode can later | |
| 212 | − be put into non-blocking mode (and vice versa) using the F_SETFL command | |
| 213 | − of the fcntl system call.</para> | |
| 214 | −</entry> | |
| 215 | − </row></tbody></tgroup></informaltable> | |
| 216 | −<para>SYNOPSIS | |
| 217 | −</para> | |
| 218 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 219 | − align="char"> | |
| 220 | −<para>int open(const char ⋆deviceName, int flags);</para> | |
| 221 | −</entry> | |
| 222 | − </row></tbody></tgroup></informaltable> | |
| 223 | −<para>PARAMETERS | |
| 224 | −</para> | |
| 225 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 226 | − align="char"> | |
| 227 | −<para>const char | |
| 228 | − *deviceName</para> | |
| 229 | −</entry><entry | |
| 230 | − align="char"> | |
| 231 | −<para>Name of demux device.</para> | |
| 232 | −</entry> | |
| 233 | − </row><row><entry | |
| 234 | − align="char"> | |
| 235 | −<para>int flags</para> | |
| 236 | −</entry><entry | |
| 237 | − align="char"> | |
| 238 | −<para>A bit-wise OR of the following flags:</para> | |
| 239 | −</entry> | |
| 240 | − </row><row><entry | |
| 241 | − align="char"> | |
| 242 | −</entry><entry | |
| 243 | − align="char"> | |
| 244 | −<para>O_RDWR read/write access</para> | |
| 245 | −</entry> | |
| 246 | − </row><row><entry | |
| 247 | − align="char"> | |
| 248 | −</entry><entry | |
| 249 | − align="char"> | |
| 250 | −<para>O_NONBLOCK open in non-blocking mode</para> | |
| 251 | −</entry> | |
| 252 | − </row><row><entry | |
| 253 | − align="char"> | |
| 254 | −</entry><entry | |
| 255 | − align="char"> | |
| 256 | −<para>(blocking mode is the default)</para> | |
| 257 | −</entry> | |
| 258 | − </row></tbody></tgroup></informaltable> | |
| 259 | −<para>RETURN VALUE</para> | |
| 260 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 261 | − align="char"> | |
| 262 | −<para>ENODEV</para> | |
| 263 | −</entry><entry | |
| 264 | − align="char"> | |
| 265 | −<para>Device driver not loaded/available.</para> | |
| 266 | −</entry> | |
| 267 | − </row><row><entry | |
| 268 | − align="char"> | |
| 269 | −<para>EINVAL</para> | |
| 270 | −</entry><entry | |
| 271 | − align="char"> | |
| 272 | −<para>Invalid argument.</para> | |
| 273 | −</entry> | |
| 274 | − </row><row><entry | |
| 275 | − align="char"> | |
| 276 | −<para>EMFILE</para> | |
| 277 | −</entry><entry | |
| 278 | − align="char"> | |
| 279 | −<para>“Too many open files”, i.e. no more filters available.</para> | |
| 280 | −</entry> | |
| 281 | − </row><row><entry | |
| 282 | − align="char"> | |
| 283 | −<para>ENOMEM</para> | |
| 284 | −</entry><entry | |
| 285 | − align="char"> | |
| 286 | −<para>The driver failed to allocate enough memory.</para> | |
| 287 | −</entry> | |
| 288 | − </row></tbody></tgroup></informaltable> | |
| 289 | −</section> | |
| 290 | − | |
| 291 | −<section id="dmx_fclose"> | |
| 292 | −<title>close()</title> | |
| 293 | −<para>DESCRIPTION | |
| 294 | −</para> | |
| 295 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 296 | − align="char"> | |
| 297 | −<para>This system call deactivates and deallocates a filter that was previously | |
| 298 | − allocated via the open() call.</para> | |
| 299 | −</entry> | |
| 300 | − </row></tbody></tgroup></informaltable> | |
| 301 | −<para>SYNOPSIS | |
| 302 | −</para> | |
| 303 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 304 | − align="char"> | |
| 305 | −<para>int close(int fd);</para> | |
| 306 | −</entry> | |
| 307 | − </row></tbody></tgroup></informaltable> | |
| 308 | −<para>PARAMETERS | |
| 309 | −</para> | |
| 310 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 311 | − align="char"> | |
| 312 | −<para>int fd</para> | |
| 313 | −</entry><entry | |
| 314 | − align="char"> | |
| 315 | −<para>File descriptor returned by a previous call to open().</para> | |
| 316 | −</entry> | |
| 317 | − </row></tbody></tgroup></informaltable> | |
| 318 | −<para>RETURN VALUE</para> | |
| 319 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 320 | − align="char"> | |
| 321 | −<para>EBADF</para> | |
| 322 | −</entry><entry | |
| 323 | − align="char"> | |
| 324 | −<para>fd is not a valid open file descriptor.</para> | |
| 325 | −</entry> | |
| 326 | − </row></tbody></tgroup></informaltable> | |
| 327 | −</section> | |
| 328 | − | |
| 329 | −<section id="dmx_fread"> | |
| 330 | −<title>read()</title> | |
| 331 | −<para>DESCRIPTION | |
| 332 | −</para> | |
| 333 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 334 | − align="char"> | |
| 335 | −<para>This system call returns filtered data, which might be section or PES data. The | |
| 336 | − filtered data is transferred from the driver’s internal circular buffer to buf. The | |
| 337 | − maximum amount of data to be transferred is implied by count.</para> | |
| 338 | −</entry> | |
| 339 | − </row><row><entry | |
| 340 | − align="char"> | |
| 341 | −<para>When returning section data the driver always tries to return a complete single | |
| 342 | − section (even though buf would provide buffer space for more data). If the size | |
| 343 | − of the buffer is smaller than the section as much as possible will be returned, | |
| 344 | − and the remaining data will be provided in subsequent calls.</para> | |
| 345 | −</entry> | |
| 346 | − </row><row><entry | |
| 347 | − align="char"> | |
| 348 | −<para>The size of the internal buffer is 2 * 4096 bytes (the size of two maximum | |
| 349 | − sized sections) by default. The size of this buffer may be changed by using the | |
| 350 | − DMX_SET_BUFFER_SIZE function. If the buffer is not large enough, or if | |
| 351 | − the read operations are not performed fast enough, this may result in a buffer | |
| 352 | − overflow error. In this case EOVERFLOW will be returned, and the circular | |
| 353 | − buffer will be emptied. This call is blocking if there is no data to return, i.e. the | |
| 354 | − process will be put to sleep waiting for data, unless the O_NONBLOCK flag | |
| 355 | − is specified.</para> | |
| 356 | −</entry> | |
| 357 | − </row><row><entry | |
| 358 | − align="char"> | |
| 359 | −<para>Note that in order to be able to read, the filtering process has to be started | |
| 360 | − by defining either a section or a PES filter by means of the ioctl functions, | |
| 361 | − and then starting the filtering process via the DMX_START ioctl function | |
| 362 | − or by setting the DMX_IMMEDIATE_START flag. If the reading is done | |
| 363 | − from a logical DVR demux device, the data will constitute a Transport Stream | |
| 364 | − including the packets from all PES filters in the corresponding demux device | |
| 365 | − /dev/dvb/adapter0/demux0 having the output set to DMX_OUT_TS_TAP.</para> | |
| 366 | −</entry> | |
| 367 | − </row></tbody></tgroup></informaltable> | |
| 368 | −<para>SYNOPSIS | |
| 369 | −</para> | |
| 370 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 371 | − align="char"> | |
| 372 | −<para>size_t read(int fd, void ⋆buf, size_t count);</para> | |
| 373 | −</entry> | |
| 374 | − </row></tbody></tgroup></informaltable> | |
| 375 | −<para>PARAMETERS | |
| 376 | −</para> | |
| 377 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 378 | − align="char"> | |
| 379 | −<para>int fd</para> | |
| 380 | −</entry><entry | |
| 381 | − align="char"> | |
| 382 | −<para>File descriptor returned by a previous call to open().</para> | |
| 383 | −</entry> | |
| 384 | − </row><row><entry | |
| 385 | − align="char"> | |
| 386 | −<para>void *buf</para> | |
| 387 | −</entry><entry | |
| 388 | − align="char"> | |
| 389 | −<para>Pointer to the buffer to be used for returned filtered data.</para> | |
| 390 | −</entry> | |
| 391 | − </row><row><entry | |
| 392 | − align="char"> | |
| 393 | −<para>size_t count</para> | |
| 394 | −</entry><entry | |
| 395 | − align="char"> | |
| 396 | −<para>Size of buf.</para> | |
| 397 | −</entry> | |
| 398 | − </row></tbody></tgroup></informaltable> | |
| 399 | −<para>RETURN VALUE</para> | |
| 400 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 401 | − align="char"> | |
| 402 | −<para>EWOULDBLOCK</para> | |
| 403 | −</entry><entry | |
| 404 | − align="char"> | |
| 405 | −<para>No data to return and O_NONBLOCK was specified.</para> | |
| 406 | −</entry> | |
| 407 | − </row><row><entry | |
| 408 | − align="char"> | |
| 409 | −<para>EBADF</para> | |
| 410 | −</entry><entry | |
| 411 | − align="char"> | |
| 412 | −<para>fd is not a valid open file descriptor.</para> | |
| 413 | −</entry> | |
| 414 | − </row><row><entry | |
| 415 | − align="char"> | |
| 416 | −<para>ECRC</para> | |
| 417 | −</entry><entry | |
| 418 | − align="char"> | |
| 419 | −<para>Last section had a CRC error - no data returned. The | |
| 420 | − buffer is flushed.</para> | |
| 421 | −</entry> | |
| 422 | − </row><row><entry | |
| 423 | − align="char"> | |
| 424 | −<para>EOVERFLOW</para> | |
| 425 | −</entry><entry | |
| 426 | − align="char"> | |
| 427 | −</entry> | |
| 428 | − </row><row><entry | |
| 429 | − align="char"> | |
| 430 | −</entry><entry | |
| 431 | − align="char"> | |
| 432 | −<para>The filtered data was not read from the buffer in due | |
| 433 | − time, resulting in non-read data being lost. The buffer is | |
| 434 | − flushed.</para> | |
| 435 | −</entry> | |
| 436 | − </row><row><entry | |
| 437 | − align="char"> | |
| 438 | −<para>ETIMEDOUT</para> | |
| 439 | −</entry><entry | |
| 440 | − align="char"> | |
| 441 | −<para>The section was not loaded within the stated timeout | |
| 442 | − period. See ioctl DMX_SET_FILTER for how to set a | |
| 443 | − timeout.</para> | |
| 444 | −</entry> | |
| 445 | − </row><row><entry | |
| 446 | − align="char"> | |
| 447 | −<para>EFAULT</para> | |
| 448 | −</entry><entry | |
| 449 | − align="char"> | |
| 450 | −<para>The driver failed to write to the callers buffer due to an | |
| 451 | − invalid *buf pointer.</para> | |
| 452 | −</entry> | |
| 453 | − </row></tbody></tgroup></informaltable> | |
| 454 | −</section> | |
| 455 | − | |
| 456 | −<section id="dmx_fwrite"> | |
| 457 | −<title>write()</title> | |
| 458 | −<para>DESCRIPTION | |
| 459 | −</para> | |
| 460 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 461 | − align="char"> | |
| 462 | −<para>This system call is only provided by the logical device /dev/dvb/adapter0/dvr0, | |
| 463 | − associated with the physical demux device that provides the actual DVR | |
| 464 | − functionality. It is used for replay of a digitally recorded Transport Stream. | |
| 465 | − Matching filters have to be defined in the corresponding physical demux | |
| 466 | − device, /dev/dvb/adapter0/demux0. The amount of data to be transferred is | |
| 467 | − implied by count.</para> | |
| 468 | −</entry> | |
| 469 | − </row></tbody></tgroup></informaltable> | |
| 470 | −<para>SYNOPSIS | |
| 471 | −</para> | |
| 472 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 473 | − align="char"> | |
| 474 | −<para>ssize_t write(int fd, const void ⋆buf, size_t | |
| 475 | − count);</para> | |
| 476 | −</entry> | |
| 477 | − </row></tbody></tgroup></informaltable> | |
| 478 | −<para>PARAMETERS | |
| 479 | −</para> | |
| 480 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 481 | − align="char"> | |
| 482 | −<para>int fd</para> | |
| 483 | −</entry><entry | |
| 484 | − align="char"> | |
| 485 | −<para>File descriptor returned by a previous call to open().</para> | |
| 486 | −</entry> | |
| 487 | − </row><row><entry | |
| 488 | − align="char"> | |
| 489 | −<para>void *buf</para> | |
| 490 | −</entry><entry | |
| 491 | − align="char"> | |
| 492 | −<para>Pointer to the buffer containing the Transport Stream.</para> | |
| 493 | −</entry> | |
| 494 | − </row><row><entry | |
| 495 | − align="char"> | |
| 496 | −<para>size_t count</para> | |
| 497 | −</entry><entry | |
| 498 | − align="char"> | |
| 499 | −<para>Size of buf.</para> | |
| 500 | −</entry> | |
| 501 | − </row></tbody></tgroup></informaltable> | |
| 502 | −<para>RETURN VALUE</para> | |
| 503 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 504 | − align="char"> | |
| 505 | −<para>EWOULDBLOCK</para> | |
| 506 | −</entry><entry | |
| 507 | − align="char"> | |
| 508 | −<para>No data was written. This | |
| 509 | − might happen if O_NONBLOCK was specified and there | |
| 510 | − is no more buffer space available (if O_NONBLOCK is | |
| 511 | − not specified the function will block until buffer space is | |
| 512 | − available).</para> | |
| 513 | −</entry> | |
| 514 | − </row><row><entry | |
| 515 | − align="char"> | |
| 516 | −<para>EBUSY</para> | |
| 517 | −</entry><entry | |
| 518 | − align="char"> | |
| 519 | −<para>This error code indicates that there are conflicting | |
| 520 | − requests. The corresponding demux device is setup to | |
| 521 | − receive data from the front- end. Make sure that these | |
| 522 | − filters are stopped and that the filters with input set to | |
| 523 | − DMX_IN_DVR are started.</para> | |
| 524 | −</entry> | |
| 525 | − </row><row><entry | |
| 526 | − align="char"> | |
| 527 | −<para>EBADF</para> | |
| 528 | −</entry><entry | |
| 529 | − align="char"> | |
| 530 | −<para>fd is not a valid open file descriptor.</para> | |
| 531 | −</entry> | |
| 532 | − </row></tbody></tgroup></informaltable> | |
| 533 | −</section> | |
| 534 | − | |
| 535 | −<section id="DMX_START"> | |
| 536 | −<title>DMX_START</title> | |
| 537 | −<para>DESCRIPTION | |
| 538 | −</para> | |
| 539 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 540 | − align="char"> | |
| 541 | −<para>This ioctl call is used to start the actual filtering operation defined via the ioctl | |
| 542 | − calls DMX_SET_FILTER or DMX_SET_PES_FILTER.</para> | |
| 543 | −</entry> | |
| 544 | − </row></tbody></tgroup></informaltable> | |
| 545 | −<para>SYNOPSIS | |
| 546 | −</para> | |
| 547 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 548 | − align="char"> | |
| 549 | −<para>int ioctl( int fd, int request = DMX_START);</para> | |
| 550 | −</entry> | |
| 551 | − </row></tbody></tgroup></informaltable> | |
| 552 | −<para>PARAMETERS | |
| 553 | −</para> | |
| 554 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 555 | − align="char"> | |
| 556 | −<para>int fd</para> | |
| 557 | −</entry><entry | |
| 558 | − align="char"> | |
| 559 | −<para>File descriptor returned by a previous call to open().</para> | |
| 560 | −</entry> | |
| 561 | − </row><row><entry | |
| 562 | − align="char"> | |
| 563 | −<para>int request</para> | |
| 564 | −</entry><entry | |
| 565 | − align="char"> | |
| 566 | −<para>Equals DMX_START for this command.</para> | |
| 567 | −</entry> | |
| 568 | − </row></tbody></tgroup></informaltable> | |
| 569 | −&return-value-dvb; | |
| 570 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 571 | − align="char"> | |
| 572 | −<para>EINVAL</para> | |
| 573 | −</entry><entry | |
| 574 | − align="char"> | |
| 575 | −<para>Invalid argument, i.e. no filtering parameters provided via | |
| 576 | − the DMX_SET_FILTER or DMX_SET_PES_FILTER | |
| 577 | − functions.</para> | |
| 578 | −</entry> | |
| 579 | − </row><row><entry | |
| 580 | − align="char"> | |
| 581 | −<para>EBUSY</para> | |
| 582 | −</entry><entry | |
| 583 | − align="char"> | |
| 584 | −<para>This error code indicates that there are conflicting | |
| 585 | − requests. There are active filters filtering data from | |
| 586 | − another input source. Make sure that these filters are | |
| 587 | − stopped before starting this filter.</para> | |
| 588 | −</entry> | |
| 589 | − </row></tbody></tgroup></informaltable> | |
| 590 | −</section> | |
| 591 | − | |
| 592 | −<section id="DMX_STOP"> | |
| 593 | −<title>DMX_STOP</title> | |
| 594 | −<para>DESCRIPTION | |
| 595 | −</para> | |
| 596 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 597 | − align="char"> | |
| 598 | −<para>This ioctl call is used to stop the actual filtering operation defined via the | |
| 599 | − ioctl calls DMX_SET_FILTER or DMX_SET_PES_FILTER and started via | |
| 600 | − the DMX_START command.</para> | |
| 601 | −</entry> | |
| 602 | − </row></tbody></tgroup></informaltable> | |
| 603 | −<para>SYNOPSIS | |
| 604 | −</para> | |
| 605 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 606 | − align="char"> | |
| 607 | −<para>int ioctl( int fd, int request = DMX_STOP);</para> | |
| 608 | −</entry> | |
| 609 | − </row></tbody></tgroup></informaltable> | |
| 610 | −<para>PARAMETERS | |
| 611 | −</para> | |
| 612 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 613 | − align="char"> | |
| 614 | −<para>int fd</para> | |
| 615 | −</entry><entry | |
| 616 | − align="char"> | |
| 617 | −<para>File descriptor returned by a previous call to open().</para> | |
| 618 | −</entry> | |
| 619 | − </row><row><entry | |
| 620 | − align="char"> | |
| 621 | −<para>int request</para> | |
| 622 | −</entry><entry | |
| 623 | − align="char"> | |
| 624 | −<para>Equals DMX_STOP for this command.</para> | |
| 625 | −</entry> | |
| 626 | − </row></tbody></tgroup></informaltable> | |
| 627 | −&return-value-dvb; | |
| 628 | −</section> | |
| 629 | − | |
| 630 | −<section id="DMX_SET_FILTER"> | |
| 631 | −<title>DMX_SET_FILTER</title> | |
| 632 | −<para>DESCRIPTION | |
| 633 | −</para> | |
| 634 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 635 | − align="char"> | |
| 636 | −<para>This ioctl call sets up a filter according to the filter and mask parameters | |
| 637 | − provided. A timeout may be defined stating number of seconds to wait for a | |
| 638 | − section to be loaded. A value of 0 means that no timeout should be applied. | |
| 639 | − Finally there is a flag field where it is possible to state whether a section should | |
| 640 | − be CRC-checked, whether the filter should be a ”one-shot” filter, i.e. if the | |
| 641 | − filtering operation should be stopped after the first section is received, and | |
| 642 | − whether the filtering operation should be started immediately (without waiting | |
| 643 | − for a DMX_START ioctl call). If a filter was previously set-up, this filter will | |
| 644 | − be canceled, and the receive buffer will be flushed.</para> | |
| 645 | −</entry> | |
| 646 | − </row></tbody></tgroup></informaltable> | |
| 647 | −<para>SYNOPSIS | |
| 648 | −</para> | |
| 649 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 650 | − align="char"> | |
| 651 | −<para>int ioctl( int fd, int request = DMX_SET_FILTER, | |
| 652 | − struct dmx_sct_filter_params ⋆params);</para> | |
| 653 | −</entry> | |
| 654 | − </row></tbody></tgroup></informaltable> | |
| 655 | −<para>PARAMETERS | |
| 656 | −</para> | |
| 657 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 658 | − align="char"> | |
| 659 | −<para>int fd</para> | |
| 660 | −</entry><entry | |
| 661 | − align="char"> | |
| 662 | −<para>File descriptor returned by a previous call to open().</para> | |
| 663 | −</entry> | |
| 664 | − </row><row><entry | |
| 665 | − align="char"> | |
| 666 | −<para>int request</para> | |
| 667 | −</entry><entry | |
| 668 | − align="char"> | |
| 669 | −<para>Equals DMX_SET_FILTER for this command.</para> | |
| 670 | −</entry> | |
| 671 | − </row><row><entry | |
| 672 | − align="char"> | |
| 673 | −<para>struct | |
| 674 | − dmx_sct_filter_params | |
| 675 | − *params</para> | |
| 676 | −</entry><entry | |
| 677 | − align="char"> | |
| 678 | −<para>Pointer to structure containing filter parameters.</para> | |
| 679 | −</entry> | |
| 680 | − </row></tbody></tgroup></informaltable> | |
| 681 | −&return-value-dvb; | |
| 682 | −</section> | |
| 683 | − | |
| 684 | −<section id="DMX_SET_PES_FILTER"> | |
| 685 | −<title>DMX_SET_PES_FILTER</title> | |
| 686 | −<para>DESCRIPTION | |
| 687 | −</para> | |
| 688 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 689 | − align="char"> | |
| 690 | −<para>This ioctl call sets up a PES filter according to the parameters provided. By a | |
| 691 | − PES filter is meant a filter that is based just on the packet identifier (PID), i.e. | |
| 692 | − no PES header or payload filtering capability is supported.</para> | |
| 693 | −</entry> | |
| 694 | − </row><row><entry | |
| 695 | − align="char"> | |
| 696 | −<para>The transport stream destination for the filtered output may be set. Also the | |
| 697 | − PES type may be stated in order to be able to e.g. direct a video stream directly | |
| 698 | − to the video decoder. Finally there is a flag field where it is possible to state | |
| 699 | − whether the filtering operation should be started immediately (without waiting | |
| 700 | − for a DMX_START ioctl call). If a filter was previously set-up, this filter will | |
| 701 | − be cancelled, and the receive buffer will be flushed.</para> | |
| 702 | −</entry> | |
| 703 | − </row></tbody></tgroup></informaltable> | |
| 704 | −<para>SYNOPSIS | |
| 705 | −</para> | |
| 706 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 707 | − align="char"> | |
| 708 | −<para>int ioctl( int fd, int request = DMX_SET_PES_FILTER, | |
| 709 | − struct dmx_pes_filter_params ⋆params);</para> | |
| 710 | −</entry> | |
| 711 | − </row></tbody></tgroup></informaltable> | |
| 712 | −<para>PARAMETERS | |
| 713 | −</para> | |
| 714 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 715 | − align="char"> | |
| 716 | −<para>int fd</para> | |
| 717 | −</entry><entry | |
| 718 | − align="char"> | |
| 719 | −<para>File descriptor returned by a previous call to open().</para> | |
| 720 | −</entry> | |
| 721 | − </row><row><entry | |
| 722 | − align="char"> | |
| 723 | −<para>int request</para> | |
| 724 | −</entry><entry | |
| 725 | − align="char"> | |
| 726 | −<para>Equals DMX_SET_PES_FILTER for this command.</para> | |
| 727 | −</entry> | |
| 728 | − </row><row><entry | |
| 729 | − align="char"> | |
| 730 | −<para>struct | |
| 731 | − dmx_pes_filter_params | |
| 732 | − *params</para> | |
| 733 | −</entry><entry | |
| 734 | − align="char"> | |
| 735 | −<para>Pointer to structure containing filter parameters.</para> | |
| 736 | −</entry> | |
| 737 | − </row></tbody></tgroup></informaltable> | |
| 738 | −&return-value-dvb; | |
| 739 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 740 | − align="char"> | |
| 741 | −<para>EBUSY</para> | |
| 742 | −</entry><entry | |
| 743 | − align="char"> | |
| 744 | −<para>This error code indicates that there are conflicting | |
| 745 | − requests. There are active filters filtering data from | |
| 746 | − another input source. Make sure that these filters are | |
| 747 | − stopped before starting this filter.</para> | |
| 748 | −</entry> | |
| 749 | − </row></tbody></tgroup></informaltable> | |
| 750 | −</section> | |
| 751 | − | |
| 752 | −<section id="DMX_SET_BUFFER_SIZE"> | |
| 753 | −<title>DMX_SET_BUFFER_SIZE</title> | |
| 754 | −<para>DESCRIPTION | |
| 755 | −</para> | |
| 756 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 757 | − align="char"> | |
| 758 | −<para>This ioctl call is used to set the size of the circular buffer used for filtered data. | |
| 759 | − The default size is two maximum sized sections, i.e. if this function is not called | |
| 760 | − a buffer size of 2 * 4096 bytes will be used.</para> | |
| 761 | −</entry> | |
| 762 | − </row></tbody></tgroup></informaltable> | |
| 763 | −<para>SYNOPSIS | |
| 764 | −</para> | |
| 765 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 766 | − align="char"> | |
| 767 | −<para>int ioctl( int fd, int request = | |
| 768 | − DMX_SET_BUFFER_SIZE, unsigned long size);</para> | |
| 769 | −</entry> | |
| 770 | − </row></tbody></tgroup></informaltable> | |
| 771 | −<para>PARAMETERS | |
| 772 | −</para> | |
| 773 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 774 | − align="char"> | |
| 775 | −<para>int fd</para> | |
| 776 | −</entry><entry | |
| 777 | − align="char"> | |
| 778 | −<para>File descriptor returned by a previous call to open().</para> | |
| 779 | −</entry> | |
| 780 | − </row><row><entry | |
| 781 | − align="char"> | |
| 782 | −<para>int request</para> | |
| 783 | −</entry><entry | |
| 784 | − align="char"> | |
| 785 | −<para>Equals DMX_SET_BUFFER_SIZE for this command.</para> | |
| 786 | −</entry> | |
| 787 | − </row><row><entry | |
| 788 | − align="char"> | |
| 789 | −<para>unsigned long size</para> | |
| 790 | −</entry><entry | |
| 791 | − align="char"> | |
| 792 | −<para>Size of circular buffer.</para> | |
| 793 | −</entry> | |
| 794 | − </row></tbody></tgroup></informaltable> | |
| 795 | −&return-value-dvb; | |
| 796 | −</section> | |
| 797 | − | |
| 798 | −<section id="DMX_GET_EVENT"> | |
| 799 | −<title>DMX_GET_EVENT</title> | |
| 800 | −<para>DESCRIPTION | |
| 801 | −</para> | |
| 802 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 803 | − align="char"> | |
| 804 | −<para>This ioctl call returns an event if available. If an event is not available, | |
| 805 | − the behavior depends on whether the device is in blocking or non-blocking | |
| 806 | − mode. In the latter case, the call fails immediately with errno set to | |
| 807 | − EWOULDBLOCK. In the former case, the call blocks until an event becomes | |
| 808 | − available.</para> | |
| 809 | −</entry> | |
| 810 | − </row><row><entry | |
| 811 | − align="char"> | |
| 812 | −<para>The standard Linux poll() and/or select() system calls can be used with the | |
| 813 | − device file descriptor to watch for new events. For select(), the file descriptor | |
| 814 | − should be included in the exceptfds argument, and for poll(), POLLPRI should | |
| 815 | − be specified as the wake-up condition. Only the latest event for each filter is | |
| 816 | − saved.</para> | |
| 817 | −</entry> | |
| 818 | − </row></tbody></tgroup></informaltable> | |
| 819 | −<para>SYNOPSIS | |
| 820 | −</para> | |
| 821 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 822 | − align="char"> | |
| 823 | −<para>int ioctl( int fd, int request = DMX_GET_EVENT, | |
| 824 | − struct dmx_event ⋆ev);</para> | |
| 825 | −</entry> | |
| 826 | − </row></tbody></tgroup></informaltable> | |
| 827 | −<para>PARAMETERS | |
| 828 | −</para> | |
| 829 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 830 | − align="char"> | |
| 831 | −<para>int fd</para> | |
| 832 | −</entry><entry | |
| 833 | − align="char"> | |
| 834 | −<para>File descriptor returned by a previous call to open().</para> | |
| 835 | −</entry> | |
| 836 | − </row><row><entry | |
| 837 | − align="char"> | |
| 838 | −<para>int request</para> | |
| 839 | −</entry><entry | |
| 840 | − align="char"> | |
| 841 | −<para>Equals DMX_GET_EVENT for this command.</para> | |
| 842 | −</entry> | |
| 843 | − </row><row><entry | |
| 844 | − align="char"> | |
| 845 | −<para>struct dmx_event *ev</para> | |
| 846 | −</entry><entry | |
| 847 | − align="char"> | |
| 848 | −<para>Pointer to the location where the event is to be stored.</para> | |
| 849 | −</entry> | |
| 850 | − </row></tbody></tgroup></informaltable> | |
| 851 | −&return-value-dvb; | |
| 852 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 853 | − align="char"> | |
| 854 | −<para>EWOULDBLOCK</para> | |
| 855 | −</entry><entry | |
| 856 | − align="char"> | |
| 857 | −<para>There is no event pending, and the device is in | |
| 858 | − non-blocking mode.</para> | |
| 859 | −</entry> | |
| 860 | − </row></tbody></tgroup></informaltable> | |
| 861 | −</section> | |
| 862 | − | |
| 863 | −<section id="DMX_GET_STC"> | |
| 864 | −<title>DMX_GET_STC</title> | |
| 865 | −<para>DESCRIPTION | |
| 866 | −</para> | |
| 867 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 868 | − align="char"> | |
| 869 | −<para>This ioctl call returns the current value of the system time counter (which is driven | |
| 870 | − by a PES filter of type DMX_PES_PCR). Some hardware supports more than one | |
| 871 | − STC, so you must specify which one by setting the num field of stc before the ioctl | |
| 872 | − (range 0...n). The result is returned in form of a ratio with a 64 bit numerator | |
| 873 | − and a 32 bit denominator, so the real 90kHz STC value is stc->stc / | |
| 874 | − stc->base | |
| 875 | − .</para> | |
| 876 | −</entry> | |
| 877 | − </row></tbody></tgroup></informaltable> | |
| 878 | −<para>SYNOPSIS | |
| 879 | −</para> | |
| 880 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 881 | − align="char"> | |
| 882 | −<para>int ioctl( int fd, int request = DMX_GET_STC, struct | |
| 883 | − dmx_stc ⋆stc);</para> | |
| 884 | −</entry> | |
| 885 | − </row></tbody></tgroup></informaltable> | |
| 886 | −<para>PARAMETERS | |
| 887 | −</para> | |
| 888 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 889 | − align="char"> | |
| 890 | −<para>int fd</para> | |
| 891 | −</entry><entry | |
| 892 | − align="char"> | |
| 893 | −<para>File descriptor returned by a previous call to open().</para> | |
| 894 | −</entry> | |
| 895 | − </row><row><entry | |
| 896 | − align="char"> | |
| 897 | −<para>int request</para> | |
| 898 | −</entry><entry | |
| 899 | − align="char"> | |
| 900 | −<para>Equals DMX_GET_STC for this command.</para> | |
| 901 | −</entry> | |
| 902 | − </row><row><entry | |
| 903 | − align="char"> | |
| 904 | −<para>struct dmx_stc *stc</para> | |
| 905 | −</entry><entry | |
| 906 | − align="char"> | |
| 907 | −<para>Pointer to the location where the stc is to be stored.</para> | |
| 908 | −</entry> | |
| 909 | − </row></tbody></tgroup></informaltable> | |
| 910 | −&return-value-dvb; | |
| 911 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 912 | − align="char"> | |
| 913 | −<para>EINVAL</para> | |
| 914 | −</entry><entry | |
| 915 | − align="char"> | |
| 916 | −<para>Invalid stc number.</para> | |
| 917 | −</entry> | |
| 918 | − </row></tbody></tgroup></informaltable> | |
| 919 | − </section> | |
| 920 | − | |
| 921 | −<section id="DMX_GET_PES_PIDS" | |
| 922 | −role="subsection"><title>DMX_GET_PES_PIDS</title> | |
| 923 | −<para>DESCRIPTION | |
| 924 | −</para> | |
| 925 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 926 | − align="char"> | |
| 927 | −<para>This ioctl is undocumented. Documentation is welcome.</para> | |
| 928 | −</entry> | |
| 929 | − </row></tbody></tgroup></informaltable> | |
| 930 | −<para>SYNOPSIS | |
| 931 | −</para> | |
| 932 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 933 | − align="char"> | |
| 934 | −<para>int ioctl(fd, int request = DMX_GET_PES_PIDS, | |
| 935 | − __u16[5]);</para> | |
| 936 | −</entry> | |
| 937 | − </row></tbody></tgroup></informaltable> | |
| 938 | −<para>PARAMETERS | |
| 939 | −</para> | |
| 940 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 941 | − align="char"> | |
| 942 | −<para>int fd</para> | |
| 943 | −</entry><entry | |
| 944 | − align="char"> | |
| 945 | −<para>File descriptor returned by a previous call to open().</para> | |
| 946 | −</entry> | |
| 947 | − </row><row><entry | |
| 948 | − align="char"> | |
| 949 | −<para>int request</para> | |
| 950 | −</entry><entry | |
| 951 | − align="char"> | |
| 952 | −<para>Equals DMX_GET_PES_PIDS for this command.</para> | |
| 953 | −</entry> | |
| 954 | − </row><row><entry | |
| 955 | − align="char"> | |
| 956 | −<para>__u16[5] | |
| 957 | −</para> | |
| 958 | −</entry><entry | |
| 959 | − align="char"> | |
| 960 | −<para>Undocumented.</para> | |
| 961 | −</entry> | |
| 962 | − </row></tbody></tgroup></informaltable> | |
| 963 | −&return-value-dvb; | |
| 964 | −</section> | |
| 965 | − | |
| 966 | −<section id="DMX_GET_CAPS" | |
| 967 | −role="subsection"><title>DMX_GET_CAPS</title> | |
| 968 | −<para>DESCRIPTION | |
| 969 | −</para> | |
| 970 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 971 | − align="char"> | |
| 972 | −<para>This ioctl is undocumented. Documentation is welcome.</para> | |
| 973 | −</entry> | |
| 974 | − </row></tbody></tgroup></informaltable> | |
| 975 | −<para>SYNOPSIS | |
| 976 | −</para> | |
| 977 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 978 | − align="char"> | |
| 979 | −<para>int ioctl(fd, int request = DMX_GET_CAPS, | |
| 980 | − dmx_caps_t *);</para> | |
| 981 | −</entry> | |
| 982 | − </row></tbody></tgroup></informaltable> | |
| 983 | −<para>PARAMETERS | |
| 984 | −</para> | |
| 985 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 986 | − align="char"> | |
| 987 | −<para>int fd</para> | |
| 988 | −</entry><entry | |
| 989 | − align="char"> | |
| 990 | −<para>File descriptor returned by a previous call to open().</para> | |
| 991 | −</entry> | |
| 992 | − </row><row><entry | |
| 993 | − align="char"> | |
| 994 | −<para>int request</para> | |
| 995 | −</entry><entry | |
| 996 | − align="char"> | |
| 997 | −<para>Equals DMX_GET_CAPS for this command.</para> | |
| 998 | −</entry> | |
| 999 | − </row><row><entry | |
| 1000 | − align="char"> | |
| 1001 | −<para>dmx_caps_t * | |
| 1002 | −</para> | |
| 1003 | −</entry><entry | |
| 1004 | − align="char"> | |
| 1005 | −<para>Undocumented.</para> | |
| 1006 | −</entry> | |
| 1007 | − </row></tbody></tgroup></informaltable> | |
| 1008 | −&return-value-dvb; | |
| 1009 | −</section> | |
| 1010 | − | |
| 1011 | −<section id="DMX_SET_SOURCE" | |
| 1012 | −role="subsection"><title>DMX_SET_SOURCE</title> | |
| 1013 | −<para>DESCRIPTION | |
| 1014 | −</para> | |
| 1015 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1016 | − align="char"> | |
| 1017 | −<para>This ioctl is undocumented. Documentation is welcome.</para> | |
| 1018 | −</entry> | |
| 1019 | − </row></tbody></tgroup></informaltable> | |
| 1020 | −<para>SYNOPSIS | |
| 1021 | −</para> | |
| 1022 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1023 | − align="char"> | |
| 1024 | −<para>int ioctl(fd, int request = DMX_SET_SOURCE, | |
| 1025 | − dmx_source_t *);</para> | |
| 1026 | −</entry> | |
| 1027 | − </row></tbody></tgroup></informaltable> | |
| 1028 | −<para>PARAMETERS | |
| 1029 | −</para> | |
| 1030 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1031 | − align="char"> | |
| 1032 | −<para>int fd</para> | |
| 1033 | −</entry><entry | |
| 1034 | − align="char"> | |
| 1035 | −<para>File descriptor returned by a previous call to open().</para> | |
| 1036 | −</entry> | |
| 1037 | − </row><row><entry | |
| 1038 | − align="char"> | |
| 1039 | −<para>int request</para> | |
| 1040 | −</entry><entry | |
| 1041 | − align="char"> | |
| 1042 | −<para>Equals DMX_SET_SOURCE for this command.</para> | |
| 1043 | −</entry> | |
| 1044 | − </row><row><entry | |
| 1045 | − align="char"> | |
| 1046 | −<para>dmx_source_t * | |
| 1047 | −</para> | |
| 1048 | −</entry><entry | |
| 1049 | − align="char"> | |
| 1050 | −<para>Undocumented.</para> | |
| 1051 | −</entry> | |
| 1052 | − </row></tbody></tgroup></informaltable> | |
| 1053 | −&return-value-dvb; | |
| 1054 | −</section> | |
| 1055 | − | |
| 1056 | −<section id="DMX_ADD_PID" | |
| 1057 | −role="subsection"><title>DMX_ADD_PID</title> | |
| 1058 | −<para>DESCRIPTION | |
| 1059 | −</para> | |
| 1060 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1061 | − align="char"> | |
| 1062 | −<para>This ioctl call allows to add multiple PIDs to a transport stream filter | |
| 1063 | −previously set up with DMX_SET_PES_FILTER and output equal to DMX_OUT_TSDEMUX_TAP. | |
| 1064 | −</para></entry></row><row><entry align="char"><para> | |
| 1065 | −It is used by readers of /dev/dvb/adapterX/demuxY. | |
| 1066 | −</para></entry></row><row><entry align="char"><para> | |
| 1067 | −It may be called at any time, i.e. before or after the first filter on the | |
| 1068 | −shared file descriptor was started. It makes it possible to record multiple | |
| 1069 | −services without the need to de-multiplex or re-multiplex TS packets.</para> | |
| 1070 | −</entry> | |
| 1071 | − </row></tbody></tgroup></informaltable> | |
| 1072 | −<para>SYNOPSIS | |
| 1073 | −</para> | |
| 1074 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1075 | − align="char"> | |
| 1076 | −<para>int ioctl(fd, int request = DMX_ADD_PID, | |
| 1077 | − __u16 *);</para> | |
| 1078 | −</entry> | |
| 1079 | − </row></tbody></tgroup></informaltable> | |
| 1080 | −<para>PARAMETERS | |
| 1081 | −</para> | |
| 1082 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1083 | − align="char"> | |
| 1084 | −<para>int fd</para> | |
| 1085 | −</entry><entry | |
| 1086 | − align="char"> | |
| 1087 | −<para>File descriptor returned by a previous call to open().</para> | |
| 1088 | −</entry> | |
| 1089 | − </row><row><entry | |
| 1090 | − align="char"> | |
| 1091 | −<para>int request</para> | |
| 1092 | −</entry><entry | |
| 1093 | − align="char"> | |
| 1094 | −<para>Equals DMX_ADD_PID for this command.</para> | |
| 1095 | −</entry> | |
| 1096 | − </row><row><entry | |
| 1097 | − align="char"> | |
| 1098 | −<para>__u16 * | |
| 1099 | −</para> | |
| 1100 | −</entry><entry | |
| 1101 | − align="char"> | |
| 1102 | −<para>PID number to be filtered.</para> | |
| 1103 | −</entry> | |
| 1104 | − </row></tbody></tgroup></informaltable> | |
| 1105 | −&return-value-dvb; | |
| 1106 | −</section> | |
| 1107 | − | |
| 1108 | −<section id="DMX_REMOVE_PID" | |
| 1109 | −role="subsection"><title>DMX_REMOVE_PID</title> | |
| 1110 | −<para>DESCRIPTION | |
| 1111 | −</para> | |
| 1112 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1113 | − align="char"> | |
| 1114 | −<para>This ioctl call allows to remove a PID when multiple PIDs are set on a | |
| 1115 | −transport stream filter, e. g. a filter previously set up with output equal to | |
| 1116 | −DMX_OUT_TSDEMUX_TAP, created via either DMX_SET_PES_FILTER or DMX_ADD_PID. | |
| 1117 | −</para></entry></row><row><entry align="char"><para> | |
| 1118 | −It is used by readers of /dev/dvb/adapterX/demuxY. | |
| 1119 | −</para></entry></row><row><entry align="char"><para> | |
| 1120 | −It may be called at any time, i.e. before or after the first filter on the | |
| 1121 | −shared file descriptor was started. It makes it possible to record multiple | |
| 1122 | −services without the need to de-multiplex or re-multiplex TS packets.</para> | |
| 1123 | −</entry> | |
| 1124 | − </row></tbody></tgroup></informaltable> | |
| 1125 | −<para>SYNOPSIS | |
| 1126 | −</para> | |
| 1127 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1128 | − align="char"> | |
| 1129 | −<para>int ioctl(fd, int request = DMX_REMOVE_PID, | |
| 1130 | − __u16 *);</para> | |
| 1131 | −</entry> | |
| 1132 | − </row></tbody></tgroup></informaltable> | |
| 1133 | −<para>PARAMETERS | |
| 1134 | −</para> | |
| 1135 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1136 | − align="char"> | |
| 1137 | −<para>int fd</para> | |
| 1138 | −</entry><entry | |
| 1139 | − align="char"> | |
| 1140 | −<para>File descriptor returned by a previous call to open().</para> | |
| 1141 | −</entry> | |
| 1142 | − </row><row><entry | |
| 1143 | − align="char"> | |
| 1144 | −<para>int request</para> | |
| 1145 | −</entry><entry | |
| 1146 | − align="char"> | |
| 1147 | −<para>Equals DMX_REMOVE_PID for this command.</para> | |
| 1148 | −</entry> | |
| 1149 | − </row><row><entry | |
| 1150 | − align="char"> | |
| 1151 | −<para>__u16 * | |
| 1152 | −</para> | |
| 1153 | −</entry><entry | |
| 1154 | − align="char"> | |
| 1155 | −<para>PID of the PES filter to be removed.</para> | |
| 1156 | −</entry> | |
| 1157 | − </row></tbody></tgroup></informaltable> | |
| 1158 | −&return-value-dvb; | |
| 1159 | −</section> | |
| 1160 | − | |
| 1161 | − | |
| 1162 | −</section> | |
| @@ -1,156 +0,0 @@ | ||
| 1 | −<partinfo> | |
| 2 | −<authorgroup> | |
| 3 | −<author> | |
| 4 | −<firstname>Ralph</firstname> | |
| 5 | −<surname>Metzler</surname> | |
| 6 | −<othername role="mi">J. K.</othername> | |
| 7 | −<affiliation><address><email>rjkm@metzlerbros.de</email></address></affiliation> | |
| 8 | −</author> | |
| 9 | −<author> | |
| 10 | −<firstname>Marcus</firstname> | |
| 11 | −<surname>Metzler</surname> | |
| 12 | −<othername role="mi">O. C.</othername> | |
| 13 | −<affiliation><address><email>rjkm@metzlerbros.de</email></address></affiliation> | |
| 14 | −</author> | |
| 15 | −</authorgroup> | |
| 16 | −<authorgroup> | |
| 17 | −<author> | |
| 18 | −<firstname>Mauro</firstname> | |
| 19 | −<othername role="mi">Carvalho</othername> | |
| 20 | −<surname>Chehab</surname> | |
| 21 | −<affiliation><address><email>m.chehab@samsung.com</email></address></affiliation> | |
| 22 | −<contrib>Ported document to Docbook XML.</contrib> | |
| 23 | −</author> | |
| 24 | −</authorgroup> | |
| 25 | −<copyright> | |
| 26 | − <year>2002</year> | |
| 27 | − <year>2003</year> | |
| 28 | − <holder>Convergence GmbH</holder> | |
| 29 | −</copyright> | |
| 30 | −<copyright> | |
| 31 | − <year>2009-2015</year> | |
| 32 | − <holder>Mauro Carvalho Chehab</holder> | |
| 33 | −</copyright> | |
| 34 | − | |
| 35 | −<revhistory> | |
| 36 | −<!-- Put document revisions here, newest first. --> | |
| 37 | −<revision> | |
| 38 | − <revnumber>2.1.0</revnumber> | |
| 39 | − <date>2015-05-29</date> | |
| 40 | − <authorinitials>mcc</authorinitials> | |
| 41 | − <revremark> | |
| 42 | − DocBook improvements and cleanups, in order to document the | |
| 43 | − system calls on a more standard way and provide more description | |
| 44 | − about the current DVB API. | |
| 45 | − </revremark> | |
| 46 | −</revision> | |
| 47 | −<revision> | |
| 48 | − <revnumber>2.0.4</revnumber> | |
| 49 | − <date>2011-05-06</date> | |
| 50 | − <authorinitials>mcc</authorinitials> | |
| 51 | − <revremark> | |
| 52 | − Add more information about DVB APIv5, better describing the frontend GET/SET props ioctl's. | |
| 53 | − </revremark> | |
| 54 | −</revision> | |
| 55 | −<revision> | |
| 56 | − <revnumber>2.0.3</revnumber> | |
| 57 | − <date>2010-07-03</date> | |
| 58 | − <authorinitials>mcc</authorinitials> | |
| 59 | − <revremark> | |
| 60 | − Add some frontend capabilities flags, present on kernel, but missing at the specs. | |
| 61 | − </revremark> | |
| 62 | −</revision> | |
| 63 | −<revision> | |
| 64 | − <revnumber>2.0.2</revnumber> | |
| 65 | − <date>2009-10-25</date> | |
| 66 | − <authorinitials>mcc</authorinitials> | |
| 67 | − <revremark> | |
| 68 | − documents FE_SET_FRONTEND_TUNE_MODE and FE_DISHETWORK_SEND_LEGACY_CMD ioctls. | |
| 69 | − </revremark> | |
| 70 | −</revision> | |
| 71 | −<revision> | |
| 72 | −<revnumber>2.0.1</revnumber> | |
| 73 | −<date>2009-09-16</date> | |
| 74 | −<authorinitials>mcc</authorinitials> | |
| 75 | −<revremark> | |
| 76 | −Added ISDB-T test originally written by Patrick Boettcher | |
| 77 | −</revremark> | |
| 78 | −</revision> | |
| 79 | −<revision> | |
| 80 | −<revnumber>2.0.0</revnumber> | |
| 81 | −<date>2009-09-06</date> | |
| 82 | −<authorinitials>mcc</authorinitials> | |
| 83 | −<revremark>Conversion from LaTex to DocBook XML. The | |
| 84 | − contents is the same as the original LaTex version.</revremark> | |
| 85 | −</revision> | |
| 86 | −<revision> | |
| 87 | −<revnumber>1.0.0</revnumber> | |
| 88 | −<date>2003-07-24</date> | |
| 89 | −<authorinitials>rjkm</authorinitials> | |
| 90 | −<revremark>Initial revision on LaTEX.</revremark> | |
| 91 | −</revision> | |
| 92 | −</revhistory> | |
| 93 | −</partinfo> | |
| 94 | − | |
| 95 | − | |
| 96 | −<title>LINUX DVB API</title> | |
| 97 | −<subtitle>Version 5.10</subtitle> | |
| 98 | −<!-- ADD THE CHAPTERS HERE --> | |
| 99 | − <chapter id="dvb_introdution"> | |
| 100 | − &sub-intro; | |
| 101 | − </chapter> | |
| 102 | − <chapter id="dvb_frontend"> | |
| 103 | − &sub-frontend; | |
| 104 | − </chapter> | |
| 105 | − <chapter id="dvb_demux"> | |
| 106 | − &sub-demux; | |
| 107 | − </chapter> | |
| 108 | − <chapter id="dvb_ca"> | |
| 109 | − &sub-ca; | |
| 110 | − </chapter> | |
| 111 | − <chapter id="net"> | |
| 112 | − &sub-net; | |
| 113 | − </chapter> | |
| 114 | − <chapter id="legacy_dvb_apis"> | |
| 115 | − <title>DVB Deprecated APIs</title> | |
| 116 | − <para>The APIs described here are kept only for historical reasons. There's | |
| 117 | − just one driver for a very legacy hardware that uses this API. No | |
| 118 | − modern drivers should use it. Instead, audio and video should be using | |
| 119 | − the V4L2 and ALSA APIs, and the pipelines should be set using the | |
| 120 | − Media Controller API</para> | |
| 121 | − <section id="dvb_video"> | |
| 122 | − &sub-video; | |
| 123 | − </section> | |
| 124 | − <section id="dvb_audio"> | |
| 125 | − &sub-audio; | |
| 126 | − </section> | |
| 127 | − </chapter> | |
| 128 | − <chapter id="dvb_examples"> | |
| 129 | − &sub-examples; | |
| 130 | − </chapter> | |
| 131 | −<!-- END OF CHAPTERS --> | |
| 132 | − <appendix id="audio_h"> | |
| 133 | − <title>DVB Audio Header File</title> | |
| 134 | − &sub-audio-h; | |
| 135 | − </appendix> | |
| 136 | − <appendix id="ca_h"> | |
| 137 | − <title>DVB Conditional Access Header File</title> | |
| 138 | − &sub-ca-h; | |
| 139 | − </appendix> | |
| 140 | − <appendix id="dmx_h"> | |
| 141 | − <title>DVB Demux Header File</title> | |
| 142 | − &sub-dmx-h; | |
| 143 | − </appendix> | |
| 144 | − <appendix id="frontend_h"> | |
| 145 | − <title>DVB Frontend Header File</title> | |
| 146 | − &sub-frontend-h; | |
| 147 | − </appendix> | |
| 148 | − <appendix id="net_h"> | |
| 149 | − <title>DVB Network Header File</title> | |
| 150 | − &sub-net-h; | |
| 151 | − </appendix> | |
| 152 | − <appendix id="video_h"> | |
| 153 | − <title>DVB Video Header File</title> | |
| 154 | − &sub-video-h; | |
| 155 | − </appendix> | |
| 156 | − | |
| @@ -1,1680 +0,0 @@ | ||
| 1 | −<section id="frontend-properties"> | |
| 2 | −<title>DVB Frontend properties</title> | |
| 3 | −<para>Tuning into a Digital TV physical channel and starting decoding it | |
| 4 | − requires changing a set of parameters, in order to control the | |
| 5 | − tuner, the demodulator, the Linear Low-noise Amplifier (LNA) and to set the | |
| 6 | − antenna subsystem via Satellite Equipment Control (SEC), on satellite | |
| 7 | − systems. The actual parameters are specific to each particular digital | |
| 8 | − TV standards, and may change as the digital TV specs evolves.</para> | |
| 9 | −<para>In the past, the strategy used was to have a union with the parameters | |
| 10 | − needed to tune for DVB-S, DVB-C, DVB-T and ATSC delivery systems grouped | |
| 11 | − there. The problem is that, as the second generation standards appeared, | |
| 12 | − those structs were not big enough to contain the additional parameters. | |
| 13 | − Also, the union didn't have any space left to be expanded without breaking | |
| 14 | − userspace. So, the decision was to deprecate the legacy union/struct based | |
| 15 | − approach, in favor of a properties set approach.</para> | |
| 16 | − | |
| 17 | −<para>NOTE: on Linux DVB API version 3, setting a frontend were done via | |
| 18 | − <link linkend="dvb-frontend-parameters">struct <constant>dvb_frontend_parameters</constant></link>. | |
| 19 | − This got replaced on version 5 (also called "S2API", as this API were | |
| 20 | − added originally_enabled to provide support for DVB-S2), because the old | |
| 21 | − API has a very limited support to new standards and new hardware. This | |
| 22 | − section describes the new and recommended way to set the frontend, with | |
| 23 | − suppports all digital TV delivery systems.</para> | |
| 24 | − | |
| 25 | −<para>Example: with the properties based approach, in order to set the tuner | |
| 26 | − to a DVB-C channel at 651 kHz, modulated with 256-QAM, FEC 3/4 and symbol | |
| 27 | − rate of 5.217 Mbauds, those properties should be sent to | |
| 28 | − <link linkend="FE_GET_PROPERTY"><constant>FE_SET_PROPERTY</constant></link> ioctl:</para> | |
| 29 | − <itemizedlist> | |
| 30 | − <listitem><para>&DTV-DELIVERY-SYSTEM; = SYS_DVBC_ANNEX_A</para></listitem> | |
| 31 | − <listitem><para>&DTV-FREQUENCY; = 651000000</para></listitem> | |
| 32 | − <listitem><para>&DTV-MODULATION; = QAM_256</para></listitem> | |
| 33 | − <listitem><para>&DTV-INVERSION; = INVERSION_AUTO</para></listitem> | |
| 34 | − <listitem><para>&DTV-SYMBOL-RATE; = 5217000</para></listitem> | |
| 35 | − <listitem><para>&DTV-INNER-FEC; = FEC_3_4</para></listitem> | |
| 36 | − <listitem><para>&DTV-TUNE;</para></listitem> | |
| 37 | − </itemizedlist> | |
| 38 | − | |
| 39 | −<para>The code that would do the above is:</para> | |
| 40 | −<programlisting> | |
| 41 | −#include <stdio.h> | |
| 42 | −#include <fcntl.h> | |
| 43 | −#include <sys/ioctl.h> | |
| 44 | −#include <linux/dvb/frontend.h> | |
| 45 | − | |
| 46 | −static struct dtv_property props[] = { | |
| 47 | − { .cmd = DTV_DELIVERY_SYSTEM, .u.data = SYS_DVBC_ANNEX_A }, | |
| 48 | − { .cmd = DTV_FREQUENCY, .u.data = 651000000 }, | |
| 49 | − { .cmd = DTV_MODULATION, .u.data = QAM_256 }, | |
| 50 | − { .cmd = DTV_INVERSION, .u.data = INVERSION_AUTO }, | |
| 51 | − { .cmd = DTV_SYMBOL_RATE, .u.data = 5217000 }, | |
| 52 | − { .cmd = DTV_INNER_FEC, .u.data = FEC_3_4 }, | |
| 53 | − { .cmd = DTV_TUNE } | |
| 54 | −}; | |
| 55 | − | |
| 56 | −static struct dtv_properties dtv_prop = { | |
| 57 | − .num = 6, .props = props | |
| 58 | −}; | |
| 59 | − | |
| 60 | −int main(void) | |
| 61 | −{ | |
| 62 | − int fd = open("/dev/dvb/adapter0/frontend0", O_RDWR); | |
| 63 | − | |
| 64 | − if (!fd) { | |
| 65 | − perror ("open"); | |
| 66 | − return -1; | |
| 67 | − } | |
| 68 | − if (ioctl(fd, FE_SET_PROPERTY, &dtv_prop) == -1) { | |
| 69 | − perror("ioctl"); | |
| 70 | − return -1; | |
| 71 | − } | |
| 72 | − printf("Frontend set\n"); | |
| 73 | − return 0; | |
| 74 | −} | |
| 75 | −</programlisting> | |
| 76 | − | |
| 77 | −<para>NOTE: While it is possible to directly call the Kernel code like the | |
| 78 | − above example, it is strongly recommended to use | |
| 79 | − <ulink url="https://linuxtv.org/docs/libdvbv5/index.html">libdvbv5</ulink>, | |
| 80 | − as it provides abstraction to work with the supported digital TV standards | |
| 81 | − and provides methods for usual operations like program scanning and to | |
| 82 | − read/write channel descriptor files.</para> | |
| 83 | − | |
| 84 | −<section id="dtv-stats"> | |
| 85 | −<title>struct <structname>dtv_stats</structname></title> | |
| 86 | −<programlisting> | |
| 87 | −struct dtv_stats { | |
| 88 | − __u8 scale; /* enum fecap_scale_params type */ | |
| 89 | − union { | |
| 90 | − __u64 uvalue; /* for counters and relative scales */ | |
| 91 | − __s64 svalue; /* for 1/1000 dB measures */ | |
| 92 | − }; | |
| 93 | −} __packed; | |
| 94 | −</programlisting> | |
| 95 | −</section> | |
| 96 | −<section id="dtv-fe-stats"> | |
| 97 | −<title>struct <structname>dtv_fe_stats</structname></title> | |
| 98 | −<programlisting> | |
| 99 | −#define MAX_DTV_STATS 4 | |
| 100 | − | |
| 101 | −struct dtv_fe_stats { | |
| 102 | − __u8 len; | |
| 103 | − &dtv-stats; stat[MAX_DTV_STATS]; | |
| 104 | −} __packed; | |
| 105 | −</programlisting> | |
| 106 | −</section> | |
| 107 | − | |
| 108 | −<section id="dtv-property"> | |
| 109 | −<title>struct <structname>dtv_property</structname></title> | |
| 110 | −<programlisting> | |
| 111 | −/* Reserved fields should be set to 0 */ | |
| 112 | − | |
| 113 | −struct dtv_property { | |
| 114 | − __u32 cmd; | |
| 115 | − __u32 reserved[3]; | |
| 116 | − union { | |
| 117 | − __u32 data; | |
| 118 | − &dtv-fe-stats; st; | |
| 119 | − struct { | |
| 120 | − __u8 data[32]; | |
| 121 | − __u32 len; | |
| 122 | − __u32 reserved1[3]; | |
| 123 | − void *reserved2; | |
| 124 | − } buffer; | |
| 125 | − } u; | |
| 126 | − int result; | |
| 127 | −} __attribute__ ((packed)); | |
| 128 | − | |
| 129 | −/* num of properties cannot exceed DTV_IOCTL_MAX_MSGS per ioctl */ | |
| 130 | −#define DTV_IOCTL_MAX_MSGS 64 | |
| 131 | −</programlisting> | |
| 132 | −</section> | |
| 133 | −<section id="dtv-properties"> | |
| 134 | −<title>struct <structname>dtv_properties</structname></title> | |
| 135 | −<programlisting> | |
| 136 | −struct dtv_properties { | |
| 137 | − __u32 num; | |
| 138 | − &dtv-property; *props; | |
| 139 | −}; | |
| 140 | −</programlisting> | |
| 141 | −</section> | |
| 142 | − | |
| 143 | −<section> | |
| 144 | − <title>Property types</title> | |
| 145 | −<para> | |
| 146 | −On <link linkend="FE_GET_PROPERTY">FE_GET_PROPERTY and FE_SET_PROPERTY</link>, | |
| 147 | −the actual action is determined by the dtv_property cmd/data pairs. With one single ioctl, is possible to | |
| 148 | −get/set up to 64 properties. The actual meaning of each property is described on the next sections. | |
| 149 | −</para> | |
| 150 | − | |
| 151 | −<para>The available frontend property types are shown on the next section.</para> | |
| 152 | −</section> | |
| 153 | − | |
| 154 | −<section id="fe_property_parameters"> | |
| 155 | − <title>Digital TV property parameters</title> | |
| 156 | − <section id="DTV-UNDEFINED"> | |
| 157 | − <title><constant>DTV_UNDEFINED</constant></title> | |
| 158 | − <para>Used internally. A GET/SET operation for it won't change or return anything.</para> | |
| 159 | − </section> | |
| 160 | − <section id="DTV-TUNE"> | |
| 161 | − <title><constant>DTV_TUNE</constant></title> | |
| 162 | − <para>Interpret the cache of data, build either a traditional frontend tunerequest so we can pass validation in the <constant>FE_SET_FRONTEND</constant> ioctl.</para> | |
| 163 | − </section> | |
| 164 | − <section id="DTV-CLEAR"> | |
| 165 | − <title><constant>DTV_CLEAR</constant></title> | |
| 166 | − <para>Reset a cache of data specific to the frontend here. This does not effect hardware.</para> | |
| 167 | − </section> | |
| 168 | − <section id="DTV-FREQUENCY"> | |
| 169 | − <title><constant>DTV_FREQUENCY</constant></title> | |
| 170 | − | |
| 171 | − <para>Central frequency of the channel.</para> | |
| 172 | − | |
| 173 | − <para>Notes:</para> | |
| 174 | − <para>1)For satellite delivery systems, it is measured in kHz. | |
| 175 | − For the other ones, it is measured in Hz.</para> | |
| 176 | − <para>2)For ISDB-T, the channels are usually transmitted with an offset of 143kHz. | |
| 177 | − E.g. a valid frequency could be 474143 kHz. The stepping is bound to the bandwidth of | |
| 178 | − the channel which is 6MHz.</para> | |
| 179 | − | |
| 180 | − <para>3)As in ISDB-Tsb the channel consists of only one or three segments the | |
| 181 | − frequency step is 429kHz, 3*429 respectively. As for ISDB-T the | |
| 182 | − central frequency of the channel is expected.</para> | |
| 183 | − </section> | |
| 184 | − <section id="DTV-MODULATION"> | |
| 185 | − <title><constant>DTV_MODULATION</constant></title> | |
| 186 | −<para>Specifies the frontend modulation type for delivery systems that supports | |
| 187 | − more than one modulation type. The modulation can be one of the types | |
| 188 | − defined by &fe-modulation;.</para> | |
| 189 | − | |
| 190 | − | |
| 191 | −<section id="fe-modulation-t"> | |
| 192 | −<title>Modulation property</title> | |
| 193 | − | |
| 194 | −<para>Most of the digital TV standards currently offers more than one possible | |
| 195 | − modulation (sometimes called as "constellation" on some standards). This | |
| 196 | − enum contains the values used by the Kernel. Please note that not all | |
| 197 | − modulations are supported by a given standard.</para> | |
| 198 | − | |
| 199 | −<table pgwide="1" frame="none" id="fe-modulation"> | |
| 200 | − <title>enum fe_modulation</title> | |
| 201 | − <tgroup cols="2"> | |
| 202 | − &cs-def; | |
| 203 | − <thead> | |
| 204 | − <row> | |
| 205 | − <entry>ID</entry> | |
| 206 | − <entry>Description</entry> | |
| 207 | − </row> | |
| 208 | − </thead> | |
| 209 | − <tbody valign="top"> | |
| 210 | − <row> | |
| 211 | − <entry id="QPSK"><constant>QPSK</constant></entry> | |
| 212 | − <entry>QPSK modulation</entry> | |
| 213 | − </row><row> | |
| 214 | − <entry id="QAM-16"><constant>QAM_16</constant></entry> | |
| 215 | − <entry>16-QAM modulation</entry> | |
| 216 | − </row><row> | |
| 217 | − <entry id="QAM-32"><constant>QAM_32</constant></entry> | |
| 218 | − <entry>32-QAM modulation</entry> | |
| 219 | − </row><row> | |
| 220 | − <entry id="QAM-64"><constant>QAM_64</constant></entry> | |
| 221 | − <entry>64-QAM modulation</entry> | |
| 222 | − </row><row> | |
| 223 | − <entry id="QAM-128"><constant>QAM_128</constant></entry> | |
| 224 | − <entry>128-QAM modulation</entry> | |
| 225 | − </row><row> | |
| 226 | − <entry id="QAM-256"><constant>QAM_256</constant></entry> | |
| 227 | − <entry>256-QAM modulation</entry> | |
| 228 | − </row><row> | |
| 229 | − <entry id="QAM-AUTO"><constant>QAM_AUTO</constant></entry> | |
| 230 | − <entry>Autodetect QAM modulation</entry> | |
| 231 | − </row><row> | |
| 232 | − <entry id="VSB-8"><constant>VSB_8</constant></entry> | |
| 233 | − <entry>8-VSB modulation</entry> | |
| 234 | − </row><row> | |
| 235 | − <entry id="VSB-16"><constant>VSB_16</constant></entry> | |
| 236 | − <entry>16-VSB modulation</entry> | |
| 237 | − </row><row> | |
| 238 | − <entry id="PSK-8"><constant>PSK_8</constant></entry> | |
| 239 | − <entry>8-PSK modulation</entry> | |
| 240 | − </row><row> | |
| 241 | − <entry id="APSK-16"><constant>APSK_16</constant></entry> | |
| 242 | − <entry>16-APSK modulation</entry> | |
| 243 | − </row><row> | |
| 244 | − <entry id="APSK-32"><constant>APSK_32</constant></entry> | |
| 245 | − <entry>32-APSK modulation</entry> | |
| 246 | − </row><row> | |
| 247 | − <entry id="DQPSK"><constant>DQPSK</constant></entry> | |
| 248 | − <entry>DQPSK modulation</entry> | |
| 249 | − </row><row> | |
| 250 | − <entry id="QAM-4-NR"><constant>QAM_4_NR</constant></entry> | |
| 251 | − <entry>4-QAM-NR modulation</entry> | |
| 252 | − </row> | |
| 253 | − </tbody> | |
| 254 | − </tgroup> | |
| 255 | −</table> | |
| 256 | −</section> | |
| 257 | − | |
| 258 | − </section> | |
| 259 | − <section id="DTV-BANDWIDTH-HZ"> | |
| 260 | − <title><constant>DTV_BANDWIDTH_HZ</constant></title> | |
| 261 | − | |
| 262 | − <para>Bandwidth for the channel, in HZ.</para> | |
| 263 | − | |
| 264 | − <para>Possible values: | |
| 265 | − <constant>1712000</constant>, | |
| 266 | − <constant>5000000</constant>, | |
| 267 | − <constant>6000000</constant>, | |
| 268 | − <constant>7000000</constant>, | |
| 269 | − <constant>8000000</constant>, | |
| 270 | − <constant>10000000</constant>. | |
| 271 | − </para> | |
| 272 | − | |
| 273 | − <para>Notes:</para> | |
| 274 | − | |
| 275 | − <para>1) For ISDB-T it should be always 6000000Hz (6MHz)</para> | |
| 276 | − <para>2) For ISDB-Tsb it can vary depending on the number of connected segments</para> | |
| 277 | − <para>3) Bandwidth doesn't apply for DVB-C transmissions, as the bandwidth | |
| 278 | − for DVB-C depends on the symbol rate</para> | |
| 279 | − <para>4) Bandwidth in ISDB-T is fixed (6MHz) or can be easily derived from | |
| 280 | − other parameters (DTV_ISDBT_SB_SEGMENT_IDX, | |
| 281 | − DTV_ISDBT_SB_SEGMENT_COUNT).</para> | |
| 282 | − <para>5) DVB-T supports 6, 7 and 8MHz.</para> | |
| 283 | − <para>6) In addition, DVB-T2 supports 1.172, 5 and 10MHz.</para> | |
| 284 | − </section> | |
| 285 | − <section id="DTV-INVERSION"> | |
| 286 | − <title><constant>DTV_INVERSION</constant></title> | |
| 287 | − | |
| 288 | − <para>Specifies if the frontend should do spectral inversion or not.</para> | |
| 289 | − | |
| 290 | −<section id="fe-spectral-inversion-t"> | |
| 291 | −<title>enum fe_modulation: Frontend spectral inversion</title> | |
| 292 | − | |
| 293 | −<para>This parameter indicates if spectral inversion should be presumed or not. | |
| 294 | − In the automatic setting (<constant>INVERSION_AUTO</constant>) the hardware | |
| 295 | − will try to figure out the correct setting by itself. If the hardware | |
| 296 | − doesn't support, the DVB core will try to lock at the carrier first with | |
| 297 | − inversion off. If it fails, it will try to enable inversion. | |
| 298 | −</para> | |
| 299 | − | |
| 300 | −<table pgwide="1" frame="none" id="fe-spectral-inversion"> | |
| 301 | − <title>enum fe_modulation</title> | |
| 302 | − <tgroup cols="2"> | |
| 303 | − &cs-def; | |
| 304 | − <thead> | |
| 305 | − <row> | |
| 306 | − <entry>ID</entry> | |
| 307 | − <entry>Description</entry> | |
| 308 | − </row> | |
| 309 | − </thead> | |
| 310 | − <tbody valign="top"> | |
| 311 | − <row> | |
| 312 | − <entry id="INVERSION-OFF"><constant>INVERSION_OFF</constant></entry> | |
| 313 | − <entry>Don't do spectral band inversion.</entry> | |
| 314 | − </row><row> | |
| 315 | − <entry id="INVERSION-ON"><constant>INVERSION_ON</constant></entry> | |
| 316 | − <entry>Do spectral band inversion.</entry> | |
| 317 | − </row><row> | |
| 318 | − <entry id="INVERSION-AUTO"><constant>INVERSION_AUTO</constant></entry> | |
| 319 | − <entry>Autodetect spectral band inversion.</entry> | |
| 320 | − </row> | |
| 321 | − </tbody> | |
| 322 | − </tgroup> | |
| 323 | −</table> | |
| 324 | −</section> | |
| 325 | − | |
| 326 | − </section> | |
| 327 | − <section id="DTV-DISEQC-MASTER"> | |
| 328 | − <title><constant>DTV_DISEQC_MASTER</constant></title> | |
| 329 | − <para>Currently not implemented.</para> | |
| 330 | − </section> | |
| 331 | − <section id="DTV-SYMBOL-RATE"> | |
| 332 | − <title><constant>DTV_SYMBOL_RATE</constant></title> | |
| 333 | − <para>Digital TV symbol rate, in bauds (symbols/second). Used on cable standards.</para> | |
| 334 | − </section> | |
| 335 | − <section id="DTV-INNER-FEC"> | |
| 336 | − <title><constant>DTV_INNER_FEC</constant></title> | |
| 337 | − <para>Used cable/satellite transmissions. The acceptable values are: | |
| 338 | − </para> | |
| 339 | −<section id="fe-code-rate-t"> | |
| 340 | −<title>enum fe_code_rate: type of the Forward Error Correction.</title> | |
| 341 | − | |
| 342 | −<table pgwide="1" frame="none" id="fe-code-rate"> | |
| 343 | − <title>enum fe_code_rate</title> | |
| 344 | − <tgroup cols="2"> | |
| 345 | − &cs-def; | |
| 346 | − <thead> | |
| 347 | − <row> | |
| 348 | − <entry>ID</entry> | |
| 349 | − <entry>Description</entry> | |
| 350 | − </row> | |
| 351 | − </thead> | |
| 352 | − <tbody valign="top"> | |
| 353 | − <row> | |
| 354 | − <entry id="FEC-NONE"><constant>FEC_NONE</constant></entry> | |
| 355 | − <entry>No Forward Error Correction Code</entry> | |
| 356 | − </row><row> | |
| 357 | − <entry id="FEC-AUTO"><constant>FEC_AUTO</constant></entry> | |
| 358 | − <entry>Autodetect Error Correction Code</entry> | |
| 359 | − </row><row> | |
| 360 | − <entry id="FEC-1-2"><constant>FEC_1_2</constant></entry> | |
| 361 | − <entry>Forward Error Correction Code 1/2</entry> | |
| 362 | − </row><row> | |
| 363 | − <entry id="FEC-2-3"><constant>FEC_2_3</constant></entry> | |
| 364 | − <entry>Forward Error Correction Code 2/3</entry> | |
| 365 | − </row><row> | |
| 366 | − <entry id="FEC-3-4"><constant>FEC_3_4</constant></entry> | |
| 367 | − <entry>Forward Error Correction Code 3/4</entry> | |
| 368 | − </row><row> | |
| 369 | − <entry id="FEC-4-5"><constant>FEC_4_5</constant></entry> | |
| 370 | − <entry>Forward Error Correction Code 4/5</entry> | |
| 371 | − </row><row> | |
| 372 | − <entry id="FEC-5-6"><constant>FEC_5_6</constant></entry> | |
| 373 | − <entry>Forward Error Correction Code 5/6</entry> | |
| 374 | − </row><row> | |
| 375 | − <entry id="FEC-6-7"><constant>FEC_6_7</constant></entry> | |
| 376 | − <entry>Forward Error Correction Code 6/7</entry> | |
| 377 | − </row><row> | |
| 378 | − <entry id="FEC-7-8"><constant>FEC_7_8</constant></entry> | |
| 379 | − <entry>Forward Error Correction Code 7/8</entry> | |
| 380 | − </row><row> | |
| 381 | − <entry id="FEC-8-9"><constant>FEC_8_9</constant></entry> | |
| 382 | − <entry>Forward Error Correction Code 8/9</entry> | |
| 383 | − </row><row> | |
| 384 | − <entry id="FEC-9-10"><constant>FEC_9_10</constant></entry> | |
| 385 | − <entry>Forward Error Correction Code 9/10</entry> | |
| 386 | − </row><row> | |
| 387 | − <entry id="FEC-2-5"><constant>FEC_2_5</constant></entry> | |
| 388 | − <entry>Forward Error Correction Code 2/5</entry> | |
| 389 | − </row><row> | |
| 390 | − <entry id="FEC-3-5"><constant>FEC_3_5</constant></entry> | |
| 391 | − <entry>Forward Error Correction Code 3/5</entry> | |
| 392 | − </row> | |
| 393 | − </tbody> | |
| 394 | − </tgroup> | |
| 395 | −</table> | |
| 396 | −</section> | |
| 397 | − </section> | |
| 398 | − <section id="DTV-VOLTAGE"> | |
| 399 | − <title><constant>DTV_VOLTAGE</constant></title> | |
| 400 | − <para>The voltage is usually used with non-DiSEqC capable LNBs to switch | |
| 401 | − the polarzation (horizontal/vertical). When using DiSEqC epuipment this | |
| 402 | − voltage has to be switched consistently to the DiSEqC commands as | |
| 403 | − described in the DiSEqC spec.</para> | |
| 404 | − | |
| 405 | −<table pgwide="1" frame="none" id="fe-sec-voltage"> | |
| 406 | − <title id="fe-sec-voltage-t">enum fe_sec_voltage</title> | |
| 407 | − <tgroup cols="2"> | |
| 408 | − &cs-def; | |
| 409 | − <thead> | |
| 410 | − <row> | |
| 411 | − <entry>ID</entry> | |
| 412 | − <entry>Description</entry> | |
| 413 | − </row> | |
| 414 | − </thead> | |
| 415 | − <tbody valign="top"> | |
| 416 | − <row> | |
| 417 | − <entry align="char" id="SEC-VOLTAGE-13"><constant>SEC_VOLTAGE_13</constant></entry> | |
| 418 | − <entry align="char">Set DC voltage level to 13V</entry> | |
| 419 | − </row><row> | |
| 420 | − <entry align="char" id="SEC-VOLTAGE-18"><constant>SEC_VOLTAGE_18</constant></entry> | |
| 421 | − <entry align="char">Set DC voltage level to 18V</entry> | |
| 422 | − </row><row> | |
| 423 | − <entry align="char" id="SEC-VOLTAGE-OFF"><constant>SEC_VOLTAGE_OFF</constant></entry> | |
| 424 | − <entry align="char">Don't send any voltage to the antenna</entry> | |
| 425 | − </row> | |
| 426 | − </tbody> | |
| 427 | − </tgroup> | |
| 428 | −</table> | |
| 429 | − </section> | |
| 430 | − <section id="DTV-TONE"> | |
| 431 | − <title><constant>DTV_TONE</constant></title> | |
| 432 | − <para>Currently not used.</para> | |
| 433 | − </section> | |
| 434 | − <section id="DTV-PILOT"> | |
| 435 | − <title><constant>DTV_PILOT</constant></title> | |
| 436 | − <para>Sets DVB-S2 pilot</para> | |
| 437 | − <section id="fe-pilot-t"> | |
| 438 | − <title>fe_pilot type</title> | |
| 439 | −<table pgwide="1" frame="none" id="fe-pilot"> | |
| 440 | − <title>enum fe_pilot</title> | |
| 441 | − <tgroup cols="2"> | |
| 442 | − &cs-def; | |
| 443 | − <thead> | |
| 444 | − <row> | |
| 445 | − <entry>ID</entry> | |
| 446 | − <entry>Description</entry> | |
| 447 | − </row> | |
| 448 | − </thead> | |
| 449 | − <tbody valign="top"> | |
| 450 | − <row> | |
| 451 | − <entry align="char" id="PILOT-ON"><constant>PILOT_ON</constant></entry> | |
| 452 | − <entry align="char">Pilot tones enabled</entry> | |
| 453 | − </row><row> | |
| 454 | − <entry align="char" id="PILOT-OFF"><constant>PILOT_OFF</constant></entry> | |
| 455 | − <entry align="char">Pilot tones disabled</entry> | |
| 456 | − </row><row> | |
| 457 | − <entry align="char" id="PILOT-AUTO"><constant>PILOT_AUTO</constant></entry> | |
| 458 | − <entry align="char">Autodetect pilot tones</entry> | |
| 459 | − </row> | |
| 460 | − </tbody> | |
| 461 | − </tgroup> | |
| 462 | −</table> | |
| 463 | − </section> | |
| 464 | − </section> | |
| 465 | − <section id="DTV-ROLLOFF"> | |
| 466 | − <title><constant>DTV_ROLLOFF</constant></title> | |
| 467 | − <para>Sets DVB-S2 rolloff</para> | |
| 468 | − | |
| 469 | − <section id="fe-rolloff-t"> | |
| 470 | − <title>fe_rolloff type</title> | |
| 471 | −<table pgwide="1" frame="none" id="fe-rolloff"> | |
| 472 | − <title>enum fe_rolloff</title> | |
| 473 | − <tgroup cols="2"> | |
| 474 | − &cs-def; | |
| 475 | − <thead> | |
| 476 | − <row> | |
| 477 | − <entry>ID</entry> | |
| 478 | − <entry>Description</entry> | |
| 479 | − </row> | |
| 480 | − </thead> | |
| 481 | − <tbody valign="top"> | |
| 482 | − <row> | |
| 483 | − <entry align="char" id="ROLLOFF-35"><constant>ROLLOFF_35</constant></entry> | |
| 484 | − <entry align="char">Roloff factor: α=35%</entry> | |
| 485 | − </row><row> | |
| 486 | − <entry align="char" id="ROLLOFF-20"><constant>ROLLOFF_20</constant></entry> | |
| 487 | − <entry align="char">Roloff factor: α=20%</entry> | |
| 488 | − </row><row> | |
| 489 | − <entry align="char" id="ROLLOFF-25"><constant>ROLLOFF_25</constant></entry> | |
| 490 | − <entry align="char">Roloff factor: α=25%</entry> | |
| 491 | − </row><row> | |
| 492 | − <entry align="char" id="ROLLOFF-AUTO"><constant>ROLLOFF_AUTO</constant></entry> | |
| 493 | − <entry align="char">Auto-detect the roloff factor.</entry> | |
| 494 | − </row> | |
| 495 | − </tbody> | |
| 496 | − </tgroup> | |
| 497 | −</table> | |
| 498 | − </section> | |
| 499 | − </section> | |
| 500 | − <section id="DTV-DISEQC-SLAVE-REPLY"> | |
| 501 | − <title><constant>DTV_DISEQC_SLAVE_REPLY</constant></title> | |
| 502 | − <para>Currently not implemented.</para> | |
| 503 | − </section> | |
| 504 | − <section id="DTV-FE-CAPABILITY-COUNT"> | |
| 505 | − <title><constant>DTV_FE_CAPABILITY_COUNT</constant></title> | |
| 506 | − <para>Currently not implemented.</para> | |
| 507 | − </section> | |
| 508 | − <section id="DTV-FE-CAPABILITY"> | |
| 509 | − <title><constant>DTV_FE_CAPABILITY</constant></title> | |
| 510 | − <para>Currently not implemented.</para> | |
| 511 | − </section> | |
| 512 | − <section id="DTV-DELIVERY-SYSTEM"> | |
| 513 | − <title><constant>DTV_DELIVERY_SYSTEM</constant></title> | |
| 514 | − <para>Specifies the type of Delivery system</para> | |
| 515 | − <section id="fe-delivery-system-t"> | |
| 516 | − <title>fe_delivery_system type</title> | |
| 517 | − <para>Possible values: </para> | |
| 518 | − | |
| 519 | −<table pgwide="1" frame="none" id="fe-delivery-system"> | |
| 520 | − <title>enum fe_delivery_system</title> | |
| 521 | − <tgroup cols="2"> | |
| 522 | − &cs-def; | |
| 523 | − <thead> | |
| 524 | − <row> | |
| 525 | − <entry>ID</entry> | |
| 526 | − <entry>Description</entry> | |
| 527 | − </row> | |
| 528 | − </thead> | |
| 529 | − <tbody valign="top"> | |
| 530 | − <row> | |
| 531 | − <entry id="SYS-UNDEFINED"><constant>SYS_UNDEFINED</constant></entry> | |
| 532 | − <entry>Undefined standard. Generally, indicates an error</entry> | |
| 533 | − </row><row> | |
| 534 | − <entry id="SYS-DVBC-ANNEX-A"><constant>SYS_DVBC_ANNEX_A</constant></entry> | |
| 535 | − <entry>Cable TV: DVB-C following ITU-T J.83 Annex A spec</entry> | |
| 536 | − </row><row> | |
| 537 | − <entry id="SYS-DVBC-ANNEX-B"><constant>SYS_DVBC_ANNEX_B</constant></entry> | |
| 538 | − <entry>Cable TV: DVB-C following ITU-T J.83 Annex B spec (ClearQAM)</entry> | |
| 539 | − </row><row> | |
| 540 | − <entry id="SYS-DVBC-ANNEX-C"><constant>SYS_DVBC_ANNEX_C</constant></entry> | |
| 541 | − <entry>Cable TV: DVB-C following ITU-T J.83 Annex C spec</entry> | |
| 542 | − </row><row> | |
| 543 | − <entry id="SYS-ISDBC"><constant>SYS_ISDBC</constant></entry> | |
| 544 | − <entry>Cable TV: ISDB-C (no drivers yet)</entry> | |
| 545 | − </row><row> | |
| 546 | − <entry id="SYS-DVBT"><constant>SYS_DVBT</constant></entry> | |
| 547 | − <entry>Terrestral TV: DVB-T</entry> | |
| 548 | − </row><row> | |
| 549 | − <entry id="SYS-DVBT2"><constant>SYS_DVBT2</constant></entry> | |
| 550 | − <entry>Terrestral TV: DVB-T2</entry> | |
| 551 | − </row><row> | |
| 552 | − <entry id="SYS-ISDBT"><constant>SYS_ISDBT</constant></entry> | |
| 553 | − <entry>Terrestral TV: ISDB-T</entry> | |
| 554 | − </row><row> | |
| 555 | − <entry id="SYS-ATSC"><constant>SYS_ATSC</constant></entry> | |
| 556 | − <entry>Terrestral TV: ATSC</entry> | |
| 557 | − </row><row> | |
| 558 | − <entry id="SYS-ATSCMH"><constant>SYS_ATSCMH</constant></entry> | |
| 559 | − <entry>Terrestral TV (mobile): ATSC-M/H</entry> | |
| 560 | − </row><row> | |
| 561 | − <entry id="SYS-DTMB"><constant>SYS_DTMB</constant></entry> | |
| 562 | − <entry>Terrestrial TV: DTMB</entry> | |
| 563 | − </row><row> | |
| 564 | − <entry id="SYS-DVBS"><constant>SYS_DVBS</constant></entry> | |
| 565 | − <entry>Satellite TV: DVB-S</entry> | |
| 566 | − </row><row> | |
| 567 | − <entry id="SYS-DVBS2"><constant>SYS_DVBS2</constant></entry> | |
| 568 | − <entry>Satellite TV: DVB-S2</entry> | |
| 569 | − </row><row> | |
| 570 | − <entry id="SYS-TURBO"><constant>SYS_TURBO</constant></entry> | |
| 571 | − <entry>Satellite TV: DVB-S Turbo</entry> | |
| 572 | − </row><row> | |
| 573 | − <entry id="SYS-ISDBS"><constant>SYS_ISDBS</constant></entry> | |
| 574 | − <entry>Satellite TV: ISDB-S</entry> | |
| 575 | − </row><row> | |
| 576 | − <entry id="SYS-DAB"><constant>SYS_DAB</constant></entry> | |
| 577 | − <entry>Digital audio: DAB (not fully supported)</entry> | |
| 578 | − </row><row> | |
| 579 | − <entry id="SYS-DSS"><constant>SYS_DSS</constant></entry> | |
| 580 | − <entry>Satellite TV:"DSS (not fully supported)</entry> | |
| 581 | − </row><row> | |
| 582 | − <entry id="SYS-CMMB"><constant>SYS_CMMB</constant></entry> | |
| 583 | − <entry>Terrestral TV (mobile):CMMB (not fully supported)</entry> | |
| 584 | − </row><row> | |
| 585 | − <entry id="SYS-DVBH"><constant>SYS_DVBH</constant></entry> | |
| 586 | − <entry>Terrestral TV (mobile): DVB-H (standard deprecated)</entry> | |
| 587 | − </row> | |
| 588 | − </tbody> | |
| 589 | − </tgroup> | |
| 590 | −</table> | |
| 591 | − | |
| 592 | − | |
| 593 | −</section> | |
| 594 | − </section> | |
| 595 | − <section id="DTV-ISDBT-PARTIAL-RECEPTION"> | |
| 596 | − <title><constant>DTV_ISDBT_PARTIAL_RECEPTION</constant></title> | |
| 597 | − | |
| 598 | − <para>If <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '0' this bit-field represents whether | |
| 599 | − the channel is in partial reception mode or not.</para> | |
| 600 | − | |
| 601 | − <para>If '1' <constant>DTV_ISDBT_LAYERA_*</constant> values are assigned to the center segment and | |
| 602 | − <constant>DTV_ISDBT_LAYERA_SEGMENT_COUNT</constant> has to be '1'.</para> | |
| 603 | − | |
| 604 | − <para>If in addition <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '1' | |
| 605 | − <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant> represents whether this ISDB-Tsb channel | |
| 606 | − is consisting of one segment and layer or three segments and two layers.</para> | |
| 607 | − | |
| 608 | − <para>Possible values: 0, 1, -1 (AUTO)</para> | |
| 609 | − </section> | |
| 610 | − <section id="DTV-ISDBT-SOUND-BROADCASTING"> | |
| 611 | − <title><constant>DTV_ISDBT_SOUND_BROADCASTING</constant></title> | |
| 612 | − | |
| 613 | − <para>This field represents whether the other DTV_ISDBT_*-parameters are | |
| 614 | − referring to an ISDB-T and an ISDB-Tsb channel. (See also | |
| 615 | − <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant>).</para> | |
| 616 | − | |
| 617 | − <para>Possible values: 0, 1, -1 (AUTO)</para> | |
| 618 | − </section> | |
| 619 | − <section id="DTV-ISDBT-SB-SUBCHANNEL-ID"> | |
| 620 | − <title><constant>DTV_ISDBT_SB_SUBCHANNEL_ID</constant></title> | |
| 621 | − | |
| 622 | − <para>This field only applies if <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '1'.</para> | |
| 623 | − | |
| 624 | − <para>(Note of the author: This might not be the correct description of the | |
| 625 | − <constant>SUBCHANNEL-ID</constant> in all details, but it is my understanding of the technical | |
| 626 | − background needed to program a device)</para> | |
| 627 | − | |
| 628 | − <para>An ISDB-Tsb channel (1 or 3 segments) can be broadcasted alone or in a | |
| 629 | − set of connected ISDB-Tsb channels. In this set of channels every | |
| 630 | − channel can be received independently. The number of connected | |
| 631 | − ISDB-Tsb segment can vary, e.g. depending on the frequency spectrum | |
| 632 | − bandwidth available.</para> | |
| 633 | − | |
| 634 | − <para>Example: Assume 8 ISDB-Tsb connected segments are broadcasted. The | |
| 635 | − broadcaster has several possibilities to put those channels in the | |
| 636 | − air: Assuming a normal 13-segment ISDB-T spectrum he can align the 8 | |
| 637 | − segments from position 1-8 to 5-13 or anything in between.</para> | |
| 638 | − | |
| 639 | − <para>The underlying layer of segments are subchannels: each segment is | |
| 640 | − consisting of several subchannels with a predefined IDs. A sub-channel | |
| 641 | − is used to help the demodulator to synchronize on the channel.</para> | |
| 642 | − | |
| 643 | − <para>An ISDB-T channel is always centered over all sub-channels. As for | |
| 644 | − the example above, in ISDB-Tsb it is no longer as simple as that.</para> | |
| 645 | − | |
| 646 | − <para><constant>The DTV_ISDBT_SB_SUBCHANNEL_ID</constant> parameter is used to give the | |
| 647 | − sub-channel ID of the segment to be demodulated.</para> | |
| 648 | − | |
| 649 | − <para>Possible values: 0 .. 41, -1 (AUTO)</para> | |
| 650 | − </section> | |
| 651 | − <section id="DTV-ISDBT-SB-SEGMENT-IDX"> | |
| 652 | − <title><constant>DTV_ISDBT_SB_SEGMENT_IDX</constant></title> | |
| 653 | − <para>This field only applies if <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '1'.</para> | |
| 654 | − <para><constant>DTV_ISDBT_SB_SEGMENT_IDX</constant> gives the index of the segment to be | |
| 655 | − demodulated for an ISDB-Tsb channel where several of them are | |
| 656 | − transmitted in the connected manner.</para> | |
| 657 | − <para>Possible values: 0 .. <constant>DTV_ISDBT_SB_SEGMENT_COUNT</constant> - 1</para> | |
| 658 | − <para>Note: This value cannot be determined by an automatic channel search.</para> | |
| 659 | − </section> | |
| 660 | − <section id="DTV-ISDBT-SB-SEGMENT-COUNT"> | |
| 661 | − <title><constant>DTV_ISDBT_SB_SEGMENT_COUNT</constant></title> | |
| 662 | − <para>This field only applies if <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> is '1'.</para> | |
| 663 | − <para><constant>DTV_ISDBT_SB_SEGMENT_COUNT</constant> gives the total count of connected ISDB-Tsb | |
| 664 | − channels.</para> | |
| 665 | − <para>Possible values: 1 .. 13</para> | |
| 666 | − <para>Note: This value cannot be determined by an automatic channel search.</para> | |
| 667 | − </section> | |
| 668 | − <section id="isdb-hierq-layers"> | |
| 669 | − <title><constant>DTV-ISDBT-LAYER*</constant> parameters</title> | |
| 670 | − <para>ISDB-T channels can be coded hierarchically. As opposed to DVB-T in | |
| 671 | − ISDB-T hierarchical layers can be decoded simultaneously. For that | |
| 672 | − reason a ISDB-T demodulator has 3 Viterbi and 3 Reed-Solomon decoders.</para> | |
| 673 | − <para>ISDB-T has 3 hierarchical layers which each can use a part of the | |
| 674 | − available segments. The total number of segments over all layers has | |
| 675 | − to 13 in ISDB-T.</para> | |
| 676 | − <para>There are 3 parameter sets, for Layers A, B and C.</para> | |
| 677 | − <section id="DTV-ISDBT-LAYER-ENABLED"> | |
| 678 | − <title><constant>DTV_ISDBT_LAYER_ENABLED</constant></title> | |
| 679 | − <para>Hierarchical reception in ISDB-T is achieved by enabling or disabling | |
| 680 | − layers in the decoding process. Setting all bits of | |
| 681 | − <constant>DTV_ISDBT_LAYER_ENABLED</constant> to '1' forces all layers (if applicable) to be | |
| 682 | − demodulated. This is the default.</para> | |
| 683 | − <para>If the channel is in the partial reception mode | |
| 684 | − (<constant>DTV_ISDBT_PARTIAL_RECEPTION</constant> = 1) the central segment can be decoded | |
| 685 | − independently of the other 12 segments. In that mode layer A has to | |
| 686 | − have a <constant>SEGMENT_COUNT</constant> of 1.</para> | |
| 687 | − <para>In ISDB-Tsb only layer A is used, it can be 1 or 3 in ISDB-Tsb | |
| 688 | − according to <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant>. <constant>SEGMENT_COUNT</constant> must be filled | |
| 689 | − accordingly.</para> | |
| 690 | − <para>Possible values: 0x1, 0x2, 0x4 (|-able)</para> | |
| 691 | − <para><constant>DTV_ISDBT_LAYER_ENABLED[0:0]</constant> - layer A</para> | |
| 692 | − <para><constant>DTV_ISDBT_LAYER_ENABLED[1:1]</constant> - layer B</para> | |
| 693 | − <para><constant>DTV_ISDBT_LAYER_ENABLED[2:2]</constant> - layer C</para> | |
| 694 | − <para><constant>DTV_ISDBT_LAYER_ENABLED[31:3]</constant> unused</para> | |
| 695 | − </section> | |
| 696 | − <section id="DTV-ISDBT-LAYER-FEC"> | |
| 697 | − <title><constant>DTV_ISDBT_LAYER*_FEC</constant></title> | |
| 698 | − <para>Possible values: <constant>FEC_AUTO</constant>, <constant>FEC_1_2</constant>, <constant>FEC_2_3</constant>, <constant>FEC_3_4</constant>, <constant>FEC_5_6</constant>, <constant>FEC_7_8</constant></para> | |
| 699 | − </section> | |
| 700 | − <section id="DTV-ISDBT-LAYER-MODULATION"> | |
| 701 | − <title><constant>DTV_ISDBT_LAYER*_MODULATION</constant></title> | |
| 702 | − <para>Possible values: <constant>QAM_AUTO</constant>, QP<constant>SK, QAM_16</constant>, <constant>QAM_64</constant>, <constant>DQPSK</constant></para> | |
| 703 | − <para>Note: If layer C is <constant>DQPSK</constant> layer B has to be <constant>DQPSK</constant>. If layer B is <constant>DQPSK</constant> | |
| 704 | − and <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant>=0 layer has to be <constant>DQPSK</constant>.</para> | |
| 705 | − </section> | |
| 706 | − <section id="DTV-ISDBT-LAYER-SEGMENT-COUNT"> | |
| 707 | − <title><constant>DTV_ISDBT_LAYER*_SEGMENT_COUNT</constant></title> | |
| 708 | − <para>Possible values: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, -1 (AUTO)</para> | |
| 709 | − <para>Note: Truth table for <constant>DTV_ISDBT_SOUND_BROADCASTING</constant> and | |
| 710 | − <constant>DTV_ISDBT_PARTIAL_RECEPTION</constant> and <constant>LAYER</constant>*_SEGMENT_COUNT</para> | |
| 711 | − <informaltable id="isdbt-layer_seg-cnt-table"> | |
| 712 | − <tgroup cols="6"> | |
| 713 | − <tbody> | |
| 714 | − <row> | |
| 715 | − <entry>PR</entry> | |
| 716 | − <entry>SB</entry> | |
| 717 | − <entry>Layer A width</entry> | |
| 718 | − <entry>Layer B width</entry> | |
| 719 | − <entry>Layer C width</entry> | |
| 720 | − <entry>total width</entry> | |
| 721 | − </row> | |
| 722 | − <row> | |
| 723 | − <entry>0</entry> | |
| 724 | − <entry>0</entry> | |
| 725 | − <entry>1 .. 13</entry> | |
| 726 | − <entry>1 .. 13</entry> | |
| 727 | − <entry>1 .. 13</entry> | |
| 728 | − <entry>13</entry> | |
| 729 | − </row> | |
| 730 | − <row> | |
| 731 | − <entry>1</entry> | |
| 732 | − <entry>0</entry> | |
| 733 | − <entry>1</entry> | |
| 734 | − <entry>1 .. 13</entry> | |
| 735 | − <entry>1 .. 13</entry> | |
| 736 | − <entry>13</entry> | |
| 737 | − </row> | |
| 738 | − <row> | |
| 739 | − <entry>0</entry> | |
| 740 | − <entry>1</entry> | |
| 741 | − <entry>1</entry> | |
| 742 | − <entry>0</entry> | |
| 743 | − <entry>0</entry> | |
| 744 | − <entry>1</entry> | |
| 745 | − </row> | |
| 746 | − <row> | |
| 747 | − <entry>1</entry> | |
| 748 | − <entry>1</entry> | |
| 749 | − <entry>1</entry> | |
| 750 | − <entry>2</entry> | |
| 751 | − <entry>0</entry> | |
| 752 | − <entry>13</entry> | |
| 753 | − </row> | |
| 754 | − </tbody> | |
| 755 | − </tgroup> | |
| 756 | − </informaltable> | |
| 757 | − </section> | |
| 758 | − <section id="DTV-ISDBT-LAYER-TIME-INTERLEAVING"> | |
| 759 | − <title><constant>DTV_ISDBT_LAYER*_TIME_INTERLEAVING</constant></title> | |
| 760 | − <para>Valid values: 0, 1, 2, 4, -1 (AUTO)</para> | |
| 761 | − <para>when DTV_ISDBT_SOUND_BROADCASTING is active, value 8 is also valid.</para> | |
| 762 | − <para>Note: The real time interleaving length depends on the mode (fft-size). The values | |
| 763 | − here are referring to what can be found in the TMCC-structure, as shown in the table below.</para> | |
| 764 | − <informaltable id="isdbt-layer-interleaving-table"> | |
| 765 | − <tgroup cols="4" align="center"> | |
| 766 | − <tbody> | |
| 767 | − <row> | |
| 768 | − <entry>DTV_ISDBT_LAYER*_TIME_INTERLEAVING</entry> | |
| 769 | − <entry>Mode 1 (2K FFT)</entry> | |
| 770 | − <entry>Mode 2 (4K FFT)</entry> | |
| 771 | − <entry>Mode 3 (8K FFT)</entry> | |
| 772 | − </row> | |
| 773 | − <row> | |
| 774 | − <entry>0</entry> | |
| 775 | − <entry>0</entry> | |
| 776 | − <entry>0</entry> | |
| 777 | − <entry>0</entry> | |
| 778 | − </row> | |
| 779 | − <row> | |
| 780 | − <entry>1</entry> | |
| 781 | − <entry>4</entry> | |
| 782 | − <entry>2</entry> | |
| 783 | − <entry>1</entry> | |
| 784 | − </row> | |
| 785 | − <row> | |
| 786 | − <entry>2</entry> | |
| 787 | − <entry>8</entry> | |
| 788 | − <entry>4</entry> | |
| 789 | − <entry>2</entry> | |
| 790 | − </row> | |
| 791 | − <row> | |
| 792 | − <entry>4</entry> | |
| 793 | − <entry>16</entry> | |
| 794 | − <entry>8</entry> | |
| 795 | − <entry>4</entry> | |
| 796 | − </row> | |
| 797 | − </tbody> | |
| 798 | − </tgroup> | |
| 799 | − </informaltable> | |
| 800 | − </section> | |
| 801 | − <section id="DTV-ATSCMH-FIC-VER"> | |
| 802 | − <title><constant>DTV_ATSCMH_FIC_VER</constant></title> | |
| 803 | − <para>Version number of the FIC (Fast Information Channel) signaling data.</para> | |
| 804 | − <para>FIC is used for relaying information to allow rapid service acquisition by the receiver.</para> | |
| 805 | − <para>Possible values: 0, 1, 2, 3, ..., 30, 31</para> | |
| 806 | − </section> | |
| 807 | − <section id="DTV-ATSCMH-PARADE-ID"> | |
| 808 | − <title><constant>DTV_ATSCMH_PARADE_ID</constant></title> | |
| 809 | − <para>Parade identification number</para> | |
| 810 | − <para>A parade is a collection of up to eight MH groups, conveying one or two ensembles.</para> | |
| 811 | − <para>Possible values: 0, 1, 2, 3, ..., 126, 127</para> | |
| 812 | − </section> | |
| 813 | − <section id="DTV-ATSCMH-NOG"> | |
| 814 | − <title><constant>DTV_ATSCMH_NOG</constant></title> | |
| 815 | − <para>Number of MH groups per MH subframe for a designated parade.</para> | |
| 816 | − <para>Possible values: 1, 2, 3, 4, 5, 6, 7, 8</para> | |
| 817 | − </section> | |
| 818 | − <section id="DTV-ATSCMH-TNOG"> | |
| 819 | − <title><constant>DTV_ATSCMH_TNOG</constant></title> | |
| 820 | − <para>Total number of MH groups including all MH groups belonging to all MH parades in one MH subframe.</para> | |
| 821 | − <para>Possible values: 0, 1, 2, 3, ..., 30, 31</para> | |
| 822 | − </section> | |
| 823 | − <section id="DTV-ATSCMH-SGN"> | |
| 824 | − <title><constant>DTV_ATSCMH_SGN</constant></title> | |
| 825 | − <para>Start group number.</para> | |
| 826 | − <para>Possible values: 0, 1, 2, 3, ..., 14, 15</para> | |
| 827 | − </section> | |
| 828 | − <section id="DTV-ATSCMH-PRC"> | |
| 829 | − <title><constant>DTV_ATSCMH_PRC</constant></title> | |
| 830 | − <para>Parade repetition cycle.</para> | |
| 831 | − <para>Possible values: 1, 2, 3, 4, 5, 6, 7, 8</para> | |
| 832 | − </section> | |
| 833 | − <section id="DTV-ATSCMH-RS-FRAME-MODE"> | |
| 834 | − <title><constant>DTV_ATSCMH_RS_FRAME_MODE</constant></title> | |
| 835 | − <para>Reed Solomon (RS) frame mode.</para> | |
| 836 | − <para>Possible values are:</para> | |
| 837 | −<table pgwide="1" frame="none" id="atscmh-rs-frame-mode"> | |
| 838 | − <title>enum atscmh_rs_frame_mode</title> | |
| 839 | − <tgroup cols="2"> | |
| 840 | − &cs-def; | |
| 841 | − <thead> | |
| 842 | − <row> | |
| 843 | − <entry>ID</entry> | |
| 844 | − <entry>Description</entry> | |
| 845 | − </row> | |
| 846 | − </thead> | |
| 847 | − <tbody valign="top"> | |
| 848 | − <row> | |
| 849 | − <entry id="ATSCMH-RSFRAME-PRI-ONLY"><constant>ATSCMH_RSFRAME_PRI_ONLY</constant></entry> | |
| 850 | − <entry>Single Frame: There is only a primary RS Frame for all | |
| 851 | − Group Regions.</entry> | |
| 852 | − </row><row> | |
| 853 | − <entry id="ATSCMH-RSFRAME-PRI-SEC"><constant>ATSCMH_RSFRAME_PRI_SEC</constant></entry> | |
| 854 | − <entry>Dual Frame: There are two separate RS Frames: Primary RS | |
| 855 | − Frame for Group Region A and B and Secondary RS Frame for Group | |
| 856 | − Region C and D.</entry> | |
| 857 | − </row> | |
| 858 | − </tbody> | |
| 859 | − </tgroup> | |
| 860 | −</table> | |
| 861 | − </section> | |
| 862 | − <section id="DTV-ATSCMH-RS-FRAME-ENSEMBLE"> | |
| 863 | − <title><constant>DTV_ATSCMH_RS_FRAME_ENSEMBLE</constant></title> | |
| 864 | − <para>Reed Solomon(RS) frame ensemble.</para> | |
| 865 | − <para>Possible values are:</para> | |
| 866 | −<table pgwide="1" frame="none" id="atscmh-rs-frame-ensemble"> | |
| 867 | − <title>enum atscmh_rs_frame_ensemble</title> | |
| 868 | − <tgroup cols="2"> | |
| 869 | − &cs-def; | |
| 870 | − <thead> | |
| 871 | − <row> | |
| 872 | − <entry>ID</entry> | |
| 873 | − <entry>Description</entry> | |
| 874 | − </row> | |
| 875 | − </thead> | |
| 876 | − <tbody valign="top"> | |
| 877 | − <row> | |
| 878 | − <entry id="ATSCMH-RSFRAME-ENS-PRI"><constant>ATSCMH_RSFRAME_ENS_PRI</constant></entry> | |
| 879 | − <entry>Primary Ensemble.</entry> | |
| 880 | − </row><row> | |
| 881 | − <entry id="ATSCMH-RSFRAME-ENS-SEC"><constant>AATSCMH_RSFRAME_PRI_SEC</constant></entry> | |
| 882 | − <entry>Secondary Ensemble.</entry> | |
| 883 | − </row><row> | |
| 884 | − <entry id="ATSCMH-RSFRAME-RES"><constant>AATSCMH_RSFRAME_RES</constant></entry> | |
| 885 | − <entry>Reserved. Shouldn't be used.</entry> | |
| 886 | − </row> | |
| 887 | − </tbody> | |
| 888 | − </tgroup> | |
| 889 | −</table> | |
| 890 | − </section> | |
| 891 | − <section id="DTV-ATSCMH-RS-CODE-MODE-PRI"> | |
| 892 | − <title><constant>DTV_ATSCMH_RS_CODE_MODE_PRI</constant></title> | |
| 893 | − <para>Reed Solomon (RS) code mode (primary).</para> | |
| 894 | − <para>Possible values are:</para> | |
| 895 | −<table pgwide="1" frame="none" id="atscmh-rs-code-mode"> | |
| 896 | − <title>enum atscmh_rs_code_mode</title> | |
| 897 | − <tgroup cols="2"> | |
| 898 | − &cs-def; | |
| 899 | − <thead> | |
| 900 | − <row> | |
| 901 | − <entry>ID</entry> | |
| 902 | − <entry>Description</entry> | |
| 903 | − </row> | |
| 904 | − </thead> | |
| 905 | − <tbody valign="top"> | |
| 906 | − <row> | |
| 907 | − <entry id="ATSCMH-RSCODE-211-187"><constant>ATSCMH_RSCODE_211_187</constant></entry> | |
| 908 | − <entry>Reed Solomon code (211,187).</entry> | |
| 909 | − </row><row> | |
| 910 | − <entry id="ATSCMH-RSCODE-223-187"><constant>ATSCMH_RSCODE_223_187</constant></entry> | |
| 911 | − <entry>Reed Solomon code (223,187).</entry> | |
| 912 | − </row><row> | |
| 913 | − <entry id="ATSCMH-RSCODE-235-187"><constant>ATSCMH_RSCODE_235_187</constant></entry> | |
| 914 | − <entry>Reed Solomon code (235,187).</entry> | |
| 915 | − </row><row> | |
| 916 | − <entry id="ATSCMH-RSCODE-RES"><constant>ATSCMH_RSCODE_RES</constant></entry> | |
| 917 | − <entry>Reserved. Shouldn't be used.</entry> | |
| 918 | − </row> | |
| 919 | − </tbody> | |
| 920 | − </tgroup> | |
| 921 | −</table> | |
| 922 | − </section> | |
| 923 | − <section id="DTV-ATSCMH-RS-CODE-MODE-SEC"> | |
| 924 | − <title><constant>DTV_ATSCMH_RS_CODE_MODE_SEC</constant></title> | |
| 925 | − <para>Reed Solomon (RS) code mode (secondary).</para> | |
| 926 | − <para>Possible values are the same as documented on | |
| 927 | − &atscmh-rs-code-mode;:</para> | |
| 928 | − </section> | |
| 929 | − <section id="DTV-ATSCMH-SCCC-BLOCK-MODE"> | |
| 930 | − <title><constant>DTV_ATSCMH_SCCC_BLOCK_MODE</constant></title> | |
| 931 | − <para>Series Concatenated Convolutional Code Block Mode.</para> | |
| 932 | − <para>Possible values are:</para> | |
| 933 | −<table pgwide="1" frame="none" id="atscmh-sccc-block-mode"> | |
| 934 | − <title>enum atscmh_scc_block_mode</title> | |
| 935 | − <tgroup cols="2"> | |
| 936 | − &cs-def; | |
| 937 | − <thead> | |
| 938 | − <row> | |
| 939 | − <entry>ID</entry> | |
| 940 | − <entry>Description</entry> | |
| 941 | − </row> | |
| 942 | − </thead> | |
| 943 | − <tbody valign="top"> | |
| 944 | − <row> | |
| 945 | − <entry id="ATSCMH-SCCC-BLK-SEP"><constant>ATSCMH_SCCC_BLK_SEP</constant></entry> | |
| 946 | − <entry>Separate SCCC: the SCCC outer code mode shall be set independently | |
| 947 | − for each Group Region (A, B, C, D)</entry> | |
| 948 | − </row><row> | |
| 949 | − <entry id="ATSCMH-SCCC-BLK-COMB"><constant>ATSCMH_SCCC_BLK_COMB</constant></entry> | |
| 950 | − <entry>Combined SCCC: all four Regions shall have the same SCCC outer | |
| 951 | − code mode.</entry> | |
| 952 | − </row><row> | |
| 953 | − <entry id="ATSCMH-SCCC-BLK-RES"><constant>ATSCMH_SCCC_BLK_RES</constant></entry> | |
| 954 | − <entry>Reserved. Shouldn't be used.</entry> | |
| 955 | − </row> | |
| 956 | − </tbody> | |
| 957 | − </tgroup> | |
| 958 | −</table> | |
| 959 | − </section> | |
| 960 | − <section id="DTV-ATSCMH-SCCC-CODE-MODE-A"> | |
| 961 | − <title><constant>DTV_ATSCMH_SCCC_CODE_MODE_A</constant></title> | |
| 962 | − <para>Series Concatenated Convolutional Code Rate.</para> | |
| 963 | − <para>Possible values are:</para> | |
| 964 | −<table pgwide="1" frame="none" id="atscmh-sccc-code-mode"> | |
| 965 | − <title>enum atscmh_sccc_code_mode</title> | |
| 966 | − <tgroup cols="2"> | |
| 967 | − &cs-def; | |
| 968 | − <thead> | |
| 969 | − <row> | |
| 970 | − <entry>ID</entry> | |
| 971 | − <entry>Description</entry> | |
| 972 | − </row> | |
| 973 | − </thead> | |
| 974 | − <tbody valign="top"> | |
| 975 | − <row> | |
| 976 | − <entry id="ATSCMH-SCCC-CODE-HLF"><constant>ATSCMH_SCCC_CODE_HLF</constant></entry> | |
| 977 | − <entry>The outer code rate of a SCCC Block is 1/2 rate.</entry> | |
| 978 | − </row><row> | |
| 979 | − <entry id="ATSCMH-SCCC-CODE-QTR"><constant>ATSCMH_SCCC_CODE_QTR</constant></entry> | |
| 980 | − <entry>The outer code rate of a SCCC Block is 1/4 rate.</entry> | |
| 981 | − </row><row> | |
| 982 | − <entry id="ATSCMH-SCCC-CODE-RES"><constant>ATSCMH_SCCC_CODE_RES</constant></entry> | |
| 983 | − <entry>to be documented.</entry> | |
| 984 | − </row> | |
| 985 | − </tbody> | |
| 986 | − </tgroup> | |
| 987 | −</table> | |
| 988 | − </section> | |
| 989 | − <section id="DTV-ATSCMH-SCCC-CODE-MODE-B"> | |
| 990 | − <title><constant>DTV_ATSCMH_SCCC_CODE_MODE_B</constant></title> | |
| 991 | − <para>Series Concatenated Convolutional Code Rate.</para> | |
| 992 | − <para>Possible values are the same as documented on | |
| 993 | − &atscmh-sccc-code-mode;.</para> | |
| 994 | − </section> | |
| 995 | − <section id="DTV-ATSCMH-SCCC-CODE-MODE-C"> | |
| 996 | − <title><constant>DTV_ATSCMH_SCCC_CODE_MODE_C</constant></title> | |
| 997 | − <para>Series Concatenated Convolutional Code Rate.</para> | |
| 998 | − <para>Possible values are the same as documented on | |
| 999 | − &atscmh-sccc-code-mode;.</para> | |
| 1000 | − </section> | |
| 1001 | − <section id="DTV-ATSCMH-SCCC-CODE-MODE-D"> | |
| 1002 | − <title><constant>DTV_ATSCMH_SCCC_CODE_MODE_D</constant></title> | |
| 1003 | − <para>Series Concatenated Convolutional Code Rate.</para> | |
| 1004 | − <para>Possible values are the same as documented on | |
| 1005 | − &atscmh-sccc-code-mode;.</para> | |
| 1006 | − </section> | |
| 1007 | − </section> | |
| 1008 | − <section id="DTV-API-VERSION"> | |
| 1009 | − <title><constant>DTV_API_VERSION</constant></title> | |
| 1010 | − <para>Returns the major/minor version of the DVB API</para> | |
| 1011 | − </section> | |
| 1012 | − <section id="DTV-CODE-RATE-HP"> | |
| 1013 | − <title><constant>DTV_CODE_RATE_HP</constant></title> | |
| 1014 | − <para>Used on terrestrial transmissions. The acceptable values are | |
| 1015 | − the ones described at &fe-transmit-mode-t;. | |
| 1016 | − </para> | |
| 1017 | − </section> | |
| 1018 | − <section id="DTV-CODE-RATE-LP"> | |
| 1019 | − <title><constant>DTV_CODE_RATE_LP</constant></title> | |
| 1020 | − <para>Used on terrestrial transmissions. The acceptable values are | |
| 1021 | − the ones described at &fe-transmit-mode-t;. | |
| 1022 | − </para> | |
| 1023 | − | |
| 1024 | − </section> | |
| 1025 | − | |
| 1026 | − <section id="DTV-GUARD-INTERVAL"> | |
| 1027 | − <title><constant>DTV_GUARD_INTERVAL</constant></title> | |
| 1028 | − | |
| 1029 | − <para>Possible values are:</para> | |
| 1030 | − | |
| 1031 | −<section id="fe-guard-interval-t"> | |
| 1032 | −<title>Modulation guard interval</title> | |
| 1033 | − | |
| 1034 | −<table pgwide="1" frame="none" id="fe-guard-interval"> | |
| 1035 | − <title>enum fe_guard_interval</title> | |
| 1036 | − <tgroup cols="2"> | |
| 1037 | − &cs-def; | |
| 1038 | − <thead> | |
| 1039 | − <row> | |
| 1040 | − <entry>ID</entry> | |
| 1041 | − <entry>Description</entry> | |
| 1042 | − </row> | |
| 1043 | − </thead> | |
| 1044 | − <tbody valign="top"> | |
| 1045 | − <row> | |
| 1046 | − <entry id="GUARD-INTERVAL-AUTO"><constant>GUARD_INTERVAL_AUTO</constant></entry> | |
| 1047 | − <entry>Autodetect the guard interval</entry> | |
| 1048 | − </row><row> | |
| 1049 | − <entry id="GUARD-INTERVAL-1-128"><constant>GUARD_INTERVAL_1_128</constant></entry> | |
| 1050 | − <entry>Guard interval 1/128</entry> | |
| 1051 | − </row><row> | |
| 1052 | − <entry id="GUARD-INTERVAL-1-32"><constant>GUARD_INTERVAL_1_32</constant></entry> | |
| 1053 | − <entry>Guard interval 1/32</entry> | |
| 1054 | − </row><row> | |
| 1055 | − <entry id="GUARD-INTERVAL-1-16"><constant>GUARD_INTERVAL_1_16</constant></entry> | |
| 1056 | − <entry>Guard interval 1/16</entry> | |
| 1057 | − </row><row> | |
| 1058 | − <entry id="GUARD-INTERVAL-1-8"><constant>GUARD_INTERVAL_1_8</constant></entry> | |
| 1059 | − <entry>Guard interval 1/8</entry> | |
| 1060 | − </row><row> | |
| 1061 | − <entry id="GUARD-INTERVAL-1-4"><constant>GUARD_INTERVAL_1_4</constant></entry> | |
| 1062 | − <entry>Guard interval 1/4</entry> | |
| 1063 | − </row><row> | |
| 1064 | − <entry id="GUARD-INTERVAL-19-128"><constant>GUARD_INTERVAL_19_128</constant></entry> | |
| 1065 | − <entry>Guard interval 19/128</entry> | |
| 1066 | − </row><row> | |
| 1067 | − <entry id="GUARD-INTERVAL-19-256"><constant>GUARD_INTERVAL_19_256</constant></entry> | |
| 1068 | − <entry>Guard interval 19/256</entry> | |
| 1069 | − </row><row> | |
| 1070 | − <entry id="GUARD-INTERVAL-PN420"><constant>GUARD_INTERVAL_PN420</constant></entry> | |
| 1071 | − <entry>PN length 420 (1/4)</entry> | |
| 1072 | − </row><row> | |
| 1073 | − <entry id="GUARD-INTERVAL-PN595"><constant>GUARD_INTERVAL_PN595</constant></entry> | |
| 1074 | − <entry>PN length 595 (1/6)</entry> | |
| 1075 | − </row><row> | |
| 1076 | − <entry id="GUARD-INTERVAL-PN945"><constant>GUARD_INTERVAL_PN945</constant></entry> | |
| 1077 | − <entry>PN length 945 (1/9)</entry> | |
| 1078 | − </row> | |
| 1079 | − </tbody> | |
| 1080 | − </tgroup> | |
| 1081 | −</table> | |
| 1082 | − | |
| 1083 | − <para>Notes:</para> | |
| 1084 | − <para>1) If <constant>DTV_GUARD_INTERVAL</constant> is set the <constant>GUARD_INTERVAL_AUTO</constant> the hardware will | |
| 1085 | − try to find the correct guard interval (if capable) and will use TMCC to fill | |
| 1086 | − in the missing parameters.</para> | |
| 1087 | − <para>2) Intervals 1/128, 19/128 and 19/256 are used only for DVB-T2 at present</para> | |
| 1088 | − <para>3) DTMB specifies PN420, PN595 and PN945.</para> | |
| 1089 | −</section> | |
| 1090 | − </section> | |
| 1091 | − <section id="DTV-TRANSMISSION-MODE"> | |
| 1092 | − <title><constant>DTV_TRANSMISSION_MODE</constant></title> | |
| 1093 | − | |
| 1094 | − <para>Specifies the number of carriers used by the standard. | |
| 1095 | − This is used only on OFTM-based standards, e. g. | |
| 1096 | − DVB-T/T2, ISDB-T, DTMB</para> | |
| 1097 | − | |
| 1098 | −<section id="fe-transmit-mode-t"> | |
| 1099 | −<title>enum fe_transmit_mode: Number of carriers per channel</title> | |
| 1100 | − | |
| 1101 | −<table pgwide="1" frame="none" id="fe-transmit-mode"> | |
| 1102 | − <title>enum fe_transmit_mode</title> | |
| 1103 | − <tgroup cols="2"> | |
| 1104 | − &cs-def; | |
| 1105 | − <thead> | |
| 1106 | − <row> | |
| 1107 | − <entry>ID</entry> | |
| 1108 | − <entry>Description</entry> | |
| 1109 | − </row> | |
| 1110 | − </thead> | |
| 1111 | − <tbody valign="top"> | |
| 1112 | − <row> | |
| 1113 | − <entry id="TRANSMISSION-MODE-AUTO"><constant>TRANSMISSION_MODE_AUTO</constant></entry> | |
| 1114 | − <entry>Autodetect transmission mode. The hardware will try to find | |
| 1115 | − the correct FFT-size (if capable) to fill in the missing | |
| 1116 | − parameters.</entry> | |
| 1117 | − </row><row> | |
| 1118 | − <entry id="TRANSMISSION-MODE-1K"><constant>TRANSMISSION_MODE_1K</constant></entry> | |
| 1119 | − <entry>Transmission mode 1K</entry> | |
| 1120 | − </row><row> | |
| 1121 | − <entry id="TRANSMISSION-MODE-2K"><constant>TRANSMISSION_MODE_2K</constant></entry> | |
| 1122 | − <entry>Transmission mode 2K</entry> | |
| 1123 | − </row><row> | |
| 1124 | − <entry id="TRANSMISSION-MODE-8K"><constant>TRANSMISSION_MODE_8K</constant></entry> | |
| 1125 | − <entry>Transmission mode 8K</entry> | |
| 1126 | − </row><row> | |
| 1127 | − <entry id="TRANSMISSION-MODE-4K"><constant>TRANSMISSION_MODE_4K</constant></entry> | |
| 1128 | − <entry>Transmission mode 4K</entry> | |
| 1129 | − </row><row> | |
| 1130 | − <entry id="TRANSMISSION-MODE-16K"><constant>TRANSMISSION_MODE_16K</constant></entry> | |
| 1131 | − <entry>Transmission mode 16K</entry> | |
| 1132 | − </row><row> | |
| 1133 | − <entry id="TRANSMISSION-MODE-32K"><constant>TRANSMISSION_MODE_32K</constant></entry> | |
| 1134 | − <entry>Transmission mode 32K</entry> | |
| 1135 | − </row><row> | |
| 1136 | − <entry id="TRANSMISSION-MODE-C1"><constant>TRANSMISSION_MODE_C1</constant></entry> | |
| 1137 | − <entry>Single Carrier (C=1) transmission mode (DTMB)</entry> | |
| 1138 | − </row><row> | |
| 1139 | − <entry id="TRANSMISSION-MODE-C3780"><constant>TRANSMISSION_MODE_C3780</constant></entry> | |
| 1140 | − <entry>Multi Carrier (C=3780) transmission mode (DTMB)</entry> | |
| 1141 | − </row> | |
| 1142 | − </tbody> | |
| 1143 | − </tgroup> | |
| 1144 | −</table> | |
| 1145 | − | |
| 1146 | − | |
| 1147 | − <para>Notes:</para> | |
| 1148 | − <para>1) ISDB-T supports three carrier/symbol-size: 8K, 4K, 2K. It is called | |
| 1149 | − 'mode' in the standard: Mode 1 is 2K, mode 2 is 4K, mode 3 is 8K</para> | |
| 1150 | − | |
| 1151 | − <para>2) If <constant>DTV_TRANSMISSION_MODE</constant> is set the <constant>TRANSMISSION_MODE_AUTO</constant> the | |
| 1152 | − hardware will try to find the correct FFT-size (if capable) and will | |
| 1153 | − use TMCC to fill in the missing parameters.</para> | |
| 1154 | − <para>3) DVB-T specifies 2K and 8K as valid sizes.</para> | |
| 1155 | − <para>4) DVB-T2 specifies 1K, 2K, 4K, 8K, 16K and 32K.</para> | |
| 1156 | − <para>5) DTMB specifies C1 and C3780.</para> | |
| 1157 | −</section> | |
| 1158 | − </section> | |
| 1159 | − <section id="DTV-HIERARCHY"> | |
| 1160 | − <title><constant>DTV_HIERARCHY</constant></title> | |
| 1161 | − <para>Frontend hierarchy</para> | |
| 1162 | − | |
| 1163 | − | |
| 1164 | −<section id="fe-hierarchy-t"> | |
| 1165 | −<title>Frontend hierarchy</title> | |
| 1166 | − | |
| 1167 | −<table pgwide="1" frame="none" id="fe-hierarchy"> | |
| 1168 | − <title>enum fe_hierarchy</title> | |
| 1169 | − <tgroup cols="2"> | |
| 1170 | − &cs-def; | |
| 1171 | − <thead> | |
| 1172 | − <row> | |
| 1173 | − <entry>ID</entry> | |
| 1174 | − <entry>Description</entry> | |
| 1175 | − </row> | |
| 1176 | − </thead> | |
| 1177 | − <tbody valign="top"> | |
| 1178 | − <row> | |
| 1179 | − <entry id="HIERARCHY-NONE"><constant>HIERARCHY_NONE</constant></entry> | |
| 1180 | − <entry>No hierarchy</entry> | |
| 1181 | − </row><row> | |
| 1182 | − <entry id="HIERARCHY-AUTO"><constant>HIERARCHY_AUTO</constant></entry> | |
| 1183 | − <entry>Autodetect hierarchy (if supported)</entry> | |
| 1184 | − </row><row> | |
| 1185 | − <entry id="HIERARCHY-1"><constant>HIERARCHY_1</constant></entry> | |
| 1186 | − <entry>Hierarchy 1</entry> | |
| 1187 | − </row><row> | |
| 1188 | − <entry id="HIERARCHY-2"><constant>HIERARCHY_2</constant></entry> | |
| 1189 | − <entry>Hierarchy 2</entry> | |
| 1190 | − </row><row> | |
| 1191 | − <entry id="HIERARCHY-4"><constant>HIERARCHY_4</constant></entry> | |
| 1192 | − <entry>Hierarchy 4</entry> | |
| 1193 | − </row> | |
| 1194 | − </tbody> | |
| 1195 | − </tgroup> | |
| 1196 | −</table> | |
| 1197 | −</section> | |
| 1198 | − | |
| 1199 | − </section> | |
| 1200 | − <section id="DTV-STREAM-ID"> | |
| 1201 | − <title><constant>DTV_STREAM_ID</constant></title> | |
| 1202 | − <para>DVB-S2, DVB-T2 and ISDB-S support the transmission of several | |
| 1203 | − streams on a single transport stream. | |
| 1204 | − This property enables the DVB driver to handle substream filtering, | |
| 1205 | − when supported by the hardware. | |
| 1206 | − By default, substream filtering is disabled. | |
| 1207 | − </para><para> | |
| 1208 | − For DVB-S2 and DVB-T2, the valid substream id range is from 0 to 255. | |
| 1209 | − </para><para> | |
| 1210 | − For ISDB, the valid substream id range is from 1 to 65535. | |
| 1211 | − </para><para> | |
| 1212 | − To disable it, you should use the special macro NO_STREAM_ID_FILTER. | |
| 1213 | − </para><para> | |
| 1214 | − Note: any value outside the id range also disables filtering. | |
| 1215 | − </para> | |
| 1216 | − </section> | |
| 1217 | − <section id="DTV-DVBT2-PLP-ID-LEGACY"> | |
| 1218 | − <title><constant>DTV_DVBT2_PLP_ID_LEGACY</constant></title> | |
| 1219 | − <para>Obsolete, replaced with DTV_STREAM_ID.</para> | |
| 1220 | − </section> | |
| 1221 | − <section id="DTV-ENUM-DELSYS"> | |
| 1222 | − <title><constant>DTV_ENUM_DELSYS</constant></title> | |
| 1223 | − <para>A Multi standard frontend needs to advertise the delivery systems provided. | |
| 1224 | − Applications need to enumerate the provided delivery systems, before using | |
| 1225 | − any other operation with the frontend. Prior to it's introduction, | |
| 1226 | − FE_GET_INFO was used to determine a frontend type. A frontend which | |
| 1227 | − provides more than a single delivery system, FE_GET_INFO doesn't help much. | |
| 1228 | − Applications which intends to use a multistandard frontend must enumerate | |
| 1229 | − the delivery systems associated with it, rather than trying to use | |
| 1230 | − FE_GET_INFO. In the case of a legacy frontend, the result is just the same | |
| 1231 | − as with FE_GET_INFO, but in a more structured format </para> | |
| 1232 | − </section> | |
| 1233 | − <section id="DTV-INTERLEAVING"> | |
| 1234 | − <title><constant>DTV_INTERLEAVING</constant></title> | |
| 1235 | − | |
| 1236 | −<para>Time interleaving to be used. Currently, used only on DTMB.</para> | |
| 1237 | − | |
| 1238 | −<table pgwide="1" frame="none" id="fe-interleaving"> | |
| 1239 | − <title>enum fe_interleaving</title> | |
| 1240 | − <tgroup cols="2"> | |
| 1241 | − &cs-def; | |
| 1242 | − <thead> | |
| 1243 | − <row> | |
| 1244 | − <entry>ID</entry> | |
| 1245 | − <entry>Description</entry> | |
| 1246 | − </row> | |
| 1247 | − </thead> | |
| 1248 | − <tbody valign="top"> | |
| 1249 | − <row> | |
| 1250 | − <entry id="INTERLEAVING-NONE"><constant>INTERLEAVING_NONE</constant></entry> | |
| 1251 | − <entry>No interleaving.</entry> | |
| 1252 | − </row><row> | |
| 1253 | − <entry id="INTERLEAVING-AUTO"><constant>INTERLEAVING_AUTO</constant></entry> | |
| 1254 | − <entry>Auto-detect interleaving.</entry> | |
| 1255 | − </row><row> | |
| 1256 | − <entry id="INTERLEAVING-240"><constant>INTERLEAVING_240</constant></entry> | |
| 1257 | − <entry>Interleaving of 240 symbols.</entry> | |
| 1258 | − </row><row> | |
| 1259 | − <entry id="INTERLEAVING-720"><constant>INTERLEAVING_720</constant></entry> | |
| 1260 | − <entry>Interleaving of 720 symbols.</entry> | |
| 1261 | − </row> | |
| 1262 | − </tbody> | |
| 1263 | − </tgroup> | |
| 1264 | −</table> | |
| 1265 | − | |
| 1266 | − </section> | |
| 1267 | − <section id="DTV-LNA"> | |
| 1268 | − <title><constant>DTV_LNA</constant></title> | |
| 1269 | − <para>Low-noise amplifier.</para> | |
| 1270 | − <para>Hardware might offer controllable LNA which can be set manually | |
| 1271 | − using that parameter. Usually LNA could be found only from | |
| 1272 | − terrestrial devices if at all.</para> | |
| 1273 | − <para>Possible values: 0, 1, LNA_AUTO</para> | |
| 1274 | − <para>0, LNA off</para> | |
| 1275 | − <para>1, LNA on</para> | |
| 1276 | − <para>use the special macro LNA_AUTO to set LNA auto</para> | |
| 1277 | − </section> | |
| 1278 | −</section> | |
| 1279 | − | |
| 1280 | − <section id="frontend-stat-properties"> | |
| 1281 | − <title>Frontend statistics indicators</title> | |
| 1282 | − <para>The values are returned via <constant>dtv_property.stat</constant>. | |
| 1283 | − If the property is supported, <constant>dtv_property.stat.len</constant> is bigger than zero.</para> | |
| 1284 | − <para>For most delivery systems, <constant>dtv_property.stat.len</constant> | |
| 1285 | − will be 1 if the stats is supported, and the properties will | |
| 1286 | − return a single value for each parameter.</para> | |
| 1287 | − <para>It should be noted, however, that new OFDM delivery systems | |
| 1288 | − like ISDB can use different modulation types for each group of | |
| 1289 | − carriers. On such standards, up to 3 groups of statistics can be | |
| 1290 | − provided, and <constant>dtv_property.stat.len</constant> is updated | |
| 1291 | − to reflect the "global" metrics, plus one metric per each carrier | |
| 1292 | − group (called "layer" on ISDB).</para> | |
| 1293 | − <para>So, in order to be consistent with other delivery systems, the first | |
| 1294 | − value at <link linkend="dtv-stats"><constant>dtv_property.stat.dtv_stats</constant></link> | |
| 1295 | − array refers to the global metric. The other elements of the array | |
| 1296 | − represent each layer, starting from layer A(index 1), | |
| 1297 | − layer B (index 2) and so on.</para> | |
| 1298 | − <para>The number of filled elements are stored at <constant>dtv_property.stat.len</constant>.</para> | |
| 1299 | − <para>Each element of the <constant>dtv_property.stat.dtv_stats</constant> array consists on two elements:</para> | |
| 1300 | − <itemizedlist mark='opencircle'> | |
| 1301 | − <listitem><para><constant>svalue</constant> or <constant>uvalue</constant>, where | |
| 1302 | − <constant>svalue</constant> is for signed values of the measure (dB measures) | |
| 1303 | − and <constant>uvalue</constant> is for unsigned values (counters, relative scale)</para></listitem> | |
| 1304 | − <listitem><para><constant>scale</constant> - Scale for the value. It can be:</para> | |
| 1305 | − <itemizedlist mark='bullet' id="fecap-scale-params"> | |
| 1306 | − <listitem id="FE-SCALE-NOT-AVAILABLE"><para><constant>FE_SCALE_NOT_AVAILABLE</constant> - The parameter is supported by the frontend, but it was not possible to collect it (could be a transitory or permanent condition)</para></listitem> | |
| 1307 | − <listitem id="FE-SCALE-DECIBEL"><para><constant>FE_SCALE_DECIBEL</constant> - parameter is a signed value, measured in 1/1000 dB</para></listitem> | |
| 1308 | − <listitem id="FE-SCALE-RELATIVE"><para><constant>FE_SCALE_RELATIVE</constant> - parameter is a unsigned value, where 0 means 0% and 65535 means 100%.</para></listitem> | |
| 1309 | − <listitem id="FE-SCALE-COUNTER"><para><constant>FE_SCALE_COUNTER</constant> - parameter is a unsigned value that counts the occurrence of an event, like bit error, block error, or lapsed time.</para></listitem> | |
| 1310 | − </itemizedlist> | |
| 1311 | − </listitem> | |
| 1312 | − </itemizedlist> | |
| 1313 | − <section id="DTV-STAT-SIGNAL-STRENGTH"> | |
| 1314 | − <title><constant>DTV_STAT_SIGNAL_STRENGTH</constant></title> | |
| 1315 | − <para>Indicates the signal strength level at the analog part of the tuner or of the demod.</para> | |
| 1316 | − <para>Possible scales for this metric are:</para> | |
| 1317 | − <itemizedlist mark='bullet'> | |
| 1318 | − <listitem><para><constant>FE_SCALE_NOT_AVAILABLE</constant> - it failed to measure it, or the measurement was not complete yet.</para></listitem> | |
| 1319 | − <listitem><para><constant>FE_SCALE_DECIBEL</constant> - signal strength is in 0.001 dBm units, power measured in miliwatts. This value is generally negative.</para></listitem> | |
| 1320 | − <listitem><para><constant>FE_SCALE_RELATIVE</constant> - The frontend provides a 0% to 100% measurement for power (actually, 0 to 65535).</para></listitem> | |
| 1321 | − </itemizedlist> | |
| 1322 | − </section> | |
| 1323 | − <section id="DTV-STAT-CNR"> | |
| 1324 | − <title><constant>DTV_STAT_CNR</constant></title> | |
| 1325 | − <para>Indicates the Signal to Noise ratio for the main carrier.</para> | |
| 1326 | − <para>Possible scales for this metric are:</para> | |
| 1327 | − <itemizedlist mark='bullet'> | |
| 1328 | − <listitem><para><constant>FE_SCALE_NOT_AVAILABLE</constant> - it failed to measure it, or the measurement was not complete yet.</para></listitem> | |
| 1329 | − <listitem><para><constant>FE_SCALE_DECIBEL</constant> - Signal/Noise ratio is in 0.001 dB units.</para></listitem> | |
| 1330 | − <listitem><para><constant>FE_SCALE_RELATIVE</constant> - The frontend provides a 0% to 100% measurement for Signal/Noise (actually, 0 to 65535).</para></listitem> | |
| 1331 | − </itemizedlist> | |
| 1332 | − </section> | |
| 1333 | − <section id="DTV-STAT-PRE-ERROR-BIT-COUNT"> | |
| 1334 | − <title><constant>DTV_STAT_PRE_ERROR_BIT_COUNT</constant></title> | |
| 1335 | − <para>Measures the number of bit errors before the forward error correction (FEC) on the inner coding block (before Viterbi, LDPC or other inner code).</para> | |
| 1336 | − <para>This measure is taken during the same interval as <constant>DTV_STAT_PRE_TOTAL_BIT_COUNT</constant>.</para> | |
| 1337 | − <para>In order to get the BER (Bit Error Rate) measurement, it should be divided by | |
| 1338 | − <link linkend="DTV-STAT-PRE-TOTAL-BIT-COUNT"><constant>DTV_STAT_PRE_TOTAL_BIT_COUNT</constant></link>.</para> | |
| 1339 | − <para>This measurement is monotonically increased, as the frontend gets more bit count measurements. | |
| 1340 | − The frontend may reset it when a channel/transponder is tuned.</para> | |
| 1341 | − <para>Possible scales for this metric are:</para> | |
| 1342 | − <itemizedlist mark='bullet'> | |
| 1343 | − <listitem><para><constant>FE_SCALE_NOT_AVAILABLE</constant> - it failed to measure it, or the measurement was not complete yet.</para></listitem> | |
| 1344 | − <listitem><para><constant>FE_SCALE_COUNTER</constant> - Number of error bits counted before the inner coding.</para></listitem> | |
| 1345 | − </itemizedlist> | |
| 1346 | − </section> | |
| 1347 | − <section id="DTV-STAT-PRE-TOTAL-BIT-COUNT"> | |
| 1348 | − <title><constant>DTV_STAT_PRE_TOTAL_BIT_COUNT</constant></title> | |
| 1349 | − <para>Measures the amount of bits received before the inner code block, during the same period as | |
| 1350 | − <link linkend="DTV-STAT-PRE-ERROR-BIT-COUNT"><constant>DTV_STAT_PRE_ERROR_BIT_COUNT</constant></link> measurement was taken.</para> | |
| 1351 | − <para>It should be noted that this measurement can be smaller than the total amount of bits on the transport stream, | |
| 1352 | − as the frontend may need to manually restart the measurement, losing some data between each measurement interval.</para> | |
| 1353 | − <para>This measurement is monotonically increased, as the frontend gets more bit count measurements. | |
| 1354 | − The frontend may reset it when a channel/transponder is tuned.</para> | |
| 1355 | − <para>Possible scales for this metric are:</para> | |
| 1356 | − <itemizedlist mark='bullet'> | |
| 1357 | − <listitem><para><constant>FE_SCALE_NOT_AVAILABLE</constant> - it failed to measure it, or the measurement was not complete yet.</para></listitem> | |
| 1358 | − <listitem><para><constant>FE_SCALE_COUNTER</constant> - Number of bits counted while measuring | |
| 1359 | − <link linkend="DTV-STAT-PRE-ERROR-BIT-COUNT"><constant>DTV_STAT_PRE_ERROR_BIT_COUNT</constant></link>.</para></listitem> | |
| 1360 | − </itemizedlist> | |
| 1361 | − </section> | |
| 1362 | − <section id="DTV-STAT-POST-ERROR-BIT-COUNT"> | |
| 1363 | − <title><constant>DTV_STAT_POST_ERROR_BIT_COUNT</constant></title> | |
| 1364 | − <para>Measures the number of bit errors after the forward error correction (FEC) done by inner code block (after Viterbi, LDPC or other inner code).</para> | |
| 1365 | − <para>This measure is taken during the same interval as <constant>DTV_STAT_POST_TOTAL_BIT_COUNT</constant>.</para> | |
| 1366 | − <para>In order to get the BER (Bit Error Rate) measurement, it should be divided by | |
| 1367 | − <link linkend="DTV-STAT-POST-TOTAL-BIT-COUNT"><constant>DTV_STAT_POST_TOTAL_BIT_COUNT</constant></link>.</para> | |
| 1368 | − <para>This measurement is monotonically increased, as the frontend gets more bit count measurements. | |
| 1369 | − The frontend may reset it when a channel/transponder is tuned.</para> | |
| 1370 | − <para>Possible scales for this metric are:</para> | |
| 1371 | − <itemizedlist mark='bullet'> | |
| 1372 | − <listitem><para><constant>FE_SCALE_NOT_AVAILABLE</constant> - it failed to measure it, or the measurement was not complete yet.</para></listitem> | |
| 1373 | − <listitem><para><constant>FE_SCALE_COUNTER</constant> - Number of error bits counted after the inner coding.</para></listitem> | |
| 1374 | − </itemizedlist> | |
| 1375 | − </section> | |
| 1376 | − <section id="DTV-STAT-POST-TOTAL-BIT-COUNT"> | |
| 1377 | − <title><constant>DTV_STAT_POST_TOTAL_BIT_COUNT</constant></title> | |
| 1378 | − <para>Measures the amount of bits received after the inner coding, during the same period as | |
| 1379 | − <link linkend="DTV-STAT-POST-ERROR-BIT-COUNT"><constant>DTV_STAT_POST_ERROR_BIT_COUNT</constant></link> measurement was taken.</para> | |
| 1380 | − <para>It should be noted that this measurement can be smaller than the total amount of bits on the transport stream, | |
| 1381 | − as the frontend may need to manually restart the measurement, losing some data between each measurement interval.</para> | |
| 1382 | − <para>This measurement is monotonically increased, as the frontend gets more bit count measurements. | |
| 1383 | − The frontend may reset it when a channel/transponder is tuned.</para> | |
| 1384 | − <para>Possible scales for this metric are:</para> | |
| 1385 | − <itemizedlist mark='bullet'> | |
| 1386 | − <listitem><para><constant>FE_SCALE_NOT_AVAILABLE</constant> - it failed to measure it, or the measurement was not complete yet.</para></listitem> | |
| 1387 | − <listitem><para><constant>FE_SCALE_COUNTER</constant> - Number of bits counted while measuring | |
| 1388 | − <link linkend="DTV-STAT-POST-ERROR-BIT-COUNT"><constant>DTV_STAT_POST_ERROR_BIT_COUNT</constant></link>.</para></listitem> | |
| 1389 | − </itemizedlist> | |
| 1390 | − </section> | |
| 1391 | − <section id="DTV-STAT-ERROR-BLOCK-COUNT"> | |
| 1392 | − <title><constant>DTV_STAT_ERROR_BLOCK_COUNT</constant></title> | |
| 1393 | − <para>Measures the number of block errors after the outer forward error correction coding (after Reed-Solomon or other outer code).</para> | |
| 1394 | − <para>This measurement is monotonically increased, as the frontend gets more bit count measurements. | |
| 1395 | − The frontend may reset it when a channel/transponder is tuned.</para> | |
| 1396 | − <para>Possible scales for this metric are:</para> | |
| 1397 | − <itemizedlist mark='bullet'> | |
| 1398 | − <listitem><para><constant>FE_SCALE_NOT_AVAILABLE</constant> - it failed to measure it, or the measurement was not complete yet.</para></listitem> | |
| 1399 | − <listitem><para><constant>FE_SCALE_COUNTER</constant> - Number of error blocks counted after the outer coding.</para></listitem> | |
| 1400 | − </itemizedlist> | |
| 1401 | − </section> | |
| 1402 | − <section id="DTV-STAT-TOTAL-BLOCK-COUNT"> | |
| 1403 | − <title><constant>DTV-STAT_TOTAL_BLOCK_COUNT</constant></title> | |
| 1404 | − <para>Measures the total number of blocks received during the same period as | |
| 1405 | − <link linkend="DTV-STAT-ERROR-BLOCK-COUNT"><constant>DTV_STAT_ERROR_BLOCK_COUNT</constant></link> measurement was taken.</para> | |
| 1406 | − <para>It can be used to calculate the PER indicator, by dividing | |
| 1407 | − <link linkend="DTV-STAT-ERROR-BLOCK-COUNT"><constant>DTV_STAT_ERROR_BLOCK_COUNT</constant></link> | |
| 1408 | − by <link linkend="DTV-STAT-TOTAL-BLOCK-COUNT"><constant>DTV-STAT-TOTAL-BLOCK-COUNT</constant></link>.</para> | |
| 1409 | − <para>Possible scales for this metric are:</para> | |
| 1410 | − <itemizedlist mark='bullet'> | |
| 1411 | − <listitem><para><constant>FE_SCALE_NOT_AVAILABLE</constant> - it failed to measure it, or the measurement was not complete yet.</para></listitem> | |
| 1412 | − <listitem><para><constant>FE_SCALE_COUNTER</constant> - Number of blocks counted while measuring | |
| 1413 | − <link linkend="DTV-STAT-ERROR-BLOCK-COUNT"><constant>DTV_STAT_ERROR_BLOCK_COUNT</constant></link>.</para></listitem> | |
| 1414 | − </itemizedlist> | |
| 1415 | − </section> | |
| 1416 | − </section> | |
| 1417 | − | |
| 1418 | − <section id="frontend-property-terrestrial-systems"> | |
| 1419 | − <title>Properties used on terrestrial delivery systems</title> | |
| 1420 | − <section id="dvbt-params"> | |
| 1421 | − <title>DVB-T delivery system</title> | |
| 1422 | − <para>The following parameters are valid for DVB-T:</para> | |
| 1423 | − <itemizedlist mark='opencircle'> | |
| 1424 | − <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem> | |
| 1425 | − <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem> | |
| 1426 | − <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem> | |
| 1427 | − <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem> | |
| 1428 | − <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem> | |
| 1429 | − <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem> | |
| 1430 | − <listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem> | |
| 1431 | − <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem> | |
| 1432 | − <listitem><para><link linkend="DTV-CODE-RATE-HP"><constant>DTV_CODE_RATE_HP</constant></link></para></listitem> | |
| 1433 | − <listitem><para><link linkend="DTV-CODE-RATE-LP"><constant>DTV_CODE_RATE_LP</constant></link></para></listitem> | |
| 1434 | − <listitem><para><link linkend="DTV-GUARD-INTERVAL"><constant>DTV_GUARD_INTERVAL</constant></link></para></listitem> | |
| 1435 | − <listitem><para><link linkend="DTV-TRANSMISSION-MODE"><constant>DTV_TRANSMISSION_MODE</constant></link></para></listitem> | |
| 1436 | − <listitem><para><link linkend="DTV-HIERARCHY"><constant>DTV_HIERARCHY</constant></link></para></listitem> | |
| 1437 | − <listitem><para><link linkend="DTV-LNA"><constant>DTV_LNA</constant></link></para></listitem> | |
| 1438 | − </itemizedlist> | |
| 1439 | − <para>In addition, the <link linkend="frontend-stat-properties">DTV QoS statistics</link> are also valid.</para> | |
| 1440 | − </section> | |
| 1441 | − <section id="dvbt2-params"> | |
| 1442 | − <title>DVB-T2 delivery system</title> | |
| 1443 | − <para>DVB-T2 support is currently in the early stages | |
| 1444 | − of development, so expect that this section maygrow and become | |
| 1445 | − more detailed with time.</para> | |
| 1446 | − <para>The following parameters are valid for DVB-T2:</para> | |
| 1447 | − <itemizedlist mark='opencircle'> | |
| 1448 | − <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem> | |
| 1449 | − <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem> | |
| 1450 | − <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem> | |
| 1451 | − <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem> | |
| 1452 | − <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem> | |
| 1453 | − <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem> | |
| 1454 | − <listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem> | |
| 1455 | − <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem> | |
| 1456 | − <listitem><para><link linkend="DTV-CODE-RATE-HP"><constant>DTV_CODE_RATE_HP</constant></link></para></listitem> | |
| 1457 | − <listitem><para><link linkend="DTV-CODE-RATE-LP"><constant>DTV_CODE_RATE_LP</constant></link></para></listitem> | |
| 1458 | − <listitem><para><link linkend="DTV-GUARD-INTERVAL"><constant>DTV_GUARD_INTERVAL</constant></link></para></listitem> | |
| 1459 | − <listitem><para><link linkend="DTV-TRANSMISSION-MODE"><constant>DTV_TRANSMISSION_MODE</constant></link></para></listitem> | |
| 1460 | − <listitem><para><link linkend="DTV-HIERARCHY"><constant>DTV_HIERARCHY</constant></link></para></listitem> | |
| 1461 | − <listitem><para><link linkend="DTV-STREAM-ID"><constant>DTV_STREAM_ID</constant></link></para></listitem> | |
| 1462 | − <listitem><para><link linkend="DTV-LNA"><constant>DTV_LNA</constant></link></para></listitem> | |
| 1463 | − </itemizedlist> | |
| 1464 | − <para>In addition, the <link linkend="frontend-stat-properties">DTV QoS statistics</link> are also valid.</para> | |
| 1465 | − </section> | |
| 1466 | − <section id="isdbt"> | |
| 1467 | − <title>ISDB-T delivery system</title> | |
| 1468 | − <para>This ISDB-T/ISDB-Tsb API extension should reflect all information | |
| 1469 | − needed to tune any ISDB-T/ISDB-Tsb hardware. Of course it is possible | |
| 1470 | − that some very sophisticated devices won't need certain parameters to | |
| 1471 | − tune.</para> | |
| 1472 | − <para>The information given here should help application writers to know how | |
| 1473 | − to handle ISDB-T and ISDB-Tsb hardware using the Linux DVB-API.</para> | |
| 1474 | − <para>The details given here about ISDB-T and ISDB-Tsb are just enough to | |
| 1475 | − basically show the dependencies between the needed parameter values, | |
| 1476 | − but surely some information is left out. For more detailed information | |
| 1477 | − see the following documents:</para> | |
| 1478 | − <para>ARIB STD-B31 - "Transmission System for Digital Terrestrial | |
| 1479 | − Television Broadcasting" and</para> | |
| 1480 | − <para>ARIB TR-B14 - "Operational Guidelines for Digital Terrestrial | |
| 1481 | − Television Broadcasting".</para> | |
| 1482 | − <para>In order to understand the ISDB specific parameters, | |
| 1483 | − one has to have some knowledge the channel structure in | |
| 1484 | − ISDB-T and ISDB-Tsb. I.e. it has to be known to | |
| 1485 | − the reader that an ISDB-T channel consists of 13 segments, | |
| 1486 | − that it can have up to 3 layer sharing those segments, | |
| 1487 | − and things like that.</para> | |
| 1488 | − <para>The following parameters are valid for ISDB-T:</para> | |
| 1489 | − <itemizedlist mark='opencircle'> | |
| 1490 | − <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem> | |
| 1491 | − <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem> | |
| 1492 | − <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem> | |
| 1493 | − <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem> | |
| 1494 | − <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem> | |
| 1495 | − <listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem> | |
| 1496 | − <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem> | |
| 1497 | − <listitem><para><link linkend="DTV-GUARD-INTERVAL"><constant>DTV_GUARD_INTERVAL</constant></link></para></listitem> | |
| 1498 | − <listitem><para><link linkend="DTV-TRANSMISSION-MODE"><constant>DTV_TRANSMISSION_MODE</constant></link></para></listitem> | |
| 1499 | − <listitem><para><link linkend="DTV-ISDBT-LAYER-ENABLED"><constant>DTV_ISDBT_LAYER_ENABLED</constant></link></para></listitem> | |
| 1500 | − <listitem><para><link linkend="DTV-ISDBT-PARTIAL-RECEPTION"><constant>DTV_ISDBT_PARTIAL_RECEPTION</constant></link></para></listitem> | |
| 1501 | − <listitem><para><link linkend="DTV-ISDBT-SOUND-BROADCASTING"><constant>DTV_ISDBT_SOUND_BROADCASTING</constant></link></para></listitem> | |
| 1502 | − <listitem><para><link linkend="DTV-ISDBT-SB-SUBCHANNEL-ID"><constant>DTV_ISDBT_SB_SUBCHANNEL_ID</constant></link></para></listitem> | |
| 1503 | − <listitem><para><link linkend="DTV-ISDBT-SB-SEGMENT-IDX"><constant>DTV_ISDBT_SB_SEGMENT_IDX</constant></link></para></listitem> | |
| 1504 | − <listitem><para><link linkend="DTV-ISDBT-SB-SEGMENT-COUNT"><constant>DTV_ISDBT_SB_SEGMENT_COUNT</constant></link></para></listitem> | |
| 1505 | − <listitem><para><link linkend="DTV-ISDBT-LAYER-FEC"><constant>DTV_ISDBT_LAYERA_FEC</constant></link></para></listitem> | |
| 1506 | − <listitem><para><link linkend="DTV-ISDBT-LAYER-MODULATION"><constant>DTV_ISDBT_LAYERA_MODULATION</constant></link></para></listitem> | |
| 1507 | − <listitem><para><link linkend="DTV-ISDBT-LAYER-SEGMENT-COUNT"><constant>DTV_ISDBT_LAYERA_SEGMENT_COUNT</constant></link></para></listitem> | |
| 1508 | − <listitem><para><link linkend="DTV-ISDBT-LAYER-TIME-INTERLEAVING"><constant>DTV_ISDBT_LAYERA_TIME_INTERLEAVING</constant></link></para></listitem> | |
| 1509 | − <listitem><para><link linkend="DTV-ISDBT-LAYER-FEC"><constant>DTV_ISDBT_LAYERB_FEC</constant></link></para></listitem> | |
| 1510 | − <listitem><para><link linkend="DTV-ISDBT-LAYER-MODULATION"><constant>DTV_ISDBT_LAYERB_MODULATION</constant></link></para></listitem> | |
| 1511 | − <listitem><para><link linkend="DTV-ISDBT-LAYER-SEGMENT-COUNT"><constant>DTV_ISDBT_LAYERB_SEGMENT_COUNT</constant></link></para></listitem> | |
| 1512 | − <listitem><para><link linkend="DTV-ISDBT-LAYER-TIME-INTERLEAVING"><constant>DTV_ISDBT_LAYERB_TIME_INTERLEAVING</constant></link></para></listitem> | |
| 1513 | − <listitem><para><link linkend="DTV-ISDBT-LAYER-FEC"><constant>DTV_ISDBT_LAYERC_FEC</constant></link></para></listitem> | |
| 1514 | − <listitem><para><link linkend="DTV-ISDBT-LAYER-MODULATION"><constant>DTV_ISDBT_LAYERC_MODULATION</constant></link></para></listitem> | |
| 1515 | − <listitem><para><link linkend="DTV-ISDBT-LAYER-SEGMENT-COUNT"><constant>DTV_ISDBT_LAYERC_SEGMENT_COUNT</constant></link></para></listitem> | |
| 1516 | − <listitem><para><link linkend="DTV-ISDBT-LAYER-TIME-INTERLEAVING"><constant>DTV_ISDBT_LAYERC_TIME_INTERLEAVING</constant></link></para></listitem> | |
| 1517 | − </itemizedlist> | |
| 1518 | − <para>In addition, the <link linkend="frontend-stat-properties">DTV QoS statistics</link> are also valid.</para> | |
| 1519 | − </section> | |
| 1520 | − <section id="atsc-params"> | |
| 1521 | − <title>ATSC delivery system</title> | |
| 1522 | − <para>The following parameters are valid for ATSC:</para> | |
| 1523 | − <itemizedlist mark='opencircle'> | |
| 1524 | − <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem> | |
| 1525 | − <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem> | |
| 1526 | − <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem> | |
| 1527 | − <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem> | |
| 1528 | − <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem> | |
| 1529 | − <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem> | |
| 1530 | − <listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem> | |
| 1531 | − </itemizedlist> | |
| 1532 | − <para>In addition, the <link linkend="frontend-stat-properties">DTV QoS statistics</link> are also valid.</para> | |
| 1533 | − </section> | |
| 1534 | − <section id="atscmh-params"> | |
| 1535 | − <title>ATSC-MH delivery system</title> | |
| 1536 | − <para>The following parameters are valid for ATSC-MH:</para> | |
| 1537 | − <itemizedlist mark='opencircle'> | |
| 1538 | − <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem> | |
| 1539 | − <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem> | |
| 1540 | − <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem> | |
| 1541 | − <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem> | |
| 1542 | − <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem> | |
| 1543 | − <listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem> | |
| 1544 | − <listitem><para><link linkend="DTV-ATSCMH-FIC-VER"><constant>DTV_ATSCMH_FIC_VER</constant></link></para></listitem> | |
| 1545 | − <listitem><para><link linkend="DTV-ATSCMH-PARADE-ID"><constant>DTV_ATSCMH_PARADE_ID</constant></link></para></listitem> | |
| 1546 | − <listitem><para><link linkend="DTV-ATSCMH-NOG"><constant>DTV_ATSCMH_NOG</constant></link></para></listitem> | |
| 1547 | − <listitem><para><link linkend="DTV-ATSCMH-TNOG"><constant>DTV_ATSCMH_TNOG</constant></link></para></listitem> | |
| 1548 | − <listitem><para><link linkend="DTV-ATSCMH-SGN"><constant>DTV_ATSCMH_SGN</constant></link></para></listitem> | |
| 1549 | − <listitem><para><link linkend="DTV-ATSCMH-PRC"><constant>DTV_ATSCMH_PRC</constant></link></para></listitem> | |
| 1550 | − <listitem><para><link linkend="DTV-ATSCMH-RS-FRAME-MODE"><constant>DTV_ATSCMH_RS_FRAME_MODE</constant></link></para></listitem> | |
| 1551 | − <listitem><para><link linkend="DTV-ATSCMH-RS-FRAME-ENSEMBLE"><constant>DTV_ATSCMH_RS_FRAME_ENSEMBLE</constant></link></para></listitem> | |
| 1552 | − <listitem><para><link linkend="DTV-ATSCMH-RS-CODE-MODE-PRI"><constant>DTV_ATSCMH_RS_CODE_MODE_PRI</constant></link></para></listitem> | |
| 1553 | − <listitem><para><link linkend="DTV-ATSCMH-RS-CODE-MODE-SEC"><constant>DTV_ATSCMH_RS_CODE_MODE_SEC</constant></link></para></listitem> | |
| 1554 | − <listitem><para><link linkend="DTV-ATSCMH-SCCC-BLOCK-MODE"><constant>DTV_ATSCMH_SCCC_BLOCK_MODE</constant></link></para></listitem> | |
| 1555 | − <listitem><para><link linkend="DTV-ATSCMH-SCCC-CODE-MODE-A"><constant>DTV_ATSCMH_SCCC_CODE_MODE_A</constant></link></para></listitem> | |
| 1556 | − <listitem><para><link linkend="DTV-ATSCMH-SCCC-CODE-MODE-B"><constant>DTV_ATSCMH_SCCC_CODE_MODE_B</constant></link></para></listitem> | |
| 1557 | − <listitem><para><link linkend="DTV-ATSCMH-SCCC-CODE-MODE-C"><constant>DTV_ATSCMH_SCCC_CODE_MODE_C</constant></link></para></listitem> | |
| 1558 | − <listitem><para><link linkend="DTV-ATSCMH-SCCC-CODE-MODE-D"><constant>DTV_ATSCMH_SCCC_CODE_MODE_D</constant></link></para></listitem> | |
| 1559 | − </itemizedlist> | |
| 1560 | − <para>In addition, the <link linkend="frontend-stat-properties">DTV QoS statistics</link> are also valid.</para> | |
| 1561 | − </section> | |
| 1562 | − <section id="dtmb-params"> | |
| 1563 | − <title>DTMB delivery system</title> | |
| 1564 | − <para>The following parameters are valid for DTMB:</para> | |
| 1565 | − <itemizedlist mark='opencircle'> | |
| 1566 | − <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem> | |
| 1567 | − <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem> | |
| 1568 | − <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem> | |
| 1569 | − <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem> | |
| 1570 | − <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem> | |
| 1571 | − <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem> | |
| 1572 | − <listitem><para><link linkend="DTV-BANDWIDTH-HZ"><constant>DTV_BANDWIDTH_HZ</constant></link></para></listitem> | |
| 1573 | − <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem> | |
| 1574 | − <listitem><para><link linkend="DTV-INNER-FEC"><constant>DTV_INNER_FEC</constant></link></para></listitem> | |
| 1575 | − <listitem><para><link linkend="DTV-GUARD-INTERVAL"><constant>DTV_GUARD_INTERVAL</constant></link></para></listitem> | |
| 1576 | − <listitem><para><link linkend="DTV-TRANSMISSION-MODE"><constant>DTV_TRANSMISSION_MODE</constant></link></para></listitem> | |
| 1577 | − <listitem><para><link linkend="DTV-INTERLEAVING"><constant>DTV_INTERLEAVING</constant></link></para></listitem> | |
| 1578 | − <listitem><para><link linkend="DTV-LNA"><constant>DTV_LNA</constant></link></para></listitem> | |
| 1579 | − </itemizedlist> | |
| 1580 | − <para>In addition, the <link linkend="frontend-stat-properties">DTV QoS statistics</link> are also valid.</para> | |
| 1581 | − </section> | |
| 1582 | − </section> | |
| 1583 | − <section id="frontend-property-cable-systems"> | |
| 1584 | − <title>Properties used on cable delivery systems</title> | |
| 1585 | − <section id="dvbc-params"> | |
| 1586 | − <title>DVB-C delivery system</title> | |
| 1587 | − <para>The DVB-C Annex-A is the widely used cable standard. Transmission uses QAM modulation.</para> | |
| 1588 | − <para>The DVB-C Annex-C is optimized for 6MHz, and is used in Japan. It supports a subset of the Annex A modulation types, and a roll-off of 0.13, instead of 0.15</para> | |
| 1589 | − <para>The following parameters are valid for DVB-C Annex A/C:</para> | |
| 1590 | − <itemizedlist mark='opencircle'> | |
| 1591 | − <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem> | |
| 1592 | − <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem> | |
| 1593 | − <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem> | |
| 1594 | − <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem> | |
| 1595 | − <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem> | |
| 1596 | − <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem> | |
| 1597 | − <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem> | |
| 1598 | − <listitem><para><link linkend="DTV-SYMBOL-RATE"><constant>DTV_SYMBOL_RATE</constant></link></para></listitem> | |
| 1599 | − <listitem><para><link linkend="DTV-INNER-FEC"><constant>DTV_INNER_FEC</constant></link></para></listitem> | |
| 1600 | − <listitem><para><link linkend="DTV-LNA"><constant>DTV_LNA</constant></link></para></listitem> | |
| 1601 | − </itemizedlist> | |
| 1602 | − <para>In addition, the <link linkend="frontend-stat-properties">DTV QoS statistics</link> are also valid.</para> | |
| 1603 | − </section> | |
| 1604 | − <section id="dvbc-annex-b-params"> | |
| 1605 | − <title>DVB-C Annex B delivery system</title> | |
| 1606 | − <para>The DVB-C Annex-B is only used on a few Countries like the United States.</para> | |
| 1607 | − <para>The following parameters are valid for DVB-C Annex B:</para> | |
| 1608 | − <itemizedlist mark='opencircle'> | |
| 1609 | − <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem> | |
| 1610 | − <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem> | |
| 1611 | − <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem> | |
| 1612 | − <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem> | |
| 1613 | − <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem> | |
| 1614 | − <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem> | |
| 1615 | − <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem> | |
| 1616 | − <listitem><para><link linkend="DTV-LNA"><constant>DTV_LNA</constant></link></para></listitem> | |
| 1617 | − </itemizedlist> | |
| 1618 | − <para>In addition, the <link linkend="frontend-stat-properties">DTV QoS statistics</link> are also valid.</para> | |
| 1619 | − </section> | |
| 1620 | − </section> | |
| 1621 | − <section id="frontend-property-satellite-systems"> | |
| 1622 | − <title>Properties used on satellite delivery systems</title> | |
| 1623 | − <section id="dvbs-params"> | |
| 1624 | − <title>DVB-S delivery system</title> | |
| 1625 | − <para>The following parameters are valid for DVB-S:</para> | |
| 1626 | − <itemizedlist mark='opencircle'> | |
| 1627 | − <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem> | |
| 1628 | − <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem> | |
| 1629 | − <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem> | |
| 1630 | − <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem> | |
| 1631 | − <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem> | |
| 1632 | − <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem> | |
| 1633 | − <listitem><para><link linkend="DTV-SYMBOL-RATE"><constant>DTV_SYMBOL_RATE</constant></link></para></listitem> | |
| 1634 | − <listitem><para><link linkend="DTV-INNER-FEC"><constant>DTV_INNER_FEC</constant></link></para></listitem> | |
| 1635 | − <listitem><para><link linkend="DTV-VOLTAGE"><constant>DTV_VOLTAGE</constant></link></para></listitem> | |
| 1636 | − <listitem><para><link linkend="DTV-TONE"><constant>DTV_TONE</constant></link></para></listitem> | |
| 1637 | − </itemizedlist> | |
| 1638 | − <para>In addition, the <link linkend="frontend-stat-properties">DTV QoS statistics</link> are also valid.</para> | |
| 1639 | − <para>Future implementations might add those two missing parameters:</para> | |
| 1640 | − <itemizedlist mark='opencircle'> | |
| 1641 | − <listitem><para><link linkend="DTV-DISEQC-MASTER"><constant>DTV_DISEQC_MASTER</constant></link></para></listitem> | |
| 1642 | − <listitem><para><link linkend="DTV-DISEQC-SLAVE-REPLY"><constant>DTV_DISEQC_SLAVE_REPLY</constant></link></para></listitem> | |
| 1643 | − </itemizedlist> | |
| 1644 | − </section> | |
| 1645 | − <section id="dvbs2-params"> | |
| 1646 | − <title>DVB-S2 delivery system</title> | |
| 1647 | − <para>In addition to all parameters valid for DVB-S, DVB-S2 supports the following parameters:</para> | |
| 1648 | − <itemizedlist mark='opencircle'> | |
| 1649 | − <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem> | |
| 1650 | − <listitem><para><link linkend="DTV-PILOT"><constant>DTV_PILOT</constant></link></para></listitem> | |
| 1651 | − <listitem><para><link linkend="DTV-ROLLOFF"><constant>DTV_ROLLOFF</constant></link></para></listitem> | |
| 1652 | − <listitem><para><link linkend="DTV-STREAM-ID"><constant>DTV_STREAM_ID</constant></link></para></listitem> | |
| 1653 | − </itemizedlist> | |
| 1654 | − <para>In addition, the <link linkend="frontend-stat-properties">DTV QoS statistics</link> are also valid.</para> | |
| 1655 | − </section> | |
| 1656 | − <section id="turbo-params"> | |
| 1657 | − <title>Turbo code delivery system</title> | |
| 1658 | − <para>In addition to all parameters valid for DVB-S, turbo code supports the following parameters:</para> | |
| 1659 | − <itemizedlist mark='opencircle'> | |
| 1660 | − <listitem><para><link linkend="DTV-MODULATION"><constant>DTV_MODULATION</constant></link></para></listitem> | |
| 1661 | − </itemizedlist> | |
| 1662 | − </section> | |
| 1663 | − <section id="isdbs-params"> | |
| 1664 | − <title>ISDB-S delivery system</title> | |
| 1665 | − <para>The following parameters are valid for ISDB-S:</para> | |
| 1666 | − <itemizedlist mark='opencircle'> | |
| 1667 | − <listitem><para><link linkend="DTV-API-VERSION"><constant>DTV_API_VERSION</constant></link></para></listitem> | |
| 1668 | − <listitem><para><link linkend="DTV-DELIVERY-SYSTEM"><constant>DTV_DELIVERY_SYSTEM</constant></link></para></listitem> | |
| 1669 | − <listitem><para><link linkend="DTV-TUNE"><constant>DTV_TUNE</constant></link></para></listitem> | |
| 1670 | − <listitem><para><link linkend="DTV-CLEAR"><constant>DTV_CLEAR</constant></link></para></listitem> | |
| 1671 | − <listitem><para><link linkend="DTV-FREQUENCY"><constant>DTV_FREQUENCY</constant></link></para></listitem> | |
| 1672 | − <listitem><para><link linkend="DTV-INVERSION"><constant>DTV_INVERSION</constant></link></para></listitem> | |
| 1673 | − <listitem><para><link linkend="DTV-SYMBOL-RATE"><constant>DTV_SYMBOL_RATE</constant></link></para></listitem> | |
| 1674 | − <listitem><para><link linkend="DTV-INNER-FEC"><constant>DTV_INNER_FEC</constant></link></para></listitem> | |
| 1675 | − <listitem><para><link linkend="DTV-VOLTAGE"><constant>DTV_VOLTAGE</constant></link></para></listitem> | |
| 1676 | − <listitem><para><link linkend="DTV-STREAM-ID"><constant>DTV_STREAM_ID</constant></link></para></listitem> | |
| 1677 | − </itemizedlist> | |
| 1678 | − </section> | |
| 1679 | − </section> | |
| 1680 | −</section> | |
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| 1 | −<title>Examples</title> | |
| 2 | −<para>In this section we would like to present some examples for using the DVB API. | |
| 3 | −</para> | |
| 4 | −<para>NOTE: This section is out of date, and the code below won't even | |
| 5 | − compile. Please refer to the | |
| 6 | − <ulink url="https://linuxtv.org/docs/libdvbv5/index.html">libdvbv5</ulink> | |
| 7 | − for updated/recommended examples. | |
| 8 | −</para> | |
| 9 | − | |
| 10 | −<section id="tuning"> | |
| 11 | −<title>Tuning</title> | |
| 12 | −<para>We will start with a generic tuning subroutine that uses the frontend and SEC, as well as | |
| 13 | −the demux devices. The example is given for QPSK tuners, but can easily be adjusted for | |
| 14 | −QAM. | |
| 15 | −</para> | |
| 16 | −<programlisting> | |
| 17 | − #include <sys/ioctl.h> | |
| 18 | − #include <stdio.h> | |
| 19 | − #include <stdint.h> | |
| 20 | − #include <sys/types.h> | |
| 21 | − #include <sys/stat.h> | |
| 22 | − #include <fcntl.h> | |
| 23 | − #include <time.h> | |
| 24 | − #include <unistd.h> | |
| 25 | − | |
| 26 | − #include <linux/dvb/dmx.h> | |
| 27 | − #include <linux/dvb/frontend.h> | |
| 28 | − #include <linux/dvb/sec.h> | |
| 29 | − #include <sys/poll.h> | |
| 30 | − | |
| 31 | − #define DMX "/dev/dvb/adapter0/demux1" | |
| 32 | − #define FRONT "/dev/dvb/adapter0/frontend1" | |
| 33 | − #define SEC "/dev/dvb/adapter0/sec1" | |
| 34 | − | |
| 35 | − /⋆ routine for checking if we have a signal and other status information⋆/ | |
| 36 | − int FEReadStatus(int fd, fe_status_t ⋆stat) | |
| 37 | − { | |
| 38 | − int ans; | |
| 39 | − | |
| 40 | − if ( (ans = ioctl(fd,FE_READ_STATUS,stat) < 0)){ | |
| 41 | − perror("FE READ STATUS: "); | |
| 42 | − return -1; | |
| 43 | − } | |
| 44 | − | |
| 45 | − if (⋆stat & FE_HAS_POWER) | |
| 46 | − printf("FE HAS POWER\n"); | |
| 47 | − | |
| 48 | − if (⋆stat & FE_HAS_SIGNAL) | |
| 49 | − printf("FE HAS SIGNAL\n"); | |
| 50 | − | |
| 51 | − if (⋆stat & FE_SPECTRUM_INV) | |
| 52 | − printf("SPEKTRUM INV\n"); | |
| 53 | − | |
| 54 | − return 0; | |
| 55 | − } | |
| 56 | − | |
| 57 | − | |
| 58 | − /⋆ tune qpsk ⋆/ | |
| 59 | − /⋆ freq: frequency of transponder ⋆/ | |
| 60 | − /⋆ vpid, apid, tpid: PIDs of video, audio and teletext TS packets ⋆/ | |
| 61 | − /⋆ diseqc: DiSEqC address of the used LNB ⋆/ | |
| 62 | − /⋆ pol: Polarisation ⋆/ | |
| 63 | − /⋆ srate: Symbol Rate ⋆/ | |
| 64 | − /⋆ fec. FEC ⋆/ | |
| 65 | − /⋆ lnb_lof1: local frequency of lower LNB band ⋆/ | |
| 66 | − /⋆ lnb_lof2: local frequency of upper LNB band ⋆/ | |
| 67 | − /⋆ lnb_slof: switch frequency of LNB ⋆/ | |
| 68 | − | |
| 69 | − int set_qpsk_channel(int freq, int vpid, int apid, int tpid, | |
| 70 | − int diseqc, int pol, int srate, int fec, int lnb_lof1, | |
| 71 | − int lnb_lof2, int lnb_slof) | |
| 72 | − { | |
| 73 | − struct secCommand scmd; | |
| 74 | − struct secCmdSequence scmds; | |
| 75 | − struct dmx_pes_filter_params pesFilterParams; | |
| 76 | − FrontendParameters frp; | |
| 77 | − struct pollfd pfd[1]; | |
| 78 | − FrontendEvent event; | |
| 79 | − int demux1, demux2, demux3, front; | |
| 80 | − | |
| 81 | − frequency = (uint32_t) freq; | |
| 82 | − symbolrate = (uint32_t) srate; | |
| 83 | − | |
| 84 | − if((front = open(FRONT,O_RDWR)) < 0){ | |
| 85 | − perror("FRONTEND DEVICE: "); | |
| 86 | − return -1; | |
| 87 | − } | |
| 88 | − | |
| 89 | − if((sec = open(SEC,O_RDWR)) < 0){ | |
| 90 | − perror("SEC DEVICE: "); | |
| 91 | − return -1; | |
| 92 | − } | |
| 93 | − | |
| 94 | − if (demux1 < 0){ | |
| 95 | − if ((demux1=open(DMX, O_RDWR|O_NONBLOCK)) | |
| 96 | − < 0){ | |
| 97 | − perror("DEMUX DEVICE: "); | |
| 98 | − return -1; | |
| 99 | − } | |
| 100 | − } | |
| 101 | − | |
| 102 | − if (demux2 < 0){ | |
| 103 | − if ((demux2=open(DMX, O_RDWR|O_NONBLOCK)) | |
| 104 | − < 0){ | |
| 105 | − perror("DEMUX DEVICE: "); | |
| 106 | − return -1; | |
| 107 | − } | |
| 108 | − } | |
| 109 | − | |
| 110 | − if (demux3 < 0){ | |
| 111 | − if ((demux3=open(DMX, O_RDWR|O_NONBLOCK)) | |
| 112 | − < 0){ | |
| 113 | − perror("DEMUX DEVICE: "); | |
| 114 | − return -1; | |
| 115 | − } | |
| 116 | − } | |
| 117 | − | |
| 118 | − if (freq < lnb_slof) { | |
| 119 | − frp.Frequency = (freq - lnb_lof1); | |
| 120 | − scmds.continuousTone = SEC_TONE_OFF; | |
| 121 | − } else { | |
| 122 | − frp.Frequency = (freq - lnb_lof2); | |
| 123 | − scmds.continuousTone = SEC_TONE_ON; | |
| 124 | − } | |
| 125 | − frp.Inversion = INVERSION_AUTO; | |
| 126 | − if (pol) scmds.voltage = SEC_VOLTAGE_18; | |
| 127 | − else scmds.voltage = SEC_VOLTAGE_13; | |
| 128 | − | |
| 129 | − scmd.type=0; | |
| 130 | − scmd.u.diseqc.addr=0x10; | |
| 131 | − scmd.u.diseqc.cmd=0x38; | |
| 132 | − scmd.u.diseqc.numParams=1; | |
| 133 | − scmd.u.diseqc.params[0] = 0xF0 | ((diseqc ⋆ 4) & 0x0F) | | |
| 134 | − (scmds.continuousTone == SEC_TONE_ON ? 1 : 0) | | |
| 135 | − (scmds.voltage==SEC_VOLTAGE_18 ? 2 : 0); | |
| 136 | − | |
| 137 | − scmds.miniCommand=SEC_MINI_NONE; | |
| 138 | − scmds.numCommands=1; | |
| 139 | − scmds.commands=&scmd; | |
| 140 | − if (ioctl(sec, SEC_SEND_SEQUENCE, &scmds) < 0){ | |
| 141 | − perror("SEC SEND: "); | |
| 142 | − return -1; | |
| 143 | − } | |
| 144 | − | |
| 145 | − if (ioctl(sec, SEC_SEND_SEQUENCE, &scmds) < 0){ | |
| 146 | − perror("SEC SEND: "); | |
| 147 | − return -1; | |
| 148 | − } | |
| 149 | − | |
| 150 | − frp.u.qpsk.SymbolRate = srate; | |
| 151 | − frp.u.qpsk.FEC_inner = fec; | |
| 152 | − | |
| 153 | − if (ioctl(front, FE_SET_FRONTEND, &frp) < 0){ | |
| 154 | − perror("QPSK TUNE: "); | |
| 155 | − return -1; | |
| 156 | − } | |
| 157 | − | |
| 158 | − pfd[0].fd = front; | |
| 159 | − pfd[0].events = POLLIN; | |
| 160 | − | |
| 161 | − if (poll(pfd,1,3000)){ | |
| 162 | − if (pfd[0].revents & POLLIN){ | |
| 163 | − printf("Getting QPSK event\n"); | |
| 164 | − if ( ioctl(front, FE_GET_EVENT, &event) | |
| 165 | − | |
| 166 | − == -EOVERFLOW){ | |
| 167 | − perror("qpsk get event"); | |
| 168 | − return -1; | |
| 169 | − } | |
| 170 | − printf("Received "); | |
| 171 | − switch(event.type){ | |
| 172 | − case FE_UNEXPECTED_EV: | |
| 173 | − printf("unexpected event\n"); | |
| 174 | − return -1; | |
| 175 | − case FE_FAILURE_EV: | |
| 176 | − printf("failure event\n"); | |
| 177 | − return -1; | |
| 178 | − | |
| 179 | − case FE_COMPLETION_EV: | |
| 180 | − printf("completion event\n"); | |
| 181 | − } | |
| 182 | − } | |
| 183 | − } | |
| 184 | − | |
| 185 | − | |
| 186 | − pesFilterParams.pid = vpid; | |
| 187 | − pesFilterParams.input = DMX_IN_FRONTEND; | |
| 188 | − pesFilterParams.output = DMX_OUT_DECODER; | |
| 189 | − pesFilterParams.pes_type = DMX_PES_VIDEO; | |
| 190 | − pesFilterParams.flags = DMX_IMMEDIATE_START; | |
| 191 | − if (ioctl(demux1, DMX_SET_PES_FILTER, &pesFilterParams) < 0){ | |
| 192 | − perror("set_vpid"); | |
| 193 | − return -1; | |
| 194 | − } | |
| 195 | − | |
| 196 | − pesFilterParams.pid = apid; | |
| 197 | − pesFilterParams.input = DMX_IN_FRONTEND; | |
| 198 | − pesFilterParams.output = DMX_OUT_DECODER; | |
| 199 | − pesFilterParams.pes_type = DMX_PES_AUDIO; | |
| 200 | − pesFilterParams.flags = DMX_IMMEDIATE_START; | |
| 201 | − if (ioctl(demux2, DMX_SET_PES_FILTER, &pesFilterParams) < 0){ | |
| 202 | − perror("set_apid"); | |
| 203 | − return -1; | |
| 204 | − } | |
| 205 | − | |
| 206 | − pesFilterParams.pid = tpid; | |
| 207 | − pesFilterParams.input = DMX_IN_FRONTEND; | |
| 208 | − pesFilterParams.output = DMX_OUT_DECODER; | |
| 209 | − pesFilterParams.pes_type = DMX_PES_TELETEXT; | |
| 210 | − pesFilterParams.flags = DMX_IMMEDIATE_START; | |
| 211 | − if (ioctl(demux3, DMX_SET_PES_FILTER, &pesFilterParams) < 0){ | |
| 212 | − perror("set_tpid"); | |
| 213 | − return -1; | |
| 214 | − } | |
| 215 | − | |
| 216 | − return has_signal(fds); | |
| 217 | − } | |
| 218 | − | |
| 219 | −</programlisting> | |
| 220 | −<para>The program assumes that you are using a universal LNB and a standard DiSEqC | |
| 221 | −switch with up to 4 addresses. Of course, you could build in some more checking if | |
| 222 | −tuning was successful and maybe try to repeat the tuning process. Depending on the | |
| 223 | −external hardware, i.e. LNB and DiSEqC switch, and weather conditions this may be | |
| 224 | −necessary. | |
| 225 | −</para> | |
| 226 | −</section> | |
| 227 | − | |
| 228 | −<section id="the_dvr_device"> | |
| 229 | −<title>The DVR device</title> | |
| 230 | −<para>The following program code shows how to use the DVR device for recording. | |
| 231 | −</para> | |
| 232 | −<programlisting> | |
| 233 | − #include <sys/ioctl.h> | |
| 234 | − #include <stdio.h> | |
| 235 | − #include <stdint.h> | |
| 236 | − #include <sys/types.h> | |
| 237 | − #include <sys/stat.h> | |
| 238 | − #include <fcntl.h> | |
| 239 | − #include <time.h> | |
| 240 | − #include <unistd.h> | |
| 241 | − | |
| 242 | − #include <linux/dvb/dmx.h> | |
| 243 | − #include <linux/dvb/video.h> | |
| 244 | − #include <sys/poll.h> | |
| 245 | − #define DVR "/dev/dvb/adapter0/dvr1" | |
| 246 | − #define AUDIO "/dev/dvb/adapter0/audio1" | |
| 247 | − #define VIDEO "/dev/dvb/adapter0/video1" | |
| 248 | − | |
| 249 | − #define BUFFY (188⋆20) | |
| 250 | − #define MAX_LENGTH (1024⋆1024⋆5) /⋆ record 5MB ⋆/ | |
| 251 | − | |
| 252 | − | |
| 253 | − /⋆ switch the demuxes to recording, assuming the transponder is tuned ⋆/ | |
| 254 | − | |
| 255 | − /⋆ demux1, demux2: file descriptor of video and audio filters ⋆/ | |
| 256 | − /⋆ vpid, apid: PIDs of video and audio channels ⋆/ | |
| 257 | − | |
| 258 | − int switch_to_record(int demux1, int demux2, uint16_t vpid, uint16_t apid) | |
| 259 | − { | |
| 260 | − struct dmx_pes_filter_params pesFilterParams; | |
| 261 | − | |
| 262 | − if (demux1 < 0){ | |
| 263 | − if ((demux1=open(DMX, O_RDWR|O_NONBLOCK)) | |
| 264 | − < 0){ | |
| 265 | − perror("DEMUX DEVICE: "); | |
| 266 | − return -1; | |
| 267 | − } | |
| 268 | − } | |
| 269 | − | |
| 270 | − if (demux2 < 0){ | |
| 271 | − if ((demux2=open(DMX, O_RDWR|O_NONBLOCK)) | |
| 272 | − < 0){ | |
| 273 | − perror("DEMUX DEVICE: "); | |
| 274 | − return -1; | |
| 275 | − } | |
| 276 | − } | |
| 277 | − | |
| 278 | − pesFilterParams.pid = vpid; | |
| 279 | − pesFilterParams.input = DMX_IN_FRONTEND; | |
| 280 | − pesFilterParams.output = DMX_OUT_TS_TAP; | |
| 281 | − pesFilterParams.pes_type = DMX_PES_VIDEO; | |
| 282 | − pesFilterParams.flags = DMX_IMMEDIATE_START; | |
| 283 | − if (ioctl(demux1, DMX_SET_PES_FILTER, &pesFilterParams) < 0){ | |
| 284 | − perror("DEMUX DEVICE"); | |
| 285 | − return -1; | |
| 286 | − } | |
| 287 | − pesFilterParams.pid = apid; | |
| 288 | − pesFilterParams.input = DMX_IN_FRONTEND; | |
| 289 | − pesFilterParams.output = DMX_OUT_TS_TAP; | |
| 290 | − pesFilterParams.pes_type = DMX_PES_AUDIO; | |
| 291 | − pesFilterParams.flags = DMX_IMMEDIATE_START; | |
| 292 | − if (ioctl(demux2, DMX_SET_PES_FILTER, &pesFilterParams) < 0){ | |
| 293 | − perror("DEMUX DEVICE"); | |
| 294 | − return -1; | |
| 295 | − } | |
| 296 | − return 0; | |
| 297 | − } | |
| 298 | − | |
| 299 | − /⋆ start recording MAX_LENGTH , assuming the transponder is tuned ⋆/ | |
| 300 | − | |
| 301 | − /⋆ demux1, demux2: file descriptor of video and audio filters ⋆/ | |
| 302 | − /⋆ vpid, apid: PIDs of video and audio channels ⋆/ | |
| 303 | − int record_dvr(int demux1, int demux2, uint16_t vpid, uint16_t apid) | |
| 304 | − { | |
| 305 | − int i; | |
| 306 | − int len; | |
| 307 | − int written; | |
| 308 | − uint8_t buf[BUFFY]; | |
| 309 | − uint64_t length; | |
| 310 | − struct pollfd pfd[1]; | |
| 311 | − int dvr, dvr_out; | |
| 312 | − | |
| 313 | − /⋆ open dvr device ⋆/ | |
| 314 | − if ((dvr = open(DVR, O_RDONLY|O_NONBLOCK)) < 0){ | |
| 315 | − perror("DVR DEVICE"); | |
| 316 | − return -1; | |
| 317 | − } | |
| 318 | − | |
| 319 | − /⋆ switch video and audio demuxes to dvr ⋆/ | |
| 320 | − printf ("Switching dvr on\n"); | |
| 321 | − i = switch_to_record(demux1, demux2, vpid, apid); | |
| 322 | − printf("finished: "); | |
| 323 | − | |
| 324 | − printf("Recording %2.0f MB of test file in TS format\n", | |
| 325 | − MAX_LENGTH/(1024.0⋆1024.0)); | |
| 326 | − length = 0; | |
| 327 | − | |
| 328 | − /⋆ open output file ⋆/ | |
| 329 | − if ((dvr_out = open(DVR_FILE,O_WRONLY|O_CREAT | |
| 330 | − |O_TRUNC, S_IRUSR|S_IWUSR | |
| 331 | − |S_IRGRP|S_IWGRP|S_IROTH| | |
| 332 | − S_IWOTH)) < 0){ | |
| 333 | − perror("Can't open file for dvr test"); | |
| 334 | − return -1; | |
| 335 | − } | |
| 336 | − | |
| 337 | − pfd[0].fd = dvr; | |
| 338 | − pfd[0].events = POLLIN; | |
| 339 | − | |
| 340 | − /⋆ poll for dvr data and write to file ⋆/ | |
| 341 | − while (length < MAX_LENGTH ) { | |
| 342 | − if (poll(pfd,1,1)){ | |
| 343 | − if (pfd[0].revents & POLLIN){ | |
| 344 | − len = read(dvr, buf, BUFFY); | |
| 345 | − if (len < 0){ | |
| 346 | − perror("recording"); | |
| 347 | − return -1; | |
| 348 | − } | |
| 349 | − if (len > 0){ | |
| 350 | − written = 0; | |
| 351 | − while (written < len) | |
| 352 | − written += | |
| 353 | − write (dvr_out, | |
| 354 | − buf, len); | |
| 355 | − length += len; | |
| 356 | − printf("written %2.0f MB\r", | |
| 357 | − length/1024./1024.); | |
| 358 | − } | |
| 359 | − } | |
| 360 | − } | |
| 361 | − } | |
| 362 | − return 0; | |
| 363 | − } | |
| 364 | − | |
| 365 | −</programlisting> | |
| 366 | − | |
| 367 | −</section> | |
| @@ -1,78 +0,0 @@ | ||
| 1 | −<refentry id="FE_DISEQC_RECV_SLAVE_REPLY"> | |
| 2 | − <refmeta> | |
| 3 | − <refentrytitle>ioctl FE_DISEQC_RECV_SLAVE_REPLY</refentrytitle> | |
| 4 | − &manvol; | |
| 5 | − </refmeta> | |
| 6 | − | |
| 7 | − <refnamediv> | |
| 8 | − <refname>FE_DISEQC_RECV_SLAVE_REPLY</refname> | |
| 9 | − <refpurpose>Receives reply from a DiSEqC 2.0 command</refpurpose> | |
| 10 | − </refnamediv> | |
| 11 | − | |
| 12 | − <refsynopsisdiv> | |
| 13 | − <funcsynopsis> | |
| 14 | − <funcprototype> | |
| 15 | − <funcdef>int <function>ioctl</function></funcdef> | |
| 16 | − <paramdef>int <parameter>fd</parameter></paramdef> | |
| 17 | − <paramdef>int <parameter>request</parameter></paramdef> | |
| 18 | − <paramdef>struct dvb_diseqc_slave_reply *<parameter>argp</parameter></paramdef> | |
| 19 | − </funcprototype> | |
| 20 | − </funcsynopsis> | |
| 21 | − </refsynopsisdiv> | |
| 22 | − | |
| 23 | − <refsect1> | |
| 24 | − <title>Arguments</title> | |
| 25 | − <variablelist> | |
| 26 | − <varlistentry> | |
| 27 | − <term><parameter>fd</parameter></term> | |
| 28 | − <listitem> | |
| 29 | − <para>&fe_fd;</para> | |
| 30 | − </listitem> | |
| 31 | − </varlistentry> | |
| 32 | − <varlistentry> | |
| 33 | − <term><parameter>request</parameter></term> | |
| 34 | − <listitem> | |
| 35 | − <para>FE_DISEQC_RECV_SLAVE_REPLY</para> | |
| 36 | − </listitem> | |
| 37 | − </varlistentry> | |
| 38 | − <varlistentry> | |
| 39 | − <term><parameter>argp</parameter></term> | |
| 40 | − <listitem> | |
| 41 | − <para>pointer to &dvb-diseqc-slave-reply;</para> | |
| 42 | − </listitem> | |
| 43 | − </varlistentry> | |
| 44 | − </variablelist> | |
| 45 | − </refsect1> | |
| 46 | − | |
| 47 | − <refsect1> | |
| 48 | − <title>Description</title> | |
| 49 | − | |
| 50 | − <para>Receives reply from a DiSEqC 2.0 command.</para> | |
| 51 | −&return-value-dvb; | |
| 52 | − | |
| 53 | −<table pgwide="1" frame="none" id="dvb-diseqc-slave-reply"> | |
| 54 | − <title>struct <structname>dvb_diseqc_slave_reply</structname></title> | |
| 55 | − <tgroup cols="3"> | |
| 56 | − &cs-str; | |
| 57 | − <tbody valign="top"> | |
| 58 | − <row> | |
| 59 | − <entry>uint8_t</entry> | |
| 60 | − <entry>msg[4]</entry> | |
| 61 | − <entry>DiSEqC message (framing, data[3])</entry> | |
| 62 | − </row><row> | |
| 63 | − <entry>uint8_t</entry> | |
| 64 | − <entry>msg_len</entry> | |
| 65 | − <entry>Length of the DiSEqC message. Valid values are 0 to 4, | |
| 66 | − where 0 means no msg</entry> | |
| 67 | − </row><row> | |
| 68 | − <entry>int</entry> | |
| 69 | − <entry>timeout</entry> | |
| 70 | − <entry>Return from ioctl after timeout ms with errorcode when no | |
| 71 | − message was received</entry> | |
| 72 | − </row> | |
| 73 | − </tbody> | |
| 74 | − </tgroup> | |
| 75 | −</table> | |
| 76 | − | |
| 77 | −</refsect1> | |
| 78 | −</refentry> | |
| @@ -1,51 +0,0 @@ | ||
| 1 | −<refentry id="FE_DISEQC_RESET_OVERLOAD"> | |
| 2 | − <refmeta> | |
| 3 | − <refentrytitle>ioctl FE_DISEQC_RESET_OVERLOAD</refentrytitle> | |
| 4 | − &manvol; | |
| 5 | − </refmeta> | |
| 6 | − | |
| 7 | − <refnamediv> | |
| 8 | − <refname>FE_DISEQC_RESET_OVERLOAD</refname> | |
| 9 | − <refpurpose>Restores the power to the antenna subsystem, if it was powered | |
| 10 | − off due to power overload.</refpurpose> | |
| 11 | − </refnamediv> | |
| 12 | − | |
| 13 | − <refsynopsisdiv> | |
| 14 | − <funcsynopsis> | |
| 15 | − <funcprototype> | |
| 16 | − <funcdef>int <function>ioctl</function></funcdef> | |
| 17 | − <paramdef>int <parameter>fd</parameter></paramdef> | |
| 18 | − <paramdef>int <parameter>request</parameter></paramdef> | |
| 19 | − <paramdef>NULL</paramdef> | |
| 20 | − </funcprototype> | |
| 21 | − </funcsynopsis> | |
| 22 | − </refsynopsisdiv> | |
| 23 | − | |
| 24 | − <refsect1> | |
| 25 | − <title>Arguments</title> | |
| 26 | − <variablelist> | |
| 27 | − <varlistentry> | |
| 28 | − <term><parameter>fd</parameter></term> | |
| 29 | − <listitem> | |
| 30 | − <para>&fe_fd;</para> | |
| 31 | − </listitem> | |
| 32 | − </varlistentry> | |
| 33 | − <varlistentry> | |
| 34 | − <term><parameter>request</parameter></term> | |
| 35 | − <listitem> | |
| 36 | − <para>FE_DISEQC_RESET_OVERLOAD</para> | |
| 37 | − </listitem> | |
| 38 | − </varlistentry> | |
| 39 | − </variablelist> | |
| 40 | − </refsect1> | |
| 41 | − | |
| 42 | − <refsect1> | |
| 43 | − <title>Description</title> | |
| 44 | − | |
| 45 | − <para>If the bus has been automatically powered off due to power overload, this ioctl | |
| 46 | − call restores the power to the bus. The call requires read/write access to the | |
| 47 | − device. This call has no effect if the device is manually powered off. Not all | |
| 48 | − DVB adapters support this ioctl.</para> | |
| 49 | −&return-value-dvb; | |
| 50 | −</refsect1> | |
| 51 | −</refentry> | |
| @@ -1,89 +0,0 @@ | ||
| 1 | −<refentry id="FE_DISEQC_SEND_BURST"> | |
| 2 | − <refmeta> | |
| 3 | − <refentrytitle>ioctl FE_DISEQC_SEND_BURST</refentrytitle> | |
| 4 | − &manvol; | |
| 5 | − </refmeta> | |
| 6 | − | |
| 7 | − <refnamediv> | |
| 8 | − <refname>FE_DISEQC_SEND_BURST</refname> | |
| 9 | − <refpurpose>Sends a 22KHz tone burst for 2x1 mini DiSEqC satellite selection.</refpurpose> | |
| 10 | − </refnamediv> | |
| 11 | − | |
| 12 | − <refsynopsisdiv> | |
| 13 | − <funcsynopsis> | |
| 14 | − <funcprototype> | |
| 15 | − <funcdef>int <function>ioctl</function></funcdef> | |
| 16 | − <paramdef>int <parameter>fd</parameter></paramdef> | |
| 17 | − <paramdef>int <parameter>request</parameter></paramdef> | |
| 18 | − <paramdef>enum fe_sec_mini_cmd *<parameter>tone</parameter></paramdef> | |
| 19 | − </funcprototype> | |
| 20 | − </funcsynopsis> | |
| 21 | − </refsynopsisdiv> | |
| 22 | − | |
| 23 | − <refsect1> | |
| 24 | − <title>Arguments</title> | |
| 25 | − <variablelist> | |
| 26 | − <varlistentry> | |
| 27 | − <term><parameter>fd</parameter></term> | |
| 28 | − <listitem> | |
| 29 | − <para>&fe_fd;</para> | |
| 30 | − </listitem> | |
| 31 | − </varlistentry> | |
| 32 | − <varlistentry> | |
| 33 | − <term><parameter>request</parameter></term> | |
| 34 | − <listitem> | |
| 35 | − <para>FE_DISEQC_SEND_BURST</para> | |
| 36 | − </listitem> | |
| 37 | − </varlistentry> | |
| 38 | − <varlistentry> | |
| 39 | − <term><parameter>tone</parameter></term> | |
| 40 | − <listitem> | |
| 41 | − <para>pointer to &fe-sec-mini-cmd;</para> | |
| 42 | − </listitem> | |
| 43 | − </varlistentry> | |
| 44 | − </variablelist> | |
| 45 | − </refsect1> | |
| 46 | − | |
| 47 | − <refsect1> | |
| 48 | − <title>Description</title> | |
| 49 | − | |
| 50 | −<para>This ioctl is used to set the generation of a 22kHz tone burst for mini | |
| 51 | − DiSEqC satellite | |
| 52 | − selection for 2x1 switches. | |
| 53 | − This call requires read/write permissions.</para> | |
| 54 | −<para>It provides support for what's specified at | |
| 55 | − <ulink url="http://www.eutelsat.com/files/contributed/satellites/pdf/Diseqc/associated%20docs/simple_tone_burst_detec.pdf">Digital Satellite Equipment Control | |
| 56 | − (DiSEqC) - Simple "ToneBurst" Detection Circuit specification.</ulink> | |
| 57 | − </para> | |
| 58 | −&return-value-dvb; | |
| 59 | −</refsect1> | |
| 60 | − | |
| 61 | −<refsect1 id="fe-sec-mini-cmd-t"> | |
| 62 | −<title>enum fe_sec_mini_cmd</title> | |
| 63 | − | |
| 64 | −<table pgwide="1" frame="none" id="fe-sec-mini-cmd"> | |
| 65 | − <title>enum fe_sec_mini_cmd</title> | |
| 66 | − <tgroup cols="2"> | |
| 67 | − &cs-def; | |
| 68 | − <thead> | |
| 69 | − <row> | |
| 70 | − <entry>ID</entry> | |
| 71 | − <entry>Description</entry> | |
| 72 | − </row> | |
| 73 | − </thead> | |
| 74 | − <tbody valign="top"> | |
| 75 | − <row> | |
| 76 | − <entry align="char" id="SEC-MINI-A"><constant>SEC_MINI_A</constant></entry> | |
| 77 | − <entry align="char">Sends a mini-DiSEqC 22kHz '0' Tone Burst to | |
| 78 | − select satellite-A</entry> | |
| 79 | − </row><row> | |
| 80 | − <entry align="char" id="SEC-MINI-B"><constant>SEC_MINI_B</constant></entry> | |
| 81 | − <entry align="char">Sends a mini-DiSEqC 22kHz '1' Data Burst to | |
| 82 | − select satellite-B</entry> | |
| 83 | − </row> | |
| 84 | − </tbody> | |
| 85 | − </tgroup> | |
| 86 | −</table> | |
| 87 | −</refsect1> | |
| 88 | − | |
| 89 | −</refentry> | |
| @@ -1,72 +0,0 @@ | ||
| 1 | −<refentry id="FE_DISEQC_SEND_MASTER_CMD"> | |
| 2 | − <refmeta> | |
| 3 | − <refentrytitle>ioctl FE_DISEQC_SEND_MASTER_CMD</refentrytitle> | |
| 4 | − &manvol; | |
| 5 | − </refmeta> | |
| 6 | − | |
| 7 | − <refnamediv> | |
| 8 | − <refname>FE_DISEQC_SEND_MASTER_CMD</refname> | |
| 9 | − <refpurpose>Sends a DiSEqC command</refpurpose> | |
| 10 | − </refnamediv> | |
| 11 | − | |
| 12 | − <refsynopsisdiv> | |
| 13 | − <funcsynopsis> | |
| 14 | − <funcprototype> | |
| 15 | − <funcdef>int <function>ioctl</function></funcdef> | |
| 16 | − <paramdef>int <parameter>fd</parameter></paramdef> | |
| 17 | − <paramdef>int <parameter>request</parameter></paramdef> | |
| 18 | − <paramdef>struct dvb_diseqc_master_cmd *<parameter>argp</parameter></paramdef> | |
| 19 | − </funcprototype> | |
| 20 | − </funcsynopsis> | |
| 21 | − </refsynopsisdiv> | |
| 22 | − | |
| 23 | − <refsect1> | |
| 24 | − <title>Arguments</title> | |
| 25 | − <variablelist> | |
| 26 | − <varlistentry> | |
| 27 | − <term><parameter>fd</parameter></term> | |
| 28 | − <listitem> | |
| 29 | − <para>&fe_fd;</para> | |
| 30 | − </listitem> | |
| 31 | − </varlistentry> | |
| 32 | − <varlistentry> | |
| 33 | − <term><parameter>request</parameter></term> | |
| 34 | − <listitem> | |
| 35 | − <para>FE_DISEQC_SEND_MASTER_CMD</para> | |
| 36 | − </listitem> | |
| 37 | − </varlistentry> | |
| 38 | − <varlistentry> | |
| 39 | − <term><parameter>argp</parameter></term> | |
| 40 | − <listitem> | |
| 41 | − <para>pointer to &dvb-diseqc-master-cmd;</para> | |
| 42 | − </listitem> | |
| 43 | − </varlistentry> | |
| 44 | − </variablelist> | |
| 45 | − </refsect1> | |
| 46 | − | |
| 47 | − <refsect1> | |
| 48 | − <title>Description</title> | |
| 49 | − | |
| 50 | − <para>Sends a DiSEqC command to the antenna subsystem.</para> | |
| 51 | −&return-value-dvb; | |
| 52 | − | |
| 53 | −<table pgwide="1" frame="none" id="dvb-diseqc-master-cmd"> | |
| 54 | − <title>struct <structname>dvb_diseqc_master_cmd</structname></title> | |
| 55 | − <tgroup cols="3"> | |
| 56 | − &cs-str; | |
| 57 | − <tbody valign="top"> | |
| 58 | − <row> | |
| 59 | − <entry>uint8_t</entry> | |
| 60 | − <entry>msg[6]</entry> | |
| 61 | − <entry>DiSEqC message (framing, address, command, data[3])</entry> | |
| 62 | − </row><row> | |
| 63 | − <entry>uint8_t</entry> | |
| 64 | − <entry>msg_len</entry> | |
| 65 | − <entry>Length of the DiSEqC message. Valid values are 3 to 6</entry> | |
| 66 | − </row> | |
| 67 | − </tbody> | |
| 68 | − </tgroup> | |
| 69 | −</table> | |
| 70 | − | |
| 71 | −</refsect1> | |
| 72 | −</refentry> | |
| @@ -1,61 +0,0 @@ | ||
| 1 | −<refentry id="FE_ENABLE_HIGH_LNB_VOLTAGE"> | |
| 2 | − <refmeta> | |
| 3 | − <refentrytitle>ioctl FE_ENABLE_HIGH_LNB_VOLTAGE</refentrytitle> | |
| 4 | − &manvol; | |
| 5 | − </refmeta> | |
| 6 | − | |
| 7 | − <refnamediv> | |
| 8 | − <refname>FE_ENABLE_HIGH_LNB_VOLTAGE</refname> | |
| 9 | − <refpurpose>Select output DC level between normal LNBf voltages or higher | |
| 10 | − LNBf voltages.</refpurpose> | |
| 11 | − </refnamediv> | |
| 12 | − | |
| 13 | − <refsynopsisdiv> | |
| 14 | − <funcsynopsis> | |
| 15 | − <funcprototype> | |
| 16 | − <funcdef>int <function>ioctl</function></funcdef> | |
| 17 | − <paramdef>int <parameter>fd</parameter></paramdef> | |
| 18 | − <paramdef>int <parameter>request</parameter></paramdef> | |
| 19 | − <paramdef>unsigned int <parameter>high</parameter></paramdef> | |
| 20 | − </funcprototype> | |
| 21 | − </funcsynopsis> | |
| 22 | − </refsynopsisdiv> | |
| 23 | − | |
| 24 | − <refsect1> | |
| 25 | − <title>Arguments</title> | |
| 26 | − <variablelist> | |
| 27 | − <varlistentry> | |
| 28 | − <term><parameter>fd</parameter></term> | |
| 29 | − <listitem> | |
| 30 | − <para>&fe_fd;</para> | |
| 31 | − </listitem> | |
| 32 | − </varlistentry> | |
| 33 | − <varlistentry> | |
| 34 | − <term><parameter>request</parameter></term> | |
| 35 | − <listitem> | |
| 36 | − <para>FE_ENABLE_HIGH_LNB_VOLTAGE</para> | |
| 37 | − </listitem> | |
| 38 | − </varlistentry> | |
| 39 | − <varlistentry> | |
| 40 | − <term><parameter>high</parameter></term> | |
| 41 | − <listitem> | |
| 42 | − <para>Valid flags:</para> | |
| 43 | − <itemizedlist> | |
| 44 | − <listitem><para>0 - normal 13V and 18V.</para></listitem> | |
| 45 | − <listitem><para>>0 - enables slightly higher voltages instead of | |
| 46 | − 13/18V, in order to compensate for long antenna cables.</para></listitem> | |
| 47 | − </itemizedlist> | |
| 48 | − </listitem> | |
| 49 | − </varlistentry> | |
| 50 | − </variablelist> | |
| 51 | − </refsect1> | |
| 52 | − | |
| 53 | − <refsect1> | |
| 54 | − <title>Description</title> | |
| 55 | − | |
| 56 | − <para>Select output DC level between normal LNBf voltages or higher | |
| 57 | − LNBf voltages between 0 (normal) or a value grater than 0 for higher | |
| 58 | − voltages.</para> | |
| 59 | −&return-value-dvb; | |
| 60 | −</refsect1> | |
| 61 | −</refentry> | |
| @@ -1,266 +0,0 @@ | ||
| 1 | −<refentry id="FE_GET_INFO"> | |
| 2 | − <refmeta> | |
| 3 | − <refentrytitle>ioctl FE_GET_INFO</refentrytitle> | |
| 4 | − &manvol; | |
| 5 | − </refmeta> | |
| 6 | − | |
| 7 | − <refnamediv> | |
| 8 | − <refname>FE_GET_INFO</refname> | |
| 9 | − <refpurpose>Query DVB frontend capabilities and returns information about | |
| 10 | − the front-end. This call only requires read-only access to the device</refpurpose> | |
| 11 | − </refnamediv> | |
| 12 | − | |
| 13 | − <refsynopsisdiv> | |
| 14 | − <funcsynopsis> | |
| 15 | − <funcprototype> | |
| 16 | − <funcdef>int <function>ioctl</function></funcdef> | |
| 17 | − <paramdef>int <parameter>fd</parameter></paramdef> | |
| 18 | − <paramdef>int <parameter>request</parameter></paramdef> | |
| 19 | − <paramdef>struct dvb_frontend_info *<parameter>argp</parameter></paramdef> | |
| 20 | − </funcprototype> | |
| 21 | − </funcsynopsis> | |
| 22 | − </refsynopsisdiv> | |
| 23 | − | |
| 24 | − <refsect1> | |
| 25 | − <title>Arguments</title> | |
| 26 | − <variablelist> | |
| 27 | − <varlistentry> | |
| 28 | − <term><parameter>fd</parameter></term> | |
| 29 | − <listitem> | |
| 30 | − <para>&fe_fd;</para> | |
| 31 | − </listitem> | |
| 32 | − </varlistentry> | |
| 33 | − <varlistentry> | |
| 34 | − <term><parameter>request</parameter></term> | |
| 35 | − <listitem> | |
| 36 | − <para>FE_GET_INFO</para> | |
| 37 | − </listitem> | |
| 38 | − </varlistentry> | |
| 39 | − <varlistentry> | |
| 40 | − <term><parameter>argp</parameter></term> | |
| 41 | − <listitem> | |
| 42 | − <para>pointer to struct &dvb-frontend-info;</para> | |
| 43 | − </listitem> | |
| 44 | − </varlistentry> | |
| 45 | − </variablelist> | |
| 46 | − </refsect1> | |
| 47 | − | |
| 48 | − <refsect1> | |
| 49 | − <title>Description</title> | |
| 50 | − | |
| 51 | − <para>All DVB frontend devices support the | |
| 52 | −<constant>FE_GET_INFO</constant> ioctl. It is used to identify | |
| 53 | −kernel devices compatible with this specification and to obtain | |
| 54 | −information about driver and hardware capabilities. The ioctl takes a | |
| 55 | −pointer to dvb_frontend_info which is filled by the driver. When the | |
| 56 | −driver is not compatible with this specification the ioctl returns an error. | |
| 57 | −</para> | |
| 58 | −&return-value-dvb; | |
| 59 | − | |
| 60 | − <table pgwide="1" frame="none" id="dvb-frontend-info"> | |
| 61 | − <title>struct <structname>dvb_frontend_info</structname></title> | |
| 62 | − <tgroup cols="3"> | |
| 63 | − &cs-str; | |
| 64 | − <tbody valign="top"> | |
| 65 | − <row> | |
| 66 | − <entry>char</entry> | |
| 67 | − <entry>name[128]</entry> | |
| 68 | − <entry>Name of the frontend</entry> | |
| 69 | − </row><row> | |
| 70 | − <entry>fe_type_t</entry> | |
| 71 | − <entry>type</entry> | |
| 72 | − <entry><emphasis role="bold">DEPRECATED</emphasis>. DVBv3 type. Should not be used on modern programs, as a | |
| 73 | − frontend may have more than one type. So, the DVBv5 API should | |
| 74 | − be used instead to enumerate and select the frontend type.</entry> | |
| 75 | − </row><row> | |
| 76 | − <entry>uint32_t</entry> | |
| 77 | − <entry>frequency_min</entry> | |
| 78 | − <entry>Minimal frequency supported by the frontend</entry> | |
| 79 | − </row><row> | |
| 80 | − <entry>uint32_t</entry> | |
| 81 | − <entry>frequency_max</entry> | |
| 82 | − <entry>Maximal frequency supported by the frontend</entry> | |
| 83 | − </row><row> | |
| 84 | − <entry>uint32_t</entry> | |
| 85 | − <entry>frequency_stepsize</entry> | |
| 86 | − <entry>Frequency step - all frequencies are multiple of this value</entry> | |
| 87 | − </row><row> | |
| 88 | − <entry>uint32_t</entry> | |
| 89 | − <entry>frequency_tolerance</entry> | |
| 90 | − <entry>Tolerance of the frequency</entry> | |
| 91 | − </row><row> | |
| 92 | − <entry>uint32_t</entry> | |
| 93 | − <entry>symbol_rate_min</entry> | |
| 94 | − <entry>Minimal symbol rate (for Cable/Satellite systems), in bauds</entry> | |
| 95 | − </row><row> | |
| 96 | − <entry>uint32_t</entry> | |
| 97 | − <entry>symbol_rate_max</entry> | |
| 98 | − <entry>Maximal symbol rate (for Cable/Satellite systems), in bauds</entry> | |
| 99 | − </row><row> | |
| 100 | − <entry>uint32_t</entry> | |
| 101 | − <entry>symbol_rate_tolerance</entry> | |
| 102 | − <entry>Maximal symbol rate tolerance, in ppm</entry> | |
| 103 | − </row><row> | |
| 104 | − <entry>uint32_t</entry> | |
| 105 | − <entry>notifier_delay</entry> | |
| 106 | − <entry><emphasis role="bold">DEPRECATED</emphasis>. Not used by any driver.</entry> | |
| 107 | − </row><row> | |
| 108 | − <entry>&fe-caps;</entry> | |
| 109 | − <entry>caps</entry> | |
| 110 | − <entry>Capabilities supported by the frontend</entry> | |
| 111 | − </row> | |
| 112 | − </tbody> | |
| 113 | − </tgroup> | |
| 114 | − </table> | |
| 115 | − | |
| 116 | − <para>NOTE: The frequencies are specified in Hz for Terrestrial and Cable | |
| 117 | − systems. They're specified in kHz for Satellite systems</para> | |
| 118 | − </refsect1> | |
| 119 | − | |
| 120 | −<refsect1 id="fe-caps-t"> | |
| 121 | −<title>frontend capabilities</title> | |
| 122 | − | |
| 123 | −<para>Capabilities describe what a frontend can do. Some capabilities are | |
| 124 | − supported only on some specific frontend types.</para> | |
| 125 | − | |
| 126 | −<table pgwide="1" frame="none" id="fe-caps"> | |
| 127 | − <title>enum fe_caps</title> | |
| 128 | − <tgroup cols="2"> | |
| 129 | − &cs-def; | |
| 130 | − <thead> | |
| 131 | − <row> | |
| 132 | − <entry>ID</entry> | |
| 133 | − <entry>Description</entry> | |
| 134 | − </row> | |
| 135 | − </thead> | |
| 136 | − <tbody valign="top"> | |
| 137 | − <row> | |
| 138 | − <entry id="FE-IS-STUPID"><constant>FE_IS_STUPID</constant></entry> | |
| 139 | − <entry>There's something wrong at the frontend, and it can't | |
| 140 | − report its capabilities</entry> | |
| 141 | − </row> | |
| 142 | − <row> | |
| 143 | − <entry id="FE-CAN-INVERSION-AUTO"><constant>FE_CAN_INVERSION_AUTO</constant></entry> | |
| 144 | − <entry>The frontend is capable of auto-detecting inversion</entry> | |
| 145 | − </row> | |
| 146 | − <row> | |
| 147 | − <entry id="FE-CAN-FEC-1-2"><constant>FE_CAN_FEC_1_2</constant></entry> | |
| 148 | − <entry>The frontend supports FEC 1/2</entry> | |
| 149 | − </row> | |
| 150 | − <row> | |
| 151 | − <entry id="FE-CAN-FEC-2-3"><constant>FE_CAN_FEC_2_3</constant></entry> | |
| 152 | − <entry>The frontend supports FEC 2/3</entry> | |
| 153 | − </row> | |
| 154 | − <row> | |
| 155 | − <entry id="FE-CAN-FEC-3-4"><constant>FE_CAN_FEC_3_4</constant></entry> | |
| 156 | − <entry>The frontend supports FEC 3/4</entry> | |
| 157 | − </row> | |
| 158 | − <row> | |
| 159 | − <entry id="FE-CAN-FEC-4-5"><constant>FE_CAN_FEC_4_5</constant></entry> | |
| 160 | − <entry>The frontend supports FEC 4/5</entry> | |
| 161 | − </row> | |
| 162 | − <row> | |
| 163 | − <entry id="FE-CAN-FEC-5-6"><constant>FE_CAN_FEC_5_6</constant></entry> | |
| 164 | − <entry>The frontend supports FEC 5/6</entry> | |
| 165 | − </row> | |
| 166 | − <row> | |
| 167 | − <entry id="FE-CAN-FEC-6-7"><constant>FE_CAN_FEC_6_7</constant></entry> | |
| 168 | − <entry>The frontend supports FEC 6/7</entry> | |
| 169 | − </row> | |
| 170 | − <row> | |
| 171 | − <entry id="FE-CAN-FEC-7-8"><constant>FE_CAN_FEC_7_8</constant></entry> | |
| 172 | − <entry>The frontend supports FEC 7/8</entry> | |
| 173 | − </row> | |
| 174 | − <row> | |
| 175 | − <entry id="FE-CAN-FEC-8-9"><constant>FE_CAN_FEC_8_9</constant></entry> | |
| 176 | − <entry>The frontend supports FEC 8/9</entry> | |
| 177 | − </row> | |
| 178 | − <row> | |
| 179 | − <entry id="FE-CAN-FEC-AUTO"><constant>FE_CAN_FEC_AUTO</constant></entry> | |
| 180 | − <entry>The frontend can autodetect FEC.</entry> | |
| 181 | − </row> | |
| 182 | − <row> | |
| 183 | − <entry id="FE-CAN-QPSK"><constant>FE_CAN_QPSK</constant></entry> | |
| 184 | − <entry>The frontend supports QPSK modulation</entry> | |
| 185 | − </row> | |
| 186 | − <row> | |
| 187 | − <entry id="FE-CAN-QAM-16"><constant>FE_CAN_QAM_16</constant></entry> | |
| 188 | − <entry>The frontend supports 16-QAM modulation</entry> | |
| 189 | − </row> | |
| 190 | − <row> | |
| 191 | − <entry id="FE-CAN-QAM-32"><constant>FE_CAN_QAM_32</constant></entry> | |
| 192 | − <entry>The frontend supports 32-QAM modulation</entry> | |
| 193 | − </row> | |
| 194 | − <row> | |
| 195 | − <entry id="FE-CAN-QAM-64"><constant>FE_CAN_QAM_64</constant></entry> | |
| 196 | − <entry>The frontend supports 64-QAM modulation</entry> | |
| 197 | − </row> | |
| 198 | − <row> | |
| 199 | − <entry id="FE-CAN-QAM-128"><constant>FE_CAN_QAM_128</constant></entry> | |
| 200 | − <entry>The frontend supports 128-QAM modulation</entry> | |
| 201 | − </row> | |
| 202 | − <row> | |
| 203 | − <entry id="FE-CAN-QAM-256"><constant>FE_CAN_QAM_256</constant></entry> | |
| 204 | − <entry>The frontend supports 256-QAM modulation</entry> | |
| 205 | − </row> | |
| 206 | − <row> | |
| 207 | − <entry id="FE-CAN-QAM-AUTO"><constant>FE_CAN_QAM_AUTO</constant></entry> | |
| 208 | − <entry>The frontend can autodetect modulation</entry> | |
| 209 | − </row> | |
| 210 | − <row> | |
| 211 | − <entry id="FE-CAN-TRANSMISSION-MODE-AUTO"><constant>FE_CAN_TRANSMISSION_MODE_AUTO</constant></entry> | |
| 212 | − <entry>The frontend can autodetect the transmission mode</entry> | |
| 213 | − </row> | |
| 214 | − <row> | |
| 215 | − <entry id="FE-CAN-BANDWIDTH-AUTO"><constant>FE_CAN_BANDWIDTH_AUTO</constant></entry> | |
| 216 | − <entry>The frontend can autodetect the bandwidth</entry> | |
| 217 | − </row> | |
| 218 | − <row> | |
| 219 | − <entry id="FE-CAN-GUARD-INTERVAL-AUTO"><constant>FE_CAN_GUARD_INTERVAL_AUTO</constant></entry> | |
| 220 | − <entry>The frontend can autodetect the guard interval</entry> | |
| 221 | − </row> | |
| 222 | − <row> | |
| 223 | − <entry id="FE-CAN-HIERARCHY-AUTO"><constant>FE_CAN_HIERARCHY_AUTO</constant></entry> | |
| 224 | − <entry>The frontend can autodetect hierarch</entry> | |
| 225 | − </row> | |
| 226 | − <row> | |
| 227 | − <entry id="FE-CAN-8VSB"><constant>FE_CAN_8VSB</constant></entry> | |
| 228 | − <entry>The frontend supports 8-VSB modulation</entry> | |
| 229 | − </row> | |
| 230 | − <row> | |
| 231 | − <entry id="FE-CAN-16VSB"><constant>FE_CAN_16VSB</constant></entry> | |
| 232 | − <entry>The frontend supports 16-VSB modulation</entry> | |
| 233 | − </row> | |
| 234 | − <row> | |
| 235 | − <entry id="FE-HAS-EXTENDED-CAPS"><constant>FE_HAS_EXTENDED_CAPS</constant></entry> | |
| 236 | − <entry>Currently, unused</entry> | |
| 237 | − </row> | |
| 238 | − <row> | |
| 239 | − <entry id="FE-CAN-MULTISTREAM"><constant>FE_CAN_MULTISTREAM</constant></entry> | |
| 240 | − <entry>The frontend supports multistream filtering</entry> | |
| 241 | − </row> | |
| 242 | − <row> | |
| 243 | − <entry id="FE-CAN-TURBO-FEC"><constant>FE_CAN_TURBO_FEC</constant></entry> | |
| 244 | − <entry>The frontend supports turbo FEC modulation</entry> | |
| 245 | − </row> | |
| 246 | − <row> | |
| 247 | − <entry id="FE-CAN-2G-MODULATION"><constant>FE_CAN_2G_MODULATION</constant></entry> | |
| 248 | − <entry>The frontend supports "2nd generation modulation" (DVB-S2/T2)></entry> | |
| 249 | − </row> | |
| 250 | − <row> | |
| 251 | − <entry id="FE-NEEDS-BENDING"><constant>FE_NEEDS_BENDING</constant></entry> | |
| 252 | − <entry>Not supported anymore, don't use it</entry> | |
| 253 | − </row> | |
| 254 | − <row> | |
| 255 | − <entry id="FE-CAN-RECOVER"><constant>FE_CAN_RECOVER</constant></entry> | |
| 256 | − <entry>The frontend can recover from a cable unplug automatically</entry> | |
| 257 | − </row> | |
| 258 | − <row> | |
| 259 | − <entry id="FE-CAN-MUTE-TS"><constant>FE_CAN_MUTE_TS</constant></entry> | |
| 260 | − <entry>The frontend can stop spurious TS data output</entry> | |
| 261 | − </row> | |
| 262 | − </tbody> | |
| 263 | − </tgroup> | |
| 264 | −</table> | |
| 265 | −</refsect1> | |
| 266 | −</refentry> | |
| @@ -1,81 +0,0 @@ | ||
| 1 | −<refentry id="FE_GET_PROPERTY"> | |
| 2 | − <refmeta> | |
| 3 | − <refentrytitle>ioctl FE_SET_PROPERTY, FE_GET_PROPERTY</refentrytitle> | |
| 4 | − &manvol; | |
| 5 | − </refmeta> | |
| 6 | − | |
| 7 | − <refnamediv> | |
| 8 | − <refname>FE_SET_PROPERTY</refname> | |
| 9 | − <refname>FE_GET_PROPERTY</refname> | |
| 10 | − <refpurpose>FE_SET_PROPERTY sets one or more frontend properties. | |
| 11 | − FE_GET_PROPERTY returns one or more frontend properties.</refpurpose> | |
| 12 | − </refnamediv> | |
| 13 | − | |
| 14 | − <refsynopsisdiv> | |
| 15 | − <funcsynopsis> | |
| 16 | − <funcprototype> | |
| 17 | − <funcdef>int <function>ioctl</function></funcdef> | |
| 18 | − <paramdef>int <parameter>fd</parameter></paramdef> | |
| 19 | − <paramdef>int <parameter>request</parameter></paramdef> | |
| 20 | − <paramdef>struct dtv_properties *<parameter>argp</parameter></paramdef> | |
| 21 | − </funcprototype> | |
| 22 | − </funcsynopsis> | |
| 23 | − </refsynopsisdiv> | |
| 24 | − | |
| 25 | − <refsect1> | |
| 26 | − <title>Arguments</title> | |
| 27 | − <variablelist> | |
| 28 | − <varlistentry> | |
| 29 | − <term><parameter>fd</parameter></term> | |
| 30 | − <listitem> | |
| 31 | − <para>&fe_fd;</para> | |
| 32 | − </listitem> | |
| 33 | − </varlistentry> | |
| 34 | − <varlistentry> | |
| 35 | − <term><parameter>request</parameter></term> | |
| 36 | − <listitem> | |
| 37 | − <para>FE_SET_PROPERTY, FE_GET_PROPERTY</para> | |
| 38 | − </listitem> | |
| 39 | − </varlistentry> | |
| 40 | − <varlistentry> | |
| 41 | − <term><parameter>argp</parameter></term> | |
| 42 | − <listitem> | |
| 43 | − <para>pointer to &dtv-properties;</para> | |
| 44 | − </listitem> | |
| 45 | − </varlistentry> | |
| 46 | − </variablelist> | |
| 47 | − </refsect1> | |
| 48 | − | |
| 49 | − <refsect1> | |
| 50 | − <title>Description</title> | |
| 51 | − | |
| 52 | − <para>All DVB frontend devices support the | |
| 53 | −<constant>FE_SET_PROPERTY</constant> and <constant>FE_GET_PROPERTY</constant> | |
| 54 | −ioctls. The supported properties and statistics depends on the delivery system | |
| 55 | −and on the device:</para> | |
| 56 | −<itemizedlist> | |
| 57 | −<listitem> | |
| 58 | − <para><constant>FE_SET_PROPERTY:</constant></para> | |
| 59 | −<itemizedlist> | |
| 60 | −<listitem><para>This ioctl is used to set one or more | |
| 61 | − frontend properties.</para></listitem> | |
| 62 | −<listitem><para>This is the basic command to request the frontend to tune into some | |
| 63 | − frequency and to start decoding the digital TV signal.</para></listitem> | |
| 64 | −<listitem><para>This call requires read/write access to the device.</para></listitem> | |
| 65 | −<listitem><para>At return, the values are updated to reflect the | |
| 66 | − actual parameters used.</para></listitem> | |
| 67 | −</itemizedlist> | |
| 68 | −</listitem> | |
| 69 | −<listitem> | |
| 70 | − <para><constant>FE_GET_PROPERTY:</constant></para> | |
| 71 | −<itemizedlist> | |
| 72 | −<listitem><para>This ioctl is used to get properties and | |
| 73 | −statistics from the frontend.</para></listitem> | |
| 74 | −<listitem><para>No properties are changed, and statistics aren't reset.</para></listitem> | |
| 75 | −<listitem><para>This call only requires read-only access to the device.</para></listitem> | |
| 76 | −</itemizedlist> | |
| 77 | −</listitem> | |
| 78 | −</itemizedlist> | |
| 79 | −&return-value-dvb; | |
| 80 | −</refsect1> | |
| 81 | −</refentry> | |
| @@ -1,107 +0,0 @@ | ||
| 1 | −<refentry id="FE_READ_STATUS"> | |
| 2 | − <refmeta> | |
| 3 | − <refentrytitle>ioctl FE_READ_STATUS</refentrytitle> | |
| 4 | − &manvol; | |
| 5 | − </refmeta> | |
| 6 | − | |
| 7 | − <refnamediv> | |
| 8 | − <refname>FE_READ_STATUS</refname> | |
| 9 | − <refpurpose>Returns status information about the front-end. This call only | |
| 10 | − requires read-only access to the device</refpurpose> | |
| 11 | − </refnamediv> | |
| 12 | − | |
| 13 | − <refsynopsisdiv> | |
| 14 | − <funcsynopsis> | |
| 15 | − <funcprototype> | |
| 16 | − <funcdef>int <function>ioctl</function></funcdef> | |
| 17 | − <paramdef>int <parameter>fd</parameter></paramdef> | |
| 18 | − <paramdef>int <parameter>request</parameter></paramdef> | |
| 19 | − <paramdef>unsigned int *<parameter>status</parameter></paramdef> | |
| 20 | − </funcprototype> | |
| 21 | − </funcsynopsis> | |
| 22 | − </refsynopsisdiv> | |
| 23 | − | |
| 24 | − <refsect1> | |
| 25 | − <title>Arguments</title> | |
| 26 | − <variablelist> | |
| 27 | − <varlistentry> | |
| 28 | − <term><parameter>fd</parameter></term> | |
| 29 | − <listitem> | |
| 30 | − <para>&fe_fd;</para> | |
| 31 | − </listitem> | |
| 32 | − </varlistentry> | |
| 33 | − <varlistentry> | |
| 34 | − <term><parameter>request</parameter></term> | |
| 35 | − <listitem> | |
| 36 | − <para>FE_READ_STATUS</para> | |
| 37 | − </listitem> | |
| 38 | − </varlistentry> | |
| 39 | − <varlistentry> | |
| 40 | − <term><parameter>status</parameter></term> | |
| 41 | − <listitem> | |
| 42 | − <para>pointer to a bitmask integer filled with the values defined by | |
| 43 | − &fe-status;.</para> | |
| 44 | − </listitem> | |
| 45 | − </varlistentry> | |
| 46 | − </variablelist> | |
| 47 | − </refsect1> | |
| 48 | − | |
| 49 | − <refsect1> | |
| 50 | − <title>Description</title> | |
| 51 | − | |
| 52 | − <para>All DVB frontend devices support the | |
| 53 | −<constant>FE_READ_STATUS</constant> ioctl. It is used to check about the | |
| 54 | −locking status of the frontend after being tuned. The ioctl takes a | |
| 55 | −pointer to an integer where the status will be written. | |
| 56 | −</para> | |
| 57 | −<para>NOTE: the size of status is actually sizeof(enum fe_status), with varies | |
| 58 | − according with the architecture. This needs to be fixed in the future.</para> | |
| 59 | −&return-value-dvb; | |
| 60 | −</refsect1> | |
| 61 | − | |
| 62 | −<refsect1 id="fe-status-t"> | |
| 63 | −<title>int fe_status</title> | |
| 64 | − | |
| 65 | −<para>The fe_status parameter is used to indicate the current state | |
| 66 | − and/or state changes of the frontend hardware. It is produced using | |
| 67 | − the &fe-status; values on a bitmask</para> | |
| 68 | − | |
| 69 | −<table pgwide="1" frame="none" id="fe-status"> | |
| 70 | − <title>enum fe_status</title> | |
| 71 | − <tgroup cols="2"> | |
| 72 | − &cs-def; | |
| 73 | − <thead> | |
| 74 | − <row> | |
| 75 | − <entry>ID</entry> | |
| 76 | − <entry>Description</entry> | |
| 77 | − </row> | |
| 78 | − </thead> | |
| 79 | − <tbody valign="top"> | |
| 80 | − <row> | |
| 81 | − <entry align="char" id="FE-HAS-SIGNAL"><constant>FE_HAS_SIGNAL</constant></entry> | |
| 82 | − <entry align="char">The frontend has found something above the noise level</entry> | |
| 83 | − </row><row> | |
| 84 | − <entry align="char" id="FE-HAS-CARRIER"><constant>FE_HAS_CARRIER</constant></entry> | |
| 85 | − <entry align="char">The frontend has found a DVB signal</entry> | |
| 86 | − </row><row> | |
| 87 | − <entry align="char" id="FE-HAS-VITERBI"><constant>FE_HAS_VITERBI</constant></entry> | |
| 88 | − <entry align="char">The frontend FEC inner coding (Viterbi, LDPC or other inner code) is stable</entry> | |
| 89 | − </row><row> | |
| 90 | − <entry align="char" id="FE-HAS-SYNC"><constant>FE_HAS_SYNC</constant></entry> | |
| 91 | − <entry align="char">Synchronization bytes was found</entry> | |
| 92 | − </row><row> | |
| 93 | − <entry align="char" id="FE-HAS-LOCK"><constant>FE_HAS_LOCK</constant></entry> | |
| 94 | − <entry align="char">The DVB were locked and everything is working</entry> | |
| 95 | − </row><row> | |
| 96 | − <entry align="char" id="FE-TIMEDOUT"><constant>FE_TIMEDOUT</constant></entry> | |
| 97 | − <entry align="char">no lock within the last about 2 seconds</entry> | |
| 98 | − </row><row> | |
| 99 | − <entry align="char" id="FE-REINIT"><constant>FE_REINIT</constant></entry> | |
| 100 | − <entry align="char">The frontend was reinitialized, application is | |
| 101 | − recommended to reset DiSEqC, tone and parameters</entry> | |
| 102 | − </row> | |
| 103 | − </tbody> | |
| 104 | − </tgroup> | |
| 105 | −</table> | |
| 106 | −</refsect1> | |
| 107 | −</refentry> | |
| @@ -1,64 +0,0 @@ | ||
| 1 | −<refentry id="FE_SET_FRONTEND_TUNE_MODE"> | |
| 2 | − <refmeta> | |
| 3 | − <refentrytitle>ioctl FE_SET_FRONTEND_TUNE_MODE</refentrytitle> | |
| 4 | − &manvol; | |
| 5 | − </refmeta> | |
| 6 | − | |
| 7 | − <refnamediv> | |
| 8 | − <refname>FE_SET_FRONTEND_TUNE_MODE</refname> | |
| 9 | − <refpurpose>Allow setting tuner mode flags to the frontend.</refpurpose> | |
| 10 | − </refnamediv> | |
| 11 | − | |
| 12 | − <refsynopsisdiv> | |
| 13 | − <funcsynopsis> | |
| 14 | − <funcprototype> | |
| 15 | − <funcdef>int <function>ioctl</function></funcdef> | |
| 16 | − <paramdef>int <parameter>fd</parameter></paramdef> | |
| 17 | − <paramdef>int <parameter>request</parameter></paramdef> | |
| 18 | − <paramdef>unsigned int <parameter>flags</parameter></paramdef> | |
| 19 | − </funcprototype> | |
| 20 | − </funcsynopsis> | |
| 21 | − </refsynopsisdiv> | |
| 22 | − | |
| 23 | − <refsect1> | |
| 24 | − <title>Arguments</title> | |
| 25 | − <variablelist> | |
| 26 | − <varlistentry> | |
| 27 | − <term><parameter>fd</parameter></term> | |
| 28 | − <listitem> | |
| 29 | − <para>&fe_fd;</para> | |
| 30 | − </listitem> | |
| 31 | − </varlistentry> | |
| 32 | − <varlistentry> | |
| 33 | − <term><parameter>request</parameter></term> | |
| 34 | − <listitem> | |
| 35 | − <para>FE_SET_FRONTEND_TUNE_MODE</para> | |
| 36 | − </listitem> | |
| 37 | − </varlistentry> | |
| 38 | − <varlistentry> | |
| 39 | − <term><parameter>flags</parameter></term> | |
| 40 | − <listitem> | |
| 41 | − <para>Valid flags:</para> | |
| 42 | − <itemizedlist> | |
| 43 | − <listitem><para>0 - normal tune mode</para></listitem> | |
| 44 | − <listitem><para>FE_TUNE_MODE_ONESHOT - When set, this flag will | |
| 45 | − disable any zigzagging or other "normal" tuning behaviour. | |
| 46 | − Additionally, there will be no automatic monitoring of the | |
| 47 | − lock status, and hence no frontend events will be | |
| 48 | − generated. If a frontend device is closed, this flag will | |
| 49 | − be automatically turned off when the device is reopened | |
| 50 | − read-write.</para></listitem> | |
| 51 | − </itemizedlist> | |
| 52 | − </listitem> | |
| 53 | − </varlistentry> | |
| 54 | − </variablelist> | |
| 55 | − </refsect1> | |
| 56 | − | |
| 57 | − <refsect1> | |
| 58 | − <title>Description</title> | |
| 59 | − | |
| 60 | − <para>Allow setting tuner mode flags to the frontend, between 0 (normal) | |
| 61 | − or FE_TUNE_MODE_ONESHOT mode</para> | |
| 62 | −&return-value-dvb; | |
| 63 | −</refsect1> | |
| 64 | −</refentry> | |
| @@ -1,91 +0,0 @@ | ||
| 1 | −<refentry id="FE_SET_TONE"> | |
| 2 | − <refmeta> | |
| 3 | − <refentrytitle>ioctl FE_SET_TONE</refentrytitle> | |
| 4 | − &manvol; | |
| 5 | − </refmeta> | |
| 6 | − | |
| 7 | − <refnamediv> | |
| 8 | − <refname>FE_SET_TONE</refname> | |
| 9 | − <refpurpose>Sets/resets the generation of the continuous 22kHz tone.</refpurpose> | |
| 10 | − </refnamediv> | |
| 11 | − | |
| 12 | − <refsynopsisdiv> | |
| 13 | − <funcsynopsis> | |
| 14 | − <funcprototype> | |
| 15 | − <funcdef>int <function>ioctl</function></funcdef> | |
| 16 | − <paramdef>int <parameter>fd</parameter></paramdef> | |
| 17 | − <paramdef>int <parameter>request</parameter></paramdef> | |
| 18 | − <paramdef>enum fe_sec_tone_mode *<parameter>tone</parameter></paramdef> | |
| 19 | − </funcprototype> | |
| 20 | − </funcsynopsis> | |
| 21 | − </refsynopsisdiv> | |
| 22 | − | |
| 23 | − <refsect1> | |
| 24 | − <title>Arguments</title> | |
| 25 | − <variablelist> | |
| 26 | − <varlistentry> | |
| 27 | − <term><parameter>fd</parameter></term> | |
| 28 | − <listitem> | |
| 29 | − <para>&fe_fd;</para> | |
| 30 | − </listitem> | |
| 31 | − </varlistentry> | |
| 32 | − <varlistentry> | |
| 33 | − <term><parameter>request</parameter></term> | |
| 34 | − <listitem> | |
| 35 | − <para>FE_SET_TONE</para> | |
| 36 | − </listitem> | |
| 37 | − </varlistentry> | |
| 38 | − <varlistentry> | |
| 39 | − <term><parameter>tone</parameter></term> | |
| 40 | − <listitem> | |
| 41 | − <para>pointer to &fe-sec-tone-mode;</para> | |
| 42 | − </listitem> | |
| 43 | − </varlistentry> | |
| 44 | − </variablelist> | |
| 45 | − </refsect1> | |
| 46 | − | |
| 47 | − <refsect1> | |
| 48 | − <title>Description</title> | |
| 49 | − | |
| 50 | −<para>This ioctl is used to set the generation of the continuous 22kHz tone. | |
| 51 | − This call requires read/write permissions.</para> | |
| 52 | −<para>Usually, satellite antenna subsystems require that the digital TV | |
| 53 | − device to send a 22kHz tone in order to select between high/low band on | |
| 54 | − some dual-band LNBf. It is also used to send signals to DiSEqC equipment, | |
| 55 | − but this is done using the DiSEqC ioctls.</para> | |
| 56 | −<para>NOTE: if more than one device is connected to the same antenna, | |
| 57 | − setting a tone may interfere on other devices, as they may lose | |
| 58 | − the capability of selecting the band. So, it is recommended that | |
| 59 | − applications would change to SEC_TONE_OFF when the device is not used.</para> | |
| 60 | − | |
| 61 | −&return-value-dvb; | |
| 62 | −</refsect1> | |
| 63 | − | |
| 64 | −<refsect1 id="fe-sec-tone-mode-t"> | |
| 65 | −<title>enum fe_sec_tone_mode</title> | |
| 66 | − | |
| 67 | −<table pgwide="1" frame="none" id="fe-sec-tone-mode"> | |
| 68 | − <title>enum fe_sec_tone_mode</title> | |
| 69 | − <tgroup cols="2"> | |
| 70 | − &cs-def; | |
| 71 | − <thead> | |
| 72 | − <row> | |
| 73 | − <entry>ID</entry> | |
| 74 | − <entry>Description</entry> | |
| 75 | − </row> | |
| 76 | − </thead> | |
| 77 | − <tbody valign="top"> | |
| 78 | − <row> | |
| 79 | − <entry align="char" id="SEC-TONE-ON"><constant>SEC_TONE_ON</constant></entry> | |
| 80 | − <entry align="char">Sends a 22kHz tone burst to the antenna</entry> | |
| 81 | − </row><row> | |
| 82 | − <entry align="char" id="SEC-TONE-OFF"><constant>SEC_TONE_OFF</constant></entry> | |
| 83 | − <entry align="char">Don't send a 22kHz tone to the antenna | |
| 84 | − (except if the FE_DISEQC_* ioctls are called)</entry> | |
| 85 | − </row> | |
| 86 | − </tbody> | |
| 87 | − </tgroup> | |
| 88 | −</table> | |
| 89 | −</refsect1> | |
| 90 | − | |
| 91 | −</refentry> | |
| @@ -1,69 +0,0 @@ | ||
| 1 | −<refentry id="FE_SET_VOLTAGE"> | |
| 2 | − <refmeta> | |
| 3 | − <refentrytitle>ioctl FE_SET_VOLTAGE</refentrytitle> | |
| 4 | − &manvol; | |
| 5 | − </refmeta> | |
| 6 | − | |
| 7 | − <refnamediv> | |
| 8 | − <refname>FE_SET_VOLTAGE</refname> | |
| 9 | − <refpurpose>Allow setting the DC level sent to the antenna subsystem.</refpurpose> | |
| 10 | − </refnamediv> | |
| 11 | − | |
| 12 | − <refsynopsisdiv> | |
| 13 | − <funcsynopsis> | |
| 14 | − <funcprototype> | |
| 15 | − <funcdef>int <function>ioctl</function></funcdef> | |
| 16 | − <paramdef>int <parameter>fd</parameter></paramdef> | |
| 17 | − <paramdef>int <parameter>request</parameter></paramdef> | |
| 18 | − <paramdef>enum fe_sec_voltage *<parameter>voltage</parameter></paramdef> | |
| 19 | − </funcprototype> | |
| 20 | − </funcsynopsis> | |
| 21 | − </refsynopsisdiv> | |
| 22 | − | |
| 23 | − <refsect1> | |
| 24 | − <title>Arguments</title> | |
| 25 | − <variablelist> | |
| 26 | − <varlistentry> | |
| 27 | − <term><parameter>fd</parameter></term> | |
| 28 | − <listitem> | |
| 29 | − <para>&fe_fd;</para> | |
| 30 | − </listitem> | |
| 31 | − </varlistentry> | |
| 32 | − <varlistentry> | |
| 33 | − <term><parameter>request</parameter></term> | |
| 34 | − <listitem> | |
| 35 | − <para>FE_SET_VOLTAGE</para> | |
| 36 | − </listitem> | |
| 37 | − </varlistentry> | |
| 38 | − <varlistentry> | |
| 39 | − <term><parameter>voltage</parameter></term> | |
| 40 | − <listitem> | |
| 41 | − <para>pointer to &fe-sec-voltage;</para> | |
| 42 | − <para>Valid values are described at &fe-sec-voltage;.</para> | |
| 43 | − </listitem> | |
| 44 | − </varlistentry> | |
| 45 | − </variablelist> | |
| 46 | − </refsect1> | |
| 47 | − | |
| 48 | − <refsect1> | |
| 49 | − <title>Description</title> | |
| 50 | − | |
| 51 | −<para>This ioctl allows to set the DC voltage level sent through the antenna | |
| 52 | − cable to 13V, 18V or off.</para> | |
| 53 | −<para>Usually, a satellite antenna subsystems require that the digital TV | |
| 54 | − device to send a DC voltage to feed power to the LNBf. Depending on the | |
| 55 | − LNBf type, the polarization or the intermediate frequency (IF) of the LNBf | |
| 56 | − can controlled by the voltage level. Other devices (for example, the ones | |
| 57 | − that implement DISEqC and multipoint LNBf's don't need to control the | |
| 58 | − voltage level, provided that either 13V or 18V is sent to power up the | |
| 59 | − LNBf.</para> | |
| 60 | −<para>NOTE: if more than one device is connected to the same antenna, | |
| 61 | − setting a voltage level may interfere on other devices, as they may lose | |
| 62 | − the capability of setting polarization or IF. So, on those | |
| 63 | − cases, setting the voltage to SEC_VOLTAGE_OFF while the device is not is | |
| 64 | − used is recommended.</para> | |
| 65 | − | |
| 66 | −&return-value-dvb; | |
| 67 | −</refsect1> | |
| 68 | − | |
| 69 | −</refentry> | |
| @@ -1,269 +0,0 @@ | ||
| 1 | −<title>DVB Frontend API</title> | |
| 2 | − | |
| 3 | −<para>The DVB frontend API was designed to support three types of delivery systems:</para> | |
| 4 | −<itemizedlist> | |
| 5 | − <listitem><para>Terrestrial systems: DVB-T, DVB-T2, ATSC, ATSC M/H, ISDB-T, DVB-H, DTMB, CMMB</para></listitem> | |
| 6 | − <listitem><para>Cable systems: DVB-C Annex A/C, ClearQAM (DVB-C Annex B), ISDB-C</para></listitem> | |
| 7 | − <listitem><para>Satellite systems: DVB-S, DVB-S2, DVB Turbo, ISDB-S, DSS</para></listitem> | |
| 8 | −</itemizedlist> | |
| 9 | −<para>The DVB frontend controls several sub-devices including:</para> | |
| 10 | −<itemizedlist> | |
| 11 | − <listitem><para>Tuner</para></listitem> | |
| 12 | − <listitem><para>Digital TV demodulator</para></listitem> | |
| 13 | − <listitem><para>Low noise amplifier (LNA)</para></listitem> | |
| 14 | − <listitem><para>Satellite Equipment Control (SEC) hardware (only for Satellite).</para></listitem> | |
| 15 | −</itemizedlist> | |
| 16 | −<para>The frontend can be accessed through | |
| 17 | − <constant>/dev/dvb/adapter?/frontend?</constant>. Data types and | |
| 18 | − ioctl definitions can be accessed by including | |
| 19 | − <constant>linux/dvb/frontend.h</constant> in your application. | |
| 20 | −</para> | |
| 21 | − | |
| 22 | −<para>NOTE: Transmission via the internet (DVB-IP) | |
| 23 | − is not yet handled by this API but a future extension is possible.</para> | |
| 24 | −<para>On Satellite systems, the API support for the Satellite Equipment Control | |
| 25 | − (SEC) allows to power control and to send/receive signals to control the | |
| 26 | − antenna subsystem, selecting the polarization and choosing the Intermediate | |
| 27 | − Frequency IF) of the Low Noise Block Converter Feed Horn (LNBf). It | |
| 28 | − supports the DiSEqC and V-SEC protocols. The DiSEqC (digital SEC) | |
| 29 | −specification is available at | |
| 30 | −<ulink url="http://www.eutelsat.com/satellites/4_5_5.html">Eutelsat</ulink>.</para> | |
| 31 | − | |
| 32 | −<section id="query-dvb-frontend-info"> | |
| 33 | −<title>Querying frontend information</title> | |
| 34 | − | |
| 35 | −<para>Usually, the first thing to do when the frontend is opened is to | |
| 36 | − check the frontend capabilities. This is done using <link linkend="FE_GET_INFO">FE_GET_INFO</link>. This ioctl will enumerate | |
| 37 | − the DVB API version and other characteristics about the frontend, and | |
| 38 | − can be opened either in read only or read/write mode.</para> | |
| 39 | −</section> | |
| 40 | − | |
| 41 | −<section id="dvb-fe-read-status"> | |
| 42 | −<title>Querying frontend status and statistics</title> | |
| 43 | − | |
| 44 | −<para>Once <link linkend="FE_GET_PROPERTY"><constant>FE_SET_PROPERTY</constant></link> | |
| 45 | − is called, the frontend will run a kernel thread that will periodically | |
| 46 | − check for the tuner lock status and provide statistics about the quality | |
| 47 | − of the signal.</para> | |
| 48 | −<para>The information about the frontend tuner locking status can be queried | |
| 49 | − using <link linkend="FE_READ_STATUS">FE_READ_STATUS</link>.</para> | |
| 50 | −<para>Signal statistics are provided via <link linkend="FE_GET_PROPERTY"><constant>FE_GET_PROPERTY</constant></link>. | |
| 51 | − Please note that several statistics require the demodulator to be fully | |
| 52 | − locked (e. g. with FE_HAS_LOCK bit set). See | |
| 53 | − <link linkend="frontend-stat-properties">Frontend statistics indicators</link> | |
| 54 | − for more details.</para> | |
| 55 | −</section> | |
| 56 | − | |
| 57 | −&sub-dvbproperty; | |
| 58 | − | |
| 59 | −<section id="frontend_fcalls"> | |
| 60 | −<title>Frontend Function Calls</title> | |
| 61 | − | |
| 62 | −<refentry id="frontend_f_open"> | |
| 63 | − <refmeta> | |
| 64 | − <refentrytitle>DVB frontend open()</refentrytitle> | |
| 65 | − &manvol; | |
| 66 | − </refmeta> | |
| 67 | − | |
| 68 | − <refnamediv> | |
| 69 | − <refname>fe-open</refname> | |
| 70 | − <refpurpose>Open a frontend device</refpurpose> | |
| 71 | − </refnamediv> | |
| 72 | − | |
| 73 | − <refsynopsisdiv> | |
| 74 | − <funcsynopsis> | |
| 75 | − <funcsynopsisinfo>#include <fcntl.h></funcsynopsisinfo> | |
| 76 | − <funcprototype> | |
| 77 | − <funcdef>int <function>open</function></funcdef> | |
| 78 | − <paramdef>const char *<parameter>device_name</parameter></paramdef> | |
| 79 | − <paramdef>int <parameter>flags</parameter></paramdef> | |
| 80 | − </funcprototype> | |
| 81 | − </funcsynopsis> | |
| 82 | − </refsynopsisdiv> | |
| 83 | − | |
| 84 | − <refsect1> | |
| 85 | − <title>Arguments</title> | |
| 86 | − | |
| 87 | − <variablelist> | |
| 88 | − <varlistentry> | |
| 89 | − <term><parameter>device_name</parameter></term> | |
| 90 | − <listitem> | |
| 91 | − <para>Device to be opened.</para> | |
| 92 | − </listitem> | |
| 93 | − </varlistentry> | |
| 94 | − <varlistentry> | |
| 95 | − <term><parameter>flags</parameter></term> | |
| 96 | − <listitem> | |
| 97 | − <para>Open flags. Access can either be | |
| 98 | − <constant>O_RDWR</constant> or <constant>O_RDONLY</constant>.</para> | |
| 99 | − <para>Multiple opens are allowed with <constant>O_RDONLY</constant>. In this mode, only query and read ioctls are allowed.</para> | |
| 100 | − <para>Only one open is allowed in <constant>O_RDWR</constant>. In this mode, all ioctls are allowed.</para> | |
| 101 | − <para>When the <constant>O_NONBLOCK</constant> flag is given, the system calls may return &EAGAIN; when no data is available or when the device driver is temporarily busy.</para> | |
| 102 | − <para>Other flags have no effect.</para> | |
| 103 | − </listitem> | |
| 104 | − </varlistentry> | |
| 105 | − </variablelist> | |
| 106 | − </refsect1> | |
| 107 | − <refsect1> | |
| 108 | − <title>Description</title> | |
| 109 | − <para>This system call opens a named frontend device (<constant>/dev/dvb/adapter?/frontend?</constant>) | |
| 110 | − for subsequent use. Usually the first thing to do after a successful open is to | |
| 111 | − find out the frontend type with <link linkend="FE_GET_INFO">FE_GET_INFO</link>.</para> | |
| 112 | −<para>The device can be opened in read-only mode, which only allows monitoring of | |
| 113 | − device status and statistics, or read/write mode, which allows any kind of use | |
| 114 | − (e.g. performing tuning operations.) | |
| 115 | −</para> | |
| 116 | −<para>In a system with multiple front-ends, it is usually the case that multiple devices | |
| 117 | − cannot be open in read/write mode simultaneously. As long as a front-end | |
| 118 | − device is opened in read/write mode, other open() calls in read/write mode will | |
| 119 | − either fail or block, depending on whether non-blocking or blocking mode was | |
| 120 | − specified. A front-end device opened in blocking mode can later be put into | |
| 121 | − non-blocking mode (and vice versa) using the F_SETFL command of the fcntl | |
| 122 | − system call. This is a standard system call, documented in the Linux manual | |
| 123 | − page for fcntl. When an open() call has succeeded, the device will be ready | |
| 124 | − for use in the specified mode. This implies that the corresponding hardware is | |
| 125 | − powered up, and that other front-ends may have been powered down to make | |
| 126 | − that possible.</para> | |
| 127 | − </refsect1> | |
| 128 | − | |
| 129 | − <refsect1> | |
| 130 | − <title>Return Value</title> | |
| 131 | − | |
| 132 | − <para>On success <function>open</function> returns the new file | |
| 133 | −descriptor. On error -1 is returned, and the <varname>errno</varname> | |
| 134 | −variable is set appropriately. Possible error codes are:</para> | |
| 135 | − | |
| 136 | − <variablelist> | |
| 137 | − <varlistentry> | |
| 138 | − <term><errorcode>EACCES</errorcode></term> | |
| 139 | − <listitem> | |
| 140 | − <para>The caller has no permission to access the | |
| 141 | −device.</para> | |
| 142 | − </listitem> | |
| 143 | − </varlistentry> | |
| 144 | − <varlistentry> | |
| 145 | − <term><errorcode>EBUSY</errorcode></term> | |
| 146 | − <listitem> | |
| 147 | − <para>The the device driver is already in use.</para> | |
| 148 | − </listitem> | |
| 149 | − </varlistentry> | |
| 150 | − <varlistentry> | |
| 151 | − <term><errorcode>ENXIO</errorcode></term> | |
| 152 | − <listitem> | |
| 153 | − <para>No device corresponding to this device special file | |
| 154 | −exists.</para> | |
| 155 | − </listitem> | |
| 156 | − </varlistentry> | |
| 157 | − <varlistentry> | |
| 158 | − <term><errorcode>ENOMEM</errorcode></term> | |
| 159 | − <listitem> | |
| 160 | − <para>Not enough kernel memory was available to complete the | |
| 161 | −request.</para> | |
| 162 | − </listitem> | |
| 163 | − </varlistentry> | |
| 164 | − <varlistentry> | |
| 165 | − <term><errorcode>EMFILE</errorcode></term> | |
| 166 | − <listitem> | |
| 167 | − <para>The process already has the maximum number of | |
| 168 | −files open.</para> | |
| 169 | − </listitem> | |
| 170 | − </varlistentry> | |
| 171 | − <varlistentry> | |
| 172 | − <term><errorcode>ENFILE</errorcode></term> | |
| 173 | − <listitem> | |
| 174 | − <para>The limit on the total number of files open on the | |
| 175 | −system has been reached.</para> | |
| 176 | − </listitem> | |
| 177 | − </varlistentry> | |
| 178 | − <varlistentry> | |
| 179 | − <term><errorcode>ENODEV</errorcode></term> | |
| 180 | − <listitem> | |
| 181 | − <para>The device got removed.</para> | |
| 182 | − </listitem> | |
| 183 | − </varlistentry> | |
| 184 | − </variablelist> | |
| 185 | − </refsect1> | |
| 186 | −</refentry> | |
| 187 | − | |
| 188 | −<refentry id="frontend_f_close"> | |
| 189 | − <refmeta> | |
| 190 | − <refentrytitle>DVB frontend close()</refentrytitle> | |
| 191 | − &manvol; | |
| 192 | − </refmeta> | |
| 193 | − | |
| 194 | − <refnamediv> | |
| 195 | − <refname>fe-close</refname> | |
| 196 | − <refpurpose>Close a frontend device</refpurpose> | |
| 197 | − </refnamediv> | |
| 198 | − | |
| 199 | − <refsynopsisdiv> | |
| 200 | − <funcsynopsis> | |
| 201 | − <funcsynopsisinfo>#include <unistd.h></funcsynopsisinfo> | |
| 202 | − <funcprototype> | |
| 203 | − <funcdef>int <function>close</function></funcdef> | |
| 204 | − <paramdef>int <parameter>fd</parameter></paramdef> | |
| 205 | − </funcprototype> | |
| 206 | − </funcsynopsis> | |
| 207 | − </refsynopsisdiv> | |
| 208 | − | |
| 209 | − <refsect1> | |
| 210 | − <title>Arguments</title> | |
| 211 | − | |
| 212 | − <variablelist> | |
| 213 | − <varlistentry> | |
| 214 | − <term><parameter>fd</parameter></term> | |
| 215 | − <listitem> | |
| 216 | − <para>&fd;</para> | |
| 217 | − </listitem> | |
| 218 | − </varlistentry> | |
| 219 | − </variablelist> | |
| 220 | − </refsect1> | |
| 221 | − | |
| 222 | − <refsect1> | |
| 223 | − <title>Description</title> | |
| 224 | −<para>This system call closes a previously opened front-end device. After closing | |
| 225 | − a front-end device, its corresponding hardware might be powered down | |
| 226 | − automatically.</para> | |
| 227 | −</refsect1> | |
| 228 | − <refsect1> | |
| 229 | − <title>Return Value</title> | |
| 230 | − | |
| 231 | − <para>The function returns <returnvalue>0</returnvalue> on | |
| 232 | −success, <returnvalue>-1</returnvalue> on failure and the | |
| 233 | −<varname>errno</varname> is set appropriately. Possible error | |
| 234 | −codes:</para> | |
| 235 | − | |
| 236 | − <variablelist> | |
| 237 | − <varlistentry> | |
| 238 | − <term><errorcode>EBADF</errorcode></term> | |
| 239 | − <listitem> | |
| 240 | − <para><parameter>fd</parameter> is not a valid open file | |
| 241 | −descriptor.</para> | |
| 242 | − </listitem> | |
| 243 | − </varlistentry> | |
| 244 | − </variablelist> | |
| 245 | − </refsect1> | |
| 246 | −</refentry> | |
| 247 | − | |
| 248 | −&sub-fe-get-info; | |
| 249 | −&sub-fe-read-status; | |
| 250 | −&sub-fe-get-property; | |
| 251 | −&sub-fe-diseqc-reset-overload; | |
| 252 | −&sub-fe-diseqc-send-master-cmd; | |
| 253 | −&sub-fe-diseqc-recv-slave-reply; | |
| 254 | −&sub-fe-diseqc-send-burst; | |
| 255 | −&sub-fe-set-tone; | |
| 256 | −&sub-fe-set-voltage; | |
| 257 | −&sub-fe-enable-high-lnb-voltage; | |
| 258 | −&sub-fe-set-frontend-tune-mode; | |
| 259 | − | |
| 260 | −</section> | |
| 261 | − | |
| 262 | −<section id="frontend_legacy_dvbv3_api"> | |
| 263 | −<title>DVB Frontend legacy API (a. k. a. DVBv3)</title> | |
| 264 | −<para>The usage of this API is deprecated, as it doesn't support all digital | |
| 265 | − TV standards, doesn't provide good statistics measurements and provides | |
| 266 | − incomplete information. This is kept only to support legacy applications.</para> | |
| 267 | − | |
| 268 | −&sub-frontend_legacy_api; | |
| 269 | −</section> | |
| @@ -1,654 +0,0 @@ | ||
| 1 | −<section id="frontend_legacy_types"> | |
| 2 | −<title>Frontend Legacy Data Types</title> | |
| 3 | − | |
| 4 | −<section id="fe-type-t"> | |
| 5 | −<title>Frontend type</title> | |
| 6 | − | |
| 7 | −<para>For historical reasons, frontend types are named by the type of modulation | |
| 8 | − used in transmission. The fontend types are given by fe_type_t type, defined as:</para> | |
| 9 | − | |
| 10 | −<table pgwide="1" frame="none" id="fe-type"> | |
| 11 | −<title>Frontend types</title> | |
| 12 | −<tgroup cols="3"> | |
| 13 | − &cs-def; | |
| 14 | − <thead> | |
| 15 | − <row> | |
| 16 | − <entry>fe_type</entry> | |
| 17 | − <entry>Description</entry> | |
| 18 | − <entry><link linkend="DTV-DELIVERY-SYSTEM">DTV_DELIVERY_SYSTEM</link> equivalent type</entry> | |
| 19 | − </row> | |
| 20 | − </thead> | |
| 21 | − <tbody valign="top"> | |
| 22 | − <row> | |
| 23 | − <entry id="FE-QPSK"><constant>FE_QPSK</constant></entry> | |
| 24 | − <entry>For DVB-S standard</entry> | |
| 25 | − <entry><constant>SYS_DVBS</constant></entry> | |
| 26 | − </row> | |
| 27 | − <row> | |
| 28 | − <entry id="FE-QAM"><constant>FE_QAM</constant></entry> | |
| 29 | − <entry>For DVB-C annex A standard</entry> | |
| 30 | − <entry><constant>SYS_DVBC_ANNEX_A</constant></entry> | |
| 31 | − </row> | |
| 32 | − <row> | |
| 33 | − <entry id="FE-OFDM"><constant>FE_OFDM</constant></entry> | |
| 34 | − <entry>For DVB-T standard</entry> | |
| 35 | − <entry><constant>SYS_DVBT</constant></entry> | |
| 36 | − </row> | |
| 37 | − <row> | |
| 38 | − <entry id="FE-ATSC"><constant>FE_ATSC</constant></entry> | |
| 39 | − <entry>For ATSC standard (terrestrial) or for DVB-C Annex B (cable) used in US.</entry> | |
| 40 | − <entry><constant>SYS_ATSC</constant> (terrestrial) or <constant>SYS_DVBC_ANNEX_B</constant> (cable)</entry> | |
| 41 | − </row> | |
| 42 | −</tbody></tgroup></table> | |
| 43 | − | |
| 44 | −<para>Newer formats like DVB-S2, ISDB-T, ISDB-S and DVB-T2 are not described at the above, as they're | |
| 45 | −supported via the new <link linkend="FE_GET_PROPERTY">FE_GET_PROPERTY/FE_GET_SET_PROPERTY</link> ioctl's, using the <link linkend="DTV-DELIVERY-SYSTEM">DTV_DELIVERY_SYSTEM</link> parameter. | |
| 46 | −</para> | |
| 47 | − | |
| 48 | −<para>In the old days, &dvb-frontend-info; used to contain | |
| 49 | − <constant>fe_type_t</constant> field to indicate the delivery systems, | |
| 50 | − filled with either FE_QPSK, FE_QAM, FE_OFDM or FE_ATSC. While this is | |
| 51 | − still filled to keep backward compatibility, the usage of this | |
| 52 | − field is deprecated, as it can report just one delivery system, but some | |
| 53 | − devices support multiple delivery systems. Please use | |
| 54 | − <link linkend="DTV-ENUM-DELSYS">DTV_ENUM_DELSYS</link> instead. | |
| 55 | −</para> | |
| 56 | −<para>On devices that support multiple delivery systems, | |
| 57 | − &dvb-frontend-info;::<constant>fe_type_t</constant> is filled with the | |
| 58 | − currently standard, as selected by the last call to | |
| 59 | − <link linkend="FE_GET_PROPERTY">FE_SET_PROPERTY</link> | |
| 60 | − using the &DTV-DELIVERY-SYSTEM; property.</para> | |
| 61 | −</section> | |
| 62 | − | |
| 63 | −<section id="fe-bandwidth-t"> | |
| 64 | −<title>Frontend bandwidth</title> | |
| 65 | − | |
| 66 | −<table pgwide="1" frame="none" id="fe-bandwidth"> | |
| 67 | − <title>enum fe_bandwidth</title> | |
| 68 | − <tgroup cols="2"> | |
| 69 | − &cs-def; | |
| 70 | − <thead> | |
| 71 | − <row> | |
| 72 | − <entry>ID</entry> | |
| 73 | − <entry>Description</entry> | |
| 74 | − </row> | |
| 75 | − </thead> | |
| 76 | − <tbody valign="top"> | |
| 77 | − <row> | |
| 78 | − <entry id="BANDWIDTH-AUTO"><constant>BANDWIDTH_AUTO</constant></entry> | |
| 79 | − <entry>Autodetect bandwidth (if supported)</entry> | |
| 80 | − </row><row> | |
| 81 | − <entry id="BANDWIDTH-1-712-MHZ"><constant>BANDWIDTH_1_712_MHZ</constant></entry> | |
| 82 | − <entry>1.712 MHz</entry> | |
| 83 | − </row><row> | |
| 84 | − <entry id="BANDWIDTH-5-MHZ"><constant>BANDWIDTH_5_MHZ</constant></entry> | |
| 85 | − <entry>5 MHz</entry> | |
| 86 | − </row><row> | |
| 87 | − <entry id="BANDWIDTH-6-MHZ"><constant>BANDWIDTH_6_MHZ</constant></entry> | |
| 88 | − <entry>6 MHz</entry> | |
| 89 | − </row><row> | |
| 90 | − <entry id="BANDWIDTH-7-MHZ"><constant>BANDWIDTH_7_MHZ</constant></entry> | |
| 91 | − <entry>7 MHz</entry> | |
| 92 | − </row><row> | |
| 93 | − <entry id="BANDWIDTH-8-MHZ"><constant>BANDWIDTH_8_MHZ</constant></entry> | |
| 94 | − <entry>8 MHz</entry> | |
| 95 | − </row><row> | |
| 96 | − <entry id="BANDWIDTH-10-MHZ"><constant>BANDWIDTH_10_MHZ</constant></entry> | |
| 97 | − <entry>10 MHz</entry> | |
| 98 | − </row> | |
| 99 | − </tbody> | |
| 100 | − </tgroup> | |
| 101 | −</table> | |
| 102 | − | |
| 103 | −</section> | |
| 104 | − | |
| 105 | −<section id="dvb-frontend-parameters"> | |
| 106 | −<title>frontend parameters</title> | |
| 107 | −<para>The kind of parameters passed to the frontend device for tuning depend on | |
| 108 | −the kind of hardware you are using.</para> | |
| 109 | −<para>The struct <constant>dvb_frontend_parameters</constant> uses an | |
| 110 | −union with specific per-system parameters. However, as newer delivery systems | |
| 111 | −required more data, the structure size weren't enough to fit, and just | |
| 112 | −extending its size would break the existing applications. So, those parameters | |
| 113 | −were replaced by the usage of <link linkend="FE_GET_PROPERTY"> | |
| 114 | −<constant>FE_GET_PROPERTY/FE_SET_PROPERTY</constant></link> ioctl's. The | |
| 115 | −new API is flexible enough to add new parameters to existing delivery systems, | |
| 116 | −and to add newer delivery systems.</para> | |
| 117 | −<para>So, newer applications should use <link linkend="FE_GET_PROPERTY"> | |
| 118 | −<constant>FE_GET_PROPERTY/FE_SET_PROPERTY</constant></link> instead, in | |
| 119 | −order to be able to support the newer System Delivery like DVB-S2, DVB-T2, | |
| 120 | −DVB-C2, ISDB, etc.</para> | |
| 121 | −<para>All kinds of parameters are combined as an union in the FrontendParameters structure: | |
| 122 | −<programlisting> | |
| 123 | −struct dvb_frontend_parameters { | |
| 124 | − uint32_t frequency; /⋆ (absolute) frequency in Hz for QAM/OFDM ⋆/ | |
| 125 | − /⋆ intermediate frequency in kHz for QPSK ⋆/ | |
| 126 | − &fe-spectral-inversion-t; inversion; | |
| 127 | − union { | |
| 128 | − struct dvb_qpsk_parameters qpsk; | |
| 129 | − struct dvb_qam_parameters qam; | |
| 130 | − struct dvb_ofdm_parameters ofdm; | |
| 131 | − struct dvb_vsb_parameters vsb; | |
| 132 | − } u; | |
| 133 | −}; | |
| 134 | −</programlisting></para> | |
| 135 | −<para>In the case of QPSK frontends the <constant>frequency</constant> field specifies the intermediate | |
| 136 | −frequency, i.e. the offset which is effectively added to the local oscillator frequency (LOF) of | |
| 137 | −the LNB. The intermediate frequency has to be specified in units of kHz. For QAM and | |
| 138 | −OFDM frontends the <constant>frequency</constant> specifies the absolute frequency and is given in Hz. | |
| 139 | −</para> | |
| 140 | − | |
| 141 | −<section id="dvb-qpsk-parameters"> | |
| 142 | −<title>QPSK parameters</title> | |
| 143 | −<para>For satellite QPSK frontends you have to use the <constant>dvb_qpsk_parameters</constant> structure:</para> | |
| 144 | −<programlisting> | |
| 145 | − struct dvb_qpsk_parameters { | |
| 146 | − uint32_t symbol_rate; /⋆ symbol rate in Symbols per second ⋆/ | |
| 147 | − &fe-code-rate-t; fec_inner; /⋆ forward error correction (see above) ⋆/ | |
| 148 | − }; | |
| 149 | −</programlisting> | |
| 150 | −</section> | |
| 151 | − | |
| 152 | −<section id="dvb-qam-parameters"> | |
| 153 | −<title>QAM parameters</title> | |
| 154 | −<para>for cable QAM frontend you use the <constant>dvb_qam_parameters</constant> structure:</para> | |
| 155 | −<programlisting> | |
| 156 | − struct dvb_qam_parameters { | |
| 157 | − uint32_t symbol_rate; /⋆ symbol rate in Symbols per second ⋆/ | |
| 158 | − &fe-code-rate-t; fec_inner; /⋆ forward error correction (see above) ⋆/ | |
| 159 | − &fe-modulation-t; modulation; /⋆ modulation type (see above) ⋆/ | |
| 160 | − }; | |
| 161 | −</programlisting> | |
| 162 | −</section> | |
| 163 | − | |
| 164 | −<section id="dvb-vsb-parameters"> | |
| 165 | −<title>VSB parameters</title> | |
| 166 | −<para>ATSC frontends are supported by the <constant>dvb_vsb_parameters</constant> structure:</para> | |
| 167 | −<programlisting> | |
| 168 | −struct dvb_vsb_parameters { | |
| 169 | − &fe-modulation-t; modulation; /⋆ modulation type (see above) ⋆/ | |
| 170 | −}; | |
| 171 | −</programlisting> | |
| 172 | −</section> | |
| 173 | − | |
| 174 | −<section id="dvb-ofdm-parameters"> | |
| 175 | −<title>OFDM parameters</title> | |
| 176 | −<para>DVB-T frontends are supported by the <constant>dvb_ofdm_parameters</constant> structure:</para> | |
| 177 | −<programlisting> | |
| 178 | − struct dvb_ofdm_parameters { | |
| 179 | − &fe-bandwidth-t; bandwidth; | |
| 180 | − &fe-code-rate-t; code_rate_HP; /⋆ high priority stream code rate ⋆/ | |
| 181 | − &fe-code-rate-t; code_rate_LP; /⋆ low priority stream code rate ⋆/ | |
| 182 | − &fe-modulation-t; constellation; /⋆ modulation type (see above) ⋆/ | |
| 183 | − &fe-transmit-mode-t; transmission_mode; | |
| 184 | − &fe-guard-interval-t; guard_interval; | |
| 185 | − &fe-hierarchy-t; hierarchy_information; | |
| 186 | − }; | |
| 187 | −</programlisting> | |
| 188 | −</section> | |
| 189 | −</section> | |
| 190 | − | |
| 191 | −<section id="dvb-frontend-event"> | |
| 192 | −<title>frontend events</title> | |
| 193 | − <programlisting> | |
| 194 | − struct dvb_frontend_event { | |
| 195 | − fe_status_t status; | |
| 196 | − struct dvb_frontend_parameters parameters; | |
| 197 | − }; | |
| 198 | −</programlisting> | |
| 199 | − </section> | |
| 200 | −</section> | |
| 201 | − | |
| 202 | −<section id="frontend_legacy_fcalls"> | |
| 203 | −<title>Frontend Legacy Function Calls</title> | |
| 204 | − | |
| 205 | −<para>Those functions are defined at DVB version 3. The support is kept in | |
| 206 | − the kernel due to compatibility issues only. Their usage is strongly | |
| 207 | − not recommended</para> | |
| 208 | − | |
| 209 | −<section id="FE_READ_BER"> | |
| 210 | −<title>FE_READ_BER</title> | |
| 211 | −<para>DESCRIPTION | |
| 212 | −</para> | |
| 213 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 214 | − align="char"> | |
| 215 | −<para>This ioctl call returns the bit error rate for the signal currently | |
| 216 | − received/demodulated by the front-end. For this command, read-only access to | |
| 217 | − the device is sufficient.</para> | |
| 218 | −</entry> | |
| 219 | − </row></tbody></tgroup></informaltable> | |
| 220 | −<para>SYNOPSIS | |
| 221 | −</para> | |
| 222 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 223 | − align="char"> | |
| 224 | −<para>int ioctl(int fd, int request = <link linkend="FE_READ_BER">FE_READ_BER</link>, | |
| 225 | − uint32_t ⋆ber);</para> | |
| 226 | −</entry> | |
| 227 | − </row></tbody></tgroup></informaltable> | |
| 228 | −<para>PARAMETERS | |
| 229 | −</para> | |
| 230 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 231 | − align="char"> | |
| 232 | −<para>int fd</para> | |
| 233 | −</entry><entry | |
| 234 | − align="char"> | |
| 235 | −<para>File descriptor returned by a previous call to open().</para> | |
| 236 | −</entry> | |
| 237 | − </row><row><entry | |
| 238 | − align="char"> | |
| 239 | −<para>int request</para> | |
| 240 | −</entry><entry | |
| 241 | − align="char"> | |
| 242 | −<para>Equals <link linkend="FE_READ_BER">FE_READ_BER</link> for this command.</para> | |
| 243 | −</entry> | |
| 244 | − </row><row><entry | |
| 245 | − align="char"> | |
| 246 | −<para>uint32_t *ber</para> | |
| 247 | −</entry><entry | |
| 248 | − align="char"> | |
| 249 | −<para>The bit error rate is stored into *ber.</para> | |
| 250 | −</entry> | |
| 251 | − </row></tbody></tgroup></informaltable> | |
| 252 | − | |
| 253 | −&return-value-dvb; | |
| 254 | −</section> | |
| 255 | − | |
| 256 | −<section id="FE_READ_SNR"> | |
| 257 | −<title>FE_READ_SNR</title> | |
| 258 | − | |
| 259 | −<para>DESCRIPTION | |
| 260 | −</para> | |
| 261 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 262 | − align="char"> | |
| 263 | −<para>This ioctl call returns the signal-to-noise ratio for the signal currently received | |
| 264 | − by the front-end. For this command, read-only access to the device is sufficient.</para> | |
| 265 | −</entry> | |
| 266 | − </row></tbody></tgroup></informaltable> | |
| 267 | −<para>SYNOPSIS | |
| 268 | −</para> | |
| 269 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 270 | − align="char"> | |
| 271 | −<para>int ioctl(int fd, int request = <link linkend="FE_READ_SNR">FE_READ_SNR</link>, uint16_t | |
| 272 | − ⋆snr);</para> | |
| 273 | −</entry> | |
| 274 | − </row></tbody></tgroup></informaltable> | |
| 275 | −<para>PARAMETERS | |
| 276 | −</para> | |
| 277 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 278 | − align="char"> | |
| 279 | −<para>int fd</para> | |
| 280 | −</entry><entry | |
| 281 | − align="char"> | |
| 282 | −<para>File descriptor returned by a previous call to open().</para> | |
| 283 | −</entry> | |
| 284 | − </row><row><entry | |
| 285 | − align="char"> | |
| 286 | −<para>int request</para> | |
| 287 | −</entry><entry | |
| 288 | − align="char"> | |
| 289 | −<para>Equals <link linkend="FE_READ_SNR">FE_READ_SNR</link> for this command.</para> | |
| 290 | −</entry> | |
| 291 | − </row><row><entry | |
| 292 | − align="char"> | |
| 293 | −<para>uint16_t *snr</para> | |
| 294 | −</entry><entry | |
| 295 | − align="char"> | |
| 296 | −<para>The signal-to-noise ratio is stored into *snr.</para> | |
| 297 | −</entry> | |
| 298 | − </row></tbody></tgroup></informaltable> | |
| 299 | − | |
| 300 | −&return-value-dvb; | |
| 301 | −</section> | |
| 302 | − | |
| 303 | −<section id="FE_READ_SIGNAL_STRENGTH"> | |
| 304 | −<title>FE_READ_SIGNAL_STRENGTH</title> | |
| 305 | −<para>DESCRIPTION | |
| 306 | −</para> | |
| 307 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 308 | − align="char"> | |
| 309 | −<para>This ioctl call returns the signal strength value for the signal currently received | |
| 310 | − by the front-end. For this command, read-only access to the device is sufficient.</para> | |
| 311 | −</entry> | |
| 312 | − </row></tbody></tgroup></informaltable> | |
| 313 | −<para>SYNOPSIS | |
| 314 | −</para> | |
| 315 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 316 | − align="char"> | |
| 317 | −<para>int ioctl( int fd, int request = | |
| 318 | − <link linkend="FE_READ_SIGNAL_STRENGTH">FE_READ_SIGNAL_STRENGTH</link>, uint16_t ⋆strength);</para> | |
| 319 | −</entry> | |
| 320 | − </row></tbody></tgroup></informaltable> | |
| 321 | − | |
| 322 | −<para>PARAMETERS | |
| 323 | −</para> | |
| 324 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 325 | − align="char"> | |
| 326 | −<para>int fd</para> | |
| 327 | −</entry><entry | |
| 328 | − align="char"> | |
| 329 | −<para>File descriptor returned by a previous call to open().</para> | |
| 330 | −</entry> | |
| 331 | − </row><row><entry | |
| 332 | − align="char"> | |
| 333 | −<para>int request</para> | |
| 334 | −</entry><entry | |
| 335 | − align="char"> | |
| 336 | −<para>Equals <link linkend="FE_READ_SIGNAL_STRENGTH">FE_READ_SIGNAL_STRENGTH</link> for this | |
| 337 | − command.</para> | |
| 338 | −</entry> | |
| 339 | − </row><row><entry | |
| 340 | − align="char"> | |
| 341 | −<para>uint16_t *strength</para> | |
| 342 | −</entry><entry | |
| 343 | − align="char"> | |
| 344 | −<para>The signal strength value is stored into *strength.</para> | |
| 345 | −</entry> | |
| 346 | − </row></tbody></tgroup></informaltable> | |
| 347 | − | |
| 348 | −&return-value-dvb; | |
| 349 | −</section> | |
| 350 | − | |
| 351 | −<section id="FE_READ_UNCORRECTED_BLOCKS"> | |
| 352 | −<title>FE_READ_UNCORRECTED_BLOCKS</title> | |
| 353 | −<para>DESCRIPTION | |
| 354 | −</para> | |
| 355 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 356 | − align="char"> | |
| 357 | −<para>This ioctl call returns the number of uncorrected blocks detected by the device | |
| 358 | − driver during its lifetime. For meaningful measurements, the increment in block | |
| 359 | − count during a specific time interval should be calculated. For this command, | |
| 360 | − read-only access to the device is sufficient.</para> | |
| 361 | −</entry> | |
| 362 | − </row><row><entry | |
| 363 | − align="char"> | |
| 364 | −<para>Note that the counter will wrap to zero after its maximum count has been | |
| 365 | − reached.</para> | |
| 366 | −</entry> | |
| 367 | − </row></tbody></tgroup></informaltable> | |
| 368 | −<para>SYNOPSIS | |
| 369 | −</para> | |
| 370 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 371 | − align="char"> | |
| 372 | −<para>int ioctl( int fd, int request = | |
| 373 | − <link linkend="FE_READ_UNCORRECTED_BLOCKS">FE_READ_UNCORRECTED_BLOCKS</link>, uint32_t ⋆ublocks);</para> | |
| 374 | −</entry> | |
| 375 | − </row></tbody></tgroup></informaltable> | |
| 376 | −<para>PARAMETERS | |
| 377 | −</para> | |
| 378 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 379 | − align="char"> | |
| 380 | −<para>int fd</para> | |
| 381 | −</entry><entry | |
| 382 | − align="char"> | |
| 383 | −<para>File descriptor returned by a previous call to open().</para> | |
| 384 | −</entry> | |
| 385 | − </row><row><entry | |
| 386 | − align="char"> | |
| 387 | −<para>int request</para> | |
| 388 | −</entry><entry | |
| 389 | − align="char"> | |
| 390 | −<para>Equals <link linkend="FE_READ_UNCORRECTED_BLOCKS">FE_READ_UNCORRECTED_BLOCKS</link> for this | |
| 391 | − command.</para> | |
| 392 | −</entry> | |
| 393 | − </row><row><entry | |
| 394 | − align="char"> | |
| 395 | −<para>uint32_t *ublocks</para> | |
| 396 | −</entry><entry | |
| 397 | − align="char"> | |
| 398 | −<para>The total number of uncorrected blocks seen by the driver | |
| 399 | − so far.</para> | |
| 400 | −</entry> | |
| 401 | − </row></tbody></tgroup></informaltable> | |
| 402 | − | |
| 403 | −&return-value-dvb; | |
| 404 | −</section> | |
| 405 | − | |
| 406 | −<section id="FE_SET_FRONTEND"> | |
| 407 | −<title>FE_SET_FRONTEND</title> | |
| 408 | −<para>DESCRIPTION | |
| 409 | −</para> | |
| 410 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 411 | − align="char"> | |
| 412 | −<para>This ioctl call starts a tuning operation using specified parameters. The result | |
| 413 | − of this call will be successful if the parameters were valid and the tuning could | |
| 414 | − be initiated. The result of the tuning operation in itself, however, will arrive | |
| 415 | − asynchronously as an event (see documentation for <link linkend="FE_GET_EVENT">FE_GET_EVENT</link> and | |
| 416 | − FrontendEvent.) If a new <link linkend="FE_SET_FRONTEND">FE_SET_FRONTEND</link> operation is initiated before | |
| 417 | − the previous one was completed, the previous operation will be aborted in favor | |
| 418 | − of the new one. This command requires read/write access to the device.</para> | |
| 419 | −</entry> | |
| 420 | − </row></tbody></tgroup></informaltable> | |
| 421 | − | |
| 422 | −<para>SYNOPSIS | |
| 423 | −</para> | |
| 424 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 425 | − align="char"> | |
| 426 | −<para>int ioctl(int fd, int request = <link linkend="FE_SET_FRONTEND">FE_SET_FRONTEND</link>, | |
| 427 | − struct dvb_frontend_parameters ⋆p);</para> | |
| 428 | −</entry> | |
| 429 | − </row></tbody></tgroup></informaltable> | |
| 430 | −<para>PARAMETERS | |
| 431 | −</para> | |
| 432 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 433 | − align="char"> | |
| 434 | −<para>int fd</para> | |
| 435 | −</entry><entry | |
| 436 | − align="char"> | |
| 437 | −<para>File descriptor returned by a previous call to open().</para> | |
| 438 | −</entry> | |
| 439 | − </row><row><entry | |
| 440 | − align="char"> | |
| 441 | −<para>int request</para> | |
| 442 | −</entry><entry | |
| 443 | − align="char"> | |
| 444 | −<para>Equals <link linkend="FE_SET_FRONTEND">FE_SET_FRONTEND</link> for this command.</para> | |
| 445 | −</entry> | |
| 446 | − </row><row><entry | |
| 447 | − align="char"> | |
| 448 | −<para>struct | |
| 449 | − dvb_frontend_parameters | |
| 450 | − *p</para> | |
| 451 | −</entry><entry | |
| 452 | − align="char"> | |
| 453 | −<para>Points to parameters for tuning operation.</para> | |
| 454 | −</entry> | |
| 455 | − </row></tbody></tgroup></informaltable> | |
| 456 | − | |
| 457 | −&return-value-dvb; | |
| 458 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 459 | − align="char"> | |
| 460 | −<para>EINVAL</para> | |
| 461 | −</entry><entry | |
| 462 | − align="char"> | |
| 463 | −<para>Maximum supported symbol rate reached.</para> | |
| 464 | −</entry> | |
| 465 | −</row></tbody></tgroup></informaltable> | |
| 466 | −</section> | |
| 467 | − | |
| 468 | −<section id="FE_GET_FRONTEND"> | |
| 469 | −<title>FE_GET_FRONTEND</title> | |
| 470 | −<para>DESCRIPTION | |
| 471 | −</para> | |
| 472 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 473 | − align="char"> | |
| 474 | −<para>This ioctl call queries the currently effective frontend parameters. For this | |
| 475 | − command, read-only access to the device is sufficient.</para> | |
| 476 | −</entry> | |
| 477 | − </row></tbody></tgroup></informaltable> | |
| 478 | − | |
| 479 | −<para>SYNOPSIS | |
| 480 | −</para> | |
| 481 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 482 | − align="char"> | |
| 483 | −<para>int ioctl(int fd, int request = <link linkend="FE_GET_FRONTEND">FE_GET_FRONTEND</link>, | |
| 484 | − struct dvb_frontend_parameters ⋆p);</para> | |
| 485 | −</entry> | |
| 486 | − </row></tbody></tgroup></informaltable> | |
| 487 | − | |
| 488 | −<para>PARAMETERS | |
| 489 | −</para> | |
| 490 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 491 | − align="char"> | |
| 492 | −<para>int fd</para> | |
| 493 | −</entry><entry | |
| 494 | − align="char"> | |
| 495 | −<para>File descriptor returned by a previous call to open().</para> | |
| 496 | −</entry> | |
| 497 | − </row><row><entry | |
| 498 | − align="char"> | |
| 499 | −<para>int request</para> | |
| 500 | −</entry><entry | |
| 501 | − align="char"> | |
| 502 | −<para>Equals <link linkend="FE_SET_FRONTEND">FE_SET_FRONTEND</link> for this command.</para> | |
| 503 | −</entry> | |
| 504 | − </row><row><entry | |
| 505 | − align="char"> | |
| 506 | −<para>struct | |
| 507 | − dvb_frontend_parameters | |
| 508 | − *p</para> | |
| 509 | −</entry><entry | |
| 510 | − align="char"> | |
| 511 | −<para>Points to parameters for tuning operation.</para> | |
| 512 | −</entry> | |
| 513 | − </row></tbody></tgroup></informaltable> | |
| 514 | − | |
| 515 | −&return-value-dvb; | |
| 516 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 517 | − align="char"> | |
| 518 | −<para>EINVAL</para> | |
| 519 | −</entry><entry | |
| 520 | − align="char"> | |
| 521 | −<para>Maximum supported symbol rate reached.</para> | |
| 522 | −</entry> | |
| 523 | − </row></tbody></tgroup></informaltable> | |
| 524 | − | |
| 525 | −</section> | |
| 526 | − | |
| 527 | −<section id="FE_GET_EVENT"> | |
| 528 | −<title>FE_GET_EVENT</title> | |
| 529 | −<para>DESCRIPTION | |
| 530 | −</para> | |
| 531 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 532 | − align="char"> | |
| 533 | −<para>This ioctl call returns a frontend event if available. If an event is not | |
| 534 | − available, the behavior depends on whether the device is in blocking or | |
| 535 | − non-blocking mode. In the latter case, the call fails immediately with errno | |
| 536 | − set to EWOULDBLOCK. In the former case, the call blocks until an event | |
| 537 | − becomes available.</para> | |
| 538 | −</entry> | |
| 539 | − </row><row><entry | |
| 540 | − align="char"> | |
| 541 | −<para>The standard Linux poll() and/or select() system calls can be used with the | |
| 542 | − device file descriptor to watch for new events. For select(), the file descriptor | |
| 543 | − should be included in the exceptfds argument, and for poll(), POLLPRI should | |
| 544 | − be specified as the wake-up condition. Since the event queue allocated is | |
| 545 | − rather small (room for 8 events), the queue must be serviced regularly to avoid | |
| 546 | − overflow. If an overflow happens, the oldest event is discarded from the queue, | |
| 547 | − and an error (EOVERFLOW) occurs the next time the queue is read. After | |
| 548 | − reporting the error condition in this fashion, subsequent | |
| 549 | − <link linkend="FE_GET_EVENT">FE_GET_EVENT</link> | |
| 550 | − calls will return events from the queue as usual.</para> | |
| 551 | −</entry> | |
| 552 | − </row><row><entry | |
| 553 | − align="char"> | |
| 554 | −<para>For the sake of implementation simplicity, this command requires read/write | |
| 555 | − access to the device.</para> | |
| 556 | −</entry> | |
| 557 | − </row></tbody></tgroup></informaltable> | |
| 558 | − | |
| 559 | −<para>SYNOPSIS | |
| 560 | −</para> | |
| 561 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 562 | − align="char"> | |
| 563 | −<para>int ioctl(int fd, int request = QPSK_GET_EVENT, | |
| 564 | − struct dvb_frontend_event ⋆ev);</para> | |
| 565 | −</entry> | |
| 566 | − </row></tbody></tgroup></informaltable> | |
| 567 | − | |
| 568 | −<para>PARAMETERS | |
| 569 | −</para> | |
| 570 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 571 | − align="char"> | |
| 572 | −<para>int fd</para> | |
| 573 | −</entry><entry | |
| 574 | − align="char"> | |
| 575 | −<para>File descriptor returned by a previous call to open().</para> | |
| 576 | −</entry> | |
| 577 | − </row><row><entry | |
| 578 | − align="char"> | |
| 579 | −<para>int request</para> | |
| 580 | −</entry><entry | |
| 581 | − align="char"> | |
| 582 | −<para>Equals <link linkend="FE_GET_EVENT">FE_GET_EVENT</link> for this command.</para> | |
| 583 | −</entry> | |
| 584 | − </row><row><entry | |
| 585 | − align="char"> | |
| 586 | −<para>struct | |
| 587 | − dvb_frontend_event | |
| 588 | − *ev</para> | |
| 589 | −</entry><entry | |
| 590 | − align="char"> | |
| 591 | −<para>Points to the location where the event,</para> | |
| 592 | −</entry> | |
| 593 | − </row><row><entry | |
| 594 | − align="char"> | |
| 595 | −</entry><entry | |
| 596 | − align="char"> | |
| 597 | −<para>if any, is to be stored.</para> | |
| 598 | −</entry> | |
| 599 | − </row></tbody></tgroup></informaltable> | |
| 600 | − | |
| 601 | −&return-value-dvb; | |
| 602 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 603 | − align="char"> | |
| 604 | −<para>EWOULDBLOCK</para> | |
| 605 | −</entry><entry | |
| 606 | − align="char"> | |
| 607 | −<para>There is no event pending, and the device is in | |
| 608 | − non-blocking mode.</para> | |
| 609 | −</entry> | |
| 610 | − </row><row><entry | |
| 611 | − align="char"> | |
| 612 | −<para>EOVERFLOW</para> | |
| 613 | −</entry><entry | |
| 614 | − align="char"> | |
| 615 | −<para>Overflow in event queue - one or more events were lost.</para> | |
| 616 | −</entry> | |
| 617 | −</row></tbody></tgroup></informaltable> | |
| 618 | −</section> | |
| 619 | − | |
| 620 | −<section id="FE_DISHNETWORK_SEND_LEGACY_CMD"> | |
| 621 | − <title>FE_DISHNETWORK_SEND_LEGACY_CMD</title> | |
| 622 | −<para>DESCRIPTION</para> | |
| 623 | −<informaltable><tgroup cols="1"><tbody><row> | |
| 624 | −<entry align="char"> | |
| 625 | −<para>WARNING: This is a very obscure legacy command, used only at stv0299 driver. Should not be used on newer drivers.</para> | |
| 626 | −<para>It provides a non-standard method for selecting Diseqc voltage on the frontend, for Dish Network legacy switches.</para> | |
| 627 | −<para>As support for this ioctl were added in 2004, this means that such dishes were already legacy in 2004.</para> | |
| 628 | −</entry> | |
| 629 | −</row></tbody></tgroup></informaltable> | |
| 630 | − | |
| 631 | −<para>SYNOPSIS</para> | |
| 632 | −<informaltable><tgroup cols="1"><tbody><row> | |
| 633 | −<entry align="char"> | |
| 634 | −<para>int ioctl(int fd, int request = | |
| 635 | − <link linkend="FE_DISHNETWORK_SEND_LEGACY_CMD">FE_DISHNETWORK_SEND_LEGACY_CMD</link>, unsigned long cmd);</para> | |
| 636 | −</entry> | |
| 637 | −</row></tbody></tgroup></informaltable> | |
| 638 | − | |
| 639 | −<para>PARAMETERS</para> | |
| 640 | −<informaltable><tgroup cols="2"><tbody><row> | |
| 641 | −<entry align="char"> | |
| 642 | − <para>unsigned long cmd</para> | |
| 643 | −</entry> | |
| 644 | −<entry align="char"> | |
| 645 | −<para> | |
| 646 | −sends the specified raw cmd to the dish via DISEqC. | |
| 647 | −</para> | |
| 648 | −</entry> | |
| 649 | − </row></tbody></tgroup></informaltable> | |
| 650 | − | |
| 651 | −&return-value-dvb; | |
| 652 | −</section> | |
| 653 | − | |
| 654 | −</section> | |
| @@ -1,211 +0,0 @@ | ||
| 1 | −<title>Introduction</title> | |
| 2 | − | |
| 3 | −<section id="requisites"> | |
| 4 | −<title>What you need to know</title> | |
| 5 | − | |
| 6 | −<para>The reader of this document is required to have some knowledge in | |
| 7 | −the area of digital video broadcasting (DVB) and should be familiar with | |
| 8 | −part I of the MPEG2 specification ISO/IEC 13818 (aka ITU-T H.222), i.e | |
| 9 | −you should know what a program/transport stream (PS/TS) is and what is | |
| 10 | −meant by a packetized elementary stream (PES) or an I-frame.</para> | |
| 11 | − | |
| 12 | −<para>Various DVB standards documents are available from | |
| 13 | −<ulink url="http://www.dvb.org" /> and/or | |
| 14 | −<ulink url="http://www.etsi.org" />.</para> | |
| 15 | − | |
| 16 | −<para>It is also necessary to know how to access unix/linux devices and | |
| 17 | −how to use ioctl calls. This also includes the knowledge of C or C++. | |
| 18 | −</para> | |
| 19 | −</section> | |
| 20 | − | |
| 21 | −<section id="history"> | |
| 22 | −<title>History</title> | |
| 23 | − | |
| 24 | −<para>The first API for DVB cards we used at Convergence in late 1999 | |
| 25 | −was an extension of the Video4Linux API which was primarily developed | |
| 26 | −for frame grabber cards. As such it was not really well suited to be | |
| 27 | −used for DVB cards and their new features like recording MPEG streams | |
| 28 | −and filtering several section and PES data streams at the same time. | |
| 29 | −</para> | |
| 30 | − | |
| 31 | −<para>In early 2000, we were approached by Nokia with a proposal for a | |
| 32 | −new standard Linux DVB API. As a commitment to the development of | |
| 33 | −terminals based on open standards, Nokia and Convergence made it | |
| 34 | −available to all Linux developers and published it on | |
| 35 | −<ulink url="https://linuxtv.org" /> in September 2000. | |
| 36 | −Convergence is the maintainer of the Linux DVB API. Together with the | |
| 37 | −LinuxTV community (i.e. you, the reader of this document), the Linux DVB | |
| 38 | −API will be constantly reviewed and improved. With the Linux driver for | |
| 39 | −the Siemens/Hauppauge DVB PCI card Convergence provides a first | |
| 40 | −implementation of the Linux DVB API.</para> | |
| 41 | −</section> | |
| 42 | − | |
| 43 | −<section id="overview"> | |
| 44 | −<title>Overview</title> | |
| 45 | − | |
| 46 | −<figure id="stb_components"> | |
| 47 | −<title>Components of a DVB card/STB</title> | |
| 48 | −<mediaobject> | |
| 49 | −<imageobject> | |
| 50 | −<imagedata fileref="dvbstb.pdf" format="PS" /> | |
| 51 | −</imageobject> | |
| 52 | −<imageobject> | |
| 53 | −<imagedata fileref="dvbstb.png" format="PNG" /> | |
| 54 | −</imageobject> | |
| 55 | −</mediaobject> | |
| 56 | −</figure> | |
| 57 | − | |
| 58 | −<para>A DVB PCI card or DVB set-top-box (STB) usually consists of the | |
| 59 | −following main hardware components: </para> | |
| 60 | − | |
| 61 | −<itemizedlist> | |
| 62 | − <listitem> | |
| 63 | − | |
| 64 | −<para>Frontend consisting of tuner and DVB demodulator</para> | |
| 65 | − | |
| 66 | −<para>Here the raw signal reaches the DVB hardware from a satellite dish | |
| 67 | −or antenna or directly from cable. The frontend down-converts and | |
| 68 | −demodulates this signal into an MPEG transport stream (TS). In case of a | |
| 69 | −satellite frontend, this includes a facility for satellite equipment | |
| 70 | −control (SEC), which allows control of LNB polarization, multi feed | |
| 71 | −switches or dish rotors.</para> | |
| 72 | − | |
| 73 | −</listitem> | |
| 74 | − <listitem> | |
| 75 | − | |
| 76 | −<para>Conditional Access (CA) hardware like CI adapters and smartcard slots | |
| 77 | −</para> | |
| 78 | − | |
| 79 | −<para>The complete TS is passed through the CA hardware. Programs to | |
| 80 | −which the user has access (controlled by the smart card) are decoded in | |
| 81 | −real time and re-inserted into the TS.</para> | |
| 82 | − | |
| 83 | −</listitem> | |
| 84 | − <listitem> | |
| 85 | − <para>Demultiplexer which filters the incoming DVB stream</para> | |
| 86 | − | |
| 87 | −<para>The demultiplexer splits the TS into its components like audio and | |
| 88 | −video streams. Besides usually several of such audio and video streams | |
| 89 | −it also contains data streams with information about the programs | |
| 90 | −offered in this or other streams of the same provider.</para> | |
| 91 | − | |
| 92 | −</listitem> | |
| 93 | −<listitem> | |
| 94 | − | |
| 95 | −<para>MPEG2 audio and video decoder</para> | |
| 96 | − | |
| 97 | −<para>The main targets of the demultiplexer are the MPEG2 audio and | |
| 98 | −video decoders. After decoding they pass on the uncompressed audio and | |
| 99 | −video to the computer screen or (through a PAL/NTSC encoder) to a TV | |
| 100 | −set.</para> | |
| 101 | − | |
| 102 | − | |
| 103 | −</listitem> | |
| 104 | −</itemizedlist> | |
| 105 | − | |
| 106 | −<para><xref linkend="stb_components" /> shows a crude schematic of the control and data flow | |
| 107 | −between those components.</para> | |
| 108 | − | |
| 109 | −<para>On a DVB PCI card not all of these have to be present since some | |
| 110 | −functionality can be provided by the main CPU of the PC (e.g. MPEG | |
| 111 | −picture and sound decoding) or is not needed (e.g. for data-only uses | |
| 112 | −like “internet over satellite”). Also not every card or STB | |
| 113 | −provides conditional access hardware.</para> | |
| 114 | − | |
| 115 | −</section> | |
| 116 | − | |
| 117 | −<section id="dvb_devices"> | |
| 118 | −<title>Linux DVB Devices</title> | |
| 119 | − | |
| 120 | −<para>The Linux DVB API lets you control these hardware components | |
| 121 | −through currently six Unix-style character devices for video, audio, | |
| 122 | −frontend, demux, CA and IP-over-DVB networking. The video and audio | |
| 123 | −devices control the MPEG2 decoder hardware, the frontend device the | |
| 124 | −tuner and the DVB demodulator. The demux device gives you control over | |
| 125 | −the PES and section filters of the hardware. If the hardware does not | |
| 126 | −support filtering these filters can be implemented in software. Finally, | |
| 127 | −the CA device controls all the conditional access capabilities of the | |
| 128 | −hardware. It can depend on the individual security requirements of the | |
| 129 | −platform, if and how many of the CA functions are made available to the | |
| 130 | −application through this device.</para> | |
| 131 | − | |
| 132 | −<para>All devices can be found in the <constant>/dev</constant> | |
| 133 | −tree under <constant>/dev/dvb</constant>. The individual devices | |
| 134 | −are called:</para> | |
| 135 | − | |
| 136 | −<itemizedlist> | |
| 137 | −<listitem> | |
| 138 | − | |
| 139 | −<para><constant>/dev/dvb/adapterN/audioM</constant>,</para> | |
| 140 | −</listitem> | |
| 141 | −<listitem> | |
| 142 | −<para><constant>/dev/dvb/adapterN/videoM</constant>,</para> | |
| 143 | −</listitem> | |
| 144 | −<listitem> | |
| 145 | −<para><constant>/dev/dvb/adapterN/frontendM</constant>,</para> | |
| 146 | −</listitem> | |
| 147 | − <listitem> | |
| 148 | − | |
| 149 | −<para><constant>/dev/dvb/adapterN/netM</constant>,</para> | |
| 150 | −</listitem> | |
| 151 | − <listitem> | |
| 152 | − | |
| 153 | −<para><constant>/dev/dvb/adapterN/demuxM</constant>,</para> | |
| 154 | −</listitem> | |
| 155 | − <listitem> | |
| 156 | − | |
| 157 | −<para><constant>/dev/dvb/adapterN/dvrM</constant>,</para> | |
| 158 | −</listitem> | |
| 159 | − <listitem> | |
| 160 | − | |
| 161 | −<para><constant>/dev/dvb/adapterN/caM</constant>,</para></listitem></itemizedlist> | |
| 162 | − | |
| 163 | −<para>where N enumerates the DVB PCI cards in a system starting | |
| 164 | −from 0, and M enumerates the devices of each type within each | |
| 165 | −adapter, starting from 0, too. We will omit the “ | |
| 166 | −<constant>/dev/dvb/adapterN/</constant>” in the further discussion | |
| 167 | −of these devices.</para> | |
| 168 | − | |
| 169 | −<para>More details about the data structures and function calls of all | |
| 170 | −the devices are described in the following chapters.</para> | |
| 171 | − | |
| 172 | −</section> | |
| 173 | − | |
| 174 | −<section id="include_files"> | |
| 175 | −<title>API include files</title> | |
| 176 | − | |
| 177 | −<para>For each of the DVB devices a corresponding include file exists. | |
| 178 | −The DVB API include files should be included in application sources with | |
| 179 | −a partial path like:</para> | |
| 180 | − | |
| 181 | −<programlisting> | |
| 182 | − #include <linux/dvb/audio.h> | |
| 183 | −</programlisting> | |
| 184 | −<programlisting> | |
| 185 | − #include <linux/dvb/ca.h> | |
| 186 | −</programlisting> | |
| 187 | −<programlisting> | |
| 188 | − #include <linux/dvb/dmx.h> | |
| 189 | −</programlisting> | |
| 190 | −<programlisting> | |
| 191 | − #include <linux/dvb/frontend.h> | |
| 192 | −</programlisting> | |
| 193 | −<programlisting> | |
| 194 | − #include <linux/dvb/net.h> | |
| 195 | −</programlisting> | |
| 196 | −<programlisting> | |
| 197 | − #include <linux/dvb/osd.h> | |
| 198 | −</programlisting> | |
| 199 | −<programlisting> | |
| 200 | − #include <linux/dvb/video.h> | |
| 201 | −</programlisting> | |
| 202 | − | |
| 203 | −<para>To enable applications to support different API version, an | |
| 204 | −additional include file | |
| 205 | −<constant>linux/dvb/version.h</constant> exists, which defines the | |
| 206 | −constant <constant>DVB_API_VERSION</constant>. This document | |
| 207 | −describes <constant>DVB_API_VERSION 5.10</constant>. | |
| 208 | −</para> | |
| 209 | − | |
| 210 | −</section> | |
| 211 | − | |
| @@ -1,238 +0,0 @@ | ||
| 1 | −<title>DVB Network API</title> | |
| 2 | −<para>The DVB net device controls the mapping of data packages that are | |
| 3 | − part of a transport stream to be mapped into a virtual network interface, | |
| 4 | − visible through the standard Linux network protocol stack.</para> | |
| 5 | −<para>Currently, two encapsulations are supported:</para> | |
| 6 | −<itemizedlist> | |
| 7 | − <listitem><para><ulink url="http://en.wikipedia.org/wiki/Multiprotocol_Encapsulation"> | |
| 8 | − Multi Protocol Encapsulation (MPE)</ulink></para></listitem> | |
| 9 | − <listitem><para><ulink url="http://en.wikipedia.org/wiki/Unidirectional_Lightweight_Encapsulation"> | |
| 10 | − Ultra Lightweight Encapsulation (ULE)</ulink></para></listitem> | |
| 11 | −</itemizedlist> | |
| 12 | − | |
| 13 | −<para>In order to create the Linux virtual network interfaces, an application | |
| 14 | − needs to tell to the Kernel what are the PIDs and the encapsulation types | |
| 15 | − that are present on the transport stream. This is done through | |
| 16 | − <constant>/dev/dvb/adapter?/net?</constant> device node. | |
| 17 | − The data will be available via virtual <constant>dvb?_?</constant> | |
| 18 | − network interfaces, and will be controlled/routed via the standard | |
| 19 | − ip tools (like ip, route, netstat, ifconfig, etc).</para> | |
| 20 | −<para> Data types and and ioctl definitions are defined via | |
| 21 | − <constant>linux/dvb/net.h</constant> header.</para> | |
| 22 | − | |
| 23 | −<section id="net_fcalls"> | |
| 24 | −<title>DVB net Function Calls</title> | |
| 25 | − | |
| 26 | − | |
| 27 | −<refentry id="NET_ADD_IF"> | |
| 28 | − <refmeta> | |
| 29 | − <refentrytitle>ioctl NET_ADD_IF</refentrytitle> | |
| 30 | − &manvol; | |
| 31 | − </refmeta> | |
| 32 | − | |
| 33 | − <refnamediv> | |
| 34 | − <refname>NET_ADD_IF</refname> | |
| 35 | − <refpurpose>Creates a new network interface for a given Packet ID.</refpurpose> | |
| 36 | − </refnamediv> | |
| 37 | − | |
| 38 | − <refsynopsisdiv> | |
| 39 | − <funcsynopsis> | |
| 40 | − <funcprototype> | |
| 41 | − <funcdef>int <function>ioctl</function></funcdef> | |
| 42 | − <paramdef>int <parameter>fd</parameter></paramdef> | |
| 43 | − <paramdef>int <parameter>request</parameter></paramdef> | |
| 44 | − <paramdef>struct dvb_net_if *<parameter>net_if</parameter></paramdef> | |
| 45 | − </funcprototype> | |
| 46 | − </funcsynopsis> | |
| 47 | − </refsynopsisdiv> | |
| 48 | − | |
| 49 | − <refsect1> | |
| 50 | − <title>Arguments</title> | |
| 51 | − <variablelist> | |
| 52 | − <varlistentry> | |
| 53 | − <term><parameter>fd</parameter></term> | |
| 54 | − <listitem> | |
| 55 | − <para>&fe_fd;</para> | |
| 56 | − </listitem> | |
| 57 | − </varlistentry> | |
| 58 | − <varlistentry> | |
| 59 | − <term><parameter>request</parameter></term> | |
| 60 | − <listitem> | |
| 61 | − <para>FE_SET_TONE</para> | |
| 62 | − </listitem> | |
| 63 | − </varlistentry> | |
| 64 | − <varlistentry> | |
| 65 | − <term><parameter>net_if</parameter></term> | |
| 66 | − <listitem> | |
| 67 | − <para>pointer to &dvb-net-if;</para> | |
| 68 | − </listitem> | |
| 69 | − </varlistentry> | |
| 70 | − </variablelist> | |
| 71 | − </refsect1> | |
| 72 | − | |
| 73 | − <refsect1> | |
| 74 | − <title>Description</title> | |
| 75 | − | |
| 76 | −<para>The NET_ADD_IF ioctl system call selects the Packet ID (PID) that | |
| 77 | − contains a TCP/IP traffic, the type of encapsulation to be used (MPE or ULE) | |
| 78 | − and the interface number for the new interface to be created. When the | |
| 79 | − system call successfully returns, a new virtual network interface is created.</para> | |
| 80 | −<para>The &dvb-net-if;::ifnum field will be filled with the number of the | |
| 81 | − created interface.</para> | |
| 82 | − | |
| 83 | −&return-value-dvb; | |
| 84 | −</refsect1> | |
| 85 | − | |
| 86 | −<refsect1 id="dvb-net-if-t"> | |
| 87 | −<title>struct <structname>dvb_net_if</structname> description</title> | |
| 88 | − | |
| 89 | −<table pgwide="1" frame="none" id="dvb-net-if"> | |
| 90 | − <title>struct <structname>dvb_net_if</structname></title> | |
| 91 | − <tgroup cols="2"> | |
| 92 | − &cs-def; | |
| 93 | − <thead> | |
| 94 | − <row> | |
| 95 | − <entry>ID</entry> | |
| 96 | − <entry>Description</entry> | |
| 97 | − </row> | |
| 98 | − </thead> | |
| 99 | − <tbody valign="top"> | |
| 100 | − <row> | |
| 101 | − <entry align="char">pid</entry> | |
| 102 | − <entry align="char">Packet ID (PID) of the MPEG-TS that contains | |
| 103 | − data</entry> | |
| 104 | − </row><row> | |
| 105 | − <entry align="char">ifnum</entry> | |
| 106 | − <entry align="char">number of the DVB interface.</entry> | |
| 107 | − </row><row> | |
| 108 | − <entry align="char">feedtype</entry> | |
| 109 | − <entry align="char">Encapsulation type of the feed. It can be: | |
| 110 | − <constant>DVB_NET_FEEDTYPE_MPE</constant> for MPE encoding | |
| 111 | − or | |
| 112 | − <constant>DVB_NET_FEEDTYPE_ULE</constant> for ULE encoding. | |
| 113 | − </entry> | |
| 114 | − </row> | |
| 115 | − </tbody> | |
| 116 | − </tgroup> | |
| 117 | −</table> | |
| 118 | −</refsect1> | |
| 119 | −</refentry> | |
| 120 | − | |
| 121 | −<refentry id="NET_REMOVE_IF"> | |
| 122 | − <refmeta> | |
| 123 | − <refentrytitle>ioctl NET_REMOVE_IF</refentrytitle> | |
| 124 | − &manvol; | |
| 125 | − </refmeta> | |
| 126 | − | |
| 127 | − <refnamediv> | |
| 128 | − <refname>NET_REMOVE_IF</refname> | |
| 129 | − <refpurpose>Removes a network interface.</refpurpose> | |
| 130 | − </refnamediv> | |
| 131 | − | |
| 132 | − <refsynopsisdiv> | |
| 133 | − <funcsynopsis> | |
| 134 | − <funcprototype> | |
| 135 | − <funcdef>int <function>ioctl</function></funcdef> | |
| 136 | − <paramdef>int <parameter>fd</parameter></paramdef> | |
| 137 | − <paramdef>int <parameter>request</parameter></paramdef> | |
| 138 | − <paramdef>int <parameter>ifnum</parameter></paramdef> | |
| 139 | − </funcprototype> | |
| 140 | − </funcsynopsis> | |
| 141 | − </refsynopsisdiv> | |
| 142 | − | |
| 143 | − <refsect1> | |
| 144 | − <title>Arguments</title> | |
| 145 | − <variablelist> | |
| 146 | − <varlistentry> | |
| 147 | − <term><parameter>fd</parameter></term> | |
| 148 | − <listitem> | |
| 149 | − <para>&fe_fd;</para> | |
| 150 | − </listitem> | |
| 151 | − </varlistentry> | |
| 152 | − <varlistentry> | |
| 153 | − <term><parameter>request</parameter></term> | |
| 154 | − <listitem> | |
| 155 | − <para>FE_SET_TONE</para> | |
| 156 | − </listitem> | |
| 157 | − </varlistentry> | |
| 158 | − <varlistentry> | |
| 159 | − <term><parameter>net_if</parameter></term> | |
| 160 | − <listitem> | |
| 161 | − <para>number of the interface to be removed</para> | |
| 162 | − </listitem> | |
| 163 | − </varlistentry> | |
| 164 | − </variablelist> | |
| 165 | − </refsect1> | |
| 166 | − | |
| 167 | − <refsect1> | |
| 168 | − <title>Description</title> | |
| 169 | − | |
| 170 | −<para>The NET_REMOVE_IF ioctl deletes an interface previously created | |
| 171 | − via &NET-ADD-IF;.</para> | |
| 172 | − | |
| 173 | −&return-value-dvb; | |
| 174 | −</refsect1> | |
| 175 | −</refentry> | |
| 176 | − | |
| 177 | − | |
| 178 | −<refentry id="NET_GET_IF"> | |
| 179 | − <refmeta> | |
| 180 | − <refentrytitle>ioctl NET_GET_IF</refentrytitle> | |
| 181 | − &manvol; | |
| 182 | − </refmeta> | |
| 183 | − | |
| 184 | − <refnamediv> | |
| 185 | − <refname>NET_GET_IF</refname> | |
| 186 | − <refpurpose>Read the configuration data of an interface created via | |
| 187 | − &NET-ADD-IF;.</refpurpose> | |
| 188 | − </refnamediv> | |
| 189 | − | |
| 190 | − <refsynopsisdiv> | |
| 191 | − <funcsynopsis> | |
| 192 | − <funcprototype> | |
| 193 | − <funcdef>int <function>ioctl</function></funcdef> | |
| 194 | − <paramdef>int <parameter>fd</parameter></paramdef> | |
| 195 | − <paramdef>int <parameter>request</parameter></paramdef> | |
| 196 | − <paramdef>struct dvb_net_if *<parameter>net_if</parameter></paramdef> | |
| 197 | − </funcprototype> | |
| 198 | − </funcsynopsis> | |
| 199 | − </refsynopsisdiv> | |
| 200 | − | |
| 201 | − <refsect1> | |
| 202 | − <title>Arguments</title> | |
| 203 | − <variablelist> | |
| 204 | − <varlistentry> | |
| 205 | − <term><parameter>fd</parameter></term> | |
| 206 | − <listitem> | |
| 207 | − <para>&fe_fd;</para> | |
| 208 | − </listitem> | |
| 209 | − </varlistentry> | |
| 210 | − <varlistentry> | |
| 211 | − <term><parameter>request</parameter></term> | |
| 212 | − <listitem> | |
| 213 | − <para>FE_SET_TONE</para> | |
| 214 | − </listitem> | |
| 215 | − </varlistentry> | |
| 216 | − <varlistentry> | |
| 217 | − <term><parameter>net_if</parameter></term> | |
| 218 | − <listitem> | |
| 219 | − <para>pointer to &dvb-net-if;</para> | |
| 220 | − </listitem> | |
| 221 | − </varlistentry> | |
| 222 | − </variablelist> | |
| 223 | − </refsect1> | |
| 224 | − | |
| 225 | − <refsect1> | |
| 226 | − <title>Description</title> | |
| 227 | − | |
| 228 | −<para>The NET_GET_IF ioctl uses the interface number given by the | |
| 229 | − &dvb-net-if;::ifnum field and fills the content of &dvb-net-if; with | |
| 230 | − the packet ID and encapsulation type used on such interface. If the | |
| 231 | − interface was not created yet with &NET-ADD-IF;, it will return -1 and | |
| 232 | − fill the <constant>errno</constant> with <constant>EINVAL</constant> | |
| 233 | − error code.</para> | |
| 234 | − | |
| 235 | −&return-value-dvb; | |
| 236 | −</refsect1> | |
| 237 | −</refentry> | |
| 238 | −</section> | |
| @@ -1,1968 +0,0 @@ | ||
| 1 | −<title>DVB Video Device</title> | |
| 2 | −<para>The DVB video device controls the MPEG2 video decoder of the DVB hardware. It | |
| 3 | −can be accessed through <emphasis role="bold">/dev/dvb/adapter0/video0</emphasis>. Data types and and | |
| 4 | −ioctl definitions can be accessed by including <emphasis role="bold">linux/dvb/video.h</emphasis> in your | |
| 5 | −application. | |
| 6 | −</para> | |
| 7 | −<para>Note that the DVB video device only controls decoding of the MPEG video stream, not | |
| 8 | −its presentation on the TV or computer screen. On PCs this is typically handled by an | |
| 9 | −associated video4linux device, e.g. <emphasis role="bold">/dev/video</emphasis>, which allows scaling and defining output | |
| 10 | −windows. | |
| 11 | −</para> | |
| 12 | −<para>Some DVB cards don’t have their own MPEG decoder, which results in the omission of | |
| 13 | −the audio and video device as well as the video4linux device. | |
| 14 | −</para> | |
| 15 | −<para>The ioctls that deal with SPUs (sub picture units) and navigation packets are only | |
| 16 | −supported on some MPEG decoders made for DVD playback. | |
| 17 | −</para> | |
| 18 | −<para> | |
| 19 | −These ioctls were also used by V4L2 to control MPEG decoders implemented in V4L2. The use | |
| 20 | −of these ioctls for that purpose has been made obsolete and proper V4L2 ioctls or controls | |
| 21 | −have been created to replace that functionality.</para> | |
| 22 | −<section id="video_types"> | |
| 23 | −<title>Video Data Types</title> | |
| 24 | − | |
| 25 | −<section id="video-format-t"> | |
| 26 | −<title>video_format_t</title> | |
| 27 | −<para>The <constant>video_format_t</constant> data type defined by | |
| 28 | −</para> | |
| 29 | −<programlisting> | |
| 30 | −typedef enum { | |
| 31 | − VIDEO_FORMAT_4_3, /⋆ Select 4:3 format ⋆/ | |
| 32 | − VIDEO_FORMAT_16_9, /⋆ Select 16:9 format. ⋆/ | |
| 33 | − VIDEO_FORMAT_221_1 /⋆ 2.21:1 ⋆/ | |
| 34 | −} video_format_t; | |
| 35 | −</programlisting> | |
| 36 | −<para>is used in the VIDEO_SET_FORMAT function (??) to tell the driver which aspect ratio | |
| 37 | −the output hardware (e.g. TV) has. It is also used in the data structures video_status | |
| 38 | −(??) returned by VIDEO_GET_STATUS (??) and video_event (??) returned by | |
| 39 | −VIDEO_GET_EVENT (??) which report about the display format of the current video | |
| 40 | −stream. | |
| 41 | −</para> | |
| 42 | −</section> | |
| 43 | − | |
| 44 | −<section id="video-displayformat-t"> | |
| 45 | −<title>video_displayformat_t</title> | |
| 46 | −<para>In case the display format of the video stream and of the display hardware differ the | |
| 47 | −application has to specify how to handle the cropping of the picture. This can be done using | |
| 48 | −the VIDEO_SET_DISPLAY_FORMAT call (??) which accepts | |
| 49 | −</para> | |
| 50 | −<programlisting> | |
| 51 | −typedef enum { | |
| 52 | − VIDEO_PAN_SCAN, /⋆ use pan and scan format ⋆/ | |
| 53 | − VIDEO_LETTER_BOX, /⋆ use letterbox format ⋆/ | |
| 54 | − VIDEO_CENTER_CUT_OUT /⋆ use center cut out format ⋆/ | |
| 55 | −} video_displayformat_t; | |
| 56 | −</programlisting> | |
| 57 | −<para>as argument. | |
| 58 | −</para> | |
| 59 | −</section> | |
| 60 | − | |
| 61 | −<section id="video-stream-source-t"> | |
| 62 | −<title>video_stream_source_t</title> | |
| 63 | −<para>The video stream source is set through the VIDEO_SELECT_SOURCE call and can take | |
| 64 | −the following values, depending on whether we are replaying from an internal (demuxer) or | |
| 65 | −external (user write) source. | |
| 66 | −</para> | |
| 67 | −<programlisting> | |
| 68 | −typedef enum { | |
| 69 | − VIDEO_SOURCE_DEMUX, /⋆ Select the demux as the main source ⋆/ | |
| 70 | − VIDEO_SOURCE_MEMORY /⋆ If this source is selected, the stream | |
| 71 | − comes from the user through the write | |
| 72 | − system call ⋆/ | |
| 73 | −} video_stream_source_t; | |
| 74 | −</programlisting> | |
| 75 | −<para>VIDEO_SOURCE_DEMUX selects the demultiplexer (fed either by the frontend or the | |
| 76 | −DVR device) as the source of the video stream. If VIDEO_SOURCE_MEMORY | |
| 77 | −is selected the stream comes from the application through the <emphasis role="bold">write()</emphasis> system | |
| 78 | −call. | |
| 79 | −</para> | |
| 80 | −</section> | |
| 81 | − | |
| 82 | −<section id="video-play-state-t"> | |
| 83 | −<title>video_play_state_t</title> | |
| 84 | −<para>The following values can be returned by the VIDEO_GET_STATUS call representing the | |
| 85 | −state of video playback. | |
| 86 | −</para> | |
| 87 | −<programlisting> | |
| 88 | −typedef enum { | |
| 89 | − VIDEO_STOPPED, /⋆ Video is stopped ⋆/ | |
| 90 | − VIDEO_PLAYING, /⋆ Video is currently playing ⋆/ | |
| 91 | − VIDEO_FREEZED /⋆ Video is freezed ⋆/ | |
| 92 | −} video_play_state_t; | |
| 93 | −</programlisting> | |
| 94 | −</section> | |
| 95 | − | |
| 96 | −<section id="video-command"> | |
| 97 | −<title>struct video_command</title> | |
| 98 | −<para>The structure must be zeroed before use by the application | |
| 99 | −This ensures it can be extended safely in the future.</para> | |
| 100 | −<programlisting> | |
| 101 | −struct video_command { | |
| 102 | − __u32 cmd; | |
| 103 | − __u32 flags; | |
| 104 | − union { | |
| 105 | − struct { | |
| 106 | − __u64 pts; | |
| 107 | − } stop; | |
| 108 | − | |
| 109 | − struct { | |
| 110 | − /⋆ 0 or 1000 specifies normal speed, | |
| 111 | − 1 specifies forward single stepping, | |
| 112 | − -1 specifies backward single stepping, | |
| 113 | − >>1: playback at speed/1000 of the normal speed, | |
| 114 | − <-1: reverse playback at (-speed/1000) of the normal speed. ⋆/ | |
| 115 | − __s32 speed; | |
| 116 | − __u32 format; | |
| 117 | − } play; | |
| 118 | − | |
| 119 | − struct { | |
| 120 | − __u32 data[16]; | |
| 121 | − } raw; | |
| 122 | − }; | |
| 123 | −}; | |
| 124 | −</programlisting> | |
| 125 | −</section> | |
| 126 | − | |
| 127 | −<section id="video-size-t"> | |
| 128 | −<title>video_size_t</title> | |
| 129 | −<programlisting> | |
| 130 | −typedef struct { | |
| 131 | − int w; | |
| 132 | − int h; | |
| 133 | − video_format_t aspect_ratio; | |
| 134 | −} video_size_t; | |
| 135 | −</programlisting> | |
| 136 | −</section> | |
| 137 | − | |
| 138 | − | |
| 139 | −<section id="video-event"> | |
| 140 | −<title>struct video_event</title> | |
| 141 | −<para>The following is the structure of a video event as it is returned by the VIDEO_GET_EVENT | |
| 142 | −call. | |
| 143 | −</para> | |
| 144 | −<programlisting> | |
| 145 | −struct video_event { | |
| 146 | − __s32 type; | |
| 147 | −#define VIDEO_EVENT_SIZE_CHANGED 1 | |
| 148 | −#define VIDEO_EVENT_FRAME_RATE_CHANGED 2 | |
| 149 | −#define VIDEO_EVENT_DECODER_STOPPED 3 | |
| 150 | −#define VIDEO_EVENT_VSYNC 4 | |
| 151 | − __kernel_time_t timestamp; | |
| 152 | − union { | |
| 153 | − video_size_t size; | |
| 154 | − unsigned int frame_rate; /⋆ in frames per 1000sec ⋆/ | |
| 155 | − unsigned char vsync_field; /⋆ unknown/odd/even/progressive ⋆/ | |
| 156 | − } u; | |
| 157 | −}; | |
| 158 | −</programlisting> | |
| 159 | −</section> | |
| 160 | − | |
| 161 | −<section id="video-status"> | |
| 162 | −<title>struct video_status</title> | |
| 163 | −<para>The VIDEO_GET_STATUS call returns the following structure informing about various | |
| 164 | −states of the playback operation. | |
| 165 | −</para> | |
| 166 | −<programlisting> | |
| 167 | −struct video_status { | |
| 168 | − int video_blank; /⋆ blank video on freeze? ⋆/ | |
| 169 | − video_play_state_t play_state; /⋆ current state of playback ⋆/ | |
| 170 | − video_stream_source_t stream_source; /⋆ current source (demux/memory) ⋆/ | |
| 171 | − video_format_t video_format; /⋆ current aspect ratio of stream ⋆/ | |
| 172 | − video_displayformat_t display_format;/⋆ selected cropping mode ⋆/ | |
| 173 | −}; | |
| 174 | −</programlisting> | |
| 175 | −<para>If video_blank is set video will be blanked out if the channel is changed or if playback is | |
| 176 | −stopped. Otherwise, the last picture will be displayed. play_state indicates if the video is | |
| 177 | −currently frozen, stopped, or being played back. The stream_source corresponds to the seleted | |
| 178 | −source for the video stream. It can come either from the demultiplexer or from memory. | |
| 179 | −The video_format indicates the aspect ratio (one of 4:3 or 16:9) of the currently | |
| 180 | −played video stream. Finally, display_format corresponds to the selected cropping | |
| 181 | −mode in case the source video format is not the same as the format of the output | |
| 182 | −device. | |
| 183 | −</para> | |
| 184 | −</section> | |
| 185 | − | |
| 186 | −<section id="video-still-picture"> | |
| 187 | −<title>struct video_still_picture</title> | |
| 188 | −<para>An I-frame displayed via the VIDEO_STILLPICTURE call is passed on within the | |
| 189 | −following structure. | |
| 190 | −</para> | |
| 191 | −<programlisting> | |
| 192 | −/⋆ pointer to and size of a single iframe in memory ⋆/ | |
| 193 | −struct video_still_picture { | |
| 194 | − char ⋆iFrame; /⋆ pointer to a single iframe in memory ⋆/ | |
| 195 | − int32_t size; | |
| 196 | −}; | |
| 197 | −</programlisting> | |
| 198 | −</section> | |
| 199 | − | |
| 200 | −<section id="video_caps"> | |
| 201 | −<title>video capabilities</title> | |
| 202 | −<para>A call to VIDEO_GET_CAPABILITIES returns an unsigned integer with the following | |
| 203 | −bits set according to the hardwares capabilities. | |
| 204 | −</para> | |
| 205 | −<programlisting> | |
| 206 | − /⋆ bit definitions for capabilities: ⋆/ | |
| 207 | − /⋆ can the hardware decode MPEG1 and/or MPEG2? ⋆/ | |
| 208 | − #define VIDEO_CAP_MPEG1 1 | |
| 209 | − #define VIDEO_CAP_MPEG2 2 | |
| 210 | − /⋆ can you send a system and/or program stream to video device? | |
| 211 | − (you still have to open the video and the audio device but only | |
| 212 | − send the stream to the video device) ⋆/ | |
| 213 | − #define VIDEO_CAP_SYS 4 | |
| 214 | − #define VIDEO_CAP_PROG 8 | |
| 215 | − /⋆ can the driver also handle SPU, NAVI and CSS encoded data? | |
| 216 | − (CSS API is not present yet) ⋆/ | |
| 217 | − #define VIDEO_CAP_SPU 16 | |
| 218 | − #define VIDEO_CAP_NAVI 32 | |
| 219 | − #define VIDEO_CAP_CSS 64 | |
| 220 | −</programlisting> | |
| 221 | −</section> | |
| 222 | − | |
| 223 | −<section id="video-system"> | |
| 224 | −<title>video_system_t</title> | |
| 225 | −<para>A call to VIDEO_SET_SYSTEM sets the desired video system for TV output. The | |
| 226 | −following system types can be set: | |
| 227 | −</para> | |
| 228 | −<programlisting> | |
| 229 | −typedef enum { | |
| 230 | − VIDEO_SYSTEM_PAL, | |
| 231 | − VIDEO_SYSTEM_NTSC, | |
| 232 | − VIDEO_SYSTEM_PALN, | |
| 233 | − VIDEO_SYSTEM_PALNc, | |
| 234 | − VIDEO_SYSTEM_PALM, | |
| 235 | − VIDEO_SYSTEM_NTSC60, | |
| 236 | − VIDEO_SYSTEM_PAL60, | |
| 237 | − VIDEO_SYSTEM_PALM60 | |
| 238 | −} video_system_t; | |
| 239 | −</programlisting> | |
| 240 | −</section> | |
| 241 | − | |
| 242 | −<section id="video-highlight"> | |
| 243 | −<title>struct video_highlight</title> | |
| 244 | −<para>Calling the ioctl VIDEO_SET_HIGHLIGHTS posts the SPU highlight information. The | |
| 245 | −call expects the following format for that information: | |
| 246 | −</para> | |
| 247 | −<programlisting> | |
| 248 | − typedef | |
| 249 | − struct video_highlight { | |
| 250 | − boolean active; /⋆ 1=show highlight, 0=hide highlight ⋆/ | |
| 251 | − uint8_t contrast1; /⋆ 7- 4 Pattern pixel contrast ⋆/ | |
| 252 | − /⋆ 3- 0 Background pixel contrast ⋆/ | |
| 253 | − uint8_t contrast2; /⋆ 7- 4 Emphasis pixel-2 contrast ⋆/ | |
| 254 | − /⋆ 3- 0 Emphasis pixel-1 contrast ⋆/ | |
| 255 | − uint8_t color1; /⋆ 7- 4 Pattern pixel color ⋆/ | |
| 256 | − /⋆ 3- 0 Background pixel color ⋆/ | |
| 257 | − uint8_t color2; /⋆ 7- 4 Emphasis pixel-2 color ⋆/ | |
| 258 | − /⋆ 3- 0 Emphasis pixel-1 color ⋆/ | |
| 259 | − uint32_t ypos; /⋆ 23-22 auto action mode ⋆/ | |
| 260 | − /⋆ 21-12 start y ⋆/ | |
| 261 | − /⋆ 9- 0 end y ⋆/ | |
| 262 | − uint32_t xpos; /⋆ 23-22 button color number ⋆/ | |
| 263 | − /⋆ 21-12 start x ⋆/ | |
| 264 | − /⋆ 9- 0 end x ⋆/ | |
| 265 | − } video_highlight_t; | |
| 266 | −</programlisting> | |
| 267 | − | |
| 268 | −</section> | |
| 269 | −<section id="video-spu"> | |
| 270 | −<title>struct video_spu</title> | |
| 271 | −<para>Calling VIDEO_SET_SPU deactivates or activates SPU decoding, according to the | |
| 272 | −following format: | |
| 273 | −</para> | |
| 274 | −<programlisting> | |
| 275 | − typedef | |
| 276 | − struct video_spu { | |
| 277 | − boolean active; | |
| 278 | − int stream_id; | |
| 279 | − } video_spu_t; | |
| 280 | −</programlisting> | |
| 281 | − | |
| 282 | −</section> | |
| 283 | −<section id="video-spu-palette"> | |
| 284 | −<title>struct video_spu_palette</title> | |
| 285 | −<para>The following structure is used to set the SPU palette by calling VIDEO_SPU_PALETTE: | |
| 286 | −</para> | |
| 287 | −<programlisting> | |
| 288 | − typedef | |
| 289 | − struct video_spu_palette { | |
| 290 | − int length; | |
| 291 | − uint8_t ⋆palette; | |
| 292 | − } video_spu_palette_t; | |
| 293 | −</programlisting> | |
| 294 | − | |
| 295 | −</section> | |
| 296 | −<section id="video-navi-pack"> | |
| 297 | −<title>struct video_navi_pack</title> | |
| 298 | −<para>In order to get the navigational data the following structure has to be passed to the ioctl | |
| 299 | −VIDEO_GET_NAVI: | |
| 300 | −</para> | |
| 301 | −<programlisting> | |
| 302 | − typedef | |
| 303 | − struct video_navi_pack { | |
| 304 | − int length; /⋆ 0 ... 1024 ⋆/ | |
| 305 | − uint8_t data[1024]; | |
| 306 | − } video_navi_pack_t; | |
| 307 | −</programlisting> | |
| 308 | −</section> | |
| 309 | − | |
| 310 | − | |
| 311 | −<section id="video-attributes-t"> | |
| 312 | −<title>video_attributes_t</title> | |
| 313 | −<para>The following attributes can be set by a call to VIDEO_SET_ATTRIBUTES: | |
| 314 | −</para> | |
| 315 | −<programlisting> | |
| 316 | − typedef uint16_t video_attributes_t; | |
| 317 | − /⋆ bits: descr. ⋆/ | |
| 318 | − /⋆ 15-14 Video compression mode (0=MPEG-1, 1=MPEG-2) ⋆/ | |
| 319 | − /⋆ 13-12 TV system (0=525/60, 1=625/50) ⋆/ | |
| 320 | − /⋆ 11-10 Aspect ratio (0=4:3, 3=16:9) ⋆/ | |
| 321 | − /⋆ 9- 8 permitted display mode on 4:3 monitor (0=both, 1=only pan-sca ⋆/ | |
| 322 | − /⋆ 7 line 21-1 data present in GOP (1=yes, 0=no) ⋆/ | |
| 323 | − /⋆ 6 line 21-2 data present in GOP (1=yes, 0=no) ⋆/ | |
| 324 | − /⋆ 5- 3 source resolution (0=720x480/576, 1=704x480/576, 2=352x480/57 ⋆/ | |
| 325 | − /⋆ 2 source letterboxed (1=yes, 0=no) ⋆/ | |
| 326 | − /⋆ 0 film/camera mode (0=camera, 1=film (625/50 only)) ⋆/ | |
| 327 | −</programlisting> | |
| 328 | −</section></section> | |
| 329 | − | |
| 330 | − | |
| 331 | −<section id="video_function_calls"> | |
| 332 | −<title>Video Function Calls</title> | |
| 333 | − | |
| 334 | − | |
| 335 | −<section id="video_fopen"> | |
| 336 | −<title>open()</title> | |
| 337 | −<para>DESCRIPTION | |
| 338 | −</para> | |
| 339 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 340 | − align="char"> | |
| 341 | −<para>This system call opens a named video device (e.g. /dev/dvb/adapter0/video0) | |
| 342 | − for subsequent use.</para> | |
| 343 | −<para>When an open() call has succeeded, the device will be ready for use. | |
| 344 | − The significance of blocking or non-blocking mode is described in the | |
| 345 | − documentation for functions where there is a difference. It does not affect the | |
| 346 | − semantics of the open() call itself. A device opened in blocking mode can later | |
| 347 | − be put into non-blocking mode (and vice versa) using the F_SETFL command | |
| 348 | − of the fcntl system call. This is a standard system call, documented in the Linux | |
| 349 | − manual page for fcntl. Only one user can open the Video Device in O_RDWR | |
| 350 | − mode. All other attempts to open the device in this mode will fail, and an | |
| 351 | − error-code will be returned. If the Video Device is opened in O_RDONLY | |
| 352 | − mode, the only ioctl call that can be used is VIDEO_GET_STATUS. All other | |
| 353 | − call will return an error code.</para> | |
| 354 | −</entry> | |
| 355 | − </row></tbody></tgroup></informaltable> | |
| 356 | − | |
| 357 | −<para>SYNOPSIS | |
| 358 | −</para> | |
| 359 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 360 | − align="char"> | |
| 361 | −<para>int open(const char ⋆deviceName, int flags);</para> | |
| 362 | −</entry> | |
| 363 | − </row></tbody></tgroup></informaltable> | |
| 364 | −<para>PARAMETERS | |
| 365 | −</para> | |
| 366 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 367 | − align="char"> | |
| 368 | −<para>const char | |
| 369 | − *deviceName</para> | |
| 370 | −</entry><entry | |
| 371 | − align="char"> | |
| 372 | −<para>Name of specific video device.</para> | |
| 373 | −</entry> | |
| 374 | − </row><row><entry | |
| 375 | − align="char"> | |
| 376 | −<para>int flags</para> | |
| 377 | −</entry><entry | |
| 378 | − align="char"> | |
| 379 | −<para>A bit-wise OR of the following flags:</para> | |
| 380 | −</entry> | |
| 381 | − </row><row><entry | |
| 382 | − align="char"> | |
| 383 | −</entry><entry | |
| 384 | − align="char"> | |
| 385 | −<para>O_RDONLY read-only access</para> | |
| 386 | −</entry> | |
| 387 | − </row><row><entry | |
| 388 | − align="char"> | |
| 389 | −</entry><entry | |
| 390 | − align="char"> | |
| 391 | −<para>O_RDWR read/write access</para> | |
| 392 | −</entry> | |
| 393 | − </row><row><entry | |
| 394 | − align="char"> | |
| 395 | −</entry><entry | |
| 396 | − align="char"> | |
| 397 | −<para>O_NONBLOCK open in non-blocking mode</para> | |
| 398 | −</entry> | |
| 399 | − </row><row><entry | |
| 400 | − align="char"> | |
| 401 | −</entry><entry | |
| 402 | − align="char"> | |
| 403 | −<para>(blocking mode is the default)</para> | |
| 404 | −</entry> | |
| 405 | − </row></tbody></tgroup></informaltable> | |
| 406 | −<para>RETURN VALUE</para> | |
| 407 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 408 | − align="char"> | |
| 409 | −<para>ENODEV</para> | |
| 410 | −</entry><entry | |
| 411 | − align="char"> | |
| 412 | −<para>Device driver not loaded/available.</para> | |
| 413 | −</entry> | |
| 414 | − </row><row><entry | |
| 415 | − align="char"> | |
| 416 | −<para>EINTERNAL</para> | |
| 417 | −</entry><entry | |
| 418 | − align="char"> | |
| 419 | −<para>Internal error.</para> | |
| 420 | −</entry> | |
| 421 | − </row><row><entry | |
| 422 | − align="char"> | |
| 423 | −<para>EBUSY</para> | |
| 424 | −</entry><entry | |
| 425 | − align="char"> | |
| 426 | −<para>Device or resource busy.</para> | |
| 427 | −</entry> | |
| 428 | − </row><row><entry | |
| 429 | − align="char"> | |
| 430 | −<para>EINVAL</para> | |
| 431 | −</entry><entry | |
| 432 | − align="char"> | |
| 433 | −<para>Invalid argument.</para> | |
| 434 | −</entry> | |
| 435 | − </row></tbody></tgroup></informaltable> | |
| 436 | − | |
| 437 | −</section> | |
| 438 | −<section id="video_fclose"> | |
| 439 | −<title>close()</title> | |
| 440 | −<para>DESCRIPTION | |
| 441 | −</para> | |
| 442 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 443 | − align="char"> | |
| 444 | −<para>This system call closes a previously opened video device.</para> | |
| 445 | −</entry> | |
| 446 | − </row></tbody></tgroup></informaltable> | |
| 447 | −<para>SYNOPSIS | |
| 448 | −</para> | |
| 449 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 450 | − align="char"> | |
| 451 | −<para>int close(int fd);</para> | |
| 452 | −</entry> | |
| 453 | − </row></tbody></tgroup></informaltable> | |
| 454 | −<para>PARAMETERS | |
| 455 | −</para> | |
| 456 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 457 | − align="char"> | |
| 458 | −<para>int fd</para> | |
| 459 | −</entry><entry | |
| 460 | − align="char"> | |
| 461 | −<para>File descriptor returned by a previous call to open().</para> | |
| 462 | −</entry> | |
| 463 | − </row></tbody></tgroup></informaltable> | |
| 464 | −<para>RETURN VALUE</para> | |
| 465 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 466 | − align="char"> | |
| 467 | −<para>EBADF</para> | |
| 468 | −</entry><entry | |
| 469 | − align="char"> | |
| 470 | −<para>fd is not a valid open file descriptor.</para> | |
| 471 | −</entry> | |
| 472 | − </row></tbody></tgroup></informaltable> | |
| 473 | − | |
| 474 | −</section> | |
| 475 | −<section id="video_fwrite"> | |
| 476 | −<title>write()</title> | |
| 477 | −<para>DESCRIPTION | |
| 478 | −</para> | |
| 479 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 480 | − align="char"> | |
| 481 | −<para>This system call can only be used if VIDEO_SOURCE_MEMORY is selected | |
| 482 | − in the ioctl call VIDEO_SELECT_SOURCE. The data provided shall be in | |
| 483 | − PES format, unless the capability allows other formats. If O_NONBLOCK is | |
| 484 | − not specified the function will block until buffer space is available. The amount | |
| 485 | − of data to be transferred is implied by count.</para> | |
| 486 | −</entry> | |
| 487 | − </row></tbody></tgroup></informaltable> | |
| 488 | −<para>SYNOPSIS | |
| 489 | −</para> | |
| 490 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 491 | − align="char"> | |
| 492 | −<para>size_t write(int fd, const void ⋆buf, size_t count);</para> | |
| 493 | −</entry> | |
| 494 | − </row></tbody></tgroup></informaltable> | |
| 495 | −<para>PARAMETERS | |
| 496 | −</para> | |
| 497 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 498 | − align="char"> | |
| 499 | −<para>int fd</para> | |
| 500 | −</entry><entry | |
| 501 | − align="char"> | |
| 502 | −<para>File descriptor returned by a previous call to open().</para> | |
| 503 | −</entry> | |
| 504 | − </row><row><entry | |
| 505 | − align="char"> | |
| 506 | −<para>void *buf</para> | |
| 507 | −</entry><entry | |
| 508 | − align="char"> | |
| 509 | −<para>Pointer to the buffer containing the PES data.</para> | |
| 510 | −</entry> | |
| 511 | − </row><row><entry | |
| 512 | − align="char"> | |
| 513 | −<para>size_t count</para> | |
| 514 | −</entry><entry | |
| 515 | − align="char"> | |
| 516 | −<para>Size of buf.</para> | |
| 517 | −</entry> | |
| 518 | − </row></tbody></tgroup></informaltable> | |
| 519 | −<para>RETURN VALUE</para> | |
| 520 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 521 | − align="char"> | |
| 522 | −<para>EPERM</para> | |
| 523 | −</entry><entry | |
| 524 | − align="char"> | |
| 525 | −<para>Mode VIDEO_SOURCE_MEMORY not selected.</para> | |
| 526 | −</entry> | |
| 527 | − </row><row><entry | |
| 528 | − align="char"> | |
| 529 | −<para>ENOMEM</para> | |
| 530 | −</entry><entry | |
| 531 | − align="char"> | |
| 532 | −<para>Attempted to write more data than the internal buffer can | |
| 533 | − hold.</para> | |
| 534 | −</entry> | |
| 535 | − </row><row><entry | |
| 536 | − align="char"> | |
| 537 | −<para>EBADF</para> | |
| 538 | −</entry><entry | |
| 539 | − align="char"> | |
| 540 | −<para>fd is not a valid open file descriptor.</para> | |
| 541 | −</entry> | |
| 542 | − </row></tbody></tgroup></informaltable> | |
| 543 | − | |
| 544 | −</section><section id="VIDEO_STOP" | |
| 545 | −role="subsection"><title>VIDEO_STOP</title> | |
| 546 | −<para>DESCRIPTION | |
| 547 | −</para> | |
| 548 | −<para>This ioctl is for DVB devices only. To control a V4L2 decoder use the V4L2 | |
| 549 | −&VIDIOC-DECODER-CMD; instead.</para> | |
| 550 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 551 | − align="char"> | |
| 552 | −<para>This ioctl call asks the Video Device to stop playing the current stream. | |
| 553 | − Depending on the input parameter, the screen can be blanked out or displaying | |
| 554 | − the last decoded frame.</para> | |
| 555 | −</entry> | |
| 556 | − </row></tbody></tgroup></informaltable> | |
| 557 | −<para>SYNOPSIS | |
| 558 | −</para> | |
| 559 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 560 | − align="char"> | |
| 561 | −<para>int ioctl(fd, int request = VIDEO_STOP, boolean | |
| 562 | − mode);</para> | |
| 563 | −</entry> | |
| 564 | − </row></tbody></tgroup></informaltable> | |
| 565 | −<para>PARAMETERS | |
| 566 | −</para> | |
| 567 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 568 | − align="char"> | |
| 569 | −<para>int fd</para> | |
| 570 | −</entry><entry | |
| 571 | − align="char"> | |
| 572 | −<para>File descriptor returned by a previous call to open().</para> | |
| 573 | −</entry> | |
| 574 | − </row><row><entry | |
| 575 | − align="char"> | |
| 576 | −<para>int request</para> | |
| 577 | −</entry><entry | |
| 578 | − align="char"> | |
| 579 | −<para>Equals VIDEO_STOP for this command.</para> | |
| 580 | −</entry> | |
| 581 | − </row><row><entry | |
| 582 | − align="char"> | |
| 583 | −<para>Boolean mode</para> | |
| 584 | −</entry><entry | |
| 585 | − align="char"> | |
| 586 | −<para>Indicates how the screen shall be handled.</para> | |
| 587 | −</entry> | |
| 588 | − </row><row><entry | |
| 589 | − align="char"> | |
| 590 | −</entry><entry | |
| 591 | − align="char"> | |
| 592 | −<para>TRUE: Blank screen when stop.</para> | |
| 593 | −</entry> | |
| 594 | − </row><row><entry | |
| 595 | − align="char"> | |
| 596 | −</entry><entry | |
| 597 | − align="char"> | |
| 598 | −<para>FALSE: Show last decoded frame.</para> | |
| 599 | −</entry> | |
| 600 | − </row></tbody></tgroup></informaltable> | |
| 601 | −&return-value-dvb; | |
| 602 | − | |
| 603 | −</section><section id="VIDEO_PLAY" | |
| 604 | −role="subsection"><title>VIDEO_PLAY</title> | |
| 605 | −<para>DESCRIPTION | |
| 606 | −</para> | |
| 607 | −<para>This ioctl is for DVB devices only. To control a V4L2 decoder use the V4L2 | |
| 608 | −&VIDIOC-DECODER-CMD; instead.</para> | |
| 609 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 610 | − align="char"> | |
| 611 | −<para>This ioctl call asks the Video Device to start playing a video stream from the | |
| 612 | − selected source.</para> | |
| 613 | −</entry> | |
| 614 | − </row></tbody></tgroup></informaltable> | |
| 615 | −<para>SYNOPSIS | |
| 616 | −</para> | |
| 617 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 618 | − align="char"> | |
| 619 | −<para>int ioctl(fd, int request = VIDEO_PLAY);</para> | |
| 620 | −</entry> | |
| 621 | − </row></tbody></tgroup></informaltable> | |
| 622 | −<para>PARAMETERS | |
| 623 | −</para> | |
| 624 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 625 | − align="char"> | |
| 626 | −<para>int fd</para> | |
| 627 | −</entry><entry | |
| 628 | − align="char"> | |
| 629 | −<para>File descriptor returned by a previous call to open().</para> | |
| 630 | −</entry> | |
| 631 | − </row><row><entry | |
| 632 | − align="char"> | |
| 633 | −<para>int request</para> | |
| 634 | −</entry><entry | |
| 635 | − align="char"> | |
| 636 | −<para>Equals VIDEO_PLAY for this command.</para> | |
| 637 | −</entry> | |
| 638 | − </row></tbody></tgroup></informaltable> | |
| 639 | −&return-value-dvb; | |
| 640 | − | |
| 641 | −</section><section id="VIDEO_FREEZE" | |
| 642 | −role="subsection"><title>VIDEO_FREEZE</title> | |
| 643 | −<para>DESCRIPTION | |
| 644 | −</para> | |
| 645 | −<para>This ioctl is for DVB devices only. To control a V4L2 decoder use the V4L2 | |
| 646 | −&VIDIOC-DECODER-CMD; instead.</para> | |
| 647 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 648 | − align="char"> | |
| 649 | −<para>This ioctl call suspends the live video stream being played. Decoding | |
| 650 | − and playing are frozen. It is then possible to restart the decoding | |
| 651 | − and playing process of the video stream using the VIDEO_CONTINUE | |
| 652 | − command. If VIDEO_SOURCE_MEMORY is selected in the ioctl call | |
| 653 | − VIDEO_SELECT_SOURCE, the DVB subsystem will not decode any more | |
| 654 | − data until the ioctl call VIDEO_CONTINUE or VIDEO_PLAY is performed.</para> | |
| 655 | −</entry> | |
| 656 | − </row></tbody></tgroup></informaltable> | |
| 657 | −<para>SYNOPSIS | |
| 658 | −</para> | |
| 659 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 660 | − align="char"> | |
| 661 | −<para>int ioctl(fd, int request = VIDEO_FREEZE);</para> | |
| 662 | −</entry> | |
| 663 | − </row></tbody></tgroup></informaltable> | |
| 664 | −<para>PARAMETERS | |
| 665 | −</para> | |
| 666 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 667 | − align="char"> | |
| 668 | −<para>int fd</para> | |
| 669 | −</entry><entry | |
| 670 | − align="char"> | |
| 671 | −<para>File descriptor returned by a previous call to open().</para> | |
| 672 | −</entry> | |
| 673 | − </row><row><entry | |
| 674 | − align="char"> | |
| 675 | −<para>int request</para> | |
| 676 | −</entry><entry | |
| 677 | − align="char"> | |
| 678 | −<para>Equals VIDEO_FREEZE for this command.</para> | |
| 679 | −</entry> | |
| 680 | − </row></tbody></tgroup></informaltable> | |
| 681 | −&return-value-dvb; | |
| 682 | − | |
| 683 | −</section><section id="VIDEO_CONTINUE" | |
| 684 | −role="subsection"><title>VIDEO_CONTINUE</title> | |
| 685 | −<para>DESCRIPTION | |
| 686 | −</para> | |
| 687 | −<para>This ioctl is for DVB devices only. To control a V4L2 decoder use the V4L2 | |
| 688 | −&VIDIOC-DECODER-CMD; instead.</para> | |
| 689 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 690 | − align="char"> | |
| 691 | −<para>This ioctl call restarts decoding and playing processes of the video stream | |
| 692 | − which was played before a call to VIDEO_FREEZE was made.</para> | |
| 693 | −</entry> | |
| 694 | − </row></tbody></tgroup></informaltable> | |
| 695 | −<para>SYNOPSIS | |
| 696 | −</para> | |
| 697 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 698 | − align="char"> | |
| 699 | −<para>int ioctl(fd, int request = VIDEO_CONTINUE);</para> | |
| 700 | −</entry> | |
| 701 | − </row></tbody></tgroup></informaltable> | |
| 702 | −<para>PARAMETERS | |
| 703 | −</para> | |
| 704 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 705 | − align="char"> | |
| 706 | −<para>int fd</para> | |
| 707 | −</entry><entry | |
| 708 | − align="char"> | |
| 709 | −<para>File descriptor returned by a previous call to open().</para> | |
| 710 | −</entry> | |
| 711 | − </row><row><entry | |
| 712 | − align="char"> | |
| 713 | −<para>int request</para> | |
| 714 | −</entry><entry | |
| 715 | − align="char"> | |
| 716 | −<para>Equals VIDEO_CONTINUE for this command.</para> | |
| 717 | −</entry> | |
| 718 | − </row></tbody></tgroup></informaltable> | |
| 719 | −&return-value-dvb; | |
| 720 | − | |
| 721 | −</section><section id="VIDEO_SELECT_SOURCE" | |
| 722 | −role="subsection"><title>VIDEO_SELECT_SOURCE</title> | |
| 723 | −<para>DESCRIPTION | |
| 724 | −</para> | |
| 725 | −<para>This ioctl is for DVB devices only. This ioctl was also supported by the | |
| 726 | −V4L2 ivtv driver, but that has been replaced by the ivtv-specific | |
| 727 | −<constant>IVTV_IOC_PASSTHROUGH_MODE</constant> ioctl.</para> | |
| 728 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 729 | − align="char"> | |
| 730 | −<para>This ioctl call informs the video device which source shall be used for the input | |
| 731 | − data. The possible sources are demux or memory. If memory is selected, the | |
| 732 | − data is fed to the video device through the write command.</para> | |
| 733 | −</entry> | |
| 734 | − </row></tbody></tgroup></informaltable> | |
| 735 | −<para>SYNOPSIS | |
| 736 | −</para> | |
| 737 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 738 | − align="char"> | |
| 739 | −<para>int ioctl(fd, int request = VIDEO_SELECT_SOURCE, | |
| 740 | − video_stream_source_t source);</para> | |
| 741 | −</entry> | |
| 742 | − </row></tbody></tgroup></informaltable> | |
| 743 | −<para>PARAMETERS | |
| 744 | −</para> | |
| 745 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 746 | − align="char"> | |
| 747 | −<para>int fd</para> | |
| 748 | −</entry><entry | |
| 749 | − align="char"> | |
| 750 | −<para>File descriptor returned by a previous call to open().</para> | |
| 751 | −</entry> | |
| 752 | − </row><row><entry | |
| 753 | − align="char"> | |
| 754 | −<para>int request</para> | |
| 755 | −</entry><entry | |
| 756 | − align="char"> | |
| 757 | −<para>Equals VIDEO_SELECT_SOURCE for this command.</para> | |
| 758 | −</entry> | |
| 759 | − </row><row><entry | |
| 760 | − align="char"> | |
| 761 | −<para>video_stream_source_t | |
| 762 | − source</para> | |
| 763 | −</entry><entry | |
| 764 | − align="char"> | |
| 765 | −<para>Indicates which source shall be used for the Video stream.</para> | |
| 766 | −</entry> | |
| 767 | − </row></tbody></tgroup></informaltable> | |
| 768 | −&return-value-dvb; | |
| 769 | − | |
| 770 | −</section><section id="VIDEO_SET_BLANK" | |
| 771 | −role="subsection"><title>VIDEO_SET_BLANK</title> | |
| 772 | −<para>DESCRIPTION | |
| 773 | −</para> | |
| 774 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 775 | − align="char"> | |
| 776 | −<para>This ioctl call asks the Video Device to blank out the picture.</para> | |
| 777 | −</entry> | |
| 778 | − </row></tbody></tgroup></informaltable> | |
| 779 | −<para>SYNOPSIS | |
| 780 | −</para> | |
| 781 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 782 | − align="char"> | |
| 783 | −<para>int ioctl(fd, int request = VIDEO_SET_BLANK, boolean | |
| 784 | − mode);</para> | |
| 785 | −</entry> | |
| 786 | − </row></tbody></tgroup></informaltable> | |
| 787 | −<para>PARAMETERS | |
| 788 | −</para> | |
| 789 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 790 | − align="char"> | |
| 791 | −<para>int fd</para> | |
| 792 | −</entry><entry | |
| 793 | − align="char"> | |
| 794 | −<para>File descriptor returned by a previous call to open().</para> | |
| 795 | −</entry> | |
| 796 | − </row><row><entry | |
| 797 | − align="char"> | |
| 798 | −<para>int request</para> | |
| 799 | −</entry><entry | |
| 800 | − align="char"> | |
| 801 | −<para>Equals VIDEO_SET_BLANK for this command.</para> | |
| 802 | −</entry> | |
| 803 | − </row><row><entry | |
| 804 | − align="char"> | |
| 805 | −<para>boolean mode</para> | |
| 806 | −</entry><entry | |
| 807 | − align="char"> | |
| 808 | −<para>TRUE: Blank screen when stop.</para> | |
| 809 | −</entry> | |
| 810 | − </row><row><entry | |
| 811 | − align="char"> | |
| 812 | −</entry><entry | |
| 813 | − align="char"> | |
| 814 | −<para>FALSE: Show last decoded frame.</para> | |
| 815 | −</entry> | |
| 816 | − </row></tbody></tgroup></informaltable> | |
| 817 | −&return-value-dvb; | |
| 818 | − | |
| 819 | −</section><section id="VIDEO_GET_STATUS" | |
| 820 | −role="subsection"><title>VIDEO_GET_STATUS</title> | |
| 821 | −<para>DESCRIPTION | |
| 822 | −</para> | |
| 823 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 824 | − align="char"> | |
| 825 | −<para>This ioctl call asks the Video Device to return the current status of the device.</para> | |
| 826 | −</entry> | |
| 827 | − </row></tbody></tgroup></informaltable> | |
| 828 | −<para>SYNOPSIS | |
| 829 | −</para> | |
| 830 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 831 | − align="char"> | |
| 832 | −<para> int ioctl(fd, int request = VIDEO_GET_STATUS, struct | |
| 833 | − video_status ⋆status);</para> | |
| 834 | −</entry> | |
| 835 | − </row></tbody></tgroup></informaltable> | |
| 836 | −<para>PARAMETERS | |
| 837 | −</para> | |
| 838 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 839 | − align="char"> | |
| 840 | −<para>int fd</para> | |
| 841 | −</entry><entry | |
| 842 | − align="char"> | |
| 843 | −<para>File descriptor returned by a previous call to open().</para> | |
| 844 | −</entry> | |
| 845 | − </row><row><entry | |
| 846 | − align="char"> | |
| 847 | −<para>int request</para> | |
| 848 | −</entry><entry | |
| 849 | − align="char"> | |
| 850 | −<para>Equals VIDEO_GET_STATUS for this command.</para> | |
| 851 | −</entry> | |
| 852 | − </row><row><entry | |
| 853 | − align="char"> | |
| 854 | −<para>struct video_status | |
| 855 | − *status</para> | |
| 856 | −</entry><entry | |
| 857 | − align="char"> | |
| 858 | −<para>Returns the current status of the Video Device.</para> | |
| 859 | −</entry> | |
| 860 | − </row></tbody></tgroup></informaltable> | |
| 861 | −&return-value-dvb; | |
| 862 | − | |
| 863 | −</section><section id="VIDEO_GET_FRAME_COUNT" | |
| 864 | −role="subsection"><title>VIDEO_GET_FRAME_COUNT</title> | |
| 865 | −<para>DESCRIPTION | |
| 866 | −</para> | |
| 867 | −<para>This ioctl is obsolete. Do not use in new drivers. For V4L2 decoders this | |
| 868 | −ioctl has been replaced by the <constant>V4L2_CID_MPEG_VIDEO_DEC_FRAME</constant> control.</para> | |
| 869 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 870 | − align="char"> | |
| 871 | −<para>This ioctl call asks the Video Device to return the number of displayed frames | |
| 872 | −since the decoder was started.</para> | |
| 873 | −</entry> | |
| 874 | − </row></tbody></tgroup></informaltable> | |
| 875 | −<para>SYNOPSIS | |
| 876 | −</para> | |
| 877 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 878 | − align="char"> | |
| 879 | −<para>int ioctl(int fd, int request = | |
| 880 | − VIDEO_GET_FRAME_COUNT, __u64 *pts);</para> | |
| 881 | −</entry> | |
| 882 | − </row></tbody></tgroup></informaltable> | |
| 883 | −<para>PARAMETERS | |
| 884 | −</para> | |
| 885 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 886 | − align="char"> | |
| 887 | −<para>int fd</para> | |
| 888 | −</entry><entry | |
| 889 | − align="char"> | |
| 890 | −<para>File descriptor returned by a previous call to open().</para> | |
| 891 | −</entry> | |
| 892 | − </row><row><entry | |
| 893 | − align="char"> | |
| 894 | −<para>int request</para> | |
| 895 | −</entry><entry | |
| 896 | − align="char"> | |
| 897 | −<para>Equals VIDEO_GET_FRAME_COUNT for this | |
| 898 | − command.</para> | |
| 899 | −</entry> | |
| 900 | − </row><row><entry | |
| 901 | − align="char"> | |
| 902 | −<para>__u64 *pts | |
| 903 | −</para> | |
| 904 | −</entry><entry | |
| 905 | − align="char"> | |
| 906 | −<para>Returns the number of frames displayed since the decoder was started. | |
| 907 | −</para> | |
| 908 | −</entry> | |
| 909 | − </row></tbody></tgroup></informaltable> | |
| 910 | −&return-value-dvb; | |
| 911 | − | |
| 912 | −</section><section id="VIDEO_GET_PTS" | |
| 913 | −role="subsection"><title>VIDEO_GET_PTS</title> | |
| 914 | −<para>DESCRIPTION | |
| 915 | −</para> | |
| 916 | −<para>This ioctl is obsolete. Do not use in new drivers. For V4L2 decoders this | |
| 917 | −ioctl has been replaced by the <constant>V4L2_CID_MPEG_VIDEO_DEC_PTS</constant> control.</para> | |
| 918 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 919 | − align="char"> | |
| 920 | −<para>This ioctl call asks the Video Device to return the current PTS timestamp.</para> | |
| 921 | −</entry> | |
| 922 | − </row></tbody></tgroup></informaltable> | |
| 923 | −<para>SYNOPSIS | |
| 924 | −</para> | |
| 925 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 926 | − align="char"> | |
| 927 | −<para>int ioctl(int fd, int request = | |
| 928 | − VIDEO_GET_PTS, __u64 *pts);</para> | |
| 929 | −</entry> | |
| 930 | − </row></tbody></tgroup></informaltable> | |
| 931 | −<para>PARAMETERS | |
| 932 | −</para> | |
| 933 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 934 | − align="char"> | |
| 935 | −<para>int fd</para> | |
| 936 | −</entry><entry | |
| 937 | − align="char"> | |
| 938 | −<para>File descriptor returned by a previous call to open().</para> | |
| 939 | −</entry> | |
| 940 | − </row><row><entry | |
| 941 | − align="char"> | |
| 942 | −<para>int request</para> | |
| 943 | −</entry><entry | |
| 944 | − align="char"> | |
| 945 | −<para>Equals VIDEO_GET_PTS for this | |
| 946 | − command.</para> | |
| 947 | −</entry> | |
| 948 | − </row><row><entry | |
| 949 | − align="char"> | |
| 950 | −<para>__u64 *pts | |
| 951 | −</para> | |
| 952 | −</entry><entry | |
| 953 | − align="char"> | |
| 954 | −<para>Returns the 33-bit timestamp as defined in ITU T-REC-H.222.0 / ISO/IEC 13818-1. | |
| 955 | −</para> | |
| 956 | −<para> | |
| 957 | −The PTS should belong to the currently played | |
| 958 | −frame if possible, but may also be a value close to it | |
| 959 | −like the PTS of the last decoded frame or the last PTS | |
| 960 | −extracted by the PES parser.</para> | |
| 961 | −</entry> | |
| 962 | − </row></tbody></tgroup></informaltable> | |
| 963 | −&return-value-dvb; | |
| 964 | − | |
| 965 | −</section><section id="VIDEO_GET_FRAME_RATE" | |
| 966 | −role="subsection"><title>VIDEO_GET_FRAME_RATE</title> | |
| 967 | −<para>DESCRIPTION | |
| 968 | −</para> | |
| 969 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 970 | − align="char"> | |
| 971 | −<para>This ioctl call asks the Video Device to return the current framerate.</para> | |
| 972 | −</entry> | |
| 973 | − </row></tbody></tgroup></informaltable> | |
| 974 | −<para>SYNOPSIS | |
| 975 | −</para> | |
| 976 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 977 | − align="char"> | |
| 978 | −<para>int ioctl(int fd, int request = | |
| 979 | − VIDEO_GET_FRAME_RATE, unsigned int *rate);</para> | |
| 980 | −</entry> | |
| 981 | − </row></tbody></tgroup></informaltable> | |
| 982 | −<para>PARAMETERS | |
| 983 | −</para> | |
| 984 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 985 | − align="char"> | |
| 986 | −<para>int fd</para> | |
| 987 | −</entry><entry | |
| 988 | − align="char"> | |
| 989 | −<para>File descriptor returned by a previous call to open().</para> | |
| 990 | −</entry> | |
| 991 | − </row><row><entry | |
| 992 | − align="char"> | |
| 993 | −<para>int request</para> | |
| 994 | −</entry><entry | |
| 995 | − align="char"> | |
| 996 | −<para>Equals VIDEO_GET_FRAME_RATE for this | |
| 997 | − command.</para> | |
| 998 | −</entry> | |
| 999 | − </row><row><entry | |
| 1000 | − align="char"> | |
| 1001 | −<para>unsigned int *rate | |
| 1002 | −</para> | |
| 1003 | −</entry><entry | |
| 1004 | − align="char"> | |
| 1005 | −<para>Returns the framerate in number of frames per 1000 seconds. | |
| 1006 | −</para> | |
| 1007 | −</entry> | |
| 1008 | − </row></tbody></tgroup></informaltable> | |
| 1009 | −&return-value-dvb; | |
| 1010 | − | |
| 1011 | −</section><section id="VIDEO_GET_EVENT" | |
| 1012 | −role="subsection"><title>VIDEO_GET_EVENT</title> | |
| 1013 | −<para>DESCRIPTION | |
| 1014 | −</para> | |
| 1015 | −<para>This ioctl is for DVB devices only. To get events from a V4L2 decoder use the V4L2 | |
| 1016 | −&VIDIOC-DQEVENT; ioctl instead.</para> | |
| 1017 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1018 | − align="char"> | |
| 1019 | −<para>This ioctl call returns an event of type video_event if available. If an event is | |
| 1020 | − not available, the behavior depends on whether the device is in blocking or | |
| 1021 | − non-blocking mode. In the latter case, the call fails immediately with errno | |
| 1022 | − set to EWOULDBLOCK. In the former case, the call blocks until an event | |
| 1023 | − becomes available. The standard Linux poll() and/or select() system calls can | |
| 1024 | − be used with the device file descriptor to watch for new events. For select(), | |
| 1025 | − the file descriptor should be included in the exceptfds argument, and for | |
| 1026 | − poll(), POLLPRI should be specified as the wake-up condition. Read-only | |
| 1027 | − permissions are sufficient for this ioctl call.</para> | |
| 1028 | −</entry> | |
| 1029 | − </row></tbody></tgroup></informaltable> | |
| 1030 | −<para>SYNOPSIS | |
| 1031 | −</para> | |
| 1032 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1033 | − align="char"> | |
| 1034 | −<para> int ioctl(fd, int request = VIDEO_GET_EVENT, struct | |
| 1035 | − video_event ⋆ev);</para> | |
| 1036 | −</entry> | |
| 1037 | − </row></tbody></tgroup></informaltable> | |
| 1038 | −<para>PARAMETERS | |
| 1039 | −</para> | |
| 1040 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1041 | − align="char"> | |
| 1042 | −<para>int fd</para> | |
| 1043 | −</entry><entry | |
| 1044 | − align="char"> | |
| 1045 | −<para>File descriptor returned by a previous call to open().</para> | |
| 1046 | −</entry> | |
| 1047 | − </row><row><entry | |
| 1048 | − align="char"> | |
| 1049 | −<para>int request</para> | |
| 1050 | −</entry><entry | |
| 1051 | − align="char"> | |
| 1052 | −<para>Equals VIDEO_GET_EVENT for this command.</para> | |
| 1053 | −</entry> | |
| 1054 | − </row><row><entry | |
| 1055 | − align="char"> | |
| 1056 | −<para>struct video_event | |
| 1057 | − *ev</para> | |
| 1058 | −</entry><entry | |
| 1059 | − align="char"> | |
| 1060 | −<para>Points to the location where the event, if any, is to be | |
| 1061 | − stored.</para> | |
| 1062 | −</entry> | |
| 1063 | − </row></tbody></tgroup></informaltable> | |
| 1064 | −&return-value-dvb; | |
| 1065 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1066 | − align="char"> | |
| 1067 | −<para>EWOULDBLOCK</para> | |
| 1068 | −</entry><entry | |
| 1069 | − align="char"> | |
| 1070 | −<para>There is no event pending, and the device is in | |
| 1071 | − non-blocking mode.</para> | |
| 1072 | −</entry> | |
| 1073 | − </row><row><entry | |
| 1074 | − align="char"> | |
| 1075 | −<para>EOVERFLOW</para> | |
| 1076 | −</entry><entry | |
| 1077 | − align="char"> | |
| 1078 | −<para>Overflow in event queue - one or more events were lost.</para> | |
| 1079 | −</entry> | |
| 1080 | − </row></tbody></tgroup></informaltable> | |
| 1081 | − | |
| 1082 | −</section><section id="VIDEO_COMMAND" | |
| 1083 | −role="subsection"><title>VIDEO_COMMAND</title> | |
| 1084 | −<para>DESCRIPTION | |
| 1085 | −</para> | |
| 1086 | −<para>This ioctl is obsolete. Do not use in new drivers. For V4L2 decoders this | |
| 1087 | −ioctl has been replaced by the &VIDIOC-DECODER-CMD; ioctl.</para> | |
| 1088 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1089 | − align="char"> | |
| 1090 | −<para>This ioctl commands the decoder. The <constant>video_command</constant> struct | |
| 1091 | −is a subset of the <constant>v4l2_decoder_cmd</constant> struct, so refer to the | |
| 1092 | −&VIDIOC-DECODER-CMD; documentation for more information.</para> | |
| 1093 | −</entry> | |
| 1094 | − </row></tbody></tgroup></informaltable> | |
| 1095 | −<para>SYNOPSIS | |
| 1096 | −</para> | |
| 1097 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1098 | − align="char"> | |
| 1099 | −<para>int ioctl(int fd, int request = | |
| 1100 | − VIDEO_COMMAND, struct video_command *cmd);</para> | |
| 1101 | −</entry> | |
| 1102 | − </row></tbody></tgroup></informaltable> | |
| 1103 | −<para>PARAMETERS | |
| 1104 | −</para> | |
| 1105 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1106 | − align="char"> | |
| 1107 | −<para>int fd</para> | |
| 1108 | −</entry><entry | |
| 1109 | − align="char"> | |
| 1110 | −<para>File descriptor returned by a previous call to open().</para> | |
| 1111 | −</entry> | |
| 1112 | − </row><row><entry | |
| 1113 | − align="char"> | |
| 1114 | −<para>int request</para> | |
| 1115 | −</entry><entry | |
| 1116 | − align="char"> | |
| 1117 | −<para>Equals VIDEO_COMMAND for this | |
| 1118 | − command.</para> | |
| 1119 | −</entry> | |
| 1120 | − </row><row><entry | |
| 1121 | − align="char"> | |
| 1122 | −<para>struct video_command *cmd | |
| 1123 | −</para> | |
| 1124 | −</entry><entry | |
| 1125 | − align="char"> | |
| 1126 | −<para>Commands the decoder. | |
| 1127 | −</para> | |
| 1128 | −</entry> | |
| 1129 | − </row></tbody></tgroup></informaltable> | |
| 1130 | −&return-value-dvb; | |
| 1131 | − | |
| 1132 | −</section><section id="VIDEO_TRY_COMMAND" | |
| 1133 | −role="subsection"><title>VIDEO_TRY_COMMAND</title> | |
| 1134 | −<para>DESCRIPTION | |
| 1135 | −</para> | |
| 1136 | −<para>This ioctl is obsolete. Do not use in new drivers. For V4L2 decoders this | |
| 1137 | −ioctl has been replaced by the &VIDIOC-TRY-DECODER-CMD; ioctl.</para> | |
| 1138 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1139 | − align="char"> | |
| 1140 | −<para>This ioctl tries a decoder command. The <constant>video_command</constant> struct | |
| 1141 | −is a subset of the <constant>v4l2_decoder_cmd</constant> struct, so refer to the | |
| 1142 | −&VIDIOC-TRY-DECODER-CMD; documentation for more information.</para> | |
| 1143 | −</entry> | |
| 1144 | − </row></tbody></tgroup></informaltable> | |
| 1145 | −<para>SYNOPSIS | |
| 1146 | −</para> | |
| 1147 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1148 | − align="char"> | |
| 1149 | −<para>int ioctl(int fd, int request = | |
| 1150 | − VIDEO_TRY_COMMAND, struct video_command *cmd);</para> | |
| 1151 | −</entry> | |
| 1152 | − </row></tbody></tgroup></informaltable> | |
| 1153 | −<para>PARAMETERS | |
| 1154 | −</para> | |
| 1155 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1156 | − align="char"> | |
| 1157 | −<para>int fd</para> | |
| 1158 | −</entry><entry | |
| 1159 | − align="char"> | |
| 1160 | −<para>File descriptor returned by a previous call to open().</para> | |
| 1161 | −</entry> | |
| 1162 | − </row><row><entry | |
| 1163 | − align="char"> | |
| 1164 | −<para>int request</para> | |
| 1165 | −</entry><entry | |
| 1166 | − align="char"> | |
| 1167 | −<para>Equals VIDEO_TRY_COMMAND for this | |
| 1168 | − command.</para> | |
| 1169 | −</entry> | |
| 1170 | − </row><row><entry | |
| 1171 | − align="char"> | |
| 1172 | −<para>struct video_command *cmd | |
| 1173 | −</para> | |
| 1174 | −</entry><entry | |
| 1175 | − align="char"> | |
| 1176 | −<para>Try a decoder command. | |
| 1177 | −</para> | |
| 1178 | −</entry> | |
| 1179 | − </row></tbody></tgroup></informaltable> | |
| 1180 | −&return-value-dvb; | |
| 1181 | − | |
| 1182 | −</section><section id="VIDEO_GET_SIZE" | |
| 1183 | −role="subsection"><title>VIDEO_GET_SIZE</title> | |
| 1184 | −<para>DESCRIPTION | |
| 1185 | −</para> | |
| 1186 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1187 | − align="char"> | |
| 1188 | −<para>This ioctl returns the size and aspect ratio.</para> | |
| 1189 | −</entry> | |
| 1190 | − </row></tbody></tgroup></informaltable> | |
| 1191 | −<para>SYNOPSIS | |
| 1192 | −</para> | |
| 1193 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1194 | − align="char"> | |
| 1195 | −<para>int ioctl(int fd, int request = | |
| 1196 | − VIDEO_GET_SIZE, video_size_t *size);</para> | |
| 1197 | −</entry> | |
| 1198 | − </row></tbody></tgroup></informaltable> | |
| 1199 | −<para>PARAMETERS | |
| 1200 | −</para> | |
| 1201 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1202 | − align="char"> | |
| 1203 | −<para>int fd</para> | |
| 1204 | −</entry><entry | |
| 1205 | − align="char"> | |
| 1206 | −<para>File descriptor returned by a previous call to open().</para> | |
| 1207 | −</entry> | |
| 1208 | − </row><row><entry | |
| 1209 | − align="char"> | |
| 1210 | −<para>int request</para> | |
| 1211 | −</entry><entry | |
| 1212 | − align="char"> | |
| 1213 | −<para>Equals VIDEO_GET_SIZE for this | |
| 1214 | − command.</para> | |
| 1215 | −</entry> | |
| 1216 | − </row><row><entry | |
| 1217 | − align="char"> | |
| 1218 | −<para>video_size_t *size | |
| 1219 | −</para> | |
| 1220 | −</entry><entry | |
| 1221 | − align="char"> | |
| 1222 | −<para>Returns the size and aspect ratio. | |
| 1223 | −</para> | |
| 1224 | −</entry> | |
| 1225 | − </row></tbody></tgroup></informaltable> | |
| 1226 | −&return-value-dvb; | |
| 1227 | − | |
| 1228 | −</section><section id="VIDEO_SET_DISPLAY_FORMAT" | |
| 1229 | −role="subsection"><title>VIDEO_SET_DISPLAY_FORMAT</title> | |
| 1230 | −<para>DESCRIPTION | |
| 1231 | −</para> | |
| 1232 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1233 | − align="char"> | |
| 1234 | −<para>This ioctl call asks the Video Device to select the video format to be applied | |
| 1235 | − by the MPEG chip on the video.</para> | |
| 1236 | −</entry> | |
| 1237 | − </row></tbody></tgroup></informaltable> | |
| 1238 | −<para>SYNOPSIS | |
| 1239 | −</para> | |
| 1240 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1241 | − align="char"> | |
| 1242 | −<para> int ioctl(fd, int request = | |
| 1243 | − VIDEO_SET_DISPLAY_FORMAT, video_display_format_t | |
| 1244 | − format);</para> | |
| 1245 | −</entry> | |
| 1246 | − </row></tbody></tgroup></informaltable> | |
| 1247 | −<para>PARAMETERS | |
| 1248 | −</para> | |
| 1249 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1250 | − align="char"> | |
| 1251 | −<para>int fd</para> | |
| 1252 | −</entry><entry | |
| 1253 | − align="char"> | |
| 1254 | −<para>File descriptor returned by a previous call to open().</para> | |
| 1255 | −</entry> | |
| 1256 | − </row><row><entry | |
| 1257 | − align="char"> | |
| 1258 | −<para>int request</para> | |
| 1259 | −</entry><entry | |
| 1260 | − align="char"> | |
| 1261 | −<para>Equals VIDEO_SET_DISPLAY_FORMAT for this | |
| 1262 | − command.</para> | |
| 1263 | −</entry> | |
| 1264 | − </row><row><entry | |
| 1265 | − align="char"> | |
| 1266 | −<para>video_display_format_t | |
| 1267 | − format</para> | |
| 1268 | −</entry><entry | |
| 1269 | − align="char"> | |
| 1270 | −<para>Selects the video format to be used.</para> | |
| 1271 | −</entry> | |
| 1272 | − </row></tbody></tgroup></informaltable> | |
| 1273 | −&return-value-dvb; | |
| 1274 | − | |
| 1275 | −</section><section id="VIDEO_STILLPICTURE" | |
| 1276 | −role="subsection"><title>VIDEO_STILLPICTURE</title> | |
| 1277 | −<para>DESCRIPTION | |
| 1278 | −</para> | |
| 1279 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1280 | − align="char"> | |
| 1281 | −<para>This ioctl call asks the Video Device to display a still picture (I-frame). The | |
| 1282 | − input data shall contain an I-frame. If the pointer is NULL, then the current | |
| 1283 | − displayed still picture is blanked.</para> | |
| 1284 | −</entry> | |
| 1285 | − </row></tbody></tgroup></informaltable> | |
| 1286 | −<para>SYNOPSIS | |
| 1287 | −</para> | |
| 1288 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1289 | − align="char"> | |
| 1290 | −<para>int ioctl(fd, int request = VIDEO_STILLPICTURE, | |
| 1291 | − struct video_still_picture ⋆sp);</para> | |
| 1292 | −</entry> | |
| 1293 | − </row></tbody></tgroup></informaltable> | |
| 1294 | −<para>PARAMETERS | |
| 1295 | −</para> | |
| 1296 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1297 | − align="char"> | |
| 1298 | −<para>int fd</para> | |
| 1299 | −</entry><entry | |
| 1300 | − align="char"> | |
| 1301 | −<para>File descriptor returned by a previous call to open().</para> | |
| 1302 | −</entry> | |
| 1303 | − </row><row><entry | |
| 1304 | − align="char"> | |
| 1305 | −<para>int request</para> | |
| 1306 | −</entry><entry | |
| 1307 | − align="char"> | |
| 1308 | −<para>Equals VIDEO_STILLPICTURE for this command.</para> | |
| 1309 | −</entry> | |
| 1310 | − </row><row><entry | |
| 1311 | − align="char"> | |
| 1312 | −<para>struct | |
| 1313 | − video_still_picture | |
| 1314 | − *sp</para> | |
| 1315 | −</entry><entry | |
| 1316 | − align="char"> | |
| 1317 | −<para>Pointer to a location where an I-frame and size is stored.</para> | |
| 1318 | −</entry> | |
| 1319 | − </row></tbody></tgroup></informaltable> | |
| 1320 | −&return-value-dvb; | |
| 1321 | − | |
| 1322 | −</section><section id="VIDEO_FAST_FORWARD" | |
| 1323 | −role="subsection"><title>VIDEO_FAST_FORWARD</title> | |
| 1324 | −<para>DESCRIPTION | |
| 1325 | −</para> | |
| 1326 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1327 | − align="char"> | |
| 1328 | −<para>This ioctl call asks the Video Device to skip decoding of N number of I-frames. | |
| 1329 | − This call can only be used if VIDEO_SOURCE_MEMORY is selected.</para> | |
| 1330 | −</entry> | |
| 1331 | − </row></tbody></tgroup></informaltable> | |
| 1332 | −<para>SYNOPSIS | |
| 1333 | −</para> | |
| 1334 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1335 | − align="char"> | |
| 1336 | −<para>int ioctl(fd, int request = VIDEO_FAST_FORWARD, int | |
| 1337 | − nFrames);</para> | |
| 1338 | −</entry> | |
| 1339 | − </row></tbody></tgroup></informaltable> | |
| 1340 | −<para>PARAMETERS | |
| 1341 | −</para> | |
| 1342 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1343 | − align="char"> | |
| 1344 | −<para>int fd</para> | |
| 1345 | −</entry><entry | |
| 1346 | − align="char"> | |
| 1347 | −<para>File descriptor returned by a previous call to open().</para> | |
| 1348 | −</entry> | |
| 1349 | − </row><row><entry | |
| 1350 | − align="char"> | |
| 1351 | −<para>int request</para> | |
| 1352 | −</entry><entry | |
| 1353 | − align="char"> | |
| 1354 | −<para>Equals VIDEO_FAST_FORWARD for this command.</para> | |
| 1355 | −</entry> | |
| 1356 | − </row><row><entry | |
| 1357 | − align="char"> | |
| 1358 | −<para>int nFrames</para> | |
| 1359 | −</entry><entry | |
| 1360 | − align="char"> | |
| 1361 | −<para>The number of frames to skip.</para> | |
| 1362 | −</entry> | |
| 1363 | − </row></tbody></tgroup></informaltable> | |
| 1364 | −&return-value-dvb; | |
| 1365 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1366 | − align="char"> | |
| 1367 | −<para>EPERM</para> | |
| 1368 | −</entry><entry | |
| 1369 | − align="char"> | |
| 1370 | −<para>Mode VIDEO_SOURCE_MEMORY not selected.</para> | |
| 1371 | −</entry> | |
| 1372 | − </row></tbody></tgroup></informaltable> | |
| 1373 | − | |
| 1374 | −</section><section id="VIDEO_SLOWMOTION" | |
| 1375 | −role="subsection"><title>VIDEO_SLOWMOTION</title> | |
| 1376 | −<para>DESCRIPTION | |
| 1377 | −</para> | |
| 1378 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1379 | − align="char"> | |
| 1380 | −<para>This ioctl call asks the video device to repeat decoding frames N number of | |
| 1381 | − times. This call can only be used if VIDEO_SOURCE_MEMORY is selected.</para> | |
| 1382 | −</entry> | |
| 1383 | − </row></tbody></tgroup></informaltable> | |
| 1384 | −<para>SYNOPSIS | |
| 1385 | −</para> | |
| 1386 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1387 | − align="char"> | |
| 1388 | −<para>int ioctl(fd, int request = VIDEO_SLOWMOTION, int | |
| 1389 | − nFrames);</para> | |
| 1390 | −</entry> | |
| 1391 | − </row></tbody></tgroup></informaltable> | |
| 1392 | −<para>PARAMETERS | |
| 1393 | −</para> | |
| 1394 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1395 | − align="char"> | |
| 1396 | −<para>int fd</para> | |
| 1397 | −</entry><entry | |
| 1398 | − align="char"> | |
| 1399 | −<para>File descriptor returned by a previous call to open().</para> | |
| 1400 | −</entry> | |
| 1401 | − </row><row><entry | |
| 1402 | − align="char"> | |
| 1403 | −<para>int request</para> | |
| 1404 | −</entry><entry | |
| 1405 | − align="char"> | |
| 1406 | −<para>Equals VIDEO_SLOWMOTION for this command.</para> | |
| 1407 | −</entry> | |
| 1408 | − </row><row><entry | |
| 1409 | − align="char"> | |
| 1410 | −<para>int nFrames</para> | |
| 1411 | −</entry><entry | |
| 1412 | − align="char"> | |
| 1413 | −<para>The number of times to repeat each frame.</para> | |
| 1414 | −</entry> | |
| 1415 | − </row></tbody></tgroup></informaltable> | |
| 1416 | −&return-value-dvb; | |
| 1417 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1418 | − align="char"> | |
| 1419 | −<para>EPERM</para> | |
| 1420 | −</entry><entry | |
| 1421 | − align="char"> | |
| 1422 | −<para>Mode VIDEO_SOURCE_MEMORY not selected.</para> | |
| 1423 | −</entry> | |
| 1424 | − </row></tbody></tgroup></informaltable> | |
| 1425 | − | |
| 1426 | −</section><section id="VIDEO_GET_CAPABILITIES" | |
| 1427 | −role="subsection"><title>VIDEO_GET_CAPABILITIES</title> | |
| 1428 | −<para>DESCRIPTION | |
| 1429 | −</para> | |
| 1430 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1431 | − align="char"> | |
| 1432 | −<para>This ioctl call asks the video device about its decoding capabilities. On success | |
| 1433 | − it returns and integer which has bits set according to the defines in section ??.</para> | |
| 1434 | −</entry> | |
| 1435 | − </row></tbody></tgroup></informaltable> | |
| 1436 | −<para>SYNOPSIS | |
| 1437 | −</para> | |
| 1438 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1439 | − align="char"> | |
| 1440 | −<para>int ioctl(fd, int request = VIDEO_GET_CAPABILITIES, | |
| 1441 | − unsigned int ⋆cap);</para> | |
| 1442 | −</entry> | |
| 1443 | − </row></tbody></tgroup></informaltable> | |
| 1444 | −<para>PARAMETERS | |
| 1445 | −</para> | |
| 1446 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1447 | − align="char"> | |
| 1448 | −<para>int fd</para> | |
| 1449 | −</entry><entry | |
| 1450 | − align="char"> | |
| 1451 | −<para>File descriptor returned by a previous call to open().</para> | |
| 1452 | −</entry> | |
| 1453 | − </row><row><entry | |
| 1454 | − align="char"> | |
| 1455 | −<para>int request</para> | |
| 1456 | −</entry><entry | |
| 1457 | − align="char"> | |
| 1458 | −<para>Equals VIDEO_GET_CAPABILITIES for this | |
| 1459 | − command.</para> | |
| 1460 | −</entry> | |
| 1461 | − </row><row><entry | |
| 1462 | − align="char"> | |
| 1463 | −<para>unsigned int *cap</para> | |
| 1464 | −</entry><entry | |
| 1465 | − align="char"> | |
| 1466 | −<para>Pointer to a location where to store the capability | |
| 1467 | − information.</para> | |
| 1468 | −</entry> | |
| 1469 | − </row></tbody></tgroup></informaltable> | |
| 1470 | −&return-value-dvb; | |
| 1471 | − | |
| 1472 | −</section><section id="VIDEO_SET_ID" | |
| 1473 | −role="subsection"><title>VIDEO_SET_ID</title> | |
| 1474 | −<para>DESCRIPTION | |
| 1475 | −</para> | |
| 1476 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1477 | − align="char"> | |
| 1478 | −<para>This ioctl selects which sub-stream is to be decoded if a program or system | |
| 1479 | − stream is sent to the video device.</para> | |
| 1480 | −</entry> | |
| 1481 | − </row></tbody></tgroup></informaltable> | |
| 1482 | −<para>SYNOPSIS | |
| 1483 | −</para> | |
| 1484 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1485 | − align="char"> | |
| 1486 | −<para>int ioctl(int fd, int request = VIDEO_SET_ID, int | |
| 1487 | − id);</para> | |
| 1488 | −</entry> | |
| 1489 | − </row></tbody></tgroup></informaltable> | |
| 1490 | −<para>PARAMETERS | |
| 1491 | −</para> | |
| 1492 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1493 | − align="char"> | |
| 1494 | −<para>int fd</para> | |
| 1495 | −</entry><entry | |
| 1496 | − align="char"> | |
| 1497 | −<para>File descriptor returned by a previous call to open().</para> | |
| 1498 | −</entry> | |
| 1499 | − </row><row><entry | |
| 1500 | − align="char"> | |
| 1501 | −<para>int request</para> | |
| 1502 | −</entry><entry | |
| 1503 | − align="char"> | |
| 1504 | −<para>Equals VIDEO_SET_ID for this command.</para> | |
| 1505 | −</entry> | |
| 1506 | − </row><row><entry | |
| 1507 | − align="char"> | |
| 1508 | −<para>int id</para> | |
| 1509 | −</entry><entry | |
| 1510 | − align="char"> | |
| 1511 | −<para>video sub-stream id</para> | |
| 1512 | −</entry> | |
| 1513 | − </row></tbody></tgroup></informaltable> | |
| 1514 | −&return-value-dvb; | |
| 1515 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1516 | − align="char"> | |
| 1517 | −<para>EINVAL</para> | |
| 1518 | −</entry><entry | |
| 1519 | − align="char"> | |
| 1520 | −<para>Invalid sub-stream id.</para> | |
| 1521 | −</entry> | |
| 1522 | − </row></tbody></tgroup></informaltable> | |
| 1523 | − | |
| 1524 | −</section><section id="VIDEO_CLEAR_BUFFER" | |
| 1525 | −role="subsection"><title>VIDEO_CLEAR_BUFFER</title> | |
| 1526 | −<para>DESCRIPTION | |
| 1527 | −</para> | |
| 1528 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1529 | − align="char"> | |
| 1530 | −<para>This ioctl call clears all video buffers in the driver and in the decoder hardware.</para> | |
| 1531 | −</entry> | |
| 1532 | − </row></tbody></tgroup></informaltable> | |
| 1533 | −<para>SYNOPSIS | |
| 1534 | −</para> | |
| 1535 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1536 | − align="char"> | |
| 1537 | −<para>int ioctl(fd, int request = VIDEO_CLEAR_BUFFER);</para> | |
| 1538 | −</entry> | |
| 1539 | − </row></tbody></tgroup></informaltable> | |
| 1540 | −<para>PARAMETERS | |
| 1541 | −</para> | |
| 1542 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1543 | − align="char"> | |
| 1544 | −<para>int fd</para> | |
| 1545 | −</entry><entry | |
| 1546 | − align="char"> | |
| 1547 | −<para>File descriptor returned by a previous call to open().</para> | |
| 1548 | −</entry> | |
| 1549 | − </row><row><entry | |
| 1550 | − align="char"> | |
| 1551 | −<para>int request</para> | |
| 1552 | −</entry><entry | |
| 1553 | − align="char"> | |
| 1554 | −<para>Equals VIDEO_CLEAR_BUFFER for this command.</para> | |
| 1555 | −</entry> | |
| 1556 | − </row></tbody></tgroup></informaltable> | |
| 1557 | −&return-value-dvb; | |
| 1558 | − | |
| 1559 | −</section><section id="VIDEO_SET_STREAMTYPE" | |
| 1560 | −role="subsection"><title>VIDEO_SET_STREAMTYPE</title> | |
| 1561 | −<para>DESCRIPTION | |
| 1562 | −</para> | |
| 1563 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1564 | − align="char"> | |
| 1565 | −<para>This ioctl tells the driver which kind of stream to expect being written to it. If | |
| 1566 | − this call is not used the default of video PES is used. Some drivers might not | |
| 1567 | − support this call and always expect PES.</para> | |
| 1568 | −</entry> | |
| 1569 | − </row></tbody></tgroup></informaltable> | |
| 1570 | −<para>SYNOPSIS | |
| 1571 | −</para> | |
| 1572 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1573 | − align="char"> | |
| 1574 | −<para>int ioctl(fd, int request = VIDEO_SET_STREAMTYPE, | |
| 1575 | − int type);</para> | |
| 1576 | −</entry> | |
| 1577 | − </row></tbody></tgroup></informaltable> | |
| 1578 | −<para>PARAMETERS | |
| 1579 | −</para> | |
| 1580 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1581 | − align="char"> | |
| 1582 | −<para>int fd</para> | |
| 1583 | −</entry><entry | |
| 1584 | − align="char"> | |
| 1585 | −<para>File descriptor returned by a previous call to open().</para> | |
| 1586 | −</entry> | |
| 1587 | − </row><row><entry | |
| 1588 | − align="char"> | |
| 1589 | −<para>int request</para> | |
| 1590 | −</entry><entry | |
| 1591 | − align="char"> | |
| 1592 | −<para>Equals VIDEO_SET_STREAMTYPE for this command.</para> | |
| 1593 | −</entry> | |
| 1594 | − </row><row><entry | |
| 1595 | − align="char"> | |
| 1596 | −<para>int type</para> | |
| 1597 | −</entry><entry | |
| 1598 | − align="char"> | |
| 1599 | −<para>stream type</para> | |
| 1600 | −</entry> | |
| 1601 | − </row></tbody></tgroup></informaltable> | |
| 1602 | −&return-value-dvb; | |
| 1603 | − | |
| 1604 | −</section><section id="VIDEO_SET_FORMAT" | |
| 1605 | −role="subsection"><title>VIDEO_SET_FORMAT</title> | |
| 1606 | −<para>DESCRIPTION | |
| 1607 | −</para> | |
| 1608 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1609 | − align="char"> | |
| 1610 | −<para>This ioctl sets the screen format (aspect ratio) of the connected output device | |
| 1611 | − (TV) so that the output of the decoder can be adjusted accordingly.</para> | |
| 1612 | −</entry> | |
| 1613 | − </row></tbody></tgroup></informaltable> | |
| 1614 | −<para>SYNOPSIS | |
| 1615 | −</para> | |
| 1616 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1617 | − align="char"> | |
| 1618 | −<para> int ioctl(fd, int request = VIDEO_SET_FORMAT, | |
| 1619 | − video_format_t format);</para> | |
| 1620 | −</entry> | |
| 1621 | − </row></tbody></tgroup></informaltable> | |
| 1622 | −<para>PARAMETERS | |
| 1623 | −</para> | |
| 1624 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1625 | − align="char"> | |
| 1626 | −<para>int fd</para> | |
| 1627 | −</entry><entry | |
| 1628 | − align="char"> | |
| 1629 | −<para>File descriptor returned by a previous call to open().</para> | |
| 1630 | −</entry> | |
| 1631 | − </row><row><entry | |
| 1632 | − align="char"> | |
| 1633 | −<para>int request</para> | |
| 1634 | −</entry><entry | |
| 1635 | − align="char"> | |
| 1636 | −<para>Equals VIDEO_SET_FORMAT for this command.</para> | |
| 1637 | −</entry> | |
| 1638 | − </row><row><entry | |
| 1639 | − align="char"> | |
| 1640 | −<para>video_format_t | |
| 1641 | − format</para> | |
| 1642 | −</entry><entry | |
| 1643 | − align="char"> | |
| 1644 | −<para>video format of TV as defined in section ??.</para> | |
| 1645 | −</entry> | |
| 1646 | − </row></tbody></tgroup></informaltable> | |
| 1647 | −&return-value-dvb; | |
| 1648 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1649 | − align="char"> | |
| 1650 | −<para>EINVAL</para> | |
| 1651 | −</entry><entry | |
| 1652 | − align="char"> | |
| 1653 | −<para>format is not a valid video format.</para> | |
| 1654 | −</entry> | |
| 1655 | − </row></tbody></tgroup></informaltable> | |
| 1656 | − | |
| 1657 | −</section><section id="VIDEO_SET_SYSTEM" | |
| 1658 | −role="subsection"><title>VIDEO_SET_SYSTEM</title> | |
| 1659 | −<para>DESCRIPTION | |
| 1660 | −</para> | |
| 1661 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1662 | − align="char"> | |
| 1663 | −<para>This ioctl sets the television output format. The format (see section ??) may | |
| 1664 | − vary from the color format of the displayed MPEG stream. If the hardware is | |
| 1665 | − not able to display the requested format the call will return an error.</para> | |
| 1666 | −</entry> | |
| 1667 | − </row></tbody></tgroup></informaltable> | |
| 1668 | −<para>SYNOPSIS | |
| 1669 | −</para> | |
| 1670 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1671 | − align="char"> | |
| 1672 | −<para> int ioctl(fd, int request = VIDEO_SET_SYSTEM , | |
| 1673 | − video_system_t system);</para> | |
| 1674 | −</entry> | |
| 1675 | − </row></tbody></tgroup></informaltable> | |
| 1676 | −<para>PARAMETERS | |
| 1677 | −</para> | |
| 1678 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1679 | − align="char"> | |
| 1680 | −<para>int fd</para> | |
| 1681 | −</entry><entry | |
| 1682 | − align="char"> | |
| 1683 | −<para>File descriptor returned by a previous call to open().</para> | |
| 1684 | −</entry> | |
| 1685 | − </row><row><entry | |
| 1686 | − align="char"> | |
| 1687 | −<para>int request</para> | |
| 1688 | −</entry><entry | |
| 1689 | − align="char"> | |
| 1690 | −<para>Equals VIDEO_SET_FORMAT for this command.</para> | |
| 1691 | −</entry> | |
| 1692 | − </row><row><entry | |
| 1693 | − align="char"> | |
| 1694 | −<para>video_system_t | |
| 1695 | − system</para> | |
| 1696 | −</entry><entry | |
| 1697 | − align="char"> | |
| 1698 | −<para>video system of TV output.</para> | |
| 1699 | −</entry> | |
| 1700 | − </row></tbody></tgroup></informaltable> | |
| 1701 | −&return-value-dvb; | |
| 1702 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1703 | − align="char"> | |
| 1704 | −<para>EINVAL</para> | |
| 1705 | −</entry><entry | |
| 1706 | − align="char"> | |
| 1707 | −<para>system is not a valid or supported video system.</para> | |
| 1708 | −</entry> | |
| 1709 | − </row></tbody></tgroup></informaltable> | |
| 1710 | − | |
| 1711 | −</section><section id="VIDEO_SET_HIGHLIGHT" | |
| 1712 | −role="subsection"><title>VIDEO_SET_HIGHLIGHT</title> | |
| 1713 | −<para>DESCRIPTION | |
| 1714 | −</para> | |
| 1715 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1716 | − align="char"> | |
| 1717 | −<para>This ioctl sets the SPU highlight information for the menu access of a DVD.</para> | |
| 1718 | −</entry> | |
| 1719 | − </row></tbody></tgroup></informaltable> | |
| 1720 | −<para>SYNOPSIS | |
| 1721 | −</para> | |
| 1722 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1723 | − align="char"> | |
| 1724 | −<para> int ioctl(fd, int request = VIDEO_SET_HIGHLIGHT | |
| 1725 | − ,video_highlight_t ⋆vhilite)</para> | |
| 1726 | −</entry> | |
| 1727 | − </row></tbody></tgroup></informaltable> | |
| 1728 | −<para>PARAMETERS | |
| 1729 | −</para> | |
| 1730 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1731 | − align="char"> | |
| 1732 | −<para>int fd</para> | |
| 1733 | −</entry><entry | |
| 1734 | − align="char"> | |
| 1735 | −<para>File descriptor returned by a previous call to open().</para> | |
| 1736 | −</entry> | |
| 1737 | − </row><row><entry | |
| 1738 | − align="char"> | |
| 1739 | −<para>int request</para> | |
| 1740 | −</entry><entry | |
| 1741 | − align="char"> | |
| 1742 | −<para>Equals VIDEO_SET_HIGHLIGHT for this command.</para> | |
| 1743 | −</entry> | |
| 1744 | − </row><row><entry | |
| 1745 | − align="char"> | |
| 1746 | −<para>video_highlight_t | |
| 1747 | − *vhilite</para> | |
| 1748 | −</entry><entry | |
| 1749 | − align="char"> | |
| 1750 | −<para>SPU Highlight information according to section ??.</para> | |
| 1751 | −</entry> | |
| 1752 | − </row></tbody></tgroup></informaltable> | |
| 1753 | −&return-value-dvb; | |
| 1754 | − | |
| 1755 | −</section><section id="VIDEO_SET_SPU" | |
| 1756 | −role="subsection"><title>VIDEO_SET_SPU</title> | |
| 1757 | −<para>DESCRIPTION | |
| 1758 | −</para> | |
| 1759 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1760 | − align="char"> | |
| 1761 | −<para>This ioctl activates or deactivates SPU decoding in a DVD input stream. It can | |
| 1762 | − only be used, if the driver is able to handle a DVD stream.</para> | |
| 1763 | −</entry> | |
| 1764 | − </row></tbody></tgroup></informaltable> | |
| 1765 | −<para>SYNOPSIS | |
| 1766 | −</para> | |
| 1767 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1768 | − align="char"> | |
| 1769 | −<para> int ioctl(fd, int request = VIDEO_SET_SPU , | |
| 1770 | − video_spu_t ⋆spu)</para> | |
| 1771 | −</entry> | |
| 1772 | − </row></tbody></tgroup></informaltable> | |
| 1773 | −<para>PARAMETERS | |
| 1774 | −</para> | |
| 1775 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1776 | − align="char"> | |
| 1777 | −<para>int fd</para> | |
| 1778 | −</entry><entry | |
| 1779 | − align="char"> | |
| 1780 | −<para>File descriptor returned by a previous call to open().</para> | |
| 1781 | −</entry> | |
| 1782 | − </row><row><entry | |
| 1783 | − align="char"> | |
| 1784 | −<para>int request</para> | |
| 1785 | −</entry><entry | |
| 1786 | − align="char"> | |
| 1787 | −<para>Equals VIDEO_SET_SPU for this command.</para> | |
| 1788 | −</entry> | |
| 1789 | − </row><row><entry | |
| 1790 | − align="char"> | |
| 1791 | −<para>video_spu_t *spu</para> | |
| 1792 | −</entry><entry | |
| 1793 | − align="char"> | |
| 1794 | −<para>SPU decoding (de)activation and subid setting according | |
| 1795 | − to section ??.</para> | |
| 1796 | −</entry> | |
| 1797 | − </row></tbody></tgroup></informaltable> | |
| 1798 | −&return-value-dvb; | |
| 1799 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1800 | − align="char"> | |
| 1801 | −<para>EINVAL</para> | |
| 1802 | −</entry><entry | |
| 1803 | − align="char"> | |
| 1804 | −<para>input is not a valid spu setting or driver cannot handle | |
| 1805 | − SPU.</para> | |
| 1806 | −</entry> | |
| 1807 | − </row></tbody></tgroup></informaltable> | |
| 1808 | − | |
| 1809 | −</section><section id="VIDEO_SET_SPU_PALETTE" | |
| 1810 | −role="subsection"><title>VIDEO_SET_SPU_PALETTE</title> | |
| 1811 | −<para>DESCRIPTION | |
| 1812 | −</para> | |
| 1813 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1814 | − align="char"> | |
| 1815 | −<para>This ioctl sets the SPU color palette.</para> | |
| 1816 | −</entry> | |
| 1817 | − </row></tbody></tgroup></informaltable> | |
| 1818 | −<para>SYNOPSIS | |
| 1819 | −</para> | |
| 1820 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1821 | − align="char"> | |
| 1822 | −<para> int ioctl(fd, int request = VIDEO_SET_SPU_PALETTE | |
| 1823 | − ,video_spu_palette_t ⋆palette )</para> | |
| 1824 | −</entry> | |
| 1825 | − </row></tbody></tgroup></informaltable> | |
| 1826 | −<para>PARAMETERS | |
| 1827 | −</para> | |
| 1828 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1829 | − align="char"> | |
| 1830 | −<para>int fd</para> | |
| 1831 | −</entry><entry | |
| 1832 | − align="char"> | |
| 1833 | −<para>File descriptor returned by a previous call to open().</para> | |
| 1834 | −</entry> | |
| 1835 | − </row><row><entry | |
| 1836 | − align="char"> | |
| 1837 | −<para>int request</para> | |
| 1838 | −</entry><entry | |
| 1839 | − align="char"> | |
| 1840 | −<para>Equals VIDEO_SET_SPU_PALETTE for this command.</para> | |
| 1841 | −</entry> | |
| 1842 | − </row><row><entry | |
| 1843 | − align="char"> | |
| 1844 | −<para>video_spu_palette_t | |
| 1845 | − *palette</para> | |
| 1846 | −</entry><entry | |
| 1847 | − align="char"> | |
| 1848 | −<para>SPU palette according to section ??.</para> | |
| 1849 | −</entry> | |
| 1850 | − </row></tbody></tgroup></informaltable> | |
| 1851 | −&return-value-dvb; | |
| 1852 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1853 | − align="char"> | |
| 1854 | −<para>EINVAL</para> | |
| 1855 | −</entry><entry | |
| 1856 | − align="char"> | |
| 1857 | −<para>input is not a valid palette or driver doesn’t handle SPU.</para> | |
| 1858 | −</entry> | |
| 1859 | − </row></tbody></tgroup></informaltable> | |
| 1860 | − | |
| 1861 | −</section><section id="VIDEO_GET_NAVI" | |
| 1862 | −role="subsection"><title>VIDEO_GET_NAVI</title> | |
| 1863 | −<para>DESCRIPTION | |
| 1864 | −</para> | |
| 1865 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1866 | − align="char"> | |
| 1867 | −<para>This ioctl returns navigational information from the DVD stream. This is | |
| 1868 | − especially needed if an encoded stream has to be decoded by the hardware.</para> | |
| 1869 | −</entry> | |
| 1870 | − </row></tbody></tgroup></informaltable> | |
| 1871 | −<para>SYNOPSIS | |
| 1872 | −</para> | |
| 1873 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1874 | − align="char"> | |
| 1875 | −<para> int ioctl(fd, int request = VIDEO_GET_NAVI , | |
| 1876 | − video_navi_pack_t ⋆navipack)</para> | |
| 1877 | −</entry> | |
| 1878 | − </row></tbody></tgroup></informaltable> | |
| 1879 | −<para>PARAMETERS | |
| 1880 | −</para> | |
| 1881 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1882 | − align="char"> | |
| 1883 | −<para>int fd</para> | |
| 1884 | −</entry><entry | |
| 1885 | − align="char"> | |
| 1886 | −<para>File descriptor returned by a previous call to open().</para> | |
| 1887 | −</entry> | |
| 1888 | − </row><row><entry | |
| 1889 | − align="char"> | |
| 1890 | −<para>int request</para> | |
| 1891 | −</entry><entry | |
| 1892 | − align="char"> | |
| 1893 | −<para>Equals VIDEO_GET_NAVI for this command.</para> | |
| 1894 | −</entry> | |
| 1895 | − </row><row><entry | |
| 1896 | − align="char"> | |
| 1897 | −<para>video_navi_pack_t | |
| 1898 | − *navipack</para> | |
| 1899 | −</entry><entry | |
| 1900 | − align="char"> | |
| 1901 | −<para>PCI or DSI pack (private stream 2) according to section | |
| 1902 | − ??.</para> | |
| 1903 | −</entry> | |
| 1904 | − </row></tbody></tgroup></informaltable> | |
| 1905 | −&return-value-dvb; | |
| 1906 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1907 | − align="char"> | |
| 1908 | −<para>EFAULT</para> | |
| 1909 | −</entry><entry | |
| 1910 | − align="char"> | |
| 1911 | −<para>driver is not able to return navigational information</para> | |
| 1912 | −</entry> | |
| 1913 | − </row></tbody></tgroup></informaltable> | |
| 1914 | − | |
| 1915 | −</section><section id="VIDEO_SET_ATTRIBUTES" | |
| 1916 | −role="subsection"><title>VIDEO_SET_ATTRIBUTES</title> | |
| 1917 | −<para>DESCRIPTION | |
| 1918 | −</para> | |
| 1919 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1920 | − align="char"> | |
| 1921 | −<para>This ioctl is intended for DVD playback and allows you to set certain | |
| 1922 | − information about the stream. Some hardware may not need this information, | |
| 1923 | − but the call also tells the hardware to prepare for DVD playback.</para> | |
| 1924 | −</entry> | |
| 1925 | − </row></tbody></tgroup></informaltable> | |
| 1926 | −<para>SYNOPSIS | |
| 1927 | −</para> | |
| 1928 | −<informaltable><tgroup cols="1"><tbody><row><entry | |
| 1929 | − align="char"> | |
| 1930 | −<para> int ioctl(fd, int request = VIDEO_SET_ATTRIBUTE | |
| 1931 | − ,video_attributes_t vattr)</para> | |
| 1932 | −</entry> | |
| 1933 | − </row></tbody></tgroup></informaltable> | |
| 1934 | −<para>PARAMETERS | |
| 1935 | −</para> | |
| 1936 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1937 | − align="char"> | |
| 1938 | −<para>int fd</para> | |
| 1939 | −</entry><entry | |
| 1940 | − align="char"> | |
| 1941 | −<para>File descriptor returned by a previous call to open().</para> | |
| 1942 | −</entry> | |
| 1943 | − </row><row><entry | |
| 1944 | − align="char"> | |
| 1945 | −<para>int request</para> | |
| 1946 | −</entry><entry | |
| 1947 | − align="char"> | |
| 1948 | −<para>Equals VIDEO_SET_ATTRIBUTE for this command.</para> | |
| 1949 | −</entry> | |
| 1950 | − </row><row><entry | |
| 1951 | − align="char"> | |
| 1952 | −<para>video_attributes_t | |
| 1953 | − vattr</para> | |
| 1954 | −</entry><entry | |
| 1955 | − align="char"> | |
| 1956 | −<para>video attributes according to section ??.</para> | |
| 1957 | −</entry> | |
| 1958 | − </row></tbody></tgroup></informaltable> | |
| 1959 | −&return-value-dvb; | |
| 1960 | −<informaltable><tgroup cols="2"><tbody><row><entry | |
| 1961 | − align="char"> | |
| 1962 | −<para>EINVAL</para> | |
| 1963 | −</entry><entry | |
| 1964 | − align="char"> | |
| 1965 | −<para>input is not a valid attribute setting.</para> | |
| 1966 | −</entry> | |
| 1967 | − </row></tbody></tgroup></informaltable> | |
| 1968 | − </section></section> | |
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| 11 | −//////////////////////////////////////////////////////////////////////////// | |
| 12 | −//////////////////////////////////////////////////////////////////////////// | |
| 13 | −//////////////////////////////////////////////////////////////////////////// | |
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| 4 | −</g><g transform="translate(-2140.9 -2186)" class="com.sun.star.drawing.RectangleShape"><path fill="#ff8080" d="m4453 10217h-2269v-1224h4537v1224h-2268z"/><path fill="none" d="m4453 10217h-2269v-1224h4537v1224h-2268z" stroke="#3465af"/><text class="TextShape"><tspan font-size="635px" font-family="'Times New Roman', serif" font-weight="400" class="TextParagraph"><tspan y="9821" x="2571" class="TextPosition"><tspan fill="#000000">Audio encoder</tspan></tspan></tspan></text> | |
| 5 | −</g><g transform="translate(-2140.9 -2468.2)" class="com.sun.star.drawing.RectangleShape"><path fill="#cfc" d="m15711 12832h-3810v-1281h7620v1281h-3810z"/><path fill="none" d="m15711 12832h-3810v-1281h7620v1281h-3810z" stroke="#3465af"/><text class="TextShape"><tspan font-size="635px" font-family="'Times New Roman', serif" font-weight="400" class="TextParagraph"><tspan y="12407" x="12377" class="TextPosition"><tspan fill="#000000">Button Key/IR input logic</tspan></tspan></tspan></text> | |
| 6 | −</g><g transform="translate(-2140.9 -2411.8)" class="com.sun.star.drawing.RectangleShape"><path fill="#cfe7f5" d="m14169 14572h-2268v-1412h4536v1412h-2268z"/><path fill="none" d="m14169 14572h-2268v-1412h4536v1412h-2268z" stroke="#3465af"/><text class="TextShape"><tspan font-size="635px" font-family="'Times New Roman', serif" font-weight="400" class="TextParagraph"><tspan y="14082" x="12882" class="TextPosition"><tspan fill="#000000">EEPROM</tspan></tspan></tspan></text> | |
| 7 | −</g><g transform="translate(-2140.9 -2186)" class="com.sun.star.drawing.RectangleShape"><path fill="#fc9" d="m5140 17662h-1563v-1715h3126v1715h-1563z"/><path fill="none" d="m5140 17662h-1563v-1715h3126v1715h-1563z" stroke="#3465af"/><text class="TextShape"><tspan font-size="635px" font-family="'Times New Roman', serif" font-weight="400" class="TextParagraph"><tspan y="17020" x="4276" class="TextPosition"><tspan fill="#000000">Sensor</tspan></tspan></tspan></text> | |
| 8 | −</g><g transform="translate(-2140.9 -2186)" class="com.sun.star.drawing.CustomShape"><path fill="#729fcf" d="m6719 8030 385-353v176h1167v-176l386 353-386 354v-177h-1167v177l-385-354z"/><path fill="none" d="m6719 8030 385-353v176h1167v-176l386 353-386 354v-177h-1167v177l-385-354z" stroke="#3465af"/></g><g transform="translate(-2140.9 -2186)" class="com.sun.star.drawing.CustomShape"><path fill="#729fcf" d="m6719 9612 385-353v176h1167v-176l386 353-386 354v-177h-1167v177l-385-354z"/><path fill="none" d="m6719 9612 385-353v176h1167v-176l386 353-386 354v-177h-1167v177l-385-354z" stroke="#3465af"/></g><g transform="translate(-2140.9 -2186)" class="com.sun.star.drawing.CustomShape"><path fill="#729fcf" d="m6721 11100 385-353v176h1166v-176l386 353-386 354v-177h-1166v177l-385-354z"/><path fill="none" d="m6721 11100 385-353v176h1166v-176l386 353-386 354v-177h-1166v177l-385-354z" stroke="#3465af"/></g><g transform="translate(-2140.9 -2411.8)" class="com.sun.star.drawing.CustomShape"><path fill="#729fcf" d="m9962 13854 385-353v176h1166v-176l386 353-386 354v-177h-1166v177l-385-354z"/><path fill="none" d="m9962 13854 385-353v176h1166v-176l386 353-386 354v-177h-1166v177l-385-354z" stroke="#3465af"/></g><g transform="translate(-2140.9 -2468.2)" class="com.sun.star.drawing.CustomShape"><path fill="#729fcf" d="m9962 12163 385-353v176h1166v-176l386 353-386 354v-177h-1166v177l-385-354z"/><path fill="none" d="m9962 12163 385-353v176h1166v-176l386 353-386 354v-177h-1166v177l-385-354z" stroke="#3465af"/></g><g transform="translate(-2140.9 -2186)" class="com.sun.star.drawing.CustomShape"><path fill="#729fcf" d="m9962 17158 670-353v176h2028v-176l671 353-671 354v-177h-2028v177l-670-354z"/><path fill="none" d="m9962 17158 670-353v176h2028v-176l671 353-671 354v-177h-2028v177l-670-354z" stroke="#3465af"/></g><g transform="matrix(0 .83339 -1.0005 0 30268 -5276.3)" class="com.sun.star.drawing.CustomShape"><path fill="#729fcf" d="m23229 12779 1009-978 1009 978h-505v2959h505l-1009 979-1009-979h504v-2959h-504z"/><path fill="none" d="m23229 12779 1009-978 1009 978h-505v2959h505l-1009 979-1009-979h504v-2959h-504z" stroke="#3465af"/></g><g transform="translate(-9973.6 -666.6)" class="com.sun.star.drawing.TextShape"><text class="TextShape"><tspan font-size="706px" font-family="'Times New Roman', serif" font-weight="400" class="TextParagraph"><tspan y="15832" x="24341" class="TextPosition" transform="matrix(0,-1,1,0,8509,40173)"><tspan fill="#000000">System Bus</tspan></tspan></tspan></text> | |
| 9 | −</g><g transform="translate(-2140.9 -2186)" class="com.sun.star.drawing.RectangleShape"><path fill="#cff" d="m13151 9262h-1250v-875h2499v875h-1249z"/><path fill="none" d="m13151 9262h-1250v-875h2499v875h-1249z" stroke="#3465af"/><text class="TextShape"><tspan font-size="635px" font-family="'Times New Roman', serif" font-weight="400" class="TextParagraph"><tspan y="9040" x="12215" class="TextPosition"><tspan fill="#000000">Demux</tspan></tspan></tspan></text> | |
| 10 | −</g><g transform="translate(-2140.9 -2186)" class="com.sun.star.drawing.CustomShape"><path fill="#729fcf" d="m9996 8765 373-357v178h1130v-178l374 357-374 358v-179h-1130v179l-373-358z"/><path fill="none" d="m9996 8765 373-357v178h1130v-178l374 357-374 358v-179h-1130v179l-373-358z" stroke="#3465af"/></g><g transform="translate(-2140.9 -2186)" class="com.sun.star.drawing.CustomShape"><path fill="#729fcf" d="m9996 7378 373-358v179h1130v-179l374 358-374 358v-179h-1130v179l-373-358z"/><path fill="none" d="m9996 7378 373-358v179h1130v-179l374 358-374 358v-179h-1130v179l-373-358z" stroke="#3465af"/></g><g transform="translate(-2140.9 -2186)" class="com.sun.star.drawing.RectangleShape"><path fill="#cff" d="m16322 7992h-4421v-1270h8841v1270h-4420z"/><path fill="none" d="m16322 7992h-4421v-1270h8841v1270h-4420z" stroke="#3465af"/><text class="TextShape"><tspan font-size="635px" font-family="'Times New Roman', serif" font-weight="400" class="TextParagraph"><tspan y="7573" x="12786" class="TextPosition"><tspan fill="#000000">Conditional Access Module</tspan></tspan></tspan></text> | |
| 11 | −</g><g transform="translate(-2140.9 -2186)" class="com.sun.star.drawing.RectangleShape"><path fill="#ff8080" d="m4445 13287h-2269v-1224h4537v1224h-2268z"/><path fill="none" d="m4445 13287h-2269v-1224h4537v1224h-2268z" stroke="#3465af"/><text class="TextShape"><tspan font-size="635px" font-family="'Times New Roman', serif" font-weight="400" class="TextParagraph"><tspan y="12891" x="2601" class="TextPosition"><tspan fill="#000000">Video encoder</tspan></tspan></tspan></text> | |
| 12 | −</g><g transform="translate(-2140.9 -2186)" class="com.sun.star.drawing.CustomShape"><path fill="#729fcf" d="m6721 12634 385-353v176h1166v-176l386 353-386 354v-177h-1166v177l-385-354z"/><path fill="none" d="m6721 12634 385-353v176h1166v-176l386 353-386 354v-177h-1166v177l-385-354z" stroke="#3465af"/></g><g transform="translate(-2140.9 -2186)" class="com.sun.star.drawing.CustomShape"><path fill="#729fcf" d="m20791 7545 385-353v176h1166v-176l386 353-386 354v-177h-1166v177l-385-354z"/><path fill="none" d="m20791 7545 385-353v176h1166v-176l386 353-386 354v-177h-1166v177l-385-354z" stroke="#3465af"/></g><g transform="translate(-2028 -2186)" class="com.sun.star.drawing.TextShape"><text class="TextShape"><tspan font-size="635px" font-family="'Times New Roman', serif" font-weight="400" class="TextParagraph"><tspan y="14478" x="1990" class="TextPosition"><tspan fill="#000000">Radio / Analog TV</tspan></tspan></tspan></text> | |
| 13 | −</g><g transform="translate(-2140.9 -2186)" class="com.sun.star.drawing.TextShape"><text class="TextShape"><tspan font-size="635px" font-family="'Times New Roman', serif" font-weight="700" class="TextParagraph"><tspan y="10724" x="14956" class="TextPosition"><tspan fill="#000000">Digital TV</tspan></tspan></tspan></text> | |
| 14 | −</g><g transform="translate(-8970.5 -1395.8)" class="com.sun.star.drawing.TextShape"><text class="TextShape"><tspan font-size="494px" font-family="'Times New Roman', serif" font-weight="400" class="TextParagraph"><tspan y="19167" x="14724" class="TextPosition"><tspan fill="#000000">PS.: picture is not complete: other blocks may be present</tspan></tspan></tspan></text> | |
| 15 | −</g><g transform="translate(-2140.9 -2186)" class="com.sun.star.drawing.TextShape"><text class="TextShape"><tspan font-size="635px" font-family="'Times New Roman', serif" font-weight="400" class="TextParagraph"><tspan y="18561" x="4199" class="TextPosition"><tspan fill="#000000">Webcam</tspan></tspan></tspan></text> | |
| 16 | −</g><g transform="translate(-2140.9 -2468.2)" class="com.sun.star.drawing.RectangleShape"><path fill="#f90" d="m14552 16372h-2650v-1412h5299v1412h-2649z"/><path fill="none" d="m14552 16372h-2650v-1412h5299v1412h-2649z" stroke="#3465af"/><text class="TextShape"><tspan font-size="635px" font-family="'Times New Roman', serif" font-weight="400" class="TextParagraph"><tspan y="15882" x="12265" class="TextPosition"><tspan fill="#000000">Processing blocks</tspan></tspan></tspan></text> | |
| 17 | −</g><g transform="translate(-2140.9 -2468.2)" class="com.sun.star.drawing.CustomShape"><path fill="#729fcf" d="m9962 15654 385-353v176h1166v-176l386 353-386 354v-177h-1166v177l-385-354z"/><path fill="none" d="m9962 15654 385-353v176h1166v-176l386 353-386 354v-177h-1166v177l-385-354z" stroke="#3465af"/></g><g transform="translate(-2140.9 -2186)" class="com.sun.star.drawing.CustomShape"><path fill="#729fcf" d="m6702 16954 397-353v176h1201v-176l398 353-398 354v-177h-1201v177l-397-354z"/><path fill="none" d="m6702 16954 397-353v176h1201v-176l398 353-398 354v-177h-1201v177l-397-354z" stroke="#3465af"/></g><g transform="translate(-2479.5 -2186)" class="com.sun.star.drawing.TextShape"><text class="TextShape"><tspan font-size="635px" font-family="'Times New Roman', serif" font-weight="400" class="TextParagraph"><tspan y="8792" x="22850" class="TextPosition"><tspan fill="#000000">Smartcard</tspan></tspan></tspan></text> | |
| 18 | −</g><g transform="matrix(1.0048 0 0 1 -2207.4 -2186)" class="com.sun.star.drawing.CustomShape"><path fill="#fcf" d="m2766 2600c-333 0-666 333-666 666v2668c0 333 333 666 666 666h18368c333 0 667-333 667-666v-2668c0-333-334-666-667-666h-18368z"/></g><g transform="translate(-2140.9 -2186)" class="com.sun.star.drawing.RectangleShape"><path fill="#ff8080" d="m5121 5155h-1614v-1816h3227v1816h-1613z"/><path fill="none" d="m5121 5155h-1614v-1816h3227v1816h-1613z" stroke="#3465af"/><text font-size="635px" font-family="'Times New Roman', serif" font-weight="400" class="TextShape"><tspan class="TextParagraph"><tspan y="4111" x="4374" class="TextPosition"><tspan fill="#000000">Tuner</tspan></tspan></tspan><tspan class="TextParagraph"><tspan y="4814" x="4151" class="TextPosition"><tspan fill="#000000">FM/TV</tspan></tspan></tspan></text> | |
| 19 | −</g><g transform="translate(-2140.9 -2186)" class="com.sun.star.drawing.CustomShape"><path fill="#ff8080" d="m2902 3702c0 111 40 202 88 202h530c48 0 89-91 89-202 0-110-41-202-89-202h-530c-48 0-88 92-88 202z"/><path fill="none" d="m2902 3702c0 111 40 202 88 202h530c48 0 89-91 89-202 0-110-41-202-89-202h-530c-48 0-88 92-88 202z" stroke="#3465af"/><path fill="#ffb3b3" d="m2902 3702c0 111 40 202 88 202s88-91 88-202c0-110-40-202-88-202s-88 92-88 202z"/><path fill="none" d="m2902 3702c0 111 40 202 88 202s88-91 88-202c0-110-40-202-88-202s-88 92-88 202z" stroke="#3465af"/></g><g transform="translate(-2140.9 -2186)" class="com.sun.star.drawing.CustomShape"><path fill="#ff8080" d="m2903 4267c0 110 40 202 88 202h530c48 0 89-92 89-202s-41-203-89-203h-530c-48 0-88 93-88 203z"/><path fill="none" d="m2903 4267c0 110 40 202 88 202h530c48 0 89-92 89-202s-41-203-89-203h-530c-48 0-88 93-88 203z" stroke="#3465af"/><path fill="#ffb3b3" d="m2903 4267c0 110 40 202 88 202s88-92 88-202-40-203-88-203-88 93-88 203z"/><path fill="none" d="m2903 4267c0 110 40 202 88 202s88-92 88-202-40-203-88-203-88 93-88 203z" stroke="#3465af"/></g><g transform="translate(-2140.9 -2186)" class="com.sun.star.drawing.CustomShape"><path fill="#729fcf" d="m6719 4196 385-353v176h1167v-176l386 353-386 354v-177h-1167v177l-385-354z"/><path fill="none" d="m6719 4196 385-353v176h1167v-176l386 353-386 354v-177h-1167v177l-385-354z" stroke="#3465af"/></g><g transform="translate(-2140.9 -2186)" class="com.sun.star.drawing.CustomShape"><path fill="#729fcf" d="m9979 4150 402-368v184h1217v-184l403 368-403 369v-185h-1217v185l-402-369z"/><path fill="none" d="m9979 4150 402-368v184h1217v-184l403 368-403 369v-185h-1217v185l-402-369z" stroke="#3465af"/></g><g transform="translate(-2140.9 -2186)" class="com.sun.star.drawing.RectangleShape"><path fill="#cff" d="m16500 6189h-4500v-1389h9e3v1389h-4500z"/><path fill="none" d="m16500 6189h-4500v-1389h9e3v1389h-4500z" stroke="#3465af"/><text class="TextShape"><tspan font-size="635px" font-family="'Times New Roman', serif" font-weight="400" class="TextParagraph"><tspan y="5710" x="12051" class="TextPosition"><tspan fill="#000000">Satellite Equipment Control (SEC)</tspan></tspan></tspan></text> | |
| 20 | −</g><g transform="translate(-2140.9 -2186)" class="com.sun.star.drawing.CustomShape"><path fill="#cff" d="m13400 4600h-1400v-1e3h2800v1e3h-1400z"/><path fill="none" d="m13400 4600h-1400v-1e3h2800v1e3h-1400z" stroke="#3465af"/><text class="TextShape"><tspan font-size="635px" font-family="'Times New Roman', serif" font-weight="400" class="TextParagraph"><tspan y="4316" x="12465" class="TextPosition"><tspan fill="#000000">Demod</tspan></tspan></tspan></text> | |
| 21 | −</g><g transform="translate(-2140.9 -2186)" class="com.sun.star.drawing.CustomShape"><path fill="#729fcf" d="m9979 5451 402-368v184h1217v-184l403 368-403 369v-185h-1217v185l-402-369z"/><path fill="none" d="m9979 5451 402-368v184h1217v-184l403 368-403 369v-185h-1217v185l-402-369z" stroke="#3465af"/></g><path fill="#ff9" d="m7855.1 9099v7302h-1270v-14605h1270v7303z"/><path fill="none" d="m7855.1 9099v7302h-1270v-14605h1270v7303z" stroke="#3465af"/><text y="-6640.4663" x="-20770.572" transform="rotate(-90)" class="TextShape"><tspan font-size="635px" font-family="'Times New Roman', serif" font-weight="400" class="TextParagraph"><tspan y="7409.5396" x="-11193.634" class="TextPosition" transform="matrix(0,-1,1,0,-4473,23627)"><tspan fill="#000000">I2C Bus (control bus)</tspan></tspan></tspan></text> | |
| 22 | −<g transform="translate(-2197.3 -2186)" class="com.sun.star.drawing.TextShape"><text class="TextShape"><tspan font-size="635px" font-family="'Times New Roman', serif" font-weight="400" class="TextParagraph"><tspan y="3278" x="9391" class="TextPosition"><tspan fill="#000000">Digital TV Frontend</tspan></tspan></tspan></text> | |
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| @@ -1 +0,0 @@ | ||
| 1 | −!*.xml | |
| @@ -1,381 +0,0 @@ | ||
| 1 | − <bibliography> | |
| 2 | − <title>References</title> | |
| 3 | − | |
| 4 | − <biblioentry id="cea608"> | |
| 5 | − <abbrev>CEA 608-E</abbrev> | |
| 6 | − <authorgroup> | |
| 7 | − <corpauthor>Consumer Electronics Association (<ulink | |
| 8 | −url="http://www.ce.org">http://www.ce.org</ulink>)</corpauthor> | |
| 9 | − </authorgroup> | |
| 10 | − <title>CEA-608-E R-2014 "Line 21 Data Services"</title> | |
| 11 | − </biblioentry> | |
| 12 | − | |
| 13 | − <biblioentry id="en300294"> | |
| 14 | − <abbrev>EN 300 294</abbrev> | |
| 15 | − <authorgroup> | |
| 16 | − <corpauthor>European Telecommunication Standards Institute | |
| 17 | −(<ulink url="http://www.etsi.org">http://www.etsi.org</ulink>)</corpauthor> | |
| 18 | − </authorgroup> | |
| 19 | − <title>EN 300 294 "625-line television Wide Screen Signalling | |
| 20 | −(WSS)"</title> | |
| 21 | − </biblioentry> | |
| 22 | − | |
| 23 | − <biblioentry id="ets300231"> | |
| 24 | − <abbrev>ETS 300 231</abbrev> | |
| 25 | − <authorgroup> | |
| 26 | − <corpauthor>European Telecommunication Standards Institute | |
| 27 | −(<ulink | |
| 28 | −url="http://www.etsi.org">http://www.etsi.org</ulink>)</corpauthor> | |
| 29 | − </authorgroup> | |
| 30 | − <title>ETS 300 231 "Specification of the domestic video | |
| 31 | −Programme Delivery Control system (PDC)"</title> | |
| 32 | − </biblioentry> | |
| 33 | − | |
| 34 | − <biblioentry id="ets300706"> | |
| 35 | − <abbrev>ETS 300 706</abbrev> | |
| 36 | − <authorgroup> | |
| 37 | − <corpauthor>European Telecommunication Standards Institute | |
| 38 | −(<ulink url="http://www.etsi.org">http://www.etsi.org</ulink>)</corpauthor> | |
| 39 | − </authorgroup> | |
| 40 | − <title>ETS 300 706 "Enhanced Teletext specification"</title> | |
| 41 | − </biblioentry> | |
| 42 | − | |
| 43 | − <biblioentry id="mpeg2part1"> | |
| 44 | − <abbrev>ISO 13818-1</abbrev> | |
| 45 | − <authorgroup> | |
| 46 | − <corpauthor>International Telecommunication Union (<ulink | |
| 47 | −url="http://www.itu.ch">http://www.itu.ch</ulink>), International | |
| 48 | −Organisation for Standardisation (<ulink | |
| 49 | −url="http://www.iso.ch">http://www.iso.ch</ulink>)</corpauthor> | |
| 50 | − </authorgroup> | |
| 51 | − <title>ITU-T Rec. H.222.0 | ISO/IEC 13818-1 "Information | |
| 52 | −technology — Generic coding of moving pictures and associated | |
| 53 | −audio information: Systems"</title> | |
| 54 | − </biblioentry> | |
| 55 | − | |
| 56 | − <biblioentry id="mpeg2part2"> | |
| 57 | − <abbrev>ISO 13818-2</abbrev> | |
| 58 | − <authorgroup> | |
| 59 | − <corpauthor>International Telecommunication Union (<ulink | |
| 60 | −url="http://www.itu.ch">http://www.itu.ch</ulink>), International | |
| 61 | −Organisation for Standardisation (<ulink | |
| 62 | −url="http://www.iso.ch">http://www.iso.ch</ulink>)</corpauthor> | |
| 63 | − </authorgroup> | |
| 64 | − <title>ITU-T Rec. H.262 | ISO/IEC 13818-2 "Information | |
| 65 | −technology — Generic coding of moving pictures and associated | |
| 66 | −audio information: Video"</title> | |
| 67 | − </biblioentry> | |
| 68 | − | |
| 69 | − <biblioentry id="itu470"> | |
| 70 | − <abbrev>ITU BT.470</abbrev> | |
| 71 | − <authorgroup> | |
| 72 | − <corpauthor>International Telecommunication Union (<ulink | |
| 73 | −url="http://www.itu.ch">http://www.itu.ch</ulink>)</corpauthor> | |
| 74 | − </authorgroup> | |
| 75 | − <title>ITU-R Recommendation BT.470-6 "Conventional Television | |
| 76 | −Systems"</title> | |
| 77 | − </biblioentry> | |
| 78 | − | |
| 79 | − <biblioentry id="itu601"> | |
| 80 | − <abbrev>ITU BT.601</abbrev> | |
| 81 | − <authorgroup> | |
| 82 | − <corpauthor>International Telecommunication Union (<ulink | |
| 83 | −url="http://www.itu.ch">http://www.itu.ch</ulink>)</corpauthor> | |
| 84 | − </authorgroup> | |
| 85 | − <title>ITU-R Recommendation BT.601-5 "Studio Encoding Parameters | |
| 86 | −of Digital Television for Standard 4:3 and Wide-Screen 16:9 Aspect | |
| 87 | −Ratios"</title> | |
| 88 | − </biblioentry> | |
| 89 | − | |
| 90 | − <biblioentry id="itu653"> | |
| 91 | − <abbrev>ITU BT.653</abbrev> | |
| 92 | − <authorgroup> | |
| 93 | − <corpauthor>International Telecommunication Union (<ulink | |
| 94 | −url="http://www.itu.ch">http://www.itu.ch</ulink>)</corpauthor> | |
| 95 | − </authorgroup> | |
| 96 | − <title>ITU-R Recommendation BT.653-3 "Teletext systems"</title> | |
| 97 | − </biblioentry> | |
| 98 | − | |
| 99 | − <biblioentry id="itu709"> | |
| 100 | − <abbrev>ITU BT.709</abbrev> | |
| 101 | − <authorgroup> | |
| 102 | − <corpauthor>International Telecommunication Union (<ulink | |
| 103 | −url="http://www.itu.ch">http://www.itu.ch</ulink>)</corpauthor> | |
| 104 | − </authorgroup> | |
| 105 | − <title>ITU-R Recommendation BT.709-5 "Parameter values for the | |
| 106 | −HDTV standards for production and international programme | |
| 107 | −exchange"</title> | |
| 108 | − </biblioentry> | |
| 109 | − | |
| 110 | − <biblioentry id="itu1119"> | |
| 111 | − <abbrev>ITU BT.1119</abbrev> | |
| 112 | − <authorgroup> | |
| 113 | − <corpauthor>International Telecommunication Union (<ulink | |
| 114 | −url="http://www.itu.ch">http://www.itu.ch</ulink>)</corpauthor> | |
| 115 | − </authorgroup> | |
| 116 | − <title>ITU-R Recommendation BT.1119 "625-line | |
| 117 | −television Wide Screen Signalling (WSS)"</title> | |
| 118 | − </biblioentry> | |
| 119 | − | |
| 120 | − <biblioentry id="jfif"> | |
| 121 | − <abbrev>JFIF</abbrev> | |
| 122 | − <authorgroup> | |
| 123 | − <corpauthor>Independent JPEG Group (<ulink | |
| 124 | −url="http://www.ijg.org">http://www.ijg.org</ulink>)</corpauthor> | |
| 125 | − </authorgroup> | |
| 126 | − <title>JPEG File Interchange Format</title> | |
| 127 | − <subtitle>Version 1.02</subtitle> | |
| 128 | − </biblioentry> | |
| 129 | − | |
| 130 | − <biblioentry id="itu-t81"> | |
| 131 | − <abbrev>ITU-T.81</abbrev> | |
| 132 | − <authorgroup> | |
| 133 | − <corpauthor>International Telecommunication Union | |
| 134 | −(<ulink url="http://www.itu.int">http://www.itu.int</ulink>)</corpauthor> | |
| 135 | − </authorgroup> | |
| 136 | − <title>ITU-T Recommendation T.81 | |
| 137 | −"Information Technology — Digital Compression and Coding of Continous-Tone | |
| 138 | −Still Images — Requirements and Guidelines"</title> | |
| 139 | − </biblioentry> | |
| 140 | − | |
| 141 | − <biblioentry id="w3c-jpeg-jfif"> | |
| 142 | − <abbrev>W3C JPEG JFIF</abbrev> | |
| 143 | − <authorgroup> | |
| 144 | − <corpauthor>The World Wide Web Consortium (<ulink | |
| 145 | −url="http://www.w3.org/Graphics/JPEG">http://www.w3.org</ulink>)</corpauthor> | |
| 146 | − </authorgroup> | |
| 147 | − <title>JPEG JFIF</title> | |
| 148 | − </biblioentry> | |
| 149 | − | |
| 150 | − <biblioentry id="smpte12m"> | |
| 151 | − <abbrev>SMPTE 12M</abbrev> | |
| 152 | − <authorgroup> | |
| 153 | − <corpauthor>Society of Motion Picture and Television Engineers | |
| 154 | −(<ulink url="http://www.smpte.org">http://www.smpte.org</ulink>)</corpauthor> | |
| 155 | − </authorgroup> | |
| 156 | − <title>SMPTE 12M-1999 "Television, Audio and Film - Time and | |
| 157 | −Control Code"</title> | |
| 158 | − </biblioentry> | |
| 159 | − | |
| 160 | − <biblioentry id="smpte170m"> | |
| 161 | − <abbrev>SMPTE 170M</abbrev> | |
| 162 | − <authorgroup> | |
| 163 | − <corpauthor>Society of Motion Picture and Television Engineers | |
| 164 | −(<ulink url="http://www.smpte.org">http://www.smpte.org</ulink>)</corpauthor> | |
| 165 | − </authorgroup> | |
| 166 | − <title>SMPTE 170M-1999 "Television - Composite Analog Video | |
| 167 | −Signal - NTSC for Studio Applications"</title> | |
| 168 | − </biblioentry> | |
| 169 | − | |
| 170 | − <biblioentry id="smpte240m"> | |
| 171 | − <abbrev>SMPTE 240M</abbrev> | |
| 172 | − <authorgroup> | |
| 173 | − <corpauthor>Society of Motion Picture and Television Engineers | |
| 174 | −(<ulink url="http://www.smpte.org">http://www.smpte.org</ulink>)</corpauthor> | |
| 175 | − </authorgroup> | |
| 176 | − <title>SMPTE 240M-1999 "Television - Signal Parameters - | |
| 177 | −1125-Line High-Definition Production"</title> | |
| 178 | − </biblioentry> | |
| 179 | − | |
| 180 | − <biblioentry id="smpte431"> | |
| 181 | − <abbrev>SMPTE RP 431-2</abbrev> | |
| 182 | − <authorgroup> | |
| 183 | − <corpauthor>Society of Motion Picture and Television Engineers | |
| 184 | −(<ulink url="http://www.smpte.org">http://www.smpte.org</ulink>)</corpauthor> | |
| 185 | − </authorgroup> | |
| 186 | − <title>SMPTE RP 431-2:2011 "D-Cinema Quality - Reference Projector and Environment"</title> | |
| 187 | − </biblioentry> | |
| 188 | − | |
| 189 | − <biblioentry id="smpte2084"> | |
| 190 | − <abbrev>SMPTE ST 2084</abbrev> | |
| 191 | − <authorgroup> | |
| 192 | − <corpauthor>Society of Motion Picture and Television Engineers | |
| 193 | −(<ulink url="http://www.smpte.org">http://www.smpte.org</ulink>)</corpauthor> | |
| 194 | − </authorgroup> | |
| 195 | − <title>SMPTE ST 2084:2014 "High Dynamic Range Electro-Optical Transfer Function of Master Reference Displays"</title> | |
| 196 | − </biblioentry> | |
| 197 | − | |
| 198 | − <biblioentry id="srgb"> | |
| 199 | − <abbrev>sRGB</abbrev> | |
| 200 | − <authorgroup> | |
| 201 | − <corpauthor>International Electrotechnical Commission | |
| 202 | −(<ulink url="http://www.iec.ch">http://www.iec.ch</ulink>)</corpauthor> | |
| 203 | − </authorgroup> | |
| 204 | − <title>IEC 61966-2-1 ed1.0 "Multimedia systems and equipment - Colour measurement | |
| 205 | −and management - Part 2-1: Colour management - Default RGB colour space - sRGB"</title> | |
| 206 | − </biblioentry> | |
| 207 | − | |
| 208 | − <biblioentry id="sycc"> | |
| 209 | − <abbrev>sYCC</abbrev> | |
| 210 | − <authorgroup> | |
| 211 | − <corpauthor>International Electrotechnical Commission | |
| 212 | −(<ulink url="http://www.iec.ch">http://www.iec.ch</ulink>)</corpauthor> | |
| 213 | − </authorgroup> | |
| 214 | − <title>IEC 61966-2-1-am1 ed1.0 "Amendment 1 - Multimedia systems and equipment - Colour measurement | |
| 215 | −and management - Part 2-1: Colour management - Default RGB colour space - sRGB"</title> | |
| 216 | − </biblioentry> | |
| 217 | − | |
| 218 | − <biblioentry id="xvycc"> | |
| 219 | − <abbrev>xvYCC</abbrev> | |
| 220 | − <authorgroup> | |
| 221 | − <corpauthor>International Electrotechnical Commission | |
| 222 | −(<ulink url="http://www.iec.ch">http://www.iec.ch</ulink>)</corpauthor> | |
| 223 | − </authorgroup> | |
| 224 | − <title>IEC 61966-2-4 ed1.0 "Multimedia systems and equipment - Colour measurement | |
| 225 | −and management - Part 2-4: Colour management - Extended-gamut YCC colour space for video | |
| 226 | −applications - xvYCC"</title> | |
| 227 | − </biblioentry> | |
| 228 | − | |
| 229 | − <biblioentry id="adobergb"> | |
| 230 | − <abbrev>AdobeRGB</abbrev> | |
| 231 | − <authorgroup> | |
| 232 | − <corpauthor>Adobe Systems Incorporated (<ulink url="http://www.adobe.com">http://www.adobe.com</ulink>)</corpauthor> | |
| 233 | − </authorgroup> | |
| 234 | − <title>Adobe© RGB (1998) Color Image Encoding Version 2005-05</title> | |
| 235 | − </biblioentry> | |
| 236 | − | |
| 237 | − <biblioentry id="oprgb"> | |
| 238 | − <abbrev>opRGB</abbrev> | |
| 239 | − <authorgroup> | |
| 240 | − <corpauthor>International Electrotechnical Commission | |
| 241 | −(<ulink url="http://www.iec.ch">http://www.iec.ch</ulink>)</corpauthor> | |
| 242 | − </authorgroup> | |
| 243 | − <title>IEC 61966-2-5 "Multimedia systems and equipment - Colour measurement | |
| 244 | −and management - Part 2-5: Colour management - Optional RGB colour space - opRGB"</title> | |
| 245 | − </biblioentry> | |
| 246 | − | |
| 247 | − <biblioentry id="itu2020"> | |
| 248 | − <abbrev>ITU BT.2020</abbrev> | |
| 249 | − <authorgroup> | |
| 250 | − <corpauthor>International Telecommunication Union (<ulink | |
| 251 | −url="http://www.itu.ch">http://www.itu.ch</ulink>)</corpauthor> | |
| 252 | − </authorgroup> | |
| 253 | − <title>ITU-R Recommendation BT.2020 (08/2012) "Parameter values for ultra-high | |
| 254 | −definition television systems for production and international programme exchange" | |
| 255 | −</title> | |
| 256 | − </biblioentry> | |
| 257 | − | |
| 258 | − <biblioentry id="tech3213"> | |
| 259 | − <abbrev>EBU Tech 3213</abbrev> | |
| 260 | − <authorgroup> | |
| 261 | − <corpauthor>European Broadcast Union (<ulink | |
| 262 | −url="http://www.ebu.ch">http://www.ebu.ch</ulink>)</corpauthor> | |
| 263 | − </authorgroup> | |
| 264 | − <title>E.B.U. Standard for Chromaticity Tolerances for Studio Monitors"</title> | |
| 265 | − </biblioentry> | |
| 266 | − | |
| 267 | − <biblioentry id="iec62106"> | |
| 268 | − <abbrev>IEC 62106</abbrev> | |
| 269 | − <authorgroup> | |
| 270 | − <corpauthor>International Electrotechnical Commission | |
| 271 | −(<ulink url="http://www.iec.ch">http://www.iec.ch</ulink>)</corpauthor> | |
| 272 | − </authorgroup> | |
| 273 | − <title>Specification of the radio data system (RDS) for VHF/FM sound broadcasting | |
| 274 | −in the frequency range from 87,5 to 108,0 MHz</title> | |
| 275 | − </biblioentry> | |
| 276 | − | |
| 277 | − <biblioentry id="nrsc4"> | |
| 278 | − <abbrev>NRSC-4-B</abbrev> | |
| 279 | − <authorgroup> | |
| 280 | − <corpauthor>National Radio Systems Committee | |
| 281 | −(<ulink url="http://www.nrscstandards.org">http://www.nrscstandards.org</ulink>)</corpauthor> | |
| 282 | − </authorgroup> | |
| 283 | − <title>NRSC-4-B: United States RBDS Standard</title> | |
| 284 | − </biblioentry> | |
| 285 | − | |
| 286 | − <biblioentry id="iso12232"> | |
| 287 | − <abbrev>ISO 12232:2006</abbrev> | |
| 288 | − <authorgroup> | |
| 289 | − <corpauthor>International Organization for Standardization | |
| 290 | −(<ulink url="http://www.iso.org">http://www.iso.org</ulink>)</corpauthor> | |
| 291 | − </authorgroup> | |
| 292 | − <title>Photography — Digital still cameras — Determination | |
| 293 | − of exposure index, ISO speed ratings, standard output sensitivity, and | |
| 294 | − recommended exposure index</title> | |
| 295 | − </biblioentry> | |
| 296 | − | |
| 297 | − <biblioentry id="cea861"> | |
| 298 | − <abbrev>CEA-861-E</abbrev> | |
| 299 | − <authorgroup> | |
| 300 | − <corpauthor>Consumer Electronics Association | |
| 301 | −(<ulink url="http://www.ce.org">http://www.ce.org</ulink>)</corpauthor> | |
| 302 | − </authorgroup> | |
| 303 | − <title>A DTV Profile for Uncompressed High Speed Digital Interfaces</title> | |
| 304 | − </biblioentry> | |
| 305 | − | |
| 306 | − <biblioentry id="vesadmt"> | |
| 307 | − <abbrev>VESA DMT</abbrev> | |
| 308 | − <authorgroup> | |
| 309 | − <corpauthor>Video Electronics Standards Association | |
| 310 | −(<ulink url="http://www.vesa.org">http://www.vesa.org</ulink>)</corpauthor> | |
| 311 | − </authorgroup> | |
| 312 | − <title>VESA and Industry Standards and Guidelines for Computer Display Monitor Timing (DMT)</title> | |
| 313 | − </biblioentry> | |
| 314 | − | |
| 315 | − <biblioentry id="vesaedid"> | |
| 316 | − <abbrev>EDID</abbrev> | |
| 317 | − <authorgroup> | |
| 318 | − <corpauthor>Video Electronics Standards Association | |
| 319 | −(<ulink url="http://www.vesa.org">http://www.vesa.org</ulink>)</corpauthor> | |
| 320 | − </authorgroup> | |
| 321 | − <title>VESA Enhanced Extended Display Identification Data Standard</title> | |
| 322 | − <subtitle>Release A, Revision 2</subtitle> | |
| 323 | − </biblioentry> | |
| 324 | − | |
| 325 | − <biblioentry id="hdcp"> | |
| 326 | − <abbrev>HDCP</abbrev> | |
| 327 | − <authorgroup> | |
| 328 | − <corpauthor>Digital Content Protection LLC | |
| 329 | −(<ulink url="http://www.digital-cp.com">http://www.digital-cp.com</ulink>)</corpauthor> | |
| 330 | − </authorgroup> | |
| 331 | − <title>High-bandwidth Digital Content Protection System</title> | |
| 332 | − <subtitle>Revision 1.3</subtitle> | |
| 333 | − </biblioentry> | |
| 334 | − | |
| 335 | − <biblioentry id="hdmi"> | |
| 336 | − <abbrev>HDMI</abbrev> | |
| 337 | − <authorgroup> | |
| 338 | − <corpauthor>HDMI Licensing LLC | |
| 339 | −(<ulink url="http://www.hdmi.org">http://www.hdmi.org</ulink>)</corpauthor> | |
| 340 | − </authorgroup> | |
| 341 | − <title>High-Definition Multimedia Interface</title> | |
| 342 | − <subtitle>Specification Version 1.4a</subtitle> | |
| 343 | − </biblioentry> | |
| 344 | − | |
| 345 | − <biblioentry id="hdmi2"> | |
| 346 | − <abbrev>HDMI2</abbrev> | |
| 347 | − <authorgroup> | |
| 348 | − <corpauthor>HDMI Licensing LLC | |
| 349 | −(<ulink url="http://www.hdmi.org">http://www.hdmi.org</ulink>)</corpauthor> | |
| 350 | − </authorgroup> | |
| 351 | − <title>High-Definition Multimedia Interface</title> | |
| 352 | − <subtitle>Specification Version 2.0</subtitle> | |
| 353 | − </biblioentry> | |
| 354 | − | |
| 355 | − <biblioentry id="dp"> | |
| 356 | − <abbrev>DP</abbrev> | |
| 357 | − <authorgroup> | |
| 358 | − <corpauthor>Video Electronics Standards Association | |
| 359 | −(<ulink url="http://www.vesa.org">http://www.vesa.org</ulink>)</corpauthor> | |
| 360 | − </authorgroup> | |
| 361 | − <title>VESA DisplayPort Standard</title> | |
| 362 | − <subtitle>Version 1, Revision 2</subtitle> | |
| 363 | − </biblioentry> | |
| 364 | − | |
| 365 | − <biblioentry id="poynton"> | |
| 366 | − <abbrev>poynton</abbrev> | |
| 367 | − <authorgroup> | |
| 368 | − <corpauthor>Charles Poynton</corpauthor> | |
| 369 | − </authorgroup> | |
| 370 | − <title>Digital Video and HDTV, Algorithms and Interfaces</title> | |
| 371 | − </biblioentry> | |
| 372 | − | |
| 373 | − <biblioentry id="colimg"> | |
| 374 | − <abbrev>colimg</abbrev> | |
| 375 | − <authorgroup> | |
| 376 | − <corpauthor>Erik Reinhard et al.</corpauthor> | |
| 377 | − </authorgroup> | |
| 378 | − <title>Color Imaging: Fundamentals and Applications</title> | |
| 379 | − </biblioentry> | |
| 380 | − | |
| 381 | − </bibliography> | |
| @@ -1,659 +0,0 @@ | ||
| 1 | −<programlisting> | |
| 2 | −/* | |
| 3 | − * V4L2 video capture example | |
| 4 | − * | |
| 5 | − * This program can be used and distributed without restrictions. | |
| 6 | − * | |
| 7 | − * This program is provided with the V4L2 API | |
| 8 | − * see https://linuxtv.org/docs.php for more information | |
| 9 | − */ | |
| 10 | − | |
| 11 | −#include <stdio.h> | |
| 12 | −#include <stdlib.h> | |
| 13 | −#include <string.h> | |
| 14 | −#include <assert.h> | |
| 15 | − | |
| 16 | −#include <getopt.h> /* getopt_long() */ | |
| 17 | − | |
| 18 | −#include <fcntl.h> /* low-level i/o */ | |
| 19 | −#include <unistd.h> | |
| 20 | −#include <errno.h> | |
| 21 | −#include <sys/stat.h> | |
| 22 | −#include <sys/types.h> | |
| 23 | −#include <sys/time.h> | |
| 24 | −#include <sys/mman.h> | |
| 25 | −#include <sys/ioctl.h> | |
| 26 | − | |
| 27 | −#include <linux/videodev2.h> | |
| 28 | − | |
| 29 | −#define CLEAR(x) memset(&(x), 0, sizeof(x)) | |
| 30 | − | |
| 31 | −enum io_method { | |
| 32 | − IO_METHOD_READ, | |
| 33 | − IO_METHOD_MMAP, | |
| 34 | − IO_METHOD_USERPTR, | |
| 35 | −}; | |
| 36 | − | |
| 37 | −struct buffer { | |
| 38 | − void *start; | |
| 39 | − size_t length; | |
| 40 | −}; | |
| 41 | − | |
| 42 | −static char *dev_name; | |
| 43 | −static enum io_method io = IO_METHOD_MMAP; | |
| 44 | −static int fd = -1; | |
| 45 | −struct buffer *buffers; | |
| 46 | −static unsigned int n_buffers; | |
| 47 | −static int out_buf; | |
| 48 | −static int force_format; | |
| 49 | −static int frame_count = 70; | |
| 50 | − | |
| 51 | −static void errno_exit(const char *s) | |
| 52 | −{ | |
| 53 | − fprintf(stderr, "%s error %d, %s\n", s, errno, strerror(errno)); | |
| 54 | − exit(EXIT_FAILURE); | |
| 55 | −} | |
| 56 | − | |
| 57 | −static int xioctl(int fh, int request, void *arg) | |
| 58 | −{ | |
| 59 | − int r; | |
| 60 | − | |
| 61 | − do { | |
| 62 | − r = ioctl(fh, request, arg); | |
| 63 | − } while (-1 == r && EINTR == errno); | |
| 64 | − | |
| 65 | − return r; | |
| 66 | −} | |
| 67 | − | |
| 68 | −static void process_image(const void *p, int size) | |
| 69 | −{ | |
| 70 | − if (out_buf) | |
| 71 | − fwrite(p, size, 1, stdout); | |
| 72 | − | |
| 73 | − fflush(stderr); | |
| 74 | − fprintf(stderr, "."); | |
| 75 | − fflush(stdout); | |
| 76 | −} | |
| 77 | − | |
| 78 | −static int read_frame(void) | |
| 79 | −{ | |
| 80 | − struct <link linkend="v4l2-buffer">v4l2_buffer</link> buf; | |
| 81 | − unsigned int i; | |
| 82 | − | |
| 83 | − switch (io) { | |
| 84 | − case IO_METHOD_READ: | |
| 85 | − if (-1 == read(fd, buffers[0].start, buffers[0].length)) { | |
| 86 | − switch (errno) { | |
| 87 | − case EAGAIN: | |
| 88 | − return 0; | |
| 89 | − | |
| 90 | − case EIO: | |
| 91 | − /* Could ignore EIO, see spec. */ | |
| 92 | − | |
| 93 | − /* fall through */ | |
| 94 | − | |
| 95 | − default: | |
| 96 | − errno_exit("read"); | |
| 97 | − } | |
| 98 | − } | |
| 99 | − | |
| 100 | − process_image(buffers[0].start, buffers[0].length); | |
| 101 | − break; | |
| 102 | − | |
| 103 | − case IO_METHOD_MMAP: | |
| 104 | − CLEAR(buf); | |
| 105 | − | |
| 106 | − buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
| 107 | − buf.memory = V4L2_MEMORY_MMAP; | |
| 108 | − | |
| 109 | − if (-1 == xioctl(fd, VIDIOC_DQBUF, &buf)) { | |
| 110 | − switch (errno) { | |
| 111 | − case EAGAIN: | |
| 112 | − return 0; | |
| 113 | − | |
| 114 | − case EIO: | |
| 115 | − /* Could ignore EIO, see spec. */ | |
| 116 | − | |
| 117 | − /* fall through */ | |
| 118 | − | |
| 119 | − default: | |
| 120 | − errno_exit("VIDIOC_DQBUF"); | |
| 121 | − } | |
| 122 | − } | |
| 123 | − | |
| 124 | − assert(buf.index < n_buffers); | |
| 125 | − | |
| 126 | − process_image(buffers[buf.index].start, buf.bytesused); | |
| 127 | − | |
| 128 | − if (-1 == xioctl(fd, VIDIOC_QBUF, &buf)) | |
| 129 | − errno_exit("VIDIOC_QBUF"); | |
| 130 | − break; | |
| 131 | − | |
| 132 | − case IO_METHOD_USERPTR: | |
| 133 | − CLEAR(buf); | |
| 134 | − | |
| 135 | − buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
| 136 | − buf.memory = V4L2_MEMORY_USERPTR; | |
| 137 | − | |
| 138 | − if (-1 == xioctl(fd, VIDIOC_DQBUF, &buf)) { | |
| 139 | − switch (errno) { | |
| 140 | − case EAGAIN: | |
| 141 | − return 0; | |
| 142 | − | |
| 143 | − case EIO: | |
| 144 | − /* Could ignore EIO, see spec. */ | |
| 145 | − | |
| 146 | − /* fall through */ | |
| 147 | − | |
| 148 | − default: | |
| 149 | − errno_exit("VIDIOC_DQBUF"); | |
| 150 | − } | |
| 151 | − } | |
| 152 | − | |
| 153 | − for (i = 0; i < n_buffers; ++i) | |
| 154 | − if (buf.m.userptr == (unsigned long)buffers[i].start | |
| 155 | − && buf.length == buffers[i].length) | |
| 156 | − break; | |
| 157 | − | |
| 158 | − assert(i < n_buffers); | |
| 159 | − | |
| 160 | − process_image((void *)buf.m.userptr, buf.bytesused); | |
| 161 | − | |
| 162 | − if (-1 == xioctl(fd, VIDIOC_QBUF, &buf)) | |
| 163 | − errno_exit("VIDIOC_QBUF"); | |
| 164 | − break; | |
| 165 | − } | |
| 166 | − | |
| 167 | − return 1; | |
| 168 | −} | |
| 169 | − | |
| 170 | −static void mainloop(void) | |
| 171 | −{ | |
| 172 | − unsigned int count; | |
| 173 | − | |
| 174 | − count = frame_count; | |
| 175 | − | |
| 176 | − while (count-- > 0) { | |
| 177 | − for (;;) { | |
| 178 | − fd_set fds; | |
| 179 | − struct timeval tv; | |
| 180 | − int r; | |
| 181 | − | |
| 182 | − FD_ZERO(&fds); | |
| 183 | − FD_SET(fd, &fds); | |
| 184 | − | |
| 185 | − /* Timeout. */ | |
| 186 | − tv.tv_sec = 2; | |
| 187 | − tv.tv_usec = 0; | |
| 188 | − | |
| 189 | − r = select(fd + 1, &fds, NULL, NULL, &tv); | |
| 190 | − | |
| 191 | − if (-1 == r) { | |
| 192 | − if (EINTR == errno) | |
| 193 | − continue; | |
| 194 | − errno_exit("select"); | |
| 195 | − } | |
| 196 | − | |
| 197 | − if (0 == r) { | |
| 198 | − fprintf(stderr, "select timeout\n"); | |
| 199 | − exit(EXIT_FAILURE); | |
| 200 | − } | |
| 201 | − | |
| 202 | − if (read_frame()) | |
| 203 | − break; | |
| 204 | − /* EAGAIN - continue select loop. */ | |
| 205 | − } | |
| 206 | − } | |
| 207 | −} | |
| 208 | − | |
| 209 | −static void stop_capturing(void) | |
| 210 | −{ | |
| 211 | − enum <link linkend="v4l2-buf-type">v4l2_buf_type</link> type; | |
| 212 | − | |
| 213 | − switch (io) { | |
| 214 | − case IO_METHOD_READ: | |
| 215 | − /* Nothing to do. */ | |
| 216 | − break; | |
| 217 | − | |
| 218 | − case IO_METHOD_MMAP: | |
| 219 | − case IO_METHOD_USERPTR: | |
| 220 | − type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
| 221 | − if (-1 == xioctl(fd, VIDIOC_STREAMOFF, &type)) | |
| 222 | − errno_exit("VIDIOC_STREAMOFF"); | |
| 223 | − break; | |
| 224 | − } | |
| 225 | −} | |
| 226 | − | |
| 227 | −static void start_capturing(void) | |
| 228 | −{ | |
| 229 | − unsigned int i; | |
| 230 | − enum <link linkend="v4l2-buf-type">v4l2_buf_type</link> type; | |
| 231 | − | |
| 232 | − switch (io) { | |
| 233 | − case IO_METHOD_READ: | |
| 234 | − /* Nothing to do. */ | |
| 235 | − break; | |
| 236 | − | |
| 237 | − case IO_METHOD_MMAP: | |
| 238 | − for (i = 0; i < n_buffers; ++i) { | |
| 239 | − struct <link linkend="v4l2-buffer">v4l2_buffer</link> buf; | |
| 240 | − | |
| 241 | − CLEAR(buf); | |
| 242 | − buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
| 243 | − buf.memory = V4L2_MEMORY_MMAP; | |
| 244 | − buf.index = i; | |
| 245 | − | |
| 246 | − if (-1 == xioctl(fd, VIDIOC_QBUF, &buf)) | |
| 247 | − errno_exit("VIDIOC_QBUF"); | |
| 248 | − } | |
| 249 | − type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
| 250 | − if (-1 == xioctl(fd, VIDIOC_STREAMON, &type)) | |
| 251 | − errno_exit("VIDIOC_STREAMON"); | |
| 252 | − break; | |
| 253 | − | |
| 254 | − case IO_METHOD_USERPTR: | |
| 255 | − for (i = 0; i < n_buffers; ++i) { | |
| 256 | − struct <link linkend="v4l2-buffer">v4l2_buffer</link> buf; | |
| 257 | − | |
| 258 | − CLEAR(buf); | |
| 259 | − buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
| 260 | − buf.memory = V4L2_MEMORY_USERPTR; | |
| 261 | − buf.index = i; | |
| 262 | − buf.m.userptr = (unsigned long)buffers[i].start; | |
| 263 | − buf.length = buffers[i].length; | |
| 264 | − | |
| 265 | − if (-1 == xioctl(fd, VIDIOC_QBUF, &buf)) | |
| 266 | − errno_exit("VIDIOC_QBUF"); | |
| 267 | − } | |
| 268 | − type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
| 269 | − if (-1 == xioctl(fd, VIDIOC_STREAMON, &type)) | |
| 270 | − errno_exit("VIDIOC_STREAMON"); | |
| 271 | − break; | |
| 272 | − } | |
| 273 | −} | |
| 274 | − | |
| 275 | −static void uninit_device(void) | |
| 276 | −{ | |
| 277 | − unsigned int i; | |
| 278 | − | |
| 279 | − switch (io) { | |
| 280 | − case IO_METHOD_READ: | |
| 281 | − free(buffers[0].start); | |
| 282 | − break; | |
| 283 | − | |
| 284 | − case IO_METHOD_MMAP: | |
| 285 | − for (i = 0; i < n_buffers; ++i) | |
| 286 | − if (-1 == munmap(buffers[i].start, buffers[i].length)) | |
| 287 | − errno_exit("munmap"); | |
| 288 | − break; | |
| 289 | − | |
| 290 | − case IO_METHOD_USERPTR: | |
| 291 | − for (i = 0; i < n_buffers; ++i) | |
| 292 | − free(buffers[i].start); | |
| 293 | − break; | |
| 294 | − } | |
| 295 | − | |
| 296 | − free(buffers); | |
| 297 | −} | |
| 298 | − | |
| 299 | −static void init_read(unsigned int buffer_size) | |
| 300 | −{ | |
| 301 | − buffers = calloc(1, sizeof(*buffers)); | |
| 302 | − | |
| 303 | − if (!buffers) { | |
| 304 | − fprintf(stderr, "Out of memory\n"); | |
| 305 | − exit(EXIT_FAILURE); | |
| 306 | − } | |
| 307 | − | |
| 308 | − buffers[0].length = buffer_size; | |
| 309 | − buffers[0].start = malloc(buffer_size); | |
| 310 | − | |
| 311 | − if (!buffers[0].start) { | |
| 312 | − fprintf(stderr, "Out of memory\n"); | |
| 313 | − exit(EXIT_FAILURE); | |
| 314 | − } | |
| 315 | −} | |
| 316 | − | |
| 317 | −static void init_mmap(void) | |
| 318 | −{ | |
| 319 | − struct <link linkend="v4l2-requestbuffers">v4l2_requestbuffers</link> req; | |
| 320 | − | |
| 321 | − CLEAR(req); | |
| 322 | − | |
| 323 | − req.count = 4; | |
| 324 | − req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
| 325 | − req.memory = V4L2_MEMORY_MMAP; | |
| 326 | − | |
| 327 | − if (-1 == xioctl(fd, VIDIOC_REQBUFS, &req)) { | |
| 328 | − if (EINVAL == errno) { | |
| 329 | − fprintf(stderr, "%s does not support " | |
| 330 | − "memory mapping\n", dev_name); | |
| 331 | − exit(EXIT_FAILURE); | |
| 332 | − } else { | |
| 333 | − errno_exit("VIDIOC_REQBUFS"); | |
| 334 | − } | |
| 335 | − } | |
| 336 | − | |
| 337 | − if (req.count < 2) { | |
| 338 | − fprintf(stderr, "Insufficient buffer memory on %s\n", | |
| 339 | − dev_name); | |
| 340 | − exit(EXIT_FAILURE); | |
| 341 | − } | |
| 342 | − | |
| 343 | − buffers = calloc(req.count, sizeof(*buffers)); | |
| 344 | − | |
| 345 | − if (!buffers) { | |
| 346 | − fprintf(stderr, "Out of memory\n"); | |
| 347 | − exit(EXIT_FAILURE); | |
| 348 | − } | |
| 349 | − | |
| 350 | − for (n_buffers = 0; n_buffers < req.count; ++n_buffers) { | |
| 351 | − struct <link linkend="v4l2-buffer">v4l2_buffer</link> buf; | |
| 352 | − | |
| 353 | − CLEAR(buf); | |
| 354 | − | |
| 355 | − buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
| 356 | − buf.memory = V4L2_MEMORY_MMAP; | |
| 357 | − buf.index = n_buffers; | |
| 358 | − | |
| 359 | − if (-1 == xioctl(fd, VIDIOC_QUERYBUF, &buf)) | |
| 360 | − errno_exit("VIDIOC_QUERYBUF"); | |
| 361 | − | |
| 362 | − buffers[n_buffers].length = buf.length; | |
| 363 | − buffers[n_buffers].start = | |
| 364 | − mmap(NULL /* start anywhere */, | |
| 365 | − buf.length, | |
| 366 | − PROT_READ | PROT_WRITE /* required */, | |
| 367 | − MAP_SHARED /* recommended */, | |
| 368 | − fd, buf.m.offset); | |
| 369 | − | |
| 370 | − if (MAP_FAILED == buffers[n_buffers].start) | |
| 371 | − errno_exit("mmap"); | |
| 372 | − } | |
| 373 | −} | |
| 374 | − | |
| 375 | −static void init_userp(unsigned int buffer_size) | |
| 376 | −{ | |
| 377 | − struct <link linkend="v4l2-requestbuffers">v4l2_requestbuffers</link> req; | |
| 378 | − | |
| 379 | − CLEAR(req); | |
| 380 | − | |
| 381 | − req.count = 4; | |
| 382 | − req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
| 383 | − req.memory = V4L2_MEMORY_USERPTR; | |
| 384 | − | |
| 385 | − if (-1 == xioctl(fd, VIDIOC_REQBUFS, &req)) { | |
| 386 | − if (EINVAL == errno) { | |
| 387 | − fprintf(stderr, "%s does not support " | |
| 388 | − "user pointer i/o\n", dev_name); | |
| 389 | − exit(EXIT_FAILURE); | |
| 390 | − } else { | |
| 391 | − errno_exit("VIDIOC_REQBUFS"); | |
| 392 | − } | |
| 393 | − } | |
| 394 | − | |
| 395 | − buffers = calloc(4, sizeof(*buffers)); | |
| 396 | − | |
| 397 | − if (!buffers) { | |
| 398 | − fprintf(stderr, "Out of memory\n"); | |
| 399 | − exit(EXIT_FAILURE); | |
| 400 | − } | |
| 401 | − | |
| 402 | − for (n_buffers = 0; n_buffers < 4; ++n_buffers) { | |
| 403 | − buffers[n_buffers].length = buffer_size; | |
| 404 | − buffers[n_buffers].start = malloc(buffer_size); | |
| 405 | − | |
| 406 | − if (!buffers[n_buffers].start) { | |
| 407 | − fprintf(stderr, "Out of memory\n"); | |
| 408 | − exit(EXIT_FAILURE); | |
| 409 | − } | |
| 410 | − } | |
| 411 | −} | |
| 412 | − | |
| 413 | −static void init_device(void) | |
| 414 | −{ | |
| 415 | − struct <link linkend="v4l2-capability">v4l2_capability</link> cap; | |
| 416 | − struct <link linkend="v4l2-cropcap">v4l2_cropcap</link> cropcap; | |
| 417 | − struct <link linkend="v4l2-crop">v4l2_crop</link> crop; | |
| 418 | − struct <link linkend="v4l2-format">v4l2_format</link> fmt; | |
| 419 | − unsigned int min; | |
| 420 | − | |
| 421 | − if (-1 == xioctl(fd, VIDIOC_QUERYCAP, &cap)) { | |
| 422 | − if (EINVAL == errno) { | |
| 423 | − fprintf(stderr, "%s is no V4L2 device\n", | |
| 424 | − dev_name); | |
| 425 | − exit(EXIT_FAILURE); | |
| 426 | − } else { | |
| 427 | − errno_exit("VIDIOC_QUERYCAP"); | |
| 428 | − } | |
| 429 | − } | |
| 430 | − | |
| 431 | − if (!(cap.capabilities & V4L2_CAP_VIDEO_CAPTURE)) { | |
| 432 | − fprintf(stderr, "%s is no video capture device\n", | |
| 433 | − dev_name); | |
| 434 | − exit(EXIT_FAILURE); | |
| 435 | − } | |
| 436 | − | |
| 437 | − switch (io) { | |
| 438 | − case IO_METHOD_READ: | |
| 439 | − if (!(cap.capabilities & V4L2_CAP_READWRITE)) { | |
| 440 | − fprintf(stderr, "%s does not support read i/o\n", | |
| 441 | − dev_name); | |
| 442 | − exit(EXIT_FAILURE); | |
| 443 | − } | |
| 444 | − break; | |
| 445 | − | |
| 446 | − case IO_METHOD_MMAP: | |
| 447 | − case IO_METHOD_USERPTR: | |
| 448 | − if (!(cap.capabilities & V4L2_CAP_STREAMING)) { | |
| 449 | − fprintf(stderr, "%s does not support streaming i/o\n", | |
| 450 | − dev_name); | |
| 451 | − exit(EXIT_FAILURE); | |
| 452 | − } | |
| 453 | − break; | |
| 454 | − } | |
| 455 | − | |
| 456 | − | |
| 457 | − /* Select video input, video standard and tune here. */ | |
| 458 | − | |
| 459 | − | |
| 460 | − CLEAR(cropcap); | |
| 461 | − | |
| 462 | − cropcap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
| 463 | − | |
| 464 | − if (0 == xioctl(fd, VIDIOC_CROPCAP, &cropcap)) { | |
| 465 | − crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
| 466 | − crop.c = cropcap.defrect; /* reset to default */ | |
| 467 | − | |
| 468 | − if (-1 == xioctl(fd, VIDIOC_S_CROP, &crop)) { | |
| 469 | − switch (errno) { | |
| 470 | − case EINVAL: | |
| 471 | − /* Cropping not supported. */ | |
| 472 | − break; | |
| 473 | − default: | |
| 474 | − /* Errors ignored. */ | |
| 475 | − break; | |
| 476 | − } | |
| 477 | − } | |
| 478 | − } else { | |
| 479 | − /* Errors ignored. */ | |
| 480 | − } | |
| 481 | − | |
| 482 | − | |
| 483 | − CLEAR(fmt); | |
| 484 | − | |
| 485 | − fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
| 486 | − if (force_format) { | |
| 487 | − fmt.fmt.pix.width = 640; | |
| 488 | − fmt.fmt.pix.height = 480; | |
| 489 | − fmt.fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV; | |
| 490 | − fmt.fmt.pix.field = V4L2_FIELD_INTERLACED; | |
| 491 | − | |
| 492 | − if (-1 == xioctl(fd, VIDIOC_S_FMT, &fmt)) | |
| 493 | − errno_exit("VIDIOC_S_FMT"); | |
| 494 | − | |
| 495 | − /* Note VIDIOC_S_FMT may change width and height. */ | |
| 496 | − } else { | |
| 497 | − /* Preserve original settings as set by v4l2-ctl for example */ | |
| 498 | − if (-1 == xioctl(fd, VIDIOC_G_FMT, &fmt)) | |
| 499 | − errno_exit("VIDIOC_G_FMT"); | |
| 500 | − } | |
| 501 | − | |
| 502 | − /* Buggy driver paranoia. */ | |
| 503 | − min = fmt.fmt.pix.width * 2; | |
| 504 | − if (fmt.fmt.pix.bytesperline < min) | |
| 505 | − fmt.fmt.pix.bytesperline = min; | |
| 506 | − min = fmt.fmt.pix.bytesperline * fmt.fmt.pix.height; | |
| 507 | − if (fmt.fmt.pix.sizeimage < min) | |
| 508 | − fmt.fmt.pix.sizeimage = min; | |
| 509 | − | |
| 510 | − switch (io) { | |
| 511 | − case IO_METHOD_READ: | |
| 512 | − init_read(fmt.fmt.pix.sizeimage); | |
| 513 | − break; | |
| 514 | − | |
| 515 | − case IO_METHOD_MMAP: | |
| 516 | − init_mmap(); | |
| 517 | − break; | |
| 518 | − | |
| 519 | − case IO_METHOD_USERPTR: | |
| 520 | − init_userp(fmt.fmt.pix.sizeimage); | |
| 521 | − break; | |
| 522 | − } | |
| 523 | −} | |
| 524 | − | |
| 525 | −static void close_device(void) | |
| 526 | −{ | |
| 527 | − if (-1 == close(fd)) | |
| 528 | − errno_exit("close"); | |
| 529 | − | |
| 530 | − fd = -1; | |
| 531 | −} | |
| 532 | − | |
| 533 | −static void open_device(void) | |
| 534 | −{ | |
| 535 | − struct stat st; | |
| 536 | − | |
| 537 | − if (-1 == stat(dev_name, &st)) { | |
| 538 | − fprintf(stderr, "Cannot identify '%s': %d, %s\n", | |
| 539 | − dev_name, errno, strerror(errno)); | |
| 540 | − exit(EXIT_FAILURE); | |
| 541 | − } | |
| 542 | − | |
| 543 | − if (!S_ISCHR(st.st_mode)) { | |
| 544 | − fprintf(stderr, "%s is no device\n", dev_name); | |
| 545 | − exit(EXIT_FAILURE); | |
| 546 | − } | |
| 547 | − | |
| 548 | − fd = open(dev_name, O_RDWR /* required */ | O_NONBLOCK, 0); | |
| 549 | − | |
| 550 | − if (-1 == fd) { | |
| 551 | − fprintf(stderr, "Cannot open '%s': %d, %s\n", | |
| 552 | − dev_name, errno, strerror(errno)); | |
| 553 | − exit(EXIT_FAILURE); | |
| 554 | − } | |
| 555 | −} | |
| 556 | − | |
| 557 | −static void usage(FILE *fp, int argc, char **argv) | |
| 558 | −{ | |
| 559 | − fprintf(fp, | |
| 560 | − "Usage: %s [options]\n\n" | |
| 561 | − "Version 1.3\n" | |
| 562 | − "Options:\n" | |
| 563 | − "-d | --device name Video device name [%s]\n" | |
| 564 | − "-h | --help Print this message\n" | |
| 565 | − "-m | --mmap Use memory mapped buffers [default]\n" | |
| 566 | − "-r | --read Use read() calls\n" | |
| 567 | − "-u | --userp Use application allocated buffers\n" | |
| 568 | − "-o | --output Outputs stream to stdout\n" | |
| 569 | − "-f | --format Force format to 640x480 YUYV\n" | |
| 570 | − "-c | --count Number of frames to grab [%i]\n" | |
| 571 | − "", | |
| 572 | − argv[0], dev_name, frame_count); | |
| 573 | −} | |
| 574 | − | |
| 575 | −static const char short_options[] = "d:hmruofc:"; | |
| 576 | − | |
| 577 | −static const struct option | |
| 578 | −long_options[] = { | |
| 579 | − { "device", required_argument, NULL, 'd' }, | |
| 580 | − { "help", no_argument, NULL, 'h' }, | |
| 581 | − { "mmap", no_argument, NULL, 'm' }, | |
| 582 | − { "read", no_argument, NULL, 'r' }, | |
| 583 | − { "userp", no_argument, NULL, 'u' }, | |
| 584 | − { "output", no_argument, NULL, 'o' }, | |
| 585 | − { "format", no_argument, NULL, 'f' }, | |
| 586 | − { "count", required_argument, NULL, 'c' }, | |
| 587 | − { 0, 0, 0, 0 } | |
| 588 | −}; | |
| 589 | − | |
| 590 | −int main(int argc, char **argv) | |
| 591 | −{ | |
| 592 | − dev_name = "/dev/video0"; | |
| 593 | − | |
| 594 | − for (;;) { | |
| 595 | − int idx; | |
| 596 | − int c; | |
| 597 | − | |
| 598 | − c = getopt_long(argc, argv, | |
| 599 | − short_options, long_options, &idx); | |
| 600 | − | |
| 601 | − if (-1 == c) | |
| 602 | − break; | |
| 603 | − | |
| 604 | − switch (c) { | |
| 605 | − case 0: /* getopt_long() flag */ | |
| 606 | − break; | |
| 607 | − | |
| 608 | − case 'd': | |
| 609 | − dev_name = optarg; | |
| 610 | − break; | |
| 611 | − | |
| 612 | − case 'h': | |
| 613 | − usage(stdout, argc, argv); | |
| 614 | − exit(EXIT_SUCCESS); | |
| 615 | − | |
| 616 | − case 'm': | |
| 617 | − io = IO_METHOD_MMAP; | |
| 618 | − break; | |
| 619 | − | |
| 620 | − case 'r': | |
| 621 | − io = IO_METHOD_READ; | |
| 622 | − break; | |
| 623 | − | |
| 624 | − case 'u': | |
| 625 | − io = IO_METHOD_USERPTR; | |
| 626 | − break; | |
| 627 | − | |
| 628 | − case 'o': | |
| 629 | − out_buf++; | |
| 630 | − break; | |
| 631 | − | |
| 632 | − case 'f': | |
| 633 | − force_format++; | |
| 634 | − break; | |
| 635 | − | |
| 636 | − case 'c': | |
| 637 | − errno = 0; | |
| 638 | − frame_count = strtol(optarg, NULL, 0); | |
| 639 | − if (errno) | |
| 640 | − errno_exit(optarg); | |
| 641 | − break; | |
| 642 | − | |
| 643 | − default: | |
| 644 | − usage(stderr, argc, argv); | |
| 645 | − exit(EXIT_FAILURE); | |
| 646 | − } | |
| 647 | − } | |
| 648 | − | |
| 649 | − open_device(); | |
| 650 | − init_device(); | |
| 651 | − start_capturing(); | |
| 652 | − mainloop(); | |
| 653 | − stop_capturing(); | |
| 654 | − uninit_device(); | |
| 655 | − close_device(); | |
| 656 | − fprintf(stderr, "\n"); | |
| 657 | − return 0; | |
| 658 | −} | |
| 659 | −</programlisting> | |
| @@ -1,75 +0,0 @@ | ||
| 1 | −<partinfo> | |
| 2 | − <authorgroup> | |
| 3 | − <author> | |
| 4 | − <firstname>Hans</firstname> | |
| 5 | − <surname>Verkuil</surname> | |
| 6 | − <affiliation><address><email>hans.verkuil@cisco.com</email></address></affiliation> | |
| 7 | − <contrib>Initial version.</contrib> | |
| 8 | − </author> | |
| 9 | − </authorgroup> | |
| 10 | − <copyright> | |
| 11 | − <year>2016</year> | |
| 12 | − <holder>Hans Verkuil</holder> | |
| 13 | − </copyright> | |
| 14 | − | |
| 15 | − <revhistory> | |
| 16 | − <!-- Put document revisions here, newest first. --> | |
| 17 | − <revision> | |
| 18 | − <revnumber>1.0.0</revnumber> | |
| 19 | − <date>2016-03-17</date> | |
| 20 | − <authorinitials>hv</authorinitials> | |
| 21 | − <revremark>Initial revision</revremark> | |
| 22 | − </revision> | |
| 23 | − </revhistory> | |
| 24 | −</partinfo> | |
| 25 | − | |
| 26 | −<title>CEC API</title> | |
| 27 | − | |
| 28 | −<chapter id="cec-api"> | |
| 29 | − <title>CEC: Consumer Electronics Control</title> | |
| 30 | − | |
| 31 | − <section id="cec-intro"> | |
| 32 | − <title>Introduction</title> | |
| 33 | − <para> | |
| 34 | − Note: this documents the proposed CEC API. This API is not yet finalized and | |
| 35 | − is currently only available as a staging kernel module. | |
| 36 | − </para> | |
| 37 | − <para>HDMI connectors provide a single pin for use by the Consumer Electronics | |
| 38 | − Control protocol. This protocol allows different devices connected by an HDMI cable | |
| 39 | − to communicate. The protocol for CEC version 1.4 is defined in supplements 1 (CEC) | |
| 40 | − and 2 (HEAC or HDMI Ethernet and Audio Return Channel) of the HDMI 1.4a | |
| 41 | − (<xref linkend="hdmi" />) specification and the extensions added to CEC version 2.0 | |
| 42 | − are defined in chapter 11 of the HDMI 2.0 (<xref linkend="hdmi2" />) specification. | |
| 43 | − </para> | |
| 44 | − | |
| 45 | − <para>The bitrate is very slow (effectively no more than 36 bytes per second) and | |
| 46 | − is based on the ancient AV.link protocol used in old SCART connectors. The protocol | |
| 47 | − closely resembles a crazy Rube Goldberg contraption and is an unholy mix of low and | |
| 48 | − high level messages. Some messages, especially those part of the HEAC protocol layered | |
| 49 | − on top of CEC, need to be handled by the kernel, others can be handled either by the | |
| 50 | − kernel or by userspace.</para> | |
| 51 | − | |
| 52 | − <para>In addition, CEC can be implemented in HDMI receivers, transmitters and in USB | |
| 53 | − devices that have an HDMI input and an HDMI output and that control just the CEC pin.</para> | |
| 54 | − | |
| 55 | − <para>Drivers that support CEC will create a CEC device node (/dev/cecX) | |
| 56 | − to give userspace access to the CEC adapter. The &CEC-ADAP-G-CAPS; ioctl will tell userspace | |
| 57 | − what it is allowed to do.</para> | |
| 58 | − </section> | |
| 59 | −</chapter> | |
| 60 | − | |
| 61 | −<appendix id="cec-user-func"> | |
| 62 | − <title>Function Reference</title> | |
| 63 | − <!-- Keep this alphabetically sorted. --> | |
| 64 | − &sub-cec-func-open; | |
| 65 | − &sub-cec-func-close; | |
| 66 | − &sub-cec-func-ioctl; | |
| 67 | − &sub-cec-func-poll; | |
| 68 | − <!-- All ioctls go here. --> | |
| 69 | − &sub-cec-ioc-adap-g-caps; | |
| 70 | − &sub-cec-ioc-adap-g-log-addrs; | |
| 71 | − &sub-cec-ioc-adap-g-phys-addr; | |
| 72 | − &sub-cec-ioc-dqevent; | |
| 73 | − &sub-cec-ioc-g-mode; | |
| 74 | − &sub-cec-ioc-receive; | |
| 75 | −</appendix> | |
| @@ -1,64 +0,0 @@ | ||
| 1 | −<refentry id="cec-func-close"> | |
| 2 | − <refmeta> | |
| 3 | − <refentrytitle>cec close()</refentrytitle> | |
| 4 | − &manvol; | |
| 5 | − </refmeta> | |
| 6 | − | |
| 7 | − <refnamediv> | |
| 8 | − <refname>cec-close</refname> | |
| 9 | − <refpurpose>Close a cec device</refpurpose> | |
| 10 | − </refnamediv> | |
| 11 | − | |
| 12 | − <refsynopsisdiv> | |
| 13 | − <funcsynopsis> | |
| 14 | − <funcsynopsisinfo>#include <unistd.h></funcsynopsisinfo> | |
| 15 | − <funcprototype> | |
| 16 | − <funcdef>int <function>close</function></funcdef> | |
| 17 | − <paramdef>int <parameter>fd</parameter></paramdef> | |
| 18 | − </funcprototype> | |
| 19 | − </funcsynopsis> | |
| 20 | − </refsynopsisdiv> | |
| 21 | − | |
| 22 | − <refsect1> | |
| 23 | − <title>Arguments</title> | |
| 24 | − | |
| 25 | − <variablelist> | |
| 26 | − <varlistentry> | |
| 27 | − <term><parameter>fd</parameter></term> | |
| 28 | − <listitem> | |
| 29 | − <para>&fd;</para> | |
| 30 | − </listitem> | |
| 31 | − </varlistentry> | |
| 32 | − </variablelist> | |
| 33 | − </refsect1> | |
| 34 | − | |
| 35 | − <refsect1> | |
| 36 | − <title>Description</title> | |
| 37 | − | |
| 38 | − <para> | |
| 39 | − Note: this documents the proposed CEC API. This API is not yet finalized and | |
| 40 | − is currently only available as a staging kernel module. | |
| 41 | − </para> | |
| 42 | − | |
| 43 | − <para>Closes the cec device. Resources associated with the file descriptor | |
| 44 | − are freed. The device configuration remain unchanged.</para> | |
| 45 | − </refsect1> | |
| 46 | − | |
| 47 | − <refsect1> | |
| 48 | − <title>Return Value</title> | |
| 49 | − | |
| 50 | − <para><function>close</function> returns 0 on success. On error, -1 is | |
| 51 | − returned, and <varname>errno</varname> is set appropriately. Possible error | |
| 52 | − codes are:</para> | |
| 53 | − | |
| 54 | − <variablelist> | |
| 55 | − <varlistentry> | |
| 56 | − <term><errorcode>EBADF</errorcode></term> | |
| 57 | − <listitem> | |
| 58 | − <para><parameter>fd</parameter> is not a valid open file descriptor. | |
| 59 | − </para> | |
| 60 | − </listitem> | |
| 61 | − </varlistentry> | |
| 62 | − </variablelist> | |
| 63 | − </refsect1> | |
| 64 | −</refentry> | |
| @@ -1,78 +0,0 @@ | ||
| 1 | −<refentry id="cec-func-ioctl"> | |
| 2 | − <refmeta> | |
| 3 | − <refentrytitle>cec ioctl()</refentrytitle> | |
| 4 | − &manvol; | |
| 5 | − </refmeta> | |
| 6 | − | |
| 7 | − <refnamediv> | |
| 8 | − <refname>cec-ioctl</refname> | |
| 9 | − <refpurpose>Control a cec device</refpurpose> | |
| 10 | − </refnamediv> | |
| 11 | − | |
| 12 | − <refsynopsisdiv> | |
| 13 | − <funcsynopsis> | |
| 14 | − <funcsynopsisinfo>#include <sys/ioctl.h></funcsynopsisinfo> | |
| 15 | − <funcprototype> | |
| 16 | − <funcdef>int <function>ioctl</function></funcdef> | |
| 17 | − <paramdef>int <parameter>fd</parameter></paramdef> | |
| 18 | − <paramdef>int <parameter>request</parameter></paramdef> | |
| 19 | − <paramdef>void *<parameter>argp</parameter></paramdef> | |
| 20 | − </funcprototype> | |
| 21 | − </funcsynopsis> | |
| 22 | − </refsynopsisdiv> | |
| 23 | − | |
| 24 | − <refsect1> | |
| 25 | − <title>Arguments</title> | |
| 26 | − | |
| 27 | − <variablelist> | |
| 28 | − <varlistentry> | |
| 29 | − <term><parameter>fd</parameter></term> | |
| 30 | − <listitem> | |
| 31 | − <para>&fd;</para> | |
| 32 | − </listitem> | |
| 33 | − </varlistentry> | |
| 34 | − <varlistentry> | |
| 35 | − <term><parameter>request</parameter></term> | |
| 36 | − <listitem> | |
| 37 | − <para>CEC ioctl request code as defined in the cec.h header file, | |
| 38 | − for example CEC_ADAP_G_CAPS.</para> | |
| 39 | − </listitem> | |
| 40 | − </varlistentry> | |
| 41 | − <varlistentry> | |
| 42 | − <term><parameter>argp</parameter></term> | |
| 43 | − <listitem> | |
| 44 | − <para>Pointer to a request-specific structure.</para> | |
| 45 | − </listitem> | |
| 46 | − </varlistentry> | |
| 47 | − </variablelist> | |
| 48 | − </refsect1> | |
| 49 | − | |
| 50 | − <refsect1> | |
| 51 | − <title>Description</title> | |
| 52 | − <para> | |
| 53 | − Note: this documents the proposed CEC API. This API is not yet finalized and | |
| 54 | − is currently only available as a staging kernel module. | |
| 55 | − </para> | |
| 56 | − | |
| 57 | − <para>The <function>ioctl()</function> function manipulates cec device | |
| 58 | − parameters. The argument <parameter>fd</parameter> must be an open file | |
| 59 | − descriptor.</para> | |
| 60 | − <para>The ioctl <parameter>request</parameter> code specifies the cec | |
| 61 | − function to be called. It has encoded in it whether the argument is an | |
| 62 | − input, output or read/write parameter, and the size of the argument | |
| 63 | − <parameter>argp</parameter> in bytes.</para> | |
| 64 | − <para>Macros and structures definitions specifying cec ioctl requests and | |
| 65 | − their parameters are located in the cec.h header file. All cec ioctl | |
| 66 | − requests, their respective function and parameters are specified in | |
| 67 | − <xref linkend="cec-user-func" />.</para> | |
| 68 | − </refsect1> | |
| 69 | − | |
| 70 | − <refsect1> | |
| 71 | − &return-value; | |
| 72 | − | |
| 73 | − <para>Request-specific error codes are listed in the | |
| 74 | − individual requests descriptions.</para> | |
| 75 | − <para>When an ioctl that takes an output or read/write parameter fails, | |
| 76 | − the parameter remains unmodified.</para> | |
| 77 | − </refsect1> | |
| 78 | −</refentry> | |
| @@ -1,104 +0,0 @@ | ||
| 1 | −<refentry id="cec-func-open"> | |
| 2 | − <refmeta> | |
| 3 | − <refentrytitle>cec open()</refentrytitle> | |
| 4 | − &manvol; | |
| 5 | − </refmeta> | |
| 6 | − | |
| 7 | − <refnamediv> | |
| 8 | − <refname>cec-open</refname> | |
| 9 | − <refpurpose>Open a cec device</refpurpose> | |
| 10 | − </refnamediv> | |
| 11 | − | |
| 12 | − <refsynopsisdiv> | |
| 13 | − <funcsynopsis> | |
| 14 | − <funcsynopsisinfo>#include <fcntl.h></funcsynopsisinfo> | |
| 15 | − <funcprototype> | |
| 16 | − <funcdef>int <function>open</function></funcdef> | |
| 17 | − <paramdef>const char *<parameter>device_name</parameter></paramdef> | |
| 18 | − <paramdef>int <parameter>flags</parameter></paramdef> | |
| 19 | − </funcprototype> | |
| 20 | − </funcsynopsis> | |
| 21 | − </refsynopsisdiv> | |
| 22 | − | |
| 23 | − <refsect1> | |
| 24 | − <title>Arguments</title> | |
| 25 | − | |
| 26 | − <variablelist> | |
| 27 | − <varlistentry> | |
| 28 | − <term><parameter>device_name</parameter></term> | |
| 29 | − <listitem> | |
| 30 | − <para>Device to be opened.</para> | |
| 31 | − </listitem> | |
| 32 | − </varlistentry> | |
| 33 | − <varlistentry> | |
| 34 | − <term><parameter>flags</parameter></term> | |
| 35 | − <listitem> | |
| 36 | − <para>Open flags. Access mode must be <constant>O_RDWR</constant>. | |
| 37 | − </para> | |
| 38 | − <para>When the <constant>O_NONBLOCK</constant> flag is | |
| 39 | −given, the &CEC-RECEIVE; ioctl will return &EAGAIN; when no message is | |
| 40 | −available, and the &CEC-TRANSMIT;, &CEC-ADAP-S-PHYS-ADDR; and | |
| 41 | −&CEC-ADAP-S-LOG-ADDRS; ioctls all act in non-blocking mode.</para> | |
| 42 | − <para>Other flags have no effect.</para> | |
| 43 | − </listitem> | |
| 44 | − </varlistentry> | |
| 45 | − </variablelist> | |
| 46 | − </refsect1> | |
| 47 | − <refsect1> | |
| 48 | − <title>Description</title> | |
| 49 | − <para> | |
| 50 | − Note: this documents the proposed CEC API. This API is not yet finalized and | |
| 51 | − is currently only available as a staging kernel module. | |
| 52 | − </para> | |
| 53 | − | |
| 54 | − <para>To open a cec device applications call <function>open()</function> | |
| 55 | − with the desired device name. The function has no side effects; the device | |
| 56 | − configuration remain unchanged.</para> | |
| 57 | − <para>When the device is opened in read-only mode, attempts to modify its | |
| 58 | − configuration will result in an error, and <varname>errno</varname> will be | |
| 59 | − set to <errorcode>EBADF</errorcode>.</para> | |
| 60 | − </refsect1> | |
| 61 | − <refsect1> | |
| 62 | − <title>Return Value</title> | |
| 63 | − | |
| 64 | − <para><function>open</function> returns the new file descriptor on success. | |
| 65 | − On error, -1 is returned, and <varname>errno</varname> is set appropriately. | |
| 66 | − Possible error codes include:</para> | |
| 67 | − | |
| 68 | − <variablelist> | |
| 69 | − <varlistentry> | |
| 70 | − <term><errorcode>EACCES</errorcode></term> | |
| 71 | − <listitem> | |
| 72 | − <para>The requested access to the file is not allowed.</para> | |
| 73 | − </listitem> | |
| 74 | − </varlistentry> | |
| 75 | − <varlistentry> | |
| 76 | − <term><errorcode>EMFILE</errorcode></term> | |
| 77 | − <listitem> | |
| 78 | − <para>The process already has the maximum number of files open. | |
| 79 | − </para> | |
| 80 | − </listitem> | |
| 81 | − </varlistentry> | |
| 82 | − <varlistentry> | |
| 83 | − <term><errorcode>ENFILE</errorcode></term> | |
| 84 | − <listitem> | |
| 85 | − <para>The system limit on the total number of open files has been | |
| 86 | − reached.</para> | |
| 87 | − </listitem> | |
| 88 | − </varlistentry> | |
| 89 | − <varlistentry> | |
| 90 | − <term><errorcode>ENOMEM</errorcode></term> | |
| 91 | − <listitem> | |
| 92 | − <para>Insufficient kernel memory was available.</para> | |
| 93 | − </listitem> | |
| 94 | − </varlistentry> | |
| 95 | − <varlistentry> | |
| 96 | − <term><errorcode>ENXIO</errorcode></term> | |
| 97 | − <listitem> | |
| 98 | − <para>No device corresponding to this device special file exists. | |
| 99 | − </para> | |
| 100 | − </listitem> | |
| 101 | − </varlistentry> | |
| 102 | − </variablelist> | |
| 103 | − </refsect1> | |
| 104 | −</refentry> | |
| @@ -1,94 +0,0 @@ | ||
| 1 | −<refentry id="cec-func-poll"> | |
| 2 | − <refmeta> | |
| 3 | − <refentrytitle>cec poll()</refentrytitle> | |
| 4 | − &manvol; | |
| 5 | − </refmeta> | |
| 6 | − | |
| 7 | − <refnamediv> | |
| 8 | − <refname>cec-poll</refname> | |
| 9 | − <refpurpose>Wait for some event on a file descriptor</refpurpose> | |
| 10 | − </refnamediv> | |
| 11 | − | |
| 12 | − <refsynopsisdiv> | |
| 13 | − <funcsynopsis> | |
| 14 | − <funcsynopsisinfo>#include <sys/poll.h></funcsynopsisinfo> | |
| 15 | − <funcprototype> | |
| 16 | − <funcdef>int <function>poll</function></funcdef> | |
| 17 | − <paramdef>struct pollfd *<parameter>ufds</parameter></paramdef> | |
| 18 | − <paramdef>unsigned int <parameter>nfds</parameter></paramdef> | |
| 19 | − <paramdef>int <parameter>timeout</parameter></paramdef> | |
| 20 | − </funcprototype> | |
| 21 | − </funcsynopsis> | |
| 22 | − </refsynopsisdiv> | |
| 23 | − | |
| 24 | − <refsect1> | |
| 25 | − <title>Description</title> | |
| 26 | − | |
| 27 | − <para> | |
| 28 | − Note: this documents the proposed CEC API. This API is not yet finalized and | |
| 29 | − is currently only available as a staging kernel module. | |
| 30 | − </para> | |
| 31 | − | |
| 32 | − <para>With the <function>poll()</function> function applications | |
| 33 | −can wait for CEC events.</para> | |
| 34 | − | |
| 35 | − <para>On success <function>poll()</function> returns the number of | |
| 36 | −file descriptors that have been selected (that is, file descriptors | |
| 37 | −for which the <structfield>revents</structfield> field of the | |
| 38 | −respective <structname>pollfd</structname> structure is non-zero). | |
| 39 | −CEC devices set the <constant>POLLIN</constant> and | |
| 40 | −<constant>POLLRDNORM</constant> flags in the | |
| 41 | −<structfield>revents</structfield> field if there are messages in the | |
| 42 | −receive queue. If the transmit queue has room for new messages, the | |
| 43 | −<constant>POLLOUT</constant> and <constant>POLLWRNORM</constant> | |
| 44 | −flags are set. If there are events in the event queue, then the | |
| 45 | −<constant>POLLPRI</constant> flag is set. | |
| 46 | −When the function timed out it returns a value of zero, on | |
| 47 | −failure it returns <returnvalue>-1</returnvalue> and the | |
| 48 | −<varname>errno</varname> variable is set appropriately. | |
| 49 | −</para> | |
| 50 | − | |
| 51 | − <para>For more details see the | |
| 52 | −<function>poll()</function> manual page.</para> | |
| 53 | − </refsect1> | |
| 54 | − | |
| 55 | − <refsect1> | |
| 56 | − <title>Return Value</title> | |
| 57 | − | |
| 58 | − <para>On success, <function>poll()</function> returns the number | |
| 59 | −structures which have non-zero <structfield>revents</structfield> | |
| 60 | −fields, or zero if the call timed out. On error | |
| 61 | −<returnvalue>-1</returnvalue> is returned, and the | |
| 62 | −<varname>errno</varname> variable is set appropriately:</para> | |
| 63 | − | |
| 64 | − <variablelist> | |
| 65 | − <varlistentry> | |
| 66 | − <term><errorcode>EBADF</errorcode></term> | |
| 67 | − <listitem> | |
| 68 | − <para>One or more of the <parameter>ufds</parameter> members | |
| 69 | −specify an invalid file descriptor.</para> | |
| 70 | − </listitem> | |
| 71 | − </varlistentry> | |
| 72 | − <varlistentry> | |
| 73 | − <term><errorcode>EFAULT</errorcode></term> | |
| 74 | − <listitem> | |
| 75 | − <para><parameter>ufds</parameter> references an inaccessible | |
| 76 | −memory area.</para> | |
| 77 | − </listitem> | |
| 78 | − </varlistentry> | |
| 79 | − <varlistentry> | |
| 80 | − <term><errorcode>EINTR</errorcode></term> | |
| 81 | − <listitem> | |
| 82 | − <para>The call was interrupted by a signal.</para> | |
| 83 | − </listitem> | |
| 84 | − </varlistentry> | |
| 85 | − <varlistentry> | |
| 86 | − <term><errorcode>EINVAL</errorcode></term> | |
| 87 | − <listitem> | |
| 88 | − <para>The <parameter>nfds</parameter> argument is greater | |
| 89 | −than <constant>OPEN_MAX</constant>.</para> | |
| 90 | − </listitem> | |
| 91 | − </varlistentry> | |
| 92 | − </variablelist> | |
| 93 | − </refsect1> | |
| 94 | −</refentry> | |
| @@ -1,151 +0,0 @@ | ||
| 1 | −<refentry id="cec-ioc-adap-g-caps"> | |
| 2 | − <refmeta> | |
| 3 | − <refentrytitle>ioctl CEC_ADAP_G_CAPS</refentrytitle> | |
| 4 | − &manvol; | |
| 5 | − </refmeta> | |
| 6 | − | |
| 7 | − <refnamediv> | |
| 8 | − <refname>CEC_ADAP_G_CAPS</refname> | |
| 9 | − <refpurpose>Query device capabilities</refpurpose> | |
| 10 | − </refnamediv> | |
| 11 | − | |
| 12 | − <refsynopsisdiv> | |
| 13 | − <funcsynopsis> | |
| 14 | − <funcprototype> | |
| 15 | − <funcdef>int <function>ioctl</function></funcdef> | |
| 16 | − <paramdef>int <parameter>fd</parameter></paramdef> | |
| 17 | − <paramdef>int <parameter>request</parameter></paramdef> | |
| 18 | − <paramdef>struct cec_caps *<parameter>argp</parameter></paramdef> | |
| 19 | − </funcprototype> | |
| 20 | − </funcsynopsis> | |
| 21 | − </refsynopsisdiv> | |
| 22 | − | |
| 23 | − <refsect1> | |
| 24 | − <title>Arguments</title> | |
| 25 | − | |
| 26 | − <variablelist> | |
| 27 | − <varlistentry> | |
| 28 | − <term><parameter>fd</parameter></term> | |
| 29 | − <listitem> | |
| 30 | − <para>File descriptor returned by | |
| 31 | − <link linkend='cec-func-open'><function>open()</function></link>.</para> | |
| 32 | − </listitem> | |
| 33 | − </varlistentry> | |
| 34 | − <varlistentry> | |
| 35 | − <term><parameter>request</parameter></term> | |
| 36 | − <listitem> | |
| 37 | − <para>CEC_ADAP_G_CAPS</para> | |
| 38 | − </listitem> | |
| 39 | − </varlistentry> | |
| 40 | − <varlistentry> | |
| 41 | − <term><parameter>argp</parameter></term> | |
| 42 | − <listitem> | |
| 43 | − <para></para> | |
| 44 | − </listitem> | |
| 45 | − </varlistentry> | |
| 46 | − </variablelist> | |
| 47 | − </refsect1> | |
| 48 | − | |
| 49 | − <refsect1> | |
| 50 | − <title>Description</title> | |
| 51 | − | |
| 52 | − <para> | |
| 53 | − Note: this documents the proposed CEC API. This API is not yet finalized and | |
| 54 | − is currently only available as a staging kernel module. | |
| 55 | − </para> | |
| 56 | − | |
| 57 | − <para>All cec devices must support the <constant>CEC_ADAP_G_CAPS</constant> | |
| 58 | − ioctl. To query device information, applications call the ioctl with a | |
| 59 | − pointer to a &cec-caps;. The driver fills the structure and returns | |
| 60 | − the information to the application. | |
| 61 | − The ioctl never fails.</para> | |
| 62 | − | |
| 63 | − <table pgwide="1" frame="none" id="cec-caps"> | |
| 64 | − <title>struct <structname>cec_caps</structname></title> | |
| 65 | − <tgroup cols="3"> | |
| 66 | − &cs-str; | |
| 67 | − <tbody valign="top"> | |
| 68 | − <row> | |
| 69 | − <entry>char</entry> | |
| 70 | − <entry><structfield>driver[32]</structfield></entry> | |
| 71 | − <entry>The name of the cec adapter driver.</entry> | |
| 72 | − </row> | |
| 73 | − <row> | |
| 74 | − <entry>char</entry> | |
| 75 | − <entry><structfield>name[32]</structfield></entry> | |
| 76 | − <entry>The name of this CEC adapter. The combination <structfield>driver</structfield> | |
| 77 | − and <structfield>name</structfield> must be unique.</entry> | |
| 78 | − </row> | |
| 79 | − <row> | |
| 80 | − <entry>__u32</entry> | |
| 81 | − <entry><structfield>capabilities</structfield></entry> | |
| 82 | − <entry>The capabilities of the CEC adapter, see <xref | |
| 83 | − linkend="cec-capabilities" />.</entry> | |
| 84 | − </row> | |
| 85 | − <row> | |
| 86 | − <entry>__u32</entry> | |
| 87 | − <entry><structfield>version</structfield></entry> | |
| 88 | − <entry>CEC Framework API version, formatted with the | |
| 89 | − <constant>KERNEL_VERSION()</constant> macro.</entry> | |
| 90 | − </row> | |
| 91 | − </tbody> | |
| 92 | − </tgroup> | |
| 93 | − </table> | |
| 94 | − | |
| 95 | − <table pgwide="1" frame="none" id="cec-capabilities"> | |
| 96 | − <title>CEC Capabilities Flags</title> | |
| 97 | − <tgroup cols="3"> | |
| 98 | − &cs-def; | |
| 99 | − <tbody valign="top"> | |
| 100 | − <row> | |
| 101 | − <entry><constant>CEC_CAP_PHYS_ADDR</constant></entry> | |
| 102 | − <entry>0x00000001</entry> | |
| 103 | − <entry>Userspace has to configure the physical address by | |
| 104 | − calling &CEC-ADAP-S-PHYS-ADDR;. If this capability isn't set, | |
| 105 | − then setting the physical address is handled by the kernel | |
| 106 | − whenever the EDID is set (for an HDMI receiver) or read (for | |
| 107 | − an HDMI transmitter).</entry> | |
| 108 | − </row> | |
| 109 | − <row> | |
| 110 | − <entry><constant>CEC_CAP_LOG_ADDRS</constant></entry> | |
| 111 | − <entry>0x00000002</entry> | |
| 112 | − <entry>Userspace has to configure the logical addresses by | |
| 113 | − calling &CEC-ADAP-S-LOG-ADDRS;. If this capability isn't set, | |
| 114 | − then the kernel will have configured this.</entry> | |
| 115 | − </row> | |
| 116 | − <row> | |
| 117 | − <entry><constant>CEC_CAP_TRANSMIT</constant></entry> | |
| 118 | − <entry>0x00000004</entry> | |
| 119 | − <entry>Userspace can transmit CEC messages by calling &CEC-TRANSMIT;. This | |
| 120 | − implies that userspace can be a follower as well, since being able to | |
| 121 | − transmit messages is a prerequisite of becoming a follower. If this | |
| 122 | − capability isn't set, then the kernel will handle all CEC transmits | |
| 123 | − and process all CEC messages it receives. | |
| 124 | − </entry> | |
| 125 | − </row> | |
| 126 | − <row> | |
| 127 | − <entry><constant>CEC_CAP_PASSTHROUGH</constant></entry> | |
| 128 | − <entry>0x00000008</entry> | |
| 129 | − <entry>Userspace can use the passthrough mode by | |
| 130 | − calling &CEC-S-MODE;.</entry> | |
| 131 | − </row> | |
| 132 | − <row> | |
| 133 | − <entry><constant>CEC_CAP_RC</constant></entry> | |
| 134 | − <entry>0x00000010</entry> | |
| 135 | − <entry>This adapter supports the remote control protocol.</entry> | |
| 136 | − </row> | |
| 137 | − <row> | |
| 138 | − <entry><constant>CEC_CAP_MONITOR_ALL</constant></entry> | |
| 139 | − <entry>0x00000020</entry> | |
| 140 | − <entry>The CEC hardware can monitor all messages, not just directed and | |
| 141 | − broadcast messages.</entry> | |
| 142 | − </row> | |
| 143 | − </tbody> | |
| 144 | − </tgroup> | |
| 145 | − </table> | |
| 146 | − </refsect1> | |
| 147 | − | |
| 148 | − <refsect1> | |
| 149 | − &return-value; | |
| 150 | − </refsect1> | |
| 151 | −</refentry> | |
| @@ -1,329 +0,0 @@ | ||
| 1 | −<refentry id="cec-ioc-adap-g-log-addrs"> | |
| 2 | − <refmeta> | |
| 3 | − <refentrytitle>ioctl CEC_ADAP_G_LOG_ADDRS, CEC_ADAP_S_LOG_ADDRS</refentrytitle> | |
| 4 | − &manvol; | |
| 5 | − </refmeta> | |
| 6 | − | |
| 7 | − <refnamediv> | |
| 8 | − <refname>CEC_ADAP_G_LOG_ADDRS</refname> | |
| 9 | − <refname>CEC_ADAP_S_LOG_ADDRS</refname> | |
| 10 | − <refpurpose>Get or set the logical addresses</refpurpose> | |
| 11 | − </refnamediv> | |
| 12 | − | |
| 13 | − <refsynopsisdiv> | |
| 14 | − <funcsynopsis> | |
| 15 | − <funcprototype> | |
| 16 | − <funcdef>int <function>ioctl</function></funcdef> | |
| 17 | − <paramdef>int <parameter>fd</parameter></paramdef> | |
| 18 | − <paramdef>int <parameter>request</parameter></paramdef> | |
| 19 | − <paramdef>struct cec_log_addrs *<parameter>argp</parameter></paramdef> | |
| 20 | − </funcprototype> | |
| 21 | − </funcsynopsis> | |
| 22 | − </refsynopsisdiv> | |
| 23 | − | |
| 24 | − <refsect1> | |
| 25 | − <title>Arguments</title> | |
| 26 | − | |
| 27 | − <variablelist> | |
| 28 | − <varlistentry> | |
| 29 | − <term><parameter>fd</parameter></term> | |
| 30 | − <listitem> | |
| 31 | − <para>File descriptor returned by | |
| 32 | − <link linkend='cec-func-open'><function>open()</function></link>.</para> | |
| 33 | − </listitem> | |
| 34 | − </varlistentry> | |
| 35 | − <varlistentry> | |
| 36 | − <term><parameter>request</parameter></term> | |
| 37 | − <listitem> | |
| 38 | − <para>CEC_ADAP_G_LOG_ADDRS, CEC_ADAP_S_LOG_ADDRS</para> | |
| 39 | − </listitem> | |
| 40 | − </varlistentry> | |
| 41 | − <varlistentry> | |
| 42 | − <term><parameter>argp</parameter></term> | |
| 43 | − <listitem> | |
| 44 | − <para></para> | |
| 45 | − </listitem> | |
| 46 | − </varlistentry> | |
| 47 | − </variablelist> | |
| 48 | − </refsect1> | |
| 49 | − | |
| 50 | − <refsect1> | |
| 51 | − <title>Description</title> | |
| 52 | − | |
| 53 | − <para> | |
| 54 | − Note: this documents the proposed CEC API. This API is not yet finalized and | |
| 55 | − is currently only available as a staging kernel module. | |
| 56 | − </para> | |
| 57 | − | |
| 58 | − <para>To query the current CEC logical addresses, applications call the | |
| 59 | −<constant>CEC_ADAP_G_LOG_ADDRS</constant> ioctl with a pointer to a | |
| 60 | −<structname>cec_log_addrs</structname> structure where the drivers stores the | |
| 61 | −logical addresses.</para> | |
| 62 | − | |
| 63 | − <para>To set new logical addresses, applications fill in struct <structname>cec_log_addrs</structname> | |
| 64 | −and call the <constant>CEC_ADAP_S_LOG_ADDRS</constant> ioctl with a pointer to this struct. | |
| 65 | −The <constant>CEC_ADAP_S_LOG_ADDRS</constant> ioctl is only available if | |
| 66 | −<constant>CEC_CAP_LOG_ADDRS</constant> is set (&ENOTTY; is returned otherwise). This ioctl will block until all | |
| 67 | −requested logical addresses have been claimed. <constant>CEC_ADAP_S_LOG_ADDRS</constant> | |
| 68 | −can only be called by a file handle in initiator mode (see &CEC-S-MODE;).</para> | |
| 69 | − | |
| 70 | − <table pgwide="1" frame="none" id="cec-log-addrs"> | |
| 71 | − <title>struct <structname>cec_log_addrs</structname></title> | |
| 72 | − <tgroup cols="3"> | |
| 73 | − &cs-str; | |
| 74 | − <tbody valign="top"> | |
| 75 | − <row> | |
| 76 | − <entry>__u8</entry> | |
| 77 | − <entry><structfield>log_addr</structfield>[CEC_MAX_LOG_ADDRS]</entry> | |
| 78 | − <entry>The actual logical addresses that were claimed. This is set by the | |
| 79 | − driver. If no logical address could be claimed, then it is set to | |
| 80 | − <constant>CEC_LOG_ADDR_INVALID</constant>. If this adapter is Unregistered, | |
| 81 | − then <structfield>log_addr[0]</structfield> is set to 0xf and all others to | |
| 82 | − <constant>CEC_LOG_ADDR_INVALID</constant>.</entry> | |
| 83 | − </row> | |
| 84 | − <row> | |
| 85 | − <entry>__u16</entry> | |
| 86 | − <entry><structfield>log_addr_mask</structfield></entry> | |
| 87 | − <entry>The bitmask of all logical addresses this adapter has claimed. | |
| 88 | − If this adapter is Unregistered then <structfield>log_addr_mask</structfield> | |
| 89 | − sets bit 15 and clears all other bits. If this adapter is not configured at all, then | |
| 90 | − <structfield>log_addr_mask</structfield> is set to 0. Set by the driver.</entry> | |
| 91 | − </row> | |
| 92 | − <row> | |
| 93 | − <entry>__u8</entry> | |
| 94 | − <entry><structfield>cec_version</structfield></entry> | |
| 95 | − <entry>The CEC version that this adapter shall use. See | |
| 96 | − <xref linkend="cec-versions" />. | |
| 97 | − Used to implement the <constant>CEC_MSG_CEC_VERSION</constant> and | |
| 98 | − <constant>CEC_MSG_REPORT_FEATURES</constant> messages. Note that | |
| 99 | − <constant>CEC_OP_CEC_VERSION_1_3A</constant> is not allowed | |
| 100 | − by the CEC framework. | |
| 101 | − </entry> | |
| 102 | − </row> | |
| 103 | − <row> | |
| 104 | − <entry>__u8</entry> | |
| 105 | − <entry><structfield>num_log_addrs</structfield></entry> | |
| 106 | − <entry>Number of logical addresses to set up. Must be ≤ | |
| 107 | − <structfield>available_log_addrs</structfield> as returned by | |
| 108 | − &CEC-ADAP-G-CAPS;. All arrays in this structure are only filled up to | |
| 109 | − index <structfield>available_log_addrs</structfield>-1. The remaining | |
| 110 | − array elements will be ignored. Note that the CEC 2.0 standard allows | |
| 111 | − for a maximum of 2 logical addresses, although some hardware has support | |
| 112 | − for more. <constant>CEC_MAX_LOG_ADDRS</constant> is 4. The driver will | |
| 113 | − return the actual number of logical addresses it could claim, which may | |
| 114 | − be less than what was requested. If this field is set to 0, then the | |
| 115 | − CEC adapter shall clear all claimed logical addresses and all other | |
| 116 | − fields will be ignored.</entry> | |
| 117 | − </row> | |
| 118 | − <row> | |
| 119 | − <entry>__u32</entry> | |
| 120 | − <entry><structfield>vendor_id</structfield></entry> | |
| 121 | − <entry>The vendor ID is a 24-bit number that identifies the specific | |
| 122 | − vendor or entity. Based on this ID vendor specific commands may be | |
| 123 | − defined. If you do not want a vendor ID then set it to | |
| 124 | − <constant>CEC_VENDOR_ID_NONE</constant>.</entry> | |
| 125 | − </row> | |
| 126 | − <row> | |
| 127 | − <entry>__u32</entry> | |
| 128 | − <entry><structfield>flags</structfield></entry> | |
| 129 | − <entry>Flags. No flags are defined yet, so set this to 0.</entry> | |
| 130 | − </row> | |
| 131 | − <row> | |
| 132 | − <entry>char</entry> | |
| 133 | − <entry><structfield>osd_name</structfield>[15]</entry> | |
| 134 | − <entry>The On-Screen Display name as is returned by the | |
| 135 | − <constant>CEC_MSG_SET_OSD_NAME</constant> message.</entry> | |
| 136 | − </row> | |
| 137 | − <row> | |
| 138 | − <entry>__u8</entry> | |
| 139 | − <entry><structfield>primary_device_type</structfield>[CEC_MAX_LOG_ADDRS]</entry> | |
| 140 | − <entry>Primary device type for each logical address. See | |
| 141 | − <xref linkend="cec-prim-dev-types" /> for possible types.</entry> | |
| 142 | − </row> | |
| 143 | − <row> | |
| 144 | − <entry>__u8</entry> | |
| 145 | − <entry><structfield>log_addr_type</structfield>[CEC_MAX_LOG_ADDRS]</entry> | |
| 146 | − <entry>Logical address types. See <xref linkend="cec-log-addr-types" /> for | |
| 147 | − possible types. The driver will update this with the actual logical address | |
| 148 | − type that it claimed (e.g. it may have to fallback to | |
| 149 | − <constant>CEC_LOG_ADDR_TYPE_UNREGISTERED</constant>).</entry> | |
| 150 | − </row> | |
| 151 | − <row> | |
| 152 | − <entry>__u8</entry> | |
| 153 | − <entry><structfield>all_device_types</structfield>[CEC_MAX_LOG_ADDRS]</entry> | |
| 154 | − <entry>CEC 2.0 specific: all device types. See <xref linkend="cec-all-dev-types-flags" />. | |
| 155 | − Used to implement the <constant>CEC_MSG_REPORT_FEATURES</constant> message. | |
| 156 | − This field is ignored if <structfield>cec_version</structfield> < | |
| 157 | − <constant>CEC_OP_CEC_VERSION_2_0</constant>.</entry> | |
| 158 | − </row> | |
| 159 | − <row> | |
| 160 | − <entry>__u8</entry> | |
| 161 | − <entry><structfield>features</structfield>[CEC_MAX_LOG_ADDRS][12]</entry> | |
| 162 | − <entry>Features for each logical address. Used to implement the | |
| 163 | − <constant>CEC_MSG_REPORT_FEATURES</constant> message. The 12 bytes include | |
| 164 | − both the RC Profile and the Device Features. | |
| 165 | − This field is ignored if <structfield>cec_version</structfield> < | |
| 166 | − <constant>CEC_OP_CEC_VERSION_2_0</constant>.</entry> | |
| 167 | − </row> | |
| 168 | − </tbody> | |
| 169 | − </tgroup> | |
| 170 | − </table> | |
| 171 | − | |
| 172 | − <table pgwide="1" frame="none" id="cec-versions"> | |
| 173 | − <title>CEC Versions</title> | |
| 174 | − <tgroup cols="3"> | |
| 175 | − &cs-def; | |
| 176 | − <tbody valign="top"> | |
| 177 | − <row> | |
| 178 | − <entry><constant>CEC_OP_CEC_VERSION_1_3A</constant></entry> | |
| 179 | − <entry>4</entry> | |
| 180 | − <entry>CEC version according to the HDMI 1.3a standard.</entry> | |
| 181 | − </row> | |
| 182 | − <row> | |
| 183 | − <entry><constant>CEC_OP_CEC_VERSION_1_4B</constant></entry> | |
| 184 | − <entry>5</entry> | |
| 185 | − <entry>CEC version according to the HDMI 1.4b standard.</entry> | |
| 186 | − </row> | |
| 187 | − <row> | |
| 188 | − <entry><constant>CEC_OP_CEC_VERSION_2_0</constant></entry> | |
| 189 | − <entry>6</entry> | |
| 190 | − <entry>CEC version according to the HDMI 2.0 standard.</entry> | |
| 191 | − </row> | |
| 192 | − </tbody> | |
| 193 | − </tgroup> | |
| 194 | − </table> | |
| 195 | − | |
| 196 | − <table pgwide="1" frame="none" id="cec-prim-dev-types"> | |
| 197 | − <title>CEC Primary Device Types</title> | |
| 198 | − <tgroup cols="3"> | |
| 199 | − &cs-def; | |
| 200 | − <tbody valign="top"> | |
| 201 | − <row> | |
| 202 | − <entry><constant>CEC_OP_PRIM_DEVTYPE_TV</constant></entry> | |
| 203 | − <entry>0</entry> | |
| 204 | − <entry>Use for a TV.</entry> | |
| 205 | − </row> | |
| 206 | − <row> | |
| 207 | − <entry><constant>CEC_OP_PRIM_DEVTYPE_RECORD</constant></entry> | |
| 208 | − <entry>1</entry> | |
| 209 | − <entry>Use for a recording device.</entry> | |
| 210 | − </row> | |
| 211 | − <row> | |
| 212 | − <entry><constant>CEC_OP_PRIM_DEVTYPE_TUNER</constant></entry> | |
| 213 | − <entry>3</entry> | |
| 214 | − <entry>Use for a device with a tuner.</entry> | |
| 215 | − </row> | |
| 216 | − <row> | |
| 217 | − <entry><constant>CEC_OP_PRIM_DEVTYPE_PLAYBACK</constant></entry> | |
| 218 | − <entry>4</entry> | |
| 219 | − <entry>Use for a playback device.</entry> | |
| 220 | − </row> | |
| 221 | − <row> | |
| 222 | − <entry><constant>CEC_OP_PRIM_DEVTYPE_AUDIOSYSTEM</constant></entry> | |
| 223 | − <entry>5</entry> | |
| 224 | − <entry>Use for an audio system (e.g. an audio/video receiver).</entry> | |
| 225 | − </row> | |
| 226 | − <row> | |
| 227 | − <entry><constant>CEC_OP_PRIM_DEVTYPE_SWITCH</constant></entry> | |
| 228 | − <entry>6</entry> | |
| 229 | − <entry>Use for a CEC switch.</entry> | |
| 230 | − </row> | |
| 231 | − <row> | |
| 232 | − <entry><constant>CEC_OP_PRIM_DEVTYPE_VIDEOPROC</constant></entry> | |
| 233 | − <entry>7</entry> | |
| 234 | − <entry>Use for a video processor device.</entry> | |
| 235 | − </row> | |
| 236 | − </tbody> | |
| 237 | − </tgroup> | |
| 238 | − </table> | |
| 239 | − | |
| 240 | − <table pgwide="1" frame="none" id="cec-log-addr-types"> | |
| 241 | − <title>CEC Logical Address Types</title> | |
| 242 | − <tgroup cols="3"> | |
| 243 | − &cs-def; | |
| 244 | − <tbody valign="top"> | |
| 245 | − <row> | |
| 246 | − <entry><constant>CEC_LOG_ADDR_TYPE_TV</constant></entry> | |
| 247 | − <entry>0</entry> | |
| 248 | − <entry>Use for a TV.</entry> | |
| 249 | − </row> | |
| 250 | − <row> | |
| 251 | − <entry><constant>CEC_LOG_ADDR_TYPE_RECORD</constant></entry> | |
| 252 | − <entry>1</entry> | |
| 253 | − <entry>Use for a recording device.</entry> | |
| 254 | − </row> | |
| 255 | − <row> | |
| 256 | − <entry><constant>CEC_LOG_ADDR_TYPE_TUNER</constant></entry> | |
| 257 | − <entry>2</entry> | |
| 258 | − <entry>Use for a tuner device.</entry> | |
| 259 | − </row> | |
| 260 | − <row> | |
| 261 | − <entry><constant>CEC_LOG_ADDR_TYPE_PLAYBACK</constant></entry> | |
| 262 | − <entry>3</entry> | |
| 263 | − <entry>Use for a playback device.</entry> | |
| 264 | − </row> | |
| 265 | − <row> | |
| 266 | − <entry><constant>CEC_LOG_ADDR_TYPE_AUDIOSYSTEM</constant></entry> | |
| 267 | − <entry>4</entry> | |
| 268 | − <entry>Use for an audio system device.</entry> | |
| 269 | − </row> | |
| 270 | − <row> | |
| 271 | − <entry><constant>CEC_LOG_ADDR_TYPE_SPECIFIC</constant></entry> | |
| 272 | − <entry>5</entry> | |
| 273 | − <entry>Use for a second TV or for a video processor device.</entry> | |
| 274 | − </row> | |
| 275 | − <row> | |
| 276 | − <entry><constant>CEC_LOG_ADDR_TYPE_UNREGISTERED</constant></entry> | |
| 277 | − <entry>6</entry> | |
| 278 | − <entry>Use this if you just want to remain unregistered. | |
| 279 | − Used for pure CEC switches or CDC-only devices (CDC: | |
| 280 | − Capability Discovery and Control).</entry> | |
| 281 | − </row> | |
| 282 | − </tbody> | |
| 283 | − </tgroup> | |
| 284 | − </table> | |
| 285 | − | |
| 286 | − <table pgwide="1" frame="none" id="cec-all-dev-types-flags"> | |
| 287 | − <title>CEC All Device Types Flags</title> | |
| 288 | − <tgroup cols="3"> | |
| 289 | − &cs-def; | |
| 290 | − <tbody valign="top"> | |
| 291 | − <row> | |
| 292 | − <entry><constant>CEC_OP_ALL_DEVTYPE_TV</constant></entry> | |
| 293 | − <entry>0x80</entry> | |
| 294 | − <entry>This supports the TV type.</entry> | |
| 295 | − </row> | |
| 296 | − <row> | |
| 297 | − <entry><constant>CEC_OP_ALL_DEVTYPE_RECORD</constant></entry> | |
| 298 | − <entry>0x40</entry> | |
| 299 | − <entry>This supports the Recording type.</entry> | |
| 300 | − </row> | |
| 301 | − <row> | |
| 302 | − <entry><constant>CEC_OP_ALL_DEVTYPE_TUNER</constant></entry> | |
| 303 | − <entry>0x20</entry> | |
| 304 | − <entry>This supports the Tuner type.</entry> | |
| 305 | − </row> | |
| 306 | − <row> | |
| 307 | − <entry><constant>CEC_OP_ALL_DEVTYPE_PLAYBACK</constant></entry> | |
| 308 | − <entry>0x10</entry> | |
| 309 | − <entry>This supports the Playback type.</entry> | |
| 310 | − </row> | |
| 311 | − <row> | |
| 312 | − <entry><constant>CEC_OP_ALL_DEVTYPE_AUDIOSYSTEM</constant></entry> | |
| 313 | − <entry>0x08</entry> | |
| 314 | − <entry>This supports the Audio System type.</entry> | |
| 315 | − </row> | |
| 316 | − <row> | |
| 317 | − <entry><constant>CEC_OP_ALL_DEVTYPE_SWITCH</constant></entry> | |
| 318 | − <entry>0x04</entry> | |
| 319 | − <entry>This supports the CEC Switch or Video Processing type.</entry> | |
| 320 | − </row> | |
| 321 | − </tbody> | |
| 322 | − </tgroup> | |
| 323 | − </table> | |
| 324 | − </refsect1> | |
| 325 | − | |
| 326 | − <refsect1> | |
| 327 | − &return-value; | |
| 328 | − </refsect1> | |
| 329 | −</refentry> | |
| @@ -1,86 +0,0 @@ | ||
| 1 | −<refentry id="cec-ioc-adap-g-phys-addr"> | |
| 2 | − <refmeta> | |
| 3 | − <refentrytitle>ioctl CEC_ADAP_G_PHYS_ADDR, CEC_ADAP_S_PHYS_ADDR</refentrytitle> | |
| 4 | − &manvol; | |
| 5 | − </refmeta> | |
| 6 | − | |
| 7 | − <refnamediv> | |
| 8 | − <refname>CEC_ADAP_G_PHYS_ADDR</refname> | |
| 9 | − <refname>CEC_ADAP_S_PHYS_ADDR</refname> | |
| 10 | − <refpurpose>Get or set the physical address</refpurpose> | |
| 11 | − </refnamediv> | |
| 12 | − | |
| 13 | − <refsynopsisdiv> | |
| 14 | − <funcsynopsis> | |
| 15 | − <funcprototype> | |
| 16 | − <funcdef>int <function>ioctl</function></funcdef> | |
| 17 | − <paramdef>int <parameter>fd</parameter></paramdef> | |
| 18 | − <paramdef>int <parameter>request</parameter></paramdef> | |
| 19 | − <paramdef>__u16 *<parameter>argp</parameter></paramdef> | |
| 20 | − </funcprototype> | |
| 21 | − </funcsynopsis> | |
| 22 | − </refsynopsisdiv> | |
| 23 | − | |
| 24 | − <refsect1> | |
| 25 | − <title>Arguments</title> | |
| 26 | − | |
| 27 | − <variablelist> | |
| 28 | − <varlistentry> | |
| 29 | − <term><parameter>fd</parameter></term> | |
| 30 | − <listitem> | |
| 31 | − <para>File descriptor returned by | |
| 32 | − <link linkend='cec-func-open'><function>open()</function></link>.</para> | |
| 33 | − </listitem> | |
| 34 | − </varlistentry> | |
| 35 | − <varlistentry> | |
| 36 | − <term><parameter>request</parameter></term> | |
| 37 | − <listitem> | |
| 38 | − <para>CEC_ADAP_G_PHYS_ADDR, CEC_ADAP_S_PHYS_ADDR</para> | |
| 39 | − </listitem> | |
| 40 | − </varlistentry> | |
| 41 | − <varlistentry> | |
| 42 | − <term><parameter>argp</parameter></term> | |
| 43 | − <listitem> | |
| 44 | − <para></para> | |
| 45 | − </listitem> | |
| 46 | − </varlistentry> | |
| 47 | − </variablelist> | |
| 48 | − </refsect1> | |
| 49 | − | |
| 50 | − <refsect1> | |
| 51 | − <title>Description</title> | |
| 52 | − | |
| 53 | − <para> | |
| 54 | − Note: this documents the proposed CEC API. This API is not yet finalized and | |
| 55 | − is currently only available as a staging kernel module. | |
| 56 | − </para> | |
| 57 | − | |
| 58 | − <para>To query the current physical address applications call the | |
| 59 | −<constant>CEC_ADAP_G_PHYS_ADDR</constant> ioctl with a pointer to an __u16 | |
| 60 | −where the driver stores the physical address.</para> | |
| 61 | − | |
| 62 | − <para>To set a new physical address applications store the physical address in | |
| 63 | −an __u16 and call the <constant>CEC_ADAP_S_PHYS_ADDR</constant> ioctl with a | |
| 64 | −pointer to this integer. <constant>CEC_ADAP_S_PHYS_ADDR</constant> is only | |
| 65 | −available if <constant>CEC_CAP_PHYS_ADDR</constant> is set (&ENOTTY; will be returned | |
| 66 | −otherwise). <constant>CEC_ADAP_S_PHYS_ADDR</constant> | |
| 67 | −can only be called by a file handle in initiator mode (see &CEC-S-MODE;), if not | |
| 68 | −&EBUSY; will be returned.</para> | |
| 69 | − | |
| 70 | − <para>The physical address is a 16-bit number where each group of 4 bits | |
| 71 | −represent a digit of the physical address a.b.c.d where the most significant | |
| 72 | −4 bits represent 'a'. The CEC root device (usually the TV) has address 0.0.0.0. | |
| 73 | −Every device that is hooked up to an input of the TV has address a.0.0.0 (where | |
| 74 | −'a' is ≥ 1), devices hooked up to those in turn have addresses a.b.0.0, etc. | |
| 75 | −So a topology of up to 5 devices deep is supported. The physical address a | |
| 76 | −device shall use is stored in the EDID of the sink.</para> | |
| 77 | − | |
| 78 | −<para>For example, the EDID for each HDMI input of the TV will have a different | |
| 79 | −physical address of the form a.0.0.0 that the sources will read out and use as | |
| 80 | −their physical address.</para> | |
| 81 | − </refsect1> | |
| 82 | − | |
| 83 | − <refsect1> | |
| 84 | − &return-value; | |
| 85 | − </refsect1> | |
| 86 | −</refentry> | |
| @@ -1,202 +0,0 @@ | ||
| 1 | −<refentry id="cec-ioc-g-event"> | |
| 2 | − <refmeta> | |
| 3 | − <refentrytitle>ioctl CEC_DQEVENT</refentrytitle> | |
| 4 | − &manvol; | |
| 5 | − </refmeta> | |
| 6 | − | |
| 7 | − <refnamediv> | |
| 8 | − <refname>CEC_DQEVENT</refname> | |
| 9 | − <refpurpose>Dequeue a CEC event</refpurpose> | |
| 10 | − </refnamediv> | |
| 11 | − | |
| 12 | − <refsynopsisdiv> | |
| 13 | − <funcsynopsis> | |
| 14 | − <funcprototype> | |
| 15 | − <funcdef>int <function>ioctl</function></funcdef> | |
| 16 | − <paramdef>int <parameter>fd</parameter></paramdef> | |
| 17 | − <paramdef>int <parameter>request</parameter></paramdef> | |
| 18 | − <paramdef>struct cec_event *<parameter>argp</parameter></paramdef> | |
| 19 | − </funcprototype> | |
| 20 | − </funcsynopsis> | |
| 21 | − </refsynopsisdiv> | |
| 22 | − | |
| 23 | − <refsect1> | |
| 24 | − <title>Arguments</title> | |
| 25 | − | |
| 26 | − <variablelist> | |
| 27 | − <varlistentry> | |
| 28 | − <term><parameter>fd</parameter></term> | |
| 29 | − <listitem> | |
| 30 | − <para>File descriptor returned by | |
| 31 | − <link linkend='cec-func-open'><function>open()</function></link>.</para> | |
| 32 | − </listitem> | |
| 33 | − </varlistentry> | |
| 34 | − <varlistentry> | |
| 35 | − <term><parameter>request</parameter></term> | |
| 36 | − <listitem> | |
| 37 | − <para>CEC_DQEVENT</para> | |
| 38 | − </listitem> | |
| 39 | − </varlistentry> | |
| 40 | − <varlistentry> | |
| 41 | − <term><parameter>argp</parameter></term> | |
| 42 | − <listitem> | |
| 43 | − <para></para> | |
| 44 | − </listitem> | |
| 45 | − </varlistentry> | |
| 46 | − </variablelist> | |
| 47 | − </refsect1> | |
| 48 | − | |
| 49 | − <refsect1> | |
| 50 | − <title>Description</title> | |
| 51 | − | |
| 52 | − <para> | |
| 53 | − Note: this documents the proposed CEC API. This API is not yet finalized and | |
| 54 | − is currently only available as a staging kernel module. | |
| 55 | − </para> | |
| 56 | − | |
| 57 | − <para>CEC devices can send asynchronous events. These can be retrieved by calling | |
| 58 | − the <constant>CEC_DQEVENT</constant> ioctl. If the file descriptor is in non-blocking | |
| 59 | − mode and no event is pending, then it will return -1 and set errno to the &EAGAIN;.</para> | |
| 60 | − | |
| 61 | − <para>The internal event queues are per-filehandle and per-event type. If there is | |
| 62 | − no more room in a queue then the last event is overwritten with the new one. This | |
| 63 | − means that intermediate results can be thrown away but that the latest event is always | |
| 64 | − available. This also means that is it possible to read two successive events that have | |
| 65 | − the same value (e.g. two CEC_EVENT_STATE_CHANGE events with the same state). In that | |
| 66 | − case the intermediate state changes were lost but it is guaranteed that the state | |
| 67 | − did change in between the two events.</para> | |
| 68 | − | |
| 69 | − <table pgwide="1" frame="none" id="cec-event-state-change"> | |
| 70 | − <title>struct <structname>cec_event_state_change</structname></title> | |
| 71 | − <tgroup cols="3"> | |
| 72 | − &cs-str; | |
| 73 | − <tbody valign="top"> | |
| 74 | − <row> | |
| 75 | − <entry>__u16</entry> | |
| 76 | − <entry><structfield>phys_addr</structfield></entry> | |
| 77 | − <entry>The current physical address.</entry> | |
| 78 | − </row> | |
| 79 | − <row> | |
| 80 | − <entry>__u16</entry> | |
| 81 | − <entry><structfield>log_addr_mask</structfield></entry> | |
| 82 | − <entry>The current set of claimed logical addresses.</entry> | |
| 83 | − </row> | |
| 84 | − </tbody> | |
| 85 | − </tgroup> | |
| 86 | − </table> | |
| 87 | − | |
| 88 | − <table pgwide="1" frame="none" id="cec-event-lost-msgs"> | |
| 89 | − <title>struct <structname>cec_event_lost_msgs</structname></title> | |
| 90 | − <tgroup cols="3"> | |
| 91 | − &cs-str; | |
| 92 | − <tbody valign="top"> | |
| 93 | − <row> | |
| 94 | − <entry>__u32</entry> | |
| 95 | − <entry><structfield>lost_msgs</structfield></entry> | |
| 96 | − <entry>Set to the number of lost messages since the filehandle | |
| 97 | − was opened or since the last time this event was dequeued for | |
| 98 | − this filehandle. The messages lost are the oldest messages. So | |
| 99 | − when a new message arrives and there is no more room, then the | |
| 100 | − oldest message is discarded to make room for the new one. The | |
| 101 | − internal size of the message queue guarantees that all messages | |
| 102 | − received in the last two seconds will be stored. Since messages | |
| 103 | − should be replied to within a second according to the CEC | |
| 104 | − specification, this is more than enough. | |
| 105 | − </entry> | |
| 106 | − </row> | |
| 107 | − </tbody> | |
| 108 | − </tgroup> | |
| 109 | − </table> | |
| 110 | − | |
| 111 | − <table pgwide="1" frame="none" id="cec-event"> | |
| 112 | − <title>struct <structname>cec_event</structname></title> | |
| 113 | − <tgroup cols="4"> | |
| 114 | − &cs-str; | |
| 115 | − <tbody valign="top"> | |
| 116 | − <row> | |
| 117 | − <entry>__u64</entry> | |
| 118 | − <entry><structfield>ts</structfield></entry> | |
| 119 | − <entry>Timestamp of the event in ns.</entry> | |
| 120 | − <entry></entry> | |
| 121 | − </row> | |
| 122 | − <row> | |
| 123 | − <entry>__u32</entry> | |
| 124 | − <entry><structfield>event</structfield></entry> | |
| 125 | − <entry>The CEC event type, see <xref linkend="cec-events" />.</entry> | |
| 126 | − <entry></entry> | |
| 127 | − </row> | |
| 128 | − <row> | |
| 129 | − <entry>__u32</entry> | |
| 130 | − <entry><structfield>flags</structfield></entry> | |
| 131 | − <entry>Event flags, see <xref linkend="cec-event-flags" />.</entry> | |
| 132 | − <entry></entry> | |
| 133 | − </row> | |
| 134 | − <row> | |
| 135 | − <entry>union</entry> | |
| 136 | − <entry>(anonymous)</entry> | |
| 137 | − <entry></entry> | |
| 138 | − <entry></entry> | |
| 139 | − </row> | |
| 140 | − <row> | |
| 141 | − <entry></entry> | |
| 142 | − <entry>struct cec_event_state_change</entry> | |
| 143 | − <entry><structfield>state_change</structfield></entry> | |
| 144 | − <entry>The new adapter state as sent by the <constant>CEC_EVENT_STATE_CHANGE</constant> | |
| 145 | − event.</entry> | |
| 146 | − </row> | |
| 147 | − <row> | |
| 148 | − <entry></entry> | |
| 149 | − <entry>struct cec_event_lost_msgs</entry> | |
| 150 | − <entry><structfield>lost_msgs</structfield></entry> | |
| 151 | − <entry>The number of lost messages as sent by the <constant>CEC_EVENT_LOST_MSGS</constant> | |
| 152 | − event.</entry> | |
| 153 | − </row> | |
| 154 | − </tbody> | |
| 155 | − </tgroup> | |
| 156 | − </table> | |
| 157 | − | |
| 158 | − <table pgwide="1" frame="none" id="cec-events"> | |
| 159 | − <title>CEC Events Types</title> | |
| 160 | − <tgroup cols="3"> | |
| 161 | − &cs-def; | |
| 162 | − <tbody valign="top"> | |
| 163 | − <row> | |
| 164 | − <entry><constant>CEC_EVENT_STATE_CHANGE</constant></entry> | |
| 165 | − <entry>1</entry> | |
| 166 | − <entry>Generated when the CEC Adapter's state changes. When open() is | |
| 167 | − called an initial event will be generated for that filehandle with the | |
| 168 | − CEC Adapter's state at that time. | |
| 169 | − </entry> | |
| 170 | − </row> | |
| 171 | − <row> | |
| 172 | − <entry><constant>CEC_EVENT_LOST_MSGS</constant></entry> | |
| 173 | − <entry>2</entry> | |
| 174 | − <entry>Generated if one or more CEC messages were lost because the | |
| 175 | − application didn't dequeue CEC messages fast enough.</entry> | |
| 176 | − </row> | |
| 177 | − </tbody> | |
| 178 | − </tgroup> | |
| 179 | − </table> | |
| 180 | − | |
| 181 | − <table pgwide="1" frame="none" id="cec-event-flags"> | |
| 182 | − <title>CEC Event Flags</title> | |
| 183 | − <tgroup cols="3"> | |
| 184 | − &cs-def; | |
| 185 | − <tbody valign="top"> | |
| 186 | − <row> | |
| 187 | − <entry><constant>CEC_EVENT_FL_INITIAL_VALUE</constant></entry> | |
| 188 | − <entry>1</entry> | |
| 189 | − <entry>Set for the initial events that are generated when the device is | |
| 190 | − opened. See the table above for which events do this. This allows | |
| 191 | − applications to learn the initial state of the CEC adapter at open() | |
| 192 | − time.</entry> | |
| 193 | − </row> | |
| 194 | − </tbody> | |
| 195 | − </tgroup> | |
| 196 | − </table> | |
| 197 | − </refsect1> | |
| 198 | − | |
| 199 | − <refsect1> | |
| 200 | − &return-value; | |
| 201 | − </refsect1> | |
| 202 | −</refentry> | |
| @@ -1,255 +0,0 @@ | ||
| 1 | −<refentry id="cec-ioc-g-mode"> | |
| 2 | − <refmeta> | |
| 3 | − <refentrytitle>ioctl CEC_G_MODE, CEC_S_MODE</refentrytitle> | |
| 4 | − &manvol; | |
| 5 | − </refmeta> | |
| 6 | − | |
| 7 | − <refnamediv> | |
| 8 | − <refname>CEC_G_MODE</refname> | |
| 9 | − <refname>CEC_S_MODE</refname> | |
| 10 | − <refpurpose>Get or set exclusive use of the CEC adapter</refpurpose> | |
| 11 | − </refnamediv> | |
| 12 | − | |
| 13 | − <refsynopsisdiv> | |
| 14 | − <funcsynopsis> | |
| 15 | − <funcprototype> | |
| 16 | − <funcdef>int <function>ioctl</function></funcdef> | |
| 17 | − <paramdef>int <parameter>fd</parameter></paramdef> | |
| 18 | − <paramdef>int <parameter>request</parameter></paramdef> | |
| 19 | − <paramdef>__u32 *<parameter>argp</parameter></paramdef> | |
| 20 | − </funcprototype> | |
| 21 | − </funcsynopsis> | |
| 22 | − </refsynopsisdiv> | |
| 23 | − | |
| 24 | − <refsect1> | |
| 25 | − <title>Arguments</title> | |
| 26 | − | |
| 27 | − <variablelist> | |
| 28 | − <varlistentry> | |
| 29 | − <term><parameter>fd</parameter></term> | |
| 30 | − <listitem> | |
| 31 | − <para>File descriptor returned by | |
| 32 | − <link linkend='cec-func-open'><function>open()</function></link>.</para> | |
| 33 | − </listitem> | |
| 34 | − </varlistentry> | |
| 35 | − <varlistentry> | |
| 36 | − <term><parameter>request</parameter></term> | |
| 37 | − <listitem> | |
| 38 | − <para>CEC_G_MODE, CEC_S_MODE</para> | |
| 39 | − </listitem> | |
| 40 | − </varlistentry> | |
| 41 | − <varlistentry> | |
| 42 | − <term><parameter>argp</parameter></term> | |
| 43 | − <listitem> | |
| 44 | − <para></para> | |
| 45 | − </listitem> | |
| 46 | − </varlistentry> | |
| 47 | − </variablelist> | |
| 48 | − </refsect1> | |
| 49 | − | |
| 50 | − <refsect1> | |
| 51 | − <title>Description</title> | |
| 52 | − | |
| 53 | − <para> | |
| 54 | − Note: this documents the proposed CEC API. This API is not yet finalized and | |
| 55 | − is currently only available as a staging kernel module. | |
| 56 | − </para> | |
| 57 | − | |
| 58 | − <para>By default any filehandle can use &CEC-TRANSMIT; and &CEC-RECEIVE;, but | |
| 59 | −in order to prevent applications from stepping on each others toes it must be possible | |
| 60 | −to obtain exclusive access to the CEC adapter. This ioctl sets the filehandle | |
| 61 | −to initiator and/or follower mode which can be exclusive depending on the chosen | |
| 62 | −mode. The initiator is the filehandle that is used | |
| 63 | −to initiate messages, i.e. it commands other CEC devices. The follower is the filehandle | |
| 64 | −that receives messages sent to the CEC adapter and processes them. The same filehandle | |
| 65 | −can be both initiator and follower, or this role can be taken by two different | |
| 66 | −filehandles.</para> | |
| 67 | − | |
| 68 | − <para>When a CEC message is received, then the CEC framework will decide how | |
| 69 | −it will be processed. If the message is a reply to an earlier transmitted message, | |
| 70 | −then the reply is sent back to the filehandle that is waiting for it. In addition | |
| 71 | −the CEC framework will process it.</para> | |
| 72 | − | |
| 73 | − <para>If the message is not a reply, then the CEC framework will process it | |
| 74 | −first. If there is no follower, then the message is just discarded and a feature | |
| 75 | −abort is sent back to the initiator if the framework couldn't process it. If there | |
| 76 | −is a follower, then the message is passed on to the follower who will use | |
| 77 | −&CEC-RECEIVE; to dequeue the new message. The framework expects the follower to | |
| 78 | −make the right decisions.</para> | |
| 79 | − | |
| 80 | − <para>The CEC framework will process core messages unless requested otherwise | |
| 81 | −by the follower. The follower can enable the passthrough mode. In that case, the | |
| 82 | −CEC framework will pass on most core messages without processing them and | |
| 83 | −the follower will have to implement those messages. There are some messages | |
| 84 | −that the core will always process, regardless of the passthrough mode. See | |
| 85 | −<xref linkend="cec-core-processing" /> for details.</para> | |
| 86 | − | |
| 87 | − <para>If there is no initiator, then any CEC filehandle can use &CEC-TRANSMIT;. | |
| 88 | −If there is an exclusive initiator then only that initiator can call &CEC-TRANSMIT;. | |
| 89 | −The follower can of course always call &CEC-TRANSMIT;.</para> | |
| 90 | − | |
| 91 | − <para>Available initiator modes are:</para> | |
| 92 | − | |
| 93 | − <table pgwide="1" frame="none" id="cec-mode-initiator"> | |
| 94 | − <title>Initiator Modes</title> | |
| 95 | − <tgroup cols="3"> | |
| 96 | − &cs-def; | |
| 97 | − <tbody valign="top"> | |
| 98 | − <row> | |
| 99 | − <entry><constant>CEC_MODE_NO_INITIATOR</constant></entry> | |
| 100 | − <entry>0x0</entry> | |
| 101 | − <entry>This is not an initiator, i.e. it cannot transmit CEC messages | |
| 102 | − or make any other changes to the CEC adapter.</entry> | |
| 103 | − </row> | |
| 104 | − <row> | |
| 105 | − <entry><constant>CEC_MODE_INITIATOR</constant></entry> | |
| 106 | − <entry>0x1</entry> | |
| 107 | − <entry>This is an initiator (the default when the device is opened) and it | |
| 108 | − can transmit CEC messages and make changes to the CEC adapter, unless there | |
| 109 | − is an exclusive initiator.</entry> | |
| 110 | − </row> | |
| 111 | − <row> | |
| 112 | − <entry><constant>CEC_MODE_EXCL_INITIATOR</constant></entry> | |
| 113 | − <entry>0x2</entry> | |
| 114 | − <entry>This is an exclusive initiator and this file descriptor is the only one | |
| 115 | − that can transmit CEC messages and make changes to the CEC adapter. If someone | |
| 116 | − else is already the exclusive initiator then an attempt to become one will return | |
| 117 | − the &EBUSY; error.</entry> | |
| 118 | − </row> | |
| 119 | − </tbody> | |
| 120 | − </tgroup> | |
| 121 | − </table> | |
| 122 | − | |
| 123 | − <para>Available follower modes are:</para> | |
| 124 | − | |
| 125 | − <table pgwide="1" frame="none" id="cec-mode-follower"> | |
| 126 | − <title>Follower Modes</title> | |
| 127 | − <tgroup cols="3"> | |
| 128 | − &cs-def; | |
| 129 | − <tbody valign="top"> | |
| 130 | − <row> | |
| 131 | − <entry><constant>CEC_MODE_NO_FOLLOWER</constant></entry> | |
| 132 | − <entry>0x00</entry> | |
| 133 | − <entry>This is not a follower (the default when the device is opened).</entry> | |
| 134 | − </row> | |
| 135 | − <row> | |
| 136 | − <entry><constant>CEC_MODE_FOLLOWER</constant></entry> | |
| 137 | − <entry>0x10</entry> | |
| 138 | − <entry>This is a follower and it will receive CEC messages unless there is | |
| 139 | − an exclusive follower. You cannot become a follower if <constant>CEC_CAP_TRANSMIT</constant> | |
| 140 | − is not set or if <constant>CEC_MODE_NO_INITIATOR</constant> was specified, | |
| 141 | − &EINVAL; is returned in that case.</entry> | |
| 142 | − </row> | |
| 143 | − <row> | |
| 144 | − <entry><constant>CEC_MODE_EXCL_FOLLOWER</constant></entry> | |
| 145 | − <entry>0x20</entry> | |
| 146 | − <entry>This is an exclusive follower and only this file descriptor will receive | |
| 147 | − CEC messages for processing. If someone else is already the exclusive follower | |
| 148 | − then an attempt to become one will return the &EBUSY; error. You cannot become | |
| 149 | − a follower if <constant>CEC_CAP_TRANSMIT</constant> is not set or if | |
| 150 | − <constant>CEC_MODE_NO_INITIATOR</constant> was specified, &EINVAL; is returned | |
| 151 | − in that case.</entry> | |
| 152 | − </row> | |
| 153 | − <row> | |
| 154 | − <entry><constant>CEC_MODE_EXCL_FOLLOWER_PASSTHRU</constant></entry> | |
| 155 | − <entry>0x30</entry> | |
| 156 | − <entry>This is an exclusive follower and only this file descriptor will receive | |
| 157 | − CEC messages for processing. In addition it will put the CEC device into | |
| 158 | − passthrough mode, allowing the exclusive follower to handle most core messages | |
| 159 | − instead of relying on the CEC framework for that. If someone else is already the | |
| 160 | − exclusive follower then an attempt to become one will return the &EBUSY; error. | |
| 161 | − You cannot become a follower if <constant>CEC_CAP_TRANSMIT</constant> | |
| 162 | − is not set or if <constant>CEC_MODE_NO_INITIATOR</constant> was specified, | |
| 163 | − &EINVAL; is returned in that case.</entry> | |
| 164 | − </row> | |
| 165 | − <row> | |
| 166 | − <entry><constant>CEC_MODE_MONITOR</constant></entry> | |
| 167 | − <entry>0xe0</entry> | |
| 168 | − <entry>Put the file descriptor into monitor mode. Can only be used in combination | |
| 169 | − with <constant>CEC_MODE_NO_INITIATOR</constant>, otherwise &EINVAL; will be | |
| 170 | − returned. In monitor mode all messages this CEC device transmits and all messages | |
| 171 | − it receives (both broadcast messages and directed messages for one its logical | |
| 172 | − addresses) will be reported. This is very useful for debugging. This is only | |
| 173 | − allowed if the process has the <constant>CAP_NET_ADMIN</constant> | |
| 174 | − capability. If that is not set, then &EPERM; is returned.</entry> | |
| 175 | − </row> | |
| 176 | − <row> | |
| 177 | − <entry><constant>CEC_MODE_MONITOR_ALL</constant></entry> | |
| 178 | − <entry>0xf0</entry> | |
| 179 | − <entry>Put the file descriptor into 'monitor all' mode. Can only be used in combination | |
| 180 | − with <constant>CEC_MODE_NO_INITIATOR</constant>, otherwise &EINVAL; will be | |
| 181 | − returned. In 'monitor all' mode all messages this CEC device transmits and all messages | |
| 182 | − it receives, including directed messages for other CEC devices will be reported. This | |
| 183 | − is very useful for debugging, but not all devices support this. This mode requires that | |
| 184 | − the <constant>CEC_CAP_MONITOR_ALL</constant> capability is set, otherwise &EINVAL; is | |
| 185 | − returned. This is only allowed if the process has the <constant>CAP_NET_ADMIN</constant> | |
| 186 | − capability. If that is not set, then &EPERM; is returned.</entry> | |
| 187 | − </row> | |
| 188 | − </tbody> | |
| 189 | − </tgroup> | |
| 190 | − </table> | |
| 191 | − | |
| 192 | − <para>Core message processing details:</para> | |
| 193 | − | |
| 194 | − <table pgwide="1" frame="none" id="cec-core-processing"> | |
| 195 | − <title>Core Message Processing</title> | |
| 196 | − <tgroup cols="2"> | |
| 197 | − &cs-def; | |
| 198 | − <tbody valign="top"> | |
| 199 | − <row> | |
| 200 | − <entry><constant>CEC_MSG_GET_CEC_VERSION</constant></entry> | |
| 201 | − <entry>When in passthrough mode this message has to be handled by userspace, | |
| 202 | − otherwise the core will return the CEC version that was set with &CEC-ADAP-S-LOG-ADDRS;.</entry> | |
| 203 | − </row> | |
| 204 | − <row> | |
| 205 | − <entry><constant>CEC_MSG_GIVE_DEVICE_VENDOR_ID</constant></entry> | |
| 206 | − <entry>When in passthrough mode this message has to be handled by userspace, | |
| 207 | − otherwise the core will return the vendor ID that was set with &CEC-ADAP-S-LOG-ADDRS;.</entry> | |
| 208 | − </row> | |
| 209 | − <row> | |
| 210 | − <entry><constant>CEC_MSG_ABORT</constant></entry> | |
| 211 | − <entry>When in passthrough mode this message has to be handled by userspace, | |
| 212 | − otherwise the core will return a feature refused message as per the specification.</entry> | |
| 213 | − </row> | |
| 214 | − <row> | |
| 215 | − <entry><constant>CEC_MSG_GIVE_PHYSICAL_ADDR</constant></entry> | |
| 216 | − <entry>When in passthrough mode this message has to be handled by userspace, | |
| 217 | − otherwise the core will report the current physical address.</entry> | |
| 218 | − </row> | |
| 219 | − <row> | |
| 220 | − <entry><constant>CEC_MSG_GIVE_OSD_NAME</constant></entry> | |
| 221 | − <entry>When in passthrough mode this message has to be handled by userspace, | |
| 222 | − otherwise the core will report the current OSD name as was set with | |
| 223 | − &CEC-ADAP-S-LOG-ADDRS;.</entry> | |
| 224 | − </row> | |
| 225 | − <row> | |
| 226 | − <entry><constant>CEC_MSG_GIVE_FEATURES</constant></entry> | |
| 227 | − <entry>When in passthrough mode this message has to be handled by userspace, | |
| 228 | − otherwise the core will report the current features as was set with | |
| 229 | − &CEC-ADAP-S-LOG-ADDRS; or the message is ignore if the CEC version was | |
| 230 | − older than 2.0.</entry> | |
| 231 | − </row> | |
| 232 | − <row> | |
| 233 | − <entry><constant>CEC_MSG_USER_CONTROL_PRESSED</constant></entry> | |
| 234 | − <entry>If <constant>CEC_CAP_RC</constant> is set, then generate a remote control | |
| 235 | − key press. This message is always passed on to userspace.</entry> | |
| 236 | − </row> | |
| 237 | − <row> | |
| 238 | − <entry><constant>CEC_MSG_USER_CONTROL_RELEASED</constant></entry> | |
| 239 | − <entry>If <constant>CEC_CAP_RC</constant> is set, then generate a remote control | |
| 240 | − key release. This message is always passed on to userspace.</entry> | |
| 241 | − </row> | |
| 242 | − <row> | |
| 243 | − <entry><constant>CEC_MSG_REPORT_PHYSICAL_ADDR</constant></entry> | |
| 244 | − <entry>The CEC framework will make note of the reported physical address | |
| 245 | − and then just pass the message on to userspace.</entry> | |
| 246 | − </row> | |
| 247 | − </tbody> | |
| 248 | − </tgroup> | |
| 249 | − </table> | |
| 250 | − </refsect1> | |
| 251 | − | |
| 252 | − <refsect1> | |
| 253 | − &return-value; | |
| 254 | − </refsect1> | |
| 255 | −</refentry> | |
| @@ -1,274 +0,0 @@ | ||
| 1 | −<refentry id="cec-ioc-receive"> | |
| 2 | − <refmeta> | |
| 3 | − <refentrytitle>ioctl CEC_RECEIVE, CEC_TRANSMIT</refentrytitle> | |
| 4 | − &manvol; | |
| 5 | − </refmeta> | |
| 6 | − | |
| 7 | − <refnamediv> | |
| 8 | − <refname>CEC_RECEIVE</refname> | |
| 9 | − <refname>CEC_TRANSMIT</refname> | |
| 10 | − <refpurpose>Receive or transmit a CEC message</refpurpose> | |
| 11 | − </refnamediv> | |
| 12 | − | |
| 13 | − <refsynopsisdiv> | |
| 14 | − <funcsynopsis> | |
| 15 | − <funcprototype> | |
| 16 | − <funcdef>int <function>ioctl</function></funcdef> | |
| 17 | − <paramdef>int <parameter>fd</parameter></paramdef> | |
| 18 | − <paramdef>int <parameter>request</parameter></paramdef> | |
| 19 | − <paramdef>struct cec_msg *<parameter>argp</parameter></paramdef> | |
| 20 | − </funcprototype> | |
| 21 | − </funcsynopsis> | |
| 22 | − </refsynopsisdiv> | |
| 23 | − | |
| 24 | − <refsect1> | |
| 25 | − <title>Arguments</title> | |
| 26 | − | |
| 27 | − <variablelist> | |
| 28 | − <varlistentry> | |
| 29 | − <term><parameter>fd</parameter></term> | |
| 30 | − <listitem> | |
| 31 | − <para>File descriptor returned by | |
| 32 | − <link linkend='cec-func-open'><function>open()</function></link>.</para> | |
| 33 | − </listitem> | |
| 34 | − </varlistentry> | |
| 35 | − <varlistentry> | |
| 36 | − <term><parameter>request</parameter></term> | |
| 37 | − <listitem> | |
| 38 | − <para>CEC_RECEIVE, CEC_TRANSMIT</para> | |
| 39 | − </listitem> | |
| 40 | − </varlistentry> | |
| 41 | − <varlistentry> | |
| 42 | − <term><parameter>argp</parameter></term> | |
| 43 | − <listitem> | |
| 44 | − <para></para> | |
| 45 | − </listitem> | |
| 46 | − </varlistentry> | |
| 47 | − </variablelist> | |
| 48 | − </refsect1> | |
| 49 | − | |
| 50 | − <refsect1> | |
| 51 | − <title>Description</title> | |
| 52 | − | |
| 53 | − <para> | |
| 54 | − Note: this documents the proposed CEC API. This API is not yet finalized and | |
| 55 | − is currently only available as a staging kernel module. | |
| 56 | − </para> | |
| 57 | − | |
| 58 | − <para>To receive a CEC message the application has to fill in the | |
| 59 | − <structname>cec_msg</structname> structure and pass it to the | |
| 60 | − <constant>CEC_RECEIVE</constant> ioctl. <constant>CEC_RECEIVE</constant> is | |
| 61 | − only available if <constant>CEC_CAP_RECEIVE</constant> is set. If the | |
| 62 | − file descriptor is in non-blocking mode and there are no received | |
| 63 | − messages pending, then it will return -1 and set errno to the &EAGAIN;. | |
| 64 | − If the file descriptor is in blocking mode and <structfield>timeout</structfield> | |
| 65 | − is non-zero and no message arrived within <structfield>timeout</structfield> | |
| 66 | − milliseconds, then it will return -1 and set errno to the &ETIMEDOUT;.</para> | |
| 67 | − | |
| 68 | − <para>To send a CEC message the application has to fill in the | |
| 69 | − <structname>cec_msg</structname> structure and pass it to the | |
| 70 | − <constant>CEC_TRANSMIT</constant> ioctl. <constant>CEC_TRANSMIT</constant> is | |
| 71 | − only available if <constant>CEC_CAP_TRANSMIT</constant> is set. | |
| 72 | − If there is no more room in the transmit queue, then it will return | |
| 73 | − -1 and set errno to the &EBUSY;.</para> | |
| 74 | − | |
| 75 | − <table pgwide="1" frame="none" id="cec-msg"> | |
| 76 | − <title>struct <structname>cec_msg</structname></title> | |
| 77 | − <tgroup cols="3"> | |
| 78 | − &cs-str; | |
| 79 | − <tbody valign="top"> | |
| 80 | − <row> | |
| 81 | − <entry>__u64</entry> | |
| 82 | − <entry><structfield>ts</structfield></entry> | |
| 83 | − <entry>Timestamp of when the message was transmitted in ns in the case | |
| 84 | − of <constant>CEC_TRANSMIT</constant> with <structfield>reply</structfield> | |
| 85 | − set to 0, or the timestamp of the received message in all other cases.</entry> | |
| 86 | − </row> | |
| 87 | − <row> | |
| 88 | − <entry>__u32</entry> | |
| 89 | − <entry><structfield>len</structfield></entry> | |
| 90 | − <entry>The length of the message. For <constant>CEC_TRANSMIT</constant> this | |
| 91 | − is filled in by the application. The driver will fill this in for | |
| 92 | − <constant>CEC_RECEIVE</constant> and for <constant>CEC_TRANSMIT</constant> | |
| 93 | − it will be filled in with the length of the reply message if | |
| 94 | − <structfield>reply</structfield> was set.</entry> | |
| 95 | − </row> | |
| 96 | − <row> | |
| 97 | − <entry>__u32</entry> | |
| 98 | − <entry><structfield>timeout</structfield></entry> | |
| 99 | − <entry>The timeout in milliseconds. This is the time the device will wait for a message to | |
| 100 | − be received before timing out. If it is set to 0, then it will wait indefinitely when it | |
| 101 | − is called by <constant>CEC_RECEIVE</constant>. If it is 0 and it is called by | |
| 102 | − <constant>CEC_TRANSMIT</constant>, then it will be replaced by 1000 if the | |
| 103 | − <structfield>reply</structfield> is non-zero or ignored if <structfield>reply</structfield> | |
| 104 | − is 0.</entry> | |
| 105 | − </row> | |
| 106 | − <row> | |
| 107 | − <entry>__u32</entry> | |
| 108 | − <entry><structfield>sequence</structfield></entry> | |
| 109 | − <entry>The sequence number is automatically assigned by the CEC | |
| 110 | − framework for all transmitted messages. It can be later used by the | |
| 111 | − framework to generate an event if a reply for a message was | |
| 112 | − requested and the message was transmitted in a non-blocking mode. | |
| 113 | − </entry> | |
| 114 | − </row> | |
| 115 | − <row> | |
| 116 | − <entry>__u32</entry> | |
| 117 | − <entry><structfield>flags</structfield></entry> | |
| 118 | − <entry>Flags. No flags are defined yet, so set this to 0.</entry> | |
| 119 | − </row> | |
| 120 | − <row> | |
| 121 | − <entry>__u8</entry> | |
| 122 | − <entry><structfield>rx_status</structfield></entry> | |
| 123 | − <entry>The status bits of the received message. See <xref linkend="cec-rx-status" /> | |
| 124 | − for the possible status values. It is 0 if this message was transmitted, not | |
| 125 | − received, unless this is the reply to a transmitted message. In that case both | |
| 126 | − <structfield>rx_status</structfield> and <structfield>tx_status</structfield> | |
| 127 | − are set.</entry> | |
| 128 | − </row> | |
| 129 | − <row> | |
| 130 | − <entry>__u8</entry> | |
| 131 | − <entry><structfield>tx_status</structfield></entry> | |
| 132 | − <entry>The status bits of the transmitted message. See <xref linkend="cec-tx-status" /> | |
| 133 | − for the possible status values. It is 0 if this messages was received, not | |
| 134 | − transmitted.</entry> | |
| 135 | − </row> | |
| 136 | − <row> | |
| 137 | − <entry>__u8</entry> | |
| 138 | − <entry><structfield>msg</structfield>[16]</entry> | |
| 139 | − <entry>The message payload. For <constant>CEC_TRANSMIT</constant> this | |
| 140 | − is filled in by the application. The driver will fill this in for | |
| 141 | − <constant>CEC_RECEIVE</constant> and for <constant>CEC_TRANSMIT</constant> | |
| 142 | − it will be filled in with the payload of the reply message if | |
| 143 | − <structfield>reply</structfield> was set.</entry> | |
| 144 | − </row> | |
| 145 | − <row> | |
| 146 | − <entry>__u8</entry> | |
| 147 | − <entry><structfield>reply</structfield></entry> | |
| 148 | − <entry>Wait until this message is replied. If <structfield>reply</structfield> | |
| 149 | − is 0 and the <structfield>timeout</structfield> is 0, then don't wait for a reply but | |
| 150 | − return after transmitting the message. If there was an error as indicated by a non-zero | |
| 151 | − <structfield>tx_status</structfield> field, then <structfield>reply</structfield> and | |
| 152 | − <structfield>timeout</structfield> are both set to 0 by the driver. Ignored by | |
| 153 | − <constant>CEC_RECEIVE</constant>. The case where <structfield>reply</structfield> is 0 | |
| 154 | − (this is the opcode for the Feature Abort message) and <structfield>timeout</structfield> | |
| 155 | − is non-zero is specifically allowed to send a message and wait up to <structfield>timeout</structfield> | |
| 156 | − milliseconds for a Feature Abort reply. In this case <structfield>rx_status</structfield> | |
| 157 | − will either be set to <constant>CEC_RX_STATUS_TIMEOUT</constant> or | |
| 158 | − <constant>CEC_RX_STATUS_FEATURE_ABORT</constant>.</entry> | |
| 159 | − </row> | |
| 160 | − <row> | |
| 161 | − <entry>__u8</entry> | |
| 162 | − <entry><structfield>tx_arb_lost_cnt</structfield></entry> | |
| 163 | − <entry>A counter of the number of transmit attempts that resulted in the | |
| 164 | − Arbitration Lost error. This is only set if the hardware supports this, otherwise | |
| 165 | − it is always 0. This counter is only valid if the <constant>CEC_TX_STATUS_ARB_LOST</constant> | |
| 166 | − status bit is set.</entry> | |
| 167 | − </row> | |
| 168 | − <row> | |
| 169 | − <entry>__u8</entry> | |
| 170 | − <entry><structfield>tx_nack_cnt</structfield></entry> | |
| 171 | − <entry>A counter of the number of transmit attempts that resulted in the | |
| 172 | − Not Acknowledged error. This is only set if the hardware supports this, otherwise | |
| 173 | − it is always 0. This counter is only valid if the <constant>CEC_TX_STATUS_NACK</constant> | |
| 174 | − status bit is set.</entry> | |
| 175 | − </row> | |
| 176 | − <row> | |
| 177 | − <entry>__u8</entry> | |
| 178 | − <entry><structfield>tx_low_drive_cnt</structfield></entry> | |
| 179 | − <entry>A counter of the number of transmit attempts that resulted in the | |
| 180 | − Arbitration Lost error. This is only set if the hardware supports this, otherwise | |
| 181 | − it is always 0. This counter is only valid if the <constant>CEC_TX_STATUS_LOW_DRIVE</constant> | |
| 182 | − status bit is set.</entry> | |
| 183 | − </row> | |
| 184 | − <row> | |
| 185 | − <entry>__u8</entry> | |
| 186 | − <entry><structfield>tx_error_cnt</structfield></entry> | |
| 187 | − <entry>A counter of the number of transmit errors other than Arbitration Lost | |
| 188 | − or Not Acknowledged. This is only set if the hardware supports this, otherwise | |
| 189 | − it is always 0. This counter is only valid if the <constant>CEC_TX_STATUS_ERROR</constant> | |
| 190 | − status bit is set.</entry> | |
| 191 | − </row> | |
| 192 | − </tbody> | |
| 193 | − </tgroup> | |
| 194 | − </table> | |
| 195 | − | |
| 196 | − <table pgwide="1" frame="none" id="cec-tx-status"> | |
| 197 | − <title>CEC Transmit Status</title> | |
| 198 | − <tgroup cols="3"> | |
| 199 | − &cs-def; | |
| 200 | − <tbody valign="top"> | |
| 201 | − <row> | |
| 202 | − <entry><constant>CEC_TX_STATUS_OK</constant></entry> | |
| 203 | − <entry>0x01</entry> | |
| 204 | − <entry>The message was transmitted successfully. This is mutually exclusive with | |
| 205 | − <constant>CEC_TX_STATUS_MAX_RETRIES</constant>. Other bits can still be set if | |
| 206 | − earlier attempts met with failure before the transmit was eventually successful.</entry> | |
| 207 | − </row> | |
| 208 | − <row> | |
| 209 | − <entry><constant>CEC_TX_STATUS_ARB_LOST</constant></entry> | |
| 210 | − <entry>0x02</entry> | |
| 211 | − <entry>CEC line arbitration was lost.</entry> | |
| 212 | − </row> | |
| 213 | − <row> | |
| 214 | − <entry><constant>CEC_TX_STATUS_NACK</constant></entry> | |
| 215 | − <entry>0x04</entry> | |
| 216 | − <entry>Message was not acknowledged.</entry> | |
| 217 | − </row> | |
| 218 | − <row> | |
| 219 | − <entry><constant>CEC_TX_STATUS_LOW_DRIVE</constant></entry> | |
| 220 | − <entry>0x08</entry> | |
| 221 | − <entry>Low drive was detected on the CEC bus. This indicates that a follower | |
| 222 | − detected an error on the bus and requests a retransmission.</entry> | |
| 223 | − </row> | |
| 224 | − <row> | |
| 225 | − <entry><constant>CEC_TX_STATUS_ERROR</constant></entry> | |
| 226 | − <entry>0x10</entry> | |
| 227 | − <entry>Some error occurred. This is used for any errors that do not | |
| 228 | − fit the previous two, either because the hardware could not tell | |
| 229 | − which error occurred, or because the hardware tested for other conditions | |
| 230 | − besides those two.</entry> | |
| 231 | − </row> | |
| 232 | − <row> | |
| 233 | − <entry><constant>CEC_TX_STATUS_MAX_RETRIES</constant></entry> | |
| 234 | − <entry>0x20</entry> | |
| 235 | − <entry>The transmit failed after one or more retries. This status bit is mutually | |
| 236 | − exclusive with <constant>CEC_TX_STATUS_OK</constant>. Other bits can still be set | |
| 237 | − to explain which failures were seen.</entry> | |
| 238 | − </row> | |
| 239 | − </tbody> | |
| 240 | − </tgroup> | |
| 241 | − </table> | |
| 242 | − | |
| 243 | − <table pgwide="1" frame="none" id="cec-rx-status"> | |
| 244 | − <title>CEC Receive Status</title> | |
| 245 | − <tgroup cols="3"> | |
| 246 | − &cs-def; | |
| 247 | − <tbody valign="top"> | |
| 248 | − <row> | |
| 249 | − <entry><constant>CEC_RX_STATUS_OK</constant></entry> | |
| 250 | − <entry>0x01</entry> | |
| 251 | − <entry>The message was received successfully.</entry> | |
| 252 | − </row> | |
| 253 | − <row> | |
| 254 | − <entry><constant>CEC_RX_STATUS_TIMEOUT</constant></entry> | |
| 255 | − <entry>0x02</entry> | |
| 256 | − <entry>The reply to an earlier transmitted message timed out.</entry> | |
| 257 | − </row> | |
| 258 | − <row> | |
| 259 | − <entry><constant>CEC_RX_STATUS_FEATURE_ABORT</constant></entry> | |
| 260 | − <entry>0x04</entry> | |
| 261 | − <entry>The message was received successfully but the reply was | |
| 262 | − <constant>CEC_MSG_FEATURE_ABORT</constant>. This status is only | |
| 263 | − set if this message was the reply to an earlier transmitted | |
| 264 | − message.</entry> | |
| 265 | − </row> | |
| 266 | − </tbody> | |
| 267 | − </tgroup> | |
| 268 | − </table> | |
| 269 | − </refsect1> | |
| 270 | − | |
| 271 | − <refsect1> | |
| 272 | − &return-value; | |
| 273 | − </refsect1> | |
| 274 | −</refentry> | |
| @@ -1,1102 +0,0 @@ | ||
| 1 | − <title>Common API Elements</title> | |
| 2 | − | |
| 3 | − <para>Programming a V4L2 device consists of these | |
| 4 | −steps:</para> | |
| 5 | − | |
| 6 | − <itemizedlist> | |
| 7 | − <listitem> | |
| 8 | − <para>Opening the device</para> | |
| 9 | − </listitem> | |
| 10 | − <listitem> | |
| 11 | − <para>Changing device properties, selecting a video and audio | |
| 12 | −input, video standard, picture brightness a. o.</para> | |
| 13 | − </listitem> | |
| 14 | − <listitem> | |
| 15 | − <para>Negotiating a data format</para> | |
| 16 | − </listitem> | |
| 17 | − <listitem> | |
| 18 | − <para>Negotiating an input/output method</para> | |
| 19 | − </listitem> | |
| 20 | − <listitem> | |
| 21 | − <para>The actual input/output loop</para> | |
| 22 | − </listitem> | |
| 23 | − <listitem> | |
| 24 | − <para>Closing the device</para> | |
| 25 | − </listitem> | |
| 26 | − </itemizedlist> | |
| 27 | − | |
| 28 | − <para>In practice most steps are optional and can be executed out of | |
| 29 | −order. It depends on the V4L2 device type, you can read about the | |
| 30 | −details in <xref linkend="devices" />. In this chapter we will discuss | |
| 31 | −the basic concepts applicable to all devices.</para> | |
| 32 | − | |
| 33 | − <section id="open"> | |
| 34 | − <title>Opening and Closing Devices</title> | |
| 35 | − | |
| 36 | − <section> | |
| 37 | − <title>Device Naming</title> | |
| 38 | − | |
| 39 | − <para>V4L2 drivers are implemented as kernel modules, loaded | |
| 40 | −manually by the system administrator or automatically when a device is | |
| 41 | −first discovered. The driver modules plug into the "videodev" kernel | |
| 42 | −module. It provides helper functions and a common application | |
| 43 | −interface specified in this document.</para> | |
| 44 | − | |
| 45 | − <para>Each driver thus loaded registers one or more device nodes | |
| 46 | −with major number 81 and a minor number between 0 and 255. Minor numbers | |
| 47 | −are allocated dynamically unless the kernel is compiled with the kernel | |
| 48 | −option CONFIG_VIDEO_FIXED_MINOR_RANGES. In that case minor numbers are | |
| 49 | −allocated in ranges depending on the device node type (video, radio, etc.).</para> | |
| 50 | − | |
| 51 | − <para>Many drivers support "video_nr", "radio_nr" or "vbi_nr" | |
| 52 | −module options to select specific video/radio/vbi node numbers. This allows | |
| 53 | −the user to request that the device node is named e.g. /dev/video5 instead | |
| 54 | −of leaving it to chance. When the driver supports multiple devices of the same | |
| 55 | −type more than one device node number can be assigned, separated by commas: | |
| 56 | − <informalexample> | |
| 57 | − <screen> | |
| 58 | −> modprobe mydriver video_nr=0,1 radio_nr=0,1</screen> | |
| 59 | − </informalexample></para> | |
| 60 | − | |
| 61 | − <para>In <filename>/etc/modules.conf</filename> this may be | |
| 62 | −written as: <informalexample> | |
| 63 | − <screen> | |
| 64 | −options mydriver video_nr=0,1 radio_nr=0,1 | |
| 65 | − </screen> | |
| 66 | − </informalexample> When no device node number is given as module | |
| 67 | −option the driver supplies a default.</para> | |
| 68 | − | |
| 69 | − <para>Normally udev will create the device nodes in /dev automatically | |
| 70 | −for you. If udev is not installed, then you need to enable the | |
| 71 | −CONFIG_VIDEO_FIXED_MINOR_RANGES kernel option in order to be able to correctly | |
| 72 | −relate a minor number to a device node number. I.e., you need to be certain | |
| 73 | −that minor number 5 maps to device node name video5. With this kernel option | |
| 74 | −different device types have different minor number ranges. These ranges are | |
| 75 | −listed in <xref linkend="devices" />. | |
| 76 | −</para> | |
| 77 | − | |
| 78 | − <para>The creation of character special files (with | |
| 79 | −<application>mknod</application>) is a privileged operation and | |
| 80 | −devices cannot be opened by major and minor number. That means | |
| 81 | −applications cannot <emphasis>reliable</emphasis> scan for loaded or | |
| 82 | −installed drivers. The user must enter a device name, or the | |
| 83 | −application can try the conventional device names.</para> | |
| 84 | − </section> | |
| 85 | − | |
| 86 | − <section id="related"> | |
| 87 | − <title>Related Devices</title> | |
| 88 | − | |
| 89 | − <para>Devices can support several functions. For example | |
| 90 | −video capturing, VBI capturing and radio support.</para> | |
| 91 | − | |
| 92 | − <para>The V4L2 API creates different nodes for each of these functions.</para> | |
| 93 | − | |
| 94 | − <para>The V4L2 API was designed with the idea that one device node could support | |
| 95 | −all functions. However, in practice this never worked: this 'feature' | |
| 96 | −was never used by applications and many drivers did not support it and if | |
| 97 | −they did it was certainly never tested. In addition, switching a device | |
| 98 | −node between different functions only works when using the streaming I/O | |
| 99 | −API, not with the read()/write() API.</para> | |
| 100 | − | |
| 101 | − <para>Today each device node supports just one function.</para> | |
| 102 | − | |
| 103 | − <para>Besides video input or output the hardware may also | |
| 104 | −support audio sampling or playback. If so, these functions are | |
| 105 | −implemented as ALSA PCM devices with optional ALSA audio mixer | |
| 106 | −devices.</para> | |
| 107 | − | |
| 108 | − <para>One problem with all these devices is that the V4L2 API | |
| 109 | −makes no provisions to find these related devices. Some really | |
| 110 | −complex devices use the Media Controller (see <xref linkend="media_controller" />) | |
| 111 | −which can be used for this purpose. But most drivers do not use it, | |
| 112 | −and while some code exists that uses sysfs to discover related devices | |
| 113 | −(see libmedia_dev in the <ulink url="http://git.linuxtv.org/cgit.cgi/v4l-utils.git/">v4l-utils</ulink> | |
| 114 | −git repository), there is no library yet that can provide a single API towards | |
| 115 | −both Media Controller-based devices and devices that do not use the Media Controller. | |
| 116 | −If you want to work on this please write to the linux-media mailing list: &v4l-ml;.</para> | |
| 117 | − </section> | |
| 118 | − | |
| 119 | − <section> | |
| 120 | − <title>Multiple Opens</title> | |
| 121 | − | |
| 122 | − <para>V4L2 devices can be opened more than once.<footnote><para> | |
| 123 | −There are still some old and obscure drivers that have not been updated to | |
| 124 | −allow for multiple opens. This implies that for such drivers &func-open; can | |
| 125 | −return an &EBUSY; when the device is already in use.</para></footnote> | |
| 126 | −When this is supported by the driver, users can for example start a | |
| 127 | −"panel" application to change controls like brightness or audio | |
| 128 | −volume, while another application captures video and audio. In other words, panel | |
| 129 | −applications are comparable to an ALSA audio mixer application. | |
| 130 | −Just opening a V4L2 device should not change the state of the device.<footnote> | |
| 131 | −<para>Unfortunately, opening a radio device often switches the state of the | |
| 132 | −device to radio mode in many drivers. This behavior should be fixed eventually | |
| 133 | −as it violates the V4L2 specification.</para></footnote></para> | |
| 134 | − | |
| 135 | − <para>Once an application has allocated the memory buffers needed for | |
| 136 | −streaming data (by calling the &VIDIOC-REQBUFS; or &VIDIOC-CREATE-BUFS; ioctls, | |
| 137 | −or implicitly by calling the &func-read; or &func-write; functions) that | |
| 138 | −application (filehandle) becomes the owner of the device. It is no longer | |
| 139 | −allowed to make changes that would affect the buffer sizes (e.g. by calling | |
| 140 | −the &VIDIOC-S-FMT; ioctl) and other applications are no longer allowed to allocate | |
| 141 | −buffers or start or stop streaming. The &EBUSY; will be returned instead.</para> | |
| 142 | − | |
| 143 | − <para>Merely opening a V4L2 device does not grant exclusive | |
| 144 | −access.<footnote> | |
| 145 | − <para>Drivers could recognize the | |
| 146 | −<constant>O_EXCL</constant> open flag. Presently this is not required, | |
| 147 | −so applications cannot know if it really works.</para> | |
| 148 | − </footnote> Initiating data exchange however assigns the right | |
| 149 | −to read or write the requested type of data, and to change related | |
| 150 | −properties, to this file descriptor. Applications can request | |
| 151 | −additional access privileges using the priority mechanism described in | |
| 152 | −<xref linkend="app-pri" />.</para> | |
| 153 | − </section> | |
| 154 | − | |
| 155 | − <section> | |
| 156 | − <title>Shared Data Streams</title> | |
| 157 | − | |
| 158 | − <para>V4L2 drivers should not support multiple applications | |
| 159 | −reading or writing the same data stream on a device by copying | |
| 160 | −buffers, time multiplexing or similar means. This is better handled by | |
| 161 | −a proxy application in user space.</para> | |
| 162 | − </section> | |
| 163 | − | |
| 164 | − <section> | |
| 165 | − <title>Functions</title> | |
| 166 | − | |
| 167 | − <para>To open and close V4L2 devices applications use the | |
| 168 | −&func-open; and &func-close; function, respectively. Devices are | |
| 169 | −programmed using the &func-ioctl; function as explained in the | |
| 170 | −following sections.</para> | |
| 171 | − </section> | |
| 172 | − </section> | |
| 173 | − | |
| 174 | − <section id="querycap"> | |
| 175 | − <title>Querying Capabilities</title> | |
| 176 | − | |
| 177 | − <para>Because V4L2 covers a wide variety of devices not all | |
| 178 | −aspects of the API are equally applicable to all types of devices. | |
| 179 | −Furthermore devices of the same type have different capabilities and | |
| 180 | −this specification permits the omission of a few complicated and less | |
| 181 | −important parts of the API.</para> | |
| 182 | − | |
| 183 | − <para>The &VIDIOC-QUERYCAP; ioctl is available to check if the kernel | |
| 184 | −device is compatible with this specification, and to query the <link | |
| 185 | −linkend="devices">functions</link> and <link linkend="io">I/O | |
| 186 | −methods</link> supported by the device.</para> | |
| 187 | − | |
| 188 | − <para>Starting with kernel version 3.1, VIDIOC-QUERYCAP will return the | |
| 189 | −V4L2 API version used by the driver, with generally matches the Kernel version. | |
| 190 | −There's no need of using &VIDIOC-QUERYCAP; to check if a specific ioctl is | |
| 191 | −supported, the V4L2 core now returns ENOTTY if a driver doesn't provide | |
| 192 | −support for an ioctl.</para> | |
| 193 | − | |
| 194 | − <para>Other features can be queried | |
| 195 | −by calling the respective ioctl, for example &VIDIOC-ENUMINPUT; | |
| 196 | −to learn about the number, types and names of video connectors on the | |
| 197 | −device. Although abstraction is a major objective of this API, the | |
| 198 | −&VIDIOC-QUERYCAP; ioctl also allows driver specific applications to reliably identify | |
| 199 | −the driver.</para> | |
| 200 | − | |
| 201 | − <para>All V4L2 drivers must support | |
| 202 | −<constant>VIDIOC_QUERYCAP</constant>. Applications should always call | |
| 203 | −this ioctl after opening the device.</para> | |
| 204 | − </section> | |
| 205 | − | |
| 206 | − <section id="app-pri"> | |
| 207 | − <title>Application Priority</title> | |
| 208 | − | |
| 209 | − <para>When multiple applications share a device it may be | |
| 210 | −desirable to assign them different priorities. Contrary to the | |
| 211 | −traditional "rm -rf /" school of thought a video recording application | |
| 212 | −could for example block other applications from changing video | |
| 213 | −controls or switching the current TV channel. Another objective is to | |
| 214 | −permit low priority applications working in background, which can be | |
| 215 | −preempted by user controlled applications and automatically regain | |
| 216 | −control of the device at a later time.</para> | |
| 217 | − | |
| 218 | − <para>Since these features cannot be implemented entirely in user | |
| 219 | −space V4L2 defines the &VIDIOC-G-PRIORITY; and &VIDIOC-S-PRIORITY; | |
| 220 | −ioctls to request and query the access priority associate with a file | |
| 221 | −descriptor. Opening a device assigns a medium priority, compatible | |
| 222 | −with earlier versions of V4L2 and drivers not supporting these ioctls. | |
| 223 | −Applications requiring a different priority will usually call | |
| 224 | −<constant>VIDIOC_S_PRIORITY</constant> after verifying the device with | |
| 225 | −the &VIDIOC-QUERYCAP; ioctl.</para> | |
| 226 | − | |
| 227 | − <para>Ioctls changing driver properties, such as &VIDIOC-S-INPUT;, | |
| 228 | −return an &EBUSY; after another application obtained higher priority.</para> | |
| 229 | − </section> | |
| 230 | − | |
| 231 | − <section id="video"> | |
| 232 | − <title>Video Inputs and Outputs</title> | |
| 233 | − | |
| 234 | − <para>Video inputs and outputs are physical connectors of a | |
| 235 | −device. These can be for example RF connectors (antenna/cable), CVBS | |
| 236 | −a.k.a. Composite Video, S-Video or RGB connectors. Video and VBI | |
| 237 | −capture devices have inputs. Video and VBI output devices have outputs, | |
| 238 | −at least one each. Radio devices have no video inputs or outputs.</para> | |
| 239 | − | |
| 240 | − <para>To learn about the number and attributes of the | |
| 241 | −available inputs and outputs applications can enumerate them with the | |
| 242 | −&VIDIOC-ENUMINPUT; and &VIDIOC-ENUMOUTPUT; ioctl, respectively. The | |
| 243 | −&v4l2-input; returned by the <constant>VIDIOC_ENUMINPUT</constant> | |
| 244 | −ioctl also contains signal status information applicable when the | |
| 245 | −current video input is queried.</para> | |
| 246 | − | |
| 247 | − <para>The &VIDIOC-G-INPUT; and &VIDIOC-G-OUTPUT; ioctls return the | |
| 248 | −index of the current video input or output. To select a different | |
| 249 | −input or output applications call the &VIDIOC-S-INPUT; and | |
| 250 | −&VIDIOC-S-OUTPUT; ioctls. Drivers must implement all the input ioctls | |
| 251 | −when the device has one or more inputs, all the output ioctls when the | |
| 252 | −device has one or more outputs.</para> | |
| 253 | − | |
| 254 | − <example> | |
| 255 | − <title>Information about the current video input</title> | |
| 256 | − | |
| 257 | − <programlisting> | |
| 258 | −&v4l2-input; input; | |
| 259 | −int index; | |
| 260 | − | |
| 261 | −if (-1 == ioctl(fd, &VIDIOC-G-INPUT;, &index)) { | |
| 262 | − perror("VIDIOC_G_INPUT"); | |
| 263 | − exit(EXIT_FAILURE); | |
| 264 | −} | |
| 265 | − | |
| 266 | −memset(&input, 0, sizeof(input)); | |
| 267 | −input.index = index; | |
| 268 | − | |
| 269 | −if (-1 == ioctl(fd, &VIDIOC-ENUMINPUT;, &input)) { | |
| 270 | − perror("VIDIOC_ENUMINPUT"); | |
| 271 | − exit(EXIT_FAILURE); | |
| 272 | −} | |
| 273 | − | |
| 274 | −printf("Current input: %s\n", input.name); | |
| 275 | − </programlisting> | |
| 276 | − </example> | |
| 277 | − | |
| 278 | − <example> | |
| 279 | − <title>Switching to the first video input</title> | |
| 280 | − | |
| 281 | − <programlisting> | |
| 282 | −int index; | |
| 283 | − | |
| 284 | −index = 0; | |
| 285 | − | |
| 286 | −if (-1 == ioctl(fd, &VIDIOC-S-INPUT;, &index)) { | |
| 287 | − perror("VIDIOC_S_INPUT"); | |
| 288 | − exit(EXIT_FAILURE); | |
| 289 | −} | |
| 290 | − </programlisting> | |
| 291 | − </example> | |
| 292 | − </section> | |
| 293 | − | |
| 294 | − <section id="audio"> | |
| 295 | − <title>Audio Inputs and Outputs</title> | |
| 296 | − | |
| 297 | − <para>Audio inputs and outputs are physical connectors of a | |
| 298 | −device. Video capture devices have inputs, output devices have | |
| 299 | −outputs, zero or more each. Radio devices have no audio inputs or | |
| 300 | −outputs. They have exactly one tuner which in fact | |
| 301 | −<emphasis>is</emphasis> an audio source, but this API associates | |
| 302 | −tuners with video inputs or outputs only, and radio devices have | |
| 303 | −none of these.<footnote> | |
| 304 | − <para>Actually &v4l2-audio; ought to have a | |
| 305 | −<structfield>tuner</structfield> field like &v4l2-input;, not only | |
| 306 | −making the API more consistent but also permitting radio devices with | |
| 307 | −multiple tuners.</para> | |
| 308 | − </footnote> A connector on a TV card to loop back the received | |
| 309 | −audio signal to a sound card is not considered an audio output.</para> | |
| 310 | − | |
| 311 | − <para>Audio and video inputs and outputs are associated. Selecting | |
| 312 | −a video source also selects an audio source. This is most evident when | |
| 313 | −the video and audio source is a tuner. Further audio connectors can | |
| 314 | −combine with more than one video input or output. Assumed two | |
| 315 | −composite video inputs and two audio inputs exist, there may be up to | |
| 316 | −four valid combinations. The relation of video and audio connectors | |
| 317 | −is defined in the <structfield>audioset</structfield> field of the | |
| 318 | −respective &v4l2-input; or &v4l2-output;, where each bit represents | |
| 319 | −the index number, starting at zero, of one audio input or output.</para> | |
| 320 | − | |
| 321 | − <para>To learn about the number and attributes of the | |
| 322 | −available inputs and outputs applications can enumerate them with the | |
| 323 | −&VIDIOC-ENUMAUDIO; and &VIDIOC-ENUMAUDOUT; ioctl, respectively. The | |
| 324 | −&v4l2-audio; returned by the <constant>VIDIOC_ENUMAUDIO</constant> ioctl | |
| 325 | −also contains signal status information applicable when the current | |
| 326 | −audio input is queried.</para> | |
| 327 | − | |
| 328 | − <para>The &VIDIOC-G-AUDIO; and &VIDIOC-G-AUDOUT; ioctls report | |
| 329 | −the current audio input and output, respectively. Note that, unlike | |
| 330 | −&VIDIOC-G-INPUT; and &VIDIOC-G-OUTPUT; these ioctls return a structure | |
| 331 | −as <constant>VIDIOC_ENUMAUDIO</constant> and | |
| 332 | −<constant>VIDIOC_ENUMAUDOUT</constant> do, not just an index.</para> | |
| 333 | − | |
| 334 | − <para>To select an audio input and change its properties | |
| 335 | −applications call the &VIDIOC-S-AUDIO; ioctl. To select an audio | |
| 336 | −output (which presently has no changeable properties) applications | |
| 337 | −call the &VIDIOC-S-AUDOUT; ioctl.</para> | |
| 338 | − | |
| 339 | − <para>Drivers must implement all audio input ioctls when the device | |
| 340 | −has multiple selectable audio inputs, all audio output ioctls when the | |
| 341 | −device has multiple selectable audio outputs. When the device has any | |
| 342 | −audio inputs or outputs the driver must set the <constant>V4L2_CAP_AUDIO</constant> | |
| 343 | −flag in the &v4l2-capability; returned by the &VIDIOC-QUERYCAP; ioctl.</para> | |
| 344 | − | |
| 345 | − <example> | |
| 346 | − <title>Information about the current audio input</title> | |
| 347 | − | |
| 348 | − <programlisting> | |
| 349 | −&v4l2-audio; audio; | |
| 350 | − | |
| 351 | −memset(&audio, 0, sizeof(audio)); | |
| 352 | − | |
| 353 | −if (-1 == ioctl(fd, &VIDIOC-G-AUDIO;, &audio)) { | |
| 354 | − perror("VIDIOC_G_AUDIO"); | |
| 355 | − exit(EXIT_FAILURE); | |
| 356 | −} | |
| 357 | − | |
| 358 | −printf("Current input: %s\n", audio.name); | |
| 359 | − </programlisting> | |
| 360 | − </example> | |
| 361 | − | |
| 362 | − <example> | |
| 363 | − <title>Switching to the first audio input</title> | |
| 364 | − | |
| 365 | − <programlisting> | |
| 366 | −&v4l2-audio; audio; | |
| 367 | − | |
| 368 | −memset(&audio, 0, sizeof(audio)); /* clear audio.mode, audio.reserved */ | |
| 369 | − | |
| 370 | −audio.index = 0; | |
| 371 | − | |
| 372 | −if (-1 == ioctl(fd, &VIDIOC-S-AUDIO;, &audio)) { | |
| 373 | − perror("VIDIOC_S_AUDIO"); | |
| 374 | − exit(EXIT_FAILURE); | |
| 375 | −} | |
| 376 | − </programlisting> | |
| 377 | − </example> | |
| 378 | − </section> | |
| 379 | − | |
| 380 | − <section id="tuner"> | |
| 381 | − <title>Tuners and Modulators</title> | |
| 382 | − | |
| 383 | − <section> | |
| 384 | − <title>Tuners</title> | |
| 385 | − | |
| 386 | − <para>Video input devices can have one or more tuners | |
| 387 | −demodulating a RF signal. Each tuner is associated with one or more | |
| 388 | −video inputs, depending on the number of RF connectors on the tuner. | |
| 389 | −The <structfield>type</structfield> field of the respective | |
| 390 | −&v4l2-input; returned by the &VIDIOC-ENUMINPUT; ioctl is set to | |
| 391 | −<constant>V4L2_INPUT_TYPE_TUNER</constant> and its | |
| 392 | −<structfield>tuner</structfield> field contains the index number of | |
| 393 | −the tuner.</para> | |
| 394 | − | |
| 395 | − <para>Radio input devices have exactly one tuner with index zero, no | |
| 396 | −video inputs.</para> | |
| 397 | − | |
| 398 | − <para>To query and change tuner properties applications use the | |
| 399 | −&VIDIOC-G-TUNER; and &VIDIOC-S-TUNER; ioctls, respectively. The | |
| 400 | −&v4l2-tuner; returned by <constant>VIDIOC_G_TUNER</constant> also | |
| 401 | −contains signal status information applicable when the tuner of the | |
| 402 | −current video or radio input is queried. Note that | |
| 403 | −<constant>VIDIOC_S_TUNER</constant> does not switch the current tuner, | |
| 404 | −when there is more than one at all. The tuner is solely determined by | |
| 405 | −the current video input. Drivers must support both ioctls and set the | |
| 406 | −<constant>V4L2_CAP_TUNER</constant> flag in the &v4l2-capability; | |
| 407 | −returned by the &VIDIOC-QUERYCAP; ioctl when the device has one or | |
| 408 | −more tuners.</para> | |
| 409 | − </section> | |
| 410 | − | |
| 411 | − <section> | |
| 412 | − <title>Modulators</title> | |
| 413 | − | |
| 414 | − <para>Video output devices can have one or more modulators, uh, | |
| 415 | −modulating a video signal for radiation or connection to the antenna | |
| 416 | −input of a TV set or video recorder. Each modulator is associated with | |
| 417 | −one or more video outputs, depending on the number of RF connectors on | |
| 418 | −the modulator. The <structfield>type</structfield> field of the | |
| 419 | −respective &v4l2-output; returned by the &VIDIOC-ENUMOUTPUT; ioctl is | |
| 420 | −set to <constant>V4L2_OUTPUT_TYPE_MODULATOR</constant> and its | |
| 421 | −<structfield>modulator</structfield> field contains the index number | |
| 422 | −of the modulator.</para> | |
| 423 | − | |
| 424 | − <para>Radio output devices have exactly one modulator with index | |
| 425 | −zero, no video outputs.</para> | |
| 426 | − | |
| 427 | − <para>A video or radio device cannot support both a tuner and a | |
| 428 | −modulator. Two separate device nodes will have to be used for such | |
| 429 | −hardware, one that supports the tuner functionality and one that supports | |
| 430 | −the modulator functionality. The reason is a limitation with the | |
| 431 | −&VIDIOC-S-FREQUENCY; ioctl where you cannot specify whether the frequency | |
| 432 | −is for a tuner or a modulator.</para> | |
| 433 | − | |
| 434 | − <para>To query and change modulator properties applications use | |
| 435 | −the &VIDIOC-G-MODULATOR; and &VIDIOC-S-MODULATOR; ioctl. Note that | |
| 436 | −<constant>VIDIOC_S_MODULATOR</constant> does not switch the current | |
| 437 | −modulator, when there is more than one at all. The modulator is solely | |
| 438 | −determined by the current video output. Drivers must support both | |
| 439 | −ioctls and set the <constant>V4L2_CAP_MODULATOR</constant> flag in | |
| 440 | −the &v4l2-capability; returned by the &VIDIOC-QUERYCAP; ioctl when the | |
| 441 | −device has one or more modulators.</para> | |
| 442 | − </section> | |
| 443 | − | |
| 444 | − <section> | |
| 445 | − <title>Radio Frequency</title> | |
| 446 | − | |
| 447 | − <para>To get and set the tuner or modulator radio frequency | |
| 448 | −applications use the &VIDIOC-G-FREQUENCY; and &VIDIOC-S-FREQUENCY; | |
| 449 | −ioctl which both take a pointer to a &v4l2-frequency;. These ioctls | |
| 450 | −are used for TV and radio devices alike. Drivers must support both | |
| 451 | −ioctls when the tuner or modulator ioctls are supported, or | |
| 452 | −when the device is a radio device.</para> | |
| 453 | − </section> | |
| 454 | − </section> | |
| 455 | − | |
| 456 | − <section id="standard"> | |
| 457 | − <title>Video Standards</title> | |
| 458 | − | |
| 459 | − <para>Video devices typically support one or more different video | |
| 460 | −standards or variations of standards. Each video input and output may | |
| 461 | −support another set of standards. This set is reported by the | |
| 462 | −<structfield>std</structfield> field of &v4l2-input; and | |
| 463 | −&v4l2-output; returned by the &VIDIOC-ENUMINPUT; and | |
| 464 | −&VIDIOC-ENUMOUTPUT; ioctls, respectively.</para> | |
| 465 | − | |
| 466 | − <para>V4L2 defines one bit for each analog video standard | |
| 467 | −currently in use worldwide, and sets aside bits for driver defined | |
| 468 | −standards, ⪚ hybrid standards to watch NTSC video tapes on PAL TVs | |
| 469 | −and vice versa. Applications can use the predefined bits to select a | |
| 470 | −particular standard, although presenting the user a menu of supported | |
| 471 | −standards is preferred. To enumerate and query the attributes of the | |
| 472 | −supported standards applications use the &VIDIOC-ENUMSTD; ioctl.</para> | |
| 473 | − | |
| 474 | − <para>Many of the defined standards are actually just variations | |
| 475 | −of a few major standards. The hardware may in fact not distinguish | |
| 476 | −between them, or do so internal and switch automatically. Therefore | |
| 477 | −enumerated standards also contain sets of one or more standard | |
| 478 | −bits.</para> | |
| 479 | − | |
| 480 | − <para>Assume a hypothetic tuner capable of demodulating B/PAL, | |
| 481 | −G/PAL and I/PAL signals. The first enumerated standard is a set of B | |
| 482 | −and G/PAL, switched automatically depending on the selected radio | |
| 483 | −frequency in UHF or VHF band. Enumeration gives a "PAL-B/G" or "PAL-I" | |
| 484 | −choice. Similar a Composite input may collapse standards, enumerating | |
| 485 | −"PAL-B/G/H/I", "NTSC-M" and "SECAM-D/K".<footnote> | |
| 486 | − <para>Some users are already confused by technical terms PAL, | |
| 487 | −NTSC and SECAM. There is no point asking them to distinguish between | |
| 488 | −B, G, D, or K when the software or hardware can do that | |
| 489 | −automatically.</para> | |
| 490 | − </footnote></para> | |
| 491 | − | |
| 492 | − <para>To query and select the standard used by the current video | |
| 493 | −input or output applications call the &VIDIOC-G-STD; and | |
| 494 | −&VIDIOC-S-STD; ioctl, respectively. The <emphasis>received</emphasis> | |
| 495 | −standard can be sensed with the &VIDIOC-QUERYSTD; ioctl. Note that the | |
| 496 | −parameter of all these ioctls is a pointer to a &v4l2-std-id; type | |
| 497 | −(a standard set), <emphasis>not</emphasis> an index into the standard | |
| 498 | −enumeration. Drivers must implement all video standard ioctls | |
| 499 | −when the device has one or more video inputs or outputs.</para> | |
| 500 | − | |
| 501 | − <para>Special rules apply to devices such as USB cameras where the notion of video | |
| 502 | −standards makes little sense. More generally for any capture or output device | |
| 503 | −which is: <itemizedlist> | |
| 504 | − <listitem> | |
| 505 | − <para>incapable of capturing fields or frames at the nominal | |
| 506 | −rate of the video standard, or</para> | |
| 507 | − </listitem> | |
| 508 | − <listitem> | |
| 509 | − <para>that does not support the video standard formats at all.</para> | |
| 510 | − </listitem> | |
| 511 | − </itemizedlist> Here the driver shall set the | |
| 512 | −<structfield>std</structfield> field of &v4l2-input; and &v4l2-output; | |
| 513 | −to zero and the <constant>VIDIOC_G_STD</constant>, | |
| 514 | −<constant>VIDIOC_S_STD</constant>, | |
| 515 | −<constant>VIDIOC_QUERYSTD</constant> and | |
| 516 | −<constant>VIDIOC_ENUMSTD</constant> ioctls shall return the | |
| 517 | −&ENOTTY; or the &EINVAL;.</para> | |
| 518 | − <para>Applications can make use of the <xref linkend="input-capabilities" /> and | |
| 519 | −<xref linkend="output-capabilities"/> flags to determine whether the video standard ioctls | |
| 520 | −can be used with the given input or output.</para> | |
| 521 | − | |
| 522 | − <example> | |
| 523 | − <title>Information about the current video standard</title> | |
| 524 | − | |
| 525 | − <programlisting> | |
| 526 | −&v4l2-std-id; std_id; | |
| 527 | −&v4l2-standard; standard; | |
| 528 | − | |
| 529 | −if (-1 == ioctl(fd, &VIDIOC-G-STD;, &std_id)) { | |
| 530 | − /* Note when VIDIOC_ENUMSTD always returns ENOTTY this | |
| 531 | − is no video device or it falls under the USB exception, | |
| 532 | − and VIDIOC_G_STD returning ENOTTY is no error. */ | |
| 533 | − | |
| 534 | − perror("VIDIOC_G_STD"); | |
| 535 | − exit(EXIT_FAILURE); | |
| 536 | −} | |
| 537 | − | |
| 538 | −memset(&standard, 0, sizeof(standard)); | |
| 539 | −standard.index = 0; | |
| 540 | − | |
| 541 | −while (0 == ioctl(fd, &VIDIOC-ENUMSTD;, &standard)) { | |
| 542 | − if (standard.id & std_id) { | |
| 543 | − printf("Current video standard: %s\n", standard.name); | |
| 544 | − exit(EXIT_SUCCESS); | |
| 545 | − } | |
| 546 | − | |
| 547 | − standard.index++; | |
| 548 | −} | |
| 549 | − | |
| 550 | −/* EINVAL indicates the end of the enumeration, which cannot be | |
| 551 | − empty unless this device falls under the USB exception. */ | |
| 552 | − | |
| 553 | −if (errno == EINVAL || standard.index == 0) { | |
| 554 | − perror("VIDIOC_ENUMSTD"); | |
| 555 | − exit(EXIT_FAILURE); | |
| 556 | −} | |
| 557 | − </programlisting> | |
| 558 | − </example> | |
| 559 | − | |
| 560 | − <example> | |
| 561 | − <title>Listing the video standards supported by the current | |
| 562 | −input</title> | |
| 563 | − | |
| 564 | − <programlisting> | |
| 565 | −&v4l2-input; input; | |
| 566 | −&v4l2-standard; standard; | |
| 567 | − | |
| 568 | −memset(&input, 0, sizeof(input)); | |
| 569 | − | |
| 570 | −if (-1 == ioctl(fd, &VIDIOC-G-INPUT;, &input.index)) { | |
| 571 | − perror("VIDIOC_G_INPUT"); | |
| 572 | − exit(EXIT_FAILURE); | |
| 573 | −} | |
| 574 | − | |
| 575 | −if (-1 == ioctl(fd, &VIDIOC-ENUMINPUT;, &input)) { | |
| 576 | − perror("VIDIOC_ENUM_INPUT"); | |
| 577 | − exit(EXIT_FAILURE); | |
| 578 | −} | |
| 579 | − | |
| 580 | −printf("Current input %s supports:\n", input.name); | |
| 581 | − | |
| 582 | −memset(&standard, 0, sizeof(standard)); | |
| 583 | −standard.index = 0; | |
| 584 | − | |
| 585 | −while (0 == ioctl(fd, &VIDIOC-ENUMSTD;, &standard)) { | |
| 586 | − if (standard.id & input.std) | |
| 587 | − printf("%s\n", standard.name); | |
| 588 | − | |
| 589 | − standard.index++; | |
| 590 | −} | |
| 591 | − | |
| 592 | −/* EINVAL indicates the end of the enumeration, which cannot be | |
| 593 | − empty unless this device falls under the USB exception. */ | |
| 594 | − | |
| 595 | −if (errno != EINVAL || standard.index == 0) { | |
| 596 | − perror("VIDIOC_ENUMSTD"); | |
| 597 | − exit(EXIT_FAILURE); | |
| 598 | −} | |
| 599 | − </programlisting> | |
| 600 | − </example> | |
| 601 | − | |
| 602 | − <example> | |
| 603 | − <title>Selecting a new video standard</title> | |
| 604 | − | |
| 605 | − <programlisting> | |
| 606 | −&v4l2-input; input; | |
| 607 | −&v4l2-std-id; std_id; | |
| 608 | − | |
| 609 | −memset(&input, 0, sizeof(input)); | |
| 610 | − | |
| 611 | −if (-1 == ioctl(fd, &VIDIOC-G-INPUT;, &input.index)) { | |
| 612 | − perror("VIDIOC_G_INPUT"); | |
| 613 | − exit(EXIT_FAILURE); | |
| 614 | −} | |
| 615 | − | |
| 616 | −if (-1 == ioctl(fd, &VIDIOC-ENUMINPUT;, &input)) { | |
| 617 | − perror("VIDIOC_ENUM_INPUT"); | |
| 618 | − exit(EXIT_FAILURE); | |
| 619 | −} | |
| 620 | − | |
| 621 | −if (0 == (input.std & V4L2_STD_PAL_BG)) { | |
| 622 | − fprintf(stderr, "Oops. B/G PAL is not supported.\n"); | |
| 623 | − exit(EXIT_FAILURE); | |
| 624 | −} | |
| 625 | − | |
| 626 | −/* Note this is also supposed to work when only B | |
| 627 | − <emphasis>or</emphasis> G/PAL is supported. */ | |
| 628 | − | |
| 629 | −std_id = V4L2_STD_PAL_BG; | |
| 630 | − | |
| 631 | −if (-1 == ioctl(fd, &VIDIOC-S-STD;, &std_id)) { | |
| 632 | − perror("VIDIOC_S_STD"); | |
| 633 | − exit(EXIT_FAILURE); | |
| 634 | −} | |
| 635 | − </programlisting> | |
| 636 | − </example> | |
| 637 | − </section> | |
| 638 | − <section id="dv-timings"> | |
| 639 | − <title>Digital Video (DV) Timings</title> | |
| 640 | − <para> | |
| 641 | − The video standards discussed so far have been dealing with Analog TV and the | |
| 642 | −corresponding video timings. Today there are many more different hardware interfaces | |
| 643 | −such as High Definition TV interfaces (HDMI), VGA, DVI connectors etc., that carry | |
| 644 | −video signals and there is a need to extend the API to select the video timings | |
| 645 | −for these interfaces. Since it is not possible to extend the &v4l2-std-id; due to | |
| 646 | −the limited bits available, a new set of ioctls was added to set/get video timings at | |
| 647 | −the input and output.</para> | |
| 648 | − | |
| 649 | − <para>These ioctls deal with the detailed digital video timings that define | |
| 650 | −each video format. This includes parameters such as the active video width and height, | |
| 651 | −signal polarities, frontporches, backporches, sync widths etc. The <filename>linux/v4l2-dv-timings.h</filename> | |
| 652 | −header can be used to get the timings of the formats in the <xref linkend="cea861" /> and | |
| 653 | −<xref linkend="vesadmt" /> standards. | |
| 654 | − </para> | |
| 655 | − | |
| 656 | − <para>To enumerate and query the attributes of the DV timings supported by a device | |
| 657 | − applications use the &VIDIOC-ENUM-DV-TIMINGS; and &VIDIOC-DV-TIMINGS-CAP; ioctls. | |
| 658 | − To set DV timings for the device applications use the | |
| 659 | −&VIDIOC-S-DV-TIMINGS; ioctl and to get current DV timings they use the | |
| 660 | −&VIDIOC-G-DV-TIMINGS; ioctl. To detect the DV timings as seen by the video receiver applications | |
| 661 | −use the &VIDIOC-QUERY-DV-TIMINGS; ioctl.</para> | |
| 662 | − <para>Applications can make use of the <xref linkend="input-capabilities" /> and | |
| 663 | −<xref linkend="output-capabilities"/> flags to determine whether the digital video ioctls | |
| 664 | −can be used with the given input or output.</para> | |
| 665 | − </section> | |
| 666 | − | |
| 667 | − &sub-controls; | |
| 668 | − | |
| 669 | − <section id="format"> | |
| 670 | − <title>Data Formats</title> | |
| 671 | − | |
| 672 | − <section> | |
| 673 | − <title>Data Format Negotiation</title> | |
| 674 | − | |
| 675 | − <para>Different devices exchange different kinds of data with | |
| 676 | −applications, for example video images, raw or sliced VBI data, RDS | |
| 677 | −datagrams. Even within one kind many different formats are possible, | |
| 678 | −in particular an abundance of image formats. Although drivers must | |
| 679 | −provide a default and the selection persists across closing and | |
| 680 | −reopening a device, applications should always negotiate a data format | |
| 681 | −before engaging in data exchange. Negotiation means the application | |
| 682 | −asks for a particular format and the driver selects and reports the | |
| 683 | −best the hardware can do to satisfy the request. Of course | |
| 684 | −applications can also just query the current selection.</para> | |
| 685 | − | |
| 686 | − <para>A single mechanism exists to negotiate all data formats | |
| 687 | −using the aggregate &v4l2-format; and the &VIDIOC-G-FMT; and | |
| 688 | −&VIDIOC-S-FMT; ioctls. Additionally the &VIDIOC-TRY-FMT; ioctl can be | |
| 689 | −used to examine what the hardware <emphasis>could</emphasis> do, | |
| 690 | −without actually selecting a new data format. The data formats | |
| 691 | −supported by the V4L2 API are covered in the respective device section | |
| 692 | −in <xref linkend="devices" />. For a closer look at image formats see | |
| 693 | −<xref linkend="pixfmt" />.</para> | |
| 694 | − | |
| 695 | − <para>The <constant>VIDIOC_S_FMT</constant> ioctl is a major | |
| 696 | −turning-point in the initialization sequence. Prior to this point | |
| 697 | −multiple panel applications can access the same device concurrently to | |
| 698 | −select the current input, change controls or modify other properties. | |
| 699 | −The first <constant>VIDIOC_S_FMT</constant> assigns a logical stream | |
| 700 | −(video data, VBI data etc.) exclusively to one file descriptor.</para> | |
| 701 | − | |
| 702 | − <para>Exclusive means no other application, more precisely no | |
| 703 | −other file descriptor, can grab this stream or change device | |
| 704 | −properties inconsistent with the negotiated parameters. A video | |
| 705 | −standard change for example, when the new standard uses a different | |
| 706 | −number of scan lines, can invalidate the selected image format. | |
| 707 | −Therefore only the file descriptor owning the stream can make | |
| 708 | −invalidating changes. Accordingly multiple file descriptors which | |
| 709 | −grabbed different logical streams prevent each other from interfering | |
| 710 | −with their settings. When for example video overlay is about to start | |
| 711 | −or already in progress, simultaneous video capturing may be restricted | |
| 712 | −to the same cropping and image size.</para> | |
| 713 | − | |
| 714 | − <para>When applications omit the | |
| 715 | −<constant>VIDIOC_S_FMT</constant> ioctl its locking side effects are | |
| 716 | −implied by the next step, the selection of an I/O method with the | |
| 717 | −&VIDIOC-REQBUFS; ioctl or implicit with the first &func-read; or | |
| 718 | −&func-write; call.</para> | |
| 719 | − | |
| 720 | − <para>Generally only one logical stream can be assigned to a | |
| 721 | −file descriptor, the exception being drivers permitting simultaneous | |
| 722 | −video capturing and overlay using the same file descriptor for | |
| 723 | −compatibility with V4L and earlier versions of V4L2. Switching the | |
| 724 | −logical stream or returning into "panel mode" is possible by closing | |
| 725 | −and reopening the device. Drivers <emphasis>may</emphasis> support a | |
| 726 | −switch using <constant>VIDIOC_S_FMT</constant>.</para> | |
| 727 | − | |
| 728 | − <para>All drivers exchanging data with | |
| 729 | −applications must support the <constant>VIDIOC_G_FMT</constant> and | |
| 730 | −<constant>VIDIOC_S_FMT</constant> ioctl. Implementation of the | |
| 731 | −<constant>VIDIOC_TRY_FMT</constant> is highly recommended but | |
| 732 | −optional.</para> | |
| 733 | − </section> | |
| 734 | − | |
| 735 | − <section> | |
| 736 | − <title>Image Format Enumeration</title> | |
| 737 | − | |
| 738 | − <para>Apart of the generic format negotiation functions | |
| 739 | −a special ioctl to enumerate all image formats supported by video | |
| 740 | −capture, overlay or output devices is available.<footnote> | |
| 741 | − <para>Enumerating formats an application has no a-priori | |
| 742 | −knowledge of (otherwise it could explicitly ask for them and need not | |
| 743 | −enumerate) seems useless, but there are applications serving as proxy | |
| 744 | −between drivers and the actual video applications for which this is | |
| 745 | −useful.</para> | |
| 746 | − </footnote></para> | |
| 747 | − | |
| 748 | − <para>The &VIDIOC-ENUM-FMT; ioctl must be supported | |
| 749 | −by all drivers exchanging image data with applications.</para> | |
| 750 | − | |
| 751 | − <important> | |
| 752 | − <para>Drivers are not supposed to convert image formats in | |
| 753 | −kernel space. They must enumerate only formats directly supported by | |
| 754 | −the hardware. If necessary driver writers should publish an example | |
| 755 | −conversion routine or library for integration into applications.</para> | |
| 756 | − </important> | |
| 757 | − </section> | |
| 758 | − </section> | |
| 759 | − | |
| 760 | − &sub-planar-apis; | |
| 761 | − | |
| 762 | − <section id="crop"> | |
| 763 | − <title>Image Cropping, Insertion and Scaling</title> | |
| 764 | − | |
| 765 | − <para>Some video capture devices can sample a subsection of the | |
| 766 | −picture and shrink or enlarge it to an image of arbitrary size. We | |
| 767 | −call these abilities cropping and scaling. Some video output devices | |
| 768 | −can scale an image up or down and insert it at an arbitrary scan line | |
| 769 | −and horizontal offset into a video signal.</para> | |
| 770 | − | |
| 771 | − <para>Applications can use the following API to select an area in | |
| 772 | −the video signal, query the default area and the hardware limits. | |
| 773 | −<emphasis>Despite their name, the &VIDIOC-CROPCAP;, &VIDIOC-G-CROP; | |
| 774 | −and &VIDIOC-S-CROP; ioctls apply to input as well as output | |
| 775 | −devices.</emphasis></para> | |
| 776 | − | |
| 777 | − <para>Scaling requires a source and a target. On a video capture | |
| 778 | −or overlay device the source is the video signal, and the cropping | |
| 779 | −ioctls determine the area actually sampled. The target are images | |
| 780 | −read by the application or overlaid onto the graphics screen. Their | |
| 781 | −size (and position for an overlay) is negotiated with the | |
| 782 | −&VIDIOC-G-FMT; and &VIDIOC-S-FMT; ioctls.</para> | |
| 783 | − | |
| 784 | − <para>On a video output device the source are the images passed in | |
| 785 | −by the application, and their size is again negotiated with the | |
| 786 | −<constant>VIDIOC_G/S_FMT</constant> ioctls, or may be encoded in a | |
| 787 | −compressed video stream. The target is the video signal, and the | |
| 788 | −cropping ioctls determine the area where the images are | |
| 789 | −inserted.</para> | |
| 790 | − | |
| 791 | − <para>Source and target rectangles are defined even if the device | |
| 792 | −does not support scaling or the <constant>VIDIOC_G/S_CROP</constant> | |
| 793 | −ioctls. Their size (and position where applicable) will be fixed in | |
| 794 | −this case. <emphasis>All capture and output device must support the | |
| 795 | −<constant>VIDIOC_CROPCAP</constant> ioctl such that applications can | |
| 796 | −determine if scaling takes place.</emphasis></para> | |
| 797 | − | |
| 798 | − <section> | |
| 799 | − <title>Cropping Structures</title> | |
| 800 | − | |
| 801 | − <figure id="crop-scale"> | |
| 802 | − <title>Image Cropping, Insertion and Scaling</title> | |
| 803 | − <mediaobject> | |
| 804 | − <imageobject> | |
| 805 | − <imagedata fileref="crop.pdf" format="PS" /> | |
| 806 | − </imageobject> | |
| 807 | − <imageobject> | |
| 808 | − <imagedata fileref="crop.gif" format="GIF" /> | |
| 809 | − </imageobject> | |
| 810 | − <textobject> | |
| 811 | − <phrase>The cropping, insertion and scaling process</phrase> | |
| 812 | − </textobject> | |
| 813 | − </mediaobject> | |
| 814 | − </figure> | |
| 815 | − | |
| 816 | − <para>For capture devices the coordinates of the top left | |
| 817 | −corner, width and height of the area which can be sampled is given by | |
| 818 | −the <structfield>bounds</structfield> substructure of the | |
| 819 | −&v4l2-cropcap; returned by the <constant>VIDIOC_CROPCAP</constant> | |
| 820 | −ioctl. To support a wide range of hardware this specification does not | |
| 821 | −define an origin or units. However by convention drivers should | |
| 822 | −horizontally count unscaled samples relative to 0H (the leading edge | |
| 823 | −of the horizontal sync pulse, see <xref linkend="vbi-hsync" />). | |
| 824 | −Vertically ITU-R line | |
| 825 | −numbers of the first field (<xref linkend="vbi-525" />, <xref | |
| 826 | −linkend="vbi-625" />), multiplied by two if the driver can capture both | |
| 827 | −fields.</para> | |
| 828 | − | |
| 829 | − <para>The top left corner, width and height of the source | |
| 830 | −rectangle, that is the area actually sampled, is given by &v4l2-crop; | |
| 831 | −using the same coordinate system as &v4l2-cropcap;. Applications can | |
| 832 | −use the <constant>VIDIOC_G_CROP</constant> and | |
| 833 | −<constant>VIDIOC_S_CROP</constant> ioctls to get and set this | |
| 834 | −rectangle. It must lie completely within the capture boundaries and | |
| 835 | −the driver may further adjust the requested size and/or position | |
| 836 | −according to hardware limitations.</para> | |
| 837 | − | |
| 838 | − <para>Each capture device has a default source rectangle, given | |
| 839 | −by the <structfield>defrect</structfield> substructure of | |
| 840 | −&v4l2-cropcap;. The center of this rectangle shall align with the | |
| 841 | −center of the active picture area of the video signal, and cover what | |
| 842 | −the driver writer considers the complete picture. Drivers shall reset | |
| 843 | −the source rectangle to the default when the driver is first loaded, | |
| 844 | −but not later.</para> | |
| 845 | − | |
| 846 | − <para>For output devices these structures and ioctls are used | |
| 847 | −accordingly, defining the <emphasis>target</emphasis> rectangle where | |
| 848 | −the images will be inserted into the video signal.</para> | |
| 849 | − | |
| 850 | − </section> | |
| 851 | − | |
| 852 | − <section> | |
| 853 | − <title>Scaling Adjustments</title> | |
| 854 | − | |
| 855 | − <para>Video hardware can have various cropping, insertion and | |
| 856 | −scaling limitations. It may only scale up or down, support only | |
| 857 | −discrete scaling factors, or have different scaling abilities in | |
| 858 | −horizontal and vertical direction. Also it may not support scaling at | |
| 859 | −all. At the same time the &v4l2-crop; rectangle may have to be | |
| 860 | −aligned, and both the source and target rectangles may have arbitrary | |
| 861 | −upper and lower size limits. In particular the maximum | |
| 862 | −<structfield>width</structfield> and <structfield>height</structfield> | |
| 863 | −in &v4l2-crop; may be smaller than the | |
| 864 | −&v4l2-cropcap;.<structfield>bounds</structfield> area. Therefore, as | |
| 865 | −usual, drivers are expected to adjust the requested parameters and | |
| 866 | −return the actual values selected.</para> | |
| 867 | − | |
| 868 | − <para>Applications can change the source or the target rectangle | |
| 869 | −first, as they may prefer a particular image size or a certain area in | |
| 870 | −the video signal. If the driver has to adjust both to satisfy hardware | |
| 871 | −limitations, the last requested rectangle shall take priority, and the | |
| 872 | −driver should preferably adjust the opposite one. The &VIDIOC-TRY-FMT; | |
| 873 | −ioctl however shall not change the driver state and therefore only | |
| 874 | −adjust the requested rectangle.</para> | |
| 875 | − | |
| 876 | − <para>Suppose scaling on a video capture device is restricted to | |
| 877 | −a factor 1:1 or 2:1 in either direction and the target image size must | |
| 878 | −be a multiple of 16 × 16 pixels. The source cropping | |
| 879 | −rectangle is set to defaults, which are also the upper limit in this | |
| 880 | −example, of 640 × 400 pixels at offset 0, 0. An | |
| 881 | −application requests an image size of 300 × 225 | |
| 882 | −pixels, assuming video will be scaled down from the "full picture" | |
| 883 | −accordingly. The driver sets the image size to the closest possible | |
| 884 | −values 304 × 224, then chooses the cropping rectangle | |
| 885 | −closest to the requested size, that is 608 × 224 | |
| 886 | −(224 × 2:1 would exceed the limit 400). The offset | |
| 887 | −0, 0 is still valid, thus unmodified. Given the default cropping | |
| 888 | −rectangle reported by <constant>VIDIOC_CROPCAP</constant> the | |
| 889 | −application can easily propose another offset to center the cropping | |
| 890 | −rectangle.</para> | |
| 891 | − | |
| 892 | − <para>Now the application may insist on covering an area using a | |
| 893 | −picture aspect ratio closer to the original request, so it asks for a | |
| 894 | −cropping rectangle of 608 × 456 pixels. The present | |
| 895 | −scaling factors limit cropping to 640 × 384, so the | |
| 896 | −driver returns the cropping size 608 × 384 and adjusts | |
| 897 | −the image size to closest possible 304 × 192.</para> | |
| 898 | − | |
| 899 | − </section> | |
| 900 | − | |
| 901 | − <section> | |
| 902 | − <title>Examples</title> | |
| 903 | − | |
| 904 | − <para>Source and target rectangles shall remain unchanged across | |
| 905 | −closing and reopening a device, such that piping data into or out of a | |
| 906 | −device will work without special preparations. More advanced | |
| 907 | −applications should ensure the parameters are suitable before starting | |
| 908 | −I/O.</para> | |
| 909 | − | |
| 910 | − <example> | |
| 911 | − <title>Resetting the cropping parameters</title> | |
| 912 | − | |
| 913 | − <para>(A video capture device is assumed; change | |
| 914 | −<constant>V4L2_BUF_TYPE_VIDEO_CAPTURE</constant> for other | |
| 915 | −devices.)</para> | |
| 916 | − | |
| 917 | − <programlisting> | |
| 918 | −&v4l2-cropcap; cropcap; | |
| 919 | −&v4l2-crop; crop; | |
| 920 | − | |
| 921 | −memset (&cropcap, 0, sizeof (cropcap)); | |
| 922 | −cropcap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
| 923 | − | |
| 924 | −if (-1 == ioctl (fd, &VIDIOC-CROPCAP;, &cropcap)) { | |
| 925 | − perror ("VIDIOC_CROPCAP"); | |
| 926 | − exit (EXIT_FAILURE); | |
| 927 | −} | |
| 928 | − | |
| 929 | −memset (&crop, 0, sizeof (crop)); | |
| 930 | −crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
| 931 | −crop.c = cropcap.defrect; | |
| 932 | − | |
| 933 | −/* Ignore if cropping is not supported (EINVAL). */ | |
| 934 | − | |
| 935 | −if (-1 == ioctl (fd, &VIDIOC-S-CROP;, &crop) | |
| 936 | − && errno != EINVAL) { | |
| 937 | − perror ("VIDIOC_S_CROP"); | |
| 938 | − exit (EXIT_FAILURE); | |
| 939 | −} | |
| 940 | − </programlisting> | |
| 941 | − </example> | |
| 942 | − | |
| 943 | − <example> | |
| 944 | − <title>Simple downscaling</title> | |
| 945 | − | |
| 946 | − <para>(A video capture device is assumed.)</para> | |
| 947 | − | |
| 948 | − <programlisting> | |
| 949 | −&v4l2-cropcap; cropcap; | |
| 950 | −&v4l2-format; format; | |
| 951 | − | |
| 952 | −reset_cropping_parameters (); | |
| 953 | − | |
| 954 | −/* Scale down to 1/4 size of full picture. */ | |
| 955 | − | |
| 956 | −memset (&format, 0, sizeof (format)); /* defaults */ | |
| 957 | − | |
| 958 | −format.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
| 959 | − | |
| 960 | −format.fmt.pix.width = cropcap.defrect.width >> 1; | |
| 961 | −format.fmt.pix.height = cropcap.defrect.height >> 1; | |
| 962 | −format.fmt.pix.pixelformat = V4L2_PIX_FMT_YUYV; | |
| 963 | − | |
| 964 | −if (-1 == ioctl (fd, &VIDIOC-S-FMT;, &format)) { | |
| 965 | − perror ("VIDIOC_S_FORMAT"); | |
| 966 | − exit (EXIT_FAILURE); | |
| 967 | −} | |
| 968 | − | |
| 969 | −/* We could check the actual image size now, the actual scaling factor | |
| 970 | − or if the driver can scale at all. */ | |
| 971 | − </programlisting> | |
| 972 | − </example> | |
| 973 | − | |
| 974 | − <example> | |
| 975 | − <title>Selecting an output area</title> | |
| 976 | − | |
| 977 | − <programlisting> | |
| 978 | −&v4l2-cropcap; cropcap; | |
| 979 | −&v4l2-crop; crop; | |
| 980 | − | |
| 981 | −memset (&cropcap, 0, sizeof (cropcap)); | |
| 982 | −cropcap.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; | |
| 983 | − | |
| 984 | −if (-1 == ioctl (fd, VIDIOC_CROPCAP;, &cropcap)) { | |
| 985 | − perror ("VIDIOC_CROPCAP"); | |
| 986 | − exit (EXIT_FAILURE); | |
| 987 | −} | |
| 988 | − | |
| 989 | −memset (&crop, 0, sizeof (crop)); | |
| 990 | − | |
| 991 | −crop.type = V4L2_BUF_TYPE_VIDEO_OUTPUT; | |
| 992 | −crop.c = cropcap.defrect; | |
| 993 | − | |
| 994 | −/* Scale the width and height to 50 % of their original size | |
| 995 | − and center the output. */ | |
| 996 | − | |
| 997 | −crop.c.width /= 2; | |
| 998 | −crop.c.height /= 2; | |
| 999 | −crop.c.left += crop.c.width / 2; | |
| 1000 | −crop.c.top += crop.c.height / 2; | |
| 1001 | − | |
| 1002 | −/* Ignore if cropping is not supported (EINVAL). */ | |
| 1003 | − | |
| 1004 | −if (-1 == ioctl (fd, VIDIOC_S_CROP, &crop) | |
| 1005 | − && errno != EINVAL) { | |
| 1006 | − perror ("VIDIOC_S_CROP"); | |
| 1007 | − exit (EXIT_FAILURE); | |
| 1008 | −} | |
| 1009 | −</programlisting> | |
| 1010 | − </example> | |
| 1011 | − | |
| 1012 | − <example> | |
| 1013 | − <title>Current scaling factor and pixel aspect</title> | |
| 1014 | − | |
| 1015 | − <para>(A video capture device is assumed.)</para> | |
| 1016 | − | |
| 1017 | − <programlisting> | |
| 1018 | −&v4l2-cropcap; cropcap; | |
| 1019 | −&v4l2-crop; crop; | |
| 1020 | −&v4l2-format; format; | |
| 1021 | −double hscale, vscale; | |
| 1022 | −double aspect; | |
| 1023 | −int dwidth, dheight; | |
| 1024 | − | |
| 1025 | −memset (&cropcap, 0, sizeof (cropcap)); | |
| 1026 | −cropcap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
| 1027 | − | |
| 1028 | −if (-1 == ioctl (fd, &VIDIOC-CROPCAP;, &cropcap)) { | |
| 1029 | − perror ("VIDIOC_CROPCAP"); | |
| 1030 | − exit (EXIT_FAILURE); | |
| 1031 | −} | |
| 1032 | − | |
| 1033 | −memset (&crop, 0, sizeof (crop)); | |
| 1034 | −crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
| 1035 | − | |
| 1036 | −if (-1 == ioctl (fd, &VIDIOC-G-CROP;, &crop)) { | |
| 1037 | − if (errno != EINVAL) { | |
| 1038 | − perror ("VIDIOC_G_CROP"); | |
| 1039 | − exit (EXIT_FAILURE); | |
| 1040 | − } | |
| 1041 | − | |
| 1042 | − /* Cropping not supported. */ | |
| 1043 | − crop.c = cropcap.defrect; | |
| 1044 | −} | |
| 1045 | − | |
| 1046 | −memset (&format, 0, sizeof (format)); | |
| 1047 | −format.fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
| 1048 | − | |
| 1049 | −if (-1 == ioctl (fd, &VIDIOC-G-FMT;, &format)) { | |
| 1050 | − perror ("VIDIOC_G_FMT"); | |
| 1051 | − exit (EXIT_FAILURE); | |
| 1052 | −} | |
| 1053 | − | |
| 1054 | −/* The scaling applied by the driver. */ | |
| 1055 | − | |
| 1056 | −hscale = format.fmt.pix.width / (double) crop.c.width; | |
| 1057 | −vscale = format.fmt.pix.height / (double) crop.c.height; | |
| 1058 | − | |
| 1059 | −aspect = cropcap.pixelaspect.numerator / | |
| 1060 | − (double) cropcap.pixelaspect.denominator; | |
| 1061 | −aspect = aspect * hscale / vscale; | |
| 1062 | − | |
| 1063 | −/* Devices following ITU-R BT.601 do not capture | |
| 1064 | − square pixels. For playback on a computer monitor | |
| 1065 | − we should scale the images to this size. */ | |
| 1066 | − | |
| 1067 | −dwidth = format.fmt.pix.width / aspect; | |
| 1068 | −dheight = format.fmt.pix.height; | |
| 1069 | − </programlisting> | |
| 1070 | − </example> | |
| 1071 | − </section> | |
| 1072 | − </section> | |
| 1073 | − | |
| 1074 | − &sub-selection-api; | |
| 1075 | − | |
| 1076 | − <section id="streaming-par"> | |
| 1077 | − <title>Streaming Parameters</title> | |
| 1078 | − | |
| 1079 | − <para>Streaming parameters are intended to optimize the video | |
| 1080 | −capture process as well as I/O. Presently applications can request a | |
| 1081 | −high quality capture mode with the &VIDIOC-S-PARM; ioctl.</para> | |
| 1082 | − | |
| 1083 | − <para>The current video standard determines a nominal number of | |
| 1084 | −frames per second. If less than this number of frames is to be | |
| 1085 | −captured or output, applications can request frame skipping or | |
| 1086 | −duplicating on the driver side. This is especially useful when using | |
| 1087 | −the &func-read; or &func-write;, which are not augmented by timestamps | |
| 1088 | −or sequence counters, and to avoid unnecessary data copying.</para> | |
| 1089 | − | |
| 1090 | − <para>Finally these ioctls can be used to determine the number of | |
| 1091 | −buffers used internally by a driver in read/write mode. For | |
| 1092 | −implications see the section discussing the &func-read; | |
| 1093 | −function.</para> | |
| 1094 | − | |
| 1095 | − <para>To get and set the streaming parameters applications call | |
| 1096 | −the &VIDIOC-G-PARM; and &VIDIOC-S-PARM; ioctl, respectively. They take | |
| 1097 | −a pointer to a &v4l2-streamparm;, which contains a union holding | |
| 1098 | −separate parameters for input and output devices.</para> | |
| 1099 | − | |
| 1100 | − <para>These ioctls are optional, drivers need not implement | |
| 1101 | −them. If so, they return the &EINVAL;.</para> | |
| 1102 | − </section> | |
| @@ -1,2723 +0,0 @@ | ||
| 1 | − <title>Changes</title> | |
| 2 | − | |
| 3 | − <para>The following chapters document the evolution of the V4L2 API, | |
| 4 | −errata or extensions. They are also intended to help application and | |
| 5 | −driver writers to port or update their code.</para> | |
| 6 | − | |
| 7 | − <section id="diff-v4l"> | |
| 8 | − <title>Differences between V4L and V4L2</title> | |
| 9 | − | |
| 10 | − <para>The Video For Linux API was first introduced in Linux 2.1 to | |
| 11 | −unify and replace various TV and radio device related interfaces, | |
| 12 | −developed independently by driver writers in prior years. Starting | |
| 13 | −with Linux 2.5 the much improved V4L2 API replaces the V4L API. | |
| 14 | −The support for the old V4L calls were removed from Kernel, but the | |
| 15 | −library <xref linkend="libv4l" /> supports the conversion of a V4L | |
| 16 | −API system call into a V4L2 one.</para> | |
| 17 | − | |
| 18 | − <section> | |
| 19 | − <title>Opening and Closing Devices</title> | |
| 20 | − | |
| 21 | − <para>For compatibility reasons the character device file names | |
| 22 | −recommended for V4L2 video capture, overlay, radio and raw | |
| 23 | −vbi capture devices did not change from those used by V4L. They are | |
| 24 | −listed in <xref linkend="devices" /> and below in <xref | |
| 25 | − linkend="v4l-dev" />.</para> | |
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