/* * Copyright (c) 1999-2000 Image Power, Inc. and the University of *   British Columbia. * Copyright (c) 2001-2002 Michael David Adams. * All rights reserved. */ /* __START_OF_JASPER_LICENSE__ *  * JasPer License Version 2.0 *  * Copyright (c) 2001-2006 Michael David Adams * Copyright (c) 1999-2000 Image Power, Inc. * Copyright (c) 1999-2000 The University of British Columbia *  * All rights reserved. *  * Permission is hereby granted, free of charge, to any person (the * "User") obtaining a copy of this software and associated documentation * files (the "Software"), to deal in the Software without restriction, * including without limitation the rights to use, copy, modify, merge, * publish, distribute, and/or sell copies of the Software, and to permit * persons to whom the Software is furnished to do so, subject to the * following conditions: *  * 1.  The above copyright notices and this permission notice (which * includes the disclaimer below) shall be included in all copies or * substantial portions of the Software. *  * 2.  The name of a copyright holder shall not be used to endorse or * promote products derived from the Software without specific prior * written permission. *  * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS * LICENSE.  NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER * THIS DISCLAIMER.  THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS * "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A * PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.  IN NO * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL * INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.  NO ASSURANCES ARE * PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE * THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY. * EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS * BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL * PROPERTY RIGHTS OR OTHERWISE.  AS A CONDITION TO EXERCISING THE RIGHTS * GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE * ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY.  THE SOFTWARE * IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL * SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES, * AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL * SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH * THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH, * PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH * RISK ACTIVITIES").  THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY * EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES. *  * __END_OF_JASPER_LICENSE__ */ /* * JPEG-2000 Decoder * * $Id$ */ #ifndef JPC_DEC_H#define JPC_DEC_H /******************************************************************************\* Includes.\******************************************************************************/ #include "jasper/jas_stream.h"#include "jasper/jas_image.h" #include "jpc_cod.h"#include "jpc_tsfb.h"#include "jpc_tagtree.h"#include "jpc_cs.h"#include "jpc_t1cod.h"#include "jpc_t2cod.h" /******************************************************************************\* Below are some ugly warts necessary to support packed packet headers.\******************************************************************************/ /* PPM/PPT marker segment table entry. */ typedef struct { 	/* The index for this entry. */	uint_fast16_t ind; 	/* The data length. */	uint_fast32_t len; 	/* The data. */	jas_uchar *data; } jpc_ppxstabent_t; /* PPM/PPT marker segment table. */ typedef struct { 	/* The number of entries. */	unsigned numents; 	/* The maximum number of entries (i.e., the allocated size of the array	  below). */	unsigned maxents; 	/* The table entries. */	jpc_ppxstabent_t **ents; } jpc_ppxstab_t; /* Stream list class. */ typedef struct { 	/* The number of streams in this list. */	unsigned numstreams; 	/* The maximum number of streams that can be accomodated without	  growing the streams array. */	unsigned maxstreams; 	/* The streams. */	jas_stream_t **streams; } jpc_streamlist_t; /******************************************************************************\* Coding parameters class.\******************************************************************************/ /* Per-component coding parameters. */ typedef struct { 	/* How were various coding parameters set? */	unsigned flags; 	/* Per-component coding style parameters (e.g., explicit precinct sizes) */	uint_fast8_t csty; 	/* The number of resolution levels. */	uint_fast8_t numrlvls; 	/* The code block width exponent. */	uint_fast8_t cblkwidthexpn; 	/* The code block height exponent. */	uint_fast8_t cblkheightexpn; 	/* The QMFB ID. */	uint_fast8_t qmfbid; 	/* The quantization style. */	uint_fast8_t qsty; 	/* The number of quantizer step sizes. */	uint_fast16_t numstepsizes; 	/* The step sizes. */	uint_fast16_t stepsizes[3 * JPC_MAXRLVLS + 1]; 	/* The number of guard bits. */	uint_fast8_t numguardbits; 	/* The ROI shift value. */	uint_fast8_t roishift; 	/* The code block parameters. */	uint_fast8_t cblkctx; 	/* The precinct width exponents. */	uint_fast8_t prcwidthexpns[JPC_MAXRLVLS]; 	/* The precinct height exponents. */	uint_fast8_t prcheightexpns[JPC_MAXRLVLS]; } jpc_dec_ccp_t; /* Coding paramters. */ typedef struct { 	/* How were these coding parameters set? */	unsigned flags; 	/* Progression change list. */	jpc_pchglist_t *pchglist; 	/* Progression order. */	uint_fast8_t prgord; 	/* The number of layers. */	uint_fast16_t numlyrs; 	/* The MCT ID. */	uint_fast8_t mctid; 	/* The coding style parameters (e.g., SOP, EPH). */	uint_fast8_t csty; 	/* The number of components. */	unsigned numcomps; 	/* The per-component coding parameters. */	jpc_dec_ccp_t *ccps; } jpc_dec_cp_t; /******************************************************************************\* Decoder class.\******************************************************************************/ /* Decoder per-segment state information. */ typedef struct jpc_dec_seg_s { 	/* The next segment in the list. */	struct jpc_dec_seg_s *next; 	/* The previous segment in the list. */	struct jpc_dec_seg_s *prev; 	/* The starting pass number for this segment. */	unsigned passno; 	/* The number of passes in this segment. */	unsigned numpasses; 	/* The maximum number of passes in this segment. */	unsigned maxpasses; 	/* The type of data in this segment (i.e., MQ or raw). */	enum jpc_segtype type; 	/* A stream containing the data for this segment. */	jas_stream_t *stream; 	/* The number of bytes destined for this segment from the packet	  currently being decoded. */	unsigned cnt; 	/* A flag indicating if this segment has been terminated. */	int complete; 	/* The layer number to which this segment belongs. */	/* If the segment spans multiple layers, then the largest layer number	  spanned by the segment is used. */	unsigned lyrno; } jpc_dec_seg_t; /* Decoder segment list. */ typedef struct { 	/* The first entry in the list. */	jpc_dec_seg_t *head; 	/* The last entry in the list. */	jpc_dec_seg_t *tail; } jpc_dec_seglist_t; /* Decoder per-code-block state information. */ typedef struct { 	/* The number of passes. */	unsigned numpasses; 	/* A list of segments that still need to be decoded. */	jpc_dec_seglist_t segs; 	/* The first incomplete/partial segment. */	jpc_dec_seg_t *curseg; 	/* The number of leading insignificant bit planes for this code block. */	unsigned numimsbs; 	/* The number of bits used to encode pass data lengths. */	unsigned numlenbits; 	/* The first pass number containing data for this code block. */	unsigned firstpassno; 	/* The sample data associated with this code block. */	jas_matrix_t *data; } jpc_dec_cblk_t; /* Decoder per-code-block-group state information. */ typedef struct { 	/* The x-coordinate of the top-left corner of the precinct. */	uint_fast32_t xstart; 	/* The y-coordinate of the top-left corner of the precinct. */	uint_fast32_t ystart; 	/* The x-coordinate of the bottom-right corner of the precinct	  (plus one). */	uint_fast32_t xend; 	/* The y-coordinate of the bottom-right corner of the precinct	  (plus one). */	uint_fast32_t yend; 	/* The number of code blocks spanning this precinct in the horizontal	  direction. */	unsigned numhcblks; 	/* The number of code blocks spanning this precinct in the vertical	  direction. */	unsigned numvcblks; 	/* The total number of code blocks in this precinct. */	unsigned numcblks; 	/* The per code block information. */	jpc_dec_cblk_t *cblks; 	/* The inclusion tag tree. */	jpc_tagtree_t *incltagtree; 	/* The insignificant MSBs tag tree. */	jpc_tagtree_t *numimsbstagtree; } jpc_dec_prc_t; /* Decoder per-band state information. */ typedef struct { 	/* The per-code-block-group state information. */	jpc_dec_prc_t *prcs; 	/* The sample data associated with this band. */	jas_matrix_t *data; 	/* The orientation of this band (i.e., LL, LH, HL, or HH). */	enum jpc_tsfb_orient orient; 	/* The encoded quantizer step size. */	unsigned stepsize; 	/* The absolute quantizer step size. */	jpc_fix_t absstepsize; 	/* The number of bit planes for this band. */	unsigned numbps; 	/* The analysis gain associated with this band. */	int analgain; 	/* The ROI shift value for this band. */	int roishift; } jpc_dec_band_t; /* Decoder per-resolution-level state information. */ typedef struct { 	/* The number of bands associated with this resolution level. */	unsigned numbands; 	/* The per-band information. */	jpc_dec_band_t *bands; 	/* The x-coordinate of the top-left corner of the tile-component	  at this resolution. */	uint_fast32_t xstart; 	/* The y-coordinate of the top-left corner of the tile-component	  at this resolution. */	uint_fast32_t ystart; 	/* The x-coordinate of the bottom-right corner of the tile-component	  at this resolution (plus one). */	uint_fast32_t xend; 	/* The y-coordinate of the bottom-right corner of the tile-component	  at this resolution (plus one). */	uint_fast32_t yend; 	/* The exponent value for the nominal precinct width measured	  relative to the associated LL band. */	unsigned prcwidthexpn; 	/* The exponent value for the nominal precinct height measured	  relative to the associated LL band. */	unsigned prcheightexpn; 	/* The number of precincts in the horizontal direction. */	unsigned numhprcs; 	/* The number of precincts in the vertical direction. */	unsigned numvprcs; 	/* The total number of precincts. */	unsigned numprcs; 	/* The exponent value for the nominal code block group width.	  This quantity is associated with the next lower resolution level	  (assuming that there is one). */	unsigned cbgwidthexpn; 	/* The exponent value for the nominal code block group height	  This quantity is associated with the next lower resolution level	  (assuming that there is one). */	unsigned cbgheightexpn; 	/* The exponent value for the code block width. */	uint_fast16_t cblkwidthexpn; 	/* The exponent value for the code block height. */	uint_fast16_t cblkheightexpn; } jpc_dec_rlvl_t; /* Decoder per-tile-component state information. */ typedef struct { 	/* The x-coordinate of the top-left corner of the tile-component	  in the coordinate system of the tile-component. */	uint_fast32_t xstart; 	/* The y-coordinate of the top-left corner of the tile-component	  in the coordinate system of the tile-component. */	uint_fast32_t ystart; 	/* The x-coordinate of the bottom-right corner of the tile-component	  in the coordinate system of the tile-component (plus one). */	uint_fast32_t xend; 	/* The y-coordinate of the bottom-right corner of the tile-component	  in the coordinate system of the tile-component (plus one). */	uint_fast32_t yend; 	/* The component data for the current tile. */	jas_matrix_t *data; 	/* The number of resolution levels. */	unsigned numrlvls; 	/* The per resolution level information. */	jpc_dec_rlvl_t *rlvls; 	/* The TSFB. */	jpc_tsfb_t *tsfb; } jpc_dec_tcomp_t; /* * Tile states. */ #define	JPC_TILE_INIT	0#define	JPC_TILE_ACTIVE	1#define	JPC_TILE_ACTIVELAST	2#define	JPC_TILE_DONE	3 /* Decoder per-tile state information. */ typedef struct { 	/* The processing state for this tile. */	int state; 	/* The x-coordinate of the top-left corner of the tile on the reference	  grid. */	uint_fast32_t xstart; 	/* The y-coordinate of the top-left corner of the tile on the reference	  grid. */	uint_fast32_t ystart; 	/* The x-coordinate of the bottom-right corner of the tile on the	  reference grid (plus one). */	uint_fast32_t xend; 	/* The y-coordinate of the bottom-right corner of the tile on the	  reference grid (plus one). */	uint_fast32_t yend; 	/* The packed packet header data for this tile. */	jpc_ppxstab_t *pptstab;

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