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lavfi: add a filter for uploading normal frames to CUDA

Anton Khirnov committed 10 years ago

Commit 21f7cd41 parent 1bf34135 files · +251 −0Browse files

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5 files
  1. configure +1 −0
  2. doc/filters.texi +11 −0
  3. libavfilter/Makefile +1 −0
  4. libavfilter/allfilters.c +1 −0
  5. libavfilter/vf_hwupload_cuda.c +237 −0
configure+1−0
@@ -2382,6 +2382,7 @@ frei0r_filter_extralibs='$ldl' · 2381 unmodified lines
23822382 frei0r_src_filter_deps="frei0r dlopen"
23832383 frei0r_src_filter_extralibs='$ldl'
23842384 hqdn3d_filter_deps="gpl"
2385+hwupload_cuda_filter_deps="cuda"
23852386 interlace_filter_deps="gpl"
23862387 ocv_filter_deps="libopencv"
23872388 resample_filter_deps="avresample"
doc/filters.texi+11−0
@@ -1610,6 +1610,17 @@ A floating point number which specifies chroma temporal strength. It defaults to · 1609 unmodified lines
16101610 @var{luma_tmp}*@var{chroma_spatial}/@var{luma_spatial}.
16111611 @end table
16121612
1613+@section hwupload_cuda
1614+
1615+Upload system memory frames to a CUDA device.
1616+
1617+It accepts the following optional parameters:
1618+
1619+@table @option
1620+@item device
1621+The number of the CUDA device to use
1622+@end table
1623+
16131624 @section interlace
16141625
16151626 Simple interlacing filter from progressive contents. This interleaves upper (or
libavfilter/Makefile+1−0
@@ -56,6 +56,7 @@ OBJS-$(CONFIG_FREI0R_FILTER) += vf_frei0r.o · 55 unmodified lines
5656 OBJS-$(CONFIG_GRADFUN_FILTER) += vf_gradfun.o
5757 OBJS-$(CONFIG_HFLIP_FILTER) += vf_hflip.o
5858 OBJS-$(CONFIG_HQDN3D_FILTER) += vf_hqdn3d.o
59+OBJS-$(CONFIG_HWUPLOAD_CUDA_FILTER) += vf_hwupload_cuda.o
5960 OBJS-$(CONFIG_INTERLACE_FILTER) += vf_interlace.o
6061 OBJS-$(CONFIG_LUT_FILTER) += vf_lut.o
6162 OBJS-$(CONFIG_LUTRGB_FILTER) += vf_lut.o
libavfilter/allfilters.c+1−0
@@ -82,6 +82,7 @@ void avfilter_register_all(void) · 81 unmodified lines
8282 REGISTER_FILTER(GRADFUN, gradfun, vf);
8383 REGISTER_FILTER(HFLIP, hflip, vf);
8484 REGISTER_FILTER(HQDN3D, hqdn3d, vf);
85+ REGISTER_FILTER(HWUPLOAD_CUDA, hwupload_cuda, vf);
8586 REGISTER_FILTER(INTERLACE, interlace, vf);
8687 REGISTER_FILTER(LUT, lut, vf);
8788 REGISTER_FILTER(LUTRGB, lutrgb, vf);
libavfilter/vf_hwupload_cuda.c+237−0
@@ -0,0 +1,237 @@
1+/*
2+ * This file is part of Libav.
3+ *
4+ * Libav is free software; you can redistribute it and/or
5+ * modify it under the terms of the GNU Lesser General Public
6+ * License as published by the Free Software Foundation; either
7+ * version 2.1 of the License, or (at your option) any later version.
8+ *
9+ * Libav is distributed in the hope that it will be useful,
10+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
11+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12+ * Lesser General Public License for more details.
13+ *
14+ * You should have received a copy of the GNU Lesser General Public
15+ * License along with Libav; if not, write to the Free Software
16+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17+ */
18+
19+#include "libavutil/buffer.h"
20+#include "libavutil/hwcontext.h"
21+#include "libavutil/hwcontext_cuda.h"
22+#include "libavutil/log.h"
23+#include "libavutil/opt.h"
24+
25+#include "avfilter.h"
26+#include "formats.h"
27+#include "internal.h"
28+#include "video.h"
29+
30+typedef struct CudaUploadContext {
31+ const AVClass *class;
32+ int device_idx;
33+
34+ AVBufferRef *hwdevice;
35+ AVBufferRef *hwframe;
36+} CudaUploadContext;
37+
38+static void cudaupload_ctx_free(AVHWDeviceContext *ctx)
39+{
40+ AVCUDADeviceContext *hwctx = ctx->hwctx;
41+ cuCtxDestroy(hwctx->cuda_ctx);
42+}
43+
44+static av_cold int cudaupload_init(AVFilterContext *ctx)
45+{
46+ CudaUploadContext *s = ctx->priv;
47+
48+ AVHWDeviceContext *device_ctx;
49+ AVCUDADeviceContext *device_hwctx;
50+ CUdevice device;
51+ CUcontext cuda_ctx = NULL, dummy;
52+ CUresult err;
53+ int ret;
54+
55+ err = cuInit(0);
56+ if (err != CUDA_SUCCESS) {
57+ av_log(ctx, AV_LOG_ERROR, "Could not initialize the CUDA driver API\n");
58+ return AVERROR_UNKNOWN;
59+ }
60+
61+ err = cuDeviceGet(&device, s->device_idx);
62+ if (err != CUDA_SUCCESS) {
63+ av_log(ctx, AV_LOG_ERROR, "Could not get the device number %d\n", s->device_idx);
64+ return AVERROR_UNKNOWN;
65+ }
66+
67+ err = cuCtxCreate(&cuda_ctx, 0, device);
68+ if (err != CUDA_SUCCESS) {
69+ av_log(ctx, AV_LOG_ERROR, "Error creating a CUDA context\n");
70+ return AVERROR_UNKNOWN;
71+ }
72+
73+ cuCtxPopCurrent(&dummy);
74+
75+ s->hwdevice = av_hwdevice_ctx_alloc(AV_HWDEVICE_TYPE_CUDA);
76+ if (!s->hwdevice) {
77+ cuCtxDestroy(cuda_ctx);
78+ return AVERROR(ENOMEM);
79+ }
80+
81+ device_ctx = (AVHWDeviceContext*)s->hwdevice->data;
82+ device_ctx->free = cudaupload_ctx_free;
83+
84+ device_hwctx = device_ctx->hwctx;
85+ device_hwctx->cuda_ctx = cuda_ctx;
86+
87+ ret = av_hwdevice_ctx_init(s->hwdevice);
88+ if (ret < 0)
89+ return ret;
90+
91+ return 0;
92+}
93+
94+static av_cold void cudaupload_uninit(AVFilterContext *ctx)
95+{
96+ CudaUploadContext *s = ctx->priv;
97+
98+ av_buffer_unref(&s->hwframe);
99+ av_buffer_unref(&s->hwdevice);
100+}
101+
102+static int cudaupload_query_formats(AVFilterContext *ctx)
103+{
104+ static const enum AVPixelFormat input_pix_fmts[] = {
105+ AV_PIX_FMT_NV12, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV444P,
106+ AV_PIX_FMT_NONE,
107+ };
108+ static const enum AVPixelFormat output_pix_fmts[] = {
109+ AV_PIX_FMT_CUDA, AV_PIX_FMT_NONE,
110+ };
111+ AVFilterFormats *in_fmts = ff_make_format_list(input_pix_fmts);
112+ AVFilterFormats *out_fmts = ff_make_format_list(output_pix_fmts);
113+
114+ ff_formats_ref(in_fmts, &ctx->inputs[0]->out_formats);
115+ ff_formats_ref(out_fmts, &ctx->outputs[0]->in_formats);
116+
117+ return 0;
118+}
119+
120+static int cudaupload_config_output(AVFilterLink *outlink)
121+{
122+ AVFilterContext *ctx = outlink->src;
123+ AVFilterLink *inlink = ctx->inputs[0];
124+ CudaUploadContext *s = ctx->priv;
125+
126+ AVHWFramesContext *hwframe_ctx;
127+ int ret;
128+
129+ av_buffer_unref(&s->hwframe);
130+ s->hwframe = av_hwframe_ctx_alloc(s->hwdevice);
131+ if (!s->hwframe)
132+ return AVERROR(ENOMEM);
133+
134+ hwframe_ctx = (AVHWFramesContext*)s->hwframe->data;
135+ hwframe_ctx->format = AV_PIX_FMT_CUDA;
136+ hwframe_ctx->sw_format = inlink->format;
137+ hwframe_ctx->width = FFALIGN(inlink->w, 16);
138+ hwframe_ctx->height = FFALIGN(inlink->h, 16);
139+
140+ ret = av_hwframe_ctx_init(s->hwframe);
141+ if (ret < 0)
142+ return ret;
143+
144+ outlink->hw_frames_ctx = av_buffer_ref(s->hwframe);
145+ if (!outlink->hw_frames_ctx)
146+ return AVERROR(ENOMEM);
147+
148+ return 0;
149+}
150+
151+static int cudaupload_filter_frame(AVFilterLink *link, AVFrame *in)
152+{
153+ AVFilterContext *ctx = link->dst;
154+ CudaUploadContext *s = ctx->priv;
155+
156+ AVFrame *out = NULL;
157+ int ret;
158+
159+ out = av_frame_alloc();
160+ if (!out) {
161+ ret = AVERROR(ENOMEM);
162+ goto fail;
163+ }
164+
165+ ret = av_hwframe_get_buffer(s->hwframe, out, 0);
166+ if (ret < 0)
167+ goto fail;
168+
169+ out->width = in->width;
170+ out->height = in->height;
171+
172+ ret = av_hwframe_transfer_data(out, in, 0);
173+ if (ret < 0) {
174+ av_log(ctx, AV_LOG_ERROR, "Error transferring data to the GPU\n");
175+ goto fail;
176+ }
177+
178+ ret = av_frame_copy_props(out, in);
179+ if (ret < 0)
180+ goto fail;
181+
182+ av_frame_free(&in);
183+
184+ return ff_filter_frame(ctx->outputs[0], out);
185+fail:
186+ av_frame_free(&in);
187+ av_frame_free(&out);
188+ return ret;
189+}
190+
191+#define OFFSET(x) offsetof(CudaUploadContext, x)
192+#define FLAGS AV_OPT_FLAG_VIDEO_PARAM
193+static const AVOption options[] = {
194+ { "device", "Number of the device to use", OFFSET(device_idx), AV_OPT_TYPE_INT, { .i64 = 0 }, .flags = FLAGS },
195+ { NULL },
196+};
197+
198+static const AVClass cudaupload_class = {
199+ .class_name = "cudaupload",
200+ .item_name = av_default_item_name,
201+ .option = options,
202+ .version = LIBAVUTIL_VERSION_INT,
203+};
204+
205+static const AVFilterPad cudaupload_inputs[] = {
206+ {
207+ .name = "default",
208+ .type = AVMEDIA_TYPE_VIDEO,
209+ .filter_frame = cudaupload_filter_frame,
210+ },
211+ { NULL }
212+};
213+
214+static const AVFilterPad cudaupload_outputs[] = {
215+ {
216+ .name = "default",
217+ .type = AVMEDIA_TYPE_VIDEO,
218+ .config_props = cudaupload_config_output,
219+ },
220+ { NULL }
221+};
222+
223+AVFilter ff_vf_hwupload_cuda = {
224+ .name = "hwupload_cuda",
225+ .description = NULL_IF_CONFIG_SMALL("Upload a system memory frame to a CUDA device"),
226+
227+ .init = cudaupload_init,
228+ .uninit = cudaupload_uninit,
229+
230+ .query_formats = cudaupload_query_formats,
231+
232+ .priv_size = sizeof(CudaUploadContext),
233+ .priv_class = &cudaupload_class,
234+
235+ .inputs = cudaupload_inputs,
236+ .outputs = cudaupload_outputs,
237+};

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