FFmpeg  4.3.8
libvpxdec.c
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1 /*
2  * Copyright (c) 2010, Google, Inc.
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 /**
22  * @file
23  * VP8/9 decoder support via libvpx
24  */
25 
26 #define VPX_CODEC_DISABLE_COMPAT 1
27 #include <vpx/vpx_decoder.h>
28 #include <vpx/vpx_frame_buffer.h>
29 #include <vpx/vp8dx.h>
30 
31 #include "libavutil/common.h"
32 #include "libavutil/imgutils.h"
33 #include "libavutil/intreadwrite.h"
34 #include "avcodec.h"
35 #include "internal.h"
36 #include "libvpx.h"
37 #include "profiles.h"
38 
39 typedef struct VPxDecoderContext {
40  struct vpx_codec_ctx decoder;
41  struct vpx_codec_ctx decoder_alpha;
43  size_t pool_size;
45 } VPxContext;
46 
47 
48 static int get_frame_buffer(void *priv, size_t min_size, vpx_codec_frame_buffer_t *fb)
49 {
50  VPxContext *ctx = priv;
51  AVBufferRef *buf;
52 
53  if (min_size > ctx->pool_size) {
55  /* According to the libvpx docs the buffer must be zeroed out. */
56  ctx->pool = av_buffer_pool_init(min_size, av_buffer_allocz);
57  if (!ctx->pool) {
58  ctx->pool_size = 0;
59  return AVERROR(ENOMEM);
60  }
61  ctx->pool_size = min_size;
62  }
63 
64  buf = av_buffer_pool_get(ctx->pool);
65  if (!buf)
66  return AVERROR(ENOMEM);
67 
68  fb->priv = buf;
69  fb->size = ctx->pool_size;
70  fb->data = buf->data;
71 
72  return 0;
73 }
74 
75 static int release_frame_buffer(void *priv, vpx_codec_frame_buffer_t *fb)
76 {
77  AVBufferRef *buf = fb->priv;
78  av_buffer_unref(&buf);
79  return 0;
80 }
81 
82 static av_cold int vpx_init(AVCodecContext *avctx,
83  struct vpx_codec_ctx* decoder,
84  const struct vpx_codec_iface *iface)
85 {
86  struct vpx_codec_dec_cfg deccfg = {
87  .threads = FFMIN(avctx->thread_count ? avctx->thread_count : av_cpu_count(), 16)
88  };
89 
90  av_log(avctx, AV_LOG_INFO, "%s\n", vpx_codec_version_str());
91  av_log(avctx, AV_LOG_VERBOSE, "%s\n", vpx_codec_build_config());
92 
93  if (vpx_codec_dec_init(decoder, iface, &deccfg, 0) != VPX_CODEC_OK) {
94  const char *error = vpx_codec_error(decoder);
95  av_log(avctx, AV_LOG_ERROR, "Failed to initialize decoder: %s\n",
96  error);
97  return AVERROR(EINVAL);
98  }
99 
100  if (avctx->codec_id == AV_CODEC_ID_VP9)
101  vpx_codec_set_frame_buffer_functions(decoder, get_frame_buffer, release_frame_buffer, avctx->priv_data);
102 
103  return 0;
104 }
105 
106 // returns 0 on success, AVERROR_INVALIDDATA otherwise
107 static int set_pix_fmt(AVCodecContext *avctx, struct vpx_image *img,
108  int has_alpha_channel)
109 {
110  static const enum AVColorSpace colorspaces[8] = {
113  };
114 #if VPX_IMAGE_ABI_VERSION >= 4
115  static const enum AVColorRange color_ranges[] = {
117  };
118  avctx->color_range = color_ranges[img->range];
119 #endif
120  avctx->colorspace = colorspaces[img->cs];
121  if (avctx->codec_id == AV_CODEC_ID_VP8 && img->fmt != VPX_IMG_FMT_I420)
122  return AVERROR_INVALIDDATA;
123  switch (img->fmt) {
124  case VPX_IMG_FMT_I420:
125  if (avctx->codec_id == AV_CODEC_ID_VP9)
126  avctx->profile = FF_PROFILE_VP9_0;
127  avctx->pix_fmt =
128  has_alpha_channel ? AV_PIX_FMT_YUVA420P : AV_PIX_FMT_YUV420P;
129  return 0;
130 #if CONFIG_LIBVPX_VP9_DECODER
131  case VPX_IMG_FMT_I422:
132  avctx->profile = FF_PROFILE_VP9_1;
133  avctx->pix_fmt = AV_PIX_FMT_YUV422P;
134  return 0;
135  case VPX_IMG_FMT_I440:
136  avctx->profile = FF_PROFILE_VP9_1;
137  avctx->pix_fmt = AV_PIX_FMT_YUV440P;
138  return 0;
139  case VPX_IMG_FMT_I444:
140  avctx->profile = FF_PROFILE_VP9_1;
141  avctx->pix_fmt = avctx->colorspace == AVCOL_SPC_RGB ?
143  return 0;
144  case VPX_IMG_FMT_I42016:
145  avctx->profile = FF_PROFILE_VP9_2;
146  if (img->bit_depth == 10) {
147  avctx->pix_fmt = AV_PIX_FMT_YUV420P10;
148  return 0;
149  } else if (img->bit_depth == 12) {
150  avctx->pix_fmt = AV_PIX_FMT_YUV420P12;
151  return 0;
152  } else {
153  return AVERROR_INVALIDDATA;
154  }
155  case VPX_IMG_FMT_I42216:
156  avctx->profile = FF_PROFILE_VP9_3;
157  if (img->bit_depth == 10) {
158  avctx->pix_fmt = AV_PIX_FMT_YUV422P10;
159  return 0;
160  } else if (img->bit_depth == 12) {
161  avctx->pix_fmt = AV_PIX_FMT_YUV422P12;
162  return 0;
163  } else {
164  return AVERROR_INVALIDDATA;
165  }
166  case VPX_IMG_FMT_I44016:
167  avctx->profile = FF_PROFILE_VP9_3;
168  if (img->bit_depth == 10) {
169  avctx->pix_fmt = AV_PIX_FMT_YUV440P10;
170  return 0;
171  } else if (img->bit_depth == 12) {
172  avctx->pix_fmt = AV_PIX_FMT_YUV440P12;
173  return 0;
174  } else {
175  return AVERROR_INVALIDDATA;
176  }
177  case VPX_IMG_FMT_I44416:
178  avctx->profile = FF_PROFILE_VP9_3;
179  if (img->bit_depth == 10) {
180  avctx->pix_fmt = avctx->colorspace == AVCOL_SPC_RGB ?
182  return 0;
183  } else if (img->bit_depth == 12) {
184  avctx->pix_fmt = avctx->colorspace == AVCOL_SPC_RGB ?
186  return 0;
187  } else {
188  return AVERROR_INVALIDDATA;
189  }
190 #endif
191  default:
192  return AVERROR_INVALIDDATA;
193  }
194 }
195 
196 static int decode_frame(AVCodecContext *avctx, vpx_codec_ctx_t *decoder,
197  uint8_t *data, uint32_t data_sz)
198 {
199  if (vpx_codec_decode(decoder, data, data_sz, NULL, 0) != VPX_CODEC_OK) {
200  const char *error = vpx_codec_error(decoder);
201  const char *detail = vpx_codec_error_detail(decoder);
202 
203  av_log(avctx, AV_LOG_ERROR, "Failed to decode frame: %s\n", error);
204  if (detail) {
205  av_log(avctx, AV_LOG_ERROR, " Additional information: %s\n",
206  detail);
207  }
208  return AVERROR_INVALIDDATA;
209  }
210  return 0;
211 }
212 
213 static int vpx_decode(AVCodecContext *avctx,
214  void *data, int *got_frame, AVPacket *avpkt)
215 {
216  VPxContext *ctx = avctx->priv_data;
217  AVFrame *picture = data;
218  const void *iter = NULL;
219  const void *iter_alpha = NULL;
220  struct vpx_image *img, *img_alpha;
221  int ret;
222  uint8_t *side_data = NULL;
223  int side_data_size = 0;
224 
225  ret = decode_frame(avctx, &ctx->decoder, avpkt->data, avpkt->size);
226  if (ret)
227  return ret;
228 
229  side_data = av_packet_get_side_data(avpkt,
231  &side_data_size);
232  if (side_data_size >= 8) {
233  const uint64_t additional_id = AV_RB64(side_data);
234  side_data += 8;
235  side_data_size -= 8;
236  if (additional_id == 1) { // 1 stands for alpha channel data.
237  if (!ctx->has_alpha_channel) {
238  ctx->has_alpha_channel = 1;
239  ret = vpx_init(avctx,
240  &ctx->decoder_alpha,
242  (avctx->codec_id == AV_CODEC_ID_VP8) ?
243  &vpx_codec_vp8_dx_algo : &vpx_codec_vp9_dx_algo
245  &vpx_codec_vp8_dx_algo
246 #else
247  &vpx_codec_vp9_dx_algo
248 #endif
249  );
250  if (ret)
251  return ret;
252  }
253  ret = decode_frame(avctx, &ctx->decoder_alpha, side_data,
254  side_data_size);
255  if (ret)
256  return ret;
257  }
258  }
259 
260  if ((img = vpx_codec_get_frame(&ctx->decoder, &iter)) &&
261  (!ctx->has_alpha_channel ||
262  (img_alpha = vpx_codec_get_frame(&ctx->decoder_alpha, &iter_alpha)))) {
263  uint8_t *planes[4];
264  int linesizes[4];
265 
266  if (img->d_w > img->w || img->d_h > img->h) {
267  av_log(avctx, AV_LOG_ERROR, "Display dimensions %dx%d exceed storage %dx%d\n",
268  img->d_w, img->d_h, img->w, img->h);
269  return AVERROR_EXTERNAL;
270  }
271 
272  if ((ret = set_pix_fmt(avctx, img, ctx->has_alpha_channel)) < 0) {
273  av_log(avctx, AV_LOG_ERROR, "Unsupported output colorspace (%d) / bit_depth (%d)\n",
274  img->fmt, img->bit_depth);
275  return ret;
276  }
277 
278  if ((int) img->d_w != avctx->width || (int) img->d_h != avctx->height) {
279  av_log(avctx, AV_LOG_INFO, "dimension change! %dx%d -> %dx%d\n",
280  avctx->width, avctx->height, img->d_w, img->d_h);
281  ret = ff_set_dimensions(avctx, img->d_w, img->d_h);
282  if (ret < 0)
283  return ret;
284  }
285 
286  if (ctx->has_alpha_channel &&
287  (img->d_w != img_alpha->d_w ||
288  img->d_h != img_alpha->d_h ||
289  img->bit_depth != img_alpha->bit_depth)) {
290  av_log(avctx, AV_LOG_ERROR,
291  "Video dimensions %dx%d@%dbpc differ from alpha dimensions %dx%d@%dbpc\n",
292  img->d_w, img->d_h, img->bit_depth,
293  img_alpha->d_w, img_alpha->d_h, img_alpha->bit_depth);
294  return AVERROR_INVALIDDATA;
295  }
296 
297  planes[0] = img->planes[VPX_PLANE_Y];
298  planes[1] = img->planes[VPX_PLANE_U];
299  planes[2] = img->planes[VPX_PLANE_V];
300  planes[3] =
301  ctx->has_alpha_channel ? img_alpha->planes[VPX_PLANE_Y] : NULL;
302  linesizes[0] = img->stride[VPX_PLANE_Y];
303  linesizes[1] = img->stride[VPX_PLANE_U];
304  linesizes[2] = img->stride[VPX_PLANE_V];
305  linesizes[3] =
306  ctx->has_alpha_channel ? img_alpha->stride[VPX_PLANE_Y] : 0;
307 
308  if (img->fb_priv && (!ctx->has_alpha_channel || img_alpha->fb_priv)) {
309  ret = ff_decode_frame_props(avctx, picture);
310  if (ret < 0)
311  return ret;
312  picture->buf[0] = av_buffer_ref(img->fb_priv);
313  if (!picture->buf[0])
314  return AVERROR(ENOMEM);
315  if (ctx->has_alpha_channel) {
316  picture->buf[1] = av_buffer_ref(img_alpha->fb_priv);
317  if (!picture->buf[1]) {
318  av_frame_unref(picture);
319  return AVERROR(ENOMEM);
320  }
321  }
322  for (int i = 0; i < 4; i++) {
323  picture->data[i] = planes[i];
324  picture->linesize[i] = linesizes[i];
325  }
326  } else {
327  if ((ret = ff_get_buffer(avctx, picture, 0)) < 0)
328  return ret;
329  av_image_copy(picture->data, picture->linesize, (const uint8_t**)planes,
330  linesizes, avctx->pix_fmt, img->d_w, img->d_h);
331  }
332  *got_frame = 1;
333  }
334  return avpkt->size;
335 }
336 
337 static av_cold int vpx_free(AVCodecContext *avctx)
338 {
339  VPxContext *ctx = avctx->priv_data;
340  vpx_codec_destroy(&ctx->decoder);
341  if (ctx->has_alpha_channel)
342  vpx_codec_destroy(&ctx->decoder_alpha);
344  return 0;
345 }
346 
347 #if CONFIG_LIBVPX_VP8_DECODER
348 static av_cold int vp8_init(AVCodecContext *avctx)
349 {
350  VPxContext *ctx = avctx->priv_data;
351  return vpx_init(avctx, &ctx->decoder, &vpx_codec_vp8_dx_algo);
352 }
353 
355  .name = "libvpx",
356  .long_name = NULL_IF_CONFIG_SMALL("libvpx VP8"),
357  .type = AVMEDIA_TYPE_VIDEO,
358  .id = AV_CODEC_ID_VP8,
359  .priv_data_size = sizeof(VPxContext),
360  .init = vp8_init,
361  .close = vpx_free,
362  .decode = vpx_decode,
364  .wrapper_name = "libvpx",
365 };
366 #endif /* CONFIG_LIBVPX_VP8_DECODER */
367 
368 #if CONFIG_LIBVPX_VP9_DECODER
369 static av_cold int vp9_init(AVCodecContext *avctx)
370 {
371  VPxContext *ctx = avctx->priv_data;
372  return vpx_init(avctx, &ctx->decoder, &vpx_codec_vp9_dx_algo);
373 }
374 
376  .name = "libvpx-vp9",
377  .long_name = NULL_IF_CONFIG_SMALL("libvpx VP9"),
378  .type = AVMEDIA_TYPE_VIDEO,
379  .id = AV_CODEC_ID_VP9,
380  .priv_data_size = sizeof(VPxContext),
381  .init = vp9_init,
382  .close = vpx_free,
383  .decode = vpx_decode,
384  .capabilities = AV_CODEC_CAP_AUTO_THREADS,
387  .wrapper_name = "libvpx",
388 };
389 #endif /* CONFIG_LIBVPX_VP9_DECODER */
also ITU-R BT1361 / IEC 61966-2-4 xvYCC709 / SMPTE RP177 Annex B
Definition: pixfmt.h:511
#define NULL
Definition: coverity.c:32
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
#define AV_PIX_FMT_YUV440P10
Definition: pixfmt.h:399
void av_buffer_unref(AVBufferRef **buf)
Free a given reference and automatically free the buffer if there are no more references to it...
Definition: buffer.c:125
This structure describes decoded (raw) audio or video data.
Definition: frame.h:300
static int get_frame_buffer(void *priv, size_t min_size, vpx_codec_frame_buffer_t *fb)
Definition: libvpxdec.c:48
int av_cpu_count(void)
Definition: cpu.c:267
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:71
misc image utilities
static av_cold int vpx_free(AVCodecContext *avctx)
Definition: libvpxdec.c:337
#define AV_RB64
Definition: intreadwrite.h:164
int ff_set_dimensions(AVCodecContext *s, int width, int height)
Check that the provided frame dimensions are valid and set them on the codec context.
Definition: utils.c:104
AVBufferRef * buf[AV_NUM_DATA_POINTERS]
AVBuffer references backing the data for this frame.
Definition: frame.h:491
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
also ITU-R BT601-6 625 / ITU-R BT1358 625 / ITU-R BT1700 625 PAL & SECAM / IEC 61966-2-4 xvYCC601 ...
Definition: pixfmt.h:515
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition: avcodec.h:1161
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:168
int size
Definition: packet.h:356
#define AV_PIX_FMT_GBRP10
Definition: pixfmt.h:413
AVCodec ff_libvpx_vp8_decoder
also ITU-R BT601-6 525 / ITU-R BT1358 525 / ITU-R BT1700 NTSC
Definition: pixfmt.h:516
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:736
#define AV_PIX_FMT_YUV420P12
Definition: pixfmt.h:401
int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
Set various frame properties from the codec context / packet data.
Definition: decode.c:1685
static void error(const char *err)
#define AV_CODEC_CAP_AUTO_THREADS
Codec supports avctx->thread_count == 0 (auto).
Definition: codec.h:118
int profile
profile
Definition: avcodec.h:1859
AVCodec.
Definition: codec.h:190
order of coefficients is actually GBR, also IEC 61966-2-1 (sRGB)
Definition: pixfmt.h:510
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:71
functionally identical to above
Definition: pixfmt.h:517
static av_cold int vpx_init(AVCodecContext *avctx, struct vpx_codec_ctx *decoder, const struct vpx_codec_iface *iface)
Definition: libvpxdec.c:82
#define FF_PROFILE_VP9_0
Definition: avcodec.h:1942
#define img
#define CONFIG_LIBVPX_VP8_DECODER
Definition: config.h:1244
int has_alpha_channel
Definition: libvpxdec.c:44
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:101
uint8_t
#define av_cold
Definition: attributes.h:88
AVColorSpace
YUV colorspace type.
Definition: pixfmt.h:509
const char data[16]
Definition: mxf.c:91
uint8_t * data
Definition: packet.h:355
#define AV_LOG_VERBOSE
Detailed information.
Definition: log.h:192
AVColorRange
MPEG vs JPEG YUV range.
Definition: pixfmt.h:532
#define AV_PIX_FMT_YUV422P12
Definition: pixfmt.h:402
#define av_log(a,...)
static int vpx_decode(AVCodecContext *avctx, void *data, int *got_frame, AVPacket *avpkt)
Definition: libvpxdec.c:213
The buffer pool.
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
AVCodec ff_libvpx_vp9_decoder
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
#define AVERROR(e)
Definition: error.h:43
uint8_t * av_packet_get_side_data(const AVPacket *pkt, enum AVPacketSideDataType type, int *size)
Get side information from packet.
Definition: avpacket.c:353
#define FF_PROFILE_VP9_3
Definition: avcodec.h:1945
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:188
const char * name
Name of the codec implementation.
Definition: codec.h:197
#define AV_PIX_FMT_YUV444P10
Definition: pixfmt.h:400
void av_image_copy(uint8_t *dst_data[4], int dst_linesizes[4], const uint8_t *src_data[4], const int src_linesizes[4], enum AVPixelFormat pix_fmt, int width, int height)
Copy image in src_data to dst_data.
Definition: imgutils.c:387
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:70
#define FF_PROFILE_VP9_2
Definition: avcodec.h:1944
struct vpx_codec_ctx decoder
Definition: libvpxdec.c:40
struct vpx_codec_ctx decoder_alpha
Definition: libvpxdec.c:41
static const struct @315 planes[]
AVBufferPool * pool
Definition: libvpxdec.c:42
#define FFMIN(a, b)
Definition: common.h:96
#define fb(width, name)
Definition: cbs_av1.c:564
static const chunk_decoder decoder[8]
Definition: dfa.c:330
int width
picture width / height.
Definition: avcodec.h:699
static av_cold void init_static_data(void)
Definition: mv30.c:665
ITU-R BT2020 non-constant luminance system.
Definition: pixfmt.h:520
AVFormatContext * ctx
Definition: movenc.c:48
size_t pool_size
Definition: libvpxdec.c:43
#define CONFIG_LIBVPX_VP9_DECODER
Definition: config.h:1245
int thread_count
thread count is used to decide how many independent tasks should be passed to execute() ...
Definition: avcodec.h:1785
the normal 2^n-1 "JPEG" YUV ranges
Definition: pixfmt.h:535
#define FF_PROFILE_VP9_1
Definition: avcodec.h:1943
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
Libavcodec external API header.
enum AVCodecID codec_id
Definition: avcodec.h:536
av_cold void ff_vp9_init_static(AVCodec *codec)
Definition: libvpx.c:68
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:331
static av_cold int vp9_init(AVFormatContext *ctx, int st_index, PayloadContext *data)
Definition: rtpdec_vp9.c:34
static int set_pix_fmt(AVCodecContext *avctx, struct vpx_image *img, int has_alpha_channel)
Definition: libvpxdec.c:107
main external API structure.
Definition: avcodec.h:526
uint8_t * data
The data buffer.
Definition: buffer.h:89
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: decode.c:1854
Data found in BlockAdditional element of matroska container.
Definition: packet.h:191
AVBufferRef * av_buffer_allocz(int size)
Same as av_buffer_alloc(), except the returned buffer will be initialized to zero.
Definition: buffer.c:83
#define AV_PIX_FMT_YUV420P10
Definition: pixfmt.h:397
static const AVProfile profiles[]
void av_buffer_pool_uninit(AVBufferPool **ppool)
Mark the pool as being available for freeing.
Definition: buffer.c:282
enum AVColorSpace colorspace
YUV colorspace type.
Definition: avcodec.h:1154
#define AV_PIX_FMT_YUV440P12
Definition: pixfmt.h:403
int size
Size of data in bytes.
Definition: buffer.h:93
#define AV_PIX_FMT_GBRP12
Definition: pixfmt.h:414
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
Definition: frame.c:554
#define AV_PIX_FMT_YUV422P10
Definition: pixfmt.h:398
#define AV_PIX_FMT_YUV444P12
Definition: pixfmt.h:404
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:314
the normal 219*2^(n-8) "MPEG" YUV ranges
Definition: pixfmt.h:534
A reference to a data buffer.
Definition: buffer.h:81
static av_cold int vp8_init(AVFormatContext *s, int st_index, PayloadContext *vp8)
Definition: rtpdec_vp8.c:263
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:66
static int decode_frame(AVCodecContext *avctx, vpx_codec_ctx_t *decoder, uint8_t *data, uint32_t data_sz)
Definition: libvpxdec.c:196
common internal api header.
static int release_frame_buffer(void *priv, vpx_codec_frame_buffer_t *fb)
Definition: libvpxdec.c:75
common internal and external API header
AVBufferPool * av_buffer_pool_init(int size, AVBufferRef *(*alloc)(int size))
Allocate and initialize a buffer pool.
Definition: buffer.c:242
AVBufferRef * av_buffer_ref(AVBufferRef *buf)
Create a new reference to an AVBuffer.
Definition: buffer.c:93
void * priv_data
Definition: avcodec.h:553
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:99
AVBufferRef * av_buffer_pool_get(AVBufferPool *pool)
Allocate a new AVBuffer, reusing an old buffer from the pool when available.
Definition: buffer.c:343
const AVProfile ff_vp9_profiles[]
Definition: profiles.c:133
#define AVERROR_EXTERNAL
Generic error in an external library.
Definition: error.h:57
This structure stores compressed data.
Definition: packet.h:332
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:50