Libav
utils.c
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1 /*
2  * utils for libavcodec
3  * Copyright (c) 2001 Fabrice Bellard
4  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
5  *
6  * This file is part of Libav.
7  *
8  * Libav is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * Libav is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with Libav; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
28 #include "config.h"
29 #include "libavutil/attributes.h"
30 #include "libavutil/avassert.h"
31 #include "libavutil/avstring.h"
33 #include "libavutil/crc.h"
34 #include "libavutil/frame.h"
35 #include "libavutil/internal.h"
36 #include "libavutil/mathematics.h"
37 #include "libavutil/pixdesc.h"
38 #include "libavutil/imgutils.h"
39 #include "libavutil/samplefmt.h"
40 #include "libavutil/dict.h"
41 #include "avcodec.h"
42 #include "libavutil/opt.h"
43 #include "me_cmp.h"
44 #include "mpegvideo.h"
45 #include "thread.h"
46 #include "internal.h"
47 #include "bytestream.h"
48 #include "version.h"
49 #include <stdlib.h>
50 #include <stdarg.h>
51 #include <limits.h>
52 #include <float.h>
53 
54 static int volatile entangled_thread_counter = 0;
55 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op);
56 static void *codec_mutex;
57 static void *avformat_mutex;
58 
59 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
60 {
61  void **p = ptr;
62  if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
63  av_freep(p);
64  *size = 0;
65  return;
66  }
67  av_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE);
68  if (*size)
69  memset((uint8_t *)*p + min_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
70 }
71 
72 /* encoder management */
74 
76 {
77  if (c)
78  return c->next;
79  else
80  return first_avcodec;
81 }
82 
83 static av_cold void avcodec_init(void)
84 {
85  static int initialized = 0;
86 
87  if (initialized != 0)
88  return;
89  initialized = 1;
90 
91  if (CONFIG_ME_CMP)
93 }
94 
95 int av_codec_is_encoder(const AVCodec *codec)
96 {
97  return codec && (codec->encode_sub || codec->encode2);
98 }
99 
100 int av_codec_is_decoder(const AVCodec *codec)
101 {
102  return codec && codec->decode;
103 }
104 
106 {
107  AVCodec **p;
108  avcodec_init();
109  p = &first_avcodec;
110  while (*p)
111  p = &(*p)->next;
112  *p = codec;
113  codec->next = NULL;
114 
115  if (codec->init_static_data)
116  codec->init_static_data(codec);
117 }
118 
119 #if FF_API_EMU_EDGE
121 {
122  return EDGE_WIDTH;
123 }
124 #endif
125 
126 #if FF_API_SET_DIMENSIONS
128 {
129  ff_set_dimensions(s, width, height);
130 }
131 #endif
132 
134 {
135  int ret = av_image_check_size(width, height, 0, s);
136 
137  if (ret < 0)
138  width = height = 0;
139  s->width = s->coded_width = width;
140  s->height = s->coded_height = height;
141 
142  return ret;
143 }
144 
146 {
147  int ret = av_image_check_sar(avctx->width, avctx->height, sar);
148 
149  if (ret < 0) {
150  av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
151  sar.num, sar.den);
152  avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
153  return ret;
154  } else {
155  avctx->sample_aspect_ratio = sar;
156  }
157  return 0;
158 }
159 
161  enum AVMatrixEncoding matrix_encoding)
162 {
163  AVFrameSideData *side_data;
164  enum AVMatrixEncoding *data;
165 
167  if (!side_data)
169  sizeof(enum AVMatrixEncoding));
170 
171  if (!side_data)
172  return AVERROR(ENOMEM);
173 
174  data = (enum AVMatrixEncoding*)side_data->data;
175  *data = matrix_encoding;
176 
177  return 0;
178 }
179 
180 #if HAVE_SIMD_ALIGN_16
181 # define STRIDE_ALIGN 16
182 #else
183 # define STRIDE_ALIGN 8
184 #endif
185 
187  int linesize_align[AV_NUM_DATA_POINTERS])
188 {
189  int i;
190  int w_align = 1;
191  int h_align = 1;
192 
193  switch (s->pix_fmt) {
194  case AV_PIX_FMT_YUV420P:
195  case AV_PIX_FMT_YUYV422:
196  case AV_PIX_FMT_YVYU422:
197  case AV_PIX_FMT_UYVY422:
198  case AV_PIX_FMT_YUV422P:
199  case AV_PIX_FMT_YUV440P:
200  case AV_PIX_FMT_YUV444P:
201  case AV_PIX_FMT_GBRP:
202  case AV_PIX_FMT_GRAY8:
203  case AV_PIX_FMT_GRAY16BE:
204  case AV_PIX_FMT_GRAY16LE:
205  case AV_PIX_FMT_YUVJ420P:
206  case AV_PIX_FMT_YUVJ422P:
207  case AV_PIX_FMT_YUVJ440P:
208  case AV_PIX_FMT_YUVJ444P:
209  case AV_PIX_FMT_YUVA420P:
210  case AV_PIX_FMT_YUVA422P:
211  case AV_PIX_FMT_YUVA444P:
228  case AV_PIX_FMT_GBRP9LE:
229  case AV_PIX_FMT_GBRP9BE:
230  case AV_PIX_FMT_GBRP10LE:
231  case AV_PIX_FMT_GBRP10BE:
232  w_align = 16; //FIXME assume 16 pixel per macroblock
233  h_align = 16 * 2; // interlaced needs 2 macroblocks height
234  break;
235  case AV_PIX_FMT_YUV411P:
237  w_align = 32;
238  h_align = 8;
239  break;
240  case AV_PIX_FMT_YUV410P:
241  if (s->codec_id == AV_CODEC_ID_SVQ1) {
242  w_align = 64;
243  h_align = 64;
244  }
245  case AV_PIX_FMT_RGB555:
246  if (s->codec_id == AV_CODEC_ID_RPZA) {
247  w_align = 4;
248  h_align = 4;
249  }
250  case AV_PIX_FMT_PAL8:
251  case AV_PIX_FMT_BGR8:
252  case AV_PIX_FMT_RGB8:
253  if (s->codec_id == AV_CODEC_ID_SMC) {
254  w_align = 4;
255  h_align = 4;
256  }
257  break;
258  case AV_PIX_FMT_BGR24:
259  if ((s->codec_id == AV_CODEC_ID_MSZH) ||
260  (s->codec_id == AV_CODEC_ID_ZLIB)) {
261  w_align = 4;
262  h_align = 4;
263  }
264  break;
265  default:
266  w_align = 1;
267  h_align = 1;
268  break;
269  }
270 
271  *width = FFALIGN(*width, w_align);
272  *height = FFALIGN(*height, h_align);
273  if (s->codec_id == AV_CODEC_ID_H264)
274  // some of the optimized chroma MC reads one line too much
275  *height += 2;
276 
277  for (i = 0; i < 4; i++)
278  linesize_align[i] = STRIDE_ALIGN;
279 }
280 
282 {
284  int chroma_shift = desc->log2_chroma_w;
285  int linesize_align[AV_NUM_DATA_POINTERS];
286  int align;
287 
288  avcodec_align_dimensions2(s, width, height, linesize_align);
289  align = FFMAX(linesize_align[0], linesize_align[3]);
290  linesize_align[1] <<= chroma_shift;
291  linesize_align[2] <<= chroma_shift;
292  align = FFMAX3(align, linesize_align[1], linesize_align[2]);
293  *width = FFALIGN(*width, align);
294 }
295 
297  enum AVSampleFormat sample_fmt, const uint8_t *buf,
298  int buf_size, int align)
299 {
300  int ch, planar, needed_size, ret = 0;
301 
302  needed_size = av_samples_get_buffer_size(NULL, nb_channels,
303  frame->nb_samples, sample_fmt,
304  align);
305  if (buf_size < needed_size)
306  return AVERROR(EINVAL);
307 
308  planar = av_sample_fmt_is_planar(sample_fmt);
309  if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
310  if (!(frame->extended_data = av_mallocz(nb_channels *
311  sizeof(*frame->extended_data))))
312  return AVERROR(ENOMEM);
313  } else {
314  frame->extended_data = frame->data;
315  }
316 
317  if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
318  buf, nb_channels, frame->nb_samples,
319  sample_fmt, align)) < 0) {
320  if (frame->extended_data != frame->data)
321  av_free(frame->extended_data);
322  return ret;
323  }
324  if (frame->extended_data != frame->data) {
325  for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
326  frame->data[ch] = frame->extended_data[ch];
327  }
328 
329  return ret;
330 }
331 
332 static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
333 {
334  FramePool *pool = avctx->internal->pool;
335  int i, ret;
336 
337  switch (avctx->codec_type) {
338  case AVMEDIA_TYPE_VIDEO: {
339  AVPicture picture;
340  int size[4] = { 0 };
341  int w = frame->width;
342  int h = frame->height;
343  int tmpsize, unaligned;
344 
345  if (pool->format == frame->format &&
346  pool->width == frame->width && pool->height == frame->height)
347  return 0;
348 
349  avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
350 
351  do {
352  // NOTE: do not align linesizes individually, this breaks e.g. assumptions
353  // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
354  av_image_fill_linesizes(picture.linesize, avctx->pix_fmt, w);
355  // increase alignment of w for next try (rhs gives the lowest bit set in w)
356  w += w & ~(w - 1);
357 
358  unaligned = 0;
359  for (i = 0; i < 4; i++)
360  unaligned |= picture.linesize[i] % pool->stride_align[i];
361  } while (unaligned);
362 
363  tmpsize = av_image_fill_pointers(picture.data, avctx->pix_fmt, h,
364  NULL, picture.linesize);
365  if (tmpsize < 0)
366  return -1;
367 
368  for (i = 0; i < 3 && picture.data[i + 1]; i++)
369  size[i] = picture.data[i + 1] - picture.data[i];
370  size[i] = tmpsize - (picture.data[i] - picture.data[0]);
371 
372  for (i = 0; i < 4; i++) {
373  av_buffer_pool_uninit(&pool->pools[i]);
374  pool->linesize[i] = picture.linesize[i];
375  if (size[i]) {
376  pool->pools[i] = av_buffer_pool_init(size[i] + 16, NULL);
377  if (!pool->pools[i]) {
378  ret = AVERROR(ENOMEM);
379  goto fail;
380  }
381  }
382  }
383  pool->format = frame->format;
384  pool->width = frame->width;
385  pool->height = frame->height;
386 
387  break;
388  }
389  case AVMEDIA_TYPE_AUDIO: {
391  int planar = av_sample_fmt_is_planar(frame->format);
392  int planes = planar ? ch : 1;
393 
394  if (pool->format == frame->format && pool->planes == planes &&
395  pool->channels == ch && frame->nb_samples == pool->samples)
396  return 0;
397 
398  av_buffer_pool_uninit(&pool->pools[0]);
399  ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
400  frame->nb_samples, frame->format, 0);
401  if (ret < 0)
402  goto fail;
403 
404  pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
405  if (!pool->pools[0]) {
406  ret = AVERROR(ENOMEM);
407  goto fail;
408  }
409 
410  pool->format = frame->format;
411  pool->planes = planes;
412  pool->channels = ch;
413  pool->samples = frame->nb_samples;
414  break;
415  }
416  default: av_assert0(0);
417  }
418  return 0;
419 fail:
420  for (i = 0; i < 4; i++)
421  av_buffer_pool_uninit(&pool->pools[i]);
422  pool->format = -1;
423  pool->planes = pool->channels = pool->samples = 0;
424  pool->width = pool->height = 0;
425  return ret;
426 }
427 
428 static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
429 {
430  FramePool *pool = avctx->internal->pool;
431  int planes = pool->planes;
432  int i;
433 
434  frame->linesize[0] = pool->linesize[0];
435 
436  if (planes > AV_NUM_DATA_POINTERS) {
437  frame->extended_data = av_mallocz(planes * sizeof(*frame->extended_data));
438  frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
439  frame->extended_buf = av_mallocz(frame->nb_extended_buf *
440  sizeof(*frame->extended_buf));
441  if (!frame->extended_data || !frame->extended_buf) {
442  av_freep(&frame->extended_data);
443  av_freep(&frame->extended_buf);
444  return AVERROR(ENOMEM);
445  }
446  } else
447  frame->extended_data = frame->data;
448 
449  for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
450  frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
451  if (!frame->buf[i])
452  goto fail;
453  frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
454  }
455  for (i = 0; i < frame->nb_extended_buf; i++) {
456  frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
457  if (!frame->extended_buf[i])
458  goto fail;
459  frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
460  }
461 
462  if (avctx->debug & FF_DEBUG_BUFFERS)
463  av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
464 
465  return 0;
466 fail:
467  av_frame_unref(frame);
468  return AVERROR(ENOMEM);
469 }
470 
472 {
473  FramePool *pool = s->internal->pool;
474  int i;
475 
476  if (pic->data[0]) {
477  av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
478  return -1;
479  }
480 
481  memset(pic->data, 0, sizeof(pic->data));
482  pic->extended_data = pic->data;
483 
484  for (i = 0; i < 4 && pool->pools[i]; i++) {
485  pic->linesize[i] = pool->linesize[i];
486 
487  pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
488  if (!pic->buf[i])
489  goto fail;
490 
491  pic->data[i] = pic->buf[i]->data;
492  }
493  for (; i < AV_NUM_DATA_POINTERS; i++) {
494  pic->data[i] = NULL;
495  pic->linesize[i] = 0;
496  }
497  if (pic->data[1] && !pic->data[2])
498  avpriv_set_systematic_pal2((uint32_t *)pic->data[1], s->pix_fmt);
499 
500  if (s->debug & FF_DEBUG_BUFFERS)
501  av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
502 
503  return 0;
504 fail:
505  av_frame_unref(pic);
506  return AVERROR(ENOMEM);
507 }
508 
510 {
511  int ret;
512 
513  if ((ret = update_frame_pool(avctx, frame)) < 0)
514  return ret;
515 
516 #if FF_API_GET_BUFFER
518  frame->type = FF_BUFFER_TYPE_INTERNAL;
520 #endif
521 
522  switch (avctx->codec_type) {
523  case AVMEDIA_TYPE_VIDEO:
524  return video_get_buffer(avctx, frame);
525  case AVMEDIA_TYPE_AUDIO:
526  return audio_get_buffer(avctx, frame);
527  default:
528  return -1;
529  }
530 }
531 
532 #if FF_API_GET_BUFFER
535 {
536  return avcodec_default_get_buffer2(avctx, frame, 0);
537 }
538 
539 typedef struct CompatReleaseBufPriv {
543 
544 static void compat_free_buffer(void *opaque, uint8_t *data)
545 {
546  CompatReleaseBufPriv *priv = opaque;
547  if (priv->avctx.release_buffer)
548  priv->avctx.release_buffer(&priv->avctx, &priv->frame);
549  av_freep(&priv);
550 }
551 
552 static void compat_release_buffer(void *opaque, uint8_t *data)
553 {
554  AVBufferRef *buf = opaque;
555  av_buffer_unref(&buf);
556 }
558 #endif
559 
561 {
562  AVPacket *pkt = avctx->internal->pkt;
563  uint8_t *packet_sd;
564  int size;
565  AVFrameSideData *frame_sd;
566 
567  frame->color_primaries = avctx->color_primaries;
568  frame->color_trc = avctx->color_trc;
569  frame->colorspace = avctx->colorspace;
570  frame->color_range = avctx->color_range;
571  frame->chroma_location = avctx->chroma_sample_location;
572 
573  frame->reordered_opaque = avctx->reordered_opaque;
574  if (!pkt) {
575  frame->pkt_pts = AV_NOPTS_VALUE;
576  return 0;
577  }
578 
579  frame->pkt_pts = pkt->pts;
580 
581  /* copy the replaygain data to the output frame */
582  packet_sd = av_packet_get_side_data(pkt, AV_PKT_DATA_REPLAYGAIN, &size);
583  if (packet_sd) {
584  frame_sd = av_frame_new_side_data(frame, AV_FRAME_DATA_REPLAYGAIN, size);
585  if (!frame_sd)
586  return AVERROR(ENOMEM);
587 
588  memcpy(frame_sd->data, packet_sd, size);
589  }
590  /* copy the displaymatrix to the output frame */
591  packet_sd = av_packet_get_side_data(pkt, AV_PKT_DATA_DISPLAYMATRIX, &size);
592  if (packet_sd) {
593  frame_sd = av_frame_new_side_data(frame, AV_FRAME_DATA_DISPLAYMATRIX, size);
594  if (!frame_sd)
595  return AVERROR(ENOMEM);
596 
597  memcpy(frame_sd->data, packet_sd, size);
598  }
599  /* copy the stereo3d format to the output frame */
600  packet_sd = av_packet_get_side_data(pkt, AV_PKT_DATA_STEREO3D, &size);
601  if (packet_sd) {
602  frame_sd = av_frame_new_side_data(frame, AV_FRAME_DATA_STEREO3D, size);
603  if (!frame_sd)
604  return AVERROR(ENOMEM);
605 
606  memcpy(frame_sd->data, packet_sd, size);
607  }
608 
609  return 0;
610 }
611 
612 int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
613 {
614  const AVHWAccel *hwaccel = avctx->hwaccel;
615  int override_dimensions = 1;
616  int ret;
617 
618  switch (avctx->codec_type) {
619  case AVMEDIA_TYPE_VIDEO:
620  if (av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0) {
621  frame->width = frame->height = 0;
622  return AVERROR(EINVAL);
623  }
624  if (frame->width <= 0 || frame->height <= 0) {
625  frame->width = FFMAX(avctx->width, avctx->coded_width);
626  frame->height = FFMAX(avctx->height, avctx->coded_height);
627  override_dimensions = 0;
628  }
629  if (frame->format < 0)
630  frame->format = avctx->pix_fmt;
631  if (!frame->sample_aspect_ratio.num)
633 
634  if (av_image_check_sar(frame->width, frame->height,
635  frame->sample_aspect_ratio) < 0) {
636  av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
637  frame->sample_aspect_ratio.num,
638  frame->sample_aspect_ratio.den);
639  frame->sample_aspect_ratio = (AVRational){ 0, 1 };
640  }
641  break;
642  case AVMEDIA_TYPE_AUDIO:
643  if (!frame->sample_rate)
644  frame->sample_rate = avctx->sample_rate;
645  if (frame->format < 0)
646  frame->format = avctx->sample_fmt;
647  if (!frame->channel_layout) {
648  if (avctx->channel_layout) {
650  avctx->channels) {
651  av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
652  "configuration.\n");
653  return AVERROR(EINVAL);
654  }
655 
656  frame->channel_layout = avctx->channel_layout;
657  } else {
658  if (avctx->channels > FF_SANE_NB_CHANNELS) {
659  av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
660  avctx->channels);
661  return AVERROR(ENOSYS);
662  }
663 
665  if (!frame->channel_layout)
666  frame->channel_layout = (1ULL << avctx->channels) - 1;
667  }
668  }
669  break;
670  default: return AVERROR(EINVAL);
671  }
672 
673  ret = ff_decode_frame_props(avctx, frame);
674  if (ret < 0) {
675  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO)
676  frame->width = frame->height = 0;
677  return ret;
678  }
679 
680  if (hwaccel && hwaccel->alloc_frame) {
681  ret = hwaccel->alloc_frame(avctx, frame);
682  goto end;
683  }
684 
685 #if FF_API_GET_BUFFER
687  /*
688  * Wrap an old get_buffer()-allocated buffer in an bunch of AVBuffers.
689  * We wrap each plane in its own AVBuffer. Each of those has a reference to
690  * a dummy AVBuffer as its private data, unreffing it on free.
691  * When all the planes are freed, the dummy buffer's free callback calls
692  * release_buffer().
693  */
694  if (avctx->get_buffer) {
695  CompatReleaseBufPriv *priv = NULL;
696  AVBufferRef *dummy_buf = NULL;
697  int planes, i, ret;
698 
699  if (flags & AV_GET_BUFFER_FLAG_REF)
700  frame->reference = 1;
701 
702  ret = avctx->get_buffer(avctx, frame);
703  if (ret < 0) {
704  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO)
705  frame->width = frame->height = 0;
706  return ret;
707  }
708 
709  /* return if the buffers are already set up
710  * this would happen e.g. when a custom get_buffer() calls
711  * avcodec_default_get_buffer
712  */
713  if (frame->buf[0])
714  return 0;
715 
716  priv = av_mallocz(sizeof(*priv));
717  if (!priv) {
718  ret = AVERROR(ENOMEM);
719  goto fail;
720  }
721  priv->avctx = *avctx;
722  priv->frame = *frame;
723 
724  dummy_buf = av_buffer_create(NULL, 0, compat_free_buffer, priv, 0);
725  if (!dummy_buf) {
726  ret = AVERROR(ENOMEM);
727  goto fail;
728  }
729 
730 #define WRAP_PLANE(ref_out, data, data_size) \
731 do { \
732  AVBufferRef *dummy_ref = av_buffer_ref(dummy_buf); \
733  if (!dummy_ref) { \
734  ret = AVERROR(ENOMEM); \
735  goto fail; \
736  } \
737  ref_out = av_buffer_create(data, data_size, compat_release_buffer, \
738  dummy_ref, 0); \
739  if (!ref_out) { \
740  av_frame_unref(frame); \
741  ret = AVERROR(ENOMEM); \
742  goto fail; \
743  } \
744 } while (0)
745 
746  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
747  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
748 
749  planes = av_pix_fmt_count_planes(frame->format);
750  /* workaround for AVHWAccel plane count of 0, buf[0] is used as
751  check for allocated buffers: make libavcodec happy */
752  if (desc && desc->flags & AV_PIX_FMT_FLAG_HWACCEL)
753  planes = 1;
754  if (!desc || planes <= 0) {
755  ret = AVERROR(EINVAL);
756  goto fail;
757  }
758 
759  for (i = 0; i < planes; i++) {
760  int v_shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
761  int plane_size = (frame->height >> v_shift) * frame->linesize[i];
762 
763  WRAP_PLANE(frame->buf[i], frame->data[i], plane_size);
764  }
765  } else {
766  int planar = av_sample_fmt_is_planar(frame->format);
767  planes = planar ? avctx->channels : 1;
768 
769  if (planes > FF_ARRAY_ELEMS(frame->buf)) {
770  frame->nb_extended_buf = planes - FF_ARRAY_ELEMS(frame->buf);
771  frame->extended_buf = av_malloc(sizeof(*frame->extended_buf) *
772  frame->nb_extended_buf);
773  if (!frame->extended_buf) {
774  ret = AVERROR(ENOMEM);
775  goto fail;
776  }
777  }
778 
779  for (i = 0; i < FFMIN(planes, FF_ARRAY_ELEMS(frame->buf)); i++)
780  WRAP_PLANE(frame->buf[i], frame->extended_data[i], frame->linesize[0]);
781 
782  for (i = 0; i < frame->nb_extended_buf; i++)
783  WRAP_PLANE(frame->extended_buf[i],
784  frame->extended_data[i + FF_ARRAY_ELEMS(frame->buf)],
785  frame->linesize[0]);
786  }
787 
788  av_buffer_unref(&dummy_buf);
789 
790  frame->width = avctx->width;
791  frame->height = avctx->height;
792 
793  return 0;
794 
795 fail:
796  avctx->release_buffer(avctx, frame);
797  av_freep(&priv);
798  av_buffer_unref(&dummy_buf);
799  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO)
800  frame->width = frame->height = 0;
801  return ret;
802  }
804 #endif
805 
806  ret = avctx->get_buffer2(avctx, frame, flags);
807 
808 end:
809  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions) {
810  frame->width = avctx->width;
811  frame->height = avctx->height;
812  }
813 
814  if ((ret < 0) && (avctx->codec_type == AVMEDIA_TYPE_VIDEO))
815  frame->width = frame->height = 0;
816 
817  return ret;
818 }
819 
821 {
822  AVFrame *tmp;
823  int ret;
824 
826 
827  if (!frame->data[0])
828  return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
829 
830  if (av_frame_is_writable(frame))
831  return ff_decode_frame_props(avctx, frame);
832 
833  tmp = av_frame_alloc();
834  if (!tmp)
835  return AVERROR(ENOMEM);
836 
837  av_frame_move_ref(tmp, frame);
838 
839  ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
840  if (ret < 0) {
841  av_frame_free(&tmp);
842  return ret;
843  }
844 
845  av_frame_copy(frame, tmp);
846  av_frame_free(&tmp);
847 
848  return 0;
849 }
850 
851 #if FF_API_GET_BUFFER
853 {
854  av_frame_unref(pic);
855 }
856 
858 {
859  av_assert0(0);
860  return AVERROR_BUG;
861 }
862 #endif
863 
864 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
865 {
866  int i;
867 
868  for (i = 0; i < count; i++) {
869  int r = func(c, (char *)arg + i * size);
870  if (ret)
871  ret[i] = r;
872  }
873  return 0;
874 }
875 
876 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
877 {
878  int i;
879 
880  for (i = 0; i < count; i++) {
881  int r = func(c, arg, i, 0);
882  if (ret)
883  ret[i] = r;
884  }
885  return 0;
886 }
887 
889 {
890  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
891  return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
892 }
893 
895 {
896  while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
897  ++fmt;
898  return fmt[0];
899 }
900 
902  enum AVPixelFormat pix_fmt)
903 {
904  AVHWAccel *hwaccel = NULL;
905 
906  while ((hwaccel = av_hwaccel_next(hwaccel)))
907  if (hwaccel->id == codec_id
908  && hwaccel->pix_fmt == pix_fmt)
909  return hwaccel;
910  return NULL;
911 }
912 
913 
914 int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
915 {
916  const AVPixFmtDescriptor *desc;
917  enum AVPixelFormat ret = avctx->get_format(avctx, fmt);
918 
919  desc = av_pix_fmt_desc_get(ret);
920  if (!desc)
921  return AV_PIX_FMT_NONE;
922 
923  if (avctx->hwaccel && avctx->hwaccel->uninit)
924  avctx->hwaccel->uninit(avctx);
926  avctx->hwaccel = NULL;
927 
928  if (desc->flags & AV_PIX_FMT_FLAG_HWACCEL) {
929  AVHWAccel *hwaccel;
930  int err;
931 
932  hwaccel = find_hwaccel(avctx->codec_id, ret);
933  if (!hwaccel) {
934  av_log(avctx, AV_LOG_ERROR,
935  "Could not find an AVHWAccel for the pixel format: %s",
936  desc->name);
937  return AV_PIX_FMT_NONE;
938  }
939 
940  if (hwaccel->priv_data_size) {
942  if (!avctx->internal->hwaccel_priv_data)
943  return AV_PIX_FMT_NONE;
944  }
945 
946  if (hwaccel->init) {
947  err = hwaccel->init(avctx);
948  if (err < 0) {
950  return AV_PIX_FMT_NONE;
951  }
952  }
953  avctx->hwaccel = hwaccel;
954  }
955 
956  return ret;
957 }
958 
959 #if FF_API_AVFRAME_LAVC
960 void avcodec_get_frame_defaults(AVFrame *frame)
961 {
962  if (frame->extended_data != frame->data)
963  av_freep(&frame->extended_data);
964 
965  memset(frame, 0, sizeof(AVFrame));
966 
967  frame->pts = AV_NOPTS_VALUE;
968  frame->key_frame = 1;
969  frame->sample_aspect_ratio = (AVRational) {0, 1 };
970  frame->format = -1; /* unknown */
971  frame->extended_data = frame->data;
972 }
973 
974 AVFrame *avcodec_alloc_frame(void)
975 {
976  AVFrame *frame = av_mallocz(sizeof(AVFrame));
977 
978  if (!frame)
979  return NULL;
980 
982  avcodec_get_frame_defaults(frame);
984 
985  return frame;
986 }
987 
988 void avcodec_free_frame(AVFrame **frame)
989 {
990  av_frame_free(frame);
991 }
992 #endif
993 
995 {
996  int ret = 0;
997  AVDictionary *tmp = NULL;
998 
999  if (avcodec_is_open(avctx))
1000  return 0;
1001 
1002  if ((!codec && !avctx->codec)) {
1003  av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2().\n");
1004  return AVERROR(EINVAL);
1005  }
1006  if ((codec && avctx->codec && codec != avctx->codec)) {
1007  av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
1008  "but %s passed to avcodec_open2().\n", avctx->codec->name, codec->name);
1009  return AVERROR(EINVAL);
1010  }
1011  if (!codec)
1012  codec = avctx->codec;
1013 
1014  if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
1015  return AVERROR(EINVAL);
1016 
1017  if (options)
1018  av_dict_copy(&tmp, *options, 0);
1019 
1020  /* If there is a user-supplied mutex locking routine, call it. */
1021  if (lockmgr_cb) {
1023  return -1;
1024  }
1025 
1027  if (entangled_thread_counter != 1) {
1028  av_log(avctx, AV_LOG_ERROR, "insufficient thread locking around avcodec_open/close()\n");
1029  ret = -1;
1030  goto end;
1031  }
1032 
1033  avctx->internal = av_mallocz(sizeof(AVCodecInternal));
1034  if (!avctx->internal) {
1035  ret = AVERROR(ENOMEM);
1036  goto end;
1037  }
1038 
1039  avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
1040  if (!avctx->internal->pool) {
1041  ret = AVERROR(ENOMEM);
1042  goto free_and_end;
1043  }
1044 
1045  avctx->internal->to_free = av_frame_alloc();
1046  if (!avctx->internal->to_free) {
1047  ret = AVERROR(ENOMEM);
1048  goto free_and_end;
1049  }
1050 
1051  if (codec->priv_data_size > 0) {
1052  if (!avctx->priv_data) {
1053  avctx->priv_data = av_mallocz(codec->priv_data_size);
1054  if (!avctx->priv_data) {
1055  ret = AVERROR(ENOMEM);
1056  goto end;
1057  }
1058  if (codec->priv_class) {
1059  *(const AVClass **)avctx->priv_data = codec->priv_class;
1061  }
1062  }
1063  if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
1064  goto free_and_end;
1065  } else {
1066  avctx->priv_data = NULL;
1067  }
1068  if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
1069  goto free_and_end;
1070 
1071  if (avctx->coded_width && avctx->coded_height && !avctx->width && !avctx->height)
1072  ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
1073  else if (avctx->width && avctx->height)
1074  ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
1075  if (ret < 0)
1076  goto free_and_end;
1077 
1078  if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
1079  && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
1080  || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
1081  av_log(avctx, AV_LOG_WARNING, "ignoring invalid width/height values\n");
1082  ff_set_dimensions(avctx, 0, 0);
1083  }
1084 
1085  if (avctx->width > 0 && avctx->height > 0) {
1086  if (av_image_check_sar(avctx->width, avctx->height,
1087  avctx->sample_aspect_ratio) < 0) {
1088  av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
1089  avctx->sample_aspect_ratio.num,
1090  avctx->sample_aspect_ratio.den);
1091  avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
1092  }
1093  }
1094 
1095  /* if the decoder init function was already called previously,
1096  * free the already allocated subtitle_header before overwriting it */
1097  if (av_codec_is_decoder(codec))
1098  av_freep(&avctx->subtitle_header);
1099 
1100  if (avctx->channels > FF_SANE_NB_CHANNELS) {
1101  ret = AVERROR(EINVAL);
1102  goto free_and_end;
1103  }
1104 
1105  avctx->codec = codec;
1106  if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
1107  avctx->codec_id == AV_CODEC_ID_NONE) {
1108  avctx->codec_type = codec->type;
1109  avctx->codec_id = codec->id;
1110  }
1111  if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
1112  && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
1113  av_log(avctx, AV_LOG_ERROR, "codec type or id mismatches\n");
1114  ret = AVERROR(EINVAL);
1115  goto free_and_end;
1116  }
1117  avctx->frame_number = 0;
1118 
1119  if (avctx->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1121  ret = AVERROR_EXPERIMENTAL;
1122  goto free_and_end;
1123  }
1124 
1125  if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
1126  (!avctx->time_base.num || !avctx->time_base.den)) {
1127  avctx->time_base.num = 1;
1128  avctx->time_base.den = avctx->sample_rate;
1129  }
1130 
1131  if (HAVE_THREADS) {
1132  ret = ff_thread_init(avctx);
1133  if (ret < 0) {
1134  goto free_and_end;
1135  }
1136  }
1137  if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
1138  avctx->thread_count = 1;
1139 
1140  if (av_codec_is_encoder(avctx->codec)) {
1141  int i;
1142  if (avctx->codec->sample_fmts) {
1143  for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
1144  if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
1145  break;
1146  if (avctx->channels == 1 &&
1149  avctx->sample_fmt = avctx->codec->sample_fmts[i];
1150  break;
1151  }
1152  }
1153  if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
1154  av_log(avctx, AV_LOG_ERROR, "Specified sample_fmt is not supported.\n");
1155  ret = AVERROR(EINVAL);
1156  goto free_and_end;
1157  }
1158  }
1159  if (avctx->codec->pix_fmts) {
1160  for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
1161  if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
1162  break;
1163  if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE) {
1164  av_log(avctx, AV_LOG_ERROR, "Specified pix_fmt is not supported\n");
1165  ret = AVERROR(EINVAL);
1166  goto free_and_end;
1167  }
1168  }
1169  if (avctx->codec->supported_samplerates) {
1170  for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
1171  if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
1172  break;
1173  if (avctx->codec->supported_samplerates[i] == 0) {
1174  av_log(avctx, AV_LOG_ERROR, "Specified sample_rate is not supported\n");
1175  ret = AVERROR(EINVAL);
1176  goto free_and_end;
1177  }
1178  }
1179  if (avctx->codec->channel_layouts) {
1180  if (!avctx->channel_layout) {
1181  av_log(avctx, AV_LOG_WARNING, "channel_layout not specified\n");
1182  } else {
1183  for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
1184  if (avctx->channel_layout == avctx->codec->channel_layouts[i])
1185  break;
1186  if (avctx->codec->channel_layouts[i] == 0) {
1187  av_log(avctx, AV_LOG_ERROR, "Specified channel_layout is not supported\n");
1188  ret = AVERROR(EINVAL);
1189  goto free_and_end;
1190  }
1191  }
1192  }
1193  if (avctx->channel_layout && avctx->channels) {
1195  av_log(avctx, AV_LOG_ERROR, "channel layout does not match number of channels\n");
1196  ret = AVERROR(EINVAL);
1197  goto free_and_end;
1198  }
1199  } else if (avctx->channel_layout) {
1201  }
1202 
1203  if (!avctx->rc_initial_buffer_occupancy)
1204  avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
1205  }
1206 
1207  if (avctx->codec->init && !(avctx->active_thread_type & FF_THREAD_FRAME)) {
1208  ret = avctx->codec->init(avctx);
1209  if (ret < 0) {
1210  goto free_and_end;
1211  }
1212  }
1213 
1214  if (av_codec_is_decoder(avctx->codec)) {
1215  /* validate channel layout from the decoder */
1216  if (avctx->channel_layout) {
1217  int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1218  if (!avctx->channels)
1219  avctx->channels = channels;
1220  else if (channels != avctx->channels) {
1221  av_log(avctx, AV_LOG_WARNING,
1222  "channel layout does not match number of channels\n");
1223  avctx->channel_layout = 0;
1224  }
1225  }
1226  if (avctx->channels && avctx->channels < 0 ||
1227  avctx->channels > FF_SANE_NB_CHANNELS) {
1228  ret = AVERROR(EINVAL);
1229  goto free_and_end;
1230  }
1231  }
1232 end:
1234 
1235  /* Release any user-supplied mutex. */
1236  if (lockmgr_cb) {
1237  (*lockmgr_cb)(&codec_mutex, AV_LOCK_RELEASE);
1238  }
1239  if (options) {
1240  av_dict_free(options);
1241  *options = tmp;
1242  }
1243 
1244  return ret;
1245 free_and_end:
1246  av_dict_free(&tmp);
1247  av_freep(&avctx->priv_data);
1248  if (avctx->internal) {
1249  av_frame_free(&avctx->internal->to_free);
1250  av_freep(&avctx->internal->pool);
1251  }
1252  av_freep(&avctx->internal);
1253  avctx->codec = NULL;
1254  goto end;
1255 }
1256 
1258 {
1259  if (size > INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE)
1260  return AVERROR(EINVAL);
1261 
1262  if (avpkt->data) {
1263  AVBufferRef *buf = avpkt->buf;
1264 #if FF_API_DESTRUCT_PACKET
1266  void *destruct = avpkt->destruct;
1268 #endif
1269 
1270  if (avpkt->size < size)
1271  return AVERROR(EINVAL);
1272 
1273  av_init_packet(avpkt);
1274 #if FF_API_DESTRUCT_PACKET
1276  avpkt->destruct = destruct;
1278 #endif
1279  avpkt->buf = buf;
1280  avpkt->size = size;
1281  return 0;
1282  } else {
1283  return av_new_packet(avpkt, size);
1284  }
1285 }
1286 
1290 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1291 {
1292  AVFrame *frame = NULL;
1293  int ret;
1294 
1295  if (!(frame = av_frame_alloc()))
1296  return AVERROR(ENOMEM);
1297 
1298  frame->format = src->format;
1299  frame->channel_layout = src->channel_layout;
1300  frame->nb_samples = s->frame_size;
1301  ret = av_frame_get_buffer(frame, 32);
1302  if (ret < 0)
1303  goto fail;
1304 
1305  ret = av_frame_copy_props(frame, src);
1306  if (ret < 0)
1307  goto fail;
1308 
1309  if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1310  src->nb_samples, s->channels, s->sample_fmt)) < 0)
1311  goto fail;
1312  if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1313  frame->nb_samples - src->nb_samples,
1314  s->channels, s->sample_fmt)) < 0)
1315  goto fail;
1316 
1317  *dst = frame;
1318 
1319  return 0;
1320 
1321 fail:
1322  av_frame_free(&frame);
1323  return ret;
1324 }
1325 
1327  AVPacket *avpkt,
1328  const AVFrame *frame,
1329  int *got_packet_ptr)
1330 {
1331  AVFrame tmp;
1332  AVFrame *padded_frame = NULL;
1333  int ret;
1334  int user_packet = !!avpkt->data;
1335 
1336  *got_packet_ptr = 0;
1337 
1338  if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1339  av_free_packet(avpkt);
1340  av_init_packet(avpkt);
1341  return 0;
1342  }
1343 
1344  /* ensure that extended_data is properly set */
1345  if (frame && !frame->extended_data) {
1346  if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1347  avctx->channels > AV_NUM_DATA_POINTERS) {
1348  av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1349  "with more than %d channels, but extended_data is not set.\n",
1351  return AVERROR(EINVAL);
1352  }
1353  av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1354 
1355  tmp = *frame;
1356  tmp.extended_data = tmp.data;
1357  frame = &tmp;
1358  }
1359 
1360  /* check for valid frame size */
1361  if (frame) {
1363  if (frame->nb_samples > avctx->frame_size)
1364  return AVERROR(EINVAL);
1365  } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1366  if (frame->nb_samples < avctx->frame_size &&
1367  !avctx->internal->last_audio_frame) {
1368  ret = pad_last_frame(avctx, &padded_frame, frame);
1369  if (ret < 0)
1370  return ret;
1371 
1372  frame = padded_frame;
1373  avctx->internal->last_audio_frame = 1;
1374  }
1375 
1376  if (frame->nb_samples != avctx->frame_size) {
1377  ret = AVERROR(EINVAL);
1378  goto end;
1379  }
1380  }
1381  }
1382 
1383  ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1384  if (!ret) {
1385  if (*got_packet_ptr) {
1386  if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
1387  if (avpkt->pts == AV_NOPTS_VALUE)
1388  avpkt->pts = frame->pts;
1389  if (!avpkt->duration)
1390  avpkt->duration = ff_samples_to_time_base(avctx,
1391  frame->nb_samples);
1392  }
1393  avpkt->dts = avpkt->pts;
1394  } else {
1395  avpkt->size = 0;
1396  }
1397 
1398  if (!user_packet && avpkt->size) {
1399  ret = av_buffer_realloc(&avpkt->buf, avpkt->size);
1400  if (ret >= 0)
1401  avpkt->data = avpkt->buf->data;
1402  }
1403 
1404  avctx->frame_number++;
1405  }
1406 
1407  if (ret < 0 || !*got_packet_ptr) {
1408  av_free_packet(avpkt);
1409  av_init_packet(avpkt);
1410  goto end;
1411  }
1412 
1413  /* NOTE: if we add any audio encoders which output non-keyframe packets,
1414  * this needs to be moved to the encoders, but for now we can do it
1415  * here to simplify things */
1416  avpkt->flags |= AV_PKT_FLAG_KEY;
1417 
1418 end:
1419  av_frame_free(&padded_frame);
1420 
1421  return ret;
1422 }
1423 
1425  AVPacket *avpkt,
1426  const AVFrame *frame,
1427  int *got_packet_ptr)
1428 {
1429  int ret;
1430  int user_packet = !!avpkt->data;
1431 
1432  *got_packet_ptr = 0;
1433 
1434  if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1435  av_free_packet(avpkt);
1436  av_init_packet(avpkt);
1437  avpkt->size = 0;
1438  return 0;
1439  }
1440 
1441  if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
1442  return AVERROR(EINVAL);
1443 
1444  av_assert0(avctx->codec->encode2);
1445 
1446  ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1447  if (!ret) {
1448  if (!*got_packet_ptr)
1449  avpkt->size = 0;
1450  else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY))
1451  avpkt->pts = avpkt->dts = frame->pts;
1452 
1453  if (!user_packet && avpkt->size) {
1454  ret = av_buffer_realloc(&avpkt->buf, avpkt->size);
1455  if (ret >= 0)
1456  avpkt->data = avpkt->buf->data;
1457  }
1458 
1459  avctx->frame_number++;
1460  }
1461 
1462  if (ret < 0 || !*got_packet_ptr)
1463  av_free_packet(avpkt);
1464 
1465  emms_c();
1466  return ret;
1467 }
1468 
1469 int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
1470  const AVSubtitle *sub)
1471 {
1472  int ret;
1473  if (sub->start_display_time) {
1474  av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
1475  return -1;
1476  }
1477  if (sub->num_rects == 0 || !sub->rects)
1478  return -1;
1479  ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
1480  avctx->frame_number++;
1481  return ret;
1482 }
1483 
1484 static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
1485 {
1486  int size = 0, ret;
1487  const uint8_t *data;
1488  uint32_t flags;
1489 
1490  data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
1491  if (!data)
1492  return 0;
1493 
1494  if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE)) {
1495  av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
1496  "changes, but PARAM_CHANGE side data was sent to it.\n");
1497  return AVERROR(EINVAL);
1498  }
1499 
1500  if (size < 4)
1501  goto fail;
1502 
1503  flags = bytestream_get_le32(&data);
1504  size -= 4;
1505 
1507  if (size < 4)
1508  goto fail;
1509  avctx->channels = bytestream_get_le32(&data);
1510  size -= 4;
1511  }
1513  if (size < 8)
1514  goto fail;
1515  avctx->channel_layout = bytestream_get_le64(&data);
1516  size -= 8;
1517  }
1519  if (size < 4)
1520  goto fail;
1521  avctx->sample_rate = bytestream_get_le32(&data);
1522  size -= 4;
1523  }
1525  if (size < 8)
1526  goto fail;
1527  avctx->width = bytestream_get_le32(&data);
1528  avctx->height = bytestream_get_le32(&data);
1529  size -= 8;
1530  ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
1531  if (ret < 0)
1532  return ret;
1533  }
1534 
1535  return 0;
1536 fail:
1537  av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
1538  return AVERROR_INVALIDDATA;
1539 }
1540 
1541 static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
1542 {
1543  int ret;
1544 
1545  /* move the original frame to our backup */
1546  av_frame_unref(avci->to_free);
1547  av_frame_move_ref(avci->to_free, frame);
1548 
1549  /* now copy everything except the AVBufferRefs back
1550  * note that we make a COPY of the side data, so calling av_frame_free() on
1551  * the caller's frame will work properly */
1552  ret = av_frame_copy_props(frame, avci->to_free);
1553  if (ret < 0)
1554  return ret;
1555 
1556  memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
1557  memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
1558  if (avci->to_free->extended_data != avci->to_free->data) {
1560  int size = planes * sizeof(*frame->extended_data);
1561 
1562  if (!size) {
1563  av_frame_unref(frame);
1564  return AVERROR_BUG;
1565  }
1566 
1567  frame->extended_data = av_malloc(size);
1568  if (!frame->extended_data) {
1569  av_frame_unref(frame);
1570  return AVERROR(ENOMEM);
1571  }
1572  memcpy(frame->extended_data, avci->to_free->extended_data,
1573  size);
1574  } else
1575  frame->extended_data = frame->data;
1576 
1577  frame->format = avci->to_free->format;
1578  frame->width = avci->to_free->width;
1579  frame->height = avci->to_free->height;
1580  frame->channel_layout = avci->to_free->channel_layout;
1581  frame->nb_samples = avci->to_free->nb_samples;
1582 
1583  return 0;
1584 }
1585 
1587  int *got_picture_ptr,
1588  AVPacket *avpkt)
1589 {
1590  AVCodecInternal *avci = avctx->internal;
1591  int ret;
1592 
1593  *got_picture_ptr = 0;
1594  if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
1595  return -1;
1596 
1597  avctx->internal->pkt = avpkt;
1598  ret = apply_param_change(avctx, avpkt);
1599  if (ret < 0) {
1600  av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
1601  if (avctx->err_recognition & AV_EF_EXPLODE)
1602  return ret;
1603  }
1604 
1605  av_frame_unref(picture);
1606 
1607  if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
1609  ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
1610  avpkt);
1611  else {
1612  ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
1613  avpkt);
1614  picture->pkt_dts = avpkt->dts;
1615  /* get_buffer is supposed to set frame parameters */
1616  if (!(avctx->codec->capabilities & CODEC_CAP_DR1)) {
1617  picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
1618  picture->width = avctx->width;
1619  picture->height = avctx->height;
1620  picture->format = avctx->pix_fmt;
1621  }
1622  }
1623 
1624  emms_c(); //needed to avoid an emms_c() call before every return;
1625 
1626  if (*got_picture_ptr) {
1627  if (!avctx->refcounted_frames) {
1628  int err = unrefcount_frame(avci, picture);
1629  if (err < 0)
1630  return err;
1631  }
1632 
1633  avctx->frame_number++;
1634  } else
1635  av_frame_unref(picture);
1636  } else
1637  ret = 0;
1638 
1639  return ret;
1640 }
1641 
1643  AVFrame *frame,
1644  int *got_frame_ptr,
1645  AVPacket *avpkt)
1646 {
1647  AVCodecInternal *avci = avctx->internal;
1648  int ret = 0;
1649 
1650  *got_frame_ptr = 0;
1651 
1652  avctx->internal->pkt = avpkt;
1653 
1654  if (!avpkt->data && avpkt->size) {
1655  av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
1656  return AVERROR(EINVAL);
1657  }
1658 
1659  ret = apply_param_change(avctx, avpkt);
1660  if (ret < 0) {
1661  av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
1662  if (avctx->err_recognition & AV_EF_EXPLODE)
1663  return ret;
1664  }
1665 
1666  av_frame_unref(frame);
1667 
1668  if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
1669  ret = avctx->codec->decode(avctx, frame, got_frame_ptr, avpkt);
1670  if (ret >= 0 && *got_frame_ptr) {
1671  avctx->frame_number++;
1672  frame->pkt_dts = avpkt->dts;
1673  if (frame->format == AV_SAMPLE_FMT_NONE)
1674  frame->format = avctx->sample_fmt;
1675 
1676  if (!avctx->refcounted_frames) {
1677  int err = unrefcount_frame(avci, frame);
1678  if (err < 0)
1679  return err;
1680  }
1681  } else
1682  av_frame_unref(frame);
1683  }
1684 
1685 
1686  return ret;
1687 }
1688 
1690  int *got_sub_ptr,
1691  AVPacket *avpkt)
1692 {
1693  int ret;
1694 
1695  avctx->internal->pkt = avpkt;
1696  *got_sub_ptr = 0;
1697  ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt);
1698  if (*got_sub_ptr)
1699  avctx->frame_number++;
1700  return ret;
1701 }
1702 
1704 {
1705  int i;
1706 
1707  for (i = 0; i < sub->num_rects; i++) {
1708  av_freep(&sub->rects[i]->pict.data[0]);
1709  av_freep(&sub->rects[i]->pict.data[1]);
1710  av_freep(&sub->rects[i]->pict.data[2]);
1711  av_freep(&sub->rects[i]->pict.data[3]);
1712  av_freep(&sub->rects[i]->text);
1713  av_freep(&sub->rects[i]->ass);
1714  av_freep(&sub->rects[i]);
1715  }
1716 
1717  av_freep(&sub->rects);
1718 
1719  memset(sub, 0, sizeof(AVSubtitle));
1720 }
1721 
1723 {
1724  if (avcodec_is_open(avctx)) {
1725  FramePool *pool = avctx->internal->pool;
1726  int i;
1727  if (HAVE_THREADS && avctx->internal->thread_ctx)
1728  ff_thread_free(avctx);
1729  if (avctx->codec && avctx->codec->close)
1730  avctx->codec->close(avctx);
1731  avctx->coded_frame = NULL;
1732  av_frame_free(&avctx->internal->to_free);
1733  for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
1734  av_buffer_pool_uninit(&pool->pools[i]);
1735  av_freep(&avctx->internal->pool);
1736 
1737  if (avctx->hwaccel && avctx->hwaccel->uninit)
1738  avctx->hwaccel->uninit(avctx);
1740 
1741  av_freep(&avctx->internal);
1742  }
1743 
1744  if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
1745  av_opt_free(avctx->priv_data);
1746  av_opt_free(avctx);
1747  av_freep(&avctx->priv_data);
1748  if (av_codec_is_encoder(avctx->codec))
1749  av_freep(&avctx->extradata);
1750  avctx->codec = NULL;
1751  avctx->active_thread_type = 0;
1752 
1753  return 0;
1754 }
1755 
1756 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
1757 {
1758  AVCodec *p, *experimental = NULL;
1759  p = first_avcodec;
1760  while (p) {
1761  if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
1762  p->id == id) {
1763  if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
1764  experimental = p;
1765  } else
1766  return p;
1767  }
1768  p = p->next;
1769  }
1770  return experimental;
1771 }
1772 
1774 {
1775  return find_encdec(id, 1);
1776 }
1777 
1779 {
1780  AVCodec *p;
1781  if (!name)
1782  return NULL;
1783  p = first_avcodec;
1784  while (p) {
1785  if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
1786  return p;
1787  p = p->next;
1788  }
1789  return NULL;
1790 }
1791 
1793 {
1794  return find_encdec(id, 0);
1795 }
1796 
1798 {
1799  AVCodec *p;
1800  if (!name)
1801  return NULL;
1802  p = first_avcodec;
1803  while (p) {
1804  if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
1805  return p;
1806  p = p->next;
1807  }
1808  return NULL;
1809 }
1810 
1812 {
1813  int bit_rate;
1814  int bits_per_sample;
1815 
1816  switch (ctx->codec_type) {
1817  case AVMEDIA_TYPE_VIDEO:
1818  case AVMEDIA_TYPE_DATA:
1819  case AVMEDIA_TYPE_SUBTITLE:
1821  bit_rate = ctx->bit_rate;
1822  break;
1823  case AVMEDIA_TYPE_AUDIO:
1824  bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1825  bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1826  break;
1827  default:
1828  bit_rate = 0;
1829  break;
1830  }
1831  return bit_rate;
1832 }
1833 
1834 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
1835 {
1836  int i, len, ret = 0;
1837 
1838 #define TAG_PRINT(x) \
1839  (((x) >= '0' && (x) <= '9') || \
1840  ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
1841  ((x) == '.' || (x) == ' '))
1842 
1843  for (i = 0; i < 4; i++) {
1844  len = snprintf(buf, buf_size,
1845  TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
1846  buf += len;
1847  buf_size = buf_size > len ? buf_size - len : 0;
1848  ret += len;
1849  codec_tag >>= 8;
1850  }
1851  return ret;
1852 }
1853 
1854 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
1855 {
1856  const char *codec_name;
1857  const char *profile = NULL;
1858  const AVCodec *p;
1859  char buf1[32];
1860  int bitrate;
1861  AVRational display_aspect_ratio;
1862 
1863  if (enc->codec)
1864  p = enc->codec;
1865  else if (encode)
1866  p = avcodec_find_encoder(enc->codec_id);
1867  else
1868  p = avcodec_find_decoder(enc->codec_id);
1869 
1870  if (p) {
1871  codec_name = p->name;
1872  profile = av_get_profile_name(p, enc->profile);
1873  } else if (enc->codec_id == AV_CODEC_ID_MPEG2TS) {
1874  /* fake mpeg2 transport stream codec (currently not
1875  * registered) */
1876  codec_name = "mpeg2ts";
1877  } else {
1878  /* output avi tags */
1879  char tag_buf[32];
1880  av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
1881  snprintf(buf1, sizeof(buf1), "%s / 0x%04X", tag_buf, enc->codec_tag);
1882  codec_name = buf1;
1883  }
1884 
1885  switch (enc->codec_type) {
1886  case AVMEDIA_TYPE_VIDEO:
1887  snprintf(buf, buf_size,
1888  "Video: %s%s",
1889  codec_name, enc->mb_decision ? " (hq)" : "");
1890  if (profile)
1891  snprintf(buf + strlen(buf), buf_size - strlen(buf),
1892  " (%s)", profile);
1893  if (enc->pix_fmt != AV_PIX_FMT_NONE) {
1894  snprintf(buf + strlen(buf), buf_size - strlen(buf),
1895  ", %s",
1897  }
1898  if (enc->width) {
1899  snprintf(buf + strlen(buf), buf_size - strlen(buf),
1900  ", %dx%d",
1901  enc->width, enc->height);
1902  if (enc->sample_aspect_ratio.num) {
1903  av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
1904  enc->width * enc->sample_aspect_ratio.num,
1905  enc->height * enc->sample_aspect_ratio.den,
1906  1024 * 1024);
1907  snprintf(buf + strlen(buf), buf_size - strlen(buf),
1908  " [PAR %d:%d DAR %d:%d]",
1910  display_aspect_ratio.num, display_aspect_ratio.den);
1911  }
1912  if (av_log_get_level() >= AV_LOG_DEBUG) {
1913  int g = av_gcd(enc->time_base.num, enc->time_base.den);
1914  snprintf(buf + strlen(buf), buf_size - strlen(buf),
1915  ", %d/%d",
1916  enc->time_base.num / g, enc->time_base.den / g);
1917  }
1918  }
1919  if (encode) {
1920  snprintf(buf + strlen(buf), buf_size - strlen(buf),
1921  ", q=%d-%d", enc->qmin, enc->qmax);
1922  }
1923  break;
1924  case AVMEDIA_TYPE_AUDIO:
1925  snprintf(buf, buf_size,
1926  "Audio: %s",
1927  codec_name);
1928  if (profile)
1929  snprintf(buf + strlen(buf), buf_size - strlen(buf),
1930  " (%s)", profile);
1931  if (enc->sample_rate) {
1932  snprintf(buf + strlen(buf), buf_size - strlen(buf),
1933  ", %d Hz", enc->sample_rate);
1934  }
1935  av_strlcat(buf, ", ", buf_size);
1936  av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
1937  if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
1938  snprintf(buf + strlen(buf), buf_size - strlen(buf),
1939  ", %s", av_get_sample_fmt_name(enc->sample_fmt));
1940  }
1941  break;
1942  case AVMEDIA_TYPE_DATA:
1943  snprintf(buf, buf_size, "Data: %s", codec_name);
1944  break;
1945  case AVMEDIA_TYPE_SUBTITLE:
1946  snprintf(buf, buf_size, "Subtitle: %s", codec_name);
1947  break;
1949  snprintf(buf, buf_size, "Attachment: %s", codec_name);
1950  break;
1951  default:
1952  snprintf(buf, buf_size, "Invalid Codec type %d", enc->codec_type);
1953  return;
1954  }
1955  if (encode) {
1956  if (enc->flags & CODEC_FLAG_PASS1)
1957  snprintf(buf + strlen(buf), buf_size - strlen(buf),
1958  ", pass 1");
1959  if (enc->flags & CODEC_FLAG_PASS2)
1960  snprintf(buf + strlen(buf), buf_size - strlen(buf),
1961  ", pass 2");
1962  }
1963  bitrate = get_bit_rate(enc);
1964  if (bitrate != 0) {
1965  snprintf(buf + strlen(buf), buf_size - strlen(buf),
1966  ", %d kb/s", bitrate / 1000);
1967  }
1968 }
1969 
1970 const char *av_get_profile_name(const AVCodec *codec, int profile)
1971 {
1972  const AVProfile *p;
1973  if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
1974  return NULL;
1975 
1976  for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
1977  if (p->profile == profile)
1978  return p->name;
1979 
1980  return NULL;
1981 }
1982 
1983 unsigned avcodec_version(void)
1984 {
1985  return LIBAVCODEC_VERSION_INT;
1986 }
1987 
1988 const char *avcodec_configuration(void)
1989 {
1990  return LIBAV_CONFIGURATION;
1991 }
1992 
1993 const char *avcodec_license(void)
1994 {
1995 #define LICENSE_PREFIX "libavcodec license: "
1996  return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1;
1997 }
1998 
2000 {
2002  ff_thread_flush(avctx);
2003  else if (avctx->codec->flush)
2004  avctx->codec->flush(avctx);
2005 
2006  if (!avctx->refcounted_frames)
2007  av_frame_unref(avctx->internal->to_free);
2008 }
2009 
2011 {
2012  switch (codec_id) {
2013  case AV_CODEC_ID_ADPCM_CT:
2019  return 4;
2020  case AV_CODEC_ID_PCM_ALAW:
2021  case AV_CODEC_ID_PCM_MULAW:
2022  case AV_CODEC_ID_PCM_S8:
2023  case AV_CODEC_ID_PCM_U8:
2024  case AV_CODEC_ID_PCM_ZORK:
2025  return 8;
2026  case AV_CODEC_ID_PCM_S16BE:
2027  case AV_CODEC_ID_PCM_S16LE:
2029  case AV_CODEC_ID_PCM_U16BE:
2030  case AV_CODEC_ID_PCM_U16LE:
2031  return 16;
2033  case AV_CODEC_ID_PCM_S24BE:
2034  case AV_CODEC_ID_PCM_S24LE:
2036  case AV_CODEC_ID_PCM_U24BE:
2037  case AV_CODEC_ID_PCM_U24LE:
2038  return 24;
2039  case AV_CODEC_ID_PCM_S32BE:
2040  case AV_CODEC_ID_PCM_S32LE:
2042  case AV_CODEC_ID_PCM_U32BE:
2043  case AV_CODEC_ID_PCM_U32LE:
2044  case AV_CODEC_ID_PCM_F32BE:
2045  case AV_CODEC_ID_PCM_F32LE:
2046  return 32;
2047  case AV_CODEC_ID_PCM_F64BE:
2048  case AV_CODEC_ID_PCM_F64LE:
2049  return 64;
2050  default:
2051  return 0;
2052  }
2053 }
2054 
2056 {
2057  switch (codec_id) {
2059  return 2;
2061  return 3;
2065  case AV_CODEC_ID_ADPCM_SWF:
2066  case AV_CODEC_ID_ADPCM_MS:
2067  return 4;
2068  default:
2069  return av_get_exact_bits_per_sample(codec_id);
2070  }
2071 }
2072 
2073 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
2074 {
2075  int id, sr, ch, ba, tag, bps;
2076 
2077  id = avctx->codec_id;
2078  sr = avctx->sample_rate;
2079  ch = avctx->channels;
2080  ba = avctx->block_align;
2081  tag = avctx->codec_tag;
2082  bps = av_get_exact_bits_per_sample(avctx->codec_id);
2083 
2084  /* codecs with an exact constant bits per sample */
2085  if (bps > 0 && ch > 0 && frame_bytes > 0)
2086  return (frame_bytes * 8) / (bps * ch);
2087  bps = avctx->bits_per_coded_sample;
2088 
2089  /* codecs with a fixed packet duration */
2090  switch (id) {
2091  case AV_CODEC_ID_ADPCM_ADX: return 32;
2092  case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
2093  case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
2094  case AV_CODEC_ID_AMR_NB:
2095  case AV_CODEC_ID_GSM:
2096  case AV_CODEC_ID_QCELP:
2097  case AV_CODEC_ID_RA_144:
2098  case AV_CODEC_ID_RA_288: return 160;
2099  case AV_CODEC_ID_IMC: return 256;
2100  case AV_CODEC_ID_AMR_WB:
2101  case AV_CODEC_ID_GSM_MS: return 320;
2102  case AV_CODEC_ID_MP1: return 384;
2103  case AV_CODEC_ID_ATRAC1: return 512;
2104  case AV_CODEC_ID_ATRAC3: return 1024;
2105  case AV_CODEC_ID_MP2:
2106  case AV_CODEC_ID_MUSEPACK7: return 1152;
2107  case AV_CODEC_ID_AC3: return 1536;
2108  }
2109 
2110  if (sr > 0) {
2111  /* calc from sample rate */
2112  if (id == AV_CODEC_ID_TTA)
2113  return 256 * sr / 245;
2114 
2115  if (ch > 0) {
2116  /* calc from sample rate and channels */
2117  if (id == AV_CODEC_ID_BINKAUDIO_DCT)
2118  return (480 << (sr / 22050)) / ch;
2119  }
2120  }
2121 
2122  if (ba > 0) {
2123  /* calc from block_align */
2124  if (id == AV_CODEC_ID_SIPR) {
2125  switch (ba) {
2126  case 20: return 160;
2127  case 19: return 144;
2128  case 29: return 288;
2129  case 37: return 480;
2130  }
2131  } else if (id == AV_CODEC_ID_ILBC) {
2132  switch (ba) {
2133  case 38: return 160;
2134  case 50: return 240;
2135  }
2136  }
2137  }
2138 
2139  if (frame_bytes > 0) {
2140  /* calc from frame_bytes only */
2141  if (id == AV_CODEC_ID_TRUESPEECH)
2142  return 240 * (frame_bytes / 32);
2143  if (id == AV_CODEC_ID_NELLYMOSER)
2144  return 256 * (frame_bytes / 64);
2145 
2146  if (bps > 0) {
2147  /* calc from frame_bytes and bits_per_coded_sample */
2148  if (id == AV_CODEC_ID_ADPCM_G726)
2149  return frame_bytes * 8 / bps;
2150  }
2151 
2152  if (ch > 0) {
2153  /* calc from frame_bytes and channels */
2154  switch (id) {
2155  case AV_CODEC_ID_ADPCM_4XM:
2157  return (frame_bytes - 4 * ch) * 2 / ch;
2159  return (frame_bytes - 4) * 2 / ch;
2161  return (frame_bytes - 8) * 2 / ch;
2162  case AV_CODEC_ID_ADPCM_XA:
2163  return (frame_bytes / 128) * 224 / ch;
2165  return (frame_bytes - 6 - ch) / ch;
2166  case AV_CODEC_ID_ROQ_DPCM:
2167  return (frame_bytes - 8) / ch;
2168  case AV_CODEC_ID_XAN_DPCM:
2169  return (frame_bytes - 2 * ch) / ch;
2170  case AV_CODEC_ID_MACE3:
2171  return 3 * frame_bytes / ch;
2172  case AV_CODEC_ID_MACE6:
2173  return 6 * frame_bytes / ch;
2174  case AV_CODEC_ID_PCM_LXF:
2175  return 2 * (frame_bytes / (5 * ch));
2176  }
2177 
2178  if (tag) {
2179  /* calc from frame_bytes, channels, and codec_tag */
2180  if (id == AV_CODEC_ID_SOL_DPCM) {
2181  if (tag == 3)
2182  return frame_bytes / ch;
2183  else
2184  return frame_bytes * 2 / ch;
2185  }
2186  }
2187 
2188  if (ba > 0) {
2189  /* calc from frame_bytes, channels, and block_align */
2190  int blocks = frame_bytes / ba;
2191  switch (avctx->codec_id) {
2193  return blocks * (1 + (ba - 4 * ch) / (4 * ch) * 8);
2195  return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
2197  return blocks * (1 + (ba - 4 * ch) * 2 / ch);
2198  case AV_CODEC_ID_ADPCM_MS:
2199  return blocks * (2 + (ba - 7 * ch) * 2 / ch);
2200  }
2201  }
2202 
2203  if (bps > 0) {
2204  /* calc from frame_bytes, channels, and bits_per_coded_sample */
2205  switch (avctx->codec_id) {
2206  case AV_CODEC_ID_PCM_DVD:
2207  return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
2209  return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
2210  case AV_CODEC_ID_S302M:
2211  return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
2212  }
2213  }
2214  }
2215  }
2216 
2217  return 0;
2218 }
2219 
2220 #if !HAVE_THREADS
2222 {
2223  return -1;
2224 }
2225 
2226 #endif
2227 
2228 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
2229 {
2230  unsigned int n = 0;
2231 
2232  while (v >= 0xff) {
2233  *s++ = 0xff;
2234  v -= 0xff;
2235  n++;
2236  }
2237  *s = v;
2238  n++;
2239  return n;
2240 }
2241 
2242 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
2243 {
2244  int i;
2245  for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
2246  return i;
2247 }
2248 
2249 #if FF_API_MISSING_SAMPLE
2251 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
2252 {
2253  av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your Libav "
2254  "version to the newest one from Git. If the problem still "
2255  "occurs, it means that your file has a feature which has not "
2256  "been implemented.\n", feature);
2257  if(want_sample)
2259 }
2260 
2261 void av_log_ask_for_sample(void *avc, const char *msg, ...)
2262 {
2263  va_list argument_list;
2264 
2265  va_start(argument_list, msg);
2266 
2267  if (msg)
2268  av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
2269  av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
2270  "of this file to ftp://upload.libav.org/incoming/ "
2271  "and contact the libav-devel mailing list.\n");
2272 
2273  va_end(argument_list);
2274 }
2276 #endif /* FF_API_MISSING_SAMPLE */
2277 
2279 
2281 {
2282  AVHWAccel **p = &first_hwaccel;
2283  while (*p)
2284  p = &(*p)->next;
2285  *p = hwaccel;
2286  hwaccel->next = NULL;
2287 }
2288 
2290 {
2291  return hwaccel ? hwaccel->next : first_hwaccel;
2292 }
2293 
2294 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
2295 {
2296  if (lockmgr_cb) {
2298  return -1;
2300  return -1;
2301  }
2302 
2303  lockmgr_cb = cb;
2304 
2305  if (lockmgr_cb) {
2307  return -1;
2309  return -1;
2310  }
2311  return 0;
2312 }
2313 
2315 {
2316  if (lockmgr_cb) {
2318  return -1;
2319  }
2320  return 0;
2321 }
2322 
2324 {
2325  if (lockmgr_cb) {
2327  return -1;
2328  }
2329  return 0;
2330 }
2331 
2332 unsigned int avpriv_toupper4(unsigned int x)
2333 {
2334  return av_toupper(x & 0xFF) +
2335  (av_toupper((x >> 8) & 0xFF) << 8) +
2336  (av_toupper((x >> 16) & 0xFF) << 16) +
2337  (av_toupper((x >> 24) & 0xFF) << 24);
2338 }
2339 
2341 {
2342  int ret;
2343 
2344  dst->owner = src->owner;
2345 
2346  ret = av_frame_ref(dst->f, src->f);
2347  if (ret < 0)
2348  return ret;
2349 
2350  if (src->progress &&
2351  !(dst->progress = av_buffer_ref(src->progress))) {
2352  ff_thread_release_buffer(dst->owner, dst);
2353  return AVERROR(ENOMEM);
2354  }
2355 
2356  return 0;
2357 }
2358 
2359 #if !HAVE_THREADS
2360 
2362 {
2363  f->owner = avctx;
2364  return ff_get_buffer(avctx, f->f, flags);
2365 }
2366 
2368 {
2369  if (f->f)
2370  av_frame_unref(f->f);
2371 }
2372 
2374 {
2375 }
2376 
2377 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
2378 {
2379 }
2380 
2381 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
2382 {
2383 }
2384 
2385 #endif
2386 
2388 {
2389  if (codec_id <= AV_CODEC_ID_NONE)
2390  return AVMEDIA_TYPE_UNKNOWN;
2391  else if (codec_id < AV_CODEC_ID_FIRST_AUDIO)
2392  return AVMEDIA_TYPE_VIDEO;
2393  else if (codec_id < AV_CODEC_ID_FIRST_SUBTITLE)
2394  return AVMEDIA_TYPE_AUDIO;
2395  else if (codec_id < AV_CODEC_ID_FIRST_UNKNOWN)
2396  return AVMEDIA_TYPE_SUBTITLE;
2397 
2398  return AVMEDIA_TYPE_UNKNOWN;
2399 }
2400 
2402 {
2403  return !!s->internal;
2404 }
2405 
2407  const uint8_t *end,
2408  uint32_t * restrict state)
2409 {
2410  int i;
2411 
2412  assert(p <= end);
2413  if (p >= end)
2414  return end;
2415 
2416  for (i = 0; i < 3; i++) {
2417  uint32_t tmp = *state << 8;
2418  *state = tmp + *(p++);
2419  if (tmp == 0x100 || p == end)
2420  return p;
2421  }
2422 
2423  while (p < end) {
2424  if (p[-1] > 1 ) p += 3;
2425  else if (p[-2] ) p += 2;
2426  else if (p[-3]|(p[-1]-1)) p++;
2427  else {
2428  p++;
2429  break;
2430  }
2431  }
2432 
2433  p = FFMIN(p, end) - 4;
2434  *state = AV_RB32(p);
2435 
2436  return p + 4;
2437 }
#define WRAP_PLANE(ref_out, data, data_size)
#define FF_SANE_NB_CHANNELS
Definition: internal.h:36
#define FF_COMPLIANCE_EXPERIMENTAL
Allow nonstandardized experimental things.
Definition: avcodec.h:2362
static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
Definition: utils.c:1484
packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1
Definition: pixfmt.h:84
uint64_t av_get_default_channel_layout(int nb_channels)
Return default channel layout for a given number of channels.
const struct AVCodec * codec
Definition: avcodec.h:1059
planar YUV 4:2:2, 18bpp, (1 Cr & Cb sample per 2x1 Y samples), big-endian
Definition: pixfmt.h:160
void * av_malloc(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
Definition: mem.c:62
static AVCodec * find_encdec(enum AVCodecID id, int encoder)
Definition: utils.c:1756
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:54
#define AV_NUM_DATA_POINTERS
Definition: frame.h:136
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:106
int size
int linesize[AV_NUM_DATA_POINTERS]
number of bytes per line
Definition: avcodec.h:3044
void av_free_packet(AVPacket *pkt)
Free a packet.
Definition: avpacket.c:243
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:1599
This structure describes decoded (raw) audio or video data.
Definition: frame.h:135
AVCodec * avcodec_find_encoder(enum AVCodecID id)
Find a registered encoder with a matching codec ID.
Definition: utils.c:1773
int(* init)(AVCodecContext *avctx)
Initialize the hwaccel private data.
Definition: avcodec.h:3014
int stride_align[AV_NUM_DATA_POINTERS]
Definition: internal.h:52
A dummy id pointing at the start of audio codecs.
Definition: avcodec.h:298
planar YUV 4:2:0, 15bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
Definition: pixfmt.h:153
enum AVCodecID id
Definition: mxfenc.c:84
#define CODEC_FLAG_PASS2
Use internal 2pass ratecontrol in second pass mode.
Definition: avcodec.h:636
#define CODEC_CAP_VARIABLE_FRAME_SIZE
Audio encoder supports receiving a different number of samples in each call.
Definition: avcodec.h:771
int coded_width
Bitstream width / height, may be different from width/height e.g.
Definition: avcodec.h:1244
void(* flush)(AVCodecContext *)
Flush buffers.
Definition: avcodec.h:2903
int av_lockmgr_register(int(*cb)(void **mutex, enum AVLockOp op))
Register a user provided lock manager supporting the operations specified by AVLockOp.
Definition: utils.c:2294
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:70
misc image utilities
Unlock the mutex.
Definition: avcodec.h:4402
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:129
AVFrame * f
Definition: thread.h:36
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:1637
AVFrame * to_free
Definition: internal.h:89
AVBufferRef * buf[AV_NUM_DATA_POINTERS]
AVBuffer references backing the data for this frame.
Definition: frame.h:393
#define CODEC_FLAG_PASS1
Use internal 2pass ratecontrol in first pass mode.
Definition: avcodec.h:635
AVFrame * coded_frame
the picture in the bitstream
Definition: avcodec.h:2548
int width
Definition: internal.h:51
planar YUV 4:4:4, 27bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
Definition: pixfmt.h:156
int rc_initial_buffer_occupancy
Number of bits which should be loaded into the rc buffer before decoding starts.
Definition: avcodec.h:2180
This side data should be associated with a video stream and contains Stereoscopic 3D information in f...
Definition: avcodec.h:919
void av_opt_set_defaults(void *s)
Set the values of all AVOption fields to their default values.
Definition: opt.c:546
const char * avcodec_configuration(void)
Return the libavcodec build-time configuration.
Definition: utils.c:1988
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition: avcodec.h:1782
int nb_extended_buf
Number of elements in extended_buf.
Definition: frame.h:411
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:163
int num
numerator
Definition: rational.h:44
int size
Definition: avcodec.h:974
const char * avcodec_license(void)
Return the libavcodec license.
Definition: utils.c:1993
enum AVPixelFormat pix_fmt
Supported pixel format.
Definition: avcodec.h:2936
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown) That is the width of a pixel divided by the height of the pixel...
Definition: avcodec.h:1445
static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
Pad last frame with silence.
Definition: utils.c:1290
AVPacket * pkt
Current packet as passed into the decoder, to avoid having to pass the packet into every function...
Definition: internal.h:99
planar YUV 4:4:4 40bpp, (1 Cr & Cb sample per 1x1 Y & A samples, little-endian)
Definition: pixfmt.h:183
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1270
int samples
Definition: internal.h:56
unsigned num_rects
Definition: avcodec.h:3103
void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
Allocate a buffer with padding, reusing the given one if large enough.
Definition: utils.c:59
A dummy ID pointing at the start of various fake codecs.
Definition: avcodec.h:461
#define LIBAV_CONFIGURATION
Definition: config.h:4
planar YUV 4:2:0, 13.5bpp, (1 Cr & Cb sample per 2x2 Y samples), big-endian
Definition: pixfmt.h:150
void av_frame_move_ref(AVFrame *dst, AVFrame *src)
Move everythnig contained in src to dst and reset src.
Definition: frame.c:300
mpegvideo header.
enum AVMediaType type
Definition: avcodec.h:2825
size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
Put a string representing the codec tag codec_tag in buf.
Definition: utils.c:1834
#define FF_ARRAY_ELEMS(a)
AVBufferPool * pools[4]
Pools for each data plane.
Definition: internal.h:45
int(* decode)(AVCodecContext *, void *outdata, int *outdata_size, AVPacket *avpkt)
Definition: avcodec.h:2897
int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr)
Encode a frame of audio.
Definition: utils.c:1326
int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub, int *got_sub_ptr, AVPacket *avpkt)
Decode a subtitle message.
Definition: utils.c:1689
void avcodec_default_release_buffer(AVCodecContext *s, AVFrame *pic)
Definition: utils.c:852
attribute_deprecated int(* get_buffer)(struct AVCodecContext *c, AVFrame *pic)
Called at the beginning of each frame to get a buffer for it.
Definition: avcodec.h:1955
four components are given, that's all.
Definition: avcodec.h:3042
int profile
profile
Definition: avcodec.h:2638
AVCodec.
Definition: avcodec.h:2812
int block_align
number of bytes per packet if constant and known or 0 Used by some WAV based audio codecs...
Definition: avcodec.h:1844
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:80
AVLockOp
Lock operation used by lockmgr.
Definition: avcodec.h:4399
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:133
attribute_deprecated void(* release_buffer)(struct AVCodecContext *c, AVFrame *pic)
Called to release buffers which were allocated with get_buffer.
Definition: avcodec.h:1969
char * text
0 terminated plain UTF-8 text
Definition: avcodec.h:3088
unsigned avcodec_get_edge_width(void)
Return the amount of padding in pixels which the get_buffer callback must provide around the edge of ...
Definition: utils.c:120
Macro definitions for various function/variable attributes.
#define FFALIGN(x, a)
Definition: common.h:62
FF_DISABLE_DEPRECATION_WARNINGS void av_log_missing_feature(void *avc, const char *feature, int want_sample)
Log a generic warning message about a missing feature.
Definition: utils.c:2251
static void * codec_mutex
Definition: utils.c:56
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avcodec.h:1175
void av_freep(void *arg)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc() and set the pointer ...
Definition: mem.c:198
AVFrameSideData * av_frame_get_side_data(const AVFrame *frame, enum AVFrameSideDataType type)
Definition: frame.c:477
AVSubtitleRect ** rects
Definition: avcodec.h:3104
int av_codec_is_decoder(const AVCodec *codec)
Definition: utils.c:100
int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels, enum AVSampleFormat sample_fmt, const uint8_t *buf, int buf_size, int align)
Fill audio frame data and linesize.
Definition: utils.c:296
int av_codec_is_encoder(const AVCodec *codec)
Definition: utils.c:95
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
Modify width and height values so that they will result in a memory buffer that is acceptable for the...
Definition: utils.c:281
struct AVHWAccel * hwaccel
Hardware accelerator in use.
Definition: avcodec.h:2448
static int volatile entangled_thread_counter
Definition: utils.c:54
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
Public dictionary API.
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:104
int height
Definition: internal.h:51
enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
Definition: utils.c:894
enum AVSampleFormat sample_fmt
audio sample format
Definition: avcodec.h:1815
Lock the mutex.
Definition: avcodec.h:4401
uint8_t
#define av_cold
Definition: attributes.h:66
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:57
Opaque data information usually continuous.
Definition: avutil.h:189
8 bit with PIX_FMT_RGB32 palette
Definition: pixfmt.h:76
AVOptions.
attribute_deprecated void(* destruct)(struct AVPacket *)
Definition: avcodec.h:994
uint8_t * data[AV_NUM_DATA_POINTERS]
Definition: avcodec.h:3043
int avpriv_set_systematic_pal2(uint32_t pal[256], enum AVPixelFormat pix_fmt)
Definition: imgutils.c:141
#define AV_RB32
Definition: intreadwrite.h:130
void * thread_ctx
Definition: internal.h:93
static AVCodec * first_avcodec
Definition: utils.c:73
This side data contains a 3x3 transformation matrix describing an affine transformation that needs to...
Definition: avcodec.h:913
int ff_side_data_update_matrix_encoding(AVFrame *frame, enum AVMatrixEncoding matrix_encoding)
Add or update AV_FRAME_DATA_MATRIXENCODING side data.
Definition: utils.c:160
Multithreading support functions.
#define b
Definition: input.c:52
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
Definition: frame.c:188
#define emms_c()
Definition: internal.h:47
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:211
#define LIBAVCODEC_VERSION_INT
Definition: version.h:35
int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
Identical in function to av_frame_make_writable(), except it uses ff_get_buffer() to allocate the buf...
Definition: utils.c:820
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:1164
const char * name
#define LICENSE_PREFIX
int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr)
Encode a frame of video.
Definition: utils.c:1424
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:684
int planes
Definition: internal.h:54
const char data[16]
Definition: mxf.c:70
int av_image_check_sar(unsigned int w, unsigned int h, AVRational sar)
Check if the given sample aspect ratio of an image is valid.
Definition: imgutils.c:233
uint8_t * data
Definition: avcodec.h:973
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of PIX_FMT_YUV440P and setting color_range ...
Definition: pixfmt.h:103
static int(* lockmgr_cb)(void **mutex, enum AVLockOp op)
Definition: utils.c:55
static int flags
Definition: log.c:44
uint32_t tag
Definition: movenc.c:844
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of PIX_FMT_YUV422P and setting color_...
Definition: pixfmt.h:78
enum AVSampleFormat av_get_planar_sample_fmt(enum AVSampleFormat sample_fmt)
Get the planar alternative form of the given sample format.
Definition: samplefmt.c:73
int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
Return the index into tab at which {a,b} match elements {[0],[1]} of tab.
Definition: utils.c:2242
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
Definition: avcodec.h:2523
int ff_set_sar(AVCodecContext *avctx, AVRational sar)
Check that the provided sample aspect ratio is valid and set it on the codec context.
Definition: utils.c:145
int duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: avcodec.h:991
void av_dict_copy(AVDictionary **dst, const AVDictionary *src, int flags)
Copy entries from one AVDictionary struct into another.
Definition: dict.c:184
enum AVChromaLocation chroma_sample_location
This defines the location of chroma samples.
Definition: avcodec.h:1789
AVCodecContext * owner
Definition: thread.h:37
const char * name
Definition: pixdesc.h:70
#define FF_BUFFER_TYPE_INTERNAL
Definition: avcodec.h:836
int av_sample_fmt_is_planar(enum AVSampleFormat sample_fmt)
Check if the sample format is planar.
Definition: samplefmt.c:101
#define r
Definition: input.c:51
FramePool * pool
Definition: internal.h:91
static void compat_release_buffer(void *opaque, uint8_t *data)
Definition: utils.c:552
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1019
AVCodec * avcodec_find_encoder_by_name(const char *name)
Find a registered encoder with the specified name.
Definition: utils.c:1778
const OptionDef options[]
Definition: avconv_opt.c:2187
void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, int linesize_align[AV_NUM_DATA_POINTERS])
Modify width and height values so that they will result in a memory buffer that is acceptable for the...
Definition: utils.c:186
static av_cold void avcodec_init(void)
Definition: utils.c:83
int ff_thread_decode_frame(AVCodecContext *avctx, AVFrame *picture, int *got_picture_ptr, AVPacket *avpkt)
Submit a new frame to a decoding thread.
planar YUV 4:2:0, 13.5bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
Definition: pixfmt.h:151
void avcodec_set_dimensions(AVCodecContext *s, int width, int height)
Definition: utils.c:127
Libavcodec version macros.
int(* close)(AVCodecContext *)
Definition: avcodec.h:2898
av_cold int avcodec_close(AVCodecContext *avctx)
Close a given AVCodecContext and free all the data associated with it (but not the AVCodecContext its...
Definition: utils.c:1722
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
Definition: avpacket.c:81
enum AVCodecID id
Definition: avcodec.h:2826
const uint64_t * channel_layouts
array of support channel layouts, or NULL if unknown. array is terminated by 0
Definition: avcodec.h:2836
#define STRIDE_ALIGN
Definition: utils.c:183
planar GBR 4:4:4 27bpp, big-endian
Definition: pixfmt.h:164
planar YUV 4:4:4, 30bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
Definition: pixfmt.h:159
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:170
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: avcodec.h:105
int width
width and height of the video frame
Definition: frame.h:174
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:123
int av_get_bits_per_sample(enum AVCodecID codec_id)
Return codec bits per sample.
Definition: utils.c:2055
void av_free(void *ptr)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc(). ...
Definition: mem.c:186
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:89
Create a mutex.
Definition: avcodec.h:4400
int av_samples_set_silence(uint8_t **audio_data, int offset, int nb_samples, int nb_channels, enum AVSampleFormat sample_fmt)
Fill an audio buffer with silence.
Definition: samplefmt.c:206
#define CODEC_CAP_PARAM_CHANGE
Codec supports changed parameters at any point.
Definition: avcodec.h:763
#define CODEC_CAP_DELAY
Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...
Definition: avcodec.h:713
An AV_PKT_DATA_PARAM_CHANGE side data packet is laid out as follows:
Definition: avcodec.h:877
#define AVERROR(e)
Definition: error.h:43
unsigned int avpriv_toupper4(unsigned int x)
Definition: utils.c:2332
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:69
int qmax
maximum quantizer
Definition: avcodec.h:2096
AVCodec * av_codec_next(const AVCodec *c)
If c is NULL, returns the first registered codec, if c is non-NULL, returns the next registered codec...
Definition: utils.c:75
#define CODEC_CAP_SMALL_LAST_FRAME
Codec can be fed a final frame with a smaller size.
Definition: avcodec.h:718
int active_thread_type
Which multithreading methods are in use by the codec.
Definition: avcodec.h:2575
int avcodec_is_open(AVCodecContext *s)
Definition: utils.c:2401
g
Definition: yuv2rgb.c:535
int capabilities
Codec capabilities.
Definition: avcodec.h:2831
enum AVColorRange color_range
Definition: frame.h:436
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:144
int ff_thread_init(AVCodecContext *s)
Definition: utils.c:2221
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values. ...
Definition: dict.c:170
int av_get_channel_layout_nb_channels(uint64_t channel_layout)
Return the number of channels in the channel layout.
AVBufferRef * buf
A reference to the reference-counted buffer where the packet data is stored.
Definition: avcodec.h:956
planar YUV 4:2:2, 20bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
Definition: pixfmt.h:155
int flags
CODEC_FLAG_*.
Definition: avcodec.h:1144
enum AVColorSpace colorspace
Definition: frame.h:442
#define AV_PIX_FMT_FLAG_HWACCEL
Pixel format is an HW accelerated format.
Definition: pixdesc.h:120
simple assert() macros that are a bit more flexible than ISO C assert().
int64_t av_gcd(int64_t a, int64_t b)
Return the greatest common divisor of a and b.
Definition: mathematics.c:53
void av_log(void *avcl, int level, const char *fmt,...)
Definition: log.c:169
enum AVMediaType avcodec_get_type(enum AVCodecID codec_id)
Get the type of the given codec.
Definition: utils.c:2387
int av_log_get_level(void)
Get the current log level.
Definition: log.c:186
const char * name
Name of the codec implementation.
Definition: avcodec.h:2819
AVBufferRef * av_buffer_create(uint8_t *data, int size, void(*free)(void *opaque, uint8_t *data), void *opaque, int flags)
Create an AVBuffer from an existing array.
Definition: buffer.c:28
const char * av_get_sample_fmt_name(enum AVSampleFormat sample_fmt)
Return the name of sample_fmt, or NULL if sample_fmt is not recognized.
Definition: samplefmt.c:47
int av_buffer_realloc(AVBufferRef **pbuf, int size)
Reallocate a given buffer.
Definition: buffer.c:147
#define LIBAV_LICENSE
Definition: config.h:5
enum AVCodecID codec_id
Definition: mov_chan.c:432
void ff_thread_free(AVCodecContext *avctx)
Definition: pthread.c:82
#define FFMAX(a, b)
Definition: common.h:55
av_cold void ff_me_cmp_init_static(void)
Definition: me_cmp.c:885
int av_frame_copy(AVFrame *dst, const AVFrame *src)
Copy the frame data from src to dst.
Definition: frame.c:532
int priv_data_size
Size of the private data to allocate in AVCodecInternal.hwaccel_priv_data.
Definition: avcodec.h:3028
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:979
reference-counted frame API
uint64_t channel_layout
Audio channel layout.
Definition: avcodec.h:1868
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:69
int rc_buffer_size
decoder bitstream buffer size
Definition: avcodec.h:2121
uint64_t channel_layout
Channel layout of the audio data.
Definition: frame.h:381
int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max)
Reduce a fraction.
Definition: rational.c:35
int(* encode_sub)(AVCodecContext *, uint8_t *buf, int buf_size, const struct AVSubtitle *sub)
Definition: avcodec.h:2883
common internal API header
#define FF_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
Definition: avcodec.h:531
#define FF_MAX_EXTRADATA_SIZE
Maximum size in bytes of extradata.
Definition: internal.h:128
static AVHWAccel * find_hwaccel(enum AVCodecID codec_id, enum AVPixelFormat pix_fmt)
Definition: utils.c:901
int av_image_check_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx)
Check if the given dimension of an image is valid, meaning that all bytes of the image can be address...
Definition: imgutils.c:222
static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
Definition: utils.c:332
int bit_rate
the average bitrate
Definition: avcodec.h:1114
audio channel layout utility functions
enum AVPixelFormat * pix_fmts
array of supported pixel formats, or NULL if unknown, array is terminated by -1
Definition: avcodec.h:2833
int err_recognition
Error recognition; may misdetect some more or less valid parts as errors.
Definition: avcodec.h:2422
AVPicture pict
data+linesize for the bitmap of this subtitle.
Definition: avcodec.h:3085
#define FF_THREAD_FRAME
Decode more than one frame at once.
Definition: avcodec.h:2567
#define FFMIN(a, b)
Definition: common.h:57
const uint8_t * avpriv_find_start_code(const uint8_t *restrict p, const uint8_t *end, uint32_t *restrict state)
Definition: utils.c:2406
AVBufferRef ** extended_buf
For planar audio which requires more than AV_NUM_DATA_POINTERS AVBufferRef pointers, this array will hold all the references which cannot fit into AVFrame.buf.
Definition: frame.h:407
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of PIX_FMT_YUV420P and setting color_...
Definition: pixfmt.h:77
int av_get_exact_bits_per_sample(enum AVCodecID codec_id)
Return codec bits per sample.
Definition: utils.c:2010
int channels
Definition: internal.h:55
int(* alloc_frame)(AVCodecContext *avctx, AVFrame *frame)
Allocate a custom buffer.
Definition: avcodec.h:2956
static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt)
Definition: utils.c:888
int width
picture width / height.
Definition: avcodec.h:1229
#define FF_PROFILE_UNKNOWN
Definition: avcodec.h:2639
int priv_data_size
Definition: avcodec.h:2850
int profile
Definition: avcodec.h:2801
attribute_deprecated int reference
Definition: frame.h:239
FF_ENABLE_DEPRECATION_WARNINGS int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
Set various frame properties from the codec context / packet data.
Definition: utils.c:560
#define CODEC_CAP_AUTO_THREADS
Codec supports avctx->thread_count == 0 (auto).
Definition: avcodec.h:767
enum AVColorPrimaries color_primaries
Chromaticity coordinates of the source primaries.
Definition: avcodec.h:1761
planar YUV 4:4:4 40bpp, (1 Cr & Cb sample per 1x1 Y & A samples, big-endian)
Definition: pixfmt.h:182
packed YUV 4:2:2, 16bpp, Y0 Cr Y1 Cb
Definition: pixfmt.h:202
#define FF_DEBUG_BUFFERS
Definition: avcodec.h:2403
void ff_thread_finish_setup(AVCodecContext *avctx)
If the codec defines update_thread_context(), call this when they are ready for the next thread to st...
Definition: utils.c:2373
const AVProfile * profiles
array of recognized profiles, or NULL if unknown, array is terminated by {FF_PROFILE_UNKNOWN} ...
Definition: avcodec.h:2841
int64_t reordered_opaque
opaque 64bit number (generally a PTS) that will be reordered and output in AVFrame.reordered_opaque
Definition: avcodec.h:2441
#define AV_EF_EXPLODE
Definition: avcodec.h:2433
static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
Definition: utils.c:471
int refcounted_frames
If non-zero, the decoded audio and video frames returned from avcodec_decode_video2() and avcodec_dec...
Definition: avcodec.h:2078
packed RGB 8:8:8, 24bpp, BGRBGR...
Definition: pixfmt.h:68
planar YUV 4:2:0, 15bpp, (1 Cr & Cb sample per 2x2 Y samples), big-endian
Definition: pixfmt.h:152
int mb_decision
macroblock decision mode
Definition: avcodec.h:1597
Usually treated as AVMEDIA_TYPE_DATA.
Definition: avutil.h:186
void av_log_ask_for_sample(void *avc, const char *msg,...)
Definition: utils.c:2261
Opaque data information usually sparse.
Definition: avutil.h:191
int ff_alloc_packet(AVPacket *avpkt, int size)
Check AVPacket size and/or allocate data.
Definition: utils.c:1257
enum AVPixelFormat pix_fmt
Definition: movenc.c:843
static pthread_mutex_t * mutex
Definition: w32pthreads.h:69
static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
Definition: utils.c:428
#define HAVE_THREADS
Definition: config.h:302
planar YUV 4:2:2, 18bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
Definition: pixfmt.h:161
#define AVERROR_EXPERIMENTAL
Requested feature is flagged experimental. Set strict_std_compliance if you really want to use it...
Definition: error.h:62
int thread_count
thread count is used to decide how many independent tasks should be passed to execute() ...
Definition: avcodec.h:2556
int linesize[4]
Definition: internal.h:53
void avcodec_flush_buffers(AVCodecContext *avctx)
Reset the internal decoder state / flush internal buffers.
Definition: utils.c:1999
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames...
Definition: frame.h:186
AVBufferRef * progress
Definition: thread.h:40
const char * av_get_profile_name(const AVCodec *codec, int profile)
Return a name for the specified profile, if available.
Definition: utils.c:1970
int frame_size
Number of samples per channel in an audio frame.
Definition: avcodec.h:1827
#define attribute_align_arg
Definition: internal.h:54
NULL
Definition: eval.c:55
packed RGB 3:3:2, 8bpp, (msb)2B 3G 3R(lsb)
Definition: pixfmt.h:86
static int width
Definition: utils.c:156
sample_fmt
Definition: avconv_filter.c:68
int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
The default callback for AVCodecContext.get_buffer2().
Definition: utils.c:509
int av_image_fill_pointers(uint8_t *data[4], enum AVPixelFormat pix_fmt, int height, uint8_t *ptr, const int linesizes[4])
Fill plane data pointers for an image with pixel format pix_fmt and height height.
Definition: imgutils.c:99
Libavcodec external API header.
enum AVMediaType codec_type
Definition: avcodec.h:1058
void(* init_static_data)(struct AVCodec *codec)
Initialize codec static data, called from avcodec_register().
Definition: avcodec.h:2880
int avcodec_default_reget_buffer(AVCodecContext *s, AVFrame *pic)
Definition: utils.c:857
AVSampleFormat
Audio Sample Formats.
Definition: samplefmt.h:61
This side data contains a 3x3 transformation matrix describing an affine transformation that needs to...
Definition: frame.h:84
enum AVCodecID codec_id
Definition: avcodec.h:1067
AVHWAccel.
Definition: avcodec.h:2909
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
Definition: frame.c:309
int av_opt_set_dict(void *obj, AVDictionary **options)
Definition: opt.c:679
AV_SAMPLE_FMT_NONE
Definition: avconv_filter.c:68
int sample_rate
samples per second
Definition: avcodec.h:1807
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:153
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:171
uint8_t flags
Definition: pixdesc.h:90
int debug
debug
Definition: avcodec.h:2378
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
planar GBR 4:4:4 30bpp, big-endian
Definition: pixfmt.h:166
main external API structure.
Definition: avcodec.h:1050
AVCodec * avcodec_find_decoder(enum AVCodecID id)
Find a registered decoder with a matching codec ID.
Definition: utils.c:1792
uint8_t * data
The data buffer.
Definition: buffer.h:89
int qmin
minimum quantizer
Definition: avcodec.h:2089
void avsubtitle_free(AVSubtitle *sub)
Free all allocated data in the given subtitle struct.
Definition: utils.c:1703
AVRational sample_aspect_ratio
Sample aspect ratio for the video frame, 0/1 if unknown/unspecified.
Definition: frame.h:206
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
Definition: avcodec.h:1082
packed YUV 4:2:2, 16bpp, Y0 Cb Y1 Cr
Definition: pixfmt.h:66
uint8_t * data
Definition: frame.h:104
int av_samples_copy(uint8_t **dst, uint8_t *const *src, int dst_offset, int src_offset, int nb_samples, int nb_channels, enum AVSampleFormat sample_fmt)
Copy samples from src to dst.
Definition: samplefmt.c:187
int extradata_size
Definition: avcodec.h:1165
#define AVERROR_BUG
Bug detected, please report the issue.
Definition: error.h:60
unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
Encode extradata length to a buffer.
Definition: utils.c:2228
struct AVCodec * next
Definition: avcodec.h:2851
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:71
int coded_height
Definition: avcodec.h:1244
int64_t reordered_opaque
reordered opaque 64bit (generally an integer or a double precision float PTS but can be anything)...
Definition: frame.h:352
Describe the class of an AVClass context structure.
Definition: log.h:33
int sample_rate
Sample rate of the audio data.
Definition: frame.h:376
enum AVPixelFormat(* get_format)(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
callback to negotiate the pixelFormat
Definition: avcodec.h:1317
int av_image_fill_linesizes(int linesizes[4], enum AVPixelFormat pix_fmt, int width)
Fill plane linesizes for an image with pixel format pix_fmt and width width.
Definition: imgutils.c:68
AVFrameSideData * av_frame_new_side_data(AVFrame *frame, enum AVFrameSideDataType type, int size)
Add a new side data to a frame.
Definition: frame.c:444
Y , 16bpp, big-endian.
Definition: pixfmt.h:100
void av_buffer_pool_uninit(AVBufferPool **ppool)
Mark the pool as being available for freeing.
Definition: buffer.c:230
int av_samples_get_buffer_size(int *linesize, int nb_channels, int nb_samples, enum AVSampleFormat sample_fmt, int align)
Get the required buffer size for the given audio parameters.
Definition: samplefmt.c:108
enum AVColorSpace colorspace
YUV colorspace type.
Definition: avcodec.h:1775
rational number numerator/denominator
Definition: rational.h:43
enum AVColorTransferCharacteristic color_trc
Color Transfer Characteristic.
Definition: avcodec.h:1768
void ff_thread_release_buffer(AVCodecContext *avctx, ThreadFrame *f)
Wrapper around release_buffer() frame-for multithreaded codecs.
Definition: utils.c:2367
const char * name
short name for the profile
Definition: avcodec.h:2802
void av_vlog(void *avcl, int level, const char *fmt, va_list vl)
Send the specified message to the log if the level is less than or equal to the current av_log_level...
Definition: log.c:181
AVMediaType
Definition: avutil.h:185
int(* get_buffer2)(struct AVCodecContext *s, AVFrame *frame, int flags)
This callback is called at the beginning of each frame to get data buffer(s) for it.
Definition: avcodec.h:2065
static FF_ENABLE_DEPRECATION_WARNINGS AVHWAccel * first_hwaccel
Definition: utils.c:2278
enum AVChromaLocation chroma_location
Definition: frame.h:444
int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
Initialize the AVCodecContext to use the given AVCodec.
Definition: utils.c:994
int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
Return audio frame duration.
Definition: utils.c:2073
size_t av_strlcat(char *dst, const char *src, size_t size)
Append the string src to the string dst, but to a total length of no more than size - 1 bytes...
Definition: avstring.c:91
AVHWAccel * av_hwaccel_next(const AVHWAccel *hwaccel)
If hwaccel is NULL, returns the first registered hardware accelerator, if hwaccel is non-NULL...
Definition: utils.c:2289
int64_t pkt_pts
PTS copied from the AVPacket that was decoded to produce this frame.
Definition: frame.h:216
int av_frame_get_buffer(AVFrame *frame, int align)
Allocate new buffer(s) for audio or video data.
Definition: frame.c:175
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
Definition: frame.c:283
#define EDGE_WIDTH
Definition: mpegvideo.h:78
static uint32_t state
Definition: trasher.c:27
planar YUV 4:2:2 30bpp, (1 Cr & Cb sample per 2x1 Y & A samples, little-endian)
Definition: pixfmt.h:181
AVCodec * avcodec_find_decoder_by_name(const char *name)
Find a registered decoder with the specified name.
Definition: utils.c:1797
This side data should be associated with an audio stream and contains ReplayGain information in form ...
Definition: avcodec.h:904
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: utils.c:612
const AVClass * priv_class
AVClass for the private context.
Definition: avcodec.h:2840
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:141
planar YUV 4:4:4, 27bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
Definition: pixfmt.h:157
int height
Definition: gxfenc.c:72
static int av_toupper(int c)
Locale-independent conversion of ASCII characters to uppercase.
Definition: avstring.h:172
int64_t pkt_dts
DTS copied from the AVPacket that triggered returning this frame.
Definition: frame.h:221
A reference to a data buffer.
Definition: buffer.h:81
static int op(uint8_t **dst, const uint8_t *dst_end, GetByteContext *gb, int pixel, int count, int *x, int width, int linesize)
Perform decode operation.
Definition: anm.c:76
void av_fast_malloc(void *ptr, unsigned int *size, size_t min_size)
Allocate a buffer, reusing the given one if large enough.
Definition: mem.c:388
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:65
Y , 8bpp.
Definition: pixfmt.h:73
void av_opt_free(void *obj)
Free all allocated objects in obj.
Definition: opt.c:659
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:76
common internal api header.
Free mutex resources.
Definition: avcodec.h:4403
AVBufferPool * av_buffer_pool_init(int size, AVBufferRef *(*alloc)(int size))
Allocate and initialize a buffer pool.
Definition: buffer.c:197
int avpriv_lock_avformat(void)
Definition: utils.c:2314
void av_register_hwaccel(AVHWAccel *hwaccel)
Register the hardware accelerator hwaccel.
Definition: utils.c:2280
struct AVHWAccel * next
Definition: avcodec.h:2951
planar GBR 4:4:4 27bpp, little-endian
Definition: pixfmt.h:165
int(* uninit)(AVCodecContext *avctx)
Uninitialize the hwaccel private data.
Definition: avcodec.h:3022
#define restrict
Definition: config.h:8
#define CONFIG_ME_CMP
Definition: config.h:427
void * hwaccel_priv_data
hwaccel-specific private data
Definition: internal.h:104
uint32_t start_display_time
Definition: avcodec.h:3101
AVBufferRef * av_buffer_ref(AVBufferRef *buf)
Create a new reference to an AVBuffer.
Definition: buffer.c:92
#define CODEC_CAP_EXPERIMENTAL
Codec is experimental and is thus avoided in favor of non experimental encoders.
Definition: avcodec.h:741
AVProfile.
Definition: avcodec.h:2800
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of PIX_FMT_YUV444P and setting color_...
Definition: pixfmt.h:79
enum AVCodecID id
Codec implemented by the hardware accelerator.
Definition: avcodec.h:2929
void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
Notify later decoding threads when part of their reference picture is ready.
Definition: utils.c:2377
packed RGB 3:3:2, 8bpp, (msb)2R 3G 3B(lsb)
Definition: pixfmt.h:89
#define AV_PIX_FMT_RGB555
Definition: pixfmt.h:231
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:72
void av_init_packet(AVPacket *pkt)
Initialize optional fields of a packet with default values.
Definition: avpacket.c:47
int den
denominator
Definition: rational.h:45
int avcodec_default_execute2(AVCodecContext *c, int(*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
Definition: utils.c:876
unsigned bps
Definition: movenc.c:845
void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
Definition: utils.c:1854
void * priv_data
Definition: avcodec.h:1092
FAKE codec to indicate a raw MPEG-2 TS stream (only used by libavformat)
Definition: avcodec.h:466
int av_samples_fill_arrays(uint8_t **audio_data, int *linesize, const uint8_t *buf, int nb_channels, int nb_samples, enum AVSampleFormat sample_fmt, int align)
Fill channel data pointers and linesize for samples with sample format sample_fmt.
Definition: samplefmt.c:140
void ff_thread_flush(AVCodecContext *avctx)
Wait for decoding threads to finish and reset internal state.
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:77
#define TAG_PRINT(x)
as in Berlin toast format
Definition: avcodec.h:396
int len
int channels
number of audio channels
Definition: avcodec.h:1808
const int * supported_samplerates
array of supported audio samplerates, or NULL if unknown, array is terminated by 0 ...
Definition: avcodec.h:2834
struct AVCodecInternal * internal
Private context used for internal data.
Definition: avcodec.h:1100
unsigned avcodec_version(void)
Return the LIBAVCODEC_VERSION_INT constant.
Definition: utils.c:1983
Y , 16bpp, little-endian.
Definition: pixfmt.h:101
char * ass
0 terminated ASS/SSA compatible event line.
Definition: avcodec.h:3095
static void * avformat_mutex
Definition: utils.c:57
int key_frame
1 -> keyframe, 0-> not
Definition: frame.h:191
static int get_bit_rate(AVCodecContext *ctx)
Definition: utils.c:1811
int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture, int *got_picture_ptr, AVPacket *avpkt)
Decode the video frame of size avpkt->size from avpkt->data into picture.
Definition: utils.c:1586
enum AVColorPrimaries color_primaries
Definition: frame.h:438
static const struct twinvq_data tab
void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
Wait for earlier decoding threads to finish reference pictures.
Definition: utils.c:2381
planar YUV 4:2:2 30bpp, (1 Cr & Cb sample per 2x1 Y & A samples, big-endian)
Definition: pixfmt.h:180
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Definition: avcodec.h:972
av_cold void avcodec_register(AVCodec *codec)
Register the codec codec and initialize libavcodec.
Definition: utils.c:105
int frame_number
Frame counter, set by libavcodec.
Definition: avcodec.h:1838
int height
Definition: frame.h:174
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:102
static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
Definition: utils.c:1541
enum AVColorTransferCharacteristic color_trc
Definition: frame.h:440
uint8_t * av_packet_get_side_data(AVPacket *pkt, enum AVPacketSideDataType type, int *size)
Get side information from packet.
Definition: avpacket.c:287
int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
Select the (possibly hardware accelerated) pixel format.
Definition: utils.c:914
int ff_thread_ref_frame(ThreadFrame *dst, ThreadFrame *src)
Definition: utils.c:2340
static av_always_inline int64_t ff_samples_to_time_base(AVCodecContext *avctx, int64_t samples)
Rescale from sample rate to AVCodecContext.time_base.
Definition: internal.h:151
AVBufferRef * av_buffer_pool_get(AVBufferPool *pool)
Allocate a new AVBuffer, reusing an old buffer from the pool when available.
Definition: buffer.c:285
enum AVSampleFormat * sample_fmts
array of supported sample formats, or NULL if unknown, array is terminated by -1
Definition: avcodec.h:2835
AVMatrixEncoding
int ff_thread_get_buffer(AVCodecContext *avctx, ThreadFrame *f, int flags)
Wrapper around get_buffer() for frame-multithreaded codecs.
Definition: utils.c:2361
int nb_channels
const char * av_get_pix_fmt_name(enum AVPixelFormat pix_fmt)
Return the short name for a pixel format, NULL in case pix_fmt is unknown.
Definition: pixdesc.c:1540
int avpriv_unlock_avformat(void)
Definition: utils.c:2323
ReplayGain information in the form of the AVReplayGain struct.
Definition: frame.h:76
int(* init)(AVCodecContext *)
Definition: avcodec.h:2882
uint8_t ** extended_data
pointers to the data planes/channels.
Definition: frame.h:169
int format
Definition: internal.h:50
attribute_deprecated int type
Definition: frame.h:308
packed YUV 4:1:1, 12bpp, Cb Y0 Y1 Cr Y2 Y3
Definition: pixfmt.h:85
Stereoscopic 3d metadata.
Definition: frame.h:63
AVCodecContext avctx
Definition: utils.c:540
AVPixelFormat
Pixel format.
Definition: pixfmt.h:63
This structure stores compressed data.
Definition: avcodec.h:950
int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size, const AVSubtitle *sub)
Definition: utils.c:1469
int(* encode2)(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr)
Encode data to an AVPacket.
Definition: avcodec.h:2895
#define AV_GET_BUFFER_FLAG_REF
The decoder will keep a reference to the frame and may reuse it later.
Definition: avcodec.h:850
int nb_samples
number of audio samples (per channel) described by this frame
Definition: frame.h:179
void * av_mallocz(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
Definition: mem.c:205
int strict_std_compliance
strictly follow the standard (MPEG4, ...).
Definition: avcodec.h:2357
The data is the AVMatrixEncoding enum defined in libavutil/channel_layout.h.
Definition: frame.h:67
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:966
planar YUV 4:4:4, 30bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
Definition: pixfmt.h:158
A dummy ID pointing at the start of subtitle codecs.
Definition: avcodec.h:449
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:367
#define FFMAX3(a, b, c)
Definition: common.h:56
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:228
static void compat_free_buffer(void *opaque, uint8_t *data)
Definition: utils.c:544
planar GBR 4:4:4 30bpp, little-endian
Definition: pixfmt.h:167
int avcodec_default_execute(AVCodecContext *c, int(*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
Definition: utils.c:864
void av_get_channel_layout_string(char *buf, int buf_size, int nb_channels, uint64_t channel_layout)
Return a description of a channel layout.
int last_audio_frame
An audio frame with less than required samples has been submitted and padded with silence...
Definition: internal.h:87
uint8_t * subtitle_header
Header containing style information for text subtitles.
Definition: avcodec.h:2753
FF_DISABLE_DEPRECATION_WARNINGS int avcodec_default_get_buffer(AVCodecContext *avctx, AVFrame *frame)
Definition: utils.c:534
int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx, AVFrame *frame, int *got_frame_ptr, AVPacket *avpkt)
Decode the audio frame of size avpkt->size from avpkt->data into frame.
Definition: utils.c:1642
planar YUV 4:2:2, 20bpp, (1 Cr & Cb sample per 2x1 Y samples), big-endian
Definition: pixfmt.h:154