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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 FFmpeg.
7  *
8  * FFmpeg 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  * FFmpeg 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 FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 /**
24  * @file
25  * utils.
26  */
27 
28 #include "config.h"
29 #include "libavutil/atomic.h"
30 #include "libavutil/attributes.h"
31 #include "libavutil/avassert.h"
32 #include "libavutil/avstring.h"
33 #include "libavutil/bprint.h"
35 #include "libavutil/crc.h"
36 #include "libavutil/frame.h"
37 #include "libavutil/hwcontext.h"
38 #include "libavutil/internal.h"
39 #include "libavutil/mathematics.h"
40 #include "libavutil/mem_internal.h"
41 #include "libavutil/pixdesc.h"
42 #include "libavutil/imgutils.h"
43 #include "libavutil/samplefmt.h"
44 #include "libavutil/dict.h"
45 #include "libavutil/thread.h"
46 #include "avcodec.h"
47 #include "libavutil/opt.h"
48 #include "me_cmp.h"
49 #include "mpegvideo.h"
50 #include "thread.h"
51 #include "frame_thread_encoder.h"
52 #include "internal.h"
53 #include "raw.h"
54 #include "bytestream.h"
55 #include "version.h"
56 #include <stdlib.h>
57 #include <stdarg.h>
58 #include <limits.h>
59 #include <float.h>
60 #if CONFIG_ICONV
61 # include <iconv.h>
62 #endif
63 
64 #include "libavutil/ffversion.h"
65 const char av_codec_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
66 
67 #if HAVE_PTHREADS || HAVE_W32THREADS || HAVE_OS2THREADS
68 static int default_lockmgr_cb(void **arg, enum AVLockOp op)
69 {
70  void * volatile * mutex = arg;
71  int err;
72 
73  switch (op) {
74  case AV_LOCK_CREATE:
75  return 0;
76  case AV_LOCK_OBTAIN:
77  if (!*mutex) {
79  if (!tmp)
80  return AVERROR(ENOMEM);
81  if ((err = pthread_mutex_init(tmp, NULL))) {
82  av_free(tmp);
83  return AVERROR(err);
84  }
85  if (avpriv_atomic_ptr_cas(mutex, NULL, tmp)) {
87  av_free(tmp);
88  }
89  }
90 
91  if ((err = pthread_mutex_lock(*mutex)))
92  return AVERROR(err);
93 
94  return 0;
95  case AV_LOCK_RELEASE:
96  if ((err = pthread_mutex_unlock(*mutex)))
97  return AVERROR(err);
98 
99  return 0;
100  case AV_LOCK_DESTROY:
101  if (*mutex)
102  pthread_mutex_destroy(*mutex);
103  av_free(*mutex);
104  avpriv_atomic_ptr_cas(mutex, *mutex, NULL);
105  return 0;
106  }
107  return 1;
108 }
109 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = default_lockmgr_cb;
110 #else
111 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = NULL;
112 #endif
113 
114 
115 volatile int ff_avcodec_locked;
116 static int volatile entangled_thread_counter = 0;
117 static void *codec_mutex;
118 static void *avformat_mutex;
119 
120 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
121 {
122  uint8_t **p = ptr;
123  if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
124  av_freep(p);
125  *size = 0;
126  return;
127  }
128  if (!ff_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE, 1))
129  memset(*p + min_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
130 }
131 
132 void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size)
133 {
134  uint8_t **p = ptr;
135  if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
136  av_freep(p);
137  *size = 0;
138  return;
139  }
140  if (!ff_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE, 1))
141  memset(*p, 0, min_size + AV_INPUT_BUFFER_PADDING_SIZE);
142 }
143 
144 /* encoder management */
147 
149 {
150  if (c)
151  return c->next;
152  else
153  return first_avcodec;
154 }
155 
156 static av_cold void avcodec_init(void)
157 {
158  static int initialized = 0;
159 
160  if (initialized != 0)
161  return;
162  initialized = 1;
163 
164  if (CONFIG_ME_CMP)
166 }
167 
168 int av_codec_is_encoder(const AVCodec *codec)
169 {
170  return codec && (codec->encode_sub || codec->encode2 ||codec->send_frame);
171 }
172 
173 int av_codec_is_decoder(const AVCodec *codec)
174 {
175  return codec && (codec->decode || codec->send_packet);
176 }
177 
179 {
180  AVCodec **p;
181  avcodec_init();
182  p = last_avcodec;
183  codec->next = NULL;
184 
185  while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, codec))
186  p = &(*p)->next;
187  last_avcodec = &codec->next;
188 
189  if (codec->init_static_data)
190  codec->init_static_data(codec);
191 }
192 
193 #if FF_API_EMU_EDGE
195 {
196  return EDGE_WIDTH;
197 }
198 #endif
199 
200 #if FF_API_SET_DIMENSIONS
202 {
203  int ret = ff_set_dimensions(s, width, height);
204  if (ret < 0) {
205  av_log(s, AV_LOG_WARNING, "Failed to set dimensions %d %d\n", width, height);
206  }
207 }
208 #endif
209 
211 {
212  int ret = av_image_check_size2(width, height, s->max_pixels, AV_PIX_FMT_NONE, 0, s);
213 
214  if (ret < 0)
215  width = height = 0;
216 
217  s->coded_width = width;
218  s->coded_height = height;
219  s->width = AV_CEIL_RSHIFT(width, s->lowres);
220  s->height = AV_CEIL_RSHIFT(height, s->lowres);
221 
222  return ret;
223 }
224 
226 {
227  int ret = av_image_check_sar(avctx->width, avctx->height, sar);
228 
229  if (ret < 0) {
230  av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %d/%d\n",
231  sar.num, sar.den);
232  avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
233  return ret;
234  } else {
235  avctx->sample_aspect_ratio = sar;
236  }
237  return 0;
238 }
239 
241  enum AVMatrixEncoding matrix_encoding)
242 {
243  AVFrameSideData *side_data;
244  enum AVMatrixEncoding *data;
245 
247  if (!side_data)
249  sizeof(enum AVMatrixEncoding));
250 
251  if (!side_data)
252  return AVERROR(ENOMEM);
253 
254  data = (enum AVMatrixEncoding*)side_data->data;
255  *data = matrix_encoding;
256 
257  return 0;
258 }
259 
261  int linesize_align[AV_NUM_DATA_POINTERS])
262 {
263  int i;
264  int w_align = 1;
265  int h_align = 1;
267 
268  if (desc) {
269  w_align = 1 << desc->log2_chroma_w;
270  h_align = 1 << desc->log2_chroma_h;
271  }
272 
273  switch (s->pix_fmt) {
274  case AV_PIX_FMT_YUV420P:
275  case AV_PIX_FMT_YUYV422:
276  case AV_PIX_FMT_YVYU422:
277  case AV_PIX_FMT_UYVY422:
278  case AV_PIX_FMT_YUV422P:
279  case AV_PIX_FMT_YUV440P:
280  case AV_PIX_FMT_YUV444P:
281  case AV_PIX_FMT_GBRP:
282  case AV_PIX_FMT_GBRAP:
283  case AV_PIX_FMT_GRAY8:
284  case AV_PIX_FMT_GRAY16BE:
285  case AV_PIX_FMT_GRAY16LE:
286  case AV_PIX_FMT_YUVJ420P:
287  case AV_PIX_FMT_YUVJ422P:
288  case AV_PIX_FMT_YUVJ440P:
289  case AV_PIX_FMT_YUVJ444P:
290  case AV_PIX_FMT_YUVA420P:
291  case AV_PIX_FMT_YUVA422P:
292  case AV_PIX_FMT_YUVA444P:
345  case AV_PIX_FMT_GBRP9LE:
346  case AV_PIX_FMT_GBRP9BE:
347  case AV_PIX_FMT_GBRP10LE:
348  case AV_PIX_FMT_GBRP10BE:
349  case AV_PIX_FMT_GBRP12LE:
350  case AV_PIX_FMT_GBRP12BE:
351  case AV_PIX_FMT_GBRP14LE:
352  case AV_PIX_FMT_GBRP14BE:
353  case AV_PIX_FMT_GBRP16LE:
354  case AV_PIX_FMT_GBRP16BE:
359  w_align = 16; //FIXME assume 16 pixel per macroblock
360  h_align = 16 * 2; // interlaced needs 2 macroblocks height
361  break;
362  case AV_PIX_FMT_YUV411P:
363  case AV_PIX_FMT_YUVJ411P:
365  w_align = 32;
366  h_align = 16 * 2;
367  break;
368  case AV_PIX_FMT_YUV410P:
369  if (s->codec_id == AV_CODEC_ID_SVQ1) {
370  w_align = 64;
371  h_align = 64;
372  }
373  break;
374  case AV_PIX_FMT_RGB555:
375  if (s->codec_id == AV_CODEC_ID_RPZA) {
376  w_align = 4;
377  h_align = 4;
378  }
379  break;
380  case AV_PIX_FMT_PAL8:
381  case AV_PIX_FMT_BGR8:
382  case AV_PIX_FMT_RGB8:
383  if (s->codec_id == AV_CODEC_ID_SMC ||
385  w_align = 4;
386  h_align = 4;
387  }
388  if (s->codec_id == AV_CODEC_ID_JV) {
389  w_align = 8;
390  h_align = 8;
391  }
392  break;
393  case AV_PIX_FMT_BGR24:
394  if ((s->codec_id == AV_CODEC_ID_MSZH) ||
395  (s->codec_id == AV_CODEC_ID_ZLIB)) {
396  w_align = 4;
397  h_align = 4;
398  }
399  break;
400  case AV_PIX_FMT_RGB24:
401  if (s->codec_id == AV_CODEC_ID_CINEPAK) {
402  w_align = 4;
403  h_align = 4;
404  }
405  break;
406  default:
407  break;
408  }
409 
410  if (s->codec_id == AV_CODEC_ID_IFF_ILBM) {
411  w_align = FFMAX(w_align, 8);
412  }
413 
414  *width = FFALIGN(*width, w_align);
415  *height = FFALIGN(*height, h_align);
416  if (s->codec_id == AV_CODEC_ID_H264 || s->lowres) {
417  // some of the optimized chroma MC reads one line too much
418  // which is also done in mpeg decoders with lowres > 0
419  *height += 2;
420 
421  // H.264 uses edge emulation for out of frame motion vectors, for this
422  // it requires a temporary area large enough to hold a 21x21 block,
423  // increasing witdth ensure that the temporary area is large enough,
424  // the next rounded up width is 32
425  *width = FFMAX(*width, 32);
426  }
427 
428  for (i = 0; i < 4; i++)
429  linesize_align[i] = STRIDE_ALIGN;
430 }
431 
433 {
435  int chroma_shift = desc->log2_chroma_w;
436  int linesize_align[AV_NUM_DATA_POINTERS];
437  int align;
438 
439  avcodec_align_dimensions2(s, width, height, linesize_align);
440  align = FFMAX(linesize_align[0], linesize_align[3]);
441  linesize_align[1] <<= chroma_shift;
442  linesize_align[2] <<= chroma_shift;
443  align = FFMAX3(align, linesize_align[1], linesize_align[2]);
444  *width = FFALIGN(*width, align);
445 }
446 
447 int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
448 {
449  if (pos <= AVCHROMA_LOC_UNSPECIFIED || pos >= AVCHROMA_LOC_NB)
450  return AVERROR(EINVAL);
451  pos--;
452 
453  *xpos = (pos&1) * 128;
454  *ypos = ((pos>>1)^(pos<4)) * 128;
455 
456  return 0;
457 }
458 
460 {
461  int pos, xout, yout;
462 
463  for (pos = AVCHROMA_LOC_UNSPECIFIED + 1; pos < AVCHROMA_LOC_NB; pos++) {
464  if (avcodec_enum_to_chroma_pos(&xout, &yout, pos) == 0 && xout == xpos && yout == ypos)
465  return pos;
466  }
468 }
469 
471  enum AVSampleFormat sample_fmt, const uint8_t *buf,
472  int buf_size, int align)
473 {
474  int ch, planar, needed_size, ret = 0;
475 
476  needed_size = av_samples_get_buffer_size(NULL, nb_channels,
477  frame->nb_samples, sample_fmt,
478  align);
479  if (buf_size < needed_size)
480  return AVERROR(EINVAL);
481 
482  planar = av_sample_fmt_is_planar(sample_fmt);
483  if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
484  if (!(frame->extended_data = av_mallocz_array(nb_channels,
485  sizeof(*frame->extended_data))))
486  return AVERROR(ENOMEM);
487  } else {
488  frame->extended_data = frame->data;
489  }
490 
491  if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
492  (uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
493  sample_fmt, align)) < 0) {
494  if (frame->extended_data != frame->data)
495  av_freep(&frame->extended_data);
496  return ret;
497  }
498  if (frame->extended_data != frame->data) {
499  for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
500  frame->data[ch] = frame->extended_data[ch];
501  }
502 
503  return ret;
504 }
505 
507 {
508  FramePool *pool = avctx->internal->pool;
509  int i, ret;
510 
511  switch (avctx->codec_type) {
512  case AVMEDIA_TYPE_VIDEO: {
513  uint8_t *data[4];
514  int linesize[4];
515  int size[4] = { 0 };
516  int w = frame->width;
517  int h = frame->height;
518  int tmpsize, unaligned;
519 
520  if (pool->format == frame->format &&
521  pool->width == frame->width && pool->height == frame->height)
522  return 0;
523 
524  avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
525 
526  do {
527  // NOTE: do not align linesizes individually, this breaks e.g. assumptions
528  // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
529  ret = av_image_fill_linesizes(linesize, avctx->pix_fmt, w);
530  if (ret < 0)
531  return ret;
532  // increase alignment of w for next try (rhs gives the lowest bit set in w)
533  w += w & ~(w - 1);
534 
535  unaligned = 0;
536  for (i = 0; i < 4; i++)
537  unaligned |= linesize[i] % pool->stride_align[i];
538  } while (unaligned);
539 
540  tmpsize = av_image_fill_pointers(data, avctx->pix_fmt, h,
541  NULL, linesize);
542  if (tmpsize < 0)
543  return -1;
544 
545  for (i = 0; i < 3 && data[i + 1]; i++)
546  size[i] = data[i + 1] - data[i];
547  size[i] = tmpsize - (data[i] - data[0]);
548 
549  for (i = 0; i < 4; i++) {
550  av_buffer_pool_uninit(&pool->pools[i]);
551  pool->linesize[i] = linesize[i];
552  if (size[i]) {
553  pool->pools[i] = av_buffer_pool_init(size[i] + 16 + STRIDE_ALIGN - 1,
554  CONFIG_MEMORY_POISONING ?
555  NULL :
557  if (!pool->pools[i]) {
558  ret = AVERROR(ENOMEM);
559  goto fail;
560  }
561  }
562  }
563  pool->format = frame->format;
564  pool->width = frame->width;
565  pool->height = frame->height;
566 
567  break;
568  }
569  case AVMEDIA_TYPE_AUDIO: {
570  int ch = av_frame_get_channels(frame); //av_get_channel_layout_nb_channels(frame->channel_layout);
571  int planar = av_sample_fmt_is_planar(frame->format);
572  int planes = planar ? ch : 1;
573 
574  if (pool->format == frame->format && pool->planes == planes &&
575  pool->channels == ch && frame->nb_samples == pool->samples)
576  return 0;
577 
578  av_buffer_pool_uninit(&pool->pools[0]);
579  ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
580  frame->nb_samples, frame->format, 0);
581  if (ret < 0)
582  goto fail;
583 
584  pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
585  if (!pool->pools[0]) {
586  ret = AVERROR(ENOMEM);
587  goto fail;
588  }
589 
590  pool->format = frame->format;
591  pool->planes = planes;
592  pool->channels = ch;
593  pool->samples = frame->nb_samples;
594  break;
595  }
596  default: av_assert0(0);
597  }
598  return 0;
599 fail:
600  for (i = 0; i < 4; i++)
601  av_buffer_pool_uninit(&pool->pools[i]);
602  pool->format = -1;
603  pool->planes = pool->channels = pool->samples = 0;
604  pool->width = pool->height = 0;
605  return ret;
606 }
607 
609 {
610  FramePool *pool = avctx->internal->pool;
611  int planes = pool->planes;
612  int i;
613 
614  frame->linesize[0] = pool->linesize[0];
615 
616  if (planes > AV_NUM_DATA_POINTERS) {
617  frame->extended_data = av_mallocz_array(planes, sizeof(*frame->extended_data));
618  frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
620  sizeof(*frame->extended_buf));
621  if (!frame->extended_data || !frame->extended_buf) {
622  av_freep(&frame->extended_data);
623  av_freep(&frame->extended_buf);
624  return AVERROR(ENOMEM);
625  }
626  } else {
627  frame->extended_data = frame->data;
628  av_assert0(frame->nb_extended_buf == 0);
629  }
630 
631  for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
632  frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
633  if (!frame->buf[i])
634  goto fail;
635  frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
636  }
637  for (i = 0; i < frame->nb_extended_buf; i++) {
638  frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
639  if (!frame->extended_buf[i])
640  goto fail;
641  frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
642  }
643 
644  if (avctx->debug & FF_DEBUG_BUFFERS)
645  av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
646 
647  return 0;
648 fail:
649  av_frame_unref(frame);
650  return AVERROR(ENOMEM);
651 }
652 
654 {
655  FramePool *pool = s->internal->pool;
657  int i;
658 
659  if (pic->data[0] || pic->data[1] || pic->data[2] || pic->data[3]) {
660  av_log(s, AV_LOG_ERROR, "pic->data[*]!=NULL in avcodec_default_get_buffer\n");
661  return -1;
662  }
663 
664  if (!desc) {
665  av_log(s, AV_LOG_ERROR,
666  "Unable to get pixel format descriptor for format %s\n",
668  return AVERROR(EINVAL);
669  }
670 
671  memset(pic->data, 0, sizeof(pic->data));
672  pic->extended_data = pic->data;
673 
674  for (i = 0; i < 4 && pool->pools[i]; i++) {
675  pic->linesize[i] = pool->linesize[i];
676 
677  pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
678  if (!pic->buf[i])
679  goto fail;
680 
681  pic->data[i] = pic->buf[i]->data;
682  }
683  for (; i < AV_NUM_DATA_POINTERS; i++) {
684  pic->data[i] = NULL;
685  pic->linesize[i] = 0;
686  }
687  if (desc->flags & AV_PIX_FMT_FLAG_PAL ||
689  avpriv_set_systematic_pal2((uint32_t *)pic->data[1], pic->format);
690 
691  if (s->debug & FF_DEBUG_BUFFERS)
692  av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
693 
694  return 0;
695 fail:
696  av_frame_unref(pic);
697  return AVERROR(ENOMEM);
698 }
699 
700 void ff_color_frame(AVFrame *frame, const int c[4])
701 {
703  int p, y, x;
704 
706 
707  for (p = 0; p<desc->nb_components; p++) {
708  uint8_t *dst = frame->data[p];
709  int is_chroma = p == 1 || p == 2;
710  int bytes = is_chroma ? AV_CEIL_RSHIFT(frame->width, desc->log2_chroma_w) : frame->width;
711  int height = is_chroma ? AV_CEIL_RSHIFT(frame->height, desc->log2_chroma_h) : frame->height;
712  for (y = 0; y < height; y++) {
713  if (desc->comp[0].depth >= 9) {
714  for (x = 0; x<bytes; x++)
715  ((uint16_t*)dst)[x] = c[p];
716  }else
717  memset(dst, c[p], bytes);
718  dst += frame->linesize[p];
719  }
720  }
721 }
722 
724 {
725  int ret;
726 
727  if (avctx->hw_frames_ctx)
728  return av_hwframe_get_buffer(avctx->hw_frames_ctx, frame, 0);
729 
730  if ((ret = update_frame_pool(avctx, frame)) < 0)
731  return ret;
732 
733  switch (avctx->codec_type) {
734  case AVMEDIA_TYPE_VIDEO:
735  return video_get_buffer(avctx, frame);
736  case AVMEDIA_TYPE_AUDIO:
737  return audio_get_buffer(avctx, frame);
738  default:
739  return -1;
740  }
741 }
742 
744 {
745  int size;
746  const uint8_t *side_metadata;
747 
748  AVDictionary **frame_md = avpriv_frame_get_metadatap(frame);
749 
750  side_metadata = av_packet_get_side_data(avpkt,
752  return av_packet_unpack_dictionary(side_metadata, size, frame_md);
753 }
754 
756 {
757  AVPacket *pkt = avctx->internal->pkt;
758  int i;
759  static const struct {
760  enum AVPacketSideDataType packet;
762  } sd[] = {
769  };
770 
771  if (pkt) {
772  frame->pts = pkt->pts;
773 #if FF_API_PKT_PTS
775  frame->pkt_pts = pkt->pts;
777 #endif
778  av_frame_set_pkt_pos (frame, pkt->pos);
779  av_frame_set_pkt_duration(frame, pkt->duration);
780  av_frame_set_pkt_size (frame, pkt->size);
781 
782  for (i = 0; i < FF_ARRAY_ELEMS(sd); i++) {
783  int size;
784  uint8_t *packet_sd = av_packet_get_side_data(pkt, sd[i].packet, &size);
785  if (packet_sd) {
786  AVFrameSideData *frame_sd = av_frame_new_side_data(frame,
787  sd[i].frame,
788  size);
789  if (!frame_sd)
790  return AVERROR(ENOMEM);
791 
792  memcpy(frame_sd->data, packet_sd, size);
793  }
794  }
795  add_metadata_from_side_data(pkt, frame);
796 
797  if (pkt->flags & AV_PKT_FLAG_DISCARD) {
798  frame->flags |= AV_FRAME_FLAG_DISCARD;
799  } else {
800  frame->flags = (frame->flags & ~AV_FRAME_FLAG_DISCARD);
801  }
802  } else {
803  frame->pts = AV_NOPTS_VALUE;
804 #if FF_API_PKT_PTS
806  frame->pkt_pts = AV_NOPTS_VALUE;
808 #endif
809  av_frame_set_pkt_pos (frame, -1);
810  av_frame_set_pkt_duration(frame, 0);
811  av_frame_set_pkt_size (frame, -1);
812  }
813  frame->reordered_opaque = avctx->reordered_opaque;
814 
816  frame->color_primaries = avctx->color_primaries;
817  if (frame->color_trc == AVCOL_TRC_UNSPECIFIED)
818  frame->color_trc = avctx->color_trc;
820  av_frame_set_colorspace(frame, avctx->colorspace);
822  av_frame_set_color_range(frame, avctx->color_range);
824  frame->chroma_location = avctx->chroma_sample_location;
825 
826  switch (avctx->codec->type) {
827  case AVMEDIA_TYPE_VIDEO:
828  frame->format = avctx->pix_fmt;
829  if (!frame->sample_aspect_ratio.num)
831 
832  if (frame->width && frame->height &&
833  av_image_check_sar(frame->width, frame->height,
834  frame->sample_aspect_ratio) < 0) {
835  av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
836  frame->sample_aspect_ratio.num,
837  frame->sample_aspect_ratio.den);
838  frame->sample_aspect_ratio = (AVRational){ 0, 1 };
839  }
840 
841  break;
842  case AVMEDIA_TYPE_AUDIO:
843  if (!frame->sample_rate)
844  frame->sample_rate = avctx->sample_rate;
845  if (frame->format < 0)
846  frame->format = avctx->sample_fmt;
847  if (!frame->channel_layout) {
848  if (avctx->channel_layout) {
850  avctx->channels) {
851  av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
852  "configuration.\n");
853  return AVERROR(EINVAL);
854  }
855 
856  frame->channel_layout = avctx->channel_layout;
857  } else {
858  if (avctx->channels > FF_SANE_NB_CHANNELS) {
859  av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
860  avctx->channels);
861  return AVERROR(ENOSYS);
862  }
863  }
864  }
865  av_frame_set_channels(frame, avctx->channels);
866  break;
867  }
868  return 0;
869 }
870 
872 {
873  return ff_init_buffer_info(avctx, frame);
874 }
875 
877 {
878  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
879  int i;
880  int num_planes = av_pix_fmt_count_planes(frame->format);
882  int flags = desc ? desc->flags : 0;
883  if (num_planes == 1 && (flags & AV_PIX_FMT_FLAG_PAL))
884  num_planes = 2;
885  for (i = 0; i < num_planes; i++) {
886  av_assert0(frame->data[i]);
887  }
888  // For now do not enforce anything for palette of pseudopal formats
889  if (num_planes == 1 && (flags & AV_PIX_FMT_FLAG_PSEUDOPAL))
890  num_planes = 2;
891  // For formats without data like hwaccel allow unused pointers to be non-NULL.
892  for (i = num_planes; num_planes > 0 && i < FF_ARRAY_ELEMS(frame->data); i++) {
893  if (frame->data[i])
894  av_log(avctx, AV_LOG_ERROR, "Buffer returned by get_buffer2() did not zero unused plane pointers\n");
895  frame->data[i] = NULL;
896  }
897  }
898 }
899 
901 {
902  const AVHWAccel *hwaccel = avctx->hwaccel;
903  int override_dimensions = 1;
904  int ret;
905 
906  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
907  if ((ret = av_image_check_size2(avctx->width, avctx->height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx)) < 0 || avctx->pix_fmt<0) {
908  av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
909  return AVERROR(EINVAL);
910  }
911 
912  if (frame->width <= 0 || frame->height <= 0) {
913  frame->width = FFMAX(avctx->width, AV_CEIL_RSHIFT(avctx->coded_width, avctx->lowres));
914  frame->height = FFMAX(avctx->height, AV_CEIL_RSHIFT(avctx->coded_height, avctx->lowres));
915  override_dimensions = 0;
916  }
917 
918  if (frame->data[0] || frame->data[1] || frame->data[2] || frame->data[3]) {
919  av_log(avctx, AV_LOG_ERROR, "pic->data[*]!=NULL in get_buffer_internal\n");
920  return AVERROR(EINVAL);
921  }
922  }
923  ret = ff_decode_frame_props(avctx, frame);
924  if (ret < 0)
925  return ret;
926 
927  if (hwaccel) {
928  if (hwaccel->alloc_frame) {
929  ret = hwaccel->alloc_frame(avctx, frame);
930  goto end;
931  }
932  } else
933  avctx->sw_pix_fmt = avctx->pix_fmt;
934 
935  ret = avctx->get_buffer2(avctx, frame, flags);
936  if (ret >= 0)
937  validate_avframe_allocation(avctx, frame);
938 
939 end:
940  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions) {
941  frame->width = avctx->width;
942  frame->height = avctx->height;
943  }
944 
945  return ret;
946 }
947 
949 {
950  int ret = get_buffer_internal(avctx, frame, flags);
951  if (ret < 0) {
952  av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
953  frame->width = frame->height = 0;
954  }
955  return ret;
956 }
957 
959 {
960  AVFrame *tmp;
961  int ret;
962 
964 
965  if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
966  av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
967  frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt));
968  av_frame_unref(frame);
969  }
970 
971  ff_init_buffer_info(avctx, frame);
972 
973  if (!frame->data[0])
974  return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
975 
976  if (av_frame_is_writable(frame))
977  return ff_decode_frame_props(avctx, frame);
978 
979  tmp = av_frame_alloc();
980  if (!tmp)
981  return AVERROR(ENOMEM);
982 
983  av_frame_move_ref(tmp, frame);
984 
985  ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
986  if (ret < 0) {
987  av_frame_free(&tmp);
988  return ret;
989  }
990 
991  av_frame_copy(frame, tmp);
992  av_frame_free(&tmp);
993 
994  return 0;
995 }
996 
998 {
999  int ret = reget_buffer_internal(avctx, frame);
1000  if (ret < 0)
1001  av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
1002  return ret;
1003 }
1004 
1005 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
1006 {
1007  int i;
1008 
1009  for (i = 0; i < count; i++) {
1010  int r = func(c, (char *)arg + i * size);
1011  if (ret)
1012  ret[i] = r;
1013  }
1014  emms_c();
1015  return 0;
1016 }
1017 
1018 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
1019 {
1020  int i;
1021 
1022  for (i = 0; i < count; i++) {
1023  int r = func(c, arg, i, 0);
1024  if (ret)
1025  ret[i] = r;
1026  }
1027  emms_c();
1028  return 0;
1029 }
1030 
1032  unsigned int fourcc)
1033 {
1034  while (tags->pix_fmt >= 0) {
1035  if (tags->fourcc == fourcc)
1036  return tags->pix_fmt;
1037  tags++;
1038  }
1039  return AV_PIX_FMT_NONE;
1040 }
1041 
1043 {
1044  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
1045  return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
1046 }
1047 
1049 {
1050  while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
1051  ++fmt;
1052  return fmt[0];
1053 }
1054 
1056  enum AVPixelFormat pix_fmt)
1057 {
1058  AVHWAccel *hwaccel = NULL;
1059 
1060  while ((hwaccel = av_hwaccel_next(hwaccel)))
1061  if (hwaccel->id == codec_id
1062  && hwaccel->pix_fmt == pix_fmt)
1063  return hwaccel;
1064  return NULL;
1065 }
1066 
1067 static int setup_hwaccel(AVCodecContext *avctx,
1068  const enum AVPixelFormat fmt,
1069  const char *name)
1070 {
1071  AVHWAccel *hwa = find_hwaccel(avctx->codec_id, fmt);
1072  int ret = 0;
1073 
1074  if (avctx->active_thread_type & FF_THREAD_FRAME) {
1075  av_log(avctx, AV_LOG_WARNING,
1076  "Hardware accelerated decoding with frame threading is known to be unstable and its use is discouraged.\n");
1077  }
1078 
1079  if (!hwa) {
1080  av_log(avctx, AV_LOG_ERROR,
1081  "Could not find an AVHWAccel for the pixel format: %s",
1082  name);
1083  return AVERROR(ENOENT);
1084  }
1085 
1088  av_log(avctx, AV_LOG_WARNING, "Ignoring experimental hwaccel: %s\n",
1089  hwa->name);
1090  return AVERROR_PATCHWELCOME;
1091  }
1092 
1093  if (hwa->priv_data_size) {
1095  if (!avctx->internal->hwaccel_priv_data)
1096  return AVERROR(ENOMEM);
1097  }
1098 
1099  if (hwa->init) {
1100  ret = hwa->init(avctx);
1101  if (ret < 0) {
1103  return ret;
1104  }
1105  }
1106 
1107  avctx->hwaccel = hwa;
1108 
1109  return 0;
1110 }
1111 
1113 {
1114  const AVPixFmtDescriptor *desc;
1115  enum AVPixelFormat *choices;
1116  enum AVPixelFormat ret;
1117  unsigned n = 0;
1118 
1119  while (fmt[n] != AV_PIX_FMT_NONE)
1120  ++n;
1121 
1122  av_assert0(n >= 1);
1123  avctx->sw_pix_fmt = fmt[n - 1];
1125 
1126  choices = av_malloc_array(n + 1, sizeof(*choices));
1127  if (!choices)
1128  return AV_PIX_FMT_NONE;
1129 
1130  memcpy(choices, fmt, (n + 1) * sizeof(*choices));
1131 
1132  for (;;) {
1133  if (avctx->hwaccel && avctx->hwaccel->uninit)
1134  avctx->hwaccel->uninit(avctx);
1136  avctx->hwaccel = NULL;
1137 
1138  av_buffer_unref(&avctx->hw_frames_ctx);
1139 
1140  ret = avctx->get_format(avctx, choices);
1141 
1142  desc = av_pix_fmt_desc_get(ret);
1143  if (!desc) {
1144  ret = AV_PIX_FMT_NONE;
1145  break;
1146  }
1147 
1148  if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
1149  break;
1150 #if FF_API_CAP_VDPAU
1152  break;
1153 #endif
1154 
1155  if (avctx->hw_frames_ctx) {
1156  AVHWFramesContext *hw_frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
1157  if (hw_frames_ctx->format != ret) {
1158  av_log(avctx, AV_LOG_ERROR, "Format returned from get_buffer() "
1159  "does not match the format of provided AVHWFramesContext\n");
1160  ret = AV_PIX_FMT_NONE;
1161  break;
1162  }
1163  }
1164 
1165  if (!setup_hwaccel(avctx, ret, desc->name))
1166  break;
1167 
1168  /* Remove failed hwaccel from choices */
1169  for (n = 0; choices[n] != ret; n++)
1170  av_assert0(choices[n] != AV_PIX_FMT_NONE);
1171 
1172  do
1173  choices[n] = choices[n + 1];
1174  while (choices[n++] != AV_PIX_FMT_NONE);
1175  }
1176 
1177  av_freep(&choices);
1178  return ret;
1179 }
1180 
1181 MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
1182 MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor)
1183 MAKE_ACCESSORS(AVCodecContext, codec, int, lowres)
1184 MAKE_ACCESSORS(AVCodecContext, codec, int, seek_preroll)
1185 MAKE_ACCESSORS(AVCodecContext, codec, uint16_t*, chroma_intra_matrix)
1186 
1187 unsigned av_codec_get_codec_properties(const AVCodecContext *codec)
1188 {
1189  return codec->properties;
1190 }
1191 
1193 {
1194  return codec->max_lowres;
1195 }
1196 
1199 }
1200 
1202 {
1203  memset(sub, 0, sizeof(*sub));
1204  sub->pts = AV_NOPTS_VALUE;
1205 }
1206 
1208 {
1209  int64_t bit_rate;
1210  int bits_per_sample;
1211 
1212  switch (ctx->codec_type) {
1213  case AVMEDIA_TYPE_VIDEO:
1214  case AVMEDIA_TYPE_DATA:
1215  case AVMEDIA_TYPE_SUBTITLE:
1217  bit_rate = ctx->bit_rate;
1218  break;
1219  case AVMEDIA_TYPE_AUDIO:
1220  bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1221  bit_rate = bits_per_sample ? ctx->sample_rate * (int64_t)ctx->channels * bits_per_sample : ctx->bit_rate;
1222  break;
1223  default:
1224  bit_rate = 0;
1225  break;
1226  }
1227  return bit_rate;
1228 }
1229 
1230 int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1231 {
1232  int ret = 0;
1233 
1234  ff_unlock_avcodec(codec);
1235 
1236  ret = avcodec_open2(avctx, codec, options);
1237 
1238  ff_lock_avcodec(avctx, codec);
1239  return ret;
1240 }
1241 
1242 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1243 {
1244  int ret = 0;
1245  AVDictionary *tmp = NULL;
1246  const AVPixFmtDescriptor *pixdesc;
1247 
1248  if (avcodec_is_open(avctx))
1249  return 0;
1250 
1251  if ((!codec && !avctx->codec)) {
1252  av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
1253  return AVERROR(EINVAL);
1254  }
1255  if ((codec && avctx->codec && codec != avctx->codec)) {
1256  av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
1257  "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
1258  return AVERROR(EINVAL);
1259  }
1260  if (!codec)
1261  codec = avctx->codec;
1262 
1263  if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
1264  return AVERROR(EINVAL);
1265 
1266  if (options)
1267  av_dict_copy(&tmp, *options, 0);
1268 
1269  ret = ff_lock_avcodec(avctx, codec);
1270  if (ret < 0)
1271  return ret;
1272 
1273  avctx->internal = av_mallocz(sizeof(AVCodecInternal));
1274  if (!avctx->internal) {
1275  ret = AVERROR(ENOMEM);
1276  goto end;
1277  }
1278 
1279  avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
1280  if (!avctx->internal->pool) {
1281  ret = AVERROR(ENOMEM);
1282  goto free_and_end;
1283  }
1284 
1285  avctx->internal->to_free = av_frame_alloc();
1286  if (!avctx->internal->to_free) {
1287  ret = AVERROR(ENOMEM);
1288  goto free_and_end;
1289  }
1290 
1291  avctx->internal->buffer_frame = av_frame_alloc();
1292  if (!avctx->internal->buffer_frame) {
1293  ret = AVERROR(ENOMEM);
1294  goto free_and_end;
1295  }
1296 
1297  avctx->internal->buffer_pkt = av_packet_alloc();
1298  if (!avctx->internal->buffer_pkt) {
1299  ret = AVERROR(ENOMEM);
1300  goto free_and_end;
1301  }
1302 
1303  if (codec->priv_data_size > 0) {
1304  if (!avctx->priv_data) {
1305  avctx->priv_data = av_mallocz(codec->priv_data_size);
1306  if (!avctx->priv_data) {
1307  ret = AVERROR(ENOMEM);
1308  goto end;
1309  }
1310  if (codec->priv_class) {
1311  *(const AVClass **)avctx->priv_data = codec->priv_class;
1313  }
1314  }
1315  if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
1316  goto free_and_end;
1317  } else {
1318  avctx->priv_data = NULL;
1319  }
1320  if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
1321  goto free_and_end;
1322 
1323  if (avctx->codec_whitelist && av_match_list(codec->name, avctx->codec_whitelist, ',') <= 0) {
1324  av_log(avctx, AV_LOG_ERROR, "Codec (%s) not on whitelist \'%s\'\n", codec->name, avctx->codec_whitelist);
1325  ret = AVERROR(EINVAL);
1326  goto free_and_end;
1327  }
1328 
1329  // only call ff_set_dimensions() for non H.264/VP6F/DXV codecs so as not to overwrite previously setup dimensions
1330  if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
1331  (avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F || avctx->codec_id == AV_CODEC_ID_DXV))) {
1332  if (avctx->coded_width && avctx->coded_height)
1333  ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
1334  else if (avctx->width && avctx->height)
1335  ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
1336  if (ret < 0)
1337  goto free_and_end;
1338  }
1339 
1340  if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
1341  && ( av_image_check_size2(avctx->coded_width, avctx->coded_height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx) < 0
1342  || av_image_check_size2(avctx->width, avctx->height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx) < 0)) {
1343  av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
1344  ff_set_dimensions(avctx, 0, 0);
1345  }
1346 
1347  if (avctx->width > 0 && avctx->height > 0) {
1348  if (av_image_check_sar(avctx->width, avctx->height,
1349  avctx->sample_aspect_ratio) < 0) {
1350  av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
1351  avctx->sample_aspect_ratio.num,
1352  avctx->sample_aspect_ratio.den);
1353  avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
1354  }
1355  }
1356 
1357  /* if the decoder init function was already called previously,
1358  * free the already allocated subtitle_header before overwriting it */
1359  if (av_codec_is_decoder(codec))
1360  av_freep(&avctx->subtitle_header);
1361 
1362  if (avctx->channels > FF_SANE_NB_CHANNELS) {
1363  ret = AVERROR(EINVAL);
1364  goto free_and_end;
1365  }
1366 
1367  avctx->codec = codec;
1368  if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
1369  avctx->codec_id == AV_CODEC_ID_NONE) {
1370  avctx->codec_type = codec->type;
1371  avctx->codec_id = codec->id;
1372  }
1373  if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
1374  && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
1375  av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
1376  ret = AVERROR(EINVAL);
1377  goto free_and_end;
1378  }
1379  avctx->frame_number = 0;
1381 
1382  if ((avctx->codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) &&
1384  const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
1385  AVCodec *codec2;
1386  av_log(avctx, AV_LOG_ERROR,
1387  "The %s '%s' is experimental but experimental codecs are not enabled, "
1388  "add '-strict %d' if you want to use it.\n",
1389  codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
1390  codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
1391  if (!(codec2->capabilities & AV_CODEC_CAP_EXPERIMENTAL))
1392  av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
1393  codec_string, codec2->name);
1394  ret = AVERROR_EXPERIMENTAL;
1395  goto free_and_end;
1396  }
1397 
1398  if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
1399  (!avctx->time_base.num || !avctx->time_base.den)) {
1400  avctx->time_base.num = 1;
1401  avctx->time_base.den = avctx->sample_rate;
1402  }
1403 
1404  if (!HAVE_THREADS)
1405  av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
1406 
1407  if (CONFIG_FRAME_THREAD_ENCODER && av_codec_is_encoder(avctx->codec)) {
1408  ff_unlock_avcodec(codec); //we will instantiate a few encoders thus kick the counter to prevent false detection of a problem
1409  ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
1410  ff_lock_avcodec(avctx, codec);
1411  if (ret < 0)
1412  goto free_and_end;
1413  }
1414 
1415  if (HAVE_THREADS
1417  ret = ff_thread_init(avctx);
1418  if (ret < 0) {
1419  goto free_and_end;
1420  }
1421  }
1422  if (!HAVE_THREADS && !(codec->capabilities & AV_CODEC_CAP_AUTO_THREADS))
1423  avctx->thread_count = 1;
1424 
1425  if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
1426  av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
1427  avctx->codec->max_lowres);
1428  avctx->lowres = avctx->codec->max_lowres;
1429  }
1430 
1431 #if FF_API_VISMV
1432  if (avctx->debug_mv)
1433  av_log(avctx, AV_LOG_WARNING, "The 'vismv' option is deprecated, "
1434  "see the codecview filter instead.\n");
1435 #endif
1436 
1437  if (av_codec_is_encoder(avctx->codec)) {
1438  int i;
1439 #if FF_API_CODED_FRAME
1441  avctx->coded_frame = av_frame_alloc();
1442  if (!avctx->coded_frame) {
1443  ret = AVERROR(ENOMEM);
1444  goto free_and_end;
1445  }
1447 #endif
1448 
1449  if (avctx->time_base.num <= 0 || avctx->time_base.den <= 0) {
1450  av_log(avctx, AV_LOG_ERROR, "The encoder timebase is not set.\n");
1451  ret = AVERROR(EINVAL);
1452  goto free_and_end;
1453  }
1454 
1455  if (avctx->codec->sample_fmts) {
1456  for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
1457  if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
1458  break;
1459  if (avctx->channels == 1 &&
1462  avctx->sample_fmt = avctx->codec->sample_fmts[i];
1463  break;
1464  }
1465  }
1466  if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
1467  char buf[128];
1468  snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt);
1469  av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n",
1470  (char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf));
1471  ret = AVERROR(EINVAL);
1472  goto free_and_end;
1473  }
1474  }
1475  if (avctx->codec->pix_fmts) {
1476  for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
1477  if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
1478  break;
1479  if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE
1480  && !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG)
1482  char buf[128];
1483  snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt);
1484  av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n",
1485  (char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf));
1486  ret = AVERROR(EINVAL);
1487  goto free_and_end;
1488  }
1489  if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ420P ||
1490  avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ411P ||
1491  avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ422P ||
1492  avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ440P ||
1493  avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ444P)
1494  avctx->color_range = AVCOL_RANGE_JPEG;
1495  }
1496  if (avctx->codec->supported_samplerates) {
1497  for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
1498  if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
1499  break;
1500  if (avctx->codec->supported_samplerates[i] == 0) {
1501  av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
1502  avctx->sample_rate);
1503  ret = AVERROR(EINVAL);
1504  goto free_and_end;
1505  }
1506  }
1507  if (avctx->sample_rate < 0) {
1508  av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
1509  avctx->sample_rate);
1510  ret = AVERROR(EINVAL);
1511  goto free_and_end;
1512  }
1513  if (avctx->codec->channel_layouts) {
1514  if (!avctx->channel_layout) {
1515  av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n");
1516  } else {
1517  for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
1518  if (avctx->channel_layout == avctx->codec->channel_layouts[i])
1519  break;
1520  if (avctx->codec->channel_layouts[i] == 0) {
1521  char buf[512];
1522  av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1523  av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf);
1524  ret = AVERROR(EINVAL);
1525  goto free_and_end;
1526  }
1527  }
1528  }
1529  if (avctx->channel_layout && avctx->channels) {
1530  int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1531  if (channels != avctx->channels) {
1532  char buf[512];
1533  av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1534  av_log(avctx, AV_LOG_ERROR,
1535  "Channel layout '%s' with %d channels does not match number of specified channels %d\n",
1536  buf, channels, avctx->channels);
1537  ret = AVERROR(EINVAL);
1538  goto free_and_end;
1539  }
1540  } else if (avctx->channel_layout) {
1542  }
1543  if (avctx->channels < 0) {
1544  av_log(avctx, AV_LOG_ERROR, "Specified number of channels %d is not supported\n",
1545  avctx->channels);
1546  ret = AVERROR(EINVAL);
1547  goto free_and_end;
1548  }
1549  if(avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1550  pixdesc = av_pix_fmt_desc_get(avctx->pix_fmt);
1551  if ( avctx->bits_per_raw_sample < 0
1552  || (avctx->bits_per_raw_sample > 8 && pixdesc->comp[0].depth <= 8)) {
1553  av_log(avctx, AV_LOG_WARNING, "Specified bit depth %d not possible with the specified pixel formats depth %d\n",
1554  avctx->bits_per_raw_sample, pixdesc->comp[0].depth);
1555  avctx->bits_per_raw_sample = pixdesc->comp[0].depth;
1556  }
1557  if (avctx->width <= 0 || avctx->height <= 0) {
1558  av_log(avctx, AV_LOG_ERROR, "dimensions not set\n");
1559  ret = AVERROR(EINVAL);
1560  goto free_and_end;
1561  }
1562  }
1563  if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
1564  && avctx->bit_rate>0 && avctx->bit_rate<1000) {
1565  av_log(avctx, AV_LOG_WARNING, "Bitrate %"PRId64" is extremely low, maybe you mean %"PRId64"k\n", (int64_t)avctx->bit_rate, (int64_t)avctx->bit_rate);
1566  }
1567 
1568  if (!avctx->rc_initial_buffer_occupancy)
1569  avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
1570 
1571  if (avctx->ticks_per_frame && avctx->time_base.num &&
1572  avctx->ticks_per_frame > INT_MAX / avctx->time_base.num) {
1573  av_log(avctx, AV_LOG_ERROR,
1574  "ticks_per_frame %d too large for the timebase %d/%d.",
1575  avctx->ticks_per_frame,
1576  avctx->time_base.num,
1577  avctx->time_base.den);
1578  goto free_and_end;
1579  }
1580 
1581  if (avctx->hw_frames_ctx) {
1582  AVHWFramesContext *frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
1583  if (frames_ctx->format != avctx->pix_fmt) {
1584  av_log(avctx, AV_LOG_ERROR,
1585  "Mismatching AVCodecContext.pix_fmt and AVHWFramesContext.format\n");
1586  ret = AVERROR(EINVAL);
1587  goto free_and_end;
1588  }
1589  }
1590  }
1591 
1593  avctx->pts_correction_num_faulty_dts = 0;
1594  avctx->pts_correction_last_pts =
1595  avctx->pts_correction_last_dts = INT64_MIN;
1596 
1597  if ( !CONFIG_GRAY && avctx->flags & AV_CODEC_FLAG_GRAY
1599  av_log(avctx, AV_LOG_WARNING,
1600  "gray decoding requested but not enabled at configuration time\n");
1601 
1602  if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
1603  || avctx->internal->frame_thread_encoder)) {
1604  ret = avctx->codec->init(avctx);
1605  if (ret < 0) {
1606  goto free_and_end;
1607  }
1608  }
1609 
1610  ret=0;
1611 
1612 #if FF_API_AUDIOENC_DELAY
1613  if (av_codec_is_encoder(avctx->codec))
1614  avctx->delay = avctx->initial_padding;
1615 #endif
1616 
1617  if (av_codec_is_decoder(avctx->codec)) {
1618  if (!avctx->bit_rate)
1619  avctx->bit_rate = get_bit_rate(avctx);
1620  /* validate channel layout from the decoder */
1621  if (avctx->channel_layout) {
1622  int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1623  if (!avctx->channels)
1624  avctx->channels = channels;
1625  else if (channels != avctx->channels) {
1626  char buf[512];
1627  av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1628  av_log(avctx, AV_LOG_WARNING,
1629  "Channel layout '%s' with %d channels does not match specified number of channels %d: "
1630  "ignoring specified channel layout\n",
1631  buf, channels, avctx->channels);
1632  avctx->channel_layout = 0;
1633  }
1634  }
1635  if (avctx->channels && avctx->channels < 0 ||
1636  avctx->channels > FF_SANE_NB_CHANNELS) {
1637  ret = AVERROR(EINVAL);
1638  goto free_and_end;
1639  }
1640  if (avctx->sub_charenc) {
1641  if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
1642  av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
1643  "supported with subtitles codecs\n");
1644  ret = AVERROR(EINVAL);
1645  goto free_and_end;
1646  } else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
1647  av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
1648  "subtitles character encoding will be ignored\n",
1649  avctx->codec_descriptor->name);
1651  } else {
1652  /* input character encoding is set for a text based subtitle
1653  * codec at this point */
1656 
1658 #if CONFIG_ICONV
1659  iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
1660  if (cd == (iconv_t)-1) {
1661  ret = AVERROR(errno);
1662  av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
1663  "with input character encoding \"%s\"\n", avctx->sub_charenc);
1664  goto free_and_end;
1665  }
1666  iconv_close(cd);
1667 #else
1668  av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
1669  "conversion needs a libavcodec built with iconv support "
1670  "for this codec\n");
1671  ret = AVERROR(ENOSYS);
1672  goto free_and_end;
1673 #endif
1674  }
1675  }
1676  }
1677 
1678 #if FF_API_AVCTX_TIMEBASE
1679  if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
1680  avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
1681 #endif
1682  }
1683  if (codec->priv_data_size > 0 && avctx->priv_data && codec->priv_class) {
1684  av_assert0(*(const AVClass **)avctx->priv_data == codec->priv_class);
1685  }
1686 
1687 end:
1688  ff_unlock_avcodec(codec);
1689  if (options) {
1691  *options = tmp;
1692  }
1693 
1694  return ret;
1695 free_and_end:
1696  if (avctx->codec &&
1697  (avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP))
1698  avctx->codec->close(avctx);
1699 
1700  if (codec->priv_class && codec->priv_data_size)
1701  av_opt_free(avctx->priv_data);
1702  av_opt_free(avctx);
1703 
1704 #if FF_API_CODED_FRAME
1706  av_frame_free(&avctx->coded_frame);
1708 #endif
1709 
1710  av_dict_free(&tmp);
1711  av_freep(&avctx->priv_data);
1712  if (avctx->internal) {
1713  av_packet_free(&avctx->internal->buffer_pkt);
1714  av_frame_free(&avctx->internal->buffer_frame);
1715  av_frame_free(&avctx->internal->to_free);
1716  av_freep(&avctx->internal->pool);
1717  }
1718  av_freep(&avctx->internal);
1719  avctx->codec = NULL;
1720  goto end;
1721 }
1722 
1723 int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
1724 {
1725  if (avpkt->size < 0) {
1726  av_log(avctx, AV_LOG_ERROR, "Invalid negative user packet size %d\n", avpkt->size);
1727  return AVERROR(EINVAL);
1728  }
1730  av_log(avctx, AV_LOG_ERROR, "Invalid minimum required packet size %"PRId64" (max allowed is %d)\n",
1731  size, INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE);
1732  return AVERROR(EINVAL);
1733  }
1734 
1735  if (avctx && 2*min_size < size) { // FIXME The factor needs to be finetuned
1736  av_assert0(!avpkt->data || avpkt->data != avctx->internal->byte_buffer);
1737  if (!avpkt->data || avpkt->size < size) {
1739  avpkt->data = avctx->internal->byte_buffer;
1740  avpkt->size = avctx->internal->byte_buffer_size;
1741  }
1742  }
1743 
1744  if (avpkt->data) {
1745  AVBufferRef *buf = avpkt->buf;
1746 
1747  if (avpkt->size < size) {
1748  av_log(avctx, AV_LOG_ERROR, "User packet is too small (%d < %"PRId64")\n", avpkt->size, size);
1749  return AVERROR(EINVAL);
1750  }
1751 
1752  av_init_packet(avpkt);
1753  avpkt->buf = buf;
1754  avpkt->size = size;
1755  return 0;
1756  } else {
1757  int ret = av_new_packet(avpkt, size);
1758  if (ret < 0)
1759  av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %"PRId64"\n", size);
1760  return ret;
1761  }
1762 }
1763 
1765 {
1766  return ff_alloc_packet2(NULL, avpkt, size, 0);
1767 }
1768 
1769 /**
1770  * Pad last frame with silence.
1771  */
1772 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1773 {
1774  AVFrame *frame = NULL;
1775  int ret;
1776 
1777  if (!(frame = av_frame_alloc()))
1778  return AVERROR(ENOMEM);
1779 
1780  frame->format = src->format;
1781  frame->channel_layout = src->channel_layout;
1783  frame->nb_samples = s->frame_size;
1784  ret = av_frame_get_buffer(frame, 32);
1785  if (ret < 0)
1786  goto fail;
1787 
1788  ret = av_frame_copy_props(frame, src);
1789  if (ret < 0)
1790  goto fail;
1791 
1792  if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1793  src->nb_samples, s->channels, s->sample_fmt)) < 0)
1794  goto fail;
1795  if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1796  frame->nb_samples - src->nb_samples,
1797  s->channels, s->sample_fmt)) < 0)
1798  goto fail;
1799 
1800  *dst = frame;
1801 
1802  return 0;
1803 
1804 fail:
1805  av_frame_free(&frame);
1806  return ret;
1807 }
1808 
1809 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1810  AVPacket *avpkt,
1811  const AVFrame *frame,
1812  int *got_packet_ptr)
1813 {
1814  AVFrame *extended_frame = NULL;
1815  AVFrame *padded_frame = NULL;
1816  int ret;
1817  AVPacket user_pkt = *avpkt;
1818  int needs_realloc = !user_pkt.data;
1819 
1820  *got_packet_ptr = 0;
1821 
1822  if (!avctx->codec->encode2) {
1823  av_log(avctx, AV_LOG_ERROR, "This encoder requires using the avcodec_send_frame() API.\n");
1824  return AVERROR(ENOSYS);
1825  }
1826 
1827  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY) && !frame) {
1828  av_packet_unref(avpkt);
1829  av_init_packet(avpkt);
1830  return 0;
1831  }
1832 
1833  /* ensure that extended_data is properly set */
1834  if (frame && !frame->extended_data) {
1835  if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1836  avctx->channels > AV_NUM_DATA_POINTERS) {
1837  av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1838  "with more than %d channels, but extended_data is not set.\n",
1840  return AVERROR(EINVAL);
1841  }
1842  av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1843 
1844  extended_frame = av_frame_alloc();
1845  if (!extended_frame)
1846  return AVERROR(ENOMEM);
1847 
1848  memcpy(extended_frame, frame, sizeof(AVFrame));
1849  extended_frame->extended_data = extended_frame->data;
1850  frame = extended_frame;
1851  }
1852 
1853  /* extract audio service type metadata */
1854  if (frame) {
1856  if (sd && sd->size >= sizeof(enum AVAudioServiceType))
1857  avctx->audio_service_type = *(enum AVAudioServiceType*)sd->data;
1858  }
1859 
1860  /* check for valid frame size */
1861  if (frame) {
1863  if (frame->nb_samples > avctx->frame_size) {
1864  av_log(avctx, AV_LOG_ERROR, "more samples than frame size (avcodec_encode_audio2)\n");
1865  ret = AVERROR(EINVAL);
1866  goto end;
1867  }
1868  } else if (!(avctx->codec->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1869  if (frame->nb_samples < avctx->frame_size &&
1870  !avctx->internal->last_audio_frame) {
1871  ret = pad_last_frame(avctx, &padded_frame, frame);
1872  if (ret < 0)
1873  goto end;
1874 
1875  frame = padded_frame;
1876  avctx->internal->last_audio_frame = 1;
1877  }
1878 
1879  if (frame->nb_samples != avctx->frame_size) {
1880  av_log(avctx, AV_LOG_ERROR, "nb_samples (%d) != frame_size (%d) (avcodec_encode_audio2)\n", frame->nb_samples, avctx->frame_size);
1881  ret = AVERROR(EINVAL);
1882  goto end;
1883  }
1884  }
1885  }
1886 
1887  av_assert0(avctx->codec->encode2);
1888 
1889  ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1890  if (!ret) {
1891  if (*got_packet_ptr) {
1892  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY)) {
1893  if (avpkt->pts == AV_NOPTS_VALUE)
1894  avpkt->pts = frame->pts;
1895  if (!avpkt->duration)
1896  avpkt->duration = ff_samples_to_time_base(avctx,
1897  frame->nb_samples);
1898  }
1899  avpkt->dts = avpkt->pts;
1900  } else {
1901  avpkt->size = 0;
1902  }
1903  }
1904  if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1905  needs_realloc = 0;
1906  if (user_pkt.data) {
1907  if (user_pkt.size >= avpkt->size) {
1908  memcpy(user_pkt.data, avpkt->data, avpkt->size);
1909  } else {
1910  av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1911  avpkt->size = user_pkt.size;
1912  ret = -1;
1913  }
1914  avpkt->buf = user_pkt.buf;
1915  avpkt->data = user_pkt.data;
1916  } else {
1917  if (av_dup_packet(avpkt) < 0) {
1918  ret = AVERROR(ENOMEM);
1919  }
1920  }
1921  }
1922 
1923  if (!ret) {
1924  if (needs_realloc && avpkt->data) {
1925  ret = av_buffer_realloc(&avpkt->buf, avpkt->size + AV_INPUT_BUFFER_PADDING_SIZE);
1926  if (ret >= 0)
1927  avpkt->data = avpkt->buf->data;
1928  }
1929 
1930  avctx->frame_number++;
1931  }
1932 
1933  if (ret < 0 || !*got_packet_ptr) {
1934  av_packet_unref(avpkt);
1935  av_init_packet(avpkt);
1936  goto end;
1937  }
1938 
1939  /* NOTE: if we add any audio encoders which output non-keyframe packets,
1940  * this needs to be moved to the encoders, but for now we can do it
1941  * here to simplify things */
1942  avpkt->flags |= AV_PKT_FLAG_KEY;
1943 
1944 end:
1945  av_frame_free(&padded_frame);
1946  av_free(extended_frame);
1947 
1948 #if FF_API_AUDIOENC_DELAY
1949  avctx->delay = avctx->initial_padding;
1950 #endif
1951 
1952  return ret;
1953 }
1954 
1955 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
1956  AVPacket *avpkt,
1957  const AVFrame *frame,
1958  int *got_packet_ptr)
1959 {
1960  int ret;
1961  AVPacket user_pkt = *avpkt;
1962  int needs_realloc = !user_pkt.data;
1963 
1964  *got_packet_ptr = 0;
1965 
1966  if (!avctx->codec->encode2) {
1967  av_log(avctx, AV_LOG_ERROR, "This encoder requires using the avcodec_send_frame() API.\n");
1968  return AVERROR(ENOSYS);
1969  }
1970 
1971  if(CONFIG_FRAME_THREAD_ENCODER &&
1973  return ff_thread_video_encode_frame(avctx, avpkt, frame, got_packet_ptr);
1974 
1975  if ((avctx->flags&AV_CODEC_FLAG_PASS1) && avctx->stats_out)
1976  avctx->stats_out[0] = '\0';
1977 
1978  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY) && !frame) {
1979  av_packet_unref(avpkt);
1980  av_init_packet(avpkt);
1981  avpkt->size = 0;
1982  return 0;
1983  }
1984 
1985  if (av_image_check_size2(avctx->width, avctx->height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx))
1986  return AVERROR(EINVAL);
1987 
1988  if (frame && frame->format == AV_PIX_FMT_NONE)
1989  av_log(avctx, AV_LOG_WARNING, "AVFrame.format is not set\n");
1990  if (frame && (frame->width == 0 || frame->height == 0))
1991  av_log(avctx, AV_LOG_WARNING, "AVFrame.width or height is not set\n");
1992 
1993  av_assert0(avctx->codec->encode2);
1994 
1995  ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1996  av_assert0(ret <= 0);
1997 
1998  emms_c();
1999 
2000  if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
2001  needs_realloc = 0;
2002  if (user_pkt.data) {
2003  if (user_pkt.size >= avpkt->size) {
2004  memcpy(user_pkt.data, avpkt->data, avpkt->size);
2005  } else {
2006  av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
2007  avpkt->size = user_pkt.size;
2008  ret = -1;
2009  }
2010  avpkt->buf = user_pkt.buf;
2011  avpkt->data = user_pkt.data;
2012  } else {
2013  if (av_dup_packet(avpkt) < 0) {
2014  ret = AVERROR(ENOMEM);
2015  }
2016  }
2017  }
2018 
2019  if (!ret) {
2020  if (!*got_packet_ptr)
2021  avpkt->size = 0;
2022  else if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
2023  avpkt->pts = avpkt->dts = frame->pts;
2024 
2025  if (needs_realloc && avpkt->data) {
2026  ret = av_buffer_realloc(&avpkt->buf, avpkt->size + AV_INPUT_BUFFER_PADDING_SIZE);
2027  if (ret >= 0)
2028  avpkt->data = avpkt->buf->data;
2029  }
2030 
2031  avctx->frame_number++;
2032  }
2033 
2034  if (ret < 0 || !*got_packet_ptr)
2035  av_packet_unref(avpkt);
2036 
2037  return ret;
2038 }
2039 
2041  const AVSubtitle *sub)
2042 {
2043  int ret;
2044  if (sub->start_display_time) {
2045  av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
2046  return -1;
2047  }
2048 
2049  ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
2050  avctx->frame_number++;
2051  return ret;
2052 }
2053 
2054 /**
2055  * Attempt to guess proper monotonic timestamps for decoded video frames
2056  * which might have incorrect times. Input timestamps may wrap around, in
2057  * which case the output will as well.
2058  *
2059  * @param pts the pts field of the decoded AVPacket, as passed through
2060  * AVFrame.pts
2061  * @param dts the dts field of the decoded AVPacket
2062  * @return one of the input values, may be AV_NOPTS_VALUE
2063  */
2065  int64_t reordered_pts, int64_t dts)
2066 {
2067  int64_t pts = AV_NOPTS_VALUE;
2068 
2069  if (dts != AV_NOPTS_VALUE) {
2071  ctx->pts_correction_last_dts = dts;
2072  } else if (reordered_pts != AV_NOPTS_VALUE)
2073  ctx->pts_correction_last_dts = reordered_pts;
2074 
2075  if (reordered_pts != AV_NOPTS_VALUE) {
2076  ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
2077  ctx->pts_correction_last_pts = reordered_pts;
2078  } else if(dts != AV_NOPTS_VALUE)
2079  ctx->pts_correction_last_pts = dts;
2080 
2082  && reordered_pts != AV_NOPTS_VALUE)
2083  pts = reordered_pts;
2084  else
2085  pts = dts;
2086 
2087  return pts;
2088 }
2089 
2090 static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
2091 {
2092  int size = 0, ret;
2093  const uint8_t *data;
2094  uint32_t flags;
2095  int64_t val;
2096 
2097  data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
2098  if (!data)
2099  return 0;
2100 
2101  if (!(avctx->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE)) {
2102  av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
2103  "changes, but PARAM_CHANGE side data was sent to it.\n");
2104  ret = AVERROR(EINVAL);
2105  goto fail2;
2106  }
2107 
2108  if (size < 4)
2109  goto fail;
2110 
2111  flags = bytestream_get_le32(&data);
2112  size -= 4;
2113 
2115  if (size < 4)
2116  goto fail;
2117  val = bytestream_get_le32(&data);
2118  if (val <= 0 || val > INT_MAX) {
2119  av_log(avctx, AV_LOG_ERROR, "Invalid channel count");
2120  ret = AVERROR_INVALIDDATA;
2121  goto fail2;
2122  }
2123  avctx->channels = val;
2124  size -= 4;
2125  }
2127  if (size < 8)
2128  goto fail;
2129  avctx->channel_layout = bytestream_get_le64(&data);
2130  size -= 8;
2131  }
2133  if (size < 4)
2134  goto fail;
2135  val = bytestream_get_le32(&data);
2136  if (val <= 0 || val > INT_MAX) {
2137  av_log(avctx, AV_LOG_ERROR, "Invalid sample rate");
2138  ret = AVERROR_INVALIDDATA;
2139  goto fail2;
2140  }
2141  avctx->sample_rate = val;
2142  size -= 4;
2143  }
2145  if (size < 8)
2146  goto fail;
2147  avctx->width = bytestream_get_le32(&data);
2148  avctx->height = bytestream_get_le32(&data);
2149  size -= 8;
2150  ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
2151  if (ret < 0)
2152  goto fail2;
2153  }
2154 
2155  return 0;
2156 fail:
2157  av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
2158  ret = AVERROR_INVALIDDATA;
2159 fail2:
2160  if (ret < 0) {
2161  av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
2162  if (avctx->err_recognition & AV_EF_EXPLODE)
2163  return ret;
2164  }
2165  return 0;
2166 }
2167 
2169 {
2170  int ret;
2171 
2172  /* move the original frame to our backup */
2173  av_frame_unref(avci->to_free);
2174  av_frame_move_ref(avci->to_free, frame);
2175 
2176  /* now copy everything except the AVBufferRefs back
2177  * note that we make a COPY of the side data, so calling av_frame_free() on
2178  * the caller's frame will work properly */
2179  ret = av_frame_copy_props(frame, avci->to_free);
2180  if (ret < 0)
2181  return ret;
2182 
2183  memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
2184  memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
2185  if (avci->to_free->extended_data != avci->to_free->data) {
2186  int planes = av_frame_get_channels(avci->to_free);
2187  int size = planes * sizeof(*frame->extended_data);
2188 
2189  if (!size) {
2190  av_frame_unref(frame);
2191  return AVERROR_BUG;
2192  }
2193 
2194  frame->extended_data = av_malloc(size);
2195  if (!frame->extended_data) {
2196  av_frame_unref(frame);
2197  return AVERROR(ENOMEM);
2198  }
2199  memcpy(frame->extended_data, avci->to_free->extended_data,
2200  size);
2201  } else
2202  frame->extended_data = frame->data;
2203 
2204  frame->format = avci->to_free->format;
2205  frame->width = avci->to_free->width;
2206  frame->height = avci->to_free->height;
2207  frame->channel_layout = avci->to_free->channel_layout;
2208  frame->nb_samples = avci->to_free->nb_samples;
2210 
2211  return 0;
2212 }
2213 
2214 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
2215  int *got_picture_ptr,
2216  const AVPacket *avpkt)
2217 {
2218  AVCodecInternal *avci = avctx->internal;
2219  int ret;
2220  // copy to ensure we do not change avpkt
2221  AVPacket tmp = *avpkt;
2222 
2223  if (!avctx->codec)
2224  return AVERROR(EINVAL);
2225  if (avctx->codec->type != AVMEDIA_TYPE_VIDEO) {
2226  av_log(avctx, AV_LOG_ERROR, "Invalid media type for video\n");
2227  return AVERROR(EINVAL);
2228  }
2229 
2230  if (!avctx->codec->decode) {
2231  av_log(avctx, AV_LOG_ERROR, "This decoder requires using the avcodec_send_packet() API.\n");
2232  return AVERROR(ENOSYS);
2233  }
2234 
2235  *got_picture_ptr = 0;
2236  if ((avctx->coded_width || avctx->coded_height) && av_image_check_size2(avctx->coded_width, avctx->coded_height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx))
2237  return AVERROR(EINVAL);
2238 
2239  avctx->internal->pkt = avpkt;
2240  ret = apply_param_change(avctx, avpkt);
2241  if (ret < 0)
2242  return ret;
2243 
2244  av_frame_unref(picture);
2245 
2246  if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size ||
2247  (avctx->active_thread_type & FF_THREAD_FRAME)) {
2248  int did_split = av_packet_split_side_data(&tmp);
2249  ret = apply_param_change(avctx, &tmp);
2250  if (ret < 0)
2251  goto fail;
2252 
2253  avctx->internal->pkt = &tmp;
2254  if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2255  ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
2256  &tmp);
2257  else {
2258  ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
2259  &tmp);
2261  picture->pkt_dts = avpkt->dts;
2262 
2263  if(!avctx->has_b_frames){
2264  av_frame_set_pkt_pos(picture, avpkt->pos);
2265  }
2266  //FIXME these should be under if(!avctx->has_b_frames)
2267  /* get_buffer is supposed to set frame parameters */
2268  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DR1)) {
2269  if (!picture->sample_aspect_ratio.num) picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
2270  if (!picture->width) picture->width = avctx->width;
2271  if (!picture->height) picture->height = avctx->height;
2272  if (picture->format == AV_PIX_FMT_NONE) picture->format = avctx->pix_fmt;
2273  }
2274  }
2275 
2276 fail:
2277  emms_c(); //needed to avoid an emms_c() call before every return;
2278 
2279  avctx->internal->pkt = NULL;
2280  if (did_split) {
2282  if(ret == tmp.size)
2283  ret = avpkt->size;
2284  }
2285  if (picture->flags & AV_FRAME_FLAG_DISCARD) {
2286  *got_picture_ptr = 0;
2287  }
2288  if (*got_picture_ptr) {
2289  if (!avctx->refcounted_frames) {
2290  int err = unrefcount_frame(avci, picture);
2291  if (err < 0)
2292  return err;
2293  }
2294 
2295  avctx->frame_number++;
2297  guess_correct_pts(avctx,
2298  picture->pts,
2299  picture->pkt_dts));
2300  } else
2301  av_frame_unref(picture);
2302  } else
2303  ret = 0;
2304 
2305  /* many decoders assign whole AVFrames, thus overwriting extended_data;
2306  * make sure it's set correctly */
2307  av_assert0(!picture->extended_data || picture->extended_data == picture->data);
2308 
2309 #if FF_API_AVCTX_TIMEBASE
2310  if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
2311  avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
2312 #endif
2313 
2314  return ret;
2315 }
2316 
2317 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
2318  AVFrame *frame,
2319  int *got_frame_ptr,
2320  const AVPacket *avpkt)
2321 {
2322  AVCodecInternal *avci = avctx->internal;
2323  int ret = 0;
2324 
2325  *got_frame_ptr = 0;
2326 
2327  if (!avctx->codec)
2328  return AVERROR(EINVAL);
2329 
2330  if (!avctx->codec->decode) {
2331  av_log(avctx, AV_LOG_ERROR, "This decoder requires using the avcodec_send_packet() API.\n");
2332  return AVERROR(ENOSYS);
2333  }
2334 
2335  if (!avpkt->data && avpkt->size) {
2336  av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2337  return AVERROR(EINVAL);
2338  }
2339  if (avctx->codec->type != AVMEDIA_TYPE_AUDIO) {
2340  av_log(avctx, AV_LOG_ERROR, "Invalid media type for audio\n");
2341  return AVERROR(EINVAL);
2342  }
2343 
2344  av_frame_unref(frame);
2345 
2346  if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
2347  uint8_t *side;
2348  int side_size;
2349  uint32_t discard_padding = 0;
2350  uint8_t skip_reason = 0;
2351  uint8_t discard_reason = 0;
2352  // copy to ensure we do not change avpkt
2353  AVPacket tmp = *avpkt;
2354  int did_split = av_packet_split_side_data(&tmp);
2355  ret = apply_param_change(avctx, &tmp);
2356  if (ret < 0)
2357  goto fail;
2358 
2359  avctx->internal->pkt = &tmp;
2360  if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2361  ret = ff_thread_decode_frame(avctx, frame, got_frame_ptr, &tmp);
2362  else {
2363  ret = avctx->codec->decode(avctx, frame, got_frame_ptr, &tmp);
2364  av_assert0(ret <= tmp.size);
2365  frame->pkt_dts = avpkt->dts;
2366  }
2367  if (ret >= 0 && *got_frame_ptr) {
2368  avctx->frame_number++;
2370  guess_correct_pts(avctx,
2371  frame->pts,
2372  frame->pkt_dts));
2373  if (frame->format == AV_SAMPLE_FMT_NONE)
2374  frame->format = avctx->sample_fmt;
2375  if (!frame->channel_layout)
2376  frame->channel_layout = avctx->channel_layout;
2377  if (!av_frame_get_channels(frame))
2378  av_frame_set_channels(frame, avctx->channels);
2379  if (!frame->sample_rate)
2380  frame->sample_rate = avctx->sample_rate;
2381  }
2382 
2383  side= av_packet_get_side_data(avctx->internal->pkt, AV_PKT_DATA_SKIP_SAMPLES, &side_size);
2384  if(side && side_size>=10) {
2385  avctx->internal->skip_samples = AV_RL32(side);
2386  discard_padding = AV_RL32(side + 4);
2387  av_log(avctx, AV_LOG_DEBUG, "skip %d / discard %d samples due to side data\n",
2388  avctx->internal->skip_samples, (int)discard_padding);
2389  skip_reason = AV_RL8(side + 8);
2390  discard_reason = AV_RL8(side + 9);
2391  }
2392 
2393  if ((frame->flags & AV_FRAME_FLAG_DISCARD) && *got_frame_ptr &&
2394  !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
2395  avctx->internal->skip_samples = FFMAX(0, avctx->internal->skip_samples - frame->nb_samples);
2396  *got_frame_ptr = 0;
2397  }
2398 
2399  if (avctx->internal->skip_samples > 0 && *got_frame_ptr &&
2400  !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
2401  if(frame->nb_samples <= avctx->internal->skip_samples){
2402  *got_frame_ptr = 0;
2403  avctx->internal->skip_samples -= frame->nb_samples;
2404  av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
2405  avctx->internal->skip_samples);
2406  } else {
2408  frame->nb_samples - avctx->internal->skip_samples, avctx->channels, frame->format);
2409  if(avctx->pkt_timebase.num && avctx->sample_rate) {
2410  int64_t diff_ts = av_rescale_q(avctx->internal->skip_samples,
2411  (AVRational){1, avctx->sample_rate},
2412  avctx->pkt_timebase);
2413  if(frame->pts!=AV_NOPTS_VALUE)
2414  frame->pts += diff_ts;
2415 #if FF_API_PKT_PTS
2417  if(frame->pkt_pts!=AV_NOPTS_VALUE)
2418  frame->pkt_pts += diff_ts;
2420 #endif
2421  if(frame->pkt_dts!=AV_NOPTS_VALUE)
2422  frame->pkt_dts += diff_ts;
2423  if (av_frame_get_pkt_duration(frame) >= diff_ts)
2424  av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2425  } else {
2426  av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
2427  }
2428  av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
2429  avctx->internal->skip_samples, frame->nb_samples);
2430  frame->nb_samples -= avctx->internal->skip_samples;
2431  avctx->internal->skip_samples = 0;
2432  }
2433  }
2434 
2435  if (discard_padding > 0 && discard_padding <= frame->nb_samples && *got_frame_ptr &&
2436  !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
2437  if (discard_padding == frame->nb_samples) {
2438  *got_frame_ptr = 0;
2439  } else {
2440  if(avctx->pkt_timebase.num && avctx->sample_rate) {
2441  int64_t diff_ts = av_rescale_q(frame->nb_samples - discard_padding,
2442  (AVRational){1, avctx->sample_rate},
2443  avctx->pkt_timebase);
2444  av_frame_set_pkt_duration(frame, diff_ts);
2445  } else {
2446  av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for discarded samples.\n");
2447  }
2448  av_log(avctx, AV_LOG_DEBUG, "discard %d/%d samples\n",
2449  (int)discard_padding, frame->nb_samples);
2450  frame->nb_samples -= discard_padding;
2451  }
2452  }
2453 
2454  if ((avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL) && *got_frame_ptr) {
2456  if (fside) {
2457  AV_WL32(fside->data, avctx->internal->skip_samples);
2458  AV_WL32(fside->data + 4, discard_padding);
2459  AV_WL8(fside->data + 8, skip_reason);
2460  AV_WL8(fside->data + 9, discard_reason);
2461  avctx->internal->skip_samples = 0;
2462  }
2463  }
2464 fail:
2465  avctx->internal->pkt = NULL;
2466  if (did_split) {
2468  if(ret == tmp.size)
2469  ret = avpkt->size;
2470  }
2471 
2472  if (ret >= 0 && *got_frame_ptr) {
2473  if (!avctx->refcounted_frames) {
2474  int err = unrefcount_frame(avci, frame);
2475  if (err < 0)
2476  return err;
2477  }
2478  } else
2480  }
2481 
2482  av_assert0(ret <= avpkt->size);
2483 
2484  if (!avci->showed_multi_packet_warning &&
2485  ret >= 0 && ret != avpkt->size && !(avctx->codec->capabilities & AV_CODEC_CAP_SUBFRAMES)) {
2486  av_log(avctx, AV_LOG_WARNING, "Multiple frames in a packet.\n");
2487  avci->showed_multi_packet_warning = 1;
2488  }
2489 
2490  return ret;
2491 }
2492 
2493 #define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
2495  AVPacket *outpkt, const AVPacket *inpkt)
2496 {
2497 #if CONFIG_ICONV
2498  iconv_t cd = (iconv_t)-1;
2499  int ret = 0;
2500  char *inb, *outb;
2501  size_t inl, outl;
2502  AVPacket tmp;
2503 #endif
2504 
2505  if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER || inpkt->size == 0)
2506  return 0;
2507 
2508 #if CONFIG_ICONV
2509  cd = iconv_open("UTF-8", avctx->sub_charenc);
2510  av_assert0(cd != (iconv_t)-1);
2511 
2512  inb = inpkt->data;
2513  inl = inpkt->size;
2514 
2515  if (inl >= INT_MAX / UTF8_MAX_BYTES - AV_INPUT_BUFFER_PADDING_SIZE) {
2516  av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n");
2517  ret = AVERROR(ENOMEM);
2518  goto end;
2519  }
2520 
2521  ret = av_new_packet(&tmp, inl * UTF8_MAX_BYTES);
2522  if (ret < 0)
2523  goto end;
2524  outpkt->buf = tmp.buf;
2525  outpkt->data = tmp.data;
2526  outpkt->size = tmp.size;
2527  outb = outpkt->data;
2528  outl = outpkt->size;
2529 
2530  if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
2531  iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
2532  outl >= outpkt->size || inl != 0) {
2533  ret = FFMIN(AVERROR(errno), -1);
2534  av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
2535  "from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
2536  av_packet_unref(&tmp);
2537  goto end;
2538  }
2539  outpkt->size -= outl;
2540  memset(outpkt->data + outpkt->size, 0, outl);
2541 
2542 end:
2543  if (cd != (iconv_t)-1)
2544  iconv_close(cd);
2545  return ret;
2546 #else
2547  av_log(avctx, AV_LOG_ERROR, "requesting subtitles recoding without iconv");
2548  return AVERROR(EINVAL);
2549 #endif
2550 }
2551 
2552 static int utf8_check(const uint8_t *str)
2553 {
2554  const uint8_t *byte;
2555  uint32_t codepoint, min;
2556 
2557  while (*str) {
2558  byte = str;
2559  GET_UTF8(codepoint, *(byte++), return 0;);
2560  min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
2561  1 << (5 * (byte - str) - 4);
2562  if (codepoint < min || codepoint >= 0x110000 ||
2563  codepoint == 0xFFFE /* BOM */ ||
2564  codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
2565  return 0;
2566  str = byte;
2567  }
2568  return 1;
2569 }
2570 
2571 #if FF_API_ASS_TIMING
2572 static void insert_ts(AVBPrint *buf, int ts)
2573 {
2574  if (ts == -1) {
2575  av_bprintf(buf, "9:59:59.99,");
2576  } else {
2577  int h, m, s;
2578 
2579  h = ts/360000; ts -= 360000*h;
2580  m = ts/ 6000; ts -= 6000*m;
2581  s = ts/ 100; ts -= 100*s;
2582  av_bprintf(buf, "%d:%02d:%02d.%02d,", h, m, s, ts);
2583  }
2584 }
2585 
2587 {
2588  int i;
2589  AVBPrint buf;
2590 
2592 
2593  for (i = 0; i < sub->num_rects; i++) {
2594  char *final_dialog;
2595  const char *dialog;
2596  AVSubtitleRect *rect = sub->rects[i];
2597  int ts_start, ts_duration = -1;
2598  long int layer;
2599 
2600  if (rect->type != SUBTITLE_ASS || !strncmp(rect->ass, "Dialogue: ", 10))
2601  continue;
2602 
2603  av_bprint_clear(&buf);
2604 
2605  /* skip ReadOrder */
2606  dialog = strchr(rect->ass, ',');
2607  if (!dialog)
2608  continue;
2609  dialog++;
2610 
2611  /* extract Layer or Marked */
2612  layer = strtol(dialog, (char**)&dialog, 10);
2613  if (*dialog != ',')
2614  continue;
2615  dialog++;
2616 
2617  /* rescale timing to ASS time base (ms) */
2618  ts_start = av_rescale_q(pkt->pts, tb, av_make_q(1, 100));
2619  if (pkt->duration != -1)
2620  ts_duration = av_rescale_q(pkt->duration, tb, av_make_q(1, 100));
2621  sub->end_display_time = FFMAX(sub->end_display_time, 10 * ts_duration);
2622 
2623  /* construct ASS (standalone file form with timestamps) string */
2624  av_bprintf(&buf, "Dialogue: %ld,", layer);
2625  insert_ts(&buf, ts_start);
2626  insert_ts(&buf, ts_duration == -1 ? -1 : ts_start + ts_duration);
2627  av_bprintf(&buf, "%s\r\n", dialog);
2628 
2629  final_dialog = av_strdup(buf.str);
2630  if (!av_bprint_is_complete(&buf) || !final_dialog) {
2631  av_freep(&final_dialog);
2632  av_bprint_finalize(&buf, NULL);
2633  return AVERROR(ENOMEM);
2634  }
2635  av_freep(&rect->ass);
2636  rect->ass = final_dialog;
2637  }
2638 
2639  av_bprint_finalize(&buf, NULL);
2640  return 0;
2641 }
2642 #endif
2643 
2645  int *got_sub_ptr,
2646  AVPacket *avpkt)
2647 {
2648  int i, ret = 0;
2649 
2650  if (!avpkt->data && avpkt->size) {
2651  av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2652  return AVERROR(EINVAL);
2653  }
2654  if (!avctx->codec)
2655  return AVERROR(EINVAL);
2656  if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
2657  av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
2658  return AVERROR(EINVAL);
2659  }
2660 
2661  *got_sub_ptr = 0;
2662  get_subtitle_defaults(sub);
2663 
2664  if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size) {
2665  AVPacket pkt_recoded;
2666  AVPacket tmp = *avpkt;
2667  int did_split = av_packet_split_side_data(&tmp);
2668  //apply_param_change(avctx, &tmp);
2669 
2670  if (did_split) {
2671  /* FFMIN() prevents overflow in case the packet wasn't allocated with
2672  * proper padding.
2673  * If the side data is smaller than the buffer padding size, the
2674  * remaining bytes should have already been filled with zeros by the
2675  * original packet allocation anyway. */
2676  memset(tmp.data + tmp.size, 0,
2677  FFMIN(avpkt->size - tmp.size, AV_INPUT_BUFFER_PADDING_SIZE));
2678  }
2679 
2680  pkt_recoded = tmp;
2681  ret = recode_subtitle(avctx, &pkt_recoded, &tmp);
2682  if (ret < 0) {
2683  *got_sub_ptr = 0;
2684  } else {
2685  avctx->internal->pkt = &pkt_recoded;
2686 
2687  if (avctx->pkt_timebase.num && avpkt->pts != AV_NOPTS_VALUE)
2688  sub->pts = av_rescale_q(avpkt->pts,
2689  avctx->pkt_timebase, AV_TIME_BASE_Q);
2690  ret = avctx->codec->decode(avctx, sub, got_sub_ptr, &pkt_recoded);
2691  av_assert1((ret >= 0) >= !!*got_sub_ptr &&
2692  !!*got_sub_ptr >= !!sub->num_rects);
2693 
2694 #if FF_API_ASS_TIMING
2696  && *got_sub_ptr && sub->num_rects) {
2697  const AVRational tb = avctx->pkt_timebase.num ? avctx->pkt_timebase
2698  : avctx->time_base;
2699  int err = convert_sub_to_old_ass_form(sub, avpkt, tb);
2700  if (err < 0)
2701  ret = err;
2702  }
2703 #endif
2704 
2705  if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
2706  avctx->pkt_timebase.num) {
2707  AVRational ms = { 1, 1000 };
2708  sub->end_display_time = av_rescale_q(avpkt->duration,
2709  avctx->pkt_timebase, ms);
2710  }
2711 
2712  for (i = 0; i < sub->num_rects; i++) {
2713  if (sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
2714  av_log(avctx, AV_LOG_ERROR,
2715  "Invalid UTF-8 in decoded subtitles text; "
2716  "maybe missing -sub_charenc option\n");
2717  avsubtitle_free(sub);
2718  return AVERROR_INVALIDDATA;
2719  }
2720  }
2721 
2722  if (tmp.data != pkt_recoded.data) { // did we recode?
2723  /* prevent from destroying side data from original packet */
2724  pkt_recoded.side_data = NULL;
2725  pkt_recoded.side_data_elems = 0;
2726 
2727  av_packet_unref(&pkt_recoded);
2728  }
2730  sub->format = 0;
2731  else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB)
2732  sub->format = 1;
2733  avctx->internal->pkt = NULL;
2734  }
2735 
2736  if (did_split) {
2738  if(ret == tmp.size)
2739  ret = avpkt->size;
2740  }
2741 
2742  if (*got_sub_ptr)
2743  avctx->frame_number++;
2744  }
2745 
2746  return ret;
2747 }
2748 
2750 {
2751  int i;
2752 
2753  for (i = 0; i < sub->num_rects; i++) {
2754  av_freep(&sub->rects[i]->data[0]);
2755  av_freep(&sub->rects[i]->data[1]);
2756  av_freep(&sub->rects[i]->data[2]);
2757  av_freep(&sub->rects[i]->data[3]);
2758  av_freep(&sub->rects[i]->text);
2759  av_freep(&sub->rects[i]->ass);
2760  av_freep(&sub->rects[i]);
2761  }
2762 
2763  av_freep(&sub->rects);
2764 
2765  memset(sub, 0, sizeof(AVSubtitle));
2766 }
2767 
2768 static int do_decode(AVCodecContext *avctx, AVPacket *pkt)
2769 {
2770  int got_frame;
2771  int ret;
2772 
2773  av_assert0(!avctx->internal->buffer_frame->buf[0]);
2774 
2775  if (!pkt)
2776  pkt = avctx->internal->buffer_pkt;
2777 
2778  // This is the lesser evil. The field is for compatibility with legacy users
2779  // of the legacy API, and users using the new API should not be forced to
2780  // even know about this field.
2781  avctx->refcounted_frames = 1;
2782 
2783  // Some codecs (at least wma lossless) will crash when feeding drain packets
2784  // after EOF was signaled.
2785  if (avctx->internal->draining_done)
2786  return AVERROR_EOF;
2787 
2788  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
2789  ret = avcodec_decode_video2(avctx, avctx->internal->buffer_frame,
2790  &got_frame, pkt);
2791  if (ret >= 0 && !(avctx->flags & AV_CODEC_FLAG_TRUNCATED))
2792  ret = pkt->size;
2793  } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2794  ret = avcodec_decode_audio4(avctx, avctx->internal->buffer_frame,
2795  &got_frame, pkt);
2796  } else {
2797  ret = AVERROR(EINVAL);
2798  }
2799 
2800  if (ret == AVERROR(EAGAIN))
2801  ret = pkt->size;
2802 
2803  if (ret < 0)
2804  return ret;
2805 
2806  if (avctx->internal->draining && !got_frame)
2807  avctx->internal->draining_done = 1;
2808 
2809  if (ret >= pkt->size) {
2811  } else {
2812  int consumed = ret;
2813 
2814  if (pkt != avctx->internal->buffer_pkt) {
2816  if ((ret = av_packet_ref(avctx->internal->buffer_pkt, pkt)) < 0)
2817  return ret;
2818  }
2819 
2820  avctx->internal->buffer_pkt->data += consumed;
2821  avctx->internal->buffer_pkt->size -= consumed;
2824  }
2825 
2826  if (got_frame)
2827  av_assert0(avctx->internal->buffer_frame->buf[0]);
2828 
2829  return 0;
2830 }
2831 
2832 int attribute_align_arg avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt)
2833 {
2834  int ret;
2835 
2836  if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
2837  return AVERROR(EINVAL);
2838 
2839  if (avctx->internal->draining)
2840  return AVERROR_EOF;
2841 
2842  if (avpkt && !avpkt->size && avpkt->data)
2843  return AVERROR(EINVAL);
2844 
2845  if (!avpkt || !avpkt->size) {
2846  avctx->internal->draining = 1;
2847  avpkt = NULL;
2848 
2849  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
2850  return 0;
2851  }
2852 
2853  if (avctx->codec->send_packet) {
2854  if (avpkt) {
2855  AVPacket tmp = *avpkt;
2856  int did_split = av_packet_split_side_data(&tmp);
2857  ret = apply_param_change(avctx, &tmp);
2858  if (ret >= 0)
2859  ret = avctx->codec->send_packet(avctx, &tmp);
2860  if (did_split)
2862  return ret;
2863  } else {
2864  return avctx->codec->send_packet(avctx, NULL);
2865  }
2866  }
2867 
2868  // Emulation via old API. Assume avpkt is likely not refcounted, while
2869  // decoder output is always refcounted, and avoid copying.
2870 
2871  if (avctx->internal->buffer_pkt->size || avctx->internal->buffer_frame->buf[0])
2872  return AVERROR(EAGAIN);
2873 
2874  // The goal is decoding the first frame of the packet without using memcpy,
2875  // because the common case is having only 1 frame per packet (especially
2876  // with video, but audio too). In other cases, it can't be avoided, unless
2877  // the user is feeding refcounted packets.
2878  return do_decode(avctx, (AVPacket *)avpkt);
2879 }
2880 
2881 int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
2882 {
2883  int ret;
2884 
2885  av_frame_unref(frame);
2886 
2887  if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
2888  return AVERROR(EINVAL);
2889 
2890  if (avctx->codec->receive_frame) {
2891  if (avctx->internal->draining && !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
2892  return AVERROR_EOF;
2893  ret = avctx->codec->receive_frame(avctx, frame);
2894  if (ret >= 0) {
2897  guess_correct_pts(avctx, frame->pts, frame->pkt_dts));
2898  }
2899  }
2900  return ret;
2901  }
2902 
2903  // Emulation via old API.
2904 
2905  if (!avctx->internal->buffer_frame->buf[0]) {
2906  if (!avctx->internal->buffer_pkt->size && !avctx->internal->draining)
2907  return AVERROR(EAGAIN);
2908 
2909  while (1) {
2910  if ((ret = do_decode(avctx, avctx->internal->buffer_pkt)) < 0) {
2912  return ret;
2913  }
2914  // Some audio decoders may consume partial data without returning
2915  // a frame (fate-wmapro-2ch). There is no way to make the caller
2916  // call avcodec_receive_frame() again without returning a frame,
2917  // so try to decode more in these cases.
2918  if (avctx->internal->buffer_frame->buf[0] ||
2919  !avctx->internal->buffer_pkt->size)
2920  break;
2921  }
2922  }
2923 
2924  if (!avctx->internal->buffer_frame->buf[0])
2925  return avctx->internal->draining ? AVERROR_EOF : AVERROR(EAGAIN);
2926 
2927  av_frame_move_ref(frame, avctx->internal->buffer_frame);
2928  return 0;
2929 }
2930 
2931 static int do_encode(AVCodecContext *avctx, const AVFrame *frame, int *got_packet)
2932 {
2933  int ret;
2934  *got_packet = 0;
2935 
2937  avctx->internal->buffer_pkt_valid = 0;
2938 
2939  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
2940  ret = avcodec_encode_video2(avctx, avctx->internal->buffer_pkt,
2941  frame, got_packet);
2942  } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2943  ret = avcodec_encode_audio2(avctx, avctx->internal->buffer_pkt,
2944  frame, got_packet);
2945  } else {
2946  ret = AVERROR(EINVAL);
2947  }
2948 
2949  if (ret >= 0 && *got_packet) {
2950  // Encoders must always return ref-counted buffers.
2951  // Side-data only packets have no data and can be not ref-counted.
2952  av_assert0(!avctx->internal->buffer_pkt->data || avctx->internal->buffer_pkt->buf);
2953  avctx->internal->buffer_pkt_valid = 1;
2954  ret = 0;
2955  } else {
2957  }
2958 
2959  return ret;
2960 }
2961 
2962 int attribute_align_arg avcodec_send_frame(AVCodecContext *avctx, const AVFrame *frame)
2963 {
2964  if (!avcodec_is_open(avctx) || !av_codec_is_encoder(avctx->codec))
2965  return AVERROR(EINVAL);
2966 
2967  if (avctx->internal->draining)
2968  return AVERROR_EOF;
2969 
2970  if (!frame) {
2971  avctx->internal->draining = 1;
2972 
2973  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
2974  return 0;
2975  }
2976 
2977  if (avctx->codec->send_frame)
2978  return avctx->codec->send_frame(avctx, frame);
2979 
2980  // Emulation via old API. Do it here instead of avcodec_receive_packet, because:
2981  // 1. if the AVFrame is not refcounted, the copying will be much more
2982  // expensive than copying the packet data
2983  // 2. assume few users use non-refcounted AVPackets, so usually no copy is
2984  // needed
2985 
2986  if (avctx->internal->buffer_pkt_valid)
2987  return AVERROR(EAGAIN);
2988 
2989  return do_encode(avctx, frame, &(int){0});
2990 }
2991 
2992 int attribute_align_arg avcodec_receive_packet(AVCodecContext *avctx, AVPacket *avpkt)
2993 {
2994  av_packet_unref(avpkt);
2995 
2996  if (!avcodec_is_open(avctx) || !av_codec_is_encoder(avctx->codec))
2997  return AVERROR(EINVAL);
2998 
2999  if (avctx->codec->receive_packet) {
3000  if (avctx->internal->draining && !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
3001  return AVERROR_EOF;
3002  return avctx->codec->receive_packet(avctx, avpkt);
3003  }
3004 
3005  // Emulation via old API.
3006 
3007  if (!avctx->internal->buffer_pkt_valid) {
3008  int got_packet;
3009  int ret;
3010  if (!avctx->internal->draining)
3011  return AVERROR(EAGAIN);
3012  ret = do_encode(avctx, NULL, &got_packet);
3013  if (ret < 0)
3014  return ret;
3015  if (ret >= 0 && !got_packet)
3016  return AVERROR_EOF;
3017  }
3018 
3019  av_packet_move_ref(avpkt, avctx->internal->buffer_pkt);
3020  avctx->internal->buffer_pkt_valid = 0;
3021  return 0;
3022 }
3023 
3025 {
3026  int i;
3027 
3028  if (!avctx)
3029  return 0;
3030 
3031  if (avcodec_is_open(avctx)) {
3032  FramePool *pool = avctx->internal->pool;
3033  if (CONFIG_FRAME_THREAD_ENCODER &&
3034  avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
3036  }
3037  if (HAVE_THREADS && avctx->internal->thread_ctx)
3038  ff_thread_free(avctx);
3039  if (avctx->codec && avctx->codec->close)
3040  avctx->codec->close(avctx);
3041  avctx->internal->byte_buffer_size = 0;
3042  av_freep(&avctx->internal->byte_buffer);
3043  av_frame_free(&avctx->internal->to_free);
3046  for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
3047  av_buffer_pool_uninit(&pool->pools[i]);
3048  av_freep(&avctx->internal->pool);
3049 
3050  if (avctx->hwaccel && avctx->hwaccel->uninit)
3051  avctx->hwaccel->uninit(avctx);
3053 
3054  av_freep(&avctx->internal);
3055  }
3056 
3057  for (i = 0; i < avctx->nb_coded_side_data; i++)
3058  av_freep(&avctx->coded_side_data[i].data);
3059  av_freep(&avctx->coded_side_data);
3060  avctx->nb_coded_side_data = 0;
3061 
3062  av_buffer_unref(&avctx->hw_frames_ctx);
3063 
3064  if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
3065  av_opt_free(avctx->priv_data);
3066  av_opt_free(avctx);
3067  av_freep(&avctx->priv_data);
3068  if (av_codec_is_encoder(avctx->codec)) {
3069  av_freep(&avctx->extradata);
3070 #if FF_API_CODED_FRAME
3072  av_frame_free(&avctx->coded_frame);
3074 #endif
3075  }
3076  avctx->codec = NULL;
3077  avctx->active_thread_type = 0;
3078 
3079  return 0;
3080 }
3081 
3083 {
3084  switch(id){
3085  //This is for future deprecatec codec ids, its empty since
3086  //last major bump but will fill up again over time, please don't remove it
3087  default : return id;
3088  }
3089 }
3090 
3091 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
3092 {
3093  AVCodec *p, *experimental = NULL;
3094  p = first_avcodec;
3095  id= remap_deprecated_codec_id(id);
3096  while (p) {
3097  if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
3098  p->id == id) {
3099  if (p->capabilities & AV_CODEC_CAP_EXPERIMENTAL && !experimental) {
3100  experimental = p;
3101  } else
3102  return p;
3103  }
3104  p = p->next;
3105  }
3106  return experimental;
3107 }
3108 
3110 {
3111  return find_encdec(id, 1);
3112 }
3113 
3115 {
3116  AVCodec *p;
3117  if (!name)
3118  return NULL;
3119  p = first_avcodec;
3120  while (p) {
3121  if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
3122  return p;
3123  p = p->next;
3124  }
3125  return NULL;
3126 }
3127 
3129 {
3130  return find_encdec(id, 0);
3131 }
3132 
3134 {
3135  AVCodec *p;
3136  if (!name)
3137  return NULL;
3138  p = first_avcodec;
3139  while (p) {
3140  if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
3141  return p;
3142  p = p->next;
3143  }
3144  return NULL;
3145 }
3146 
3147 const char *avcodec_get_name(enum AVCodecID id)
3148 {
3149  const AVCodecDescriptor *cd;
3150  AVCodec *codec;
3151 
3152  if (id == AV_CODEC_ID_NONE)
3153  return "none";
3154  cd = avcodec_descriptor_get(id);
3155  if (cd)
3156  return cd->name;
3157  av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
3158  codec = avcodec_find_decoder(id);
3159  if (codec)
3160  return codec->name;
3161  codec = avcodec_find_encoder(id);
3162  if (codec)
3163  return codec->name;
3164  return "unknown_codec";
3165 }
3166 
3167 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
3168 {
3169  int i, len, ret = 0;
3170 
3171 #define TAG_PRINT(x) \
3172  (((x) >= '0' && (x) <= '9') || \
3173  ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
3174  ((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_'))
3175 
3176  for (i = 0; i < 4; i++) {
3177  len = snprintf(buf, buf_size,
3178  TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
3179  buf += len;
3180  buf_size = buf_size > len ? buf_size - len : 0;
3181  ret += len;
3182  codec_tag >>= 8;
3183  }
3184  return ret;
3185 }
3186 
3187 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
3188 {
3189  const char *codec_type;
3190  const char *codec_name;
3191  const char *profile = NULL;
3192  int64_t bitrate;
3193  int new_line = 0;
3194  AVRational display_aspect_ratio;
3195  const char *separator = enc->dump_separator ? (const char *)enc->dump_separator : ", ";
3196 
3197  if (!buf || buf_size <= 0)
3198  return;
3199  codec_type = av_get_media_type_string(enc->codec_type);
3200  codec_name = avcodec_get_name(enc->codec_id);
3201  profile = avcodec_profile_name(enc->codec_id, enc->profile);
3202 
3203  snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown",
3204  codec_name);
3205  buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
3206 
3207  if (enc->codec && strcmp(enc->codec->name, codec_name))
3208  snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name);
3209 
3210  if (profile)
3211  snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
3212  if ( enc->codec_type == AVMEDIA_TYPE_VIDEO
3214  && enc->refs)
3215  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3216  ", %d reference frame%s",
3217  enc->refs, enc->refs > 1 ? "s" : "");
3218 
3219  if (enc->codec_tag) {
3220  char tag_buf[32];
3221  av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
3222  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3223  " (%s / 0x%04X)", tag_buf, enc->codec_tag);
3224  }
3225 
3226  switch (enc->codec_type) {
3227  case AVMEDIA_TYPE_VIDEO:
3228  {
3229  char detail[256] = "(";
3230 
3231  av_strlcat(buf, separator, buf_size);
3232 
3233  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3234  "%s", enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
3236  if (enc->bits_per_raw_sample && enc->pix_fmt != AV_PIX_FMT_NONE &&
3238  av_strlcatf(detail, sizeof(detail), "%d bpc, ", enc->bits_per_raw_sample);
3240  av_strlcatf(detail, sizeof(detail), "%s, ",
3242 
3243  if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
3245  enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
3246  if (enc->colorspace != (int)enc->color_primaries ||
3247  enc->colorspace != (int)enc->color_trc) {
3248  new_line = 1;
3249  av_strlcatf(detail, sizeof(detail), "%s/%s/%s, ",
3253  } else
3254  av_strlcatf(detail, sizeof(detail), "%s, ",
3256  }
3257 
3258  if (enc->field_order != AV_FIELD_UNKNOWN) {
3259  const char *field_order = "progressive";
3260  if (enc->field_order == AV_FIELD_TT)
3261  field_order = "top first";
3262  else if (enc->field_order == AV_FIELD_BB)
3263  field_order = "bottom first";
3264  else if (enc->field_order == AV_FIELD_TB)
3265  field_order = "top coded first (swapped)";
3266  else if (enc->field_order == AV_FIELD_BT)
3267  field_order = "bottom coded first (swapped)";
3268 
3269  av_strlcatf(detail, sizeof(detail), "%s, ", field_order);
3270  }
3271 
3272  if (av_log_get_level() >= AV_LOG_VERBOSE &&
3274  av_strlcatf(detail, sizeof(detail), "%s, ",
3276 
3277  if (strlen(detail) > 1) {
3278  detail[strlen(detail) - 2] = 0;
3279  av_strlcatf(buf, buf_size, "%s)", detail);
3280  }
3281  }
3282 
3283  if (enc->width) {
3284  av_strlcat(buf, new_line ? separator : ", ", buf_size);
3285 
3286  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3287  "%dx%d",
3288  enc->width, enc->height);
3289 
3290  if (av_log_get_level() >= AV_LOG_VERBOSE &&
3291  (enc->width != enc->coded_width ||
3292  enc->height != enc->coded_height))
3293  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3294  " (%dx%d)", enc->coded_width, enc->coded_height);
3295 
3296  if (enc->sample_aspect_ratio.num) {
3297  av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3298  enc->width * (int64_t)enc->sample_aspect_ratio.num,
3299  enc->height * (int64_t)enc->sample_aspect_ratio.den,
3300  1024 * 1024);
3301  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3302  " [SAR %d:%d DAR %d:%d]",
3304  display_aspect_ratio.num, display_aspect_ratio.den);
3305  }
3306  if (av_log_get_level() >= AV_LOG_DEBUG) {
3307  int g = av_gcd(enc->time_base.num, enc->time_base.den);
3308  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3309  ", %d/%d",
3310  enc->time_base.num / g, enc->time_base.den / g);
3311  }
3312  }
3313  if (encode) {
3314  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3315  ", q=%d-%d", enc->qmin, enc->qmax);
3316  } else {
3318  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3319  ", Closed Captions");
3321  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3322  ", lossless");
3323  }
3324  break;
3325  case AVMEDIA_TYPE_AUDIO:
3326  av_strlcat(buf, separator, buf_size);
3327 
3328  if (enc->sample_rate) {
3329  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3330  "%d Hz, ", enc->sample_rate);
3331  }
3332  av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
3333  if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
3334  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3335  ", %s", av_get_sample_fmt_name(enc->sample_fmt));
3336  }
3337  if ( enc->bits_per_raw_sample > 0
3339  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3340  " (%d bit)", enc->bits_per_raw_sample);
3341  if (av_log_get_level() >= AV_LOG_VERBOSE) {
3342  if (enc->initial_padding)
3343  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3344  ", delay %d", enc->initial_padding);
3345  if (enc->trailing_padding)
3346  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3347  ", padding %d", enc->trailing_padding);
3348  }
3349  break;
3350  case AVMEDIA_TYPE_DATA:
3351  if (av_log_get_level() >= AV_LOG_DEBUG) {
3352  int g = av_gcd(enc->time_base.num, enc->time_base.den);
3353  if (g)
3354  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3355  ", %d/%d",
3356  enc->time_base.num / g, enc->time_base.den / g);
3357  }
3358  break;
3359  case AVMEDIA_TYPE_SUBTITLE:
3360  if (enc->width)
3361  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3362  ", %dx%d", enc->width, enc->height);
3363  break;
3364  default:
3365  return;
3366  }
3367  if (encode) {
3368  if (enc->flags & AV_CODEC_FLAG_PASS1)
3369  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3370  ", pass 1");
3371  if (enc->flags & AV_CODEC_FLAG_PASS2)
3372  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3373  ", pass 2");
3374  }
3375  bitrate = get_bit_rate(enc);
3376  if (bitrate != 0) {
3377  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3378  ", %"PRId64" kb/s", bitrate / 1000);
3379  } else if (enc->rc_max_rate > 0) {
3380  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3381  ", max. %"PRId64" kb/s", (int64_t)enc->rc_max_rate / 1000);
3382  }
3383 }
3384 
3385 const char *av_get_profile_name(const AVCodec *codec, int profile)
3386 {
3387  const AVProfile *p;
3388  if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
3389  return NULL;
3390 
3391  for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
3392  if (p->profile == profile)
3393  return p->name;
3394 
3395  return NULL;
3396 }
3397 
3399 {
3400  const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
3401  const AVProfile *p;
3402 
3403  if (profile == FF_PROFILE_UNKNOWN || !desc || !desc->profiles)
3404  return NULL;
3405 
3406  for (p = desc->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
3407  if (p->profile == profile)
3408  return p->name;
3409 
3410  return NULL;
3411 }
3412 
3413 unsigned avcodec_version(void)
3414 {
3415 // av_assert0(AV_CODEC_ID_V410==164);
3418 // av_assert0(AV_CODEC_ID_BMV_AUDIO==86071);
3419  av_assert0(AV_CODEC_ID_SRT==94216);
3421 
3422  return LIBAVCODEC_VERSION_INT;
3423 }
3424 
3425 const char *avcodec_configuration(void)
3426 {
3427  return FFMPEG_CONFIGURATION;
3428 }
3429 
3430 const char *avcodec_license(void)
3431 {
3432 #define LICENSE_PREFIX "libavcodec license: "
3433  return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
3434 }
3435 
3437 {
3438  avctx->internal->draining = 0;
3439  avctx->internal->draining_done = 0;
3442  avctx->internal->buffer_pkt_valid = 0;
3443 
3444  if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
3445  ff_thread_flush(avctx);
3446  else if (avctx->codec->flush)
3447  avctx->codec->flush(avctx);
3448 
3449  avctx->pts_correction_last_pts =
3450  avctx->pts_correction_last_dts = INT64_MIN;
3451 
3452  if (!avctx->refcounted_frames)
3453  av_frame_unref(avctx->internal->to_free);
3454 }
3455 
3457 {
3458  switch (codec_id) {
3459  case AV_CODEC_ID_8SVX_EXP:
3460  case AV_CODEC_ID_8SVX_FIB:
3461  case AV_CODEC_ID_ADPCM_CT:
3469  return 4;
3470  case AV_CODEC_ID_DSD_LSBF:
3471  case AV_CODEC_ID_DSD_MSBF:
3474  case AV_CODEC_ID_PCM_ALAW:
3475  case AV_CODEC_ID_PCM_MULAW:
3476  case AV_CODEC_ID_PCM_S8:
3478  case AV_CODEC_ID_PCM_U8:
3479  case AV_CODEC_ID_PCM_ZORK:
3480  case AV_CODEC_ID_SDX2_DPCM:
3481  return 8;
3482  case AV_CODEC_ID_PCM_S16BE:
3484  case AV_CODEC_ID_PCM_S16LE:
3486  case AV_CODEC_ID_PCM_U16BE:
3487  case AV_CODEC_ID_PCM_U16LE:
3488  return 16;
3490  case AV_CODEC_ID_PCM_S24BE:
3491  case AV_CODEC_ID_PCM_S24LE:
3493  case AV_CODEC_ID_PCM_U24BE:
3494  case AV_CODEC_ID_PCM_U24LE:
3495  return 24;
3496  case AV_CODEC_ID_PCM_S32BE:
3497  case AV_CODEC_ID_PCM_S32LE:
3499  case AV_CODEC_ID_PCM_U32BE:
3500  case AV_CODEC_ID_PCM_U32LE:
3501  case AV_CODEC_ID_PCM_F32BE:
3502  case AV_CODEC_ID_PCM_F32LE:
3503  case AV_CODEC_ID_PCM_F24LE:
3504  case AV_CODEC_ID_PCM_F16LE:
3505  return 32;
3506  case AV_CODEC_ID_PCM_F64BE:
3507  case AV_CODEC_ID_PCM_F64LE:
3508  case AV_CODEC_ID_PCM_S64BE:
3509  case AV_CODEC_ID_PCM_S64LE:
3510  return 64;
3511  default:
3512  return 0;
3513  }
3514 }
3515 
3517 {
3518  static const enum AVCodecID map[AV_SAMPLE_FMT_NB][2] = {
3530  };
3531  if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB)
3532  return AV_CODEC_ID_NONE;
3533  if (be < 0 || be > 1)
3534  be = AV_NE(1, 0);
3535  return map[fmt][be];
3536 }
3537 
3539 {
3540  switch (codec_id) {
3542  return 2;
3544  return 3;
3548  case AV_CODEC_ID_ADPCM_SWF:
3549  case AV_CODEC_ID_ADPCM_MS:
3550  return 4;
3551  default:
3552  return av_get_exact_bits_per_sample(codec_id);
3553  }
3554 }
3555 
3556 static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba,
3557  uint32_t tag, int bits_per_coded_sample, int64_t bitrate,
3558  uint8_t * extradata, int frame_size, int frame_bytes)
3559 {
3561  int framecount = (ba > 0 && frame_bytes / ba > 0) ? frame_bytes / ba : 1;
3562 
3563  /* codecs with an exact constant bits per sample */
3564  if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
3565  return (frame_bytes * 8LL) / (bps * ch);
3566  bps = bits_per_coded_sample;
3567 
3568  /* codecs with a fixed packet duration */
3569  switch (id) {
3570  case AV_CODEC_ID_ADPCM_ADX: return 32;
3571  case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
3572  case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
3573  case AV_CODEC_ID_AMR_NB:
3574  case AV_CODEC_ID_EVRC:
3575  case AV_CODEC_ID_GSM:
3576  case AV_CODEC_ID_QCELP:
3577  case AV_CODEC_ID_RA_288: return 160;
3578  case AV_CODEC_ID_AMR_WB:
3579  case AV_CODEC_ID_GSM_MS: return 320;
3580  case AV_CODEC_ID_MP1: return 384;
3581  case AV_CODEC_ID_ATRAC1: return 512;
3582  case AV_CODEC_ID_ATRAC3: return 1024 * framecount;
3583  case AV_CODEC_ID_ATRAC3P: return 2048;
3584  case AV_CODEC_ID_MP2:
3585  case AV_CODEC_ID_MUSEPACK7: return 1152;
3586  case AV_CODEC_ID_AC3: return 1536;
3587  }
3588 
3589  if (sr > 0) {
3590  /* calc from sample rate */
3591  if (id == AV_CODEC_ID_TTA)
3592  return 256 * sr / 245;
3593  else if (id == AV_CODEC_ID_DST)
3594  return 588 * sr / 44100;
3595 
3596  if (ch > 0) {
3597  /* calc from sample rate and channels */
3598  if (id == AV_CODEC_ID_BINKAUDIO_DCT)
3599  return (480 << (sr / 22050)) / ch;
3600  }
3601  }
3602 
3603  if (ba > 0) {
3604  /* calc from block_align */
3605  if (id == AV_CODEC_ID_SIPR) {
3606  switch (ba) {
3607  case 20: return 160;
3608  case 19: return 144;
3609  case 29: return 288;
3610  case 37: return 480;
3611  }
3612  } else if (id == AV_CODEC_ID_ILBC) {
3613  switch (ba) {
3614  case 38: return 160;
3615  case 50: return 240;
3616  }
3617  }
3618  }
3619 
3620  if (frame_bytes > 0) {
3621  /* calc from frame_bytes only */
3622  if (id == AV_CODEC_ID_TRUESPEECH)
3623  return 240 * (frame_bytes / 32);
3624  if (id == AV_CODEC_ID_NELLYMOSER)
3625  return 256 * (frame_bytes / 64);
3626  if (id == AV_CODEC_ID_RA_144)
3627  return 160 * (frame_bytes / 20);
3628  if (id == AV_CODEC_ID_G723_1)
3629  return 240 * (frame_bytes / 24);
3630 
3631  if (bps > 0) {
3632  /* calc from frame_bytes and bits_per_coded_sample */
3633  if (id == AV_CODEC_ID_ADPCM_G726)
3634  return frame_bytes * 8 / bps;
3635  }
3636 
3637  if (ch > 0 && ch < INT_MAX/16) {
3638  /* calc from frame_bytes and channels */
3639  switch (id) {
3640  case AV_CODEC_ID_ADPCM_AFC:
3641  return frame_bytes / (9 * ch) * 16;
3642  case AV_CODEC_ID_ADPCM_PSX:
3643  case AV_CODEC_ID_ADPCM_DTK:
3644  return frame_bytes / (16 * ch) * 28;
3645  case AV_CODEC_ID_ADPCM_4XM:
3648  return (frame_bytes - 4 * ch) * 2 / ch;
3650  return (frame_bytes - 4) * 2 / ch;
3652  return (frame_bytes - 8) * 2 / ch;
3653  case AV_CODEC_ID_ADPCM_THP:
3655  if (extradata)
3656  return frame_bytes * 14 / (8 * ch);
3657  break;
3658  case AV_CODEC_ID_ADPCM_XA:
3659  return (frame_bytes / 128) * 224 / ch;
3661  return (frame_bytes - 6 - ch) / ch;
3662  case AV_CODEC_ID_ROQ_DPCM:
3663  return (frame_bytes - 8) / ch;
3664  case AV_CODEC_ID_XAN_DPCM:
3665  return (frame_bytes - 2 * ch) / ch;
3666  case AV_CODEC_ID_MACE3:
3667  return 3 * frame_bytes / ch;
3668  case AV_CODEC_ID_MACE6:
3669  return 6 * frame_bytes / ch;
3670  case AV_CODEC_ID_PCM_LXF:
3671  return 2 * (frame_bytes / (5 * ch));
3672  case AV_CODEC_ID_IAC:
3673  case AV_CODEC_ID_IMC:
3674  return 4 * frame_bytes / ch;
3675  }
3676 
3677  if (tag) {
3678  /* calc from frame_bytes, channels, and codec_tag */
3679  if (id == AV_CODEC_ID_SOL_DPCM) {
3680  if (tag == 3)
3681  return frame_bytes / ch;
3682  else
3683  return frame_bytes * 2 / ch;
3684  }
3685  }
3686 
3687  if (ba > 0) {
3688  /* calc from frame_bytes, channels, and block_align */
3689  int blocks = frame_bytes / ba;
3690  switch (id) {
3692  if (bps < 2 || bps > 5)
3693  return 0;
3694  return blocks * (1 + (ba - 4 * ch) / (bps * ch) * 8);
3696  return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
3698  return blocks * (1 + (ba - 4 * ch) * 2 / ch);
3700  return blocks * ((ba - 4 * ch) * 2 / ch);
3701  case AV_CODEC_ID_ADPCM_MS:
3702  return blocks * (2 + (ba - 7 * ch) * 2 / ch);
3704  return blocks * (ba - 16) * 2 / ch;
3705  }
3706  }
3707 
3708  if (bps > 0) {
3709  /* calc from frame_bytes, channels, and bits_per_coded_sample */
3710  switch (id) {
3711  case AV_CODEC_ID_PCM_DVD:
3712  if(bps<4)
3713  return 0;
3714  return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
3716  if(bps<4)
3717  return 0;
3718  return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
3719  case AV_CODEC_ID_S302M:
3720  return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
3721  }
3722  }
3723  }
3724  }
3725 
3726  /* Fall back on using frame_size */
3727  if (frame_size > 1 && frame_bytes)
3728  return frame_size;
3729 
3730  //For WMA we currently have no other means to calculate duration thus we
3731  //do it here by assuming CBR, which is true for all known cases.
3732  if (bitrate > 0 && frame_bytes > 0 && sr > 0 && ba > 1) {
3733  if (id == AV_CODEC_ID_WMAV1 || id == AV_CODEC_ID_WMAV2)
3734  return (frame_bytes * 8LL * sr) / bitrate;
3735  }
3736 
3737  return 0;
3738 }
3739 
3740 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
3741 {
3742  return get_audio_frame_duration(avctx->codec_id, avctx->sample_rate,
3743  avctx->channels, avctx->block_align,
3744  avctx->codec_tag, avctx->bits_per_coded_sample,
3745  avctx->bit_rate, avctx->extradata, avctx->frame_size,
3746  frame_bytes);
3747 }
3748 
3750 {
3751  return get_audio_frame_duration(par->codec_id, par->sample_rate,
3752  par->channels, par->block_align,
3753  par->codec_tag, par->bits_per_coded_sample,
3754  par->bit_rate, par->extradata, par->frame_size,
3755  frame_bytes);
3756 }
3757 
3758 #if !HAVE_THREADS
3760 {
3761  return -1;
3762 }
3763 
3764 #endif
3765 
3766 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
3767 {
3768  unsigned int n = 0;
3769 
3770  while (v >= 0xff) {
3771  *s++ = 0xff;
3772  v -= 0xff;
3773  n++;
3774  }
3775  *s = v;
3776  n++;
3777  return n;
3778 }
3779 
3780 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
3781 {
3782  int i;
3783  for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
3784  return i;
3785 }
3786 
3787 #if FF_API_MISSING_SAMPLE
3789 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
3790 {
3791  av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your FFmpeg "
3792  "version to the newest one from Git. If the problem still "
3793  "occurs, it means that your file has a feature which has not "
3794  "been implemented.\n", feature);
3795  if(want_sample)
3797 }
3798 
3799 void av_log_ask_for_sample(void *avc, const char *msg, ...)
3800 {
3801  va_list argument_list;
3802 
3803  va_start(argument_list, msg);
3804 
3805  if (msg)
3806  av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
3807  av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
3808  "of this file to ftp://upload.ffmpeg.org/incoming/ "
3809  "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)\n");
3810 
3811  va_end(argument_list);
3812 }
3814 #endif /* FF_API_MISSING_SAMPLE */
3815 
3818 
3820 {
3821  AVHWAccel **p = last_hwaccel;
3822  hwaccel->next = NULL;
3823  while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, hwaccel))
3824  p = &(*p)->next;
3825  last_hwaccel = &hwaccel->next;
3826 }
3827 
3829 {
3830  return hwaccel ? hwaccel->next : first_hwaccel;
3831 }
3832 
3833 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
3834 {
3835  if (lockmgr_cb) {
3836  // There is no good way to rollback a failure to destroy the
3837  // mutex, so we ignore failures.
3840  lockmgr_cb = NULL;
3841  codec_mutex = NULL;
3842  avformat_mutex = NULL;
3843  }
3844 
3845  if (cb) {
3846  void *new_codec_mutex = NULL;
3847  void *new_avformat_mutex = NULL;
3848  int err;
3849  if (err = cb(&new_codec_mutex, AV_LOCK_CREATE)) {
3850  return err > 0 ? AVERROR_UNKNOWN : err;
3851  }
3852  if (err = cb(&new_avformat_mutex, AV_LOCK_CREATE)) {
3853  // Ignore failures to destroy the newly created mutex.
3854  cb(&new_codec_mutex, AV_LOCK_DESTROY);
3855  return err > 0 ? AVERROR_UNKNOWN : err;
3856  }
3857  lockmgr_cb = cb;
3858  codec_mutex = new_codec_mutex;
3859  avformat_mutex = new_avformat_mutex;
3860  }
3861 
3862  return 0;
3863 }
3864 
3865 int ff_lock_avcodec(AVCodecContext *log_ctx, const AVCodec *codec)
3866 {
3867  if (codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE || !codec->init)
3868  return 0;
3869 
3870  if (lockmgr_cb) {
3872  return -1;
3873  }
3874 
3876  av_log(log_ctx, AV_LOG_ERROR,
3877  "Insufficient thread locking. At least %d threads are "
3878  "calling avcodec_open2() at the same time right now.\n",
3880  if (!lockmgr_cb)
3881  av_log(log_ctx, AV_LOG_ERROR, "No lock manager is set, please see av_lockmgr_register()\n");
3882  ff_avcodec_locked = 1;
3883  ff_unlock_avcodec(codec);
3884  return AVERROR(EINVAL);
3885  }
3887  ff_avcodec_locked = 1;
3888  return 0;
3889 }
3890 
3891 int ff_unlock_avcodec(const AVCodec *codec)
3892 {
3893  if (codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE || !codec->init)
3894  return 0;
3895 
3897  ff_avcodec_locked = 0;
3899  if (lockmgr_cb) {
3901  return -1;
3902  }
3903 
3904  return 0;
3905 }
3906 
3908 {
3909  if (lockmgr_cb) {
3911  return -1;
3912  }
3913  return 0;
3914 }
3915 
3917 {
3918  if (lockmgr_cb) {
3920  return -1;
3921  }
3922  return 0;
3923 }
3924 
3925 unsigned int avpriv_toupper4(unsigned int x)
3926 {
3927  return av_toupper(x & 0xFF) +
3928  (av_toupper((x >> 8) & 0xFF) << 8) +
3929  (av_toupper((x >> 16) & 0xFF) << 16) +
3930 ((unsigned)av_toupper((x >> 24) & 0xFF) << 24);
3931 }
3932 
3934 {
3935  int ret;
3936 
3937  dst->owner = src->owner;
3938 
3939  ret = av_frame_ref(dst->f, src->f);
3940  if (ret < 0)
3941  return ret;
3942 
3943  av_assert0(!dst->progress);
3944 
3945  if (src->progress &&
3946  !(dst->progress = av_buffer_ref(src->progress))) {
3947  ff_thread_release_buffer(dst->owner, dst);
3948  return AVERROR(ENOMEM);
3949  }
3950 
3951  return 0;
3952 }
3953 
3954 #if !HAVE_THREADS
3955 
3957 {
3958  return ff_get_format(avctx, fmt);
3959 }
3960 
3962 {
3963  f->owner = avctx;
3964  return ff_get_buffer(avctx, f->f, flags);
3965 }
3966 
3968 {
3969  if (f->f)
3970  av_frame_unref(f->f);
3971 }
3972 
3974 {
3975 }
3976 
3977 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
3978 {
3979 }
3980 
3981 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
3982 {
3983 }
3984 
3986 {
3987  return 1;
3988 }
3989 
3991 {
3992  return 0;
3993 }
3994 
3996 {
3997 }
3998 
3999 void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
4000 {
4001 }
4002 
4003 void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n)
4004 {
4005 }
4006 
4007 #endif
4008 
4010 {
4011  return !!s->internal;
4012 }
4013 
4014 int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf)
4015 {
4016  int ret;
4017  char *str;
4018 
4019  ret = av_bprint_finalize(buf, &str);
4020  if (ret < 0)
4021  return ret;
4022  if (!av_bprint_is_complete(buf)) {
4023  av_free(str);
4024  return AVERROR(ENOMEM);
4025  }
4026 
4027  avctx->extradata = str;
4028  /* Note: the string is NUL terminated (so extradata can be read as a
4029  * string), but the ending character is not accounted in the size (in
4030  * binary formats you are likely not supposed to mux that character). When
4031  * extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
4032  * zeros. */
4033  avctx->extradata_size = buf->len;
4034  return 0;
4035 }
4036 
4037 const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
4038  const uint8_t *end,
4039  uint32_t *av_restrict state)
4040 {
4041  int i;
4042 
4043  av_assert0(p <= end);
4044  if (p >= end)
4045  return end;
4046 
4047  for (i = 0; i < 3; i++) {
4048  uint32_t tmp = *state << 8;
4049  *state = tmp + *(p++);
4050  if (tmp == 0x100 || p == end)
4051  return p;
4052  }
4053 
4054  while (p < end) {
4055  if (p[-1] > 1 ) p += 3;
4056  else if (p[-2] ) p += 2;
4057  else if (p[-3]|(p[-1]-1)) p++;
4058  else {
4059  p++;
4060  break;
4061  }
4062  }
4063 
4064  p = FFMIN(p, end) - 4;
4065  *state = AV_RB32(p);
4066 
4067  return p + 4;
4068 }
4069 
4071 {
4072  AVCPBProperties *props = av_mallocz(sizeof(AVCPBProperties));
4073  if (!props)
4074  return NULL;
4075 
4076  if (size)
4077  *size = sizeof(*props);
4078 
4079  props->vbv_delay = UINT64_MAX;
4080 
4081  return props;
4082 }
4083 
4085 {
4087  AVCPBProperties *props;
4088  size_t size;
4089 
4090  props = av_cpb_properties_alloc(&size);
4091  if (!props)
4092  return NULL;
4093 
4094  tmp = av_realloc_array(avctx->coded_side_data, avctx->nb_coded_side_data + 1, sizeof(*tmp));
4095  if (!tmp) {
4096  av_freep(&props);
4097  return NULL;
4098  }
4099 
4100  avctx->coded_side_data = tmp;
4101  avctx->nb_coded_side_data++;
4102 
4104  avctx->coded_side_data[avctx->nb_coded_side_data - 1].data = (uint8_t*)props;
4105  avctx->coded_side_data[avctx->nb_coded_side_data - 1].size = size;
4106 
4107  return props;
4108 }
4109 
4111 {
4112  av_freep(&par->extradata);
4113 
4114  memset(par, 0, sizeof(*par));
4115 
4117  par->codec_id = AV_CODEC_ID_NONE;
4118  par->format = -1;
4125  par->sample_aspect_ratio = (AVRational){ 0, 1 };
4126  par->profile = FF_PROFILE_UNKNOWN;
4127  par->level = FF_LEVEL_UNKNOWN;
4128 }
4129 
4131 {
4132  AVCodecParameters *par = av_mallocz(sizeof(*par));
4133 
4134  if (!par)
4135  return NULL;
4137  return par;
4138 }
4139 
4141 {
4142  AVCodecParameters *par = *ppar;
4143 
4144  if (!par)
4145  return;
4147 
4148  av_freep(ppar);
4149 }
4150 
4152 {
4154  memcpy(dst, src, sizeof(*dst));
4155 
4156  dst->extradata = NULL;
4157  dst->extradata_size = 0;
4158  if (src->extradata) {
4160  if (!dst->extradata)
4161  return AVERROR(ENOMEM);
4162  memcpy(dst->extradata, src->extradata, src->extradata_size);
4163  dst->extradata_size = src->extradata_size;
4164  }
4165 
4166  return 0;
4167 }
4168 
4170  const AVCodecContext *codec)
4171 {
4173 
4174  par->codec_type = codec->codec_type;
4175  par->codec_id = codec->codec_id;
4176  par->codec_tag = codec->codec_tag;
4177 
4178  par->bit_rate = codec->bit_rate;
4181  par->profile = codec->profile;
4182  par->level = codec->level;
4183 
4184  switch (par->codec_type) {
4185  case AVMEDIA_TYPE_VIDEO:
4186  par->format = codec->pix_fmt;
4187  par->width = codec->width;
4188  par->height = codec->height;
4189  par->field_order = codec->field_order;
4190  par->color_range = codec->color_range;
4191  par->color_primaries = codec->color_primaries;
4192  par->color_trc = codec->color_trc;
4193  par->color_space = codec->colorspace;
4196  par->video_delay = codec->has_b_frames;
4197  break;
4198  case AVMEDIA_TYPE_AUDIO:
4199  par->format = codec->sample_fmt;
4200  par->channel_layout = codec->channel_layout;
4201  par->channels = codec->channels;
4202  par->sample_rate = codec->sample_rate;
4203  par->block_align = codec->block_align;
4204  par->frame_size = codec->frame_size;
4205  par->initial_padding = codec->initial_padding;
4206  par->trailing_padding = codec->trailing_padding;
4207  par->seek_preroll = codec->seek_preroll;
4208  break;
4209  case AVMEDIA_TYPE_SUBTITLE:
4210  par->width = codec->width;
4211  par->height = codec->height;
4212  break;
4213  }
4214 
4215  if (codec->extradata) {
4217  if (!par->extradata)
4218  return AVERROR(ENOMEM);
4219  memcpy(par->extradata, codec->extradata, codec->extradata_size);
4220  par->extradata_size = codec->extradata_size;
4221  }
4222 
4223  return 0;
4224 }
4225 
4227  const AVCodecParameters *par)
4228 {
4229  codec->codec_type = par->codec_type;
4230  codec->codec_id = par->codec_id;
4231  codec->codec_tag = par->codec_tag;
4232 
4233  codec->bit_rate = par->bit_rate;
4236  codec->profile = par->profile;
4237  codec->level = par->level;
4238 
4239  switch (par->codec_type) {
4240  case AVMEDIA_TYPE_VIDEO:
4241  codec->pix_fmt = par->format;
4242  codec->width = par->width;
4243  codec->height = par->height;
4244  codec->field_order = par->field_order;
4245  codec->color_range = par->color_range;
4246  codec->color_primaries = par->color_primaries;
4247  codec->color_trc = par->color_trc;
4248  codec->colorspace = par->color_space;
4251  codec->has_b_frames = par->video_delay;
4252  break;
4253  case AVMEDIA_TYPE_AUDIO:
4254  codec->sample_fmt = par->format;
4255  codec->channel_layout = par->channel_layout;
4256  codec->channels = par->channels;
4257  codec->sample_rate = par->sample_rate;
4258  codec->block_align = par->block_align;
4259  codec->frame_size = par->frame_size;
4260  codec->delay =
4261  codec->initial_padding = par->initial_padding;
4262  codec->trailing_padding = par->trailing_padding;
4263  codec->seek_preroll = par->seek_preroll;
4264  break;
4265  case AVMEDIA_TYPE_SUBTITLE:
4266  codec->width = par->width;
4267  codec->height = par->height;
4268  break;
4269  }
4270 
4271  if (par->extradata) {
4272  av_freep(&codec->extradata);
4274  if (!codec->extradata)
4275  return AVERROR(ENOMEM);
4276  memcpy(codec->extradata, par->extradata, par->extradata_size);
4277  codec->extradata_size = par->extradata_size;
4278  }
4279 
4280  return 0;
4281 }
4282 
4283 int ff_alloc_a53_sei(const AVFrame *frame, size_t prefix_len,
4284  void **data, size_t *sei_size)
4285 {
4286  AVFrameSideData *side_data = NULL;
4287  uint8_t *sei_data;
4288 
4289  if (frame)
4290  side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_A53_CC);
4291 
4292  if (!side_data) {
4293  *data = NULL;
4294  return 0;
4295  }
4296 
4297  *sei_size = side_data->size + 11;
4298  *data = av_mallocz(*sei_size + prefix_len);
4299  if (!*data)
4300  return AVERROR(ENOMEM);
4301  sei_data = (uint8_t*)*data + prefix_len;
4302 
4303  // country code
4304  sei_data[0] = 181;
4305  sei_data[1] = 0;
4306  sei_data[2] = 49;
4307 
4308  /**
4309  * 'GA94' is standard in North America for ATSC, but hard coding
4310  * this style may not be the right thing to do -- other formats
4311  * do exist. This information is not available in the side_data
4312  * so we are going with this right now.
4313  */
4314  AV_WL32(sei_data + 3, MKTAG('G', 'A', '9', '4'));
4315  sei_data[7] = 3;
4316  sei_data[8] = ((side_data->size/3) & 0x1f) | 0x40;
4317  sei_data[9] = 0;
4318 
4319  memcpy(sei_data + 10, side_data->data, side_data->size);
4320 
4321  sei_data[side_data->size+10] = 255;
4322 
4323  return 0;
4324 }
#define AV_PIX_FMT_FLAG_PAL
Pixel format has a palette in data[1], values are indexes in this palette.
Definition: pixdesc.h:132
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
Definition: internal.h:48
#define FF_SANE_NB_CHANNELS
Definition: internal.h:73
#define FF_COMPLIANCE_EXPERIMENTAL
Allow nonstandardized experimental things.
Definition: avcodec.h:2911
static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
Definition: utils.c:2090
packed YUV 4:2:2, 16bpp, Cb Y0 Cr Y1
Definition: pixfmt.h:82
void av_frame_set_channels(AVFrame *frame, int val)
enum AVChromaLocation chroma_location
Definition: avcodec.h:4090
float, planar
Definition: samplefmt.h:69
#define UTF8_MAX_BYTES
Definition: utils.c:2493
#define FF_SUB_CHARENC_MODE_PRE_DECODER
the AVPacket data needs to be recoded to UTF-8 before being fed to the decoder, requires iconv ...
Definition: avcodec.h:3451
#define NULL
Definition: coverity.c:32
const struct AVCodec * codec
Definition: avcodec.h:1696
planar YUV 4:2:2, 18bpp, (1 Cr & Cb sample per 2x1 Y samples), big-endian
Definition: pixfmt.h:177
AVRational framerate
Definition: avcodec.h:3387
const char const char void * val
Definition: avisynth_c.h:771
#define avpriv_atomic_int_add_and_fetch
Definition: atomic_gcc.h:50
enum AVFieldOrder field_order
Video only.
Definition: avcodec.h:4081
static int64_t get_bit_rate(AVCodecContext *ctx)
Definition: utils.c:1207
const AVCodecDescriptor * codec_descriptor
AVCodecDescriptor Code outside libavcodec should access this field using: av_codec_{get,set}_codec_descriptor(avctx)
Definition: avcodec.h:3412
static AVCodec * find_encdec(enum AVCodecID id, int encoder)
Definition: utils.c:3091
planar YUV 4:4:0,20bpp, (1 Cr & Cb sample per 1x2 Y samples), little-endian
Definition: pixfmt.h:289
const char * s
Definition: avisynth_c.h:768
planar YUV 4:4:4,42bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
Definition: pixfmt.h:266
uint32_t fourcc
Definition: hwcontext_qsv.c:90
enum AVColorTransferCharacteristic color_trc
Definition: avcodec.h:4088
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
Number of sample formats. DO NOT USE if linking dynamically.
Definition: samplefmt.h:74
static enum AVPixelFormat pix_fmt
#define AV_NUM_DATA_POINTERS
Definition: frame.h:191
void av_bprintf(AVBPrint *buf, const char *fmt,...)
Definition: bprint.c:94
int ff_thread_video_encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet_ptr)
int64_t av_frame_get_pkt_duration(const AVFrame *frame)
static int shift(int a, int b)
Definition: sonic.c:82
AVPacketSideDataType
Definition: avcodec.h:1367
planar YUV 4:2:0,21bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
Definition: pixfmt.h:259
static av_always_inline int pthread_mutex_destroy(pthread_mutex_t *mutex)
Definition: os2threads.h:106
#define FF_SUB_CHARENC_MODE_AUTOMATIC
libavcodec will select the mode itself
Definition: avcodec.h:3450
int64_t pts_correction_num_faulty_dts
Number of incorrect PTS values so far.
Definition: avcodec.h:3431
int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
Set various frame properties from the codec context / packet data.
Definition: utils.c:871
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:124
#define GET_UTF8(val, GET_BYTE, ERROR)
Convert a UTF-8 character (up to 4 bytes) to its 32-bit UCS-4 encoded form.
Definition: common.h:361
unsigned int fourcc
Definition: raw.h:35
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2332
This structure describes decoded (raw) audio or video data.
Definition: frame.h:190
int(* send_packet)(AVCodecContext *avctx, const AVPacket *avpkt)
Definition: avcodec.h:3717
AVCodec * avcodec_find_encoder(enum AVCodecID id)
Find a registered encoder with a matching codec ID.
Definition: utils.c:3109
int(* init)(AVCodecContext *avctx)
Initialize the hwaccel private data.
Definition: avcodec.h:3857
int stride_align[AV_NUM_DATA_POINTERS]
Definition: internal.h:97
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
planar YUV 4:2:2,28bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
Definition: pixfmt.h:263
planar YUV 4:2:0, 15bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
Definition: pixfmt.h:170
This side data must be associated with an audio frame and corresponds to enum AVAudioServiceType defi...
Definition: frame.h:112
enum AVCodecID id
Definition: mxfenc.c:104
#define AV_CODEC_FLAG2_SKIP_MANUAL
Do not skip samples and export skip information as frame side data.
Definition: avcodec.h:942
int coded_width
Bitstream width / height, may be different from width/height e.g.
Definition: avcodec.h:1889
int capabilities
Hardware accelerated codec capabilities.
Definition: avcodec.h:3773
const char * fmt
Definition: avisynth_c.h:769
void(* flush)(AVCodecContext *)
Flush buffers.
Definition: avcodec.h:3724
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:3833
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:67
misc image utilities
Unlock the mutex.
Definition: avcodec.h:6169
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
AVFrame * f
Definition: thread.h:36
int64_t bit_rate
the average bitrate
Definition: avcodec.h:1752
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2372
AVFrame * to_free
Definition: internal.h:134
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:64
int64_t pos
byte position in stream, -1 if unknown
Definition: avcodec.h:1632
enum AVColorRange av_frame_get_color_range(const AVFrame *frame)
AVBufferRef * buf[AV_NUM_DATA_POINTERS]
AVBuffer references backing the data for this frame.
Definition: frame.h:373
const char * g
Definition: vf_curves.c:112
const char * desc
Definition: nvenc.c:60
int width
Definition: internal.h:96
#define LIBAVCODEC_VERSION_MICRO
Definition: version.h:32
planar YUV 4:4:4, 27bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
Definition: pixfmt.h:173
AVRational sample_aspect_ratio
Video only.
Definition: avcodec.h:4076
int rc_initial_buffer_occupancy
Number of bits which should be loaded into the rc buffer before decoding starts.
Definition: avcodec.h:2726
static int do_decode(AVCodecContext *avctx, AVPacket *pkt)
Definition: utils.c:2768
int attribute_align_arg avcodec_receive_packet(AVCodecContext *avctx, AVPacket *avpkt)
Read encoded data from the encoder.
Definition: utils.c:2992
planar YUV 4:4:4,36bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
Definition: pixfmt.h:264
This side data should be associated with a video stream and contains Stereoscopic 3D information in f...
Definition: avcodec.h:1436
void av_opt_set_defaults(void *s)
Set the values of all AVOption fields to their default values.
Definition: opt.c:1293
const char * avcodec_configuration(void)
Return the libavcodec build-time configuration.
Definition: utils.c:3425
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition: avcodec.h:2424
int nb_extended_buf
Number of elements in extended_buf.
Definition: frame.h:391
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: avcodec.h:4000
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:180
int ff_unlock_avcodec(const AVCodec *codec)
Definition: utils.c:3891
int num
Numerator.
Definition: rational.h:59
#define FF_SUB_CHARENC_MODE_DO_NOTHING
do nothing (demuxer outputs a stream supposed to be already in UTF-8, or the codec is bitmap for inst...
Definition: avcodec.h:3449
int size
Definition: avcodec.h:1613
const char * b
Definition: vf_curves.c:113
const char * avcodec_license(void)
Return the libavcodec license.
Definition: utils.c:3430
enum AVPixelFormat pix_fmt
Supported pixel format.
Definition: avcodec.h:3767
static int get_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
Definition: utils.c:900
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:2098
static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
Pad last frame with silence.
Definition: utils.c:1772
AVPacket * pkt
Current packet as passed into the decoder, to avoid having to pass the packet into every function...
Definition: internal.h:144
planar YUV 4:4:4 40bpp, (1 Cr & Cb sample per 1x1 Y & A samples, little-endian)
Definition: pixfmt.h:201
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:1809
double, planar
Definition: samplefmt.h:70
enum AVMediaType codec_type
Definition: rtp.c:37
#define AV_CODEC_PROP_TEXT_SUB
Subtitle codec is text based.
Definition: avcodec.h:729
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1915
enum AVPixelFormat pix_fmt
Definition: raw.h:34
int samples
Definition: internal.h:101
void av_frame_set_pkt_duration(AVFrame *frame, int64_t val)
int av_dict_copy(AVDictionary **dst, const AVDictionary *src, int flags)
Copy entries from one AVDictionary struct into another.
Definition: dict.c:217
int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx, AVFrame *frame, int *got_frame_ptr, const AVPacket *avpkt)
Decode the audio frame of size avpkt->size from avpkt->data into frame.
Definition: utils.c:2317
enum AVPixelFormat format
The pixel format identifying the underlying HW surface type.
Definition: hwcontext.h:202
Mastering display metadata associated with a video frame.
Definition: frame.h:118
unsigned num_rects
Definition: avcodec.h:3980
int avpriv_codec_get_cap_skip_frame_fill_param(const AVCodec *codec)
Definition: utils.c:1197
void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
Same behaviour av_fast_malloc but the buffer has additional AV_INPUT_BUFFER_PADDING_SIZE at the end w...
Definition: utils.c:120
planar GBR 4:4:4 36bpp, little-endian
Definition: pixfmt.h:269
The following 12 formats have the disadvantage of needing 1 format for each bit depth.
Definition: pixfmt.h:167
#define AV_CODEC_CAP_EXPERIMENTAL
Codec is experimental and is thus avoided in favor of non experimental encoders.
Definition: avcodec.h:1019
void av_frame_move_ref(AVFrame *dst, AVFrame *src)
Move everything contained in src to dst and reset src.
Definition: frame.c:519
mpegvideo header.
enum AVMediaType type
Definition: avcodec.h:3633
static int convert_sub_to_old_ass_form(AVSubtitle *sub, const AVPacket *pkt, AVRational tb)
Definition: utils.c:2586
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:3167
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:252
AVBufferPool * pools[4]
Pools for each data plane.
Definition: internal.h:90
int(* decode)(AVCodecContext *, void *outdata, int *outdata_size, AVPacket *avpkt)
Definition: avcodec.h:3703
static AVPacket pkt
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:3089
enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
Wrapper around get_format() for frame-multithreaded codecs.
Definition: utils.c:3956
int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
Converts AVChromaLocation to swscale x/y chroma position.
Definition: utils.c:447
#define AV_CODEC_CAP_AUTO_THREADS
Codec supports avctx->thread_count == 0 (auto).
Definition: avcodec.h:1039
int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub, int *got_sub_ptr, AVPacket *avpkt)
Decode a subtitle message.
Definition: utils.c:2644
int trailing_padding
Audio only.
Definition: avcodec.h:4136
#define src
Definition: vp8dsp.c:254
void av_frame_set_pkt_size(AVFrame *frame, int val)
int profile
profile
Definition: avcodec.h:3193
planar GBR 4:4:4 36bpp, big-endian
Definition: pixfmt.h:268
AVCodec.
Definition: avcodec.h:3620
planar YUV 4:2:0, 24bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
Definition: pixfmt.h:139
int block_align
number of bytes per packet if constant and known or 0 Used by some WAV based audio codecs...
Definition: avcodec.h:2486
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:92
This struct describes the properties of an encoded stream.
Definition: avcodec.h:3992
AVLockOp
Lock operation used by lockmgr.
Definition: avcodec.h:6166
int av_bprint_finalize(AVBPrint *buf, char **ret_str)
Finalize a print buffer.
Definition: bprint.c:235
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:210
char * text
0 terminated plain UTF-8 text
Definition: avcodec.h:3964
enum AVColorSpace color_space
Definition: avcodec.h:4089
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:194
const char * av_color_space_name(enum AVColorSpace space)
Definition: pixdesc.c:2663
Macro definitions for various function/variable attributes.
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:3789
static void * codec_mutex
Definition: utils.c:117
int frame_size
Audio only.
Definition: avcodec.h:4121
Mastering display metadata (based on SMPTE-2086:2014).
Definition: avcodec.h:1544
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avcodec.h:1824
int av_get_channel_layout_nb_channels(uint64_t channel_layout)
Return the number of channels in the channel layout.
AVFrameSideData * av_frame_get_side_data(const AVFrame *frame, enum AVFrameSideDataType type)
Definition: frame.c:663
AVSubtitleRect ** rects
Definition: avcodec.h:3981
int av_codec_is_decoder(const AVCodec *codec)
Definition: utils.c:173
enum AVAudioServiceType audio_service_type
Type of service that the audio stream conveys.
Definition: avcodec.h:2514
void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
Definition: utils.c:3999
int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels, enum AVSampleFormat sample_fmt, const uint8_t *buf, int buf_size, int align)
Fill AVFrame audio data and linesize pointers.
Definition: utils.c:470
int av_codec_is_encoder(const AVCodec *codec)
Definition: utils.c:168
uint64_t vbv_delay
The delay between the time the packet this structure is associated with is received and the time when...
Definition: avcodec.h:1346
planar YUV 4:2:0 22.5bpp, (1 Cr & Cb sample per 2x2 Y & A samples), little-endian ...
Definition: pixfmt.h:191
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:432
#define FF_LEVEL_UNKNOWN
Definition: avcodec.h:3292
struct AVHWAccel * hwaccel
Hardware accelerator in use.
Definition: avcodec.h:3008
static int volatile entangled_thread_counter
Definition: utils.c:116
#define AV_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:989
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
planar GBRA 4:4:4:4 64bpp, big-endian
Definition: pixfmt.h:230
Public dictionary API.
static struct @249 state
planar YUV 4:2:0 40bpp, (1 Cr & Cb sample per 2x2 Y & A samples, big-endian)
Definition: pixfmt.h:202
static double cb(void *priv, double x, double y)
Definition: vf_geq.c:97
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
Definition: internal.h:40
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:102