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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_size(width, height, 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 ((ret = update_frame_pool(avctx, frame)) < 0)
728  return ret;
729 
730  switch (avctx->codec_type) {
731  case AVMEDIA_TYPE_VIDEO:
732  return video_get_buffer(avctx, frame);
733  case AVMEDIA_TYPE_AUDIO:
734  return audio_get_buffer(avctx, frame);
735  default:
736  return -1;
737  }
738 }
739 
741 {
742  int size;
743  const uint8_t *side_metadata;
744 
745  AVDictionary **frame_md = avpriv_frame_get_metadatap(frame);
746 
747  side_metadata = av_packet_get_side_data(avpkt,
749  return av_packet_unpack_dictionary(side_metadata, size, frame_md);
750 }
751 
753 {
754  AVPacket *pkt = avctx->internal->pkt;
755  int i;
756  static const struct {
757  enum AVPacketSideDataType packet;
759  } sd[] = {
765  };
766 
767  if (pkt) {
768  frame->pkt_pts = pkt->pts;
769  av_frame_set_pkt_pos (frame, pkt->pos);
770  av_frame_set_pkt_duration(frame, pkt->duration);
771  av_frame_set_pkt_size (frame, pkt->size);
772 
773  for (i = 0; i < FF_ARRAY_ELEMS(sd); i++) {
774  int size;
775  uint8_t *packet_sd = av_packet_get_side_data(pkt, sd[i].packet, &size);
776  if (packet_sd) {
777  AVFrameSideData *frame_sd = av_frame_new_side_data(frame,
778  sd[i].frame,
779  size);
780  if (!frame_sd)
781  return AVERROR(ENOMEM);
782 
783  memcpy(frame_sd->data, packet_sd, size);
784  }
785  }
786  add_metadata_from_side_data(pkt, frame);
787  } else {
788  frame->pkt_pts = AV_NOPTS_VALUE;
789  av_frame_set_pkt_pos (frame, -1);
790  av_frame_set_pkt_duration(frame, 0);
791  av_frame_set_pkt_size (frame, -1);
792  }
793  frame->reordered_opaque = avctx->reordered_opaque;
794 
796  frame->color_primaries = avctx->color_primaries;
797  if (frame->color_trc == AVCOL_TRC_UNSPECIFIED)
798  frame->color_trc = avctx->color_trc;
800  av_frame_set_colorspace(frame, avctx->colorspace);
802  av_frame_set_color_range(frame, avctx->color_range);
804  frame->chroma_location = avctx->chroma_sample_location;
805 
806  switch (avctx->codec->type) {
807  case AVMEDIA_TYPE_VIDEO:
808  frame->format = avctx->pix_fmt;
809  if (!frame->sample_aspect_ratio.num)
811 
812  if (frame->width && frame->height &&
813  av_image_check_sar(frame->width, frame->height,
814  frame->sample_aspect_ratio) < 0) {
815  av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
816  frame->sample_aspect_ratio.num,
817  frame->sample_aspect_ratio.den);
818  frame->sample_aspect_ratio = (AVRational){ 0, 1 };
819  }
820 
821  break;
822  case AVMEDIA_TYPE_AUDIO:
823  if (!frame->sample_rate)
824  frame->sample_rate = avctx->sample_rate;
825  if (frame->format < 0)
826  frame->format = avctx->sample_fmt;
827  if (!frame->channel_layout) {
828  if (avctx->channel_layout) {
830  avctx->channels) {
831  av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
832  "configuration.\n");
833  return AVERROR(EINVAL);
834  }
835 
836  frame->channel_layout = avctx->channel_layout;
837  } else {
838  if (avctx->channels > FF_SANE_NB_CHANNELS) {
839  av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
840  avctx->channels);
841  return AVERROR(ENOSYS);
842  }
843  }
844  }
845  av_frame_set_channels(frame, avctx->channels);
846  break;
847  }
848  return 0;
849 }
850 
852 {
853  return ff_init_buffer_info(avctx, frame);
854 }
855 
857 {
858  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
859  int i;
860  int num_planes = av_pix_fmt_count_planes(frame->format);
862  int flags = desc ? desc->flags : 0;
863  if (num_planes == 1 && (flags & AV_PIX_FMT_FLAG_PAL))
864  num_planes = 2;
865  for (i = 0; i < num_planes; i++) {
866  av_assert0(frame->data[i]);
867  }
868  // For now do not enforce anything for palette of pseudopal formats
869  if (num_planes == 1 && (flags & AV_PIX_FMT_FLAG_PSEUDOPAL))
870  num_planes = 2;
871  // For formats without data like hwaccel allow unused pointers to be non-NULL.
872  for (i = num_planes; num_planes > 0 && i < FF_ARRAY_ELEMS(frame->data); i++) {
873  if (frame->data[i])
874  av_log(avctx, AV_LOG_ERROR, "Buffer returned by get_buffer2() did not zero unused plane pointers\n");
875  frame->data[i] = NULL;
876  }
877  }
878 }
879 
881 {
882  const AVHWAccel *hwaccel = avctx->hwaccel;
883  int override_dimensions = 1;
884  int ret;
885 
886  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
887  if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0 || avctx->pix_fmt<0) {
888  av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
889  return AVERROR(EINVAL);
890  }
891 
892  if (frame->width <= 0 || frame->height <= 0) {
893  frame->width = FFMAX(avctx->width, AV_CEIL_RSHIFT(avctx->coded_width, avctx->lowres));
894  frame->height = FFMAX(avctx->height, AV_CEIL_RSHIFT(avctx->coded_height, avctx->lowres));
895  override_dimensions = 0;
896  }
897 
898  if (frame->data[0] || frame->data[1] || frame->data[2] || frame->data[3]) {
899  av_log(avctx, AV_LOG_ERROR, "pic->data[*]!=NULL in get_buffer_internal\n");
900  return AVERROR(EINVAL);
901  }
902  }
903  ret = ff_decode_frame_props(avctx, frame);
904  if (ret < 0)
905  return ret;
906 
907  if (hwaccel) {
908  if (hwaccel->alloc_frame) {
909  ret = hwaccel->alloc_frame(avctx, frame);
910  goto end;
911  }
912  } else
913  avctx->sw_pix_fmt = avctx->pix_fmt;
914 
915  ret = avctx->get_buffer2(avctx, frame, flags);
916  if (ret >= 0)
917  validate_avframe_allocation(avctx, frame);
918 
919 end:
920  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions) {
921  frame->width = avctx->width;
922  frame->height = avctx->height;
923  }
924 
925  return ret;
926 }
927 
929 {
930  int ret = get_buffer_internal(avctx, frame, flags);
931  if (ret < 0) {
932  av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
933  frame->width = frame->height = 0;
934  }
935  return ret;
936 }
937 
939 {
940  AVFrame *tmp;
941  int ret;
942 
944 
945  if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
946  av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
947  frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt));
948  av_frame_unref(frame);
949  }
950 
951  ff_init_buffer_info(avctx, frame);
952 
953  if (!frame->data[0])
954  return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
955 
956  if (av_frame_is_writable(frame))
957  return ff_decode_frame_props(avctx, frame);
958 
959  tmp = av_frame_alloc();
960  if (!tmp)
961  return AVERROR(ENOMEM);
962 
963  av_frame_move_ref(tmp, frame);
964 
965  ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
966  if (ret < 0) {
967  av_frame_free(&tmp);
968  return ret;
969  }
970 
971  av_frame_copy(frame, tmp);
972  av_frame_free(&tmp);
973 
974  return 0;
975 }
976 
978 {
979  int ret = reget_buffer_internal(avctx, frame);
980  if (ret < 0)
981  av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
982  return ret;
983 }
984 
985 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
986 {
987  int i;
988 
989  for (i = 0; i < count; i++) {
990  int r = func(c, (char *)arg + i * size);
991  if (ret)
992  ret[i] = r;
993  }
994  return 0;
995 }
996 
997 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
998 {
999  int i;
1000 
1001  for (i = 0; i < count; i++) {
1002  int r = func(c, arg, i, 0);
1003  if (ret)
1004  ret[i] = r;
1005  }
1006  return 0;
1007 }
1008 
1010  unsigned int fourcc)
1011 {
1012  while (tags->pix_fmt >= 0) {
1013  if (tags->fourcc == fourcc)
1014  return tags->pix_fmt;
1015  tags++;
1016  }
1017  return AV_PIX_FMT_NONE;
1018 }
1019 
1021 {
1022  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
1023  return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
1024 }
1025 
1027 {
1028  while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
1029  ++fmt;
1030  return fmt[0];
1031 }
1032 
1034  enum AVPixelFormat pix_fmt)
1035 {
1036  AVHWAccel *hwaccel = NULL;
1037 
1038  while ((hwaccel = av_hwaccel_next(hwaccel)))
1039  if (hwaccel->id == codec_id
1040  && hwaccel->pix_fmt == pix_fmt)
1041  return hwaccel;
1042  return NULL;
1043 }
1044 
1045 static int setup_hwaccel(AVCodecContext *avctx,
1046  const enum AVPixelFormat fmt,
1047  const char *name)
1048 {
1049  AVHWAccel *hwa = find_hwaccel(avctx->codec_id, fmt);
1050  int ret = 0;
1051 
1052  if (avctx->active_thread_type & FF_THREAD_FRAME) {
1053  av_log(avctx, AV_LOG_WARNING,
1054  "Hardware accelerated decoding with frame threading is known to be unstable and its use is discouraged.\n");
1055  }
1056 
1057  if (!hwa) {
1058  av_log(avctx, AV_LOG_ERROR,
1059  "Could not find an AVHWAccel for the pixel format: %s",
1060  name);
1061  return AVERROR(ENOENT);
1062  }
1063 
1066  av_log(avctx, AV_LOG_WARNING, "Ignoring experimental hwaccel: %s\n",
1067  hwa->name);
1068  return AVERROR_PATCHWELCOME;
1069  }
1070 
1071  if (hwa->priv_data_size) {
1073  if (!avctx->internal->hwaccel_priv_data)
1074  return AVERROR(ENOMEM);
1075  }
1076 
1077  if (hwa->init) {
1078  ret = hwa->init(avctx);
1079  if (ret < 0) {
1081  return ret;
1082  }
1083  }
1084 
1085  avctx->hwaccel = hwa;
1086 
1087  return 0;
1088 }
1089 
1091 {
1092  const AVPixFmtDescriptor *desc;
1093  enum AVPixelFormat *choices;
1094  enum AVPixelFormat ret;
1095  unsigned n = 0;
1096 
1097  while (fmt[n] != AV_PIX_FMT_NONE)
1098  ++n;
1099 
1100  av_assert0(n >= 1);
1101  avctx->sw_pix_fmt = fmt[n - 1];
1103 
1104  choices = av_malloc_array(n + 1, sizeof(*choices));
1105  if (!choices)
1106  return AV_PIX_FMT_NONE;
1107 
1108  memcpy(choices, fmt, (n + 1) * sizeof(*choices));
1109 
1110  for (;;) {
1111  if (avctx->hwaccel && avctx->hwaccel->uninit)
1112  avctx->hwaccel->uninit(avctx);
1114  avctx->hwaccel = NULL;
1115 
1116  ret = avctx->get_format(avctx, choices);
1117 
1118  desc = av_pix_fmt_desc_get(ret);
1119  if (!desc) {
1120  ret = AV_PIX_FMT_NONE;
1121  break;
1122  }
1123 
1124  if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
1125  break;
1126 #if FF_API_CAP_VDPAU
1128  break;
1129 #endif
1130 
1131  if (!setup_hwaccel(avctx, ret, desc->name))
1132  break;
1133 
1134  /* Remove failed hwaccel from choices */
1135  for (n = 0; choices[n] != ret; n++)
1136  av_assert0(choices[n] != AV_PIX_FMT_NONE);
1137 
1138  do
1139  choices[n] = choices[n + 1];
1140  while (choices[n++] != AV_PIX_FMT_NONE);
1141  }
1142 
1143  av_freep(&choices);
1144  return ret;
1145 }
1146 
1147 MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
1148 MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor)
1149 MAKE_ACCESSORS(AVCodecContext, codec, int, lowres)
1150 MAKE_ACCESSORS(AVCodecContext, codec, int, seek_preroll)
1151 MAKE_ACCESSORS(AVCodecContext, codec, uint16_t*, chroma_intra_matrix)
1152 
1153 unsigned av_codec_get_codec_properties(const AVCodecContext *codec)
1154 {
1155  return codec->properties;
1156 }
1157 
1159 {
1160  return codec->max_lowres;
1161 }
1162 
1165 }
1166 
1168 {
1169  memset(sub, 0, sizeof(*sub));
1170  sub->pts = AV_NOPTS_VALUE;
1171 }
1172 
1174 {
1175  int64_t bit_rate;
1176  int bits_per_sample;
1177 
1178  switch (ctx->codec_type) {
1179  case AVMEDIA_TYPE_VIDEO:
1180  case AVMEDIA_TYPE_DATA:
1181  case AVMEDIA_TYPE_SUBTITLE:
1183  bit_rate = ctx->bit_rate;
1184  break;
1185  case AVMEDIA_TYPE_AUDIO:
1186  bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1187  bit_rate = bits_per_sample ? ctx->sample_rate * (int64_t)ctx->channels * bits_per_sample : ctx->bit_rate;
1188  break;
1189  default:
1190  bit_rate = 0;
1191  break;
1192  }
1193  return bit_rate;
1194 }
1195 
1196 int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1197 {
1198  int ret = 0;
1199 
1200  ff_unlock_avcodec(codec);
1201 
1202  ret = avcodec_open2(avctx, codec, options);
1203 
1204  ff_lock_avcodec(avctx, codec);
1205  return ret;
1206 }
1207 
1208 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1209 {
1210  int ret = 0;
1211  AVDictionary *tmp = NULL;
1212  const AVPixFmtDescriptor *pixdesc;
1213 
1214  if (avcodec_is_open(avctx))
1215  return 0;
1216 
1217  if ((!codec && !avctx->codec)) {
1218  av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
1219  return AVERROR(EINVAL);
1220  }
1221  if ((codec && avctx->codec && codec != avctx->codec)) {
1222  av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
1223  "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
1224  return AVERROR(EINVAL);
1225  }
1226  if (!codec)
1227  codec = avctx->codec;
1228 
1229  if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
1230  return AVERROR(EINVAL);
1231 
1232  if (options)
1233  av_dict_copy(&tmp, *options, 0);
1234 
1235  ret = ff_lock_avcodec(avctx, codec);
1236  if (ret < 0)
1237  return ret;
1238 
1239  avctx->internal = av_mallocz(sizeof(AVCodecInternal));
1240  if (!avctx->internal) {
1241  ret = AVERROR(ENOMEM);
1242  goto end;
1243  }
1244 
1245  avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
1246  if (!avctx->internal->pool) {
1247  ret = AVERROR(ENOMEM);
1248  goto free_and_end;
1249  }
1250 
1251  avctx->internal->to_free = av_frame_alloc();
1252  if (!avctx->internal->to_free) {
1253  ret = AVERROR(ENOMEM);
1254  goto free_and_end;
1255  }
1256 
1257  avctx->internal->buffer_frame = av_frame_alloc();
1258  if (!avctx->internal->buffer_frame) {
1259  ret = AVERROR(ENOMEM);
1260  goto free_and_end;
1261  }
1262 
1263  avctx->internal->buffer_pkt = av_packet_alloc();
1264  if (!avctx->internal->buffer_pkt) {
1265  ret = AVERROR(ENOMEM);
1266  goto free_and_end;
1267  }
1268 
1269  if (codec->priv_data_size > 0) {
1270  if (!avctx->priv_data) {
1271  avctx->priv_data = av_mallocz(codec->priv_data_size);
1272  if (!avctx->priv_data) {
1273  ret = AVERROR(ENOMEM);
1274  goto end;
1275  }
1276  if (codec->priv_class) {
1277  *(const AVClass **)avctx->priv_data = codec->priv_class;
1279  }
1280  }
1281  if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
1282  goto free_and_end;
1283  } else {
1284  avctx->priv_data = NULL;
1285  }
1286  if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
1287  goto free_and_end;
1288 
1289  if (avctx->codec_whitelist && av_match_list(codec->name, avctx->codec_whitelist, ',') <= 0) {
1290  av_log(avctx, AV_LOG_ERROR, "Codec (%s) not on whitelist \'%s\'\n", codec->name, avctx->codec_whitelist);
1291  ret = AVERROR(EINVAL);
1292  goto free_and_end;
1293  }
1294 
1295  // only call ff_set_dimensions() for non H.264/VP6F/DXV codecs so as not to overwrite previously setup dimensions
1296  if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
1297  (avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F || avctx->codec_id == AV_CODEC_ID_DXV))) {
1298  if (avctx->coded_width && avctx->coded_height)
1299  ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
1300  else if (avctx->width && avctx->height)
1301  ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
1302  if (ret < 0)
1303  goto free_and_end;
1304  }
1305 
1306  if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
1307  && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
1308  || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
1309  av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
1310  ff_set_dimensions(avctx, 0, 0);
1311  }
1312 
1313  if (avctx->width > 0 && avctx->height > 0) {
1314  if (av_image_check_sar(avctx->width, avctx->height,
1315  avctx->sample_aspect_ratio) < 0) {
1316  av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
1317  avctx->sample_aspect_ratio.num,
1318  avctx->sample_aspect_ratio.den);
1319  avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
1320  }
1321  }
1322 
1323  /* if the decoder init function was already called previously,
1324  * free the already allocated subtitle_header before overwriting it */
1325  if (av_codec_is_decoder(codec))
1326  av_freep(&avctx->subtitle_header);
1327 
1328  if (avctx->channels > FF_SANE_NB_CHANNELS) {
1329  ret = AVERROR(EINVAL);
1330  goto free_and_end;
1331  }
1332 
1333  avctx->codec = codec;
1334  if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
1335  avctx->codec_id == AV_CODEC_ID_NONE) {
1336  avctx->codec_type = codec->type;
1337  avctx->codec_id = codec->id;
1338  }
1339  if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
1340  && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
1341  av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
1342  ret = AVERROR(EINVAL);
1343  goto free_and_end;
1344  }
1345  avctx->frame_number = 0;
1347 
1348  if ((avctx->codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) &&
1350  const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
1351  AVCodec *codec2;
1352  av_log(avctx, AV_LOG_ERROR,
1353  "The %s '%s' is experimental but experimental codecs are not enabled, "
1354  "add '-strict %d' if you want to use it.\n",
1355  codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
1356  codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
1357  if (!(codec2->capabilities & AV_CODEC_CAP_EXPERIMENTAL))
1358  av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
1359  codec_string, codec2->name);
1360  ret = AVERROR_EXPERIMENTAL;
1361  goto free_and_end;
1362  }
1363 
1364  if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
1365  (!avctx->time_base.num || !avctx->time_base.den)) {
1366  avctx->time_base.num = 1;
1367  avctx->time_base.den = avctx->sample_rate;
1368  }
1369 
1370  if (!HAVE_THREADS)
1371  av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
1372 
1373  if (CONFIG_FRAME_THREAD_ENCODER && av_codec_is_encoder(avctx->codec)) {
1374  ff_unlock_avcodec(codec); //we will instantiate a few encoders thus kick the counter to prevent false detection of a problem
1375  ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
1376  ff_lock_avcodec(avctx, codec);
1377  if (ret < 0)
1378  goto free_and_end;
1379  }
1380 
1381  if (HAVE_THREADS
1383  ret = ff_thread_init(avctx);
1384  if (ret < 0) {
1385  goto free_and_end;
1386  }
1387  }
1388  if (!HAVE_THREADS && !(codec->capabilities & AV_CODEC_CAP_AUTO_THREADS))
1389  avctx->thread_count = 1;
1390 
1391  if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
1392  av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
1393  avctx->codec->max_lowres);
1394  ret = AVERROR(EINVAL);
1395  goto free_and_end;
1396  }
1397 
1398 #if FF_API_VISMV
1399  if (avctx->debug_mv)
1400  av_log(avctx, AV_LOG_WARNING, "The 'vismv' option is deprecated, "
1401  "see the codecview filter instead.\n");
1402 #endif
1403 
1404  if (av_codec_is_encoder(avctx->codec)) {
1405  int i;
1406 #if FF_API_CODED_FRAME
1408  avctx->coded_frame = av_frame_alloc();
1409  if (!avctx->coded_frame) {
1410  ret = AVERROR(ENOMEM);
1411  goto free_and_end;
1412  }
1414 #endif
1415 
1416  if (avctx->time_base.num <= 0 || avctx->time_base.den <= 0) {
1417  av_log(avctx, AV_LOG_ERROR, "The encoder timebase is not set.\n");
1418  ret = AVERROR(EINVAL);
1419  goto free_and_end;
1420  }
1421 
1422  if (avctx->codec->sample_fmts) {
1423  for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
1424  if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
1425  break;
1426  if (avctx->channels == 1 &&
1429  avctx->sample_fmt = avctx->codec->sample_fmts[i];
1430  break;
1431  }
1432  }
1433  if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
1434  char buf[128];
1435  snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt);
1436  av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n",
1437  (char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf));
1438  ret = AVERROR(EINVAL);
1439  goto free_and_end;
1440  }
1441  }
1442  if (avctx->codec->pix_fmts) {
1443  for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
1444  if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
1445  break;
1446  if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE
1447  && !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG)
1449  char buf[128];
1450  snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt);
1451  av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n",
1452  (char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf));
1453  ret = AVERROR(EINVAL);
1454  goto free_and_end;
1455  }
1456  if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ420P ||
1457  avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ411P ||
1458  avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ422P ||
1459  avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ440P ||
1460  avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ444P)
1461  avctx->color_range = AVCOL_RANGE_JPEG;
1462  }
1463  if (avctx->codec->supported_samplerates) {
1464  for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
1465  if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
1466  break;
1467  if (avctx->codec->supported_samplerates[i] == 0) {
1468  av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
1469  avctx->sample_rate);
1470  ret = AVERROR(EINVAL);
1471  goto free_and_end;
1472  }
1473  }
1474  if (avctx->sample_rate < 0) {
1475  av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
1476  avctx->sample_rate);
1477  ret = AVERROR(EINVAL);
1478  goto free_and_end;
1479  }
1480  if (avctx->codec->channel_layouts) {
1481  if (!avctx->channel_layout) {
1482  av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n");
1483  } else {
1484  for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
1485  if (avctx->channel_layout == avctx->codec->channel_layouts[i])
1486  break;
1487  if (avctx->codec->channel_layouts[i] == 0) {
1488  char buf[512];
1489  av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1490  av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf);
1491  ret = AVERROR(EINVAL);
1492  goto free_and_end;
1493  }
1494  }
1495  }
1496  if (avctx->channel_layout && avctx->channels) {
1497  int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1498  if (channels != avctx->channels) {
1499  char buf[512];
1500  av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1501  av_log(avctx, AV_LOG_ERROR,
1502  "Channel layout '%s' with %d channels does not match number of specified channels %d\n",
1503  buf, channels, avctx->channels);
1504  ret = AVERROR(EINVAL);
1505  goto free_and_end;
1506  }
1507  } else if (avctx->channel_layout) {
1509  }
1510  if (avctx->channels < 0) {
1511  av_log(avctx, AV_LOG_ERROR, "Specified number of channels %d is not supported\n",
1512  avctx->channels);
1513  ret = AVERROR(EINVAL);
1514  goto free_and_end;
1515  }
1516  if(avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1517  pixdesc = av_pix_fmt_desc_get(avctx->pix_fmt);
1518  if ( avctx->bits_per_raw_sample < 0
1519  || (avctx->bits_per_raw_sample > 8 && pixdesc->comp[0].depth <= 8)) {
1520  av_log(avctx, AV_LOG_WARNING, "Specified bit depth %d not possible with the specified pixel formats depth %d\n",
1521  avctx->bits_per_raw_sample, pixdesc->comp[0].depth);
1522  avctx->bits_per_raw_sample = pixdesc->comp[0].depth;
1523  }
1524  if (avctx->width <= 0 || avctx->height <= 0) {
1525  av_log(avctx, AV_LOG_ERROR, "dimensions not set\n");
1526  ret = AVERROR(EINVAL);
1527  goto free_and_end;
1528  }
1529  }
1530  if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
1531  && avctx->bit_rate>0 && avctx->bit_rate<1000) {
1532  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);
1533  }
1534 
1535  if (!avctx->rc_initial_buffer_occupancy)
1536  avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
1537 
1538  if (avctx->ticks_per_frame && avctx->time_base.num &&
1539  avctx->ticks_per_frame > INT_MAX / avctx->time_base.num) {
1540  av_log(avctx, AV_LOG_ERROR,
1541  "ticks_per_frame %d too large for the timebase %d/%d.",
1542  avctx->ticks_per_frame,
1543  avctx->time_base.num,
1544  avctx->time_base.den);
1545  goto free_and_end;
1546  }
1547 
1548  if (avctx->hw_frames_ctx) {
1549  AVHWFramesContext *frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
1550  if (frames_ctx->format != avctx->pix_fmt) {
1551  av_log(avctx, AV_LOG_ERROR,
1552  "Mismatching AVCodecContext.pix_fmt and AVHWFramesContext.format\n");
1553  ret = AVERROR(EINVAL);
1554  goto free_and_end;
1555  }
1556  }
1557  }
1558 
1560  avctx->pts_correction_num_faulty_dts = 0;
1561  avctx->pts_correction_last_pts =
1562  avctx->pts_correction_last_dts = INT64_MIN;
1563 
1564  if ( !CONFIG_GRAY && avctx->flags & AV_CODEC_FLAG_GRAY
1566  av_log(avctx, AV_LOG_WARNING,
1567  "gray decoding requested but not enabled at configuration time\n");
1568 
1569  if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
1570  || avctx->internal->frame_thread_encoder)) {
1571  ret = avctx->codec->init(avctx);
1572  if (ret < 0) {
1573  goto free_and_end;
1574  }
1575  }
1576 
1577  ret=0;
1578 
1579 #if FF_API_AUDIOENC_DELAY
1580  if (av_codec_is_encoder(avctx->codec))
1581  avctx->delay = avctx->initial_padding;
1582 #endif
1583 
1584  if (av_codec_is_decoder(avctx->codec)) {
1585  if (!avctx->bit_rate)
1586  avctx->bit_rate = get_bit_rate(avctx);
1587  /* validate channel layout from the decoder */
1588  if (avctx->channel_layout) {
1589  int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1590  if (!avctx->channels)
1591  avctx->channels = channels;
1592  else if (channels != avctx->channels) {
1593  char buf[512];
1594  av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1595  av_log(avctx, AV_LOG_WARNING,
1596  "Channel layout '%s' with %d channels does not match specified number of channels %d: "
1597  "ignoring specified channel layout\n",
1598  buf, channels, avctx->channels);
1599  avctx->channel_layout = 0;
1600  }
1601  }
1602  if (avctx->channels && avctx->channels < 0 ||
1603  avctx->channels > FF_SANE_NB_CHANNELS) {
1604  ret = AVERROR(EINVAL);
1605  goto free_and_end;
1606  }
1607  if (avctx->sub_charenc) {
1608  if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
1609  av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
1610  "supported with subtitles codecs\n");
1611  ret = AVERROR(EINVAL);
1612  goto free_and_end;
1613  } else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
1614  av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
1615  "subtitles character encoding will be ignored\n",
1616  avctx->codec_descriptor->name);
1618  } else {
1619  /* input character encoding is set for a text based subtitle
1620  * codec at this point */
1623 
1625 #if CONFIG_ICONV
1626  iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
1627  if (cd == (iconv_t)-1) {
1628  ret = AVERROR(errno);
1629  av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
1630  "with input character encoding \"%s\"\n", avctx->sub_charenc);
1631  goto free_and_end;
1632  }
1633  iconv_close(cd);
1634 #else
1635  av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
1636  "conversion needs a libavcodec built with iconv support "
1637  "for this codec\n");
1638  ret = AVERROR(ENOSYS);
1639  goto free_and_end;
1640 #endif
1641  }
1642  }
1643  }
1644 
1645 #if FF_API_AVCTX_TIMEBASE
1646  if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
1647  avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
1648 #endif
1649  }
1650  if (codec->priv_data_size > 0 && avctx->priv_data && codec->priv_class) {
1651  av_assert0(*(const AVClass **)avctx->priv_data == codec->priv_class);
1652  }
1653 
1654 end:
1655  ff_unlock_avcodec(codec);
1656  if (options) {
1658  *options = tmp;
1659  }
1660 
1661  return ret;
1662 free_and_end:
1663  if (avctx->codec &&
1664  (avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP))
1665  avctx->codec->close(avctx);
1666 
1667  if (codec->priv_class && codec->priv_data_size)
1668  av_opt_free(avctx->priv_data);
1669  av_opt_free(avctx);
1670 
1671 #if FF_API_CODED_FRAME
1673  av_frame_free(&avctx->coded_frame);
1675 #endif
1676 
1677  av_dict_free(&tmp);
1678  av_freep(&avctx->priv_data);
1679  if (avctx->internal) {
1680  av_packet_free(&avctx->internal->buffer_pkt);
1681  av_frame_free(&avctx->internal->buffer_frame);
1682  av_frame_free(&avctx->internal->to_free);
1683  av_freep(&avctx->internal->pool);
1684  }
1685  av_freep(&avctx->internal);
1686  avctx->codec = NULL;
1687  goto end;
1688 }
1689 
1690 int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
1691 {
1692  if (avpkt->size < 0) {
1693  av_log(avctx, AV_LOG_ERROR, "Invalid negative user packet size %d\n", avpkt->size);
1694  return AVERROR(EINVAL);
1695  }
1697  av_log(avctx, AV_LOG_ERROR, "Invalid minimum required packet size %"PRId64" (max allowed is %d)\n",
1698  size, INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE);
1699  return AVERROR(EINVAL);
1700  }
1701 
1702  if (avctx && 2*min_size < size) { // FIXME The factor needs to be finetuned
1703  av_assert0(!avpkt->data || avpkt->data != avctx->internal->byte_buffer);
1704  if (!avpkt->data || avpkt->size < size) {
1706  avpkt->data = avctx->internal->byte_buffer;
1707  avpkt->size = avctx->internal->byte_buffer_size;
1708  }
1709  }
1710 
1711  if (avpkt->data) {
1712  AVBufferRef *buf = avpkt->buf;
1713 
1714  if (avpkt->size < size) {
1715  av_log(avctx, AV_LOG_ERROR, "User packet is too small (%d < %"PRId64")\n", avpkt->size, size);
1716  return AVERROR(EINVAL);
1717  }
1718 
1719  av_init_packet(avpkt);
1720  avpkt->buf = buf;
1721  avpkt->size = size;
1722  return 0;
1723  } else {
1724  int ret = av_new_packet(avpkt, size);
1725  if (ret < 0)
1726  av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %"PRId64"\n", size);
1727  return ret;
1728  }
1729 }
1730 
1732 {
1733  return ff_alloc_packet2(NULL, avpkt, size, 0);
1734 }
1735 
1736 /**
1737  * Pad last frame with silence.
1738  */
1739 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1740 {
1741  AVFrame *frame = NULL;
1742  int ret;
1743 
1744  if (!(frame = av_frame_alloc()))
1745  return AVERROR(ENOMEM);
1746 
1747  frame->format = src->format;
1748  frame->channel_layout = src->channel_layout;
1750  frame->nb_samples = s->frame_size;
1751  ret = av_frame_get_buffer(frame, 32);
1752  if (ret < 0)
1753  goto fail;
1754 
1755  ret = av_frame_copy_props(frame, src);
1756  if (ret < 0)
1757  goto fail;
1758 
1759  if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1760  src->nb_samples, s->channels, s->sample_fmt)) < 0)
1761  goto fail;
1762  if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1763  frame->nb_samples - src->nb_samples,
1764  s->channels, s->sample_fmt)) < 0)
1765  goto fail;
1766 
1767  *dst = frame;
1768 
1769  return 0;
1770 
1771 fail:
1772  av_frame_free(&frame);
1773  return ret;
1774 }
1775 
1776 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1777  AVPacket *avpkt,
1778  const AVFrame *frame,
1779  int *got_packet_ptr)
1780 {
1781  AVFrame *extended_frame = NULL;
1782  AVFrame *padded_frame = NULL;
1783  int ret;
1784  AVPacket user_pkt = *avpkt;
1785  int needs_realloc = !user_pkt.data;
1786 
1787  *got_packet_ptr = 0;
1788 
1789  if (!avctx->codec->encode2) {
1790  av_log(avctx, AV_LOG_ERROR, "This encoder requires using the avcodec_send_frame() API.\n");
1791  return AVERROR(ENOSYS);
1792  }
1793 
1794  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY) && !frame) {
1795  av_packet_unref(avpkt);
1796  av_init_packet(avpkt);
1797  return 0;
1798  }
1799 
1800  /* ensure that extended_data is properly set */
1801  if (frame && !frame->extended_data) {
1802  if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1803  avctx->channels > AV_NUM_DATA_POINTERS) {
1804  av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1805  "with more than %d channels, but extended_data is not set.\n",
1807  return AVERROR(EINVAL);
1808  }
1809  av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1810 
1811  extended_frame = av_frame_alloc();
1812  if (!extended_frame)
1813  return AVERROR(ENOMEM);
1814 
1815  memcpy(extended_frame, frame, sizeof(AVFrame));
1816  extended_frame->extended_data = extended_frame->data;
1817  frame = extended_frame;
1818  }
1819 
1820  /* extract audio service type metadata */
1821  if (frame) {
1823  if (sd && sd->size >= sizeof(enum AVAudioServiceType))
1824  avctx->audio_service_type = *(enum AVAudioServiceType*)sd->data;
1825  }
1826 
1827  /* check for valid frame size */
1828  if (frame) {
1830  if (frame->nb_samples > avctx->frame_size) {
1831  av_log(avctx, AV_LOG_ERROR, "more samples than frame size (avcodec_encode_audio2)\n");
1832  ret = AVERROR(EINVAL);
1833  goto end;
1834  }
1835  } else if (!(avctx->codec->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1836  if (frame->nb_samples < avctx->frame_size &&
1837  !avctx->internal->last_audio_frame) {
1838  ret = pad_last_frame(avctx, &padded_frame, frame);
1839  if (ret < 0)
1840  goto end;
1841 
1842  frame = padded_frame;
1843  avctx->internal->last_audio_frame = 1;
1844  }
1845 
1846  if (frame->nb_samples != avctx->frame_size) {
1847  av_log(avctx, AV_LOG_ERROR, "nb_samples (%d) != frame_size (%d) (avcodec_encode_audio2)\n", frame->nb_samples, avctx->frame_size);
1848  ret = AVERROR(EINVAL);
1849  goto end;
1850  }
1851  }
1852  }
1853 
1854  av_assert0(avctx->codec->encode2);
1855 
1856  ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1857  if (!ret) {
1858  if (*got_packet_ptr) {
1859  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY)) {
1860  if (avpkt->pts == AV_NOPTS_VALUE)
1861  avpkt->pts = frame->pts;
1862  if (!avpkt->duration)
1863  avpkt->duration = ff_samples_to_time_base(avctx,
1864  frame->nb_samples);
1865  }
1866  avpkt->dts = avpkt->pts;
1867  } else {
1868  avpkt->size = 0;
1869  }
1870  }
1871  if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1872  needs_realloc = 0;
1873  if (user_pkt.data) {
1874  if (user_pkt.size >= avpkt->size) {
1875  memcpy(user_pkt.data, avpkt->data, avpkt->size);
1876  } else {
1877  av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1878  avpkt->size = user_pkt.size;
1879  ret = -1;
1880  }
1881  avpkt->buf = user_pkt.buf;
1882  avpkt->data = user_pkt.data;
1883  } else {
1884  if (av_dup_packet(avpkt) < 0) {
1885  ret = AVERROR(ENOMEM);
1886  }
1887  }
1888  }
1889 
1890  if (!ret) {
1891  if (needs_realloc && avpkt->data) {
1892  ret = av_buffer_realloc(&avpkt->buf, avpkt->size + AV_INPUT_BUFFER_PADDING_SIZE);
1893  if (ret >= 0)
1894  avpkt->data = avpkt->buf->data;
1895  }
1896 
1897  avctx->frame_number++;
1898  }
1899 
1900  if (ret < 0 || !*got_packet_ptr) {
1901  av_packet_unref(avpkt);
1902  av_init_packet(avpkt);
1903  goto end;
1904  }
1905 
1906  /* NOTE: if we add any audio encoders which output non-keyframe packets,
1907  * this needs to be moved to the encoders, but for now we can do it
1908  * here to simplify things */
1909  avpkt->flags |= AV_PKT_FLAG_KEY;
1910 
1911 end:
1912  av_frame_free(&padded_frame);
1913  av_free(extended_frame);
1914 
1915 #if FF_API_AUDIOENC_DELAY
1916  avctx->delay = avctx->initial_padding;
1917 #endif
1918 
1919  return ret;
1920 }
1921 
1922 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
1923  AVPacket *avpkt,
1924  const AVFrame *frame,
1925  int *got_packet_ptr)
1926 {
1927  int ret;
1928  AVPacket user_pkt = *avpkt;
1929  int needs_realloc = !user_pkt.data;
1930 
1931  *got_packet_ptr = 0;
1932 
1933  if (!avctx->codec->encode2) {
1934  av_log(avctx, AV_LOG_ERROR, "This encoder requires using the avcodec_send_frame() API.\n");
1935  return AVERROR(ENOSYS);
1936  }
1937 
1938  if(CONFIG_FRAME_THREAD_ENCODER &&
1940  return ff_thread_video_encode_frame(avctx, avpkt, frame, got_packet_ptr);
1941 
1942  if ((avctx->flags&AV_CODEC_FLAG_PASS1) && avctx->stats_out)
1943  avctx->stats_out[0] = '\0';
1944 
1945  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY) && !frame) {
1946  av_packet_unref(avpkt);
1947  av_init_packet(avpkt);
1948  avpkt->size = 0;
1949  return 0;
1950  }
1951 
1952  if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
1953  return AVERROR(EINVAL);
1954 
1955  if (frame && frame->format == AV_PIX_FMT_NONE)
1956  av_log(avctx, AV_LOG_WARNING, "AVFrame.format is not set\n");
1957  if (frame && (frame->width == 0 || frame->height == 0))
1958  av_log(avctx, AV_LOG_WARNING, "AVFrame.width or height is not set\n");
1959 
1960  av_assert0(avctx->codec->encode2);
1961 
1962  ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1963  av_assert0(ret <= 0);
1964 
1965  if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1966  needs_realloc = 0;
1967  if (user_pkt.data) {
1968  if (user_pkt.size >= avpkt->size) {
1969  memcpy(user_pkt.data, avpkt->data, avpkt->size);
1970  } else {
1971  av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1972  avpkt->size = user_pkt.size;
1973  ret = -1;
1974  }
1975  avpkt->buf = user_pkt.buf;
1976  avpkt->data = user_pkt.data;
1977  } else {
1978  if (av_dup_packet(avpkt) < 0) {
1979  ret = AVERROR(ENOMEM);
1980  }
1981  }
1982  }
1983 
1984  if (!ret) {
1985  if (!*got_packet_ptr)
1986  avpkt->size = 0;
1987  else if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
1988  avpkt->pts = avpkt->dts = frame->pts;
1989 
1990  if (needs_realloc && avpkt->data) {
1991  ret = av_buffer_realloc(&avpkt->buf, avpkt->size + AV_INPUT_BUFFER_PADDING_SIZE);
1992  if (ret >= 0)
1993  avpkt->data = avpkt->buf->data;
1994  }
1995 
1996  avctx->frame_number++;
1997  }
1998 
1999  if (ret < 0 || !*got_packet_ptr)
2000  av_packet_unref(avpkt);
2001 
2002  emms_c();
2003  return ret;
2004 }
2005 
2007  const AVSubtitle *sub)
2008 {
2009  int ret;
2010  if (sub->start_display_time) {
2011  av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
2012  return -1;
2013  }
2014 
2015  ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
2016  avctx->frame_number++;
2017  return ret;
2018 }
2019 
2020 /**
2021  * Attempt to guess proper monotonic timestamps for decoded video frames
2022  * which might have incorrect times. Input timestamps may wrap around, in
2023  * which case the output will as well.
2024  *
2025  * @param pts the pts field of the decoded AVPacket, as passed through
2026  * AVFrame.pkt_pts
2027  * @param dts the dts field of the decoded AVPacket
2028  * @return one of the input values, may be AV_NOPTS_VALUE
2029  */
2031  int64_t reordered_pts, int64_t dts)
2032 {
2033  int64_t pts = AV_NOPTS_VALUE;
2034 
2035  if (dts != AV_NOPTS_VALUE) {
2037  ctx->pts_correction_last_dts = dts;
2038  } else if (reordered_pts != AV_NOPTS_VALUE)
2039  ctx->pts_correction_last_dts = reordered_pts;
2040 
2041  if (reordered_pts != AV_NOPTS_VALUE) {
2042  ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
2043  ctx->pts_correction_last_pts = reordered_pts;
2044  } else if(dts != AV_NOPTS_VALUE)
2045  ctx->pts_correction_last_pts = dts;
2046 
2048  && reordered_pts != AV_NOPTS_VALUE)
2049  pts = reordered_pts;
2050  else
2051  pts = dts;
2052 
2053  return pts;
2054 }
2055 
2056 static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
2057 {
2058  int size = 0, ret;
2059  const uint8_t *data;
2060  uint32_t flags;
2061  int64_t val;
2062 
2063  data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
2064  if (!data)
2065  return 0;
2066 
2067  if (!(avctx->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE)) {
2068  av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
2069  "changes, but PARAM_CHANGE side data was sent to it.\n");
2070  ret = AVERROR(EINVAL);
2071  goto fail2;
2072  }
2073 
2074  if (size < 4)
2075  goto fail;
2076 
2077  flags = bytestream_get_le32(&data);
2078  size -= 4;
2079 
2081  if (size < 4)
2082  goto fail;
2083  val = bytestream_get_le32(&data);
2084  if (val <= 0 || val > INT_MAX) {
2085  av_log(avctx, AV_LOG_ERROR, "Invalid channel count");
2086  ret = AVERROR_INVALIDDATA;
2087  goto fail2;
2088  }
2089  avctx->channels = val;
2090  size -= 4;
2091  }
2093  if (size < 8)
2094  goto fail;
2095  avctx->channel_layout = bytestream_get_le64(&data);
2096  size -= 8;
2097  }
2099  if (size < 4)
2100  goto fail;
2101  val = bytestream_get_le32(&data);
2102  if (val <= 0 || val > INT_MAX) {
2103  av_log(avctx, AV_LOG_ERROR, "Invalid sample rate");
2104  ret = AVERROR_INVALIDDATA;
2105  goto fail2;
2106  }
2107  avctx->sample_rate = val;
2108  size -= 4;
2109  }
2111  if (size < 8)
2112  goto fail;
2113  avctx->width = bytestream_get_le32(&data);
2114  avctx->height = bytestream_get_le32(&data);
2115  size -= 8;
2116  ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
2117  if (ret < 0)
2118  goto fail2;
2119  }
2120 
2121  return 0;
2122 fail:
2123  av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
2124  ret = AVERROR_INVALIDDATA;
2125 fail2:
2126  if (ret < 0) {
2127  av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
2128  if (avctx->err_recognition & AV_EF_EXPLODE)
2129  return ret;
2130  }
2131  return 0;
2132 }
2133 
2135 {
2136  int ret;
2137 
2138  /* move the original frame to our backup */
2139  av_frame_unref(avci->to_free);
2140  av_frame_move_ref(avci->to_free, frame);
2141 
2142  /* now copy everything except the AVBufferRefs back
2143  * note that we make a COPY of the side data, so calling av_frame_free() on
2144  * the caller's frame will work properly */
2145  ret = av_frame_copy_props(frame, avci->to_free);
2146  if (ret < 0)
2147  return ret;
2148 
2149  memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
2150  memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
2151  if (avci->to_free->extended_data != avci->to_free->data) {
2152  int planes = av_frame_get_channels(avci->to_free);
2153  int size = planes * sizeof(*frame->extended_data);
2154 
2155  if (!size) {
2156  av_frame_unref(frame);
2157  return AVERROR_BUG;
2158  }
2159 
2160  frame->extended_data = av_malloc(size);
2161  if (!frame->extended_data) {
2162  av_frame_unref(frame);
2163  return AVERROR(ENOMEM);
2164  }
2165  memcpy(frame->extended_data, avci->to_free->extended_data,
2166  size);
2167  } else
2168  frame->extended_data = frame->data;
2169 
2170  frame->format = avci->to_free->format;
2171  frame->width = avci->to_free->width;
2172  frame->height = avci->to_free->height;
2173  frame->channel_layout = avci->to_free->channel_layout;
2174  frame->nb_samples = avci->to_free->nb_samples;
2176 
2177  return 0;
2178 }
2179 
2180 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
2181  int *got_picture_ptr,
2182  const AVPacket *avpkt)
2183 {
2184  AVCodecInternal *avci = avctx->internal;
2185  int ret;
2186  // copy to ensure we do not change avpkt
2187  AVPacket tmp = *avpkt;
2188 
2189  if (!avctx->codec)
2190  return AVERROR(EINVAL);
2191  if (avctx->codec->type != AVMEDIA_TYPE_VIDEO) {
2192  av_log(avctx, AV_LOG_ERROR, "Invalid media type for video\n");
2193  return AVERROR(EINVAL);
2194  }
2195 
2196  if (!avctx->codec->decode) {
2197  av_log(avctx, AV_LOG_ERROR, "This decoder requires using the avcodec_send_packet() API.\n");
2198  return AVERROR(ENOSYS);
2199  }
2200 
2201  *got_picture_ptr = 0;
2202  if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
2203  return AVERROR(EINVAL);
2204 
2205  avctx->internal->pkt = avpkt;
2206  ret = apply_param_change(avctx, avpkt);
2207  if (ret < 0)
2208  return ret;
2209 
2210  av_frame_unref(picture);
2211 
2212  if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size ||
2213  (avctx->active_thread_type & FF_THREAD_FRAME)) {
2214  int did_split = av_packet_split_side_data(&tmp);
2215  ret = apply_param_change(avctx, &tmp);
2216  if (ret < 0)
2217  goto fail;
2218 
2219  avctx->internal->pkt = &tmp;
2220  if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2221  ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
2222  &tmp);
2223  else {
2224  ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
2225  &tmp);
2227  picture->pkt_dts = avpkt->dts;
2228 
2229  if(!avctx->has_b_frames){
2230  av_frame_set_pkt_pos(picture, avpkt->pos);
2231  }
2232  //FIXME these should be under if(!avctx->has_b_frames)
2233  /* get_buffer is supposed to set frame parameters */
2234  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DR1)) {
2235  if (!picture->sample_aspect_ratio.num) picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
2236  if (!picture->width) picture->width = avctx->width;
2237  if (!picture->height) picture->height = avctx->height;
2238  if (picture->format == AV_PIX_FMT_NONE) picture->format = avctx->pix_fmt;
2239  }
2240  }
2241 
2242 fail:
2243  emms_c(); //needed to avoid an emms_c() call before every return;
2244 
2245  avctx->internal->pkt = NULL;
2246  if (did_split) {
2248  if(ret == tmp.size)
2249  ret = avpkt->size;
2250  }
2251 
2252  if (*got_picture_ptr) {
2253  if (!avctx->refcounted_frames) {
2254  int err = unrefcount_frame(avci, picture);
2255  if (err < 0)
2256  return err;
2257  }
2258 
2259  avctx->frame_number++;
2261  guess_correct_pts(avctx,
2262  picture->pkt_pts,
2263  picture->pkt_dts));
2264  } else
2265  av_frame_unref(picture);
2266  } else
2267  ret = 0;
2268 
2269  /* many decoders assign whole AVFrames, thus overwriting extended_data;
2270  * make sure it's set correctly */
2271  av_assert0(!picture->extended_data || picture->extended_data == picture->data);
2272 
2273 #if FF_API_AVCTX_TIMEBASE
2274  if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
2275  avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
2276 #endif
2277 
2278  return ret;
2279 }
2280 
2281 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
2282  AVFrame *frame,
2283  int *got_frame_ptr,
2284  const AVPacket *avpkt)
2285 {
2286  AVCodecInternal *avci = avctx->internal;
2287  int ret = 0;
2288 
2289  *got_frame_ptr = 0;
2290 
2291  if (!avctx->codec)
2292  return AVERROR(EINVAL);
2293 
2294  if (!avctx->codec->decode) {
2295  av_log(avctx, AV_LOG_ERROR, "This decoder requires using the avcodec_send_packet() API.\n");
2296  return AVERROR(ENOSYS);
2297  }
2298 
2299  if (!avpkt->data && avpkt->size) {
2300  av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2301  return AVERROR(EINVAL);
2302  }
2303  if (avctx->codec->type != AVMEDIA_TYPE_AUDIO) {
2304  av_log(avctx, AV_LOG_ERROR, "Invalid media type for audio\n");
2305  return AVERROR(EINVAL);
2306  }
2307 
2308  av_frame_unref(frame);
2309 
2310  if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
2311  uint8_t *side;
2312  int side_size;
2313  uint32_t discard_padding = 0;
2314  uint8_t skip_reason = 0;
2315  uint8_t discard_reason = 0;
2316  // copy to ensure we do not change avpkt
2317  AVPacket tmp = *avpkt;
2318  int did_split = av_packet_split_side_data(&tmp);
2319  ret = apply_param_change(avctx, &tmp);
2320  if (ret < 0)
2321  goto fail;
2322 
2323  avctx->internal->pkt = &tmp;
2324  if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2325  ret = ff_thread_decode_frame(avctx, frame, got_frame_ptr, &tmp);
2326  else {
2327  ret = avctx->codec->decode(avctx, frame, got_frame_ptr, &tmp);
2328  av_assert0(ret <= tmp.size);
2329  frame->pkt_dts = avpkt->dts;
2330  }
2331  if (ret >= 0 && *got_frame_ptr) {
2332  avctx->frame_number++;
2334  guess_correct_pts(avctx,
2335  frame->pkt_pts,
2336  frame->pkt_dts));
2337  if (frame->format == AV_SAMPLE_FMT_NONE)
2338  frame->format = avctx->sample_fmt;
2339  if (!frame->channel_layout)
2340  frame->channel_layout = avctx->channel_layout;
2341  if (!av_frame_get_channels(frame))
2342  av_frame_set_channels(frame, avctx->channels);
2343  if (!frame->sample_rate)
2344  frame->sample_rate = avctx->sample_rate;
2345  }
2346 
2347  side= av_packet_get_side_data(avctx->internal->pkt, AV_PKT_DATA_SKIP_SAMPLES, &side_size);
2348  if(side && side_size>=10) {
2349  avctx->internal->skip_samples = AV_RL32(side);
2350  discard_padding = AV_RL32(side + 4);
2351  av_log(avctx, AV_LOG_DEBUG, "skip %d / discard %d samples due to side data\n",
2352  avctx->internal->skip_samples, (int)discard_padding);
2353  skip_reason = AV_RL8(side + 8);
2354  discard_reason = AV_RL8(side + 9);
2355  }
2356  if (avctx->internal->skip_samples > 0 && *got_frame_ptr &&
2357  !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
2358  if(frame->nb_samples <= avctx->internal->skip_samples){
2359  *got_frame_ptr = 0;
2360  avctx->internal->skip_samples -= frame->nb_samples;
2361  av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
2362  avctx->internal->skip_samples);
2363  } else {
2365  frame->nb_samples - avctx->internal->skip_samples, avctx->channels, frame->format);
2366  if(avctx->pkt_timebase.num && avctx->sample_rate) {
2367  int64_t diff_ts = av_rescale_q(avctx->internal->skip_samples,
2368  (AVRational){1, avctx->sample_rate},
2369  avctx->pkt_timebase);
2370  if(frame->pkt_pts!=AV_NOPTS_VALUE)
2371  frame->pkt_pts += diff_ts;
2372  if(frame->pkt_dts!=AV_NOPTS_VALUE)
2373  frame->pkt_dts += diff_ts;
2374  if (av_frame_get_pkt_duration(frame) >= diff_ts)
2375  av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2376  } else {
2377  av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
2378  }
2379  av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
2380  avctx->internal->skip_samples, frame->nb_samples);
2381  frame->nb_samples -= avctx->internal->skip_samples;
2382  avctx->internal->skip_samples = 0;
2383  }
2384  }
2385 
2386  if (discard_padding > 0 && discard_padding <= frame->nb_samples && *got_frame_ptr &&
2387  !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
2388  if (discard_padding == frame->nb_samples) {
2389  *got_frame_ptr = 0;
2390  } else {
2391  if(avctx->pkt_timebase.num && avctx->sample_rate) {
2392  int64_t diff_ts = av_rescale_q(frame->nb_samples - discard_padding,
2393  (AVRational){1, avctx->sample_rate},
2394  avctx->pkt_timebase);
2395  av_frame_set_pkt_duration(frame, diff_ts);
2396  } else {
2397  av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for discarded samples.\n");
2398  }
2399  av_log(avctx, AV_LOG_DEBUG, "discard %d/%d samples\n",
2400  (int)discard_padding, frame->nb_samples);
2401  frame->nb_samples -= discard_padding;
2402  }
2403  }
2404 
2405  if ((avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL) && *got_frame_ptr) {
2407  if (fside) {
2408  AV_WL32(fside->data, avctx->internal->skip_samples);
2409  AV_WL32(fside->data + 4, discard_padding);
2410  AV_WL8(fside->data + 8, skip_reason);
2411  AV_WL8(fside->data + 9, discard_reason);
2412  avctx->internal->skip_samples = 0;
2413  }
2414  }
2415 fail:
2416  avctx->internal->pkt = NULL;
2417  if (did_split) {
2419  if(ret == tmp.size)
2420  ret = avpkt->size;
2421  }
2422 
2423  if (ret >= 0 && *got_frame_ptr) {
2424  if (!avctx->refcounted_frames) {
2425  int err = unrefcount_frame(avci, frame);
2426  if (err < 0)
2427  return err;
2428  }
2429  } else
2431  }
2432 
2433  av_assert0(ret <= avpkt->size);
2434 
2435  return ret;
2436 }
2437 
2438 #define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
2440  AVPacket *outpkt, const AVPacket *inpkt)
2441 {
2442 #if CONFIG_ICONV
2443  iconv_t cd = (iconv_t)-1;
2444  int ret = 0;
2445  char *inb, *outb;
2446  size_t inl, outl;
2447  AVPacket tmp;
2448 #endif
2449 
2450  if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER || inpkt->size == 0)
2451  return 0;
2452 
2453 #if CONFIG_ICONV
2454  cd = iconv_open("UTF-8", avctx->sub_charenc);
2455  av_assert0(cd != (iconv_t)-1);
2456 
2457  inb = inpkt->data;
2458  inl = inpkt->size;
2459 
2460  if (inl >= INT_MAX / UTF8_MAX_BYTES - AV_INPUT_BUFFER_PADDING_SIZE) {
2461  av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n");
2462  ret = AVERROR(ENOMEM);
2463  goto end;
2464  }
2465 
2466  ret = av_new_packet(&tmp, inl * UTF8_MAX_BYTES);
2467  if (ret < 0)
2468  goto end;
2469  outpkt->buf = tmp.buf;
2470  outpkt->data = tmp.data;
2471  outpkt->size = tmp.size;
2472  outb = outpkt->data;
2473  outl = outpkt->size;
2474 
2475  if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
2476  iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
2477  outl >= outpkt->size || inl != 0) {
2478  ret = FFMIN(AVERROR(errno), -1);
2479  av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
2480  "from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
2481  av_packet_unref(&tmp);
2482  goto end;
2483  }
2484  outpkt->size -= outl;
2485  memset(outpkt->data + outpkt->size, 0, outl);
2486 
2487 end:
2488  if (cd != (iconv_t)-1)
2489  iconv_close(cd);
2490  return ret;
2491 #else
2492  av_log(avctx, AV_LOG_ERROR, "requesting subtitles recoding without iconv");
2493  return AVERROR(EINVAL);
2494 #endif
2495 }
2496 
2497 static int utf8_check(const uint8_t *str)
2498 {
2499  const uint8_t *byte;
2500  uint32_t codepoint, min;
2501 
2502  while (*str) {
2503  byte = str;
2504  GET_UTF8(codepoint, *(byte++), return 0;);
2505  min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
2506  1 << (5 * (byte - str) - 4);
2507  if (codepoint < min || codepoint >= 0x110000 ||
2508  codepoint == 0xFFFE /* BOM */ ||
2509  codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
2510  return 0;
2511  str = byte;
2512  }
2513  return 1;
2514 }
2515 
2516 #if FF_API_ASS_TIMING
2517 static void insert_ts(AVBPrint *buf, int ts)
2518 {
2519  if (ts == -1) {
2520  av_bprintf(buf, "9:59:59.99,");
2521  } else {
2522  int h, m, s;
2523 
2524  h = ts/360000; ts -= 360000*h;
2525  m = ts/ 6000; ts -= 6000*m;
2526  s = ts/ 100; ts -= 100*s;
2527  av_bprintf(buf, "%d:%02d:%02d.%02d,", h, m, s, ts);
2528  }
2529 }
2530 
2532 {
2533  int i;
2534  AVBPrint buf;
2535 
2537 
2538  for (i = 0; i < sub->num_rects; i++) {
2539  char *final_dialog;
2540  const char *dialog;
2541  AVSubtitleRect *rect = sub->rects[i];
2542  int ts_start, ts_duration = -1;
2543  long int layer;
2544 
2545  if (rect->type != SUBTITLE_ASS || !strncmp(rect->ass, "Dialogue: ", 10))
2546  continue;
2547 
2548  av_bprint_clear(&buf);
2549 
2550  /* skip ReadOrder */
2551  dialog = strchr(rect->ass, ',');
2552  if (!dialog)
2553  continue;
2554  dialog++;
2555 
2556  /* extract Layer or Marked */
2557  layer = strtol(dialog, (char**)&dialog, 10);
2558  if (*dialog != ',')
2559  continue;
2560  dialog++;
2561 
2562  /* rescale timing to ASS time base (ms) */
2563  ts_start = av_rescale_q(pkt->pts, tb, av_make_q(1, 100));
2564  if (pkt->duration != -1)
2565  ts_duration = av_rescale_q(pkt->duration, tb, av_make_q(1, 100));
2566  sub->end_display_time = FFMAX(sub->end_display_time, 10 * ts_duration);
2567 
2568  /* construct ASS (standalone file form with timestamps) string */
2569  av_bprintf(&buf, "Dialogue: %ld,", layer);
2570  insert_ts(&buf, ts_start);
2571  insert_ts(&buf, ts_duration == -1 ? -1 : ts_start + ts_duration);
2572  av_bprintf(&buf, "%s\r\n", dialog);
2573 
2574  final_dialog = av_strdup(buf.str);
2575  if (!av_bprint_is_complete(&buf) || !final_dialog) {
2576  av_freep(&final_dialog);
2577  av_bprint_finalize(&buf, NULL);
2578  return AVERROR(ENOMEM);
2579  }
2580  av_freep(&rect->ass);
2581  rect->ass = final_dialog;
2582  }
2583 
2584  av_bprint_finalize(&buf, NULL);
2585  return 0;
2586 }
2587 #endif
2588 
2590  int *got_sub_ptr,
2591  AVPacket *avpkt)
2592 {
2593  int i, ret = 0;
2594 
2595  if (!avpkt->data && avpkt->size) {
2596  av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2597  return AVERROR(EINVAL);
2598  }
2599  if (!avctx->codec)
2600  return AVERROR(EINVAL);
2601  if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
2602  av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
2603  return AVERROR(EINVAL);
2604  }
2605 
2606  *got_sub_ptr = 0;
2607  get_subtitle_defaults(sub);
2608 
2609  if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size) {
2610  AVPacket pkt_recoded;
2611  AVPacket tmp = *avpkt;
2612  int did_split = av_packet_split_side_data(&tmp);
2613  //apply_param_change(avctx, &tmp);
2614 
2615  if (did_split) {
2616  /* FFMIN() prevents overflow in case the packet wasn't allocated with
2617  * proper padding.
2618  * If the side data is smaller than the buffer padding size, the
2619  * remaining bytes should have already been filled with zeros by the
2620  * original packet allocation anyway. */
2621  memset(tmp.data + tmp.size, 0,
2622  FFMIN(avpkt->size - tmp.size, AV_INPUT_BUFFER_PADDING_SIZE));
2623  }
2624 
2625  pkt_recoded = tmp;
2626  ret = recode_subtitle(avctx, &pkt_recoded, &tmp);
2627  if (ret < 0) {
2628  *got_sub_ptr = 0;
2629  } else {
2630  avctx->internal->pkt = &pkt_recoded;
2631 
2632  if (avctx->pkt_timebase.num && avpkt->pts != AV_NOPTS_VALUE)
2633  sub->pts = av_rescale_q(avpkt->pts,
2634  avctx->pkt_timebase, AV_TIME_BASE_Q);
2635  ret = avctx->codec->decode(avctx, sub, got_sub_ptr, &pkt_recoded);
2636  av_assert1((ret >= 0) >= !!*got_sub_ptr &&
2637  !!*got_sub_ptr >= !!sub->num_rects);
2638 
2639 #if FF_API_ASS_TIMING
2641  && *got_sub_ptr && sub->num_rects) {
2642  const AVRational tb = avctx->pkt_timebase.num ? avctx->pkt_timebase
2643  : avctx->time_base;
2644  int err = convert_sub_to_old_ass_form(sub, avpkt, tb);
2645  if (err < 0)
2646  ret = err;
2647  }
2648 #endif
2649 
2650  if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
2651  avctx->pkt_timebase.num) {
2652  AVRational ms = { 1, 1000 };
2653  sub->end_display_time = av_rescale_q(avpkt->duration,
2654  avctx->pkt_timebase, ms);
2655  }
2656 
2657  for (i = 0; i < sub->num_rects; i++) {
2658  if (sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
2659  av_log(avctx, AV_LOG_ERROR,
2660  "Invalid UTF-8 in decoded subtitles text; "
2661  "maybe missing -sub_charenc option\n");
2662  avsubtitle_free(sub);
2663  return AVERROR_INVALIDDATA;
2664  }
2665  }
2666 
2667  if (tmp.data != pkt_recoded.data) { // did we recode?
2668  /* prevent from destroying side data from original packet */
2669  pkt_recoded.side_data = NULL;
2670  pkt_recoded.side_data_elems = 0;
2671 
2672  av_packet_unref(&pkt_recoded);
2673  }
2675  sub->format = 0;
2676  else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB)
2677  sub->format = 1;
2678  avctx->internal->pkt = NULL;
2679  }
2680 
2681  if (did_split) {
2683  if(ret == tmp.size)
2684  ret = avpkt->size;
2685  }
2686 
2687  if (*got_sub_ptr)
2688  avctx->frame_number++;
2689  }
2690 
2691  return ret;
2692 }
2693 
2695 {
2696  int i;
2697 
2698  for (i = 0; i < sub->num_rects; i++) {
2699  av_freep(&sub->rects[i]->data[0]);
2700  av_freep(&sub->rects[i]->data[1]);
2701  av_freep(&sub->rects[i]->data[2]);
2702  av_freep(&sub->rects[i]->data[3]);
2703  av_freep(&sub->rects[i]->text);
2704  av_freep(&sub->rects[i]->ass);
2705  av_freep(&sub->rects[i]);
2706  }
2707 
2708  av_freep(&sub->rects);
2709 
2710  memset(sub, 0, sizeof(AVSubtitle));
2711 }
2712 
2713 static int do_decode(AVCodecContext *avctx, AVPacket *pkt)
2714 {
2715  int got_frame;
2716  int ret;
2717 
2718  av_assert0(!avctx->internal->buffer_frame->buf[0]);
2719 
2720  if (!pkt)
2721  pkt = avctx->internal->buffer_pkt;
2722 
2723  // This is the lesser evil. The field is for compatibility with legacy users
2724  // of the legacy API, and users using the new API should not be forced to
2725  // even know about this field.
2726  avctx->refcounted_frames = 1;
2727 
2728  // Some codecs (at least wma lossless) will crash when feeding drain packets
2729  // after EOF was signaled.
2730  if (avctx->internal->draining_done)
2731  return AVERROR_EOF;
2732 
2733  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
2734  ret = avcodec_decode_video2(avctx, avctx->internal->buffer_frame,
2735  &got_frame, pkt);
2736  if (ret >= 0)
2737  ret = pkt->size;
2738  } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2739  ret = avcodec_decode_audio4(avctx, avctx->internal->buffer_frame,
2740  &got_frame, pkt);
2741  } else {
2742  ret = AVERROR(EINVAL);
2743  }
2744 
2745  if (ret == AVERROR(EAGAIN))
2746  ret = pkt->size;
2747 
2748  if (ret < 0)
2749  return ret;
2750 
2751  if (avctx->internal->draining && !got_frame)
2752  avctx->internal->draining_done = 1;
2753 
2754  if (ret >= pkt->size) {
2756  } else {
2757  int consumed = ret;
2758 
2759  if (pkt != avctx->internal->buffer_pkt) {
2761  if ((ret = av_packet_ref(avctx->internal->buffer_pkt, pkt)) < 0)
2762  return ret;
2763  }
2764 
2765  avctx->internal->buffer_pkt->data += consumed;
2766  avctx->internal->buffer_pkt->size -= consumed;
2769  }
2770 
2771  if (got_frame)
2772  av_assert0(avctx->internal->buffer_frame->buf[0]);
2773 
2774  return 0;
2775 }
2776 
2777 int attribute_align_arg avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt)
2778 {
2779  int ret;
2780 
2781  if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
2782  return AVERROR(EINVAL);
2783 
2784  if (avctx->internal->draining)
2785  return AVERROR_EOF;
2786 
2787  if (!avpkt || !avpkt->size) {
2788  avctx->internal->draining = 1;
2789  avpkt = NULL;
2790 
2791  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
2792  return 0;
2793  }
2794 
2795  if (avctx->codec->send_packet) {
2796  if (avpkt) {
2797  AVPacket tmp = *avpkt;
2798  int did_split = av_packet_split_side_data(&tmp);
2799  ret = apply_param_change(avctx, &tmp);
2800  if (ret >= 0)
2801  ret = avctx->codec->send_packet(avctx, &tmp);
2802  if (did_split)
2804  return ret;
2805  } else {
2806  return avctx->codec->send_packet(avctx, NULL);
2807  }
2808  }
2809 
2810  // Emulation via old API. Assume avpkt is likely not refcounted, while
2811  // decoder output is always refcounted, and avoid copying.
2812 
2813  if (avctx->internal->buffer_pkt->size || avctx->internal->buffer_frame->buf[0])
2814  return AVERROR(EAGAIN);
2815 
2816  // The goal is decoding the first frame of the packet without using memcpy,
2817  // because the common case is having only 1 frame per packet (especially
2818  // with video, but audio too). In other cases, it can't be avoided, unless
2819  // the user is feeding refcounted packets.
2820  return do_decode(avctx, (AVPacket *)avpkt);
2821 }
2822 
2823 int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
2824 {
2825  int ret;
2826 
2827  av_frame_unref(frame);
2828 
2829  if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
2830  return AVERROR(EINVAL);
2831 
2832  if (avctx->codec->receive_frame) {
2833  if (avctx->internal->draining && !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
2834  return AVERROR_EOF;
2835  return avctx->codec->receive_frame(avctx, frame);
2836  }
2837 
2838  // Emulation via old API.
2839 
2840  if (!avctx->internal->buffer_frame->buf[0]) {
2841  if (!avctx->internal->buffer_pkt->size && !avctx->internal->draining)
2842  return AVERROR(EAGAIN);
2843 
2844  while (1) {
2845  if ((ret = do_decode(avctx, avctx->internal->buffer_pkt)) < 0) {
2847  return ret;
2848  }
2849  // Some audio decoders may consume partial data without returning
2850  // a frame (fate-wmapro-2ch). There is no way to make the caller
2851  // call avcodec_receive_frame() again without returning a frame,
2852  // so try to decode more in these cases.
2853  if (avctx->internal->buffer_frame->buf[0] ||
2854  !avctx->internal->buffer_pkt->size)
2855  break;
2856  }
2857  }
2858 
2859  if (!avctx->internal->buffer_frame->buf[0])
2860  return avctx->internal->draining ? AVERROR_EOF : AVERROR(EAGAIN);
2861 
2862  av_frame_move_ref(frame, avctx->internal->buffer_frame);
2863  return 0;
2864 }
2865 
2866 static int do_encode(AVCodecContext *avctx, const AVFrame *frame, int *got_packet)
2867 {
2868  int ret;
2869  *got_packet = 0;
2870 
2872  avctx->internal->buffer_pkt_valid = 0;
2873 
2874  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
2875  ret = avcodec_encode_video2(avctx, avctx->internal->buffer_pkt,
2876  frame, got_packet);
2877  } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2878  ret = avcodec_encode_audio2(avctx, avctx->internal->buffer_pkt,
2879  frame, got_packet);
2880  } else {
2881  ret = AVERROR(EINVAL);
2882  }
2883 
2884  if (ret >= 0 && *got_packet) {
2885  // Encoders must always return ref-counted buffers.
2886  // Side-data only packets have no data and can be not ref-counted.
2887  av_assert0(!avctx->internal->buffer_pkt->data || avctx->internal->buffer_pkt->buf);
2888  avctx->internal->buffer_pkt_valid = 1;
2889  ret = 0;
2890  } else {
2892  }
2893 
2894  return ret;
2895 }
2896 
2897 int attribute_align_arg avcodec_send_frame(AVCodecContext *avctx, const AVFrame *frame)
2898 {
2899  if (!avcodec_is_open(avctx) || !av_codec_is_encoder(avctx->codec))
2900  return AVERROR(EINVAL);
2901 
2902  if (avctx->internal->draining)
2903  return AVERROR_EOF;
2904 
2905  if (!frame) {
2906  avctx->internal->draining = 1;
2907 
2908  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
2909  return 0;
2910  }
2911 
2912  if (avctx->codec->send_frame)
2913  return avctx->codec->send_frame(avctx, frame);
2914 
2915  // Emulation via old API. Do it here instead of avcodec_receive_packet, because:
2916  // 1. if the AVFrame is not refcounted, the copying will be much more
2917  // expensive than copying the packet data
2918  // 2. assume few users use non-refcounted AVPackets, so usually no copy is
2919  // needed
2920 
2921  if (avctx->internal->buffer_pkt_valid)
2922  return AVERROR(EAGAIN);
2923 
2924  return do_encode(avctx, frame, &(int){0});
2925 }
2926 
2927 int attribute_align_arg avcodec_receive_packet(AVCodecContext *avctx, AVPacket *avpkt)
2928 {
2929  av_packet_unref(avpkt);
2930 
2931  if (!avcodec_is_open(avctx) || !av_codec_is_encoder(avctx->codec))
2932  return AVERROR(EINVAL);
2933 
2934  if (avctx->codec->receive_packet) {
2935  if (avctx->internal->draining && !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
2936  return AVERROR_EOF;
2937  return avctx->codec->receive_packet(avctx, avpkt);
2938  }
2939 
2940  // Emulation via old API.
2941 
2942  if (!avctx->internal->buffer_pkt_valid) {
2943  int got_packet;
2944  int ret;
2945  if (!avctx->internal->draining)
2946  return AVERROR(EAGAIN);
2947  ret = do_encode(avctx, NULL, &got_packet);
2948  if (ret < 0)
2949  return ret;
2950  if (ret >= 0 && !got_packet)
2951  return AVERROR_EOF;
2952  }
2953 
2954  av_packet_move_ref(avpkt, avctx->internal->buffer_pkt);
2955  avctx->internal->buffer_pkt_valid = 0;
2956  return 0;
2957 }
2958 
2960 {
2961  int i;
2962 
2963  if (!avctx)
2964  return 0;
2965 
2966  if (avcodec_is_open(avctx)) {
2967  FramePool *pool = avctx->internal->pool;
2968  if (CONFIG_FRAME_THREAD_ENCODER &&
2969  avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
2971  }
2972  if (HAVE_THREADS && avctx->internal->thread_ctx)
2973  ff_thread_free(avctx);
2974  if (avctx->codec && avctx->codec->close)
2975  avctx->codec->close(avctx);
2976  avctx->internal->byte_buffer_size = 0;
2977  av_freep(&avctx->internal->byte_buffer);
2978  av_frame_free(&avctx->internal->to_free);
2981  for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
2982  av_buffer_pool_uninit(&pool->pools[i]);
2983  av_freep(&avctx->internal->pool);
2984 
2985  if (avctx->hwaccel && avctx->hwaccel->uninit)
2986  avctx->hwaccel->uninit(avctx);
2988 
2989  av_freep(&avctx->internal);
2990  }
2991 
2992  for (i = 0; i < avctx->nb_coded_side_data; i++)
2993  av_freep(&avctx->coded_side_data[i].data);
2994  av_freep(&avctx->coded_side_data);
2995  avctx->nb_coded_side_data = 0;
2996 
2997  av_buffer_unref(&avctx->hw_frames_ctx);
2998 
2999  if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
3000  av_opt_free(avctx->priv_data);
3001  av_opt_free(avctx);
3002  av_freep(&avctx->priv_data);
3003  if (av_codec_is_encoder(avctx->codec)) {
3004  av_freep(&avctx->extradata);
3005 #if FF_API_CODED_FRAME
3007  av_frame_free(&avctx->coded_frame);
3009 #endif
3010  }
3011  avctx->codec = NULL;
3012  avctx->active_thread_type = 0;
3013 
3014  return 0;
3015 }
3016 
3018 {
3019  switch(id){
3020  //This is for future deprecatec codec ids, its empty since
3021  //last major bump but will fill up again over time, please don't remove it
3022  default : return id;
3023  }
3024 }
3025 
3026 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
3027 {
3028  AVCodec *p, *experimental = NULL;
3029  p = first_avcodec;
3030  id= remap_deprecated_codec_id(id);
3031  while (p) {
3032  if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
3033  p->id == id) {
3034  if (p->capabilities & AV_CODEC_CAP_EXPERIMENTAL && !experimental) {
3035  experimental = p;
3036  } else
3037  return p;
3038  }
3039  p = p->next;
3040  }
3041  return experimental;
3042 }
3043 
3045 {
3046  return find_encdec(id, 1);
3047 }
3048 
3050 {
3051  AVCodec *p;
3052  if (!name)
3053  return NULL;
3054  p = first_avcodec;
3055  while (p) {
3056  if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
3057  return p;
3058  p = p->next;
3059  }
3060  return NULL;
3061 }
3062 
3064 {
3065  return find_encdec(id, 0);
3066 }
3067 
3069 {
3070  AVCodec *p;
3071  if (!name)
3072  return NULL;
3073  p = first_avcodec;
3074  while (p) {
3075  if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
3076  return p;
3077  p = p->next;
3078  }
3079  return NULL;
3080 }
3081 
3082 const char *avcodec_get_name(enum AVCodecID id)
3083 {
3084  const AVCodecDescriptor *cd;
3085  AVCodec *codec;
3086 
3087  if (id == AV_CODEC_ID_NONE)
3088  return "none";
3089  cd = avcodec_descriptor_get(id);
3090  if (cd)
3091  return cd->name;
3092  av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
3093  codec = avcodec_find_decoder(id);
3094  if (codec)
3095  return codec->name;
3096  codec = avcodec_find_encoder(id);
3097  if (codec)
3098  return codec->name;
3099  return "unknown_codec";
3100 }
3101 
3102 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
3103 {
3104  int i, len, ret = 0;
3105 
3106 #define TAG_PRINT(x) \
3107  (((x) >= '0' && (x) <= '9') || \
3108  ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
3109  ((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_'))
3110 
3111  for (i = 0; i < 4; i++) {
3112  len = snprintf(buf, buf_size,
3113  TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
3114  buf += len;
3115  buf_size = buf_size > len ? buf_size - len : 0;
3116  ret += len;
3117  codec_tag >>= 8;
3118  }
3119  return ret;
3120 }
3121 
3122 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
3123 {
3124  const char *codec_type;
3125  const char *codec_name;
3126  const char *profile = NULL;
3127  int64_t bitrate;
3128  int new_line = 0;
3129  AVRational display_aspect_ratio;
3130  const char *separator = enc->dump_separator ? (const char *)enc->dump_separator : ", ";
3131 
3132  if (!buf || buf_size <= 0)
3133  return;
3134  codec_type = av_get_media_type_string(enc->codec_type);
3135  codec_name = avcodec_get_name(enc->codec_id);
3136  profile = avcodec_profile_name(enc->codec_id, enc->profile);
3137 
3138  snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown",
3139  codec_name);
3140  buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
3141 
3142  if (enc->codec && strcmp(enc->codec->name, codec_name))
3143  snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name);
3144 
3145  if (profile)
3146  snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
3147  if ( enc->codec_type == AVMEDIA_TYPE_VIDEO
3149  && enc->refs)
3150  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3151  ", %d reference frame%s",
3152  enc->refs, enc->refs > 1 ? "s" : "");
3153 
3154  if (enc->codec_tag) {
3155  char tag_buf[32];
3156  av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
3157  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3158  " (%s / 0x%04X)", tag_buf, enc->codec_tag);
3159  }
3160 
3161  switch (enc->codec_type) {
3162  case AVMEDIA_TYPE_VIDEO:
3163  {
3164  char detail[256] = "(";
3165 
3166  av_strlcat(buf, separator, buf_size);
3167 
3168  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3169  "%s", enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
3171  if (enc->bits_per_raw_sample && enc->pix_fmt != AV_PIX_FMT_NONE &&
3173  av_strlcatf(detail, sizeof(detail), "%d bpc, ", enc->bits_per_raw_sample);
3175  av_strlcatf(detail, sizeof(detail), "%s, ",
3177 
3178  if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
3180  enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
3181  if (enc->colorspace != (int)enc->color_primaries ||
3182  enc->colorspace != (int)enc->color_trc) {
3183  new_line = 1;
3184  av_strlcatf(detail, sizeof(detail), "%s/%s/%s, ",
3188  } else
3189  av_strlcatf(detail, sizeof(detail), "%s, ",
3191  }
3192 
3193  if (av_log_get_level() >= AV_LOG_DEBUG &&
3195  av_strlcatf(detail, sizeof(detail), "%s, ",
3197 
3198  if (strlen(detail) > 1) {
3199  detail[strlen(detail) - 2] = 0;
3200  av_strlcatf(buf, buf_size, "%s)", detail);
3201  }
3202  }
3203 
3204  if (enc->width) {
3205  av_strlcat(buf, new_line ? separator : ", ", buf_size);
3206 
3207  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3208  "%dx%d",
3209  enc->width, enc->height);
3210 
3211  if (av_log_get_level() >= AV_LOG_VERBOSE &&
3212  (enc->width != enc->coded_width ||
3213  enc->height != enc->coded_height))
3214  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3215  " (%dx%d)", enc->coded_width, enc->coded_height);
3216 
3217  if (enc->sample_aspect_ratio.num) {
3218  av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3219  enc->width * (int64_t)enc->sample_aspect_ratio.num,
3220  enc->height * (int64_t)enc->sample_aspect_ratio.den,
3221  1024 * 1024);
3222  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3223  " [SAR %d:%d DAR %d:%d]",
3225  display_aspect_ratio.num, display_aspect_ratio.den);
3226  }
3227  if (av_log_get_level() >= AV_LOG_DEBUG) {
3228  int g = av_gcd(enc->time_base.num, enc->time_base.den);
3229  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3230  ", %d/%d",
3231  enc->time_base.num / g, enc->time_base.den / g);
3232  }
3233  }
3234  if (encode) {
3235  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3236  ", q=%d-%d", enc->qmin, enc->qmax);
3237  } else {
3239  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3240  ", Closed Captions");
3242  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3243  ", lossless");
3244  }
3245  break;
3246  case AVMEDIA_TYPE_AUDIO:
3247  av_strlcat(buf, separator, buf_size);
3248 
3249  if (enc->sample_rate) {
3250  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3251  "%d Hz, ", enc->sample_rate);
3252  }
3253  av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
3254  if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
3255  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3256  ", %s", av_get_sample_fmt_name(enc->sample_fmt));
3257  }
3258  if ( enc->bits_per_raw_sample > 0
3260  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3261  " (%d bit)", enc->bits_per_raw_sample);
3262  break;
3263  case AVMEDIA_TYPE_DATA:
3264  if (av_log_get_level() >= AV_LOG_DEBUG) {
3265  int g = av_gcd(enc->time_base.num, enc->time_base.den);
3266  if (g)
3267  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3268  ", %d/%d",
3269  enc->time_base.num / g, enc->time_base.den / g);
3270  }
3271  break;
3272  case AVMEDIA_TYPE_SUBTITLE:
3273  if (enc->width)
3274  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3275  ", %dx%d", enc->width, enc->height);
3276  break;
3277  default:
3278  return;
3279  }
3280  if (encode) {
3281  if (enc->flags & AV_CODEC_FLAG_PASS1)
3282  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3283  ", pass 1");
3284  if (enc->flags & AV_CODEC_FLAG_PASS2)
3285  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3286  ", pass 2");
3287  }
3288  bitrate = get_bit_rate(enc);
3289  if (bitrate != 0) {
3290  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3291  ", %"PRId64" kb/s", bitrate / 1000);
3292  } else if (enc->rc_max_rate > 0) {
3293  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3294  ", max. %"PRId64" kb/s", (int64_t)enc->rc_max_rate / 1000);
3295  }
3296 }
3297 
3298 const char *av_get_profile_name(const AVCodec *codec, int profile)
3299 {
3300  const AVProfile *p;
3301  if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
3302  return NULL;
3303 
3304  for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
3305  if (p->profile == profile)
3306  return p->name;
3307 
3308  return NULL;
3309 }
3310 
3312 {
3313  const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
3314  const AVProfile *p;
3315 
3316  if (profile == FF_PROFILE_UNKNOWN || !desc || !desc->profiles)
3317  return NULL;
3318 
3319  for (p = desc->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
3320  if (p->profile == profile)
3321  return p->name;
3322 
3323  return NULL;
3324 }
3325 
3326 unsigned avcodec_version(void)
3327 {
3328 // av_assert0(AV_CODEC_ID_V410==164);
3331 // av_assert0(AV_CODEC_ID_BMV_AUDIO==86071);
3332  av_assert0(AV_CODEC_ID_SRT==94216);
3334 
3335  return LIBAVCODEC_VERSION_INT;
3336 }
3337 
3338 const char *avcodec_configuration(void)
3339 {
3340  return FFMPEG_CONFIGURATION;
3341 }
3342 
3343 const char *avcodec_license(void)
3344 {
3345 #define LICENSE_PREFIX "libavcodec license: "
3346  return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
3347 }
3348 
3350 {
3351  avctx->internal->draining = 0;
3352  avctx->internal->draining_done = 0;
3355  avctx->internal->buffer_pkt_valid = 0;
3356 
3357  if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
3358  ff_thread_flush(avctx);
3359  else if (avctx->codec->flush)
3360  avctx->codec->flush(avctx);
3361 
3362  avctx->pts_correction_last_pts =
3363  avctx->pts_correction_last_dts = INT64_MIN;
3364 
3365  if (!avctx->refcounted_frames)
3366  av_frame_unref(avctx->internal->to_free);
3367 }
3368 
3370 {
3371  switch (codec_id) {
3372  case AV_CODEC_ID_8SVX_EXP:
3373  case AV_CODEC_ID_8SVX_FIB:
3374  case AV_CODEC_ID_ADPCM_CT:
3382  return 4;
3383  case AV_CODEC_ID_DSD_LSBF:
3384  case AV_CODEC_ID_DSD_MSBF:
3387  case AV_CODEC_ID_PCM_ALAW:
3388  case AV_CODEC_ID_PCM_MULAW:
3389  case AV_CODEC_ID_PCM_S8:
3391  case AV_CODEC_ID_PCM_U8:
3392  case AV_CODEC_ID_PCM_ZORK:
3393  case AV_CODEC_ID_SDX2_DPCM:
3394  return 8;
3395  case AV_CODEC_ID_PCM_S16BE:
3397  case AV_CODEC_ID_PCM_S16LE:
3399  case AV_CODEC_ID_PCM_U16BE:
3400  case AV_CODEC_ID_PCM_U16LE:
3401  return 16;
3403  case AV_CODEC_ID_PCM_S24BE:
3404  case AV_CODEC_ID_PCM_S24LE:
3406  case AV_CODEC_ID_PCM_U24BE:
3407  case AV_CODEC_ID_PCM_U24LE:
3408  return 24;
3409  case AV_CODEC_ID_PCM_S32BE:
3410  case AV_CODEC_ID_PCM_S32LE:
3412  case AV_CODEC_ID_PCM_U32BE:
3413  case AV_CODEC_ID_PCM_U32LE:
3414  case AV_CODEC_ID_PCM_F32BE:
3415  case AV_CODEC_ID_PCM_F32LE:
3416  return 32;
3417  case AV_CODEC_ID_PCM_F64BE:
3418  case AV_CODEC_ID_PCM_F64LE:
3419  return 64;
3420  default:
3421  return 0;
3422  }
3423 }
3424 
3426 {
3427  static const enum AVCodecID map[AV_SAMPLE_FMT_NB][2] = {
3438  };
3439  if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB)
3440  return AV_CODEC_ID_NONE;
3441  if (be < 0 || be > 1)
3442  be = AV_NE(1, 0);
3443  return map[fmt][be];
3444 }
3445 
3447 {
3448  switch (codec_id) {
3450  return 2;
3452  return 3;
3456  case AV_CODEC_ID_ADPCM_SWF:
3457  case AV_CODEC_ID_ADPCM_MS:
3458  return 4;
3459  default:
3460  return av_get_exact_bits_per_sample(codec_id);
3461  }
3462 }
3463 
3464 static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba,
3465  uint32_t tag, int bits_per_coded_sample, int64_t bitrate,
3466  uint8_t * extradata, int frame_size, int frame_bytes)
3467 {
3469  int framecount = (ba > 0 && frame_bytes / ba > 0) ? frame_bytes / ba : 1;
3470 
3471  /* codecs with an exact constant bits per sample */
3472  if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
3473  return (frame_bytes * 8LL) / (bps * ch);
3474  bps = bits_per_coded_sample;
3475 
3476  /* codecs with a fixed packet duration */
3477  switch (id) {
3478  case AV_CODEC_ID_ADPCM_ADX: return 32;
3479  case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
3480  case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
3481  case AV_CODEC_ID_AMR_NB:
3482  case AV_CODEC_ID_EVRC:
3483  case AV_CODEC_ID_GSM:
3484  case AV_CODEC_ID_QCELP:
3485  case AV_CODEC_ID_RA_288: return 160;
3486  case AV_CODEC_ID_AMR_WB:
3487  case AV_CODEC_ID_GSM_MS: return 320;
3488  case AV_CODEC_ID_MP1: return 384;
3489  case AV_CODEC_ID_ATRAC1: return 512;
3490  case AV_CODEC_ID_ATRAC3: return 1024 * framecount;
3491  case AV_CODEC_ID_ATRAC3P: return 2048;
3492  case AV_CODEC_ID_MP2:
3493  case AV_CODEC_ID_MUSEPACK7: return 1152;
3494  case AV_CODEC_ID_AC3: return 1536;
3495  }
3496 
3497  if (sr > 0) {
3498  /* calc from sample rate */
3499  if (id == AV_CODEC_ID_TTA)
3500  return 256 * sr / 245;
3501  else if (id == AV_CODEC_ID_DST)
3502  return 588 * sr / 44100;
3503 
3504  if (ch > 0) {
3505  /* calc from sample rate and channels */
3506  if (id == AV_CODEC_ID_BINKAUDIO_DCT)
3507  return (480 << (sr / 22050)) / ch;
3508  }
3509  }
3510 
3511  if (ba > 0) {
3512  /* calc from block_align */
3513  if (id == AV_CODEC_ID_SIPR) {
3514  switch (ba) {
3515  case 20: return 160;
3516  case 19: return 144;
3517  case 29: return 288;
3518  case 37: return 480;
3519  }
3520  } else if (id == AV_CODEC_ID_ILBC) {
3521  switch (ba) {
3522  case 38: return 160;
3523  case 50: return 240;
3524  }
3525  }
3526  }
3527 
3528  if (frame_bytes > 0) {
3529  /* calc from frame_bytes only */
3530  if (id == AV_CODEC_ID_TRUESPEECH)
3531  return 240 * (frame_bytes / 32);
3532  if (id == AV_CODEC_ID_NELLYMOSER)
3533  return 256 * (frame_bytes / 64);
3534  if (id == AV_CODEC_ID_RA_144)
3535  return 160 * (frame_bytes / 20);
3536  if (id == AV_CODEC_ID_G723_1)
3537  return 240 * (frame_bytes / 24);
3538 
3539  if (bps > 0) {
3540  /* calc from frame_bytes and bits_per_coded_sample */
3541  if (id == AV_CODEC_ID_ADPCM_G726)
3542  return frame_bytes * 8 / bps;
3543  }
3544 
3545  if (ch > 0 && ch < INT_MAX/16) {
3546  /* calc from frame_bytes and channels */
3547  switch (id) {
3548  case AV_CODEC_ID_ADPCM_AFC:
3549  return frame_bytes / (9 * ch) * 16;
3550  case AV_CODEC_ID_ADPCM_PSX:
3551  case AV_CODEC_ID_ADPCM_DTK:
3552  return frame_bytes / (16 * ch) * 28;
3553  case AV_CODEC_ID_ADPCM_4XM:
3556  return (frame_bytes - 4 * ch) * 2 / ch;
3558  return (frame_bytes - 4) * 2 / ch;
3560  return (frame_bytes - 8) * 2 / ch;
3561  case AV_CODEC_ID_ADPCM_THP:
3563  if (extradata)
3564  return frame_bytes * 14 / (8 * ch);
3565  break;
3566  case AV_CODEC_ID_ADPCM_XA:
3567  return (frame_bytes / 128) * 224 / ch;
3569  return (frame_bytes - 6 - ch) / ch;
3570  case AV_CODEC_ID_ROQ_DPCM:
3571  return (frame_bytes - 8) / ch;
3572  case AV_CODEC_ID_XAN_DPCM:
3573  return (frame_bytes - 2 * ch) / ch;
3574  case AV_CODEC_ID_MACE3:
3575  return 3 * frame_bytes / ch;
3576  case AV_CODEC_ID_MACE6:
3577  return 6 * frame_bytes / ch;
3578  case AV_CODEC_ID_PCM_LXF:
3579  return 2 * (frame_bytes / (5 * ch));
3580  case AV_CODEC_ID_IAC:
3581  case AV_CODEC_ID_IMC:
3582  return 4 * frame_bytes / ch;
3583  }
3584 
3585  if (tag) {
3586  /* calc from frame_bytes, channels, and codec_tag */
3587  if (id == AV_CODEC_ID_SOL_DPCM) {
3588  if (tag == 3)
3589  return frame_bytes / ch;
3590  else
3591  return frame_bytes * 2 / ch;
3592  }
3593  }
3594 
3595  if (ba > 0) {
3596  /* calc from frame_bytes, channels, and block_align */
3597  int blocks = frame_bytes / ba;
3598  switch (id) {
3600  if (bps < 2 || bps > 5)
3601  return 0;
3602  return blocks * (1 + (ba - 4 * ch) / (bps * ch) * 8);
3604  return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
3606  return blocks * (1 + (ba - 4 * ch) * 2 / ch);
3608  return blocks * ((ba - 4 * ch) * 2 / ch);
3609  case AV_CODEC_ID_ADPCM_MS:
3610  return blocks * (2 + (ba - 7 * ch) * 2 / ch);
3612  return blocks * (ba - 16) * 2 / ch;
3613  }
3614  }
3615 
3616  if (bps > 0) {
3617  /* calc from frame_bytes, channels, and bits_per_coded_sample */
3618  switch (id) {
3619  case AV_CODEC_ID_PCM_DVD:
3620  if(bps<4)
3621  return 0;
3622  return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
3624  if(bps<4)
3625  return 0;
3626  return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
3627  case AV_CODEC_ID_S302M:
3628  return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
3629  }
3630  }
3631  }
3632  }
3633 
3634  /* Fall back on using frame_size */
3635  if (frame_size > 1 && frame_bytes)
3636  return frame_size;
3637 
3638  //For WMA we currently have no other means to calculate duration thus we
3639  //do it here by assuming CBR, which is true for all known cases.
3640  if (bitrate > 0 && frame_bytes > 0 && sr > 0 && ba > 1) {
3641  if (id == AV_CODEC_ID_WMAV1 || id == AV_CODEC_ID_WMAV2)
3642  return (frame_bytes * 8LL * sr) / bitrate;
3643  }
3644 
3645  return 0;
3646 }
3647 
3648 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
3649 {
3650  return get_audio_frame_duration(avctx->codec_id, avctx->sample_rate,
3651  avctx->channels, avctx->block_align,
3652  avctx->codec_tag, avctx->bits_per_coded_sample,
3653  avctx->bit_rate, avctx->extradata, avctx->frame_size,
3654  frame_bytes);
3655 }
3656 
3658 {
3659  return get_audio_frame_duration(par->codec_id, par->sample_rate,
3660  par->channels, par->block_align,
3661  par->codec_tag, par->bits_per_coded_sample,
3662  par->bit_rate, par->extradata, par->frame_size,
3663  frame_bytes);
3664 }
3665 
3666 #if !HAVE_THREADS
3668 {
3669  return -1;
3670 }
3671 
3672 #endif
3673 
3674 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
3675 {
3676  unsigned int n = 0;
3677 
3678  while (v >= 0xff) {
3679  *s++ = 0xff;
3680  v -= 0xff;
3681  n++;
3682  }
3683  *s = v;
3684  n++;
3685  return n;
3686 }
3687 
3688 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
3689 {
3690  int i;
3691  for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
3692  return i;
3693 }
3694 
3695 #if FF_API_MISSING_SAMPLE
3697 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
3698 {
3699  av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your FFmpeg "
3700  "version to the newest one from Git. If the problem still "
3701  "occurs, it means that your file has a feature which has not "
3702  "been implemented.\n", feature);
3703  if(want_sample)
3705 }
3706 
3707 void av_log_ask_for_sample(void *avc, const char *msg, ...)
3708 {
3709  va_list argument_list;
3710 
3711  va_start(argument_list, msg);
3712 
3713  if (msg)
3714  av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
3715  av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
3716  "of this file to ftp://upload.ffmpeg.org/incoming/ "
3717  "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)\n");
3718 
3719  va_end(argument_list);
3720 }
3722 #endif /* FF_API_MISSING_SAMPLE */
3723 
3726 
3728 {
3729  AVHWAccel **p = last_hwaccel;
3730  hwaccel->next = NULL;
3731  while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, hwaccel))
3732  p = &(*p)->next;
3733  last_hwaccel = &hwaccel->next;
3734 }
3735 
3737 {
3738  return hwaccel ? hwaccel->next : first_hwaccel;
3739 }
3740 
3741 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
3742 {
3743  if (lockmgr_cb) {
3744  // There is no good way to rollback a failure to destroy the
3745  // mutex, so we ignore failures.
3748  lockmgr_cb = NULL;
3749  codec_mutex = NULL;
3750  avformat_mutex = NULL;
3751  }
3752 
3753  if (cb) {
3754  void *new_codec_mutex = NULL;
3755  void *new_avformat_mutex = NULL;
3756  int err;
3757  if (err = cb(&new_codec_mutex, AV_LOCK_CREATE)) {
3758  return err > 0 ? AVERROR_UNKNOWN : err;
3759  }
3760  if (err = cb(&new_avformat_mutex, AV_LOCK_CREATE)) {
3761  // Ignore failures to destroy the newly created mutex.
3762  cb(&new_codec_mutex, AV_LOCK_DESTROY);
3763  return err > 0 ? AVERROR_UNKNOWN : err;
3764  }
3765  lockmgr_cb = cb;
3766  codec_mutex = new_codec_mutex;
3767  avformat_mutex = new_avformat_mutex;
3768  }
3769 
3770  return 0;
3771 }
3772 
3773 int ff_lock_avcodec(AVCodecContext *log_ctx, const AVCodec *codec)
3774 {
3775  if (codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE || !codec->init)
3776  return 0;
3777 
3778  if (lockmgr_cb) {
3780  return -1;
3781  }
3782 
3784  av_log(log_ctx, AV_LOG_ERROR,
3785  "Insufficient thread locking. At least %d threads are "
3786  "calling avcodec_open2() at the same time right now.\n",
3788  if (!lockmgr_cb)
3789  av_log(log_ctx, AV_LOG_ERROR, "No lock manager is set, please see av_lockmgr_register()\n");
3790  ff_avcodec_locked = 1;
3791  ff_unlock_avcodec(codec);
3792  return AVERROR(EINVAL);
3793  }
3795  ff_avcodec_locked = 1;
3796  return 0;
3797 }
3798 
3799 int ff_unlock_avcodec(const AVCodec *codec)
3800 {
3801  if (codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE || !codec->init)
3802  return 0;
3803 
3805  ff_avcodec_locked = 0;
3807  if (lockmgr_cb) {
3809  return -1;
3810  }
3811 
3812  return 0;
3813 }
3814 
3816 {
3817  if (lockmgr_cb) {
3819  return -1;
3820  }
3821  return 0;
3822 }
3823 
3825 {
3826  if (lockmgr_cb) {
3828  return -1;
3829  }
3830  return 0;
3831 }
3832 
3833 unsigned int avpriv_toupper4(unsigned int x)
3834 {
3835  return av_toupper(x & 0xFF) +
3836  (av_toupper((x >> 8) & 0xFF) << 8) +
3837  (av_toupper((x >> 16) & 0xFF) << 16) +
3838 ((unsigned)av_toupper((x >> 24) & 0xFF) << 24);
3839 }
3840 
3842 {
3843  int ret;
3844 
3845  dst->owner = src->owner;
3846 
3847  ret = av_frame_ref(dst->f, src->f);
3848  if (ret < 0)
3849  return ret;
3850 
3851  av_assert0(!dst->progress);
3852 
3853  if (src->progress &&
3854  !(dst->progress = av_buffer_ref(src->progress))) {
3855  ff_thread_release_buffer(dst->owner, dst);
3856  return AVERROR(ENOMEM);
3857  }
3858 
3859  return 0;
3860 }
3861 
3862 #if !HAVE_THREADS
3863 
3865 {
3866  return ff_get_format(avctx, fmt);
3867 }
3868 
3870 {
3871  f->owner = avctx;
3872  return ff_get_buffer(avctx, f->f, flags);
3873 }
3874 
3876 {
3877  if (f->f)
3878  av_frame_unref(f->f);
3879 }
3880 
3882 {
3883 }
3884 
3885 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
3886 {
3887 }
3888 
3889 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
3890 {
3891 }
3892 
3894 {
3895  return 1;
3896 }
3897 
3899 {
3900  return 0;
3901 }
3902 
3904 {
3905 }
3906 
3907 void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
3908 {
3909 }
3910 
3911 void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n)
3912 {
3913 }
3914 
3915 #endif
3916 
3918 {
3919  return !!s->internal;
3920 }
3921 
3922 int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf)
3923 {
3924  int ret;
3925  char *str;
3926 
3927  ret = av_bprint_finalize(buf, &str);
3928  if (ret < 0)
3929  return ret;
3930  if (!av_bprint_is_complete(buf)) {
3931  av_free(str);
3932  return AVERROR(ENOMEM);
3933  }
3934 
3935  avctx->extradata = str;
3936  /* Note: the string is NUL terminated (so extradata can be read as a
3937  * string), but the ending character is not accounted in the size (in
3938  * binary formats you are likely not supposed to mux that character). When
3939  * extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
3940  * zeros. */
3941  avctx->extradata_size = buf->len;
3942  return 0;
3943 }
3944 
3945 const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
3946  const uint8_t *end,
3947  uint32_t *av_restrict state)
3948 {
3949  int i;
3950 
3951  av_assert0(p <= end);
3952  if (p >= end)
3953  return end;
3954 
3955  for (i = 0; i < 3; i++) {
3956  uint32_t tmp = *state << 8;
3957  *state = tmp + *(p++);
3958  if (tmp == 0x100 || p == end)
3959  return p;
3960  }
3961 
3962  while (p < end) {
3963  if (p[-1] > 1 ) p += 3;
3964  else if (p[-2] ) p += 2;
3965  else if (p[-3]|(p[-1]-1)) p++;
3966  else {
3967  p++;
3968  break;
3969  }
3970  }
3971 
3972  p = FFMIN(p, end) - 4;
3973  *state = AV_RB32(p);
3974 
3975  return p + 4;
3976 }
3977 
3979 {
3980  AVCPBProperties *props = av_mallocz(sizeof(AVCPBProperties));
3981  if (!props)
3982  return NULL;
3983 
3984  if (size)
3985  *size = sizeof(*props);
3986 
3987  props->vbv_delay = UINT64_MAX;
3988 
3989  return props;
3990 }
3991 
3993 {
3995  AVCPBProperties *props;
3996  size_t size;
3997 
3998  props = av_cpb_properties_alloc(&size);
3999  if (!props)
4000  return NULL;
4001 
4002  tmp = av_realloc_array(avctx->coded_side_data, avctx->nb_coded_side_data + 1, sizeof(*tmp));
4003  if (!tmp) {
4004  av_freep(&props);
4005  return NULL;
4006  }
4007 
4008  avctx->coded_side_data = tmp;
4009  avctx->nb_coded_side_data++;
4010 
4012  avctx->coded_side_data[avctx->nb_coded_side_data - 1].data = (uint8_t*)props;
4013  avctx->coded_side_data[avctx->nb_coded_side_data - 1].size = size;
4014 
4015  return props;
4016 }
4017 
4019 {
4020  av_freep(&par->extradata);
4021 
4022  memset(par, 0, sizeof(*par));
4023 
4025  par->codec_id = AV_CODEC_ID_NONE;
4026  par->format = -1;
4033  par->sample_aspect_ratio = (AVRational){ 0, 1 };
4034  par->profile = FF_PROFILE_UNKNOWN;
4035  par->level = FF_LEVEL_UNKNOWN;
4036 }
4037 
4039 {
4040  AVCodecParameters *par = av_mallocz(sizeof(*par));
4041 
4042  if (!par)
4043  return NULL;
4045  return par;
4046 }
4047 
4049 {
4050  AVCodecParameters *par = *ppar;
4051 
4052  if (!par)
4053  return;
4055 
4056  av_freep(ppar);
4057 }
4058 
4060 {
4062  memcpy(dst, src, sizeof(*dst));
4063 
4064  dst->extradata = NULL;
4065  dst->extradata_size = 0;
4066  if (src->extradata) {
4068  if (!dst->extradata)
4069  return AVERROR(ENOMEM);
4070  memcpy(dst->extradata, src->extradata, src->extradata_size);
4071  dst->extradata_size = src->extradata_size;
4072  }
4073 
4074  return 0;
4075 }
4076 
4078  const AVCodecContext *codec)
4079 {
4081 
4082  par->codec_type = codec->codec_type;
4083  par->codec_id = codec->codec_id;
4084  par->codec_tag = codec->codec_tag;
4085 
4086  par->bit_rate = codec->bit_rate;
4089  par->profile = codec->profile;
4090  par->level = codec->level;
4091 
4092  switch (par->codec_type) {
4093  case AVMEDIA_TYPE_VIDEO:
4094  par->format = codec->pix_fmt;
4095  par->width = codec->width;
4096  par->height = codec->height;
4097  par->field_order = codec->field_order;
4098  par->color_range = codec->color_range;
4099  par->color_primaries = codec->color_primaries;
4100  par->color_trc = codec->color_trc;
4101  par->color_space = codec->colorspace;
4104  par->video_delay = codec->has_b_frames;
4105  break;
4106  case AVMEDIA_TYPE_AUDIO:
4107  par->format = codec->sample_fmt;
4108  par->channel_layout = codec->channel_layout;
4109  par->channels = codec->channels;
4110  par->sample_rate = codec->sample_rate;
4111  par->block_align = codec->block_align;
4112  par->frame_size = codec->frame_size;
4113  par->initial_padding = codec->initial_padding;
4114  par->seek_preroll = codec->seek_preroll;
4115  break;
4116  case AVMEDIA_TYPE_SUBTITLE:
4117  par->width = codec->width;
4118  par->height = codec->height;
4119  break;
4120  }
4121 
4122  if (codec->extradata) {
4124  if (!par->extradata)
4125  return AVERROR(ENOMEM);
4126  memcpy(par->extradata, codec->extradata, codec->extradata_size);
4127  par->extradata_size = codec->extradata_size;
4128  }
4129 
4130  return 0;
4131 }
4132 
4134  const AVCodecParameters *par)
4135 {
4136  codec->codec_type = par->codec_type;
4137  codec->codec_id = par->codec_id;
4138  codec->codec_tag = par->codec_tag;
4139 
4140  codec->bit_rate = par->bit_rate;
4143  codec->profile = par->profile;
4144  codec->level = par->level;
4145 
4146  switch (par->codec_type) {
4147  case AVMEDIA_TYPE_VIDEO:
4148  codec->pix_fmt = par->format;
4149  codec->width = par->width;
4150  codec->height = par->height;
4151  codec->field_order = par->field_order;
4152  codec->color_range = par->color_range;
4153  codec->color_primaries = par->color_primaries;
4154  codec->color_trc = par->color_trc;
4155  codec->colorspace = par->color_space;
4158  codec->has_b_frames = par->video_delay;
4159  break;
4160  case AVMEDIA_TYPE_AUDIO:
4161  codec->sample_fmt = par->format;
4162  codec->channel_layout = par->channel_layout;
4163  codec->channels = par->channels;
4164  codec->sample_rate = par->sample_rate;
4165  codec->block_align = par->block_align;
4166  codec->frame_size = par->frame_size;
4167  codec->delay =
4168  codec->initial_padding = par->initial_padding;
4169  codec->seek_preroll = par->seek_preroll;
4170  break;
4171  case AVMEDIA_TYPE_SUBTITLE:
4172  codec->width = par->width;
4173  codec->height = par->height;
4174  break;
4175  }
4176 
4177  if (par->extradata) {
4178  av_freep(&codec->extradata);
4180  if (!codec->extradata)
4181  return AVERROR(ENOMEM);
4182  memcpy(codec->extradata, par->extradata, par->extradata_size);
4183  codec->extradata_size = par->extradata_size;
4184  }
4185 
4186  return 0;
4187 }
4188 
4189 int ff_alloc_a53_sei(const AVFrame *frame, size_t prefix_len,
4190  void **data, size_t *sei_size)
4191 {
4192  AVFrameSideData *side_data = NULL;
4193  uint8_t *sei_data;
4194 
4195  if (frame)
4196  side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_A53_CC);
4197 
4198  if (!side_data) {
4199  *data = NULL;
4200  return 0;
4201  }
4202 
4203  *sei_size = side_data->size + 11;
4204  *data = av_mallocz(*sei_size + prefix_len);
4205  if (!*data)
4206  return AVERROR(ENOMEM);
4207  sei_data = (uint8_t*)*data + prefix_len;
4208 
4209  // country code
4210  sei_data[0] = 181;
4211  sei_data[1] = 0;
4212  sei_data[2] = 49;
4213 
4214  /**
4215  * 'GA94' is standard in North America for ATSC, but hard coding
4216  * this style may not be the right thing to do -- other formats
4217  * do exist. This information is not available in the side_data
4218  * so we are going with this right now.
4219  */
4220  AV_WL32(sei_data + 3, MKTAG('G', 'A', '9', '4'));
4221  sei_data[7] = 3;
4222  sei_data[8] = ((side_data->size/3) & 0x1f) | 0x40;
4223  sei_data[9] = 0;
4224 
4225  memcpy(sei_data + 10, side_data->data, side_data->size);
4226 
4227  sei_data[side_data->size+10] = 255;
4228 
4229  return 0;
4230 }
#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:2879
static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
Definition: utils.c:2056
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:4029
float, planar
Definition: samplefmt.h:69
#define UTF8_MAX_BYTES
Definition: utils.c:2438
#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:3419
#define NULL
Definition: coverity.c:32
const struct AVCodec * codec
Definition: avcodec.h:1666
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:3355
const char const char void * val
Definition: avisynth_c.h:634
#define avpriv_atomic_int_add_and_fetch
Definition: atomic_gcc.h:50
enum AVFieldOrder field_order
Video only.
Definition: avcodec.h:4020
static int64_t get_bit_rate(AVCodecContext *ctx)
Definition: utils.c:1173
const AVCodecDescriptor * codec_descriptor
AVCodecDescriptor Code outside libavcodec should access this field using: av_codec_{get,set}_codec_descriptor(avctx)
Definition: avcodec.h:3380
static AVCodec * find_encdec(enum AVCodecID id, int encoder)
Definition: utils.c:3026
planar YUV 4:4:0,20bpp, (1 Cr & Cb sample per 1x2 Y samples), little-endian
Definition: pixfmt.h:288
const char * s
Definition: avisynth_c.h:631
planar YUV 4:4:4,42bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
Definition: pixfmt.h:265
enum AVColorTransferCharacteristic color_trc
Definition: avcodec.h:4027
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
enum AVCodecID codec_id
Definition: ffmpeg_vaapi.c:149
Number of sample formats. DO NOT USE if linking dynamically.
Definition: samplefmt.h:72
static enum AVPixelFormat pix_fmt
#define AV_NUM_DATA_POINTERS
Definition: frame.h:185
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:1349
planar YUV 4:2:0,21bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
Definition: pixfmt.h:258
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:3418
int64_t pts_correction_num_faulty_dts
Number of incorrect PTS values so far.
Definition: avcodec.h:3399
int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
Set various frame properties from the codec context / packet data.
Definition: utils.c:851
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:2263
This structure describes decoded (raw) audio or video data.
Definition: frame.h:184
int(* send_packet)(AVCodecContext *avctx, const AVPacket *avpkt)
Definition: avcodec.h:3656
AVCodec * avcodec_find_encoder(enum AVCodecID id)
Find a registered encoder with a matching codec ID.
Definition: utils.c:3044
int(* init)(AVCodecContext *avctx)
Initialize the hwaccel private data.
Definition: avcodec.h:3796
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:262
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:934
int coded_width
Bitstream width / height, may be different from width/height e.g.
Definition: avcodec.h:1859
int capabilities
Hardware accelerated codec capabilities.
Definition: avcodec.h:3712
const char * fmt
Definition: avisynth_c.h:632
void(* flush)(AVCodecContext *)
Flush buffers.
Definition: avcodec.h:3663
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:3741
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:6026
#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:1722
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2303
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:1608
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:363
const char * g
Definition: vf_curves.c:112
const char * desc
Definition: nvenc.c:89
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:4015
int rc_initial_buffer_occupancy
Number of bits which should be loaded into the rc buffer before decoding starts.
Definition: avcodec.h:2695
static int do_decode(AVCodecContext *avctx, AVPacket *pkt)
Definition: utils.c:2713
int attribute_align_arg avcodec_receive_packet(AVCodecContext *avctx, AVPacket *avpkt)
Read encoded data from the encoder.
Definition: utils.c:2927
planar YUV 4:4:4,36bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
Definition: pixfmt.h:263
This side data should be associated with a video stream and contains Stereoscopic 3D information in f...
Definition: avcodec.h:1418
void av_opt_set_defaults(void *s)
Set the values of all AVOption fields to their default values.
Definition: opt.c:1264
const char * avcodec_configuration(void)
Return the libavcodec build-time configuration.
Definition: utils.c:3338
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition: avcodec.h:2393
int nb_extended_buf
Number of elements in extended_buf.
Definition: frame.h:381
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: avcodec.h:3939
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:180
int ff_unlock_avcodec(const AVCodec *codec)
Definition: utils.c:3799
int num
numerator
Definition: rational.h:44
#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:3417
int size
Definition: avcodec.h:1589
const char * b
Definition: vf_curves.c:113
const char * avcodec_license(void)
Return the libavcodec license.
Definition: utils.c:3343
enum AVPixelFormat pix_fmt
Supported pixel format.
Definition: avcodec.h:3706
static int get_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
Definition: utils.c:880
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:2068
static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
Pad last frame with silence.
Definition: utils.c:1739
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:200
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:1776
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:721
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1885
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:216
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:2281
enum AVPixelFormat format
The pixel format identifying the underlying HW surface type.
Definition: hwcontext.h:201
Mastering display metadata associated with a video frame.
Definition: frame.h:118
unsigned num_rects
Definition: avcodec.h:3919
int avpriv_codec_get_cap_skip_frame_fill_param(const AVCodec *codec)
Definition: utils.c:1163
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:268
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:1011
void av_frame_move_ref(AVFrame *dst, AVFrame *src)
Move everything contained in src to dst and reset src.
Definition: frame.c:508
mpegvideo header.
enum AVMediaType type
Definition: avcodec.h:3572
static int convert_sub_to_old_ass_form(AVSubtitle *sub, const AVPacket *pkt, AVRational tb)
Definition: utils.c:2531
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:3102
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:3642
static AVPacket pkt
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:3057
enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
Wrapper around get_format() for frame-multithreaded codecs.
Definition: utils.c:3864
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:1031
int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub, int *got_sub_ptr, AVPacket *avpkt)
Decode a subtitle message.
Definition: utils.c:2589
static AVRational av_make_q(int num, int den)
Create a rational.
Definition: rational.h:53
void av_frame_set_pkt_size(AVFrame *frame, int val)
int profile
profile
Definition: avcodec.h:3161
planar GBR 4:4:4 36bpp, big-endian
Definition: pixfmt.h:267
AVCodec.
Definition: avcodec.h:3559
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:2455
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:3931
AVLockOp
Lock operation used by lockmgr.
Definition: avcodec.h:6023
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:3903
enum AVColorSpace color_space
Definition: avcodec.h:4028
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:2594
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:3697
static void * codec_mutex
Definition: utils.c:117
int frame_size
Audio only.
Definition: avcodec.h:4060
Mastering display metadata (based on SMPTE-2086:2014).
Definition: avcodec.h:1526
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avcodec.h:1794
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:652
AVSubtitleRect ** rects
Definition: avcodec.h:3920
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:2483
void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
Definition: utils.c:3907
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:1328
planar YUV 4:2:0 22.5bpp, (1 Cr & Cb sample per 2x2 Y & A samples), little-endian ...
Definition: pixfmt.h:190
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:3260
struct AVHWAccel * hwaccel
Hardware accelerator in use.
Definition: avcodec.h:2976
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:981
#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:229
Public dictionary API.
planar YUV 4:2:0 40bpp, (1 Cr & Cb sample per 2x2 Y & A samples, big-endian)
Definition: pixfmt.h:201
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
HMTX pthread_mutex_t
Definition: os2threads.h:49
int height
Definition: internal.h:96
void av_packet_free(AVPacket **pkt)
Free the packet, if the packet is reference counted, it will be unreferenced first.
Definition: avpacket.c:62
enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
Definition: utils.c:1026
enum AVSampleFormat sample_fmt
audio sample format
Definition: avcodec.h:2426
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
Lock the mutex.
Definition: avcodec.h:6025
uint8_t
#define av_cold
Definition: attributes.h:82
#define av_malloc(s)
AV_SAMPLE_FMT_U8
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:140
Opaque data information usually continuous.
Definition: avutil.h:195
int width
Video only.
Definition: avcodec.h:4005
int av_packet_unpack_dictionary(const uint8_t *data, int size, AVDictionary **dict)
Unpack a dictionary from side_data.
Definition: avpacket.c:490
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
Definition: avassert.h:63
8 bits with AV_PIX_FMT_RGB32 palette
Definition: pixfmt.h:73
AVOptions.
AVCodecParameters * avcodec_parameters_alloc(void)
Allocate a new AVCodecParameters and set its fields to default values (unknown/invalid/0).
Definition: utils.c:4038
int avpriv_set_systematic_pal2(uint32_t pal[256], enum AVPixelFormat pix_fmt)
Definition: imgutils.c:151
const char * av_color_range_name(enum AVColorRange range)
Definition: pixdesc.c:2576
void * thread_ctx
Definition: internal.h:138
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
static int setup_hwaccel(AVCodecContext *avctx, const enum AVPixelFormat fmt, const char *name)
Definition: utils.c:1045
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: avcodec.h:1606
static AVCodec * first_avcodec
Definition: utils.c:145
This side data contains a 3x3 transformation matrix describing an affine transformation that needs to...
Definition: avcodec.h:1412
int ff_side_data_update_matrix_encoding(AVFrame *frame, enum AVMatrixEncoding matrix_encoding)
Add or update AV_FRAME_DATA_MATRIXENCODING side data.
Definition: utils.c:240
#define AV_WL8(p, d)
Definition: intreadwrite.h:399
Multithreading support functions.
#define AV_NE(be, le)
Definition: common.h:50
int av_frame_ref(AVFrame *dst, const AVFrame *src)
Set up a new reference to the data described by the source frame.
Definition: frame.c:374
planar YUV 4:4:4,36bpp, (1 Cr & Cb sample per 1x1 Y samples), little-endian
Definition: pixfmt.h:264
#define FF_CODEC_PROPERTY_LOSSLESS
Definition: avcodec.h:3489
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:268
#define LIBAVCODEC_VERSION_INT
Definition: version.h:34
int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
Identical in function to av_frame_make_writable(), except it uses ff_get_buffer() to allocate the buf...
Definition: utils.c:977
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:1772
#define LICENSE_PREFIX
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_RB32
Definition: bytestream.h:87
int avcodec_parameters_to_context(AVCodecContext *codec, const AVCodecParameters *par)
Fill the codec context based on the values from the supplied codec parameters.
Definition: utils.c:4133
static AVFrame * frame
planar YUV 4:2:0 40bpp, (1 Cr & Cb sample per 2x2 Y & A samples, little-endian)
Definition: pixfmt.h:202
AVCPBProperties * ff_add_cpb_side_data(AVCodecContext *avctx)
Add a CPB properties side data to an encoding context.
Definition: utils.c:3992
int planes
Definition: internal.h:99
void * frame_thread_encoder
Definition: internal.h:152
int initial_padding
Audio only.
Definition: avcodec.h:4068
Structure to hold side data for an AVFrame.
Definition: frame.h:143
int av_image_check_sar(unsigned int w, unsigned int h, AVRational sar)
Check if the given sample aspect ratio of an image is valid.
Definition: imgutils.c:266
int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
Call avcodec_open2 recursively by decrementing counter, unlocking mutex, calling the function and the...
Definition: utils.c:1196
static void validate_avframe_allocation(AVCodecContext *avctx, AVFrame *frame)
Definition: utils.c:856
planar YUV 4:4:0,20bpp, (1 Cr & Cb sample per 1x2 Y samples), big-endian
Definition: pixfmt.h:289
uint8_t * data
Definition: avcodec.h:1588
planar GBR 4:4:4 48bpp, big-endian
Definition: pixfmt.h:185
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range...
Definition: pixfmt.h:101
static int(* lockmgr_cb)(void **mutex, enum AVLockOp op)
Definition: utils.c:111
AVRational av_mul_q(AVRational b, AVRational c)
Multiply two rationals.
Definition: rational.c:80
void av_packet_move_ref(AVPacket *dst, AVPacket *src)
Move every field in src to dst and reset src.
Definition: avpacket.c:617
int ff_init_buffer_info(AVCodecContext *avctx, AVFrame *frame)
does needed setup of pkt_pts/pos and such for (re)get_buffer();
Definition: utils.c:752
uint32_t tag
Definition: movenc.c:1376
Definition: