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utils.c
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1 /*
2  * utils for libavcodec
3  * Copyright (c) 2001 Fabrice Bellard
4  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 /**
24  * @file
25  * utils.
26  */
27 
28 #include "config.h"
29 #include "libavutil/atomic.h"
30 #include "libavutil/attributes.h"
31 #include "libavutil/avassert.h"
32 #include "libavutil/avstring.h"
33 #include "libavutil/bprint.h"
35 #include "libavutil/crc.h"
36 #include "libavutil/frame.h"
37 #include "libavutil/hwcontext.h"
38 #include "libavutil/internal.h"
39 #include "libavutil/mathematics.h"
40 #include "libavutil/mem_internal.h"
41 #include "libavutil/pixdesc.h"
42 #include "libavutil/imgutils.h"
43 #include "libavutil/samplefmt.h"
44 #include "libavutil/dict.h"
45 #include "libavutil/thread.h"
46 #include "avcodec.h"
47 #include "libavutil/opt.h"
48 #include "me_cmp.h"
49 #include "mpegvideo.h"
50 #include "thread.h"
51 #include "frame_thread_encoder.h"
52 #include "internal.h"
53 #include "raw.h"
54 #include "bytestream.h"
55 #include "version.h"
56 #include <stdlib.h>
57 #include <stdarg.h>
58 #include <limits.h>
59 #include <float.h>
60 #if CONFIG_ICONV
61 # include <iconv.h>
62 #endif
63 
64 #include "libavutil/ffversion.h"
65 const char av_codec_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
66 
67 #if HAVE_PTHREADS || HAVE_W32THREADS || HAVE_OS2THREADS
68 static int default_lockmgr_cb(void **arg, enum AVLockOp op)
69 {
70  void * volatile * mutex = arg;
71  int err;
72 
73  switch (op) {
74  case AV_LOCK_CREATE:
75  return 0;
76  case AV_LOCK_OBTAIN:
77  if (!*mutex) {
79  if (!tmp)
80  return AVERROR(ENOMEM);
81  if ((err = pthread_mutex_init(tmp, NULL))) {
82  av_free(tmp);
83  return AVERROR(err);
84  }
85  if (avpriv_atomic_ptr_cas(mutex, NULL, tmp)) {
87  av_free(tmp);
88  }
89  }
90 
91  if ((err = pthread_mutex_lock(*mutex)))
92  return AVERROR(err);
93 
94  return 0;
95  case AV_LOCK_RELEASE:
96  if ((err = pthread_mutex_unlock(*mutex)))
97  return AVERROR(err);
98 
99  return 0;
100  case AV_LOCK_DESTROY:
101  if (*mutex)
102  pthread_mutex_destroy(*mutex);
103  av_free(*mutex);
104  avpriv_atomic_ptr_cas(mutex, *mutex, NULL);
105  return 0;
106  }
107  return 1;
108 }
109 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = default_lockmgr_cb;
110 #else
111 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = NULL;
112 #endif
113 
114 
115 volatile int ff_avcodec_locked;
116 static int volatile entangled_thread_counter = 0;
117 static void *codec_mutex;
118 static void *avformat_mutex;
119 
120 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
121 {
122  uint8_t **p = ptr;
123  if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
124  av_freep(p);
125  *size = 0;
126  return;
127  }
128  if (!ff_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE, 1))
129  memset(*p + min_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
130 }
131 
132 void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size)
133 {
134  uint8_t **p = ptr;
135  if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
136  av_freep(p);
137  *size = 0;
138  return;
139  }
140  if (!ff_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE, 1))
141  memset(*p, 0, min_size + AV_INPUT_BUFFER_PADDING_SIZE);
142 }
143 
144 /* encoder management */
147 
149 {
150  if (c)
151  return c->next;
152  else
153  return first_avcodec;
154 }
155 
156 static av_cold void avcodec_init(void)
157 {
158  static int initialized = 0;
159 
160  if (initialized != 0)
161  return;
162  initialized = 1;
163 
164  if (CONFIG_ME_CMP)
166 }
167 
168 int av_codec_is_encoder(const AVCodec *codec)
169 {
170  return codec && (codec->encode_sub || codec->encode2 ||codec->send_frame);
171 }
172 
173 int av_codec_is_decoder(const AVCodec *codec)
174 {
175  return codec && (codec->decode || codec->send_packet);
176 }
177 
179 {
180  AVCodec **p;
181  avcodec_init();
182  p = last_avcodec;
183  codec->next = NULL;
184 
185  while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, codec))
186  p = &(*p)->next;
187  last_avcodec = &codec->next;
188 
189  if (codec->init_static_data)
190  codec->init_static_data(codec);
191 }
192 
193 #if FF_API_EMU_EDGE
195 {
196  return EDGE_WIDTH;
197 }
198 #endif
199 
200 #if FF_API_SET_DIMENSIONS
202 {
203  int ret = ff_set_dimensions(s, width, height);
204  if (ret < 0) {
205  av_log(s, AV_LOG_WARNING, "Failed to set dimensions %d %d\n", width, height);
206  }
207 }
208 #endif
209 
211 {
212  int ret = av_image_check_size2(width, height, s->max_pixels, AV_PIX_FMT_NONE, 0, s);
213 
214  if (ret < 0)
215  width = height = 0;
216 
217  s->coded_width = width;
218  s->coded_height = height;
219  s->width = AV_CEIL_RSHIFT(width, s->lowres);
220  s->height = AV_CEIL_RSHIFT(height, s->lowres);
221 
222  return ret;
223 }
224 
226 {
227  int ret = av_image_check_sar(avctx->width, avctx->height, sar);
228 
229  if (ret < 0) {
230  av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %d/%d\n",
231  sar.num, sar.den);
232  avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
233  return ret;
234  } else {
235  avctx->sample_aspect_ratio = sar;
236  }
237  return 0;
238 }
239 
241  enum AVMatrixEncoding matrix_encoding)
242 {
243  AVFrameSideData *side_data;
244  enum AVMatrixEncoding *data;
245 
247  if (!side_data)
249  sizeof(enum AVMatrixEncoding));
250 
251  if (!side_data)
252  return AVERROR(ENOMEM);
253 
254  data = (enum AVMatrixEncoding*)side_data->data;
255  *data = matrix_encoding;
256 
257  return 0;
258 }
259 
261  int linesize_align[AV_NUM_DATA_POINTERS])
262 {
263  int i;
264  int w_align = 1;
265  int h_align = 1;
267 
268  if (desc) {
269  w_align = 1 << desc->log2_chroma_w;
270  h_align = 1 << desc->log2_chroma_h;
271  }
272 
273  switch (s->pix_fmt) {
274  case AV_PIX_FMT_YUV420P:
275  case AV_PIX_FMT_YUYV422:
276  case AV_PIX_FMT_YVYU422:
277  case AV_PIX_FMT_UYVY422:
278  case AV_PIX_FMT_YUV422P:
279  case AV_PIX_FMT_YUV440P:
280  case AV_PIX_FMT_YUV444P:
281  case AV_PIX_FMT_GBRP:
282  case AV_PIX_FMT_GBRAP:
283  case AV_PIX_FMT_GRAY8:
284  case AV_PIX_FMT_GRAY16BE:
285  case AV_PIX_FMT_GRAY16LE:
286  case AV_PIX_FMT_YUVJ420P:
287  case AV_PIX_FMT_YUVJ422P:
288  case AV_PIX_FMT_YUVJ440P:
289  case AV_PIX_FMT_YUVJ444P:
290  case AV_PIX_FMT_YUVA420P:
291  case AV_PIX_FMT_YUVA422P:
292  case AV_PIX_FMT_YUVA444P:
345  case AV_PIX_FMT_GBRP9LE:
346  case AV_PIX_FMT_GBRP9BE:
347  case AV_PIX_FMT_GBRP10LE:
348  case AV_PIX_FMT_GBRP10BE:
349  case AV_PIX_FMT_GBRP12LE:
350  case AV_PIX_FMT_GBRP12BE:
351  case AV_PIX_FMT_GBRP14LE:
352  case AV_PIX_FMT_GBRP14BE:
353  case AV_PIX_FMT_GBRP16LE:
354  case AV_PIX_FMT_GBRP16BE:
359  w_align = 16; //FIXME assume 16 pixel per macroblock
360  h_align = 16 * 2; // interlaced needs 2 macroblocks height
361  break;
362  case AV_PIX_FMT_YUV411P:
363  case AV_PIX_FMT_YUVJ411P:
365  w_align = 32;
366  h_align = 16 * 2;
367  break;
368  case AV_PIX_FMT_YUV410P:
369  if (s->codec_id == AV_CODEC_ID_SVQ1) {
370  w_align = 64;
371  h_align = 64;
372  }
373  break;
374  case AV_PIX_FMT_RGB555:
375  if (s->codec_id == AV_CODEC_ID_RPZA) {
376  w_align = 4;
377  h_align = 4;
378  }
380  w_align = 8;
381  h_align = 8;
382  }
383  break;
384  case AV_PIX_FMT_PAL8:
385  case AV_PIX_FMT_BGR8:
386  case AV_PIX_FMT_RGB8:
387  if (s->codec_id == AV_CODEC_ID_SMC ||
389  w_align = 4;
390  h_align = 4;
391  }
392  if (s->codec_id == AV_CODEC_ID_JV ||
394  w_align = 8;
395  h_align = 8;
396  }
397  break;
398  case AV_PIX_FMT_BGR24:
399  if ((s->codec_id == AV_CODEC_ID_MSZH) ||
400  (s->codec_id == AV_CODEC_ID_ZLIB)) {
401  w_align = 4;
402  h_align = 4;
403  }
404  break;
405  case AV_PIX_FMT_RGB24:
406  if (s->codec_id == AV_CODEC_ID_CINEPAK) {
407  w_align = 4;
408  h_align = 4;
409  }
410  break;
411  default:
412  break;
413  }
414 
415  if (s->codec_id == AV_CODEC_ID_IFF_ILBM) {
416  w_align = FFMAX(w_align, 8);
417  }
418 
419  *width = FFALIGN(*width, w_align);
420  *height = FFALIGN(*height, h_align);
421  if (s->codec_id == AV_CODEC_ID_H264 || s->lowres) {
422  // some of the optimized chroma MC reads one line too much
423  // which is also done in mpeg decoders with lowres > 0
424  *height += 2;
425 
426  // H.264 uses edge emulation for out of frame motion vectors, for this
427  // it requires a temporary area large enough to hold a 21x21 block,
428  // increasing witdth ensure that the temporary area is large enough,
429  // the next rounded up width is 32
430  *width = FFMAX(*width, 32);
431  }
432 
433  for (i = 0; i < 4; i++)
434  linesize_align[i] = STRIDE_ALIGN;
435 }
436 
438 {
440  int chroma_shift = desc->log2_chroma_w;
441  int linesize_align[AV_NUM_DATA_POINTERS];
442  int align;
443 
444  avcodec_align_dimensions2(s, width, height, linesize_align);
445  align = FFMAX(linesize_align[0], linesize_align[3]);
446  linesize_align[1] <<= chroma_shift;
447  linesize_align[2] <<= chroma_shift;
448  align = FFMAX3(align, linesize_align[1], linesize_align[2]);
449  *width = FFALIGN(*width, align);
450 }
451 
452 int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
453 {
454  if (pos <= AVCHROMA_LOC_UNSPECIFIED || pos >= AVCHROMA_LOC_NB)
455  return AVERROR(EINVAL);
456  pos--;
457 
458  *xpos = (pos&1) * 128;
459  *ypos = ((pos>>1)^(pos<4)) * 128;
460 
461  return 0;
462 }
463 
465 {
466  int pos, xout, yout;
467 
468  for (pos = AVCHROMA_LOC_UNSPECIFIED + 1; pos < AVCHROMA_LOC_NB; pos++) {
469  if (avcodec_enum_to_chroma_pos(&xout, &yout, pos) == 0 && xout == xpos && yout == ypos)
470  return pos;
471  }
473 }
474 
476  enum AVSampleFormat sample_fmt, const uint8_t *buf,
477  int buf_size, int align)
478 {
479  int ch, planar, needed_size, ret = 0;
480 
481  needed_size = av_samples_get_buffer_size(NULL, nb_channels,
482  frame->nb_samples, sample_fmt,
483  align);
484  if (buf_size < needed_size)
485  return AVERROR(EINVAL);
486 
487  planar = av_sample_fmt_is_planar(sample_fmt);
488  if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
489  if (!(frame->extended_data = av_mallocz_array(nb_channels,
490  sizeof(*frame->extended_data))))
491  return AVERROR(ENOMEM);
492  } else {
493  frame->extended_data = frame->data;
494  }
495 
496  if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
497  (uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
498  sample_fmt, align)) < 0) {
499  if (frame->extended_data != frame->data)
500  av_freep(&frame->extended_data);
501  return ret;
502  }
503  if (frame->extended_data != frame->data) {
504  for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
505  frame->data[ch] = frame->extended_data[ch];
506  }
507 
508  return ret;
509 }
510 
512 {
513  FramePool *pool = avctx->internal->pool;
514  int i, ret;
515 
516  switch (avctx->codec_type) {
517  case AVMEDIA_TYPE_VIDEO: {
518  uint8_t *data[4];
519  int linesize[4];
520  int size[4] = { 0 };
521  int w = frame->width;
522  int h = frame->height;
523  int tmpsize, unaligned;
524 
525  if (pool->format == frame->format &&
526  pool->width == frame->width && pool->height == frame->height)
527  return 0;
528 
529  avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
530 
531  do {
532  // NOTE: do not align linesizes individually, this breaks e.g. assumptions
533  // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
534  ret = av_image_fill_linesizes(linesize, avctx->pix_fmt, w);
535  if (ret < 0)
536  return ret;
537  // increase alignment of w for next try (rhs gives the lowest bit set in w)
538  w += w & ~(w - 1);
539 
540  unaligned = 0;
541  for (i = 0; i < 4; i++)
542  unaligned |= linesize[i] % pool->stride_align[i];
543  } while (unaligned);
544 
545  tmpsize = av_image_fill_pointers(data, avctx->pix_fmt, h,
546  NULL, linesize);
547  if (tmpsize < 0)
548  return -1;
549 
550  for (i = 0; i < 3 && data[i + 1]; i++)
551  size[i] = data[i + 1] - data[i];
552  size[i] = tmpsize - (data[i] - data[0]);
553 
554  for (i = 0; i < 4; i++) {
555  av_buffer_pool_uninit(&pool->pools[i]);
556  pool->linesize[i] = linesize[i];
557  if (size[i]) {
558  pool->pools[i] = av_buffer_pool_init(size[i] + 16 + STRIDE_ALIGN - 1,
559  CONFIG_MEMORY_POISONING ?
560  NULL :
562  if (!pool->pools[i]) {
563  ret = AVERROR(ENOMEM);
564  goto fail;
565  }
566  }
567  }
568  pool->format = frame->format;
569  pool->width = frame->width;
570  pool->height = frame->height;
571 
572  break;
573  }
574  case AVMEDIA_TYPE_AUDIO: {
575  int ch = av_frame_get_channels(frame); //av_get_channel_layout_nb_channels(frame->channel_layout);
576  int planar = av_sample_fmt_is_planar(frame->format);
577  int planes = planar ? ch : 1;
578 
579  if (pool->format == frame->format && pool->planes == planes &&
580  pool->channels == ch && frame->nb_samples == pool->samples)
581  return 0;
582 
583  av_buffer_pool_uninit(&pool->pools[0]);
584  ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
585  frame->nb_samples, frame->format, 0);
586  if (ret < 0)
587  goto fail;
588 
589  pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
590  if (!pool->pools[0]) {
591  ret = AVERROR(ENOMEM);
592  goto fail;
593  }
594 
595  pool->format = frame->format;
596  pool->planes = planes;
597  pool->channels = ch;
598  pool->samples = frame->nb_samples;
599  break;
600  }
601  default: av_assert0(0);
602  }
603  return 0;
604 fail:
605  for (i = 0; i < 4; i++)
606  av_buffer_pool_uninit(&pool->pools[i]);
607  pool->format = -1;
608  pool->planes = pool->channels = pool->samples = 0;
609  pool->width = pool->height = 0;
610  return ret;
611 }
612 
614 {
615  FramePool *pool = avctx->internal->pool;
616  int planes = pool->planes;
617  int i;
618 
619  frame->linesize[0] = pool->linesize[0];
620 
621  if (planes > AV_NUM_DATA_POINTERS) {
622  frame->extended_data = av_mallocz_array(planes, sizeof(*frame->extended_data));
623  frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
625  sizeof(*frame->extended_buf));
626  if (!frame->extended_data || !frame->extended_buf) {
627  av_freep(&frame->extended_data);
628  av_freep(&frame->extended_buf);
629  return AVERROR(ENOMEM);
630  }
631  } else {
632  frame->extended_data = frame->data;
633  av_assert0(frame->nb_extended_buf == 0);
634  }
635 
636  for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
637  frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
638  if (!frame->buf[i])
639  goto fail;
640  frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
641  }
642  for (i = 0; i < frame->nb_extended_buf; i++) {
643  frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
644  if (!frame->extended_buf[i])
645  goto fail;
646  frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
647  }
648 
649  if (avctx->debug & FF_DEBUG_BUFFERS)
650  av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
651 
652  return 0;
653 fail:
654  av_frame_unref(frame);
655  return AVERROR(ENOMEM);
656 }
657 
659 {
660  FramePool *pool = s->internal->pool;
662  int i;
663 
664  if (pic->data[0] || pic->data[1] || pic->data[2] || pic->data[3]) {
665  av_log(s, AV_LOG_ERROR, "pic->data[*]!=NULL in avcodec_default_get_buffer\n");
666  return -1;
667  }
668 
669  if (!desc) {
670  av_log(s, AV_LOG_ERROR,
671  "Unable to get pixel format descriptor for format %s\n",
673  return AVERROR(EINVAL);
674  }
675 
676  memset(pic->data, 0, sizeof(pic->data));
677  pic->extended_data = pic->data;
678 
679  for (i = 0; i < 4 && pool->pools[i]; i++) {
680  pic->linesize[i] = pool->linesize[i];
681 
682  pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
683  if (!pic->buf[i])
684  goto fail;
685 
686  pic->data[i] = pic->buf[i]->data;
687  }
688  for (; i < AV_NUM_DATA_POINTERS; i++) {
689  pic->data[i] = NULL;
690  pic->linesize[i] = 0;
691  }
692  if (desc->flags & AV_PIX_FMT_FLAG_PAL ||
694  avpriv_set_systematic_pal2((uint32_t *)pic->data[1], pic->format);
695 
696  if (s->debug & FF_DEBUG_BUFFERS)
697  av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
698 
699  return 0;
700 fail:
701  av_frame_unref(pic);
702  return AVERROR(ENOMEM);
703 }
704 
705 void ff_color_frame(AVFrame *frame, const int c[4])
706 {
708  int p, y, x;
709 
711 
712  for (p = 0; p<desc->nb_components; p++) {
713  uint8_t *dst = frame->data[p];
714  int is_chroma = p == 1 || p == 2;
715  int bytes = is_chroma ? AV_CEIL_RSHIFT(frame->width, desc->log2_chroma_w) : frame->width;
716  int height = is_chroma ? AV_CEIL_RSHIFT(frame->height, desc->log2_chroma_h) : frame->height;
717  for (y = 0; y < height; y++) {
718  if (desc->comp[0].depth >= 9) {
719  for (x = 0; x<bytes; x++)
720  ((uint16_t*)dst)[x] = c[p];
721  }else
722  memset(dst, c[p], bytes);
723  dst += frame->linesize[p];
724  }
725  }
726 }
727 
729 {
730  int ret;
731 
732  if (avctx->hw_frames_ctx)
733  return av_hwframe_get_buffer(avctx->hw_frames_ctx, frame, 0);
734 
735  if ((ret = update_frame_pool(avctx, frame)) < 0)
736  return ret;
737 
738  switch (avctx->codec_type) {
739  case AVMEDIA_TYPE_VIDEO:
740  return video_get_buffer(avctx, frame);
741  case AVMEDIA_TYPE_AUDIO:
742  return audio_get_buffer(avctx, frame);
743  default:
744  return -1;
745  }
746 }
747 
749 {
750  int size;
751  const uint8_t *side_metadata;
752 
753  AVDictionary **frame_md = avpriv_frame_get_metadatap(frame);
754 
755  side_metadata = av_packet_get_side_data(avpkt,
757  return av_packet_unpack_dictionary(side_metadata, size, frame_md);
758 }
759 
761 {
762  AVPacket *pkt = avctx->internal->pkt;
763  int i;
764  static const struct {
765  enum AVPacketSideDataType packet;
767  } sd[] = {
774  };
775 
776  if (pkt) {
777  frame->pts = pkt->pts;
778 #if FF_API_PKT_PTS
780  frame->pkt_pts = pkt->pts;
782 #endif
783  av_frame_set_pkt_pos (frame, pkt->pos);
784  av_frame_set_pkt_duration(frame, pkt->duration);
785  av_frame_set_pkt_size (frame, pkt->size);
786 
787  for (i = 0; i < FF_ARRAY_ELEMS(sd); i++) {
788  int size;
789  uint8_t *packet_sd = av_packet_get_side_data(pkt, sd[i].packet, &size);
790  if (packet_sd) {
791  AVFrameSideData *frame_sd = av_frame_new_side_data(frame,
792  sd[i].frame,
793  size);
794  if (!frame_sd)
795  return AVERROR(ENOMEM);
796 
797  memcpy(frame_sd->data, packet_sd, size);
798  }
799  }
800  add_metadata_from_side_data(pkt, frame);
801 
802  if (pkt->flags & AV_PKT_FLAG_DISCARD) {
803  frame->flags |= AV_FRAME_FLAG_DISCARD;
804  } else {
805  frame->flags = (frame->flags & ~AV_FRAME_FLAG_DISCARD);
806  }
807  } else {
808  frame->pts = AV_NOPTS_VALUE;
809 #if FF_API_PKT_PTS
811  frame->pkt_pts = AV_NOPTS_VALUE;
813 #endif
814  av_frame_set_pkt_pos (frame, -1);
815  av_frame_set_pkt_duration(frame, 0);
816  av_frame_set_pkt_size (frame, -1);
817  }
818  frame->reordered_opaque = avctx->reordered_opaque;
819 
821  frame->color_primaries = avctx->color_primaries;
822  if (frame->color_trc == AVCOL_TRC_UNSPECIFIED)
823  frame->color_trc = avctx->color_trc;
825  av_frame_set_colorspace(frame, avctx->colorspace);
827  av_frame_set_color_range(frame, avctx->color_range);
829  frame->chroma_location = avctx->chroma_sample_location;
830 
831  switch (avctx->codec->type) {
832  case AVMEDIA_TYPE_VIDEO:
833  frame->format = avctx->pix_fmt;
834  if (!frame->sample_aspect_ratio.num)
836 
837  if (frame->width && frame->height &&
838  av_image_check_sar(frame->width, frame->height,
839  frame->sample_aspect_ratio) < 0) {
840  av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
841  frame->sample_aspect_ratio.num,
842  frame->sample_aspect_ratio.den);
843  frame->sample_aspect_ratio = (AVRational){ 0, 1 };
844  }
845 
846  break;
847  case AVMEDIA_TYPE_AUDIO:
848  if (!frame->sample_rate)
849  frame->sample_rate = avctx->sample_rate;
850  if (frame->format < 0)
851  frame->format = avctx->sample_fmt;
852  if (!frame->channel_layout) {
853  if (avctx->channel_layout) {
855  avctx->channels) {
856  av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
857  "configuration.\n");
858  return AVERROR(EINVAL);
859  }
860 
861  frame->channel_layout = avctx->channel_layout;
862  } else {
863  if (avctx->channels > FF_SANE_NB_CHANNELS) {
864  av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
865  avctx->channels);
866  return AVERROR(ENOSYS);
867  }
868  }
869  }
870  av_frame_set_channels(frame, avctx->channels);
871  break;
872  }
873  return 0;
874 }
875 
877 {
878  return ff_init_buffer_info(avctx, frame);
879 }
880 
882 {
883  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
884  int i;
885  int num_planes = av_pix_fmt_count_planes(frame->format);
887  int flags = desc ? desc->flags : 0;
888  if (num_planes == 1 && (flags & AV_PIX_FMT_FLAG_PAL))
889  num_planes = 2;
890  for (i = 0; i < num_planes; i++) {
891  av_assert0(frame->data[i]);
892  }
893  // For now do not enforce anything for palette of pseudopal formats
894  if (num_planes == 1 && (flags & AV_PIX_FMT_FLAG_PSEUDOPAL))
895  num_planes = 2;
896  // For formats without data like hwaccel allow unused pointers to be non-NULL.
897  for (i = num_planes; num_planes > 0 && i < FF_ARRAY_ELEMS(frame->data); i++) {
898  if (frame->data[i])
899  av_log(avctx, AV_LOG_ERROR, "Buffer returned by get_buffer2() did not zero unused plane pointers\n");
900  frame->data[i] = NULL;
901  }
902  }
903 }
904 
906 {
907  const AVHWAccel *hwaccel = avctx->hwaccel;
908  int override_dimensions = 1;
909  int ret;
910 
911  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
912  if ((ret = av_image_check_size2(avctx->width, avctx->height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx)) < 0 || avctx->pix_fmt<0) {
913  av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
914  return AVERROR(EINVAL);
915  }
916 
917  if (frame->width <= 0 || frame->height <= 0) {
918  frame->width = FFMAX(avctx->width, AV_CEIL_RSHIFT(avctx->coded_width, avctx->lowres));
919  frame->height = FFMAX(avctx->height, AV_CEIL_RSHIFT(avctx->coded_height, avctx->lowres));
920  override_dimensions = 0;
921  }
922 
923  if (frame->data[0] || frame->data[1] || frame->data[2] || frame->data[3]) {
924  av_log(avctx, AV_LOG_ERROR, "pic->data[*]!=NULL in get_buffer_internal\n");
925  return AVERROR(EINVAL);
926  }
927  }
928  ret = ff_decode_frame_props(avctx, frame);
929  if (ret < 0)
930  return ret;
931 
932  if (hwaccel) {
933  if (hwaccel->alloc_frame) {
934  ret = hwaccel->alloc_frame(avctx, frame);
935  goto end;
936  }
937  } else
938  avctx->sw_pix_fmt = avctx->pix_fmt;
939 
940  ret = avctx->get_buffer2(avctx, frame, flags);
941  if (ret >= 0)
942  validate_avframe_allocation(avctx, frame);
943 
944 end:
945  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions) {
946  frame->width = avctx->width;
947  frame->height = avctx->height;
948  }
949 
950  return ret;
951 }
952 
954 {
955  int ret = get_buffer_internal(avctx, frame, flags);
956  if (ret < 0) {
957  av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
958  frame->width = frame->height = 0;
959  }
960  return ret;
961 }
962 
964 {
965  AVFrame *tmp;
966  int ret;
967 
969 
970  if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
971  av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
972  frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt));
973  av_frame_unref(frame);
974  }
975 
976  ff_init_buffer_info(avctx, frame);
977 
978  if (!frame->data[0])
979  return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
980 
981  if (av_frame_is_writable(frame))
982  return ff_decode_frame_props(avctx, frame);
983 
984  tmp = av_frame_alloc();
985  if (!tmp)
986  return AVERROR(ENOMEM);
987 
988  av_frame_move_ref(tmp, frame);
989 
990  ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
991  if (ret < 0) {
992  av_frame_free(&tmp);
993  return ret;
994  }
995 
996  av_frame_copy(frame, tmp);
997  av_frame_free(&tmp);
998 
999  return 0;
1000 }
1001 
1003 {
1004  int ret = reget_buffer_internal(avctx, frame);
1005  if (ret < 0)
1006  av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
1007  return ret;
1008 }
1009 
1010 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
1011 {
1012  int i;
1013 
1014  for (i = 0; i < count; i++) {
1015  int r = func(c, (char *)arg + i * size);
1016  if (ret)
1017  ret[i] = r;
1018  }
1019  emms_c();
1020  return 0;
1021 }
1022 
1023 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
1024 {
1025  int i;
1026 
1027  for (i = 0; i < count; i++) {
1028  int r = func(c, arg, i, 0);
1029  if (ret)
1030  ret[i] = r;
1031  }
1032  emms_c();
1033  return 0;
1034 }
1035 
1037  unsigned int fourcc)
1038 {
1039  while (tags->pix_fmt >= 0) {
1040  if (tags->fourcc == fourcc)
1041  return tags->pix_fmt;
1042  tags++;
1043  }
1044  return AV_PIX_FMT_NONE;
1045 }
1046 
1048 {
1049  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
1050  return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
1051 }
1052 
1054 {
1055  while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
1056  ++fmt;
1057  return fmt[0];
1058 }
1059 
1061  enum AVPixelFormat pix_fmt)
1062 {
1063  AVHWAccel *hwaccel = NULL;
1064 
1065  while ((hwaccel = av_hwaccel_next(hwaccel)))
1066  if (hwaccel->id == codec_id
1067  && hwaccel->pix_fmt == pix_fmt)
1068  return hwaccel;
1069  return NULL;
1070 }
1071 
1072 static int setup_hwaccel(AVCodecContext *avctx,
1073  const enum AVPixelFormat fmt,
1074  const char *name)
1075 {
1076  AVHWAccel *hwa = find_hwaccel(avctx->codec_id, fmt);
1077  int ret = 0;
1078 
1079  if (avctx->active_thread_type & FF_THREAD_FRAME) {
1080  av_log(avctx, AV_LOG_WARNING,
1081  "Hardware accelerated decoding with frame threading is known to be unstable and its use is discouraged.\n");
1082  }
1083 
1084  if (!hwa) {
1085  av_log(avctx, AV_LOG_ERROR,
1086  "Could not find an AVHWAccel for the pixel format: %s",
1087  name);
1088  return AVERROR(ENOENT);
1089  }
1090 
1093  av_log(avctx, AV_LOG_WARNING, "Ignoring experimental hwaccel: %s\n",
1094  hwa->name);
1095  return AVERROR_PATCHWELCOME;
1096  }
1097 
1098  if (hwa->priv_data_size) {
1100  if (!avctx->internal->hwaccel_priv_data)
1101  return AVERROR(ENOMEM);
1102  }
1103 
1104  if (hwa->init) {
1105  ret = hwa->init(avctx);
1106  if (ret < 0) {
1108  return ret;
1109  }
1110  }
1111 
1112  avctx->hwaccel = hwa;
1113 
1114  return 0;
1115 }
1116 
1118 {
1119  const AVPixFmtDescriptor *desc;
1120  enum AVPixelFormat *choices;
1121  enum AVPixelFormat ret;
1122  unsigned n = 0;
1123 
1124  while (fmt[n] != AV_PIX_FMT_NONE)
1125  ++n;
1126 
1127  av_assert0(n >= 1);
1128  avctx->sw_pix_fmt = fmt[n - 1];
1130 
1131  choices = av_malloc_array(n + 1, sizeof(*choices));
1132  if (!choices)
1133  return AV_PIX_FMT_NONE;
1134 
1135  memcpy(choices, fmt, (n + 1) * sizeof(*choices));
1136 
1137  for (;;) {
1138  if (avctx->hwaccel && avctx->hwaccel->uninit)
1139  avctx->hwaccel->uninit(avctx);
1141  avctx->hwaccel = NULL;
1142 
1143  av_buffer_unref(&avctx->hw_frames_ctx);
1144 
1145  ret = avctx->get_format(avctx, choices);
1146 
1147  desc = av_pix_fmt_desc_get(ret);
1148  if (!desc) {
1149  ret = AV_PIX_FMT_NONE;
1150  break;
1151  }
1152 
1153  if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
1154  break;
1155 #if FF_API_CAP_VDPAU
1157  break;
1158 #endif
1159 
1160  if (avctx->hw_frames_ctx) {
1161  AVHWFramesContext *hw_frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
1162  if (hw_frames_ctx->format != ret) {
1163  av_log(avctx, AV_LOG_ERROR, "Format returned from get_buffer() "
1164  "does not match the format of provided AVHWFramesContext\n");
1165  ret = AV_PIX_FMT_NONE;
1166  break;
1167  }
1168  }
1169 
1170  if (!setup_hwaccel(avctx, ret, desc->name))
1171  break;
1172 
1173  /* Remove failed hwaccel from choices */
1174  for (n = 0; choices[n] != ret; n++)
1175  av_assert0(choices[n] != AV_PIX_FMT_NONE);
1176 
1177  do
1178  choices[n] = choices[n + 1];
1179  while (choices[n++] != AV_PIX_FMT_NONE);
1180  }
1181 
1182  av_freep(&choices);
1183  return ret;
1184 }
1185 
1186 MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
1187 MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor)
1188 MAKE_ACCESSORS(AVCodecContext, codec, int, lowres)
1189 MAKE_ACCESSORS(AVCodecContext, codec, int, seek_preroll)
1190 MAKE_ACCESSORS(AVCodecContext, codec, uint16_t*, chroma_intra_matrix)
1191 
1192 unsigned av_codec_get_codec_properties(const AVCodecContext *codec)
1193 {
1194  return codec->properties;
1195 }
1196 
1198 {
1199  return codec->max_lowres;
1200 }
1201 
1204 }
1205 
1207 {
1208  memset(sub, 0, sizeof(*sub));
1209  sub->pts = AV_NOPTS_VALUE;
1210 }
1211 
1213 {
1214  int64_t bit_rate;
1215  int bits_per_sample;
1216 
1217  switch (ctx->codec_type) {
1218  case AVMEDIA_TYPE_VIDEO:
1219  case AVMEDIA_TYPE_DATA:
1220  case AVMEDIA_TYPE_SUBTITLE:
1222  bit_rate = ctx->bit_rate;
1223  break;
1224  case AVMEDIA_TYPE_AUDIO:
1225  bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1226  bit_rate = bits_per_sample ? ctx->sample_rate * (int64_t)ctx->channels * bits_per_sample : ctx->bit_rate;
1227  break;
1228  default:
1229  bit_rate = 0;
1230  break;
1231  }
1232  return bit_rate;
1233 }
1234 
1235 int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1236 {
1237  int ret = 0;
1238 
1239  ff_unlock_avcodec(codec);
1240 
1241  ret = avcodec_open2(avctx, codec, options);
1242 
1243  ff_lock_avcodec(avctx, codec);
1244  return ret;
1245 }
1246 
1247 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1248 {
1249  int ret = 0;
1250  AVDictionary *tmp = NULL;
1251  const AVPixFmtDescriptor *pixdesc;
1252 
1253  if (avcodec_is_open(avctx))
1254  return 0;
1255 
1256  if ((!codec && !avctx->codec)) {
1257  av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
1258  return AVERROR(EINVAL);
1259  }
1260  if ((codec && avctx->codec && codec != avctx->codec)) {
1261  av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
1262  "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
1263  return AVERROR(EINVAL);
1264  }
1265  if (!codec)
1266  codec = avctx->codec;
1267 
1268  if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
1269  return AVERROR(EINVAL);
1270 
1271  if (options)
1272  av_dict_copy(&tmp, *options, 0);
1273 
1274  ret = ff_lock_avcodec(avctx, codec);
1275  if (ret < 0)
1276  return ret;
1277 
1278  avctx->internal = av_mallocz(sizeof(AVCodecInternal));
1279  if (!avctx->internal) {
1280  ret = AVERROR(ENOMEM);
1281  goto end;
1282  }
1283 
1284  avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
1285  if (!avctx->internal->pool) {
1286  ret = AVERROR(ENOMEM);
1287  goto free_and_end;
1288  }
1289 
1290  avctx->internal->to_free = av_frame_alloc();
1291  if (!avctx->internal->to_free) {
1292  ret = AVERROR(ENOMEM);
1293  goto free_and_end;
1294  }
1295 
1296  avctx->internal->buffer_frame = av_frame_alloc();
1297  if (!avctx->internal->buffer_frame) {
1298  ret = AVERROR(ENOMEM);
1299  goto free_and_end;
1300  }
1301 
1302  avctx->internal->buffer_pkt = av_packet_alloc();
1303  if (!avctx->internal->buffer_pkt) {
1304  ret = AVERROR(ENOMEM);
1305  goto free_and_end;
1306  }
1307 
1308  if (codec->priv_data_size > 0) {
1309  if (!avctx->priv_data) {
1310  avctx->priv_data = av_mallocz(codec->priv_data_size);
1311  if (!avctx->priv_data) {
1312  ret = AVERROR(ENOMEM);
1313  goto end;
1314  }
1315  if (codec->priv_class) {
1316  *(const AVClass **)avctx->priv_data = codec->priv_class;
1318  }
1319  }
1320  if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
1321  goto free_and_end;
1322  } else {
1323  avctx->priv_data = NULL;
1324  }
1325  if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
1326  goto free_and_end;
1327 
1328  if (avctx->codec_whitelist && av_match_list(codec->name, avctx->codec_whitelist, ',') <= 0) {
1329  av_log(avctx, AV_LOG_ERROR, "Codec (%s) not on whitelist \'%s\'\n", codec->name, avctx->codec_whitelist);
1330  ret = AVERROR(EINVAL);
1331  goto free_and_end;
1332  }
1333 
1334  // only call ff_set_dimensions() for non H.264/VP6F/DXV codecs so as not to overwrite previously setup dimensions
1335  if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
1336  (avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F || avctx->codec_id == AV_CODEC_ID_DXV))) {
1337  if (avctx->coded_width && avctx->coded_height)
1338  ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
1339  else if (avctx->width && avctx->height)
1340  ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
1341  if (ret < 0)
1342  goto free_and_end;
1343  }
1344 
1345  if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
1346  && ( av_image_check_size2(avctx->coded_width, avctx->coded_height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx) < 0
1347  || av_image_check_size2(avctx->width, avctx->height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx) < 0)) {
1348  av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
1349  ff_set_dimensions(avctx, 0, 0);
1350  }
1351 
1352  if (avctx->width > 0 && avctx->height > 0) {
1353  if (av_image_check_sar(avctx->width, avctx->height,
1354  avctx->sample_aspect_ratio) < 0) {
1355  av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
1356  avctx->sample_aspect_ratio.num,
1357  avctx->sample_aspect_ratio.den);
1358  avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
1359  }
1360  }
1361 
1362  /* if the decoder init function was already called previously,
1363  * free the already allocated subtitle_header before overwriting it */
1364  if (av_codec_is_decoder(codec))
1365  av_freep(&avctx->subtitle_header);
1366 
1367  if (avctx->channels > FF_SANE_NB_CHANNELS) {
1368  ret = AVERROR(EINVAL);
1369  goto free_and_end;
1370  }
1371 
1372  avctx->codec = codec;
1373  if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
1374  avctx->codec_id == AV_CODEC_ID_NONE) {
1375  avctx->codec_type = codec->type;
1376  avctx->codec_id = codec->id;
1377  }
1378  if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
1379  && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
1380  av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
1381  ret = AVERROR(EINVAL);
1382  goto free_and_end;
1383  }
1384  avctx->frame_number = 0;
1386 
1387  if ((avctx->codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) &&
1389  const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
1390  AVCodec *codec2;
1391  av_log(avctx, AV_LOG_ERROR,
1392  "The %s '%s' is experimental but experimental codecs are not enabled, "
1393  "add '-strict %d' if you want to use it.\n",
1394  codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
1395  codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
1396  if (!(codec2->capabilities & AV_CODEC_CAP_EXPERIMENTAL))
1397  av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
1398  codec_string, codec2->name);
1399  ret = AVERROR_EXPERIMENTAL;
1400  goto free_and_end;
1401  }
1402 
1403  if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
1404  (!avctx->time_base.num || !avctx->time_base.den)) {
1405  avctx->time_base.num = 1;
1406  avctx->time_base.den = avctx->sample_rate;
1407  }
1408 
1409  if (!HAVE_THREADS)
1410  av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
1411 
1412  if (CONFIG_FRAME_THREAD_ENCODER && av_codec_is_encoder(avctx->codec)) {
1413  ff_unlock_avcodec(codec); //we will instantiate a few encoders thus kick the counter to prevent false detection of a problem
1414  ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
1415  ff_lock_avcodec(avctx, codec);
1416  if (ret < 0)
1417  goto free_and_end;
1418  }
1419 
1420  if (HAVE_THREADS
1422  ret = ff_thread_init(avctx);
1423  if (ret < 0) {
1424  goto free_and_end;
1425  }
1426  }
1427  if (!HAVE_THREADS && !(codec->capabilities & AV_CODEC_CAP_AUTO_THREADS))
1428  avctx->thread_count = 1;
1429 
1430  if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
1431  av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
1432  avctx->codec->max_lowres);
1433  avctx->lowres = avctx->codec->max_lowres;
1434  }
1435 
1436 #if FF_API_VISMV
1437  if (avctx->debug_mv)
1438  av_log(avctx, AV_LOG_WARNING, "The 'vismv' option is deprecated, "
1439  "see the codecview filter instead.\n");
1440 #endif
1441 
1442  if (av_codec_is_encoder(avctx->codec)) {
1443  int i;
1444 #if FF_API_CODED_FRAME
1446  avctx->coded_frame = av_frame_alloc();
1447  if (!avctx->coded_frame) {
1448  ret = AVERROR(ENOMEM);
1449  goto free_and_end;
1450  }
1452 #endif
1453 
1454  if (avctx->time_base.num <= 0 || avctx->time_base.den <= 0) {
1455  av_log(avctx, AV_LOG_ERROR, "The encoder timebase is not set.\n");
1456  ret = AVERROR(EINVAL);
1457  goto free_and_end;
1458  }
1459 
1460  if (avctx->codec->sample_fmts) {
1461  for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
1462  if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
1463  break;
1464  if (avctx->channels == 1 &&
1467  avctx->sample_fmt = avctx->codec->sample_fmts[i];
1468  break;
1469  }
1470  }
1471  if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
1472  char buf[128];
1473  snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt);
1474  av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n",
1475  (char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf));
1476  ret = AVERROR(EINVAL);
1477  goto free_and_end;
1478  }
1479  }
1480  if (avctx->codec->pix_fmts) {
1481  for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
1482  if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
1483  break;
1484  if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE
1485  && !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG)
1487  char buf[128];
1488  snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt);
1489  av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n",
1490  (char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf));
1491  ret = AVERROR(EINVAL);
1492  goto free_and_end;
1493  }
1494  if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ420P ||
1495  avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ411P ||
1496  avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ422P ||
1497  avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ440P ||
1498  avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ444P)
1499  avctx->color_range = AVCOL_RANGE_JPEG;
1500  }
1501  if (avctx->codec->supported_samplerates) {
1502  for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
1503  if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
1504  break;
1505  if (avctx->codec->supported_samplerates[i] == 0) {
1506  av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
1507  avctx->sample_rate);
1508  ret = AVERROR(EINVAL);
1509  goto free_and_end;
1510  }
1511  }
1512  if (avctx->sample_rate < 0) {
1513  av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
1514  avctx->sample_rate);
1515  ret = AVERROR(EINVAL);
1516  goto free_and_end;
1517  }
1518  if (avctx->codec->channel_layouts) {
1519  if (!avctx->channel_layout) {
1520  av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n");
1521  } else {
1522  for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
1523  if (avctx->channel_layout == avctx->codec->channel_layouts[i])
1524  break;
1525  if (avctx->codec->channel_layouts[i] == 0) {
1526  char buf[512];
1527  av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1528  av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf);
1529  ret = AVERROR(EINVAL);
1530  goto free_and_end;
1531  }
1532  }
1533  }
1534  if (avctx->channel_layout && avctx->channels) {
1535  int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1536  if (channels != avctx->channels) {
1537  char buf[512];
1538  av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1539  av_log(avctx, AV_LOG_ERROR,
1540  "Channel layout '%s' with %d channels does not match number of specified channels %d\n",
1541  buf, channels, avctx->channels);
1542  ret = AVERROR(EINVAL);
1543  goto free_and_end;
1544  }
1545  } else if (avctx->channel_layout) {
1547  }
1548  if (avctx->channels < 0) {
1549  av_log(avctx, AV_LOG_ERROR, "Specified number of channels %d is not supported\n",
1550  avctx->channels);
1551  ret = AVERROR(EINVAL);
1552  goto free_and_end;
1553  }
1554  if(avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1555  pixdesc = av_pix_fmt_desc_get(avctx->pix_fmt);
1556  if ( avctx->bits_per_raw_sample < 0
1557  || (avctx->bits_per_raw_sample > 8 && pixdesc->comp[0].depth <= 8)) {
1558  av_log(avctx, AV_LOG_WARNING, "Specified bit depth %d not possible with the specified pixel formats depth %d\n",
1559  avctx->bits_per_raw_sample, pixdesc->comp[0].depth);
1560  avctx->bits_per_raw_sample = pixdesc->comp[0].depth;
1561  }
1562  if (avctx->width <= 0 || avctx->height <= 0) {
1563  av_log(avctx, AV_LOG_ERROR, "dimensions not set\n");
1564  ret = AVERROR(EINVAL);
1565  goto free_and_end;
1566  }
1567  }
1568  if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
1569  && avctx->bit_rate>0 && avctx->bit_rate<1000) {
1570  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);
1571  }
1572 
1573  if (!avctx->rc_initial_buffer_occupancy)
1574  avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
1575 
1576  if (avctx->ticks_per_frame && avctx->time_base.num &&
1577  avctx->ticks_per_frame > INT_MAX / avctx->time_base.num) {
1578  av_log(avctx, AV_LOG_ERROR,
1579  "ticks_per_frame %d too large for the timebase %d/%d.",
1580  avctx->ticks_per_frame,
1581  avctx->time_base.num,
1582  avctx->time_base.den);
1583  goto free_and_end;
1584  }
1585 
1586  if (avctx->hw_frames_ctx) {
1587  AVHWFramesContext *frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
1588  if (frames_ctx->format != avctx->pix_fmt) {
1589  av_log(avctx, AV_LOG_ERROR,
1590  "Mismatching AVCodecContext.pix_fmt and AVHWFramesContext.format\n");
1591  ret = AVERROR(EINVAL);
1592  goto free_and_end;
1593  }
1594  }
1595  }
1596 
1598  avctx->pts_correction_num_faulty_dts = 0;
1599  avctx->pts_correction_last_pts =
1600  avctx->pts_correction_last_dts = INT64_MIN;
1601 
1602  if ( !CONFIG_GRAY && avctx->flags & AV_CODEC_FLAG_GRAY
1604  av_log(avctx, AV_LOG_WARNING,
1605  "gray decoding requested but not enabled at configuration time\n");
1606 
1607  if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
1608  || avctx->internal->frame_thread_encoder)) {
1609  ret = avctx->codec->init(avctx);
1610  if (ret < 0) {
1611  goto free_and_end;
1612  }
1613  }
1614 
1615  ret=0;
1616 
1617 #if FF_API_AUDIOENC_DELAY
1618  if (av_codec_is_encoder(avctx->codec))
1619  avctx->delay = avctx->initial_padding;
1620 #endif
1621 
1622  if (av_codec_is_decoder(avctx->codec)) {
1623  if (!avctx->bit_rate)
1624  avctx->bit_rate = get_bit_rate(avctx);
1625  /* validate channel layout from the decoder */
1626  if (avctx->channel_layout) {
1627  int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1628  if (!avctx->channels)
1629  avctx->channels = channels;
1630  else if (channels != avctx->channels) {
1631  char buf[512];
1632  av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1633  av_log(avctx, AV_LOG_WARNING,
1634  "Channel layout '%s' with %d channels does not match specified number of channels %d: "
1635  "ignoring specified channel layout\n",
1636  buf, channels, avctx->channels);
1637  avctx->channel_layout = 0;
1638  }
1639  }
1640  if (avctx->channels && avctx->channels < 0 ||
1641  avctx->channels > FF_SANE_NB_CHANNELS) {
1642  ret = AVERROR(EINVAL);
1643  goto free_and_end;
1644  }
1645  if (avctx->sub_charenc) {
1646  if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
1647  av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
1648  "supported with subtitles codecs\n");
1649  ret = AVERROR(EINVAL);
1650  goto free_and_end;
1651  } else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
1652  av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
1653  "subtitles character encoding will be ignored\n",
1654  avctx->codec_descriptor->name);
1656  } else {
1657  /* input character encoding is set for a text based subtitle
1658  * codec at this point */
1661 
1663 #if CONFIG_ICONV
1664  iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
1665  if (cd == (iconv_t)-1) {
1666  ret = AVERROR(errno);
1667  av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
1668  "with input character encoding \"%s\"\n", avctx->sub_charenc);
1669  goto free_and_end;
1670  }
1671  iconv_close(cd);
1672 #else
1673  av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
1674  "conversion needs a libavcodec built with iconv support "
1675  "for this codec\n");
1676  ret = AVERROR(ENOSYS);
1677  goto free_and_end;
1678 #endif
1679  }
1680  }
1681  }
1682 
1683 #if FF_API_AVCTX_TIMEBASE
1684  if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
1685  avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
1686 #endif
1687  }
1688  if (codec->priv_data_size > 0 && avctx->priv_data && codec->priv_class) {
1689  av_assert0(*(const AVClass **)avctx->priv_data == codec->priv_class);
1690  }
1691 
1692 end:
1693  ff_unlock_avcodec(codec);
1694  if (options) {
1696  *options = tmp;
1697  }
1698 
1699  return ret;
1700 free_and_end:
1701  if (avctx->codec &&
1702  (avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP))
1703  avctx->codec->close(avctx);
1704 
1705  if (codec->priv_class && codec->priv_data_size)
1706  av_opt_free(avctx->priv_data);
1707  av_opt_free(avctx);
1708 
1709 #if FF_API_CODED_FRAME
1711  av_frame_free(&avctx->coded_frame);
1713 #endif
1714 
1715  av_dict_free(&tmp);
1716  av_freep(&avctx->priv_data);
1717  if (avctx->internal) {
1718  av_packet_free(&avctx->internal->buffer_pkt);
1719  av_frame_free(&avctx->internal->buffer_frame);
1720  av_frame_free(&avctx->internal->to_free);
1721  av_freep(&avctx->internal->pool);
1722  }
1723  av_freep(&avctx->internal);
1724  avctx->codec = NULL;
1725  goto end;
1726 }
1727 
1728 int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
1729 {
1730  if (avpkt->size < 0) {
1731  av_log(avctx, AV_LOG_ERROR, "Invalid negative user packet size %d\n", avpkt->size);
1732  return AVERROR(EINVAL);
1733  }
1735  av_log(avctx, AV_LOG_ERROR, "Invalid minimum required packet size %"PRId64" (max allowed is %d)\n",
1736  size, INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE);
1737  return AVERROR(EINVAL);
1738  }
1739 
1740  if (avctx && 2*min_size < size) { // FIXME The factor needs to be finetuned
1741  av_assert0(!avpkt->data || avpkt->data != avctx->internal->byte_buffer);
1742  if (!avpkt->data || avpkt->size < size) {
1744  avpkt->data = avctx->internal->byte_buffer;
1745  avpkt->size = avctx->internal->byte_buffer_size;
1746  }
1747  }
1748 
1749  if (avpkt->data) {
1750  AVBufferRef *buf = avpkt->buf;
1751 
1752  if (avpkt->size < size) {
1753  av_log(avctx, AV_LOG_ERROR, "User packet is too small (%d < %"PRId64")\n", avpkt->size, size);
1754  return AVERROR(EINVAL);
1755  }
1756 
1757  av_init_packet(avpkt);
1758  avpkt->buf = buf;
1759  avpkt->size = size;
1760  return 0;
1761  } else {
1762  int ret = av_new_packet(avpkt, size);
1763  if (ret < 0)
1764  av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %"PRId64"\n", size);
1765  return ret;
1766  }
1767 }
1768 
1770 {
1771  return ff_alloc_packet2(NULL, avpkt, size, 0);
1772 }
1773 
1774 /**
1775  * Pad last frame with silence.
1776  */
1777 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1778 {
1779  AVFrame *frame = NULL;
1780  int ret;
1781 
1782  if (!(frame = av_frame_alloc()))
1783  return AVERROR(ENOMEM);
1784 
1785  frame->format = src->format;
1786  frame->channel_layout = src->channel_layout;
1788  frame->nb_samples = s->frame_size;
1789  ret = av_frame_get_buffer(frame, 32);
1790  if (ret < 0)
1791  goto fail;
1792 
1793  ret = av_frame_copy_props(frame, src);
1794  if (ret < 0)
1795  goto fail;
1796 
1797  if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1798  src->nb_samples, s->channels, s->sample_fmt)) < 0)
1799  goto fail;
1800  if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1801  frame->nb_samples - src->nb_samples,
1802  s->channels, s->sample_fmt)) < 0)
1803  goto fail;
1804 
1805  *dst = frame;
1806 
1807  return 0;
1808 
1809 fail:
1810  av_frame_free(&frame);
1811  return ret;
1812 }
1813 
1814 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1815  AVPacket *avpkt,
1816  const AVFrame *frame,
1817  int *got_packet_ptr)
1818 {
1819  AVFrame *extended_frame = NULL;
1820  AVFrame *padded_frame = NULL;
1821  int ret;
1822  AVPacket user_pkt = *avpkt;
1823  int needs_realloc = !user_pkt.data;
1824 
1825  *got_packet_ptr = 0;
1826 
1827  if (!avctx->codec->encode2) {
1828  av_log(avctx, AV_LOG_ERROR, "This encoder requires using the avcodec_send_frame() API.\n");
1829  return AVERROR(ENOSYS);
1830  }
1831 
1832  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY) && !frame) {
1833  av_packet_unref(avpkt);
1834  av_init_packet(avpkt);
1835  return 0;
1836  }
1837 
1838  /* ensure that extended_data is properly set */
1839  if (frame && !frame->extended_data) {
1840  if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1841  avctx->channels > AV_NUM_DATA_POINTERS) {
1842  av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1843  "with more than %d channels, but extended_data is not set.\n",
1845  return AVERROR(EINVAL);
1846  }
1847  av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1848 
1849  extended_frame = av_frame_alloc();
1850  if (!extended_frame)
1851  return AVERROR(ENOMEM);
1852 
1853  memcpy(extended_frame, frame, sizeof(AVFrame));
1854  extended_frame->extended_data = extended_frame->data;
1855  frame = extended_frame;
1856  }
1857 
1858  /* extract audio service type metadata */
1859  if (frame) {
1861  if (sd && sd->size >= sizeof(enum AVAudioServiceType))
1862  avctx->audio_service_type = *(enum AVAudioServiceType*)sd->data;
1863  }
1864 
1865  /* check for valid frame size */
1866  if (frame) {
1868  if (frame->nb_samples > avctx->frame_size) {
1869  av_log(avctx, AV_LOG_ERROR, "more samples than frame size (avcodec_encode_audio2)\n");
1870  ret = AVERROR(EINVAL);
1871  goto end;
1872  }
1873  } else if (!(avctx->codec->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1874  if (frame->nb_samples < avctx->frame_size &&
1875  !avctx->internal->last_audio_frame) {
1876  ret = pad_last_frame(avctx, &padded_frame, frame);
1877  if (ret < 0)
1878  goto end;
1879 
1880  frame = padded_frame;
1881  avctx->internal->last_audio_frame = 1;
1882  }
1883 
1884  if (frame->nb_samples != avctx->frame_size) {
1885  av_log(avctx, AV_LOG_ERROR, "nb_samples (%d) != frame_size (%d) (avcodec_encode_audio2)\n", frame->nb_samples, avctx->frame_size);
1886  ret = AVERROR(EINVAL);
1887  goto end;
1888  }
1889  }
1890  }
1891 
1892  av_assert0(avctx->codec->encode2);
1893 
1894  ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1895  if (!ret) {
1896  if (*got_packet_ptr) {
1897  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY)) {
1898  if (avpkt->pts == AV_NOPTS_VALUE)
1899  avpkt->pts = frame->pts;
1900  if (!avpkt->duration)
1901  avpkt->duration = ff_samples_to_time_base(avctx,
1902  frame->nb_samples);
1903  }
1904  avpkt->dts = avpkt->pts;
1905  } else {
1906  avpkt->size = 0;
1907  }
1908  }
1909  if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1910  needs_realloc = 0;
1911  if (user_pkt.data) {
1912  if (user_pkt.size >= avpkt->size) {
1913  memcpy(user_pkt.data, avpkt->data, avpkt->size);
1914  } else {
1915  av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1916  avpkt->size = user_pkt.size;
1917  ret = -1;
1918  }
1919  avpkt->buf = user_pkt.buf;
1920  avpkt->data = user_pkt.data;
1921  } else {
1922  if (av_dup_packet(avpkt) < 0) {
1923  ret = AVERROR(ENOMEM);
1924  }
1925  }
1926  }
1927 
1928  if (!ret) {
1929  if (needs_realloc && avpkt->data) {
1930  ret = av_buffer_realloc(&avpkt->buf, avpkt->size + AV_INPUT_BUFFER_PADDING_SIZE);
1931  if (ret >= 0)
1932  avpkt->data = avpkt->buf->data;
1933  }
1934 
1935  avctx->frame_number++;
1936  }
1937 
1938  if (ret < 0 || !*got_packet_ptr) {
1939  av_packet_unref(avpkt);
1940  av_init_packet(avpkt);
1941  goto end;
1942  }
1943 
1944  /* NOTE: if we add any audio encoders which output non-keyframe packets,
1945  * this needs to be moved to the encoders, but for now we can do it
1946  * here to simplify things */
1947  avpkt->flags |= AV_PKT_FLAG_KEY;
1948 
1949 end:
1950  av_frame_free(&padded_frame);
1951  av_free(extended_frame);
1952 
1953 #if FF_API_AUDIOENC_DELAY
1954  avctx->delay = avctx->initial_padding;
1955 #endif
1956 
1957  return ret;
1958 }
1959 
1960 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
1961  AVPacket *avpkt,
1962  const AVFrame *frame,
1963  int *got_packet_ptr)
1964 {
1965  int ret;
1966  AVPacket user_pkt = *avpkt;
1967  int needs_realloc = !user_pkt.data;
1968 
1969  *got_packet_ptr = 0;
1970 
1971  if (!avctx->codec->encode2) {
1972  av_log(avctx, AV_LOG_ERROR, "This encoder requires using the avcodec_send_frame() API.\n");
1973  return AVERROR(ENOSYS);
1974  }
1975 
1976  if(CONFIG_FRAME_THREAD_ENCODER &&
1978  return ff_thread_video_encode_frame(avctx, avpkt, frame, got_packet_ptr);
1979 
1980  if ((avctx->flags&AV_CODEC_FLAG_PASS1) && avctx->stats_out)
1981  avctx->stats_out[0] = '\0';
1982 
1983  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY) && !frame) {
1984  av_packet_unref(avpkt);
1985  av_init_packet(avpkt);
1986  avpkt->size = 0;
1987  return 0;
1988  }
1989 
1990  if (av_image_check_size2(avctx->width, avctx->height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx))
1991  return AVERROR(EINVAL);
1992 
1993  if (frame && frame->format == AV_PIX_FMT_NONE)
1994  av_log(avctx, AV_LOG_WARNING, "AVFrame.format is not set\n");
1995  if (frame && (frame->width == 0 || frame->height == 0))
1996  av_log(avctx, AV_LOG_WARNING, "AVFrame.width or height is not set\n");
1997 
1998  av_assert0(avctx->codec->encode2);
1999 
2000  ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
2001  av_assert0(ret <= 0);
2002 
2003  emms_c();
2004 
2005  if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
2006  needs_realloc = 0;
2007  if (user_pkt.data) {
2008  if (user_pkt.size >= avpkt->size) {
2009  memcpy(user_pkt.data, avpkt->data, avpkt->size);
2010  } else {
2011  av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
2012  avpkt->size = user_pkt.size;
2013  ret = -1;
2014  }
2015  avpkt->buf = user_pkt.buf;
2016  avpkt->data = user_pkt.data;
2017  } else {
2018  if (av_dup_packet(avpkt) < 0) {
2019  ret = AVERROR(ENOMEM);
2020  }
2021  }
2022  }
2023 
2024  if (!ret) {
2025  if (!*got_packet_ptr)
2026  avpkt->size = 0;
2027  else if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
2028  avpkt->pts = avpkt->dts = frame->pts;
2029 
2030  if (needs_realloc && avpkt->data) {
2031  ret = av_buffer_realloc(&avpkt->buf, avpkt->size + AV_INPUT_BUFFER_PADDING_SIZE);
2032  if (ret >= 0)
2033  avpkt->data = avpkt->buf->data;
2034  }
2035 
2036  avctx->frame_number++;
2037  }
2038 
2039  if (ret < 0 || !*got_packet_ptr)
2040  av_packet_unref(avpkt);
2041 
2042  return ret;
2043 }
2044 
2046  const AVSubtitle *sub)
2047 {
2048  int ret;
2049  if (sub->start_display_time) {
2050  av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
2051  return -1;
2052  }
2053 
2054  ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
2055  avctx->frame_number++;
2056  return ret;
2057 }
2058 
2059 /**
2060  * Attempt to guess proper monotonic timestamps for decoded video frames
2061  * which might have incorrect times. Input timestamps may wrap around, in
2062  * which case the output will as well.
2063  *
2064  * @param pts the pts field of the decoded AVPacket, as passed through
2065  * AVFrame.pts
2066  * @param dts the dts field of the decoded AVPacket
2067  * @return one of the input values, may be AV_NOPTS_VALUE
2068  */
2070  int64_t reordered_pts, int64_t dts)
2071 {
2072  int64_t pts = AV_NOPTS_VALUE;
2073 
2074  if (dts != AV_NOPTS_VALUE) {
2076  ctx->pts_correction_last_dts = dts;
2077  } else if (reordered_pts != AV_NOPTS_VALUE)
2078  ctx->pts_correction_last_dts = reordered_pts;
2079 
2080  if (reordered_pts != AV_NOPTS_VALUE) {
2081  ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
2082  ctx->pts_correction_last_pts = reordered_pts;
2083  } else if(dts != AV_NOPTS_VALUE)
2084  ctx->pts_correction_last_pts = dts;
2085 
2087  && reordered_pts != AV_NOPTS_VALUE)
2088  pts = reordered_pts;
2089  else
2090  pts = dts;
2091 
2092  return pts;
2093 }
2094 
2095 static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
2096 {
2097  int size = 0, ret;
2098  const uint8_t *data;
2099  uint32_t flags;
2100  int64_t val;
2101 
2102  data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
2103  if (!data)
2104  return 0;
2105 
2106  if (!(avctx->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE)) {
2107  av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
2108  "changes, but PARAM_CHANGE side data was sent to it.\n");
2109  ret = AVERROR(EINVAL);
2110  goto fail2;
2111  }
2112 
2113  if (size < 4)
2114  goto fail;
2115 
2116  flags = bytestream_get_le32(&data);
2117  size -= 4;
2118 
2120  if (size < 4)
2121  goto fail;
2122  val = bytestream_get_le32(&data);
2123  if (val <= 0 || val > INT_MAX) {
2124  av_log(avctx, AV_LOG_ERROR, "Invalid channel count");
2125  ret = AVERROR_INVALIDDATA;
2126  goto fail2;
2127  }
2128  avctx->channels = val;
2129  size -= 4;
2130  }
2132  if (size < 8)
2133  goto fail;
2134  avctx->channel_layout = bytestream_get_le64(&data);
2135  size -= 8;
2136  }
2138  if (size < 4)
2139  goto fail;
2140  val = bytestream_get_le32(&data);
2141  if (val <= 0 || val > INT_MAX) {
2142  av_log(avctx, AV_LOG_ERROR, "Invalid sample rate");
2143  ret = AVERROR_INVALIDDATA;
2144  goto fail2;
2145  }
2146  avctx->sample_rate = val;
2147  size -= 4;
2148  }
2150  if (size < 8)
2151  goto fail;
2152  avctx->width = bytestream_get_le32(&data);
2153  avctx->height = bytestream_get_le32(&data);
2154  size -= 8;
2155  ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
2156  if (ret < 0)
2157  goto fail2;
2158  }
2159 
2160  return 0;
2161 fail:
2162  av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
2163  ret = AVERROR_INVALIDDATA;
2164 fail2:
2165  if (ret < 0) {
2166  av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
2167  if (avctx->err_recognition & AV_EF_EXPLODE)
2168  return ret;
2169  }
2170  return 0;
2171 }
2172 
2174 {
2175  int ret;
2176 
2177  /* move the original frame to our backup */
2178  av_frame_unref(avci->to_free);
2179  av_frame_move_ref(avci->to_free, frame);
2180 
2181  /* now copy everything except the AVBufferRefs back
2182  * note that we make a COPY of the side data, so calling av_frame_free() on
2183  * the caller's frame will work properly */
2184  ret = av_frame_copy_props(frame, avci->to_free);
2185  if (ret < 0)
2186  return ret;
2187 
2188  memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
2189  memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
2190  if (avci->to_free->extended_data != avci->to_free->data) {
2191  int planes = av_frame_get_channels(avci->to_free);
2192  int size = planes * sizeof(*frame->extended_data);
2193 
2194  if (!size) {
2195  av_frame_unref(frame);
2196  return AVERROR_BUG;
2197  }
2198 
2199  frame->extended_data = av_malloc(size);
2200  if (!frame->extended_data) {
2201  av_frame_unref(frame);
2202  return AVERROR(ENOMEM);
2203  }
2204  memcpy(frame->extended_data, avci->to_free->extended_data,
2205  size);
2206  } else
2207  frame->extended_data = frame->data;
2208 
2209  frame->format = avci->to_free->format;
2210  frame->width = avci->to_free->width;
2211  frame->height = avci->to_free->height;
2212  frame->channel_layout = avci->to_free->channel_layout;
2213  frame->nb_samples = avci->to_free->nb_samples;
2215 
2216  return 0;
2217 }
2218 
2219 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
2220  int *got_picture_ptr,
2221  const AVPacket *avpkt)
2222 {
2223  AVCodecInternal *avci = avctx->internal;
2224  int ret;
2225  // copy to ensure we do not change avpkt
2226  AVPacket tmp = *avpkt;
2227 
2228  if (!avctx->codec)
2229  return AVERROR(EINVAL);
2230  if (avctx->codec->type != AVMEDIA_TYPE_VIDEO) {
2231  av_log(avctx, AV_LOG_ERROR, "Invalid media type for video\n");
2232  return AVERROR(EINVAL);
2233  }
2234 
2235  if (!avctx->codec->decode) {
2236  av_log(avctx, AV_LOG_ERROR, "This decoder requires using the avcodec_send_packet() API.\n");
2237  return AVERROR(ENOSYS);
2238  }
2239 
2240  *got_picture_ptr = 0;
2241  if ((avctx->coded_width || avctx->coded_height) && av_image_check_size2(avctx->coded_width, avctx->coded_height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx))
2242  return AVERROR(EINVAL);
2243 
2244  avctx->internal->pkt = avpkt;
2245  ret = apply_param_change(avctx, avpkt);
2246  if (ret < 0)
2247  return ret;
2248 
2249  av_frame_unref(picture);
2250 
2251  if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size ||
2252  (avctx->active_thread_type & FF_THREAD_FRAME)) {
2253  int did_split = av_packet_split_side_data(&tmp);
2254  ret = apply_param_change(avctx, &tmp);
2255  if (ret < 0)
2256  goto fail;
2257 
2258  avctx->internal->pkt = &tmp;
2259  if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2260  ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
2261  &tmp);
2262  else {
2263  ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
2264  &tmp);
2266  picture->pkt_dts = avpkt->dts;
2267 
2268  if(!avctx->has_b_frames){
2269  av_frame_set_pkt_pos(picture, avpkt->pos);
2270  }
2271  //FIXME these should be under if(!avctx->has_b_frames)
2272  /* get_buffer is supposed to set frame parameters */
2273  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DR1)) {
2274  if (!picture->sample_aspect_ratio.num) picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
2275  if (!picture->width) picture->width = avctx->width;
2276  if (!picture->height) picture->height = avctx->height;
2277  if (picture->format == AV_PIX_FMT_NONE) picture->format = avctx->pix_fmt;
2278  }
2279  }
2280 
2281 fail:
2282  emms_c(); //needed to avoid an emms_c() call before every return;
2283 
2284  avctx->internal->pkt = NULL;
2285  if (did_split) {
2287  if(ret == tmp.size)
2288  ret = avpkt->size;
2289  }
2290  if (picture->flags & AV_FRAME_FLAG_DISCARD) {
2291  *got_picture_ptr = 0;
2292  }
2293  if (*got_picture_ptr) {
2294  if (!avctx->refcounted_frames) {
2295  int err = unrefcount_frame(avci, picture);
2296  if (err < 0)
2297  return err;
2298  }
2299 
2300  avctx->frame_number++;
2302  guess_correct_pts(avctx,
2303  picture->pts,
2304  picture->pkt_dts));
2305  } else
2306  av_frame_unref(picture);
2307  } else
2308  ret = 0;
2309 
2310  /* many decoders assign whole AVFrames, thus overwriting extended_data;
2311  * make sure it's set correctly */
2312  av_assert0(!picture->extended_data || picture->extended_data == picture->data);
2313 
2314 #if FF_API_AVCTX_TIMEBASE
2315  if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
2316  avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
2317 #endif
2318 
2319  return ret;
2320 }
2321 
2322 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
2323  AVFrame *frame,
2324  int *got_frame_ptr,
2325  const AVPacket *avpkt)
2326 {
2327  AVCodecInternal *avci = avctx->internal;
2328  int ret = 0;
2329 
2330  *got_frame_ptr = 0;
2331 
2332  if (!avctx->codec)
2333  return AVERROR(EINVAL);
2334 
2335  if (!avctx->codec->decode) {
2336  av_log(avctx, AV_LOG_ERROR, "This decoder requires using the avcodec_send_packet() API.\n");
2337  return AVERROR(ENOSYS);
2338  }
2339 
2340  if (!avpkt->data && avpkt->size) {
2341  av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2342  return AVERROR(EINVAL);
2343  }
2344  if (avctx->codec->type != AVMEDIA_TYPE_AUDIO) {
2345  av_log(avctx, AV_LOG_ERROR, "Invalid media type for audio\n");
2346  return AVERROR(EINVAL);
2347  }
2348 
2349  av_frame_unref(frame);
2350 
2351  if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
2352  uint8_t *side;
2353  int side_size;
2354  uint32_t discard_padding = 0;
2355  uint8_t skip_reason = 0;
2356  uint8_t discard_reason = 0;
2357  // copy to ensure we do not change avpkt
2358  AVPacket tmp = *avpkt;
2359  int did_split = av_packet_split_side_data(&tmp);
2360  ret = apply_param_change(avctx, &tmp);
2361  if (ret < 0)
2362  goto fail;
2363 
2364  avctx->internal->pkt = &tmp;
2365  if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2366  ret = ff_thread_decode_frame(avctx, frame, got_frame_ptr, &tmp);
2367  else {
2368  ret = avctx->codec->decode(avctx, frame, got_frame_ptr, &tmp);
2369  av_assert0(ret <= tmp.size);
2370  frame->pkt_dts = avpkt->dts;
2371  }
2372  if (ret >= 0 && *got_frame_ptr) {
2373  avctx->frame_number++;
2375  guess_correct_pts(avctx,
2376  frame->pts,
2377  frame->pkt_dts));
2378  if (frame->format == AV_SAMPLE_FMT_NONE)
2379  frame->format = avctx->sample_fmt;
2380  if (!frame->channel_layout)
2381  frame->channel_layout = avctx->channel_layout;
2382  if (!av_frame_get_channels(frame))
2383  av_frame_set_channels(frame, avctx->channels);
2384  if (!frame->sample_rate)
2385  frame->sample_rate = avctx->sample_rate;
2386  }
2387 
2388  side= av_packet_get_side_data(avctx->internal->pkt, AV_PKT_DATA_SKIP_SAMPLES, &side_size);
2389  if(side && side_size>=10) {
2390  avctx->internal->skip_samples = AV_RL32(side);
2391  discard_padding = AV_RL32(side + 4);
2392  av_log(avctx, AV_LOG_DEBUG, "skip %d / discard %d samples due to side data\n",
2393  avctx->internal->skip_samples, (int)discard_padding);
2394  skip_reason = AV_RL8(side + 8);
2395  discard_reason = AV_RL8(side + 9);
2396  }
2397 
2398  if ((frame->flags & AV_FRAME_FLAG_DISCARD) && *got_frame_ptr &&
2399  !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
2400  avctx->internal->skip_samples = FFMAX(0, avctx->internal->skip_samples - frame->nb_samples);
2401  *got_frame_ptr = 0;
2402  }
2403 
2404  if (avctx->internal->skip_samples > 0 && *got_frame_ptr &&
2405  !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
2406  if(frame->nb_samples <= avctx->internal->skip_samples){
2407  *got_frame_ptr = 0;
2408  avctx->internal->skip_samples -= frame->nb_samples;
2409  av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
2410  avctx->internal->skip_samples);
2411  } else {
2413  frame->nb_samples - avctx->internal->skip_samples, avctx->channels, frame->format);
2414  if(avctx->pkt_timebase.num && avctx->sample_rate) {
2415  int64_t diff_ts = av_rescale_q(avctx->internal->skip_samples,
2416  (AVRational){1, avctx->sample_rate},
2417  avctx->pkt_timebase);
2418  if(frame->pts!=AV_NOPTS_VALUE)
2419  frame->pts += diff_ts;
2420 #if FF_API_PKT_PTS
2422  if(frame->pkt_pts!=AV_NOPTS_VALUE)
2423  frame->pkt_pts += diff_ts;
2425 #endif
2426  if(frame->pkt_dts!=AV_NOPTS_VALUE)
2427  frame->pkt_dts += diff_ts;
2428  if (av_frame_get_pkt_duration(frame) >= diff_ts)
2429  av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2430  } else {
2431  av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
2432  }
2433  av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
2434  avctx->internal->skip_samples, frame->nb_samples);
2435  frame->nb_samples -= avctx->internal->skip_samples;
2436  avctx->internal->skip_samples = 0;
2437  }
2438  }
2439 
2440  if (discard_padding > 0 && discard_padding <= frame->nb_samples && *got_frame_ptr &&
2441  !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
2442  if (discard_padding == frame->nb_samples) {
2443  *got_frame_ptr = 0;
2444  } else {
2445  if(avctx->pkt_timebase.num && avctx->sample_rate) {
2446  int64_t diff_ts = av_rescale_q(frame->nb_samples - discard_padding,
2447  (AVRational){1, avctx->sample_rate},
2448  avctx->pkt_timebase);
2449  av_frame_set_pkt_duration(frame, diff_ts);
2450  } else {
2451  av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for discarded samples.\n");
2452  }
2453  av_log(avctx, AV_LOG_DEBUG, "discard %d/%d samples\n",
2454  (int)discard_padding, frame->nb_samples);
2455  frame->nb_samples -= discard_padding;
2456  }
2457  }
2458 
2459  if ((avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL) && *got_frame_ptr) {
2461  if (fside) {
2462  AV_WL32(fside->data, avctx->internal->skip_samples);
2463  AV_WL32(fside->data + 4, discard_padding);
2464  AV_WL8(fside->data + 8, skip_reason);
2465  AV_WL8(fside->data + 9, discard_reason);
2466  avctx->internal->skip_samples = 0;
2467  }
2468  }
2469 fail:
2470  avctx->internal->pkt = NULL;
2471  if (did_split) {
2473  if(ret == tmp.size)
2474  ret = avpkt->size;
2475  }
2476 
2477  if (ret >= 0 && *got_frame_ptr) {
2478  if (!avctx->refcounted_frames) {
2479  int err = unrefcount_frame(avci, frame);
2480  if (err < 0)
2481  return err;
2482  }
2483  } else
2485  }
2486 
2487  av_assert0(ret <= avpkt->size);
2488 
2489  if (!avci->showed_multi_packet_warning &&
2490  ret >= 0 && ret != avpkt->size && !(avctx->codec->capabilities & AV_CODEC_CAP_SUBFRAMES)) {
2491  av_log(avctx, AV_LOG_WARNING, "Multiple frames in a packet.\n");
2492  avci->showed_multi_packet_warning = 1;
2493  }
2494 
2495  return ret;
2496 }
2497 
2498 #define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
2500  AVPacket *outpkt, const AVPacket *inpkt)
2501 {
2502 #if CONFIG_ICONV
2503  iconv_t cd = (iconv_t)-1;
2504  int ret = 0;
2505  char *inb, *outb;
2506  size_t inl, outl;
2507  AVPacket tmp;
2508 #endif
2509 
2510  if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER || inpkt->size == 0)
2511  return 0;
2512 
2513 #if CONFIG_ICONV
2514  cd = iconv_open("UTF-8", avctx->sub_charenc);
2515  av_assert0(cd != (iconv_t)-1);
2516 
2517  inb = inpkt->data;
2518  inl = inpkt->size;
2519 
2520  if (inl >= INT_MAX / UTF8_MAX_BYTES - AV_INPUT_BUFFER_PADDING_SIZE) {
2521  av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n");
2522  ret = AVERROR(ENOMEM);
2523  goto end;
2524  }
2525 
2526  ret = av_new_packet(&tmp, inl * UTF8_MAX_BYTES);
2527  if (ret < 0)
2528  goto end;
2529  outpkt->buf = tmp.buf;
2530  outpkt->data = tmp.data;
2531  outpkt->size = tmp.size;
2532  outb = outpkt->data;
2533  outl = outpkt->size;
2534 
2535  if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
2536  iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
2537  outl >= outpkt->size || inl != 0) {
2538  ret = FFMIN(AVERROR(errno), -1);
2539  av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
2540  "from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
2541  av_packet_unref(&tmp);
2542  goto end;
2543  }
2544  outpkt->size -= outl;
2545  memset(outpkt->data + outpkt->size, 0, outl);
2546 
2547 end:
2548  if (cd != (iconv_t)-1)
2549  iconv_close(cd);
2550  return ret;
2551 #else
2552  av_log(avctx, AV_LOG_ERROR, "requesting subtitles recoding without iconv");
2553  return AVERROR(EINVAL);
2554 #endif
2555 }
2556 
2557 static int utf8_check(const uint8_t *str)
2558 {
2559  const uint8_t *byte;
2560  uint32_t codepoint, min;
2561 
2562  while (*str) {
2563  byte = str;
2564  GET_UTF8(codepoint, *(byte++), return 0;);
2565  min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
2566  1 << (5 * (byte - str) - 4);
2567  if (codepoint < min || codepoint >= 0x110000 ||
2568  codepoint == 0xFFFE /* BOM */ ||
2569  codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
2570  return 0;
2571  str = byte;
2572  }
2573  return 1;
2574 }
2575 
2576 #if FF_API_ASS_TIMING
2577 static void insert_ts(AVBPrint *buf, int ts)
2578 {
2579  if (ts == -1) {
2580  av_bprintf(buf, "9:59:59.99,");
2581  } else {
2582  int h, m, s;
2583 
2584  h = ts/360000; ts -= 360000*h;
2585  m = ts/ 6000; ts -= 6000*m;
2586  s = ts/ 100; ts -= 100*s;
2587  av_bprintf(buf, "%d:%02d:%02d.%02d,", h, m, s, ts);
2588  }
2589 }
2590 
2592 {
2593  int i;
2594  AVBPrint buf;
2595 
2597 
2598  for (i = 0; i < sub->num_rects; i++) {
2599  char *final_dialog;
2600  const char *dialog;
2601  AVSubtitleRect *rect = sub->rects[i];
2602  int ts_start, ts_duration = -1;
2603  long int layer;
2604 
2605  if (rect->type != SUBTITLE_ASS || !strncmp(rect->ass, "Dialogue: ", 10))
2606  continue;
2607 
2608  av_bprint_clear(&buf);
2609 
2610  /* skip ReadOrder */
2611  dialog = strchr(rect->ass, ',');
2612  if (!dialog)
2613  continue;
2614  dialog++;
2615 
2616  /* extract Layer or Marked */
2617  layer = strtol(dialog, (char**)&dialog, 10);
2618  if (*dialog != ',')
2619  continue;
2620  dialog++;
2621 
2622  /* rescale timing to ASS time base (ms) */
2623  ts_start = av_rescale_q(pkt->pts, tb, av_make_q(1, 100));
2624  if (pkt->duration != -1)
2625  ts_duration = av_rescale_q(pkt->duration, tb, av_make_q(1, 100));
2626  sub->end_display_time = FFMAX(sub->end_display_time, 10 * ts_duration);
2627 
2628  /* construct ASS (standalone file form with timestamps) string */
2629  av_bprintf(&buf, "Dialogue: %ld,", layer);
2630  insert_ts(&buf, ts_start);
2631  insert_ts(&buf, ts_duration == -1 ? -1 : ts_start + ts_duration);
2632  av_bprintf(&buf, "%s\r\n", dialog);
2633 
2634  final_dialog = av_strdup(buf.str);
2635  if (!av_bprint_is_complete(&buf) || !final_dialog) {
2636  av_freep(&final_dialog);
2637  av_bprint_finalize(&buf, NULL);
2638  return AVERROR(ENOMEM);
2639  }
2640  av_freep(&rect->ass);
2641  rect->ass = final_dialog;
2642  }
2643 
2644  av_bprint_finalize(&buf, NULL);
2645  return 0;
2646 }
2647 #endif
2648 
2650  int *got_sub_ptr,
2651  AVPacket *avpkt)
2652 {
2653  int i, ret = 0;
2654 
2655  if (!avpkt->data && avpkt->size) {
2656  av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2657  return AVERROR(EINVAL);
2658  }
2659  if (!avctx->codec)
2660  return AVERROR(EINVAL);
2661  if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
2662  av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
2663  return AVERROR(EINVAL);
2664  }
2665 
2666  *got_sub_ptr = 0;
2667  get_subtitle_defaults(sub);
2668 
2669  if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size) {
2670  AVPacket pkt_recoded;
2671  AVPacket tmp = *avpkt;
2672  int did_split = av_packet_split_side_data(&tmp);
2673  //apply_param_change(avctx, &tmp);
2674 
2675  if (did_split) {
2676  /* FFMIN() prevents overflow in case the packet wasn't allocated with
2677  * proper padding.
2678  * If the side data is smaller than the buffer padding size, the
2679  * remaining bytes should have already been filled with zeros by the
2680  * original packet allocation anyway. */
2681  memset(tmp.data + tmp.size, 0,
2682  FFMIN(avpkt->size - tmp.size, AV_INPUT_BUFFER_PADDING_SIZE));
2683  }
2684 
2685  pkt_recoded = tmp;
2686  ret = recode_subtitle(avctx, &pkt_recoded, &tmp);
2687  if (ret < 0) {
2688  *got_sub_ptr = 0;
2689  } else {
2690  avctx->internal->pkt = &pkt_recoded;
2691 
2692  if (avctx->pkt_timebase.num && avpkt->pts != AV_NOPTS_VALUE)
2693  sub->pts = av_rescale_q(avpkt->pts,
2694  avctx->pkt_timebase, AV_TIME_BASE_Q);
2695  ret = avctx->codec->decode(avctx, sub, got_sub_ptr, &pkt_recoded);
2696  av_assert1((ret >= 0) >= !!*got_sub_ptr &&
2697  !!*got_sub_ptr >= !!sub->num_rects);
2698 
2699 #if FF_API_ASS_TIMING
2701  && *got_sub_ptr && sub->num_rects) {
2702  const AVRational tb = avctx->pkt_timebase.num ? avctx->pkt_timebase
2703  : avctx->time_base;
2704  int err = convert_sub_to_old_ass_form(sub, avpkt, tb);
2705  if (err < 0)
2706  ret = err;
2707  }
2708 #endif
2709 
2710  if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
2711  avctx->pkt_timebase.num) {
2712  AVRational ms = { 1, 1000 };
2713  sub->end_display_time = av_rescale_q(avpkt->duration,
2714  avctx->pkt_timebase, ms);
2715  }
2716 
2718  sub->format = 0;
2719  else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB)
2720  sub->format = 1;
2721 
2722  for (i = 0; i < sub->num_rects; i++) {
2723  if (sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
2724  av_log(avctx, AV_LOG_ERROR,
2725  "Invalid UTF-8 in decoded subtitles text; "
2726  "maybe missing -sub_charenc option\n");
2727  avsubtitle_free(sub);
2728  ret = AVERROR_INVALIDDATA;
2729  break;
2730  }
2731  }
2732 
2733  if (tmp.data != pkt_recoded.data) { // did we recode?
2734  /* prevent from destroying side data from original packet */
2735  pkt_recoded.side_data = NULL;
2736  pkt_recoded.side_data_elems = 0;
2737 
2738  av_packet_unref(&pkt_recoded);
2739  }
2740  avctx->internal->pkt = NULL;
2741  }
2742 
2743  if (did_split) {
2745  if(ret == tmp.size)
2746  ret = avpkt->size;
2747  }
2748 
2749  if (*got_sub_ptr)
2750  avctx->frame_number++;
2751  }
2752 
2753  return ret;
2754 }
2755 
2757 {
2758  int i;
2759 
2760  for (i = 0; i < sub->num_rects; i++) {
2761  av_freep(&sub->rects[i]->data[0]);
2762  av_freep(&sub->rects[i]->data[1]);
2763  av_freep(&sub->rects[i]->data[2]);
2764  av_freep(&sub->rects[i]->data[3]);
2765  av_freep(&sub->rects[i]->text);
2766  av_freep(&sub->rects[i]->ass);
2767  av_freep(&sub->rects[i]);
2768  }
2769 
2770  av_freep(&sub->rects);
2771 
2772  memset(sub, 0, sizeof(AVSubtitle));
2773 }
2774 
2775 static int do_decode(AVCodecContext *avctx, AVPacket *pkt)
2776 {
2777  int got_frame;
2778  int ret;
2779 
2780  av_assert0(!avctx->internal->buffer_frame->buf[0]);
2781 
2782  if (!pkt)
2783  pkt = avctx->internal->buffer_pkt;
2784 
2785  // This is the lesser evil. The field is for compatibility with legacy users
2786  // of the legacy API, and users using the new API should not be forced to
2787  // even know about this field.
2788  avctx->refcounted_frames = 1;
2789 
2790  // Some codecs (at least wma lossless) will crash when feeding drain packets
2791  // after EOF was signaled.
2792  if (avctx->internal->draining_done)
2793  return AVERROR_EOF;
2794 
2795  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
2796  ret = avcodec_decode_video2(avctx, avctx->internal->buffer_frame,
2797  &got_frame, pkt);
2798  if (ret >= 0 && !(avctx->flags & AV_CODEC_FLAG_TRUNCATED))
2799  ret = pkt->size;
2800  } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2801  ret = avcodec_decode_audio4(avctx, avctx->internal->buffer_frame,
2802  &got_frame, pkt);
2803  } else {
2804  ret = AVERROR(EINVAL);
2805  }
2806 
2807  if (ret == AVERROR(EAGAIN))
2808  ret = pkt->size;
2809 
2810  if (ret < 0)
2811  return ret;
2812 
2813  if (avctx->internal->draining && !got_frame)
2814  avctx->internal->draining_done = 1;
2815 
2816  if (ret >= pkt->size) {
2818  } else {
2819  int consumed = ret;
2820 
2821  if (pkt != avctx->internal->buffer_pkt) {
2823  if ((ret = av_packet_ref(avctx->internal->buffer_pkt, pkt)) < 0)
2824  return ret;
2825  }
2826 
2827  avctx->internal->buffer_pkt->data += consumed;
2828  avctx->internal->buffer_pkt->size -= consumed;
2831  }
2832 
2833  if (got_frame)
2834  av_assert0(avctx->internal->buffer_frame->buf[0]);
2835 
2836  return 0;
2837 }
2838 
2839 int attribute_align_arg avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt)
2840 {
2841  int ret;
2842 
2843  if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
2844  return AVERROR(EINVAL);
2845 
2846  if (avctx->internal->draining)
2847  return AVERROR_EOF;
2848 
2849  if (avpkt && !avpkt->size && avpkt->data)
2850  return AVERROR(EINVAL);
2851 
2852  if (!avpkt || !avpkt->size) {
2853  avctx->internal->draining = 1;
2854  avpkt = NULL;
2855 
2856  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
2857  return 0;
2858  }
2859 
2860  if (avctx->codec->send_packet) {
2861  if (avpkt) {
2862  AVPacket tmp = *avpkt;
2863  int did_split = av_packet_split_side_data(&tmp);
2864  ret = apply_param_change(avctx, &tmp);
2865  if (ret >= 0)
2866  ret = avctx->codec->send_packet(avctx, &tmp);
2867  if (did_split)
2869  return ret;
2870  } else {
2871  return avctx->codec->send_packet(avctx, NULL);
2872  }
2873  }
2874 
2875  // Emulation via old API. Assume avpkt is likely not refcounted, while
2876  // decoder output is always refcounted, and avoid copying.
2877 
2878  if (avctx->internal->buffer_pkt->size || avctx->internal->buffer_frame->buf[0])
2879  return AVERROR(EAGAIN);
2880 
2881  // The goal is decoding the first frame of the packet without using memcpy,
2882  // because the common case is having only 1 frame per packet (especially
2883  // with video, but audio too). In other cases, it can't be avoided, unless
2884  // the user is feeding refcounted packets.
2885  return do_decode(avctx, (AVPacket *)avpkt);
2886 }
2887 
2888 int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
2889 {
2890  int ret;
2891 
2892  av_frame_unref(frame);
2893 
2894  if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
2895  return AVERROR(EINVAL);
2896 
2897  if (avctx->codec->receive_frame) {
2898  if (avctx->internal->draining && !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
2899  return AVERROR_EOF;
2900  ret = avctx->codec->receive_frame(avctx, frame);
2901  if (ret >= 0) {
2904  guess_correct_pts(avctx, frame->pts, frame->pkt_dts));
2905  }
2906  }
2907  return ret;
2908  }
2909 
2910  // Emulation via old API.
2911 
2912  if (!avctx->internal->buffer_frame->buf[0]) {
2913  if (!avctx->internal->buffer_pkt->size && !avctx->internal->draining)
2914  return AVERROR(EAGAIN);
2915 
2916  while (1) {
2917  if ((ret = do_decode(avctx, avctx->internal->buffer_pkt)) < 0) {
2919  return ret;
2920  }
2921  // Some audio decoders may consume partial data without returning
2922  // a frame (fate-wmapro-2ch). There is no way to make the caller
2923  // call avcodec_receive_frame() again without returning a frame,
2924  // so try to decode more in these cases.
2925  if (avctx->internal->buffer_frame->buf[0] ||
2926  !avctx->internal->buffer_pkt->size)
2927  break;
2928  }
2929  }
2930 
2931  if (!avctx->internal->buffer_frame->buf[0])
2932  return avctx->internal->draining ? AVERROR_EOF : AVERROR(EAGAIN);
2933 
2934  av_frame_move_ref(frame, avctx->internal->buffer_frame);
2935  return 0;
2936 }
2937 
2938 static int do_encode(AVCodecContext *avctx, const AVFrame *frame, int *got_packet)
2939 {
2940  int ret;
2941  *got_packet = 0;
2942 
2944  avctx->internal->buffer_pkt_valid = 0;
2945 
2946  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
2947  ret = avcodec_encode_video2(avctx, avctx->internal->buffer_pkt,
2948  frame, got_packet);
2949  } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2950  ret = avcodec_encode_audio2(avctx, avctx->internal->buffer_pkt,
2951  frame, got_packet);
2952  } else {
2953  ret = AVERROR(EINVAL);
2954  }
2955 
2956  if (ret >= 0 && *got_packet) {
2957  // Encoders must always return ref-counted buffers.
2958  // Side-data only packets have no data and can be not ref-counted.
2959  av_assert0(!avctx->internal->buffer_pkt->data || avctx->internal->buffer_pkt->buf);
2960  avctx->internal->buffer_pkt_valid = 1;
2961  ret = 0;
2962  } else {
2964  }
2965 
2966  return ret;
2967 }
2968 
2969 int attribute_align_arg avcodec_send_frame(AVCodecContext *avctx, const AVFrame *frame)
2970 {
2971  if (!avcodec_is_open(avctx) || !av_codec_is_encoder(avctx->codec))
2972  return AVERROR(EINVAL);
2973 
2974  if (avctx->internal->draining)
2975  return AVERROR_EOF;
2976 
2977  if (!frame) {
2978  avctx->internal->draining = 1;
2979 
2980  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
2981  return 0;
2982  }
2983 
2984  if (avctx->codec->send_frame)
2985  return avctx->codec->send_frame(avctx, frame);
2986 
2987  // Emulation via old API. Do it here instead of avcodec_receive_packet, because:
2988  // 1. if the AVFrame is not refcounted, the copying will be much more
2989  // expensive than copying the packet data
2990  // 2. assume few users use non-refcounted AVPackets, so usually no copy is
2991  // needed
2992 
2993  if (avctx->internal->buffer_pkt_valid)
2994  return AVERROR(EAGAIN);
2995 
2996  return do_encode(avctx, frame, &(int){0});
2997 }
2998 
2999 int attribute_align_arg avcodec_receive_packet(AVCodecContext *avctx, AVPacket *avpkt)
3000 {
3001  av_packet_unref(avpkt);
3002 
3003  if (!avcodec_is_open(avctx) || !av_codec_is_encoder(avctx->codec))
3004  return AVERROR(EINVAL);
3005 
3006  if (avctx->codec->receive_packet) {
3007  if (avctx->internal->draining && !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
3008  return AVERROR_EOF;
3009  return avctx->codec->receive_packet(avctx, avpkt);
3010  }
3011 
3012  // Emulation via old API.
3013 
3014  if (!avctx->internal->buffer_pkt_valid) {
3015  int got_packet;
3016  int ret;
3017  if (!avctx->internal->draining)
3018  return AVERROR(EAGAIN);
3019  ret = do_encode(avctx, NULL, &got_packet);
3020  if (ret < 0)
3021  return ret;
3022  if (ret >= 0 && !got_packet)
3023  return AVERROR_EOF;
3024  }
3025 
3026  av_packet_move_ref(avpkt, avctx->internal->buffer_pkt);
3027  avctx->internal->buffer_pkt_valid = 0;
3028  return 0;
3029 }
3030 
3032 {
3033  int i;
3034 
3035  if (!avctx)
3036  return 0;
3037 
3038  if (avcodec_is_open(avctx)) {
3039  FramePool *pool = avctx->internal->pool;
3040  if (CONFIG_FRAME_THREAD_ENCODER &&
3041  avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
3043  }
3044  if (HAVE_THREADS && avctx->internal->thread_ctx)
3045  ff_thread_free(avctx);
3046  if (avctx->codec && avctx->codec->close)
3047  avctx->codec->close(avctx);
3048  avctx->internal->byte_buffer_size = 0;
3049  av_freep(&avctx->internal->byte_buffer);
3050  av_frame_free(&avctx->internal->to_free);
3053  for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
3054  av_buffer_pool_uninit(&pool->pools[i]);
3055  av_freep(&avctx->internal->pool);
3056 
3057  if (avctx->hwaccel && avctx->hwaccel->uninit)
3058  avctx->hwaccel->uninit(avctx);
3060 
3061  av_freep(&avctx->internal);
3062  }
3063 
3064  for (i = 0; i < avctx->nb_coded_side_data; i++)
3065  av_freep(&avctx->coded_side_data[i].data);
3066  av_freep(&avctx->coded_side_data);
3067  avctx->nb_coded_side_data = 0;
3068 
3069  av_buffer_unref(&avctx->hw_frames_ctx);
3070  av_buffer_unref(&avctx->hw_device_ctx);
3071 
3072  if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
3073  av_opt_free(avctx->priv_data);
3074  av_opt_free(avctx);
3075  av_freep(&avctx->priv_data);
3076  if (av_codec_is_encoder(avctx->codec)) {
3077  av_freep(&avctx->extradata);
3078 #if FF_API_CODED_FRAME
3080  av_frame_free(&avctx->coded_frame);
3082 #endif
3083  }
3084  avctx->codec = NULL;
3085  avctx->active_thread_type = 0;
3086 
3087  return 0;
3088 }
3089 
3091 {
3092  switch(id){
3093  //This is for future deprecatec codec ids, its empty since
3094  //last major bump but will fill up again over time, please don't remove it
3095  default : return id;
3096  }
3097 }
3098 
3099 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
3100 {
3101  AVCodec *p, *experimental = NULL;
3102  p = first_avcodec;
3103  id= remap_deprecated_codec_id(id);
3104  while (p) {
3105  if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
3106  p->id == id) {
3107  if (p->capabilities & AV_CODEC_CAP_EXPERIMENTAL && !experimental) {
3108  experimental = p;
3109  } else
3110  return p;
3111  }
3112  p = p->next;
3113  }
3114  return experimental;
3115 }
3116 
3118 {
3119  return find_encdec(id, 1);
3120 }
3121 
3123 {
3124  AVCodec *p;
3125  if (!name)
3126  return NULL;
3127  p = first_avcodec;
3128  while (p) {
3129  if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
3130  return p;
3131  p = p->next;
3132  }
3133  return NULL;
3134 }
3135 
3137 {
3138  return find_encdec(id, 0);
3139 }
3140 
3142 {
3143  AVCodec *p;
3144  if (!name)
3145  return NULL;
3146  p = first_avcodec;
3147  while (p) {
3148  if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
3149  return p;
3150  p = p->next;
3151  }
3152  return NULL;
3153 }
3154 
3155 const char *avcodec_get_name(enum AVCodecID id)
3156 {
3157  const AVCodecDescriptor *cd;
3158  AVCodec *codec;
3159 
3160  if (id == AV_CODEC_ID_NONE)
3161  return "none";
3162  cd = avcodec_descriptor_get(id);
3163  if (cd)
3164  return cd->name;
3165  av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
3166  codec = avcodec_find_decoder(id);
3167  if (codec)
3168  return codec->name;
3169  codec = avcodec_find_encoder(id);
3170  if (codec)
3171  return codec->name;
3172  return "unknown_codec";
3173 }
3174 
3175 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
3176 {
3177  int i, len, ret = 0;
3178 
3179 #define TAG_PRINT(x) \
3180  (((x) >= '0' && (x) <= '9') || \
3181  ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
3182  ((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_'))
3183 
3184  for (i = 0; i < 4; i++) {
3185  len = snprintf(buf, buf_size,
3186  TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
3187  buf += len;
3188  buf_size = buf_size > len ? buf_size - len : 0;
3189  ret += len;
3190  codec_tag >>= 8;
3191  }
3192  return ret;
3193 }
3194 
3195 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
3196 {
3197  const char *codec_type;
3198  const char *codec_name;
3199  const char *profile = NULL;
3200  int64_t bitrate;
3201  int new_line = 0;
3202  AVRational display_aspect_ratio;
3203  const char *separator = enc->dump_separator ? (const char *)enc->dump_separator : ", ";
3204 
3205  if (!buf || buf_size <= 0)
3206  return;
3207  codec_type = av_get_media_type_string(enc->codec_type);
3208  codec_name = avcodec_get_name(enc->codec_id);
3209  profile = avcodec_profile_name(enc->codec_id, enc->profile);
3210 
3211  snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown",
3212  codec_name);
3213  buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
3214 
3215  if (enc->codec && strcmp(enc->codec->name, codec_name))
3216  snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name);
3217 
3218  if (profile)
3219  snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
3220  if ( enc->codec_type == AVMEDIA_TYPE_VIDEO
3222  && enc->refs)
3223  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3224  ", %d reference frame%s",
3225  enc->refs, enc->refs > 1 ? "s" : "");
3226 
3227  if (enc->codec_tag) {
3228  char tag_buf[32];
3229  av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
3230  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3231  " (%s / 0x%04X)", tag_buf, enc->codec_tag);
3232  }
3233 
3234  switch (enc->codec_type) {
3235  case AVMEDIA_TYPE_VIDEO:
3236  {
3237  char detail[256] = "(";
3238 
3239  av_strlcat(buf, separator, buf_size);
3240 
3241  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3242  "%s", enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
3244  if (enc->bits_per_raw_sample && enc->pix_fmt != AV_PIX_FMT_NONE &&
3246  av_strlcatf(detail, sizeof(detail), "%d bpc, ", enc->bits_per_raw_sample);
3248  av_strlcatf(detail, sizeof(detail), "%s, ",
3250 
3251  if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
3253  enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
3254  if (enc->colorspace != (int)enc->color_primaries ||
3255  enc->colorspace != (int)enc->color_trc) {
3256  new_line = 1;
3257  av_strlcatf(detail, sizeof(detail), "%s/%s/%s, ",
3261  } else
3262  av_strlcatf(detail, sizeof(detail), "%s, ",
3264  }
3265 
3266  if (enc->field_order != AV_FIELD_UNKNOWN) {
3267  const char *field_order = "progressive";
3268  if (enc->field_order == AV_FIELD_TT)
3269  field_order = "top first";
3270  else if (enc->field_order == AV_FIELD_BB)
3271  field_order = "bottom first";
3272  else if (enc->field_order == AV_FIELD_TB)
3273  field_order = "top coded first (swapped)";
3274  else if (enc->field_order == AV_FIELD_BT)
3275  field_order = "bottom coded first (swapped)";
3276 
3277  av_strlcatf(detail, sizeof(detail), "%s, ", field_order);
3278  }
3279 
3280  if (av_log_get_level() >= AV_LOG_VERBOSE &&
3282  av_strlcatf(detail, sizeof(detail), "%s, ",
3284 
3285  if (strlen(detail) > 1) {
3286  detail[strlen(detail) - 2] = 0;
3287  av_strlcatf(buf, buf_size, "%s)", detail);
3288  }
3289  }
3290 
3291  if (enc->width) {
3292  av_strlcat(buf, new_line ? separator : ", ", buf_size);
3293 
3294  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3295  "%dx%d",
3296  enc->width, enc->height);
3297 
3298  if (av_log_get_level() >= AV_LOG_VERBOSE &&
3299  (enc->width != enc->coded_width ||
3300  enc->height != enc->coded_height))
3301  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3302  " (%dx%d)", enc->coded_width, enc->coded_height);
3303 
3304  if (enc->sample_aspect_ratio.num) {
3305  av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3306  enc->width * (int64_t)enc->sample_aspect_ratio.num,
3307  enc->height * (int64_t)enc->sample_aspect_ratio.den,
3308  1024 * 1024);
3309  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3310  " [SAR %d:%d DAR %d:%d]",
3312  display_aspect_ratio.num, display_aspect_ratio.den);
3313  }
3314  if (av_log_get_level() >= AV_LOG_DEBUG) {
3315  int g = av_gcd(enc->time_base.num, enc->time_base.den);
3316  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3317  ", %d/%d",
3318  enc->time_base.num / g, enc->time_base.den / g);
3319  }
3320  }
3321  if (encode) {
3322  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3323  ", q=%d-%d", enc->qmin, enc->qmax);
3324  } else {
3326  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3327  ", Closed Captions");
3329  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3330  ", lossless");
3331  }
3332  break;
3333  case AVMEDIA_TYPE_AUDIO:
3334  av_strlcat(buf, separator, buf_size);
3335 
3336  if (enc->sample_rate) {
3337  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3338  "%d Hz, ", enc->sample_rate);
3339  }
3340  av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
3341  if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
3342  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3343  ", %s", av_get_sample_fmt_name(enc->sample_fmt));
3344  }
3345  if ( enc->bits_per_raw_sample > 0
3347  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3348  " (%d bit)", enc->bits_per_raw_sample);
3349  if (av_log_get_level() >= AV_LOG_VERBOSE) {
3350  if (enc->initial_padding)
3351  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3352  ", delay %d", enc->initial_padding);
3353  if (enc->trailing_padding)
3354  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3355  ", padding %d", enc->trailing_padding);
3356  }
3357  break;
3358  case AVMEDIA_TYPE_DATA:
3359  if (av_log_get_level() >= AV_LOG_DEBUG) {
3360  int g = av_gcd(enc->time_base.num, enc->time_base.den);
3361  if (g)
3362  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3363  ", %d/%d",
3364  enc->time_base.num / g, enc->time_base.den / g);
3365  }
3366  break;
3367  case AVMEDIA_TYPE_SUBTITLE:
3368  if (enc->width)
3369  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3370  ", %dx%d", enc->width, enc->height);
3371  break;
3372  default:
3373  return;
3374  }
3375  if (encode) {
3376  if (enc->flags & AV_CODEC_FLAG_PASS1)
3377  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3378  ", pass 1");
3379  if (enc->flags & AV_CODEC_FLAG_PASS2)
3380  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3381  ", pass 2");
3382  }
3383  bitrate = get_bit_rate(enc);
3384  if (bitrate != 0) {
3385  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3386  ", %"PRId64" kb/s", bitrate / 1000);
3387  } else if (enc->rc_max_rate > 0) {
3388  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3389  ", max. %"PRId64" kb/s", (int64_t)enc->rc_max_rate / 1000);
3390  }
3391 }
3392 
3393 const char *av_get_profile_name(const AVCodec *codec, int profile)
3394 {
3395  const AVProfile *p;
3396  if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
3397  return NULL;
3398 
3399  for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
3400  if (p->profile == profile)
3401  return p->name;
3402 
3403  return NULL;
3404 }
3405 
3407 {
3408  const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
3409  const AVProfile *p;
3410 
3411  if (profile == FF_PROFILE_UNKNOWN || !desc || !desc->profiles)
3412  return NULL;
3413 
3414  for (p = desc->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
3415  if (p->profile == profile)
3416  return p->name;
3417 
3418  return NULL;
3419 }
3420 
3421 unsigned avcodec_version(void)
3422 {
3423 // av_assert0(AV_CODEC_ID_V410==164);
3426 // av_assert0(AV_CODEC_ID_BMV_AUDIO==86071);
3427  av_assert0(AV_CODEC_ID_SRT==94216);
3429 
3430  return LIBAVCODEC_VERSION_INT;
3431 }
3432 
3433 const char *avcodec_configuration(void)
3434 {
3435  return FFMPEG_CONFIGURATION;
3436 }
3437 
3438 const char *avcodec_license(void)
3439 {
3440 #define LICENSE_PREFIX "libavcodec license: "
3441  return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
3442 }
3443 
3445 {
3446  avctx->internal->draining = 0;
3447  avctx->internal->draining_done = 0;
3450  avctx->internal->buffer_pkt_valid = 0;
3451 
3452  if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
3453  ff_thread_flush(avctx);
3454  else if (avctx->codec->flush)
3455  avctx->codec->flush(avctx);
3456 
3457  avctx->pts_correction_last_pts =
3458  avctx->pts_correction_last_dts = INT64_MIN;
3459 
3460  if (!avctx->refcounted_frames)
3461  av_frame_unref(avctx->internal->to_free);
3462 }
3463 
3465 {
3466  switch (codec_id) {
3467  case AV_CODEC_ID_8SVX_EXP:
3468  case AV_CODEC_ID_8SVX_FIB:
3469  case AV_CODEC_ID_ADPCM_CT:
3477  return 4;
3478  case AV_CODEC_ID_DSD_LSBF:
3479  case AV_CODEC_ID_DSD_MSBF:
3482  case AV_CODEC_ID_PCM_ALAW:
3483  case AV_CODEC_ID_PCM_MULAW:
3484  case AV_CODEC_ID_PCM_S8:
3486  case AV_CODEC_ID_PCM_U8:
3487  case AV_CODEC_ID_PCM_ZORK:
3488  case AV_CODEC_ID_SDX2_DPCM:
3489  return 8;
3490  case AV_CODEC_ID_PCM_S16BE:
3492  case AV_CODEC_ID_PCM_S16LE:
3494  case AV_CODEC_ID_PCM_U16BE:
3495  case AV_CODEC_ID_PCM_U16LE:
3496  return 16;
3498  case AV_CODEC_ID_PCM_S24BE:
3499  case AV_CODEC_ID_PCM_S24LE:
3501  case AV_CODEC_ID_PCM_U24BE:
3502  case AV_CODEC_ID_PCM_U24LE:
3503  return 24;
3504  case AV_CODEC_ID_PCM_S32BE:
3505  case AV_CODEC_ID_PCM_S32LE:
3507  case AV_CODEC_ID_PCM_U32BE:
3508  case AV_CODEC_ID_PCM_U32LE:
3509  case AV_CODEC_ID_PCM_F32BE:
3510  case AV_CODEC_ID_PCM_F32LE:
3511  case AV_CODEC_ID_PCM_F24LE:
3512  case AV_CODEC_ID_PCM_F16LE:
3513  return 32;
3514  case AV_CODEC_ID_PCM_F64BE:
3515  case AV_CODEC_ID_PCM_F64LE:
3516  case AV_CODEC_ID_PCM_S64BE:
3517  case AV_CODEC_ID_PCM_S64LE:
3518  return 64;
3519  default:
3520  return 0;
3521  }
3522 }
3523 
3525 {
3526  static const enum AVCodecID map[AV_SAMPLE_FMT_NB][2] = {
3538  };
3539  if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB)
3540  return AV_CODEC_ID_NONE;
3541  if (be < 0 || be > 1)
3542  be = AV_NE(1, 0);
3543  return map[fmt][be];
3544 }
3545 
3547 {
3548  switch (codec_id) {
3550  return 2;
3552  return 3;
3556  case AV_CODEC_ID_ADPCM_SWF:
3557  case AV_CODEC_ID_ADPCM_MS:
3558  return 4;
3559  default:
3560  return av_get_exact_bits_per_sample(codec_id);
3561  }
3562 }
3563 
3564 static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba,
3565  uint32_t tag, int bits_per_coded_sample, int64_t bitrate,
3566  uint8_t * extradata, int frame_size, int frame_bytes)
3567 {
3569  int framecount = (ba > 0 && frame_bytes / ba > 0) ? frame_bytes / ba : 1;
3570 
3571  /* codecs with an exact constant bits per sample */
3572  if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
3573  return (frame_bytes * 8LL) / (bps * ch);
3574  bps = bits_per_coded_sample;
3575 
3576  /* codecs with a fixed packet duration */
3577  switch (id) {
3578  case AV_CODEC_ID_ADPCM_ADX: return 32;
3579  case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
3580  case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
3581  case AV_CODEC_ID_AMR_NB:
3582  case AV_CODEC_ID_EVRC:
3583  case AV_CODEC_ID_GSM:
3584  case AV_CODEC_ID_QCELP:
3585  case AV_CODEC_ID_RA_288: return 160;
3586  case AV_CODEC_ID_AMR_WB:
3587  case AV_CODEC_ID_GSM_MS: return 320;
3588  case AV_CODEC_ID_MP1: return 384;
3589  case AV_CODEC_ID_ATRAC1: return 512;
3590  case AV_CODEC_ID_ATRAC3: return 1024 * framecount;
3591  case AV_CODEC_ID_ATRAC3P: return 2048;
3592  case AV_CODEC_ID_MP2:
3593  case AV_CODEC_ID_MUSEPACK7: return 1152;
3594  case AV_CODEC_ID_AC3: return 1536;
3595  }
3596 
3597  if (sr > 0) {
3598  /* calc from sample rate */
3599  if (id == AV_CODEC_ID_TTA)
3600  return 256 * sr / 245;
3601  else if (id == AV_CODEC_ID_DST)
3602  return 588 * sr / 44100;
3603 
3604  if (ch > 0) {
3605  /* calc from sample rate and channels */
3606  if (id == AV_CODEC_ID_BINKAUDIO_DCT)
3607  return (480 << (sr / 22050)) / ch;
3608  }
3609  }
3610 
3611  if (ba > 0) {
3612  /* calc from block_align */
3613  if (id == AV_CODEC_ID_SIPR) {
3614  switch (ba) {
3615  case 20: return 160;
3616  case 19: return 144;
3617  case 29: return 288;
3618  case 37: return 480;
3619  }
3620  } else if (id == AV_CODEC_ID_ILBC) {
3621  switch (ba) {
3622  case 38: return 160;
3623  case 50: return 240;
3624  }
3625  }
3626  }
3627 
3628  if (frame_bytes > 0) {
3629  /* calc from frame_bytes only */
3630  if (id == AV_CODEC_ID_TRUESPEECH)
3631  return 240 * (frame_bytes / 32);
3632  if (id == AV_CODEC_ID_NELLYMOSER)
3633  return 256 * (frame_bytes / 64);
3634  if (id == AV_CODEC_ID_RA_144)
3635  return 160 * (frame_bytes / 20);
3636  if (id == AV_CODEC_ID_G723_1)
3637  return 240 * (frame_bytes / 24);
3638 
3639  if (bps > 0) {
3640  /* calc from frame_bytes and bits_per_coded_sample */
3641  if (id == AV_CODEC_ID_ADPCM_G726)
3642  return frame_bytes * 8 / bps;
3643  }
3644 
3645  if (ch > 0 && ch < INT_MAX/16) {
3646  /* calc from frame_bytes and channels */
3647  switch (id) {
3648  case AV_CODEC_ID_ADPCM_AFC:
3649  return frame_bytes / (9 * ch) * 16;
3650  case AV_CODEC_ID_ADPCM_PSX:
3651  case AV_CODEC_ID_ADPCM_DTK:
3652  return frame_bytes / (16 * ch) * 28;
3653  case AV_CODEC_ID_ADPCM_4XM:
3656  return (frame_bytes - 4 * ch) * 2 / ch;
3658  return (frame_bytes - 4) * 2 / ch;
3660  return (frame_bytes - 8) * 2 / ch;
3661  case AV_CODEC_ID_ADPCM_THP:
3663  if (extradata)
3664  return frame_bytes * 14 / (8 * ch);
3665  break;
3666  case AV_CODEC_ID_ADPCM_XA:
3667  return (frame_bytes / 128) * 224 / ch;
3669  return (frame_bytes - 6 - ch) / ch;
3670  case AV_CODEC_ID_ROQ_DPCM:
3671  return (frame_bytes - 8) / ch;
3672  case AV_CODEC_ID_XAN_DPCM:
3673  return (frame_bytes - 2 * ch) / ch;
3674  case AV_CODEC_ID_MACE3:
3675  return 3 * frame_bytes / ch;
3676  case AV_CODEC_ID_MACE6:
3677  return 6 * frame_bytes / ch;
3678  case AV_CODEC_ID_PCM_LXF:
3679  return 2 * (frame_bytes / (5 * ch));
3680  case AV_CODEC_ID_IAC:
3681  case AV_CODEC_ID_IMC:
3682  return 4 * frame_bytes / ch;
3683  }
3684 
3685  if (tag) {
3686  /* calc from frame_bytes, channels, and codec_tag */
3687  if (id == AV_CODEC_ID_SOL_DPCM) {
3688  if (tag == 3)
3689  return frame_bytes / ch;
3690  else
3691  return frame_bytes * 2 / ch;
3692  }
3693  }
3694 
3695  if (ba > 0) {
3696  /* calc from frame_bytes, channels, and block_align */
3697  int blocks = frame_bytes / ba;
3698  switch (id) {
3700  if (bps < 2 || bps > 5)
3701  return 0;
3702  return blocks * (1 + (ba - 4 * ch) / (bps * ch) * 8);
3704  return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
3706  return blocks * (1 + (ba - 4 * ch) * 2 / ch);
3708  return blocks * ((ba - 4 * ch) * 2 / ch);
3709  case AV_CODEC_ID_ADPCM_MS:
3710  return blocks * (2 + (ba - 7 * ch) * 2 / ch);
3712  return blocks * (ba - 16) * 2 / ch;
3713  }
3714  }
3715 
3716  if (bps > 0) {
3717  /* calc from frame_bytes, channels, and bits_per_coded_sample */
3718  switch (id) {
3719  case AV_CODEC_ID_PCM_DVD:
3720  if(bps<4)
3721  return 0;
3722  return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
3724  if(bps<4)
3725  return 0;
3726  return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
3727  case AV_CODEC_ID_S302M:
3728  return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
3729  }
3730  }
3731  }
3732  }
3733 
3734  /* Fall back on using frame_size */
3735  if (frame_size > 1 && frame_bytes)
3736  return frame_size;
3737 
3738  //For WMA we currently have no other means to calculate duration thus we
3739  //do it here by assuming CBR, which is true for all known cases.
3740  if (bitrate > 0 && frame_bytes > 0 && sr > 0 && ba > 1) {
3741  if (id == AV_CODEC_ID_WMAV1 || id == AV_CODEC_ID_WMAV2)
3742  return (frame_bytes * 8LL * sr) / bitrate;
3743  }
3744 
3745  return 0;
3746 }
3747 
3748 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
3749 {
3750  return get_audio_frame_duration(avctx->codec_id, avctx->sample_rate,
3751  avctx->channels, avctx->block_align,
3752  avctx->codec_tag, avctx->bits_per_coded_sample,
3753  avctx->bit_rate, avctx->extradata, avctx->frame_size,
3754  frame_bytes);
3755 }
3756 
3758 {
3759  return get_audio_frame_duration(par->codec_id, par->sample_rate,
3760  par->channels, par->block_align,
3761  par->codec_tag, par->bits_per_coded_sample,
3762  par->bit_rate, par->extradata, par->frame_size,
3763  frame_bytes);
3764 }
3765 
3766 #if !HAVE_THREADS
3768 {
3769  return -1;
3770 }
3771 
3772 #endif
3773 
3774 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
3775 {
3776  unsigned int n = 0;
3777 
3778  while (v >= 0xff) {
3779  *s++ = 0xff;
3780  v -= 0xff;
3781  n++;
3782  }
3783  *s = v;
3784  n++;
3785  return n;
3786 }
3787 
3788 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
3789 {
3790  int i;
3791  for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
3792  return i;
3793 }
3794 
3795 #if FF_API_MISSING_SAMPLE
3797 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
3798 {
3799  av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your FFmpeg "
3800  "version to the newest one from Git. If the problem still "
3801  "occurs, it means that your file has a feature which has not "
3802  "been implemented.\n", feature);
3803  if(want_sample)
3805 }
3806 
3807 void av_log_ask_for_sample(void *avc, const char *msg, ...)
3808 {
3809  va_list argument_list;
3810 
3811  va_start(argument_list, msg);
3812 
3813  if (msg)
3814  av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
3815  av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
3816  "of this file to ftp://upload.ffmpeg.org/incoming/ "
3817  "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)\n");
3818 
3819  va_end(argument_list);
3820 }
3822 #endif /* FF_API_MISSING_SAMPLE */
3823 
3826 
3828 {
3829  AVHWAccel **p = last_hwaccel;
3830  hwaccel->next = NULL;
3831  while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, hwaccel))
3832  p = &(*p)->next;
3833  last_hwaccel = &hwaccel->next;
3834 }
3835 
3837 {
3838  return hwaccel ? hwaccel->next : first_hwaccel;
3839 }
3840 
3841 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
3842 {
3843  if (lockmgr_cb) {
3844  // There is no good way to rollback a failure to destroy the
3845  // mutex, so we ignore failures.
3848  lockmgr_cb = NULL;
3849  codec_mutex = NULL;
3850  avformat_mutex = NULL;
3851  }
3852 
3853  if (cb) {
3854  void *new_codec_mutex = NULL;
3855  void *new_avformat_mutex = NULL;
3856  int err;
3857  if (err = cb(&new_codec_mutex, AV_LOCK_CREATE)) {
3858  return err > 0 ? AVERROR_UNKNOWN : err;
3859  }
3860  if (err = cb(&new_avformat_mutex, AV_LOCK_CREATE)) {
3861  // Ignore failures to destroy the newly created mutex.
3862  cb(&new_codec_mutex, AV_LOCK_DESTROY);
3863  return err > 0 ? AVERROR_UNKNOWN : err;
3864  }
3865  lockmgr_cb = cb;
3866  codec_mutex = new_codec_mutex;
3867  avformat_mutex = new_avformat_mutex;
3868  }
3869 
3870  return 0;
3871 }
3872 
3873 int ff_lock_avcodec(AVCodecContext *log_ctx, const AVCodec *codec)
3874 {
3875  if (codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE || !codec->init)
3876  return 0;
3877 
3878  if (lockmgr_cb) {
3880  return -1;
3881  }
3882 
3884  av_log(log_ctx, AV_LOG_ERROR,
3885  "Insufficient thread locking. At least %d threads are "
3886  "calling avcodec_open2() at the same time right now.\n",
3888  if (!lockmgr_cb)
3889  av_log(log_ctx, AV_LOG_ERROR, "No lock manager is set, please see av_lockmgr_register()\n");
3890  ff_avcodec_locked = 1;
3891  ff_unlock_avcodec(codec);
3892  return AVERROR(EINVAL);
3893  }
3895  ff_avcodec_locked = 1;
3896  return 0;
3897 }
3898 
3899 int ff_unlock_avcodec(const AVCodec *codec)
3900 {
3901  if (codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE || !codec->init)
3902  return 0;
3903 
3905  ff_avcodec_locked = 0;
3907  if (lockmgr_cb) {
3909  return -1;
3910  }
3911 
3912  return 0;
3913 }
3914 
3916 {
3917  if (lockmgr_cb) {
3919  return -1;
3920  }
3921  return 0;
3922 }
3923 
3925 {
3926  if (lockmgr_cb) {
3928  return -1;
3929  }
3930  return 0;
3931 }
3932 
3933 unsigned int avpriv_toupper4(unsigned int x)
3934 {
3935  return av_toupper(x & 0xFF) +
3936  (av_toupper((x >> 8) & 0xFF) << 8) +
3937  (av_toupper((x >> 16) & 0xFF) << 16) +
3938 ((unsigned)av_toupper((x >> 24) & 0xFF) << 24);
3939 }
3940 
3942 {
3943  int ret;
3944 
3945  dst->owner = src->owner;
3946 
3947  ret = av_frame_ref(dst->f, src->f);
3948  if (ret < 0)
3949  return ret;
3950 
3951  av_assert0(!dst->progress);
3952 
3953  if (src->progress &&
3954  !(dst->progress = av_buffer_ref(src->progress))) {
3955  ff_thread_release_buffer(dst->owner, dst);
3956  return AVERROR(ENOMEM);
3957  }
3958 
3959  return 0;
3960 }
3961 
3962 #if !HAVE_THREADS
3963 
3965 {
3966  return ff_get_format(avctx, fmt);
3967 }
3968 
3970 {
3971  f->owner = avctx;
3972  return ff_get_buffer(avctx, f->f, flags);
3973 }
3974 
3976 {
3977  if (f->f)
3978  av_frame_unref(f->f);
3979 }
3980 
3982 {
3983 }
3984 
3985 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
3986 {
3987 }
3988 
3989 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
3990 {
3991 }
3992 
3994 {
3995  return 1;
3996 }
3997 
3999 {
4000  return 0;
4001 }
4002 
4004 {
4005 }
4006 
4007 void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
4008 {
4009 }
4010 
4011 void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n)
4012 {
4013 }
4014 
4015 #endif
4016 
4018 {
4019  return !!s->internal;
4020 }
4021 
4022 int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf)
4023 {
4024  int ret;
4025  char *str;
4026 
4027  ret = av_bprint_finalize(buf, &str);
4028  if (ret < 0)
4029  return ret;
4030  if (!av_bprint_is_complete(buf)) {
4031  av_free(str);
4032  return AVERROR(ENOMEM);
4033  }
4034 
4035  avctx->extradata = str;
4036  /* Note: the string is NUL terminated (so extradata can be read as a
4037  * string), but the ending character is not accounted in the size (in
4038  * binary formats you are likely not supposed to mux that character). When
4039  * extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
4040  * zeros. */
4041  avctx->extradata_size = buf->len;
4042  return 0;
4043 }
4044 
4045 const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
4046  const uint8_t *end,
4047  uint32_t *av_restrict state)
4048 {
4049  int i;
4050 
4051  av_assert0(p <= end);
4052  if (p >= end)
4053  return end;
4054 
4055  for (i = 0; i < 3; i++) {
4056  uint32_t tmp = *state << 8;
4057  *state = tmp + *(p++);
4058  if (tmp == 0x100 || p == end)
4059  return p;
4060  }
4061 
4062  while (p < end) {
4063  if (p[-1] > 1 ) p += 3;
4064  else if (p[-2] ) p += 2;
4065  else if (p[-3]|(p[-1]-1)) p++;
4066  else {
4067  p++;
4068  break;
4069  }
4070  }
4071 
4072  p = FFMIN(p, end) - 4;
4073  *state = AV_RB32(p);
4074 
4075  return p + 4;
4076 }
4077 
4079 {
4080  AVCPBProperties *props = av_mallocz(sizeof(AVCPBProperties));
4081  if (!props)
4082  return NULL;
4083 
4084  if (size)
4085  *size = sizeof(*props);
4086 
4087  props->vbv_delay = UINT64_MAX;
4088 
4089  return props;
4090 }
4091 
4093 {
4095  AVCPBProperties *props;
4096  size_t size;
4097 
4098  props = av_cpb_properties_alloc(&size);
4099  if (!props)
4100  return NULL;
4101 
4102  tmp = av_realloc_array(avctx->coded_side_data, avctx->nb_coded_side_data + 1, sizeof(*tmp));
4103  if (!tmp) {
4104  av_freep(&props);
4105  return NULL;
4106  }
4107 
4108  avctx->coded_side_data = tmp;
4109  avctx->nb_coded_side_data++;
4110 
4112  avctx->coded_side_data[avctx->nb_coded_side_data - 1].data = (uint8_t*)props;
4113  avctx->coded_side_data[avctx->nb_coded_side_data - 1].size = size;
4114 
4115  return props;
4116 }
4117 
4119 {
4120  av_freep(&par->extradata);
4121 
4122  memset(par, 0, sizeof(*par));
4123 
4125  par->codec_id = AV_CODEC_ID_NONE;
4126  par->format = -1;
4133  par->sample_aspect_ratio = (AVRational){ 0, 1 };
4134  par->profile = FF_PROFILE_UNKNOWN;
4135  par->level = FF_LEVEL_UNKNOWN;
4136 }
4137 
4139 {
4140  AVCodecParameters *par = av_mallocz(sizeof(*par));
4141 
4142  if (!par)
4143  return NULL;
4145  return par;
4146 }
4147 
4149 {
4150  AVCodecParameters *par = *ppar;
4151 
4152  if (!par)
4153  return;
4155 
4156  av_freep(ppar);
4157 }
4158 
4160 {
4162  memcpy(dst, src, sizeof(*dst));
4163 
4164  dst->extradata = NULL;
4165  dst->extradata_size = 0;
4166  if (src->extradata) {
4168  if (!dst->extradata)
4169  return AVERROR(ENOMEM);
4170  memcpy(dst->extradata, src->extradata, src->extradata_size);
4171  dst->extradata_size = src->extradata_size;
4172  }
4173 
4174  return 0;
4175 }
4176 
4178  const AVCodecContext *codec)
4179 {
4181 
4182  par->codec_type = codec->codec_type;
4183  par->codec_id = codec->codec_id;
4184  par->codec_tag = codec->codec_tag;
4185 
4186  par->bit_rate = codec->bit_rate;
4189  par->profile = codec->profile;
4190  par->level = codec->level;
4191 
4192  switch (par->codec_type) {
4193  case AVMEDIA_TYPE_VIDEO:
4194  par->format = codec->pix_fmt;
4195  par->width = codec->width;
4196  par->height = codec->height;
4197  par->field_order = codec->field_order;
4198  par->color_range = codec->color_range;
4199  par->color_primaries = codec->color_primaries;
4200  par->color_trc = codec->color_trc;
4201  par->color_space = codec->colorspace;
4204  par->video_delay = codec->has_b_frames;
4205  break;
4206  case AVMEDIA_TYPE_AUDIO:
4207  par->format = codec->sample_fmt;
4208  par->channel_layout = codec->channel_layout;
4209  par->channels = codec->channels;
4210  par->sample_rate = codec->sample_rate;
4211  par->block_align = codec->block_align;
4212  par->frame_size = codec->frame_size;
4213  par->initial_padding = codec->initial_padding;
4214  par->trailing_padding = codec->trailing_padding;
4215  par->seek_preroll = codec->seek_preroll;
4216  break;
4217  case AVMEDIA_TYPE_SUBTITLE:
4218  par->width = codec->width;
4219  par->height = codec->height;
4220  break;
4221  }
4222 
4223  if (codec->extradata) {
4225  if (!par->extradata)
4226  return AVERROR(ENOMEM);
4227  memcpy(par->extradata, codec->extradata, codec->extradata_size);
4228  par->extradata_size = codec->extradata_size;
4229  }
4230 
4231  return 0;
4232 }
4233 
4235  const AVCodecParameters *par)
4236 {
4237  codec->codec_type = par->codec_type;
4238  codec->codec_id = par->codec_id;
4239  codec->codec_tag = par->codec_tag;
4240 
4241  codec->bit_rate = par->bit_rate;
4244  codec->profile = par->profile;
4245  codec->level = par->level;
4246 
4247  switch (par->codec_type) {
4248  case AVMEDIA_TYPE_VIDEO:
4249  codec->pix_fmt = par->format;
4250  codec->width = par->width;
4251  codec->height = par->height;
4252  codec->field_order = par->field_order;
4253  codec->color_range = par->color_range;
4254  codec->color_primaries = par->color_primaries;
4255  codec->color_trc = par->color_trc;
4256  codec->colorspace = par->color_space;
4259  codec->has_b_frames = par->video_delay;
4260  break;
4261  case AVMEDIA_TYPE_AUDIO:
4262  codec->sample_fmt = par->format;
4263  codec->channel_layout = par->channel_layout;
4264  codec->channels = par->channels;
4265  codec->sample_rate = par->sample_rate;
4266  codec->block_align = par->block_align;
4267  codec->frame_size = par->frame_size;
4268  codec->delay =
4269  codec->initial_padding = par->initial_padding;
4270  codec->trailing_padding = par->trailing_padding;
4271  codec->seek_preroll = par->seek_preroll;
4272  break;
4273  case AVMEDIA_TYPE_SUBTITLE:
4274  codec->width = par->width;
4275  codec->height = par->height;
4276  break;
4277  }
4278 
4279  if (par->extradata) {
4280  av_freep(&codec->extradata);
4282  if (!codec->extradata)
4283  return AVERROR(ENOMEM);
4284  memcpy(codec->extradata, par->extradata, par->extradata_size);
4285  codec->extradata_size = par->extradata_size;
4286  }
4287 
4288  return 0;
4289 }
4290 
4291 int ff_alloc_a53_sei(const AVFrame *frame, size_t prefix_len,
4292  void **data, size_t *sei_size)
4293 {
4294  AVFrameSideData *side_data = NULL;
4295  uint8_t *sei_data;
4296 
4297  if (frame)
4298  side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_A53_CC);
4299 
4300  if (!side_data) {
4301  *data = NULL;
4302  return 0;
4303  }
4304 
4305  *sei_size = side_data->size + 11;
4306  *data = av_mallocz(*sei_size + prefix_len);
4307  if (!*data)
4308  return AVERROR(ENOMEM);
4309  sei_data = (uint8_t*)*data + prefix_len;
4310 
4311  // country code
4312  sei_data[0] = 181;
4313  sei_data[1] = 0;
4314  sei_data[2] = 49;
4315 
4316  /**
4317  * 'GA94' is standard in North America for ATSC, but hard coding
4318  * this style may not be the right thing to do -- other formats
4319  * do exist. This information is not available in the side_data
4320  * so we are going with this right now.
4321  */
4322  AV_WL32(sei_data + 3, MKTAG('G', 'A', '9', '4'));
4323  sei_data[7] = 3;
4324  sei_data[8] = ((side_data->size/3) & 0x1f) | 0x40;
4325  sei_data[9] = 0;
4326 
4327  memcpy(sei_data + 10, side_data->data, side_data->size);
4328 
4329  sei_data[side_data->size+10] = 255;
4330 
4331  return 0;
4332 }
#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:2914
static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
Definition: utils.c:2095
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:4115
float, planar
Definition: samplefmt.h:69
#define UTF8_MAX_BYTES
Definition: utils.c:2498
#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:3454
#define NULL
Definition: coverity.c:32
const struct AVCodec * codec
Definition: avcodec.h:1699
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:3390
const char const char void * val
Definition: avisynth_c.h:771
#define avpriv_atomic_int_add_and_fetch
Definition: atomic_gcc.h:50
enum AVFieldOrder field_order
Video only.
Definition: avcodec.h:4106
static int64_t get_bit_rate(AVCodecContext *ctx)
Definition: utils.c:1212
const AVCodecDescriptor * codec_descriptor
AVCodecDescriptor Code outside libavcodec should access this field using: av_codec_{get,set}_codec_descriptor(avctx)
Definition: avcodec.h:3415
static AVCodec * find_encdec(enum AVCodecID id, int encoder)
Definition: utils.c:3099
planar YUV 4:4:0,20bpp, (1 Cr & Cb sample per 1x2 Y samples), little-endian
Definition: pixfmt.h:289
const char * s
Definition: avisynth_c.h:768
planar YUV 4:4:4,42bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
Definition: pixfmt.h:266
uint32_t fourcc
Definition: hwcontext_qsv.c:90
enum AVColorTransferCharacteristic color_trc
Definition: avcodec.h:4113
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
Number of sample formats. DO NOT USE if linking dynamically.
Definition: samplefmt.h:74
static enum AVPixelFormat pix_fmt
#define AV_NUM_DATA_POINTERS
Definition: frame.h:191
void av_bprintf(AVBPrint *buf, const char *fmt,...)
Definition: bprint.c:94
int ff_thread_video_encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet_ptr)
int64_t av_frame_get_pkt_duration(const AVFrame *frame)
static int shift(int a, int b)
Definition: sonic.c:82
AVPacketSideDataType
Definition: avcodec.h:1370
planar YUV 4:2:0,21bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
Definition: pixfmt.h:259
static av_always_inline int pthread_mutex_destroy(pthread_mutex_t *mutex)
Definition: os2threads.h:106
#define FF_SUB_CHARENC_MODE_AUTOMATIC
libavcodec will select the mode itself
Definition: avcodec.h:3453
int64_t pts_correction_num_faulty_dts
Number of incorrect PTS values so far.
Definition: avcodec.h:3434
int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
Set various frame properties from the codec context / packet data.
Definition: utils.c:876
void av_buffer_unref(AVBufferRef **buf)
Free a given reference and automatically free the buffer if there are no more references to it...
Definition: buffer.c:124
#define GET_UTF8(val, GET_BYTE, ERROR)
Convert a UTF-8 character (up to 4 bytes) to its 32-bit UCS-4 encoded form.
Definition: common.h:361
unsigned int fourcc
Definition: raw.h:35
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2332
This structure describes decoded (raw) audio or video data.
Definition: frame.h:190
int(* send_packet)(AVCodecContext *avctx, const AVPacket *avpkt)
Definition: avcodec.h:3742
AVCodec * avcodec_find_encoder(enum AVCodecID id)
Find a registered encoder with a matching codec ID.
Definition: utils.c:3117
int(* init)(AVCodecContext *avctx)
Initialize the hwaccel private data.
Definition: avcodec.h:3882
int stride_align[AV_NUM_DATA_POINTERS]
Definition: internal.h:97
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
planar YUV 4:2:2,28bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
Definition: pixfmt.h:263
planar YUV 4:2:0, 15bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
Definition: pixfmt.h:170
This side data must be associated with an audio frame and corresponds to enum AVAudioServiceType defi...
Definition: frame.h:112
enum AVCodecID id
Definition: mxfenc.c:104
#define AV_CODEC_FLAG2_SKIP_MANUAL
Do not skip samples and export skip information as frame side data.
Definition: avcodec.h:945
int coded_width
Bitstream width / height, may be different from width/height e.g.
Definition: avcodec.h:1892
int capabilities
Hardware accelerated codec capabilities.
Definition: avcodec.h:3798
const char * fmt
Definition: avisynth_c.h:769
void(* flush)(AVCodecContext *)
Flush buffers.
Definition: avcodec.h:3749
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:3841
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:6194
#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:1755
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2372
AVFrame * to_free
Definition: internal.h:134
packed RGB 8:8:8, 24bpp, RGBRGB...
Definition: pixfmt.h:64
int64_t pos
byte position in stream, -1 if unknown
Definition: avcodec.h:1635
enum AVColorRange av_frame_get_color_range(const AVFrame *frame)
AVBufferRef * buf[AV_NUM_DATA_POINTERS]
AVBuffer references backing the data for this frame.
Definition: frame.h:373
const char * g
Definition: vf_curves.c:112
const char * desc
Definition: nvenc.c:60
int width
Definition: internal.h:96
#define LIBAVCODEC_VERSION_MICRO
Definition: version.h:32
planar YUV 4:4:4, 27bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
Definition: pixfmt.h:173
AVRational sample_aspect_ratio
Video only.
Definition: avcodec.h:4101
int rc_initial_buffer_occupancy
Number of bits which should be loaded into the rc buffer before decoding starts.
Definition: avcodec.h:2729
static int do_decode(AVCodecContext *avctx, AVPacket *pkt)
Definition: utils.c:2775
int attribute_align_arg avcodec_receive_packet(AVCodecContext *avctx, AVPacket *avpkt)
Read encoded data from the encoder.
Definition: utils.c:2999
planar YUV 4:4:4,36bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
Definition: pixfmt.h:264
This side data should be associated with a video stream and contains Stereoscopic 3D information in f...
Definition: avcodec.h:1439
void av_opt_set_defaults(void *s)
Set the values of all AVOption fields to their default values.
Definition: opt.c:1293
const char * avcodec_configuration(void)
Return the libavcodec build-time configuration.
Definition: utils.c:3433
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition: avcodec.h:2427
int nb_extended_buf
Number of elements in extended_buf.
Definition: frame.h:391
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: avcodec.h:4025
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:180
int ff_unlock_avcodec(const AVCodec *codec)
Definition: utils.c:3899
int num
Numerator.
Definition: rational.h:59
#define FF_SUB_CHARENC_MODE_DO_NOTHING
do nothing (demuxer outputs a stream supposed to be already in UTF-8, or the codec is bitmap for inst...
Definition: avcodec.h:3452
int size
Definition: avcodec.h:1616
const char * b
Definition: vf_curves.c:113
const char * avcodec_license(void)
Return the libavcodec license.
Definition: utils.c:3438
enum AVPixelFormat pix_fmt
Supported pixel format.
Definition: avcodec.h:3792
static int get_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
Definition: utils.c:905
static struct @250 state
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:2101
static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
Pad last frame with silence.
Definition: utils.c:1777
AVPacket * pkt
Current packet as passed into the decoder, to avoid having to pass the packet into every function...
Definition: internal.h:144
planar YUV 4:4:4 40bpp, (1 Cr & Cb sample per 1x1 Y & A samples, little-endian)
Definition: pixfmt.h:201
int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr)
Encode a frame of audio.
Definition: utils.c:1814
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:732
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1918
enum AVPixelFormat pix_fmt
Definition: raw.h:34
int samples
Definition: internal.h:101
void av_frame_set_pkt_duration(AVFrame *frame, int64_t val)
int av_dict_copy(AVDictionary **dst, const AVDictionary *src, int flags)
Copy entries from one AVDictionary struct into another.
Definition: dict.c:217
int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx, AVFrame *frame, int *got_frame_ptr, const AVPacket *avpkt)
Decode the audio frame of size avpkt->size from avpkt->data into frame.
Definition: utils.c:2322
enum AVPixelFormat format
The pixel format identifying the underlying HW surface type.
Definition: hwcontext.h:202
Mastering display metadata associated with a video frame.
Definition: frame.h:118
unsigned num_rects
Definition: avcodec.h:4005
int avpriv_codec_get_cap_skip_frame_fill_param(const AVCodec *codec)
Definition: utils.c:1202
void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
Same behaviour av_fast_malloc but the buffer has additional AV_INPUT_BUFFER_PADDING_SIZE at the end w...
Definition: utils.c:120
planar GBR 4:4:4 36bpp, little-endian
Definition: pixfmt.h:269
The following 12 formats have the disadvantage of needing 1 format for each bit depth.
Definition: pixfmt.h:167
#define AV_CODEC_CAP_EXPERIMENTAL
Codec is experimental and is thus avoided in favor of non experimental encoders.
Definition: avcodec.h:1022
void av_frame_move_ref(AVFrame *dst, AVFrame *src)
Move everything contained in src to dst and reset src.
Definition: frame.c:528
mpegvideo header.
enum AVMediaType type
Definition: avcodec.h:3658
static int convert_sub_to_old_ass_form(AVSubtitle *sub, const AVPacket *pkt, AVRational tb)
Definition: utils.c:2591
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:3175
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:252
AVBufferPool * pools[4]
Pools for each data plane.
Definition: internal.h:90
int(* decode)(AVCodecContext *, void *outdata, int *outdata_size, AVPacket *avpkt)
Definition: avcodec.h:3728
static AVPacket pkt
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:3092
enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
Wrapper around get_format() for frame-multithreaded codecs.
Definition: utils.c:3964
int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
Converts AVChromaLocation to swscale x/y chroma position.
Definition: utils.c:452
#define AV_CODEC_CAP_AUTO_THREADS
Codec supports avctx->thread_count == 0 (auto).
Definition: avcodec.h:1042
int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub, int *got_sub_ptr, AVPacket *avpkt)
Decode a subtitle message.
Definition: utils.c:2649
int trailing_padding
Audio only.
Definition: avcodec.h:4161
#define src
Definition: vp8dsp.c:254
void av_frame_set_pkt_size(AVFrame *frame, int val)
int profile
profile
Definition: avcodec.h:3196
planar GBR 4:4:4 36bpp, big-endian
Definition: pixfmt.h:268
AVCodec.
Definition: avcodec.h:3645
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:2489
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:4017
AVLockOp
Lock operation used by lockmgr.
Definition: avcodec.h:6191
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:3989
enum AVColorSpace color_space
Definition: avcodec.h:4114
unsigned avcodec_get_edge_width(void)
Return the amount of padding in pixels which the get_buffer callback must provide around the edge of ...
Definition: utils.c:194
const char * av_color_space_name(enum AVColorSpace space)
Definition: pixdesc.c:2663
Macro definitions for various function/variable attributes.
FF_DISABLE_DEPRECATION_WARNINGS void av_log_missing_feature(void *avc, const char *feature, int want_sample)
Log a generic warning message about a missing feature.
Definition: utils.c:3797
static void * codec_mutex
Definition: utils.c:117
int frame_size
Audio only.
Definition: avcodec.h:4146
Mastering display metadata (based on SMPTE-2086:2014).
Definition: avcodec.h:1547
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avcodec.h:1827
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:672
AVSubtitleRect ** rects
Definition: avcodec.h:4006
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:2517
void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
Definition: utils.c:4007
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:475
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:1349
planar YUV 4:2:0 22.5bpp, (1 Cr & Cb sample per 2x2 Y & A samples), little-endian ...
Definition: pixfmt.h:191
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
Modify width and height values so that they will result in a memory buffer that is acceptable for the...
Definition: utils.c:437
#define FF_LEVEL_UNKNOWN
Definition: avcodec.h:3295
struct AVHWAccel * hwaccel
Hardware accelerator in use.
Definition: avcodec.h:3011
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:992
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
planar GBRA 4:4:4:4 64bpp, big-endian
Definition: pixfmt.h:230
Public dictionary API.
planar YUV 4:2:0 40bpp, (1 Cr & Cb sample per 2x2 Y & A samples, big-endian)
Definition: pixfmt.h