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utils.c
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1 /*
2  * utils for libavcodec
3  * Copyright (c) 2001 Fabrice Bellard
4  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 /**
24  * @file
25  * utils.
26  */
27 
28 #include "config.h"
29 #include "libavutil/atomic.h"
30 #include "libavutil/attributes.h"
31 #include "libavutil/avassert.h"
32 #include "libavutil/avstring.h"
33 #include "libavutil/bprint.h"
35 #include "libavutil/crc.h"
36 #include "libavutil/frame.h"
37 #include "libavutil/hwcontext.h"
38 #include "libavutil/internal.h"
39 #include "libavutil/mathematics.h"
40 #include "libavutil/mem_internal.h"
41 #include "libavutil/pixdesc.h"
42 #include "libavutil/imgutils.h"
43 #include "libavutil/samplefmt.h"
44 #include "libavutil/dict.h"
45 #include "libavutil/thread.h"
46 #include "avcodec.h"
47 #include "libavutil/opt.h"
48 #include "me_cmp.h"
49 #include "mpegvideo.h"
50 #include "thread.h"
51 #include "frame_thread_encoder.h"
52 #include "internal.h"
53 #include "raw.h"
54 #include "bytestream.h"
55 #include "version.h"
56 #include <stdlib.h>
57 #include <stdarg.h>
58 #include <limits.h>
59 #include <float.h>
60 #if CONFIG_ICONV
61 # include <iconv.h>
62 #endif
63 
64 #include "libavutil/ffversion.h"
65 const char av_codec_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
66 
67 #if HAVE_PTHREADS || HAVE_W32THREADS || HAVE_OS2THREADS
68 static int default_lockmgr_cb(void **arg, enum AVLockOp op)
69 {
70  void * volatile * mutex = arg;
71  int err;
72 
73  switch (op) {
74  case AV_LOCK_CREATE:
75  return 0;
76  case AV_LOCK_OBTAIN:
77  if (!*mutex) {
79  if (!tmp)
80  return AVERROR(ENOMEM);
81  if ((err = pthread_mutex_init(tmp, NULL))) {
82  av_free(tmp);
83  return AVERROR(err);
84  }
85  if (avpriv_atomic_ptr_cas(mutex, NULL, tmp)) {
87  av_free(tmp);
88  }
89  }
90 
91  if ((err = pthread_mutex_lock(*mutex)))
92  return AVERROR(err);
93 
94  return 0;
95  case AV_LOCK_RELEASE:
96  if ((err = pthread_mutex_unlock(*mutex)))
97  return AVERROR(err);
98 
99  return 0;
100  case AV_LOCK_DESTROY:
101  if (*mutex)
102  pthread_mutex_destroy(*mutex);
103  av_free(*mutex);
104  avpriv_atomic_ptr_cas(mutex, *mutex, NULL);
105  return 0;
106  }
107  return 1;
108 }
109 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = default_lockmgr_cb;
110 #else
111 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = NULL;
112 #endif
113 
114 
115 volatile int ff_avcodec_locked;
116 static int volatile entangled_thread_counter = 0;
117 static void *codec_mutex;
118 static void *avformat_mutex;
119 
120 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
121 {
122  uint8_t **p = ptr;
123  if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
124  av_freep(p);
125  *size = 0;
126  return;
127  }
128  if (!ff_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE, 1))
129  memset(*p + min_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
130 }
131 
132 void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size)
133 {
134  uint8_t **p = ptr;
135  if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
136  av_freep(p);
137  *size = 0;
138  return;
139  }
140  if (!ff_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE, 1))
141  memset(*p, 0, min_size + AV_INPUT_BUFFER_PADDING_SIZE);
142 }
143 
144 /* encoder management */
147 
149 {
150  if (c)
151  return c->next;
152  else
153  return first_avcodec;
154 }
155 
156 static av_cold void avcodec_init(void)
157 {
158  static int initialized = 0;
159 
160  if (initialized != 0)
161  return;
162  initialized = 1;
163 
164  if (CONFIG_ME_CMP)
166 }
167 
168 int av_codec_is_encoder(const AVCodec *codec)
169 {
170  return codec && (codec->encode_sub || codec->encode2 ||codec->send_frame);
171 }
172 
173 int av_codec_is_decoder(const AVCodec *codec)
174 {
175  return codec && (codec->decode || codec->send_packet);
176 }
177 
179 {
180  AVCodec **p;
181  avcodec_init();
182  p = last_avcodec;
183  codec->next = NULL;
184 
185  while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, codec))
186  p = &(*p)->next;
187  last_avcodec = &codec->next;
188 
189  if (codec->init_static_data)
190  codec->init_static_data(codec);
191 }
192 
193 #if FF_API_EMU_EDGE
195 {
196  return EDGE_WIDTH;
197 }
198 #endif
199 
200 #if FF_API_SET_DIMENSIONS
202 {
203  int ret = ff_set_dimensions(s, width, height);
204  if (ret < 0) {
205  av_log(s, AV_LOG_WARNING, "Failed to set dimensions %d %d\n", width, height);
206  }
207 }
208 #endif
209 
211 {
212  int ret = av_image_check_size(width, height, 0, s);
213 
214  if (ret < 0)
215  width = height = 0;
216 
217  s->coded_width = width;
218  s->coded_height = height;
219  s->width = AV_CEIL_RSHIFT(width, s->lowres);
220  s->height = AV_CEIL_RSHIFT(height, s->lowres);
221 
222  return ret;
223 }
224 
226 {
227  int ret = av_image_check_sar(avctx->width, avctx->height, sar);
228 
229  if (ret < 0) {
230  av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %d/%d\n",
231  sar.num, sar.den);
232  avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
233  return ret;
234  } else {
235  avctx->sample_aspect_ratio = sar;
236  }
237  return 0;
238 }
239 
241  enum AVMatrixEncoding matrix_encoding)
242 {
243  AVFrameSideData *side_data;
244  enum AVMatrixEncoding *data;
245 
247  if (!side_data)
249  sizeof(enum AVMatrixEncoding));
250 
251  if (!side_data)
252  return AVERROR(ENOMEM);
253 
254  data = (enum AVMatrixEncoding*)side_data->data;
255  *data = matrix_encoding;
256 
257  return 0;
258 }
259 
261  int linesize_align[AV_NUM_DATA_POINTERS])
262 {
263  int i;
264  int w_align = 1;
265  int h_align = 1;
267 
268  if (desc) {
269  w_align = 1 << desc->log2_chroma_w;
270  h_align = 1 << desc->log2_chroma_h;
271  }
272 
273  switch (s->pix_fmt) {
274  case AV_PIX_FMT_YUV420P:
275  case AV_PIX_FMT_YUYV422:
276  case AV_PIX_FMT_YVYU422:
277  case AV_PIX_FMT_UYVY422:
278  case AV_PIX_FMT_YUV422P:
279  case AV_PIX_FMT_YUV440P:
280  case AV_PIX_FMT_YUV444P:
281  case AV_PIX_FMT_GBRP:
282  case AV_PIX_FMT_GBRAP:
283  case AV_PIX_FMT_GRAY8:
284  case AV_PIX_FMT_GRAY16BE:
285  case AV_PIX_FMT_GRAY16LE:
286  case AV_PIX_FMT_YUVJ420P:
287  case AV_PIX_FMT_YUVJ422P:
288  case AV_PIX_FMT_YUVJ440P:
289  case AV_PIX_FMT_YUVJ444P:
290  case AV_PIX_FMT_YUVA420P:
291  case AV_PIX_FMT_YUVA422P:
292  case AV_PIX_FMT_YUVA444P:
345  case AV_PIX_FMT_GBRP9LE:
346  case AV_PIX_FMT_GBRP9BE:
347  case AV_PIX_FMT_GBRP10LE:
348  case AV_PIX_FMT_GBRP10BE:
349  case AV_PIX_FMT_GBRP12LE:
350  case AV_PIX_FMT_GBRP12BE:
351  case AV_PIX_FMT_GBRP14LE:
352  case AV_PIX_FMT_GBRP14BE:
353  case AV_PIX_FMT_GBRP16LE:
354  case AV_PIX_FMT_GBRP16BE:
359  w_align = 16; //FIXME assume 16 pixel per macroblock
360  h_align = 16 * 2; // interlaced needs 2 macroblocks height
361  break;
362  case AV_PIX_FMT_YUV411P:
363  case AV_PIX_FMT_YUVJ411P:
365  w_align = 32;
366  h_align = 16 * 2;
367  break;
368  case AV_PIX_FMT_YUV410P:
369  if (s->codec_id == AV_CODEC_ID_SVQ1) {
370  w_align = 64;
371  h_align = 64;
372  }
373  break;
374  case AV_PIX_FMT_RGB555:
375  if (s->codec_id == AV_CODEC_ID_RPZA) {
376  w_align = 4;
377  h_align = 4;
378  }
379  break;
380  case AV_PIX_FMT_PAL8:
381  case AV_PIX_FMT_BGR8:
382  case AV_PIX_FMT_RGB8:
383  if (s->codec_id == AV_CODEC_ID_SMC ||
385  w_align = 4;
386  h_align = 4;
387  }
388  if (s->codec_id == AV_CODEC_ID_JV) {
389  w_align = 8;
390  h_align = 8;
391  }
392  break;
393  case AV_PIX_FMT_BGR24:
394  if ((s->codec_id == AV_CODEC_ID_MSZH) ||
395  (s->codec_id == AV_CODEC_ID_ZLIB)) {
396  w_align = 4;
397  h_align = 4;
398  }
399  break;
400  case AV_PIX_FMT_RGB24:
401  if (s->codec_id == AV_CODEC_ID_CINEPAK) {
402  w_align = 4;
403  h_align = 4;
404  }
405  break;
406  default:
407  break;
408  }
409 
410  if (s->codec_id == AV_CODEC_ID_IFF_ILBM) {
411  w_align = FFMAX(w_align, 8);
412  }
413 
414  *width = FFALIGN(*width, w_align);
415  *height = FFALIGN(*height, h_align);
416  if (s->codec_id == AV_CODEC_ID_H264 || s->lowres) {
417  // some of the optimized chroma MC reads one line too much
418  // which is also done in mpeg decoders with lowres > 0
419  *height += 2;
420 
421  // H.264 uses edge emulation for out of frame motion vectors, for this
422  // it requires a temporary area large enough to hold a 21x21 block,
423  // increasing witdth ensure that the temporary area is large enough,
424  // the next rounded up width is 32
425  *width = FFMAX(*width, 32);
426  }
427 
428  for (i = 0; i < 4; i++)
429  linesize_align[i] = STRIDE_ALIGN;
430 }
431 
433 {
435  int chroma_shift = desc->log2_chroma_w;
436  int linesize_align[AV_NUM_DATA_POINTERS];
437  int align;
438 
439  avcodec_align_dimensions2(s, width, height, linesize_align);
440  align = FFMAX(linesize_align[0], linesize_align[3]);
441  linesize_align[1] <<= chroma_shift;
442  linesize_align[2] <<= chroma_shift;
443  align = FFMAX3(align, linesize_align[1], linesize_align[2]);
444  *width = FFALIGN(*width, align);
445 }
446 
447 int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
448 {
449  if (pos <= AVCHROMA_LOC_UNSPECIFIED || pos >= AVCHROMA_LOC_NB)
450  return AVERROR(EINVAL);
451  pos--;
452 
453  *xpos = (pos&1) * 128;
454  *ypos = ((pos>>1)^(pos<4)) * 128;
455 
456  return 0;
457 }
458 
460 {
461  int pos, xout, yout;
462 
463  for (pos = AVCHROMA_LOC_UNSPECIFIED + 1; pos < AVCHROMA_LOC_NB; pos++) {
464  if (avcodec_enum_to_chroma_pos(&xout, &yout, pos) == 0 && xout == xpos && yout == ypos)
465  return pos;
466  }
468 }
469 
471  enum AVSampleFormat sample_fmt, const uint8_t *buf,
472  int buf_size, int align)
473 {
474  int ch, planar, needed_size, ret = 0;
475 
476  needed_size = av_samples_get_buffer_size(NULL, nb_channels,
477  frame->nb_samples, sample_fmt,
478  align);
479  if (buf_size < needed_size)
480  return AVERROR(EINVAL);
481 
482  planar = av_sample_fmt_is_planar(sample_fmt);
483  if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
484  if (!(frame->extended_data = av_mallocz_array(nb_channels,
485  sizeof(*frame->extended_data))))
486  return AVERROR(ENOMEM);
487  } else {
488  frame->extended_data = frame->data;
489  }
490 
491  if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
492  (uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
493  sample_fmt, align)) < 0) {
494  if (frame->extended_data != frame->data)
495  av_freep(&frame->extended_data);
496  return ret;
497  }
498  if (frame->extended_data != frame->data) {
499  for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
500  frame->data[ch] = frame->extended_data[ch];
501  }
502 
503  return ret;
504 }
505 
507 {
508  FramePool *pool = avctx->internal->pool;
509  int i, ret;
510 
511  switch (avctx->codec_type) {
512  case AVMEDIA_TYPE_VIDEO: {
513  uint8_t *data[4];
514  int linesize[4];
515  int size[4] = { 0 };
516  int w = frame->width;
517  int h = frame->height;
518  int tmpsize, unaligned;
519 
520  if (pool->format == frame->format &&
521  pool->width == frame->width && pool->height == frame->height)
522  return 0;
523 
524  avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
525 
526  do {
527  // NOTE: do not align linesizes individually, this breaks e.g. assumptions
528  // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
529  ret = av_image_fill_linesizes(linesize, avctx->pix_fmt, w);
530  if (ret < 0)
531  return ret;
532  // increase alignment of w for next try (rhs gives the lowest bit set in w)
533  w += w & ~(w - 1);
534 
535  unaligned = 0;
536  for (i = 0; i < 4; i++)
537  unaligned |= linesize[i] % pool->stride_align[i];
538  } while (unaligned);
539 
540  tmpsize = av_image_fill_pointers(data, avctx->pix_fmt, h,
541  NULL, linesize);
542  if (tmpsize < 0)
543  return -1;
544 
545  for (i = 0; i < 3 && data[i + 1]; i++)
546  size[i] = data[i + 1] - data[i];
547  size[i] = tmpsize - (data[i] - data[0]);
548 
549  for (i = 0; i < 4; i++) {
550  av_buffer_pool_uninit(&pool->pools[i]);
551  pool->linesize[i] = linesize[i];
552  if (size[i]) {
553  pool->pools[i] = av_buffer_pool_init(size[i] + 16 + STRIDE_ALIGN - 1,
554  CONFIG_MEMORY_POISONING ?
555  NULL :
557  if (!pool->pools[i]) {
558  ret = AVERROR(ENOMEM);
559  goto fail;
560  }
561  }
562  }
563  pool->format = frame->format;
564  pool->width = frame->width;
565  pool->height = frame->height;
566 
567  break;
568  }
569  case AVMEDIA_TYPE_AUDIO: {
570  int ch = av_frame_get_channels(frame); //av_get_channel_layout_nb_channels(frame->channel_layout);
571  int planar = av_sample_fmt_is_planar(frame->format);
572  int planes = planar ? ch : 1;
573 
574  if (pool->format == frame->format && pool->planes == planes &&
575  pool->channels == ch && frame->nb_samples == pool->samples)
576  return 0;
577 
578  av_buffer_pool_uninit(&pool->pools[0]);
579  ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
580  frame->nb_samples, frame->format, 0);
581  if (ret < 0)
582  goto fail;
583 
584  pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
585  if (!pool->pools[0]) {
586  ret = AVERROR(ENOMEM);
587  goto fail;
588  }
589 
590  pool->format = frame->format;
591  pool->planes = planes;
592  pool->channels = ch;
593  pool->samples = frame->nb_samples;
594  break;
595  }
596  default: av_assert0(0);
597  }
598  return 0;
599 fail:
600  for (i = 0; i < 4; i++)
601  av_buffer_pool_uninit(&pool->pools[i]);
602  pool->format = -1;
603  pool->planes = pool->channels = pool->samples = 0;
604  pool->width = pool->height = 0;
605  return ret;
606 }
607 
609 {
610  FramePool *pool = avctx->internal->pool;
611  int planes = pool->planes;
612  int i;
613 
614  frame->linesize[0] = pool->linesize[0];
615 
616  if (planes > AV_NUM_DATA_POINTERS) {
617  frame->extended_data = av_mallocz_array(planes, sizeof(*frame->extended_data));
618  frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
620  sizeof(*frame->extended_buf));
621  if (!frame->extended_data || !frame->extended_buf) {
622  av_freep(&frame->extended_data);
623  av_freep(&frame->extended_buf);
624  return AVERROR(ENOMEM);
625  }
626  } else {
627  frame->extended_data = frame->data;
628  av_assert0(frame->nb_extended_buf == 0);
629  }
630 
631  for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
632  frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
633  if (!frame->buf[i])
634  goto fail;
635  frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
636  }
637  for (i = 0; i < frame->nb_extended_buf; i++) {
638  frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
639  if (!frame->extended_buf[i])
640  goto fail;
641  frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
642  }
643 
644  if (avctx->debug & FF_DEBUG_BUFFERS)
645  av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
646 
647  return 0;
648 fail:
649  av_frame_unref(frame);
650  return AVERROR(ENOMEM);
651 }
652 
654 {
655  FramePool *pool = s->internal->pool;
657  int i;
658 
659  if (pic->data[0] || pic->data[1] || pic->data[2] || pic->data[3]) {
660  av_log(s, AV_LOG_ERROR, "pic->data[*]!=NULL in avcodec_default_get_buffer\n");
661  return -1;
662  }
663 
664  if (!desc) {
665  av_log(s, AV_LOG_ERROR,
666  "Unable to get pixel format descriptor for format %s\n",
668  return AVERROR(EINVAL);
669  }
670 
671  memset(pic->data, 0, sizeof(pic->data));
672  pic->extended_data = pic->data;
673 
674  for (i = 0; i < 4 && pool->pools[i]; i++) {
675  pic->linesize[i] = pool->linesize[i];
676 
677  pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
678  if (!pic->buf[i])
679  goto fail;
680 
681  pic->data[i] = pic->buf[i]->data;
682  }
683  for (; i < AV_NUM_DATA_POINTERS; i++) {
684  pic->data[i] = NULL;
685  pic->linesize[i] = 0;
686  }
687  if (desc->flags & AV_PIX_FMT_FLAG_PAL ||
689  avpriv_set_systematic_pal2((uint32_t *)pic->data[1], pic->format);
690 
691  if (s->debug & FF_DEBUG_BUFFERS)
692  av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
693 
694  return 0;
695 fail:
696  av_frame_unref(pic);
697  return AVERROR(ENOMEM);
698 }
699 
700 void ff_color_frame(AVFrame *frame, const int c[4])
701 {
703  int p, y, x;
704 
706 
707  for (p = 0; p<desc->nb_components; p++) {
708  uint8_t *dst = frame->data[p];
709  int is_chroma = p == 1 || p == 2;
710  int bytes = is_chroma ? AV_CEIL_RSHIFT(frame->width, desc->log2_chroma_w) : frame->width;
711  int height = is_chroma ? AV_CEIL_RSHIFT(frame->height, desc->log2_chroma_h) : frame->height;
712  for (y = 0; y < height; y++) {
713  if (desc->comp[0].depth >= 9) {
714  for (x = 0; x<bytes; x++)
715  ((uint16_t*)dst)[x] = c[p];
716  }else
717  memset(dst, c[p], bytes);
718  dst += frame->linesize[p];
719  }
720  }
721 }
722 
724 {
725  int ret;
726 
727  if (avctx->hw_frames_ctx)
728  return av_hwframe_get_buffer(avctx->hw_frames_ctx, frame, 0);
729 
730  if ((ret = update_frame_pool(avctx, frame)) < 0)
731  return ret;
732 
733  switch (avctx->codec_type) {
734  case AVMEDIA_TYPE_VIDEO:
735  return video_get_buffer(avctx, frame);
736  case AVMEDIA_TYPE_AUDIO:
737  return audio_get_buffer(avctx, frame);
738  default:
739  return -1;
740  }
741 }
742 
744 {
745  int size;
746  const uint8_t *side_metadata;
747 
748  AVDictionary **frame_md = avpriv_frame_get_metadatap(frame);
749 
750  side_metadata = av_packet_get_side_data(avpkt,
752  return av_packet_unpack_dictionary(side_metadata, size, frame_md);
753 }
754 
756 {
757  AVPacket *pkt = avctx->internal->pkt;
758  int i;
759  static const struct {
760  enum AVPacketSideDataType packet;
762  } sd[] = {
768  };
769 
770  if (pkt) {
771  frame->pts = pkt->pts;
772 #if FF_API_PKT_PTS
774  frame->pkt_pts = pkt->pts;
776 #endif
777  av_frame_set_pkt_pos (frame, pkt->pos);
778  av_frame_set_pkt_duration(frame, pkt->duration);
779  av_frame_set_pkt_size (frame, pkt->size);
780 
781  for (i = 0; i < FF_ARRAY_ELEMS(sd); i++) {
782  int size;
783  uint8_t *packet_sd = av_packet_get_side_data(pkt, sd[i].packet, &size);
784  if (packet_sd) {
785  AVFrameSideData *frame_sd = av_frame_new_side_data(frame,
786  sd[i].frame,
787  size);
788  if (!frame_sd)
789  return AVERROR(ENOMEM);
790 
791  memcpy(frame_sd->data, packet_sd, size);
792  }
793  }
794  add_metadata_from_side_data(pkt, frame);
795 
796  if (pkt->flags & AV_PKT_FLAG_DISCARD) {
797  frame->flags |= AV_FRAME_FLAG_DISCARD;
798  } else {
799  frame->flags = (frame->flags & ~AV_FRAME_FLAG_DISCARD);
800  }
801  } else {
802  frame->pts = AV_NOPTS_VALUE;
803 #if FF_API_PKT_PTS
805  frame->pkt_pts = AV_NOPTS_VALUE;
807 #endif
808  av_frame_set_pkt_pos (frame, -1);
809  av_frame_set_pkt_duration(frame, 0);
810  av_frame_set_pkt_size (frame, -1);
811  }
812  frame->reordered_opaque = avctx->reordered_opaque;
813 
815  frame->color_primaries = avctx->color_primaries;
816  if (frame->color_trc == AVCOL_TRC_UNSPECIFIED)
817  frame->color_trc = avctx->color_trc;
819  av_frame_set_colorspace(frame, avctx->colorspace);
821  av_frame_set_color_range(frame, avctx->color_range);
823  frame->chroma_location = avctx->chroma_sample_location;
824 
825  switch (avctx->codec->type) {
826  case AVMEDIA_TYPE_VIDEO:
827  frame->format = avctx->pix_fmt;
828  if (!frame->sample_aspect_ratio.num)
830 
831  if (frame->width && frame->height &&
832  av_image_check_sar(frame->width, frame->height,
833  frame->sample_aspect_ratio) < 0) {
834  av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
835  frame->sample_aspect_ratio.num,
836  frame->sample_aspect_ratio.den);
837  frame->sample_aspect_ratio = (AVRational){ 0, 1 };
838  }
839 
840  break;
841  case AVMEDIA_TYPE_AUDIO:
842  if (!frame->sample_rate)
843  frame->sample_rate = avctx->sample_rate;
844  if (frame->format < 0)
845  frame->format = avctx->sample_fmt;
846  if (!frame->channel_layout) {
847  if (avctx->channel_layout) {
849  avctx->channels) {
850  av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
851  "configuration.\n");
852  return AVERROR(EINVAL);
853  }
854 
855  frame->channel_layout = avctx->channel_layout;
856  } else {
857  if (avctx->channels > FF_SANE_NB_CHANNELS) {
858  av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
859  avctx->channels);
860  return AVERROR(ENOSYS);
861  }
862  }
863  }
864  av_frame_set_channels(frame, avctx->channels);
865  break;
866  }
867  return 0;
868 }
869 
871 {
872  return ff_init_buffer_info(avctx, frame);
873 }
874 
876 {
877  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
878  int i;
879  int num_planes = av_pix_fmt_count_planes(frame->format);
881  int flags = desc ? desc->flags : 0;
882  if (num_planes == 1 && (flags & AV_PIX_FMT_FLAG_PAL))
883  num_planes = 2;
884  for (i = 0; i < num_planes; i++) {
885  av_assert0(frame->data[i]);
886  }
887  // For now do not enforce anything for palette of pseudopal formats
888  if (num_planes == 1 && (flags & AV_PIX_FMT_FLAG_PSEUDOPAL))
889  num_planes = 2;
890  // For formats without data like hwaccel allow unused pointers to be non-NULL.
891  for (i = num_planes; num_planes > 0 && i < FF_ARRAY_ELEMS(frame->data); i++) {
892  if (frame->data[i])
893  av_log(avctx, AV_LOG_ERROR, "Buffer returned by get_buffer2() did not zero unused plane pointers\n");
894  frame->data[i] = NULL;
895  }
896  }
897 }
898 
900 {
901  const AVHWAccel *hwaccel = avctx->hwaccel;
902  int override_dimensions = 1;
903  int ret;
904 
905  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
906  if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0 || avctx->pix_fmt<0) {
907  av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
908  return AVERROR(EINVAL);
909  }
910 
911  if (frame->width <= 0 || frame->height <= 0) {
912  frame->width = FFMAX(avctx->width, AV_CEIL_RSHIFT(avctx->coded_width, avctx->lowres));
913  frame->height = FFMAX(avctx->height, AV_CEIL_RSHIFT(avctx->coded_height, avctx->lowres));
914  override_dimensions = 0;
915  }
916 
917  if (frame->data[0] || frame->data[1] || frame->data[2] || frame->data[3]) {
918  av_log(avctx, AV_LOG_ERROR, "pic->data[*]!=NULL in get_buffer_internal\n");
919  return AVERROR(EINVAL);
920  }
921  }
922  ret = ff_decode_frame_props(avctx, frame);
923  if (ret < 0)
924  return ret;
925 
926  if (hwaccel) {
927  if (hwaccel->alloc_frame) {
928  ret = hwaccel->alloc_frame(avctx, frame);
929  goto end;
930  }
931  } else
932  avctx->sw_pix_fmt = avctx->pix_fmt;
933 
934  ret = avctx->get_buffer2(avctx, frame, flags);
935  if (ret >= 0)
936  validate_avframe_allocation(avctx, frame);
937 
938 end:
939  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions) {
940  frame->width = avctx->width;
941  frame->height = avctx->height;
942  }
943 
944  return ret;
945 }
946 
948 {
949  int ret = get_buffer_internal(avctx, frame, flags);
950  if (ret < 0) {
951  av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
952  frame->width = frame->height = 0;
953  }
954  return ret;
955 }
956 
958 {
959  AVFrame *tmp;
960  int ret;
961 
963 
964  if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
965  av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
966  frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt));
967  av_frame_unref(frame);
968  }
969 
970  ff_init_buffer_info(avctx, frame);
971 
972  if (!frame->data[0])
973  return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
974 
975  if (av_frame_is_writable(frame))
976  return ff_decode_frame_props(avctx, frame);
977 
978  tmp = av_frame_alloc();
979  if (!tmp)
980  return AVERROR(ENOMEM);
981 
982  av_frame_move_ref(tmp, frame);
983 
984  ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
985  if (ret < 0) {
986  av_frame_free(&tmp);
987  return ret;
988  }
989 
990  av_frame_copy(frame, tmp);
991  av_frame_free(&tmp);
992 
993  return 0;
994 }
995 
997 {
998  int ret = reget_buffer_internal(avctx, frame);
999  if (ret < 0)
1000  av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
1001  return ret;
1002 }
1003 
1004 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
1005 {
1006  int i;
1007 
1008  for (i = 0; i < count; i++) {
1009  int r = func(c, (char *)arg + i * size);
1010  if (ret)
1011  ret[i] = r;
1012  }
1013  emms_c();
1014  return 0;
1015 }
1016 
1017 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
1018 {
1019  int i;
1020 
1021  for (i = 0; i < count; i++) {
1022  int r = func(c, arg, i, 0);
1023  if (ret)
1024  ret[i] = r;
1025  }
1026  emms_c();
1027  return 0;
1028 }
1029 
1031  unsigned int fourcc)
1032 {
1033  while (tags->pix_fmt >= 0) {
1034  if (tags->fourcc == fourcc)
1035  return tags->pix_fmt;
1036  tags++;
1037  }
1038  return AV_PIX_FMT_NONE;
1039 }
1040 
1042 {
1043  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
1044  return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
1045 }
1046 
1048 {
1049  while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
1050  ++fmt;
1051  return fmt[0];
1052 }
1053 
1055  enum AVPixelFormat pix_fmt)
1056 {
1057  AVHWAccel *hwaccel = NULL;
1058 
1059  while ((hwaccel = av_hwaccel_next(hwaccel)))
1060  if (hwaccel->id == codec_id
1061  && hwaccel->pix_fmt == pix_fmt)
1062  return hwaccel;
1063  return NULL;
1064 }
1065 
1066 static int setup_hwaccel(AVCodecContext *avctx,
1067  const enum AVPixelFormat fmt,
1068  const char *name)
1069 {
1070  AVHWAccel *hwa = find_hwaccel(avctx->codec_id, fmt);
1071  int ret = 0;
1072 
1073  if (avctx->active_thread_type & FF_THREAD_FRAME) {
1074  av_log(avctx, AV_LOG_WARNING,
1075  "Hardware accelerated decoding with frame threading is known to be unstable and its use is discouraged.\n");
1076  }
1077 
1078  if (!hwa) {
1079  av_log(avctx, AV_LOG_ERROR,
1080  "Could not find an AVHWAccel for the pixel format: %s",
1081  name);
1082  return AVERROR(ENOENT);
1083  }
1084 
1087  av_log(avctx, AV_LOG_WARNING, "Ignoring experimental hwaccel: %s\n",
1088  hwa->name);
1089  return AVERROR_PATCHWELCOME;
1090  }
1091 
1092  if (hwa->priv_data_size) {
1094  if (!avctx->internal->hwaccel_priv_data)
1095  return AVERROR(ENOMEM);
1096  }
1097 
1098  if (hwa->init) {
1099  ret = hwa->init(avctx);
1100  if (ret < 0) {
1102  return ret;
1103  }
1104  }
1105 
1106  avctx->hwaccel = hwa;
1107 
1108  return 0;
1109 }
1110 
1112 {
1113  const AVPixFmtDescriptor *desc;
1114  enum AVPixelFormat *choices;
1115  enum AVPixelFormat ret;
1116  unsigned n = 0;
1117 
1118  while (fmt[n] != AV_PIX_FMT_NONE)
1119  ++n;
1120 
1121  av_assert0(n >= 1);
1122  avctx->sw_pix_fmt = fmt[n - 1];
1124 
1125  choices = av_malloc_array(n + 1, sizeof(*choices));
1126  if (!choices)
1127  return AV_PIX_FMT_NONE;
1128 
1129  memcpy(choices, fmt, (n + 1) * sizeof(*choices));
1130 
1131  for (;;) {
1132  if (avctx->hwaccel && avctx->hwaccel->uninit)
1133  avctx->hwaccel->uninit(avctx);
1135  avctx->hwaccel = NULL;
1136 
1137  av_buffer_unref(&avctx->hw_frames_ctx);
1138 
1139  ret = avctx->get_format(avctx, choices);
1140 
1141  desc = av_pix_fmt_desc_get(ret);
1142  if (!desc) {
1143  ret = AV_PIX_FMT_NONE;
1144  break;
1145  }
1146 
1147  if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
1148  break;
1149 #if FF_API_CAP_VDPAU
1151  break;
1152 #endif
1153 
1154  if (avctx->hw_frames_ctx) {
1155  AVHWFramesContext *hw_frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
1156  if (hw_frames_ctx->format != ret) {
1157  av_log(avctx, AV_LOG_ERROR, "Format returned from get_buffer() "
1158  "does not match the format of provided AVHWFramesContext\n");
1159  ret = AV_PIX_FMT_NONE;
1160  break;
1161  }
1162  }
1163 
1164  if (!setup_hwaccel(avctx, ret, desc->name))
1165  break;
1166 
1167  /* Remove failed hwaccel from choices */
1168  for (n = 0; choices[n] != ret; n++)
1169  av_assert0(choices[n] != AV_PIX_FMT_NONE);
1170 
1171  do
1172  choices[n] = choices[n + 1];
1173  while (choices[n++] != AV_PIX_FMT_NONE);
1174  }
1175 
1176  av_freep(&choices);
1177  return ret;
1178 }
1179 
1180 MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
1181 MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor)
1182 MAKE_ACCESSORS(AVCodecContext, codec, int, lowres)
1183 MAKE_ACCESSORS(AVCodecContext, codec, int, seek_preroll)
1184 MAKE_ACCESSORS(AVCodecContext, codec, uint16_t*, chroma_intra_matrix)
1185 
1186 unsigned av_codec_get_codec_properties(const AVCodecContext *codec)
1187 {
1188  return codec->properties;
1189 }
1190 
1192 {
1193  return codec->max_lowres;
1194 }
1195 
1198 }
1199 
1201 {
1202  memset(sub, 0, sizeof(*sub));
1203  sub->pts = AV_NOPTS_VALUE;
1204 }
1205 
1207 {
1208  int64_t bit_rate;
1209  int bits_per_sample;
1210 
1211  switch (ctx->codec_type) {
1212  case AVMEDIA_TYPE_VIDEO:
1213  case AVMEDIA_TYPE_DATA:
1214  case AVMEDIA_TYPE_SUBTITLE:
1216  bit_rate = ctx->bit_rate;
1217  break;
1218  case AVMEDIA_TYPE_AUDIO:
1219  bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1220  bit_rate = bits_per_sample ? ctx->sample_rate * (int64_t)ctx->channels * bits_per_sample : ctx->bit_rate;
1221  break;
1222  default:
1223  bit_rate = 0;
1224  break;
1225  }
1226  return bit_rate;
1227 }
1228 
1229 int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1230 {
1231  int ret = 0;
1232 
1233  ff_unlock_avcodec(codec);
1234 
1235  ret = avcodec_open2(avctx, codec, options);
1236 
1237  ff_lock_avcodec(avctx, codec);
1238  return ret;
1239 }
1240 
1241 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1242 {
1243  int ret = 0;
1244  AVDictionary *tmp = NULL;
1245  const AVPixFmtDescriptor *pixdesc;
1246 
1247  if (avcodec_is_open(avctx))
1248  return 0;
1249 
1250  if ((!codec && !avctx->codec)) {
1251  av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
1252  return AVERROR(EINVAL);
1253  }
1254  if ((codec && avctx->codec && codec != avctx->codec)) {
1255  av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
1256  "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
1257  return AVERROR(EINVAL);
1258  }
1259  if (!codec)
1260  codec = avctx->codec;
1261 
1262  if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
1263  return AVERROR(EINVAL);
1264 
1265  if (options)
1266  av_dict_copy(&tmp, *options, 0);
1267 
1268  ret = ff_lock_avcodec(avctx, codec);
1269  if (ret < 0)
1270  return ret;
1271 
1272  avctx->internal = av_mallocz(sizeof(AVCodecInternal));
1273  if (!avctx->internal) {
1274  ret = AVERROR(ENOMEM);
1275  goto end;
1276  }
1277 
1278  avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
1279  if (!avctx->internal->pool) {
1280  ret = AVERROR(ENOMEM);
1281  goto free_and_end;
1282  }
1283 
1284  avctx->internal->to_free = av_frame_alloc();
1285  if (!avctx->internal->to_free) {
1286  ret = AVERROR(ENOMEM);
1287  goto free_and_end;
1288  }
1289 
1290  avctx->internal->buffer_frame = av_frame_alloc();
1291  if (!avctx->internal->buffer_frame) {
1292  ret = AVERROR(ENOMEM);
1293  goto free_and_end;
1294  }
1295 
1296  avctx->internal->buffer_pkt = av_packet_alloc();
1297  if (!avctx->internal->buffer_pkt) {
1298  ret = AVERROR(ENOMEM);
1299  goto free_and_end;
1300  }
1301 
1302  if (codec->priv_data_size > 0) {
1303  if (!avctx->priv_data) {
1304  avctx->priv_data = av_mallocz(codec->priv_data_size);
1305  if (!avctx->priv_data) {
1306  ret = AVERROR(ENOMEM);
1307  goto end;
1308  }
1309  if (codec->priv_class) {
1310  *(const AVClass **)avctx->priv_data = codec->priv_class;
1312  }
1313  }
1314  if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
1315  goto free_and_end;
1316  } else {
1317  avctx->priv_data = NULL;
1318  }
1319  if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
1320  goto free_and_end;
1321 
1322  if (avctx->codec_whitelist && av_match_list(codec->name, avctx->codec_whitelist, ',') <= 0) {
1323  av_log(avctx, AV_LOG_ERROR, "Codec (%s) not on whitelist \'%s\'\n", codec->name, avctx->codec_whitelist);
1324  ret = AVERROR(EINVAL);
1325  goto free_and_end;
1326  }
1327 
1328  // only call ff_set_dimensions() for non H.264/VP6F/DXV codecs so as not to overwrite previously setup dimensions
1329  if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
1330  (avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F || avctx->codec_id == AV_CODEC_ID_DXV))) {
1331  if (avctx->coded_width && avctx->coded_height)
1332  ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
1333  else if (avctx->width && avctx->height)
1334  ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
1335  if (ret < 0)
1336  goto free_and_end;
1337  }
1338 
1339  if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
1340  && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
1341  || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
1342  av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
1343  ff_set_dimensions(avctx, 0, 0);
1344  }
1345 
1346  if (avctx->width > 0 && avctx->height > 0) {
1347  if (av_image_check_sar(avctx->width, avctx->height,
1348  avctx->sample_aspect_ratio) < 0) {
1349  av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
1350  avctx->sample_aspect_ratio.num,
1351  avctx->sample_aspect_ratio.den);
1352  avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
1353  }
1354  }
1355 
1356  /* if the decoder init function was already called previously,
1357  * free the already allocated subtitle_header before overwriting it */
1358  if (av_codec_is_decoder(codec))
1359  av_freep(&avctx->subtitle_header);
1360 
1361  if (avctx->channels > FF_SANE_NB_CHANNELS) {
1362  ret = AVERROR(EINVAL);
1363  goto free_and_end;
1364  }
1365 
1366  avctx->codec = codec;
1367  if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
1368  avctx->codec_id == AV_CODEC_ID_NONE) {
1369  avctx->codec_type = codec->type;
1370  avctx->codec_id = codec->id;
1371  }
1372  if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
1373  && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
1374  av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
1375  ret = AVERROR(EINVAL);
1376  goto free_and_end;
1377  }
1378  avctx->frame_number = 0;
1380 
1381  if ((avctx->codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) &&
1383  const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
1384  AVCodec *codec2;
1385  av_log(avctx, AV_LOG_ERROR,
1386  "The %s '%s' is experimental but experimental codecs are not enabled, "
1387  "add '-strict %d' if you want to use it.\n",
1388  codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
1389  codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
1390  if (!(codec2->capabilities & AV_CODEC_CAP_EXPERIMENTAL))
1391  av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
1392  codec_string, codec2->name);
1393  ret = AVERROR_EXPERIMENTAL;
1394  goto free_and_end;
1395  }
1396 
1397  if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
1398  (!avctx->time_base.num || !avctx->time_base.den)) {
1399  avctx->time_base.num = 1;
1400  avctx->time_base.den = avctx->sample_rate;
1401  }
1402 
1403  if (!HAVE_THREADS)
1404  av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
1405 
1406  if (CONFIG_FRAME_THREAD_ENCODER && av_codec_is_encoder(avctx->codec)) {
1407  ff_unlock_avcodec(codec); //we will instantiate a few encoders thus kick the counter to prevent false detection of a problem
1408  ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
1409  ff_lock_avcodec(avctx, codec);
1410  if (ret < 0)
1411  goto free_and_end;
1412  }
1413 
1414  if (HAVE_THREADS
1416  ret = ff_thread_init(avctx);
1417  if (ret < 0) {
1418  goto free_and_end;
1419  }
1420  }
1421  if (!HAVE_THREADS && !(codec->capabilities & AV_CODEC_CAP_AUTO_THREADS))
1422  avctx->thread_count = 1;
1423 
1424  if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
1425  av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
1426  avctx->codec->max_lowres);
1427  avctx->lowres = avctx->codec->max_lowres;
1428  }
1429 
1430 #if FF_API_VISMV
1431  if (avctx->debug_mv)
1432  av_log(avctx, AV_LOG_WARNING, "The 'vismv' option is deprecated, "
1433  "see the codecview filter instead.\n");
1434 #endif
1435 
1436  if (av_codec_is_encoder(avctx->codec)) {
1437  int i;
1438 #if FF_API_CODED_FRAME
1440  avctx->coded_frame = av_frame_alloc();
1441  if (!avctx->coded_frame) {
1442  ret = AVERROR(ENOMEM);
1443  goto free_and_end;
1444  }
1446 #endif
1447 
1448  if (avctx->time_base.num <= 0 || avctx->time_base.den <= 0) {
1449  av_log(avctx, AV_LOG_ERROR, "The encoder timebase is not set.\n");
1450  ret = AVERROR(EINVAL);
1451  goto free_and_end;
1452  }
1453 
1454  if (avctx->codec->sample_fmts) {
1455  for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
1456  if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
1457  break;
1458  if (avctx->channels == 1 &&
1461  avctx->sample_fmt = avctx->codec->sample_fmts[i];
1462  break;
1463  }
1464  }
1465  if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
1466  char buf[128];
1467  snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt);
1468  av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n",
1469  (char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf));
1470  ret = AVERROR(EINVAL);
1471  goto free_and_end;
1472  }
1473  }
1474  if (avctx->codec->pix_fmts) {
1475  for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
1476  if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
1477  break;
1478  if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE
1479  && !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG)
1481  char buf[128];
1482  snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt);
1483  av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n",
1484  (char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf));
1485  ret = AVERROR(EINVAL);
1486  goto free_and_end;
1487  }
1488  if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ420P ||
1489  avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ411P ||
1490  avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ422P ||
1491  avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ440P ||
1492  avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ444P)
1493  avctx->color_range = AVCOL_RANGE_JPEG;
1494  }
1495  if (avctx->codec->supported_samplerates) {
1496  for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
1497  if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
1498  break;
1499  if (avctx->codec->supported_samplerates[i] == 0) {
1500  av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
1501  avctx->sample_rate);
1502  ret = AVERROR(EINVAL);
1503  goto free_and_end;
1504  }
1505  }
1506  if (avctx->sample_rate < 0) {
1507  av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
1508  avctx->sample_rate);
1509  ret = AVERROR(EINVAL);
1510  goto free_and_end;
1511  }
1512  if (avctx->codec->channel_layouts) {
1513  if (!avctx->channel_layout) {
1514  av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n");
1515  } else {
1516  for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
1517  if (avctx->channel_layout == avctx->codec->channel_layouts[i])
1518  break;
1519  if (avctx->codec->channel_layouts[i] == 0) {
1520  char buf[512];
1521  av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1522  av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf);
1523  ret = AVERROR(EINVAL);
1524  goto free_and_end;
1525  }
1526  }
1527  }
1528  if (avctx->channel_layout && avctx->channels) {
1529  int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1530  if (channels != avctx->channels) {
1531  char buf[512];
1532  av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1533  av_log(avctx, AV_LOG_ERROR,
1534  "Channel layout '%s' with %d channels does not match number of specified channels %d\n",
1535  buf, channels, avctx->channels);
1536  ret = AVERROR(EINVAL);
1537  goto free_and_end;
1538  }
1539  } else if (avctx->channel_layout) {
1541  }
1542  if (avctx->channels < 0) {
1543  av_log(avctx, AV_LOG_ERROR, "Specified number of channels %d is not supported\n",
1544  avctx->channels);
1545  ret = AVERROR(EINVAL);
1546  goto free_and_end;
1547  }
1548  if(avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1549  pixdesc = av_pix_fmt_desc_get(avctx->pix_fmt);
1550  if ( avctx->bits_per_raw_sample < 0
1551  || (avctx->bits_per_raw_sample > 8 && pixdesc->comp[0].depth <= 8)) {
1552  av_log(avctx, AV_LOG_WARNING, "Specified bit depth %d not possible with the specified pixel formats depth %d\n",
1553  avctx->bits_per_raw_sample, pixdesc->comp[0].depth);
1554  avctx->bits_per_raw_sample = pixdesc->comp[0].depth;
1555  }
1556  if (avctx->width <= 0 || avctx->height <= 0) {
1557  av_log(avctx, AV_LOG_ERROR, "dimensions not set\n");
1558  ret = AVERROR(EINVAL);
1559  goto free_and_end;
1560  }
1561  }
1562  if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
1563  && avctx->bit_rate>0 && avctx->bit_rate<1000) {
1564  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);
1565  }
1566 
1567  if (!avctx->rc_initial_buffer_occupancy)
1568  avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
1569 
1570  if (avctx->ticks_per_frame && avctx->time_base.num &&
1571  avctx->ticks_per_frame > INT_MAX / avctx->time_base.num) {
1572  av_log(avctx, AV_LOG_ERROR,
1573  "ticks_per_frame %d too large for the timebase %d/%d.",
1574  avctx->ticks_per_frame,
1575  avctx->time_base.num,
1576  avctx->time_base.den);
1577  goto free_and_end;
1578  }
1579 
1580  if (avctx->hw_frames_ctx) {
1581  AVHWFramesContext *frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
1582  if (frames_ctx->format != avctx->pix_fmt) {
1583  av_log(avctx, AV_LOG_ERROR,
1584  "Mismatching AVCodecContext.pix_fmt and AVHWFramesContext.format\n");
1585  ret = AVERROR(EINVAL);
1586  goto free_and_end;
1587  }
1588  }
1589  }
1590 
1592  avctx->pts_correction_num_faulty_dts = 0;
1593  avctx->pts_correction_last_pts =
1594  avctx->pts_correction_last_dts = INT64_MIN;
1595 
1596  if ( !CONFIG_GRAY && avctx->flags & AV_CODEC_FLAG_GRAY
1598  av_log(avctx, AV_LOG_WARNING,
1599  "gray decoding requested but not enabled at configuration time\n");
1600 
1601  if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
1602  || avctx->internal->frame_thread_encoder)) {
1603  ret = avctx->codec->init(avctx);
1604  if (ret < 0) {
1605  goto free_and_end;
1606  }
1607  }
1608 
1609  ret=0;
1610 
1611 #if FF_API_AUDIOENC_DELAY
1612  if (av_codec_is_encoder(avctx->codec))
1613  avctx->delay = avctx->initial_padding;
1614 #endif
1615 
1616  if (av_codec_is_decoder(avctx->codec)) {
1617  if (!avctx->bit_rate)
1618  avctx->bit_rate = get_bit_rate(avctx);
1619  /* validate channel layout from the decoder */
1620  if (avctx->channel_layout) {
1621  int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1622  if (!avctx->channels)
1623  avctx->channels = channels;
1624  else if (channels != avctx->channels) {
1625  char buf[512];
1626  av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1627  av_log(avctx, AV_LOG_WARNING,
1628  "Channel layout '%s' with %d channels does not match specified number of channels %d: "
1629  "ignoring specified channel layout\n",
1630  buf, channels, avctx->channels);
1631  avctx->channel_layout = 0;
1632  }
1633  }
1634  if (avctx->channels && avctx->channels < 0 ||
1635  avctx->channels > FF_SANE_NB_CHANNELS) {
1636  ret = AVERROR(EINVAL);
1637  goto free_and_end;
1638  }
1639  if (avctx->sub_charenc) {
1640  if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
1641  av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
1642  "supported with subtitles codecs\n");
1643  ret = AVERROR(EINVAL);
1644  goto free_and_end;
1645  } else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
1646  av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
1647  "subtitles character encoding will be ignored\n",
1648  avctx->codec_descriptor->name);
1650  } else {
1651  /* input character encoding is set for a text based subtitle
1652  * codec at this point */
1655 
1657 #if CONFIG_ICONV
1658  iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
1659  if (cd == (iconv_t)-1) {
1660  ret = AVERROR(errno);
1661  av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
1662  "with input character encoding \"%s\"\n", avctx->sub_charenc);
1663  goto free_and_end;
1664  }
1665  iconv_close(cd);
1666 #else
1667  av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
1668  "conversion needs a libavcodec built with iconv support "
1669  "for this codec\n");
1670  ret = AVERROR(ENOSYS);
1671  goto free_and_end;
1672 #endif
1673  }
1674  }
1675  }
1676 
1677 #if FF_API_AVCTX_TIMEBASE
1678  if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
1679  avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
1680 #endif
1681  }
1682  if (codec->priv_data_size > 0 && avctx->priv_data && codec->priv_class) {
1683  av_assert0(*(const AVClass **)avctx->priv_data == codec->priv_class);
1684  }
1685 
1686 end:
1687  ff_unlock_avcodec(codec);
1688  if (options) {
1690  *options = tmp;
1691  }
1692 
1693  return ret;
1694 free_and_end:
1695  if (avctx->codec &&
1696  (avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP))
1697  avctx->codec->close(avctx);
1698 
1699  if (codec->priv_class && codec->priv_data_size)
1700  av_opt_free(avctx->priv_data);
1701  av_opt_free(avctx);
1702 
1703 #if FF_API_CODED_FRAME
1705  av_frame_free(&avctx->coded_frame);
1707 #endif
1708 
1709  av_dict_free(&tmp);
1710  av_freep(&avctx->priv_data);
1711  if (avctx->internal) {
1712  av_packet_free(&avctx->internal->buffer_pkt);
1713  av_frame_free(&avctx->internal->buffer_frame);
1714  av_frame_free(&avctx->internal->to_free);
1715  av_freep(&avctx->internal->pool);
1716  }
1717  av_freep(&avctx->internal);
1718  avctx->codec = NULL;
1719  goto end;
1720 }
1721 
1722 int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
1723 {
1724  if (avpkt->size < 0) {
1725  av_log(avctx, AV_LOG_ERROR, "Invalid negative user packet size %d\n", avpkt->size);
1726  return AVERROR(EINVAL);
1727  }
1729  av_log(avctx, AV_LOG_ERROR, "Invalid minimum required packet size %"PRId64" (max allowed is %d)\n",
1730  size, INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE);
1731  return AVERROR(EINVAL);
1732  }
1733 
1734  if (avctx && 2*min_size < size) { // FIXME The factor needs to be finetuned
1735  av_assert0(!avpkt->data || avpkt->data != avctx->internal->byte_buffer);
1736  if (!avpkt->data || avpkt->size < size) {
1738  avpkt->data = avctx->internal->byte_buffer;
1739  avpkt->size = avctx->internal->byte_buffer_size;
1740  }
1741  }
1742 
1743  if (avpkt->data) {
1744  AVBufferRef *buf = avpkt->buf;
1745 
1746  if (avpkt->size < size) {
1747  av_log(avctx, AV_LOG_ERROR, "User packet is too small (%d < %"PRId64")\n", avpkt->size, size);
1748  return AVERROR(EINVAL);
1749  }
1750 
1751  av_init_packet(avpkt);
1752  avpkt->buf = buf;
1753  avpkt->size = size;
1754  return 0;
1755  } else {
1756  int ret = av_new_packet(avpkt, size);
1757  if (ret < 0)
1758  av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %"PRId64"\n", size);
1759  return ret;
1760  }
1761 }
1762 
1764 {
1765  return ff_alloc_packet2(NULL, avpkt, size, 0);
1766 }
1767 
1768 /**
1769  * Pad last frame with silence.
1770  */
1771 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1772 {
1773  AVFrame *frame = NULL;
1774  int ret;
1775 
1776  if (!(frame = av_frame_alloc()))
1777  return AVERROR(ENOMEM);
1778 
1779  frame->format = src->format;
1780  frame->channel_layout = src->channel_layout;
1782  frame->nb_samples = s->frame_size;
1783  ret = av_frame_get_buffer(frame, 32);
1784  if (ret < 0)
1785  goto fail;
1786 
1787  ret = av_frame_copy_props(frame, src);
1788  if (ret < 0)
1789  goto fail;
1790 
1791  if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1792  src->nb_samples, s->channels, s->sample_fmt)) < 0)
1793  goto fail;
1794  if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1795  frame->nb_samples - src->nb_samples,
1796  s->channels, s->sample_fmt)) < 0)
1797  goto fail;
1798 
1799  *dst = frame;
1800 
1801  return 0;
1802 
1803 fail:
1804  av_frame_free(&frame);
1805  return ret;
1806 }
1807 
1808 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1809  AVPacket *avpkt,
1810  const AVFrame *frame,
1811  int *got_packet_ptr)
1812 {
1813  AVFrame *extended_frame = NULL;
1814  AVFrame *padded_frame = NULL;
1815  int ret;
1816  AVPacket user_pkt = *avpkt;
1817  int needs_realloc = !user_pkt.data;
1818 
1819  *got_packet_ptr = 0;
1820 
1821  if (!avctx->codec->encode2) {
1822  av_log(avctx, AV_LOG_ERROR, "This encoder requires using the avcodec_send_frame() API.\n");
1823  return AVERROR(ENOSYS);
1824  }
1825 
1826  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY) && !frame) {
1827  av_packet_unref(avpkt);
1828  av_init_packet(avpkt);
1829  return 0;
1830  }
1831 
1832  /* ensure that extended_data is properly set */
1833  if (frame && !frame->extended_data) {
1834  if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1835  avctx->channels > AV_NUM_DATA_POINTERS) {
1836  av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1837  "with more than %d channels, but extended_data is not set.\n",
1839  return AVERROR(EINVAL);
1840  }
1841  av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1842 
1843  extended_frame = av_frame_alloc();
1844  if (!extended_frame)
1845  return AVERROR(ENOMEM);
1846 
1847  memcpy(extended_frame, frame, sizeof(AVFrame));
1848  extended_frame->extended_data = extended_frame->data;
1849  frame = extended_frame;
1850  }
1851 
1852  /* extract audio service type metadata */
1853  if (frame) {
1855  if (sd && sd->size >= sizeof(enum AVAudioServiceType))
1856  avctx->audio_service_type = *(enum AVAudioServiceType*)sd->data;
1857  }
1858 
1859  /* check for valid frame size */
1860  if (frame) {
1862  if (frame->nb_samples > avctx->frame_size) {
1863  av_log(avctx, AV_LOG_ERROR, "more samples than frame size (avcodec_encode_audio2)\n");
1864  ret = AVERROR(EINVAL);
1865  goto end;
1866  }
1867  } else if (!(avctx->codec->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1868  if (frame->nb_samples < avctx->frame_size &&
1869  !avctx->internal->last_audio_frame) {
1870  ret = pad_last_frame(avctx, &padded_frame, frame);
1871  if (ret < 0)
1872  goto end;
1873 
1874  frame = padded_frame;
1875  avctx->internal->last_audio_frame = 1;
1876  }
1877 
1878  if (frame->nb_samples != avctx->frame_size) {
1879  av_log(avctx, AV_LOG_ERROR, "nb_samples (%d) != frame_size (%d) (avcodec_encode_audio2)\n", frame->nb_samples, avctx->frame_size);
1880  ret = AVERROR(EINVAL);
1881  goto end;
1882  }
1883  }
1884  }
1885 
1886  av_assert0(avctx->codec->encode2);
1887 
1888  ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1889  if (!ret) {
1890  if (*got_packet_ptr) {
1891  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY)) {
1892  if (avpkt->pts == AV_NOPTS_VALUE)
1893  avpkt->pts = frame->pts;
1894  if (!avpkt->duration)
1895  avpkt->duration = ff_samples_to_time_base(avctx,
1896  frame->nb_samples);
1897  }
1898  avpkt->dts = avpkt->pts;
1899  } else {
1900  avpkt->size = 0;
1901  }
1902  }
1903  if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1904  needs_realloc = 0;
1905  if (user_pkt.data) {
1906  if (user_pkt.size >= avpkt->size) {
1907  memcpy(user_pkt.data, avpkt->data, avpkt->size);
1908  } else {
1909  av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1910  avpkt->size = user_pkt.size;
1911  ret = -1;
1912  }
1913  avpkt->buf = user_pkt.buf;
1914  avpkt->data = user_pkt.data;
1915  } else {
1916  if (av_dup_packet(avpkt) < 0) {
1917  ret = AVERROR(ENOMEM);
1918  }
1919  }
1920  }
1921 
1922  if (!ret) {
1923  if (needs_realloc && avpkt->data) {
1924  ret = av_buffer_realloc(&avpkt->buf, avpkt->size + AV_INPUT_BUFFER_PADDING_SIZE);
1925  if (ret >= 0)
1926  avpkt->data = avpkt->buf->data;
1927  }
1928 
1929  avctx->frame_number++;
1930  }
1931 
1932  if (ret < 0 || !*got_packet_ptr) {
1933  av_packet_unref(avpkt);
1934  av_init_packet(avpkt);
1935  goto end;
1936  }
1937 
1938  /* NOTE: if we add any audio encoders which output non-keyframe packets,
1939  * this needs to be moved to the encoders, but for now we can do it
1940  * here to simplify things */
1941  avpkt->flags |= AV_PKT_FLAG_KEY;
1942 
1943 end:
1944  av_frame_free(&padded_frame);
1945  av_free(extended_frame);
1946 
1947 #if FF_API_AUDIOENC_DELAY
1948  avctx->delay = avctx->initial_padding;
1949 #endif
1950 
1951  return ret;
1952 }
1953 
1954 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
1955  AVPacket *avpkt,
1956  const AVFrame *frame,
1957  int *got_packet_ptr)
1958 {
1959  int ret;
1960  AVPacket user_pkt = *avpkt;
1961  int needs_realloc = !user_pkt.data;
1962 
1963  *got_packet_ptr = 0;
1964 
1965  if (!avctx->codec->encode2) {
1966  av_log(avctx, AV_LOG_ERROR, "This encoder requires using the avcodec_send_frame() API.\n");
1967  return AVERROR(ENOSYS);
1968  }
1969 
1970  if(CONFIG_FRAME_THREAD_ENCODER &&
1972  return ff_thread_video_encode_frame(avctx, avpkt, frame, got_packet_ptr);
1973 
1974  if ((avctx->flags&AV_CODEC_FLAG_PASS1) && avctx->stats_out)
1975  avctx->stats_out[0] = '\0';
1976 
1977  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY) && !frame) {
1978  av_packet_unref(avpkt);
1979  av_init_packet(avpkt);
1980  avpkt->size = 0;
1981  return 0;
1982  }
1983 
1984  if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
1985  return AVERROR(EINVAL);
1986 
1987  if (frame && frame->format == AV_PIX_FMT_NONE)
1988  av_log(avctx, AV_LOG_WARNING, "AVFrame.format is not set\n");
1989  if (frame && (frame->width == 0 || frame->height == 0))
1990  av_log(avctx, AV_LOG_WARNING, "AVFrame.width or height is not set\n");
1991 
1992  av_assert0(avctx->codec->encode2);
1993 
1994  ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1995  av_assert0(ret <= 0);
1996 
1997  emms_c();
1998 
1999  if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
2000  needs_realloc = 0;
2001  if (user_pkt.data) {
2002  if (user_pkt.size >= avpkt->size) {
2003  memcpy(user_pkt.data, avpkt->data, avpkt->size);
2004  } else {
2005  av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
2006  avpkt->size = user_pkt.size;
2007  ret = -1;
2008  }
2009  avpkt->buf = user_pkt.buf;
2010  avpkt->data = user_pkt.data;
2011  } else {
2012  if (av_dup_packet(avpkt) < 0) {
2013  ret = AVERROR(ENOMEM);
2014  }
2015  }
2016  }
2017 
2018  if (!ret) {
2019  if (!*got_packet_ptr)
2020  avpkt->size = 0;
2021  else if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
2022  avpkt->pts = avpkt->dts = frame->pts;
2023 
2024  if (needs_realloc && avpkt->data) {
2025  ret = av_buffer_realloc(&avpkt->buf, avpkt->size + AV_INPUT_BUFFER_PADDING_SIZE);
2026  if (ret >= 0)
2027  avpkt->data = avpkt->buf->data;
2028  }
2029 
2030  avctx->frame_number++;
2031  }
2032 
2033  if (ret < 0 || !*got_packet_ptr)
2034  av_packet_unref(avpkt);
2035 
2036  return ret;
2037 }
2038 
2040  const AVSubtitle *sub)
2041 {
2042  int ret;
2043  if (sub->start_display_time) {
2044  av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
2045  return -1;
2046  }
2047 
2048  ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
2049  avctx->frame_number++;
2050  return ret;
2051 }
2052 
2053 /**
2054  * Attempt to guess proper monotonic timestamps for decoded video frames
2055  * which might have incorrect times. Input timestamps may wrap around, in
2056  * which case the output will as well.
2057  *
2058  * @param pts the pts field of the decoded AVPacket, as passed through
2059  * AVFrame.pts
2060  * @param dts the dts field of the decoded AVPacket
2061  * @return one of the input values, may be AV_NOPTS_VALUE
2062  */
2064  int64_t reordered_pts, int64_t dts)
2065 {
2066  int64_t pts = AV_NOPTS_VALUE;
2067 
2068  if (dts != AV_NOPTS_VALUE) {
2070  ctx->pts_correction_last_dts = dts;
2071  } else if (reordered_pts != AV_NOPTS_VALUE)
2072  ctx->pts_correction_last_dts = reordered_pts;
2073 
2074  if (reordered_pts != AV_NOPTS_VALUE) {
2075  ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
2076  ctx->pts_correction_last_pts = reordered_pts;
2077  } else if(dts != AV_NOPTS_VALUE)
2078  ctx->pts_correction_last_pts = dts;
2079 
2081  && reordered_pts != AV_NOPTS_VALUE)
2082  pts = reordered_pts;
2083  else
2084  pts = dts;
2085 
2086  return pts;
2087 }
2088 
2089 static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
2090 {
2091  int size = 0, ret;
2092  const uint8_t *data;
2093  uint32_t flags;
2094  int64_t val;
2095 
2096  data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
2097  if (!data)
2098  return 0;
2099 
2100  if (!(avctx->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE)) {
2101  av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
2102  "changes, but PARAM_CHANGE side data was sent to it.\n");
2103  ret = AVERROR(EINVAL);
2104  goto fail2;
2105  }
2106 
2107  if (size < 4)
2108  goto fail;
2109 
2110  flags = bytestream_get_le32(&data);
2111  size -= 4;
2112 
2114  if (size < 4)
2115  goto fail;
2116  val = bytestream_get_le32(&data);
2117  if (val <= 0 || val > INT_MAX) {
2118  av_log(avctx, AV_LOG_ERROR, "Invalid channel count");
2119  ret = AVERROR_INVALIDDATA;
2120  goto fail2;
2121  }
2122  avctx->channels = val;
2123  size -= 4;
2124  }
2126  if (size < 8)
2127  goto fail;
2128  avctx->channel_layout = bytestream_get_le64(&data);
2129  size -= 8;
2130  }
2132  if (size < 4)
2133  goto fail;
2134  val = bytestream_get_le32(&data);
2135  if (val <= 0 || val > INT_MAX) {
2136  av_log(avctx, AV_LOG_ERROR, "Invalid sample rate");
2137  ret = AVERROR_INVALIDDATA;
2138  goto fail2;
2139  }
2140  avctx->sample_rate = val;
2141  size -= 4;
2142  }
2144  if (size < 8)
2145  goto fail;
2146  avctx->width = bytestream_get_le32(&data);
2147  avctx->height = bytestream_get_le32(&data);
2148  size -= 8;
2149  ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
2150  if (ret < 0)
2151  goto fail2;
2152  }
2153 
2154  return 0;
2155 fail:
2156  av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
2157  ret = AVERROR_INVALIDDATA;
2158 fail2:
2159  if (ret < 0) {
2160  av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
2161  if (avctx->err_recognition & AV_EF_EXPLODE)
2162  return ret;
2163  }
2164  return 0;
2165 }
2166 
2168 {
2169  int ret;
2170 
2171  /* move the original frame to our backup */
2172  av_frame_unref(avci->to_free);
2173  av_frame_move_ref(avci->to_free, frame);
2174 
2175  /* now copy everything except the AVBufferRefs back
2176  * note that we make a COPY of the side data, so calling av_frame_free() on
2177  * the caller's frame will work properly */
2178  ret = av_frame_copy_props(frame, avci->to_free);
2179  if (ret < 0)
2180  return ret;
2181 
2182  memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
2183  memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
2184  if (avci->to_free->extended_data != avci->to_free->data) {
2185  int planes = av_frame_get_channels(avci->to_free);
2186  int size = planes * sizeof(*frame->extended_data);
2187 
2188  if (!size) {
2189  av_frame_unref(frame);
2190  return AVERROR_BUG;
2191  }
2192 
2193  frame->extended_data = av_malloc(size);
2194  if (!frame->extended_data) {
2195  av_frame_unref(frame);
2196  return AVERROR(ENOMEM);
2197  }
2198  memcpy(frame->extended_data, avci->to_free->extended_data,
2199  size);
2200  } else
2201  frame->extended_data = frame->data;
2202 
2203  frame->format = avci->to_free->format;
2204  frame->width = avci->to_free->width;
2205  frame->height = avci->to_free->height;
2206  frame->channel_layout = avci->to_free->channel_layout;
2207  frame->nb_samples = avci->to_free->nb_samples;
2209 
2210  return 0;
2211 }
2212 
2213 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
2214  int *got_picture_ptr,
2215  const AVPacket *avpkt)
2216 {
2217  AVCodecInternal *avci = avctx->internal;
2218  int ret;
2219  // copy to ensure we do not change avpkt
2220  AVPacket tmp = *avpkt;
2221 
2222  if (!avctx->codec)
2223  return AVERROR(EINVAL);
2224  if (avctx->codec->type != AVMEDIA_TYPE_VIDEO) {
2225  av_log(avctx, AV_LOG_ERROR, "Invalid media type for video\n");
2226  return AVERROR(EINVAL);
2227  }
2228 
2229  if (!avctx->codec->decode) {
2230  av_log(avctx, AV_LOG_ERROR, "This decoder requires using the avcodec_send_packet() API.\n");
2231  return AVERROR(ENOSYS);
2232  }
2233 
2234  *got_picture_ptr = 0;
2235  if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
2236  return AVERROR(EINVAL);
2237 
2238  avctx->internal->pkt = avpkt;
2239  ret = apply_param_change(avctx, avpkt);
2240  if (ret < 0)
2241  return ret;
2242 
2243  av_frame_unref(picture);
2244 
2245  if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size ||
2246  (avctx->active_thread_type & FF_THREAD_FRAME)) {
2247  int did_split = av_packet_split_side_data(&tmp);
2248  ret = apply_param_change(avctx, &tmp);
2249  if (ret < 0)
2250  goto fail;
2251 
2252  avctx->internal->pkt = &tmp;
2253  if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2254  ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
2255  &tmp);
2256  else {
2257  ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
2258  &tmp);
2260  picture->pkt_dts = avpkt->dts;
2261 
2262  if(!avctx->has_b_frames){
2263  av_frame_set_pkt_pos(picture, avpkt->pos);
2264  }
2265  //FIXME these should be under if(!avctx->has_b_frames)
2266  /* get_buffer is supposed to set frame parameters */
2267  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DR1)) {
2268  if (!picture->sample_aspect_ratio.num) picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
2269  if (!picture->width) picture->width = avctx->width;
2270  if (!picture->height) picture->height = avctx->height;
2271  if (picture->format == AV_PIX_FMT_NONE) picture->format = avctx->pix_fmt;
2272  }
2273  }
2274 
2275 fail:
2276  emms_c(); //needed to avoid an emms_c() call before every return;
2277 
2278  avctx->internal->pkt = NULL;
2279  if (did_split) {
2281  if(ret == tmp.size)
2282  ret = avpkt->size;
2283  }
2284  if (picture->flags & AV_FRAME_FLAG_DISCARD) {
2285  *got_picture_ptr = 0;
2286  }
2287  if (*got_picture_ptr) {
2288  if (!avctx->refcounted_frames) {
2289  int err = unrefcount_frame(avci, picture);
2290  if (err < 0)
2291  return err;
2292  }
2293 
2294  avctx->frame_number++;
2296  guess_correct_pts(avctx,
2297  picture->pts,
2298  picture->pkt_dts));
2299  } else
2300  av_frame_unref(picture);
2301  } else
2302  ret = 0;
2303 
2304  /* many decoders assign whole AVFrames, thus overwriting extended_data;
2305  * make sure it's set correctly */
2306  av_assert0(!picture->extended_data || picture->extended_data == picture->data);
2307 
2308 #if FF_API_AVCTX_TIMEBASE
2309  if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
2310  avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
2311 #endif
2312 
2313  return ret;
2314 }
2315 
2316 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
2317  AVFrame *frame,
2318  int *got_frame_ptr,
2319  const AVPacket *avpkt)
2320 {
2321  AVCodecInternal *avci = avctx->internal;
2322  int ret = 0;
2323 
2324  *got_frame_ptr = 0;
2325 
2326  if (!avctx->codec)
2327  return AVERROR(EINVAL);
2328 
2329  if (!avctx->codec->decode) {
2330  av_log(avctx, AV_LOG_ERROR, "This decoder requires using the avcodec_send_packet() API.\n");
2331  return AVERROR(ENOSYS);
2332  }
2333 
2334  if (!avpkt->data && avpkt->size) {
2335  av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2336  return AVERROR(EINVAL);
2337  }
2338  if (avctx->codec->type != AVMEDIA_TYPE_AUDIO) {
2339  av_log(avctx, AV_LOG_ERROR, "Invalid media type for audio\n");
2340  return AVERROR(EINVAL);
2341  }
2342 
2343  av_frame_unref(frame);
2344 
2345  if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
2346  uint8_t *side;
2347  int side_size;
2348  uint32_t discard_padding = 0;
2349  uint8_t skip_reason = 0;
2350  uint8_t discard_reason = 0;
2351  // copy to ensure we do not change avpkt
2352  AVPacket tmp = *avpkt;
2353  int did_split = av_packet_split_side_data(&tmp);
2354  ret = apply_param_change(avctx, &tmp);
2355  if (ret < 0)
2356  goto fail;
2357 
2358  avctx->internal->pkt = &tmp;
2359  if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2360  ret = ff_thread_decode_frame(avctx, frame, got_frame_ptr, &tmp);
2361  else {
2362  ret = avctx->codec->decode(avctx, frame, got_frame_ptr, &tmp);
2363  av_assert0(ret <= tmp.size);
2364  frame->pkt_dts = avpkt->dts;
2365  }
2366  if (ret >= 0 && *got_frame_ptr) {
2367  avctx->frame_number++;
2369  guess_correct_pts(avctx,
2370  frame->pts,
2371  frame->pkt_dts));
2372  if (frame->format == AV_SAMPLE_FMT_NONE)
2373  frame->format = avctx->sample_fmt;
2374  if (!frame->channel_layout)
2375  frame->channel_layout = avctx->channel_layout;
2376  if (!av_frame_get_channels(frame))
2377  av_frame_set_channels(frame, avctx->channels);
2378  if (!frame->sample_rate)
2379  frame->sample_rate = avctx->sample_rate;
2380  }
2381 
2382  side= av_packet_get_side_data(avctx->internal->pkt, AV_PKT_DATA_SKIP_SAMPLES, &side_size);
2383  if(side && side_size>=10) {
2384  avctx->internal->skip_samples = AV_RL32(side);
2385  discard_padding = AV_RL32(side + 4);
2386  av_log(avctx, AV_LOG_DEBUG, "skip %d / discard %d samples due to side data\n",
2387  avctx->internal->skip_samples, (int)discard_padding);
2388  skip_reason = AV_RL8(side + 8);
2389  discard_reason = AV_RL8(side + 9);
2390  }
2391 
2392  if ((frame->flags & AV_FRAME_FLAG_DISCARD) && *got_frame_ptr &&
2393  !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
2394  avctx->internal->skip_samples = FFMAX(0, avctx->internal->skip_samples - frame->nb_samples);
2395  *got_frame_ptr = 0;
2396  }
2397 
2398  if (avctx->internal->skip_samples > 0 && *got_frame_ptr &&
2399  !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
2400  if(frame->nb_samples <= avctx->internal->skip_samples){
2401  *got_frame_ptr = 0;
2402  avctx->internal->skip_samples -= frame->nb_samples;
2403  av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
2404  avctx->internal->skip_samples);
2405  } else {
2407  frame->nb_samples - avctx->internal->skip_samples, avctx->channels, frame->format);
2408  if(avctx->pkt_timebase.num && avctx->sample_rate) {
2409  int64_t diff_ts = av_rescale_q(avctx->internal->skip_samples,
2410  (AVRational){1, avctx->sample_rate},
2411  avctx->pkt_timebase);
2412  if(frame->pts!=AV_NOPTS_VALUE)
2413  frame->pts += diff_ts;
2414 #if FF_API_PKT_PTS
2416  if(frame->pkt_pts!=AV_NOPTS_VALUE)
2417  frame->pkt_pts += diff_ts;
2419 #endif
2420  if(frame->pkt_dts!=AV_NOPTS_VALUE)
2421  frame->pkt_dts += diff_ts;
2422  if (av_frame_get_pkt_duration(frame) >= diff_ts)
2423  av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2424  } else {
2425  av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
2426  }
2427  av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
2428  avctx->internal->skip_samples, frame->nb_samples);
2429  frame->nb_samples -= avctx->internal->skip_samples;
2430  avctx->internal->skip_samples = 0;
2431  }
2432  }
2433 
2434  if (discard_padding > 0 && discard_padding <= frame->nb_samples && *got_frame_ptr &&
2435  !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
2436  if (discard_padding == frame->nb_samples) {
2437  *got_frame_ptr = 0;
2438  } else {
2439  if(avctx->pkt_timebase.num && avctx->sample_rate) {
2440  int64_t diff_ts = av_rescale_q(frame->nb_samples - discard_padding,
2441  (AVRational){1, avctx->sample_rate},
2442  avctx->pkt_timebase);
2443  av_frame_set_pkt_duration(frame, diff_ts);
2444  } else {
2445  av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for discarded samples.\n");
2446  }
2447  av_log(avctx, AV_LOG_DEBUG, "discard %d/%d samples\n",
2448  (int)discard_padding, frame->nb_samples);
2449  frame->nb_samples -= discard_padding;
2450  }
2451  }
2452 
2453  if ((avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL) && *got_frame_ptr) {
2455  if (fside) {
2456  AV_WL32(fside->data, avctx->internal->skip_samples);
2457  AV_WL32(fside->data + 4, discard_padding);
2458  AV_WL8(fside->data + 8, skip_reason);
2459  AV_WL8(fside->data + 9, discard_reason);
2460  avctx->internal->skip_samples = 0;
2461  }
2462  }
2463 fail:
2464  avctx->internal->pkt = NULL;
2465  if (did_split) {
2467  if(ret == tmp.size)
2468  ret = avpkt->size;
2469  }
2470 
2471  if (ret >= 0 && *got_frame_ptr) {
2472  if (!avctx->refcounted_frames) {
2473  int err = unrefcount_frame(avci, frame);
2474  if (err < 0)
2475  return err;
2476  }
2477  } else
2479  }
2480 
2481  av_assert0(ret <= avpkt->size);
2482 
2483  if (!avci->showed_multi_packet_warning &&
2484  ret >= 0 && ret != avpkt->size && !(avctx->codec->capabilities & AV_CODEC_CAP_SUBFRAMES)) {
2485  av_log(avctx, AV_LOG_WARNING, "Multiple frames in a packet.\n");
2486  avci->showed_multi_packet_warning = 1;
2487  }
2488 
2489  return ret;
2490 }
2491 
2492 #define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
2494  AVPacket *outpkt, const AVPacket *inpkt)
2495 {
2496 #if CONFIG_ICONV
2497  iconv_t cd = (iconv_t)-1;
2498  int ret = 0;
2499  char *inb, *outb;
2500  size_t inl, outl;
2501  AVPacket tmp;
2502 #endif
2503 
2504  if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER || inpkt->size == 0)
2505  return 0;
2506 
2507 #if CONFIG_ICONV
2508  cd = iconv_open("UTF-8", avctx->sub_charenc);
2509  av_assert0(cd != (iconv_t)-1);
2510 
2511  inb = inpkt->data;
2512  inl = inpkt->size;
2513 
2514  if (inl >= INT_MAX / UTF8_MAX_BYTES - AV_INPUT_BUFFER_PADDING_SIZE) {
2515  av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n");
2516  ret = AVERROR(ENOMEM);
2517  goto end;
2518  }
2519 
2520  ret = av_new_packet(&tmp, inl * UTF8_MAX_BYTES);
2521  if (ret < 0)
2522  goto end;
2523  outpkt->buf = tmp.buf;
2524  outpkt->data = tmp.data;
2525  outpkt->size = tmp.size;
2526  outb = outpkt->data;
2527  outl = outpkt->size;
2528 
2529  if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
2530  iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
2531  outl >= outpkt->size || inl != 0) {
2532  ret = FFMIN(AVERROR(errno), -1);
2533  av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
2534  "from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
2535  av_packet_unref(&tmp);
2536  goto end;
2537  }
2538  outpkt->size -= outl;
2539  memset(outpkt->data + outpkt->size, 0, outl);
2540 
2541 end:
2542  if (cd != (iconv_t)-1)
2543  iconv_close(cd);
2544  return ret;
2545 #else
2546  av_log(avctx, AV_LOG_ERROR, "requesting subtitles recoding without iconv");
2547  return AVERROR(EINVAL);
2548 #endif
2549 }
2550 
2551 static int utf8_check(const uint8_t *str)
2552 {
2553  const uint8_t *byte;
2554  uint32_t codepoint, min;
2555 
2556  while (*str) {
2557  byte = str;
2558  GET_UTF8(codepoint, *(byte++), return 0;);
2559  min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
2560  1 << (5 * (byte - str) - 4);
2561  if (codepoint < min || codepoint >= 0x110000 ||
2562  codepoint == 0xFFFE /* BOM */ ||
2563  codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
2564  return 0;
2565  str = byte;
2566  }
2567  return 1;
2568 }
2569 
2570 #if FF_API_ASS_TIMING
2571 static void insert_ts(AVBPrint *buf, int ts)
2572 {
2573  if (ts == -1) {
2574  av_bprintf(buf, "9:59:59.99,");
2575  } else {
2576  int h, m, s;
2577 
2578  h = ts/360000; ts -= 360000*h;
2579  m = ts/ 6000; ts -= 6000*m;
2580  s = ts/ 100; ts -= 100*s;
2581  av_bprintf(buf, "%d:%02d:%02d.%02d,", h, m, s, ts);
2582  }
2583 }
2584 
2586 {
2587  int i;
2588  AVBPrint buf;
2589 
2591 
2592  for (i = 0; i < sub->num_rects; i++) {
2593  char *final_dialog;
2594  const char *dialog;
2595  AVSubtitleRect *rect = sub->rects[i];
2596  int ts_start, ts_duration = -1;
2597  long int layer;
2598 
2599  if (rect->type != SUBTITLE_ASS || !strncmp(rect->ass, "Dialogue: ", 10))
2600  continue;
2601 
2602  av_bprint_clear(&buf);
2603 
2604  /* skip ReadOrder */
2605  dialog = strchr(rect->ass, ',');
2606  if (!dialog)
2607  continue;
2608  dialog++;
2609 
2610  /* extract Layer or Marked */
2611  layer = strtol(dialog, (char**)&dialog, 10);
2612  if (*dialog != ',')
2613  continue;
2614  dialog++;
2615 
2616  /* rescale timing to ASS time base (ms) */
2617  ts_start = av_rescale_q(pkt->pts, tb, av_make_q(1, 100));
2618  if (pkt->duration != -1)
2619  ts_duration = av_rescale_q(pkt->duration, tb, av_make_q(1, 100));
2620  sub->end_display_time = FFMAX(sub->end_display_time, 10 * ts_duration);
2621 
2622  /* construct ASS (standalone file form with timestamps) string */
2623  av_bprintf(&buf, "Dialogue: %ld,", layer);
2624  insert_ts(&buf, ts_start);
2625  insert_ts(&buf, ts_duration == -1 ? -1 : ts_start + ts_duration);
2626  av_bprintf(&buf, "%s\r\n", dialog);
2627 
2628  final_dialog = av_strdup(buf.str);
2629  if (!av_bprint_is_complete(&buf) || !final_dialog) {
2630  av_freep(&final_dialog);
2631  av_bprint_finalize(&buf, NULL);
2632  return AVERROR(ENOMEM);
2633  }
2634  av_freep(&rect->ass);
2635  rect->ass = final_dialog;
2636  }
2637 
2638  av_bprint_finalize(&buf, NULL);
2639  return 0;
2640 }
2641 #endif
2642 
2644  int *got_sub_ptr,
2645  AVPacket *avpkt)
2646 {
2647  int i, ret = 0;
2648 
2649  if (!avpkt->data && avpkt->size) {
2650  av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2651  return AVERROR(EINVAL);
2652  }
2653  if (!avctx->codec)
2654  return AVERROR(EINVAL);
2655  if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
2656  av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
2657  return AVERROR(EINVAL);
2658  }
2659 
2660  *got_sub_ptr = 0;
2661  get_subtitle_defaults(sub);
2662 
2663  if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size) {
2664  AVPacket pkt_recoded;
2665  AVPacket tmp = *avpkt;
2666  int did_split = av_packet_split_side_data(&tmp);
2667  //apply_param_change(avctx, &tmp);
2668 
2669  if (did_split) {
2670  /* FFMIN() prevents overflow in case the packet wasn't allocated with
2671  * proper padding.
2672  * If the side data is smaller than the buffer padding size, the
2673  * remaining bytes should have already been filled with zeros by the
2674  * original packet allocation anyway. */
2675  memset(tmp.data + tmp.size, 0,
2676  FFMIN(avpkt->size - tmp.size, AV_INPUT_BUFFER_PADDING_SIZE));
2677  }
2678 
2679  pkt_recoded = tmp;
2680  ret = recode_subtitle(avctx, &pkt_recoded, &tmp);
2681  if (ret < 0) {
2682  *got_sub_ptr = 0;
2683  } else {
2684  avctx->internal->pkt = &pkt_recoded;
2685 
2686  if (avctx->pkt_timebase.num && avpkt->pts != AV_NOPTS_VALUE)
2687  sub->pts = av_rescale_q(avpkt->pts,
2688  avctx->pkt_timebase, AV_TIME_BASE_Q);
2689  ret = avctx->codec->decode(avctx, sub, got_sub_ptr, &pkt_recoded);
2690  av_assert1((ret >= 0) >= !!*got_sub_ptr &&
2691  !!*got_sub_ptr >= !!sub->num_rects);
2692 
2693 #if FF_API_ASS_TIMING
2695  && *got_sub_ptr && sub->num_rects) {
2696  const AVRational tb = avctx->pkt_timebase.num ? avctx->pkt_timebase
2697  : avctx->time_base;
2698  int err = convert_sub_to_old_ass_form(sub, avpkt, tb);
2699  if (err < 0)
2700  ret = err;
2701  }
2702 #endif
2703 
2704  if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
2705  avctx->pkt_timebase.num) {
2706  AVRational ms = { 1, 1000 };
2707  sub->end_display_time = av_rescale_q(avpkt->duration,
2708  avctx->pkt_timebase, ms);
2709  }
2710 
2711  for (i = 0; i < sub->num_rects; i++) {
2712  if (sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
2713  av_log(avctx, AV_LOG_ERROR,
2714  "Invalid UTF-8 in decoded subtitles text; "
2715  "maybe missing -sub_charenc option\n");
2716  avsubtitle_free(sub);
2717  return AVERROR_INVALIDDATA;
2718  }
2719  }
2720 
2721  if (tmp.data != pkt_recoded.data) { // did we recode?
2722  /* prevent from destroying side data from original packet */
2723  pkt_recoded.side_data = NULL;
2724  pkt_recoded.side_data_elems = 0;
2725 
2726  av_packet_unref(&pkt_recoded);
2727  }
2729  sub->format = 0;
2730  else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB)
2731  sub->format = 1;
2732  avctx->internal->pkt = NULL;
2733  }
2734 
2735  if (did_split) {
2737  if(ret == tmp.size)
2738  ret = avpkt->size;
2739  }
2740 
2741  if (*got_sub_ptr)
2742  avctx->frame_number++;
2743  }
2744 
2745  return ret;
2746 }
2747 
2749 {
2750  int i;
2751 
2752  for (i = 0; i < sub->num_rects; i++) {
2753  av_freep(&sub->rects[i]->data[0]);
2754  av_freep(&sub->rects[i]->data[1]);
2755  av_freep(&sub->rects[i]->data[2]);
2756  av_freep(&sub->rects[i]->data[3]);
2757  av_freep(&sub->rects[i]->text);
2758  av_freep(&sub->rects[i]->ass);
2759  av_freep(&sub->rects[i]);
2760  }
2761 
2762  av_freep(&sub->rects);
2763 
2764  memset(sub, 0, sizeof(AVSubtitle));
2765 }
2766 
2767 static int do_decode(AVCodecContext *avctx, AVPacket *pkt)
2768 {
2769  int got_frame;
2770  int ret;
2771 
2772  av_assert0(!avctx->internal->buffer_frame->buf[0]);
2773 
2774  if (!pkt)
2775  pkt = avctx->internal->buffer_pkt;
2776 
2777  // This is the lesser evil. The field is for compatibility with legacy users
2778  // of the legacy API, and users using the new API should not be forced to
2779  // even know about this field.
2780  avctx->refcounted_frames = 1;
2781 
2782  // Some codecs (at least wma lossless) will crash when feeding drain packets
2783  // after EOF was signaled.
2784  if (avctx->internal->draining_done)
2785  return AVERROR_EOF;
2786 
2787  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
2788  ret = avcodec_decode_video2(avctx, avctx->internal->buffer_frame,
2789  &got_frame, pkt);
2790  if (ret >= 0)
2791  ret = pkt->size;
2792  } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2793  ret = avcodec_decode_audio4(avctx, avctx->internal->buffer_frame,
2794  &got_frame, pkt);
2795  } else {
2796  ret = AVERROR(EINVAL);
2797  }
2798 
2799  if (ret == AVERROR(EAGAIN))
2800  ret = pkt->size;
2801 
2802  if (ret < 0)
2803  return ret;
2804 
2805  if (avctx->internal->draining && !got_frame)
2806  avctx->internal->draining_done = 1;
2807 
2808  if (ret >= pkt->size) {
2810  } else {
2811  int consumed = ret;
2812 
2813  if (pkt != avctx->internal->buffer_pkt) {
2815  if ((ret = av_packet_ref(avctx->internal->buffer_pkt, pkt)) < 0)
2816  return ret;
2817  }
2818 
2819  avctx->internal->buffer_pkt->data += consumed;
2820  avctx->internal->buffer_pkt->size -= consumed;
2823  }
2824 
2825  if (got_frame)
2826  av_assert0(avctx->internal->buffer_frame->buf[0]);
2827 
2828  return 0;
2829 }
2830 
2831 int attribute_align_arg avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt)
2832 {
2833  int ret;
2834 
2835  if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
2836  return AVERROR(EINVAL);
2837 
2838  if (avctx->internal->draining)
2839  return AVERROR_EOF;
2840 
2841  if (avpkt && !avpkt->size && avpkt->data)
2842  return AVERROR(EINVAL);
2843 
2844  if (!avpkt || !avpkt->size) {
2845  avctx->internal->draining = 1;
2846  avpkt = NULL;
2847 
2848  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
2849  return 0;
2850  }
2851 
2852  if (avctx->codec->send_packet) {
2853  if (avpkt) {
2854  AVPacket tmp = *avpkt;
2855  int did_split = av_packet_split_side_data(&tmp);
2856  ret = apply_param_change(avctx, &tmp);
2857  if (ret >= 0)
2858  ret = avctx->codec->send_packet(avctx, &tmp);
2859  if (did_split)
2861  return ret;
2862  } else {
2863  return avctx->codec->send_packet(avctx, NULL);
2864  }
2865  }
2866 
2867  // Emulation via old API. Assume avpkt is likely not refcounted, while
2868  // decoder output is always refcounted, and avoid copying.
2869 
2870  if (avctx->internal->buffer_pkt->size || avctx->internal->buffer_frame->buf[0])
2871  return AVERROR(EAGAIN);
2872 
2873  // The goal is decoding the first frame of the packet without using memcpy,
2874  // because the common case is having only 1 frame per packet (especially
2875  // with video, but audio too). In other cases, it can't be avoided, unless
2876  // the user is feeding refcounted packets.
2877  return do_decode(avctx, (AVPacket *)avpkt);
2878 }
2879 
2880 int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
2881 {
2882  int ret;
2883 
2884  av_frame_unref(frame);
2885 
2886  if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
2887  return AVERROR(EINVAL);
2888 
2889  if (avctx->codec->receive_frame) {
2890  if (avctx->internal->draining && !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
2891  return AVERROR_EOF;
2892  ret = avctx->codec->receive_frame(avctx, frame);
2893  if (ret >= 0) {
2896  guess_correct_pts(avctx, frame->pts, frame->pkt_dts));
2897  }
2898  }
2899  return ret;
2900  }
2901 
2902  // Emulation via old API.
2903 
2904  if (!avctx->internal->buffer_frame->buf[0]) {
2905  if (!avctx->internal->buffer_pkt->size && !avctx->internal->draining)
2906  return AVERROR(EAGAIN);
2907 
2908  while (1) {
2909  if ((ret = do_decode(avctx, avctx->internal->buffer_pkt)) < 0) {
2911  return ret;
2912  }
2913  // Some audio decoders may consume partial data without returning
2914  // a frame (fate-wmapro-2ch). There is no way to make the caller
2915  // call avcodec_receive_frame() again without returning a frame,
2916  // so try to decode more in these cases.
2917  if (avctx->internal->buffer_frame->buf[0] ||
2918  !avctx->internal->buffer_pkt->size)
2919  break;
2920  }
2921  }
2922 
2923  if (!avctx->internal->buffer_frame->buf[0])
2924  return avctx->internal->draining ? AVERROR_EOF : AVERROR(EAGAIN);
2925 
2926  av_frame_move_ref(frame, avctx->internal->buffer_frame);
2927  return 0;
2928 }
2929 
2930 static int do_encode(AVCodecContext *avctx, const AVFrame *frame, int *got_packet)
2931 {
2932  int ret;
2933  *got_packet = 0;
2934 
2936  avctx->internal->buffer_pkt_valid = 0;
2937 
2938  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
2939  ret = avcodec_encode_video2(avctx, avctx->internal->buffer_pkt,
2940  frame, got_packet);
2941  } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2942  ret = avcodec_encode_audio2(avctx, avctx->internal->buffer_pkt,
2943  frame, got_packet);
2944  } else {
2945  ret = AVERROR(EINVAL);
2946  }
2947 
2948  if (ret >= 0 && *got_packet) {
2949  // Encoders must always return ref-counted buffers.
2950  // Side-data only packets have no data and can be not ref-counted.
2951  av_assert0(!avctx->internal->buffer_pkt->data || avctx->internal->buffer_pkt->buf);
2952  avctx->internal->buffer_pkt_valid = 1;
2953  ret = 0;
2954  } else {
2956  }
2957 
2958  return ret;
2959 }
2960 
2961 int attribute_align_arg avcodec_send_frame(AVCodecContext *avctx, const AVFrame *frame)
2962 {
2963  if (!avcodec_is_open(avctx) || !av_codec_is_encoder(avctx->codec))
2964  return AVERROR(EINVAL);
2965 
2966  if (avctx->internal->draining)
2967  return AVERROR_EOF;
2968 
2969  if (!frame) {
2970  avctx->internal->draining = 1;
2971 
2972  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
2973  return 0;
2974  }
2975 
2976  if (avctx->codec->send_frame)
2977  return avctx->codec->send_frame(avctx, frame);
2978 
2979  // Emulation via old API. Do it here instead of avcodec_receive_packet, because:
2980  // 1. if the AVFrame is not refcounted, the copying will be much more
2981  // expensive than copying the packet data
2982  // 2. assume few users use non-refcounted AVPackets, so usually no copy is
2983  // needed
2984 
2985  if (avctx->internal->buffer_pkt_valid)
2986  return AVERROR(EAGAIN);
2987 
2988  return do_encode(avctx, frame, &(int){0});
2989 }
2990 
2991 int attribute_align_arg avcodec_receive_packet(AVCodecContext *avctx, AVPacket *avpkt)
2992 {
2993  av_packet_unref(avpkt);
2994 
2995  if (!avcodec_is_open(avctx) || !av_codec_is_encoder(avctx->codec))
2996  return AVERROR(EINVAL);
2997 
2998  if (avctx->codec->receive_packet) {
2999  if (avctx->internal->draining && !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
3000  return AVERROR_EOF;
3001  return avctx->codec->receive_packet(avctx, avpkt);
3002  }
3003 
3004  // Emulation via old API.
3005 
3006  if (!avctx->internal->buffer_pkt_valid) {
3007  int got_packet;
3008  int ret;
3009  if (!avctx->internal->draining)
3010  return AVERROR(EAGAIN);
3011  ret = do_encode(avctx, NULL, &got_packet);
3012  if (ret < 0)
3013  return ret;
3014  if (ret >= 0 && !got_packet)
3015  return AVERROR_EOF;
3016  }
3017 
3018  av_packet_move_ref(avpkt, avctx->internal->buffer_pkt);
3019  avctx->internal->buffer_pkt_valid = 0;
3020  return 0;
3021 }
3022 
3024 {
3025  int i;
3026 
3027  if (!avctx)
3028  return 0;
3029 
3030  if (avcodec_is_open(avctx)) {
3031  FramePool *pool = avctx->internal->pool;
3032  if (CONFIG_FRAME_THREAD_ENCODER &&
3033  avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
3035  }
3036  if (HAVE_THREADS && avctx->internal->thread_ctx)
3037  ff_thread_free(avctx);
3038  if (avctx->codec && avctx->codec->close)
3039  avctx->codec->close(avctx);
3040  avctx->internal->byte_buffer_size = 0;
3041  av_freep(&avctx->internal->byte_buffer);
3042  av_frame_free(&avctx->internal->to_free);
3045  for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
3046  av_buffer_pool_uninit(&pool->pools[i]);
3047  av_freep(&avctx->internal->pool);
3048 
3049  if (avctx->hwaccel && avctx->hwaccel->uninit)
3050  avctx->hwaccel->uninit(avctx);
3052 
3053  av_freep(&avctx->internal);
3054  }
3055 
3056  for (i = 0; i < avctx->nb_coded_side_data; i++)
3057  av_freep(&avctx->coded_side_data[i].data);
3058  av_freep(&avctx->coded_side_data);
3059  avctx->nb_coded_side_data = 0;
3060 
3061  av_buffer_unref(&avctx->hw_frames_ctx);
3062 
3063  if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
3064  av_opt_free(avctx->priv_data);
3065  av_opt_free(avctx);
3066  av_freep(&avctx->priv_data);
3067  if (av_codec_is_encoder(avctx->codec)) {
3068  av_freep(&avctx->extradata);
3069 #if FF_API_CODED_FRAME
3071  av_frame_free(&avctx->coded_frame);
3073 #endif
3074  }
3075  avctx->codec = NULL;
3076  avctx->active_thread_type = 0;
3077 
3078  return 0;
3079 }
3080 
3082 {
3083  switch(id){
3084  //This is for future deprecatec codec ids, its empty since
3085  //last major bump but will fill up again over time, please don't remove it
3086  default : return id;
3087  }
3088 }
3089 
3090 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
3091 {
3092  AVCodec *p, *experimental = NULL;
3093  p = first_avcodec;
3094  id= remap_deprecated_codec_id(id);
3095  while (p) {
3096  if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
3097  p->id == id) {
3098  if (p->capabilities & AV_CODEC_CAP_EXPERIMENTAL && !experimental) {
3099  experimental = p;
3100  } else
3101  return p;
3102  }
3103  p = p->next;
3104  }
3105  return experimental;
3106 }
3107 
3109 {
3110  return find_encdec(id, 1);
3111 }
3112 
3114 {
3115  AVCodec *p;
3116  if (!name)
3117  return NULL;
3118  p = first_avcodec;
3119  while (p) {
3120  if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
3121  return p;
3122  p = p->next;
3123  }
3124  return NULL;
3125 }
3126 
3128 {
3129  return find_encdec(id, 0);
3130 }
3131 
3133 {
3134  AVCodec *p;
3135  if (!name)
3136  return NULL;
3137  p = first_avcodec;
3138  while (p) {
3139  if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
3140  return p;
3141  p = p->next;
3142  }
3143  return NULL;
3144 }
3145 
3146 const char *avcodec_get_name(enum AVCodecID id)
3147 {
3148  const AVCodecDescriptor *cd;
3149  AVCodec *codec;
3150 
3151  if (id == AV_CODEC_ID_NONE)
3152  return "none";
3153  cd = avcodec_descriptor_get(id);
3154  if (cd)
3155  return cd->name;
3156  av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
3157  codec = avcodec_find_decoder(id);
3158  if (codec)
3159  return codec->name;
3160  codec = avcodec_find_encoder(id);
3161  if (codec)
3162  return codec->name;
3163  return "unknown_codec";
3164 }
3165 
3166 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
3167 {
3168  int i, len, ret = 0;
3169 
3170 #define TAG_PRINT(x) \
3171  (((x) >= '0' && (x) <= '9') || \
3172  ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
3173  ((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_'))
3174 
3175  for (i = 0; i < 4; i++) {
3176  len = snprintf(buf, buf_size,
3177  TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
3178  buf += len;
3179  buf_size = buf_size > len ? buf_size - len : 0;
3180  ret += len;
3181  codec_tag >>= 8;
3182  }
3183  return ret;
3184 }
3185 
3186 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
3187 {
3188  const char *codec_type;
3189  const char *codec_name;
3190  const char *profile = NULL;
3191  int64_t bitrate;
3192  int new_line = 0;
3193  AVRational display_aspect_ratio;
3194  const char *separator = enc->dump_separator ? (const char *)enc->dump_separator : ", ";
3195 
3196  if (!buf || buf_size <= 0)
3197  return;
3198  codec_type = av_get_media_type_string(enc->codec_type);
3199  codec_name = avcodec_get_name(enc->codec_id);
3200  profile = avcodec_profile_name(enc->codec_id, enc->profile);
3201 
3202  snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown",
3203  codec_name);
3204  buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
3205 
3206  if (enc->codec && strcmp(enc->codec->name, codec_name))
3207  snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name);
3208 
3209  if (profile)
3210  snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
3211  if ( enc->codec_type == AVMEDIA_TYPE_VIDEO
3213  && enc->refs)
3214  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3215  ", %d reference frame%s",
3216  enc->refs, enc->refs > 1 ? "s" : "");
3217 
3218  if (enc->codec_tag) {
3219  char tag_buf[32];
3220  av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
3221  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3222  " (%s / 0x%04X)", tag_buf, enc->codec_tag);
3223  }
3224 
3225  switch (enc->codec_type) {
3226  case AVMEDIA_TYPE_VIDEO:
3227  {
3228  char detail[256] = "(";
3229 
3230  av_strlcat(buf, separator, buf_size);
3231 
3232  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3233  "%s", enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
3235  if (enc->bits_per_raw_sample && enc->pix_fmt != AV_PIX_FMT_NONE &&
3237  av_strlcatf(detail, sizeof(detail), "%d bpc, ", enc->bits_per_raw_sample);
3239  av_strlcatf(detail, sizeof(detail), "%s, ",
3241 
3242  if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
3244  enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
3245  if (enc->colorspace != (int)enc->color_primaries ||
3246  enc->colorspace != (int)enc->color_trc) {
3247  new_line = 1;
3248  av_strlcatf(detail, sizeof(detail), "%s/%s/%s, ",
3252  } else
3253  av_strlcatf(detail, sizeof(detail), "%s, ",
3255  }
3256 
3257  if (enc->field_order != AV_FIELD_UNKNOWN) {
3258  const char *field_order = "progressive";
3259  if (enc->field_order == AV_FIELD_TT)
3260  field_order = "top first";
3261  else if (enc->field_order == AV_FIELD_BB)
3262  field_order = "bottom first";
3263  else if (enc->field_order == AV_FIELD_TB)
3264  field_order = "top coded first (swapped)";
3265  else if (enc->field_order == AV_FIELD_BT)
3266  field_order = "bottom coded first (swapped)";
3267 
3268  av_strlcatf(detail, sizeof(detail), "%s, ", field_order);
3269  }
3270 
3271  if (av_log_get_level() >= AV_LOG_VERBOSE &&
3273  av_strlcatf(detail, sizeof(detail), "%s, ",
3275 
3276  if (strlen(detail) > 1) {
3277  detail[strlen(detail) - 2] = 0;
3278  av_strlcatf(buf, buf_size, "%s)", detail);
3279  }
3280  }
3281 
3282  if (enc->width) {
3283  av_strlcat(buf, new_line ? separator : ", ", buf_size);
3284 
3285  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3286  "%dx%d",
3287  enc->width, enc->height);
3288 
3289  if (av_log_get_level() >= AV_LOG_VERBOSE &&
3290  (enc->width != enc->coded_width ||
3291  enc->height != enc->coded_height))
3292  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3293  " (%dx%d)", enc->coded_width, enc->coded_height);
3294 
3295  if (enc->sample_aspect_ratio.num) {
3296  av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3297  enc->width * (int64_t)enc->sample_aspect_ratio.num,
3298  enc->height * (int64_t)enc->sample_aspect_ratio.den,
3299  1024 * 1024);
3300  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3301  " [SAR %d:%d DAR %d:%d]",
3303  display_aspect_ratio.num, display_aspect_ratio.den);
3304  }
3305  if (av_log_get_level() >= AV_LOG_DEBUG) {
3306  int g = av_gcd(enc->time_base.num, enc->time_base.den);
3307  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3308  ", %d/%d",
3309  enc->time_base.num / g, enc->time_base.den / g);
3310  }
3311  }
3312  if (encode) {
3313  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3314  ", q=%d-%d", enc->qmin, enc->qmax);
3315  } else {
3317  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3318  ", Closed Captions");
3320  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3321  ", lossless");
3322  }
3323  break;
3324  case AVMEDIA_TYPE_AUDIO:
3325  av_strlcat(buf, separator, buf_size);
3326 
3327  if (enc->sample_rate) {
3328  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3329  "%d Hz, ", enc->sample_rate);
3330  }
3331  av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
3332  if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
3333  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3334  ", %s", av_get_sample_fmt_name(enc->sample_fmt));
3335  }
3336  if ( enc->bits_per_raw_sample > 0
3338  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3339  " (%d bit)", enc->bits_per_raw_sample);
3340  if (av_log_get_level() >= AV_LOG_VERBOSE) {
3341  if (enc->initial_padding)
3342  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3343  ", delay %d", enc->initial_padding);
3344  if (enc->trailing_padding)
3345  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3346  ", padding %d", enc->trailing_padding);
3347  }
3348  break;
3349  case AVMEDIA_TYPE_DATA:
3350  if (av_log_get_level() >= AV_LOG_DEBUG) {
3351  int g = av_gcd(enc->time_base.num, enc->time_base.den);
3352  if (g)
3353  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3354  ", %d/%d",
3355  enc->time_base.num / g, enc->time_base.den / g);
3356  }
3357  break;
3358  case AVMEDIA_TYPE_SUBTITLE:
3359  if (enc->width)
3360  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3361  ", %dx%d", enc->width, enc->height);
3362  break;
3363  default:
3364  return;
3365  }
3366  if (encode) {
3367  if (enc->flags & AV_CODEC_FLAG_PASS1)
3368  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3369  ", pass 1");
3370  if (enc->flags & AV_CODEC_FLAG_PASS2)
3371  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3372  ", pass 2");
3373  }
3374  bitrate = get_bit_rate(enc);
3375  if (bitrate != 0) {
3376  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3377  ", %"PRId64" kb/s", bitrate / 1000);
3378  } else if (enc->rc_max_rate > 0) {
3379  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3380  ", max. %"PRId64" kb/s", (int64_t)enc->rc_max_rate / 1000);
3381  }
3382 }
3383 
3384 const char *av_get_profile_name(const AVCodec *codec, int profile)
3385 {
3386  const AVProfile *p;
3387  if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
3388  return NULL;
3389 
3390  for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
3391  if (p->profile == profile)
3392  return p->name;
3393 
3394  return NULL;
3395 }
3396 
3398 {
3399  const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
3400  const AVProfile *p;
3401 
3402  if (profile == FF_PROFILE_UNKNOWN || !desc || !desc->profiles)
3403  return NULL;
3404 
3405  for (p = desc->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
3406  if (p->profile == profile)
3407  return p->name;
3408 
3409  return NULL;
3410 }
3411 
3412 unsigned avcodec_version(void)
3413 {
3414 // av_assert0(AV_CODEC_ID_V410==164);
3417 // av_assert0(AV_CODEC_ID_BMV_AUDIO==86071);
3418  av_assert0(AV_CODEC_ID_SRT==94216);
3420 
3421  return LIBAVCODEC_VERSION_INT;
3422 }
3423 
3424 const char *avcodec_configuration(void)
3425 {
3426  return FFMPEG_CONFIGURATION;
3427 }
3428 
3429 const char *avcodec_license(void)
3430 {
3431 #define LICENSE_PREFIX "libavcodec license: "
3432  return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
3433 }
3434 
3436 {
3437  avctx->internal->draining = 0;
3438  avctx->internal->draining_done = 0;
3441  avctx->internal->buffer_pkt_valid = 0;
3442 
3443  if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
3444  ff_thread_flush(avctx);
3445  else if (avctx->codec->flush)
3446  avctx->codec->flush(avctx);
3447 
3448  avctx->pts_correction_last_pts =
3449  avctx->pts_correction_last_dts = INT64_MIN;
3450 
3451  if (!avctx->refcounted_frames)
3452  av_frame_unref(avctx->internal->to_free);
3453 }
3454 
3456 {
3457  switch (codec_id) {
3458  case AV_CODEC_ID_8SVX_EXP:
3459  case AV_CODEC_ID_8SVX_FIB:
3460  case AV_CODEC_ID_ADPCM_CT:
3468  return 4;
3469  case AV_CODEC_ID_DSD_LSBF:
3470  case AV_CODEC_ID_DSD_MSBF:
3473  case AV_CODEC_ID_PCM_ALAW:
3474  case AV_CODEC_ID_PCM_MULAW:
3475  case AV_CODEC_ID_PCM_S8:
3477  case AV_CODEC_ID_PCM_U8:
3478  case AV_CODEC_ID_PCM_ZORK:
3479  case AV_CODEC_ID_SDX2_DPCM:
3480  return 8;
3481  case AV_CODEC_ID_PCM_S16BE:
3483  case AV_CODEC_ID_PCM_S16LE:
3485  case AV_CODEC_ID_PCM_U16BE:
3486  case AV_CODEC_ID_PCM_U16LE:
3487  return 16;
3489  case AV_CODEC_ID_PCM_S24BE:
3490  case AV_CODEC_ID_PCM_S24LE:
3492  case AV_CODEC_ID_PCM_U24BE:
3493  case AV_CODEC_ID_PCM_U24LE:
3494  return 24;
3495  case AV_CODEC_ID_PCM_S32BE:
3496  case AV_CODEC_ID_PCM_S32LE:
3498  case AV_CODEC_ID_PCM_U32BE:
3499  case AV_CODEC_ID_PCM_U32LE:
3500  case AV_CODEC_ID_PCM_F32BE:
3501  case AV_CODEC_ID_PCM_F32LE:
3502  return 32;
3503  case AV_CODEC_ID_PCM_F64BE:
3504  case AV_CODEC_ID_PCM_F64LE:
3505  case AV_CODEC_ID_PCM_S64BE:
3506  case AV_CODEC_ID_PCM_S64LE:
3507  return 64;
3508  default:
3509  return 0;
3510  }
3511 }
3512 
3514 {
3515  static const enum AVCodecID map[AV_SAMPLE_FMT_NB][2] = {
3527  };
3528  if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB)
3529  return AV_CODEC_ID_NONE;
3530  if (be < 0 || be > 1)
3531  be = AV_NE(1, 0);
3532  return map[fmt][be];
3533 }
3534 
3536 {
3537  switch (codec_id) {
3539  return 2;
3541  return 3;
3545  case AV_CODEC_ID_ADPCM_SWF:
3546  case AV_CODEC_ID_ADPCM_MS:
3547  return 4;
3548  default:
3549  return av_get_exact_bits_per_sample(codec_id);
3550  }
3551 }
3552 
3553 static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba,
3554  uint32_t tag, int bits_per_coded_sample, int64_t bitrate,
3555  uint8_t * extradata, int frame_size, int frame_bytes)
3556 {
3558  int framecount = (ba > 0 && frame_bytes / ba > 0) ? frame_bytes / ba : 1;
3559 
3560  /* codecs with an exact constant bits per sample */
3561  if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
3562  return (frame_bytes * 8LL) / (bps * ch);
3563  bps = bits_per_coded_sample;
3564 
3565  /* codecs with a fixed packet duration */
3566  switch (id) {
3567  case AV_CODEC_ID_ADPCM_ADX: return 32;
3568  case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
3569  case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
3570  case AV_CODEC_ID_AMR_NB:
3571  case AV_CODEC_ID_EVRC:
3572  case AV_CODEC_ID_GSM:
3573  case AV_CODEC_ID_QCELP:
3574  case AV_CODEC_ID_RA_288: return 160;
3575  case AV_CODEC_ID_AMR_WB:
3576  case AV_CODEC_ID_GSM_MS: return 320;
3577  case AV_CODEC_ID_MP1: return 384;
3578  case AV_CODEC_ID_ATRAC1: return 512;
3579  case AV_CODEC_ID_ATRAC3: return 1024 * framecount;
3580  case AV_CODEC_ID_ATRAC3P: return 2048;
3581  case AV_CODEC_ID_MP2:
3582  case AV_CODEC_ID_MUSEPACK7: return 1152;
3583  case AV_CODEC_ID_AC3: return 1536;
3584  }
3585 
3586  if (sr > 0) {
3587  /* calc from sample rate */
3588  if (id == AV_CODEC_ID_TTA)
3589  return 256 * sr / 245;
3590  else if (id == AV_CODEC_ID_DST)
3591  return 588 * sr / 44100;
3592 
3593  if (ch > 0) {
3594  /* calc from sample rate and channels */
3595  if (id == AV_CODEC_ID_BINKAUDIO_DCT)
3596  return (480 << (sr / 22050)) / ch;
3597  }
3598  }
3599 
3600  if (ba > 0) {
3601  /* calc from block_align */
3602  if (id == AV_CODEC_ID_SIPR) {
3603  switch (ba) {
3604  case 20: return 160;
3605  case 19: return 144;
3606  case 29: return 288;
3607  case 37: return 480;
3608  }
3609  } else if (id == AV_CODEC_ID_ILBC) {
3610  switch (ba) {
3611  case 38: return 160;
3612  case 50: return 240;
3613  }
3614  }
3615  }
3616 
3617  if (frame_bytes > 0) {
3618  /* calc from frame_bytes only */
3619  if (id == AV_CODEC_ID_TRUESPEECH)
3620  return 240 * (frame_bytes / 32);
3621  if (id == AV_CODEC_ID_NELLYMOSER)
3622  return 256 * (frame_bytes / 64);
3623  if (id == AV_CODEC_ID_RA_144)
3624  return 160 * (frame_bytes / 20);
3625  if (id == AV_CODEC_ID_G723_1)
3626  return 240 * (frame_bytes / 24);
3627 
3628  if (bps > 0) {
3629  /* calc from frame_bytes and bits_per_coded_sample */
3630  if (id == AV_CODEC_ID_ADPCM_G726)
3631  return frame_bytes * 8 / bps;
3632  }
3633 
3634  if (ch > 0 && ch < INT_MAX/16) {
3635  /* calc from frame_bytes and channels */
3636  switch (id) {
3637  case AV_CODEC_ID_ADPCM_AFC:
3638  return frame_bytes / (9 * ch) * 16;
3639  case AV_CODEC_ID_ADPCM_PSX:
3640  case AV_CODEC_ID_ADPCM_DTK:
3641  return frame_bytes / (16 * ch) * 28;
3642  case AV_CODEC_ID_ADPCM_4XM:
3645  return (frame_bytes - 4 * ch) * 2 / ch;
3647  return (frame_bytes - 4) * 2 / ch;
3649  return (frame_bytes - 8) * 2 / ch;
3650  case AV_CODEC_ID_ADPCM_THP:
3652  if (extradata)
3653  return frame_bytes * 14 / (8 * ch);
3654  break;
3655  case AV_CODEC_ID_ADPCM_XA:
3656  return (frame_bytes / 128) * 224 / ch;
3658  return (frame_bytes - 6 - ch) / ch;
3659  case AV_CODEC_ID_ROQ_DPCM:
3660  return (frame_bytes - 8) / ch;
3661  case AV_CODEC_ID_XAN_DPCM:
3662  return (frame_bytes - 2 * ch) / ch;
3663  case AV_CODEC_ID_MACE3:
3664  return 3 * frame_bytes / ch;
3665  case AV_CODEC_ID_MACE6:
3666  return 6 * frame_bytes / ch;
3667  case AV_CODEC_ID_PCM_LXF:
3668  return 2 * (frame_bytes / (5 * ch));
3669  case AV_CODEC_ID_IAC:
3670  case AV_CODEC_ID_IMC:
3671  return 4 * frame_bytes / ch;
3672  }
3673 
3674  if (tag) {
3675  /* calc from frame_bytes, channels, and codec_tag */
3676  if (id == AV_CODEC_ID_SOL_DPCM) {
3677  if (tag == 3)
3678  return frame_bytes / ch;
3679  else
3680  return frame_bytes * 2 / ch;
3681  }
3682  }
3683 
3684  if (ba > 0) {
3685  /* calc from frame_bytes, channels, and block_align */
3686  int blocks = frame_bytes / ba;
3687  switch (id) {
3689  if (bps < 2 || bps > 5)
3690  return 0;
3691  return blocks * (1 + (ba - 4 * ch) / (bps * ch) * 8);
3693  return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
3695  return blocks * (1 + (ba - 4 * ch) * 2 / ch);
3697  return blocks * ((ba - 4 * ch) * 2 / ch);
3698  case AV_CODEC_ID_ADPCM_MS:
3699  return blocks * (2 + (ba - 7 * ch) * 2 / ch);
3701  return blocks * (ba - 16) * 2 / ch;
3702  }
3703  }
3704 
3705  if (bps > 0) {
3706  /* calc from frame_bytes, channels, and bits_per_coded_sample */
3707  switch (id) {
3708  case AV_CODEC_ID_PCM_DVD:
3709  if(bps<4)
3710  return 0;
3711  return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
3713  if(bps<4)
3714  return 0;
3715  return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
3716  case AV_CODEC_ID_S302M:
3717  return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
3718  }
3719  }
3720  }
3721  }
3722 
3723  /* Fall back on using frame_size */
3724  if (frame_size > 1 && frame_bytes)
3725  return frame_size;
3726 
3727  //For WMA we currently have no other means to calculate duration thus we
3728  //do it here by assuming CBR, which is true for all known cases.
3729  if (bitrate > 0 && frame_bytes > 0 && sr > 0 && ba > 1) {
3730  if (id == AV_CODEC_ID_WMAV1 || id == AV_CODEC_ID_WMAV2)
3731  return (frame_bytes * 8LL * sr) / bitrate;
3732  }
3733 
3734  return 0;
3735 }
3736 
3737 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
3738 {
3739  return get_audio_frame_duration(avctx->codec_id, avctx->sample_rate,
3740  avctx->channels, avctx->block_align,
3741  avctx->codec_tag, avctx->bits_per_coded_sample,
3742  avctx->bit_rate, avctx->extradata, avctx->frame_size,
3743  frame_bytes);
3744 }
3745 
3747 {
3748  return get_audio_frame_duration(par->codec_id, par->sample_rate,
3749  par->channels, par->block_align,
3750  par->codec_tag, par->bits_per_coded_sample,
3751  par->bit_rate, par->extradata, par->frame_size,
3752  frame_bytes);
3753 }
3754 
3755 #if !HAVE_THREADS
3757 {
3758  return -1;
3759 }
3760 
3761 #endif
3762 
3763 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
3764 {
3765  unsigned int n = 0;
3766 
3767  while (v >= 0xff) {
3768  *s++ = 0xff;
3769  v -= 0xff;
3770  n++;
3771  }
3772  *s = v;
3773  n++;
3774  return n;
3775 }
3776 
3777 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
3778 {
3779  int i;
3780  for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
3781  return i;
3782 }
3783 
3784 #if FF_API_MISSING_SAMPLE
3786 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
3787 {
3788  av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your FFmpeg "
3789  "version to the newest one from Git. If the problem still "
3790  "occurs, it means that your file has a feature which has not "
3791  "been implemented.\n", feature);
3792  if(want_sample)
3794 }
3795 
3796 void av_log_ask_for_sample(void *avc, const char *msg, ...)
3797 {
3798  va_list argument_list;
3799 
3800  va_start(argument_list, msg);
3801 
3802  if (msg)
3803  av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
3804  av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
3805  "of this file to ftp://upload.ffmpeg.org/incoming/ "
3806  "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)\n");
3807 
3808  va_end(argument_list);
3809 }
3811 #endif /* FF_API_MISSING_SAMPLE */
3812 
3815 
3817 {
3818  AVHWAccel **p = last_hwaccel;
3819  hwaccel->next = NULL;
3820  while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, hwaccel))
3821  p = &(*p)->next;
3822  last_hwaccel = &hwaccel->next;
3823 }
3824 
3826 {
3827  return hwaccel ? hwaccel->next : first_hwaccel;
3828 }
3829 
3830 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
3831 {
3832  if (lockmgr_cb) {
3833  // There is no good way to rollback a failure to destroy the
3834  // mutex, so we ignore failures.
3837  lockmgr_cb = NULL;
3838  codec_mutex = NULL;
3839  avformat_mutex = NULL;
3840  }
3841 
3842  if (cb) {
3843  void *new_codec_mutex = NULL;
3844  void *new_avformat_mutex = NULL;
3845  int err;
3846  if (err = cb(&new_codec_mutex, AV_LOCK_CREATE)) {
3847  return err > 0 ? AVERROR_UNKNOWN : err;
3848  }
3849  if (err = cb(&new_avformat_mutex, AV_LOCK_CREATE)) {
3850  // Ignore failures to destroy the newly created mutex.
3851  cb(&new_codec_mutex, AV_LOCK_DESTROY);
3852  return err > 0 ? AVERROR_UNKNOWN : err;
3853  }
3854  lockmgr_cb = cb;
3855  codec_mutex = new_codec_mutex;
3856  avformat_mutex = new_avformat_mutex;
3857  }
3858 
3859  return 0;
3860 }
3861 
3862 int ff_lock_avcodec(AVCodecContext *log_ctx, const AVCodec *codec)
3863 {
3864  if (codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE || !codec->init)
3865  return 0;
3866 
3867  if (lockmgr_cb) {
3869  return -1;
3870  }
3871 
3873  av_log(log_ctx, AV_LOG_ERROR,
3874  "Insufficient thread locking. At least %d threads are "
3875  "calling avcodec_open2() at the same time right now.\n",
3877  if (!lockmgr_cb)
3878  av_log(log_ctx, AV_LOG_ERROR, "No lock manager is set, please see av_lockmgr_register()\n");
3879  ff_avcodec_locked = 1;
3880  ff_unlock_avcodec(codec);
3881  return AVERROR(EINVAL);
3882  }
3884  ff_avcodec_locked = 1;
3885  return 0;
3886 }
3887 
3888 int ff_unlock_avcodec(const AVCodec *codec)
3889 {
3890  if (codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE || !codec->init)
3891  return 0;
3892 
3894  ff_avcodec_locked = 0;
3896  if (lockmgr_cb) {
3898  return -1;
3899  }
3900 
3901  return 0;
3902 }
3903 
3905 {
3906  if (lockmgr_cb) {
3908  return -1;
3909  }
3910  return 0;
3911 }
3912 
3914 {
3915  if (lockmgr_cb) {
3917  return -1;
3918  }
3919  return 0;
3920 }
3921 
3922 unsigned int avpriv_toupper4(unsigned int x)
3923 {
3924  return av_toupper(x & 0xFF) +
3925  (av_toupper((x >> 8) & 0xFF) << 8) +
3926  (av_toupper((x >> 16) & 0xFF) << 16) +
3927 ((unsigned)av_toupper((x >> 24) & 0xFF) << 24);
3928 }
3929 
3931 {
3932  int ret;
3933 
3934  dst->owner = src->owner;
3935 
3936  ret = av_frame_ref(dst->f, src->f);
3937  if (ret < 0)
3938  return ret;
3939 
3940  av_assert0(!dst->progress);
3941 
3942  if (src->progress &&
3943  !(dst->progress = av_buffer_ref(src->progress))) {
3944  ff_thread_release_buffer(dst->owner, dst);
3945  return AVERROR(ENOMEM);
3946  }
3947 
3948  return 0;
3949 }
3950 
3951 #if !HAVE_THREADS
3952 
3954 {
3955  return ff_get_format(avctx, fmt);
3956 }
3957 
3959 {
3960  f->owner = avctx;
3961  return ff_get_buffer(avctx, f->f, flags);
3962 }
3963 
3965 {
3966  if (f->f)
3967  av_frame_unref(f->f);
3968 }
3969 
3971 {
3972 }
3973 
3974 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
3975 {
3976 }
3977 
3978 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
3979 {
3980 }
3981 
3983 {
3984  return 1;
3985 }
3986 
3988 {
3989  return 0;
3990 }
3991 
3993 {
3994 }
3995 
3996 void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
3997 {
3998 }
3999 
4000 void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n)
4001 {
4002 }
4003 
4004 #endif
4005 
4007 {
4008  return !!s->internal;
4009 }
4010 
4011 int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf)
4012 {
4013  int ret;
4014  char *str;
4015 
4016  ret = av_bprint_finalize(buf, &str);
4017  if (ret < 0)
4018  return ret;
4019  if (!av_bprint_is_complete(buf)) {
4020  av_free(str);
4021  return AVERROR(ENOMEM);
4022  }
4023 
4024  avctx->extradata = str;
4025  /* Note: the string is NUL terminated (so extradata can be read as a
4026  * string), but the ending character is not accounted in the size (in
4027  * binary formats you are likely not supposed to mux that character). When
4028  * extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
4029  * zeros. */
4030  avctx->extradata_size = buf->len;
4031  return 0;
4032 }
4033 
4034 const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
4035  const uint8_t *end,
4036  uint32_t *av_restrict state)
4037 {
4038  int i;
4039 
4040  av_assert0(p <= end);
4041  if (p >= end)
4042  return end;
4043 
4044  for (i = 0; i < 3; i++) {
4045  uint32_t tmp = *state << 8;
4046  *state = tmp + *(p++);
4047  if (tmp == 0x100 || p == end)
4048  return p;
4049  }
4050 
4051  while (p < end) {
4052  if (p[-1] > 1 ) p += 3;
4053  else if (p[-2] ) p += 2;
4054  else if (p[-3]|(p[-1]-1)) p++;
4055  else {
4056  p++;
4057  break;
4058  }
4059  }
4060 
4061  p = FFMIN(p, end) - 4;
4062  *state = AV_RB32(p);
4063 
4064  return p + 4;
4065 }
4066 
4068 {
4069  AVCPBProperties *props = av_mallocz(sizeof(AVCPBProperties));
4070  if (!props)
4071  return NULL;
4072 
4073  if (size)
4074  *size = sizeof(*props);
4075 
4076  props->vbv_delay = UINT64_MAX;
4077 
4078  return props;
4079 }
4080 
4082 {
4084  AVCPBProperties *props;
4085  size_t size;
4086 
4087  props = av_cpb_properties_alloc(&size);
4088  if (!props)
4089  return NULL;
4090 
4091  tmp = av_realloc_array(avctx->coded_side_data, avctx->nb_coded_side_data + 1, sizeof(*tmp));
4092  if (!tmp) {
4093  av_freep(&props);
4094  return NULL;
4095  }
4096 
4097  avctx->coded_side_data = tmp;
4098  avctx->nb_coded_side_data++;
4099 
4101  avctx->coded_side_data[avctx->nb_coded_side_data - 1].data = (uint8_t*)props;
4102  avctx->coded_side_data[avctx->nb_coded_side_data - 1].size = size;
4103 
4104  return props;
4105 }
4106 
4108 {
4109  av_freep(&par->extradata);
4110 
4111  memset(par, 0, sizeof(*par));
4112 
4114  par->codec_id = AV_CODEC_ID_NONE;
4115  par->format = -1;
4122  par->sample_aspect_ratio = (AVRational){ 0, 1 };
4123  par->profile = FF_PROFILE_UNKNOWN;
4124  par->level = FF_LEVEL_UNKNOWN;
4125 }
4126 
4128 {
4129  AVCodecParameters *par = av_mallocz(sizeof(*par));
4130 
4131  if (!par)
4132  return NULL;
4134  return par;
4135 }
4136 
4138 {
4139  AVCodecParameters *par = *ppar;
4140 
4141  if (!par)
4142  return;
4144 
4145  av_freep(ppar);
4146 }
4147 
4149 {
4151  memcpy(dst, src, sizeof(*dst));
4152 
4153  dst->extradata = NULL;
4154  dst->extradata_size = 0;
4155  if (src->extradata) {
4157  if (!dst->extradata)
4158  return AVERROR(ENOMEM);
4159  memcpy(dst->extradata, src->extradata, src->extradata_size);
4160  dst->extradata_size = src->extradata_size;
4161  }
4162 
4163  return 0;
4164 }
4165 
4167  const AVCodecContext *codec)
4168 {
4170 
4171  par->codec_type = codec->codec_type;
4172  par->codec_id = codec->codec_id;
4173  par->codec_tag = codec->codec_tag;
4174 
4175  par->bit_rate = codec->bit_rate;
4178  par->profile = codec->profile;
4179  par->level = codec->level;
4180 
4181  switch (par->codec_type) {
4182  case AVMEDIA_TYPE_VIDEO:
4183  par->format = codec->pix_fmt;
4184  par->width = codec->width;
4185  par->height = codec->height;
4186  par->field_order = codec->field_order;
4187  par->color_range = codec->color_range;
4188  par->color_primaries = codec->color_primaries;
4189  par->color_trc = codec->color_trc;
4190  par->color_space = codec->colorspace;
4193  par->video_delay = codec->has_b_frames;
4194  break;
4195  case AVMEDIA_TYPE_AUDIO:
4196  par->format = codec->sample_fmt;
4197  par->channel_layout = codec->channel_layout;
4198  par->channels = codec->channels;
4199  par->sample_rate = codec->sample_rate;
4200  par->block_align = codec->block_align;
4201  par->frame_size = codec->frame_size;
4202  par->initial_padding = codec->initial_padding;
4203  par->trailing_padding = codec->trailing_padding;
4204  par->seek_preroll = codec->seek_preroll;
4205  break;
4206  case AVMEDIA_TYPE_SUBTITLE:
4207  par->width = codec->width;
4208  par->height = codec->height;
4209  break;
4210  }
4211 
4212  if (codec->extradata) {
4214  if (!par->extradata)
4215  return AVERROR(ENOMEM);
4216  memcpy(par->extradata, codec->extradata, codec->extradata_size);
4217  par->extradata_size = codec->extradata_size;
4218  }
4219 
4220  return 0;
4221 }
4222 
4224  const AVCodecParameters *par)
4225 {
4226  codec->codec_type = par->codec_type;
4227  codec->codec_id = par->codec_id;
4228  codec->codec_tag = par->codec_tag;
4229 
4230  codec->bit_rate = par->bit_rate;
4233  codec->profile = par->profile;
4234  codec->level = par->level;
4235 
4236  switch (par->codec_type) {
4237  case AVMEDIA_TYPE_VIDEO:
4238  codec->pix_fmt = par->format;
4239  codec->width = par->width;
4240  codec->height = par->height;
4241  codec->field_order = par->field_order;
4242  codec->color_range = par->color_range;
4243  codec->color_primaries = par->color_primaries;
4244  codec->color_trc = par->color_trc;
4245  codec->colorspace = par->color_space;
4248  codec->has_b_frames = par->video_delay;
4249  break;
4250  case AVMEDIA_TYPE_AUDIO:
4251  codec->sample_fmt = par->format;
4252  codec->channel_layout = par->channel_layout;
4253  codec->channels = par->channels;
4254  codec->sample_rate = par->sample_rate;
4255  codec->block_align = par->block_align;
4256  codec->frame_size = par->frame_size;
4257  codec->delay =
4258  codec->initial_padding = par->initial_padding;
4259  codec->trailing_padding = par->trailing_padding;
4260  codec->seek_preroll = par->seek_preroll;
4261  break;
4262  case AVMEDIA_TYPE_SUBTITLE:
4263  codec->width = par->width;
4264  codec->height = par->height;
4265  break;
4266  }
4267 
4268  if (par->extradata) {
4269  av_freep(&codec->extradata);
4271  if (!codec->extradata)
4272  return AVERROR(ENOMEM);
4273  memcpy(codec->extradata, par->extradata, par->extradata_size);
4274  codec->extradata_size = par->extradata_size;
4275  }
4276 
4277  return 0;
4278 }
4279 
4280 int ff_alloc_a53_sei(const AVFrame *frame, size_t prefix_len,
4281  void **data, size_t *sei_size)
4282 {
4283  AVFrameSideData *side_data = NULL;
4284  uint8_t *sei_data;
4285 
4286  if (frame)
4287  side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_A53_CC);
4288 
4289  if (!side_data) {
4290  *data = NULL;
4291  return 0;
4292  }
4293 
4294  *sei_size = side_data->size + 11;
4295  *data = av_mallocz(*sei_size + prefix_len);
4296  if (!*data)
4297  return AVERROR(ENOMEM);
4298  sei_data = (uint8_t*)*data + prefix_len;
4299 
4300  // country code
4301  sei_data[0] = 181;
4302  sei_data[1] = 0;
4303  sei_data[2] = 49;
4304 
4305  /**
4306  * 'GA94' is standard in North America for ATSC, but hard coding
4307  * this style may not be the right thing to do -- other formats
4308  * do exist. This information is not available in the side_data
4309  * so we are going with this right now.
4310  */
4311  AV_WL32(sei_data + 3, MKTAG('G', 'A', '9', '4'));
4312  sei_data[7] = 3;
4313  sei_data[8] = ((side_data->size/3) & 0x1f) | 0x40;
4314  sei_data[9] = 0;
4315 
4316  memcpy(sei_data + 10, side_data->data, side_data->size);
4317 
4318  sei_data[side_data->size+10] = 255;
4319 
4320  return 0;
4321 }
#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:2900
static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
Definition: utils.c:2089
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:4071
float, planar
Definition: samplefmt.h:69
#define UTF8_MAX_BYTES
Definition: utils.c:2492
#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:3440
#define NULL
Definition: coverity.c:32
const struct AVCodec * codec
Definition: avcodec.h:1685
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:3376
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:4062
static int64_t get_bit_rate(AVCodecContext *ctx)
Definition: utils.c:1206
const AVCodecDescriptor * codec_descriptor
AVCodecDescriptor Code outside libavcodec should access this field using: av_codec_{get,set}_codec_descriptor(avctx)
Definition: avcodec.h:3401
static AVCodec * find_encdec(enum AVCodecID id, int encoder)
Definition: utils.c:3090
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:4069
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
enum AVCodecID codec_id
Definition: ffmpeg_vaapi.c:149
Number of sample formats. DO NOT USE if linking dynamically.
Definition: samplefmt.h:74
static enum AVPixelFormat pix_fmt
#define AV_NUM_DATA_POINTERS
Definition: frame.h:185
void av_bprintf(AVBPrint *buf, const char *fmt,...)
Definition: bprint.c:94
int ff_thread_video_encode_frame(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *frame, int *got_packet_ptr)
int64_t av_frame_get_pkt_duration(const AVFrame *frame)
static int shift(int a, int b)
Definition: sonic.c:82
AVPacketSideDataType
Definition: avcodec.h:1362
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:3439
int64_t pts_correction_num_faulty_dts
Number of incorrect PTS values so far.
Definition: avcodec.h:3420
int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
Set various frame properties from the codec context / packet data.
Definition: utils.c:870
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:184
int(* send_packet)(AVCodecContext *avctx, const AVPacket *avpkt)
Definition: avcodec.h:3698
AVCodec * avcodec_find_encoder(enum AVCodecID id)
Find a registered encoder with a matching codec ID.
Definition: utils.c:3108
int(* init)(AVCodecContext *avctx)
Initialize the hwaccel private data.
Definition: avcodec.h:3838
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:937
int coded_width
Bitstream width / height, may be different from width/height e.g.
Definition: avcodec.h:1878
int capabilities
Hardware accelerated codec capabilities.
Definition: avcodec.h:3754
const char * fmt
Definition: avisynth_c.h:769
void(* flush)(AVCodecContext *)
Flush buffers.
Definition: avcodec.h:3705
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:3830
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:6150
#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:1741
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:1621
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:367
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:4057
int rc_initial_buffer_occupancy
Number of bits which should be loaded into the rc buffer before decoding starts.
Definition: avcodec.h:2715
static int do_decode(AVCodecContext *avctx, AVPacket *pkt)
Definition: utils.c:2767
int attribute_align_arg avcodec_receive_packet(AVCodecContext *avctx, AVPacket *avpkt)
Read encoded data from the encoder.
Definition: utils.c:2991
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:1431
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:3424
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition: avcodec.h:2413
int nb_extended_buf
Number of elements in extended_buf.
Definition: frame.h:385
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: avcodec.h:3981
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:180
int ff_unlock_avcodec(const AVCodec *codec)
Definition: utils.c:3888
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:3438
int size
Definition: avcodec.h:1602
const char * b
Definition: vf_curves.c:113
const char * avcodec_license(void)
Return the libavcodec license.
Definition: utils.c:3429
enum AVPixelFormat pix_fmt
Supported pixel format.
Definition: avcodec.h:3748
static int get_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
Definition: utils.c:899
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:2087
static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
Pad last frame with silence.
Definition: utils.c:1771
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:1808
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:724
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1904
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:2316
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:3961
int avpriv_codec_get_cap_skip_frame_fill_param(const AVCodec *codec)
Definition: utils.c:1196
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:1014
void av_frame_move_ref(AVFrame *dst, AVFrame *src)
Move everything contained in src to dst and reset src.
Definition: frame.c:519
mpegvideo header.
enum AVMediaType type
Definition: avcodec.h:3614
static int convert_sub_to_old_ass_form(AVSubtitle *sub, const AVPacket *pkt, AVRational tb)
Definition: utils.c:2585
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:3166
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:3684
static AVPacket pkt
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:3078
enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
Wrapper around get_format() for frame-multithreaded codecs.
Definition: utils.c:3953
int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
Converts AVChromaLocation to swscale x/y chroma position.
Definition: utils.c:447
#define AV_CODEC_CAP_AUTO_THREADS
Codec supports avctx->thread_count == 0 (auto).
Definition: avcodec.h:1034
int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub, int *got_sub_ptr, AVPacket *avpkt)
Decode a subtitle message.
Definition: utils.c:2643
int trailing_padding
Audio only.
Definition: avcodec.h:4117
#define src
Definition: vp8dsp.c:254
void av_frame_set_pkt_size(AVFrame *frame, int val)
int profile
profile
Definition: avcodec.h:3182
planar GBR 4:4:4 36bpp, big-endian
Definition: pixfmt.h:268
AVCodec.
Definition: avcodec.h:3601
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:2475
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:3973
AVLockOp
Lock operation used by lockmgr.
Definition: avcodec.h:6147
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:3945
enum AVColorSpace color_space
Definition: avcodec.h:4070
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:3786
static void * codec_mutex
Definition: utils.c:117
int frame_size
Audio only.
Definition: avcodec.h:4102
Mastering display metadata (based on SMPTE-2086:2014).
Definition: avcodec.h:1539
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avcodec.h:1813
int av_get_channel_layout_nb_channels(uint64_t channel_layout)
Return the number of channels in the channel layout.
AVFrameSideData * av_frame_get_side_data(const AVFrame *frame, enum AVFrameSideDataType type)
Definition: frame.c:663
AVSubtitleRect ** rects
Definition: avcodec.h:3962
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:2503
void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
Definition: utils.c:3996
int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels, enum AVSampleFormat sample_fmt, const uint8_t *buf, int buf_size, int align)
Fill AVFrame audio data and linesize pointers.
Definition: utils.c:470
int av_codec_is_encoder(const AVCodec *codec)
Definition: utils.c:168
uint64_t vbv_delay
The delay between the time the packet this structure is associated with is received and the time when...
Definition: avcodec.h:1341
planar YUV 4:2:0 22.5bpp, (1 Cr & Cb sample per 2x2 Y & A samples), little-endian ...
Definition: pixfmt.h:191
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
Modify width and height values so that they will result in a memory buffer that is acceptable for the...
Definition: utils.c:432
#define FF_LEVEL_UNKNOWN
Definition: avcodec.h:3281
struct AVHWAccel * hwaccel
Hardware accelerator in use.
Definition: avcodec.h:2997
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:984
#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:202
static double cb(void *priv, double x, double y)
Definition: vf_geq.c:97
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
Definition: internal.h:40
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:102
HMTX pthread_mutex_t
Definition: os2threads.h:49
int height
Definition: internal.h:96
void av_packet_free(AVPacket **pkt)
Free the packet, if the packet is reference counted, it will be unreferenced first.
Definition: avpacket.c:62
enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
Definition: utils.c:1047
enum AVSampleFormat sample_fmt
audio sample format
Definition: avcodec.h:2446
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117