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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->pkt_pts = pkt->pts;
772  av_frame_set_pkt_pos (frame, pkt->pos);
773  av_frame_set_pkt_duration(frame, pkt->duration);
774  av_frame_set_pkt_size (frame, pkt->size);
775 
776  for (i = 0; i < FF_ARRAY_ELEMS(sd); i++) {
777  int size;
778  uint8_t *packet_sd = av_packet_get_side_data(pkt, sd[i].packet, &size);
779  if (packet_sd) {
780  AVFrameSideData *frame_sd = av_frame_new_side_data(frame,
781  sd[i].frame,
782  size);
783  if (!frame_sd)
784  return AVERROR(ENOMEM);
785 
786  memcpy(frame_sd->data, packet_sd, size);
787  }
788  }
789  add_metadata_from_side_data(pkt, frame);
790 
791  if (pkt->flags & AV_PKT_FLAG_DISCARD) {
792  frame->flags |= AV_FRAME_FLAG_DISCARD;
793  } else {
794  frame->flags = (frame->flags & ~AV_FRAME_FLAG_DISCARD);
795  }
796  } else {
797  frame->pkt_pts = AV_NOPTS_VALUE;
798  av_frame_set_pkt_pos (frame, -1);
799  av_frame_set_pkt_duration(frame, 0);
800  av_frame_set_pkt_size (frame, -1);
801  }
802  frame->reordered_opaque = avctx->reordered_opaque;
803 
805  frame->color_primaries = avctx->color_primaries;
806  if (frame->color_trc == AVCOL_TRC_UNSPECIFIED)
807  frame->color_trc = avctx->color_trc;
809  av_frame_set_colorspace(frame, avctx->colorspace);
811  av_frame_set_color_range(frame, avctx->color_range);
813  frame->chroma_location = avctx->chroma_sample_location;
814 
815  switch (avctx->codec->type) {
816  case AVMEDIA_TYPE_VIDEO:
817  frame->format = avctx->pix_fmt;
818  if (!frame->sample_aspect_ratio.num)
820 
821  if (frame->width && frame->height &&
822  av_image_check_sar(frame->width, frame->height,
823  frame->sample_aspect_ratio) < 0) {
824  av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
825  frame->sample_aspect_ratio.num,
826  frame->sample_aspect_ratio.den);
827  frame->sample_aspect_ratio = (AVRational){ 0, 1 };
828  }
829 
830  break;
831  case AVMEDIA_TYPE_AUDIO:
832  if (!frame->sample_rate)
833  frame->sample_rate = avctx->sample_rate;
834  if (frame->format < 0)
835  frame->format = avctx->sample_fmt;
836  if (!frame->channel_layout) {
837  if (avctx->channel_layout) {
839  avctx->channels) {
840  av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
841  "configuration.\n");
842  return AVERROR(EINVAL);
843  }
844 
845  frame->channel_layout = avctx->channel_layout;
846  } else {
847  if (avctx->channels > FF_SANE_NB_CHANNELS) {
848  av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
849  avctx->channels);
850  return AVERROR(ENOSYS);
851  }
852  }
853  }
854  av_frame_set_channels(frame, avctx->channels);
855  break;
856  }
857  return 0;
858 }
859 
861 {
862  return ff_init_buffer_info(avctx, frame);
863 }
864 
866 {
867  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
868  int i;
869  int num_planes = av_pix_fmt_count_planes(frame->format);
871  int flags = desc ? desc->flags : 0;
872  if (num_planes == 1 && (flags & AV_PIX_FMT_FLAG_PAL))
873  num_planes = 2;
874  for (i = 0; i < num_planes; i++) {
875  av_assert0(frame->data[i]);
876  }
877  // For now do not enforce anything for palette of pseudopal formats
878  if (num_planes == 1 && (flags & AV_PIX_FMT_FLAG_PSEUDOPAL))
879  num_planes = 2;
880  // For formats without data like hwaccel allow unused pointers to be non-NULL.
881  for (i = num_planes; num_planes > 0 && i < FF_ARRAY_ELEMS(frame->data); i++) {
882  if (frame->data[i])
883  av_log(avctx, AV_LOG_ERROR, "Buffer returned by get_buffer2() did not zero unused plane pointers\n");
884  frame->data[i] = NULL;
885  }
886  }
887 }
888 
890 {
891  const AVHWAccel *hwaccel = avctx->hwaccel;
892  int override_dimensions = 1;
893  int ret;
894 
895  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
896  if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0 || avctx->pix_fmt<0) {
897  av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
898  return AVERROR(EINVAL);
899  }
900 
901  if (frame->width <= 0 || frame->height <= 0) {
902  frame->width = FFMAX(avctx->width, AV_CEIL_RSHIFT(avctx->coded_width, avctx->lowres));
903  frame->height = FFMAX(avctx->height, AV_CEIL_RSHIFT(avctx->coded_height, avctx->lowres));
904  override_dimensions = 0;
905  }
906 
907  if (frame->data[0] || frame->data[1] || frame->data[2] || frame->data[3]) {
908  av_log(avctx, AV_LOG_ERROR, "pic->data[*]!=NULL in get_buffer_internal\n");
909  return AVERROR(EINVAL);
910  }
911  }
912  ret = ff_decode_frame_props(avctx, frame);
913  if (ret < 0)
914  return ret;
915 
916  if (hwaccel) {
917  if (hwaccel->alloc_frame) {
918  ret = hwaccel->alloc_frame(avctx, frame);
919  goto end;
920  }
921  } else
922  avctx->sw_pix_fmt = avctx->pix_fmt;
923 
924  ret = avctx->get_buffer2(avctx, frame, flags);
925  if (ret >= 0)
926  validate_avframe_allocation(avctx, frame);
927 
928 end:
929  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions) {
930  frame->width = avctx->width;
931  frame->height = avctx->height;
932  }
933 
934  return ret;
935 }
936 
938 {
939  int ret = get_buffer_internal(avctx, frame, flags);
940  if (ret < 0) {
941  av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
942  frame->width = frame->height = 0;
943  }
944  return ret;
945 }
946 
948 {
949  AVFrame *tmp;
950  int ret;
951 
953 
954  if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
955  av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
956  frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt));
957  av_frame_unref(frame);
958  }
959 
960  ff_init_buffer_info(avctx, frame);
961 
962  if (!frame->data[0])
963  return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
964 
965  if (av_frame_is_writable(frame))
966  return ff_decode_frame_props(avctx, frame);
967 
968  tmp = av_frame_alloc();
969  if (!tmp)
970  return AVERROR(ENOMEM);
971 
972  av_frame_move_ref(tmp, frame);
973 
974  ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
975  if (ret < 0) {
976  av_frame_free(&tmp);
977  return ret;
978  }
979 
980  av_frame_copy(frame, tmp);
981  av_frame_free(&tmp);
982 
983  return 0;
984 }
985 
987 {
988  int ret = reget_buffer_internal(avctx, frame);
989  if (ret < 0)
990  av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
991  return ret;
992 }
993 
994 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
995 {
996  int i;
997 
998  for (i = 0; i < count; i++) {
999  int r = func(c, (char *)arg + i * size);
1000  if (ret)
1001  ret[i] = r;
1002  }
1003  return 0;
1004 }
1005 
1006 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
1007 {
1008  int i;
1009 
1010  for (i = 0; i < count; i++) {
1011  int r = func(c, arg, i, 0);
1012  if (ret)
1013  ret[i] = r;
1014  }
1015  return 0;
1016 }
1017 
1019  unsigned int fourcc)
1020 {
1021  while (tags->pix_fmt >= 0) {
1022  if (tags->fourcc == fourcc)
1023  return tags->pix_fmt;
1024  tags++;
1025  }
1026  return AV_PIX_FMT_NONE;
1027 }
1028 
1030 {
1031  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
1032  return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
1033 }
1034 
1036 {
1037  while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
1038  ++fmt;
1039  return fmt[0];
1040 }
1041 
1043  enum AVPixelFormat pix_fmt)
1044 {
1045  AVHWAccel *hwaccel = NULL;
1046 
1047  while ((hwaccel = av_hwaccel_next(hwaccel)))
1048  if (hwaccel->id == codec_id
1049  && hwaccel->pix_fmt == pix_fmt)
1050  return hwaccel;
1051  return NULL;
1052 }
1053 
1054 static int setup_hwaccel(AVCodecContext *avctx,
1055  const enum AVPixelFormat fmt,
1056  const char *name)
1057 {
1058  AVHWAccel *hwa = find_hwaccel(avctx->codec_id, fmt);
1059  int ret = 0;
1060 
1061  if (avctx->active_thread_type & FF_THREAD_FRAME) {
1062  av_log(avctx, AV_LOG_WARNING,
1063  "Hardware accelerated decoding with frame threading is known to be unstable and its use is discouraged.\n");
1064  }
1065 
1066  if (!hwa) {
1067  av_log(avctx, AV_LOG_ERROR,
1068  "Could not find an AVHWAccel for the pixel format: %s",
1069  name);
1070  return AVERROR(ENOENT);
1071  }
1072 
1075  av_log(avctx, AV_LOG_WARNING, "Ignoring experimental hwaccel: %s\n",
1076  hwa->name);
1077  return AVERROR_PATCHWELCOME;
1078  }
1079 
1080  if (hwa->priv_data_size) {
1082  if (!avctx->internal->hwaccel_priv_data)
1083  return AVERROR(ENOMEM);
1084  }
1085 
1086  if (hwa->init) {
1087  ret = hwa->init(avctx);
1088  if (ret < 0) {
1090  return ret;
1091  }
1092  }
1093 
1094  avctx->hwaccel = hwa;
1095 
1096  return 0;
1097 }
1098 
1100 {
1101  const AVPixFmtDescriptor *desc;
1102  enum AVPixelFormat *choices;
1103  enum AVPixelFormat ret;
1104  unsigned n = 0;
1105 
1106  while (fmt[n] != AV_PIX_FMT_NONE)
1107  ++n;
1108 
1109  av_assert0(n >= 1);
1110  avctx->sw_pix_fmt = fmt[n - 1];
1112 
1113  choices = av_malloc_array(n + 1, sizeof(*choices));
1114  if (!choices)
1115  return AV_PIX_FMT_NONE;
1116 
1117  memcpy(choices, fmt, (n + 1) * sizeof(*choices));
1118 
1119  for (;;) {
1120  if (avctx->hwaccel && avctx->hwaccel->uninit)
1121  avctx->hwaccel->uninit(avctx);
1123  avctx->hwaccel = NULL;
1124 
1125  av_buffer_unref(&avctx->hw_frames_ctx);
1126 
1127  ret = avctx->get_format(avctx, choices);
1128 
1129  desc = av_pix_fmt_desc_get(ret);
1130  if (!desc) {
1131  ret = AV_PIX_FMT_NONE;
1132  break;
1133  }
1134 
1135  if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
1136  break;
1137 #if FF_API_CAP_VDPAU
1139  break;
1140 #endif
1141 
1142  if (avctx->hw_frames_ctx) {
1143  AVHWFramesContext *hw_frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
1144  if (hw_frames_ctx->format != ret) {
1145  av_log(avctx, AV_LOG_ERROR, "Format returned from get_buffer() "
1146  "does not match the format of provided AVHWFramesContext\n");
1147  ret = AV_PIX_FMT_NONE;
1148  break;
1149  }
1150  }
1151 
1152  if (!setup_hwaccel(avctx, ret, desc->name))
1153  break;
1154 
1155  /* Remove failed hwaccel from choices */
1156  for (n = 0; choices[n] != ret; n++)
1157  av_assert0(choices[n] != AV_PIX_FMT_NONE);
1158 
1159  do
1160  choices[n] = choices[n + 1];
1161  while (choices[n++] != AV_PIX_FMT_NONE);
1162  }
1163 
1164  av_freep(&choices);
1165  return ret;
1166 }
1167 
1168 MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
1169 MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor)
1170 MAKE_ACCESSORS(AVCodecContext, codec, int, lowres)
1171 MAKE_ACCESSORS(AVCodecContext, codec, int, seek_preroll)
1172 MAKE_ACCESSORS(AVCodecContext, codec, uint16_t*, chroma_intra_matrix)
1173 
1174 unsigned av_codec_get_codec_properties(const AVCodecContext *codec)
1175 {
1176  return codec->properties;
1177 }
1178 
1180 {
1181  return codec->max_lowres;
1182 }
1183 
1186 }
1187 
1189 {
1190  memset(sub, 0, sizeof(*sub));
1191  sub->pts = AV_NOPTS_VALUE;
1192 }
1193 
1195 {
1196  int64_t bit_rate;
1197  int bits_per_sample;
1198 
1199  switch (ctx->codec_type) {
1200  case AVMEDIA_TYPE_VIDEO:
1201  case AVMEDIA_TYPE_DATA:
1202  case AVMEDIA_TYPE_SUBTITLE:
1204  bit_rate = ctx->bit_rate;
1205  break;
1206  case AVMEDIA_TYPE_AUDIO:
1207  bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1208  bit_rate = bits_per_sample ? ctx->sample_rate * (int64_t)ctx->channels * bits_per_sample : ctx->bit_rate;
1209  break;
1210  default:
1211  bit_rate = 0;
1212  break;
1213  }
1214  return bit_rate;
1215 }
1216 
1217 int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1218 {
1219  int ret = 0;
1220 
1221  ff_unlock_avcodec(codec);
1222 
1223  ret = avcodec_open2(avctx, codec, options);
1224 
1225  ff_lock_avcodec(avctx, codec);
1226  return ret;
1227 }
1228 
1229 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1230 {
1231  int ret = 0;
1232  AVDictionary *tmp = NULL;
1233  const AVPixFmtDescriptor *pixdesc;
1234 
1235  if (avcodec_is_open(avctx))
1236  return 0;
1237 
1238  if ((!codec && !avctx->codec)) {
1239  av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
1240  return AVERROR(EINVAL);
1241  }
1242  if ((codec && avctx->codec && codec != avctx->codec)) {
1243  av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
1244  "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
1245  return AVERROR(EINVAL);
1246  }
1247  if (!codec)
1248  codec = avctx->codec;
1249 
1250  if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
1251  return AVERROR(EINVAL);
1252 
1253  if (options)
1254  av_dict_copy(&tmp, *options, 0);
1255 
1256  ret = ff_lock_avcodec(avctx, codec);
1257  if (ret < 0)
1258  return ret;
1259 
1260  avctx->internal = av_mallocz(sizeof(AVCodecInternal));
1261  if (!avctx->internal) {
1262  ret = AVERROR(ENOMEM);
1263  goto end;
1264  }
1265 
1266  avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
1267  if (!avctx->internal->pool) {
1268  ret = AVERROR(ENOMEM);
1269  goto free_and_end;
1270  }
1271 
1272  avctx->internal->to_free = av_frame_alloc();
1273  if (!avctx->internal->to_free) {
1274  ret = AVERROR(ENOMEM);
1275  goto free_and_end;
1276  }
1277 
1278  avctx->internal->buffer_frame = av_frame_alloc();
1279  if (!avctx->internal->buffer_frame) {
1280  ret = AVERROR(ENOMEM);
1281  goto free_and_end;
1282  }
1283 
1284  avctx->internal->buffer_pkt = av_packet_alloc();
1285  if (!avctx->internal->buffer_pkt) {
1286  ret = AVERROR(ENOMEM);
1287  goto free_and_end;
1288  }
1289 
1290  if (codec->priv_data_size > 0) {
1291  if (!avctx->priv_data) {
1292  avctx->priv_data = av_mallocz(codec->priv_data_size);
1293  if (!avctx->priv_data) {
1294  ret = AVERROR(ENOMEM);
1295  goto end;
1296  }
1297  if (codec->priv_class) {
1298  *(const AVClass **)avctx->priv_data = codec->priv_class;
1300  }
1301  }
1302  if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
1303  goto free_and_end;
1304  } else {
1305  avctx->priv_data = NULL;
1306  }
1307  if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
1308  goto free_and_end;
1309 
1310  if (avctx->codec_whitelist && av_match_list(codec->name, avctx->codec_whitelist, ',') <= 0) {
1311  av_log(avctx, AV_LOG_ERROR, "Codec (%s) not on whitelist \'%s\'\n", codec->name, avctx->codec_whitelist);
1312  ret = AVERROR(EINVAL);
1313  goto free_and_end;
1314  }
1315 
1316  // only call ff_set_dimensions() for non H.264/VP6F/DXV codecs so as not to overwrite previously setup dimensions
1317  if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
1318  (avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F || avctx->codec_id == AV_CODEC_ID_DXV))) {
1319  if (avctx->coded_width && avctx->coded_height)
1320  ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
1321  else if (avctx->width && avctx->height)
1322  ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
1323  if (ret < 0)
1324  goto free_and_end;
1325  }
1326 
1327  if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
1328  && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
1329  || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
1330  av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
1331  ff_set_dimensions(avctx, 0, 0);
1332  }
1333 
1334  if (avctx->width > 0 && avctx->height > 0) {
1335  if (av_image_check_sar(avctx->width, avctx->height,
1336  avctx->sample_aspect_ratio) < 0) {
1337  av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
1338  avctx->sample_aspect_ratio.num,
1339  avctx->sample_aspect_ratio.den);
1340  avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
1341  }
1342  }
1343 
1344  /* if the decoder init function was already called previously,
1345  * free the already allocated subtitle_header before overwriting it */
1346  if (av_codec_is_decoder(codec))
1347  av_freep(&avctx->subtitle_header);
1348 
1349  if (avctx->channels > FF_SANE_NB_CHANNELS) {
1350  ret = AVERROR(EINVAL);
1351  goto free_and_end;
1352  }
1353 
1354  avctx->codec = codec;
1355  if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
1356  avctx->codec_id == AV_CODEC_ID_NONE) {
1357  avctx->codec_type = codec->type;
1358  avctx->codec_id = codec->id;
1359  }
1360  if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
1361  && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
1362  av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
1363  ret = AVERROR(EINVAL);
1364  goto free_and_end;
1365  }
1366  avctx->frame_number = 0;
1368 
1369  if ((avctx->codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) &&
1371  const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
1372  AVCodec *codec2;
1373  av_log(avctx, AV_LOG_ERROR,
1374  "The %s '%s' is experimental but experimental codecs are not enabled, "
1375  "add '-strict %d' if you want to use it.\n",
1376  codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
1377  codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
1378  if (!(codec2->capabilities & AV_CODEC_CAP_EXPERIMENTAL))
1379  av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
1380  codec_string, codec2->name);
1381  ret = AVERROR_EXPERIMENTAL;
1382  goto free_and_end;
1383  }
1384 
1385  if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
1386  (!avctx->time_base.num || !avctx->time_base.den)) {
1387  avctx->time_base.num = 1;
1388  avctx->time_base.den = avctx->sample_rate;
1389  }
1390 
1391  if (!HAVE_THREADS)
1392  av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
1393 
1394  if (CONFIG_FRAME_THREAD_ENCODER && av_codec_is_encoder(avctx->codec)) {
1395  ff_unlock_avcodec(codec); //we will instantiate a few encoders thus kick the counter to prevent false detection of a problem
1396  ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
1397  ff_lock_avcodec(avctx, codec);
1398  if (ret < 0)
1399  goto free_and_end;
1400  }
1401 
1402  if (HAVE_THREADS
1404  ret = ff_thread_init(avctx);
1405  if (ret < 0) {
1406  goto free_and_end;
1407  }
1408  }
1409  if (!HAVE_THREADS && !(codec->capabilities & AV_CODEC_CAP_AUTO_THREADS))
1410  avctx->thread_count = 1;
1411 
1412  if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
1413  av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
1414  avctx->codec->max_lowres);
1415  avctx->lowres = avctx->codec->max_lowres;
1416  }
1417 
1418 #if FF_API_VISMV
1419  if (avctx->debug_mv)
1420  av_log(avctx, AV_LOG_WARNING, "The 'vismv' option is deprecated, "
1421  "see the codecview filter instead.\n");
1422 #endif
1423 
1424  if (av_codec_is_encoder(avctx->codec)) {
1425  int i;
1426 #if FF_API_CODED_FRAME
1428  avctx->coded_frame = av_frame_alloc();
1429  if (!avctx->coded_frame) {
1430  ret = AVERROR(ENOMEM);
1431  goto free_and_end;
1432  }
1434 #endif
1435 
1436  if (avctx->time_base.num <= 0 || avctx->time_base.den <= 0) {
1437  av_log(avctx, AV_LOG_ERROR, "The encoder timebase is not set.\n");
1438  ret = AVERROR(EINVAL);
1439  goto free_and_end;
1440  }
1441 
1442  if (avctx->codec->sample_fmts) {
1443  for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
1444  if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
1445  break;
1446  if (avctx->channels == 1 &&
1449  avctx->sample_fmt = avctx->codec->sample_fmts[i];
1450  break;
1451  }
1452  }
1453  if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
1454  char buf[128];
1455  snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt);
1456  av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n",
1457  (char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf));
1458  ret = AVERROR(EINVAL);
1459  goto free_and_end;
1460  }
1461  }
1462  if (avctx->codec->pix_fmts) {
1463  for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
1464  if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
1465  break;
1466  if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE
1467  && !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG)
1469  char buf[128];
1470  snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt);
1471  av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n",
1472  (char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf));
1473  ret = AVERROR(EINVAL);
1474  goto free_and_end;
1475  }
1476  if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ420P ||
1477  avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ411P ||
1478  avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ422P ||
1479  avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ440P ||
1480  avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ444P)
1481  avctx->color_range = AVCOL_RANGE_JPEG;
1482  }
1483  if (avctx->codec->supported_samplerates) {
1484  for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
1485  if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
1486  break;
1487  if (avctx->codec->supported_samplerates[i] == 0) {
1488  av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
1489  avctx->sample_rate);
1490  ret = AVERROR(EINVAL);
1491  goto free_and_end;
1492  }
1493  }
1494  if (avctx->sample_rate < 0) {
1495  av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
1496  avctx->sample_rate);
1497  ret = AVERROR(EINVAL);
1498  goto free_and_end;
1499  }
1500  if (avctx->codec->channel_layouts) {
1501  if (!avctx->channel_layout) {
1502  av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n");
1503  } else {
1504  for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
1505  if (avctx->channel_layout == avctx->codec->channel_layouts[i])
1506  break;
1507  if (avctx->codec->channel_layouts[i] == 0) {
1508  char buf[512];
1509  av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1510  av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf);
1511  ret = AVERROR(EINVAL);
1512  goto free_and_end;
1513  }
1514  }
1515  }
1516  if (avctx->channel_layout && avctx->channels) {
1517  int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1518  if (channels != avctx->channels) {
1519  char buf[512];
1520  av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1521  av_log(avctx, AV_LOG_ERROR,
1522  "Channel layout '%s' with %d channels does not match number of specified channels %d\n",
1523  buf, channels, avctx->channels);
1524  ret = AVERROR(EINVAL);
1525  goto free_and_end;
1526  }
1527  } else if (avctx->channel_layout) {
1529  }
1530  if (avctx->channels < 0) {
1531  av_log(avctx, AV_LOG_ERROR, "Specified number of channels %d is not supported\n",
1532  avctx->channels);
1533  ret = AVERROR(EINVAL);
1534  goto free_and_end;
1535  }
1536  if(avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1537  pixdesc = av_pix_fmt_desc_get(avctx->pix_fmt);
1538  if ( avctx->bits_per_raw_sample < 0
1539  || (avctx->bits_per_raw_sample > 8 && pixdesc->comp[0].depth <= 8)) {
1540  av_log(avctx, AV_LOG_WARNING, "Specified bit depth %d not possible with the specified pixel formats depth %d\n",
1541  avctx->bits_per_raw_sample, pixdesc->comp[0].depth);
1542  avctx->bits_per_raw_sample = pixdesc->comp[0].depth;
1543  }
1544  if (avctx->width <= 0 || avctx->height <= 0) {
1545  av_log(avctx, AV_LOG_ERROR, "dimensions not set\n");
1546  ret = AVERROR(EINVAL);
1547  goto free_and_end;
1548  }
1549  }
1550  if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
1551  && avctx->bit_rate>0 && avctx->bit_rate<1000) {
1552  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);
1553  }
1554 
1555  if (!avctx->rc_initial_buffer_occupancy)
1556  avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
1557 
1558  if (avctx->ticks_per_frame && avctx->time_base.num &&
1559  avctx->ticks_per_frame > INT_MAX / avctx->time_base.num) {
1560  av_log(avctx, AV_LOG_ERROR,
1561  "ticks_per_frame %d too large for the timebase %d/%d.",
1562  avctx->ticks_per_frame,
1563  avctx->time_base.num,
1564  avctx->time_base.den);
1565  goto free_and_end;
1566  }
1567 
1568  if (avctx->hw_frames_ctx) {
1569  AVHWFramesContext *frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
1570  if (frames_ctx->format != avctx->pix_fmt) {
1571  av_log(avctx, AV_LOG_ERROR,
1572  "Mismatching AVCodecContext.pix_fmt and AVHWFramesContext.format\n");
1573  ret = AVERROR(EINVAL);
1574  goto free_and_end;
1575  }
1576  }
1577  }
1578 
1580  avctx->pts_correction_num_faulty_dts = 0;
1581  avctx->pts_correction_last_pts =
1582  avctx->pts_correction_last_dts = INT64_MIN;
1583 
1584  if ( !CONFIG_GRAY && avctx->flags & AV_CODEC_FLAG_GRAY
1586  av_log(avctx, AV_LOG_WARNING,
1587  "gray decoding requested but not enabled at configuration time\n");
1588 
1589  if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
1590  || avctx->internal->frame_thread_encoder)) {
1591  ret = avctx->codec->init(avctx);
1592  if (ret < 0) {
1593  goto free_and_end;
1594  }
1595  }
1596 
1597  ret=0;
1598 
1599 #if FF_API_AUDIOENC_DELAY
1600  if (av_codec_is_encoder(avctx->codec))
1601  avctx->delay = avctx->initial_padding;
1602 #endif
1603 
1604  if (av_codec_is_decoder(avctx->codec)) {
1605  if (!avctx->bit_rate)
1606  avctx->bit_rate = get_bit_rate(avctx);
1607  /* validate channel layout from the decoder */
1608  if (avctx->channel_layout) {
1609  int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1610  if (!avctx->channels)
1611  avctx->channels = channels;
1612  else if (channels != avctx->channels) {
1613  char buf[512];
1614  av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1615  av_log(avctx, AV_LOG_WARNING,
1616  "Channel layout '%s' with %d channels does not match specified number of channels %d: "
1617  "ignoring specified channel layout\n",
1618  buf, channels, avctx->channels);
1619  avctx->channel_layout = 0;
1620  }
1621  }
1622  if (avctx->channels && avctx->channels < 0 ||
1623  avctx->channels > FF_SANE_NB_CHANNELS) {
1624  ret = AVERROR(EINVAL);
1625  goto free_and_end;
1626  }
1627  if (avctx->sub_charenc) {
1628  if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
1629  av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
1630  "supported with subtitles codecs\n");
1631  ret = AVERROR(EINVAL);
1632  goto free_and_end;
1633  } else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
1634  av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
1635  "subtitles character encoding will be ignored\n",
1636  avctx->codec_descriptor->name);
1638  } else {
1639  /* input character encoding is set for a text based subtitle
1640  * codec at this point */
1643 
1645 #if CONFIG_ICONV
1646  iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
1647  if (cd == (iconv_t)-1) {
1648  ret = AVERROR(errno);
1649  av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
1650  "with input character encoding \"%s\"\n", avctx->sub_charenc);
1651  goto free_and_end;
1652  }
1653  iconv_close(cd);
1654 #else
1655  av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
1656  "conversion needs a libavcodec built with iconv support "
1657  "for this codec\n");
1658  ret = AVERROR(ENOSYS);
1659  goto free_and_end;
1660 #endif
1661  }
1662  }
1663  }
1664 
1665 #if FF_API_AVCTX_TIMEBASE
1666  if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
1667  avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
1668 #endif
1669  }
1670  if (codec->priv_data_size > 0 && avctx->priv_data && codec->priv_class) {
1671  av_assert0(*(const AVClass **)avctx->priv_data == codec->priv_class);
1672  }
1673 
1674 end:
1675  ff_unlock_avcodec(codec);
1676  if (options) {
1678  *options = tmp;
1679  }
1680 
1681  return ret;
1682 free_and_end:
1683  if (avctx->codec &&
1684  (avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP))
1685  avctx->codec->close(avctx);
1686 
1687  if (codec->priv_class && codec->priv_data_size)
1688  av_opt_free(avctx->priv_data);
1689  av_opt_free(avctx);
1690 
1691 #if FF_API_CODED_FRAME
1693  av_frame_free(&avctx->coded_frame);
1695 #endif
1696 
1697  av_dict_free(&tmp);
1698  av_freep(&avctx->priv_data);
1699  if (avctx->internal) {
1700  av_packet_free(&avctx->internal->buffer_pkt);
1701  av_frame_free(&avctx->internal->buffer_frame);
1702  av_frame_free(&avctx->internal->to_free);
1703  av_freep(&avctx->internal->pool);
1704  }
1705  av_freep(&avctx->internal);
1706  avctx->codec = NULL;
1707  goto end;
1708 }
1709 
1710 int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
1711 {
1712  if (avpkt->size < 0) {
1713  av_log(avctx, AV_LOG_ERROR, "Invalid negative user packet size %d\n", avpkt->size);
1714  return AVERROR(EINVAL);
1715  }
1717  av_log(avctx, AV_LOG_ERROR, "Invalid minimum required packet size %"PRId64" (max allowed is %d)\n",
1718  size, INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE);
1719  return AVERROR(EINVAL);
1720  }
1721 
1722  if (avctx && 2*min_size < size) { // FIXME The factor needs to be finetuned
1723  av_assert0(!avpkt->data || avpkt->data != avctx->internal->byte_buffer);
1724  if (!avpkt->data || avpkt->size < size) {
1726  avpkt->data = avctx->internal->byte_buffer;
1727  avpkt->size = avctx->internal->byte_buffer_size;
1728  }
1729  }
1730 
1731  if (avpkt->data) {
1732  AVBufferRef *buf = avpkt->buf;
1733 
1734  if (avpkt->size < size) {
1735  av_log(avctx, AV_LOG_ERROR, "User packet is too small (%d < %"PRId64")\n", avpkt->size, size);
1736  return AVERROR(EINVAL);
1737  }
1738 
1739  av_init_packet(avpkt);
1740  avpkt->buf = buf;
1741  avpkt->size = size;
1742  return 0;
1743  } else {
1744  int ret = av_new_packet(avpkt, size);
1745  if (ret < 0)
1746  av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %"PRId64"\n", size);
1747  return ret;
1748  }
1749 }
1750 
1752 {
1753  return ff_alloc_packet2(NULL, avpkt, size, 0);
1754 }
1755 
1756 /**
1757  * Pad last frame with silence.
1758  */
1759 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1760 {
1761  AVFrame *frame = NULL;
1762  int ret;
1763 
1764  if (!(frame = av_frame_alloc()))
1765  return AVERROR(ENOMEM);
1766 
1767  frame->format = src->format;
1768  frame->channel_layout = src->channel_layout;
1770  frame->nb_samples = s->frame_size;
1771  ret = av_frame_get_buffer(frame, 32);
1772  if (ret < 0)
1773  goto fail;
1774 
1775  ret = av_frame_copy_props(frame, src);
1776  if (ret < 0)
1777  goto fail;
1778 
1779  if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1780  src->nb_samples, s->channels, s->sample_fmt)) < 0)
1781  goto fail;
1782  if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1783  frame->nb_samples - src->nb_samples,
1784  s->channels, s->sample_fmt)) < 0)
1785  goto fail;
1786 
1787  *dst = frame;
1788 
1789  return 0;
1790 
1791 fail:
1792  av_frame_free(&frame);
1793  return ret;
1794 }
1795 
1796 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1797  AVPacket *avpkt,
1798  const AVFrame *frame,
1799  int *got_packet_ptr)
1800 {
1801  AVFrame *extended_frame = NULL;
1802  AVFrame *padded_frame = NULL;
1803  int ret;
1804  AVPacket user_pkt = *avpkt;
1805  int needs_realloc = !user_pkt.data;
1806 
1807  *got_packet_ptr = 0;
1808 
1809  if (!avctx->codec->encode2) {
1810  av_log(avctx, AV_LOG_ERROR, "This encoder requires using the avcodec_send_frame() API.\n");
1811  return AVERROR(ENOSYS);
1812  }
1813 
1814  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY) && !frame) {
1815  av_packet_unref(avpkt);
1816  av_init_packet(avpkt);
1817  return 0;
1818  }
1819 
1820  /* ensure that extended_data is properly set */
1821  if (frame && !frame->extended_data) {
1822  if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1823  avctx->channels > AV_NUM_DATA_POINTERS) {
1824  av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1825  "with more than %d channels, but extended_data is not set.\n",
1827  return AVERROR(EINVAL);
1828  }
1829  av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1830 
1831  extended_frame = av_frame_alloc();
1832  if (!extended_frame)
1833  return AVERROR(ENOMEM);
1834 
1835  memcpy(extended_frame, frame, sizeof(AVFrame));
1836  extended_frame->extended_data = extended_frame->data;
1837  frame = extended_frame;
1838  }
1839 
1840  /* extract audio service type metadata */
1841  if (frame) {
1843  if (sd && sd->size >= sizeof(enum AVAudioServiceType))
1844  avctx->audio_service_type = *(enum AVAudioServiceType*)sd->data;
1845  }
1846 
1847  /* check for valid frame size */
1848  if (frame) {
1850  if (frame->nb_samples > avctx->frame_size) {
1851  av_log(avctx, AV_LOG_ERROR, "more samples than frame size (avcodec_encode_audio2)\n");
1852  ret = AVERROR(EINVAL);
1853  goto end;
1854  }
1855  } else if (!(avctx->codec->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1856  if (frame->nb_samples < avctx->frame_size &&
1857  !avctx->internal->last_audio_frame) {
1858  ret = pad_last_frame(avctx, &padded_frame, frame);
1859  if (ret < 0)
1860  goto end;
1861 
1862  frame = padded_frame;
1863  avctx->internal->last_audio_frame = 1;
1864  }
1865 
1866  if (frame->nb_samples != avctx->frame_size) {
1867  av_log(avctx, AV_LOG_ERROR, "nb_samples (%d) != frame_size (%d) (avcodec_encode_audio2)\n", frame->nb_samples, avctx->frame_size);
1868  ret = AVERROR(EINVAL);
1869  goto end;
1870  }
1871  }
1872  }
1873 
1874  av_assert0(avctx->codec->encode2);
1875 
1876  ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1877  if (!ret) {
1878  if (*got_packet_ptr) {
1879  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY)) {
1880  if (avpkt->pts == AV_NOPTS_VALUE)
1881  avpkt->pts = frame->pts;
1882  if (!avpkt->duration)
1883  avpkt->duration = ff_samples_to_time_base(avctx,
1884  frame->nb_samples);
1885  }
1886  avpkt->dts = avpkt->pts;
1887  } else {
1888  avpkt->size = 0;
1889  }
1890  }
1891  if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1892  needs_realloc = 0;
1893  if (user_pkt.data) {
1894  if (user_pkt.size >= avpkt->size) {
1895  memcpy(user_pkt.data, avpkt->data, avpkt->size);
1896  } else {
1897  av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1898  avpkt->size = user_pkt.size;
1899  ret = -1;
1900  }
1901  avpkt->buf = user_pkt.buf;
1902  avpkt->data = user_pkt.data;
1903  } else {
1904  if (av_dup_packet(avpkt) < 0) {
1905  ret = AVERROR(ENOMEM);
1906  }
1907  }
1908  }
1909 
1910  if (!ret) {
1911  if (needs_realloc && avpkt->data) {
1912  ret = av_buffer_realloc(&avpkt->buf, avpkt->size + AV_INPUT_BUFFER_PADDING_SIZE);
1913  if (ret >= 0)
1914  avpkt->data = avpkt->buf->data;
1915  }
1916 
1917  avctx->frame_number++;
1918  }
1919 
1920  if (ret < 0 || !*got_packet_ptr) {
1921  av_packet_unref(avpkt);
1922  av_init_packet(avpkt);
1923  goto end;
1924  }
1925 
1926  /* NOTE: if we add any audio encoders which output non-keyframe packets,
1927  * this needs to be moved to the encoders, but for now we can do it
1928  * here to simplify things */
1929  avpkt->flags |= AV_PKT_FLAG_KEY;
1930 
1931 end:
1932  av_frame_free(&padded_frame);
1933  av_free(extended_frame);
1934 
1935 #if FF_API_AUDIOENC_DELAY
1936  avctx->delay = avctx->initial_padding;
1937 #endif
1938 
1939  return ret;
1940 }
1941 
1942 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
1943  AVPacket *avpkt,
1944  const AVFrame *frame,
1945  int *got_packet_ptr)
1946 {
1947  int ret;
1948  AVPacket user_pkt = *avpkt;
1949  int needs_realloc = !user_pkt.data;
1950 
1951  *got_packet_ptr = 0;
1952 
1953  if (!avctx->codec->encode2) {
1954  av_log(avctx, AV_LOG_ERROR, "This encoder requires using the avcodec_send_frame() API.\n");
1955  return AVERROR(ENOSYS);
1956  }
1957 
1958  if(CONFIG_FRAME_THREAD_ENCODER &&
1960  return ff_thread_video_encode_frame(avctx, avpkt, frame, got_packet_ptr);
1961 
1962  if ((avctx->flags&AV_CODEC_FLAG_PASS1) && avctx->stats_out)
1963  avctx->stats_out[0] = '\0';
1964 
1965  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY) && !frame) {
1966  av_packet_unref(avpkt);
1967  av_init_packet(avpkt);
1968  avpkt->size = 0;
1969  return 0;
1970  }
1971 
1972  if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
1973  return AVERROR(EINVAL);
1974 
1975  if (frame && frame->format == AV_PIX_FMT_NONE)
1976  av_log(avctx, AV_LOG_WARNING, "AVFrame.format is not set\n");
1977  if (frame && (frame->width == 0 || frame->height == 0))
1978  av_log(avctx, AV_LOG_WARNING, "AVFrame.width or height is not set\n");
1979 
1980  av_assert0(avctx->codec->encode2);
1981 
1982  ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1983  av_assert0(ret <= 0);
1984 
1985  if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1986  needs_realloc = 0;
1987  if (user_pkt.data) {
1988  if (user_pkt.size >= avpkt->size) {
1989  memcpy(user_pkt.data, avpkt->data, avpkt->size);
1990  } else {
1991  av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1992  avpkt->size = user_pkt.size;
1993  ret = -1;
1994  }
1995  avpkt->buf = user_pkt.buf;
1996  avpkt->data = user_pkt.data;
1997  } else {
1998  if (av_dup_packet(avpkt) < 0) {
1999  ret = AVERROR(ENOMEM);
2000  }
2001  }
2002  }
2003 
2004  if (!ret) {
2005  if (!*got_packet_ptr)
2006  avpkt->size = 0;
2007  else if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
2008  avpkt->pts = avpkt->dts = frame->pts;
2009 
2010  if (needs_realloc && avpkt->data) {
2011  ret = av_buffer_realloc(&avpkt->buf, avpkt->size + AV_INPUT_BUFFER_PADDING_SIZE);
2012  if (ret >= 0)
2013  avpkt->data = avpkt->buf->data;
2014  }
2015 
2016  avctx->frame_number++;
2017  }
2018 
2019  if (ret < 0 || !*got_packet_ptr)
2020  av_packet_unref(avpkt);
2021 
2022  emms_c();
2023  return ret;
2024 }
2025 
2027  const AVSubtitle *sub)
2028 {
2029  int ret;
2030  if (sub->start_display_time) {
2031  av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
2032  return -1;
2033  }
2034 
2035  ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
2036  avctx->frame_number++;
2037  return ret;
2038 }
2039 
2040 /**
2041  * Attempt to guess proper monotonic timestamps for decoded video frames
2042  * which might have incorrect times. Input timestamps may wrap around, in
2043  * which case the output will as well.
2044  *
2045  * @param pts the pts field of the decoded AVPacket, as passed through
2046  * AVFrame.pkt_pts
2047  * @param dts the dts field of the decoded AVPacket
2048  * @return one of the input values, may be AV_NOPTS_VALUE
2049  */
2051  int64_t reordered_pts, int64_t dts)
2052 {
2053  int64_t pts = AV_NOPTS_VALUE;
2054 
2055  if (dts != AV_NOPTS_VALUE) {
2057  ctx->pts_correction_last_dts = dts;
2058  } else if (reordered_pts != AV_NOPTS_VALUE)
2059  ctx->pts_correction_last_dts = reordered_pts;
2060 
2061  if (reordered_pts != AV_NOPTS_VALUE) {
2062  ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
2063  ctx->pts_correction_last_pts = reordered_pts;
2064  } else if(dts != AV_NOPTS_VALUE)
2065  ctx->pts_correction_last_pts = dts;
2066 
2068  && reordered_pts != AV_NOPTS_VALUE)
2069  pts = reordered_pts;
2070  else
2071  pts = dts;
2072 
2073  return pts;
2074 }
2075 
2076 static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
2077 {
2078  int size = 0, ret;
2079  const uint8_t *data;
2080  uint32_t flags;
2081  int64_t val;
2082 
2083  data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
2084  if (!data)
2085  return 0;
2086 
2087  if (!(avctx->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE)) {
2088  av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
2089  "changes, but PARAM_CHANGE side data was sent to it.\n");
2090  ret = AVERROR(EINVAL);
2091  goto fail2;
2092  }
2093 
2094  if (size < 4)
2095  goto fail;
2096 
2097  flags = bytestream_get_le32(&data);
2098  size -= 4;
2099 
2101  if (size < 4)
2102  goto fail;
2103  val = bytestream_get_le32(&data);
2104  if (val <= 0 || val > INT_MAX) {
2105  av_log(avctx, AV_LOG_ERROR, "Invalid channel count");
2106  ret = AVERROR_INVALIDDATA;
2107  goto fail2;
2108  }
2109  avctx->channels = val;
2110  size -= 4;
2111  }
2113  if (size < 8)
2114  goto fail;
2115  avctx->channel_layout = bytestream_get_le64(&data);
2116  size -= 8;
2117  }
2119  if (size < 4)
2120  goto fail;
2121  val = bytestream_get_le32(&data);
2122  if (val <= 0 || val > INT_MAX) {
2123  av_log(avctx, AV_LOG_ERROR, "Invalid sample rate");
2124  ret = AVERROR_INVALIDDATA;
2125  goto fail2;
2126  }
2127  avctx->sample_rate = val;
2128  size -= 4;
2129  }
2131  if (size < 8)
2132  goto fail;
2133  avctx->width = bytestream_get_le32(&data);
2134  avctx->height = bytestream_get_le32(&data);
2135  size -= 8;
2136  ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
2137  if (ret < 0)
2138  goto fail2;
2139  }
2140 
2141  return 0;
2142 fail:
2143  av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
2144  ret = AVERROR_INVALIDDATA;
2145 fail2:
2146  if (ret < 0) {
2147  av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
2148  if (avctx->err_recognition & AV_EF_EXPLODE)
2149  return ret;
2150  }
2151  return 0;
2152 }
2153 
2155 {
2156  int ret;
2157 
2158  /* move the original frame to our backup */
2159  av_frame_unref(avci->to_free);
2160  av_frame_move_ref(avci->to_free, frame);
2161 
2162  /* now copy everything except the AVBufferRefs back
2163  * note that we make a COPY of the side data, so calling av_frame_free() on
2164  * the caller's frame will work properly */
2165  ret = av_frame_copy_props(frame, avci->to_free);
2166  if (ret < 0)
2167  return ret;
2168 
2169  memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
2170  memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
2171  if (avci->to_free->extended_data != avci->to_free->data) {
2172  int planes = av_frame_get_channels(avci->to_free);
2173  int size = planes * sizeof(*frame->extended_data);
2174 
2175  if (!size) {
2176  av_frame_unref(frame);
2177  return AVERROR_BUG;
2178  }
2179 
2180  frame->extended_data = av_malloc(size);
2181  if (!frame->extended_data) {
2182  av_frame_unref(frame);
2183  return AVERROR(ENOMEM);
2184  }
2185  memcpy(frame->extended_data, avci->to_free->extended_data,
2186  size);
2187  } else
2188  frame->extended_data = frame->data;
2189 
2190  frame->format = avci->to_free->format;
2191  frame->width = avci->to_free->width;
2192  frame->height = avci->to_free->height;
2193  frame->channel_layout = avci->to_free->channel_layout;
2194  frame->nb_samples = avci->to_free->nb_samples;
2196 
2197  return 0;
2198 }
2199 
2200 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
2201  int *got_picture_ptr,
2202  const AVPacket *avpkt)
2203 {
2204  AVCodecInternal *avci = avctx->internal;
2205  int ret;
2206  // copy to ensure we do not change avpkt
2207  AVPacket tmp = *avpkt;
2208 
2209  if (!avctx->codec)
2210  return AVERROR(EINVAL);
2211  if (avctx->codec->type != AVMEDIA_TYPE_VIDEO) {
2212  av_log(avctx, AV_LOG_ERROR, "Invalid media type for video\n");
2213  return AVERROR(EINVAL);
2214  }
2215 
2216  if (!avctx->codec->decode) {
2217  av_log(avctx, AV_LOG_ERROR, "This decoder requires using the avcodec_send_packet() API.\n");
2218  return AVERROR(ENOSYS);
2219  }
2220 
2221  *got_picture_ptr = 0;
2222  if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
2223  return AVERROR(EINVAL);
2224 
2225  avctx->internal->pkt = avpkt;
2226  ret = apply_param_change(avctx, avpkt);
2227  if (ret < 0)
2228  return ret;
2229 
2230  av_frame_unref(picture);
2231 
2232  if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size ||
2233  (avctx->active_thread_type & FF_THREAD_FRAME)) {
2234  int did_split = av_packet_split_side_data(&tmp);
2235  ret = apply_param_change(avctx, &tmp);
2236  if (ret < 0)
2237  goto fail;
2238 
2239  avctx->internal->pkt = &tmp;
2240  if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2241  ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
2242  &tmp);
2243  else {
2244  ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
2245  &tmp);
2247  picture->pkt_dts = avpkt->dts;
2248 
2249  if(!avctx->has_b_frames){
2250  av_frame_set_pkt_pos(picture, avpkt->pos);
2251  }
2252  //FIXME these should be under if(!avctx->has_b_frames)
2253  /* get_buffer is supposed to set frame parameters */
2254  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DR1)) {
2255  if (!picture->sample_aspect_ratio.num) picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
2256  if (!picture->width) picture->width = avctx->width;
2257  if (!picture->height) picture->height = avctx->height;
2258  if (picture->format == AV_PIX_FMT_NONE) picture->format = avctx->pix_fmt;
2259  }
2260  }
2261 
2262 fail:
2263  emms_c(); //needed to avoid an emms_c() call before every return;
2264 
2265  avctx->internal->pkt = NULL;
2266  if (did_split) {
2268  if(ret == tmp.size)
2269  ret = avpkt->size;
2270  }
2271  if (picture->flags & AV_FRAME_FLAG_DISCARD) {
2272  *got_picture_ptr = 0;
2273  }
2274  if (*got_picture_ptr) {
2275  if (!avctx->refcounted_frames) {
2276  int err = unrefcount_frame(avci, picture);
2277  if (err < 0)
2278  return err;
2279  }
2280 
2281  avctx->frame_number++;
2283  guess_correct_pts(avctx,
2284  picture->pkt_pts,
2285  picture->pkt_dts));
2286  } else
2287  av_frame_unref(picture);
2288  } else
2289  ret = 0;
2290 
2291  /* many decoders assign whole AVFrames, thus overwriting extended_data;
2292  * make sure it's set correctly */
2293  av_assert0(!picture->extended_data || picture->extended_data == picture->data);
2294 
2295 #if FF_API_AVCTX_TIMEBASE
2296  if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
2297  avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
2298 #endif
2299 
2300  return ret;
2301 }
2302 
2303 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
2304  AVFrame *frame,
2305  int *got_frame_ptr,
2306  const AVPacket *avpkt)
2307 {
2308  AVCodecInternal *avci = avctx->internal;
2309  int ret = 0;
2310 
2311  *got_frame_ptr = 0;
2312 
2313  if (!avctx->codec)
2314  return AVERROR(EINVAL);
2315 
2316  if (!avctx->codec->decode) {
2317  av_log(avctx, AV_LOG_ERROR, "This decoder requires using the avcodec_send_packet() API.\n");
2318  return AVERROR(ENOSYS);
2319  }
2320 
2321  if (!avpkt->data && avpkt->size) {
2322  av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2323  return AVERROR(EINVAL);
2324  }
2325  if (avctx->codec->type != AVMEDIA_TYPE_AUDIO) {
2326  av_log(avctx, AV_LOG_ERROR, "Invalid media type for audio\n");
2327  return AVERROR(EINVAL);
2328  }
2329 
2330  av_frame_unref(frame);
2331 
2332  if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
2333  uint8_t *side;
2334  int side_size;
2335  uint32_t discard_padding = 0;
2336  uint8_t skip_reason = 0;
2337  uint8_t discard_reason = 0;
2338  // copy to ensure we do not change avpkt
2339  AVPacket tmp = *avpkt;
2340  int did_split = av_packet_split_side_data(&tmp);
2341  ret = apply_param_change(avctx, &tmp);
2342  if (ret < 0)
2343  goto fail;
2344 
2345  avctx->internal->pkt = &tmp;
2346  if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2347  ret = ff_thread_decode_frame(avctx, frame, got_frame_ptr, &tmp);
2348  else {
2349  ret = avctx->codec->decode(avctx, frame, got_frame_ptr, &tmp);
2350  av_assert0(ret <= tmp.size);
2351  frame->pkt_dts = avpkt->dts;
2352  }
2353  if (ret >= 0 && *got_frame_ptr) {
2354  avctx->frame_number++;
2356  guess_correct_pts(avctx,
2357  frame->pkt_pts,
2358  frame->pkt_dts));
2359  if (frame->format == AV_SAMPLE_FMT_NONE)
2360  frame->format = avctx->sample_fmt;
2361  if (!frame->channel_layout)
2362  frame->channel_layout = avctx->channel_layout;
2363  if (!av_frame_get_channels(frame))
2364  av_frame_set_channels(frame, avctx->channels);
2365  if (!frame->sample_rate)
2366  frame->sample_rate = avctx->sample_rate;
2367  }
2368 
2369  side= av_packet_get_side_data(avctx->internal->pkt, AV_PKT_DATA_SKIP_SAMPLES, &side_size);
2370  if(side && side_size>=10) {
2371  avctx->internal->skip_samples = AV_RL32(side);
2372  discard_padding = AV_RL32(side + 4);
2373  av_log(avctx, AV_LOG_DEBUG, "skip %d / discard %d samples due to side data\n",
2374  avctx->internal->skip_samples, (int)discard_padding);
2375  skip_reason = AV_RL8(side + 8);
2376  discard_reason = AV_RL8(side + 9);
2377  }
2378 
2379  if ((frame->flags & AV_FRAME_FLAG_DISCARD) && *got_frame_ptr &&
2380  !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
2381  avctx->internal->skip_samples -= frame->nb_samples;
2382  *got_frame_ptr = 0;
2383  }
2384 
2385  if (avctx->internal->skip_samples > 0 && *got_frame_ptr &&
2386  !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
2387  if(frame->nb_samples <= avctx->internal->skip_samples){
2388  *got_frame_ptr = 0;
2389  avctx->internal->skip_samples -= frame->nb_samples;
2390  av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
2391  avctx->internal->skip_samples);
2392  } else {
2394  frame->nb_samples - avctx->internal->skip_samples, avctx->channels, frame->format);
2395  if(avctx->pkt_timebase.num && avctx->sample_rate) {
2396  int64_t diff_ts = av_rescale_q(avctx->internal->skip_samples,
2397  (AVRational){1, avctx->sample_rate},
2398  avctx->pkt_timebase);
2399  if(frame->pkt_pts!=AV_NOPTS_VALUE)
2400  frame->pkt_pts += diff_ts;
2401  if(frame->pkt_dts!=AV_NOPTS_VALUE)
2402  frame->pkt_dts += diff_ts;
2403  if (av_frame_get_pkt_duration(frame) >= diff_ts)
2404  av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2405  } else {
2406  av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
2407  }
2408  av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
2409  avctx->internal->skip_samples, frame->nb_samples);
2410  frame->nb_samples -= avctx->internal->skip_samples;
2411  avctx->internal->skip_samples = 0;
2412  }
2413  }
2414 
2415  if (discard_padding > 0 && discard_padding <= frame->nb_samples && *got_frame_ptr &&
2416  !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
2417  if (discard_padding == frame->nb_samples) {
2418  *got_frame_ptr = 0;
2419  } else {
2420  if(avctx->pkt_timebase.num && avctx->sample_rate) {
2421  int64_t diff_ts = av_rescale_q(frame->nb_samples - discard_padding,
2422  (AVRational){1, avctx->sample_rate},
2423  avctx->pkt_timebase);
2424  av_frame_set_pkt_duration(frame, diff_ts);
2425  } else {
2426  av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for discarded samples.\n");
2427  }
2428  av_log(avctx, AV_LOG_DEBUG, "discard %d/%d samples\n",
2429  (int)discard_padding, frame->nb_samples);
2430  frame->nb_samples -= discard_padding;
2431  }
2432  }
2433 
2434  if ((avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL) && *got_frame_ptr) {
2436  if (fside) {
2437  AV_WL32(fside->data, avctx->internal->skip_samples);
2438  AV_WL32(fside->data + 4, discard_padding);
2439  AV_WL8(fside->data + 8, skip_reason);
2440  AV_WL8(fside->data + 9, discard_reason);
2441  avctx->internal->skip_samples = 0;
2442  }
2443  }
2444 fail:
2445  avctx->internal->pkt = NULL;
2446  if (did_split) {
2448  if(ret == tmp.size)
2449  ret = avpkt->size;
2450  }
2451 
2452  if (ret >= 0 && *got_frame_ptr) {
2453  if (!avctx->refcounted_frames) {
2454  int err = unrefcount_frame(avci, frame);
2455  if (err < 0)
2456  return err;
2457  }
2458  } else
2460  }
2461 
2462  av_assert0(ret <= avpkt->size);
2463 
2464  return ret;
2465 }
2466 
2467 #define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
2469  AVPacket *outpkt, const AVPacket *inpkt)
2470 {
2471 #if CONFIG_ICONV
2472  iconv_t cd = (iconv_t)-1;
2473  int ret = 0;
2474  char *inb, *outb;
2475  size_t inl, outl;
2476  AVPacket tmp;
2477 #endif
2478 
2479  if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER || inpkt->size == 0)
2480  return 0;
2481 
2482 #if CONFIG_ICONV
2483  cd = iconv_open("UTF-8", avctx->sub_charenc);
2484  av_assert0(cd != (iconv_t)-1);
2485 
2486  inb = inpkt->data;
2487  inl = inpkt->size;
2488 
2489  if (inl >= INT_MAX / UTF8_MAX_BYTES - AV_INPUT_BUFFER_PADDING_SIZE) {
2490  av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n");
2491  ret = AVERROR(ENOMEM);
2492  goto end;
2493  }
2494 
2495  ret = av_new_packet(&tmp, inl * UTF8_MAX_BYTES);
2496  if (ret < 0)
2497  goto end;
2498  outpkt->buf = tmp.buf;
2499  outpkt->data = tmp.data;
2500  outpkt->size = tmp.size;
2501  outb = outpkt->data;
2502  outl = outpkt->size;
2503 
2504  if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
2505  iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
2506  outl >= outpkt->size || inl != 0) {
2507  ret = FFMIN(AVERROR(errno), -1);
2508  av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
2509  "from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
2510  av_packet_unref(&tmp);
2511  goto end;
2512  }
2513  outpkt->size -= outl;
2514  memset(outpkt->data + outpkt->size, 0, outl);
2515 
2516 end:
2517  if (cd != (iconv_t)-1)
2518  iconv_close(cd);
2519  return ret;
2520 #else
2521  av_log(avctx, AV_LOG_ERROR, "requesting subtitles recoding without iconv");
2522  return AVERROR(EINVAL);
2523 #endif
2524 }
2525 
2526 static int utf8_check(const uint8_t *str)
2527 {
2528  const uint8_t *byte;
2529  uint32_t codepoint, min;
2530 
2531  while (*str) {
2532  byte = str;
2533  GET_UTF8(codepoint, *(byte++), return 0;);
2534  min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
2535  1 << (5 * (byte - str) - 4);
2536  if (codepoint < min || codepoint >= 0x110000 ||
2537  codepoint == 0xFFFE /* BOM */ ||
2538  codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
2539  return 0;
2540  str = byte;
2541  }
2542  return 1;
2543 }
2544 
2545 #if FF_API_ASS_TIMING
2546 static void insert_ts(AVBPrint *buf, int ts)
2547 {
2548  if (ts == -1) {
2549  av_bprintf(buf, "9:59:59.99,");
2550  } else {
2551  int h, m, s;
2552 
2553  h = ts/360000; ts -= 360000*h;
2554  m = ts/ 6000; ts -= 6000*m;
2555  s = ts/ 100; ts -= 100*s;
2556  av_bprintf(buf, "%d:%02d:%02d.%02d,", h, m, s, ts);
2557  }
2558 }
2559 
2561 {
2562  int i;
2563  AVBPrint buf;
2564 
2566 
2567  for (i = 0; i < sub->num_rects; i++) {
2568  char *final_dialog;
2569  const char *dialog;
2570  AVSubtitleRect *rect = sub->rects[i];
2571  int ts_start, ts_duration = -1;
2572  long int layer;
2573 
2574  if (rect->type != SUBTITLE_ASS || !strncmp(rect->ass, "Dialogue: ", 10))
2575  continue;
2576 
2577  av_bprint_clear(&buf);
2578 
2579  /* skip ReadOrder */
2580  dialog = strchr(rect->ass, ',');
2581  if (!dialog)
2582  continue;
2583  dialog++;
2584 
2585  /* extract Layer or Marked */
2586  layer = strtol(dialog, (char**)&dialog, 10);
2587  if (*dialog != ',')
2588  continue;
2589  dialog++;
2590 
2591  /* rescale timing to ASS time base (ms) */
2592  ts_start = av_rescale_q(pkt->pts, tb, av_make_q(1, 100));
2593  if (pkt->duration != -1)
2594  ts_duration = av_rescale_q(pkt->duration, tb, av_make_q(1, 100));
2595  sub->end_display_time = FFMAX(sub->end_display_time, 10 * ts_duration);
2596 
2597  /* construct ASS (standalone file form with timestamps) string */
2598  av_bprintf(&buf, "Dialogue: %ld,", layer);
2599  insert_ts(&buf, ts_start);
2600  insert_ts(&buf, ts_duration == -1 ? -1 : ts_start + ts_duration);
2601  av_bprintf(&buf, "%s\r\n", dialog);
2602 
2603  final_dialog = av_strdup(buf.str);
2604  if (!av_bprint_is_complete(&buf) || !final_dialog) {
2605  av_freep(&final_dialog);
2606  av_bprint_finalize(&buf, NULL);
2607  return AVERROR(ENOMEM);
2608  }
2609  av_freep(&rect->ass);
2610  rect->ass = final_dialog;
2611  }
2612 
2613  av_bprint_finalize(&buf, NULL);
2614  return 0;
2615 }
2616 #endif
2617 
2619  int *got_sub_ptr,
2620  AVPacket *avpkt)
2621 {
2622  int i, ret = 0;
2623 
2624  if (!avpkt->data && avpkt->size) {
2625  av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2626  return AVERROR(EINVAL);
2627  }
2628  if (!avctx->codec)
2629  return AVERROR(EINVAL);
2630  if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
2631  av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
2632  return AVERROR(EINVAL);
2633  }
2634 
2635  *got_sub_ptr = 0;
2636  get_subtitle_defaults(sub);
2637 
2638  if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size) {
2639  AVPacket pkt_recoded;
2640  AVPacket tmp = *avpkt;
2641  int did_split = av_packet_split_side_data(&tmp);
2642  //apply_param_change(avctx, &tmp);
2643 
2644  if (did_split) {
2645  /* FFMIN() prevents overflow in case the packet wasn't allocated with
2646  * proper padding.
2647  * If the side data is smaller than the buffer padding size, the
2648  * remaining bytes should have already been filled with zeros by the
2649  * original packet allocation anyway. */
2650  memset(tmp.data + tmp.size, 0,
2651  FFMIN(avpkt->size - tmp.size, AV_INPUT_BUFFER_PADDING_SIZE));
2652  }
2653 
2654  pkt_recoded = tmp;
2655  ret = recode_subtitle(avctx, &pkt_recoded, &tmp);
2656  if (ret < 0) {
2657  *got_sub_ptr = 0;
2658  } else {
2659  avctx->internal->pkt = &pkt_recoded;
2660 
2661  if (avctx->pkt_timebase.num && avpkt->pts != AV_NOPTS_VALUE)
2662  sub->pts = av_rescale_q(avpkt->pts,
2663  avctx->pkt_timebase, AV_TIME_BASE_Q);
2664  ret = avctx->codec->decode(avctx, sub, got_sub_ptr, &pkt_recoded);
2665  av_assert1((ret >= 0) >= !!*got_sub_ptr &&
2666  !!*got_sub_ptr >= !!sub->num_rects);
2667 
2668 #if FF_API_ASS_TIMING
2670  && *got_sub_ptr && sub->num_rects) {
2671  const AVRational tb = avctx->pkt_timebase.num ? avctx->pkt_timebase
2672  : avctx->time_base;
2673  int err = convert_sub_to_old_ass_form(sub, avpkt, tb);
2674  if (err < 0)
2675  ret = err;
2676  }
2677 #endif
2678 
2679  if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
2680  avctx->pkt_timebase.num) {
2681  AVRational ms = { 1, 1000 };
2682  sub->end_display_time = av_rescale_q(avpkt->duration,
2683  avctx->pkt_timebase, ms);
2684  }
2685 
2686  for (i = 0; i < sub->num_rects; i++) {
2687  if (sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
2688  av_log(avctx, AV_LOG_ERROR,
2689  "Invalid UTF-8 in decoded subtitles text; "
2690  "maybe missing -sub_charenc option\n");
2691  avsubtitle_free(sub);
2692  return AVERROR_INVALIDDATA;
2693  }
2694  }
2695 
2696  if (tmp.data != pkt_recoded.data) { // did we recode?
2697  /* prevent from destroying side data from original packet */
2698  pkt_recoded.side_data = NULL;
2699  pkt_recoded.side_data_elems = 0;
2700 
2701  av_packet_unref(&pkt_recoded);
2702  }
2704  sub->format = 0;
2705  else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB)
2706  sub->format = 1;
2707  avctx->internal->pkt = NULL;
2708  }
2709 
2710  if (did_split) {
2712  if(ret == tmp.size)
2713  ret = avpkt->size;
2714  }
2715 
2716  if (*got_sub_ptr)
2717  avctx->frame_number++;
2718  }
2719 
2720  return ret;
2721 }
2722 
2724 {
2725  int i;
2726 
2727  for (i = 0; i < sub->num_rects; i++) {
2728  av_freep(&sub->rects[i]->data[0]);
2729  av_freep(&sub->rects[i]->data[1]);
2730  av_freep(&sub->rects[i]->data[2]);
2731  av_freep(&sub->rects[i]->data[3]);
2732  av_freep(&sub->rects[i]->text);
2733  av_freep(&sub->rects[i]->ass);
2734  av_freep(&sub->rects[i]);
2735  }
2736 
2737  av_freep(&sub->rects);
2738 
2739  memset(sub, 0, sizeof(AVSubtitle));
2740 }
2741 
2742 static int do_decode(AVCodecContext *avctx, AVPacket *pkt)
2743 {
2744  int got_frame;
2745  int ret;
2746 
2747  av_assert0(!avctx->internal->buffer_frame->buf[0]);
2748 
2749  if (!pkt)
2750  pkt = avctx->internal->buffer_pkt;
2751 
2752  // This is the lesser evil. The field is for compatibility with legacy users
2753  // of the legacy API, and users using the new API should not be forced to
2754  // even know about this field.
2755  avctx->refcounted_frames = 1;
2756 
2757  // Some codecs (at least wma lossless) will crash when feeding drain packets
2758  // after EOF was signaled.
2759  if (avctx->internal->draining_done)
2760  return AVERROR_EOF;
2761 
2762  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
2763  ret = avcodec_decode_video2(avctx, avctx->internal->buffer_frame,
2764  &got_frame, pkt);
2765  if (ret >= 0)
2766  ret = pkt->size;
2767  } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2768  ret = avcodec_decode_audio4(avctx, avctx->internal->buffer_frame,
2769  &got_frame, pkt);
2770  } else {
2771  ret = AVERROR(EINVAL);
2772  }
2773 
2774  if (ret == AVERROR(EAGAIN))
2775  ret = pkt->size;
2776 
2777  if (ret < 0)
2778  return ret;
2779 
2780  if (avctx->internal->draining && !got_frame)
2781  avctx->internal->draining_done = 1;
2782 
2783  if (ret >= pkt->size) {
2785  } else {
2786  int consumed = ret;
2787 
2788  if (pkt != avctx->internal->buffer_pkt) {
2790  if ((ret = av_packet_ref(avctx->internal->buffer_pkt, pkt)) < 0)
2791  return ret;
2792  }
2793 
2794  avctx->internal->buffer_pkt->data += consumed;
2795  avctx->internal->buffer_pkt->size -= consumed;
2798  }
2799 
2800  if (got_frame)
2801  av_assert0(avctx->internal->buffer_frame->buf[0]);
2802 
2803  return 0;
2804 }
2805 
2806 int attribute_align_arg avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt)
2807 {
2808  int ret;
2809 
2810  if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
2811  return AVERROR(EINVAL);
2812 
2813  if (avctx->internal->draining)
2814  return AVERROR_EOF;
2815 
2816  if (!avpkt || !avpkt->size) {
2817  avctx->internal->draining = 1;
2818  avpkt = NULL;
2819 
2820  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
2821  return 0;
2822  }
2823 
2824  if (avctx->codec->send_packet) {
2825  if (avpkt) {
2826  AVPacket tmp = *avpkt;
2827  int did_split = av_packet_split_side_data(&tmp);
2828  ret = apply_param_change(avctx, &tmp);
2829  if (ret >= 0)
2830  ret = avctx->codec->send_packet(avctx, &tmp);
2831  if (did_split)
2833  return ret;
2834  } else {
2835  return avctx->codec->send_packet(avctx, NULL);
2836  }
2837  }
2838 
2839  // Emulation via old API. Assume avpkt is likely not refcounted, while
2840  // decoder output is always refcounted, and avoid copying.
2841 
2842  if (avctx->internal->buffer_pkt->size || avctx->internal->buffer_frame->buf[0])
2843  return AVERROR(EAGAIN);
2844 
2845  // The goal is decoding the first frame of the packet without using memcpy,
2846  // because the common case is having only 1 frame per packet (especially
2847  // with video, but audio too). In other cases, it can't be avoided, unless
2848  // the user is feeding refcounted packets.
2849  return do_decode(avctx, (AVPacket *)avpkt);
2850 }
2851 
2852 int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
2853 {
2854  int ret;
2855 
2856  av_frame_unref(frame);
2857 
2858  if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
2859  return AVERROR(EINVAL);
2860 
2861  if (avctx->codec->receive_frame) {
2862  if (avctx->internal->draining && !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
2863  return AVERROR_EOF;
2864  return avctx->codec->receive_frame(avctx, frame);
2865  }
2866 
2867  // Emulation via old API.
2868 
2869  if (!avctx->internal->buffer_frame->buf[0]) {
2870  if (!avctx->internal->buffer_pkt->size && !avctx->internal->draining)
2871  return AVERROR(EAGAIN);
2872 
2873  while (1) {
2874  if ((ret = do_decode(avctx, avctx->internal->buffer_pkt)) < 0) {
2876  return ret;
2877  }
2878  // Some audio decoders may consume partial data without returning
2879  // a frame (fate-wmapro-2ch). There is no way to make the caller
2880  // call avcodec_receive_frame() again without returning a frame,
2881  // so try to decode more in these cases.
2882  if (avctx->internal->buffer_frame->buf[0] ||
2883  !avctx->internal->buffer_pkt->size)
2884  break;
2885  }
2886  }
2887 
2888  if (!avctx->internal->buffer_frame->buf[0])
2889  return avctx->internal->draining ? AVERROR_EOF : AVERROR(EAGAIN);
2890 
2891  av_frame_move_ref(frame, avctx->internal->buffer_frame);
2892  return 0;
2893 }
2894 
2895 static int do_encode(AVCodecContext *avctx, const AVFrame *frame, int *got_packet)
2896 {
2897  int ret;
2898  *got_packet = 0;
2899 
2901  avctx->internal->buffer_pkt_valid = 0;
2902 
2903  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
2904  ret = avcodec_encode_video2(avctx, avctx->internal->buffer_pkt,
2905  frame, got_packet);
2906  } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
2907  ret = avcodec_encode_audio2(avctx, avctx->internal->buffer_pkt,
2908  frame, got_packet);
2909  } else {
2910  ret = AVERROR(EINVAL);
2911  }
2912 
2913  if (ret >= 0 && *got_packet) {
2914  // Encoders must always return ref-counted buffers.
2915  // Side-data only packets have no data and can be not ref-counted.
2916  av_assert0(!avctx->internal->buffer_pkt->data || avctx->internal->buffer_pkt->buf);
2917  avctx->internal->buffer_pkt_valid = 1;
2918  ret = 0;
2919  } else {
2921  }
2922 
2923  return ret;
2924 }
2925 
2926 int attribute_align_arg avcodec_send_frame(AVCodecContext *avctx, const AVFrame *frame)
2927 {
2928  if (!avcodec_is_open(avctx) || !av_codec_is_encoder(avctx->codec))
2929  return AVERROR(EINVAL);
2930 
2931  if (avctx->internal->draining)
2932  return AVERROR_EOF;
2933 
2934  if (!frame) {
2935  avctx->internal->draining = 1;
2936 
2937  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
2938  return 0;
2939  }
2940 
2941  if (avctx->codec->send_frame)
2942  return avctx->codec->send_frame(avctx, frame);
2943 
2944  // Emulation via old API. Do it here instead of avcodec_receive_packet, because:
2945  // 1. if the AVFrame is not refcounted, the copying will be much more
2946  // expensive than copying the packet data
2947  // 2. assume few users use non-refcounted AVPackets, so usually no copy is
2948  // needed
2949 
2950  if (avctx->internal->buffer_pkt_valid)
2951  return AVERROR(EAGAIN);
2952 
2953  return do_encode(avctx, frame, &(int){0});
2954 }
2955 
2956 int attribute_align_arg avcodec_receive_packet(AVCodecContext *avctx, AVPacket *avpkt)
2957 {
2958  av_packet_unref(avpkt);
2959 
2960  if (!avcodec_is_open(avctx) || !av_codec_is_encoder(avctx->codec))
2961  return AVERROR(EINVAL);
2962 
2963  if (avctx->codec->receive_packet) {
2964  if (avctx->internal->draining && !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
2965  return AVERROR_EOF;
2966  return avctx->codec->receive_packet(avctx, avpkt);
2967  }
2968 
2969  // Emulation via old API.
2970 
2971  if (!avctx->internal->buffer_pkt_valid) {
2972  int got_packet;
2973  int ret;
2974  if (!avctx->internal->draining)
2975  return AVERROR(EAGAIN);
2976  ret = do_encode(avctx, NULL, &got_packet);
2977  if (ret < 0)
2978  return ret;
2979  if (ret >= 0 && !got_packet)
2980  return AVERROR_EOF;
2981  }
2982 
2983  av_packet_move_ref(avpkt, avctx->internal->buffer_pkt);
2984  avctx->internal->buffer_pkt_valid = 0;
2985  return 0;
2986 }
2987 
2989 {
2990  int i;
2991 
2992  if (!avctx)
2993  return 0;
2994 
2995  if (avcodec_is_open(avctx)) {
2996  FramePool *pool = avctx->internal->pool;
2997  if (CONFIG_FRAME_THREAD_ENCODER &&
2998  avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
3000  }
3001  if (HAVE_THREADS && avctx->internal->thread_ctx)
3002  ff_thread_free(avctx);
3003  if (avctx->codec && avctx->codec->close)
3004  avctx->codec->close(avctx);
3005  avctx->internal->byte_buffer_size = 0;
3006  av_freep(&avctx->internal->byte_buffer);
3007  av_frame_free(&avctx->internal->to_free);
3010  for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
3011  av_buffer_pool_uninit(&pool->pools[i]);
3012  av_freep(&avctx->internal->pool);
3013 
3014  if (avctx->hwaccel && avctx->hwaccel->uninit)
3015  avctx->hwaccel->uninit(avctx);
3017 
3018  av_freep(&avctx->internal);
3019  }
3020 
3021  for (i = 0; i < avctx->nb_coded_side_data; i++)
3022  av_freep(&avctx->coded_side_data[i].data);
3023  av_freep(&avctx->coded_side_data);
3024  avctx->nb_coded_side_data = 0;
3025 
3026  av_buffer_unref(&avctx->hw_frames_ctx);
3027 
3028  if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
3029  av_opt_free(avctx->priv_data);
3030  av_opt_free(avctx);
3031  av_freep(&avctx->priv_data);
3032  if (av_codec_is_encoder(avctx->codec)) {
3033  av_freep(&avctx->extradata);
3034 #if FF_API_CODED_FRAME
3036  av_frame_free(&avctx->coded_frame);
3038 #endif
3039  }
3040  avctx->codec = NULL;
3041  avctx->active_thread_type = 0;
3042 
3043  return 0;
3044 }
3045 
3047 {
3048  switch(id){
3049  //This is for future deprecatec codec ids, its empty since
3050  //last major bump but will fill up again over time, please don't remove it
3051  default : return id;
3052  }
3053 }
3054 
3055 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
3056 {
3057  AVCodec *p, *experimental = NULL;
3058  p = first_avcodec;
3059  id= remap_deprecated_codec_id(id);
3060  while (p) {
3061  if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
3062  p->id == id) {
3063  if (p->capabilities & AV_CODEC_CAP_EXPERIMENTAL && !experimental) {
3064  experimental = p;
3065  } else
3066  return p;
3067  }
3068  p = p->next;
3069  }
3070  return experimental;
3071 }
3072 
3074 {
3075  return find_encdec(id, 1);
3076 }
3077 
3079 {
3080  AVCodec *p;
3081  if (!name)
3082  return NULL;
3083  p = first_avcodec;
3084  while (p) {
3085  if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
3086  return p;
3087  p = p->next;
3088  }
3089  return NULL;
3090 }
3091 
3093 {
3094  return find_encdec(id, 0);
3095 }
3096 
3098 {
3099  AVCodec *p;
3100  if (!name)
3101  return NULL;
3102  p = first_avcodec;
3103  while (p) {
3104  if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
3105  return p;
3106  p = p->next;
3107  }
3108  return NULL;
3109 }
3110 
3111 const char *avcodec_get_name(enum AVCodecID id)
3112 {
3113  const AVCodecDescriptor *cd;
3114  AVCodec *codec;
3115 
3116  if (id == AV_CODEC_ID_NONE)
3117  return "none";
3118  cd = avcodec_descriptor_get(id);
3119  if (cd)
3120  return cd->name;
3121  av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
3122  codec = avcodec_find_decoder(id);
3123  if (codec)
3124  return codec->name;
3125  codec = avcodec_find_encoder(id);
3126  if (codec)
3127  return codec->name;
3128  return "unknown_codec";
3129 }
3130 
3131 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
3132 {
3133  int i, len, ret = 0;
3134 
3135 #define TAG_PRINT(x) \
3136  (((x) >= '0' && (x) <= '9') || \
3137  ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
3138  ((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_'))
3139 
3140  for (i = 0; i < 4; i++) {
3141  len = snprintf(buf, buf_size,
3142  TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
3143  buf += len;
3144  buf_size = buf_size > len ? buf_size - len : 0;
3145  ret += len;
3146  codec_tag >>= 8;
3147  }
3148  return ret;
3149 }
3150 
3151 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
3152 {
3153  const char *codec_type;
3154  const char *codec_name;
3155  const char *profile = NULL;
3156  int64_t bitrate;
3157  int new_line = 0;
3158  AVRational display_aspect_ratio;
3159  const char *separator = enc->dump_separator ? (const char *)enc->dump_separator : ", ";
3160 
3161  if (!buf || buf_size <= 0)
3162  return;
3163  codec_type = av_get_media_type_string(enc->codec_type);
3164  codec_name = avcodec_get_name(enc->codec_id);
3165  profile = avcodec_profile_name(enc->codec_id, enc->profile);
3166 
3167  snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown",
3168  codec_name);
3169  buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
3170 
3171  if (enc->codec && strcmp(enc->codec->name, codec_name))
3172  snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name);
3173 
3174  if (profile)
3175  snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
3176  if ( enc->codec_type == AVMEDIA_TYPE_VIDEO
3178  && enc->refs)
3179  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3180  ", %d reference frame%s",
3181  enc->refs, enc->refs > 1 ? "s" : "");
3182 
3183  if (enc->codec_tag) {
3184  char tag_buf[32];
3185  av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
3186  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3187  " (%s / 0x%04X)", tag_buf, enc->codec_tag);
3188  }
3189 
3190  switch (enc->codec_type) {
3191  case AVMEDIA_TYPE_VIDEO:
3192  {
3193  char detail[256] = "(";
3194 
3195  av_strlcat(buf, separator, buf_size);
3196 
3197  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3198  "%s", enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
3200  if (enc->bits_per_raw_sample && enc->pix_fmt != AV_PIX_FMT_NONE &&
3202  av_strlcatf(detail, sizeof(detail), "%d bpc, ", enc->bits_per_raw_sample);
3204  av_strlcatf(detail, sizeof(detail), "%s, ",
3206 
3207  if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
3209  enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
3210  if (enc->colorspace != (int)enc->color_primaries ||
3211  enc->colorspace != (int)enc->color_trc) {
3212  new_line = 1;
3213  av_strlcatf(detail, sizeof(detail), "%s/%s/%s, ",
3217  } else
3218  av_strlcatf(detail, sizeof(detail), "%s, ",
3220  }
3221 
3222  if (av_log_get_level() >= AV_LOG_DEBUG &&
3224  av_strlcatf(detail, sizeof(detail), "%s, ",
3226 
3227  if (strlen(detail) > 1) {
3228  detail[strlen(detail) - 2] = 0;
3229  av_strlcatf(buf, buf_size, "%s)", detail);
3230  }
3231  }
3232 
3233  if (enc->width) {
3234  av_strlcat(buf, new_line ? separator : ", ", buf_size);
3235 
3236  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3237  "%dx%d",
3238  enc->width, enc->height);
3239 
3240  if (av_log_get_level() >= AV_LOG_VERBOSE &&
3241  (enc->width != enc->coded_width ||
3242  enc->height != enc->coded_height))
3243  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3244  " (%dx%d)", enc->coded_width, enc->coded_height);
3245 
3246  if (enc->sample_aspect_ratio.num) {
3247  av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3248  enc->width * (int64_t)enc->sample_aspect_ratio.num,
3249  enc->height * (int64_t)enc->sample_aspect_ratio.den,
3250  1024 * 1024);
3251  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3252  " [SAR %d:%d DAR %d:%d]",
3254  display_aspect_ratio.num, display_aspect_ratio.den);
3255  }
3256  if (av_log_get_level() >= AV_LOG_DEBUG) {
3257  int g = av_gcd(enc->time_base.num, enc->time_base.den);
3258  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3259  ", %d/%d",
3260  enc->time_base.num / g, enc->time_base.den / g);
3261  }
3262  }
3263  if (encode) {
3264  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3265  ", q=%d-%d", enc->qmin, enc->qmax);
3266  } else {
3268  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3269  ", Closed Captions");
3271  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3272  ", lossless");
3273  }
3274  break;
3275  case AVMEDIA_TYPE_AUDIO:
3276  av_strlcat(buf, separator, buf_size);
3277 
3278  if (enc->sample_rate) {
3279  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3280  "%d Hz, ", enc->sample_rate);
3281  }
3282  av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
3283  if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
3284  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3285  ", %s", av_get_sample_fmt_name(enc->sample_fmt));
3286  }
3287  if ( enc->bits_per_raw_sample > 0
3289  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3290  " (%d bit)", enc->bits_per_raw_sample);
3291  if (av_log_get_level() >= AV_LOG_VERBOSE) {
3292  if (enc->initial_padding)
3293  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3294  ", delay %d", enc->initial_padding);
3295  if (enc->trailing_padding)
3296  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3297  ", padding %d", enc->trailing_padding);
3298  }
3299  break;
3300  case AVMEDIA_TYPE_DATA:
3301  if (av_log_get_level() >= AV_LOG_DEBUG) {
3302  int g = av_gcd(enc->time_base.num, enc->time_base.den);
3303  if (g)
3304  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3305  ", %d/%d",
3306  enc->time_base.num / g, enc->time_base.den / g);
3307  }
3308  break;
3309  case AVMEDIA_TYPE_SUBTITLE:
3310  if (enc->width)
3311  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3312  ", %dx%d", enc->width, enc->height);
3313  break;
3314  default:
3315  return;
3316  }
3317  if (encode) {
3318  if (enc->flags & AV_CODEC_FLAG_PASS1)
3319  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3320  ", pass 1");
3321  if (enc->flags & AV_CODEC_FLAG_PASS2)
3322  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3323  ", pass 2");
3324  }
3325  bitrate = get_bit_rate(enc);
3326  if (bitrate != 0) {
3327  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3328  ", %"PRId64" kb/s", bitrate / 1000);
3329  } else if (enc->rc_max_rate > 0) {
3330  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3331  ", max. %"PRId64" kb/s", (int64_t)enc->rc_max_rate / 1000);
3332  }
3333 }
3334 
3335 const char *av_get_profile_name(const AVCodec *codec, int profile)
3336 {
3337  const AVProfile *p;
3338  if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
3339  return NULL;
3340 
3341  for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
3342  if (p->profile == profile)
3343  return p->name;
3344 
3345  return NULL;
3346 }
3347 
3349 {
3350  const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
3351  const AVProfile *p;
3352 
3353  if (profile == FF_PROFILE_UNKNOWN || !desc || !desc->profiles)
3354  return NULL;
3355 
3356  for (p = desc->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
3357  if (p->profile == profile)
3358  return p->name;
3359 
3360  return NULL;
3361 }
3362 
3363 unsigned avcodec_version(void)
3364 {
3365 // av_assert0(AV_CODEC_ID_V410==164);
3368 // av_assert0(AV_CODEC_ID_BMV_AUDIO==86071);
3369  av_assert0(AV_CODEC_ID_SRT==94216);
3371 
3372  return LIBAVCODEC_VERSION_INT;
3373 }
3374 
3375 const char *avcodec_configuration(void)
3376 {
3377  return FFMPEG_CONFIGURATION;
3378 }
3379 
3380 const char *avcodec_license(void)
3381 {
3382 #define LICENSE_PREFIX "libavcodec license: "
3383  return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
3384 }
3385 
3387 {
3388  avctx->internal->draining = 0;
3389  avctx->internal->draining_done = 0;
3392  avctx->internal->buffer_pkt_valid = 0;
3393 
3394  if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
3395  ff_thread_flush(avctx);
3396  else if (avctx->codec->flush)
3397  avctx->codec->flush(avctx);
3398 
3399  avctx->pts_correction_last_pts =
3400  avctx->pts_correction_last_dts = INT64_MIN;
3401 
3402  if (!avctx->refcounted_frames)
3403  av_frame_unref(avctx->internal->to_free);
3404 }
3405 
3407 {
3408  switch (codec_id) {
3409  case AV_CODEC_ID_8SVX_EXP:
3410  case AV_CODEC_ID_8SVX_FIB:
3411  case AV_CODEC_ID_ADPCM_CT:
3419  return 4;
3420  case AV_CODEC_ID_DSD_LSBF:
3421  case AV_CODEC_ID_DSD_MSBF:
3424  case AV_CODEC_ID_PCM_ALAW:
3425  case AV_CODEC_ID_PCM_MULAW:
3426  case AV_CODEC_ID_PCM_S8:
3428  case AV_CODEC_ID_PCM_U8:
3429  case AV_CODEC_ID_PCM_ZORK:
3430  case AV_CODEC_ID_SDX2_DPCM:
3431  return 8;
3432  case AV_CODEC_ID_PCM_S16BE:
3434  case AV_CODEC_ID_PCM_S16LE:
3436  case AV_CODEC_ID_PCM_U16BE:
3437  case AV_CODEC_ID_PCM_U16LE:
3438  return 16;
3440  case AV_CODEC_ID_PCM_S24BE:
3441  case AV_CODEC_ID_PCM_S24LE:
3443  case AV_CODEC_ID_PCM_U24BE:
3444  case AV_CODEC_ID_PCM_U24LE:
3445  return 24;
3446  case AV_CODEC_ID_PCM_S32BE:
3447  case AV_CODEC_ID_PCM_S32LE:
3449  case AV_CODEC_ID_PCM_U32BE:
3450  case AV_CODEC_ID_PCM_U32LE:
3451  case AV_CODEC_ID_PCM_F32BE:
3452  case AV_CODEC_ID_PCM_F32LE:
3453  return 32;
3454  case AV_CODEC_ID_PCM_F64BE:
3455  case AV_CODEC_ID_PCM_F64LE:
3456  case AV_CODEC_ID_PCM_S64BE:
3457  case AV_CODEC_ID_PCM_S64LE:
3458  return 64;
3459  default:
3460  return 0;
3461  }
3462 }
3463 
3465 {
3466  static const enum AVCodecID map[AV_SAMPLE_FMT_NB][2] = {
3478  };
3479  if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB)
3480  return AV_CODEC_ID_NONE;
3481  if (be < 0 || be > 1)
3482  be = AV_NE(1, 0);
3483  return map[fmt][be];
3484 }
3485 
3487 {
3488  switch (codec_id) {
3490  return 2;
3492  return 3;
3496  case AV_CODEC_ID_ADPCM_SWF:
3497  case AV_CODEC_ID_ADPCM_MS:
3498  return 4;
3499  default:
3500  return av_get_exact_bits_per_sample(codec_id);
3501  }
3502 }
3503 
3504 static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba,
3505  uint32_t tag, int bits_per_coded_sample, int64_t bitrate,
3506  uint8_t * extradata, int frame_size, int frame_bytes)
3507 {
3509  int framecount = (ba > 0 && frame_bytes / ba > 0) ? frame_bytes / ba : 1;
3510 
3511  /* codecs with an exact constant bits per sample */
3512  if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
3513  return (frame_bytes * 8LL) / (bps * ch);
3514  bps = bits_per_coded_sample;
3515 
3516  /* codecs with a fixed packet duration */
3517  switch (id) {
3518  case AV_CODEC_ID_ADPCM_ADX: return 32;
3519  case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
3520  case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
3521  case AV_CODEC_ID_AMR_NB:
3522  case AV_CODEC_ID_EVRC:
3523  case AV_CODEC_ID_GSM:
3524  case AV_CODEC_ID_QCELP:
3525  case AV_CODEC_ID_RA_288: return 160;
3526  case AV_CODEC_ID_AMR_WB:
3527  case AV_CODEC_ID_GSM_MS: return 320;
3528  case AV_CODEC_ID_MP1: return 384;
3529  case AV_CODEC_ID_ATRAC1: return 512;
3530  case AV_CODEC_ID_ATRAC3: return 1024 * framecount;
3531  case AV_CODEC_ID_ATRAC3P: return 2048;
3532  case AV_CODEC_ID_MP2:
3533  case AV_CODEC_ID_MUSEPACK7: return 1152;
3534  case AV_CODEC_ID_AC3: return 1536;
3535  }
3536 
3537  if (sr > 0) {
3538  /* calc from sample rate */
3539  if (id == AV_CODEC_ID_TTA)
3540  return 256 * sr / 245;
3541  else if (id == AV_CODEC_ID_DST)
3542  return 588 * sr / 44100;
3543 
3544  if (ch > 0) {
3545  /* calc from sample rate and channels */
3546  if (id == AV_CODEC_ID_BINKAUDIO_DCT)
3547  return (480 << (sr / 22050)) / ch;
3548  }
3549  }
3550 
3551  if (ba > 0) {
3552  /* calc from block_align */
3553  if (id == AV_CODEC_ID_SIPR) {
3554  switch (ba) {
3555  case 20: return 160;
3556  case 19: return 144;
3557  case 29: return 288;
3558  case 37: return 480;
3559  }
3560  } else if (id == AV_CODEC_ID_ILBC) {
3561  switch (ba) {
3562  case 38: return 160;
3563  case 50: return 240;
3564  }
3565  }
3566  }
3567 
3568  if (frame_bytes > 0) {
3569  /* calc from frame_bytes only */
3570  if (id == AV_CODEC_ID_TRUESPEECH)
3571  return 240 * (frame_bytes / 32);
3572  if (id == AV_CODEC_ID_NELLYMOSER)
3573  return 256 * (frame_bytes / 64);
3574  if (id == AV_CODEC_ID_RA_144)
3575  return 160 * (frame_bytes / 20);
3576  if (id == AV_CODEC_ID_G723_1)
3577  return 240 * (frame_bytes / 24);
3578 
3579  if (bps > 0) {
3580  /* calc from frame_bytes and bits_per_coded_sample */
3581  if (id == AV_CODEC_ID_ADPCM_G726)
3582  return frame_bytes * 8 / bps;
3583  }
3584 
3585  if (ch > 0 && ch < INT_MAX/16) {
3586  /* calc from frame_bytes and channels */
3587  switch (id) {
3588  case AV_CODEC_ID_ADPCM_AFC:
3589  return frame_bytes / (9 * ch) * 16;
3590  case AV_CODEC_ID_ADPCM_PSX:
3591  case AV_CODEC_ID_ADPCM_DTK:
3592  return frame_bytes / (16 * ch) * 28;
3593  case AV_CODEC_ID_ADPCM_4XM:
3596  return (frame_bytes - 4 * ch) * 2 / ch;
3598  return (frame_bytes - 4) * 2 / ch;
3600  return (frame_bytes - 8) * 2 / ch;
3601  case AV_CODEC_ID_ADPCM_THP:
3603  if (extradata)
3604  return frame_bytes * 14 / (8 * ch);
3605  break;
3606  case AV_CODEC_ID_ADPCM_XA:
3607  return (frame_bytes / 128) * 224 / ch;
3609  return (frame_bytes - 6 - ch) / ch;
3610  case AV_CODEC_ID_ROQ_DPCM:
3611  return (frame_bytes - 8) / ch;
3612  case AV_CODEC_ID_XAN_DPCM:
3613  return (frame_bytes - 2 * ch) / ch;
3614  case AV_CODEC_ID_MACE3:
3615  return 3 * frame_bytes / ch;
3616  case AV_CODEC_ID_MACE6:
3617  return 6 * frame_bytes / ch;
3618  case AV_CODEC_ID_PCM_LXF:
3619  return 2 * (frame_bytes / (5 * ch));
3620  case AV_CODEC_ID_IAC:
3621  case AV_CODEC_ID_IMC:
3622  return 4 * frame_bytes / ch;
3623  }
3624 
3625  if (tag) {
3626  /* calc from frame_bytes, channels, and codec_tag */
3627  if (id == AV_CODEC_ID_SOL_DPCM) {
3628  if (tag == 3)
3629  return frame_bytes / ch;
3630  else
3631  return frame_bytes * 2 / ch;
3632  }
3633  }
3634 
3635  if (ba > 0) {
3636  /* calc from frame_bytes, channels, and block_align */
3637  int blocks = frame_bytes / ba;
3638  switch (id) {
3640  if (bps < 2 || bps > 5)
3641  return 0;
3642  return blocks * (1 + (ba - 4 * ch) / (bps * ch) * 8);
3644  return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
3646  return blocks * (1 + (ba - 4 * ch) * 2 / ch);
3648  return blocks * ((ba - 4 * ch) * 2 / ch);
3649  case AV_CODEC_ID_ADPCM_MS:
3650  return blocks * (2 + (ba - 7 * ch) * 2 / ch);
3652  return blocks * (ba - 16) * 2 / ch;
3653  }
3654  }
3655 
3656  if (bps > 0) {
3657  /* calc from frame_bytes, channels, and bits_per_coded_sample */
3658  switch (id) {
3659  case AV_CODEC_ID_PCM_DVD:
3660  if(bps<4)
3661  return 0;
3662  return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
3664  if(bps<4)
3665  return 0;
3666  return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
3667  case AV_CODEC_ID_S302M:
3668  return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
3669  }
3670  }
3671  }
3672  }
3673 
3674  /* Fall back on using frame_size */
3675  if (frame_size > 1 && frame_bytes)
3676  return frame_size;
3677 
3678  //For WMA we currently have no other means to calculate duration thus we
3679  //do it here by assuming CBR, which is true for all known cases.
3680  if (bitrate > 0 && frame_bytes > 0 && sr > 0 && ba > 1) {
3681  if (id == AV_CODEC_ID_WMAV1 || id == AV_CODEC_ID_WMAV2)
3682  return (frame_bytes * 8LL * sr) / bitrate;
3683  }
3684 
3685  return 0;
3686 }
3687 
3688 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
3689 {
3690  return get_audio_frame_duration(avctx->codec_id, avctx->sample_rate,
3691  avctx->channels, avctx->block_align,
3692  avctx->codec_tag, avctx->bits_per_coded_sample,
3693  avctx->bit_rate, avctx->extradata, avctx->frame_size,
3694  frame_bytes);
3695 }
3696 
3698 {
3699  return get_audio_frame_duration(par->codec_id, par->sample_rate,
3700  par->channels, par->block_align,
3701  par->codec_tag, par->bits_per_coded_sample,
3702  par->bit_rate, par->extradata, par->frame_size,
3703  frame_bytes);
3704 }
3705 
3706 #if !HAVE_THREADS
3708 {
3709  return -1;
3710 }
3711 
3712 #endif
3713 
3714 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
3715 {
3716  unsigned int n = 0;
3717 
3718  while (v >= 0xff) {
3719  *s++ = 0xff;
3720  v -= 0xff;
3721  n++;
3722  }
3723  *s = v;
3724  n++;
3725  return n;
3726 }
3727 
3728 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
3729 {
3730  int i;
3731  for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
3732  return i;
3733 }
3734 
3735 #if FF_API_MISSING_SAMPLE
3737 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
3738 {
3739  av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your FFmpeg "
3740  "version to the newest one from Git. If the problem still "
3741  "occurs, it means that your file has a feature which has not "
3742  "been implemented.\n", feature);
3743  if(want_sample)
3745 }
3746 
3747 void av_log_ask_for_sample(void *avc, const char *msg, ...)
3748 {
3749  va_list argument_list;
3750 
3751  va_start(argument_list, msg);
3752 
3753  if (msg)
3754  av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
3755  av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
3756  "of this file to ftp://upload.ffmpeg.org/incoming/ "
3757  "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)\n");
3758 
3759  va_end(argument_list);
3760 }
3762 #endif /* FF_API_MISSING_SAMPLE */
3763 
3766 
3768 {
3769  AVHWAccel **p = last_hwaccel;
3770  hwaccel->next = NULL;
3771  while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, hwaccel))
3772  p = &(*p)->next;
3773  last_hwaccel = &hwaccel->next;
3774 }
3775 
3777 {
3778  return hwaccel ? hwaccel->next : first_hwaccel;
3779 }
3780 
3781 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
3782 {
3783  if (lockmgr_cb) {
3784  // There is no good way to rollback a failure to destroy the
3785  // mutex, so we ignore failures.
3788  lockmgr_cb = NULL;
3789  codec_mutex = NULL;
3790  avformat_mutex = NULL;
3791  }
3792 
3793  if (cb) {
3794  void *new_codec_mutex = NULL;
3795  void *new_avformat_mutex = NULL;
3796  int err;
3797  if (err = cb(&new_codec_mutex, AV_LOCK_CREATE)) {
3798  return err > 0 ? AVERROR_UNKNOWN : err;
3799  }
3800  if (err = cb(&new_avformat_mutex, AV_LOCK_CREATE)) {
3801  // Ignore failures to destroy the newly created mutex.
3802  cb(&new_codec_mutex, AV_LOCK_DESTROY);
3803  return err > 0 ? AVERROR_UNKNOWN : err;
3804  }
3805  lockmgr_cb = cb;
3806  codec_mutex = new_codec_mutex;
3807  avformat_mutex = new_avformat_mutex;
3808  }
3809 
3810  return 0;
3811 }
3812 
3813 int ff_lock_avcodec(AVCodecContext *log_ctx, const AVCodec *codec)
3814 {
3815  if (codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE || !codec->init)
3816  return 0;
3817 
3818  if (lockmgr_cb) {
3820  return -1;
3821  }
3822 
3824  av_log(log_ctx, AV_LOG_ERROR,
3825  "Insufficient thread locking. At least %d threads are "
3826  "calling avcodec_open2() at the same time right now.\n",
3828  if (!lockmgr_cb)
3829  av_log(log_ctx, AV_LOG_ERROR, "No lock manager is set, please see av_lockmgr_register()\n");
3830  ff_avcodec_locked = 1;
3831  ff_unlock_avcodec(codec);
3832  return AVERROR(EINVAL);
3833  }
3835  ff_avcodec_locked = 1;
3836  return 0;
3837 }
3838 
3839 int ff_unlock_avcodec(const AVCodec *codec)
3840 {
3841  if (codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE || !codec->init)
3842  return 0;
3843 
3845  ff_avcodec_locked = 0;
3847  if (lockmgr_cb) {
3849  return -1;
3850  }
3851 
3852  return 0;
3853 }
3854 
3856 {
3857  if (lockmgr_cb) {
3859  return -1;
3860  }
3861  return 0;
3862 }
3863 
3865 {
3866  if (lockmgr_cb) {
3868  return -1;
3869  }
3870  return 0;
3871 }
3872 
3873 unsigned int avpriv_toupper4(unsigned int x)
3874 {
3875  return av_toupper(x & 0xFF) +
3876  (av_toupper((x >> 8) & 0xFF) << 8) +
3877  (av_toupper((x >> 16) & 0xFF) << 16) +
3878 ((unsigned)av_toupper((x >> 24) & 0xFF) << 24);
3879 }
3880 
3882 {
3883  int ret;
3884 
3885  dst->owner = src->owner;
3886 
3887  ret = av_frame_ref(dst->f, src->f);
3888  if (ret < 0)
3889  return ret;
3890 
3891  av_assert0(!dst->progress);
3892 
3893  if (src->progress &&
3894  !(dst->progress = av_buffer_ref(src->progress))) {
3895  ff_thread_release_buffer(dst->owner, dst);
3896  return AVERROR(ENOMEM);
3897  }
3898 
3899  return 0;
3900 }
3901 
3902 #if !HAVE_THREADS
3903 
3905 {
3906  return ff_get_format(avctx, fmt);
3907 }
3908 
3910 {
3911  f->owner = avctx;
3912  return ff_get_buffer(avctx, f->f, flags);
3913 }
3914 
3916 {
3917  if (f->f)
3918  av_frame_unref(f->f);
3919 }
3920 
3922 {
3923 }
3924 
3925 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
3926 {
3927 }
3928 
3929 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
3930 {
3931 }
3932 
3934 {
3935  return 1;
3936 }
3937 
3939 {
3940  return 0;
3941 }
3942 
3944 {
3945 }
3946 
3947 void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
3948 {
3949 }
3950 
3951 void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n)
3952 {
3953 }
3954 
3955 #endif
3956 
3958 {
3959  return !!s->internal;
3960 }
3961 
3962 int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf)
3963 {
3964  int ret;
3965  char *str;
3966 
3967  ret = av_bprint_finalize(buf, &str);
3968  if (ret < 0)
3969  return ret;
3970  if (!av_bprint_is_complete(buf)) {
3971  av_free(str);
3972  return AVERROR(ENOMEM);
3973  }
3974 
3975  avctx->extradata = str;
3976  /* Note: the string is NUL terminated (so extradata can be read as a
3977  * string), but the ending character is not accounted in the size (in
3978  * binary formats you are likely not supposed to mux that character). When
3979  * extradata is copied, it is also padded with AV_INPUT_BUFFER_PADDING_SIZE
3980  * zeros. */
3981  avctx->extradata_size = buf->len;
3982  return 0;
3983 }
3984 
3985 const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
3986  const uint8_t *end,
3987  uint32_t *av_restrict state)
3988 {
3989  int i;
3990 
3991  av_assert0(p <= end);
3992  if (p >= end)
3993  return end;
3994 
3995  for (i = 0; i < 3; i++) {
3996  uint32_t tmp = *state << 8;
3997  *state = tmp + *(p++);
3998  if (tmp == 0x100 || p == end)
3999  return p;
4000  }
4001 
4002  while (p < end) {
4003  if (p[-1] > 1 ) p += 3;
4004  else if (p[-2] ) p += 2;
4005  else if (p[-3]|(p[-1]-1)) p++;
4006  else {
4007  p++;
4008  break;
4009  }
4010  }
4011 
4012  p = FFMIN(p, end) - 4;
4013  *state = AV_RB32(p);
4014 
4015  return p + 4;
4016 }
4017 
4019 {
4020  AVCPBProperties *props = av_mallocz(sizeof(AVCPBProperties));
4021  if (!props)
4022  return NULL;
4023 
4024  if (size)
4025  *size = sizeof(*props);
4026 
4027  props->vbv_delay = UINT64_MAX;
4028 
4029  return props;
4030 }
4031 
4033 {
4035  AVCPBProperties *props;
4036  size_t size;
4037 
4038  props = av_cpb_properties_alloc(&size);
4039  if (!props)
4040  return NULL;
4041 
4042  tmp = av_realloc_array(avctx->coded_side_data, avctx->nb_coded_side_data + 1, sizeof(*tmp));
4043  if (!tmp) {
4044  av_freep(&props);
4045  return NULL;
4046  }
4047 
4048  avctx->coded_side_data = tmp;
4049  avctx->nb_coded_side_data++;
4050 
4052  avctx->coded_side_data[avctx->nb_coded_side_data - 1].data = (uint8_t*)props;
4053  avctx->coded_side_data[avctx->nb_coded_side_data - 1].size = size;
4054 
4055  return props;
4056 }
4057 
4059 {
4060  av_freep(&par->extradata);
4061 
4062  memset(par, 0, sizeof(*par));
4063 
4065  par->codec_id = AV_CODEC_ID_NONE;
4066  par->format = -1;
4073  par->sample_aspect_ratio = (AVRational){ 0, 1 };
4074  par->profile = FF_PROFILE_UNKNOWN;
4075  par->level = FF_LEVEL_UNKNOWN;
4076 }
4077 
4079 {
4080  AVCodecParameters *par = av_mallocz(sizeof(*par));
4081 
4082  if (!par)
4083  return NULL;
4085  return par;
4086 }
4087 
4089 {
4090  AVCodecParameters *par = *ppar;
4091 
4092  if (!par)
4093  return;
4095 
4096  av_freep(ppar);
4097 }
4098 
4100 {
4102  memcpy(dst, src, sizeof(*dst));
4103 
4104  dst->extradata = NULL;
4105  dst->extradata_size = 0;
4106  if (src->extradata) {
4108  if (!dst->extradata)
4109  return AVERROR(ENOMEM);
4110  memcpy(dst->extradata, src->extradata, src->extradata_size);
4111  dst->extradata_size = src->extradata_size;
4112  }
4113 
4114  return 0;
4115 }
4116 
4118  const AVCodecContext *codec)
4119 {
4121 
4122  par->codec_type = codec->codec_type;
4123  par->codec_id = codec->codec_id;
4124  par->codec_tag = codec->codec_tag;
4125 
4126  par->bit_rate = codec->bit_rate;
4129  par->profile = codec->profile;
4130  par->level = codec->level;
4131 
4132  switch (par->codec_type) {
4133  case AVMEDIA_TYPE_VIDEO:
4134  par->format = codec->pix_fmt;
4135  par->width = codec->width;
4136  par->height = codec->height;
4137  par->field_order = codec->field_order;
4138  par->color_range = codec->color_range;
4139  par->color_primaries = codec->color_primaries;
4140  par->color_trc = codec->color_trc;
4141  par->color_space = codec->colorspace;
4144  par->video_delay = codec->has_b_frames;
4145  break;
4146  case AVMEDIA_TYPE_AUDIO:
4147  par->format = codec->sample_fmt;
4148  par->channel_layout = codec->channel_layout;
4149  par->channels = codec->channels;
4150  par->sample_rate = codec->sample_rate;
4151  par->block_align = codec->block_align;
4152  par->frame_size = codec->frame_size;
4153  par->initial_padding = codec->initial_padding;
4154  par->trailing_padding = codec->trailing_padding;
4155  par->seek_preroll = codec->seek_preroll;
4156  break;
4157  case AVMEDIA_TYPE_SUBTITLE:
4158  par->width = codec->width;
4159  par->height = codec->height;
4160  break;
4161  }
4162 
4163  if (codec->extradata) {
4165  if (!par->extradata)
4166  return AVERROR(ENOMEM);
4167  memcpy(par->extradata, codec->extradata, codec->extradata_size);
4168  par->extradata_size = codec->extradata_size;
4169  }
4170 
4171  return 0;
4172 }
4173 
4175  const AVCodecParameters *par)
4176 {
4177  codec->codec_type = par->codec_type;
4178  codec->codec_id = par->codec_id;
4179  codec->codec_tag = par->codec_tag;
4180 
4181  codec->bit_rate = par->bit_rate;
4184  codec->profile = par->profile;
4185  codec->level = par->level;
4186 
4187  switch (par->codec_type) {
4188  case AVMEDIA_TYPE_VIDEO:
4189  codec->pix_fmt = par->format;
4190  codec->width = par->width;
4191  codec->height = par->height;
4192  codec->field_order = par->field_order;
4193  codec->color_range = par->color_range;
4194  codec->color_primaries = par->color_primaries;
4195  codec->color_trc = par->color_trc;
4196  codec->colorspace = par->color_space;
4199  codec->has_b_frames = par->video_delay;
4200  break;
4201  case AVMEDIA_TYPE_AUDIO:
4202  codec->sample_fmt = par->format;
4203  codec->channel_layout = par->channel_layout;
4204  codec->channels = par->channels;
4205  codec->sample_rate = par->sample_rate;
4206  codec->block_align = par->block_align;
4207  codec->frame_size = par->frame_size;
4208  codec->delay =
4209  codec->initial_padding = par->initial_padding;
4210  codec->trailing_padding = par->trailing_padding;
4211  codec->seek_preroll = par->seek_preroll;
4212  break;
4213  case AVMEDIA_TYPE_SUBTITLE:
4214  codec->width = par->width;
4215  codec->height = par->height;
4216  break;
4217  }
4218 
4219  if (par->extradata) {
4220  av_freep(&codec->extradata);
4222  if (!codec->extradata)
4223  return AVERROR(ENOMEM);
4224  memcpy(codec->extradata, par->extradata, par->extradata_size);
4225  codec->extradata_size = par->extradata_size;
4226  }
4227 
4228  return 0;
4229 }
4230 
4231 int ff_alloc_a53_sei(const AVFrame *frame, size_t prefix_len,
4232  void **data, size_t *sei_size)
4233 {
4234  AVFrameSideData *side_data = NULL;
4235  uint8_t *sei_data;
4236 
4237  if (frame)
4238  side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_A53_CC);
4239 
4240  if (!side_data) {
4241  *data = NULL;
4242  return 0;
4243  }
4244 
4245  *sei_size = side_data->size + 11;
4246  *data = av_mallocz(*sei_size + prefix_len);
4247  if (!*data)
4248  return AVERROR(ENOMEM);
4249  sei_data = (uint8_t*)*data + prefix_len;
4250 
4251  // country code
4252  sei_data[0] = 181;
4253  sei_data[1] = 0;
4254  sei_data[2] = 49;
4255 
4256  /**
4257  * 'GA94' is standard in North America for ATSC, but hard coding
4258  * this style may not be the right thing to do -- other formats
4259  * do exist. This information is not available in the side_data
4260  * so we are going with this right now.
4261  */
4262  AV_WL32(sei_data + 3, MKTAG('G', 'A', '9', '4'));
4263  sei_data[7] = 3;
4264  sei_data[8] = ((side_data->size/3) & 0x1f) | 0x40;
4265  sei_data[9] = 0;
4266 
4267  memcpy(sei_data + 10, side_data->data, side_data->size);
4268 
4269  sei_data[side_data->size+10] = 255;
4270 
4271  return 0;
4272 }
#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:2898
static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
Definition: utils.c:2076
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:4069
float, planar
Definition: samplefmt.h:69
#define UTF8_MAX_BYTES
Definition: utils.c:2467
#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:3438
#define NULL
Definition: coverity.c:32
const struct AVCodec * codec
Definition: avcodec.h:1684
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:3374
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:4060
static int64_t get_bit_rate(AVCodecContext *ctx)
Definition: utils.c:1194
const AVCodecDescriptor * codec_descriptor
AVCodecDescriptor Code outside libavcodec should access this field using: av_codec_{get,set}_codec_descriptor(avctx)
Definition: avcodec.h:3399
static AVCodec * find_encdec(enum AVCodecID id, int encoder)
Definition: utils.c:3055
planar YUV 4:4:0,20bpp, (1 Cr & Cb sample per 1x2 Y samples), little-endian
Definition: pixfmt.h:288
const char * s
Definition: avisynth_c.h:768
planar YUV 4:4:4,42bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
Definition: pixfmt.h:265
uint32_t fourcc
Definition: hwcontext_qsv.c:90
enum AVColorTransferCharacteristic color_trc
Definition: avcodec.h:4067
#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:1361
planar YUV 4:2:0,21bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
Definition: pixfmt.h:258
static av_always_inline int pthread_mutex_destroy(pthread_mutex_t *mutex)
Definition: os2threads.h:106
#define FF_SUB_CHARENC_MODE_AUTOMATIC
libavcodec will select the mode itself
Definition: avcodec.h:3437
int64_t pts_correction_num_faulty_dts
Number of incorrect PTS values so far.
Definition: avcodec.h:3418
int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
Set various frame properties from the codec context / packet data.
Definition: utils.c:860
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:2266
This structure describes decoded (raw) audio or video data.
Definition: frame.h:184
int(* send_packet)(AVCodecContext *avctx, const AVPacket *avpkt)
Definition: avcodec.h:3696
AVCodec * avcodec_find_encoder(enum AVCodecID id)
Find a registered encoder with a matching codec ID.
Definition: utils.c:3073
int(* init)(AVCodecContext *avctx)
Initialize the hwaccel private data.
Definition: avcodec.h:3836
int stride_align[AV_NUM_DATA_POINTERS]
Definition: internal.h:97
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
planar YUV 4:2:2,28bpp, (1 Cr & Cb sample per 2x1 Y samples), little-endian
Definition: pixfmt.h:262
planar YUV 4:2:0, 15bpp, (1 Cr & Cb sample per 2x2 Y samples), little-endian
Definition: pixfmt.h:170
This side data must be associated with an audio frame and corresponds to enum AVAudioServiceType defi...
Definition: frame.h:112
enum AVCodecID id
Definition: mxfenc.c:104
#define AV_CODEC_FLAG2_SKIP_MANUAL
Do not skip samples and export skip information as frame side data.
Definition: avcodec.h:936
int coded_width
Bitstream width / height, may be different from width/height e.g.
Definition: avcodec.h:1877
int capabilities
Hardware accelerated codec capabilities.
Definition: avcodec.h:3752
const char * fmt
Definition: avisynth_c.h:769
void(* flush)(AVCodecContext *)
Flush buffers.
Definition: avcodec.h:3703
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:3781
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:6155
#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:1740
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2306
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:1620
enum AVColorRange av_frame_get_color_range(const AVFrame *frame)
AVBufferRef * buf[AV_NUM_DATA_POINTERS]
AVBuffer references backing the data for this frame.
Definition: frame.h:363
const char * g
Definition: vf_curves.c:112
const char * desc
Definition: nvenc.c:101
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:4055
int rc_initial_buffer_occupancy
Number of bits which should be loaded into the rc buffer before decoding starts.
Definition: avcodec.h:2714
static int do_decode(AVCodecContext *avctx, AVPacket *pkt)
Definition: utils.c:2742
int attribute_align_arg avcodec_receive_packet(AVCodecContext *avctx, AVPacket *avpkt)
Read encoded data from the encoder.
Definition: utils.c:2956
planar YUV 4:4:4,36bpp, (1 Cr & Cb sample per 1x1 Y samples), big-endian
Definition: pixfmt.h:263
This side data should be associated with a video stream and contains Stereoscopic 3D information in f...
Definition: avcodec.h:1430
void av_opt_set_defaults(void *s)
Set the values of all AVOption fields to their default values.
Definition: opt.c:1264
const char * avcodec_configuration(void)
Return the libavcodec build-time configuration.
Definition: utils.c:3375
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition: avcodec.h:2412
int nb_extended_buf
Number of elements in extended_buf.
Definition: frame.h:381
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: avcodec.h:3979
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:180
int ff_unlock_avcodec(const AVCodec *codec)
Definition: utils.c:3839
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:3436
int size
Definition: avcodec.h:1601
const char * b
Definition: vf_curves.c:113
const char * avcodec_license(void)
Return the libavcodec license.
Definition: utils.c:3380
enum AVPixelFormat pix_fmt
Supported pixel format.
Definition: avcodec.h:3746
static int get_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
Definition: utils.c:889
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:2086
static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
Pad last frame with silence.
Definition: utils.c:1759
AVPacket * pkt
Current packet as passed into the decoder, to avoid having to pass the packet into every function...
Definition: internal.h:144
planar YUV 4:4:4 40bpp, (1 Cr & Cb sample per 1x1 Y & A samples, little-endian)
Definition: pixfmt.h:200
int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr)
Encode a frame of audio.
Definition: utils.c:1796
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:723
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1903
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:2303
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:3959
int avpriv_codec_get_cap_skip_frame_fill_param(const AVCodec *codec)
Definition: utils.c:1184
void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
Same behaviour av_fast_malloc but the buffer has additional AV_INPUT_BUFFER_PADDING_SIZE at the end w...
Definition: utils.c:120
planar GBR 4:4:4 36bpp, little-endian
Definition: pixfmt.h:268
The following 12 formats have the disadvantage of needing 1 format for each bit depth.
Definition: pixfmt.h:167
#define AV_CODEC_CAP_EXPERIMENTAL
Codec is experimental and is thus avoided in favor of non experimental encoders.
Definition: avcodec.h:1013
void av_frame_move_ref(AVFrame *dst, AVFrame *src)
Move everything contained in src to dst and reset src.
Definition: frame.c:509
mpegvideo header.
enum AVMediaType type
Definition: avcodec.h:3612
static int convert_sub_to_old_ass_form(AVSubtitle *sub, const AVPacket *pkt, AVRational tb)
Definition: utils.c:2560
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:3131
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:3682
static AVPacket pkt
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
Definition: avcodec.h:3076
enum AVPixelFormat ff_thread_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
Wrapper around get_format() for frame-multithreaded codecs.
Definition: utils.c:3904
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:1033
int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub, int *got_sub_ptr, AVPacket *avpkt)
Decode a subtitle message.
Definition: utils.c:2618
int trailing_padding
Audio only.
Definition: avcodec.h:4115
void av_frame_set_pkt_size(AVFrame *frame, int val)
int profile
profile
Definition: avcodec.h:3180
planar GBR 4:4:4 36bpp, big-endian
Definition: pixfmt.h:267
AVCodec.
Definition: avcodec.h:3599
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:2474
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:3971
AVLockOp
Lock operation used by lockmgr.
Definition: avcodec.h:6152
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:3943
enum AVColorSpace color_space
Definition: avcodec.h:4068
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:2597
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:3737
static void * codec_mutex
Definition: utils.c:117
int frame_size
Audio only.
Definition: avcodec.h:4100
Mastering display metadata (based on SMPTE-2086:2014).
Definition: avcodec.h:1538
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avcodec.h:1812
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:653
AVSubtitleRect ** rects
Definition: avcodec.h:3960
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:2502
void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
Definition: utils.c:3947
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:1340
planar YUV 4:2:0 22.5bpp, (1 Cr & Cb sample per 2x2 Y & A samples), little-endian ...
Definition: pixfmt.h:190
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
Modify width and height values so that they will result in a memory buffer that is acceptable for the...
Definition: utils.c:432
#define FF_LEVEL_UNKNOWN
Definition: avcodec.h:3279
struct AVHWAccel * hwaccel
Hardware accelerator in use.
Definition: avcodec.h:2995
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:983
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
planar GBRA 4:4:4:4 64bpp, big-endian
Definition: pixfmt.h:229
Public dictionary API.
planar YUV 4:2:0 40bpp, (1 Cr & Cb sample per 2x2 Y & A samples, big-endian)
Definition: pixfmt.h:201
static double cb(void *priv, double x, double y)
Definition: vf_geq.c:97
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
Definition: internal.h:40
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:102
HMTX pthread_mutex_t
Definition: os2threads.h:49
int height
Definition: internal.h:96
void av_packet_free(AVPacket **pkt)
Free the packet, if the packet is reference counted, it will be unreferenced first.
Definition: avpacket.c:62
enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
Definition: utils.c:1035
enum AVSampleFormat sample_fmt
audio sample format
Definition: avcodec.h:2445
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
Lock the mutex.
Definition: avcodec.h:6154
uint8_t
#define av_cold
Definition: attributes.h:82
#define av_malloc(s)
AV_SAMPLE_FMT_U8
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:141
Opaque data information usually continuous.
Definition: avutil.h:197
int width
Video only.
Definition: avcodec.h:4045
int av_packet_unpack_dictionary(const uint8_t *data, int size, AVDictionary **dict)
Unpack a dictionary from side_data.
Definition: avpacket.c:494
#define av_assert2(cond)
assert() equivalent, that does lie in speed critical code.
Definition: avassert.h:63
8 bits with AV_PIX_FMT_RGB32 palette
Definition: pixfmt.h:73
AVOptions.
AVCodecParameters * avcodec_parameters_alloc(void)
Allocate a new AVCodecParameters and set its fields to default values (unknown/invalid/0).
Definition: utils.c:4078
int avpriv_set_systematic_pal2(uint32_t pal[256], enum AVPixelFormat pix_fmt)
Definition: imgutils.c:151
const char * av_color_range_name(enum AVColorRange range)
Definition: pixdesc.c:2579
void * thread_ctx
Definition: internal.h:138
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
static int setup_hwaccel(AVCodecContext *avctx, const enum AVPixelFormat fmt, const char *name)
Definition: utils.c:1054
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: avcodec.h:1618
static AVCodec * first_avcodec
Definition: utils.c:145
This side data contains a 3x3 transformation matrix describing an affine transformation that needs to...
Definition: avcodec.h:1424
int ff_side_data_update_matrix_encoding(AVFrame *frame, enum AVMatrixEncoding matrix_encoding)
Add or update AV_FRAME_DATA_MATRIXENCODING side data.
Definition: utils.c:240
int trailing_padding
Audio only.
Definition: avcodec.h:3563
#define AV_WL8(p, d)
Definition: intreadwrite.h:399
Multithreading support functions.
#define AV_NE(be, le)
Definition: common.h:50
int av_frame_ref(AVFrame *dst, const AVFrame *src)