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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/internal.h"
38 #include "libavutil/mathematics.h"
39 #include "libavutil/pixdesc.h"
40 #include "libavutil/imgutils.h"
41 #include "libavutil/samplefmt.h"
42 #include "libavutil/dict.h"
43 #include "avcodec.h"
44 #include "libavutil/opt.h"
45 #include "me_cmp.h"
46 #include "mpegvideo.h"
47 #include "thread.h"
48 #include "frame_thread_encoder.h"
49 #include "internal.h"
50 #include "raw.h"
51 #include "bytestream.h"
52 #include "version.h"
53 #include <stdlib.h>
54 #include <stdarg.h>
55 #include <limits.h>
56 #include <float.h>
57 #if CONFIG_ICONV
58 # include <iconv.h>
59 #endif
60 
61 #if HAVE_PTHREADS
62 #include <pthread.h>
63 #elif HAVE_W32THREADS
64 #include "compat/w32pthreads.h"
65 #elif HAVE_OS2THREADS
66 #include "compat/os2threads.h"
67 #endif
68 
69 #include "libavutil/ffversion.h"
70 const char av_codec_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
71 
72 #if HAVE_PTHREADS || HAVE_W32THREADS || HAVE_OS2THREADS
73 static int default_lockmgr_cb(void **arg, enum AVLockOp op)
74 {
75  void * volatile * mutex = arg;
76  int err;
77 
78  switch (op) {
79  case AV_LOCK_CREATE:
80  return 0;
81  case AV_LOCK_OBTAIN:
82  if (!*mutex) {
84  if (!tmp)
85  return AVERROR(ENOMEM);
86  if ((err = pthread_mutex_init(tmp, NULL))) {
87  av_free(tmp);
88  return AVERROR(err);
89  }
90  if (avpriv_atomic_ptr_cas(mutex, NULL, tmp)) {
92  av_free(tmp);
93  }
94  }
95 
96  if ((err = pthread_mutex_lock(*mutex)))
97  return AVERROR(err);
98 
99  return 0;
100  case AV_LOCK_RELEASE:
101  if ((err = pthread_mutex_unlock(*mutex)))
102  return AVERROR(err);
103 
104  return 0;
105  case AV_LOCK_DESTROY:
106  if (*mutex)
107  pthread_mutex_destroy(*mutex);
108  av_free(*mutex);
109  avpriv_atomic_ptr_cas(mutex, *mutex, NULL);
110  return 0;
111  }
112  return 1;
113 }
114 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = default_lockmgr_cb;
115 #else
116 static int (*lockmgr_cb)(void **mutex, enum AVLockOp op) = NULL;
117 #endif
118 
119 
120 volatile int ff_avcodec_locked;
121 static int volatile entangled_thread_counter = 0;
122 static void *codec_mutex;
123 static void *avformat_mutex;
124 
125 static inline int ff_fast_malloc(void *ptr, unsigned int *size, size_t min_size, int zero_realloc)
126 {
127  void **p = ptr;
128  if (min_size <= *size && *p)
129  return 0;
130  min_size = FFMAX(17 * min_size / 16 + 32, min_size);
131  av_free(*p);
132  *p = zero_realloc ? av_mallocz(min_size) : av_malloc(min_size);
133  if (!*p)
134  min_size = 0;
135  *size = min_size;
136  return 1;
137 }
138 
139 void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
140 {
141  uint8_t **p = ptr;
142  if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
143  av_freep(p);
144  *size = 0;
145  return;
146  }
147  if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1))
148  memset(*p + min_size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
149 }
150 
151 void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size)
152 {
153  uint8_t **p = ptr;
154  if (min_size > SIZE_MAX - FF_INPUT_BUFFER_PADDING_SIZE) {
155  av_freep(p);
156  *size = 0;
157  return;
158  }
159  if (!ff_fast_malloc(p, size, min_size + FF_INPUT_BUFFER_PADDING_SIZE, 1))
160  memset(*p, 0, min_size + FF_INPUT_BUFFER_PADDING_SIZE);
161 }
162 
163 /* encoder management */
166 
168 {
169  if (c)
170  return c->next;
171  else
172  return first_avcodec;
173 }
174 
175 static av_cold void avcodec_init(void)
176 {
177  static int initialized = 0;
178 
179  if (initialized != 0)
180  return;
181  initialized = 1;
182 
183  if (CONFIG_ME_CMP)
185 }
186 
187 int av_codec_is_encoder(const AVCodec *codec)
188 {
189  return codec && (codec->encode_sub || codec->encode2);
190 }
191 
192 int av_codec_is_decoder(const AVCodec *codec)
193 {
194  return codec && codec->decode;
195 }
196 
198 {
199  AVCodec **p;
200  avcodec_init();
201  p = last_avcodec;
202  codec->next = NULL;
203 
204  while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, codec))
205  p = &(*p)->next;
206  last_avcodec = &codec->next;
207 
208  if (codec->init_static_data)
209  codec->init_static_data(codec);
210 }
211 
212 #if FF_API_EMU_EDGE
214 {
215  return EDGE_WIDTH;
216 }
217 #endif
218 
219 #if FF_API_SET_DIMENSIONS
221 {
222  int ret = ff_set_dimensions(s, width, height);
223  if (ret < 0) {
224  av_log(s, AV_LOG_WARNING, "Failed to set dimensions %d %d\n", width, height);
225  }
226 }
227 #endif
228 
230 {
231  int ret = av_image_check_size(width, height, 0, s);
232 
233  if (ret < 0)
234  width = height = 0;
235 
236  s->coded_width = width;
237  s->coded_height = height;
238  s->width = FF_CEIL_RSHIFT(width, s->lowres);
239  s->height = FF_CEIL_RSHIFT(height, s->lowres);
240 
241  return ret;
242 }
243 
245 {
246  int ret = av_image_check_sar(avctx->width, avctx->height, sar);
247 
248  if (ret < 0) {
249  av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %d/%d\n",
250  sar.num, sar.den);
251  avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
252  return ret;
253  } else {
254  avctx->sample_aspect_ratio = sar;
255  }
256  return 0;
257 }
258 
260  enum AVMatrixEncoding matrix_encoding)
261 {
262  AVFrameSideData *side_data;
263  enum AVMatrixEncoding *data;
264 
266  if (!side_data)
268  sizeof(enum AVMatrixEncoding));
269 
270  if (!side_data)
271  return AVERROR(ENOMEM);
272 
273  data = (enum AVMatrixEncoding*)side_data->data;
274  *data = matrix_encoding;
275 
276  return 0;
277 }
278 
280  int linesize_align[AV_NUM_DATA_POINTERS])
281 {
282  int i;
283  int w_align = 1;
284  int h_align = 1;
286 
287  if (desc) {
288  w_align = 1 << desc->log2_chroma_w;
289  h_align = 1 << desc->log2_chroma_h;
290  }
291 
292  switch (s->pix_fmt) {
293  case AV_PIX_FMT_YUV420P:
294  case AV_PIX_FMT_YUYV422:
295  case AV_PIX_FMT_YVYU422:
296  case AV_PIX_FMT_UYVY422:
297  case AV_PIX_FMT_YUV422P:
298  case AV_PIX_FMT_YUV440P:
299  case AV_PIX_FMT_YUV444P:
300  case AV_PIX_FMT_GBRP:
301  case AV_PIX_FMT_GBRAP:
302  case AV_PIX_FMT_GRAY8:
303  case AV_PIX_FMT_GRAY16BE:
304  case AV_PIX_FMT_GRAY16LE:
305  case AV_PIX_FMT_YUVJ420P:
306  case AV_PIX_FMT_YUVJ422P:
307  case AV_PIX_FMT_YUVJ440P:
308  case AV_PIX_FMT_YUVJ444P:
309  case AV_PIX_FMT_YUVA420P:
310  case AV_PIX_FMT_YUVA422P:
311  case AV_PIX_FMT_YUVA444P:
360  case AV_PIX_FMT_GBRP9LE:
361  case AV_PIX_FMT_GBRP9BE:
362  case AV_PIX_FMT_GBRP10LE:
363  case AV_PIX_FMT_GBRP10BE:
364  case AV_PIX_FMT_GBRP12LE:
365  case AV_PIX_FMT_GBRP12BE:
366  case AV_PIX_FMT_GBRP14LE:
367  case AV_PIX_FMT_GBRP14BE:
368  case AV_PIX_FMT_GBRP16LE:
369  case AV_PIX_FMT_GBRP16BE:
370  w_align = 16; //FIXME assume 16 pixel per macroblock
371  h_align = 16 * 2; // interlaced needs 2 macroblocks height
372  break;
373  case AV_PIX_FMT_YUV411P:
374  case AV_PIX_FMT_YUVJ411P:
376  w_align = 32;
377  h_align = 16 * 2;
378  break;
379  case AV_PIX_FMT_YUV410P:
380  if (s->codec_id == AV_CODEC_ID_SVQ1) {
381  w_align = 64;
382  h_align = 64;
383  }
384  break;
385  case AV_PIX_FMT_RGB555:
386  if (s->codec_id == AV_CODEC_ID_RPZA) {
387  w_align = 4;
388  h_align = 4;
389  }
390  break;
391  case AV_PIX_FMT_PAL8:
392  case AV_PIX_FMT_BGR8:
393  case AV_PIX_FMT_RGB8:
394  if (s->codec_id == AV_CODEC_ID_SMC ||
396  w_align = 4;
397  h_align = 4;
398  }
399  if (s->codec_id == AV_CODEC_ID_JV) {
400  w_align = 8;
401  h_align = 8;
402  }
403  break;
404  case AV_PIX_FMT_BGR24:
405  if ((s->codec_id == AV_CODEC_ID_MSZH) ||
406  (s->codec_id == AV_CODEC_ID_ZLIB)) {
407  w_align = 4;
408  h_align = 4;
409  }
410  break;
411  case AV_PIX_FMT_RGB24:
412  if (s->codec_id == AV_CODEC_ID_CINEPAK) {
413  w_align = 4;
414  h_align = 4;
415  }
416  break;
417  default:
418  break;
419  }
420 
422  w_align = FFMAX(w_align, 8);
423  }
424 
425  *width = FFALIGN(*width, w_align);
426  *height = FFALIGN(*height, h_align);
427  if (s->codec_id == AV_CODEC_ID_H264 || s->lowres)
428  // some of the optimized chroma MC reads one line too much
429  // which is also done in mpeg decoders with lowres > 0
430  *height += 2;
431 
432  for (i = 0; i < 4; i++)
433  linesize_align[i] = STRIDE_ALIGN;
434 }
435 
437 {
439  int chroma_shift = desc->log2_chroma_w;
440  int linesize_align[AV_NUM_DATA_POINTERS];
441  int align;
442 
443  avcodec_align_dimensions2(s, width, height, linesize_align);
444  align = FFMAX(linesize_align[0], linesize_align[3]);
445  linesize_align[1] <<= chroma_shift;
446  linesize_align[2] <<= chroma_shift;
447  align = FFMAX3(align, linesize_align[1], linesize_align[2]);
448  *width = FFALIGN(*width, align);
449 }
450 
451 int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
452 {
453  if (pos <= AVCHROMA_LOC_UNSPECIFIED || pos >= AVCHROMA_LOC_NB)
454  return AVERROR(EINVAL);
455  pos--;
456 
457  *xpos = (pos&1) * 128;
458  *ypos = ((pos>>1)^(pos<4)) * 128;
459 
460  return 0;
461 }
462 
464 {
465  int pos, xout, yout;
466 
467  for (pos = AVCHROMA_LOC_UNSPECIFIED + 1; pos < AVCHROMA_LOC_NB; pos++) {
468  if (avcodec_enum_to_chroma_pos(&xout, &yout, pos) == 0 && xout == xpos && yout == ypos)
469  return pos;
470  }
472 }
473 
475  enum AVSampleFormat sample_fmt, const uint8_t *buf,
476  int buf_size, int align)
477 {
478  int ch, planar, needed_size, ret = 0;
479 
480  needed_size = av_samples_get_buffer_size(NULL, nb_channels,
481  frame->nb_samples, sample_fmt,
482  align);
483  if (buf_size < needed_size)
484  return AVERROR(EINVAL);
485 
486  planar = av_sample_fmt_is_planar(sample_fmt);
487  if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
488  if (!(frame->extended_data = av_mallocz_array(nb_channels,
489  sizeof(*frame->extended_data))))
490  return AVERROR(ENOMEM);
491  } else {
492  frame->extended_data = frame->data;
493  }
494 
495  if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
496  (uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
497  sample_fmt, align)) < 0) {
498  if (frame->extended_data != frame->data)
499  av_freep(&frame->extended_data);
500  return ret;
501  }
502  if (frame->extended_data != frame->data) {
503  for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
504  frame->data[ch] = frame->extended_data[ch];
505  }
506 
507  return ret;
508 }
509 
511 {
512  FramePool *pool = avctx->internal->pool;
513  int i, ret;
514 
515  switch (avctx->codec_type) {
516  case AVMEDIA_TYPE_VIDEO: {
517  AVPicture picture;
518  int size[4] = { 0 };
519  int w = frame->width;
520  int h = frame->height;
521  int tmpsize, unaligned;
522 
523  if (pool->format == frame->format &&
524  pool->width == frame->width && pool->height == frame->height)
525  return 0;
526 
527  avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
528 
529  do {
530  // NOTE: do not align linesizes individually, this breaks e.g. assumptions
531  // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
532  av_image_fill_linesizes(picture.linesize, avctx->pix_fmt, w);
533  // increase alignment of w for next try (rhs gives the lowest bit set in w)
534  w += w & ~(w - 1);
535 
536  unaligned = 0;
537  for (i = 0; i < 4; i++)
538  unaligned |= picture.linesize[i] % pool->stride_align[i];
539  } while (unaligned);
540 
541  tmpsize = av_image_fill_pointers(picture.data, avctx->pix_fmt, h,
542  NULL, picture.linesize);
543  if (tmpsize < 0)
544  return -1;
545 
546  for (i = 0; i < 3 && picture.data[i + 1]; i++)
547  size[i] = picture.data[i + 1] - picture.data[i];
548  size[i] = tmpsize - (picture.data[i] - picture.data[0]);
549 
550  for (i = 0; i < 4; i++) {
551  av_buffer_pool_uninit(&pool->pools[i]);
552  pool->linesize[i] = picture.linesize[i];
553  if (size[i]) {
554  pool->pools[i] = av_buffer_pool_init(size[i] + 16 + STRIDE_ALIGN - 1,
555  CONFIG_MEMORY_POISONING ?
556  NULL :
558  if (!pool->pools[i]) {
559  ret = AVERROR(ENOMEM);
560  goto fail;
561  }
562  }
563  }
564  pool->format = frame->format;
565  pool->width = frame->width;
566  pool->height = frame->height;
567 
568  break;
569  }
570  case AVMEDIA_TYPE_AUDIO: {
571  int ch = av_frame_get_channels(frame); //av_get_channel_layout_nb_channels(frame->channel_layout);
572  int planar = av_sample_fmt_is_planar(frame->format);
573  int planes = planar ? ch : 1;
574 
575  if (pool->format == frame->format && pool->planes == planes &&
576  pool->channels == ch && frame->nb_samples == pool->samples)
577  return 0;
578 
579  av_buffer_pool_uninit(&pool->pools[0]);
580  ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
581  frame->nb_samples, frame->format, 0);
582  if (ret < 0)
583  goto fail;
584 
585  pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
586  if (!pool->pools[0]) {
587  ret = AVERROR(ENOMEM);
588  goto fail;
589  }
590 
591  pool->format = frame->format;
592  pool->planes = planes;
593  pool->channels = ch;
594  pool->samples = frame->nb_samples;
595  break;
596  }
597  default: av_assert0(0);
598  }
599  return 0;
600 fail:
601  for (i = 0; i < 4; i++)
602  av_buffer_pool_uninit(&pool->pools[i]);
603  pool->format = -1;
604  pool->planes = pool->channels = pool->samples = 0;
605  pool->width = pool->height = 0;
606  return ret;
607 }
608 
610 {
611  FramePool *pool = avctx->internal->pool;
612  int planes = pool->planes;
613  int i;
614 
615  frame->linesize[0] = pool->linesize[0];
616 
617  if (planes > AV_NUM_DATA_POINTERS) {
618  frame->extended_data = av_mallocz_array(planes, sizeof(*frame->extended_data));
619  frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
621  sizeof(*frame->extended_buf));
622  if (!frame->extended_data || !frame->extended_buf) {
623  av_freep(&frame->extended_data);
624  av_freep(&frame->extended_buf);
625  return AVERROR(ENOMEM);
626  }
627  } else {
628  frame->extended_data = frame->data;
629  av_assert0(frame->nb_extended_buf == 0);
630  }
631 
632  for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
633  frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
634  if (!frame->buf[i])
635  goto fail;
636  frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
637  }
638  for (i = 0; i < frame->nb_extended_buf; i++) {
639  frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
640  if (!frame->extended_buf[i])
641  goto fail;
642  frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
643  }
644 
645  if (avctx->debug & FF_DEBUG_BUFFERS)
646  av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
647 
648  return 0;
649 fail:
650  av_frame_unref(frame);
651  return AVERROR(ENOMEM);
652 }
653 
655 {
656  FramePool *pool = s->internal->pool;
657  int i;
658 
659  if (pic->data[0]) {
660  av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n");
661  return -1;
662  }
663 
664  memset(pic->data, 0, sizeof(pic->data));
665  pic->extended_data = pic->data;
666 
667  for (i = 0; i < 4 && pool->pools[i]; i++) {
668  pic->linesize[i] = pool->linesize[i];
669 
670  pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
671  if (!pic->buf[i])
672  goto fail;
673 
674  pic->data[i] = pic->buf[i]->data;
675  }
676  for (; i < AV_NUM_DATA_POINTERS; i++) {
677  pic->data[i] = NULL;
678  pic->linesize[i] = 0;
679  }
680  if (pic->data[1] && !pic->data[2])
681  avpriv_set_systematic_pal2((uint32_t *)pic->data[1], s->pix_fmt);
682 
683  if (s->debug & FF_DEBUG_BUFFERS)
684  av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
685 
686  return 0;
687 fail:
688  av_frame_unref(pic);
689  return AVERROR(ENOMEM);
690 }
691 
692 void avpriv_color_frame(AVFrame *frame, const int c[4])
693 {
694  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
695  int p, y, x;
696 
698 
699  for (p = 0; p<desc->nb_components; p++) {
700  uint8_t *dst = frame->data[p];
701  int is_chroma = p == 1 || p == 2;
702  int bytes = is_chroma ? FF_CEIL_RSHIFT(frame->width, desc->log2_chroma_w) : frame->width;
703  int height = is_chroma ? FF_CEIL_RSHIFT(frame->height, desc->log2_chroma_h) : frame->height;
704  for (y = 0; y < height; y++) {
705  if (desc->comp[0].depth_minus1 >= 8) {
706  for (x = 0; x<bytes; x++)
707  ((uint16_t*)dst)[x] = c[p];
708  }else
709  memset(dst, c[p], bytes);
710  dst += frame->linesize[p];
711  }
712  }
713 }
714 
716 {
717  int ret;
718 
719  if ((ret = update_frame_pool(avctx, frame)) < 0)
720  return ret;
721 
722 #if FF_API_GET_BUFFER
724  frame->type = FF_BUFFER_TYPE_INTERNAL;
726 #endif
727 
728  switch (avctx->codec_type) {
729  case AVMEDIA_TYPE_VIDEO:
730  return video_get_buffer(avctx, frame);
731  case AVMEDIA_TYPE_AUDIO:
732  return audio_get_buffer(avctx, frame);
733  default:
734  return -1;
735  }
736 }
737 
739 {
740  AVPacket *pkt = avctx->internal->pkt;
741  int i;
742  static const struct {
743  enum AVPacketSideDataType packet;
745  } sd[] = {
750  };
751 
752  if (pkt) {
753  frame->pkt_pts = pkt->pts;
754  av_frame_set_pkt_pos (frame, pkt->pos);
755  av_frame_set_pkt_duration(frame, pkt->duration);
756  av_frame_set_pkt_size (frame, pkt->size);
757 
758  for (i = 0; i < FF_ARRAY_ELEMS(sd); i++) {
759  int size;
760  uint8_t *packet_sd = av_packet_get_side_data(pkt, sd[i].packet, &size);
761  if (packet_sd) {
762  AVFrameSideData *frame_sd = av_frame_new_side_data(frame,
763  sd[i].frame,
764  size);
765  if (!frame_sd)
766  return AVERROR(ENOMEM);
767 
768  memcpy(frame_sd->data, packet_sd, size);
769  }
770  }
771  } else {
772  frame->pkt_pts = AV_NOPTS_VALUE;
773  av_frame_set_pkt_pos (frame, -1);
774  av_frame_set_pkt_duration(frame, 0);
775  av_frame_set_pkt_size (frame, -1);
776  }
777  frame->reordered_opaque = avctx->reordered_opaque;
778 
780  frame->color_primaries = avctx->color_primaries;
781  if (frame->color_trc == AVCOL_TRC_UNSPECIFIED)
782  frame->color_trc = avctx->color_trc;
784  av_frame_set_colorspace(frame, avctx->colorspace);
786  av_frame_set_color_range(frame, avctx->color_range);
788  frame->chroma_location = avctx->chroma_sample_location;
789 
790  switch (avctx->codec->type) {
791  case AVMEDIA_TYPE_VIDEO:
792  frame->format = avctx->pix_fmt;
793  if (!frame->sample_aspect_ratio.num)
795 
796  if (frame->width && frame->height &&
797  av_image_check_sar(frame->width, frame->height,
798  frame->sample_aspect_ratio) < 0) {
799  av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
800  frame->sample_aspect_ratio.num,
801  frame->sample_aspect_ratio.den);
802  frame->sample_aspect_ratio = (AVRational){ 0, 1 };
803  }
804 
805  break;
806  case AVMEDIA_TYPE_AUDIO:
807  if (!frame->sample_rate)
808  frame->sample_rate = avctx->sample_rate;
809  if (frame->format < 0)
810  frame->format = avctx->sample_fmt;
811  if (!frame->channel_layout) {
812  if (avctx->channel_layout) {
814  avctx->channels) {
815  av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
816  "configuration.\n");
817  return AVERROR(EINVAL);
818  }
819 
820  frame->channel_layout = avctx->channel_layout;
821  } else {
822  if (avctx->channels > FF_SANE_NB_CHANNELS) {
823  av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
824  avctx->channels);
825  return AVERROR(ENOSYS);
826  }
827  }
828  }
829  av_frame_set_channels(frame, avctx->channels);
830  break;
831  }
832  return 0;
833 }
834 
835 #if FF_API_GET_BUFFER
838 {
839  return avcodec_default_get_buffer2(avctx, frame, 0);
840 }
841 
842 typedef struct CompatReleaseBufPriv {
845  uint8_t avframe_padding[1024]; // hack to allow linking to a avutil with larger AVFrame
847 
848 static void compat_free_buffer(void *opaque, uint8_t *data)
849 {
850  CompatReleaseBufPriv *priv = opaque;
851  if (priv->avctx.release_buffer)
852  priv->avctx.release_buffer(&priv->avctx, &priv->frame);
853  av_freep(&priv);
854 }
855 
856 static void compat_release_buffer(void *opaque, uint8_t *data)
857 {
858  AVBufferRef *buf = opaque;
859  av_buffer_unref(&buf);
860 }
862 #endif
863 
865 {
866  return ff_init_buffer_info(avctx, frame);
867 }
868 
870 {
871  const AVHWAccel *hwaccel = avctx->hwaccel;
872  int override_dimensions = 1;
873  int ret;
874 
875  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
876  if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0 || avctx->pix_fmt<0) {
877  av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
878  return AVERROR(EINVAL);
879  }
880  }
881  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
882  if (frame->width <= 0 || frame->height <= 0) {
883  frame->width = FFMAX(avctx->width, FF_CEIL_RSHIFT(avctx->coded_width, avctx->lowres));
884  frame->height = FFMAX(avctx->height, FF_CEIL_RSHIFT(avctx->coded_height, avctx->lowres));
885  override_dimensions = 0;
886  }
887  }
888  ret = ff_decode_frame_props(avctx, frame);
889  if (ret < 0)
890  return ret;
891  if ((ret = ff_init_buffer_info(avctx, frame)) < 0)
892  return ret;
893 
894  if (hwaccel) {
895  if (hwaccel->alloc_frame) {
896  ret = hwaccel->alloc_frame(avctx, frame);
897  goto end;
898  }
899  } else
900  avctx->sw_pix_fmt = avctx->pix_fmt;
901 
902 #if FF_API_GET_BUFFER
904  /*
905  * Wrap an old get_buffer()-allocated buffer in a bunch of AVBuffers.
906  * We wrap each plane in its own AVBuffer. Each of those has a reference to
907  * a dummy AVBuffer as its private data, unreffing it on free.
908  * When all the planes are freed, the dummy buffer's free callback calls
909  * release_buffer().
910  */
911  if (avctx->get_buffer) {
912  CompatReleaseBufPriv *priv = NULL;
913  AVBufferRef *dummy_buf = NULL;
914  int planes, i, ret;
915 
916  if (flags & AV_GET_BUFFER_FLAG_REF)
917  frame->reference = 1;
918 
919  ret = avctx->get_buffer(avctx, frame);
920  if (ret < 0)
921  return ret;
922 
923  /* return if the buffers are already set up
924  * this would happen e.g. when a custom get_buffer() calls
925  * avcodec_default_get_buffer
926  */
927  if (frame->buf[0])
928  goto end0;
929 
930  priv = av_mallocz(sizeof(*priv));
931  if (!priv) {
932  ret = AVERROR(ENOMEM);
933  goto fail;
934  }
935  priv->avctx = *avctx;
936  priv->frame = *frame;
937 
938  dummy_buf = av_buffer_create(NULL, 0, compat_free_buffer, priv, 0);
939  if (!dummy_buf) {
940  ret = AVERROR(ENOMEM);
941  goto fail;
942  }
943 
944 #define WRAP_PLANE(ref_out, data, data_size) \
945 do { \
946  AVBufferRef *dummy_ref = av_buffer_ref(dummy_buf); \
947  if (!dummy_ref) { \
948  ret = AVERROR(ENOMEM); \
949  goto fail; \
950  } \
951  ref_out = av_buffer_create(data, data_size, compat_release_buffer, \
952  dummy_ref, 0); \
953  if (!ref_out) { \
954  av_frame_unref(frame); \
955  ret = AVERROR(ENOMEM); \
956  goto fail; \
957  } \
958 } while (0)
959 
960  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
961  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
962 
963  planes = av_pix_fmt_count_planes(frame->format);
964  /* workaround for AVHWAccel plane count of 0, buf[0] is used as
965  check for allocated buffers: make libavcodec happy */
966  if (desc && desc->flags & AV_PIX_FMT_FLAG_HWACCEL)
967  planes = 1;
968  if (!desc || planes <= 0) {
969  ret = AVERROR(EINVAL);
970  goto fail;
971  }
972 
973  for (i = 0; i < planes; i++) {
974  int v_shift = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
975  int plane_size = (frame->height >> v_shift) * frame->linesize[i];
976 
977  WRAP_PLANE(frame->buf[i], frame->data[i], plane_size);
978  }
979  } else {
980  int planar = av_sample_fmt_is_planar(frame->format);
981  planes = planar ? avctx->channels : 1;
982 
983  if (planes > FF_ARRAY_ELEMS(frame->buf)) {
984  frame->nb_extended_buf = planes - FF_ARRAY_ELEMS(frame->buf);
985  frame->extended_buf = av_malloc_array(sizeof(*frame->extended_buf),
986  frame->nb_extended_buf);
987  if (!frame->extended_buf) {
988  ret = AVERROR(ENOMEM);
989  goto fail;
990  }
991  }
992 
993  for (i = 0; i < FFMIN(planes, FF_ARRAY_ELEMS(frame->buf)); i++)
994  WRAP_PLANE(frame->buf[i], frame->extended_data[i], frame->linesize[0]);
995 
996  for (i = 0; i < frame->nb_extended_buf; i++)
997  WRAP_PLANE(frame->extended_buf[i],
998  frame->extended_data[i + FF_ARRAY_ELEMS(frame->buf)],
999  frame->linesize[0]);
1000  }
1001 
1002  av_buffer_unref(&dummy_buf);
1003 
1004 end0:
1005  frame->width = avctx->width;
1006  frame->height = avctx->height;
1007 
1008  return 0;
1009 
1010 fail:
1011  avctx->release_buffer(avctx, frame);
1012  av_freep(&priv);
1013  av_buffer_unref(&dummy_buf);
1014  return ret;
1015  }
1017 #endif
1018 
1019  ret = avctx->get_buffer2(avctx, frame, flags);
1020 
1021 end:
1022  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions) {
1023  frame->width = avctx->width;
1024  frame->height = avctx->height;
1025  }
1026 
1027  return ret;
1028 }
1029 
1031 {
1032  int ret = get_buffer_internal(avctx, frame, flags);
1033  if (ret < 0)
1034  av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
1035  return ret;
1036 }
1037 
1039 {
1040  AVFrame *tmp;
1041  int ret;
1042 
1044 
1045  if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
1046  av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
1047  frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt));
1048  av_frame_unref(frame);
1049  }
1050 
1051  ff_init_buffer_info(avctx, frame);
1052 
1053  if (!frame->data[0])
1054  return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1055 
1056  if (av_frame_is_writable(frame))
1057  return ff_decode_frame_props(avctx, frame);
1058 
1059  tmp = av_frame_alloc();
1060  if (!tmp)
1061  return AVERROR(ENOMEM);
1062 
1063  av_frame_move_ref(tmp, frame);
1064 
1065  ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1066  if (ret < 0) {
1067  av_frame_free(&tmp);
1068  return ret;
1069  }
1070 
1071  av_frame_copy(frame, tmp);
1072  av_frame_free(&tmp);
1073 
1074  return 0;
1075 }
1076 
1078 {
1079  int ret = reget_buffer_internal(avctx, frame);
1080  if (ret < 0)
1081  av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
1082  return ret;
1083 }
1084 
1085 #if FF_API_GET_BUFFER
1087 {
1089 
1090  av_frame_unref(pic);
1091 }
1092 
1094 {
1095  av_assert0(0);
1096  return AVERROR_BUG;
1097 }
1098 #endif
1099 
1100 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
1101 {
1102  int i;
1103 
1104  for (i = 0; i < count; i++) {
1105  int r = func(c, (char *)arg + i * size);
1106  if (ret)
1107  ret[i] = r;
1108  }
1109  return 0;
1110 }
1111 
1112 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
1113 {
1114  int i;
1115 
1116  for (i = 0; i < count; i++) {
1117  int r = func(c, arg, i, 0);
1118  if (ret)
1119  ret[i] = r;
1120  }
1121  return 0;
1122 }
1123 
1125  unsigned int fourcc)
1126 {
1127  while (tags->pix_fmt >= 0) {
1128  if (tags->fourcc == fourcc)
1129  return tags->pix_fmt;
1130  tags++;
1131  }
1132  return AV_PIX_FMT_NONE;
1133 }
1134 
1136 {
1137  const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
1138  return desc->flags & AV_PIX_FMT_FLAG_HWACCEL;
1139 }
1140 
1142 {
1143  while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt))
1144  ++fmt;
1145  return fmt[0];
1146 }
1147 
1149  enum AVPixelFormat pix_fmt)
1150 {
1151  AVHWAccel *hwaccel = NULL;
1152 
1153  while ((hwaccel = av_hwaccel_next(hwaccel)))
1154  if (hwaccel->id == codec_id
1155  && hwaccel->pix_fmt == pix_fmt)
1156  return hwaccel;
1157  return NULL;
1158 }
1159 
1160 static int setup_hwaccel(AVCodecContext *avctx,
1161  const enum AVPixelFormat fmt,
1162  const char *name)
1163 {
1164  AVHWAccel *hwa = find_hwaccel(avctx->codec_id, fmt);
1165  int ret = 0;
1166 
1167  if (!hwa) {
1168  av_log(avctx, AV_LOG_ERROR,
1169  "Could not find an AVHWAccel for the pixel format: %s",
1170  name);
1171  return AVERROR(ENOENT);
1172  }
1173 
1174  if (hwa->priv_data_size) {
1176  if (!avctx->internal->hwaccel_priv_data)
1177  return AVERROR(ENOMEM);
1178  }
1179 
1180  if (hwa->init) {
1181  ret = hwa->init(avctx);
1182  if (ret < 0) {
1184  return ret;
1185  }
1186  }
1187 
1188  avctx->hwaccel = hwa;
1189 
1190  return 0;
1191 }
1192 
1194 {
1195  const AVPixFmtDescriptor *desc;
1196  enum AVPixelFormat *choices;
1197  enum AVPixelFormat ret;
1198  unsigned n = 0;
1199 
1200  while (fmt[n] != AV_PIX_FMT_NONE)
1201  ++n;
1202 
1203  av_assert0(n >= 1);
1204  avctx->sw_pix_fmt = fmt[n - 1];
1206 
1207  choices = av_malloc_array(n + 1, sizeof(*choices));
1208  if (!choices)
1209  return AV_PIX_FMT_NONE;
1210 
1211  memcpy(choices, fmt, (n + 1) * sizeof(*choices));
1212 
1213  for (;;) {
1214  if (avctx->hwaccel && avctx->hwaccel->uninit)
1215  avctx->hwaccel->uninit(avctx);
1217  avctx->hwaccel = NULL;
1218 
1219  ret = avctx->get_format(avctx, choices);
1220 
1221  desc = av_pix_fmt_desc_get(ret);
1222  if (!desc) {
1223  ret = AV_PIX_FMT_NONE;
1224  break;
1225  }
1226 
1227  if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
1228  break;
1230  break;
1231 
1232  if (!setup_hwaccel(avctx, ret, desc->name))
1233  break;
1234 
1235  /* Remove failed hwaccel from choices */
1236  for (n = 0; choices[n] != ret; n++)
1237  av_assert0(choices[n] != AV_PIX_FMT_NONE);
1238 
1239  do
1240  choices[n] = choices[n + 1];
1241  while (choices[n++] != AV_PIX_FMT_NONE);
1242  }
1243 
1244  av_freep(&choices);
1245  return ret;
1246 }
1247 
1248 #if FF_API_AVFRAME_LAVC
1249 void avcodec_get_frame_defaults(AVFrame *frame)
1250 {
1251 #if LIBAVCODEC_VERSION_MAJOR >= 55
1252  // extended_data should explicitly be freed when needed, this code is unsafe currently
1253  // also this is not compatible to the <55 ABI/API
1254  if (frame->extended_data != frame->data && 0)
1255  av_freep(&frame->extended_data);
1256 #endif
1257 
1258  memset(frame, 0, sizeof(AVFrame));
1259  av_frame_unref(frame);
1260 }
1261 
1262 AVFrame *avcodec_alloc_frame(void)
1263 {
1264  return av_frame_alloc();
1265 }
1266 
1267 void avcodec_free_frame(AVFrame **frame)
1268 {
1269  av_frame_free(frame);
1270 }
1271 #endif
1272 
1273 MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
1274 MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor)
1275 MAKE_ACCESSORS(AVCodecContext, codec, int, lowres)
1276 MAKE_ACCESSORS(AVCodecContext, codec, int, seek_preroll)
1277 MAKE_ACCESSORS(AVCodecContext, codec, uint16_t*, chroma_intra_matrix)
1278 
1280 {
1281  return codec->max_lowres;
1282 }
1283 
1285 {
1286  memset(sub, 0, sizeof(*sub));
1287  sub->pts = AV_NOPTS_VALUE;
1288 }
1289 
1291 {
1292  int bit_rate;
1293  int bits_per_sample;
1294 
1295  switch (ctx->codec_type) {
1296  case AVMEDIA_TYPE_VIDEO:
1297  case AVMEDIA_TYPE_DATA:
1298  case AVMEDIA_TYPE_SUBTITLE:
1300  bit_rate = ctx->bit_rate;
1301  break;
1302  case AVMEDIA_TYPE_AUDIO:
1303  bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
1304  bit_rate = bits_per_sample ? ctx->sample_rate * ctx->channels * bits_per_sample : ctx->bit_rate;
1305  break;
1306  default:
1307  bit_rate = 0;
1308  break;
1309  }
1310  return bit_rate;
1311 }
1312 
1313 int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1314 {
1315  int ret = 0;
1316 
1318 
1319  ret = avcodec_open2(avctx, codec, options);
1320 
1321  ff_lock_avcodec(avctx, codec);
1322  return ret;
1323 }
1324 
1325 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
1326 {
1327  int ret = 0;
1328  AVDictionary *tmp = NULL;
1329 
1330  if (avcodec_is_open(avctx))
1331  return 0;
1332 
1333  if ((!codec && !avctx->codec)) {
1334  av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
1335  return AVERROR(EINVAL);
1336  }
1337  if ((codec && avctx->codec && codec != avctx->codec)) {
1338  av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
1339  "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
1340  return AVERROR(EINVAL);
1341  }
1342  if (!codec)
1343  codec = avctx->codec;
1344 
1345  if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
1346  return AVERROR(EINVAL);
1347 
1348  if (options)
1349  av_dict_copy(&tmp, *options, 0);
1350 
1351  ret = ff_lock_avcodec(avctx, codec);
1352  if (ret < 0)
1353  return ret;
1354 
1355  avctx->internal = av_mallocz(sizeof(AVCodecInternal));
1356  if (!avctx->internal) {
1357  ret = AVERROR(ENOMEM);
1358  goto end;
1359  }
1360 
1361  avctx->internal->pool = av_mallocz(sizeof(*avctx->internal->pool));
1362  if (!avctx->internal->pool) {
1363  ret = AVERROR(ENOMEM);
1364  goto free_and_end;
1365  }
1366 
1367  avctx->internal->to_free = av_frame_alloc();
1368  if (!avctx->internal->to_free) {
1369  ret = AVERROR(ENOMEM);
1370  goto free_and_end;
1371  }
1372 
1373  if (codec->priv_data_size > 0) {
1374  if (!avctx->priv_data) {
1375  avctx->priv_data = av_mallocz(codec->priv_data_size);
1376  if (!avctx->priv_data) {
1377  ret = AVERROR(ENOMEM);
1378  goto end;
1379  }
1380  if (codec->priv_class) {
1381  *(const AVClass **)avctx->priv_data = codec->priv_class;
1383  }
1384  }
1385  if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
1386  goto free_and_end;
1387  } else {
1388  avctx->priv_data = NULL;
1389  }
1390  if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
1391  goto free_and_end;
1392 
1393  if (avctx->codec_whitelist && av_match_list(codec->name, avctx->codec_whitelist, ',') <= 0) {
1394  av_log(avctx, AV_LOG_ERROR, "Codec (%s) not on whitelist\n", codec->name);
1395  ret = AVERROR(EINVAL);
1396  goto free_and_end;
1397  }
1398 
1399  // only call ff_set_dimensions() for non H.264/VP6F codecs so as not to overwrite previously setup dimensions
1400  if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
1401  (avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F))) {
1402  if (avctx->coded_width && avctx->coded_height)
1403  ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
1404  else if (avctx->width && avctx->height)
1405  ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
1406  if (ret < 0)
1407  goto free_and_end;
1408  }
1409 
1410  if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
1411  && ( av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx) < 0
1412  || av_image_check_size(avctx->width, avctx->height, 0, avctx) < 0)) {
1413  av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
1414  ff_set_dimensions(avctx, 0, 0);
1415  }
1416 
1417  if (avctx->width > 0 && avctx->height > 0) {
1418  if (av_image_check_sar(avctx->width, avctx->height,
1419  avctx->sample_aspect_ratio) < 0) {
1420  av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
1421  avctx->sample_aspect_ratio.num,
1422  avctx->sample_aspect_ratio.den);
1423  avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
1424  }
1425  }
1426 
1427  /* if the decoder init function was already called previously,
1428  * free the already allocated subtitle_header before overwriting it */
1429  if (av_codec_is_decoder(codec))
1430  av_freep(&avctx->subtitle_header);
1431 
1432  if (avctx->channels > FF_SANE_NB_CHANNELS) {
1433  ret = AVERROR(EINVAL);
1434  goto free_and_end;
1435  }
1436 
1437  avctx->codec = codec;
1438  if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
1439  avctx->codec_id == AV_CODEC_ID_NONE) {
1440  avctx->codec_type = codec->type;
1441  avctx->codec_id = codec->id;
1442  }
1443  if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
1444  && avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
1445  av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
1446  ret = AVERROR(EINVAL);
1447  goto free_and_end;
1448  }
1449  avctx->frame_number = 0;
1451 
1452  if (avctx->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
1454  const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
1455  AVCodec *codec2;
1456  av_log(avctx, AV_LOG_ERROR,
1457  "The %s '%s' is experimental but experimental codecs are not enabled, "
1458  "add '-strict %d' if you want to use it.\n",
1459  codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
1460  codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
1461  if (!(codec2->capabilities & CODEC_CAP_EXPERIMENTAL))
1462  av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
1463  codec_string, codec2->name);
1464  ret = AVERROR_EXPERIMENTAL;
1465  goto free_and_end;
1466  }
1467 
1468  if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
1469  (!avctx->time_base.num || !avctx->time_base.den)) {
1470  avctx->time_base.num = 1;
1471  avctx->time_base.den = avctx->sample_rate;
1472  }
1473 
1474  if (!HAVE_THREADS)
1475  av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
1476 
1477  if (CONFIG_FRAME_THREAD_ENCODER) {
1478  ff_unlock_avcodec(); //we will instanciate a few encoders thus kick the counter to prevent false detection of a problem
1479  ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
1480  ff_lock_avcodec(avctx, codec);
1481  if (ret < 0)
1482  goto free_and_end;
1483  }
1484 
1485  if (HAVE_THREADS
1487  ret = ff_thread_init(avctx);
1488  if (ret < 0) {
1489  goto free_and_end;
1490  }
1491  }
1492  if (!HAVE_THREADS && !(codec->capabilities & CODEC_CAP_AUTO_THREADS))
1493  avctx->thread_count = 1;
1494 
1495  if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
1496  av_log(avctx, AV_LOG_ERROR, "The maximum value for lowres supported by the decoder is %d\n",
1497  avctx->codec->max_lowres);
1498  ret = AVERROR(EINVAL);
1499  goto free_and_end;
1500  }
1501 
1502 #if FF_API_VISMV
1503  if (avctx->debug_mv)
1504  av_log(avctx, AV_LOG_WARNING, "The 'vismv' option is deprecated, "
1505  "see the codecview filter instead.\n");
1506 #endif
1507 
1508  if (av_codec_is_encoder(avctx->codec)) {
1509  int i;
1510  if (avctx->codec->sample_fmts) {
1511  for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
1512  if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
1513  break;
1514  if (avctx->channels == 1 &&
1517  avctx->sample_fmt = avctx->codec->sample_fmts[i];
1518  break;
1519  }
1520  }
1521  if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
1522  char buf[128];
1523  snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt);
1524  av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n",
1525  (char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf));
1526  ret = AVERROR(EINVAL);
1527  goto free_and_end;
1528  }
1529  }
1530  if (avctx->codec->pix_fmts) {
1531  for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
1532  if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
1533  break;
1534  if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE
1535  && !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG)
1537  char buf[128];
1538  snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt);
1539  av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n",
1540  (char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf));
1541  ret = AVERROR(EINVAL);
1542  goto free_and_end;
1543  }
1544  if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ420P ||
1545  avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ411P ||
1546  avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ422P ||
1547  avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ440P ||
1548  avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ444P)
1549  avctx->color_range = AVCOL_RANGE_JPEG;
1550  }
1551  if (avctx->codec->supported_samplerates) {
1552  for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
1553  if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
1554  break;
1555  if (avctx->codec->supported_samplerates[i] == 0) {
1556  av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
1557  avctx->sample_rate);
1558  ret = AVERROR(EINVAL);
1559  goto free_and_end;
1560  }
1561  }
1562  if (avctx->codec->channel_layouts) {
1563  if (!avctx->channel_layout) {
1564  av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n");
1565  } else {
1566  for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
1567  if (avctx->channel_layout == avctx->codec->channel_layouts[i])
1568  break;
1569  if (avctx->codec->channel_layouts[i] == 0) {
1570  char buf[512];
1571  av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1572  av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf);
1573  ret = AVERROR(EINVAL);
1574  goto free_and_end;
1575  }
1576  }
1577  }
1578  if (avctx->channel_layout && avctx->channels) {
1579  int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1580  if (channels != avctx->channels) {
1581  char buf[512];
1582  av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1583  av_log(avctx, AV_LOG_ERROR,
1584  "Channel layout '%s' with %d channels does not match number of specified channels %d\n",
1585  buf, channels, avctx->channels);
1586  ret = AVERROR(EINVAL);
1587  goto free_and_end;
1588  }
1589  } else if (avctx->channel_layout) {
1591  }
1592  if(avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1593  if (avctx->width <= 0 || avctx->height <= 0) {
1594  av_log(avctx, AV_LOG_ERROR, "dimensions not set\n");
1595  ret = AVERROR(EINVAL);
1596  goto free_and_end;
1597  }
1598  }
1599  if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
1600  && avctx->bit_rate>0 && avctx->bit_rate<1000) {
1601  av_log(avctx, AV_LOG_WARNING, "Bitrate %d is extremely low, maybe you mean %dk\n", avctx->bit_rate, avctx->bit_rate);
1602  }
1603 
1604  if (!avctx->rc_initial_buffer_occupancy)
1605  avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
1606  }
1607 
1609  avctx->pts_correction_num_faulty_dts = 0;
1610  avctx->pts_correction_last_pts =
1611  avctx->pts_correction_last_dts = INT64_MIN;
1612 
1613  if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
1614  || avctx->internal->frame_thread_encoder)) {
1615  ret = avctx->codec->init(avctx);
1616  if (ret < 0) {
1617  goto free_and_end;
1618  }
1619  }
1620 
1621  ret=0;
1622 
1623 #if FF_API_AUDIOENC_DELAY
1624  if (av_codec_is_encoder(avctx->codec))
1625  avctx->delay = avctx->initial_padding;
1626 #endif
1627 
1628  if (av_codec_is_decoder(avctx->codec)) {
1629  if (!avctx->bit_rate)
1630  avctx->bit_rate = get_bit_rate(avctx);
1631  /* validate channel layout from the decoder */
1632  if (avctx->channel_layout) {
1633  int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
1634  if (!avctx->channels)
1635  avctx->channels = channels;
1636  else if (channels != avctx->channels) {
1637  char buf[512];
1638  av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
1639  av_log(avctx, AV_LOG_WARNING,
1640  "Channel layout '%s' with %d channels does not match specified number of channels %d: "
1641  "ignoring specified channel layout\n",
1642  buf, channels, avctx->channels);
1643  avctx->channel_layout = 0;
1644  }
1645  }
1646  if (avctx->channels && avctx->channels < 0 ||
1647  avctx->channels > FF_SANE_NB_CHANNELS) {
1648  ret = AVERROR(EINVAL);
1649  goto free_and_end;
1650  }
1651  if (avctx->sub_charenc) {
1652  if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
1653  av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
1654  "supported with subtitles codecs\n");
1655  ret = AVERROR(EINVAL);
1656  goto free_and_end;
1657  } else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
1658  av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
1659  "subtitles character encoding will be ignored\n",
1660  avctx->codec_descriptor->name);
1662  } else {
1663  /* input character encoding is set for a text based subtitle
1664  * codec at this point */
1667 
1669 #if CONFIG_ICONV
1670  iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
1671  if (cd == (iconv_t)-1) {
1672  ret = AVERROR(errno);
1673  av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
1674  "with input character encoding \"%s\"\n", avctx->sub_charenc);
1675  goto free_and_end;
1676  }
1677  iconv_close(cd);
1678 #else
1679  av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
1680  "conversion needs a libavcodec built with iconv support "
1681  "for this codec\n");
1682  ret = AVERROR(ENOSYS);
1683  goto free_and_end;
1684 #endif
1685  }
1686  }
1687  }
1688 
1689 #if FF_API_AVCTX_TIMEBASE
1690  if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
1691  avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
1692 #endif
1693  }
1694  if (codec->priv_data_size > 0 && avctx->priv_data && codec->priv_class) {
1695  av_assert0(*(const AVClass **)avctx->priv_data == codec->priv_class);
1696  }
1697 
1698 end:
1700  if (options) {
1702  *options = tmp;
1703  }
1704 
1705  return ret;
1706 free_and_end:
1707  if (avctx->codec &&
1708  (avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP))
1709  avctx->codec->close(avctx);
1710 
1711  av_dict_free(&tmp);
1712  if (codec->priv_class && codec->priv_data_size)
1713  av_opt_free(avctx->priv_data);
1714  av_freep(&avctx->priv_data);
1715  if (avctx->internal) {
1716  av_frame_free(&avctx->internal->to_free);
1717  av_freep(&avctx->internal->pool);
1718  }
1719  av_freep(&avctx->internal);
1720  avctx->codec = NULL;
1721  goto end;
1722 }
1723 
1724 int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size)
1725 {
1726  if (avpkt->size < 0) {
1727  av_log(avctx, AV_LOG_ERROR, "Invalid negative user packet size %d\n", avpkt->size);
1728  return AVERROR(EINVAL);
1729  }
1731  av_log(avctx, AV_LOG_ERROR, "Invalid minimum required packet size %"PRId64" (max allowed is %d)\n",
1732  size, INT_MAX - FF_INPUT_BUFFER_PADDING_SIZE);
1733  return AVERROR(EINVAL);
1734  }
1735 
1736  if (avctx) {
1737  av_assert0(!avpkt->data || avpkt->data != avctx->internal->byte_buffer);
1738  if (!avpkt->data || avpkt->size < size) {
1740  avpkt->data = avctx->internal->byte_buffer;
1741  avpkt->size = avctx->internal->byte_buffer_size;
1742 #if FF_API_DESTRUCT_PACKET
1744  avpkt->destruct = NULL;
1746 #endif
1747  }
1748  }
1749 
1750  if (avpkt->data) {
1751  AVBufferRef *buf = avpkt->buf;
1752 #if FF_API_DESTRUCT_PACKET
1754  void *destruct = avpkt->destruct;
1756 #endif
1757 
1758  if (avpkt->size < size) {
1759  av_log(avctx, AV_LOG_ERROR, "User packet is too small (%d < %"PRId64")\n", avpkt->size, size);
1760  return AVERROR(EINVAL);
1761  }
1762 
1763  av_init_packet(avpkt);
1764 #if FF_API_DESTRUCT_PACKET
1766  avpkt->destruct = destruct;
1768 #endif
1769  avpkt->buf = buf;
1770  avpkt->size = size;
1771  return 0;
1772  } else {
1773  int ret = av_new_packet(avpkt, size);
1774  if (ret < 0)
1775  av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %"PRId64"\n", size);
1776  return ret;
1777  }
1778 }
1779 
1781 {
1782  return ff_alloc_packet2(NULL, avpkt, size);
1783 }
1784 
1785 /**
1786  * Pad last frame with silence.
1787  */
1788 static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src)
1789 {
1790  AVFrame *frame = NULL;
1791  int ret;
1792 
1793  if (!(frame = av_frame_alloc()))
1794  return AVERROR(ENOMEM);
1795 
1796  frame->format = src->format;
1797  frame->channel_layout = src->channel_layout;
1799  frame->nb_samples = s->frame_size;
1800  ret = av_frame_get_buffer(frame, 32);
1801  if (ret < 0)
1802  goto fail;
1803 
1804  ret = av_frame_copy_props(frame, src);
1805  if (ret < 0)
1806  goto fail;
1807 
1808  if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0,
1809  src->nb_samples, s->channels, s->sample_fmt)) < 0)
1810  goto fail;
1811  if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples,
1812  frame->nb_samples - src->nb_samples,
1813  s->channels, s->sample_fmt)) < 0)
1814  goto fail;
1815 
1816  *dst = frame;
1817 
1818  return 0;
1819 
1820 fail:
1821  av_frame_free(&frame);
1822  return ret;
1823 }
1824 
1825 int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx,
1826  AVPacket *avpkt,
1827  const AVFrame *frame,
1828  int *got_packet_ptr)
1829 {
1830  AVFrame *extended_frame = NULL;
1831  AVFrame *padded_frame = NULL;
1832  int ret;
1833  AVPacket user_pkt = *avpkt;
1834  int needs_realloc = !user_pkt.data;
1835 
1836  *got_packet_ptr = 0;
1837 
1838  if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
1839  av_free_packet(avpkt);
1840  av_init_packet(avpkt);
1841  return 0;
1842  }
1843 
1844  /* ensure that extended_data is properly set */
1845  if (frame && !frame->extended_data) {
1846  if (av_sample_fmt_is_planar(avctx->sample_fmt) &&
1847  avctx->channels > AV_NUM_DATA_POINTERS) {
1848  av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, "
1849  "with more than %d channels, but extended_data is not set.\n",
1851  return AVERROR(EINVAL);
1852  }
1853  av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n");
1854 
1855  extended_frame = av_frame_alloc();
1856  if (!extended_frame)
1857  return AVERROR(ENOMEM);
1858 
1859  memcpy(extended_frame, frame, sizeof(AVFrame));
1860  extended_frame->extended_data = extended_frame->data;
1861  frame = extended_frame;
1862  }
1863 
1864  /* extract audio service type metadata */
1865  if (frame) {
1867  if (sd && sd->size >= sizeof(enum AVAudioServiceType))
1868  avctx->audio_service_type = *(enum AVAudioServiceType*)sd->data;
1869  }
1870 
1871  /* check for valid frame size */
1872  if (frame) {
1874  if (frame->nb_samples > avctx->frame_size) {
1875  av_log(avctx, AV_LOG_ERROR, "more samples than frame size (avcodec_encode_audio2)\n");
1876  ret = AVERROR(EINVAL);
1877  goto end;
1878  }
1879  } else if (!(avctx->codec->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE)) {
1880  if (frame->nb_samples < avctx->frame_size &&
1881  !avctx->internal->last_audio_frame) {
1882  ret = pad_last_frame(avctx, &padded_frame, frame);
1883  if (ret < 0)
1884  goto end;
1885 
1886  frame = padded_frame;
1887  avctx->internal->last_audio_frame = 1;
1888  }
1889 
1890  if (frame->nb_samples != avctx->frame_size) {
1891  av_log(avctx, AV_LOG_ERROR, "nb_samples (%d) != frame_size (%d) (avcodec_encode_audio2)\n", frame->nb_samples, avctx->frame_size);
1892  ret = AVERROR(EINVAL);
1893  goto end;
1894  }
1895  }
1896  }
1897 
1898  ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
1899  if (!ret) {
1900  if (*got_packet_ptr) {
1901  if (!(avctx->codec->capabilities & CODEC_CAP_DELAY)) {
1902  if (avpkt->pts == AV_NOPTS_VALUE)
1903  avpkt->pts = frame->pts;
1904  if (!avpkt->duration)
1905  avpkt->duration = ff_samples_to_time_base(avctx,
1906  frame->nb_samples);
1907  }
1908  avpkt->dts = avpkt->pts;
1909  } else {
1910  avpkt->size = 0;
1911  }
1912  }
1913  if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
1914  needs_realloc = 0;
1915  if (user_pkt.data) {
1916  if (user_pkt.size >= avpkt->size) {
1917  memcpy(user_pkt.data, avpkt->data, avpkt->size);
1918  } else {
1919  av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
1920  avpkt->size = user_pkt.size;
1921  ret = -1;
1922  }
1923  avpkt->buf = user_pkt.buf;
1924  avpkt->data = user_pkt.data;
1925 #if FF_API_DESTRUCT_PACKET
1927  avpkt->destruct = user_pkt.destruct;
1929 #endif
1930  } else {
1931  if (av_dup_packet(avpkt) < 0) {
1932  ret = AVERROR(ENOMEM);
1933  }
1934  }
1935  }
1936 
1937  if (!ret) {
1938  if (needs_realloc && avpkt->data) {
1939  ret = av_buffer_realloc(&avpkt->buf, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
1940  if (ret >= 0)
1941  avpkt->data = avpkt->buf->data;
1942  }
1943 
1944  avctx->frame_number++;
1945  }
1946 
1947  if (ret < 0 || !*got_packet_ptr) {
1948  av_free_packet(avpkt);
1949  av_init_packet(avpkt);
1950  goto end;
1951  }
1952 
1953  /* NOTE: if we add any audio encoders which output non-keyframe packets,
1954  * this needs to be moved to the encoders, but for now we can do it
1955  * here to simplify things */
1956  avpkt->flags |= AV_PKT_FLAG_KEY;
1957 
1958 end:
1959  av_frame_free(&padded_frame);
1960  av_free(extended_frame);
1961 
1962 #if FF_API_AUDIOENC_DELAY
1963  avctx->delay = avctx->initial_padding;
1964 #endif
1965 
1966  return ret;
1967 }
1968 
1969 #if FF_API_OLD_ENCODE_AUDIO
1970 int attribute_align_arg avcodec_encode_audio(AVCodecContext *avctx,
1971  uint8_t *buf, int buf_size,
1972  const short *samples)
1973 {
1974  AVPacket pkt;
1975  AVFrame *frame;
1976  int ret, samples_size, got_packet;
1977 
1978  av_init_packet(&pkt);
1979  pkt.data = buf;
1980  pkt.size = buf_size;
1981 
1982  if (samples) {
1983  frame = av_frame_alloc();
1984  if (!frame)
1985  return AVERROR(ENOMEM);
1986 
1987  if (avctx->frame_size) {
1988  frame->nb_samples = avctx->frame_size;
1989  } else {
1990  /* if frame_size is not set, the number of samples must be
1991  * calculated from the buffer size */
1992  int64_t nb_samples;
1993  if (!av_get_bits_per_sample(avctx->codec_id)) {
1994  av_log(avctx, AV_LOG_ERROR, "avcodec_encode_audio() does not "
1995  "support this codec\n");
1996  av_frame_free(&frame);
1997  return AVERROR(EINVAL);
1998  }
1999  nb_samples = (int64_t)buf_size * 8 /
2000  (av_get_bits_per_sample(avctx->codec_id) *
2001  avctx->channels);
2002  if (nb_samples >= INT_MAX) {
2003  av_frame_free(&frame);
2004  return AVERROR(EINVAL);
2005  }
2006  frame->nb_samples = nb_samples;
2007  }
2008 
2009  /* it is assumed that the samples buffer is large enough based on the
2010  * relevant parameters */
2011  samples_size = av_samples_get_buffer_size(NULL, avctx->channels,
2012  frame->nb_samples,
2013  avctx->sample_fmt, 1);
2014  if ((ret = avcodec_fill_audio_frame(frame, avctx->channels,
2015  avctx->sample_fmt,
2016  (const uint8_t *)samples,
2017  samples_size, 1)) < 0) {
2018  av_frame_free(&frame);
2019  return ret;
2020  }
2021 
2022  /* fabricate frame pts from sample count.
2023  * this is needed because the avcodec_encode_audio() API does not have
2024  * a way for the user to provide pts */
2025  if (avctx->sample_rate && avctx->time_base.num)
2026  frame->pts = ff_samples_to_time_base(avctx,
2027  avctx->internal->sample_count);
2028  else
2029  frame->pts = AV_NOPTS_VALUE;
2030  avctx->internal->sample_count += frame->nb_samples;
2031  } else {
2032  frame = NULL;
2033  }
2034 
2035  got_packet = 0;
2036  ret = avcodec_encode_audio2(avctx, &pkt, frame, &got_packet);
2037  if (!ret && got_packet && avctx->coded_frame) {
2038  avctx->coded_frame->pts = pkt.pts;
2039  avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
2040  }
2041  /* free any side data since we cannot return it */
2043 
2044  if (frame && frame->extended_data != frame->data)
2045  av_freep(&frame->extended_data);
2046 
2047  av_frame_free(&frame);
2048  return ret ? ret : pkt.size;
2049 }
2050 
2051 #endif
2052 
2053 #if FF_API_OLD_ENCODE_VIDEO
2054 int attribute_align_arg avcodec_encode_video(AVCodecContext *avctx, uint8_t *buf, int buf_size,
2055  const AVFrame *pict)
2056 {
2057  AVPacket pkt;
2058  int ret, got_packet = 0;
2059 
2060  if (buf_size < FF_MIN_BUFFER_SIZE) {
2061  av_log(avctx, AV_LOG_ERROR, "buffer smaller than minimum size\n");
2062  return -1;
2063  }
2064 
2065  av_init_packet(&pkt);
2066  pkt.data = buf;
2067  pkt.size = buf_size;
2068 
2069  ret = avcodec_encode_video2(avctx, &pkt, pict, &got_packet);
2070  if (!ret && got_packet && avctx->coded_frame) {
2071  avctx->coded_frame->pts = pkt.pts;
2072  avctx->coded_frame->key_frame = !!(pkt.flags & AV_PKT_FLAG_KEY);
2073  }
2074 
2075  /* free any side data since we cannot return it */
2076  if (pkt.side_data_elems > 0) {
2077  int i;
2078  for (i = 0; i < pkt.side_data_elems; i++)
2079  av_free(pkt.side_data[i].data);
2080  av_freep(&pkt.side_data);
2081  pkt.side_data_elems = 0;
2082  }
2083 
2084  return ret ? ret : pkt.size;
2085 }
2086 
2087 #endif
2088 
2089 int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx,
2090  AVPacket *avpkt,
2091  const AVFrame *frame,
2092  int *got_packet_ptr)
2093 {
2094  int ret;
2095  AVPacket user_pkt = *avpkt;
2096  int needs_realloc = !user_pkt.data;
2097 
2098  *got_packet_ptr = 0;
2099 
2100  if(CONFIG_FRAME_THREAD_ENCODER &&
2102  return ff_thread_video_encode_frame(avctx, avpkt, frame, got_packet_ptr);
2103 
2104  if ((avctx->flags&CODEC_FLAG_PASS1) && avctx->stats_out)
2105  avctx->stats_out[0] = '\0';
2106 
2107  if (!(avctx->codec->capabilities & CODEC_CAP_DELAY) && !frame) {
2108  av_free_packet(avpkt);
2109  av_init_packet(avpkt);
2110  avpkt->size = 0;
2111  return 0;
2112  }
2113 
2114  if (av_image_check_size(avctx->width, avctx->height, 0, avctx))
2115  return AVERROR(EINVAL);
2116 
2117  if (frame && frame->format == AV_PIX_FMT_NONE)
2118  av_log(avctx, AV_LOG_WARNING, "AVFrame.format is not set\n");
2119  if (frame && (frame->width == 0 || frame->height == 0))
2120  av_log(avctx, AV_LOG_WARNING, "AVFrame.width or height is not set\n");
2121 
2122  av_assert0(avctx->codec->encode2);
2123 
2124  ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr);
2125  av_assert0(ret <= 0);
2126 
2127  if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) {
2128  needs_realloc = 0;
2129  if (user_pkt.data) {
2130  if (user_pkt.size >= avpkt->size) {
2131  memcpy(user_pkt.data, avpkt->data, avpkt->size);
2132  } else {
2133  av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size);
2134  avpkt->size = user_pkt.size;
2135  ret = -1;
2136  }
2137  avpkt->buf = user_pkt.buf;
2138  avpkt->data = user_pkt.data;
2139 #if FF_API_DESTRUCT_PACKET
2141  avpkt->destruct = user_pkt.destruct;
2143 #endif
2144  } else {
2145  if (av_dup_packet(avpkt) < 0) {
2146  ret = AVERROR(ENOMEM);
2147  }
2148  }
2149  }
2150 
2151  if (!ret) {
2152  if (!*got_packet_ptr)
2153  avpkt->size = 0;
2154  else if (!(avctx->codec->capabilities & CODEC_CAP_DELAY))
2155  avpkt->pts = avpkt->dts = frame->pts;
2156 
2157  if (needs_realloc && avpkt->data) {
2158  ret = av_buffer_realloc(&avpkt->buf, avpkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
2159  if (ret >= 0)
2160  avpkt->data = avpkt->buf->data;
2161  }
2162 
2163  avctx->frame_number++;
2164  }
2165 
2166  if (ret < 0 || !*got_packet_ptr)
2167  av_free_packet(avpkt);
2168  else
2170 
2171  emms_c();
2172  return ret;
2173 }
2174 
2176  const AVSubtitle *sub)
2177 {
2178  int ret;
2179  if (sub->start_display_time) {
2180  av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
2181  return -1;
2182  }
2183 
2184  ret = avctx->codec->encode_sub(avctx, buf, buf_size, sub);
2185  avctx->frame_number++;
2186  return ret;
2187 }
2188 
2189 /**
2190  * Attempt to guess proper monotonic timestamps for decoded video frames
2191  * which might have incorrect times. Input timestamps may wrap around, in
2192  * which case the output will as well.
2193  *
2194  * @param pts the pts field of the decoded AVPacket, as passed through
2195  * AVFrame.pkt_pts
2196  * @param dts the dts field of the decoded AVPacket
2197  * @return one of the input values, may be AV_NOPTS_VALUE
2198  */
2199 static int64_t guess_correct_pts(AVCodecContext *ctx,
2200  int64_t reordered_pts, int64_t dts)
2201 {
2202  int64_t pts = AV_NOPTS_VALUE;
2203 
2204  if (dts != AV_NOPTS_VALUE) {
2206  ctx->pts_correction_last_dts = dts;
2207  } else if (reordered_pts != AV_NOPTS_VALUE)
2208  ctx->pts_correction_last_dts = reordered_pts;
2209 
2210  if (reordered_pts != AV_NOPTS_VALUE) {
2211  ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
2212  ctx->pts_correction_last_pts = reordered_pts;
2213  } else if(dts != AV_NOPTS_VALUE)
2214  ctx->pts_correction_last_pts = dts;
2215 
2217  && reordered_pts != AV_NOPTS_VALUE)
2218  pts = reordered_pts;
2219  else
2220  pts = dts;
2221 
2222  return pts;
2223 }
2224 
2225 static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt)
2226 {
2227  int size = 0, ret;
2228  const uint8_t *data;
2229  uint32_t flags;
2230 
2231  data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size);
2232  if (!data)
2233  return 0;
2234 
2235  if (!(avctx->codec->capabilities & CODEC_CAP_PARAM_CHANGE)) {
2236  av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
2237  "changes, but PARAM_CHANGE side data was sent to it.\n");
2238  return AVERROR(EINVAL);
2239  }
2240 
2241  if (size < 4)
2242  goto fail;
2243 
2244  flags = bytestream_get_le32(&data);
2245  size -= 4;
2246 
2248  if (size < 4)
2249  goto fail;
2250  avctx->channels = bytestream_get_le32(&data);
2251  size -= 4;
2252  }
2254  if (size < 8)
2255  goto fail;
2256  avctx->channel_layout = bytestream_get_le64(&data);
2257  size -= 8;
2258  }
2260  if (size < 4)
2261  goto fail;
2262  avctx->sample_rate = bytestream_get_le32(&data);
2263  size -= 4;
2264  }
2266  if (size < 8)
2267  goto fail;
2268  avctx->width = bytestream_get_le32(&data);
2269  avctx->height = bytestream_get_le32(&data);
2270  size -= 8;
2271  ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
2272  if (ret < 0)
2273  return ret;
2274  }
2275 
2276  return 0;
2277 fail:
2278  av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
2279  return AVERROR_INVALIDDATA;
2280 }
2281 
2283 {
2284  int size;
2285  const uint8_t *side_metadata;
2286 
2287  AVDictionary **frame_md = avpriv_frame_get_metadatap(frame);
2288 
2289  side_metadata = av_packet_get_side_data(avctx->internal->pkt,
2291  return av_packet_unpack_dictionary(side_metadata, size, frame_md);
2292 }
2293 
2294 static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
2295 {
2296  int ret;
2297 
2298  /* move the original frame to our backup */
2299  av_frame_unref(avci->to_free);
2300  av_frame_move_ref(avci->to_free, frame);
2301 
2302  /* now copy everything except the AVBufferRefs back
2303  * note that we make a COPY of the side data, so calling av_frame_free() on
2304  * the caller's frame will work properly */
2305  ret = av_frame_copy_props(frame, avci->to_free);
2306  if (ret < 0)
2307  return ret;
2308 
2309  memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
2310  memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
2311  if (avci->to_free->extended_data != avci->to_free->data) {
2312  int planes = av_frame_get_channels(avci->to_free);
2313  int size = planes * sizeof(*frame->extended_data);
2314 
2315  if (!size) {
2316  av_frame_unref(frame);
2317  return AVERROR_BUG;
2318  }
2319 
2320  frame->extended_data = av_malloc(size);
2321  if (!frame->extended_data) {
2322  av_frame_unref(frame);
2323  return AVERROR(ENOMEM);
2324  }
2325  memcpy(frame->extended_data, avci->to_free->extended_data,
2326  size);
2327  } else
2328  frame->extended_data = frame->data;
2329 
2330  frame->format = avci->to_free->format;
2331  frame->width = avci->to_free->width;
2332  frame->height = avci->to_free->height;
2333  frame->channel_layout = avci->to_free->channel_layout;
2334  frame->nb_samples = avci->to_free->nb_samples;
2336 
2337  return 0;
2338 }
2339 
2340 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
2341  int *got_picture_ptr,
2342  const AVPacket *avpkt)
2343 {
2344  AVCodecInternal *avci = avctx->internal;
2345  int ret;
2346  // copy to ensure we do not change avpkt
2347  AVPacket tmp = *avpkt;
2348 
2349  if (!avctx->codec)
2350  return AVERROR(EINVAL);
2351  if (avctx->codec->type != AVMEDIA_TYPE_VIDEO) {
2352  av_log(avctx, AV_LOG_ERROR, "Invalid media type for video\n");
2353  return AVERROR(EINVAL);
2354  }
2355 
2356  *got_picture_ptr = 0;
2357  if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
2358  return AVERROR(EINVAL);
2359 
2360  av_frame_unref(picture);
2361 
2362  if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
2363  int did_split = av_packet_split_side_data(&tmp);
2364  ret = apply_param_change(avctx, &tmp);
2365  if (ret < 0) {
2366  av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
2367  if (avctx->err_recognition & AV_EF_EXPLODE)
2368  goto fail;
2369  }
2370 
2371  avctx->internal->pkt = &tmp;
2372  if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2373  ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr,
2374  &tmp);
2375  else {
2376  ret = avctx->codec->decode(avctx, picture, got_picture_ptr,
2377  &tmp);
2378  picture->pkt_dts = avpkt->dts;
2379 
2380  if(!avctx->has_b_frames){
2381  av_frame_set_pkt_pos(picture, avpkt->pos);
2382  }
2383  //FIXME these should be under if(!avctx->has_b_frames)
2384  /* get_buffer is supposed to set frame parameters */
2385  if (!(avctx->codec->capabilities & CODEC_CAP_DR1)) {
2386  if (!picture->sample_aspect_ratio.num) picture->sample_aspect_ratio = avctx->sample_aspect_ratio;
2387  if (!picture->width) picture->width = avctx->width;
2388  if (!picture->height) picture->height = avctx->height;
2389  if (picture->format == AV_PIX_FMT_NONE) picture->format = avctx->pix_fmt;
2390  }
2391  }
2392  add_metadata_from_side_data(avctx, picture);
2393 
2394 fail:
2395  emms_c(); //needed to avoid an emms_c() call before every return;
2396 
2397  avctx->internal->pkt = NULL;
2398  if (did_split) {
2400  if(ret == tmp.size)
2401  ret = avpkt->size;
2402  }
2403 
2404  if (*got_picture_ptr) {
2405  if (!avctx->refcounted_frames) {
2406  int err = unrefcount_frame(avci, picture);
2407  if (err < 0)
2408  return err;
2409  }
2410 
2411  avctx->frame_number++;
2413  guess_correct_pts(avctx,
2414  picture->pkt_pts,
2415  picture->pkt_dts));
2416  } else
2417  av_frame_unref(picture);
2418  } else
2419  ret = 0;
2420 
2421  /* many decoders assign whole AVFrames, thus overwriting extended_data;
2422  * make sure it's set correctly */
2423  av_assert0(!picture->extended_data || picture->extended_data == picture->data);
2424 
2425 #if FF_API_AVCTX_TIMEBASE
2426  if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
2427  avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
2428 #endif
2429 
2430  return ret;
2431 }
2432 
2433 #if FF_API_OLD_DECODE_AUDIO
2434 int attribute_align_arg avcodec_decode_audio3(AVCodecContext *avctx, int16_t *samples,
2435  int *frame_size_ptr,
2436  AVPacket *avpkt)
2437 {
2438  AVFrame *frame = av_frame_alloc();
2439  int ret, got_frame = 0;
2440 
2441  if (!frame)
2442  return AVERROR(ENOMEM);
2443  if (avctx->get_buffer != avcodec_default_get_buffer) {
2444  av_log(avctx, AV_LOG_ERROR, "Custom get_buffer() for use with"
2445  "avcodec_decode_audio3() detected. Overriding with avcodec_default_get_buffer\n");
2446  av_log(avctx, AV_LOG_ERROR, "Please port your application to "
2447  "avcodec_decode_audio4()\n");
2450  }
2451 
2452  ret = avcodec_decode_audio4(avctx, frame, &got_frame, avpkt);
2453 
2454  if (ret >= 0 && got_frame) {
2455  int ch, plane_size;
2456  int planar = av_sample_fmt_is_planar(avctx->sample_fmt);
2457  int data_size = av_samples_get_buffer_size(&plane_size, avctx->channels,
2458  frame->nb_samples,
2459  avctx->sample_fmt, 1);
2460  if (*frame_size_ptr < data_size) {
2461  av_log(avctx, AV_LOG_ERROR, "output buffer size is too small for "
2462  "the current frame (%d < %d)\n", *frame_size_ptr, data_size);
2463  av_frame_free(&frame);
2464  return AVERROR(EINVAL);
2465  }
2466 
2467  memcpy(samples, frame->extended_data[0], plane_size);
2468 
2469  if (planar && avctx->channels > 1) {
2470  uint8_t *out = ((uint8_t *)samples) + plane_size;
2471  for (ch = 1; ch < avctx->channels; ch++) {
2472  memcpy(out, frame->extended_data[ch], plane_size);
2473  out += plane_size;
2474  }
2475  }
2476  *frame_size_ptr = data_size;
2477  } else {
2478  *frame_size_ptr = 0;
2479  }
2480  av_frame_free(&frame);
2481  return ret;
2482 }
2483 
2484 #endif
2485 
2486 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
2487  AVFrame *frame,
2488  int *got_frame_ptr,
2489  const AVPacket *avpkt)
2490 {
2491  AVCodecInternal *avci = avctx->internal;
2492  int ret = 0;
2493 
2494  *got_frame_ptr = 0;
2495 
2496  if (!avpkt->data && avpkt->size) {
2497  av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2498  return AVERROR(EINVAL);
2499  }
2500  if (!avctx->codec)
2501  return AVERROR(EINVAL);
2502  if (avctx->codec->type != AVMEDIA_TYPE_AUDIO) {
2503  av_log(avctx, AV_LOG_ERROR, "Invalid media type for audio\n");
2504  return AVERROR(EINVAL);
2505  }
2506 
2507  av_frame_unref(frame);
2508 
2509  if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size || (avctx->active_thread_type & FF_THREAD_FRAME)) {
2510  uint8_t *side;
2511  int side_size;
2512  uint32_t discard_padding = 0;
2513  uint8_t skip_reason = 0;
2514  uint8_t discard_reason = 0;
2515  // copy to ensure we do not change avpkt
2516  AVPacket tmp = *avpkt;
2517  int did_split = av_packet_split_side_data(&tmp);
2518  ret = apply_param_change(avctx, &tmp);
2519  if (ret < 0) {
2520  av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
2521  if (avctx->err_recognition & AV_EF_EXPLODE)
2522  goto fail;
2523  }
2524 
2525  avctx->internal->pkt = &tmp;
2526  if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
2527  ret = ff_thread_decode_frame(avctx, frame, got_frame_ptr, &tmp);
2528  else {
2529  ret = avctx->codec->decode(avctx, frame, got_frame_ptr, &tmp);
2530  frame->pkt_dts = avpkt->dts;
2531  }
2532  if (ret >= 0 && *got_frame_ptr) {
2533  add_metadata_from_side_data(avctx, frame);
2534  avctx->frame_number++;
2536  guess_correct_pts(avctx,
2537  frame->pkt_pts,
2538  frame->pkt_dts));
2539  if (frame->format == AV_SAMPLE_FMT_NONE)
2540  frame->format = avctx->sample_fmt;
2541  if (!frame->channel_layout)
2542  frame->channel_layout = avctx->channel_layout;
2543  if (!av_frame_get_channels(frame))
2544  av_frame_set_channels(frame, avctx->channels);
2545  if (!frame->sample_rate)
2546  frame->sample_rate = avctx->sample_rate;
2547  }
2548 
2549  side= av_packet_get_side_data(avctx->internal->pkt, AV_PKT_DATA_SKIP_SAMPLES, &side_size);
2550  if(side && side_size>=10) {
2551  avctx->internal->skip_samples = AV_RL32(side);
2552  av_log(avctx, AV_LOG_DEBUG, "skip %d samples due to side data\n",
2553  avctx->internal->skip_samples);
2554  discard_padding = AV_RL32(side + 4);
2555  skip_reason = AV_RL8(side + 8);
2556  discard_reason = AV_RL8(side + 9);
2557  }
2558  if (avctx->internal->skip_samples && *got_frame_ptr &&
2559  !(avctx->flags2 & CODEC_FLAG2_SKIP_MANUAL)) {
2560  if(frame->nb_samples <= avctx->internal->skip_samples){
2561  *got_frame_ptr = 0;
2562  avctx->internal->skip_samples -= frame->nb_samples;
2563  av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
2564  avctx->internal->skip_samples);
2565  } else {
2567  frame->nb_samples - avctx->internal->skip_samples, avctx->channels, frame->format);
2568  if(avctx->pkt_timebase.num && avctx->sample_rate) {
2569  int64_t diff_ts = av_rescale_q(avctx->internal->skip_samples,
2570  (AVRational){1, avctx->sample_rate},
2571  avctx->pkt_timebase);
2572  if(frame->pkt_pts!=AV_NOPTS_VALUE)
2573  frame->pkt_pts += diff_ts;
2574  if(frame->pkt_dts!=AV_NOPTS_VALUE)
2575  frame->pkt_dts += diff_ts;
2576  if (av_frame_get_pkt_duration(frame) >= diff_ts)
2577  av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2578  } else {
2579  av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
2580  }
2581  av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
2582  avctx->internal->skip_samples, frame->nb_samples);
2583  frame->nb_samples -= avctx->internal->skip_samples;
2584  avctx->internal->skip_samples = 0;
2585  }
2586  }
2587 
2588  if (discard_padding > 0 && discard_padding <= frame->nb_samples && *got_frame_ptr &&
2589  !(avctx->flags2 & CODEC_FLAG2_SKIP_MANUAL)) {
2590  if (discard_padding == frame->nb_samples) {
2591  *got_frame_ptr = 0;
2592  } else {
2593  if(avctx->pkt_timebase.num && avctx->sample_rate) {
2594  int64_t diff_ts = av_rescale_q(frame->nb_samples - discard_padding,
2595  (AVRational){1, avctx->sample_rate},
2596  avctx->pkt_timebase);
2597  if (av_frame_get_pkt_duration(frame) >= diff_ts)
2598  av_frame_set_pkt_duration(frame, av_frame_get_pkt_duration(frame) - diff_ts);
2599  } else {
2600  av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for discarded samples.\n");
2601  }
2602  av_log(avctx, AV_LOG_DEBUG, "discard %d/%d samples\n",
2603  discard_padding, frame->nb_samples);
2604  frame->nb_samples -= discard_padding;
2605  }
2606  }
2607 
2608  if ((avctx->flags2 & CODEC_FLAG2_SKIP_MANUAL) && *got_frame_ptr) {
2610  if (fside) {
2611  AV_WL32(fside->data, avctx->internal->skip_samples);
2612  AV_WL32(fside->data + 4, discard_padding);
2613  AV_WL8(fside->data + 8, skip_reason);
2614  AV_WL8(fside->data + 9, discard_reason);
2615  avctx->internal->skip_samples = 0;
2616  }
2617  }
2618 fail:
2619  avctx->internal->pkt = NULL;
2620  if (did_split) {
2622  if(ret == tmp.size)
2623  ret = avpkt->size;
2624  }
2625 
2626  if (ret >= 0 && *got_frame_ptr) {
2627  if (!avctx->refcounted_frames) {
2628  int err = unrefcount_frame(avci, frame);
2629  if (err < 0)
2630  return err;
2631  }
2632  } else
2633  av_frame_unref(frame);
2634  }
2635 
2636  return ret;
2637 }
2638 
2639 #define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
2641  AVPacket *outpkt, const AVPacket *inpkt)
2642 {
2643 #if CONFIG_ICONV
2644  iconv_t cd = (iconv_t)-1;
2645  int ret = 0;
2646  char *inb, *outb;
2647  size_t inl, outl;
2648  AVPacket tmp;
2649 #endif
2650 
2651  if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER || inpkt->size == 0)
2652  return 0;
2653 
2654 #if CONFIG_ICONV
2655  cd = iconv_open("UTF-8", avctx->sub_charenc);
2656  av_assert0(cd != (iconv_t)-1);
2657 
2658  inb = inpkt->data;
2659  inl = inpkt->size;
2660 
2661  if (inl >= INT_MAX / UTF8_MAX_BYTES - FF_INPUT_BUFFER_PADDING_SIZE) {
2662  av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n");
2663  ret = AVERROR(ENOMEM);
2664  goto end;
2665  }
2666 
2667  ret = av_new_packet(&tmp, inl * UTF8_MAX_BYTES);
2668  if (ret < 0)
2669  goto end;
2670  outpkt->buf = tmp.buf;
2671  outpkt->data = tmp.data;
2672  outpkt->size = tmp.size;
2673  outb = outpkt->data;
2674  outl = outpkt->size;
2675 
2676  if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
2677  iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
2678  outl >= outpkt->size || inl != 0) {
2679  ret = FFMIN(AVERROR(errno), -1);
2680  av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
2681  "from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
2682  av_free_packet(&tmp);
2683  goto end;
2684  }
2685  outpkt->size -= outl;
2686  memset(outpkt->data + outpkt->size, 0, outl);
2687 
2688 end:
2689  if (cd != (iconv_t)-1)
2690  iconv_close(cd);
2691  return ret;
2692 #else
2693  av_log(avctx, AV_LOG_ERROR, "requesting subtitles recoding without iconv");
2694  return AVERROR(EINVAL);
2695 #endif
2696 }
2697 
2698 static int utf8_check(const uint8_t *str)
2699 {
2700  const uint8_t *byte;
2701  uint32_t codepoint, min;
2702 
2703  while (*str) {
2704  byte = str;
2705  GET_UTF8(codepoint, *(byte++), return 0;);
2706  min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
2707  1 << (5 * (byte - str) - 4);
2708  if (codepoint < min || codepoint >= 0x110000 ||
2709  codepoint == 0xFFFE /* BOM */ ||
2710  codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
2711  return 0;
2712  str = byte;
2713  }
2714  return 1;
2715 }
2716 
2718  int *got_sub_ptr,
2719  AVPacket *avpkt)
2720 {
2721  int i, ret = 0;
2722 
2723  if (!avpkt->data && avpkt->size) {
2724  av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
2725  return AVERROR(EINVAL);
2726  }
2727  if (!avctx->codec)
2728  return AVERROR(EINVAL);
2729  if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
2730  av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
2731  return AVERROR(EINVAL);
2732  }
2733 
2734  *got_sub_ptr = 0;
2735  get_subtitle_defaults(sub);
2736 
2737  if ((avctx->codec->capabilities & CODEC_CAP_DELAY) || avpkt->size) {
2738  AVPacket pkt_recoded;
2739  AVPacket tmp = *avpkt;
2740  int did_split = av_packet_split_side_data(&tmp);
2741  //apply_param_change(avctx, &tmp);
2742 
2743  if (did_split) {
2744  /* FFMIN() prevents overflow in case the packet wasn't allocated with
2745  * proper padding.
2746  * If the side data is smaller than the buffer padding size, the
2747  * remaining bytes should have already been filled with zeros by the
2748  * original packet allocation anyway. */
2749  memset(tmp.data + tmp.size, 0,
2750  FFMIN(avpkt->size - tmp.size, FF_INPUT_BUFFER_PADDING_SIZE));
2751  }
2752 
2753  pkt_recoded = tmp;
2754  ret = recode_subtitle(avctx, &pkt_recoded, &tmp);
2755  if (ret < 0) {
2756  *got_sub_ptr = 0;
2757  } else {
2758  avctx->internal->pkt = &pkt_recoded;
2759 
2760  if (avctx->pkt_timebase.den && avpkt->pts != AV_NOPTS_VALUE)
2761  sub->pts = av_rescale_q(avpkt->pts,
2762  avctx->pkt_timebase, AV_TIME_BASE_Q);
2763  ret = avctx->codec->decode(avctx, sub, got_sub_ptr, &pkt_recoded);
2764  av_assert1((ret >= 0) >= !!*got_sub_ptr &&
2765  !!*got_sub_ptr >= !!sub->num_rects);
2766 
2767  if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
2768  avctx->pkt_timebase.num) {
2769  AVRational ms = { 1, 1000 };
2770  sub->end_display_time = av_rescale_q(avpkt->duration,
2771  avctx->pkt_timebase, ms);
2772  }
2773 
2774  for (i = 0; i < sub->num_rects; i++) {
2775  if (sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
2776  av_log(avctx, AV_LOG_ERROR,
2777  "Invalid UTF-8 in decoded subtitles text; "
2778  "maybe missing -sub_charenc option\n");
2779  avsubtitle_free(sub);
2780  return AVERROR_INVALIDDATA;
2781  }
2782  }
2783 
2784  if (tmp.data != pkt_recoded.data) { // did we recode?
2785  /* prevent from destroying side data from original packet */
2786  pkt_recoded.side_data = NULL;
2787  pkt_recoded.side_data_elems = 0;
2788 
2789  av_free_packet(&pkt_recoded);
2790  }
2792  sub->format = 0;
2793  else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB)
2794  sub->format = 1;
2795  avctx->internal->pkt = NULL;
2796  }
2797 
2798  if (did_split) {
2800  if(ret == tmp.size)
2801  ret = avpkt->size;
2802  }
2803 
2804  if (*got_sub_ptr)
2805  avctx->frame_number++;
2806  }
2807 
2808  return ret;
2809 }
2810 
2812 {
2813  int i;
2814 
2815  for (i = 0; i < sub->num_rects; i++) {
2816  av_freep(&sub->rects[i]->pict.data[0]);
2817  av_freep(&sub->rects[i]->pict.data[1]);
2818  av_freep(&sub->rects[i]->pict.data[2]);
2819  av_freep(&sub->rects[i]->pict.data[3]);
2820  av_freep(&sub->rects[i]->text);
2821  av_freep(&sub->rects[i]->ass);
2822  av_freep(&sub->rects[i]);
2823  }
2824 
2825  av_freep(&sub->rects);
2826 
2827  memset(sub, 0, sizeof(AVSubtitle));
2828 }
2829 
2831 {
2832  if (!avctx)
2833  return 0;
2834 
2835  if (avcodec_is_open(avctx)) {
2836  FramePool *pool = avctx->internal->pool;
2837  int i;
2838  if (CONFIG_FRAME_THREAD_ENCODER &&
2839  avctx->internal->frame_thread_encoder && avctx->thread_count > 1) {
2841  }
2842  if (HAVE_THREADS && avctx->internal->thread_ctx)
2843  ff_thread_free(avctx);
2844  if (avctx->codec && avctx->codec->close)
2845  avctx->codec->close(avctx);
2846  avctx->coded_frame = NULL;
2847  avctx->internal->byte_buffer_size = 0;
2848  av_freep(&avctx->internal->byte_buffer);
2849  av_frame_free(&avctx->internal->to_free);
2850  for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
2851  av_buffer_pool_uninit(&pool->pools[i]);
2852  av_freep(&avctx->internal->pool);
2853 
2854  if (avctx->hwaccel && avctx->hwaccel->uninit)
2855  avctx->hwaccel->uninit(avctx);
2857 
2858  av_freep(&avctx->internal);
2859  }
2860 
2861  if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
2862  av_opt_free(avctx->priv_data);
2863  av_opt_free(avctx);
2864  av_freep(&avctx->priv_data);
2865  if (av_codec_is_encoder(avctx->codec))
2866  av_freep(&avctx->extradata);
2867  avctx->codec = NULL;
2868  avctx->active_thread_type = 0;
2869 
2870  return 0;
2871 }
2872 
2874 {
2875  switch(id){
2876  //This is for future deprecatec codec ids, its empty since
2877  //last major bump but will fill up again over time, please don't remove it
2878 // case AV_CODEC_ID_UTVIDEO_DEPRECATED: return AV_CODEC_ID_UTVIDEO;
2897  default : return id;
2898  }
2899 }
2900 
2901 static AVCodec *find_encdec(enum AVCodecID id, int encoder)
2902 {
2903  AVCodec *p, *experimental = NULL;
2904  p = first_avcodec;
2905  id= remap_deprecated_codec_id(id);
2906  while (p) {
2907  if ((encoder ? av_codec_is_encoder(p) : av_codec_is_decoder(p)) &&
2908  p->id == id) {
2909  if (p->capabilities & CODEC_CAP_EXPERIMENTAL && !experimental) {
2910  experimental = p;
2911  } else
2912  return p;
2913  }
2914  p = p->next;
2915  }
2916  return experimental;
2917 }
2918 
2920 {
2921  return find_encdec(id, 1);
2922 }
2923 
2925 {
2926  AVCodec *p;
2927  if (!name)
2928  return NULL;
2929  p = first_avcodec;
2930  while (p) {
2931  if (av_codec_is_encoder(p) && strcmp(name, p->name) == 0)
2932  return p;
2933  p = p->next;
2934  }
2935  return NULL;
2936 }
2937 
2939 {
2940  return find_encdec(id, 0);
2941 }
2942 
2944 {
2945  AVCodec *p;
2946  if (!name)
2947  return NULL;
2948  p = first_avcodec;
2949  while (p) {
2950  if (av_codec_is_decoder(p) && strcmp(name, p->name) == 0)
2951  return p;
2952  p = p->next;
2953  }
2954  return NULL;
2955 }
2956 
2957 const char *avcodec_get_name(enum AVCodecID id)
2958 {
2959  const AVCodecDescriptor *cd;
2960  AVCodec *codec;
2961 
2962  if (id == AV_CODEC_ID_NONE)
2963  return "none";
2964  cd = avcodec_descriptor_get(id);
2965  if (cd)
2966  return cd->name;
2967  av_log(NULL, AV_LOG_WARNING, "Codec 0x%x is not in the full list.\n", id);
2968  codec = avcodec_find_decoder(id);
2969  if (codec)
2970  return codec->name;
2971  codec = avcodec_find_encoder(id);
2972  if (codec)
2973  return codec->name;
2974  return "unknown_codec";
2975 }
2976 
2977 size_t av_get_codec_tag_string(char *buf, size_t buf_size, unsigned int codec_tag)
2978 {
2979  int i, len, ret = 0;
2980 
2981 #define TAG_PRINT(x) \
2982  (((x) >= '0' && (x) <= '9') || \
2983  ((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || \
2984  ((x) == '.' || (x) == ' ' || (x) == '-' || (x) == '_'))
2985 
2986  for (i = 0; i < 4; i++) {
2987  len = snprintf(buf, buf_size,
2988  TAG_PRINT(codec_tag & 0xFF) ? "%c" : "[%d]", codec_tag & 0xFF);
2989  buf += len;
2990  buf_size = buf_size > len ? buf_size - len : 0;
2991  ret += len;
2992  codec_tag >>= 8;
2993  }
2994  return ret;
2995 }
2996 
2997 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
2998 {
2999  const char *codec_type;
3000  const char *codec_name;
3001  const char *profile = NULL;
3002  const AVCodec *p;
3003  int bitrate;
3004  int new_line = 0;
3005  AVRational display_aspect_ratio;
3006  const char *separator = enc->dump_separator ? (const char *)enc->dump_separator : ", ";
3007 
3008  if (!buf || buf_size <= 0)
3009  return;
3010  codec_type = av_get_media_type_string(enc->codec_type);
3011  codec_name = avcodec_get_name(enc->codec_id);
3012  if (enc->profile != FF_PROFILE_UNKNOWN) {
3013  if (enc->codec)
3014  p = enc->codec;
3015  else
3016  p = encode ? avcodec_find_encoder(enc->codec_id) :
3018  if (p)
3019  profile = av_get_profile_name(p, enc->profile);
3020  }
3021 
3022  snprintf(buf, buf_size, "%s: %s", codec_type ? codec_type : "unknown",
3023  codec_name);
3024  buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
3025 
3026  if (enc->codec && strcmp(enc->codec->name, codec_name))
3027  snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", enc->codec->name);
3028 
3029  if (profile)
3030  snprintf(buf + strlen(buf), buf_size - strlen(buf), " (%s)", profile);
3031  if ( enc->codec_type == AVMEDIA_TYPE_VIDEO
3033  && enc->refs)
3034  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3035  ", %d reference frame%s",
3036  enc->refs, enc->refs > 1 ? "s" : "");
3037 
3038  if (enc->codec_tag) {
3039  char tag_buf[32];
3040  av_get_codec_tag_string(tag_buf, sizeof(tag_buf), enc->codec_tag);
3041  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3042  " (%s / 0x%04X)", tag_buf, enc->codec_tag);
3043  }
3044 
3045  switch (enc->codec_type) {
3046  case AVMEDIA_TYPE_VIDEO:
3047  {
3048  char detail[256] = "(";
3049 
3050  av_strlcat(buf, separator, buf_size);
3051 
3052  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3053  "%s", enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
3055  if (enc->bits_per_raw_sample && enc->pix_fmt != AV_PIX_FMT_NONE &&
3057  av_strlcatf(detail, sizeof(detail), "%d bpc, ", enc->bits_per_raw_sample);
3059  av_strlcatf(detail, sizeof(detail), "%s, ",
3061 
3062  if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
3064  enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
3065  if (enc->colorspace != (int)enc->color_primaries ||
3066  enc->colorspace != (int)enc->color_trc) {
3067  new_line = 1;
3068  av_strlcatf(detail, sizeof(detail), "%s/%s/%s, ",
3072  } else
3073  av_strlcatf(detail, sizeof(detail), "%s, ",
3075  }
3076 
3077  if (av_log_get_level() >= AV_LOG_DEBUG &&
3079  av_strlcatf(detail, sizeof(detail), "%s, ",
3081 
3082  if (strlen(detail) > 1) {
3083  detail[strlen(detail) - 2] = 0;
3084  av_strlcatf(buf, buf_size, "%s)", detail);
3085  }
3086  }
3087 
3088  if (enc->width) {
3089  av_strlcat(buf, new_line ? separator : ", ", buf_size);
3090 
3091  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3092  "%dx%d",
3093  enc->width, enc->height);
3094 
3095  if (av_log_get_level() >= AV_LOG_VERBOSE &&
3096  (enc->width != enc->coded_width ||
3097  enc->height != enc->coded_height))
3098  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3099  " (%dx%d)", enc->coded_width, enc->coded_height);
3100 
3101  if (enc->sample_aspect_ratio.num) {
3102  av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
3103  enc->width * enc->sample_aspect_ratio.num,
3104  enc->height * enc->sample_aspect_ratio.den,
3105  1024 * 1024);
3106  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3107  " [SAR %d:%d DAR %d:%d]",
3109  display_aspect_ratio.num, display_aspect_ratio.den);
3110  }
3111  if (av_log_get_level() >= AV_LOG_DEBUG) {
3112  int g = av_gcd(enc->time_base.num, enc->time_base.den);
3113  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3114  ", %d/%d",
3115  enc->time_base.num / g, enc->time_base.den / g);
3116  }
3117  }
3118  if (encode) {
3119  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3120  ", q=%d-%d", enc->qmin, enc->qmax);
3121  }
3122  break;
3123  case AVMEDIA_TYPE_AUDIO:
3124  av_strlcat(buf, separator, buf_size);
3125 
3126  if (enc->sample_rate) {
3127  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3128  "%d Hz, ", enc->sample_rate);
3129  }
3130  av_get_channel_layout_string(buf + strlen(buf), buf_size - strlen(buf), enc->channels, enc->channel_layout);
3131  if (enc->sample_fmt != AV_SAMPLE_FMT_NONE) {
3132  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3133  ", %s", av_get_sample_fmt_name(enc->sample_fmt));
3134  }
3135  if ( enc->bits_per_raw_sample > 0
3137  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3138  " (%d bit)", enc->bits_per_raw_sample);
3139  break;
3140  case AVMEDIA_TYPE_DATA:
3141  if (av_log_get_level() >= AV_LOG_DEBUG) {
3142  int g = av_gcd(enc->time_base.num, enc->time_base.den);
3143  if (g)
3144  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3145  ", %d/%d",
3146  enc->time_base.num / g, enc->time_base.den / g);
3147  }
3148  break;
3149  case AVMEDIA_TYPE_SUBTITLE:
3150  if (enc->width)
3151  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3152  ", %dx%d", enc->width, enc->height);
3153  break;
3154  default:
3155  return;
3156  }
3157  if (encode) {
3158  if (enc->flags & CODEC_FLAG_PASS1)
3159  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3160  ", pass 1");
3161  if (enc->flags & CODEC_FLAG_PASS2)
3162  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3163  ", pass 2");
3164  }
3165  bitrate = get_bit_rate(enc);
3166  if (bitrate != 0) {
3167  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3168  ", %d kb/s", bitrate / 1000);
3169  } else if (enc->rc_max_rate > 0) {
3170  snprintf(buf + strlen(buf), buf_size - strlen(buf),
3171  ", max. %d kb/s", enc->rc_max_rate / 1000);
3172  }
3173 }
3174 
3175 const char *av_get_profile_name(const AVCodec *codec, int profile)
3176 {
3177  const AVProfile *p;
3178  if (profile == FF_PROFILE_UNKNOWN || !codec->profiles)
3179  return NULL;
3180 
3181  for (p = codec->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
3182  if (p->profile == profile)
3183  return p->name;
3184 
3185  return NULL;
3186 }
3187 
3188 unsigned avcodec_version(void)
3189 {
3190 // av_assert0(AV_CODEC_ID_V410==164);
3193 // av_assert0(AV_CODEC_ID_BMV_AUDIO==86071);
3194  av_assert0(AV_CODEC_ID_SRT==94216);
3196 
3202  return LIBAVCODEC_VERSION_INT;
3203 }
3204 
3205 const char *avcodec_configuration(void)
3206 {
3207  return FFMPEG_CONFIGURATION;
3208 }
3209 
3210 const char *avcodec_license(void)
3211 {
3212 #define LICENSE_PREFIX "libavcodec license: "
3213  return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
3214 }
3215 
3217 {
3218  if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
3219  ff_thread_flush(avctx);
3220  else if (avctx->codec->flush)
3221  avctx->codec->flush(avctx);
3222 
3223  avctx->pts_correction_last_pts =
3224  avctx->pts_correction_last_dts = INT64_MIN;
3225 
3226  if (!avctx->refcounted_frames)
3227  av_frame_unref(avctx->internal->to_free);
3228 }
3229 
3231 {
3232  switch (codec_id) {
3233  case AV_CODEC_ID_8SVX_EXP:
3234  case AV_CODEC_ID_8SVX_FIB:
3235  case AV_CODEC_ID_ADPCM_CT:
3242  return 4;
3243  case AV_CODEC_ID_DSD_LSBF:
3244  case AV_CODEC_ID_DSD_MSBF:
3247  case AV_CODEC_ID_PCM_ALAW:
3248  case AV_CODEC_ID_PCM_MULAW:
3249  case AV_CODEC_ID_PCM_S8:
3251  case AV_CODEC_ID_PCM_U8:
3252  case AV_CODEC_ID_PCM_ZORK:
3253  return 8;
3254  case AV_CODEC_ID_PCM_S16BE:
3256  case AV_CODEC_ID_PCM_S16LE:
3258  case AV_CODEC_ID_PCM_U16BE:
3259  case AV_CODEC_ID_PCM_U16LE:
3260  return 16;
3262  case AV_CODEC_ID_PCM_S24BE:
3263  case AV_CODEC_ID_PCM_S24LE:
3265  case AV_CODEC_ID_PCM_U24BE:
3266  case AV_CODEC_ID_PCM_U24LE:
3267  return 24;
3268  case AV_CODEC_ID_PCM_S32BE:
3269  case AV_CODEC_ID_PCM_S32LE:
3271  case AV_CODEC_ID_PCM_U32BE:
3272  case AV_CODEC_ID_PCM_U32LE:
3273  case AV_CODEC_ID_PCM_F32BE:
3274  case AV_CODEC_ID_PCM_F32LE:
3275  return 32;
3276  case AV_CODEC_ID_PCM_F64BE:
3277  case AV_CODEC_ID_PCM_F64LE:
3278  return 64;
3279  default:
3280  return 0;
3281  }
3282 }
3283 
3285 {
3286  static const enum AVCodecID map[AV_SAMPLE_FMT_NB][2] = {
3297  };
3298  if (fmt < 0 || fmt >= AV_SAMPLE_FMT_NB)
3299  return AV_CODEC_ID_NONE;
3300  if (be < 0 || be > 1)
3301  be = AV_NE(1, 0);
3302  return map[fmt][be];
3303 }
3304 
3306 {
3307  switch (codec_id) {
3309  return 2;
3311  return 3;
3315  case AV_CODEC_ID_ADPCM_SWF:
3316  case AV_CODEC_ID_ADPCM_MS:
3317  return 4;
3318  default:
3319  return av_get_exact_bits_per_sample(codec_id);
3320  }
3321 }
3322 
3323 int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
3324 {
3325  int id, sr, ch, ba, tag, bps;
3326 
3327  id = avctx->codec_id;
3328  sr = avctx->sample_rate;
3329  ch = avctx->channels;
3330  ba = avctx->block_align;
3331  tag = avctx->codec_tag;
3332  bps = av_get_exact_bits_per_sample(avctx->codec_id);
3333 
3334  /* codecs with an exact constant bits per sample */
3335  if (bps > 0 && ch > 0 && frame_bytes > 0 && ch < 32768 && bps < 32768)
3336  return (frame_bytes * 8LL) / (bps * ch);
3337  bps = avctx->bits_per_coded_sample;
3338 
3339  /* codecs with a fixed packet duration */
3340  switch (id) {
3341  case AV_CODEC_ID_ADPCM_ADX: return 32;
3342  case AV_CODEC_ID_ADPCM_IMA_QT: return 64;
3343  case AV_CODEC_ID_ADPCM_EA_XAS: return 128;
3344  case AV_CODEC_ID_AMR_NB:
3345  case AV_CODEC_ID_EVRC:
3346  case AV_CODEC_ID_GSM:
3347  case AV_CODEC_ID_QCELP:
3348  case AV_CODEC_ID_RA_288: return 160;
3349  case AV_CODEC_ID_AMR_WB:
3350  case AV_CODEC_ID_GSM_MS: return 320;
3351  case AV_CODEC_ID_MP1: return 384;
3352  case AV_CODEC_ID_ATRAC1: return 512;
3353  case AV_CODEC_ID_ATRAC3: return 1024;
3354  case AV_CODEC_ID_ATRAC3P: return 2048;
3355  case AV_CODEC_ID_MP2:
3356  case AV_CODEC_ID_MUSEPACK7: return 1152;
3357  case AV_CODEC_ID_AC3: return 1536;
3358  }
3359 
3360  if (sr > 0) {
3361  /* calc from sample rate */
3362  if (id == AV_CODEC_ID_TTA)
3363  return 256 * sr / 245;
3364 
3365  if (ch > 0) {
3366  /* calc from sample rate and channels */
3367  if (id == AV_CODEC_ID_BINKAUDIO_DCT)
3368  return (480 << (sr / 22050)) / ch;
3369  }
3370  }
3371 
3372  if (ba > 0) {
3373  /* calc from block_align */
3374  if (id == AV_CODEC_ID_SIPR) {
3375  switch (ba) {
3376  case 20: return 160;
3377  case 19: return 144;
3378  case 29: return 288;
3379  case 37: return 480;
3380  }
3381  } else if (id == AV_CODEC_ID_ILBC) {
3382  switch (ba) {
3383  case 38: return 160;
3384  case 50: return 240;
3385  }
3386  }
3387  }
3388 
3389  if (frame_bytes > 0) {
3390  /* calc from frame_bytes only */
3391  if (id == AV_CODEC_ID_TRUESPEECH)
3392  return 240 * (frame_bytes / 32);
3393  if (id == AV_CODEC_ID_NELLYMOSER)
3394  return 256 * (frame_bytes / 64);
3395  if (id == AV_CODEC_ID_RA_144)
3396  return 160 * (frame_bytes / 20);
3397  if (id == AV_CODEC_ID_G723_1)
3398  return 240 * (frame_bytes / 24);
3399 
3400  if (bps > 0) {
3401  /* calc from frame_bytes and bits_per_coded_sample */
3402  if (id == AV_CODEC_ID_ADPCM_G726)
3403  return frame_bytes * 8 / bps;
3404  }
3405 
3406  if (ch > 0) {
3407  /* calc from frame_bytes and channels */
3408  switch (id) {
3409  case AV_CODEC_ID_ADPCM_AFC:
3410  return frame_bytes / (9 * ch) * 16;
3411  case AV_CODEC_ID_ADPCM_DTK:
3412  return frame_bytes / (16 * ch) * 28;
3413  case AV_CODEC_ID_ADPCM_4XM:
3415  return (frame_bytes - 4 * ch) * 2 / ch;
3417  return (frame_bytes - 4) * 2 / ch;
3419  return (frame_bytes - 8) * 2 / ch;
3420  case AV_CODEC_ID_ADPCM_XA:
3421  return (frame_bytes / 128) * 224 / ch;
3423  return (frame_bytes - 6 - ch) / ch;
3424  case AV_CODEC_ID_ROQ_DPCM:
3425  return (frame_bytes - 8) / ch;
3426  case AV_CODEC_ID_XAN_DPCM:
3427  return (frame_bytes - 2 * ch) / ch;
3428  case AV_CODEC_ID_MACE3:
3429  return 3 * frame_bytes / ch;
3430  case AV_CODEC_ID_MACE6:
3431  return 6 * frame_bytes / ch;
3432  case AV_CODEC_ID_PCM_LXF:
3433  return 2 * (frame_bytes / (5 * ch));
3434  case AV_CODEC_ID_IAC:
3435  case AV_CODEC_ID_IMC:
3436  return 4 * frame_bytes / ch;
3437  }
3438 
3439  if (tag) {
3440  /* calc from frame_bytes, channels, and codec_tag */
3441  if (id == AV_CODEC_ID_SOL_DPCM) {
3442  if (tag == 3)
3443  return frame_bytes / ch;
3444  else
3445  return frame_bytes * 2 / ch;
3446  }
3447  }
3448 
3449  if (ba > 0) {
3450  /* calc from frame_bytes, channels, and block_align */
3451  int blocks = frame_bytes / ba;
3452  switch (avctx->codec_id) {
3454  if (bps < 2 || bps > 5)
3455  return 0;
3456  return blocks * (1 + (ba - 4 * ch) / (bps * ch) * 8);
3458  return blocks * (((ba - 16) * 2 / 3 * 4) / ch);
3460  return blocks * (1 + (ba - 4 * ch) * 2 / ch);
3462  return blocks * ((ba - 4 * ch) * 2 / ch);
3463  case AV_CODEC_ID_ADPCM_MS:
3464  return blocks * (2 + (ba - 7 * ch) * 2 / ch);
3465  }
3466  }
3467 
3468  if (bps > 0) {
3469  /* calc from frame_bytes, channels, and bits_per_coded_sample */
3470  switch (avctx->codec_id) {
3471  case AV_CODEC_ID_PCM_DVD:
3472  if(bps<4)
3473  return 0;
3474  return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
3476  if(bps<4)
3477  return 0;
3478  return frame_bytes / ((FFALIGN(ch, 2) * bps) / 8);
3479  case AV_CODEC_ID_S302M:
3480  return 2 * (frame_bytes / ((bps + 4) / 4)) / ch;
3481  }
3482  }
3483  }
3484  }
3485 
3486  /* Fall back on using frame_size */
3487  if (avctx->frame_size > 1 && frame_bytes)
3488  return avctx->frame_size;
3489 
3490  //For WMA we currently have no other means to calculate duration thus we
3491  //do it here by assuming CBR, which is true for all known cases.
3492  if (avctx->bit_rate>0 && frame_bytes>0 && avctx->sample_rate>0 && avctx->block_align>1) {
3493  if (avctx->codec_id == AV_CODEC_ID_WMAV1 || avctx->codec_id == AV_CODEC_ID_WMAV2)
3494  return (frame_bytes * 8LL * avctx->sample_rate) / avctx->bit_rate;
3495  }
3496 
3497  return 0;
3498 }
3499 
3500 #if !HAVE_THREADS
3502 {
3503  return -1;
3504 }
3505 
3506 #endif
3507 
3508 unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
3509 {
3510  unsigned int n = 0;
3511 
3512  while (v >= 0xff) {
3513  *s++ = 0xff;
3514  v -= 0xff;
3515  n++;
3516  }
3517  *s = v;
3518  n++;
3519  return n;
3520 }
3521 
3522 int ff_match_2uint16(const uint16_t(*tab)[2], int size, int a, int b)
3523 {
3524  int i;
3525  for (i = 0; i < size && !(tab[i][0] == a && tab[i][1] == b); i++) ;
3526  return i;
3527 }
3528 
3529 #if FF_API_MISSING_SAMPLE
3531 void av_log_missing_feature(void *avc, const char *feature, int want_sample)
3532 {
3533  av_log(avc, AV_LOG_WARNING, "%s is not implemented. Update your FFmpeg "
3534  "version to the newest one from Git. If the problem still "
3535  "occurs, it means that your file has a feature which has not "
3536  "been implemented.\n", feature);
3537  if(want_sample)
3539 }
3540 
3541 void av_log_ask_for_sample(void *avc, const char *msg, ...)
3542 {
3543  va_list argument_list;
3544 
3545  va_start(argument_list, msg);
3546 
3547  if (msg)
3548  av_vlog(avc, AV_LOG_WARNING, msg, argument_list);
3549  av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "
3550  "of this file to ftp://upload.ffmpeg.org/incoming/ "
3551  "and contact the ffmpeg-devel mailing list. (ffmpeg-devel@ffmpeg.org)\n");
3552 
3553  va_end(argument_list);
3554 }
3556 #endif /* FF_API_MISSING_SAMPLE */
3557 
3560 
3562 {
3563  AVHWAccel **p = last_hwaccel;
3564  hwaccel->next = NULL;
3565  while(*p || avpriv_atomic_ptr_cas((void * volatile *)p, NULL, hwaccel))
3566  p = &(*p)->next;
3567  last_hwaccel = &hwaccel->next;
3568 }
3569 
3571 {
3572  return hwaccel ? hwaccel->next : first_hwaccel;
3573 }
3574 
3575 int av_lockmgr_register(int (*cb)(void **mutex, enum AVLockOp op))
3576 {
3577  if (lockmgr_cb) {
3578  // There is no good way to rollback a failure to destroy the
3579  // mutex, so we ignore failures.
3582  lockmgr_cb = NULL;
3583  codec_mutex = NULL;
3584  avformat_mutex = NULL;
3585  }
3586 
3587  if (cb) {
3588  void *new_codec_mutex = NULL;
3589  void *new_avformat_mutex = NULL;
3590  int err;
3591  if (err = cb(&new_codec_mutex, AV_LOCK_CREATE)) {
3592  return err > 0 ? AVERROR_UNKNOWN : err;
3593  }
3594  if (err = cb(&new_avformat_mutex, AV_LOCK_CREATE)) {
3595  // Ignore failures to destroy the newly created mutex.
3596  cb(&new_codec_mutex, AV_LOCK_DESTROY);
3597  return err > 0 ? AVERROR_UNKNOWN : err;
3598  }
3599  lockmgr_cb = cb;
3600  codec_mutex = new_codec_mutex;
3601  avformat_mutex = new_avformat_mutex;
3602  }
3603 
3604  return 0;
3605 }
3606 
3607 int ff_lock_avcodec(AVCodecContext *log_ctx, const AVCodec *codec)
3608 {
3609  if (lockmgr_cb) {
3611  return -1;
3612  }
3613 
3616  av_log(log_ctx, AV_LOG_ERROR,
3617  "Insufficient thread locking. At least %d threads are "
3618  "calling avcodec_open2() at the same time right now.\n",
3620  if (!lockmgr_cb)
3621  av_log(log_ctx, AV_LOG_ERROR, "No lock manager is set, please see av_lockmgr_register()\n");
3622  ff_avcodec_locked = 1;
3624  return AVERROR(EINVAL);
3625  }
3627  ff_avcodec_locked = 1;
3628  return 0;
3629 }
3630 
3632 {
3634  ff_avcodec_locked = 0;
3636  if (lockmgr_cb) {
3638  return -1;
3639  }
3640 
3641  return 0;
3642 }
3643 
3645 {
3646  if (lockmgr_cb) {
3648  return -1;
3649  }
3650  return 0;
3651 }
3652 
3654 {
3655  if (lockmgr_cb) {
3657  return -1;
3658  }
3659  return 0;
3660 }
3661 
3662 unsigned int avpriv_toupper4(unsigned int x)
3663 {
3664  return av_toupper(x & 0xFF) +
3665  (av_toupper((x >> 8) & 0xFF) << 8) +
3666  (av_toupper((x >> 16) & 0xFF) << 16) +
3667 ((unsigned)av_toupper((x >> 24) & 0xFF) << 24);
3668 }
3669 
3671 {
3672  int ret;
3673 
3674  dst->owner = src->owner;
3675 
3676  ret = av_frame_ref(dst->f, src->f);
3677  if (ret < 0)
3678  return ret;
3679 
3680  av_assert0(!dst->progress);
3681 
3682  if (src->progress &&
3683  !(dst->progress = av_buffer_ref(src->progress))) {
3684  ff_thread_release_buffer(dst->owner, dst);
3685  return AVERROR(ENOMEM);
3686  }
3687 
3688  return 0;
3689 }
3690 
3691 #if !HAVE_THREADS
3692 
3694 {
3695  return ff_get_format(avctx, fmt);
3696 }
3697 
3699 {
3700  f->owner = avctx;
3701  return ff_get_buffer(avctx, f->f, flags);
3702 }
3703 
3705 {
3706  if (f->f)
3707  av_frame_unref(f->f);
3708 }
3709 
3711 {
3712 }
3713 
3714 void ff_thread_report_progress(ThreadFrame *f, int progress, int field)
3715 {
3716 }
3717 
3718 void ff_thread_await_progress(ThreadFrame *f, int progress, int field)
3719 {
3720 }
3721 
3723 {
3724  return 1;
3725 }
3726 
3728 {
3729  return 0;
3730 }
3731 
3733 {
3734 }
3735 
3736 void ff_thread_await_progress2(AVCodecContext *avctx, int field, int thread, int shift)
3737 {
3738 }
3739 
3740 void ff_thread_report_progress2(AVCodecContext *avctx, int field, int thread, int n)
3741 {
3742 }
3743 
3744 #endif
3745 
3747 {
3748  AVCodec *c= avcodec_find_decoder(codec_id);
3749  if(!c)
3750  c= avcodec_find_encoder(codec_id);
3751  if(c)
3752  return c->type;
3753 
3754  if (codec_id <= AV_CODEC_ID_NONE)
3755  return AVMEDIA_TYPE_UNKNOWN;
3756  else if (codec_id < AV_CODEC_ID_FIRST_AUDIO)
3757  return AVMEDIA_TYPE_VIDEO;
3758  else if (codec_id < AV_CODEC_ID_FIRST_SUBTITLE)
3759  return AVMEDIA_TYPE_AUDIO;
3760  else if (codec_id < AV_CODEC_ID_FIRST_UNKNOWN)
3761  return AVMEDIA_TYPE_SUBTITLE;
3762 
3763  return AVMEDIA_TYPE_UNKNOWN;
3764 }
3765 
3767 {
3768  return !!s->internal;
3769 }
3770 
3771 int avpriv_bprint_to_extradata(AVCodecContext *avctx, struct AVBPrint *buf)
3772 {
3773  int ret;
3774  char *str;
3775 
3776  ret = av_bprint_finalize(buf, &str);
3777  if (ret < 0)
3778  return ret;
3779  if (!av_bprint_is_complete(buf)) {
3780  av_free(str);
3781  return AVERROR(ENOMEM);
3782  }
3783 
3784  avctx->extradata = str;
3785  /* Note: the string is NUL terminated (so extradata can be read as a
3786  * string), but the ending character is not accounted in the size (in
3787  * binary formats you are likely not supposed to mux that character). When
3788  * extradata is copied, it is also padded with FF_INPUT_BUFFER_PADDING_SIZE
3789  * zeros. */
3790  avctx->extradata_size = buf->len;
3791  return 0;
3792 }
3793 
3794 const uint8_t *avpriv_find_start_code(const uint8_t *av_restrict p,
3795  const uint8_t *end,
3796  uint32_t *av_restrict state)
3797 {
3798  int i;
3799 
3800  av_assert0(p <= end);
3801  if (p >= end)
3802  return end;
3803 
3804  for (i = 0; i < 3; i++) {
3805  uint32_t tmp = *state << 8;
3806  *state = tmp + *(p++);
3807  if (tmp == 0x100 || p == end)
3808  return p;
3809  }
3810 
3811  while (p < end) {
3812  if (p[-1] > 1 ) p += 3;
3813  else if (p[-2] ) p += 2;
3814  else if (p[-3]|(p[-1]-1)) p++;
3815  else {
3816  p++;
3817  break;
3818  }
3819  }
3820 
3821  p = FFMIN(p, end) - 4;
3822  *state = AV_RB32(p);
3823 
3824  return p + 4;
3825 }