FFmpeg
decode.c
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1 /*
2  * generic decoding-related code
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include <stdint.h>
22 #include <string.h>
23 
24 #include "config.h"
25 
26 #if CONFIG_ICONV
27 # include <iconv.h>
28 #endif
29 
30 #include "libavutil/avassert.h"
31 #include "libavutil/avstring.h"
32 #include "libavutil/bprint.h"
33 #include "libavutil/common.h"
34 #include "libavutil/frame.h"
35 #include "libavutil/hwcontext.h"
36 #include "libavutil/imgutils.h"
37 #include "libavutil/internal.h"
38 #include "libavutil/intmath.h"
39 #include "libavutil/opt.h"
40 
41 #include "avcodec.h"
42 #include "bytestream.h"
43 #include "decode.h"
44 #include "hwaccel.h"
45 #include "internal.h"
46 #include "thread.h"
47 
48 static int apply_param_change(AVCodecContext *avctx, const AVPacket *avpkt)
49 {
50  int size = 0, ret;
51  const uint8_t *data;
52  uint32_t flags;
53  int64_t val;
54 
56  if (!data)
57  return 0;
58 
59  if (!(avctx->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE)) {
60  av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
61  "changes, but PARAM_CHANGE side data was sent to it.\n");
62  ret = AVERROR(EINVAL);
63  goto fail2;
64  }
65 
66  if (size < 4)
67  goto fail;
68 
69  flags = bytestream_get_le32(&data);
70  size -= 4;
71 
73  if (size < 4)
74  goto fail;
75  val = bytestream_get_le32(&data);
76  if (val <= 0 || val > INT_MAX) {
77  av_log(avctx, AV_LOG_ERROR, "Invalid channel count");
79  goto fail2;
80  }
81  avctx->channels = val;
82  size -= 4;
83  }
85  if (size < 8)
86  goto fail;
87  avctx->channel_layout = bytestream_get_le64(&data);
88  size -= 8;
89  }
91  if (size < 4)
92  goto fail;
93  val = bytestream_get_le32(&data);
94  if (val <= 0 || val > INT_MAX) {
95  av_log(avctx, AV_LOG_ERROR, "Invalid sample rate");
97  goto fail2;
98  }
99  avctx->sample_rate = val;
100  size -= 4;
101  }
103  if (size < 8)
104  goto fail;
105  avctx->width = bytestream_get_le32(&data);
106  avctx->height = bytestream_get_le32(&data);
107  size -= 8;
108  ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
109  if (ret < 0)
110  goto fail2;
111  }
112 
113  return 0;
114 fail:
115  av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
117 fail2:
118  if (ret < 0) {
119  av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
120  if (avctx->err_recognition & AV_EF_EXPLODE)
121  return ret;
122  }
123  return 0;
124 }
125 
127 {
128  int ret = 0;
129 
131  if (pkt) {
132  ret = av_packet_copy_props(avci->last_pkt_props, pkt);
133  if (!ret)
134  avci->last_pkt_props->size = pkt->size; // HACK: Needed for ff_decode_frame_props().
135  }
136  return ret;
137 }
138 
140 {
141  int ret;
142 
143  /* move the original frame to our backup */
144  av_frame_unref(avci->to_free);
145  av_frame_move_ref(avci->to_free, frame);
146 
147  /* now copy everything except the AVBufferRefs back
148  * note that we make a COPY of the side data, so calling av_frame_free() on
149  * the caller's frame will work properly */
150  ret = av_frame_copy_props(frame, avci->to_free);
151  if (ret < 0)
152  return ret;
153 
154  memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
155  memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
156  if (avci->to_free->extended_data != avci->to_free->data) {
157  int planes = avci->to_free->channels;
158  int size = planes * sizeof(*frame->extended_data);
159 
160  if (!size) {
161  av_frame_unref(frame);
162  return AVERROR_BUG;
163  }
164 
165  frame->extended_data = av_malloc(size);
166  if (!frame->extended_data) {
167  av_frame_unref(frame);
168  return AVERROR(ENOMEM);
169  }
170  memcpy(frame->extended_data, avci->to_free->extended_data,
171  size);
172  } else
173  frame->extended_data = frame->data;
174 
175  frame->format = avci->to_free->format;
176  frame->width = avci->to_free->width;
177  frame->height = avci->to_free->height;
178  frame->channel_layout = avci->to_free->channel_layout;
179  frame->nb_samples = avci->to_free->nb_samples;
180  frame->channels = avci->to_free->channels;
181 
182  return 0;
183 }
184 
186 {
187  AVCodecInternal *avci = avctx->internal;
188  DecodeFilterContext *s = &avci->filter;
189  const char *bsfs_str;
190  int ret;
191 
192  if (s->nb_bsfs)
193  return 0;
194 
195  bsfs_str = avctx->codec->bsfs ? avctx->codec->bsfs : "null";
196  while (bsfs_str && *bsfs_str) {
197  AVBSFContext **tmp;
198  const AVBitStreamFilter *filter;
199  char *bsf, *bsf_options_str, *bsf_name;
200 
201  bsf = av_get_token(&bsfs_str, ",");
202  if (!bsf) {
203  ret = AVERROR(ENOMEM);
204  goto fail;
205  }
206  bsf_name = av_strtok(bsf, "=", &bsf_options_str);
207  if (!bsf_name) {
208  av_freep(&bsf);
209  ret = AVERROR(ENOMEM);
210  goto fail;
211  }
212 
213  filter = av_bsf_get_by_name(bsf_name);
214  if (!filter) {
215  av_log(avctx, AV_LOG_ERROR, "A non-existing bitstream filter %s "
216  "requested by a decoder. This is a bug, please report it.\n",
217  bsf_name);
218  av_freep(&bsf);
219  ret = AVERROR_BUG;
220  goto fail;
221  }
222 
223  tmp = av_realloc_array(s->bsfs, s->nb_bsfs + 1, sizeof(*s->bsfs));
224  if (!tmp) {
225  av_freep(&bsf);
226  ret = AVERROR(ENOMEM);
227  goto fail;
228  }
229  s->bsfs = tmp;
230  s->nb_bsfs++;
231 
232  ret = av_bsf_alloc(filter, &s->bsfs[s->nb_bsfs - 1]);
233  if (ret < 0) {
234  av_freep(&bsf);
235  goto fail;
236  }
237 
238  if (s->nb_bsfs == 1) {
239  /* We do not currently have an API for passing the input timebase into decoders,
240  * but no filters used here should actually need it.
241  * So we make up some plausible-looking number (the MPEG 90kHz timebase) */
242  s->bsfs[s->nb_bsfs - 1]->time_base_in = (AVRational){ 1, 90000 };
244  avctx);
245  } else {
246  s->bsfs[s->nb_bsfs - 1]->time_base_in = s->bsfs[s->nb_bsfs - 2]->time_base_out;
247  ret = avcodec_parameters_copy(s->bsfs[s->nb_bsfs - 1]->par_in,
248  s->bsfs[s->nb_bsfs - 2]->par_out);
249  }
250  if (ret < 0) {
251  av_freep(&bsf);
252  goto fail;
253  }
254 
255  if (bsf_options_str && filter->priv_class) {
256  const AVOption *opt = av_opt_next(s->bsfs[s->nb_bsfs - 1]->priv_data, NULL);
257  const char * shorthand[2] = {NULL};
258 
259  if (opt)
260  shorthand[0] = opt->name;
261 
262  ret = av_opt_set_from_string(s->bsfs[s->nb_bsfs - 1]->priv_data, bsf_options_str, shorthand, "=", ":");
263  if (ret < 0) {
264  if (ret != AVERROR(ENOMEM)) {
265  av_log(avctx, AV_LOG_ERROR, "Invalid options for bitstream filter %s "
266  "requested by the decoder. This is a bug, please report it.\n",
267  bsf_name);
268  ret = AVERROR_BUG;
269  }
270  av_freep(&bsf);
271  goto fail;
272  }
273  }
274  av_freep(&bsf);
275 
276  ret = av_bsf_init(s->bsfs[s->nb_bsfs - 1]);
277  if (ret < 0)
278  goto fail;
279 
280  if (*bsfs_str)
281  bsfs_str++;
282  }
283 
284  return 0;
285 fail:
286  ff_decode_bsfs_uninit(avctx);
287  return ret;
288 }
289 
290 /* try to get one output packet from the filter chain */
291 static int bsfs_poll(AVCodecContext *avctx, AVPacket *pkt)
292 {
293  DecodeFilterContext *s = &avctx->internal->filter;
294  int idx, ret;
295 
296  /* start with the last filter in the chain */
297  idx = s->nb_bsfs - 1;
298  while (idx >= 0) {
299  /* request a packet from the currently selected filter */
300  ret = av_bsf_receive_packet(s->bsfs[idx], pkt);
301  if (ret == AVERROR(EAGAIN)) {
302  /* no packets available, try the next filter up the chain */
303  ret = 0;
304  idx--;
305  continue;
306  } else if (ret < 0 && ret != AVERROR_EOF) {
307  return ret;
308  }
309 
310  /* got a packet or EOF -- pass it to the caller or to the next filter
311  * down the chain */
312  if (idx == s->nb_bsfs - 1) {
313  return ret;
314  } else {
315  idx++;
316  ret = av_bsf_send_packet(s->bsfs[idx], ret < 0 ? NULL : pkt);
317  if (ret < 0) {
318  av_log(avctx, AV_LOG_ERROR,
319  "Error pre-processing a packet before decoding\n");
320  av_packet_unref(pkt);
321  return ret;
322  }
323  }
324  }
325 
326  return AVERROR(EAGAIN);
327 }
328 
330 {
331  AVCodecInternal *avci = avctx->internal;
332  int ret;
333 
334  if (avci->draining)
335  return AVERROR_EOF;
336 
337  ret = bsfs_poll(avctx, pkt);
338  if (ret == AVERROR_EOF)
339  avci->draining = 1;
340  if (ret < 0)
341  return ret;
342 
343  ret = extract_packet_props(avctx->internal, pkt);
344  if (ret < 0)
345  goto finish;
346 
347  ret = apply_param_change(avctx, pkt);
348  if (ret < 0)
349  goto finish;
350 
351  if (avctx->codec->receive_frame)
352  avci->compat_decode_consumed += pkt->size;
353 
354  return 0;
355 finish:
356  av_packet_unref(pkt);
357  return ret;
358 }
359 
360 /**
361  * Attempt to guess proper monotonic timestamps for decoded video frames
362  * which might have incorrect times. Input timestamps may wrap around, in
363  * which case the output will as well.
364  *
365  * @param pts the pts field of the decoded AVPacket, as passed through
366  * AVFrame.pts
367  * @param dts the dts field of the decoded AVPacket
368  * @return one of the input values, may be AV_NOPTS_VALUE
369  */
371  int64_t reordered_pts, int64_t dts)
372 {
373  int64_t pts = AV_NOPTS_VALUE;
374 
375  if (dts != AV_NOPTS_VALUE) {
377  ctx->pts_correction_last_dts = dts;
378  } else if (reordered_pts != AV_NOPTS_VALUE)
379  ctx->pts_correction_last_dts = reordered_pts;
380 
381  if (reordered_pts != AV_NOPTS_VALUE) {
382  ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
383  ctx->pts_correction_last_pts = reordered_pts;
384  } else if(dts != AV_NOPTS_VALUE)
385  ctx->pts_correction_last_pts = dts;
386 
388  && reordered_pts != AV_NOPTS_VALUE)
389  pts = reordered_pts;
390  else
391  pts = dts;
392 
393  return pts;
394 }
395 
396 /*
397  * The core of the receive_frame_wrapper for the decoders implementing
398  * the simple API. Certain decoders might consume partial packets without
399  * returning any output, so this function needs to be called in a loop until it
400  * returns EAGAIN.
401  **/
403 {
404  AVCodecInternal *avci = avctx->internal;
405  DecodeSimpleContext *ds = &avci->ds;
406  AVPacket *pkt = ds->in_pkt;
407  // copy to ensure we do not change pkt
408  int got_frame, actual_got_frame;
409  int ret;
410 
411  if (!pkt->data && !avci->draining) {
412  av_packet_unref(pkt);
413  ret = ff_decode_get_packet(avctx, pkt);
414  if (ret < 0 && ret != AVERROR_EOF)
415  return ret;
416  }
417 
418  // Some codecs (at least wma lossless) will crash when feeding drain packets
419  // after EOF was signaled.
420  if (avci->draining_done)
421  return AVERROR_EOF;
422 
423  if (!pkt->data &&
424  !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY ||
426  return AVERROR_EOF;
427 
428  got_frame = 0;
429 
430  if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME) {
431  ret = ff_thread_decode_frame(avctx, frame, &got_frame, pkt);
432  } else {
433  ret = avctx->codec->decode(avctx, frame, &got_frame, pkt);
434 
436  frame->pkt_dts = pkt->dts;
437  if (avctx->codec->type == AVMEDIA_TYPE_VIDEO) {
438  if(!avctx->has_b_frames)
439  frame->pkt_pos = pkt->pos;
440  //FIXME these should be under if(!avctx->has_b_frames)
441  /* get_buffer is supposed to set frame parameters */
442  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DR1)) {
443  if (!frame->sample_aspect_ratio.num) frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
444  if (!frame->width) frame->width = avctx->width;
445  if (!frame->height) frame->height = avctx->height;
446  if (frame->format == AV_PIX_FMT_NONE) frame->format = avctx->pix_fmt;
447  }
448  }
449  }
450  emms_c();
451  actual_got_frame = got_frame;
452 
453  if (avctx->codec->type == AVMEDIA_TYPE_VIDEO) {
454  if (frame->flags & AV_FRAME_FLAG_DISCARD)
455  got_frame = 0;
456  if (got_frame)
458  frame->pts,
459  frame->pkt_dts);
460  } else if (avctx->codec->type == AVMEDIA_TYPE_AUDIO) {
461  uint8_t *side;
462  int side_size;
463  uint32_t discard_padding = 0;
464  uint8_t skip_reason = 0;
465  uint8_t discard_reason = 0;
466 
467  if (ret >= 0 && got_frame) {
469  frame->pts,
470  frame->pkt_dts);
471  if (frame->format == AV_SAMPLE_FMT_NONE)
472  frame->format = avctx->sample_fmt;
473  if (!frame->channel_layout)
474  frame->channel_layout = avctx->channel_layout;
475  if (!frame->channels)
476  frame->channels = avctx->channels;
477  if (!frame->sample_rate)
478  frame->sample_rate = avctx->sample_rate;
479  }
480 
482  if(side && side_size>=10) {
484  discard_padding = AV_RL32(side + 4);
485  av_log(avctx, AV_LOG_DEBUG, "skip %d / discard %d samples due to side data\n",
486  avctx->internal->skip_samples, (int)discard_padding);
487  skip_reason = AV_RL8(side + 8);
488  discard_reason = AV_RL8(side + 9);
489  }
490 
491  if ((frame->flags & AV_FRAME_FLAG_DISCARD) && got_frame &&
492  !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
493  avctx->internal->skip_samples = FFMAX(0, avctx->internal->skip_samples - frame->nb_samples);
494  got_frame = 0;
495  }
496 
497  if (avctx->internal->skip_samples > 0 && got_frame &&
498  !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
499  if(frame->nb_samples <= avctx->internal->skip_samples){
500  got_frame = 0;
501  avctx->internal->skip_samples -= frame->nb_samples;
502  av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
503  avctx->internal->skip_samples);
504  } else {
506  frame->nb_samples - avctx->internal->skip_samples, avctx->channels, frame->format);
507  if(avctx->pkt_timebase.num && avctx->sample_rate) {
508  int64_t diff_ts = av_rescale_q(avctx->internal->skip_samples,
509  (AVRational){1, avctx->sample_rate},
510  avctx->pkt_timebase);
511  if(frame->pts!=AV_NOPTS_VALUE)
512  frame->pts += diff_ts;
513 #if FF_API_PKT_PTS
515  if(frame->pkt_pts!=AV_NOPTS_VALUE)
516  frame->pkt_pts += diff_ts;
518 #endif
519  if(frame->pkt_dts!=AV_NOPTS_VALUE)
520  frame->pkt_dts += diff_ts;
521  if (frame->pkt_duration >= diff_ts)
522  frame->pkt_duration -= diff_ts;
523  } else {
524  av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
525  }
526  av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
527  avctx->internal->skip_samples, frame->nb_samples);
528  frame->nb_samples -= avctx->internal->skip_samples;
529  avctx->internal->skip_samples = 0;
530  }
531  }
532 
533  if (discard_padding > 0 && discard_padding <= frame->nb_samples && got_frame &&
534  !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
535  if (discard_padding == frame->nb_samples) {
536  got_frame = 0;
537  } else {
538  if(avctx->pkt_timebase.num && avctx->sample_rate) {
539  int64_t diff_ts = av_rescale_q(frame->nb_samples - discard_padding,
540  (AVRational){1, avctx->sample_rate},
541  avctx->pkt_timebase);
542  frame->pkt_duration = diff_ts;
543  } else {
544  av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for discarded samples.\n");
545  }
546  av_log(avctx, AV_LOG_DEBUG, "discard %d/%d samples\n",
547  (int)discard_padding, frame->nb_samples);
548  frame->nb_samples -= discard_padding;
549  }
550  }
551 
552  if ((avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL) && got_frame) {
554  if (fside) {
555  AV_WL32(fside->data, avctx->internal->skip_samples);
556  AV_WL32(fside->data + 4, discard_padding);
557  AV_WL8(fside->data + 8, skip_reason);
558  AV_WL8(fside->data + 9, discard_reason);
559  avctx->internal->skip_samples = 0;
560  }
561  }
562  }
563 
564  if (avctx->codec->type == AVMEDIA_TYPE_AUDIO &&
566  ret >= 0 && ret != pkt->size && !(avctx->codec->capabilities & AV_CODEC_CAP_SUBFRAMES)) {
567  av_log(avctx, AV_LOG_WARNING, "Multiple frames in a packet.\n");
568  avci->showed_multi_packet_warning = 1;
569  }
570 
571  if (!got_frame)
572  av_frame_unref(frame);
573 
574  if (ret >= 0 && avctx->codec->type == AVMEDIA_TYPE_VIDEO && !(avctx->flags & AV_CODEC_FLAG_TRUNCATED))
575  ret = pkt->size;
576 
577 #if FF_API_AVCTX_TIMEBASE
578  if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
579  avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
580 #endif
581 
582  /* do not stop draining when actual_got_frame != 0 or ret < 0 */
583  /* got_frame == 0 but actual_got_frame != 0 when frame is discarded */
584  if (avctx->internal->draining && !actual_got_frame) {
585  if (ret < 0) {
586  /* prevent infinite loop if a decoder wrongly always return error on draining */
587  /* reasonable nb_errors_max = maximum b frames + thread count */
588  int nb_errors_max = 20 + (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME ?
589  avctx->thread_count : 1);
590 
591  if (avci->nb_draining_errors++ >= nb_errors_max) {
592  av_log(avctx, AV_LOG_ERROR, "Too many errors when draining, this is a bug. "
593  "Stop draining and force EOF.\n");
594  avci->draining_done = 1;
595  ret = AVERROR_BUG;
596  }
597  } else {
598  avci->draining_done = 1;
599  }
600  }
601 
602  avci->compat_decode_consumed += ret;
603 
604  if (ret >= pkt->size || ret < 0) {
605  av_packet_unref(pkt);
606  } else {
607  int consumed = ret;
608 
609  pkt->data += consumed;
610  pkt->size -= consumed;
611  avci->last_pkt_props->size -= consumed; // See extract_packet_props() comment.
612  pkt->pts = AV_NOPTS_VALUE;
613  pkt->dts = AV_NOPTS_VALUE;
616  }
617 
618  if (got_frame)
619  av_assert0(frame->buf[0]);
620 
621  return ret < 0 ? ret : 0;
622 }
623 
625 {
626  int ret;
627 
628  while (!frame->buf[0]) {
629  ret = decode_simple_internal(avctx, frame);
630  if (ret < 0)
631  return ret;
632  }
633 
634  return 0;
635 }
636 
638 {
639  AVCodecInternal *avci = avctx->internal;
640  int ret;
641 
642  av_assert0(!frame->buf[0]);
643 
644  if (avctx->codec->receive_frame)
645  ret = avctx->codec->receive_frame(avctx, frame);
646  else
647  ret = decode_simple_receive_frame(avctx, frame);
648 
649  if (ret == AVERROR_EOF)
650  avci->draining_done = 1;
651 
652  if (!ret) {
653  /* the only case where decode data is not set should be decoders
654  * that do not call ff_get_buffer() */
655  av_assert0((frame->private_ref && frame->private_ref->size == sizeof(FrameDecodeData)) ||
656  !(avctx->codec->capabilities & AV_CODEC_CAP_DR1));
657 
658  if (frame->private_ref) {
660 
661  if (fdd->post_process) {
662  ret = fdd->post_process(avctx, frame);
663  if (ret < 0) {
664  av_frame_unref(frame);
665  return ret;
666  }
667  }
668  }
669  }
670 
671  /* free the per-frame decode data */
672  av_buffer_unref(&frame->private_ref);
673 
674  return ret;
675 }
676 
677 int attribute_align_arg avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt)
678 {
679  AVCodecInternal *avci = avctx->internal;
680  int ret;
681 
682  if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
683  return AVERROR(EINVAL);
684 
685  if (avctx->internal->draining)
686  return AVERROR_EOF;
687 
688  if (avpkt && !avpkt->size && avpkt->data)
689  return AVERROR(EINVAL);
690 
692  if (avpkt && (avpkt->data || avpkt->side_data_elems)) {
693  ret = av_packet_ref(avci->buffer_pkt, avpkt);
694  if (ret < 0)
695  return ret;
696  }
697 
698  ret = av_bsf_send_packet(avci->filter.bsfs[0], avci->buffer_pkt);
699  if (ret < 0) {
701  return ret;
702  }
703 
704  if (!avci->buffer_frame->buf[0]) {
705  ret = decode_receive_frame_internal(avctx, avci->buffer_frame);
706  if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
707  return ret;
708  }
709 
710  return 0;
711 }
712 
714 {
715  /* make sure we are noisy about decoders returning invalid cropping data */
716  if (frame->crop_left >= INT_MAX - frame->crop_right ||
717  frame->crop_top >= INT_MAX - frame->crop_bottom ||
718  (frame->crop_left + frame->crop_right) >= frame->width ||
719  (frame->crop_top + frame->crop_bottom) >= frame->height) {
720  av_log(avctx, AV_LOG_WARNING,
721  "Invalid cropping information set by a decoder: "
723  "(frame size %dx%d). This is a bug, please report it\n",
724  frame->crop_left, frame->crop_right, frame->crop_top, frame->crop_bottom,
725  frame->width, frame->height);
726  frame->crop_left = 0;
727  frame->crop_right = 0;
728  frame->crop_top = 0;
729  frame->crop_bottom = 0;
730  return 0;
731  }
732 
733  if (!avctx->apply_cropping)
734  return 0;
735 
736  return av_frame_apply_cropping(frame, avctx->flags & AV_CODEC_FLAG_UNALIGNED ?
738 }
739 
740 int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
741 {
742  AVCodecInternal *avci = avctx->internal;
743  int ret;
744 
745  av_frame_unref(frame);
746 
747  if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
748  return AVERROR(EINVAL);
749 
750  if (avci->buffer_frame->buf[0]) {
751  av_frame_move_ref(frame, avci->buffer_frame);
752  } else {
753  ret = decode_receive_frame_internal(avctx, frame);
754  if (ret < 0)
755  return ret;
756  }
757 
758  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
759  ret = apply_cropping(avctx, frame);
760  if (ret < 0) {
761  av_frame_unref(frame);
762  return ret;
763  }
764  }
765 
766  avctx->frame_number++;
767 
768  return 0;
769 }
770 
772  int *got_frame, const AVPacket *pkt)
773 {
774  AVCodecInternal *avci = avctx->internal;
775  int ret = 0;
776 
778 
779  if (avci->draining_done && pkt && pkt->size != 0) {
780  av_log(avctx, AV_LOG_WARNING, "Got unexpected packet after EOF\n");
781  avcodec_flush_buffers(avctx);
782  }
783 
784  *got_frame = 0;
785  avci->compat_decode = 1;
786 
787  if (avci->compat_decode_partial_size > 0 &&
788  avci->compat_decode_partial_size != pkt->size) {
789  av_log(avctx, AV_LOG_ERROR,
790  "Got unexpected packet size after a partial decode\n");
791  ret = AVERROR(EINVAL);
792  goto finish;
793  }
794 
795  if (!avci->compat_decode_partial_size) {
796  ret = avcodec_send_packet(avctx, pkt);
797  if (ret == AVERROR_EOF)
798  ret = 0;
799  else if (ret == AVERROR(EAGAIN)) {
800  /* we fully drain all the output in each decode call, so this should not
801  * ever happen */
802  ret = AVERROR_BUG;
803  goto finish;
804  } else if (ret < 0)
805  goto finish;
806  }
807 
808  while (ret >= 0) {
809  ret = avcodec_receive_frame(avctx, frame);
810  if (ret < 0) {
811  if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
812  ret = 0;
813  goto finish;
814  }
815 
816  if (frame != avci->compat_decode_frame) {
817  if (!avctx->refcounted_frames) {
818  ret = unrefcount_frame(avci, frame);
819  if (ret < 0)
820  goto finish;
821  }
822 
823  *got_frame = 1;
824  frame = avci->compat_decode_frame;
825  } else {
826  if (!avci->compat_decode_warned) {
827  av_log(avctx, AV_LOG_WARNING, "The deprecated avcodec_decode_* "
828  "API cannot return all the frames for this decoder. "
829  "Some frames will be dropped. Update your code to the "
830  "new decoding API to fix this.\n");
831  avci->compat_decode_warned = 1;
832  }
833  }
834 
835  if (avci->draining || (!avctx->codec->bsfs && avci->compat_decode_consumed < pkt->size))
836  break;
837  }
838 
839 finish:
840  if (ret == 0) {
841  /* if there are any bsfs then assume full packet is always consumed */
842  if (avctx->codec->bsfs)
843  ret = pkt->size;
844  else
845  ret = FFMIN(avci->compat_decode_consumed, pkt->size);
846  }
847  avci->compat_decode_consumed = 0;
848  avci->compat_decode_partial_size = (ret >= 0) ? pkt->size - ret : 0;
849 
850  return ret;
851 }
852 
853 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
854  int *got_picture_ptr,
855  const AVPacket *avpkt)
856 {
857  return compat_decode(avctx, picture, got_picture_ptr, avpkt);
858 }
859 
860 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
861  AVFrame *frame,
862  int *got_frame_ptr,
863  const AVPacket *avpkt)
864 {
865  return compat_decode(avctx, frame, got_frame_ptr, avpkt);
866 }
867 
869 {
870  memset(sub, 0, sizeof(*sub));
871  sub->pts = AV_NOPTS_VALUE;
872 }
873 
874 #define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
875 static int recode_subtitle(AVCodecContext *avctx,
876  AVPacket *outpkt, const AVPacket *inpkt)
877 {
878 #if CONFIG_ICONV
879  iconv_t cd = (iconv_t)-1;
880  int ret = 0;
881  char *inb, *outb;
882  size_t inl, outl;
883  AVPacket tmp;
884 #endif
885 
886  if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER || inpkt->size == 0)
887  return 0;
888 
889 #if CONFIG_ICONV
890  cd = iconv_open("UTF-8", avctx->sub_charenc);
891  av_assert0(cd != (iconv_t)-1);
892 
893  inb = inpkt->data;
894  inl = inpkt->size;
895 
896  if (inl >= INT_MAX / UTF8_MAX_BYTES - AV_INPUT_BUFFER_PADDING_SIZE) {
897  av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n");
898  ret = AVERROR(ENOMEM);
899  goto end;
900  }
901 
902  ret = av_new_packet(&tmp, inl * UTF8_MAX_BYTES);
903  if (ret < 0)
904  goto end;
905  outpkt->buf = tmp.buf;
906  outpkt->data = tmp.data;
907  outpkt->size = tmp.size;
908  outb = outpkt->data;
909  outl = outpkt->size;
910 
911  if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
912  iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
913  outl >= outpkt->size || inl != 0) {
914  ret = FFMIN(AVERROR(errno), -1);
915  av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
916  "from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
917  av_packet_unref(&tmp);
918  goto end;
919  }
920  outpkt->size -= outl;
921  memset(outpkt->data + outpkt->size, 0, outl);
922 
923 end:
924  if (cd != (iconv_t)-1)
925  iconv_close(cd);
926  return ret;
927 #else
928  av_log(avctx, AV_LOG_ERROR, "requesting subtitles recoding without iconv");
929  return AVERROR(EINVAL);
930 #endif
931 }
932 
933 static int utf8_check(const uint8_t *str)
934 {
935  const uint8_t *byte;
936  uint32_t codepoint, min;
937 
938  while (*str) {
939  byte = str;
940  GET_UTF8(codepoint, *(byte++), return 0;);
941  min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
942  1 << (5 * (byte - str) - 4);
943  if (codepoint < min || codepoint >= 0x110000 ||
944  codepoint == 0xFFFE /* BOM */ ||
945  codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
946  return 0;
947  str = byte;
948  }
949  return 1;
950 }
951 
952 #if FF_API_ASS_TIMING
953 static void insert_ts(AVBPrint *buf, int ts)
954 {
955  if (ts == -1) {
956  av_bprintf(buf, "9:59:59.99,");
957  } else {
958  int h, m, s;
959 
960  h = ts/360000; ts -= 360000*h;
961  m = ts/ 6000; ts -= 6000*m;
962  s = ts/ 100; ts -= 100*s;
963  av_bprintf(buf, "%d:%02d:%02d.%02d,", h, m, s, ts);
964  }
965 }
966 
968 {
969  int i;
970  AVBPrint buf;
971 
973 
974  for (i = 0; i < sub->num_rects; i++) {
975  char *final_dialog;
976  const char *dialog;
977  AVSubtitleRect *rect = sub->rects[i];
978  int ts_start, ts_duration = -1;
979  long int layer;
980 
981  if (rect->type != SUBTITLE_ASS || !strncmp(rect->ass, "Dialogue: ", 10))
982  continue;
983 
984  av_bprint_clear(&buf);
985 
986  /* skip ReadOrder */
987  dialog = strchr(rect->ass, ',');
988  if (!dialog)
989  continue;
990  dialog++;
991 
992  /* extract Layer or Marked */
993  layer = strtol(dialog, (char**)&dialog, 10);
994  if (*dialog != ',')
995  continue;
996  dialog++;
997 
998  /* rescale timing to ASS time base (ms) */
999  ts_start = av_rescale_q(pkt->pts, tb, av_make_q(1, 100));
1000  if (pkt->duration != -1)
1001  ts_duration = av_rescale_q(pkt->duration, tb, av_make_q(1, 100));
1002  sub->end_display_time = FFMAX(sub->end_display_time, 10 * ts_duration);
1003 
1004  /* construct ASS (standalone file form with timestamps) string */
1005  av_bprintf(&buf, "Dialogue: %ld,", layer);
1006  insert_ts(&buf, ts_start);
1007  insert_ts(&buf, ts_duration == -1 ? -1 : ts_start + ts_duration);
1008  av_bprintf(&buf, "%s\r\n", dialog);
1009 
1010  final_dialog = av_strdup(buf.str);
1011  if (!av_bprint_is_complete(&buf) || !final_dialog) {
1012  av_freep(&final_dialog);
1013  av_bprint_finalize(&buf, NULL);
1014  return AVERROR(ENOMEM);
1015  }
1016  av_freep(&rect->ass);
1017  rect->ass = final_dialog;
1018  }
1019 
1020  av_bprint_finalize(&buf, NULL);
1021  return 0;
1022 }
1023 #endif
1024 
1026  int *got_sub_ptr,
1027  AVPacket *avpkt)
1028 {
1029  int i, ret = 0;
1030 
1031  if (!avpkt->data && avpkt->size) {
1032  av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
1033  return AVERROR(EINVAL);
1034  }
1035  if (!avctx->codec)
1036  return AVERROR(EINVAL);
1037  if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
1038  av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
1039  return AVERROR(EINVAL);
1040  }
1041 
1042  *got_sub_ptr = 0;
1043  get_subtitle_defaults(sub);
1044 
1045  if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size) {
1046  AVPacket pkt_recoded = *avpkt;
1047 
1048  ret = recode_subtitle(avctx, &pkt_recoded, avpkt);
1049  if (ret < 0) {
1050  *got_sub_ptr = 0;
1051  } else {
1052  ret = extract_packet_props(avctx->internal, &pkt_recoded);
1053  if (ret < 0)
1054  return ret;
1055 
1056  if (avctx->pkt_timebase.num && avpkt->pts != AV_NOPTS_VALUE)
1057  sub->pts = av_rescale_q(avpkt->pts,
1058  avctx->pkt_timebase, AV_TIME_BASE_Q);
1059  ret = avctx->codec->decode(avctx, sub, got_sub_ptr, &pkt_recoded);
1060  av_assert1((ret >= 0) >= !!*got_sub_ptr &&
1061  !!*got_sub_ptr >= !!sub->num_rects);
1062 
1063 #if FF_API_ASS_TIMING
1065  && *got_sub_ptr && sub->num_rects) {
1066  const AVRational tb = avctx->pkt_timebase.num ? avctx->pkt_timebase
1067  : avctx->time_base;
1068  int err = convert_sub_to_old_ass_form(sub, avpkt, tb);
1069  if (err < 0)
1070  ret = err;
1071  }
1072 #endif
1073 
1074  if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
1075  avctx->pkt_timebase.num) {
1076  AVRational ms = { 1, 1000 };
1077  sub->end_display_time = av_rescale_q(avpkt->duration,
1078  avctx->pkt_timebase, ms);
1079  }
1080 
1082  sub->format = 0;
1083  else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB)
1084  sub->format = 1;
1085 
1086  for (i = 0; i < sub->num_rects; i++) {
1088  sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
1089  av_log(avctx, AV_LOG_ERROR,
1090  "Invalid UTF-8 in decoded subtitles text; "
1091  "maybe missing -sub_charenc option\n");
1092  avsubtitle_free(sub);
1093  ret = AVERROR_INVALIDDATA;
1094  break;
1095  }
1096  }
1097 
1098  if (avpkt->data != pkt_recoded.data) { // did we recode?
1099  /* prevent from destroying side data from original packet */
1100  pkt_recoded.side_data = NULL;
1101  pkt_recoded.side_data_elems = 0;
1102 
1103  av_packet_unref(&pkt_recoded);
1104  }
1105  }
1106 
1107  if (*got_sub_ptr)
1108  avctx->frame_number++;
1109  }
1110 
1111  return ret;
1112 }
1113 
1115  const enum AVPixelFormat *fmt)
1116 {
1117  const AVPixFmtDescriptor *desc;
1118  const AVCodecHWConfig *config;
1119  int i, n;
1120 
1121  // If a device was supplied when the codec was opened, assume that the
1122  // user wants to use it.
1123  if (avctx->hw_device_ctx && avctx->codec->hw_configs) {
1124  AVHWDeviceContext *device_ctx =
1126  for (i = 0;; i++) {
1127  config = &avctx->codec->hw_configs[i]->public;
1128  if (!config)
1129  break;
1130  if (!(config->methods &
1132  continue;
1133  if (device_ctx->type != config->device_type)
1134  continue;
1135  for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++) {
1136  if (config->pix_fmt == fmt[n])
1137  return fmt[n];
1138  }
1139  }
1140  }
1141  // No device or other setup, so we have to choose from things which
1142  // don't any other external information.
1143 
1144  // If the last element of the list is a software format, choose it
1145  // (this should be best software format if any exist).
1146  for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++);
1147  desc = av_pix_fmt_desc_get(fmt[n - 1]);
1148  if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
1149  return fmt[n - 1];
1150 
1151  // Finally, traverse the list in order and choose the first entry
1152  // with no external dependencies (if there is no hardware configuration
1153  // information available then this just picks the first entry).
1154  for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++) {
1155  for (i = 0;; i++) {
1156  config = avcodec_get_hw_config(avctx->codec, i);
1157  if (!config)
1158  break;
1159  if (config->pix_fmt == fmt[n])
1160  break;
1161  }
1162  if (!config) {
1163  // No specific config available, so the decoder must be able
1164  // to handle this format without any additional setup.
1165  return fmt[n];
1166  }
1168  // Usable with only internal setup.
1169  return fmt[n];
1170  }
1171  }
1172 
1173  // Nothing is usable, give up.
1174  return AV_PIX_FMT_NONE;
1175 }
1176 
1178  enum AVHWDeviceType dev_type)
1179 {
1180  AVHWDeviceContext *device_ctx;
1181  AVHWFramesContext *frames_ctx;
1182  int ret;
1183 
1184  if (!avctx->hwaccel)
1185  return AVERROR(ENOSYS);
1186 
1187  if (avctx->hw_frames_ctx)
1188  return 0;
1189  if (!avctx->hw_device_ctx) {
1190  av_log(avctx, AV_LOG_ERROR, "A hardware frames or device context is "
1191  "required for hardware accelerated decoding.\n");
1192  return AVERROR(EINVAL);
1193  }
1194 
1195  device_ctx = (AVHWDeviceContext *)avctx->hw_device_ctx->data;
1196  if (device_ctx->type != dev_type) {
1197  av_log(avctx, AV_LOG_ERROR, "Device type %s expected for hardware "
1198  "decoding, but got %s.\n", av_hwdevice_get_type_name(dev_type),
1199  av_hwdevice_get_type_name(device_ctx->type));
1200  return AVERROR(EINVAL);
1201  }
1202 
1204  avctx->hw_device_ctx,
1205  avctx->hwaccel->pix_fmt,
1206  &avctx->hw_frames_ctx);
1207  if (ret < 0)
1208  return ret;
1209 
1210  frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
1211 
1212 
1213  if (frames_ctx->initial_pool_size) {
1214  // We guarantee 4 base work surfaces. The function above guarantees 1
1215  // (the absolute minimum), so add the missing count.
1216  frames_ctx->initial_pool_size += 3;
1217  }
1218 
1219  ret = av_hwframe_ctx_init(avctx->hw_frames_ctx);
1220  if (ret < 0) {
1221  av_buffer_unref(&avctx->hw_frames_ctx);
1222  return ret;
1223  }
1224 
1225  return 0;
1226 }
1227 
1229  AVBufferRef *device_ref,
1231  AVBufferRef **out_frames_ref)
1232 {
1233  AVBufferRef *frames_ref = NULL;
1234  const AVCodecHWConfigInternal *hw_config;
1235  const AVHWAccel *hwa;
1236  int i, ret;
1237 
1238  for (i = 0;; i++) {
1239  hw_config = avctx->codec->hw_configs[i];
1240  if (!hw_config)
1241  return AVERROR(ENOENT);
1242  if (hw_config->public.pix_fmt == hw_pix_fmt)
1243  break;
1244  }
1245 
1246  hwa = hw_config->hwaccel;
1247  if (!hwa || !hwa->frame_params)
1248  return AVERROR(ENOENT);
1249 
1250  frames_ref = av_hwframe_ctx_alloc(device_ref);
1251  if (!frames_ref)
1252  return AVERROR(ENOMEM);
1253 
1254  ret = hwa->frame_params(avctx, frames_ref);
1255  if (ret >= 0) {
1256  AVHWFramesContext *frames_ctx = (AVHWFramesContext*)frames_ref->data;
1257 
1258  if (frames_ctx->initial_pool_size) {
1259  // If the user has requested that extra output surfaces be
1260  // available then add them here.
1261  if (avctx->extra_hw_frames > 0)
1262  frames_ctx->initial_pool_size += avctx->extra_hw_frames;
1263 
1264  // If frame threading is enabled then an extra surface per thread
1265  // is also required.
1266  if (avctx->active_thread_type & FF_THREAD_FRAME)
1267  frames_ctx->initial_pool_size += avctx->thread_count;
1268  }
1269 
1270  *out_frames_ref = frames_ref;
1271  } else {
1272  av_buffer_unref(&frames_ref);
1273  }
1274  return ret;
1275 }
1276 
1277 static int hwaccel_init(AVCodecContext *avctx,
1278  const AVCodecHWConfigInternal *hw_config)
1279 {
1280  const AVHWAccel *hwaccel;
1281  int err;
1282 
1283  hwaccel = hw_config->hwaccel;
1286  av_log(avctx, AV_LOG_WARNING, "Ignoring experimental hwaccel: %s\n",
1287  hwaccel->name);
1288  return AVERROR_PATCHWELCOME;
1289  }
1290 
1291  if (hwaccel->priv_data_size) {
1292  avctx->internal->hwaccel_priv_data =
1293  av_mallocz(hwaccel->priv_data_size);
1294  if (!avctx->internal->hwaccel_priv_data)
1295  return AVERROR(ENOMEM);
1296  }
1297 
1298  avctx->hwaccel = hwaccel;
1299  if (hwaccel->init) {
1300  err = hwaccel->init(avctx);
1301  if (err < 0) {
1302  av_log(avctx, AV_LOG_ERROR, "Failed setup for format %s: "
1303  "hwaccel initialisation returned error.\n",
1304  av_get_pix_fmt_name(hw_config->public.pix_fmt));
1306  avctx->hwaccel = NULL;
1307  return err;
1308  }
1309  }
1310 
1311  return 0;
1312 }
1313 
1314 static void hwaccel_uninit(AVCodecContext *avctx)
1315 {
1316  if (avctx->hwaccel && avctx->hwaccel->uninit)
1317  avctx->hwaccel->uninit(avctx);
1318 
1320 
1321  avctx->hwaccel = NULL;
1322 
1323  av_buffer_unref(&avctx->hw_frames_ctx);
1324 }
1325 
1327 {
1328  const AVPixFmtDescriptor *desc;
1329  enum AVPixelFormat *choices;
1330  enum AVPixelFormat ret, user_choice;
1331  const AVCodecHWConfigInternal *hw_config;
1332  const AVCodecHWConfig *config;
1333  int i, n, err;
1334 
1335  // Find end of list.
1336  for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++);
1337  // Must contain at least one entry.
1338  av_assert0(n >= 1);
1339  // If a software format is available, it must be the last entry.
1340  desc = av_pix_fmt_desc_get(fmt[n - 1]);
1341  if (desc->flags & AV_PIX_FMT_FLAG_HWACCEL) {
1342  // No software format is available.
1343  } else {
1344  avctx->sw_pix_fmt = fmt[n - 1];
1345  }
1346 
1347  choices = av_malloc_array(n + 1, sizeof(*choices));
1348  if (!choices)
1349  return AV_PIX_FMT_NONE;
1350 
1351  memcpy(choices, fmt, (n + 1) * sizeof(*choices));
1352 
1353  for (;;) {
1354  // Remove the previous hwaccel, if there was one.
1355  hwaccel_uninit(avctx);
1356 
1357  user_choice = avctx->get_format(avctx, choices);
1358  if (user_choice == AV_PIX_FMT_NONE) {
1359  // Explicitly chose nothing, give up.
1360  ret = AV_PIX_FMT_NONE;
1361  break;
1362  }
1363 
1364  desc = av_pix_fmt_desc_get(user_choice);
1365  if (!desc) {
1366  av_log(avctx, AV_LOG_ERROR, "Invalid format returned by "
1367  "get_format() callback.\n");
1368  ret = AV_PIX_FMT_NONE;
1369  break;
1370  }
1371  av_log(avctx, AV_LOG_DEBUG, "Format %s chosen by get_format().\n",
1372  desc->name);
1373 
1374  for (i = 0; i < n; i++) {
1375  if (choices[i] == user_choice)
1376  break;
1377  }
1378  if (i == n) {
1379  av_log(avctx, AV_LOG_ERROR, "Invalid return from get_format(): "
1380  "%s not in possible list.\n", desc->name);
1381  ret = AV_PIX_FMT_NONE;
1382  break;
1383  }
1384 
1385  if (avctx->codec->hw_configs) {
1386  for (i = 0;; i++) {
1387  hw_config = avctx->codec->hw_configs[i];
1388  if (!hw_config)
1389  break;
1390  if (hw_config->public.pix_fmt == user_choice)
1391  break;
1392  }
1393  } else {
1394  hw_config = NULL;
1395  }
1396 
1397  if (!hw_config) {
1398  // No config available, so no extra setup required.
1399  ret = user_choice;
1400  break;
1401  }
1402  config = &hw_config->public;
1403 
1404  if (config->methods &
1406  avctx->hw_frames_ctx) {
1407  const AVHWFramesContext *frames_ctx =
1409  if (frames_ctx->format != user_choice) {
1410  av_log(avctx, AV_LOG_ERROR, "Invalid setup for format %s: "
1411  "does not match the format of the provided frames "
1412  "context.\n", desc->name);
1413  goto try_again;
1414  }
1415  } else if (config->methods &
1417  avctx->hw_device_ctx) {
1418  const AVHWDeviceContext *device_ctx =
1420  if (device_ctx->type != config->device_type) {
1421  av_log(avctx, AV_LOG_ERROR, "Invalid setup for format %s: "
1422  "does not match the type of the provided device "
1423  "context.\n", desc->name);
1424  goto try_again;
1425  }
1426  } else if (config->methods &
1428  // Internal-only setup, no additional configuration.
1429  } else if (config->methods &
1431  // Some ad-hoc configuration we can't see and can't check.
1432  } else {
1433  av_log(avctx, AV_LOG_ERROR, "Invalid setup for format %s: "
1434  "missing configuration.\n", desc->name);
1435  goto try_again;
1436  }
1437  if (hw_config->hwaccel) {
1438  av_log(avctx, AV_LOG_DEBUG, "Format %s requires hwaccel "
1439  "initialisation.\n", desc->name);
1440  err = hwaccel_init(avctx, hw_config);
1441  if (err < 0)
1442  goto try_again;
1443  }
1444  ret = user_choice;
1445  break;
1446 
1447  try_again:
1448  av_log(avctx, AV_LOG_DEBUG, "Format %s not usable, retrying "
1449  "get_format() without it.\n", desc->name);
1450  for (i = 0; i < n; i++) {
1451  if (choices[i] == user_choice)
1452  break;
1453  }
1454  for (; i + 1 < n; i++)
1455  choices[i] = choices[i + 1];
1456  --n;
1457  }
1458 
1459  av_freep(&choices);
1460  return ret;
1461 }
1462 
1464 {
1465  FramePool *pool = avctx->internal->pool;
1466  int i, ret;
1467 
1468  switch (avctx->codec_type) {
1469  case AVMEDIA_TYPE_VIDEO: {
1470  uint8_t *data[4];
1471  int linesize[4];
1472  int size[4] = { 0 };
1473  int w = frame->width;
1474  int h = frame->height;
1475  int tmpsize, unaligned;
1476 
1477  if (pool->format == frame->format &&
1478  pool->width == frame->width && pool->height == frame->height)
1479  return 0;
1480 
1481  avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
1482 
1483  do {
1484  // NOTE: do not align linesizes individually, this breaks e.g. assumptions
1485  // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
1486  ret = av_image_fill_linesizes(linesize, avctx->pix_fmt, w);
1487  if (ret < 0)
1488  return ret;
1489  // increase alignment of w for next try (rhs gives the lowest bit set in w)
1490  w += w & ~(w - 1);
1491 
1492  unaligned = 0;
1493  for (i = 0; i < 4; i++)
1494  unaligned |= linesize[i] % pool->stride_align[i];
1495  } while (unaligned);
1496 
1497  tmpsize = av_image_fill_pointers(data, avctx->pix_fmt, h,
1498  NULL, linesize);
1499  if (tmpsize < 0)
1500  return tmpsize;
1501 
1502  for (i = 0; i < 3 && data[i + 1]; i++)
1503  size[i] = data[i + 1] - data[i];
1504  size[i] = tmpsize - (data[i] - data[0]);
1505 
1506  for (i = 0; i < 4; i++) {
1507  av_buffer_pool_uninit(&pool->pools[i]);
1508  pool->linesize[i] = linesize[i];
1509  if (size[i]) {
1510  pool->pools[i] = av_buffer_pool_init(size[i] + 16 + STRIDE_ALIGN - 1,
1511  CONFIG_MEMORY_POISONING ?
1512  NULL :
1514  if (!pool->pools[i]) {
1515  ret = AVERROR(ENOMEM);
1516  goto fail;
1517  }
1518  }
1519  }
1520  pool->format = frame->format;
1521  pool->width = frame->width;
1522  pool->height = frame->height;
1523 
1524  break;
1525  }
1526  case AVMEDIA_TYPE_AUDIO: {
1527  int ch = frame->channels; //av_get_channel_layout_nb_channels(frame->channel_layout);
1528  int planar = av_sample_fmt_is_planar(frame->format);
1529  int planes = planar ? ch : 1;
1530 
1531  if (pool->format == frame->format && pool->planes == planes &&
1532  pool->channels == ch && frame->nb_samples == pool->samples)
1533  return 0;
1534 
1535  av_buffer_pool_uninit(&pool->pools[0]);
1536  ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
1537  frame->nb_samples, frame->format, 0);
1538  if (ret < 0)
1539  goto fail;
1540 
1541  pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
1542  if (!pool->pools[0]) {
1543  ret = AVERROR(ENOMEM);
1544  goto fail;
1545  }
1546 
1547  pool->format = frame->format;
1548  pool->planes = planes;
1549  pool->channels = ch;
1550  pool->samples = frame->nb_samples;
1551  break;
1552  }
1553  default: av_assert0(0);
1554  }
1555  return 0;
1556 fail:
1557  for (i = 0; i < 4; i++)
1558  av_buffer_pool_uninit(&pool->pools[i]);
1559  pool->format = -1;
1560  pool->planes = pool->channels = pool->samples = 0;
1561  pool->width = pool->height = 0;
1562  return ret;
1563 }
1564 
1566 {
1567  FramePool *pool = avctx->internal->pool;
1568  int planes = pool->planes;
1569  int i;
1570 
1571  frame->linesize[0] = pool->linesize[0];
1572 
1573  if (planes > AV_NUM_DATA_POINTERS) {
1574  frame->extended_data = av_mallocz_array(planes, sizeof(*frame->extended_data));
1575  frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
1577  sizeof(*frame->extended_buf));
1578  if (!frame->extended_data || !frame->extended_buf) {
1579  av_freep(&frame->extended_data);
1580  av_freep(&frame->extended_buf);
1581  return AVERROR(ENOMEM);
1582  }
1583  } else {
1584  frame->extended_data = frame->data;
1585  av_assert0(frame->nb_extended_buf == 0);
1586  }
1587 
1588  for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
1589  frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
1590  if (!frame->buf[i])
1591  goto fail;
1592  frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
1593  }
1594  for (i = 0; i < frame->nb_extended_buf; i++) {
1595  frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
1596  if (!frame->extended_buf[i])
1597  goto fail;
1598  frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
1599  }
1600 
1601  if (avctx->debug & FF_DEBUG_BUFFERS)
1602  av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
1603 
1604  return 0;
1605 fail:
1606  av_frame_unref(frame);
1607  return AVERROR(ENOMEM);
1608 }
1609 
1611 {
1612  FramePool *pool = s->internal->pool;
1614  int i;
1615 
1616  if (pic->data[0] || pic->data[1] || pic->data[2] || pic->data[3]) {
1617  av_log(s, AV_LOG_ERROR, "pic->data[*]!=NULL in avcodec_default_get_buffer\n");
1618  return -1;
1619  }
1620 
1621  if (!desc) {
1622  av_log(s, AV_LOG_ERROR,
1623  "Unable to get pixel format descriptor for format %s\n",
1624  av_get_pix_fmt_name(pic->format));
1625  return AVERROR(EINVAL);
1626  }
1627 
1628  memset(pic->data, 0, sizeof(pic->data));
1629  pic->extended_data = pic->data;
1630 
1631  for (i = 0; i < 4 && pool->pools[i]; i++) {
1632  pic->linesize[i] = pool->linesize[i];
1633 
1634  pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
1635  if (!pic->buf[i])
1636  goto fail;
1637 
1638  pic->data[i] = pic->buf[i]->data;
1639  }
1640  for (; i < AV_NUM_DATA_POINTERS; i++) {
1641  pic->data[i] = NULL;
1642  pic->linesize[i] = 0;
1643  }
1644  if (desc->flags & AV_PIX_FMT_FLAG_PAL ||
1645  ((desc->flags & FF_PSEUDOPAL) && pic->data[1]))
1646  avpriv_set_systematic_pal2((uint32_t *)pic->data[1], pic->format);
1647 
1648  if (s->debug & FF_DEBUG_BUFFERS)
1649  av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
1650 
1651  return 0;
1652 fail:
1653  av_frame_unref(pic);
1654  return AVERROR(ENOMEM);
1655 }
1656 
1658 {
1659  int ret;
1660 
1661  if (avctx->hw_frames_ctx) {
1662  ret = av_hwframe_get_buffer(avctx->hw_frames_ctx, frame, 0);
1663  frame->width = avctx->coded_width;
1664  frame->height = avctx->coded_height;
1665  return ret;
1666  }
1667 
1668  if ((ret = update_frame_pool(avctx, frame)) < 0)
1669  return ret;
1670 
1671  switch (avctx->codec_type) {
1672  case AVMEDIA_TYPE_VIDEO:
1673  return video_get_buffer(avctx, frame);
1674  case AVMEDIA_TYPE_AUDIO:
1675  return audio_get_buffer(avctx, frame);
1676  default:
1677  return -1;
1678  }
1679 }
1680 
1682 {
1683  int size;
1684  const uint8_t *side_metadata;
1685 
1686  AVDictionary **frame_md = &frame->metadata;
1687 
1688  side_metadata = av_packet_get_side_data(avpkt,
1690  return av_packet_unpack_dictionary(side_metadata, size, frame_md);
1691 }
1692 
1694 {
1695  const AVPacket *pkt = avctx->internal->last_pkt_props;
1696  int i;
1697  static const struct {
1698  enum AVPacketSideDataType packet;
1700  } sd[] = {
1709  };
1710 
1711  if (pkt) {
1712  frame->pts = pkt->pts;
1713 #if FF_API_PKT_PTS
1715  frame->pkt_pts = pkt->pts;
1717 #endif
1718  frame->pkt_pos = pkt->pos;
1719  frame->pkt_duration = pkt->duration;
1720  frame->pkt_size = pkt->size;
1721 
1722  for (i = 0; i < FF_ARRAY_ELEMS(sd); i++) {
1723  int size;
1724  uint8_t *packet_sd = av_packet_get_side_data(pkt, sd[i].packet, &size);
1725  if (packet_sd) {
1726  AVFrameSideData *frame_sd = av_frame_new_side_data(frame,
1727  sd[i].frame,
1728  size);
1729  if (!frame_sd)
1730  return AVERROR(ENOMEM);
1731 
1732  memcpy(frame_sd->data, packet_sd, size);
1733  }
1734  }
1735  add_metadata_from_side_data(pkt, frame);
1736 
1737  if (pkt->flags & AV_PKT_FLAG_DISCARD) {
1738  frame->flags |= AV_FRAME_FLAG_DISCARD;
1739  } else {
1740  frame->flags = (frame->flags & ~AV_FRAME_FLAG_DISCARD);
1741  }
1742  }
1743  frame->reordered_opaque = avctx->reordered_opaque;
1744 
1745  if (frame->color_primaries == AVCOL_PRI_UNSPECIFIED)
1746  frame->color_primaries = avctx->color_primaries;
1747  if (frame->color_trc == AVCOL_TRC_UNSPECIFIED)
1748  frame->color_trc = avctx->color_trc;
1749  if (frame->colorspace == AVCOL_SPC_UNSPECIFIED)
1750  frame->colorspace = avctx->colorspace;
1751  if (frame->color_range == AVCOL_RANGE_UNSPECIFIED)
1752  frame->color_range = avctx->color_range;
1754  frame->chroma_location = avctx->chroma_sample_location;
1755 
1756  switch (avctx->codec->type) {
1757  case AVMEDIA_TYPE_VIDEO:
1758  frame->format = avctx->pix_fmt;
1759  if (!frame->sample_aspect_ratio.num)
1760  frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
1761 
1762  if (frame->width && frame->height &&
1763  av_image_check_sar(frame->width, frame->height,
1764  frame->sample_aspect_ratio) < 0) {
1765  av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
1766  frame->sample_aspect_ratio.num,
1767  frame->sample_aspect_ratio.den);
1768  frame->sample_aspect_ratio = (AVRational){ 0, 1 };
1769  }
1770 
1771  break;
1772  case AVMEDIA_TYPE_AUDIO:
1773  if (!frame->sample_rate)
1774  frame->sample_rate = avctx->sample_rate;
1775  if (frame->format < 0)
1776  frame->format = avctx->sample_fmt;
1777  if (!frame->channel_layout) {
1778  if (avctx->channel_layout) {
1780  avctx->channels) {
1781  av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
1782  "configuration.\n");
1783  return AVERROR(EINVAL);
1784  }
1785 
1786  frame->channel_layout = avctx->channel_layout;
1787  } else {
1788  if (avctx->channels > FF_SANE_NB_CHANNELS) {
1789  av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
1790  avctx->channels);
1791  return AVERROR(ENOSYS);
1792  }
1793  }
1794  }
1795  frame->channels = avctx->channels;
1796  break;
1797  }
1798  return 0;
1799 }
1800 
1802 {
1803  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1804  int i;
1805  int num_planes = av_pix_fmt_count_planes(frame->format);
1807  int flags = desc ? desc->flags : 0;
1808  if (num_planes == 1 && (flags & AV_PIX_FMT_FLAG_PAL))
1809  num_planes = 2;
1810  if ((flags & FF_PSEUDOPAL) && frame->data[1])
1811  num_planes = 2;
1812  for (i = 0; i < num_planes; i++) {
1813  av_assert0(frame->data[i]);
1814  }
1815  // For formats without data like hwaccel allow unused pointers to be non-NULL.
1816  for (i = num_planes; num_planes > 0 && i < FF_ARRAY_ELEMS(frame->data); i++) {
1817  if (frame->data[i])
1818  av_log(avctx, AV_LOG_ERROR, "Buffer returned by get_buffer2() did not zero unused plane pointers\n");
1819  frame->data[i] = NULL;
1820  }
1821  }
1822 }
1823 
1824 static void decode_data_free(void *opaque, uint8_t *data)
1825 {
1826  FrameDecodeData *fdd = (FrameDecodeData*)data;
1827 
1828  if (fdd->post_process_opaque_free)
1830 
1831  if (fdd->hwaccel_priv_free)
1832  fdd->hwaccel_priv_free(fdd->hwaccel_priv);
1833 
1834  av_freep(&fdd);
1835 }
1836 
1838 {
1839  AVBufferRef *fdd_buf;
1840  FrameDecodeData *fdd;
1841 
1842  av_assert1(!frame->private_ref);
1843  av_buffer_unref(&frame->private_ref);
1844 
1845  fdd = av_mallocz(sizeof(*fdd));
1846  if (!fdd)
1847  return AVERROR(ENOMEM);
1848 
1849  fdd_buf = av_buffer_create((uint8_t*)fdd, sizeof(*fdd), decode_data_free,
1851  if (!fdd_buf) {
1852  av_freep(&fdd);
1853  return AVERROR(ENOMEM);
1854  }
1855 
1856  frame->private_ref = fdd_buf;
1857 
1858  return 0;
1859 }
1860 
1862 {
1863  const AVHWAccel *hwaccel = avctx->hwaccel;
1864  int override_dimensions = 1;
1865  int ret;
1866 
1867  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1868  if ((ret = av_image_check_size2(FFALIGN(avctx->width, STRIDE_ALIGN), avctx->height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx)) < 0 || avctx->pix_fmt<0) {
1869  av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
1870  return AVERROR(EINVAL);
1871  }
1872 
1873  if (frame->width <= 0 || frame->height <= 0) {
1874  frame->width = FFMAX(avctx->width, AV_CEIL_RSHIFT(avctx->coded_width, avctx->lowres));
1875  frame->height = FFMAX(avctx->height, AV_CEIL_RSHIFT(avctx->coded_height, avctx->lowres));
1876  override_dimensions = 0;
1877  }
1878 
1879  if (frame->data[0] || frame->data[1] || frame->data[2] || frame->data[3]) {
1880  av_log(avctx, AV_LOG_ERROR, "pic->data[*]!=NULL in get_buffer_internal\n");
1881  return AVERROR(EINVAL);
1882  }
1883  }
1884  ret = ff_decode_frame_props(avctx, frame);
1885  if (ret < 0)
1886  return ret;
1887 
1888  if (hwaccel) {
1889  if (hwaccel->alloc_frame) {
1890  ret = hwaccel->alloc_frame(avctx, frame);
1891  goto end;
1892  }
1893  } else
1894  avctx->sw_pix_fmt = avctx->pix_fmt;
1895 
1896  ret = avctx->get_buffer2(avctx, frame, flags);
1897  if (ret < 0)
1898  goto end;
1899 
1900  validate_avframe_allocation(avctx, frame);
1901 
1902  ret = ff_attach_decode_data(frame);
1903  if (ret < 0)
1904  goto end;
1905 
1906 end:
1907  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions &&
1909  frame->width = avctx->width;
1910  frame->height = avctx->height;
1911  }
1912 
1913  if (ret < 0)
1914  av_frame_unref(frame);
1915 
1916  return ret;
1917 }
1918 
1920 {
1921  int ret = get_buffer_internal(avctx, frame, flags);
1922  if (ret < 0) {
1923  av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
1924  frame->width = frame->height = 0;
1925  }
1926  return ret;
1927 }
1928 
1930 {
1931  AVFrame *tmp;
1932  int ret;
1933 
1935 
1936  if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
1937  av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
1938  frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt));
1939  av_frame_unref(frame);
1940  }
1941 
1942  if (!frame->data[0])
1943  return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1944 
1945  if (av_frame_is_writable(frame))
1946  return ff_decode_frame_props(avctx, frame);
1947 
1948  tmp = av_frame_alloc();
1949  if (!tmp)
1950  return AVERROR(ENOMEM);
1951 
1952  av_frame_move_ref(tmp, frame);
1953 
1954  ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1955  if (ret < 0) {
1956  av_frame_free(&tmp);
1957  return ret;
1958  }
1959 
1960  av_frame_copy(frame, tmp);
1961  av_frame_free(&tmp);
1962 
1963  return 0;
1964 }
1965 
1967 {
1968  int ret = reget_buffer_internal(avctx, frame);
1969  if (ret < 0)
1970  av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
1971  return ret;
1972 }
1973 
1974 static void bsfs_flush(AVCodecContext *avctx)
1975 {
1976  DecodeFilterContext *s = &avctx->internal->filter;
1977 
1978  for (int i = 0; i < s->nb_bsfs; i++)
1979  av_bsf_flush(s->bsfs[i]);
1980 }
1981 
1983 {
1984  avctx->internal->draining = 0;
1985  avctx->internal->draining_done = 0;
1986  avctx->internal->nb_draining_errors = 0;
1990  avctx->internal->buffer_pkt_valid = 0;
1991 
1992  av_packet_unref(avctx->internal->ds.in_pkt);
1993 
1994  if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
1995  ff_thread_flush(avctx);
1996  else if (avctx->codec->flush)
1997  avctx->codec->flush(avctx);
1998 
1999  avctx->pts_correction_last_pts =
2000  avctx->pts_correction_last_dts = INT64_MIN;
2001 
2002  bsfs_flush(avctx);
2003 
2004  if (!avctx->refcounted_frames)
2005  av_frame_unref(avctx->internal->to_free);
2006 }
2007 
2009 {
2010  DecodeFilterContext *s = &avctx->internal->filter;
2011  int i;
2012 
2013  for (i = 0; i < s->nb_bsfs; i++)
2014  av_bsf_free(&s->bsfs[i]);
2015  av_freep(&s->bsfs);
2016  s->nb_bsfs = 0;
2017 }
#define AV_PIX_FMT_FLAG_PAL
Pixel format has a palette in data[1], values are indexes in this palette.
Definition: pixdesc.h:132
#define FF_SANE_NB_CHANNELS
Definition: internal.h:86
This struct aggregates all the (hardware/vendor-specific) "high-level" state, i.e.
Definition: hwcontext.h:60
#define FF_COMPLIANCE_EXPERIMENTAL
Allow nonstandardized experimental things.
Definition: avcodec.h:2620
enum AVPixelFormat(* get_format)(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
callback to negotiate the pixelFormat
Definition: avcodec.h:1808
AVCodecHWConfig public
This is the structure which will be returned to the user by avcodec_get_hw_config().
Definition: hwaccel.h:34
int nb_draining_errors
Definition: internal.h:220
#define FF_SUB_CHARENC_MODE_PRE_DECODER
the AVPacket data needs to be recoded to UTF-8 before being fed to the decoder, requires iconv ...
Definition: avcodec.h:3150
void av_bsf_free(AVBSFContext **ctx)
Free a bitstream filter context and everything associated with it; write NULL into the supplied point...
Definition: bsf.c:35
#define NULL
Definition: coverity.c:32
int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
Select the (possibly hardware accelerated) pixel format.
Definition: decode.c:1326
const struct AVCodec * codec
Definition: avcodec.h:1565
AVRational framerate
Definition: avcodec.h:3092
const char const char void * val
Definition: avisynth_c.h:771
Apply the maximum possible cropping, even if it requires setting the AVFrame.data[] entries to unalig...
Definition: frame.h:912
const AVCodecDescriptor * codec_descriptor
AVCodecDescriptor.
Definition: avcodec.h:3113
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
const AVClass * priv_class
A class for the private data, used to declare bitstream filter private AVOptions. ...
Definition: avcodec.h:5815
#define AV_NUM_DATA_POINTERS
Definition: frame.h:269
AVCodecParameters * par_out
Parameters of the output stream.
Definition: avcodec.h:5781
void av_bprintf(AVBPrint *buf, const char *fmt,...)
Definition: bprint.c:94
AVPacketSideDataType
Definition: avcodec.h:1175
int64_t pts_correction_num_faulty_dts
Number of incorrect PTS values so far.
Definition: avcodec.h:3130
void av_buffer_unref(AVBufferRef **buf)
Free a given reference and automatically free the buffer if there are no more references to it...
Definition: buffer.c:125
#define GET_UTF8(val, GET_BYTE, ERROR)
Convert a UTF-8 character (up to 4 bytes) to its 32-bit UCS-4 encoded form.
Definition: common.h:385
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2498
This structure describes decoded (raw) audio or video data.
Definition: frame.h:268
int stride_align[AV_NUM_DATA_POINTERS]
Definition: internal.h:112
AVOption.
Definition: opt.h:246
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
This side data must be associated with an audio frame and corresponds to enum AVAudioServiceType defi...
Definition: frame.h:113
int apply_cropping
Video decoding only.
Definition: avcodec.h:3337
static int decode_receive_frame_internal(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:637
const struct AVCodecHWConfigInternal ** hw_configs
Array of pointers to hardware configurations supported by the codec, or NULL if no hardware supported...
Definition: avcodec.h:3609
The codec supports this format by some internal method.
Definition: avcodec.h:3430
#define AV_CODEC_FLAG2_SKIP_MANUAL
Do not skip samples and export skip information as frame side data.
Definition: avcodec.h:950
int coded_width
Bitstream width / height, may be different from width/height e.g.
Definition: avcodec.h:1744
int64_t pkt_pos
reordered pos from the last AVPacket that has been input into the decoder
Definition: frame.h:539
int capabilities
Hardware accelerated codec capabilities.
Definition: avcodec.h:3669
const char * fmt
Definition: avisynth_c.h:769
AVPacket * last_pkt_props
Properties (timestamps+side data) extracted from the last packet passed for decoding.
Definition: internal.h:172
misc image utilities
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
static int convert_sub_to_old_ass_form(AVSubtitle *sub, const AVPacket *pkt, AVRational tb)
Definition: decode.c:967
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2538
AVFrame * to_free
Definition: internal.h:159
int64_t pos
byte position in stream, -1 if unknown
Definition: avcodec.h:1488
static void get_subtitle_defaults(AVSubtitle *sub)
Definition: decode.c:868
int ff_set_dimensions(AVCodecContext *s, int width, int height)
Check that the provided frame dimensions are valid and set them on the codec context.
Definition: utils.c:104
AVBufferRef * buf[AV_NUM_DATA_POINTERS]
AVBuffer references backing the data for this frame.
Definition: frame.h:459
static int decode_simple_receive_frame(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:624
const char * desc
Definition: nvenc.c:68
int width
Definition: internal.h:111
This side data should be associated with a video stream and contains Stereoscopic 3D information in f...
Definition: avcodec.h:1249
ATSC A53 Part 4 Closed Captions.
Definition: avcodec.h:1377
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition: avcodec.h:2187
int nb_extended_buf
Number of elements in extended_buf.
Definition: frame.h:477
int ff_decode_bsfs_init(AVCodecContext *avctx)
Definition: decode.c:185
Content light level (based on CTA-861.3).
Definition: frame.h:136
int num
Numerator.
Definition: rational.h:59
The bitstream filter state.
Definition: avcodec.h:5747
int size
Definition: avcodec.h:1469
uint8_t pi<< 24) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_U8,(uint64_t)((*(const uint8_t *) pi-0x80U))<< 56) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8,(*(const uint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8,(*(const uint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16,(*(const int16_t *) pi >>8)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S16,(uint64_t)(*(const int16_t *) pi)<< 48) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16,*(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16,*(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32,(*(const int32_t *) pi >>24)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S32,(uint64_t)(*(const int32_t *) pi)<< 32) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32,*(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32,*(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S64,(*(const int64_t *) pi >>56)+0x80) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S64,*(const int64_t *) pi *(1.0f/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S64,*(const int64_t *) pi *(1.0/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_FLT, llrintf(*(const float *) pi *(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_DBL, llrint(*(const double *) pi *(INT64_C(1)<< 63)))#define FMT_PAIR_FUNC(out, in) static conv_func_type *const fmt_pair_to_conv_functions[AV_SAMPLE_FMT_NB *AV_SAMPLE_FMT_NB]={FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S64),};static void cpy1(uint8_t **dst, const uint8_t **src, int len){memcpy(*dst,*src, len);}static void cpy2(uint8_t **dst, const uint8_t **src, int len){memcpy(*dst,*src, 2 *len);}static void cpy4(uint8_t **dst, const uint8_t **src, int len){memcpy(*dst,*src, 4 *len);}static void cpy8(uint8_t **dst, const uint8_t **src, int len){memcpy(*dst,*src, 8 *len);}AudioConvert *swri_audio_convert_alloc(enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, const int *ch_map, int flags){AudioConvert *ctx;conv_func_type *f=fmt_pair_to_conv_functions[av_get_packed_sample_fmt(out_fmt)+AV_SAMPLE_FMT_NB *av_get_packed_sample_fmt(in_fmt)];if(!f) return NULL;ctx=av_mallocz(sizeof(*ctx));if(!ctx) return NULL;if(channels==1){in_fmt=av_get_planar_sample_fmt(in_fmt);out_fmt=av_get_planar_sample_fmt(out_fmt);}ctx->channels=channels;ctx->conv_f=f;ctx->ch_map=ch_map;if(in_fmt==AV_SAMPLE_FMT_U8||in_fmt==AV_SAMPLE_FMT_U8P) memset(ctx->silence, 0x80, sizeof(ctx->silence));if(out_fmt==in_fmt &&!ch_map){switch(av_get_bytes_per_sample(in_fmt)){case 1:ctx->simd_f=cpy1;break;case 2:ctx->simd_f=cpy2;break;case 4:ctx->simd_f=cpy4;break;case 8:ctx->simd_f=cpy8;break;}}if(HAVE_X86ASM &&1) swri_audio_convert_init_x86(ctx, out_fmt, in_fmt, channels);if(ARCH_ARM) swri_audio_convert_init_arm(ctx, out_fmt, in_fmt, channels);if(ARCH_AARCH64) swri_audio_convert_init_aarch64(ctx, out_fmt, in_fmt, channels);return ctx;}void swri_audio_convert_free(AudioConvert **ctx){av_freep(ctx);}int swri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, int len){int ch;int off=0;const int os=(out->planar?1:out->ch_count)*out->bps;unsigned misaligned=0;av_assert0(ctx->channels==out->ch_count);if(ctx->in_simd_align_mask){int planes=in->planar?in->ch_count:1;unsigned m=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) in->ch[ch];misaligned|=m &ctx->in_simd_align_mask;}if(ctx->out_simd_align_mask){int planes=out->planar?out->ch_count:1;unsigned m=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) out->ch[ch];misaligned|=m &ctx->out_simd_align_mask;}if(ctx->simd_f &&!ctx->ch_map &&!misaligned){off=len &~15;av_assert1(off >=0);av_assert1(off<=len);av_assert2(ctx->channels==SWR_CH_MAX||!in->ch[ctx->channels]);if(off >0){if(out->planar==in->planar){int planes=out->planar?out->ch_count:1;for(ch=0;ch< planes;ch++){ctx->simd_f(out-> ch ch
Definition: audioconvert.c:56
const AVBitStreamFilter * av_bsf_get_by_name(const char *name)
enum AVPixelFormat pix_fmt
Supported pixel format.
Definition: avcodec.h:3663
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown) That is the width of a pixel divided by the height of the pixel...
Definition: avcodec.h:1935
void(* hwaccel_priv_free)(void *priv)
Definition: decode.h:53
#define AV_CODEC_PROP_TEXT_SUB
Subtitle codec is text based.
Definition: avcodec.h:776
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1766
int samples
Definition: internal.h:116
static int decode_simple_internal(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:402
int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx, AVFrame *frame, int *got_frame_ptr, const AVPacket *avpkt)
Decode the audio frame of size avpkt->size from avpkt->data into frame.
Definition: decode.c:860
enum AVPixelFormat format
The pixel format identifying the underlying HW surface type.
Definition: hwcontext.h:208
Mastering display metadata associated with a video frame.
Definition: frame.h:119
unsigned num_rects
Definition: avcodec.h:3924
void av_frame_move_ref(AVFrame *dst, AVFrame *src)
Move everything contained in src to dst and reset src.
Definition: frame.c:582
static void bsfs_flush(AVCodecContext *avctx)
Definition: decode.c:1974
enum AVMediaType type
Definition: avcodec.h:3481
static int apply_param_change(AVCodecContext *avctx, const AVPacket *avpkt)
Definition: decode.c:48
static int get_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
Definition: decode.c:1861
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:236
static int recode_subtitle(AVCodecContext *avctx, AVPacket *outpkt, const AVPacket *inpkt)
Definition: decode.c:875
AVBufferPool * pools[4]
Pools for each data plane.
Definition: internal.h:105
int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
Set various frame properties from the codec context / packet data.
Definition: decode.c:1693
size_t crop_bottom
Definition: frame.h:627
static AVPacket pkt
int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub, int *got_sub_ptr, AVPacket *avpkt)
Decode a subtitle message.
Definition: decode.c:1025
const struct AVHWAccel * hwaccel
Hardware accelerator in use.
Definition: avcodec.h:2716
void * priv_data
Opaque filter-specific private data.
Definition: avcodec.h:5768
int(* alloc_frame)(AVCodecContext *avctx, AVFrame *frame)
Allocate a custom buffer.
Definition: avcodec.h:3682
static int utf8_check(const uint8_t *str)
Definition: decode.c:933
int av_bsf_init(AVBSFContext *ctx)
Prepare the filter for use, after all the parameters and options have been set.
Definition: bsf.c:134
int av_bprint_finalize(AVBPrint *buf, char **ret_str)
Finalize a print buffer.
Definition: bprint.c:235
int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
Identical in function to av_frame_make_writable(), except it uses ff_get_buffer() to allocate the buf...
Definition: decode.c:1966
static int apply_cropping(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:713
void ff_decode_bsfs_uninit(AVCodecContext *avctx)
Definition: decode.c:2008
Mastering display metadata (based on SMPTE-2086:2014).
Definition: avcodec.h:1357
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avcodec.h:1679
int av_get_channel_layout_nb_channels(uint64_t channel_layout)
Return the number of channels in the channel layout.
AVSubtitleRect ** rects
Definition: avcodec.h:3925
int av_codec_is_decoder(const AVCodec *codec)
Definition: utils.c:99
int(* uninit)(AVCodecContext *avctx)
Uninitialize the hwaccel private data.
Definition: avcodec.h:3774
int av_bsf_alloc(const AVBitStreamFilter *filter, AVBSFContext **ctx)
Allocate a context for a given bitstream filter.
Definition: bsf.c:81
int av_opt_set_from_string(void *ctx, const char *opts, const char *const *shorthand, const char *key_val_sep, const char *pairs_sep)
Parse the key-value pairs list in opts.
Definition: opt.c:1506
#define AV_CODEC_CAP_DELAY
Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...
Definition: avcodec.h:997
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
const char * name
Definition: opt.h:247
int av_bsf_receive_packet(AVBSFContext *ctx, AVPacket *pkt)
Retrieve a filtered packet.
Definition: bsf.c:211
DecodeFilterContext filter
Definition: internal.h:166
int height
Definition: internal.h:111
enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *avctx, const enum AVPixelFormat *fmt)
Definition: decode.c:1114
enum AVSampleFormat sample_fmt
audio sample format
Definition: avcodec.h:2220
uint8_t
#define av_malloc(s)
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:189
int ff_attach_decode_data(AVFrame *frame)
Definition: decode.c:1837
int av_packet_unpack_dictionary(const uint8_t *data, int size, AVDictionary **dict)
Unpack a dictionary from side_data.
Definition: avpacket.c:523
AVOptions.
static int64_t guess_correct_pts(AVCodecContext *ctx, int64_t reordered_pts, int64_t dts)
Attempt to guess proper monotonic timestamps for decoded video frames which might have incorrect time...
Definition: decode.c:370
size_t crop_left
Definition: frame.h:628
int avpriv_set_systematic_pal2(uint32_t pal[256], enum AVPixelFormat pix_fmt)
Definition: imgutils.c:152
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: avcodec.h:1486
This side data contains a 3x3 transformation matrix describing an affine transformation that needs to...
Definition: avcodec.h:1243
#define AV_CODEC_FLAG_UNALIGNED
Allow decoders to produce frames with data planes that are not aligned to CPU requirements (e...
Definition: avcodec.h:842
#define AV_WL8(p, d)
Definition: intreadwrite.h:399
Multithreading support functions.
AVBufferRef * private_ref
AVBufferRef for internal use by a single libav* library.
Definition: frame.h:645
int ff_decode_get_packet(AVCodecContext *avctx, AVPacket *pkt)
Called by decoders to get the next packet for decoding.
Definition: decode.c:329
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:361
enum AVPixelFormat pix_fmt
A hardware pixel format which the codec can use.
Definition: avcodec.h:3446
int planes
Definition: internal.h:114
Structure to hold side data for an AVFrame.
Definition: frame.h:201
int av_image_check_sar(unsigned int w, unsigned int h, AVRational sar)
Check if the given sample aspect ratio of an image is valid.
Definition: imgutils.c:287
size_t compat_decode_consumed
Definition: internal.h:209
static void finish(void)
Definition: movenc.c:345
uint8_t * data
Definition: avcodec.h:1468
#define AVERROR_EOF
End of file.
Definition: error.h:55
AVDictionary * metadata
metadata.
Definition: frame.h:554
int lowres
low resolution decoding, 1-> 1/2 size, 2->1/4 size
Definition: avcodec.h:2791
#define AV_BUFFER_FLAG_READONLY
Always treat the buffer as read-only, even when it has only one reference.
Definition: buffer.h:113
int(* init)(AVCodecContext *avctx)
Initialize the hwaccel private data.
Definition: avcodec.h:3766
ptrdiff_t size
Definition: opengl_enc.c:101
The data represents the AVSphericalMapping structure defined in libavutil/spherical.h.
Definition: frame.h:130
void * av_realloc_array(void *ptr, size_t nmemb, size_t size)
Definition: mem.c:198
static int bsfs_poll(AVCodecContext *avctx, AVPacket *pkt)
Definition: decode.c:291
enum AVChromaLocation chroma_sample_location
This defines the location of chroma samples.
Definition: avcodec.h:2194
#define FFALIGN(x, a)
Definition: macros.h:48
The codec supports this format via the hw_device_ctx interface.
Definition: avcodec.h:3414
#define av_log(a,...)
const char * name
Definition: pixdesc.h:82
int av_packet_ref(AVPacket *dst, const AVPacket *src)
Setup a new reference to the data described by a given packet.
Definition: avpacket.c:607
int av_sample_fmt_is_planar(enum AVSampleFormat sample_fmt)
Check if the sample format is planar.
Definition: samplefmt.c:112
FramePool * pool
Definition: internal.h:161
void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, int linesize_align[AV_NUM_DATA_POINTERS])
Modify width and height values so that they will result in a memory buffer that is acceptable for the...
Definition: utils.c:154
int ff_thread_decode_frame(AVCodecContext *avctx, AVFrame *picture, int *got_picture_ptr, AVPacket *avpkt)
Submit a new frame to a decoding thread.
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
Definition: mathematics.c:142
#define AV_RL8(x)
Definition: intreadwrite.h:398
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
Definition: avpacket.c:86
AVRational pkt_timebase
Timebase in which pkt_dts/pts and AVPacket.dts/pts are.
Definition: avcodec.h:3106
int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
Copy the contents of src to dst.
Definition: utils.c:2013
int width
Definition: frame.h:326
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int has_b_frames
Size of the frame reordering buffer in the decoder.
Definition: avcodec.h:1846
void * post_process_opaque
Definition: decode.h:46
#define AV_BPRINT_SIZE_UNLIMITED
filter_frame For filters that do not use the this method is called when a frame is pushed to the filter s input It can be called at any time except in a reentrant way If the input frame is enough to produce then the filter should push the output frames on the output link immediately As an exception to the previous rule if the input frame is enough to produce several output frames then the filter needs output only at least one per link The additional frames can be left buffered in the filter
static int hwaccel_init(AVCodecContext *avctx, const AVCodecHWConfigInternal *hw_config)
Definition: decode.c:1277
static void validate_avframe_allocation(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:1801
An AV_PKT_DATA_PARAM_CHANGE side data packet is laid out as follows:
Definition: avcodec.h:1207
int av_frame_apply_cropping(AVFrame *frame, int flags)
Crop the given video AVFrame according to its crop_left/crop_top/crop_right/ crop_bottom fields...
Definition: frame.c:881
uint8_t * av_packet_get_side_data(const AVPacket *pkt, enum AVPacketSideDataType type, int *size)
Get side information from packet.
Definition: avpacket.c:350
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:202
int64_t pts_correction_last_pts
Number of incorrect DTS values so far.
Definition: avcodec.h:3131
int active_thread_type
Which multithreading methods are in use by the codec.
Definition: avcodec.h:2830
int methods
Bit set of AV_CODEC_HW_CONFIG_METHOD_* flags, describing the possible setup methods which can be used...
Definition: avcodec.h:3451
void av_bprint_init(AVBPrint *buf, unsigned size_init, unsigned size_max)
Definition: bprint.c:69
int avcodec_is_open(AVCodecContext *s)
Definition: utils.c:1871
int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
Return decoded output data from a decoder.
Definition: decode.c:740
static int extract_packet_props(AVCodecInternal *avci, const AVPacket *pkt)
Definition: decode.c:126
AVFrame * buffer_frame
Definition: internal.h:202
int capabilities
Codec capabilities.
Definition: avcodec.h:3487
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition: frame.h:512
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
ATSC A53 Part 4 Closed Captions.
Definition: frame.h:58
AVBufferRef * buf
A reference to the reference-counted buffer where the packet data is stored.
Definition: avcodec.h:1451
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1636
enum AVColorSpace colorspace
YUV colorspace type.
Definition: frame.h:523
AVRational time_base_in
The timebase used for the timestamps of the input packets.
Definition: avcodec.h:5787
#define AV_PIX_FMT_FLAG_HWACCEL
Pixel format is an HW accelerated format.
Definition: pixdesc.h:140
simple assert() macros that are a bit more flexible than ISO C assert().
const AVOption * av_opt_next(const void *obj, const AVOption *last)
Iterate over all AVOptions belonging to obj.
Definition: opt.c:45
int side_data_elems
Definition: avcodec.h:1480
AVBufferRef * av_buffer_create(uint8_t *data, int size, void(*free)(void *opaque, uint8_t *data), void *opaque, int flags)
Create an AVBuffer from an existing array.
Definition: buffer.c:28
int64_t max_pixels
The number of pixels per image to maximally accept.
Definition: avcodec.h:3279
int av_hwframe_ctx_init(AVBufferRef *ref)
Finalize the context before use.
Definition: hwcontext.c:329
static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:1929
enum AVHWDeviceType type
This field identifies the underlying API used for hardware access.
Definition: hwcontext.h:78
#define FFMAX(a, b)
Definition: common.h:94
int av_hwframe_get_buffer(AVBufferRef *hwframe_ref, AVFrame *frame, int flags)
Allocate a new frame attached to the given AVHWFramesContext.
Definition: hwcontext.c:465
#define fail()
Definition: checkasm.h:118
static const struct @305 planes[]
char * av_get_token(const char **buf, const char *term)
Unescape the given string until a non escaped terminating char, and return the token corresponding to...
Definition: avstring.c:149
int av_frame_copy(AVFrame *dst, const AVFrame *src)
Copy the frame data from src to dst.
Definition: frame.c:792
const AVHWAccel * hwaccel
If this configuration uses a hwaccel, a pointer to it.
Definition: hwaccel.h:39
#define FF_CODEC_CAP_EXPORTS_CROPPING
The decoder sets the cropping fields in the output frames manually.
Definition: internal.h:66
int priv_data_size
Size of the private data to allocate in AVCodecInternal.hwaccel_priv_data.
Definition: avcodec.h:3780
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1474
reference-counted frame API
uint64_t channel_layout
Audio channel layout.
Definition: avcodec.h:2263
uint32_t end_display_time
Definition: avcodec.h:3923
int64_t pts
Same as packet pts, in AV_TIME_BASE.
Definition: avcodec.h:3926
uint64_t channel_layout
Channel layout of the audio data.
Definition: frame.h:445
int props
Codec properties, a combination of AV_CODEC_PROP_* flags.
Definition: avcodec.h:728
size_t crop_top
Definition: frame.h:626
common internal API header
uint64_t flags
Combination of AV_PIX_FMT_FLAG_...
Definition: pixdesc.h:106
int initial_pool_size
Initial size of the frame pool.
Definition: hwcontext.h:198
int av_packet_copy_props(AVPacket *dst, const AVPacket *src)
Copy only "properties" fields from src to dst.
Definition: avpacket.c:564
int channels
number of audio channels, only used for audio.
Definition: frame.h:572
int flags
Frame flags, a combination of AV_FRAME_FLAGS.
Definition: frame.h:505
int err_recognition
Error recognition; may misdetect some more or less valid parts as errors.
Definition: avcodec.h:2681
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
#define FF_THREAD_FRAME
Decode more than one frame at once.
Definition: avcodec.h:2822
const char * name
Name of the hardware accelerated codec.
Definition: avcodec.h:3642
#define FFMIN(a, b)
Definition: common.h:96
AVBufferRef ** extended_buf
For planar audio which requires more than AV_NUM_DATA_POINTERS AVBufferRef pointers, this array will hold all the references which cannot fit into AVFrame.buf.
Definition: frame.h:473
int channels
Definition: internal.h:115
AVFrame * compat_decode_frame
Definition: internal.h:213
int width
picture width / height.
Definition: avcodec.h:1729
uint8_t w
Definition: llviddspenc.c:38
AVBufferRef * hw_frames_ctx
A reference to the AVHWFramesContext describing the input (for encoding) or output (decoding) frames...
Definition: avcodec.h:3249
static int add_metadata_from_side_data(const AVPacket *avpkt, AVFrame *frame)
Definition: decode.c:1681
AVRational time_base_out
The timebase used for the timestamps of the output packets.
Definition: avcodec.h:5793
static int compat_decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, const AVPacket *pkt)
Definition: decode.c:771
AVPacket * in_pkt
Definition: internal.h:120
This side data should be associated with a video stream and corresponds to the AVSphericalMapping str...
Definition: avcodec.h:1363
int av_bsf_send_packet(AVBSFContext *ctx, AVPacket *pkt)
Submit a packet for filtering.
Definition: bsf.c:185
AVFormatContext * ctx
Definition: movenc.c:48
enum AVColorPrimaries color_primaries
Chromaticity coordinates of the source primaries.
Definition: avcodec.h:2166
AVFrameSideDataType
Definition: frame.h:48
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
uint16_t format
Definition: avcodec.h:3921
#define s(width, name)
Definition: cbs_vp9.c:257
#define FF_DEBUG_BUFFERS
Definition: avcodec.h:2659
int64_t reordered_opaque
opaque 64-bit number (generally a PTS) that will be reordered and output in AVFrame.reordered_opaque
Definition: avcodec.h:2709
#define AV_EF_EXPLODE
abort decoding on minor error detection
Definition: avcodec.h:2692
int n
Definition: avisynth_c.h:684
static int av_bprint_is_complete(const AVBPrint *buf)
Test if the print buffer is complete (not truncated).
Definition: bprint.h:185
const char * bsfs
Decoding only, a comma-separated list of bitstream filters to apply to packets before decoding...
Definition: avcodec.h:3600
DecodeSimpleContext ds
Definition: internal.h:165
char * sub_charenc
DTS of the last frame.
Definition: avcodec.h:3139
static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:1565
int draining
checks API usage: after codec draining, flush is required to resume operation
Definition: internal.h:195
#define FF_ARRAY_ELEMS(a)
int thread_count
thread count is used to decide how many independent tasks should be passed to execute() ...
Definition: avcodec.h:2811
int linesize[4]
Definition: internal.h:113
int sub_charenc_mode
Subtitles character encoding mode.
Definition: avcodec.h:3147
if(ret)
void avcodec_flush_buffers(AVCodecContext *avctx)
Reset the internal decoder state / flush internal buffers.
Definition: decode.c:1982
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
int(* post_process)(void *logctx, AVFrame *frame)
The callback to perform some delayed processing on the frame right before it is returned to the calle...
Definition: decode.h:45
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames...
Definition: frame.h:341
Content light level (based on CTA-861.3).
Definition: avcodec.h:1370
int attribute_align_arg avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt)
Supply raw packet data as input to a decoder.
Definition: decode.c:677
void(* post_process_opaque_free)(void *opaque)
Definition: decode.h:47
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:251
int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
The default callback for AVCodecContext.get_buffer2().
Definition: decode.c:1657
int av_image_fill_pointers(uint8_t *data[4], enum AVPixelFormat pix_fmt, int height, uint8_t *ptr, const int linesizes[4])
Fill plane data pointers for an image with pixel format pix_fmt and height height.
Definition: imgutils.c:111
Libavcodec external API header.
enum AVMediaType codec_type
Definition: avcodec.h:1564
int compat_decode_warned
Definition: internal.h:206
int64_t pkt_duration
duration of the corresponding packet, expressed in AVStream->time_base units, 0 if unknown...
Definition: frame.h:547
A list of zero terminated key/value strings.
Definition: avcodec.h:1307
int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture, int *got_picture_ptr, const AVPacket *avpkt)
Decode the video frame of size avpkt->size from avpkt->data into picture.
Definition: decode.c:853
This side data contains a 3x3 transformation matrix describing an affine transformation that needs to...
Definition: frame.h:84
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
Definition: avutil.h:260
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
Definition: frame.c:594
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_WB24 unsigned int_TMPL AV_WB16 unsigned int_TMPL byte
Definition: bytestream.h:87
int sample_rate
samples per second
Definition: avcodec.h:2212
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:299
int debug
debug
Definition: avcodec.h:2637
static AVRational av_make_q(int num, int den)
Create an AVRational.
Definition: rational.h:71
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
const AVCodecHWConfig * avcodec_get_hw_config(const AVCodec *codec, int index)
Retrieve supported hardware configurations for a codec.
Definition: utils.c:1757
main external API structure.
Definition: avcodec.h:1556
int(* receive_frame)(AVCodecContext *avctx, AVFrame *frame)
Decode API with decoupled packet/frame dataflow.
Definition: avcodec.h:3584
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:598
int skip_samples_multiplier
Definition: internal.h:217
uint8_t * data
The data buffer.
Definition: buffer.h:89
void avsubtitle_free(AVSubtitle *sub)
Free all allocated data in the given subtitle struct.
Definition: utils.c:1054
AVRational sample_aspect_ratio
Sample aspect ratio for the video frame, 0/1 if unknown/unspecified.
Definition: frame.h:356
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: decode.c:1919
uint8_t * data
Definition: frame.h:203
#define AV_CODEC_PROP_BITMAP_SUB
Subtitle codec is bitmap based Decoded AVSubtitle data can be read from the AVSubtitleRect->pict fiel...
Definition: avcodec.h:771
int av_samples_copy(uint8_t **dst, uint8_t *const *src, int dst_offset, int src_offset, int nb_samples, int nb_channels, enum AVSampleFormat sample_fmt)
Copy samples from src to dst.
Definition: samplefmt.c:213
void * buf
Definition: avisynth_c.h:690
size_t crop_right
Definition: frame.h:629
AVBufferRef * av_buffer_allocz(int size)
Same as av_buffer_alloc(), except the returned buffer will be initialized to zero.
Definition: buffer.c:83
#define AVERROR_BUG
Internal bug, also see AVERROR_BUG2.
Definition: error.h:50
int coded_height
Definition: avcodec.h:1744
int64_t reordered_opaque
reordered opaque 64 bits (generally an integer or a double precision float PTS but can be anything)...
Definition: frame.h:435
int sample_rate
Sample rate of the audio data.
Definition: frame.h:440
int(* get_buffer2)(struct AVCodecContext *s, AVFrame *frame, int flags)
This callback is called at the beginning of each frame to get data buffer(s) for it.
Definition: avcodec.h:2367
int showed_multi_packet_warning
Definition: internal.h:215
Definition: f_ebur128.c:91
int av_image_fill_linesizes(int linesizes[4], enum AVPixelFormat pix_fmt, int width)
Fill plane linesizes for an image with pixel format pix_fmt and width width.
Definition: imgutils.c:89
AVFrameSideData * av_frame_new_side_data(AVFrame *frame, enum AVFrameSideDataType type, int size)
Add a new side data to a frame.
Definition: frame.c:722
const char * av_hwdevice_get_type_name(enum AVHWDeviceType type)
Get the string name of an AVHWDeviceType.
Definition: hwcontext.c:88
#define AV_CODEC_CAP_SUBFRAMES
Codec can output multiple frames per AVPacket Normally demuxers return one frame at a time...
Definition: avcodec.h:1015
void av_buffer_pool_uninit(AVBufferPool **ppool)
Mark the pool as being available for freeing.
Definition: buffer.c:275
int av_samples_get_buffer_size(int *linesize, int nb_channels, int nb_samples, enum AVSampleFormat sample_fmt, int align)
Get the required buffer size for the given audio parameters.
Definition: samplefmt.c:119
enum AVColorSpace colorspace
YUV colorspace type.
Definition: avcodec.h:2180
Rational number (pair of numerator and denominator).
Definition: rational.h:58
enum AVColorTransferCharacteristic color_trc
Color Transfer Characteristic.
Definition: avcodec.h:2173
int avcodec_parameters_from_context(AVCodecParameters *par, const AVCodecContext *codec)
Fill the parameters struct based on the values from the supplied codec context.
Definition: utils.c:2031
Recommmends skipping the specified number of samples.
Definition: avcodec.h:1291
This struct describes a set or pool of "hardware" frames (i.e.
Definition: hwcontext.h:123
int sub_text_format
Control the form of AVSubtitle.rects[N]->ass.
Definition: avcodec.h:3256
int buffer_pkt_valid
Definition: internal.h:201
int skip_samples
Number of audio samples to skip at the start of the next decoded frame.
Definition: internal.h:185
#define STRIDE_ALIGN
Definition: internal.h:97
enum AVChromaLocation chroma_location
Definition: frame.h:525
int(* frame_params)(AVCodecContext *avctx, AVBufferRef *hw_frames_ctx)
Fill the given hw_frames context with current codec parameters.
Definition: avcodec.h:3795
int64_t best_effort_timestamp
frame timestamp estimated using various heuristics, in stream time base
Definition: frame.h:532
attribute_deprecated int refcounted_frames
If non-zero, the decoded audio and video frames returned from avcodec_decode_video2() and avcodec_dec...
Definition: avcodec.h:2383
int size
Size of data in bytes.
Definition: buffer.h:93
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
Definition: frame.c:553
static int64_t pts
#define SIZE_SPECIFIER
Definition: internal.h:262
#define flags(name, subs,...)
Definition: cbs_av1.c:606
This side data should be associated with an audio stream and contains ReplayGain information in form ...
Definition: avcodec.h:1234
The codec supports this format via the hw_frames_ctx interface.
Definition: avcodec.h:3423
#define FF_CODEC_CAP_SETS_PKT_DTS
Decoders marked with FF_CODEC_CAP_SETS_PKT_DTS want to set AVFrame.pkt_dts manually.
Definition: internal.h:55
int ff_decode_get_hw_frames_ctx(AVCodecContext *avctx, enum AVHWDeviceType dev_type)
Make sure avctx.hw_frames_ctx is set.
Definition: decode.c:1177
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:282
static void decode_data_free(void *opaque, uint8_t *data)
Definition: decode.c:1824
#define UTF8_MAX_BYTES
Definition: decode.c:874
attribute_deprecated int64_t pkt_pts
PTS copied from the AVPacket that was decoded to produce this frame.
Definition: frame.h:369
void av_bprint_clear(AVBPrint *buf)
Reset the string to "" but keep internal allocated data.
Definition: bprint.c:227
char * av_strtok(char *s, const char *delim, char **saveptr)
Split the string into several tokens which can be accessed by successive calls to av_strtok()...
Definition: avstring.c:184
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
Definition: rational.h:159
AVPacket * buffer_pkt
buffers for using new encode/decode API through legacy API
Definition: internal.h:200
int64_t pkt_dts
DTS copied from the AVPacket that triggered returning this frame.
Definition: frame.h:377
A reference to a data buffer.
Definition: buffer.h:81
int extra_hw_frames
Definition: avcodec.h:3351
static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
Definition: decode.c:139
The codec supports this format by some ad-hoc method.
Definition: avcodec.h:3439
AVPacketSideData * side_data
Additional packet data that can be provided by the container.
Definition: avcodec.h:1479
This struct stores per-frame lavc-internal data and is attached to it via private_ref.
Definition: decode.h:34
int avcodec_get_hw_frames_parameters(AVCodecContext *avctx, AVBufferRef *device_ref, enum AVPixelFormat hw_pix_fmt, AVBufferRef **out_frames_ref)
Create and return a AVHWFramesContext with values adequate for hardware decoding. ...
Definition: decode.c:1228
static enum AVPixelFormat hw_pix_fmt
Definition: hw_decode.c:46
#define AV_PKT_FLAG_DISCARD
Flag is used to discard packets which are required to maintain valid decoder state but are not requir...
Definition: avcodec.h:1507
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:84
int(* decode)(AVCodecContext *, void *outdata, int *outdata_size, AVPacket *avpkt)
Definition: avcodec.h:3566
common internal api header.
common internal and external API header
AVBufferPool * av_buffer_pool_init(int size, AVBufferRef *(*alloc)(int size))
Allocate and initialize a buffer pool.
Definition: buffer.c:238
#define AV_HWACCEL_CODEC_CAP_EXPERIMENTAL
HWAccel is experimental and is thus avoided in favor of non experimental codecs.
Definition: avcodec.h:3802
#define AV_CODEC_CAP_PARAM_CHANGE
Codec supports changed parameters at any point.
Definition: avcodec.h:1036
void(* flush)(AVCodecContext *)
Flush buffers.
Definition: avcodec.h:3589
AVBufferRef * av_hwframe_ctx_alloc(AVBufferRef *device_ref_in)
Allocate an AVHWFramesContext tied to a given device context.
Definition: hwcontext.c:243
static void insert_ts(AVBPrint *buf, int ts)
Definition: decode.c:953
void * hwaccel_priv_data
hwaccel-specific private data
Definition: internal.h:190
int caps_internal
Internal codec capabilities.
Definition: avcodec.h:3594
int den
Denominator.
Definition: rational.h:60
int av_image_check_size2(unsigned int w, unsigned int h, int64_t max_pixels, enum AVPixelFormat pix_fmt, int log_offset, void *log_ctx)
Check if the given dimension of an image is valid, meaning that all bytes of a plane of an image with...
Definition: imgutils.c:253
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
Definition: avcodec.h:786
AVBSFContext ** bsfs
Definition: internal.h:125
static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
Definition: decode.c:1610
Formatted text, the ass field must be set by the decoder and is authoritative.
Definition: avcodec.h:3880
#define FF_PSEUDOPAL
Definition: internal.h:367
AVHWDeviceType
Definition: hwcontext.h:27
void ff_thread_flush(AVCodecContext *avctx)
Wait for decoding threads to finish and reset internal state.
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:85
int channels
number of audio channels
Definition: avcodec.h:2213
struct AVCodecInternal * internal
Private context used for internal data.
Definition: avcodec.h:1591
char * ass
0 terminated ASS/SSA compatible event line.
Definition: avcodec.h:3915
#define AV_FRAME_FLAG_DISCARD
A flag to mark the frames which need to be decoded, but shouldn&#39;t be output.
Definition: frame.h:497
int flags2
AV_CODEC_FLAG2_*.
Definition: avcodec.h:1643
enum AVColorPrimaries color_primaries
Definition: frame.h:514
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Definition: avcodec.h:1467
AVRational av_mul_q(AVRational b, AVRational c)
Multiply two rationals.
Definition: rational.c:80
int64_t pts_correction_last_dts
PTS of the last frame.
Definition: avcodec.h:3132
size_t compat_decode_partial_size
Definition: internal.h:212
#define AV_CODEC_FLAG_TRUNCATED
Input bitstream might be truncated at a random location instead of only at frame boundaries.
Definition: avcodec.h:883
int frame_number
Frame counter, set by libavcodec.
Definition: avcodec.h:2243
static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:1463
int height
Definition: frame.h:326
void av_bsf_flush(AVBSFContext *ctx)
Reset the internal bitstream filter state / flush internal buffers.
Definition: bsf.c:175
#define av_freep(p)
int64_t pts_correction_num_faulty_pts
Current statistics for PTS correction.
Definition: avcodec.h:3129
enum AVColorTransferCharacteristic color_trc
Definition: frame.h:516
AVBufferRef * av_buffer_pool_get(AVBufferPool *pool)
Allocate a new AVBuffer, reusing an old buffer from the pool when available.
Definition: buffer.c:334
Recommmends skipping the specified number of samples.
Definition: frame.h:108
void * hwaccel_priv
Per-frame private data for hwaccels.
Definition: decode.h:52
#define av_malloc_array(a, b)
enum AVHWDeviceType device_type
The device type associated with the configuration.
Definition: avcodec.h:3458
#define FF_SUB_TEXT_FMT_ASS_WITH_TIMINGS
Definition: avcodec.h:3259
#define FF_SUB_CHARENC_MODE_IGNORE
neither convert the subtitles, nor check them for valid UTF-8
Definition: avcodec.h:3151
const char * av_get_pix_fmt_name(enum AVPixelFormat pix_fmt)
Return the short name for a pixel format, NULL in case pix_fmt is unknown.
Definition: pixdesc.c:2414
ReplayGain information in the form of the AVReplayGain struct.
Definition: frame.h:76
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later.That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another.Frame references ownership and permissions
enum AVSubtitleType type
Definition: avcodec.h:3906
uint8_t ** extended_data
pointers to the data planes/channels.
Definition: frame.h:315
int format
Definition: internal.h:110
AVBufferRef * hw_device_ctx
A reference to the AVHWDeviceContext describing the device which will be used by a hardware encoder/d...
Definition: avcodec.h:3301
int pkt_size
size of the corresponding packet containing the compressed frame.
Definition: frame.h:581
float min
Stereoscopic 3d metadata.
Definition: frame.h:63
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:87
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
This structure stores compressed data.
Definition: avcodec.h:1445
AVCodecParameters * par_in
Parameters of the input stream.
Definition: avcodec.h:5775
#define AV_GET_BUFFER_FLAG_REF
The decoder will keep a reference to the frame and may reuse it later.
Definition: avcodec.h:1167
int nb_samples
number of audio samples (per channel) described by this frame
Definition: frame.h:334
int strict_std_compliance
strictly follow the standard (MPEG-4, ...).
Definition: avcodec.h:2615
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:972
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1461
enum AVPixelFormat sw_pix_fmt
Nominal unaccelerated pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:3099
for(j=16;j >0;--j)
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:654
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
static void hwaccel_uninit(AVCodecContext *avctx)
Definition: decode.c:1314
#define tb
Definition: regdef.h:68
#define AV_WL32(p, v)
Definition: intreadwrite.h:426
uint8_t pi<< 24) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_U8,(uint64_t)((*(const uint8_t *) pi-0x80U))<< 56) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8,(*(const uint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8,(*(const uint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16,(*(const int16_t *) pi >>8)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S16,(uint64_t)(*(const int16_t *) pi)<< 48) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16,*(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16,*(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32,(*(const int32_t *) pi >>24)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S32,(uint64_t)(*(const int32_t *) pi)<< 32) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32,*(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32,*(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S64,(*(const int64_t *) pi >>56)+0x80) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S64,*(const int64_t *) pi *(1.0f/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S64,*(const int64_t *) pi *(1.0/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_FLT, llrintf(*(const float *) pi *(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_DBL, llrint(*(const double *) pi *(INT64_C(1)<< 63)))#define FMT_PAIR_FUNC(out, in) static conv_func_type *const fmt_pair_to_conv_functions[AV_SAMPLE_FMT_NB *AV_SAMPLE_FMT_NB]={FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S64),};static void cpy1(uint8_t **dst, const uint8_t **src, int len){memcpy(*dst,*src, len);}static void cpy2(uint8_t **dst, const uint8_t **src, int len){memcpy(*dst,*src, 2 *len);}static void cpy4(uint8_t **dst, const uint8_t **src, int len){memcpy(*dst,*src, 4 *len);}static void cpy8(uint8_t **dst, const uint8_t **src, int len){memcpy(*dst,*src, 8 *len);}AudioConvert *swri_audio_convert_alloc(enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, const int *ch_map, int flags){AudioConvert *ctx;conv_func_type *f=fmt_pair_to_conv_functions[av_get_packed_sample_fmt(out_fmt)+AV_SAMPLE_FMT_NB *av_get_packed_sample_fmt(in_fmt)];if(!f) return NULL;ctx=av_mallocz(sizeof(*ctx));if(!ctx) return NULL;if(channels==1){in_fmt=av_get_planar_sample_fmt(in_fmt);out_fmt=av_get_planar_sample_fmt(out_fmt);}ctx->channels=channels;ctx->conv_f=f;ctx->ch_map=ch_map;if(in_fmt==AV_SAMPLE_FMT_U8||in_fmt==AV_SAMPLE_FMT_U8P) memset(ctx->silence, 0x80, sizeof(ctx->silence));if(out_fmt==in_fmt &&!ch_map){switch(av_get_bytes_per_sample(in_fmt)){case 1:ctx->simd_f=cpy1;break;case 2:ctx->simd_f=cpy2;break;case 4:ctx->simd_f=cpy4;break;case 8:ctx->simd_f=cpy8;break;}}if(HAVE_X86ASM &&1) swri_audio_convert_init_x86(ctx, out_fmt, in_fmt, channels);if(ARCH_ARM) swri_audio_convert_init_arm(ctx, out_fmt, in_fmt, channels);if(ARCH_AARCH64) swri_audio_convert_init_aarch64(ctx, out_fmt, in_fmt, channels);return ctx;}void swri_audio_convert_free(AudioConvert **ctx){av_freep(ctx);}int swri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, int len){int ch;int off=0;const int os=(out->planar?1:out->ch_count)*out->bps;unsigned misaligned=0;av_assert0(ctx->channels==out->ch_count);if(ctx->in_simd_align_mask){int planes=in->planar?in->ch_count:1;unsigned m=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) in->ch[ch];misaligned|=m &ctx->in_simd_align_mask;}if(ctx->out_simd_align_mask){int planes=out->planar?out->ch_count:1;unsigned m=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) out->ch[ch];misaligned|=m &ctx->out_simd_align_mask;}if(ctx->simd_f &&!ctx->ch_map &&!misaligned){off=len &~15;av_assert1(off >=0);av_assert1(off<=len);av_assert2(ctx->channels==SWR_CH_MAX||!in->ch[ctx->channels]);if(off >0){if(out->planar==in->planar){int planes=out->planar?out->ch_count:1;for(ch=0;ch< planes;ch++){ctx->simd_f(out-> ch const uint8_t **in ch off *out planar
Definition: audioconvert.c:56
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.c:191
This side data should be associated with an audio stream and corresponds to enum AVAudioServiceType.
Definition: avcodec.h:1255
static uint8_t tmp[11]
Definition: aes_ctr.c:26