FFmpeg  4.3.6
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 "hwconfig.h"
45 #include "internal.h"
46 #include "thread.h"
47 
48 typedef struct FramePool {
49  /**
50  * Pools for each data plane. For audio all the planes have the same size,
51  * so only pools[0] is used.
52  */
54 
55  /*
56  * Pool parameters
57  */
58  int format;
59  int width, height;
61  int linesize[4];
62  int planes;
63  int channels;
64  int samples;
65 } FramePool;
66 
67 static int apply_param_change(AVCodecContext *avctx, const AVPacket *avpkt)
68 {
69  int size = 0, ret;
70  const uint8_t *data;
71  uint32_t flags;
72  int64_t val;
73 
75  if (!data)
76  return 0;
77 
78  if (!(avctx->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE)) {
79  av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
80  "changes, but PARAM_CHANGE side data was sent to it.\n");
81  ret = AVERROR(EINVAL);
82  goto fail2;
83  }
84 
85  if (size < 4)
86  goto fail;
87 
88  flags = bytestream_get_le32(&data);
89  size -= 4;
90 
92  if (size < 4)
93  goto fail;
94  val = bytestream_get_le32(&data);
95  if (val <= 0 || val > INT_MAX) {
96  av_log(avctx, AV_LOG_ERROR, "Invalid channel count");
97  ret = AVERROR_INVALIDDATA;
98  goto fail2;
99  }
100  avctx->channels = val;
101  size -= 4;
102  }
104  if (size < 8)
105  goto fail;
106  avctx->channel_layout = bytestream_get_le64(&data);
107  size -= 8;
108  }
110  if (size < 4)
111  goto fail;
112  val = bytestream_get_le32(&data);
113  if (val <= 0 || val > INT_MAX) {
114  av_log(avctx, AV_LOG_ERROR, "Invalid sample rate");
115  ret = AVERROR_INVALIDDATA;
116  goto fail2;
117  }
118  avctx->sample_rate = val;
119  size -= 4;
120  }
122  if (size < 8)
123  goto fail;
124  avctx->width = bytestream_get_le32(&data);
125  avctx->height = bytestream_get_le32(&data);
126  size -= 8;
127  ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
128  if (ret < 0)
129  goto fail2;
130  }
131 
132  return 0;
133 fail:
134  av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
135  ret = AVERROR_INVALIDDATA;
136 fail2:
137  if (ret < 0) {
138  av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
139  if (avctx->err_recognition & AV_EF_EXPLODE)
140  return ret;
141  }
142  return 0;
143 }
144 
146 {
147  int ret = 0;
148 
150  if (pkt) {
151  ret = av_packet_copy_props(avci->last_pkt_props, pkt);
152  if (!ret)
153  avci->last_pkt_props->size = pkt->size; // HACK: Needed for ff_decode_frame_props().
154  }
155  return ret;
156 }
157 
159 {
160  int ret;
161 
162  /* move the original frame to our backup */
163  av_frame_unref(avci->to_free);
164  av_frame_move_ref(avci->to_free, frame);
165 
166  /* now copy everything except the AVBufferRefs back
167  * note that we make a COPY of the side data, so calling av_frame_free() on
168  * the caller's frame will work properly */
169  ret = av_frame_copy_props(frame, avci->to_free);
170  if (ret < 0)
171  return ret;
172 
173  memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
174  memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
175  if (avci->to_free->extended_data != avci->to_free->data) {
176  int planes = avci->to_free->channels;
177  int size = planes * sizeof(*frame->extended_data);
178 
179  if (!size) {
180  av_frame_unref(frame);
181  return AVERROR_BUG;
182  }
183 
184  frame->extended_data = av_malloc(size);
185  if (!frame->extended_data) {
186  av_frame_unref(frame);
187  return AVERROR(ENOMEM);
188  }
189  memcpy(frame->extended_data, avci->to_free->extended_data,
190  size);
191  } else
192  frame->extended_data = frame->data;
193 
194  frame->format = avci->to_free->format;
195  frame->width = avci->to_free->width;
196  frame->height = avci->to_free->height;
197  frame->channel_layout = avci->to_free->channel_layout;
198  frame->nb_samples = avci->to_free->nb_samples;
199  frame->channels = avci->to_free->channels;
200 
201  return 0;
202 }
203 
205 {
206  AVCodecInternal *avci = avctx->internal;
207  int ret;
208 
209  if (avci->bsf)
210  return 0;
211 
212  ret = av_bsf_list_parse_str(avctx->codec->bsfs, &avci->bsf);
213  if (ret < 0) {
214  av_log(avctx, AV_LOG_ERROR, "Error parsing decoder bitstream filters '%s': %s\n", avctx->codec->bsfs, av_err2str(ret));
215  if (ret != AVERROR(ENOMEM))
216  ret = AVERROR_BUG;
217  goto fail;
218  }
219 
220  /* We do not currently have an API for passing the input timebase into decoders,
221  * but no filters used here should actually need it.
222  * So we make up some plausible-looking number (the MPEG 90kHz timebase) */
223  avci->bsf->time_base_in = (AVRational){ 1, 90000 };
224  ret = avcodec_parameters_from_context(avci->bsf->par_in, avctx);
225  if (ret < 0)
226  goto fail;
227 
228  ret = av_bsf_init(avci->bsf);
229  if (ret < 0)
230  goto fail;
231 
232  return 0;
233 fail:
234  av_bsf_free(&avci->bsf);
235  return ret;
236 }
237 
239 {
240  AVCodecInternal *avci = avctx->internal;
241  int ret;
242 
243  if (avci->draining)
244  return AVERROR_EOF;
245 
246  ret = av_bsf_receive_packet(avci->bsf, pkt);
247  if (ret == AVERROR_EOF)
248  avci->draining = 1;
249  if (ret < 0)
250  return ret;
251 
252  ret = extract_packet_props(avctx->internal, pkt);
253  if (ret < 0)
254  goto finish;
255 
256  ret = apply_param_change(avctx, pkt);
257  if (ret < 0)
258  goto finish;
259 
260  if (avctx->codec->receive_frame)
261  avci->compat_decode_consumed += pkt->size;
262 
263  return 0;
264 finish:
265  av_packet_unref(pkt);
266  return ret;
267 }
268 
269 /**
270  * Attempt to guess proper monotonic timestamps for decoded video frames
271  * which might have incorrect times. Input timestamps may wrap around, in
272  * which case the output will as well.
273  *
274  * @param pts the pts field of the decoded AVPacket, as passed through
275  * AVFrame.pts
276  * @param dts the dts field of the decoded AVPacket
277  * @return one of the input values, may be AV_NOPTS_VALUE
278  */
280  int64_t reordered_pts, int64_t dts)
281 {
282  int64_t pts = AV_NOPTS_VALUE;
283 
284  if (dts != AV_NOPTS_VALUE) {
286  ctx->pts_correction_last_dts = dts;
287  } else if (reordered_pts != AV_NOPTS_VALUE)
288  ctx->pts_correction_last_dts = reordered_pts;
289 
290  if (reordered_pts != AV_NOPTS_VALUE) {
291  ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
292  ctx->pts_correction_last_pts = reordered_pts;
293  } else if(dts != AV_NOPTS_VALUE)
294  ctx->pts_correction_last_pts = dts;
295 
297  && reordered_pts != AV_NOPTS_VALUE)
298  pts = reordered_pts;
299  else
300  pts = dts;
301 
302  return pts;
303 }
304 
305 /*
306  * The core of the receive_frame_wrapper for the decoders implementing
307  * the simple API. Certain decoders might consume partial packets without
308  * returning any output, so this function needs to be called in a loop until it
309  * returns EAGAIN.
310  **/
312 {
313  AVCodecInternal *avci = avctx->internal;
314  DecodeSimpleContext *ds = &avci->ds;
315  AVPacket *pkt = ds->in_pkt;
316  // copy to ensure we do not change pkt
317  int got_frame, actual_got_frame;
318  int ret;
319 
320  if (!pkt->data && !avci->draining) {
321  av_packet_unref(pkt);
322  ret = ff_decode_get_packet(avctx, pkt);
323  if (ret < 0 && ret != AVERROR_EOF)
324  return ret;
325  }
326 
327  // Some codecs (at least wma lossless) will crash when feeding drain packets
328  // after EOF was signaled.
329  if (avci->draining_done)
330  return AVERROR_EOF;
331 
332  if (!pkt->data &&
333  !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY ||
335  return AVERROR_EOF;
336 
337  got_frame = 0;
338 
340  ret = ff_thread_decode_frame(avctx, frame, &got_frame, pkt);
341  } else {
342  ret = avctx->codec->decode(avctx, frame, &got_frame, pkt);
343 
345  frame->pkt_dts = pkt->dts;
346  if (avctx->codec->type == AVMEDIA_TYPE_VIDEO) {
347  if(!avctx->has_b_frames)
348  frame->pkt_pos = pkt->pos;
349  //FIXME these should be under if(!avctx->has_b_frames)
350  /* get_buffer is supposed to set frame parameters */
351  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DR1)) {
352  if (!frame->sample_aspect_ratio.num) frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
353  if (!frame->width) frame->width = avctx->width;
354  if (!frame->height) frame->height = avctx->height;
355  if (frame->format == AV_PIX_FMT_NONE) frame->format = avctx->pix_fmt;
356  }
357  }
358  }
359  emms_c();
360  actual_got_frame = got_frame;
361 
362  if (avctx->codec->type == AVMEDIA_TYPE_VIDEO) {
363  if (frame->flags & AV_FRAME_FLAG_DISCARD)
364  got_frame = 0;
365  if (got_frame)
367  frame->pts,
368  frame->pkt_dts);
369  } else if (avctx->codec->type == AVMEDIA_TYPE_AUDIO) {
370  uint8_t *side;
371  int side_size;
372  uint32_t discard_padding = 0;
373  uint8_t skip_reason = 0;
374  uint8_t discard_reason = 0;
375 
376  if (ret >= 0 && got_frame) {
378  frame->pts,
379  frame->pkt_dts);
380  if (frame->format == AV_SAMPLE_FMT_NONE)
381  frame->format = avctx->sample_fmt;
382  if (!frame->channel_layout)
383  frame->channel_layout = avctx->channel_layout;
384  if (!frame->channels)
385  frame->channels = avctx->channels;
386  if (!frame->sample_rate)
387  frame->sample_rate = avctx->sample_rate;
388  }
389 
391  if(side && side_size>=10) {
392  avci->skip_samples = AV_RL32(side) * avci->skip_samples_multiplier;
393  discard_padding = AV_RL32(side + 4);
394  av_log(avctx, AV_LOG_DEBUG, "skip %d / discard %d samples due to side data\n",
395  avci->skip_samples, (int)discard_padding);
396  skip_reason = AV_RL8(side + 8);
397  discard_reason = AV_RL8(side + 9);
398  }
399 
400  if ((frame->flags & AV_FRAME_FLAG_DISCARD) && got_frame &&
401  !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
402  avci->skip_samples = FFMAX(0, avci->skip_samples - frame->nb_samples);
403  got_frame = 0;
404  }
405 
406  if (avci->skip_samples > 0 && got_frame &&
407  !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
408  if(frame->nb_samples <= avci->skip_samples){
409  got_frame = 0;
410  avci->skip_samples -= frame->nb_samples;
411  av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
412  avci->skip_samples);
413  } else {
414  av_samples_copy(frame->extended_data, frame->extended_data, 0, avci->skip_samples,
415  frame->nb_samples - avci->skip_samples, avctx->channels, frame->format);
416  if(avctx->pkt_timebase.num && avctx->sample_rate) {
417  int64_t diff_ts = av_rescale_q(avci->skip_samples,
418  (AVRational){1, avctx->sample_rate},
419  avctx->pkt_timebase);
420  if(frame->pts!=AV_NOPTS_VALUE)
421  frame->pts += diff_ts;
422 #if FF_API_PKT_PTS
424  if(frame->pkt_pts!=AV_NOPTS_VALUE)
425  frame->pkt_pts += diff_ts;
427 #endif
428  if(frame->pkt_dts!=AV_NOPTS_VALUE)
429  frame->pkt_dts += diff_ts;
430  if (frame->pkt_duration >= diff_ts)
431  frame->pkt_duration -= diff_ts;
432  } else {
433  av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
434  }
435  av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
436  avci->skip_samples, frame->nb_samples);
437  frame->nb_samples -= avci->skip_samples;
438  avci->skip_samples = 0;
439  }
440  }
441 
442  if (discard_padding > 0 && discard_padding <= frame->nb_samples && got_frame &&
443  !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
444  if (discard_padding == frame->nb_samples) {
445  got_frame = 0;
446  } else {
447  if(avctx->pkt_timebase.num && avctx->sample_rate) {
448  int64_t diff_ts = av_rescale_q(frame->nb_samples - discard_padding,
449  (AVRational){1, avctx->sample_rate},
450  avctx->pkt_timebase);
451  frame->pkt_duration = diff_ts;
452  } else {
453  av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for discarded samples.\n");
454  }
455  av_log(avctx, AV_LOG_DEBUG, "discard %d/%d samples\n",
456  (int)discard_padding, frame->nb_samples);
457  frame->nb_samples -= discard_padding;
458  }
459  }
460 
461  if ((avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL) && got_frame) {
463  if (fside) {
464  AV_WL32(fside->data, avci->skip_samples);
465  AV_WL32(fside->data + 4, discard_padding);
466  AV_WL8(fside->data + 8, skip_reason);
467  AV_WL8(fside->data + 9, discard_reason);
468  avci->skip_samples = 0;
469  }
470  }
471  }
472 
473  if (avctx->codec->type == AVMEDIA_TYPE_AUDIO &&
475  ret >= 0 && ret != pkt->size && !(avctx->codec->capabilities & AV_CODEC_CAP_SUBFRAMES)) {
476  av_log(avctx, AV_LOG_WARNING, "Multiple frames in a packet.\n");
477  avci->showed_multi_packet_warning = 1;
478  }
479 
480  if (!got_frame)
481  av_frame_unref(frame);
482 
483  if (ret >= 0 && avctx->codec->type == AVMEDIA_TYPE_VIDEO && !(avctx->flags & AV_CODEC_FLAG_TRUNCATED))
484  ret = pkt->size;
485 
486 #if FF_API_AVCTX_TIMEBASE
487  if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
488  avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
489 #endif
490 
491  /* do not stop draining when actual_got_frame != 0 or ret < 0 */
492  /* got_frame == 0 but actual_got_frame != 0 when frame is discarded */
493  if (avci->draining && !actual_got_frame) {
494  if (ret < 0) {
495  /* prevent infinite loop if a decoder wrongly always return error on draining */
496  /* reasonable nb_errors_max = maximum b frames + thread count */
497  int nb_errors_max = 20 + (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME ?
498  avctx->thread_count : 1);
499 
500  if (avci->nb_draining_errors++ >= nb_errors_max) {
501  av_log(avctx, AV_LOG_ERROR, "Too many errors when draining, this is a bug. "
502  "Stop draining and force EOF.\n");
503  avci->draining_done = 1;
504  ret = AVERROR_BUG;
505  }
506  } else {
507  avci->draining_done = 1;
508  }
509  }
510 
511  avci->compat_decode_consumed += ret;
512 
513  if (ret >= pkt->size || ret < 0) {
514  av_packet_unref(pkt);
515  } else {
516  int consumed = ret;
517 
518  pkt->data += consumed;
519  pkt->size -= consumed;
520  avci->last_pkt_props->size -= consumed; // See extract_packet_props() comment.
521  pkt->pts = AV_NOPTS_VALUE;
522  pkt->dts = AV_NOPTS_VALUE;
525  }
526 
527  if (got_frame)
528  av_assert0(frame->buf[0]);
529 
530  return ret < 0 ? ret : 0;
531 }
532 
534 {
535  int ret;
536 
537  while (!frame->buf[0]) {
538  ret = decode_simple_internal(avctx, frame);
539  if (ret < 0)
540  return ret;
541  }
542 
543  return 0;
544 }
545 
547 {
548  AVCodecInternal *avci = avctx->internal;
549  int ret;
550 
551  av_assert0(!frame->buf[0]);
552 
553  if (avctx->codec->receive_frame)
554  ret = avctx->codec->receive_frame(avctx, frame);
555  else
556  ret = decode_simple_receive_frame(avctx, frame);
557 
558  if (ret == AVERROR_EOF)
559  avci->draining_done = 1;
560 
561  if (!ret) {
562  /* the only case where decode data is not set should be decoders
563  * that do not call ff_get_buffer() */
564  av_assert0((frame->private_ref && frame->private_ref->size == sizeof(FrameDecodeData)) ||
565  !(avctx->codec->capabilities & AV_CODEC_CAP_DR1));
566 
567  if (frame->private_ref) {
569 
570  if (fdd->post_process) {
571  ret = fdd->post_process(avctx, frame);
572  if (ret < 0) {
573  av_frame_unref(frame);
574  return ret;
575  }
576  }
577  }
578  }
579 
580  /* free the per-frame decode data */
581  av_buffer_unref(&frame->private_ref);
582 
583  return ret;
584 }
585 
587 {
588  AVCodecInternal *avci = avctx->internal;
589  int ret;
590 
591  if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
592  return AVERROR(EINVAL);
593 
594  if (avctx->internal->draining)
595  return AVERROR_EOF;
596 
597  if (avpkt && !avpkt->size && avpkt->data)
598  return AVERROR(EINVAL);
599 
601  if (avpkt && (avpkt->data || avpkt->side_data_elems)) {
602  ret = av_packet_ref(avci->buffer_pkt, avpkt);
603  if (ret < 0)
604  return ret;
605  }
606 
607  ret = av_bsf_send_packet(avci->bsf, avci->buffer_pkt);
608  if (ret < 0) {
610  return ret;
611  }
612 
613  if (!avci->buffer_frame->buf[0]) {
614  ret = decode_receive_frame_internal(avctx, avci->buffer_frame);
615  if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
616  return ret;
617  }
618 
619  return 0;
620 }
621 
623 {
624  /* make sure we are noisy about decoders returning invalid cropping data */
625  if (frame->crop_left >= INT_MAX - frame->crop_right ||
626  frame->crop_top >= INT_MAX - frame->crop_bottom ||
627  (frame->crop_left + frame->crop_right) >= frame->width ||
628  (frame->crop_top + frame->crop_bottom) >= frame->height) {
629  av_log(avctx, AV_LOG_WARNING,
630  "Invalid cropping information set by a decoder: "
632  "(frame size %dx%d). This is a bug, please report it\n",
633  frame->crop_left, frame->crop_right, frame->crop_top, frame->crop_bottom,
634  frame->width, frame->height);
635  frame->crop_left = 0;
636  frame->crop_right = 0;
637  frame->crop_top = 0;
638  frame->crop_bottom = 0;
639  return 0;
640  }
641 
642  if (!avctx->apply_cropping)
643  return 0;
644 
645  return av_frame_apply_cropping(frame, avctx->flags & AV_CODEC_FLAG_UNALIGNED ?
647 }
648 
650 {
651  AVCodecInternal *avci = avctx->internal;
652  int ret, changed;
653 
654  av_frame_unref(frame);
655 
656  if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
657  return AVERROR(EINVAL);
658 
659  if (avci->buffer_frame->buf[0]) {
660  av_frame_move_ref(frame, avci->buffer_frame);
661  } else {
662  ret = decode_receive_frame_internal(avctx, frame);
663  if (ret < 0)
664  return ret;
665  }
666 
667  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
668  ret = apply_cropping(avctx, frame);
669  if (ret < 0) {
670  av_frame_unref(frame);
671  return ret;
672  }
673  }
674 
675  avctx->frame_number++;
676 
677  if (avctx->flags & AV_CODEC_FLAG_DROPCHANGED) {
678 
679  if (avctx->frame_number == 1) {
680  avci->initial_format = frame->format;
681  switch(avctx->codec_type) {
682  case AVMEDIA_TYPE_VIDEO:
683  avci->initial_width = frame->width;
684  avci->initial_height = frame->height;
685  break;
686  case AVMEDIA_TYPE_AUDIO:
687  avci->initial_sample_rate = frame->sample_rate ? frame->sample_rate :
688  avctx->sample_rate;
689  avci->initial_channels = frame->channels;
690  avci->initial_channel_layout = frame->channel_layout;
691  break;
692  }
693  }
694 
695  if (avctx->frame_number > 1) {
696  changed = avci->initial_format != frame->format;
697 
698  switch(avctx->codec_type) {
699  case AVMEDIA_TYPE_VIDEO:
700  changed |= avci->initial_width != frame->width ||
701  avci->initial_height != frame->height;
702  break;
703  case AVMEDIA_TYPE_AUDIO:
704  changed |= avci->initial_sample_rate != frame->sample_rate ||
705  avci->initial_sample_rate != avctx->sample_rate ||
706  avci->initial_channels != frame->channels ||
707  avci->initial_channel_layout != frame->channel_layout;
708  break;
709  }
710 
711  if (changed) {
712  avci->changed_frames_dropped++;
713  av_log(avctx, AV_LOG_INFO, "dropped changed frame #%d pts %"PRId64
714  " drop count: %d \n",
715  avctx->frame_number, frame->pts,
716  avci->changed_frames_dropped);
717  av_frame_unref(frame);
718  return AVERROR_INPUT_CHANGED;
719  }
720  }
721  }
722  return 0;
723 }
724 
726  int *got_frame, const AVPacket *pkt)
727 {
728  AVCodecInternal *avci = avctx->internal;
729  int ret = 0;
730 
732 
733  if (avci->draining_done && pkt && pkt->size != 0) {
734  av_log(avctx, AV_LOG_WARNING, "Got unexpected packet after EOF\n");
735  avcodec_flush_buffers(avctx);
736  }
737 
738  *got_frame = 0;
739 
740  if (avci->compat_decode_partial_size > 0 &&
741  avci->compat_decode_partial_size != pkt->size) {
742  av_log(avctx, AV_LOG_ERROR,
743  "Got unexpected packet size after a partial decode\n");
744  ret = AVERROR(EINVAL);
745  goto finish;
746  }
747 
748  if (!avci->compat_decode_partial_size) {
749  ret = avcodec_send_packet(avctx, pkt);
750  if (ret == AVERROR_EOF)
751  ret = 0;
752  else if (ret == AVERROR(EAGAIN)) {
753  /* we fully drain all the output in each decode call, so this should not
754  * ever happen */
755  ret = AVERROR_BUG;
756  goto finish;
757  } else if (ret < 0)
758  goto finish;
759  }
760 
761  while (ret >= 0) {
762  ret = avcodec_receive_frame(avctx, frame);
763  if (ret < 0) {
764  if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
765  ret = 0;
766  goto finish;
767  }
768 
769  if (frame != avci->compat_decode_frame) {
770  if (!avctx->refcounted_frames) {
771  ret = unrefcount_frame(avci, frame);
772  if (ret < 0)
773  goto finish;
774  }
775 
776  *got_frame = 1;
777  frame = avci->compat_decode_frame;
778  } else {
779  if (!avci->compat_decode_warned) {
780  av_log(avctx, AV_LOG_WARNING, "The deprecated avcodec_decode_* "
781  "API cannot return all the frames for this decoder. "
782  "Some frames will be dropped. Update your code to the "
783  "new decoding API to fix this.\n");
784  avci->compat_decode_warned = 1;
785  }
786  }
787 
788  if (avci->draining || (!avctx->codec->bsfs && avci->compat_decode_consumed < pkt->size))
789  break;
790  }
791 
792 finish:
793  if (ret == 0) {
794  /* if there are any bsfs then assume full packet is always consumed */
795  if (avctx->codec->bsfs)
796  ret = pkt->size;
797  else
798  ret = FFMIN(avci->compat_decode_consumed, pkt->size);
799  }
800  avci->compat_decode_consumed = 0;
801  avci->compat_decode_partial_size = (ret >= 0) ? pkt->size - ret : 0;
802 
803  return ret;
804 }
805 
807  int *got_picture_ptr,
808  const AVPacket *avpkt)
809 {
810  return compat_decode(avctx, picture, got_picture_ptr, avpkt);
811 }
812 
814  AVFrame *frame,
815  int *got_frame_ptr,
816  const AVPacket *avpkt)
817 {
818  return compat_decode(avctx, frame, got_frame_ptr, avpkt);
819 }
820 
822 {
823  memset(sub, 0, sizeof(*sub));
824  sub->pts = AV_NOPTS_VALUE;
825 }
826 
827 #define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
828 static int recode_subtitle(AVCodecContext *avctx,
829  AVPacket *outpkt, const AVPacket *inpkt)
830 {
831 #if CONFIG_ICONV
832  iconv_t cd = (iconv_t)-1;
833  int ret = 0;
834  char *inb, *outb;
835  size_t inl, outl;
836  AVPacket tmp;
837 #endif
838 
839  if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER || inpkt->size == 0)
840  return 0;
841 
842 #if CONFIG_ICONV
843  cd = iconv_open("UTF-8", avctx->sub_charenc);
844  av_assert0(cd != (iconv_t)-1);
845 
846  inb = inpkt->data;
847  inl = inpkt->size;
848 
849  if (inl >= INT_MAX / UTF8_MAX_BYTES - AV_INPUT_BUFFER_PADDING_SIZE) {
850  av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n");
851  ret = AVERROR(ENOMEM);
852  goto end;
853  }
854 
855  ret = av_new_packet(&tmp, inl * UTF8_MAX_BYTES);
856  if (ret < 0)
857  goto end;
858  outpkt->buf = tmp.buf;
859  outpkt->data = tmp.data;
860  outpkt->size = tmp.size;
861  outb = outpkt->data;
862  outl = outpkt->size;
863 
864  if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
865  iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
866  outl >= outpkt->size || inl != 0) {
867  ret = FFMIN(AVERROR(errno), -1);
868  av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
869  "from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
870  av_packet_unref(&tmp);
871  goto end;
872  }
873  outpkt->size -= outl;
874  memset(outpkt->data + outpkt->size, 0, outl);
875 
876 end:
877  if (cd != (iconv_t)-1)
878  iconv_close(cd);
879  return ret;
880 #else
881  av_log(avctx, AV_LOG_ERROR, "requesting subtitles recoding without iconv");
882  return AVERROR(EINVAL);
883 #endif
884 }
885 
886 static int utf8_check(const uint8_t *str)
887 {
888  const uint8_t *byte;
889  uint32_t codepoint, min;
890 
891  while (*str) {
892  byte = str;
893  GET_UTF8(codepoint, *(byte++), return 0;);
894  min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
895  1 << (5 * (byte - str) - 4);
896  if (codepoint < min || codepoint >= 0x110000 ||
897  codepoint == 0xFFFE /* BOM */ ||
898  codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
899  return 0;
900  str = byte;
901  }
902  return 1;
903 }
904 
905 #if FF_API_ASS_TIMING
906 static void insert_ts(AVBPrint *buf, int ts)
907 {
908  if (ts == -1) {
909  av_bprintf(buf, "9:59:59.99,");
910  } else {
911  int h, m, s;
912 
913  h = ts/360000; ts -= 360000*h;
914  m = ts/ 6000; ts -= 6000*m;
915  s = ts/ 100; ts -= 100*s;
916  av_bprintf(buf, "%d:%02d:%02d.%02d,", h, m, s, ts);
917  }
918 }
919 
921 {
922  int i;
923  AVBPrint buf;
924 
926 
927  for (i = 0; i < sub->num_rects; i++) {
928  char *final_dialog;
929  const char *dialog;
930  AVSubtitleRect *rect = sub->rects[i];
931  int ts_start, ts_duration = -1;
932  long int layer;
933 
934  if (rect->type != SUBTITLE_ASS || !strncmp(rect->ass, "Dialogue: ", 10))
935  continue;
936 
937  av_bprint_clear(&buf);
938 
939  /* skip ReadOrder */
940  dialog = strchr(rect->ass, ',');
941  if (!dialog)
942  continue;
943  dialog++;
944 
945  /* extract Layer or Marked */
946  layer = strtol(dialog, (char**)&dialog, 10);
947  if (*dialog != ',')
948  continue;
949  dialog++;
950 
951  /* rescale timing to ASS time base (ms) */
952  ts_start = av_rescale_q(pkt->pts, tb, av_make_q(1, 100));
953  if (pkt->duration != -1)
954  ts_duration = av_rescale_q(pkt->duration, tb, av_make_q(1, 100));
955  sub->end_display_time = FFMAX(sub->end_display_time, 10 * ts_duration);
956 
957  /* construct ASS (standalone file form with timestamps) string */
958  av_bprintf(&buf, "Dialogue: %ld,", layer);
959  insert_ts(&buf, ts_start);
960  insert_ts(&buf, ts_duration == -1 ? -1 : ts_start + ts_duration);
961  av_bprintf(&buf, "%s\r\n", dialog);
962 
963  final_dialog = av_strdup(buf.str);
964  if (!av_bprint_is_complete(&buf) || !final_dialog) {
965  av_freep(&final_dialog);
966  av_bprint_finalize(&buf, NULL);
967  return AVERROR(ENOMEM);
968  }
969  av_freep(&rect->ass);
970  rect->ass = final_dialog;
971  }
972 
973  av_bprint_finalize(&buf, NULL);
974  return 0;
975 }
976 #endif
977 
979  int *got_sub_ptr,
980  AVPacket *avpkt)
981 {
982  int i, ret = 0;
983 
984  if (!avpkt->data && avpkt->size) {
985  av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
986  return AVERROR(EINVAL);
987  }
988  if (!avctx->codec)
989  return AVERROR(EINVAL);
990  if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
991  av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
992  return AVERROR(EINVAL);
993  }
994 
995  *got_sub_ptr = 0;
997 
998  if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size) {
999  AVPacket pkt_recoded = *avpkt;
1000 
1001  ret = recode_subtitle(avctx, &pkt_recoded, avpkt);
1002  if (ret < 0) {
1003  *got_sub_ptr = 0;
1004  } else {
1005  ret = extract_packet_props(avctx->internal, &pkt_recoded);
1006  if (ret < 0)
1007  return ret;
1008 
1009  if (avctx->pkt_timebase.num && avpkt->pts != AV_NOPTS_VALUE)
1010  sub->pts = av_rescale_q(avpkt->pts,
1011  avctx->pkt_timebase, AV_TIME_BASE_Q);
1012  ret = avctx->codec->decode(avctx, sub, got_sub_ptr, &pkt_recoded);
1013  av_assert1((ret >= 0) >= !!*got_sub_ptr &&
1014  !!*got_sub_ptr >= !!sub->num_rects);
1015 
1016 #if FF_API_ASS_TIMING
1018  && *got_sub_ptr && sub->num_rects) {
1019  const AVRational tb = avctx->pkt_timebase.num ? avctx->pkt_timebase
1020  : avctx->time_base;
1021  int err = convert_sub_to_old_ass_form(sub, avpkt, tb);
1022  if (err < 0)
1023  ret = err;
1024  }
1025 #endif
1026 
1027  if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
1028  avctx->pkt_timebase.num) {
1029  AVRational ms = { 1, 1000 };
1030  sub->end_display_time = av_rescale_q(avpkt->duration,
1031  avctx->pkt_timebase, ms);
1032  }
1033 
1035  sub->format = 0;
1036  else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB)
1037  sub->format = 1;
1038 
1039  for (i = 0; i < sub->num_rects; i++) {
1041  sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
1042  av_log(avctx, AV_LOG_ERROR,
1043  "Invalid UTF-8 in decoded subtitles text; "
1044  "maybe missing -sub_charenc option\n");
1045  avsubtitle_free(sub);
1046  ret = AVERROR_INVALIDDATA;
1047  break;
1048  }
1049  }
1050 
1051  if (avpkt->data != pkt_recoded.data) { // did we recode?
1052  /* prevent from destroying side data from original packet */
1053  pkt_recoded.side_data = NULL;
1054  pkt_recoded.side_data_elems = 0;
1055 
1056  av_packet_unref(&pkt_recoded);
1057  }
1058  }
1059 
1060  if (*got_sub_ptr)
1061  avctx->frame_number++;
1062  }
1063 
1064  return ret;
1065 }
1066 
1068  const enum AVPixelFormat *fmt)
1069 {
1070  const AVPixFmtDescriptor *desc;
1071  const AVCodecHWConfig *config;
1072  int i, n;
1073 
1074  // If a device was supplied when the codec was opened, assume that the
1075  // user wants to use it.
1076  if (avctx->hw_device_ctx && avctx->codec->hw_configs) {
1077  AVHWDeviceContext *device_ctx =
1079  for (i = 0;; i++) {
1080  config = &avctx->codec->hw_configs[i]->public;
1081  if (!config)
1082  break;
1083  if (!(config->methods &
1085  continue;
1086  if (device_ctx->type != config->device_type)
1087  continue;
1088  for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++) {
1089  if (config->pix_fmt == fmt[n])
1090  return fmt[n];
1091  }
1092  }
1093  }
1094  // No device or other setup, so we have to choose from things which
1095  // don't any other external information.
1096 
1097  // If the last element of the list is a software format, choose it
1098  // (this should be best software format if any exist).
1099  for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++);
1100  desc = av_pix_fmt_desc_get(fmt[n - 1]);
1101  if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
1102  return fmt[n - 1];
1103 
1104  // Finally, traverse the list in order and choose the first entry
1105  // with no external dependencies (if there is no hardware configuration
1106  // information available then this just picks the first entry).
1107  for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++) {
1108  for (i = 0;; i++) {
1109  config = avcodec_get_hw_config(avctx->codec, i);
1110  if (!config)
1111  break;
1112  if (config->pix_fmt == fmt[n])
1113  break;
1114  }
1115  if (!config) {
1116  // No specific config available, so the decoder must be able
1117  // to handle this format without any additional setup.
1118  return fmt[n];
1119  }
1121  // Usable with only internal setup.
1122  return fmt[n];
1123  }
1124  }
1125 
1126  // Nothing is usable, give up.
1127  return AV_PIX_FMT_NONE;
1128 }
1129 
1131  enum AVHWDeviceType dev_type)
1132 {
1133  AVHWDeviceContext *device_ctx;
1134  AVHWFramesContext *frames_ctx;
1135  int ret;
1136 
1137  if (!avctx->hwaccel)
1138  return AVERROR(ENOSYS);
1139 
1140  if (avctx->hw_frames_ctx)
1141  return 0;
1142  if (!avctx->hw_device_ctx) {
1143  av_log(avctx, AV_LOG_ERROR, "A hardware frames or device context is "
1144  "required for hardware accelerated decoding.\n");
1145  return AVERROR(EINVAL);
1146  }
1147 
1148  device_ctx = (AVHWDeviceContext *)avctx->hw_device_ctx->data;
1149  if (device_ctx->type != dev_type) {
1150  av_log(avctx, AV_LOG_ERROR, "Device type %s expected for hardware "
1151  "decoding, but got %s.\n", av_hwdevice_get_type_name(dev_type),
1152  av_hwdevice_get_type_name(device_ctx->type));
1153  return AVERROR(EINVAL);
1154  }
1155 
1157  avctx->hw_device_ctx,
1158  avctx->hwaccel->pix_fmt,
1159  &avctx->hw_frames_ctx);
1160  if (ret < 0)
1161  return ret;
1162 
1163  frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
1164 
1165 
1166  if (frames_ctx->initial_pool_size) {
1167  // We guarantee 4 base work surfaces. The function above guarantees 1
1168  // (the absolute minimum), so add the missing count.
1169  frames_ctx->initial_pool_size += 3;
1170  }
1171 
1172  ret = av_hwframe_ctx_init(avctx->hw_frames_ctx);
1173  if (ret < 0) {
1174  av_buffer_unref(&avctx->hw_frames_ctx);
1175  return ret;
1176  }
1177 
1178  return 0;
1179 }
1180 
1182  AVBufferRef *device_ref,
1184  AVBufferRef **out_frames_ref)
1185 {
1186  AVBufferRef *frames_ref = NULL;
1187  const AVCodecHWConfigInternal *hw_config;
1188  const AVHWAccel *hwa;
1189  int i, ret;
1190 
1191  for (i = 0;; i++) {
1192  hw_config = avctx->codec->hw_configs[i];
1193  if (!hw_config)
1194  return AVERROR(ENOENT);
1195  if (hw_config->public.pix_fmt == hw_pix_fmt)
1196  break;
1197  }
1198 
1199  hwa = hw_config->hwaccel;
1200  if (!hwa || !hwa->frame_params)
1201  return AVERROR(ENOENT);
1202 
1203  frames_ref = av_hwframe_ctx_alloc(device_ref);
1204  if (!frames_ref)
1205  return AVERROR(ENOMEM);
1206 
1207  ret = hwa->frame_params(avctx, frames_ref);
1208  if (ret >= 0) {
1209  AVHWFramesContext *frames_ctx = (AVHWFramesContext*)frames_ref->data;
1210 
1211  if (frames_ctx->initial_pool_size) {
1212  // If the user has requested that extra output surfaces be
1213  // available then add them here.
1214  if (avctx->extra_hw_frames > 0)
1215  frames_ctx->initial_pool_size += avctx->extra_hw_frames;
1216 
1217  // If frame threading is enabled then an extra surface per thread
1218  // is also required.
1219  if (avctx->active_thread_type & FF_THREAD_FRAME)
1220  frames_ctx->initial_pool_size += avctx->thread_count;
1221  }
1222 
1223  *out_frames_ref = frames_ref;
1224  } else {
1225  av_buffer_unref(&frames_ref);
1226  }
1227  return ret;
1228 }
1229 
1230 static int hwaccel_init(AVCodecContext *avctx,
1231  const AVCodecHWConfigInternal *hw_config)
1232 {
1233  const AVHWAccel *hwaccel;
1234  int err;
1235 
1236  hwaccel = hw_config->hwaccel;
1239  av_log(avctx, AV_LOG_WARNING, "Ignoring experimental hwaccel: %s\n",
1240  hwaccel->name);
1241  return AVERROR_PATCHWELCOME;
1242  }
1243 
1244  if (hwaccel->priv_data_size) {
1245  avctx->internal->hwaccel_priv_data =
1246  av_mallocz(hwaccel->priv_data_size);
1247  if (!avctx->internal->hwaccel_priv_data)
1248  return AVERROR(ENOMEM);
1249  }
1250 
1251  avctx->hwaccel = hwaccel;
1252  if (hwaccel->init) {
1253  err = hwaccel->init(avctx);
1254  if (err < 0) {
1255  av_log(avctx, AV_LOG_ERROR, "Failed setup for format %s: "
1256  "hwaccel initialisation returned error.\n",
1257  av_get_pix_fmt_name(hw_config->public.pix_fmt));
1259  avctx->hwaccel = NULL;
1260  return err;
1261  }
1262  }
1263 
1264  return 0;
1265 }
1266 
1267 static void hwaccel_uninit(AVCodecContext *avctx)
1268 {
1269  if (avctx->hwaccel && avctx->hwaccel->uninit)
1270  avctx->hwaccel->uninit(avctx);
1271 
1273 
1274  avctx->hwaccel = NULL;
1275 
1276  av_buffer_unref(&avctx->hw_frames_ctx);
1277 }
1278 
1279 int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
1280 {
1281  const AVPixFmtDescriptor *desc;
1282  enum AVPixelFormat *choices;
1283  enum AVPixelFormat ret, user_choice;
1284  const AVCodecHWConfigInternal *hw_config;
1285  const AVCodecHWConfig *config;
1286  int i, n, err;
1287 
1288  // Find end of list.
1289  for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++);
1290  // Must contain at least one entry.
1291  av_assert0(n >= 1);
1292  // If a software format is available, it must be the last entry.
1293  desc = av_pix_fmt_desc_get(fmt[n - 1]);
1294  if (desc->flags & AV_PIX_FMT_FLAG_HWACCEL) {
1295  // No software format is available.
1296  } else {
1297  avctx->sw_pix_fmt = fmt[n - 1];
1298  }
1299 
1300  choices = av_malloc_array(n + 1, sizeof(*choices));
1301  if (!choices)
1302  return AV_PIX_FMT_NONE;
1303 
1304  memcpy(choices, fmt, (n + 1) * sizeof(*choices));
1305 
1306  for (;;) {
1307  // Remove the previous hwaccel, if there was one.
1308  hwaccel_uninit(avctx);
1309 
1310  user_choice = avctx->get_format(avctx, choices);
1311  if (user_choice == AV_PIX_FMT_NONE) {
1312  // Explicitly chose nothing, give up.
1313  ret = AV_PIX_FMT_NONE;
1314  break;
1315  }
1316 
1317  desc = av_pix_fmt_desc_get(user_choice);
1318  if (!desc) {
1319  av_log(avctx, AV_LOG_ERROR, "Invalid format returned by "
1320  "get_format() callback.\n");
1321  ret = AV_PIX_FMT_NONE;
1322  break;
1323  }
1324  av_log(avctx, AV_LOG_DEBUG, "Format %s chosen by get_format().\n",
1325  desc->name);
1326 
1327  for (i = 0; i < n; i++) {
1328  if (choices[i] == user_choice)
1329  break;
1330  }
1331  if (i == n) {
1332  av_log(avctx, AV_LOG_ERROR, "Invalid return from get_format(): "
1333  "%s not in possible list.\n", desc->name);
1334  ret = AV_PIX_FMT_NONE;
1335  break;
1336  }
1337 
1338  if (avctx->codec->hw_configs) {
1339  for (i = 0;; i++) {
1340  hw_config = avctx->codec->hw_configs[i];
1341  if (!hw_config)
1342  break;
1343  if (hw_config->public.pix_fmt == user_choice)
1344  break;
1345  }
1346  } else {
1347  hw_config = NULL;
1348  }
1349 
1350  if (!hw_config) {
1351  // No config available, so no extra setup required.
1352  ret = user_choice;
1353  break;
1354  }
1355  config = &hw_config->public;
1356 
1357  if (config->methods &
1359  avctx->hw_frames_ctx) {
1360  const AVHWFramesContext *frames_ctx =
1362  if (frames_ctx->format != user_choice) {
1363  av_log(avctx, AV_LOG_ERROR, "Invalid setup for format %s: "
1364  "does not match the format of the provided frames "
1365  "context.\n", desc->name);
1366  goto try_again;
1367  }
1368  } else if (config->methods &
1370  avctx->hw_device_ctx) {
1371  const AVHWDeviceContext *device_ctx =
1373  if (device_ctx->type != config->device_type) {
1374  av_log(avctx, AV_LOG_ERROR, "Invalid setup for format %s: "
1375  "does not match the type of the provided device "
1376  "context.\n", desc->name);
1377  goto try_again;
1378  }
1379  } else if (config->methods &
1381  // Internal-only setup, no additional configuration.
1382  } else if (config->methods &
1384  // Some ad-hoc configuration we can't see and can't check.
1385  } else {
1386  av_log(avctx, AV_LOG_ERROR, "Invalid setup for format %s: "
1387  "missing configuration.\n", desc->name);
1388  goto try_again;
1389  }
1390  if (hw_config->hwaccel) {
1391  av_log(avctx, AV_LOG_DEBUG, "Format %s requires hwaccel "
1392  "initialisation.\n", desc->name);
1393  err = hwaccel_init(avctx, hw_config);
1394  if (err < 0)
1395  goto try_again;
1396  }
1397  ret = user_choice;
1398  break;
1399 
1400  try_again:
1401  av_log(avctx, AV_LOG_DEBUG, "Format %s not usable, retrying "
1402  "get_format() without it.\n", desc->name);
1403  for (i = 0; i < n; i++) {
1404  if (choices[i] == user_choice)
1405  break;
1406  }
1407  for (; i + 1 < n; i++)
1408  choices[i] = choices[i + 1];
1409  --n;
1410  }
1411 
1412  av_freep(&choices);
1413  return ret;
1414 }
1415 
1416 static void frame_pool_free(void *opaque, uint8_t *data)
1417 {
1418  FramePool *pool = (FramePool*)data;
1419  int i;
1420 
1421  for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
1422  av_buffer_pool_uninit(&pool->pools[i]);
1423 
1424  av_freep(&data);
1425 }
1426 
1428 {
1429  FramePool *pool = av_mallocz(sizeof(*pool));
1430  AVBufferRef *buf;
1431 
1432  if (!pool)
1433  return NULL;
1434 
1435  buf = av_buffer_create((uint8_t*)pool, sizeof(*pool),
1436  frame_pool_free, NULL, 0);
1437  if (!buf) {
1438  av_freep(&pool);
1439  return NULL;
1440  }
1441 
1442  return buf;
1443 }
1444 
1446 {
1447  FramePool *pool = avctx->internal->pool ?
1448  (FramePool*)avctx->internal->pool->data : NULL;
1449  AVBufferRef *pool_buf;
1450  int i, ret, ch, planes;
1451 
1452  if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
1453  int planar = av_sample_fmt_is_planar(frame->format);
1454  ch = frame->channels;
1455  planes = planar ? ch : 1;
1456  }
1457 
1458  if (pool && pool->format == frame->format) {
1459  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO &&
1460  pool->width == frame->width && pool->height == frame->height)
1461  return 0;
1462  if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && pool->planes == planes &&
1463  pool->channels == ch && frame->nb_samples == pool->samples)
1464  return 0;
1465  }
1466 
1467  pool_buf = frame_pool_alloc();
1468  if (!pool_buf)
1469  return AVERROR(ENOMEM);
1470  pool = (FramePool*)pool_buf->data;
1471 
1472  switch (avctx->codec_type) {
1473  case AVMEDIA_TYPE_VIDEO: {
1474  uint8_t *data[4];
1475  int linesize[4];
1476  int size[4] = { 0 };
1477  int w = frame->width;
1478  int h = frame->height;
1479  int tmpsize, unaligned;
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  goto fail;
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  ret = tmpsize;
1501  goto fail;
1502  }
1503 
1504  for (i = 0; i < 3 && data[i + 1]; i++)
1505  size[i] = data[i + 1] - data[i];
1506  size[i] = tmpsize - (data[i] - data[0]);
1507 
1508  for (i = 0; i < 4; i++) {
1509  pool->linesize[i] = linesize[i];
1510  if (size[i]) {
1511  pool->pools[i] = av_buffer_pool_init(size[i] + 16 + STRIDE_ALIGN - 1,
1513  NULL :
1515  if (!pool->pools[i]) {
1516  ret = AVERROR(ENOMEM);
1517  goto fail;
1518  }
1519  }
1520  }
1521  pool->format = frame->format;
1522  pool->width = frame->width;
1523  pool->height = frame->height;
1524 
1525  break;
1526  }
1527  case AVMEDIA_TYPE_AUDIO: {
1528  ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
1529  frame->nb_samples, frame->format, 0);
1530  if (ret < 0)
1531  goto fail;
1532 
1533  pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
1534  if (!pool->pools[0]) {
1535  ret = AVERROR(ENOMEM);
1536  goto fail;
1537  }
1538 
1539  pool->format = frame->format;
1540  pool->planes = planes;
1541  pool->channels = ch;
1542  pool->samples = frame->nb_samples;
1543  break;
1544  }
1545  default: av_assert0(0);
1546  }
1547 
1548  av_buffer_unref(&avctx->internal->pool);
1549  avctx->internal->pool = pool_buf;
1550 
1551  return 0;
1552 fail:
1553  av_buffer_unref(&pool_buf);
1554  return ret;
1555 }
1556 
1558 {
1559  FramePool *pool = (FramePool*)avctx->internal->pool->data;
1560  int planes = pool->planes;
1561  int i;
1562 
1563  frame->linesize[0] = pool->linesize[0];
1564 
1566  frame->extended_data = av_mallocz_array(planes, sizeof(*frame->extended_data));
1569  sizeof(*frame->extended_buf));
1570  if (!frame->extended_data || !frame->extended_buf) {
1571  av_freep(&frame->extended_data);
1572  av_freep(&frame->extended_buf);
1573  return AVERROR(ENOMEM);
1574  }
1575  } else {
1576  frame->extended_data = frame->data;
1577  av_assert0(frame->nb_extended_buf == 0);
1578  }
1579 
1580  for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
1581  frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
1582  if (!frame->buf[i])
1583  goto fail;
1584  frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
1585  }
1586  for (i = 0; i < frame->nb_extended_buf; i++) {
1587  frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
1588  if (!frame->extended_buf[i])
1589  goto fail;
1590  frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
1591  }
1592 
1593  if (avctx->debug & FF_DEBUG_BUFFERS)
1594  av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
1595 
1596  return 0;
1597 fail:
1598  av_frame_unref(frame);
1599  return AVERROR(ENOMEM);
1600 }
1601 
1603 {
1604  FramePool *pool = (FramePool*)s->internal->pool->data;
1606  int i;
1607 
1608  if (pic->data[0] || pic->data[1] || pic->data[2] || pic->data[3]) {
1609  av_log(s, AV_LOG_ERROR, "pic->data[*]!=NULL in avcodec_default_get_buffer\n");
1610  return -1;
1611  }
1612 
1613  if (!desc) {
1614  av_log(s, AV_LOG_ERROR,
1615  "Unable to get pixel format descriptor for format %s\n",
1616  av_get_pix_fmt_name(pic->format));
1617  return AVERROR(EINVAL);
1618  }
1619 
1620  memset(pic->data, 0, sizeof(pic->data));
1621  pic->extended_data = pic->data;
1622 
1623  for (i = 0; i < 4 && pool->pools[i]; i++) {
1624  pic->linesize[i] = pool->linesize[i];
1625 
1626  pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
1627  if (!pic->buf[i])
1628  goto fail;
1629 
1630  pic->data[i] = pic->buf[i]->data;
1631  }
1632  for (; i < AV_NUM_DATA_POINTERS; i++) {
1633  pic->data[i] = NULL;
1634  pic->linesize[i] = 0;
1635  }
1636  if (desc->flags & AV_PIX_FMT_FLAG_PAL ||
1637  ((desc->flags & FF_PSEUDOPAL) && pic->data[1]))
1638  avpriv_set_systematic_pal2((uint32_t *)pic->data[1], pic->format);
1639 
1640  if (s->debug & FF_DEBUG_BUFFERS)
1641  av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
1642 
1643  return 0;
1644 fail:
1645  av_frame_unref(pic);
1646  return AVERROR(ENOMEM);
1647 }
1648 
1650 {
1651  int ret;
1652 
1653  if (avctx->hw_frames_ctx) {
1654  ret = av_hwframe_get_buffer(avctx->hw_frames_ctx, frame, 0);
1655  frame->width = avctx->coded_width;
1656  frame->height = avctx->coded_height;
1657  return ret;
1658  }
1659 
1660  if ((ret = update_frame_pool(avctx, frame)) < 0)
1661  return ret;
1662 
1663  switch (avctx->codec_type) {
1664  case AVMEDIA_TYPE_VIDEO:
1665  return video_get_buffer(avctx, frame);
1666  case AVMEDIA_TYPE_AUDIO:
1667  return audio_get_buffer(avctx, frame);
1668  default:
1669  return -1;
1670  }
1671 }
1672 
1674 {
1675  int size;
1676  const uint8_t *side_metadata;
1677 
1678  AVDictionary **frame_md = &frame->metadata;
1679 
1680  side_metadata = av_packet_get_side_data(avpkt,
1682  return av_packet_unpack_dictionary(side_metadata, size, frame_md);
1683 }
1684 
1686 {
1687  const AVPacket *pkt = avctx->internal->last_pkt_props;
1688  int i;
1689  static const struct {
1690  enum AVPacketSideDataType packet;
1692  } sd[] = {
1702  };
1703 
1704  if (pkt) {
1705  frame->pts = pkt->pts;
1706 #if FF_API_PKT_PTS
1708  frame->pkt_pts = pkt->pts;
1710 #endif
1711  frame->pkt_pos = pkt->pos;
1712  frame->pkt_duration = pkt->duration;
1713  frame->pkt_size = pkt->size;
1714 
1715  for (i = 0; i < FF_ARRAY_ELEMS(sd); i++) {
1716  int size;
1717  uint8_t *packet_sd = av_packet_get_side_data(pkt, sd[i].packet, &size);
1718  if (packet_sd) {
1719  AVFrameSideData *frame_sd = av_frame_new_side_data(frame,
1720  sd[i].frame,
1721  size);
1722  if (!frame_sd)
1723  return AVERROR(ENOMEM);
1724 
1725  memcpy(frame_sd->data, packet_sd, size);
1726  }
1727  }
1728  add_metadata_from_side_data(pkt, frame);
1729 
1730  if (pkt->flags & AV_PKT_FLAG_DISCARD) {
1731  frame->flags |= AV_FRAME_FLAG_DISCARD;
1732  } else {
1733  frame->flags = (frame->flags & ~AV_FRAME_FLAG_DISCARD);
1734  }
1735  }
1736  frame->reordered_opaque = avctx->reordered_opaque;
1737 
1738  if (frame->color_primaries == AVCOL_PRI_UNSPECIFIED)
1739  frame->color_primaries = avctx->color_primaries;
1740  if (frame->color_trc == AVCOL_TRC_UNSPECIFIED)
1741  frame->color_trc = avctx->color_trc;
1742  if (frame->colorspace == AVCOL_SPC_UNSPECIFIED)
1743  frame->colorspace = avctx->colorspace;
1744  if (frame->color_range == AVCOL_RANGE_UNSPECIFIED)
1745  frame->color_range = avctx->color_range;
1747  frame->chroma_location = avctx->chroma_sample_location;
1748 
1749  switch (avctx->codec->type) {
1750  case AVMEDIA_TYPE_VIDEO:
1751  frame->format = avctx->pix_fmt;
1752  if (!frame->sample_aspect_ratio.num)
1753  frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
1754 
1755  if (frame->width && frame->height &&
1756  av_image_check_sar(frame->width, frame->height,
1757  frame->sample_aspect_ratio) < 0) {
1758  av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
1759  frame->sample_aspect_ratio.num,
1760  frame->sample_aspect_ratio.den);
1761  frame->sample_aspect_ratio = (AVRational){ 0, 1 };
1762  }
1763 
1764  break;
1765  case AVMEDIA_TYPE_AUDIO:
1766  if (!frame->sample_rate)
1767  frame->sample_rate = avctx->sample_rate;
1768  if (frame->format < 0)
1769  frame->format = avctx->sample_fmt;
1770  if (!frame->channel_layout) {
1771  if (avctx->channel_layout) {
1773  avctx->channels) {
1774  av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
1775  "configuration.\n");
1776  return AVERROR(EINVAL);
1777  }
1778 
1779  frame->channel_layout = avctx->channel_layout;
1780  } else {
1781  if (avctx->channels > FF_SANE_NB_CHANNELS) {
1782  av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
1783  avctx->channels);
1784  return AVERROR(ENOSYS);
1785  }
1786  }
1787  }
1788  frame->channels = avctx->channels;
1789  break;
1790  }
1791  return 0;
1792 }
1793 
1795 {
1796  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1797  int i;
1798  int num_planes = av_pix_fmt_count_planes(frame->format);
1800  int flags = desc ? desc->flags : 0;
1801  if (num_planes == 1 && (flags & AV_PIX_FMT_FLAG_PAL))
1802  num_planes = 2;
1803  if ((flags & FF_PSEUDOPAL) && frame->data[1])
1804  num_planes = 2;
1805  for (i = 0; i < num_planes; i++) {
1806  av_assert0(frame->data[i]);
1807  }
1808  // For formats without data like hwaccel allow unused pointers to be non-NULL.
1809  for (i = num_planes; num_planes > 0 && i < FF_ARRAY_ELEMS(frame->data); i++) {
1810  if (frame->data[i])
1811  av_log(avctx, AV_LOG_ERROR, "Buffer returned by get_buffer2() did not zero unused plane pointers\n");
1812  frame->data[i] = NULL;
1813  }
1814  }
1815 }
1816 
1817 static void decode_data_free(void *opaque, uint8_t *data)
1818 {
1819  FrameDecodeData *fdd = (FrameDecodeData*)data;
1820 
1821  if (fdd->post_process_opaque_free)
1823 
1824  if (fdd->hwaccel_priv_free)
1825  fdd->hwaccel_priv_free(fdd->hwaccel_priv);
1826 
1827  av_freep(&fdd);
1828 }
1829 
1831 {
1832  AVBufferRef *fdd_buf;
1833  FrameDecodeData *fdd;
1834 
1835  av_assert1(!frame->private_ref);
1836  av_buffer_unref(&frame->private_ref);
1837 
1838  fdd = av_mallocz(sizeof(*fdd));
1839  if (!fdd)
1840  return AVERROR(ENOMEM);
1841 
1842  fdd_buf = av_buffer_create((uint8_t*)fdd, sizeof(*fdd), decode_data_free,
1844  if (!fdd_buf) {
1845  av_freep(&fdd);
1846  return AVERROR(ENOMEM);
1847  }
1848 
1849  frame->private_ref = fdd_buf;
1850 
1851  return 0;
1852 }
1853 
1855 {
1856  const AVHWAccel *hwaccel = avctx->hwaccel;
1857  int override_dimensions = 1;
1858  int ret;
1859 
1860  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1861  if ((unsigned)avctx->width > INT_MAX - STRIDE_ALIGN ||
1862  (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) {
1863  av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
1864  ret = AVERROR(EINVAL);
1865  goto fail;
1866  }
1867 
1868  if (frame->width <= 0 || frame->height <= 0) {
1869  frame->width = FFMAX(avctx->width, AV_CEIL_RSHIFT(avctx->coded_width, avctx->lowres));
1870  frame->height = FFMAX(avctx->height, AV_CEIL_RSHIFT(avctx->coded_height, avctx->lowres));
1871  override_dimensions = 0;
1872  }
1873 
1874  if (frame->data[0] || frame->data[1] || frame->data[2] || frame->data[3]) {
1875  av_log(avctx, AV_LOG_ERROR, "pic->data[*]!=NULL in get_buffer_internal\n");
1876  ret = AVERROR(EINVAL);
1877  goto fail;
1878  }
1879  } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
1880  if (frame->nb_samples * (int64_t)avctx->channels > avctx->max_samples) {
1881  av_log(avctx, AV_LOG_ERROR, "samples per frame %d, exceeds max_samples %"PRId64"\n", frame->nb_samples, avctx->max_samples);
1882  ret = AVERROR(EINVAL);
1883  goto fail;
1884  }
1885  }
1886  ret = ff_decode_frame_props(avctx, frame);
1887  if (ret < 0)
1888  goto fail;
1889 
1890  if (hwaccel) {
1891  if (hwaccel->alloc_frame) {
1892  ret = hwaccel->alloc_frame(avctx, frame);
1893  goto end;
1894  }
1895  } else
1896  avctx->sw_pix_fmt = avctx->pix_fmt;
1897 
1898  ret = avctx->get_buffer2(avctx, frame, flags);
1899  if (ret < 0)
1900  goto fail;
1901 
1902  validate_avframe_allocation(avctx, frame);
1903 
1904  ret = ff_attach_decode_data(frame);
1905  if (ret < 0)
1906  goto fail;
1907 
1908 end:
1909  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions &&
1911  frame->width = avctx->width;
1912  frame->height = avctx->height;
1913  }
1914 
1915 fail:
1916  if (ret < 0) {
1917  av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
1918  av_frame_unref(frame);
1919  }
1920 
1921  return ret;
1922 }
1923 
1925 {
1926  AVFrame *tmp;
1927  int ret;
1928 
1930 
1931  if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
1932  av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
1933  frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt));
1934  av_frame_unref(frame);
1935  }
1936 
1937  if (!frame->data[0])
1938  return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1939 
1940  if ((flags & FF_REGET_BUFFER_FLAG_READONLY) || av_frame_is_writable(frame))
1941  return ff_decode_frame_props(avctx, frame);
1942 
1943  tmp = av_frame_alloc();
1944  if (!tmp)
1945  return AVERROR(ENOMEM);
1946 
1947  av_frame_move_ref(tmp, frame);
1948 
1949  ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1950  if (ret < 0) {
1951  av_frame_free(&tmp);
1952  return ret;
1953  }
1954 
1955  av_frame_copy(frame, tmp);
1956  av_frame_free(&tmp);
1957 
1958  return 0;
1959 }
1960 
1962 {
1963  int ret = reget_buffer_internal(avctx, frame, flags);
1964  if (ret < 0)
1965  av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
1966  return ret;
1967 }
#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:97
This struct aggregates all the (hardware/vendor-specific) "high-level" state, i.e.
Definition: hwcontext.h:61
#define FF_COMPLIANCE_EXPERIMENTAL
Allow nonstandardized experimental things.
Definition: avcodec.h:1594
enum AVPixelFormat(* get_format)(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
callback to negotiate the pixelFormat
Definition: avcodec.h:778
AVCodecHWConfig public
This is the structure which will be returned to the user by avcodec_get_hw_config().
Definition: hwconfig.h:34
int nb_draining_errors
Definition: internal.h:190
#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:2127
#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:1279
const struct AVCodec * codec
Definition: avcodec.h:535
AVRational framerate
Definition: avcodec.h:2069
const AVCodecDescriptor * codec_descriptor
AVCodecDescriptor.
Definition: avcodec.h:2090
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
The codec supports this format via the hw_frames_ctx interface.
Definition: codec.h:406
#define AV_NUM_DATA_POINTERS
Definition: frame.h:301
void av_bprintf(AVBPrint *buf, const char *fmt,...)
Definition: bprint.c:94
AVPacketSideDataType
Definition: packet.h:40
int64_t pts_correction_num_faulty_dts
Number of incorrect PTS values so far.
Definition: avcodec.h:2107
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:427
int size
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2549
This structure describes decoded (raw) audio or video data.
Definition: frame.h:300
int stride_align[AV_NUM_DATA_POINTERS]
Definition: decode.c:60
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:2314
static int decode_receive_frame_internal(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:546
const struct AVCodecHWConfigInternal ** hw_configs
Array of pointers to hardware configurations supported by the codec, or NULL if no hardware supported...
Definition: codec.h:325
#define AV_CODEC_FLAG2_SKIP_MANUAL
Do not skip samples and export skip information as frame side data.
Definition: avcodec.h:384
int coded_width
Bitstream width / height, may be different from width/height e.g.
Definition: avcodec.h:714
int64_t pkt_pos
reordered pos from the last AVPacket that has been input into the decoder
Definition: frame.h:571
int capabilities
Hardware accelerated codec capabilities.
Definition: avcodec.h:2443
AVPacket * last_pkt_props
Properties (timestamps+side data) extracted from the last packet passed for decoding.
Definition: internal.h:144
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:920
int changed_frames_dropped
Definition: internal.h:193
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2589
AVFrame * to_free
Definition: internal.h:131
int64_t pos
byte position in stream, -1 if unknown
Definition: packet.h:375
static void get_subtitle_defaults(AVSubtitle *sub)
Definition: decode.c:821
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:491
static int decode_simple_receive_frame(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:533
const char * desc
Definition: nvenc.c:79
int width
Definition: decode.c:59
int(* receive_frame)(struct AVCodecContext *avctx, struct AVFrame *frame)
Decode API with decoupled packet/frame dataflow.
Definition: codec.h:300
This side data should be associated with a video stream and contains Stereoscopic 3D information in f...
Definition: packet.h:114
ATSC A53 Part 4 Closed Captions.
Definition: packet.h:242
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition: avcodec.h:1161
int nb_extended_buf
Number of elements in extended_buf.
Definition: frame.h:509
int ff_decode_bsfs_init(AVCodecContext *avctx)
Called during avcodec_open2() to initialize avctx->internal->bsf.
Definition: decode.c:204
Content light level (based on CTA-861.3).
Definition: frame.h:136
int num
Numerator.
Definition: rational.h:59
int size
Definition: packet.h:356
int av_codec_is_decoder(const AVCodec *codec)
Definition: utils.c:99
int initial_channels
Definition: internal.h:197
enum AVPixelFormat pix_fmt
Supported pixel format.
Definition: avcodec.h:2437
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:905
void(* hwaccel_priv_free)(void *priv)
Definition: decode.h:53
#define AV_CODEC_PROP_TEXT_SUB
Subtitle codec is text based.
Definition: codec_desc.h:102
static void frame_pool_free(void *opaque, uint8_t *data)
Definition: decode.c:1416
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:736
int samples
Definition: decode.c:64
static int decode_simple_internal(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:311
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:813
enum AVPixelFormat format
The pixel format identifying the underlying HW surface type.
Definition: hwcontext.h:209
Mastering display metadata associated with a video frame.
Definition: frame.h:119
unsigned num_rects
Definition: avcodec.h:2698
void av_frame_move_ref(AVFrame *dst, AVFrame *src)
Move everything contained in src to dst and reset src.
Definition: frame.c:583
enum AVMediaType type
Definition: codec.h:203
static int apply_param_change(AVCodecContext *avctx, const AVPacket *avpkt)
Definition: decode.c:67
static int recode_subtitle(AVCodecContext *avctx, AVPacket *outpkt, const AVPacket *inpkt)
Definition: decode.c:828
AVBufferPool * pools[4]
Pools for each data plane.
Definition: decode.c:53
int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
Set various frame properties from the codec context / packet data.
Definition: decode.c:1685
size_t crop_bottom
Definition: frame.h:661
static AVPacket pkt
int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub, int *got_sub_ptr, AVPacket *avpkt)
Decode a subtitle message.
Definition: decode.c:978
const struct AVHWAccel * hwaccel
Hardware accelerator in use.
Definition: avcodec.h:1690
int(* alloc_frame)(AVCodecContext *avctx, AVFrame *frame)
Allocate a custom buffer.
Definition: avcodec.h:2456
static int utf8_check(const uint8_t *str)
Definition: decode.c:886
int av_bprint_finalize(AVBPrint *buf, char **ret_str)
Finalize a print buffer.
Definition: bprint.c:235
static int apply_cropping(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:622
Mastering display metadata (based on SMPTE-2086:2014).
Definition: packet.h:222
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avcodec.h:649
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:2699
int(* uninit)(AVCodecContext *avctx)
Uninitialize the hwaccel private data.
Definition: avcodec.h:2548
static AVBufferRef * frame_pool_alloc(void)
Definition: decode.c:1427
#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: codec.h:75
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
int height
Definition: decode.c:59
enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *avctx, const enum AVPixelFormat *fmt)
Definition: decode.c:1067
enum AVSampleFormat sample_fmt
audio sample format
Definition: avcodec.h:1194
uint8_t
#define av_malloc(s)
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:190
int ff_attach_decode_data(AVFrame *frame)
Definition: decode.c:1830
int av_packet_unpack_dictionary(const uint8_t *data, int size, AVDictionary **dict)
Unpack a dictionary from side_data.
Definition: avpacket.c:529
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:279
size_t crop_left
Definition: frame.h:662
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:92
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: packet.h:373
This side data contains a 3x3 transformation matrix describing an affine transformation that needs to...
Definition: packet.h:108
#define AV_CODEC_FLAG_UNALIGNED
Allow decoders to produce frames with data planes that are not aligned to CPU requirements (e...
Definition: avcodec.h:271
#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:679
int ff_decode_get_packet(AVCodecContext *avctx, AVPacket *pkt)
Called by decoders to get the next packet for decoding.
Definition: decode.c:238
#define emms_c()
Definition: internal.h:55
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:393
enum AVPixelFormat pix_fmt
For decoders, a hardware pixel format which that decoder may be able to decode to if suitable hardwar...
Definition: codec.h:434
static AVFrame * frame
int planes
Definition: decode.c:62
const char data[16]
Definition: mxf.c:91
Structure to hold side data for an AVFrame.
Definition: frame.h:206
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:179
static void finish(void)
Definition: movenc.c:345
uint8_t * data
Definition: packet.h:355
#define FF_REGET_BUFFER_FLAG_READONLY
the returned buffer does not need to be writable
Definition: internal.h:291
#define AVERROR_EOF
End of file.
Definition: error.h:55
AVDictionary * metadata
metadata.
Definition: frame.h:586
int lowres
low resolution decoding, 1-> 1/2 size, 2->1/4 size
Definition: avcodec.h:1765
#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:2540
int initial_height
Definition: internal.h:195
int initial_format
Definition: internal.h:194
The data represents the AVSphericalMapping structure defined in libavutil/spherical.h.
Definition: frame.h:130
enum AVChromaLocation chroma_sample_location
This defines the location of chroma samples.
Definition: avcodec.h:1168
#define FFALIGN(x, a)
Definition: macros.h:48
#define av_log(a,...)
The buffer pool.
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:614
int av_sample_fmt_is_planar(enum AVSampleFormat sample_fmt)
Check if the sample format is planar.
Definition: samplefmt.c:112
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:88
AVRational pkt_timebase
Timebase in which pkt_dts/pts and AVPacket.dts/pts are.
Definition: avcodec.h:2083
AVBSFContext * bsf
Definition: internal.h:138
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
int width
Definition: frame.h:358
#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:816
void * post_process_opaque
Definition: decode.h:46
#define AV_BPRINT_SIZE_UNLIMITED
static int hwaccel_init(AVCodecContext *avctx, const AVCodecHWConfigInternal *hw_config)
Definition: decode.c:1230
static void validate_avframe_allocation(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:1794
#define AVERROR(e)
Definition: error.h:43
An AV_PKT_DATA_PARAM_CHANGE side data packet is laid out as follows:
Definition: packet.h:72
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:890
uint8_t * av_packet_get_side_data(const AVPacket *pkt, enum AVPacketSideDataType type, int *size)
Get side information from packet.
Definition: avpacket.c:353
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:203
ICC profile data consisting of an opaque octet buffer following the format described by ISO 15076-1...
Definition: packet.h:274
int64_t pts_correction_last_pts
Number of incorrect DTS values so far.
Definition: avcodec.h:2108
int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Identical in function to ff_get_buffer(), except it reuses the existing buffer if available...
Definition: decode.c:1961
int active_thread_type
Which multithreading methods are in use by the codec.
Definition: avcodec.h:1804
int methods
Bit set of AV_CODEC_HW_CONFIG_METHOD_* flags, describing the possible setup methods which can be used...
Definition: codec.h:439
The codec supports this format via the hw_device_ctx interface.
Definition: codec.h:393
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:1968
int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
Return decoded output data from a decoder.
Definition: decode.c:649
static int extract_packet_props(AVCodecInternal *avci, const AVPacket *pkt)
Definition: decode.c:145
AVFrame * buffer_frame
Definition: internal.h:174
int capabilities
Codec capabilities.
Definition: codec.h:209
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition: frame.h:544
#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: packet.h:338
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:606
enum AVColorSpace colorspace
YUV colorspace type.
Definition: frame.h:555
AVRational time_base_in
The timebase used for the timestamps of the input packets.
Definition: bsf.h:89
#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().
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:237
int side_data_elems
Definition: packet.h:367
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:29
int64_t max_pixels
The number of pixels per image to maximally accept.
Definition: avcodec.h:2256
int av_hwframe_ctx_init(AVBufferRef *ref)
Finalize the context before use.
Definition: hwcontext.c:333
enum AVHWDeviceType type
This field identifies the underlying API used for hardware access.
Definition: hwcontext.h:79
#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:502
#define fail()
Definition: checkasm.h:123
int av_frame_copy(AVFrame *dst, const AVFrame *src)
Copy the frame data from src to dst.
Definition: frame.c:800
const AVHWAccel * hwaccel
If this configuration uses a hwaccel, a pointer to it.
Definition: hwconfig.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:2554
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:361
int av_bsf_init(AVBSFContext *ctx)
Prepare the filter for use, after all the parameters and options have been set.
Definition: bsf.c:144
reference-counted frame API
uint64_t channel_layout
Audio channel layout.
Definition: avcodec.h:1237
uint32_t end_display_time
Definition: avcodec.h:2697
int64_t pts
Same as packet pts, in AV_TIME_BASE.
Definition: avcodec.h:2700
uint64_t channel_layout
Channel layout of the audio data.
Definition: frame.h:477
int props
Codec properties, a combination of AV_CODEC_PROP_* flags.
Definition: codec_desc.h:54
size_t crop_top
Definition: frame.h:660
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:199
int av_bsf_list_parse_str(const char *str, AVBSFContext **bsf_lst)
Parse string describing list of bitstream filters and create single AVBSFContext describing the whole...
Definition: bsf.c:519
int av_packet_copy_props(AVPacket *dst, const AVPacket *src)
Copy only "properties" fields from src to dst.
Definition: avpacket.c:571
The codec supports this format by some ad-hoc method.
Definition: codec.h:422
int channels
number of audio channels, only used for audio.
Definition: frame.h:606
int flags
Frame flags, a combination of AV_FRAME_FLAGS.
Definition: frame.h:537
int err_recognition
Error recognition; may misdetect some more or less valid parts as errors.
Definition: avcodec.h:1655
#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:1796
const char * name
Name of the hardware accelerated codec.
Definition: avcodec.h:2416
#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:505
int channels
Definition: decode.c:63
AVFrame * compat_decode_frame
Definition: internal.h:183
int width
picture width / height.
Definition: avcodec.h:699
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:2226
static int add_metadata_from_side_data(const AVPacket *avpkt, AVFrame *frame)
Definition: decode.c:1673
static int compat_decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, const AVPacket *pkt)
Definition: decode.c:725
AVPacket * in_pkt
Definition: internal.h:112
This side data should be associated with a video stream and corresponds to the AVSphericalMapping str...
Definition: packet.h:228
#define av_err2str(errnum)
Convenience macro, the return value should be used only directly in function arguments but never stan...
Definition: error.h:119
AVFormatContext * ctx
Definition: movenc.c:48
enum AVColorPrimaries color_primaries
Chromaticity coordinates of the source primaries.
Definition: avcodec.h:1140
AVFrameSideDataType
Definition: frame.h:48
#define AVERROR_INPUT_CHANGED
Input changed between calls. Reconfiguration is required. (can be OR-ed with AVERROR_OUTPUT_CHANGED) ...
Definition: error.h:73
uint16_t format
Definition: avcodec.h:2695
#define s(width, name)
Definition: cbs_vp9.c:257
The data contains an ICC profile as an opaque octet buffer following the format described by ISO 1507...
Definition: frame.h:143
#define FF_DEBUG_BUFFERS
Definition: avcodec.h:1633
#define AV_RL32
Definition: intreadwrite.h:146
int64_t reordered_opaque
opaque 64-bit number (generally a PTS) that will be reordered and output in AVFrame.reordered_opaque
Definition: avcodec.h:1683
#define AV_EF_EXPLODE
abort decoding on minor error detection
Definition: avcodec.h:1666
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: codec.h:316
DecodeSimpleContext ds
Definition: internal.h:137
char * sub_charenc
DTS of the last frame.
Definition: avcodec.h:2116
static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:1557
int draining
checks API usage: after codec draining, flush is required to resume operation
Definition: internal.h:167
#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:1785
int linesize[4]
Definition: decode.c:61
int sub_charenc_mode
Subtitles character encoding mode.
Definition: avcodec.h:2124
void avcodec_flush_buffers(AVCodecContext *avctx)
Reset the internal codec state / flush internal buffers.
Definition: utils.c:1086
#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:373
Content light level (based on CTA-861.3).
Definition: packet.h:235
int attribute_align_arg avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt)
Supply raw packet data as input to a decoder.
Definition: decode.c:586
#define attribute_align_arg
Definition: internal.h:62
int(* decode)(struct AVCodecContext *, void *outdata, int *outdata_size, struct AVPacket *avpkt)
Definition: codec.h:282
void(* post_process_opaque_free)(void *opaque)
Definition: decode.h:47
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
int av_bsf_send_packet(AVBSFContext *ctx, AVPacket *pkt)
Submit a packet for filtering.
Definition: bsf.c:197
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:253
int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
The default callback for AVCodecContext.get_buffer2().
Definition: decode.c:1649
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:534
int compat_decode_warned
Definition: internal.h:176
int64_t pkt_duration
duration of the corresponding packet, expressed in AVStream->time_base units, 0 if unknown...
Definition: frame.h:579
A list of zero terminated key/value strings.
Definition: packet.h:172
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:806
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:595
int sample_rate
samples per second
Definition: avcodec.h:1186
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:331
int initial_sample_rate
Definition: internal.h:196
int debug
debug
Definition: avcodec.h:1611
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:1854
main external API structure.
Definition: avcodec.h:526
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:605
int skip_samples_multiplier
Definition: internal.h:187
uint8_t * data
The data buffer.
Definition: buffer.h:89
int av_bsf_receive_packet(AVBSFContext *ctx, AVPacket *pkt)
Retrieve a filtered packet.
Definition: bsf.c:223
static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
Definition: decode.c:1924
void avsubtitle_free(AVSubtitle *sub)
Free all allocated data in the given subtitle struct.
Definition: utils.c:1130
AVRational sample_aspect_ratio
Sample aspect ratio for the video frame, 0/1 if unknown/unspecified.
Definition: frame.h:388
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: decode.c:1854
uint8_t * data
Definition: frame.h:208
#define AV_CODEC_PROP_BITMAP_SUB
Subtitle codec is bitmap based Decoded AVSubtitle data can be read from the AVSubtitleRect->pict fiel...
Definition: codec_desc.h:97
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
size_t crop_right
Definition: frame.h:663
int64_t max_samples
The number of samples per frame to maximally accept.
Definition: avcodec.h:2344
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:714
int64_t reordered_opaque
reordered opaque 64 bits (generally an integer or a double precision float PTS but can be anything)...
Definition: frame.h:467
int sample_rate
Sample rate of the audio data.
Definition: frame.h:472
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:1341
int showed_multi_packet_warning
Definition: internal.h:185
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:727
const char * av_hwdevice_get_type_name(enum AVHWDeviceType type)
Get the string name of an AVHWDeviceType.
Definition: hwcontext.c:92
#define AV_CODEC_CAP_SUBFRAMES
Codec can output multiple frames per AVPacket Normally demuxers return one frame at a time...
Definition: codec.h:93
void av_buffer_pool_uninit(AVBufferPool **ppool)
Mark the pool as being available for freeing.
Definition: buffer.c:276
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:1154
Rational number (pair of numerator and denominator).
Definition: rational.h:58
enum AVColorTransferCharacteristic color_trc
Color Transfer Characteristic.
Definition: avcodec.h:1147
#define CONFIG_MEMORY_POISONING
Definition: config.h:589
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:2133
Recommmends skipping the specified number of samples.
Definition: packet.h:156
This struct describes a set or pool of "hardware" frames (i.e.
Definition: hwcontext.h:124
int sub_text_format
Control the form of AVSubtitle.rects[N]->ass.
Definition: avcodec.h:2233
int skip_samples
Number of audio samples to skip at the start of the next decoded frame.
Definition: internal.h:157
#define STRIDE_ALIGN
Definition: internal.h:108
enum AVChromaLocation chroma_location
Definition: frame.h:557
int(* frame_params)(AVCodecContext *avctx, AVBufferRef *hw_frames_ctx)
Fill the given hw_frames context with current codec parameters.
Definition: avcodec.h:2569
int64_t best_effort_timestamp
frame timestamp estimated using various heuristics, in stream time base
Definition: frame.h:564
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:1357
AVBufferRef * pool
Definition: internal.h:133
#define AV_CODEC_FLAG_DROPCHANGED
Don&#39;t output frames whose parameters differ from first decoded frame in stream.
Definition: avcodec.h:292
int size
Size of data in bytes.
Definition: buffer.h:93
The codec supports this format by some internal method.
Definition: codec.h:413
Apply the maximum possible cropping, even if it requires setting the AVFrame.data[] entries to unalig...
Definition: frame.h:945
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
Definition: frame.c:554
static int64_t pts
#define SIZE_SPECIFIER
Definition: internal.h:264
#define flags(name, subs,...)
Definition: cbs_av1.c:565
This side data should be associated with an audio stream and contains ReplayGain information in form ...
Definition: packet.h:99
#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:1130
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:314
static void decode_data_free(void *opaque, uint8_t *data)
Definition: decode.c:1817
#define UTF8_MAX_BYTES
Definition: decode.c:827
attribute_deprecated int64_t pkt_pts
PTS copied from the AVPacket that was decoded to produce this frame.
Definition: frame.h:401
void av_bprint_clear(AVBPrint *buf)
Reset the string to "" but keep internal allocated data.
Definition: bprint.c:227
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:172
int64_t pkt_dts
DTS copied from the AVPacket that triggered returning this frame.
Definition: frame.h:409
A reference to a data buffer.
Definition: buffer.h:81
int extra_hw_frames
Definition: avcodec.h:2328
static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
Definition: decode.c:158
AVPacketSideData * side_data
Additional packet data that can be provided by the container.
Definition: packet.h:366
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:1181
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: packet.h:395
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:84
common internal api header.
common internal and external API header
if(ret< 0)
Definition: vf_mcdeint.c:279
AVBufferPool * av_buffer_pool_init(int size, AVBufferRef *(*alloc)(int size))
Allocate and initialize a buffer pool.
Definition: buffer.c:239
#define AV_HWACCEL_CODEC_CAP_EXPERIMENTAL
HWAccel is experimental and is thus avoided in favor of non experimental codecs.
Definition: avcodec.h:2576
#define AV_CODEC_CAP_PARAM_CHANGE
Codec supports changed parameters at any point.
Definition: codec.h:114
AVBufferRef * av_hwframe_ctx_alloc(AVBufferRef *device_ref_in)
Allocate an AVHWFramesContext tied to a given device context.
Definition: hwcontext.c:247
static void insert_ts(AVBPrint *buf, int ts)
Definition: decode.c:906
void * hwaccel_priv_data
hwaccel-specific private data
Definition: internal.h:162
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_S32, int32_t, AV_SAMPLE_FMT_S16, *(const int16_t *) pi *(1<< 16)) 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/(UINT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S64, *(const int64_t *) pi *(1.0/(UINT64_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 *(UINT64_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 *(UINT64_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 &&HAVE_MMX) 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,(const uint8_t **) in->ch+ch, off *(out-> planar
Definition: audioconvert.c:56
int caps_internal
Internal codec capabilities.
Definition: codec.h:310
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
uint64_t initial_channel_layout
Definition: internal.h:198
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
Definition: avcodec.h:215
static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
Definition: decode.c:1602
Formatted text, the ass field must be set by the decoder and is authoritative.
Definition: avcodec.h:2654
#define FF_PSEUDOPAL
Definition: internal.h:369
AVHWDeviceType
Definition: hwcontext.h:27
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:85
int channels
number of audio channels
Definition: avcodec.h:1187
struct AVCodecInternal * internal
Private context used for internal data.
Definition: avcodec.h:561
char * ass
0 terminated ASS/SSA compatible event line.
Definition: avcodec.h:2689
#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:529
int flags2
AV_CODEC_FLAG2_*.
Definition: avcodec.h:613
enum AVColorPrimaries color_primaries
Definition: frame.h:546
#define HAVE_THREADS
Definition: config.h:273
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Definition: packet.h:354
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:2109
size_t compat_decode_partial_size
Definition: internal.h:182
#define AV_CODEC_FLAG_TRUNCATED
Input bitstream might be truncated at a random location instead of only at frame boundaries.
Definition: avcodec.h:317
int frame_number
Frame counter, set by libavcodec.
Definition: avcodec.h:1217
static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:1445
int height
Definition: frame.h:358
#define av_freep(p)
int64_t pts_correction_num_faulty_pts
Current statistics for PTS correction.
Definition: avcodec.h:2106
enum AVColorTransferCharacteristic color_trc
Definition: frame.h:548
void av_bsf_free(AVBSFContext **pctx)
Free a bitstream filter context and everything associated with it; write NULL into the supplied point...
Definition: bsf.c:40
AVBufferRef * av_buffer_pool_get(AVBufferPool *pool)
Allocate a new AVBuffer, reusing an old buffer from the pool when available.
Definition: buffer.c:337
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: codec.h:446
#define FF_SUB_TEXT_FMT_ASS_WITH_TIMINGS
Definition: avcodec.h:2236
#define FF_SUB_CHARENC_MODE_IGNORE
neither convert the subtitles, nor check them for valid UTF-8
Definition: avcodec.h:2128
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:2465
ReplayGain information in the form of the AVReplayGain struct.
Definition: frame.h:76
enum AVSubtitleType type
Definition: avcodec.h:2680
uint8_t ** extended_data
pointers to the data planes/channels.
Definition: frame.h:347
int format
Definition: decode.c:58
AVBufferRef * hw_device_ctx
A reference to the AVHWDeviceContext describing the device which will be used by a hardware encoder/d...
Definition: avcodec.h:2278
int pkt_size
size of the corresponding packet containing the compressed frame.
Definition: frame.h:615
float min
Stereoscopic 3d metadata.
Definition: frame.h:63
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
static double val(void *priv, double ch)
Definition: aeval.c:76
This structure stores compressed data.
Definition: packet.h:332
AVCodecParameters * par_in
Parameters of the input stream.
Definition: bsf.h:77
#define AV_GET_BUFFER_FLAG_REF
The decoder will keep a reference to the frame and may reuse it later.
Definition: avcodec.h:509
int nb_samples
number of audio samples (per channel) described by this frame
Definition: frame.h:366
int strict_std_compliance
strictly follow the standard (MPEG-4, ...).
Definition: avcodec.h:1589
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:50
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: packet.h:348
enum AVPixelFormat sw_pix_fmt
Nominal unaccelerated pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:2076
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:659
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
static void hwaccel_uninit(AVCodecContext *avctx)
Definition: decode.c:1267
#define tb
Definition: regdef.h:68
#define AV_WL32(p, v)
Definition: intreadwrite.h:426
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
void * av_mallocz_array(size_t nmemb, size_t size)
Allocate a memory block for an array with av_mallocz().
Definition: mem.c:190
This side data should be associated with an audio stream and corresponds to enum AVAudioServiceType.
Definition: packet.h:120
static uint8_t tmp[11]
Definition: aes_ctr.c:26