FFmpeg  4.4.6
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 ret;
71  const uint8_t *data;
72  uint32_t flags;
73  int64_t val;
74 
76  if (!data)
77  return 0;
78 
79  if (!(avctx->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE)) {
80  av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
81  "changes, but PARAM_CHANGE side data was sent to it.\n");
82  ret = AVERROR(EINVAL);
83  goto fail2;
84  }
85 
86  if (size < 4)
87  goto fail;
88 
89  flags = bytestream_get_le32(&data);
90  size -= 4;
91 
93  if (size < 4)
94  goto fail;
95  val = bytestream_get_le32(&data);
96  if (val <= 0 || val > INT_MAX) {
97  av_log(avctx, AV_LOG_ERROR, "Invalid channel count");
98  ret = AVERROR_INVALIDDATA;
99  goto fail2;
100  }
101  avctx->channels = val;
102  size -= 4;
103  }
105  if (size < 8)
106  goto fail;
107  avctx->channel_layout = bytestream_get_le64(&data);
108  size -= 8;
109  }
111  if (size < 4)
112  goto fail;
113  val = bytestream_get_le32(&data);
114  if (val <= 0 || val > INT_MAX) {
115  av_log(avctx, AV_LOG_ERROR, "Invalid sample rate");
116  ret = AVERROR_INVALIDDATA;
117  goto fail2;
118  }
119  avctx->sample_rate = val;
120  size -= 4;
121  }
123  if (size < 8)
124  goto fail;
125  avctx->width = bytestream_get_le32(&data);
126  avctx->height = bytestream_get_le32(&data);
127  size -= 8;
128  ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
129  if (ret < 0)
130  goto fail2;
131  }
132 
133  return 0;
134 fail:
135  av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
136  ret = AVERROR_INVALIDDATA;
137 fail2:
138  if (ret < 0) {
139  av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
140  if (avctx->err_recognition & AV_EF_EXPLODE)
141  return ret;
142  }
143  return 0;
144 }
145 
146 #define IS_EMPTY(pkt) (!(pkt)->data)
147 
148 static int copy_packet_props(AVPacket *dst, const AVPacket *src)
149 {
150  int ret = av_packet_copy_props(dst, src);
151  if (ret < 0)
152  return ret;
153 
154  dst->size = src->size; // HACK: Needed for ff_decode_frame_props().
155  dst->data = (void*)1; // HACK: Needed for IS_EMPTY().
156 
157  return 0;
158 }
159 
161 {
162  AVPacket tmp = { 0 };
163  int ret = 0;
164 
165  if (IS_EMPTY(avci->last_pkt_props)) {
166  if (av_fifo_size(avci->pkt_props) >= sizeof(*pkt)) {
168  sizeof(*avci->last_pkt_props), NULL);
169  } else
170  return copy_packet_props(avci->last_pkt_props, pkt);
171  }
172 
173  if (av_fifo_space(avci->pkt_props) < sizeof(*pkt)) {
174  ret = av_fifo_grow(avci->pkt_props, sizeof(*pkt));
175  if (ret < 0)
176  return ret;
177  }
178 
179  ret = copy_packet_props(&tmp, pkt);
180  if (ret < 0)
181  return ret;
182 
183  av_fifo_generic_write(avci->pkt_props, &tmp, sizeof(tmp), NULL);
184 
185  return 0;
186 }
187 
189 {
190  AVCodecInternal *avci = avctx->internal;
191  int ret;
192 
193  if (avci->bsf)
194  return 0;
195 
196  ret = av_bsf_list_parse_str(avctx->codec->bsfs, &avci->bsf);
197  if (ret < 0) {
198  av_log(avctx, AV_LOG_ERROR, "Error parsing decoder bitstream filters '%s': %s\n", avctx->codec->bsfs, av_err2str(ret));
199  if (ret != AVERROR(ENOMEM))
200  ret = AVERROR_BUG;
201  goto fail;
202  }
203 
204  /* We do not currently have an API for passing the input timebase into decoders,
205  * but no filters used here should actually need it.
206  * So we make up some plausible-looking number (the MPEG 90kHz timebase) */
207  avci->bsf->time_base_in = (AVRational){ 1, 90000 };
208  ret = avcodec_parameters_from_context(avci->bsf->par_in, avctx);
209  if (ret < 0)
210  goto fail;
211 
212  ret = av_bsf_init(avci->bsf);
213  if (ret < 0)
214  goto fail;
215 
216  return 0;
217 fail:
218  av_bsf_free(&avci->bsf);
219  return ret;
220 }
221 
223 {
224  AVCodecInternal *avci = avctx->internal;
225  int ret;
226 
227  if (avci->draining)
228  return AVERROR_EOF;
229 
230  ret = av_bsf_receive_packet(avci->bsf, pkt);
231  if (ret == AVERROR_EOF)
232  avci->draining = 1;
233  if (ret < 0)
234  return ret;
235 
237  ret = extract_packet_props(avctx->internal, pkt);
238  if (ret < 0)
239  goto finish;
240  }
241 
242  ret = apply_param_change(avctx, pkt);
243  if (ret < 0)
244  goto finish;
245 
246 #if FF_API_OLD_ENCDEC
247  if (avctx->codec->receive_frame)
248  avci->compat_decode_consumed += pkt->size;
249 #endif
250 
251  return 0;
252 finish:
254  return ret;
255 }
256 
257 /**
258  * Attempt to guess proper monotonic timestamps for decoded video frames
259  * which might have incorrect times. Input timestamps may wrap around, in
260  * which case the output will as well.
261  *
262  * @param pts the pts field of the decoded AVPacket, as passed through
263  * AVFrame.pts
264  * @param dts the dts field of the decoded AVPacket
265  * @return one of the input values, may be AV_NOPTS_VALUE
266  */
268  int64_t reordered_pts, int64_t dts)
269 {
271 
272  if (dts != AV_NOPTS_VALUE) {
273  ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
274  ctx->pts_correction_last_dts = dts;
275  } else if (reordered_pts != AV_NOPTS_VALUE)
276  ctx->pts_correction_last_dts = reordered_pts;
277 
278  if (reordered_pts != AV_NOPTS_VALUE) {
279  ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
280  ctx->pts_correction_last_pts = reordered_pts;
281  } else if(dts != AV_NOPTS_VALUE)
282  ctx->pts_correction_last_pts = dts;
283 
284  if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
285  && reordered_pts != AV_NOPTS_VALUE)
286  pts = reordered_pts;
287  else
288  pts = dts;
289 
290  return pts;
291 }
292 
293 /*
294  * The core of the receive_frame_wrapper for the decoders implementing
295  * the simple API. Certain decoders might consume partial packets without
296  * returning any output, so this function needs to be called in a loop until it
297  * returns EAGAIN.
298  **/
299 static inline int decode_simple_internal(AVCodecContext *avctx, AVFrame *frame, int64_t *discarded_samples)
300 {
301  AVCodecInternal *avci = avctx->internal;
302  DecodeSimpleContext *ds = &avci->ds;
303  AVPacket *pkt = ds->in_pkt;
304  int got_frame, actual_got_frame;
305  int ret;
306 
307  if (!pkt->data && !avci->draining) {
309  ret = ff_decode_get_packet(avctx, pkt);
310  if (ret < 0 && ret != AVERROR_EOF)
311  return ret;
312  }
313 
314  // Some codecs (at least wma lossless) will crash when feeding drain packets
315  // after EOF was signaled.
316  if (avci->draining_done)
317  return AVERROR_EOF;
318 
319  if (!pkt->data &&
320  !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY ||
322  return AVERROR_EOF;
323 
324  got_frame = 0;
325 
327  ret = ff_thread_decode_frame(avctx, frame, &got_frame, pkt);
328  } else {
329  ret = avctx->codec->decode(avctx, frame, &got_frame, pkt);
330 
332  frame->pkt_dts = pkt->dts;
333  if (avctx->codec->type == AVMEDIA_TYPE_VIDEO) {
334  if(!avctx->has_b_frames)
335  frame->pkt_pos = pkt->pos;
336  //FIXME these should be under if(!avctx->has_b_frames)
337  /* get_buffer is supposed to set frame parameters */
338  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DR1)) {
340  if (!frame->width) frame->width = avctx->width;
341  if (!frame->height) frame->height = avctx->height;
342  if (frame->format == AV_PIX_FMT_NONE) frame->format = avctx->pix_fmt;
343  }
344  }
345  }
346  emms_c();
347  actual_got_frame = got_frame;
348 
349  if (avctx->codec->type == AVMEDIA_TYPE_VIDEO) {
351  got_frame = 0;
352  } else if (avctx->codec->type == AVMEDIA_TYPE_AUDIO) {
353  uint8_t *side;
354  buffer_size_t side_size;
355  uint32_t discard_padding = 0;
356  uint8_t skip_reason = 0;
357  uint8_t discard_reason = 0;
358 
359  if (ret >= 0 && got_frame) {
361  frame->format = avctx->sample_fmt;
362  if (!frame->channel_layout)
364  if (!frame->channels)
365  frame->channels = avctx->channels;
366  if (!frame->sample_rate)
367  frame->sample_rate = avctx->sample_rate;
368  }
369 
371  if(side && side_size>=10) {
372  avci->skip_samples = AV_RL32(side) * avci->skip_samples_multiplier;
373  discard_padding = AV_RL32(side + 4);
374  av_log(avctx, AV_LOG_DEBUG, "skip %d / discard %d samples due to side data\n",
375  avci->skip_samples, (int)discard_padding);
376  skip_reason = AV_RL8(side + 8);
377  discard_reason = AV_RL8(side + 9);
378  }
379 
380  if ((frame->flags & AV_FRAME_FLAG_DISCARD) && got_frame &&
381  !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
382  avci->skip_samples = FFMAX(0, avci->skip_samples - frame->nb_samples);
383  got_frame = 0;
384  *discarded_samples += frame->nb_samples;
385  }
386 
387  if (avci->skip_samples > 0 && got_frame &&
388  !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
389  if(frame->nb_samples <= avci->skip_samples){
390  got_frame = 0;
391  *discarded_samples += frame->nb_samples;
392  avci->skip_samples -= frame->nb_samples;
393  av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
394  avci->skip_samples);
395  } else {
397  frame->nb_samples - avci->skip_samples, avctx->channels, frame->format);
398  if(avctx->pkt_timebase.num && avctx->sample_rate) {
399  int64_t diff_ts = av_rescale_q(avci->skip_samples,
400  (AVRational){1, avctx->sample_rate},
401  avctx->pkt_timebase);
402  if(frame->pts!=AV_NOPTS_VALUE)
403  frame->pts += diff_ts;
404 #if FF_API_PKT_PTS
407  frame->pkt_pts += diff_ts;
409 #endif
411  frame->pkt_dts += diff_ts;
412  if (frame->pkt_duration >= diff_ts)
413  frame->pkt_duration -= diff_ts;
414  } else {
415  av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
416  }
417  av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
418  avci->skip_samples, frame->nb_samples);
419  *discarded_samples += avci->skip_samples;
420  frame->nb_samples -= avci->skip_samples;
421  avci->skip_samples = 0;
422  }
423  }
424 
425  if (discard_padding > 0 && discard_padding <= frame->nb_samples && got_frame &&
426  !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
427  if (discard_padding == frame->nb_samples) {
428  *discarded_samples += frame->nb_samples;
429  got_frame = 0;
430  } else {
431  if(avctx->pkt_timebase.num && avctx->sample_rate) {
432  int64_t diff_ts = av_rescale_q(frame->nb_samples - discard_padding,
433  (AVRational){1, avctx->sample_rate},
434  avctx->pkt_timebase);
435  frame->pkt_duration = diff_ts;
436  } else {
437  av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for discarded samples.\n");
438  }
439  av_log(avctx, AV_LOG_DEBUG, "discard %d/%d samples\n",
440  (int)discard_padding, frame->nb_samples);
441  frame->nb_samples -= discard_padding;
442  }
443  }
444 
445  if ((avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL) && got_frame) {
447  if (fside) {
448  AV_WL32(fside->data, avci->skip_samples);
449  AV_WL32(fside->data + 4, discard_padding);
450  AV_WL8(fside->data + 8, skip_reason);
451  AV_WL8(fside->data + 9, discard_reason);
452  avci->skip_samples = 0;
453  }
454  }
455  }
456 
457  if (avctx->codec->type == AVMEDIA_TYPE_AUDIO &&
459  ret >= 0 && ret != pkt->size && !(avctx->codec->capabilities & AV_CODEC_CAP_SUBFRAMES)) {
460  av_log(avctx, AV_LOG_WARNING, "Multiple frames in a packet.\n");
461  avci->showed_multi_packet_warning = 1;
462  }
463 
464  if (!got_frame)
466 
467  if (ret >= 0 && avctx->codec->type == AVMEDIA_TYPE_VIDEO && !(avctx->flags & AV_CODEC_FLAG_TRUNCATED))
468  ret = pkt->size;
469 
470 #if FF_API_AVCTX_TIMEBASE
471  if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
472  avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
473 #endif
474 
475  /* do not stop draining when actual_got_frame != 0 or ret < 0 */
476  /* got_frame == 0 but actual_got_frame != 0 when frame is discarded */
477  if (avci->draining && !actual_got_frame) {
478  if (ret < 0) {
479  /* prevent infinite loop if a decoder wrongly always return error on draining */
480  /* reasonable nb_errors_max = maximum b frames + thread count */
481  int nb_errors_max = 20 + (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME ?
482  avctx->thread_count : 1);
483 
484  if (avci->nb_draining_errors++ >= nb_errors_max) {
485  av_log(avctx, AV_LOG_ERROR, "Too many errors when draining, this is a bug. "
486  "Stop draining and force EOF.\n");
487  avci->draining_done = 1;
488  ret = AVERROR_BUG;
489  }
490  } else {
491  avci->draining_done = 1;
492  }
493  }
494 
495 #if FF_API_OLD_ENCDEC
496  avci->compat_decode_consumed += ret;
497 #endif
498 
499  if (ret >= pkt->size || ret < 0) {
502  } else {
503  int consumed = ret;
504 
505  pkt->data += consumed;
506  pkt->size -= consumed;
510  avci->last_pkt_props->size -= consumed; // See extract_packet_props() comment.
513  }
514  }
515 
516  if (got_frame)
517  av_assert0(frame->buf[0]);
518 
519  return ret < 0 ? ret : 0;
520 }
521 
523 {
524  int ret;
525  int64_t discarded_samples = 0;
526 
527  while (!frame->buf[0]) {
528  if (discarded_samples > avctx->max_samples)
529  return AVERROR(EAGAIN);
530  ret = decode_simple_internal(avctx, frame, &discarded_samples);
531  if (ret < 0)
532  return ret;
533  }
534 
535  return 0;
536 }
537 
539 {
540  AVCodecInternal *avci = avctx->internal;
541  int ret;
542 
543  av_assert0(!frame->buf[0]);
544 
545  if (avctx->codec->receive_frame) {
546  ret = avctx->codec->receive_frame(avctx, frame);
547  if (ret != AVERROR(EAGAIN))
549  } else
550  ret = decode_simple_receive_frame(avctx, frame);
551 
552  if (ret == AVERROR_EOF)
553  avci->draining_done = 1;
554 
556  IS_EMPTY(avci->last_pkt_props) && av_fifo_size(avci->pkt_props) >= sizeof(*avci->last_pkt_props))
558  avci->last_pkt_props, sizeof(*avci->last_pkt_props), NULL);
559 
560  if (!ret) {
562  frame->pts,
563  frame->pkt_dts);
564 
565  /* the only case where decode data is not set should be decoders
566  * that do not call ff_get_buffer() */
568  !(avctx->codec->capabilities & AV_CODEC_CAP_DR1));
569 
570  if (frame->private_ref) {
572 
573  if (fdd->post_process) {
574  ret = fdd->post_process(avctx, frame);
575  if (ret < 0) {
577  return ret;
578  }
579  }
580  }
581  }
582 
583  /* free the per-frame decode data */
585 
586  return ret;
587 }
588 
590 {
591  AVCodecInternal *avci = avctx->internal;
592  int ret;
593 
594  if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
595  return AVERROR(EINVAL);
596 
597  if (avctx->internal->draining)
598  return AVERROR_EOF;
599 
600  if (avpkt && !avpkt->size && avpkt->data)
601  return AVERROR(EINVAL);
602 
604  if (avpkt && (avpkt->data || avpkt->side_data_elems)) {
605  ret = av_packet_ref(avci->buffer_pkt, avpkt);
606  if (ret < 0)
607  return ret;
608  }
609 
610  ret = av_bsf_send_packet(avci->bsf, avci->buffer_pkt);
611  if (ret < 0) {
613  return ret;
614  }
615 
616  if (!avci->buffer_frame->buf[0]) {
617  ret = decode_receive_frame_internal(avctx, avci->buffer_frame);
618  if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
619  return ret;
620  }
621 
622  return 0;
623 }
624 
626 {
627  /* make sure we are noisy about decoders returning invalid cropping data */
628  if (frame->crop_left >= INT_MAX - frame->crop_right ||
629  frame->crop_top >= INT_MAX - frame->crop_bottom ||
632  av_log(avctx, AV_LOG_WARNING,
633  "Invalid cropping information set by a decoder: "
635  "(frame size %dx%d). This is a bug, please report it\n",
637  frame->width, frame->height);
638  frame->crop_left = 0;
639  frame->crop_right = 0;
640  frame->crop_top = 0;
641  frame->crop_bottom = 0;
642  return 0;
643  }
644 
645  if (!avctx->apply_cropping)
646  return 0;
647 
650 }
651 
653 {
654  AVCodecInternal *avci = avctx->internal;
655  int ret, changed;
656 
658 
659  if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
660  return AVERROR(EINVAL);
661 
662  if (avci->buffer_frame->buf[0]) {
664  } else {
665  ret = decode_receive_frame_internal(avctx, frame);
666  if (ret < 0)
667  return ret;
668  }
669 
670  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
671  ret = apply_cropping(avctx, frame);
672  if (ret < 0) {
674  return ret;
675  }
676  }
677 
678  avctx->frame_number++;
679 
680  if (avctx->flags & AV_CODEC_FLAG_DROPCHANGED) {
681 
682  if (avctx->frame_number == 1) {
683  avci->initial_format = frame->format;
684  switch(avctx->codec_type) {
685  case AVMEDIA_TYPE_VIDEO:
686  avci->initial_width = frame->width;
687  avci->initial_height = frame->height;
688  break;
689  case AVMEDIA_TYPE_AUDIO:
691  avctx->sample_rate;
694  break;
695  }
696  }
697 
698  if (avctx->frame_number > 1) {
699  changed = avci->initial_format != frame->format;
700 
701  switch(avctx->codec_type) {
702  case AVMEDIA_TYPE_VIDEO:
703  changed |= avci->initial_width != frame->width ||
704  avci->initial_height != frame->height;
705  break;
706  case AVMEDIA_TYPE_AUDIO:
707  changed |= avci->initial_sample_rate != frame->sample_rate ||
708  avci->initial_sample_rate != avctx->sample_rate ||
709  avci->initial_channels != frame->channels ||
711  break;
712  }
713 
714  if (changed) {
715  avci->changed_frames_dropped++;
716  av_log(avctx, AV_LOG_INFO, "dropped changed frame #%d pts %"PRId64
717  " drop count: %d \n",
718  avctx->frame_number, frame->pts,
719  avci->changed_frames_dropped);
721  return AVERROR_INPUT_CHANGED;
722  }
723  }
724  }
725  return 0;
726 }
727 
728 #if FF_API_OLD_ENCDEC
731 {
732  int ret;
733 
734  /* move the original frame to our backup */
735  av_frame_unref(avci->to_free);
737 
738  /* now copy everything except the AVBufferRefs back
739  * note that we make a COPY of the side data, so calling av_frame_free() on
740  * the caller's frame will work properly */
741  ret = av_frame_copy_props(frame, avci->to_free);
742  if (ret < 0)
743  return ret;
744 
745  memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
746  memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
747  if (avci->to_free->extended_data != avci->to_free->data) {
748  int planes = avci->to_free->channels;
749  int size = planes * sizeof(*frame->extended_data);
750 
751  if (!size) {
753  return AVERROR_BUG;
754  }
755 
757  if (!frame->extended_data) {
759  return AVERROR(ENOMEM);
760  }
761  memcpy(frame->extended_data, avci->to_free->extended_data,
762  size);
763  } else
765 
766  frame->format = avci->to_free->format;
767  frame->width = avci->to_free->width;
768  frame->height = avci->to_free->height;
771  frame->channels = avci->to_free->channels;
772 
773  return 0;
774 }
775 
777  int *got_frame, const AVPacket *pkt)
778 {
779  AVCodecInternal *avci = avctx->internal;
780  int ret = 0;
781 
783 
784  if (avci->draining_done && pkt && pkt->size != 0) {
785  av_log(avctx, AV_LOG_WARNING, "Got unexpected packet after EOF\n");
786  avcodec_flush_buffers(avctx);
787  }
788 
789  *got_frame = 0;
790 
791  if (avci->compat_decode_partial_size > 0 &&
792  avci->compat_decode_partial_size != pkt->size) {
793  av_log(avctx, AV_LOG_ERROR,
794  "Got unexpected packet size after a partial decode\n");
795  ret = AVERROR(EINVAL);
796  goto finish;
797  }
798 
799  if (!avci->compat_decode_partial_size) {
800  ret = avcodec_send_packet(avctx, pkt);
801  if (ret == AVERROR_EOF)
802  ret = 0;
803  else if (ret == AVERROR(EAGAIN)) {
804  /* we fully drain all the output in each decode call, so this should not
805  * ever happen */
806  ret = AVERROR_BUG;
807  goto finish;
808  } else if (ret < 0)
809  goto finish;
810  }
811 
812  while (ret >= 0) {
813  ret = avcodec_receive_frame(avctx, frame);
814  if (ret < 0) {
815  if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
816  ret = 0;
817  goto finish;
818  }
819 
820  if (frame != avci->compat_decode_frame) {
821  if (!avctx->refcounted_frames) {
822  ret = unrefcount_frame(avci, frame);
823  if (ret < 0)
824  goto finish;
825  }
826 
827  *got_frame = 1;
828  frame = avci->compat_decode_frame;
829  } else {
830  if (!avci->compat_decode_warned) {
831  av_log(avctx, AV_LOG_WARNING, "The deprecated avcodec_decode_* "
832  "API cannot return all the frames for this decoder. "
833  "Some frames will be dropped. Update your code to the "
834  "new decoding API to fix this.\n");
835  avci->compat_decode_warned = 1;
836  }
837  }
838 
839  if (avci->draining || (!avctx->codec->bsfs && avci->compat_decode_consumed < pkt->size))
840  break;
841  }
842 
843 finish:
844  if (ret == 0) {
845  /* if there are any bsfs then assume full packet is always consumed */
846  if (avctx->codec->bsfs)
847  ret = pkt->size;
848  else
849  ret = FFMIN(avci->compat_decode_consumed, pkt->size);
850  }
851  avci->compat_decode_consumed = 0;
852  avci->compat_decode_partial_size = (ret >= 0) ? pkt->size - ret : 0;
853 
854  return ret;
855 }
856 
858  int *got_picture_ptr,
859  const AVPacket *avpkt)
860 {
861  return compat_decode(avctx, picture, got_picture_ptr, avpkt);
862 }
863 
865  AVFrame *frame,
866  int *got_frame_ptr,
867  const AVPacket *avpkt)
868 {
869  return compat_decode(avctx, frame, got_frame_ptr, avpkt);
870 }
872 #endif
873 
875 {
876  memset(sub, 0, sizeof(*sub));
877  sub->pts = AV_NOPTS_VALUE;
878 }
879 
880 #define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
881 static int recode_subtitle(AVCodecContext *avctx, AVPacket **outpkt,
882  AVPacket *inpkt, AVPacket *buf_pkt)
883 {
884 #if CONFIG_ICONV
885  iconv_t cd = (iconv_t)-1;
886  int ret = 0;
887  char *inb, *outb;
888  size_t inl, outl;
889 #endif
890 
891  if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER || inpkt->size == 0) {
892  *outpkt = inpkt;
893  return 0;
894  }
895 
896 #if CONFIG_ICONV
897  inb = inpkt->data;
898  inl = inpkt->size;
899 
900  if (inl >= INT_MAX / UTF8_MAX_BYTES - AV_INPUT_BUFFER_PADDING_SIZE) {
901  av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n");
902  return AVERROR(ERANGE);
903  }
904 
905  cd = iconv_open("UTF-8", avctx->sub_charenc);
906  av_assert0(cd != (iconv_t)-1);
907 
908  ret = av_new_packet(buf_pkt, inl * UTF8_MAX_BYTES);
909  if (ret < 0)
910  goto end;
911  ret = av_packet_copy_props(buf_pkt, inpkt);
912  if (ret < 0)
913  goto end;
914  outb = buf_pkt->data;
915  outl = buf_pkt->size;
916 
917  if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
918  iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
919  outl >= buf_pkt->size || inl != 0) {
920  ret = FFMIN(AVERROR(errno), -1);
921  av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
922  "from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
923  goto end;
924  }
925  buf_pkt->size -= outl;
926  memset(buf_pkt->data + buf_pkt->size, 0, outl);
927  *outpkt = buf_pkt;
928 
929  ret = 0;
930 end:
931  if (ret < 0)
932  av_packet_unref(buf_pkt);
933  if (cd != (iconv_t)-1)
934  iconv_close(cd);
935  return ret;
936 #else
937  av_log(avctx, AV_LOG_ERROR, "requesting subtitles recoding without iconv");
938  return AVERROR(EINVAL);
939 #endif
940 }
941 
942 static int utf8_check(const uint8_t *str)
943 {
944  const uint8_t *byte;
945  uint32_t codepoint, min;
946 
947  while (*str) {
948  byte = str;
949  GET_UTF8(codepoint, *(byte++), return 0;);
950  min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
951  1 << (5 * (byte - str) - 4);
952  if (codepoint < min || codepoint >= 0x110000 ||
953  codepoint == 0xFFFE /* BOM */ ||
954  codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
955  return 0;
956  str = byte;
957  }
958  return 1;
959 }
960 
961 #if FF_API_ASS_TIMING
962 static void insert_ts(AVBPrint *buf, int ts)
963 {
964  if (ts == -1) {
965  av_bprintf(buf, "9:59:59.99,");
966  } else {
967  int h, m, s;
968 
969  h = ts/360000; ts -= 360000*h;
970  m = ts/ 6000; ts -= 6000*m;
971  s = ts/ 100; ts -= 100*s;
972  av_bprintf(buf, "%d:%02d:%02d.%02d,", h, m, s, ts);
973  }
974 }
975 
977 {
978  int i;
979  AVBPrint buf;
980 
982 
983  for (i = 0; i < sub->num_rects; i++) {
984  char *final_dialog;
985  const char *dialog;
986  AVSubtitleRect *rect = sub->rects[i];
987  int ts_start, ts_duration = -1;
988  long int layer;
989 
990  if (rect->type != SUBTITLE_ASS || !strncmp(rect->ass, "Dialogue: ", 10))
991  continue;
992 
993  av_bprint_clear(&buf);
994 
995  /* skip ReadOrder */
996  dialog = strchr(rect->ass, ',');
997  if (!dialog)
998  continue;
999  dialog++;
1000 
1001  /* extract Layer or Marked */
1002  layer = strtol(dialog, (char**)&dialog, 10);
1003  if (*dialog != ',')
1004  continue;
1005  dialog++;
1006 
1007  /* rescale timing to ASS time base (ms) */
1008  ts_start = av_rescale_q(pkt->pts, tb, av_make_q(1, 100));
1009  if (pkt->duration != -1)
1010  ts_duration = av_rescale_q(pkt->duration, tb, av_make_q(1, 100));
1011  sub->end_display_time = FFMAX(sub->end_display_time, 10 * ts_duration);
1012 
1013  /* construct ASS (standalone file form with timestamps) string */
1014  av_bprintf(&buf, "Dialogue: %ld,", layer);
1015  insert_ts(&buf, ts_start);
1016  insert_ts(&buf, ts_duration == -1 ? -1 : ts_start + ts_duration);
1017  av_bprintf(&buf, "%s\r\n", dialog);
1018 
1019  final_dialog = av_strdup(buf.str);
1020  if (!av_bprint_is_complete(&buf) || !final_dialog) {
1021  av_freep(&final_dialog);
1022  av_bprint_finalize(&buf, NULL);
1023  return AVERROR(ENOMEM);
1024  }
1025  av_freep(&rect->ass);
1026  rect->ass = final_dialog;
1027  }
1028 
1029  av_bprint_finalize(&buf, NULL);
1030  return 0;
1031 }
1032 #endif
1033 
1035  int *got_sub_ptr,
1036  AVPacket *avpkt)
1037 {
1038  int ret = 0;
1039 
1040  if (!avpkt->data && avpkt->size) {
1041  av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
1042  return AVERROR(EINVAL);
1043  }
1044  if (!avctx->codec)
1045  return AVERROR(EINVAL);
1046  if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
1047  av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
1048  return AVERROR(EINVAL);
1049  }
1050 
1051  *got_sub_ptr = 0;
1053 
1054  if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size) {
1055  AVCodecInternal *avci = avctx->internal;
1056  AVPacket *pkt;
1057 
1058  ret = recode_subtitle(avctx, &pkt, avpkt, avci->buffer_pkt);
1059  if (ret < 0)
1060  return ret;
1061 
1062  if (avctx->pkt_timebase.num && avpkt->pts != AV_NOPTS_VALUE)
1063  sub->pts = av_rescale_q(avpkt->pts,
1064  avctx->pkt_timebase, AV_TIME_BASE_Q);
1065  ret = avctx->codec->decode(avctx, sub, got_sub_ptr, pkt);
1066  av_assert1((ret >= 0) >= !!*got_sub_ptr &&
1067  !!*got_sub_ptr >= !!sub->num_rects);
1068 
1069 #if FF_API_ASS_TIMING
1071  && *got_sub_ptr && sub->num_rects) {
1072  const AVRational tb = avctx->pkt_timebase.num ? avctx->pkt_timebase
1073  : avctx->time_base;
1074  int err = convert_sub_to_old_ass_form(sub, avpkt, tb);
1075  if (err < 0)
1076  ret = err;
1077  }
1078 #endif
1079 
1080  if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
1081  avctx->pkt_timebase.num) {
1082  AVRational ms = { 1, 1000 };
1083  sub->end_display_time = av_rescale_q(avpkt->duration,
1084  avctx->pkt_timebase, ms);
1085  }
1086 
1088  sub->format = 0;
1089  else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB)
1090  sub->format = 1;
1091 
1092  for (unsigned i = 0; i < sub->num_rects; i++) {
1094  sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
1095  av_log(avctx, AV_LOG_ERROR,
1096  "Invalid UTF-8 in decoded subtitles text; "
1097  "maybe missing -sub_charenc option\n");
1099  ret = AVERROR_INVALIDDATA;
1100  break;
1101  }
1102  }
1103 
1104  if (*got_sub_ptr)
1105  avctx->frame_number++;
1106 
1107  if (pkt == avci->buffer_pkt) // did we recode?
1108  av_packet_unref(avci->buffer_pkt);
1109  }
1110 
1111  return ret;
1112 }
1113 
1115  const enum AVPixelFormat *fmt)
1116 {
1117  const AVPixFmtDescriptor *desc;
1118  const AVCodecHWConfig *config;
1119  int i, n;
1120 
1121  // If a device was supplied when the codec was opened, assume that the
1122  // user wants to use it.
1123  if (avctx->hw_device_ctx && avctx->codec->hw_configs) {
1124  AVHWDeviceContext *device_ctx =
1126  for (i = 0;; i++) {
1127  config = &avctx->codec->hw_configs[i]->public;
1128  if (!config)
1129  break;
1130  if (!(config->methods &
1132  continue;
1133  if (device_ctx->type != config->device_type)
1134  continue;
1135  for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++) {
1136  if (config->pix_fmt == fmt[n])
1137  return fmt[n];
1138  }
1139  }
1140  }
1141  // No device or other setup, so we have to choose from things which
1142  // don't any other external information.
1143 
1144  // If the last element of the list is a software format, choose it
1145  // (this should be best software format if any exist).
1146  for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++);
1147  desc = av_pix_fmt_desc_get(fmt[n - 1]);
1148  if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
1149  return fmt[n - 1];
1150 
1151  // Finally, traverse the list in order and choose the first entry
1152  // with no external dependencies (if there is no hardware configuration
1153  // information available then this just picks the first entry).
1154  for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++) {
1155  for (i = 0;; i++) {
1156  config = avcodec_get_hw_config(avctx->codec, i);
1157  if (!config)
1158  break;
1159  if (config->pix_fmt == fmt[n])
1160  break;
1161  }
1162  if (!config) {
1163  // No specific config available, so the decoder must be able
1164  // to handle this format without any additional setup.
1165  return fmt[n];
1166  }
1168  // Usable with only internal setup.
1169  return fmt[n];
1170  }
1171  }
1172 
1173  // Nothing is usable, give up.
1174  return AV_PIX_FMT_NONE;
1175 }
1176 
1178  enum AVHWDeviceType dev_type)
1179 {
1180  AVHWDeviceContext *device_ctx;
1181  AVHWFramesContext *frames_ctx;
1182  int ret;
1183 
1184  if (!avctx->hwaccel)
1185  return AVERROR(ENOSYS);
1186 
1187  if (avctx->hw_frames_ctx)
1188  return 0;
1189  if (!avctx->hw_device_ctx) {
1190  av_log(avctx, AV_LOG_ERROR, "A hardware frames or device context is "
1191  "required for hardware accelerated decoding.\n");
1192  return AVERROR(EINVAL);
1193  }
1194 
1195  device_ctx = (AVHWDeviceContext *)avctx->hw_device_ctx->data;
1196  if (device_ctx->type != dev_type) {
1197  av_log(avctx, AV_LOG_ERROR, "Device type %s expected for hardware "
1198  "decoding, but got %s.\n", av_hwdevice_get_type_name(dev_type),
1199  av_hwdevice_get_type_name(device_ctx->type));
1200  return AVERROR(EINVAL);
1201  }
1202 
1204  avctx->hw_device_ctx,
1205  avctx->hwaccel->pix_fmt,
1206  &avctx->hw_frames_ctx);
1207  if (ret < 0)
1208  return ret;
1209 
1210  frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
1211 
1212 
1213  if (frames_ctx->initial_pool_size) {
1214  // We guarantee 4 base work surfaces. The function above guarantees 1
1215  // (the absolute minimum), so add the missing count.
1216  frames_ctx->initial_pool_size += 3;
1217  }
1218 
1219  ret = av_hwframe_ctx_init(avctx->hw_frames_ctx);
1220  if (ret < 0) {
1221  av_buffer_unref(&avctx->hw_frames_ctx);
1222  return ret;
1223  }
1224 
1225  return 0;
1226 }
1227 
1229  AVBufferRef *device_ref,
1231  AVBufferRef **out_frames_ref)
1232 {
1233  AVBufferRef *frames_ref = NULL;
1234  const AVCodecHWConfigInternal *hw_config;
1235  const AVHWAccel *hwa;
1236  int i, ret;
1237 
1238  for (i = 0;; i++) {
1239  hw_config = avctx->codec->hw_configs[i];
1240  if (!hw_config)
1241  return AVERROR(ENOENT);
1242  if (hw_config->public.pix_fmt == hw_pix_fmt)
1243  break;
1244  }
1245 
1246  hwa = hw_config->hwaccel;
1247  if (!hwa || !hwa->frame_params)
1248  return AVERROR(ENOENT);
1249 
1250  frames_ref = av_hwframe_ctx_alloc(device_ref);
1251  if (!frames_ref)
1252  return AVERROR(ENOMEM);
1253 
1254  ret = hwa->frame_params(avctx, frames_ref);
1255  if (ret >= 0) {
1256  AVHWFramesContext *frames_ctx = (AVHWFramesContext*)frames_ref->data;
1257 
1258  if (frames_ctx->initial_pool_size) {
1259  // If the user has requested that extra output surfaces be
1260  // available then add them here.
1261  if (avctx->extra_hw_frames > 0)
1262  frames_ctx->initial_pool_size += avctx->extra_hw_frames;
1263 
1264  // If frame threading is enabled then an extra surface per thread
1265  // is also required.
1266  if (avctx->active_thread_type & FF_THREAD_FRAME)
1267  frames_ctx->initial_pool_size += avctx->thread_count;
1268  }
1269 
1270  *out_frames_ref = frames_ref;
1271  } else {
1272  av_buffer_unref(&frames_ref);
1273  }
1274  return ret;
1275 }
1276 
1277 static int hwaccel_init(AVCodecContext *avctx,
1278  const AVCodecHWConfigInternal *hw_config)
1279 {
1280  const AVHWAccel *hwaccel;
1281  int err;
1282 
1283  hwaccel = hw_config->hwaccel;
1286  av_log(avctx, AV_LOG_WARNING, "Ignoring experimental hwaccel: %s\n",
1287  hwaccel->name);
1288  return AVERROR_PATCHWELCOME;
1289  }
1290 
1291  if (hwaccel->priv_data_size) {
1292  avctx->internal->hwaccel_priv_data =
1293  av_mallocz(hwaccel->priv_data_size);
1294  if (!avctx->internal->hwaccel_priv_data)
1295  return AVERROR(ENOMEM);
1296  }
1297 
1298  avctx->hwaccel = hwaccel;
1299  if (hwaccel->init) {
1300  err = hwaccel->init(avctx);
1301  if (err < 0) {
1302  av_log(avctx, AV_LOG_ERROR, "Failed setup for format %s: "
1303  "hwaccel initialisation returned error.\n",
1304  av_get_pix_fmt_name(hw_config->public.pix_fmt));
1306  avctx->hwaccel = NULL;
1307  return err;
1308  }
1309  }
1310 
1311  return 0;
1312 }
1313 
1314 static void hwaccel_uninit(AVCodecContext *avctx)
1315 {
1316  if (avctx->hwaccel && avctx->hwaccel->uninit)
1317  avctx->hwaccel->uninit(avctx);
1318 
1320 
1321  avctx->hwaccel = NULL;
1322 
1323  av_buffer_unref(&avctx->hw_frames_ctx);
1324 }
1325 
1326 int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
1327 {
1328  const AVPixFmtDescriptor *desc;
1329  enum AVPixelFormat *choices;
1330  enum AVPixelFormat ret, user_choice;
1331  const AVCodecHWConfigInternal *hw_config;
1332  const AVCodecHWConfig *config;
1333  int i, n, err;
1334 
1335  // Find end of list.
1336  for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++);
1337  // Must contain at least one entry.
1338  av_assert0(n >= 1);
1339  // If a software format is available, it must be the last entry.
1340  desc = av_pix_fmt_desc_get(fmt[n - 1]);
1341  if (desc->flags & AV_PIX_FMT_FLAG_HWACCEL) {
1342  // No software format is available.
1343  } else {
1344  avctx->sw_pix_fmt = fmt[n - 1];
1345  }
1346 
1347  choices = av_malloc_array(n + 1, sizeof(*choices));
1348  if (!choices)
1349  return AV_PIX_FMT_NONE;
1350 
1351  memcpy(choices, fmt, (n + 1) * sizeof(*choices));
1352 
1353  for (;;) {
1354  // Remove the previous hwaccel, if there was one.
1355  hwaccel_uninit(avctx);
1356 
1357  user_choice = avctx->get_format(avctx, choices);
1358  if (user_choice == AV_PIX_FMT_NONE) {
1359  // Explicitly chose nothing, give up.
1360  ret = AV_PIX_FMT_NONE;
1361  break;
1362  }
1363 
1364  desc = av_pix_fmt_desc_get(user_choice);
1365  if (!desc) {
1366  av_log(avctx, AV_LOG_ERROR, "Invalid format returned by "
1367  "get_format() callback.\n");
1368  ret = AV_PIX_FMT_NONE;
1369  break;
1370  }
1371  av_log(avctx, AV_LOG_DEBUG, "Format %s chosen by get_format().\n",
1372  desc->name);
1373 
1374  for (i = 0; i < n; i++) {
1375  if (choices[i] == user_choice)
1376  break;
1377  }
1378  if (i == n) {
1379  av_log(avctx, AV_LOG_ERROR, "Invalid return from get_format(): "
1380  "%s not in possible list.\n", desc->name);
1381  ret = AV_PIX_FMT_NONE;
1382  break;
1383  }
1384 
1385  if (avctx->codec->hw_configs) {
1386  for (i = 0;; i++) {
1387  hw_config = avctx->codec->hw_configs[i];
1388  if (!hw_config)
1389  break;
1390  if (hw_config->public.pix_fmt == user_choice)
1391  break;
1392  }
1393  } else {
1394  hw_config = NULL;
1395  }
1396 
1397  if (!hw_config) {
1398  // No config available, so no extra setup required.
1399  ret = user_choice;
1400  break;
1401  }
1402  config = &hw_config->public;
1403 
1404  if (config->methods &
1406  avctx->hw_frames_ctx) {
1407  const AVHWFramesContext *frames_ctx =
1409  if (frames_ctx->format != user_choice) {
1410  av_log(avctx, AV_LOG_ERROR, "Invalid setup for format %s: "
1411  "does not match the format of the provided frames "
1412  "context.\n", desc->name);
1413  goto try_again;
1414  }
1415  } else if (config->methods &
1417  avctx->hw_device_ctx) {
1418  const AVHWDeviceContext *device_ctx =
1420  if (device_ctx->type != config->device_type) {
1421  av_log(avctx, AV_LOG_ERROR, "Invalid setup for format %s: "
1422  "does not match the type of the provided device "
1423  "context.\n", desc->name);
1424  goto try_again;
1425  }
1426  } else if (config->methods &
1428  // Internal-only setup, no additional configuration.
1429  } else if (config->methods &
1431  // Some ad-hoc configuration we can't see and can't check.
1432  } else {
1433  av_log(avctx, AV_LOG_ERROR, "Invalid setup for format %s: "
1434  "missing configuration.\n", desc->name);
1435  goto try_again;
1436  }
1437  if (hw_config->hwaccel) {
1438  av_log(avctx, AV_LOG_DEBUG, "Format %s requires hwaccel "
1439  "initialisation.\n", desc->name);
1440  err = hwaccel_init(avctx, hw_config);
1441  if (err < 0)
1442  goto try_again;
1443  }
1444  ret = user_choice;
1445  break;
1446 
1447  try_again:
1448  av_log(avctx, AV_LOG_DEBUG, "Format %s not usable, retrying "
1449  "get_format() without it.\n", desc->name);
1450  for (i = 0; i < n; i++) {
1451  if (choices[i] == user_choice)
1452  break;
1453  }
1454  for (; i + 1 < n; i++)
1455  choices[i] = choices[i + 1];
1456  --n;
1457  }
1458 
1459  av_freep(&choices);
1460  return ret;
1461 }
1462 
1463 static void frame_pool_free(void *opaque, uint8_t *data)
1464 {
1465  FramePool *pool = (FramePool*)data;
1466  int i;
1467 
1468  for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
1469  av_buffer_pool_uninit(&pool->pools[i]);
1470 
1471  av_freep(&data);
1472 }
1473 
1475 {
1476  FramePool *pool = av_mallocz(sizeof(*pool));
1477  AVBufferRef *buf;
1478 
1479  if (!pool)
1480  return NULL;
1481 
1482  buf = av_buffer_create((uint8_t*)pool, sizeof(*pool),
1483  frame_pool_free, NULL, 0);
1484  if (!buf) {
1485  av_freep(&pool);
1486  return NULL;
1487  }
1488 
1489  return buf;
1490 }
1491 
1493 {
1494  FramePool *pool = avctx->internal->pool ?
1495  (FramePool*)avctx->internal->pool->data : NULL;
1496  AVBufferRef *pool_buf;
1497  int i, ret, ch, planes;
1498 
1499  if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
1501  ch = frame->channels;
1502  planes = planar ? ch : 1;
1503  }
1504 
1505  if (pool && pool->format == frame->format) {
1506  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO &&
1507  pool->width == frame->width && pool->height == frame->height)
1508  return 0;
1509  if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && pool->planes == planes &&
1510  pool->channels == ch && frame->nb_samples == pool->samples)
1511  return 0;
1512  }
1513 
1514  pool_buf = frame_pool_alloc();
1515  if (!pool_buf)
1516  return AVERROR(ENOMEM);
1517  pool = (FramePool*)pool_buf->data;
1518 
1519  switch (avctx->codec_type) {
1520  case AVMEDIA_TYPE_VIDEO: {
1521  int linesize[4];
1522  int w = frame->width;
1523  int h = frame->height;
1524  int unaligned;
1525  ptrdiff_t linesize1[4];
1526  size_t size[4];
1527 
1528  avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
1529 
1530  do {
1531  // NOTE: do not align linesizes individually, this breaks e.g. assumptions
1532  // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
1533  ret = av_image_fill_linesizes(linesize, avctx->pix_fmt, w);
1534  if (ret < 0)
1535  goto fail;
1536  // increase alignment of w for next try (rhs gives the lowest bit set in w)
1537  w += w & ~(w - 1);
1538 
1539  unaligned = 0;
1540  for (i = 0; i < 4; i++)
1541  unaligned |= linesize[i] % pool->stride_align[i];
1542  } while (unaligned);
1543 
1544  for (i = 0; i < 4; i++)
1545  linesize1[i] = linesize[i];
1546  ret = av_image_fill_plane_sizes(size, avctx->pix_fmt, h, linesize1);
1547  if (ret < 0)
1548  goto fail;
1549 
1550  for (i = 0; i < 4; i++) {
1551  pool->linesize[i] = linesize[i];
1552  if (size[i]) {
1553  if (size[i] > INT_MAX - (16 + STRIDE_ALIGN - 1)) {
1554  ret = AVERROR(EINVAL);
1555  goto fail;
1556  }
1557  pool->pools[i] = av_buffer_pool_init(size[i] + 16 + STRIDE_ALIGN - 1,
1559  NULL :
1561  if (!pool->pools[i]) {
1562  ret = AVERROR(ENOMEM);
1563  goto fail;
1564  }
1565  }
1566  }
1567  pool->format = frame->format;
1568  pool->width = frame->width;
1569  pool->height = frame->height;
1570 
1571  break;
1572  }
1573  case AVMEDIA_TYPE_AUDIO: {
1574  ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
1575  frame->nb_samples, frame->format, 0);
1576  if (ret < 0)
1577  goto fail;
1578 
1579  pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
1580  if (!pool->pools[0]) {
1581  ret = AVERROR(ENOMEM);
1582  goto fail;
1583  }
1584 
1585  pool->format = frame->format;
1586  pool->planes = planes;
1587  pool->channels = ch;
1588  pool->samples = frame->nb_samples;
1589  break;
1590  }
1591  default: av_assert0(0);
1592  }
1593 
1594  av_buffer_unref(&avctx->internal->pool);
1595  avctx->internal->pool = pool_buf;
1596 
1597  return 0;
1598 fail:
1599  av_buffer_unref(&pool_buf);
1600  return ret;
1601 }
1602 
1604 {
1605  FramePool *pool = (FramePool*)avctx->internal->pool->data;
1606  int planes = pool->planes;
1607  int i;
1608 
1609  frame->linesize[0] = pool->linesize[0];
1610 
1615  sizeof(*frame->extended_buf));
1616  if (!frame->extended_data || !frame->extended_buf) {
1619  return AVERROR(ENOMEM);
1620  }
1621  } else {
1624  }
1625 
1626  for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
1627  frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
1628  if (!frame->buf[i])
1629  goto fail;
1630  frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
1631  }
1632  for (i = 0; i < frame->nb_extended_buf; i++) {
1634  if (!frame->extended_buf[i])
1635  goto fail;
1637  }
1638 
1639  if (avctx->debug & FF_DEBUG_BUFFERS)
1640  av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
1641 
1642  return 0;
1643 fail:
1645  return AVERROR(ENOMEM);
1646 }
1647 
1649 {
1650  FramePool *pool = (FramePool*)s->internal->pool->data;
1652  int i;
1653 
1654  if (pic->data[0] || pic->data[1] || pic->data[2] || pic->data[3]) {
1655  av_log(s, AV_LOG_ERROR, "pic->data[*]!=NULL in avcodec_default_get_buffer\n");
1656  return -1;
1657  }
1658 
1659  if (!desc) {
1661  "Unable to get pixel format descriptor for format %s\n",
1662  av_get_pix_fmt_name(pic->format));
1663  return AVERROR(EINVAL);
1664  }
1665 
1666  memset(pic->data, 0, sizeof(pic->data));
1667  pic->extended_data = pic->data;
1668 
1669  for (i = 0; i < 4 && pool->pools[i]; i++) {
1670  pic->linesize[i] = pool->linesize[i];
1671 
1672  pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
1673  if (!pic->buf[i])
1674  goto fail;
1675 
1676  pic->data[i] = pic->buf[i]->data;
1677  }
1678  for (; i < AV_NUM_DATA_POINTERS; i++) {
1679  pic->data[i] = NULL;
1680  pic->linesize[i] = 0;
1681  }
1682  if (desc->flags & AV_PIX_FMT_FLAG_PAL ||
1683  ((desc->flags & FF_PSEUDOPAL) && pic->data[1]))
1684  avpriv_set_systematic_pal2((uint32_t *)pic->data[1], pic->format);
1685 
1686  if (s->debug & FF_DEBUG_BUFFERS)
1687  av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
1688 
1689  return 0;
1690 fail:
1691  av_frame_unref(pic);
1692  return AVERROR(ENOMEM);
1693 }
1694 
1696 {
1697  int ret;
1698 
1699  if (avctx->hw_frames_ctx) {
1700  ret = av_hwframe_get_buffer(avctx->hw_frames_ctx, frame, 0);
1701  frame->width = avctx->coded_width;
1702  frame->height = avctx->coded_height;
1703  return ret;
1704  }
1705 
1706  if ((ret = update_frame_pool(avctx, frame)) < 0)
1707  return ret;
1708 
1709  switch (avctx->codec_type) {
1710  case AVMEDIA_TYPE_VIDEO:
1711  return video_get_buffer(avctx, frame);
1712  case AVMEDIA_TYPE_AUDIO:
1713  return audio_get_buffer(avctx, frame);
1714  default:
1715  return -1;
1716  }
1717 }
1718 
1720 {
1722  const uint8_t *side_metadata;
1723 
1724  AVDictionary **frame_md = &frame->metadata;
1725 
1726  side_metadata = av_packet_get_side_data(avpkt,
1728  return av_packet_unpack_dictionary(side_metadata, size, frame_md);
1729 }
1730 
1732 {
1733  AVPacket *pkt = avctx->internal->last_pkt_props;
1734  static const struct {
1735  enum AVPacketSideDataType packet;
1737  } sd[] = {
1748  };
1749 
1751  frame->pts = pkt->pts;
1752 #if FF_API_PKT_PTS
1754  frame->pkt_pts = pkt->pts;
1756 #endif
1757  frame->pkt_pos = pkt->pos;
1759  frame->pkt_size = pkt->size;
1760 
1761  for (int i = 0; i < FF_ARRAY_ELEMS(sd); i++) {
1763  uint8_t *packet_sd = av_packet_get_side_data(pkt, sd[i].packet, &size);
1764  if (packet_sd) {
1766  sd[i].frame,
1767  size);
1768  if (!frame_sd)
1769  return AVERROR(ENOMEM);
1770 
1771  memcpy(frame_sd->data, packet_sd, size);
1772  }
1773  }
1775 
1776  if (pkt->flags & AV_PKT_FLAG_DISCARD) {
1778  } else {
1780  }
1781  }
1783 
1787  frame->color_trc = avctx->color_trc;
1789  frame->colorspace = avctx->colorspace;
1791  frame->color_range = avctx->color_range;
1794 
1795  switch (avctx->codec->type) {
1796  case AVMEDIA_TYPE_VIDEO:
1797  frame->format = avctx->pix_fmt;
1800 
1801  if (frame->width && frame->height &&
1803  frame->sample_aspect_ratio) < 0) {
1804  av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
1807  frame->sample_aspect_ratio = (AVRational){ 0, 1 };
1808  }
1809 
1810  break;
1811  case AVMEDIA_TYPE_AUDIO:
1812  if (!frame->sample_rate)
1813  frame->sample_rate = avctx->sample_rate;
1814  if (frame->format < 0)
1815  frame->format = avctx->sample_fmt;
1816  if (!frame->channel_layout) {
1817  if (avctx->channel_layout) {
1819  avctx->channels) {
1820  av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
1821  "configuration.\n");
1822  return AVERROR(EINVAL);
1823  }
1824 
1826  } else {
1827  if (avctx->channels > FF_SANE_NB_CHANNELS) {
1828  av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
1829  avctx->channels);
1830  return AVERROR(ENOSYS);
1831  }
1832  }
1833  }
1834  frame->channels = avctx->channels;
1835  break;
1836  }
1837  return 0;
1838 }
1839 
1841 {
1842  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1843  int i;
1844  int num_planes = av_pix_fmt_count_planes(frame->format);
1846  int flags = desc ? desc->flags : 0;
1847  if (num_planes == 1 && (flags & AV_PIX_FMT_FLAG_PAL))
1848  num_planes = 2;
1849  if ((flags & FF_PSEUDOPAL) && frame->data[1])
1850  num_planes = 2;
1851  for (i = 0; i < num_planes; i++) {
1852  av_assert0(frame->data[i]);
1853  }
1854  // For formats without data like hwaccel allow unused pointers to be non-NULL.
1855  for (i = num_planes; num_planes > 0 && i < FF_ARRAY_ELEMS(frame->data); i++) {
1856  if (frame->data[i])
1857  av_log(avctx, AV_LOG_ERROR, "Buffer returned by get_buffer2() did not zero unused plane pointers\n");
1858  frame->data[i] = NULL;
1859  }
1860  }
1861 }
1862 
1863 static void decode_data_free(void *opaque, uint8_t *data)
1864 {
1866 
1867  if (fdd->post_process_opaque_free)
1869 
1870  if (fdd->hwaccel_priv_free)
1871  fdd->hwaccel_priv_free(fdd->hwaccel_priv);
1872 
1873  av_freep(&fdd);
1874 }
1875 
1877 {
1878  AVBufferRef *fdd_buf;
1879  FrameDecodeData *fdd;
1880 
1883 
1884  fdd = av_mallocz(sizeof(*fdd));
1885  if (!fdd)
1886  return AVERROR(ENOMEM);
1887 
1888  fdd_buf = av_buffer_create((uint8_t*)fdd, sizeof(*fdd), decode_data_free,
1890  if (!fdd_buf) {
1891  av_freep(&fdd);
1892  return AVERROR(ENOMEM);
1893  }
1894 
1895  frame->private_ref = fdd_buf;
1896 
1897  return 0;
1898 }
1899 
1901 {
1902  const AVHWAccel *hwaccel = avctx->hwaccel;
1903  int override_dimensions = 1;
1904  int ret;
1905 
1906  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1907  if ((unsigned)avctx->width > INT_MAX - STRIDE_ALIGN ||
1908  (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) {
1909  av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
1910  ret = AVERROR(EINVAL);
1911  goto fail;
1912  }
1913 
1914  if (frame->width <= 0 || frame->height <= 0) {
1915  frame->width = FFMAX(avctx->width, AV_CEIL_RSHIFT(avctx->coded_width, avctx->lowres));
1916  frame->height = FFMAX(avctx->height, AV_CEIL_RSHIFT(avctx->coded_height, avctx->lowres));
1917  override_dimensions = 0;
1918  }
1919 
1920  if (frame->data[0] || frame->data[1] || frame->data[2] || frame->data[3]) {
1921  av_log(avctx, AV_LOG_ERROR, "pic->data[*]!=NULL in get_buffer_internal\n");
1922  ret = AVERROR(EINVAL);
1923  goto fail;
1924  }
1925  } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
1926  if (frame->nb_samples * (int64_t)avctx->channels > avctx->max_samples) {
1927  av_log(avctx, AV_LOG_ERROR, "samples per frame %d, exceeds max_samples %"PRId64"\n", frame->nb_samples, avctx->max_samples);
1928  ret = AVERROR(EINVAL);
1929  goto fail;
1930  }
1931  }
1932  ret = ff_decode_frame_props(avctx, frame);
1933  if (ret < 0)
1934  goto fail;
1935 
1936  if (hwaccel) {
1937  if (hwaccel->alloc_frame) {
1938  ret = hwaccel->alloc_frame(avctx, frame);
1939  goto end;
1940  }
1941  } else
1942  avctx->sw_pix_fmt = avctx->pix_fmt;
1943 
1944  ret = avctx->get_buffer2(avctx, frame, flags);
1945  if (ret < 0)
1946  goto fail;
1947 
1949 
1951  if (ret < 0)
1952  goto fail;
1953 
1954 end:
1955  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions &&
1957  frame->width = avctx->width;
1958  frame->height = avctx->height;
1959  }
1960 
1961 fail:
1962  if (ret < 0) {
1963  av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
1965  }
1966 
1967  return ret;
1968 }
1969 
1971 {
1972  AVFrame *tmp;
1973  int ret;
1974 
1976 
1977  if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
1978  av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
1981  }
1982 
1983  if (!frame->data[0])
1984  return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1985 
1987  return ff_decode_frame_props(avctx, frame);
1988 
1989  tmp = av_frame_alloc();
1990  if (!tmp)
1991  return AVERROR(ENOMEM);
1992 
1994 
1996  if (ret < 0) {
1997  av_frame_free(&tmp);
1998  return ret;
1999  }
2000 
2002  av_frame_free(&tmp);
2003 
2004  return 0;
2005 }
2006 
2008 {
2009  int ret = reget_buffer_internal(avctx, frame, flags);
2010  if (ret < 0)
2011  av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
2012  return ret;
2013 }
2014 
2016 {
2017  int ret = 0;
2018 
2019  /* if the decoder init function was already called previously,
2020  * free the already allocated subtitle_header before overwriting it */
2021  av_freep(&avctx->subtitle_header);
2022 
2023 #if FF_API_THREAD_SAFE_CALLBACKS
2025  if ((avctx->thread_type & FF_THREAD_FRAME) &&
2027  !avctx->thread_safe_callbacks) {
2028  av_log(avctx, AV_LOG_WARNING, "Requested frame threading with a "
2029  "custom get_buffer2() implementation which is not marked as "
2030  "thread safe. This is not supported anymore, make your "
2031  "callback thread-safe.\n");
2032  }
2034 #endif
2035 
2036  if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
2037  av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
2038  avctx->codec->max_lowres);
2039  avctx->lowres = avctx->codec->max_lowres;
2040  }
2041 
2043  avctx->pts_correction_num_faulty_dts = 0;
2044  avctx->pts_correction_last_pts =
2045  avctx->pts_correction_last_dts = INT64_MIN;
2046 
2047  if ( !CONFIG_GRAY && avctx->flags & AV_CODEC_FLAG_GRAY
2049  av_log(avctx, AV_LOG_WARNING,
2050  "gray decoding requested but not enabled at configuration time\n");
2051  if (avctx->flags2 & AV_CODEC_FLAG2_EXPORT_MVS) {
2053  }
2054 
2055  ret = decode_bsfs_init(avctx);
2056  if (ret < 0)
2057  return ret;
2058 
2059  return 0;
2060 }
static double val(void *priv, double ch)
Definition: aeval.c:76
uint8_t
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
simple assert() macros that are a bit more flexible than ISO C assert().
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
Libavcodec external API header.
#define FF_COMPLIANCE_EXPERIMENTAL
Allow nonstandardized experimental things.
Definition: avcodec.h:1610
#define FF_THREAD_FRAME
Decode more than one frame at once.
Definition: avcodec.h:1788
#define AV_EF_EXPLODE
abort decoding on minor error detection
Definition: avcodec.h:1660
#define FF_SUB_TEXT_FMT_ASS_WITH_TIMINGS
Definition: avcodec.h:2232
#define FF_SUB_CHARENC_MODE_IGNORE
neither convert the subtitles, nor check them for valid UTF-8
Definition: avcodec.h:2125
#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:2124
#define FF_DEBUG_BUFFERS
Definition: avcodec.h:1639
int av_packet_unpack_dictionary(const uint8_t *data, int size, AVDictionary **dict)
Definition: avpacket.c:554
uint8_t * av_packet_get_side_data(const AVPacket *pkt, enum AVPacketSideDataType type, buffer_size_t *size)
Definition: avpacket.c:368
#define AV_RL32
Definition: intreadwrite.h:146
void av_bprintf(AVBPrint *buf, const char *fmt,...)
Definition: bprint.c:94
void av_bprint_init(AVBPrint *buf, unsigned size_init, unsigned size_max)
Definition: bprint.c:69
int av_bprint_finalize(AVBPrint *buf, char **ret_str)
Finalize a print buffer.
Definition: bprint.c:235
void av_bprint_clear(AVBPrint *buf)
Reset the string to "" but keep internal allocated data.
Definition: bprint.c:227
#define AV_BPRINT_SIZE_UNLIMITED
static int av_bprint_is_complete(const AVBPrint *buf)
Test if the print buffer is complete (not truncated).
Definition: bprint.h:185
#define flags(name, subs,...)
Definition: cbs_av1.c:572
#define s(width, name)
Definition: cbs_vp9.c:257
#define fail()
Definition: checkasm.h:133
common internal and external API header
#define FFMIN(a, b)
Definition: common.h:105
#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:499
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
#define FFMAX(a, b)
Definition: common.h:103
#define HAVE_THREADS
Definition: config.h:278
#define CONFIG_MEMORY_POISONING
Definition: config.h:600
#define CONFIG_GRAY
Definition: config.h:560
#define NULL
Definition: coverity.c:32
long long int64_t
Definition: coverity.c:34
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: decode.c:1900
static int hwaccel_init(AVCodecContext *avctx, const AVCodecHWConfigInternal *hw_config)
Definition: decode.c:1277
static void hwaccel_uninit(AVCodecContext *avctx)
Definition: decode.c:1314
int ff_decode_preinit(AVCodecContext *avctx)
Perform decoder initialization and validation.
Definition: decode.c:2015
int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
Set various frame properties from the codec context / packet data.
Definition: decode.c:1731
static void insert_ts(AVBPrint *buf, int ts)
Definition: decode.c:962
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:2007
static int add_metadata_from_side_data(const AVPacket *avpkt, AVFrame *frame)
Definition: decode.c:1719
static void frame_pool_free(void *opaque, uint8_t *data)
Definition: decode.c:1463
#define UTF8_MAX_BYTES
Definition: decode.c:880
static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:1492
int ff_attach_decode_data(AVFrame *frame)
Definition: decode.c:1876
static FF_ENABLE_DEPRECATION_WARNINGS void get_subtitle_defaults(AVSubtitle *sub)
Definition: decode.c:874
static int decode_simple_internal(AVCodecContext *avctx, AVFrame *frame, int64_t *discarded_samples)
Definition: decode.c:299
static int decode_simple_receive_frame(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:522
int ff_decode_get_packet(AVCodecContext *avctx, AVPacket *pkt)
Called by decoders to get the next packet for decoding.
Definition: decode.c:222
static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
Definition: decode.c:1648
static int compat_decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, const AVPacket *pkt)
Definition: decode.c:776
int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
Select the (possibly hardware accelerated) pixel format.
Definition: decode.c:1326
static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:1603
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:267
static int decode_bsfs_init(AVCodecContext *avctx)
Definition: decode.c:188
static int apply_param_change(AVCodecContext *avctx, const AVPacket *avpkt)
Definition: decode.c:67
static AVBufferRef * frame_pool_alloc(void)
Definition: decode.c:1474
static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
Definition: decode.c:1970
static int decode_receive_frame_internal(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:538
static int copy_packet_props(AVPacket *dst, const AVPacket *src)
Definition: decode.c:148
static int convert_sub_to_old_ass_form(AVSubtitle *sub, const AVPacket *pkt, AVRational tb)
Definition: decode.c:976
static int apply_cropping(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:625
static FF_DISABLE_DEPRECATION_WARNINGS int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
Definition: decode.c:730
#define IS_EMPTY(pkt)
Definition: decode.c:146
static void validate_avframe_allocation(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:1840
int ff_decode_get_hw_frames_ctx(AVCodecContext *avctx, enum AVHWDeviceType dev_type)
Make sure avctx.hw_frames_ctx is set.
Definition: decode.c:1177
static int utf8_check(const uint8_t *str)
Definition: decode.c:942
static int recode_subtitle(AVCodecContext *avctx, AVPacket **outpkt, AVPacket *inpkt, AVPacket *buf_pkt)
Definition: decode.c:881
static int extract_packet_props(AVCodecInternal *avci, const AVPacket *pkt)
Definition: decode.c:160
static void decode_data_free(void *opaque, uint8_t *data)
Definition: decode.c:1863
static AVFrame * frame
static float sub(float src0, float src1)
reference-counted frame API
#define AV_NUM_DATA_POINTERS
Definition: frame.h:319
int av_get_channel_layout_nb_channels(uint64_t channel_layout)
Return the number of channels in the channel layout.
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
int avcodec_parameters_from_context(AVCodecParameters *par, const AVCodecContext *codec)
Fill the parameters struct based on the values from the supplied codec context.
Definition: codec_par.c:90
int av_bsf_init(AVBSFContext *ctx)
Prepare the filter for use, after all the parameters and options have been set.
Definition: bsf.c:148
#define AV_CODEC_FLAG2_EXPORT_MVS
Export motion vectors through frame side data.
Definition: avcodec.h:380
#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:77
const AVCodecHWConfig * avcodec_get_hw_config(const AVCodec *codec, int index)
Retrieve supported hardware configurations for a codec.
Definition: utils.c:913
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:52
#define AV_CODEC_CAP_SUBFRAMES
Codec can output multiple frames per AVPacket Normally demuxers return one frame at a time,...
Definition: codec.h:95
#define AV_GET_BUFFER_FLAG_REF
The decoder will keep a reference to the frame and may reuse it later.
Definition: avcodec.h:514
int av_codec_is_decoder(const AVCodec *codec)
Definition: utils.c:79
#define AV_CODEC_FLAG_TRUNCATED
Input bitstream might be truncated at a random location instead of only at frame boundaries.
Definition: avcodec.h:317
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
Definition: avcodec.h:308
int av_bsf_receive_packet(AVBSFContext *ctx, AVPacket *pkt)
Retrieve a filtered packet.
Definition: bsf.c:227
void avsubtitle_free(AVSubtitle *sub)
Free all allocated data in the given subtitle struct.
Definition: avcodec.c:551
#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
int av_bsf_send_packet(AVBSFContext *ctx, AVPacket *pkt)
Submit a packet for filtering.
Definition: bsf.c:201
#define AV_CODEC_FLAG_DROPCHANGED
Don't output frames whose parameters differ from first decoded frame in stream.
Definition: avcodec.h:292
#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_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:523
#define AV_CODEC_EXPORT_DATA_MVS
Export motion vectors through frame side data.
Definition: avcodec.h:403
#define AV_CODEC_CAP_PARAM_CHANGE
Codec supports changed parameters at any point.
Definition: codec.h:116
#define AV_CODEC_PROP_TEXT_SUB
Subtitle codec is text based.
Definition: codec_desc.h:102
#define AV_CODEC_FLAG2_SKIP_MANUAL
Do not skip samples and export skip information as frame side data.
Definition: avcodec.h:384
@ AV_CODEC_HW_CONFIG_METHOD_AD_HOC
The codec supports this format by some ad-hoc method.
Definition: codec.h:440
@ AV_CODEC_HW_CONFIG_METHOD_HW_FRAMES_CTX
The codec supports this format via the hw_frames_ctx interface.
Definition: codec.h:424
@ AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX
The codec supports this format via the hw_device_ctx interface.
Definition: codec.h:411
@ AV_CODEC_HW_CONFIG_METHOD_INTERNAL
The codec supports this format by some internal method.
Definition: codec.h:431
@ SUBTITLE_ASS
Formatted text, the ass field must be set by the decoder and is authoritative.
Definition: avcodec.h:2686
int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
The default callback for AVCodecContext.get_buffer2().
Definition: decode.c:1695
int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
Return decoded output data from a decoder.
Definition: decode.c:652
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:134
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:857
int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub, int *got_sub_ptr, AVPacket *avpkt)
Decode a subtitle message.
Definition: decode.c:1034
int attribute_align_arg avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt)
Supply raw packet data as input to a decoder.
Definition: decode.c:589
int avcodec_get_hw_frames_parameters(AVCodecContext *avctx, AVBufferRef *device_ref, enum AVPixelFormat hw_pix_fmt, AVBufferRef **out_frames_ref)
Create and return a AVHWFramesContext with values adequate for hardware decoding.
Definition: decode.c:1228
#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
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:864
#define AV_HWACCEL_CODEC_CAP_EXPERIMENTAL
HWAccel is experimental and is thus avoided in favor of non experimental codecs.
Definition: avcodec.h:2608
enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *avctx, const enum AVPixelFormat *fmt)
Definition: decode.c:1114
int avcodec_is_open(AVCodecContext *s)
Definition: avcodec.c:848
void avcodec_flush_buffers(AVCodecContext *avctx)
Reset the internal codec state / flush internal buffers.
Definition: avcodec.c:491
#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:417
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:634
AVPacketSideDataType
Definition: packet.h:40
int av_packet_ref(AVPacket *dst, const AVPacket *src)
Setup a new reference to the data described by a given packet.
Definition: avpacket.c:641
int av_packet_copy_props(AVPacket *dst, const AVPacket *src)
Copy only "properties" fields from src to dst.
Definition: avpacket.c:600
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
Definition: avpacket.c:99
@ AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT
Definition: packet.h:432
@ AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT
Definition: packet.h:433
@ AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE
Definition: packet.h:434
@ AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS
Definition: packet.h:435
@ AV_PKT_DATA_STRINGS_METADATA
A list of zero terminated key/value strings.
Definition: packet.h:172
@ AV_PKT_DATA_S12M_TIMECODE
Timecode which conforms to SMPTE ST 12-1:2014.
Definition: packet.h:291
@ AV_PKT_DATA_SKIP_SAMPLES
Recommmends skipping the specified number of samples.
Definition: packet.h:156
@ AV_PKT_DATA_ICC_PROFILE
ICC profile data consisting of an opaque octet buffer following the format described by ISO 15076-1.
Definition: packet.h:274
@ AV_PKT_DATA_MASTERING_DISPLAY_METADATA
Mastering display metadata (based on SMPTE-2086:2014).
Definition: packet.h:222
@ AV_PKT_DATA_AUDIO_SERVICE_TYPE
This side data should be associated with an audio stream and corresponds to enum AVAudioServiceType.
Definition: packet.h:120
@ AV_PKT_DATA_A53_CC
ATSC A53 Part 4 Closed Captions.
Definition: packet.h:242
@ AV_PKT_DATA_SPHERICAL
This side data should be associated with a video stream and corresponds to the AVSphericalMapping str...
Definition: packet.h:228
@ AV_PKT_DATA_DISPLAYMATRIX
This side data contains a 3x3 transformation matrix describing an affine transformation that needs to...
Definition: packet.h:108
@ AV_PKT_DATA_PARAM_CHANGE
An AV_PKT_DATA_PARAM_CHANGE side data packet is laid out as follows:
Definition: packet.h:72
@ AV_PKT_DATA_STEREO3D
This side data should be associated with a video stream and contains Stereoscopic 3D information in f...
Definition: packet.h:114
@ AV_PKT_DATA_CONTENT_LIGHT_LEVEL
Content light level (based on CTA-861.3).
Definition: packet.h:235
@ AV_PKT_DATA_REPLAYGAIN
This side data should be associated with an audio stream and contains ReplayGain information in form ...
Definition: packet.h:99
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
AVBufferRef * av_buffer_allocz(buffer_size_t size)
Same as av_buffer_alloc(), except the returned buffer will be initialized to zero.
Definition: buffer.c:83
AVBufferRef * av_buffer_create(uint8_t *data, buffer_size_t size, void(*free)(void *opaque, uint8_t *data), void *opaque, int flags)
Create an AVBuffer from an existing array.
Definition: buffer.c:29
#define AV_BUFFER_FLAG_READONLY
Always treat the buffer as read-only, even when it has only one reference.
Definition: buffer.h:128
AVBufferPool * av_buffer_pool_init(buffer_size_t size, AVBufferRef *(*alloc)(buffer_size_t size))
Allocate and initialize a buffer pool.
Definition: buffer.c:269
AVBufferRef * av_buffer_pool_get(AVBufferPool *pool)
Allocate a new AVBuffer, reusing an old buffer from the pool when available.
Definition: buffer.c:379
void av_buffer_pool_uninit(AVBufferPool **ppool)
Mark the pool as being available for freeing.
Definition: buffer.c:314
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
#define AVERROR_BUG
Internal bug, also see AVERROR_BUG2.
Definition: error.h:50
#define AVERROR_INPUT_CHANGED
Input changed between calls. Reconfiguration is required. (can be OR-ed with AVERROR_OUTPUT_CHANGED)
Definition: error.h:73
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
#define AVERROR_EOF
End of file.
Definition: error.h:55
#define av_err2str(errnum)
Convenience macro, the return value should be used only directly in function arguments but never stan...
Definition: error.h:119
#define AVERROR(e)
Definition: error.h:43
#define AV_FRAME_FLAG_DISCARD
A flag to mark the frames which need to be decoded, but shouldn't be output.
Definition: frame.h:547
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
Definition: frame.c:553
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
Definition: frame.c:594
void av_frame_move_ref(AVFrame *dst, AVFrame *src)
Move everything contained in src to dst and reset src.
Definition: frame.c:582
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:203
AVFrameSideData * av_frame_new_side_data(AVFrame *frame, enum AVFrameSideDataType type, buffer_size_t size)
Add a new side data to a frame.
Definition: frame.c:726
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:658
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:190
AVFrameSideDataType
Definition: frame.h:48
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:891
int av_frame_copy(AVFrame *dst, const AVFrame *src)
Copy the frame data from src to dst.
Definition: frame.c:799
@ AV_FRAME_CROP_UNALIGNED
Apply the maximum possible cropping, even if it requires setting the AVFrame.data[] entries to unalig...
Definition: frame.h:967
@ AV_FRAME_DATA_SPHERICAL
The data represents the AVSphericalMapping structure defined in libavutil/spherical....
Definition: frame.h:130
@ AV_FRAME_DATA_CONTENT_LIGHT_LEVEL
Content light level (based on CTA-861.3).
Definition: frame.h:136
@ AV_FRAME_DATA_DISPLAYMATRIX
This side data contains a 3x3 transformation matrix describing an affine transformation that needs to...
Definition: frame.h:84
@ AV_FRAME_DATA_A53_CC
ATSC A53 Part 4 Closed Captions.
Definition: frame.h:58
@ AV_FRAME_DATA_AUDIO_SERVICE_TYPE
This side data must be associated with an audio frame and corresponds to enum AVAudioServiceType defi...
Definition: frame.h:113
@ AV_FRAME_DATA_REPLAYGAIN
ReplayGain information in the form of the AVReplayGain struct.
Definition: frame.h:76
@ AV_FRAME_DATA_SKIP_SAMPLES
Recommmends skipping the specified number of samples.
Definition: frame.h:108
@ AV_FRAME_DATA_MASTERING_DISPLAY_METADATA
Mastering display metadata associated with a video frame.
Definition: frame.h:119
@ AV_FRAME_DATA_ICC_PROFILE
The data contains an ICC profile as an opaque octet buffer following the format described by ISO 1507...
Definition: frame.h:143
@ AV_FRAME_DATA_S12M_TIMECODE
Timecode which conforms to SMPTE ST 12-1.
Definition: frame.h:168
@ AV_FRAME_DATA_STEREO3D
Stereoscopic 3d metadata.
Definition: frame.h:63
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:215
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:200
#define AV_LOG_INFO
Standard information.
Definition: log.h:205
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
AVRational av_mul_q(AVRational b, AVRational c)
Multiply two rationals.
Definition: rational.c:80
static AVRational av_make_q(int num, int den)
Create an AVRational.
Definition: rational.h:71
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
Definition: rational.h:159
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
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
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:253
void * av_mallocz_array(size_t nmemb, size_t size)
Allocate a memory block for an array with av_mallocz().
Definition: mem.c:190
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
@ AVMEDIA_TYPE_SUBTITLE
Definition: avutil.h:204
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
int av_image_fill_plane_sizes(size_t sizes[4], enum AVPixelFormat pix_fmt, int height, const ptrdiff_t linesizes[4])
Fill plane sizes for an image with pixel format pix_fmt and height height.
Definition: imgutils.c:111
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:288
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
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:322
int av_sample_fmt_is_planar(enum AVSampleFormat sample_fmt)
Check if the sample format is planar.
Definition: samplefmt.c:112
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
@ AV_SAMPLE_FMT_NONE
Definition: samplefmt.h:59
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
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
Definition: avutil.h:260
for(j=16;j >0;--j)
static enum AVPixelFormat hw_pix_fmt
Definition: hw_decode.c:46
int av_hwframe_ctx_init(AVBufferRef *ref)
Finalize the context before use.
Definition: hwcontext.c:333
AVBufferRef * av_hwframe_ctx_alloc(AVBufferRef *device_ref_in)
Allocate an AVHWFramesContext tied to a given device context.
Definition: hwcontext.c:247
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
const char * av_hwdevice_get_type_name(enum AVHWDeviceType type)
Get the string name of an AVHWDeviceType.
Definition: hwcontext.c:92
AVHWDeviceType
Definition: hwcontext.h:27
int avpriv_set_systematic_pal2(uint32_t pal[256], enum AVPixelFormat pix_fmt)
Definition: imgutils.c:176
misc image utilities
int i
Definition: input.c:407
#define AV_WL8(p, d)
Definition: intreadwrite.h:399
#define AV_RL8(x)
Definition: intreadwrite.h:398
#define AV_WL32(p, v)
Definition: intreadwrite.h:426
#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:56
#define FF_REGET_BUFFER_FLAG_READONLY
the returned buffer does not need to be writable
Definition: internal.h:312
#define FF_CODEC_CAP_EXPORTS_CROPPING
The decoder sets the cropping fields in the output frames manually.
Definition: internal.h:67
#define FF_SANE_NB_CHANNELS
Definition: internal.h:107
#define FF_CODEC_CAP_SETS_FRAME_PROPS
Codec handles output frame properties internally instead of letting the internal logic derive them fr...
Definition: internal.h:85
#define STRIDE_ALIGN
Definition: internal.h:118
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:84
int av_fifo_size(const AVFifoBuffer *f)
Return the amount of data in bytes in the AVFifoBuffer, that is the amount of data you can read from ...
Definition: fifo.c:77
int av_fifo_generic_read(AVFifoBuffer *f, void *dest, int buf_size, void(*func)(void *, void *, int))
Feed data from an AVFifoBuffer to a user-supplied callback.
Definition: fifo.c:213
int av_fifo_space(const AVFifoBuffer *f)
Return the amount of space in bytes in the AVFifoBuffer, that is the amount of data you can write int...
Definition: fifo.c:82
int av_fifo_generic_write(AVFifoBuffer *f, void *src, int size, int(*func)(void *, void *, int))
Feed data from a user-supplied callback to an AVFifoBuffer.
Definition: fifo.c:122
int av_fifo_grow(AVFifoBuffer *f, unsigned int size)
Enlarge an AVFifoBuffer.
Definition: fifo.c:107
common internal API header
#define SIZE_SPECIFIER
Definition: internal.h:193
int buffer_size_t
Definition: internal.h:306
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:83
#define FF_PSEUDOPAL
Definition: internal.h:299
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:84
#define attribute_align_arg
Definition: internal.h:61
#define emms_c()
Definition: internal.h:54
const char * desc
Definition: libsvtav1.c:79
uint8_t w
Definition: llviddspenc.c:39
static const struct @322 planes[]
#define FFALIGN(x, a)
Definition: macros.h:48
const char data[16]
Definition: mxf.c:142
AVOptions.
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2613
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:2489
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2573
#define AV_PIX_FMT_FLAG_HWACCEL
Pixel format is an HW accelerated format.
Definition: pixdesc.h:140
#define AV_PIX_FMT_FLAG_PAL
Pixel format has a palette in data[1], values are indexes in this palette.
Definition: pixdesc.h:132
@ AVCHROMA_LOC_UNSPECIFIED
Definition: pixfmt.h:606
@ AVCOL_RANGE_UNSPECIFIED
Definition: pixfmt.h:552
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
@ AVCOL_PRI_UNSPECIFIED
Definition: pixfmt.h:461
@ AVCOL_TRC_UNSPECIFIED
Definition: pixfmt.h:486
@ AVCOL_SPC_UNSPECIFIED
Definition: pixfmt.h:515
int ff_thread_decode_frame(AVCodecContext *avctx, AVFrame *picture, int *got_picture_ptr, AVPacket *avpkt)
Submit a new frame to a decoding thread.
#define tb
Definition: regdef.h:68
#define FF_ARRAY_ELEMS(a)
AVCodecParameters * par_in
Parameters of the input stream.
Definition: bsf.h:77
AVRational time_base_in
The timebase used for the timestamps of the input packets.
Definition: bsf.h:89
The buffer pool.
A reference to a data buffer.
Definition: buffer.h:84
int size
Size of data in bytes.
Definition: buffer.h:97
uint8_t * data
The data buffer.
Definition: buffer.h:92
main external API structure.
Definition: avcodec.h:536
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:746
int64_t pts_correction_last_dts
PTS of the last frame.
Definition: avcodec.h:2106
const AVCodecDescriptor * codec_descriptor
AVCodecDescriptor.
Definition: avcodec.h:2096
int width
picture width / height.
Definition: avcodec.h:709
int64_t pts_correction_num_faulty_dts
Number of incorrect PTS values so far.
Definition: avcodec.h:2104
int64_t pts_correction_last_pts
Number of incorrect DTS values so far.
Definition: avcodec.h:2105
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:1372
int flags2
AV_CODEC_FLAG2_*.
Definition: avcodec.h:623
enum AVSampleFormat sample_fmt
audio sample format
Definition: avcodec.h:1204
int debug
debug
Definition: avcodec.h:1627
enum AVPixelFormat sw_pix_fmt
Nominal unaccelerated pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:2082
int64_t max_pixels
The number of pixels per image to maximally accept.
Definition: avcodec.h:2252
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition: avcodec.h:1171
char * sub_charenc
DTS of the last frame.
Definition: avcodec.h:2113
int strict_std_compliance
strictly follow the standard (MPEG-4, ...).
Definition: avcodec.h:1605
AVRational pkt_timebase
Timebase in which pkt_dts/pts and AVPacket.dts/pts are.
Definition: avcodec.h:2089
enum AVPixelFormat(* get_format)(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
callback to negotiate the pixelFormat
Definition: avcodec.h:788
enum AVColorPrimaries color_primaries
Chromaticity coordinates of the source primaries.
Definition: avcodec.h:1150
AVBufferRef * hw_frames_ctx
A reference to the AVHWFramesContext describing the input (for encoding) or output (decoding) frames.
Definition: avcodec.h:2222
enum AVMediaType codec_type
Definition: avcodec.h:544
int apply_cropping
Video decoding only.
Definition: avcodec.h:2310
AVRational framerate
Definition: avcodec.h:2075
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:915
const struct AVHWAccel * hwaccel
Hardware accelerator in use.
Definition: avcodec.h:1684
int active_thread_type
Which multithreading methods are in use by the codec.
Definition: avcodec.h:1796
int sub_charenc_mode
Subtitles character encoding mode.
Definition: avcodec.h:2121
int64_t reordered_opaque
opaque 64-bit number (generally a PTS) that will be reordered and output in AVFrame....
Definition: avcodec.h:1677
int has_b_frames
Size of the frame reordering buffer in the decoder.
Definition: avcodec.h:826
int64_t pts_correction_num_faulty_pts
Current statistics for PTS correction.
Definition: avcodec.h:2103
const struct AVCodec * codec
Definition: avcodec.h:545
int thread_type
Which multithreading methods to use.
Definition: avcodec.h:1787
int export_side_data
Bit set of AV_CODEC_EXPORT_DATA_* flags, which affects the kind of metadata exported in frame,...
Definition: avcodec.h:2350
enum AVColorSpace colorspace
YUV colorspace type.
Definition: avcodec.h:1164
int sub_text_format
Control the form of AVSubtitle.rects[N]->ass.
Definition: avcodec.h:2229
int sample_rate
samples per second
Definition: avcodec.h:1196
int frame_number
Frame counter, set by libavcodec.
Definition: avcodec.h:1227
attribute_deprecated int thread_safe_callbacks
Set by the client if its custom get_buffer() callback can be called synchronously from another thread...
Definition: avcodec.h:1816
int thread_count
thread count is used to decide how many independent tasks should be passed to execute()
Definition: avcodec.h:1777
int coded_height
Definition: avcodec.h:724
enum AVColorTransferCharacteristic color_trc
Color Transfer Characteristic.
Definition: avcodec.h:1157
uint8_t * subtitle_header
Header containing style information for text subtitles.
Definition: avcodec.h:2020
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented.
Definition: avcodec.h:659
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:616
int channels
number of audio channels
Definition: avcodec.h:1197
enum AVChromaLocation chroma_sample_location
This defines the location of chroma samples.
Definition: avcodec.h:1178
AVBufferRef * hw_device_ctx
A reference to the AVHWDeviceContext describing the device which will be used by a hardware encoder/d...
Definition: avcodec.h:2274
int extra_hw_frames
Definition: avcodec.h:2324
int64_t max_samples
The number of samples per frame to maximally accept.
Definition: avcodec.h:2340
int coded_width
Bitstream width / height, may be different from width/height e.g.
Definition: avcodec.h:724
uint64_t channel_layout
Audio channel layout.
Definition: avcodec.h:1247
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:1355
struct AVCodecInternal * internal
Private context used for internal data.
Definition: avcodec.h:571
int lowres
low resolution decoding, 1-> 1/2 size, 2->1/4 size
Definition: avcodec.h:1758
int err_recognition
Error recognition; may misdetect some more or less valid parts as errors.
Definition: avcodec.h:1649
int props
Codec properties, a combination of AV_CODEC_PROP_* flags.
Definition: codec_desc.h:54
enum AVMediaType type
Definition: codec_desc.h:40
const AVHWAccel * hwaccel
If this configuration uses a hwaccel, a pointer to it.
Definition: hwconfig.h:39
AVCodecHWConfig public
This is the structure which will be returned to the user by avcodec_get_hw_config().
Definition: hwconfig.h:34
enum AVHWDeviceType device_type
The device type associated with the configuration.
Definition: codec.h:464
int methods
Bit set of AV_CODEC_HW_CONFIG_METHOD_* flags, describing the possible setup methods which can be used...
Definition: codec.h:457
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:452
int initial_format
Definition: internal.h:215
int nb_draining_errors
Definition: internal.h:211
size_t compat_decode_consumed
Definition: internal.h:198
AVFrame * to_free
Definition: internal.h:145
AVPacket * last_pkt_props
Properties (timestamps+side data) extracted from the last packet passed for decoding.
Definition: internal.h:159
AVFifoBuffer * pkt_props
Definition: internal.h:160
AVBSFContext * bsf
Definition: internal.h:153
uint64_t initial_channel_layout
Definition: internal.h:219
int changed_frames_dropped
Definition: internal.h:214
void * hwaccel_priv_data
hwaccel-specific private data
Definition: internal.h:180
size_t compat_decode_partial_size
Definition: internal.h:201
int initial_channels
Definition: internal.h:218
AVFrame * buffer_frame
Definition: internal.h:191
AVPacket * buffer_pkt
buffers for using new encode/decode API through legacy API
Definition: internal.h:190
AVBufferRef * pool
Definition: internal.h:148
DecodeSimpleContext ds
Definition: internal.h:152
int skip_samples_multiplier
Definition: internal.h:208
int draining
checks API usage: after codec draining, flush is required to resume operation
Definition: internal.h:185
AVFrame * compat_decode_frame
Definition: internal.h:202
int initial_sample_rate
Definition: internal.h:217
int initial_height
Definition: internal.h:216
int skip_samples
Number of audio samples to skip at the start of the next decoded frame.
Definition: internal.h:175
int compat_decode_warned
Definition: internal.h:195
int showed_multi_packet_warning
Definition: internal.h:206
int caps_internal
Internal codec capabilities.
Definition: codec.h:328
int(* receive_frame)(struct AVCodecContext *avctx, struct AVFrame *frame)
Decode API with decoupled packet/frame dataflow.
Definition: codec.h:318
const char * bsfs
Decoding only, a comma-separated list of bitstream filters to apply to packets before decoding.
Definition: codec.h:334
const struct AVCodecHWConfigInternal *const * hw_configs
Array of pointers to hardware configurations supported by the codec, or NULL if no hardware supported...
Definition: codec.h:343
int(* decode)(struct AVCodecContext *avctx, void *outdata, int *got_frame_ptr, struct AVPacket *avpkt)
Decode picture or subtitle data.
Definition: codec.h:303
enum AVMediaType type
Definition: codec.h:210
int capabilities
Codec capabilities.
Definition: codec.h:216
uint8_t max_lowres
maximum value for lowres supported by the decoder
Definition: codec.h:222
Structure to hold side data for an AVFrame.
Definition: frame.h:220
uint8_t * data
Definition: frame.h:222
This structure describes decoded (raw) audio or video data.
Definition: frame.h:318
int nb_samples
number of audio samples (per channel) described by this frame
Definition: frame.h:384
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:411
int64_t best_effort_timestamp
frame timestamp estimated using various heuristics, in stream time base
Definition: frame.h:582
size_t crop_right
Definition: frame.h:681
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:332
enum AVChromaLocation chroma_location
Definition: frame.h:575
int width
Definition: frame.h:376
AVBufferRef ** extended_buf
For planar audio which requires more than AV_NUM_DATA_POINTERS AVBufferRef pointers,...
Definition: frame.h:523
attribute_deprecated int64_t pkt_pts
PTS copied from the AVPacket that was decoded to produce this frame.
Definition: frame.h:419
int64_t pkt_duration
duration of the corresponding packet, expressed in AVStream->time_base units, 0 if unknown.
Definition: frame.h:597
int64_t pkt_pos
reordered pos from the last AVPacket that has been input into the decoder
Definition: frame.h:589
int pkt_size
size of the corresponding packet containing the compressed frame.
Definition: frame.h:633
int height
Definition: frame.h:376
int flags
Frame flags, a combination of AV_FRAME_FLAGS.
Definition: frame.h:555
AVBufferRef * buf[AV_NUM_DATA_POINTERS]
AVBuffer references backing the data for this frame.
Definition: frame.h:509
int channels
number of audio channels, only used for audio.
Definition: frame.h:624
enum AVColorPrimaries color_primaries
Definition: frame.h:564
AVDictionary * metadata
metadata.
Definition: frame.h:604
uint64_t channel_layout
Channel layout of the audio data.
Definition: frame.h:495
AVRational sample_aspect_ratio
Sample aspect ratio for the video frame, 0/1 if unknown/unspecified.
Definition: frame.h:406
AVBufferRef * private_ref
AVBufferRef for internal use by a single libav* library.
Definition: frame.h:697
size_t crop_top
Definition: frame.h:678
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition: frame.h:562
enum AVColorSpace colorspace
YUV colorspace type.
Definition: frame.h:573
int nb_extended_buf
Number of elements in extended_buf.
Definition: frame.h:527
int64_t pkt_dts
DTS copied from the AVPacket that triggered returning this frame.
Definition: frame.h:427
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:349
size_t crop_left
Definition: frame.h:680
enum AVColorTransferCharacteristic color_trc
Definition: frame.h:566
int64_t reordered_opaque
reordered opaque 64 bits (generally an integer or a double precision float PTS but can be anything).
Definition: frame.h:485
int sample_rate
Sample rate of the audio data.
Definition: frame.h:490
size_t crop_bottom
Definition: frame.h:679
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames,...
Definition: frame.h:391
uint8_t ** extended_data
pointers to the data planes/channels.
Definition: frame.h:365
int priv_data_size
Size of the private data to allocate in AVCodecInternal.hwaccel_priv_data.
Definition: avcodec.h:2586
int(* alloc_frame)(AVCodecContext *avctx, AVFrame *frame)
Allocate a custom buffer.
Definition: avcodec.h:2488
int(* uninit)(AVCodecContext *avctx)
Uninitialize the hwaccel private data.
Definition: avcodec.h:2580
int(* init)(AVCodecContext *avctx)
Initialize the hwaccel private data.
Definition: avcodec.h:2572
const char * name
Name of the hardware accelerated codec.
Definition: avcodec.h:2448
int capabilities
Hardware accelerated codec capabilities.
Definition: avcodec.h:2475
int(* frame_params)(AVCodecContext *avctx, AVBufferRef *hw_frames_ctx)
Fill the given hw_frames context with current codec parameters.
Definition: avcodec.h:2601
enum AVPixelFormat pix_fmt
Supported pixel format.
Definition: avcodec.h:2469
This struct aggregates all the (hardware/vendor-specific) "high-level" state, i.e.
Definition: hwcontext.h:61
enum AVHWDeviceType type
This field identifies the underlying API used for hardware access.
Definition: hwcontext.h:79
This struct describes a set or pool of "hardware" frames (i.e.
Definition: hwcontext.h:124
enum AVPixelFormat format
The pixel format identifying the underlying HW surface type.
Definition: hwcontext.h:209
int initial_pool_size
Initial size of the frame pool.
Definition: hwcontext.h:199
This structure stores compressed data.
Definition: packet.h:346
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:375
int size
Definition: packet.h:370
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: packet.h:387
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: packet.h:362
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed.
Definition: packet.h:368
uint8_t * data
Definition: packet.h:369
int64_t pos
byte position in stream, -1 if unknown
Definition: packet.h:389
int side_data_elems
Definition: packet.h:381
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
Rational number (pair of numerator and denominator).
Definition: rational.h:58
int num
Numerator.
Definition: rational.h:59
int den
Denominator.
Definition: rational.h:60
AVPacket * in_pkt
Definition: internal.h:122
This struct stores per-frame lavc-internal data and is attached to it via private_ref.
Definition: decode.h:34
void(* hwaccel_priv_free)(void *priv)
Definition: decode.h:53
void(* post_process_opaque_free)(void *opaque)
Definition: decode.h:47
void * post_process_opaque
Definition: decode.h:46
void * hwaccel_priv
Per-frame private data for hwaccels.
Definition: decode.h:52
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 channels
Definition: decode.c:63
int planes
Definition: decode.c:62
int stride_align[AV_NUM_DATA_POINTERS]
Definition: decode.c:60
int width
Definition: decode.c:59
int height
Definition: decode.c:59
int linesize[4]
Definition: decode.c:61
AVBufferPool * pools[4]
Pools for each data plane.
Definition: decode.c:53
int samples
Definition: decode.c:64
int format
Definition: decode.c:58
Definition: f_ebur128.c:91
#define av_malloc_array(a, b)
#define av_freep(p)
#define av_malloc(s)
#define av_log(a,...)
static uint8_t tmp[11]
Definition: aes_ctr.c:27
#define src
Definition: vp8dsp.c:255
AVPacket * pkt
Definition: movenc.c:59
AVFormatContext * ctx
Definition: movenc.c:48
static void finish(void)
Definition: movenc.c:342
static int64_t pts
int size
if(ret< 0)
Definition: vf_mcdeint.c:282
float min