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decode.c
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1 /*
2  * generic decoding-related code
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include <stdint.h>
22 #include <string.h>
23 
24 #include "config.h"
25 
26 #if CONFIG_ICONV
27 # include <iconv.h>
28 #endif
29 
30 #include "libavutil/avassert.h"
31 #include "libavutil/avstring.h"
32 #include "libavutil/bprint.h"
33 #include "libavutil/common.h"
34 #include "libavutil/frame.h"
35 #include "libavutil/hwcontext.h"
36 #include "libavutil/imgutils.h"
37 #include "libavutil/internal.h"
38 #include "libavutil/intmath.h"
39 #include "libavutil/opt.h"
40 
41 #include "avcodec.h"
42 #include "bytestream.h"
43 #include "decode.h"
44 #include "hwaccel.h"
45 #include "internal.h"
46 #include "thread.h"
47 
48 static int apply_param_change(AVCodecContext *avctx, const AVPacket *avpkt)
49 {
50  int size = 0, ret;
51  const uint8_t *data;
52  uint32_t flags;
53  int64_t val;
54 
56  if (!data)
57  return 0;
58 
59  if (!(avctx->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE)) {
60  av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
61  "changes, but PARAM_CHANGE side data was sent to it.\n");
62  ret = AVERROR(EINVAL);
63  goto fail2;
64  }
65 
66  if (size < 4)
67  goto fail;
68 
69  flags = bytestream_get_le32(&data);
70  size -= 4;
71 
73  if (size < 4)
74  goto fail;
75  val = bytestream_get_le32(&data);
76  if (val <= 0 || val > INT_MAX) {
77  av_log(avctx, AV_LOG_ERROR, "Invalid channel count");
78  ret = AVERROR_INVALIDDATA;
79  goto fail2;
80  }
81  avctx->channels = val;
82  size -= 4;
83  }
85  if (size < 8)
86  goto fail;
87  avctx->channel_layout = bytestream_get_le64(&data);
88  size -= 8;
89  }
91  if (size < 4)
92  goto fail;
93  val = bytestream_get_le32(&data);
94  if (val <= 0 || val > INT_MAX) {
95  av_log(avctx, AV_LOG_ERROR, "Invalid sample rate");
96  ret = AVERROR_INVALIDDATA;
97  goto fail2;
98  }
99  avctx->sample_rate = val;
100  size -= 4;
101  }
103  if (size < 8)
104  goto fail;
105  avctx->width = bytestream_get_le32(&data);
106  avctx->height = bytestream_get_le32(&data);
107  size -= 8;
108  ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
109  if (ret < 0)
110  goto fail2;
111  }
112 
113  return 0;
114 fail:
115  av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
116  ret = AVERROR_INVALIDDATA;
117 fail2:
118  if (ret < 0) {
119  av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
120  if (avctx->err_recognition & AV_EF_EXPLODE)
121  return ret;
122  }
123  return 0;
124 }
125 
127 {
128  int ret = 0;
129 
131  if (pkt) {
132  ret = av_packet_copy_props(avci->last_pkt_props, pkt);
133  if (!ret)
134  avci->last_pkt_props->size = pkt->size; // HACK: Needed for ff_decode_frame_props().
135  }
136  return ret;
137 }
138 
140 {
141  int ret;
142 
143  /* move the original frame to our backup */
144  av_frame_unref(avci->to_free);
145  av_frame_move_ref(avci->to_free, frame);
146 
147  /* now copy everything except the AVBufferRefs back
148  * note that we make a COPY of the side data, so calling av_frame_free() on
149  * the caller's frame will work properly */
150  ret = av_frame_copy_props(frame, avci->to_free);
151  if (ret < 0)
152  return ret;
153 
154  memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
155  memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
156  if (avci->to_free->extended_data != avci->to_free->data) {
157  int planes = avci->to_free->channels;
158  int size = planes * sizeof(*frame->extended_data);
159 
160  if (!size) {
161  av_frame_unref(frame);
162  return AVERROR_BUG;
163  }
164 
165  frame->extended_data = av_malloc(size);
166  if (!frame->extended_data) {
167  av_frame_unref(frame);
168  return AVERROR(ENOMEM);
169  }
170  memcpy(frame->extended_data, avci->to_free->extended_data,
171  size);
172  } else
173  frame->extended_data = frame->data;
174 
175  frame->format = avci->to_free->format;
176  frame->width = avci->to_free->width;
177  frame->height = avci->to_free->height;
178  frame->channel_layout = avci->to_free->channel_layout;
179  frame->nb_samples = avci->to_free->nb_samples;
180  frame->channels = avci->to_free->channels;
181 
182  return 0;
183 }
184 
186 {
187  AVCodecInternal *avci = avctx->internal;
188  DecodeFilterContext *s = &avci->filter;
189  const char *bsfs_str;
190  int ret;
191 
192  if (s->nb_bsfs)
193  return 0;
194 
195  bsfs_str = avctx->codec->bsfs ? avctx->codec->bsfs : "null";
196  while (bsfs_str && *bsfs_str) {
197  AVBSFContext **tmp;
198  const AVBitStreamFilter *filter;
199  char *bsf, *bsf_options_str, *bsf_name;
200 
201  bsf = av_get_token(&bsfs_str, ",");
202  if (!bsf) {
203  ret = AVERROR(ENOMEM);
204  goto fail;
205  }
206  bsf_name = av_strtok(bsf, "=", &bsf_options_str);
207  if (!bsf_name) {
208  av_freep(&bsf);
209  ret = AVERROR(ENOMEM);
210  goto fail;
211  }
212 
213  filter = av_bsf_get_by_name(bsf_name);
214  if (!filter) {
215  av_log(avctx, AV_LOG_ERROR, "A non-existing bitstream filter %s "
216  "requested by a decoder. This is a bug, please report it.\n",
217  bsf_name);
218  av_freep(&bsf);
219  ret = AVERROR_BUG;
220  goto fail;
221  }
222 
223  tmp = av_realloc_array(s->bsfs, s->nb_bsfs + 1, sizeof(*s->bsfs));
224  if (!tmp) {
225  av_freep(&bsf);
226  ret = AVERROR(ENOMEM);
227  goto fail;
228  }
229  s->bsfs = tmp;
230  s->nb_bsfs++;
231 
232  ret = av_bsf_alloc(filter, &s->bsfs[s->nb_bsfs - 1]);
233  if (ret < 0) {
234  av_freep(&bsf);
235  goto fail;
236  }
237 
238  if (s->nb_bsfs == 1) {
239  /* We do not currently have an API for passing the input timebase into decoders,
240  * but no filters used here should actually need it.
241  * So we make up some plausible-looking number (the MPEG 90kHz timebase) */
242  s->bsfs[s->nb_bsfs - 1]->time_base_in = (AVRational){ 1, 90000 };
244  avctx);
245  } else {
246  s->bsfs[s->nb_bsfs - 1]->time_base_in = s->bsfs[s->nb_bsfs - 2]->time_base_out;
247  ret = avcodec_parameters_copy(s->bsfs[s->nb_bsfs - 1]->par_in,
248  s->bsfs[s->nb_bsfs - 2]->par_out);
249  }
250  if (ret < 0) {
251  av_freep(&bsf);
252  goto fail;
253  }
254 
255  if (bsf_options_str && filter->priv_class) {
256  const AVOption *opt = av_opt_next(s->bsfs[s->nb_bsfs - 1]->priv_data, NULL);
257  const char * shorthand[2] = {NULL};
258 
259  if (opt)
260  shorthand[0] = opt->name;
261 
262  ret = av_opt_set_from_string(s->bsfs[s->nb_bsfs - 1]->priv_data, bsf_options_str, shorthand, "=", ":");
263  if (ret < 0) {
264  if (ret != AVERROR(ENOMEM)) {
265  av_log(avctx, AV_LOG_ERROR, "Invalid options for bitstream filter %s "
266  "requested by the decoder. This is a bug, please report it.\n",
267  bsf_name);
268  ret = AVERROR_BUG;
269  }
270  av_freep(&bsf);
271  goto fail;
272  }
273  }
274  av_freep(&bsf);
275 
276  ret = av_bsf_init(s->bsfs[s->nb_bsfs - 1]);
277  if (ret < 0)
278  goto fail;
279 
280  if (*bsfs_str)
281  bsfs_str++;
282  }
283 
284  ret = avcodec_parameters_to_context(avctx, s->bsfs[s->nb_bsfs - 1]->par_out);
285  if (ret < 0)
286  return ret;
287 
288  return 0;
289 fail:
290  ff_decode_bsfs_uninit(avctx);
291  return ret;
292 }
293 
294 /* try to get one output packet from the filter chain */
295 static int bsfs_poll(AVCodecContext *avctx, AVPacket *pkt)
296 {
297  DecodeFilterContext *s = &avctx->internal->filter;
298  int idx, ret;
299 
300  /* start with the last filter in the chain */
301  idx = s->nb_bsfs - 1;
302  while (idx >= 0) {
303  /* request a packet from the currently selected filter */
304  ret = av_bsf_receive_packet(s->bsfs[idx], pkt);
305  if (ret == AVERROR(EAGAIN)) {
306  /* no packets available, try the next filter up the chain */
307  ret = 0;
308  idx--;
309  continue;
310  } else if (ret < 0 && ret != AVERROR_EOF) {
311  return ret;
312  }
313 
314  /* got a packet or EOF -- pass it to the caller or to the next filter
315  * down the chain */
316  if (idx == s->nb_bsfs - 1) {
317  return ret;
318  } else {
319  idx++;
320  ret = av_bsf_send_packet(s->bsfs[idx], ret < 0 ? NULL : pkt);
321  if (ret < 0) {
322  av_log(avctx, AV_LOG_ERROR,
323  "Error pre-processing a packet before decoding\n");
324  av_packet_unref(pkt);
325  return ret;
326  }
327  }
328  }
329 
330  return AVERROR(EAGAIN);
331 }
332 
334 {
335  AVCodecInternal *avci = avctx->internal;
336  int ret;
337 
338  if (avci->draining)
339  return AVERROR_EOF;
340 
341  ret = bsfs_poll(avctx, pkt);
342  if (ret == AVERROR_EOF)
343  avci->draining = 1;
344  if (ret < 0)
345  return ret;
346 
347  ret = extract_packet_props(avctx->internal, pkt);
348  if (ret < 0)
349  goto finish;
350 
351  ret = apply_param_change(avctx, pkt);
352  if (ret < 0)
353  goto finish;
354 
355  if (avctx->codec->receive_frame)
356  avci->compat_decode_consumed += pkt->size;
357 
358  return 0;
359 finish:
360  av_packet_unref(pkt);
361  return ret;
362 }
363 
364 /**
365  * Attempt to guess proper monotonic timestamps for decoded video frames
366  * which might have incorrect times. Input timestamps may wrap around, in
367  * which case the output will as well.
368  *
369  * @param pts the pts field of the decoded AVPacket, as passed through
370  * AVFrame.pts
371  * @param dts the dts field of the decoded AVPacket
372  * @return one of the input values, may be AV_NOPTS_VALUE
373  */
375  int64_t reordered_pts, int64_t dts)
376 {
377  int64_t pts = AV_NOPTS_VALUE;
378 
379  if (dts != AV_NOPTS_VALUE) {
381  ctx->pts_correction_last_dts = dts;
382  } else if (reordered_pts != AV_NOPTS_VALUE)
383  ctx->pts_correction_last_dts = reordered_pts;
384 
385  if (reordered_pts != AV_NOPTS_VALUE) {
386  ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
387  ctx->pts_correction_last_pts = reordered_pts;
388  } else if(dts != AV_NOPTS_VALUE)
389  ctx->pts_correction_last_pts = dts;
390 
392  && reordered_pts != AV_NOPTS_VALUE)
393  pts = reordered_pts;
394  else
395  pts = dts;
396 
397  return pts;
398 }
399 
400 /*
401  * The core of the receive_frame_wrapper for the decoders implementing
402  * the simple API. Certain decoders might consume partial packets without
403  * returning any output, so this function needs to be called in a loop until it
404  * returns EAGAIN.
405  **/
407 {
408  AVCodecInternal *avci = avctx->internal;
409  DecodeSimpleContext *ds = &avci->ds;
410  AVPacket *pkt = ds->in_pkt;
411  // copy to ensure we do not change pkt
412  int got_frame, actual_got_frame;
413  int ret;
414 
415  if (!pkt->data && !avci->draining) {
416  av_packet_unref(pkt);
417  ret = ff_decode_get_packet(avctx, pkt);
418  if (ret < 0 && ret != AVERROR_EOF)
419  return ret;
420  }
421 
422  // Some codecs (at least wma lossless) will crash when feeding drain packets
423  // after EOF was signaled.
424  if (avci->draining_done)
425  return AVERROR_EOF;
426 
427  if (!pkt->data &&
428  !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY ||
430  return AVERROR_EOF;
431 
432  got_frame = 0;
433 
434  if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME) {
435  ret = ff_thread_decode_frame(avctx, frame, &got_frame, pkt);
436  } else {
437  ret = avctx->codec->decode(avctx, frame, &got_frame, pkt);
438 
440  frame->pkt_dts = pkt->dts;
441  if (avctx->codec->type == AVMEDIA_TYPE_VIDEO) {
442  if(!avctx->has_b_frames)
443  frame->pkt_pos = pkt->pos;
444  //FIXME these should be under if(!avctx->has_b_frames)
445  /* get_buffer is supposed to set frame parameters */
446  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DR1)) {
447  if (!frame->sample_aspect_ratio.num) frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
448  if (!frame->width) frame->width = avctx->width;
449  if (!frame->height) frame->height = avctx->height;
450  if (frame->format == AV_PIX_FMT_NONE) frame->format = avctx->pix_fmt;
451  }
452  }
453  }
454  emms_c();
455  actual_got_frame = got_frame;
456 
457  if (avctx->codec->type == AVMEDIA_TYPE_VIDEO) {
458  if (frame->flags & AV_FRAME_FLAG_DISCARD)
459  got_frame = 0;
460  if (got_frame)
462  frame->pts,
463  frame->pkt_dts);
464  } else if (avctx->codec->type == AVMEDIA_TYPE_AUDIO) {
465  uint8_t *side;
466  int side_size;
467  uint32_t discard_padding = 0;
468  uint8_t skip_reason = 0;
469  uint8_t discard_reason = 0;
470 
471  if (ret >= 0 && got_frame) {
473  frame->pts,
474  frame->pkt_dts);
475  if (frame->format == AV_SAMPLE_FMT_NONE)
476  frame->format = avctx->sample_fmt;
477  if (!frame->channel_layout)
478  frame->channel_layout = avctx->channel_layout;
479  if (!frame->channels)
480  frame->channels = avctx->channels;
481  if (!frame->sample_rate)
482  frame->sample_rate = avctx->sample_rate;
483  }
484 
486  if(side && side_size>=10) {
488  discard_padding = AV_RL32(side + 4);
489  av_log(avctx, AV_LOG_DEBUG, "skip %d / discard %d samples due to side data\n",
490  avctx->internal->skip_samples, (int)discard_padding);
491  skip_reason = AV_RL8(side + 8);
492  discard_reason = AV_RL8(side + 9);
493  }
494 
495  if ((frame->flags & AV_FRAME_FLAG_DISCARD) && got_frame &&
496  !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
497  avctx->internal->skip_samples = FFMAX(0, avctx->internal->skip_samples - frame->nb_samples);
498  got_frame = 0;
499  }
500 
501  if (avctx->internal->skip_samples > 0 && got_frame &&
502  !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
503  if(frame->nb_samples <= avctx->internal->skip_samples){
504  got_frame = 0;
505  avctx->internal->skip_samples -= frame->nb_samples;
506  av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
507  avctx->internal->skip_samples);
508  } else {
510  frame->nb_samples - avctx->internal->skip_samples, avctx->channels, frame->format);
511  if(avctx->pkt_timebase.num && avctx->sample_rate) {
512  int64_t diff_ts = av_rescale_q(avctx->internal->skip_samples,
513  (AVRational){1, avctx->sample_rate},
514  avctx->pkt_timebase);
515  if(frame->pts!=AV_NOPTS_VALUE)
516  frame->pts += diff_ts;
517 #if FF_API_PKT_PTS
519  if(frame->pkt_pts!=AV_NOPTS_VALUE)
520  frame->pkt_pts += diff_ts;
522 #endif
523  if(frame->pkt_dts!=AV_NOPTS_VALUE)
524  frame->pkt_dts += diff_ts;
525  if (frame->pkt_duration >= diff_ts)
526  frame->pkt_duration -= diff_ts;
527  } else {
528  av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
529  }
530  av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
531  avctx->internal->skip_samples, frame->nb_samples);
532  frame->nb_samples -= avctx->internal->skip_samples;
533  avctx->internal->skip_samples = 0;
534  }
535  }
536 
537  if (discard_padding > 0 && discard_padding <= frame->nb_samples && got_frame &&
538  !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
539  if (discard_padding == frame->nb_samples) {
540  got_frame = 0;
541  } else {
542  if(avctx->pkt_timebase.num && avctx->sample_rate) {
543  int64_t diff_ts = av_rescale_q(frame->nb_samples - discard_padding,
544  (AVRational){1, avctx->sample_rate},
545  avctx->pkt_timebase);
546  frame->pkt_duration = diff_ts;
547  } else {
548  av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for discarded samples.\n");
549  }
550  av_log(avctx, AV_LOG_DEBUG, "discard %d/%d samples\n",
551  (int)discard_padding, frame->nb_samples);
552  frame->nb_samples -= discard_padding;
553  }
554  }
555 
556  if ((avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL) && got_frame) {
558  if (fside) {
559  AV_WL32(fside->data, avctx->internal->skip_samples);
560  AV_WL32(fside->data + 4, discard_padding);
561  AV_WL8(fside->data + 8, skip_reason);
562  AV_WL8(fside->data + 9, discard_reason);
563  avctx->internal->skip_samples = 0;
564  }
565  }
566  }
567 
568  if (avctx->codec->type == AVMEDIA_TYPE_AUDIO &&
569  !avci->showed_multi_packet_warning &&
570  ret >= 0 && ret != pkt->size && !(avctx->codec->capabilities & AV_CODEC_CAP_SUBFRAMES)) {
571  av_log(avctx, AV_LOG_WARNING, "Multiple frames in a packet.\n");
572  avci->showed_multi_packet_warning = 1;
573  }
574 
575  if (!got_frame)
577 
578  if (ret >= 0 && avctx->codec->type == AVMEDIA_TYPE_VIDEO && !(avctx->flags & AV_CODEC_FLAG_TRUNCATED))
579  ret = pkt->size;
580 
581 #if FF_API_AVCTX_TIMEBASE
582  if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
583  avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
584 #endif
585 
586  /* do not stop draining when actual_got_frame != 0 or ret < 0 */
587  /* got_frame == 0 but actual_got_frame != 0 when frame is discarded */
588  if (avctx->internal->draining && !actual_got_frame) {
589  if (ret < 0) {
590  /* prevent infinite loop if a decoder wrongly always return error on draining */
591  /* reasonable nb_errors_max = maximum b frames + thread count */
592  int nb_errors_max = 20 + (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME ?
593  avctx->thread_count : 1);
594 
595  if (avci->nb_draining_errors++ >= nb_errors_max) {
596  av_log(avctx, AV_LOG_ERROR, "Too many errors when draining, this is a bug. "
597  "Stop draining and force EOF.\n");
598  avci->draining_done = 1;
599  ret = AVERROR_BUG;
600  }
601  } else {
602  avci->draining_done = 1;
603  }
604  }
605 
606  avci->compat_decode_consumed += ret;
607 
608  if (ret >= pkt->size || ret < 0) {
610  } else {
611  int consumed = ret;
612 
613  pkt->data += consumed;
614  pkt->size -= consumed;
615  avci->last_pkt_props->size -= consumed; // See extract_packet_props() comment.
618  avci->last_pkt_props->pts = AV_NOPTS_VALUE;
619  avci->last_pkt_props->dts = AV_NOPTS_VALUE;
620  }
621 
622  if (got_frame)
623  av_assert0(frame->buf[0]);
624 
625  return ret < 0 ? ret : 0;
626 }
627 
629 {
630  int ret;
631 
632  while (!frame->buf[0]) {
633  ret = decode_simple_internal(avctx, frame);
634  if (ret < 0)
635  return ret;
636  }
637 
638  return 0;
639 }
640 
642 {
643  AVCodecInternal *avci = avctx->internal;
644  int ret;
645 
646  av_assert0(!frame->buf[0]);
647 
648  if (avctx->codec->receive_frame)
649  ret = avctx->codec->receive_frame(avctx, frame);
650  else
651  ret = decode_simple_receive_frame(avctx, frame);
652 
653  if (ret == AVERROR_EOF)
654  avci->draining_done = 1;
655 
656  if (!ret) {
657  /* the only case where decode data is not set should be decoders
658  * that do not call ff_get_buffer() */
659  av_assert0((frame->private_ref && frame->private_ref->size == sizeof(FrameDecodeData)) ||
660  !(avctx->codec->capabilities & AV_CODEC_CAP_DR1));
661 
662  if (frame->private_ref) {
664 
665  if (fdd->post_process) {
666  ret = fdd->post_process(avctx, frame);
667  if (ret < 0) {
668  av_frame_unref(frame);
669  return ret;
670  }
671  }
672  }
673  }
674 
675  /* free the per-frame decode data */
676  av_buffer_unref(&frame->private_ref);
677 
678  return ret;
679 }
680 
681 int attribute_align_arg avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt)
682 {
683  AVCodecInternal *avci = avctx->internal;
684  int ret;
685 
686  if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
687  return AVERROR(EINVAL);
688 
689  if (avctx->internal->draining)
690  return AVERROR_EOF;
691 
692  if (avpkt && !avpkt->size && avpkt->data)
693  return AVERROR(EINVAL);
694 
696  if (avpkt && (avpkt->data || avpkt->side_data_elems)) {
697  ret = av_packet_ref(avci->buffer_pkt, avpkt);
698  if (ret < 0)
699  return ret;
700  }
701 
702  ret = av_bsf_send_packet(avci->filter.bsfs[0], avci->buffer_pkt);
703  if (ret < 0) {
705  return ret;
706  }
707 
708  if (!avci->buffer_frame->buf[0]) {
709  ret = decode_receive_frame_internal(avctx, avci->buffer_frame);
710  if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
711  return ret;
712  }
713 
714  return 0;
715 }
716 
718 {
719  /* make sure we are noisy about decoders returning invalid cropping data */
720  if (frame->crop_left >= INT_MAX - frame->crop_right ||
721  frame->crop_top >= INT_MAX - frame->crop_bottom ||
722  (frame->crop_left + frame->crop_right) >= frame->width ||
723  (frame->crop_top + frame->crop_bottom) >= frame->height) {
724  av_log(avctx, AV_LOG_WARNING,
725  "Invalid cropping information set by a decoder: "
727  "(frame size %dx%d). This is a bug, please report it\n",
728  frame->crop_left, frame->crop_right, frame->crop_top, frame->crop_bottom,
729  frame->width, frame->height);
730  frame->crop_left = 0;
731  frame->crop_right = 0;
732  frame->crop_top = 0;
733  frame->crop_bottom = 0;
734  return 0;
735  }
736 
737  if (!avctx->apply_cropping)
738  return 0;
739 
740  return av_frame_apply_cropping(frame, avctx->flags & AV_CODEC_FLAG_UNALIGNED ?
742 }
743 
744 int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
745 {
746  AVCodecInternal *avci = avctx->internal;
747  int ret;
748 
749  av_frame_unref(frame);
750 
751  if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
752  return AVERROR(EINVAL);
753 
754  if (avci->buffer_frame->buf[0]) {
755  av_frame_move_ref(frame, avci->buffer_frame);
756  } else {
757  ret = decode_receive_frame_internal(avctx, frame);
758  if (ret < 0)
759  return ret;
760  }
761 
762  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
763  ret = apply_cropping(avctx, frame);
764  if (ret < 0) {
765  av_frame_unref(frame);
766  return ret;
767  }
768  }
769 
770  avctx->frame_number++;
771 
772  return 0;
773 }
774 
776  int *got_frame, const AVPacket *pkt)
777 {
778  AVCodecInternal *avci = avctx->internal;
779  int ret = 0;
780 
782 
783  if (avci->draining_done && pkt && pkt->size != 0) {
784  av_log(avctx, AV_LOG_WARNING, "Got unexpected packet after EOF\n");
785  avcodec_flush_buffers(avctx);
786  }
787 
788  *got_frame = 0;
789  avci->compat_decode = 1;
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 
857 int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
858  int *got_picture_ptr,
859  const AVPacket *avpkt)
860 {
861  return compat_decode(avctx, picture, got_picture_ptr, avpkt);
862 }
863 
864 int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
865  AVFrame *frame,
866  int *got_frame_ptr,
867  const AVPacket *avpkt)
868 {
869  return compat_decode(avctx, frame, got_frame_ptr, avpkt);
870 }
871 
873 {
874  memset(sub, 0, sizeof(*sub));
875  sub->pts = AV_NOPTS_VALUE;
876 }
877 
878 #define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
879 static int recode_subtitle(AVCodecContext *avctx,
880  AVPacket *outpkt, const AVPacket *inpkt)
881 {
882 #if CONFIG_ICONV
883  iconv_t cd = (iconv_t)-1;
884  int ret = 0;
885  char *inb, *outb;
886  size_t inl, outl;
887  AVPacket tmp;
888 #endif
889 
890  if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER || inpkt->size == 0)
891  return 0;
892 
893 #if CONFIG_ICONV
894  cd = iconv_open("UTF-8", avctx->sub_charenc);
895  av_assert0(cd != (iconv_t)-1);
896 
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  ret = AVERROR(ENOMEM);
903  goto end;
904  }
905 
906  ret = av_new_packet(&tmp, inl * UTF8_MAX_BYTES);
907  if (ret < 0)
908  goto end;
909  outpkt->buf = tmp.buf;
910  outpkt->data = tmp.data;
911  outpkt->size = tmp.size;
912  outb = outpkt->data;
913  outl = outpkt->size;
914 
915  if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
916  iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
917  outl >= outpkt->size || inl != 0) {
918  ret = FFMIN(AVERROR(errno), -1);
919  av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
920  "from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
921  av_packet_unref(&tmp);
922  goto end;
923  }
924  outpkt->size -= outl;
925  memset(outpkt->data + outpkt->size, 0, outl);
926 
927 end:
928  if (cd != (iconv_t)-1)
929  iconv_close(cd);
930  return ret;
931 #else
932  av_log(avctx, AV_LOG_ERROR, "requesting subtitles recoding without iconv");
933  return AVERROR(EINVAL);
934 #endif
935 }
936 
937 static int utf8_check(const uint8_t *str)
938 {
939  const uint8_t *byte;
940  uint32_t codepoint, min;
941 
942  while (*str) {
943  byte = str;
944  GET_UTF8(codepoint, *(byte++), return 0;);
945  min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
946  1 << (5 * (byte - str) - 4);
947  if (codepoint < min || codepoint >= 0x110000 ||
948  codepoint == 0xFFFE /* BOM */ ||
949  codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
950  return 0;
951  str = byte;
952  }
953  return 1;
954 }
955 
956 #if FF_API_ASS_TIMING
957 static void insert_ts(AVBPrint *buf, int ts)
958 {
959  if (ts == -1) {
960  av_bprintf(buf, "9:59:59.99,");
961  } else {
962  int h, m, s;
963 
964  h = ts/360000; ts -= 360000*h;
965  m = ts/ 6000; ts -= 6000*m;
966  s = ts/ 100; ts -= 100*s;
967  av_bprintf(buf, "%d:%02d:%02d.%02d,", h, m, s, ts);
968  }
969 }
970 
972 {
973  int i;
974  AVBPrint buf;
975 
977 
978  for (i = 0; i < sub->num_rects; i++) {
979  char *final_dialog;
980  const char *dialog;
981  AVSubtitleRect *rect = sub->rects[i];
982  int ts_start, ts_duration = -1;
983  long int layer;
984 
985  if (rect->type != SUBTITLE_ASS || !strncmp(rect->ass, "Dialogue: ", 10))
986  continue;
987 
988  av_bprint_clear(&buf);
989 
990  /* skip ReadOrder */
991  dialog = strchr(rect->ass, ',');
992  if (!dialog)
993  continue;
994  dialog++;
995 
996  /* extract Layer or Marked */
997  layer = strtol(dialog, (char**)&dialog, 10);
998  if (*dialog != ',')
999  continue;
1000  dialog++;
1001 
1002  /* rescale timing to ASS time base (ms) */
1003  ts_start = av_rescale_q(pkt->pts, tb, av_make_q(1, 100));
1004  if (pkt->duration != -1)
1005  ts_duration = av_rescale_q(pkt->duration, tb, av_make_q(1, 100));
1006  sub->end_display_time = FFMAX(sub->end_display_time, 10 * ts_duration);
1007 
1008  /* construct ASS (standalone file form with timestamps) string */
1009  av_bprintf(&buf, "Dialogue: %ld,", layer);
1010  insert_ts(&buf, ts_start);
1011  insert_ts(&buf, ts_duration == -1 ? -1 : ts_start + ts_duration);
1012  av_bprintf(&buf, "%s\r\n", dialog);
1013 
1014  final_dialog = av_strdup(buf.str);
1015  if (!av_bprint_is_complete(&buf) || !final_dialog) {
1016  av_freep(&final_dialog);
1017  av_bprint_finalize(&buf, NULL);
1018  return AVERROR(ENOMEM);
1019  }
1020  av_freep(&rect->ass);
1021  rect->ass = final_dialog;
1022  }
1023 
1024  av_bprint_finalize(&buf, NULL);
1025  return 0;
1026 }
1027 #endif
1028 
1030  int *got_sub_ptr,
1031  AVPacket *avpkt)
1032 {
1033  int i, ret = 0;
1034 
1035  if (!avpkt->data && avpkt->size) {
1036  av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
1037  return AVERROR(EINVAL);
1038  }
1039  if (!avctx->codec)
1040  return AVERROR(EINVAL);
1041  if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
1042  av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
1043  return AVERROR(EINVAL);
1044  }
1045 
1046  *got_sub_ptr = 0;
1047  get_subtitle_defaults(sub);
1048 
1049  if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size) {
1050  AVPacket pkt_recoded = *avpkt;
1051 
1052  ret = recode_subtitle(avctx, &pkt_recoded, avpkt);
1053  if (ret < 0) {
1054  *got_sub_ptr = 0;
1055  } else {
1056  ret = extract_packet_props(avctx->internal, &pkt_recoded);
1057  if (ret < 0)
1058  return ret;
1059 
1060  if (avctx->pkt_timebase.num && avpkt->pts != AV_NOPTS_VALUE)
1061  sub->pts = av_rescale_q(avpkt->pts,
1062  avctx->pkt_timebase, AV_TIME_BASE_Q);
1063  ret = avctx->codec->decode(avctx, sub, got_sub_ptr, &pkt_recoded);
1064  av_assert1((ret >= 0) >= !!*got_sub_ptr &&
1065  !!*got_sub_ptr >= !!sub->num_rects);
1066 
1067 #if FF_API_ASS_TIMING
1069  && *got_sub_ptr && sub->num_rects) {
1070  const AVRational tb = avctx->pkt_timebase.num ? avctx->pkt_timebase
1071  : avctx->time_base;
1072  int err = convert_sub_to_old_ass_form(sub, avpkt, tb);
1073  if (err < 0)
1074  ret = err;
1075  }
1076 #endif
1077 
1078  if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
1079  avctx->pkt_timebase.num) {
1080  AVRational ms = { 1, 1000 };
1081  sub->end_display_time = av_rescale_q(avpkt->duration,
1082  avctx->pkt_timebase, ms);
1083  }
1084 
1086  sub->format = 0;
1087  else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB)
1088  sub->format = 1;
1089 
1090  for (i = 0; i < sub->num_rects; i++) {
1092  sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
1093  av_log(avctx, AV_LOG_ERROR,
1094  "Invalid UTF-8 in decoded subtitles text; "
1095  "maybe missing -sub_charenc option\n");
1096  avsubtitle_free(sub);
1097  ret = AVERROR_INVALIDDATA;
1098  break;
1099  }
1100  }
1101 
1102  if (avpkt->data != pkt_recoded.data) { // did we recode?
1103  /* prevent from destroying side data from original packet */
1104  pkt_recoded.side_data = NULL;
1105  pkt_recoded.side_data_elems = 0;
1106 
1107  av_packet_unref(&pkt_recoded);
1108  }
1109  }
1110 
1111  if (*got_sub_ptr)
1112  avctx->frame_number++;
1113  }
1114 
1115  return ret;
1116 }
1117 
1119  const enum AVPixelFormat *fmt)
1120 {
1121  const AVPixFmtDescriptor *desc;
1122  const AVCodecHWConfig *config;
1123  int i, n;
1124 
1125  // If a device was supplied when the codec was opened, assume that the
1126  // user wants to use it.
1127  if (avctx->hw_device_ctx && avctx->codec->hw_configs) {
1128  AVHWDeviceContext *device_ctx =
1130  for (i = 0;; i++) {
1131  config = &avctx->codec->hw_configs[i]->public;
1132  if (!config)
1133  break;
1134  if (!(config->methods &
1136  continue;
1137  if (device_ctx->type != config->device_type)
1138  continue;
1139  for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++) {
1140  if (config->pix_fmt == fmt[n])
1141  return fmt[n];
1142  }
1143  }
1144  }
1145  // No device or other setup, so we have to choose from things which
1146  // don't any other external information.
1147 
1148  // If the last element of the list is a software format, choose it
1149  // (this should be best software format if any exist).
1150  for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++);
1151  desc = av_pix_fmt_desc_get(fmt[n - 1]);
1152  if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
1153  return fmt[n - 1];
1154 
1155  // Finally, traverse the list in order and choose the first entry
1156  // with no external dependencies (if there is no hardware configuration
1157  // information available then this just picks the first entry).
1158  for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++) {
1159  for (i = 0;; i++) {
1160  config = avcodec_get_hw_config(avctx->codec, i);
1161  if (!config)
1162  break;
1163  if (config->pix_fmt == fmt[n])
1164  break;
1165  }
1166  if (!config) {
1167  // No specific config available, so the decoder must be able
1168  // to handle this format without any additional setup.
1169  return fmt[n];
1170  }
1172  // Usable with only internal setup.
1173  return fmt[n];
1174  }
1175  }
1176 
1177  // Nothing is usable, give up.
1178  return AV_PIX_FMT_NONE;
1179 }
1180 
1182  enum AVHWDeviceType dev_type)
1183 {
1184  AVHWDeviceContext *device_ctx;
1185  AVHWFramesContext *frames_ctx;
1186  int ret;
1187 
1188  if (!avctx->hwaccel)
1189  return AVERROR(ENOSYS);
1190 
1191  if (avctx->hw_frames_ctx)
1192  return 0;
1193  if (!avctx->hw_device_ctx) {
1194  av_log(avctx, AV_LOG_ERROR, "A hardware frames or device context is "
1195  "required for hardware accelerated decoding.\n");
1196  return AVERROR(EINVAL);
1197  }
1198 
1199  device_ctx = (AVHWDeviceContext *)avctx->hw_device_ctx->data;
1200  if (device_ctx->type != dev_type) {
1201  av_log(avctx, AV_LOG_ERROR, "Device type %s expected for hardware "
1202  "decoding, but got %s.\n", av_hwdevice_get_type_name(dev_type),
1203  av_hwdevice_get_type_name(device_ctx->type));
1204  return AVERROR(EINVAL);
1205  }
1206 
1208  avctx->hw_device_ctx,
1209  avctx->hwaccel->pix_fmt,
1210  &avctx->hw_frames_ctx);
1211  if (ret < 0)
1212  return ret;
1213 
1214  frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
1215 
1216 
1217  if (frames_ctx->initial_pool_size) {
1218  // We guarantee 4 base work surfaces. The function above guarantees 1
1219  // (the absolute minimum), so add the missing count.
1220  frames_ctx->initial_pool_size += 3;
1221  }
1222 
1223  ret = av_hwframe_ctx_init(avctx->hw_frames_ctx);
1224  if (ret < 0) {
1225  av_buffer_unref(&avctx->hw_frames_ctx);
1226  return ret;
1227  }
1228 
1229  return 0;
1230 }
1231 
1233  AVBufferRef *device_ref,
1235  AVBufferRef **out_frames_ref)
1236 {
1237  AVBufferRef *frames_ref = NULL;
1238  const AVCodecHWConfigInternal *hw_config;
1239  const AVHWAccel *hwa;
1240  int i, ret;
1241 
1242  for (i = 0;; i++) {
1243  hw_config = avctx->codec->hw_configs[i];
1244  if (!hw_config)
1245  return AVERROR(ENOENT);
1246  if (hw_config->public.pix_fmt == hw_pix_fmt)
1247  break;
1248  }
1249 
1250  hwa = hw_config->hwaccel;
1251  if (!hwa || !hwa->frame_params)
1252  return AVERROR(ENOENT);
1253 
1254  frames_ref = av_hwframe_ctx_alloc(device_ref);
1255  if (!frames_ref)
1256  return AVERROR(ENOMEM);
1257 
1258  ret = hwa->frame_params(avctx, frames_ref);
1259  if (ret >= 0) {
1260  AVHWFramesContext *frames_ctx = (AVHWFramesContext*)frames_ref->data;
1261 
1262  if (frames_ctx->initial_pool_size) {
1263  // If the user has requested that extra output surfaces be
1264  // available then add them here.
1265  if (avctx->extra_hw_frames > 0)
1266  frames_ctx->initial_pool_size += avctx->extra_hw_frames;
1267 
1268  // If frame threading is enabled then an extra surface per thread
1269  // is also required.
1270  if (avctx->active_thread_type & FF_THREAD_FRAME)
1271  frames_ctx->initial_pool_size += avctx->thread_count;
1272  }
1273 
1274  *out_frames_ref = frames_ref;
1275  } else {
1276  av_buffer_unref(&frames_ref);
1277  }
1278  return ret;
1279 }
1280 
1281 static int hwaccel_init(AVCodecContext *avctx,
1282  const AVCodecHWConfigInternal *hw_config)
1283 {
1284  const AVHWAccel *hwaccel;
1285  int err;
1286 
1287  hwaccel = hw_config->hwaccel;
1290  av_log(avctx, AV_LOG_WARNING, "Ignoring experimental hwaccel: %s\n",
1291  hwaccel->name);
1292  return AVERROR_PATCHWELCOME;
1293  }
1294 
1295  if (hwaccel->priv_data_size) {
1296  avctx->internal->hwaccel_priv_data =
1297  av_mallocz(hwaccel->priv_data_size);
1298  if (!avctx->internal->hwaccel_priv_data)
1299  return AVERROR(ENOMEM);
1300  }
1301 
1302  avctx->hwaccel = hwaccel;
1303  if (hwaccel->init) {
1304  err = hwaccel->init(avctx);
1305  if (err < 0) {
1306  av_log(avctx, AV_LOG_ERROR, "Failed setup for format %s: "
1307  "hwaccel initialisation returned error.\n",
1308  av_get_pix_fmt_name(hw_config->public.pix_fmt));
1310  avctx->hwaccel = NULL;
1311  return err;
1312  }
1313  }
1314 
1315  return 0;
1316 }
1317 
1318 static void hwaccel_uninit(AVCodecContext *avctx)
1319 {
1320  if (avctx->hwaccel && avctx->hwaccel->uninit)
1321  avctx->hwaccel->uninit(avctx);
1322 
1324 
1325  avctx->hwaccel = NULL;
1326 
1327  av_buffer_unref(&avctx->hw_frames_ctx);
1328 }
1329 
1331 {
1332  const AVPixFmtDescriptor *desc;
1333  enum AVPixelFormat *choices;
1334  enum AVPixelFormat ret, user_choice;
1335  const AVCodecHWConfigInternal *hw_config;
1336  const AVCodecHWConfig *config;
1337  int i, n, err;
1338 
1339  // Find end of list.
1340  for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++);
1341  // Must contain at least one entry.
1342  av_assert0(n >= 1);
1343  // If a software format is available, it must be the last entry.
1344  desc = av_pix_fmt_desc_get(fmt[n - 1]);
1345  if (desc->flags & AV_PIX_FMT_FLAG_HWACCEL) {
1346  // No software format is available.
1347  } else {
1348  avctx->sw_pix_fmt = fmt[n - 1];
1349  }
1350 
1351  choices = av_malloc_array(n + 1, sizeof(*choices));
1352  if (!choices)
1353  return AV_PIX_FMT_NONE;
1354 
1355  memcpy(choices, fmt, (n + 1) * sizeof(*choices));
1356 
1357  for (;;) {
1358  // Remove the previous hwaccel, if there was one.
1359  hwaccel_uninit(avctx);
1360 
1361  user_choice = avctx->get_format(avctx, choices);
1362  if (user_choice == AV_PIX_FMT_NONE) {
1363  // Explicitly chose nothing, give up.
1364  ret = AV_PIX_FMT_NONE;
1365  break;
1366  }
1367 
1368  desc = av_pix_fmt_desc_get(user_choice);
1369  if (!desc) {
1370  av_log(avctx, AV_LOG_ERROR, "Invalid format returned by "
1371  "get_format() callback.\n");
1372  ret = AV_PIX_FMT_NONE;
1373  break;
1374  }
1375  av_log(avctx, AV_LOG_DEBUG, "Format %s chosen by get_format().\n",
1376  desc->name);
1377 
1378  for (i = 0; i < n; i++) {
1379  if (choices[i] == user_choice)
1380  break;
1381  }
1382  if (i == n) {
1383  av_log(avctx, AV_LOG_ERROR, "Invalid return from get_format(): "
1384  "%s not in possible list.\n", desc->name);
1385  break;
1386  }
1387 
1388  if (avctx->codec->hw_configs) {
1389  for (i = 0;; i++) {
1390  hw_config = avctx->codec->hw_configs[i];
1391  if (!hw_config)
1392  break;
1393  if (hw_config->public.pix_fmt == user_choice)
1394  break;
1395  }
1396  } else {
1397  hw_config = NULL;
1398  }
1399 
1400  if (!hw_config) {
1401  // No config available, so no extra setup required.
1402  ret = user_choice;
1403  break;
1404  }
1405  config = &hw_config->public;
1406 
1407  if (config->methods &
1409  avctx->hw_frames_ctx) {
1410  const AVHWFramesContext *frames_ctx =
1412  if (frames_ctx->format != user_choice) {
1413  av_log(avctx, AV_LOG_ERROR, "Invalid setup for format %s: "
1414  "does not match the format of the provided frames "
1415  "context.\n", desc->name);
1416  goto try_again;
1417  }
1418  } else if (config->methods &
1420  avctx->hw_device_ctx) {
1421  const AVHWDeviceContext *device_ctx =
1423  if (device_ctx->type != config->device_type) {
1424  av_log(avctx, AV_LOG_ERROR, "Invalid setup for format %s: "
1425  "does not match the type of the provided device "
1426  "context.\n", desc->name);
1427  goto try_again;
1428  }
1429  } else if (config->methods &
1431  // Internal-only setup, no additional configuration.
1432  } else if (config->methods &
1434  // Some ad-hoc configuration we can't see and can't check.
1435  } else {
1436  av_log(avctx, AV_LOG_ERROR, "Invalid setup for format %s: "
1437  "missing configuration.\n", desc->name);
1438  goto try_again;
1439  }
1440  if (hw_config->hwaccel) {
1441  av_log(avctx, AV_LOG_DEBUG, "Format %s requires hwaccel "
1442  "initialisation.\n", desc->name);
1443  err = hwaccel_init(avctx, hw_config);
1444  if (err < 0)
1445  goto try_again;
1446  }
1447  ret = user_choice;
1448  break;
1449 
1450  try_again:
1451  av_log(avctx, AV_LOG_DEBUG, "Format %s not usable, retrying "
1452  "get_format() without it.\n", desc->name);
1453  for (i = 0; i < n; i++) {
1454  if (choices[i] == user_choice)
1455  break;
1456  }
1457  for (; i + 1 < n; i++)
1458  choices[i] = choices[i + 1];
1459  --n;
1460  }
1461 
1462  av_freep(&choices);
1463  return ret;
1464 }
1465 
1467 {
1468  FramePool *pool = avctx->internal->pool;
1469  int i, ret;
1470 
1471  switch (avctx->codec_type) {
1472  case AVMEDIA_TYPE_VIDEO: {
1473  uint8_t *data[4];
1474  int linesize[4];
1475  int size[4] = { 0 };
1476  int w = frame->width;
1477  int h = frame->height;
1478  int tmpsize, unaligned;
1479 
1480  if (pool->format == frame->format &&
1481  pool->width == frame->width && pool->height == frame->height)
1482  return 0;
1483 
1484  avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
1485 
1486  do {
1487  // NOTE: do not align linesizes individually, this breaks e.g. assumptions
1488  // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
1489  ret = av_image_fill_linesizes(linesize, avctx->pix_fmt, w);
1490  if (ret < 0)
1491  return ret;
1492  // increase alignment of w for next try (rhs gives the lowest bit set in w)
1493  w += w & ~(w - 1);
1494 
1495  unaligned = 0;
1496  for (i = 0; i < 4; i++)
1497  unaligned |= linesize[i] % pool->stride_align[i];
1498  } while (unaligned);
1499 
1500  tmpsize = av_image_fill_pointers(data, avctx->pix_fmt, h,
1501  NULL, linesize);
1502  if (tmpsize < 0)
1503  return -1;
1504 
1505  for (i = 0; i < 3 && data[i + 1]; i++)
1506  size[i] = data[i + 1] - data[i];
1507  size[i] = tmpsize - (data[i] - data[0]);
1508 
1509  for (i = 0; i < 4; i++) {
1510  av_buffer_pool_uninit(&pool->pools[i]);
1511  pool->linesize[i] = linesize[i];
1512  if (size[i]) {
1513  pool->pools[i] = av_buffer_pool_init(size[i] + 16 + STRIDE_ALIGN - 1,
1514  CONFIG_MEMORY_POISONING ?
1515  NULL :
1517  if (!pool->pools[i]) {
1518  ret = AVERROR(ENOMEM);
1519  goto fail;
1520  }
1521  }
1522  }
1523  pool->format = frame->format;
1524  pool->width = frame->width;
1525  pool->height = frame->height;
1526 
1527  break;
1528  }
1529  case AVMEDIA_TYPE_AUDIO: {
1530  int ch = frame->channels; //av_get_channel_layout_nb_channels(frame->channel_layout);
1531  int planar = av_sample_fmt_is_planar(frame->format);
1532  int planes = planar ? ch : 1;
1533 
1534  if (pool->format == frame->format && pool->planes == planes &&
1535  pool->channels == ch && frame->nb_samples == pool->samples)
1536  return 0;
1537 
1538  av_buffer_pool_uninit(&pool->pools[0]);
1539  ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
1540  frame->nb_samples, frame->format, 0);
1541  if (ret < 0)
1542  goto fail;
1543 
1544  pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
1545  if (!pool->pools[0]) {
1546  ret = AVERROR(ENOMEM);
1547  goto fail;
1548  }
1549 
1550  pool->format = frame->format;
1551  pool->planes = planes;
1552  pool->channels = ch;
1553  pool->samples = frame->nb_samples;
1554  break;
1555  }
1556  default: av_assert0(0);
1557  }
1558  return 0;
1559 fail:
1560  for (i = 0; i < 4; i++)
1561  av_buffer_pool_uninit(&pool->pools[i]);
1562  pool->format = -1;
1563  pool->planes = pool->channels = pool->samples = 0;
1564  pool->width = pool->height = 0;
1565  return ret;
1566 }
1567 
1569 {
1570  FramePool *pool = avctx->internal->pool;
1571  int planes = pool->planes;
1572  int i;
1573 
1574  frame->linesize[0] = pool->linesize[0];
1575 
1576  if (planes > AV_NUM_DATA_POINTERS) {
1577  frame->extended_data = av_mallocz_array(planes, sizeof(*frame->extended_data));
1578  frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
1580  sizeof(*frame->extended_buf));
1581  if (!frame->extended_data || !frame->extended_buf) {
1582  av_freep(&frame->extended_data);
1583  av_freep(&frame->extended_buf);
1584  return AVERROR(ENOMEM);
1585  }
1586  } else {
1587  frame->extended_data = frame->data;
1588  av_assert0(frame->nb_extended_buf == 0);
1589  }
1590 
1591  for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
1592  frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
1593  if (!frame->buf[i])
1594  goto fail;
1595  frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
1596  }
1597  for (i = 0; i < frame->nb_extended_buf; i++) {
1598  frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
1599  if (!frame->extended_buf[i])
1600  goto fail;
1601  frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
1602  }
1603 
1604  if (avctx->debug & FF_DEBUG_BUFFERS)
1605  av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
1606 
1607  return 0;
1608 fail:
1609  av_frame_unref(frame);
1610  return AVERROR(ENOMEM);
1611 }
1612 
1614 {
1615  FramePool *pool = s->internal->pool;
1617  int i;
1618 
1619  if (pic->data[0] || pic->data[1] || pic->data[2] || pic->data[3]) {
1620  av_log(s, AV_LOG_ERROR, "pic->data[*]!=NULL in avcodec_default_get_buffer\n");
1621  return -1;
1622  }
1623 
1624  if (!desc) {
1625  av_log(s, AV_LOG_ERROR,
1626  "Unable to get pixel format descriptor for format %s\n",
1627  av_get_pix_fmt_name(pic->format));
1628  return AVERROR(EINVAL);
1629  }
1630 
1631  memset(pic->data, 0, sizeof(pic->data));
1632  pic->extended_data = pic->data;
1633 
1634  for (i = 0; i < 4 && pool->pools[i]; i++) {
1635  pic->linesize[i] = pool->linesize[i];
1636 
1637  pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
1638  if (!pic->buf[i])
1639  goto fail;
1640 
1641  pic->data[i] = pic->buf[i]->data;
1642  }
1643  for (; i < AV_NUM_DATA_POINTERS; i++) {
1644  pic->data[i] = NULL;
1645  pic->linesize[i] = 0;
1646  }
1647  if (desc->flags & AV_PIX_FMT_FLAG_PAL ||
1648  ((desc->flags & FF_PSEUDOPAL) && pic->data[1]))
1649  avpriv_set_systematic_pal2((uint32_t *)pic->data[1], pic->format);
1650 
1651  if (s->debug & FF_DEBUG_BUFFERS)
1652  av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
1653 
1654  return 0;
1655 fail:
1656  av_frame_unref(pic);
1657  return AVERROR(ENOMEM);
1658 }
1659 
1661 {
1662  int ret;
1663 
1664  if (avctx->hw_frames_ctx) {
1665  ret = av_hwframe_get_buffer(avctx->hw_frames_ctx, frame, 0);
1666  frame->width = avctx->coded_width;
1667  frame->height = avctx->coded_height;
1668  return ret;
1669  }
1670 
1671  if ((ret = update_frame_pool(avctx, frame)) < 0)
1672  return ret;
1673 
1674  switch (avctx->codec_type) {
1675  case AVMEDIA_TYPE_VIDEO:
1676  return video_get_buffer(avctx, frame);
1677  case AVMEDIA_TYPE_AUDIO:
1678  return audio_get_buffer(avctx, frame);
1679  default:
1680  return -1;
1681  }
1682 }
1683 
1685 {
1686  int size;
1687  const uint8_t *side_metadata;
1688 
1689  AVDictionary **frame_md = &frame->metadata;
1690 
1691  side_metadata = av_packet_get_side_data(avpkt,
1693  return av_packet_unpack_dictionary(side_metadata, size, frame_md);
1694 }
1695 
1697 {
1698  const AVPacket *pkt = avctx->internal->last_pkt_props;
1699  int i;
1700  static const struct {
1701  enum AVPacketSideDataType packet;
1703  } sd[] = {
1712  };
1713 
1714  if (pkt) {
1715  frame->pts = pkt->pts;
1716 #if FF_API_PKT_PTS
1718  frame->pkt_pts = pkt->pts;
1720 #endif
1721  frame->pkt_pos = pkt->pos;
1722  frame->pkt_duration = pkt->duration;
1723  frame->pkt_size = pkt->size;
1724 
1725  for (i = 0; i < FF_ARRAY_ELEMS(sd); i++) {
1726  int size;
1727  uint8_t *packet_sd = av_packet_get_side_data(pkt, sd[i].packet, &size);
1728  if (packet_sd) {
1729  AVFrameSideData *frame_sd = av_frame_new_side_data(frame,
1730  sd[i].frame,
1731  size);
1732  if (!frame_sd)
1733  return AVERROR(ENOMEM);
1734 
1735  memcpy(frame_sd->data, packet_sd, size);
1736  }
1737  }
1738  add_metadata_from_side_data(pkt, frame);
1739 
1740  if (pkt->flags & AV_PKT_FLAG_DISCARD) {
1741  frame->flags |= AV_FRAME_FLAG_DISCARD;
1742  } else {
1743  frame->flags = (frame->flags & ~AV_FRAME_FLAG_DISCARD);
1744  }
1745  }
1746  frame->reordered_opaque = avctx->reordered_opaque;
1747 
1748  if (frame->color_primaries == AVCOL_PRI_UNSPECIFIED)
1749  frame->color_primaries = avctx->color_primaries;
1750  if (frame->color_trc == AVCOL_TRC_UNSPECIFIED)
1751  frame->color_trc = avctx->color_trc;
1752  if (frame->colorspace == AVCOL_SPC_UNSPECIFIED)
1753  frame->colorspace = avctx->colorspace;
1754  if (frame->color_range == AVCOL_RANGE_UNSPECIFIED)
1755  frame->color_range = avctx->color_range;
1757  frame->chroma_location = avctx->chroma_sample_location;
1758 
1759  switch (avctx->codec->type) {
1760  case AVMEDIA_TYPE_VIDEO:
1761  frame->format = avctx->pix_fmt;
1762  if (!frame->sample_aspect_ratio.num)
1763  frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
1764 
1765  if (frame->width && frame->height &&
1766  av_image_check_sar(frame->width, frame->height,
1767  frame->sample_aspect_ratio) < 0) {
1768  av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
1769  frame->sample_aspect_ratio.num,
1770  frame->sample_aspect_ratio.den);
1771  frame->sample_aspect_ratio = (AVRational){ 0, 1 };
1772  }
1773 
1774  break;
1775  case AVMEDIA_TYPE_AUDIO:
1776  if (!frame->sample_rate)
1777  frame->sample_rate = avctx->sample_rate;
1778  if (frame->format < 0)
1779  frame->format = avctx->sample_fmt;
1780  if (!frame->channel_layout) {
1781  if (avctx->channel_layout) {
1783  avctx->channels) {
1784  av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
1785  "configuration.\n");
1786  return AVERROR(EINVAL);
1787  }
1788 
1789  frame->channel_layout = avctx->channel_layout;
1790  } else {
1791  if (avctx->channels > FF_SANE_NB_CHANNELS) {
1792  av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
1793  avctx->channels);
1794  return AVERROR(ENOSYS);
1795  }
1796  }
1797  }
1798  frame->channels = avctx->channels;
1799  break;
1800  }
1801  return 0;
1802 }
1803 
1805 {
1806  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1807  int i;
1808  int num_planes = av_pix_fmt_count_planes(frame->format);
1810  int flags = desc ? desc->flags : 0;
1811  if (num_planes == 1 && (flags & AV_PIX_FMT_FLAG_PAL))
1812  num_planes = 2;
1813  if ((flags & FF_PSEUDOPAL) && frame->data[1])
1814  num_planes = 2;
1815  for (i = 0; i < num_planes; i++) {
1816  av_assert0(frame->data[i]);
1817  }
1818  // For formats without data like hwaccel allow unused pointers to be non-NULL.
1819  for (i = num_planes; num_planes > 0 && i < FF_ARRAY_ELEMS(frame->data); i++) {
1820  if (frame->data[i])
1821  av_log(avctx, AV_LOG_ERROR, "Buffer returned by get_buffer2() did not zero unused plane pointers\n");
1822  frame->data[i] = NULL;
1823  }
1824  }
1825 }
1826 
1827 static void decode_data_free(void *opaque, uint8_t *data)
1828 {
1829  FrameDecodeData *fdd = (FrameDecodeData*)data;
1830 
1831  if (fdd->post_process_opaque_free)
1833 
1834  if (fdd->hwaccel_priv_free)
1835  fdd->hwaccel_priv_free(fdd->hwaccel_priv);
1836 
1837  av_freep(&fdd);
1838 }
1839 
1841 {
1842  AVBufferRef *fdd_buf;
1843  FrameDecodeData *fdd;
1844 
1845  av_assert1(!frame->private_ref);
1846  av_buffer_unref(&frame->private_ref);
1847 
1848  fdd = av_mallocz(sizeof(*fdd));
1849  if (!fdd)
1850  return AVERROR(ENOMEM);
1851 
1852  fdd_buf = av_buffer_create((uint8_t*)fdd, sizeof(*fdd), decode_data_free,
1854  if (!fdd_buf) {
1855  av_freep(&fdd);
1856  return AVERROR(ENOMEM);
1857  }
1858 
1859  frame->private_ref = fdd_buf;
1860 
1861  return 0;
1862 }
1863 
1865 {
1866  const AVHWAccel *hwaccel = avctx->hwaccel;
1867  int override_dimensions = 1;
1868  int ret;
1869 
1870  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1871  if ((ret = av_image_check_size2(FFALIGN(avctx->width, STRIDE_ALIGN), avctx->height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx)) < 0 || avctx->pix_fmt<0) {
1872  av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
1873  return AVERROR(EINVAL);
1874  }
1875 
1876  if (frame->width <= 0 || frame->height <= 0) {
1877  frame->width = FFMAX(avctx->width, AV_CEIL_RSHIFT(avctx->coded_width, avctx->lowres));
1878  frame->height = FFMAX(avctx->height, AV_CEIL_RSHIFT(avctx->coded_height, avctx->lowres));
1879  override_dimensions = 0;
1880  }
1881 
1882  if (frame->data[0] || frame->data[1] || frame->data[2] || frame->data[3]) {
1883  av_log(avctx, AV_LOG_ERROR, "pic->data[*]!=NULL in get_buffer_internal\n");
1884  return AVERROR(EINVAL);
1885  }
1886  }
1887  ret = ff_decode_frame_props(avctx, frame);
1888  if (ret < 0)
1889  return ret;
1890 
1891  if (hwaccel) {
1892  if (hwaccel->alloc_frame) {
1893  ret = hwaccel->alloc_frame(avctx, frame);
1894  goto end;
1895  }
1896  } else
1897  avctx->sw_pix_fmt = avctx->pix_fmt;
1898 
1899  ret = avctx->get_buffer2(avctx, frame, flags);
1900  if (ret < 0)
1901  goto end;
1902 
1903  validate_avframe_allocation(avctx, frame);
1904 
1905  ret = ff_attach_decode_data(frame);
1906  if (ret < 0)
1907  goto end;
1908 
1909 end:
1910  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions &&
1912  frame->width = avctx->width;
1913  frame->height = avctx->height;
1914  }
1915 
1916  if (ret < 0)
1917  av_frame_unref(frame);
1918 
1919  return ret;
1920 }
1921 
1923 {
1924  int ret = get_buffer_internal(avctx, frame, flags);
1925  if (ret < 0) {
1926  av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
1927  frame->width = frame->height = 0;
1928  }
1929  return ret;
1930 }
1931 
1933 {
1934  AVFrame *tmp;
1935  int ret;
1936 
1938 
1939  if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
1940  av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
1941  frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt));
1942  av_frame_unref(frame);
1943  }
1944 
1945  if (!frame->data[0])
1946  return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1947 
1948  if (av_frame_is_writable(frame))
1949  return ff_decode_frame_props(avctx, frame);
1950 
1951  tmp = av_frame_alloc();
1952  if (!tmp)
1953  return AVERROR(ENOMEM);
1954 
1955  av_frame_move_ref(tmp, frame);
1956 
1957  ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1958  if (ret < 0) {
1959  av_frame_free(&tmp);
1960  return ret;
1961  }
1962 
1963  av_frame_copy(frame, tmp);
1964  av_frame_free(&tmp);
1965 
1966  return 0;
1967 }
1968 
1970 {
1971  int ret = reget_buffer_internal(avctx, frame);
1972  if (ret < 0)
1973  av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
1974  return ret;
1975 }
1976 
1977 static void bsfs_flush(AVCodecContext *avctx)
1978 {
1979  DecodeFilterContext *s = &avctx->internal->filter;
1980 
1981  for (int i = 0; i < s->nb_bsfs; i++)
1982  av_bsf_flush(s->bsfs[i]);
1983 }
1984 
1986 {
1987  avctx->internal->draining = 0;
1988  avctx->internal->draining_done = 0;
1989  avctx->internal->nb_draining_errors = 0;
1993  avctx->internal->buffer_pkt_valid = 0;
1994 
1995  av_packet_unref(avctx->internal->ds.in_pkt);
1996 
1997  if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
1998  ff_thread_flush(avctx);
1999  else if (avctx->codec->flush)
2000  avctx->codec->flush(avctx);
2001 
2002  avctx->pts_correction_last_pts =
2003  avctx->pts_correction_last_dts = INT64_MIN;
2004 
2005  bsfs_flush(avctx);
2006 
2007  if (!avctx->refcounted_frames)
2008  av_frame_unref(avctx->internal->to_free);
2009 }
2010 
2012 {
2013  DecodeFilterContext *s = &avctx->internal->filter;
2014  int i;
2015 
2016  for (i = 0; i < s->nb_bsfs; i++)
2017  av_bsf_free(&s->bsfs[i]);
2018  av_freep(&s->bsfs);
2019  s->nb_bsfs = 0;
2020 }
#define AV_PIX_FMT_FLAG_PAL
Pixel format has a palette in data[1], values are indexes in this palette.
Definition: pixdesc.h:132
#define FF_SANE_NB_CHANNELS
Definition: internal.h:86
This struct aggregates all the (hardware/vendor-specific) "high-level" state, i.e.
Definition: hwcontext.h:60
#define FF_COMPLIANCE_EXPERIMENTAL
Allow nonstandardized experimental things.
Definition: avcodec.h:2596
AVCodecHWConfig public
This is the structure which will be returned to the user by avcodec_get_hw_config().
Definition: hwaccel.h:34
int nb_draining_errors
Definition: internal.h:220
#define FF_SUB_CHARENC_MODE_PRE_DECODER
the AVPacket data needs to be recoded to UTF-8 before being fed to the decoder, requires iconv ...
Definition: avcodec.h:3113
void av_bsf_free(AVBSFContext **ctx)
Free a bitstream filter context and everything associated with it; write NULL into the supplied point...
Definition: bsf.c:35
#define NULL
Definition: coverity.c:32
int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
Select the (possibly hardware accelerated) pixel format.
Definition: decode.c:1330
const struct AVCodec * codec
Definition: avcodec.h:1541
const char const char void * val
Definition: avisynth_c.h:771
const AVCodecDescriptor * codec_descriptor
AVCodecDescriptor.
Definition: avcodec.h:3076
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
const AVClass * priv_class
A class for the private data, used to declare bitstream filter private AVOptions. ...
Definition: avcodec.h:5770
#define AV_NUM_DATA_POINTERS
Definition: frame.h:219
AVCodecParameters * par_out
Parameters of the output stream.
Definition: avcodec.h:5736
void av_bprintf(AVBPrint *buf, const char *fmt,...)
Definition: bprint.c:94
AVPacketSideDataType
Definition: avcodec.h:1151
int64_t pts_correction_num_faulty_dts
Number of incorrect PTS values so far.
Definition: avcodec.h:3093
void av_buffer_unref(AVBufferRef **buf)
Free a given reference and automatically free the buffer if there are no more references to it...
Definition: buffer.c:125
#define GET_UTF8(val, GET_BYTE, ERROR)
Convert a UTF-8 character (up to 4 bytes) to its 32-bit UCS-4 encoded form.
Definition: common.h:385
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2406
This structure describes decoded (raw) audio or video data.
Definition: frame.h:218
int(* init)(AVCodecContext *avctx)
Initialize the hwaccel private data.
Definition: avcodec.h:3721
int stride_align[AV_NUM_DATA_POINTERS]
Definition: internal.h:112
AVOption.
Definition: opt.h:246
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
This side data must be associated with an audio frame and corresponds to enum AVAudioServiceType defi...
Definition: frame.h:113
int apply_cropping
Video decoding only.
Definition: avcodec.h:3300
static int decode_receive_frame_internal(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:641
const struct AVCodecHWConfigInternal ** hw_configs
Array of pointers to hardware configurations supported by the codec, or NULL if no hardware supported...
Definition: avcodec.h:3564
#define AV_CODEC_FLAG2_SKIP_MANUAL
Do not skip samples and export skip information as frame side data.
Definition: avcodec.h:945
int coded_width
Bitstream width / height, may be different from width/height e.g.
Definition: avcodec.h:1720
int64_t pkt_pos
reordered pos from the last AVPacket that has been input into the decoder
Definition: frame.h:490
int capabilities
Hardware accelerated codec capabilities.
Definition: avcodec.h:3624
const char * fmt
Definition: avisynth_c.h:769
void(* flush)(AVCodecContext *)
Flush buffers.
Definition: avcodec.h:3544
AVPacket * last_pkt_props
Properties (timestamps+side data) extracted from the last packet passed for decoding.
Definition: internal.h:172
misc image utilities
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
static int convert_sub_to_old_ass_form(AVSubtitle *sub, const AVPacket *pkt, AVRational tb)
Definition: decode.c:971
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2446
AVFrame * to_free
Definition: internal.h:159
The codec supports this format by some internal method.
Definition: avcodec.h:3385
int64_t pos
byte position in stream, -1 if unknown
Definition: avcodec.h:1464
static void get_subtitle_defaults(AVSubtitle *sub)
Definition: decode.c:872
int ff_set_dimensions(AVCodecContext *s, int width, int height)
Check that the provided frame dimensions are valid and set them on the codec context.
Definition: utils.c:104
AVBufferRef * buf[AV_NUM_DATA_POINTERS]
AVBuffer references backing the data for this frame.
Definition: frame.h:410
static int decode_simple_receive_frame(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:628
const char * desc
Definition: nvenc.c:65
int width
Definition: internal.h:111
This side data should be associated with a video stream and contains Stereoscopic 3D information in f...
Definition: avcodec.h:1225
ATSC A53 Part 4 Closed Captions.
Definition: avcodec.h:1353
void(* post_process_opaque_free)(void *opaque)
Definition: decode.h:47
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition: avcodec.h:2163
int nb_extended_buf
Number of elements in extended_buf.
Definition: frame.h:428
int ff_decode_bsfs_init(AVCodecContext *avctx)
Definition: decode.c:185
Content light level (based on CTA-861.3).
Definition: frame.h:136
int num
Numerator.
Definition: rational.h:59
The bitstream filter state.
Definition: avcodec.h:5702
int size
Definition: avcodec.h:1445
const AVBitStreamFilter * av_bsf_get_by_name(const char *name)
enum AVPixelFormat pix_fmt
Supported pixel format.
Definition: avcodec.h:3618
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:1911
#define AV_CODEC_PROP_TEXT_SUB
Subtitle codec is text based.
Definition: avcodec.h:771
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1742
int samples
Definition: internal.h:116
static int decode_simple_internal(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:406
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
enum AVPixelFormat format
The pixel format identifying the underlying HW surface type.
Definition: hwcontext.h:208
Mastering display metadata associated with a video frame.
Definition: frame.h:119
unsigned num_rects
Definition: avcodec.h:3879
void av_frame_move_ref(AVFrame *dst, AVFrame *src)
Move everything contained in src to dst and reset src.
Definition: frame.c:580
static void bsfs_flush(AVCodecContext *avctx)
Definition: decode.c:1977
enum AVMediaType type
Definition: avcodec.h:3436
void(* hwaccel_priv_free)(void *priv)
Definition: decode.h:53
static int apply_param_change(AVCodecContext *avctx, const AVPacket *avpkt)
Definition: decode.c:48
static int get_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
Definition: decode.c:1864
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:236
static int recode_subtitle(AVCodecContext *avctx, AVPacket *outpkt, const AVPacket *inpkt)
Definition: decode.c:879
AVBufferPool * pools[4]
Pools for each data plane.
Definition: internal.h:105
int(* decode)(AVCodecContext *, void *outdata, int *outdata_size, AVPacket *avpkt)
Definition: avcodec.h:3521
int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
Set various frame properties from the codec context / packet data.
Definition: decode.c:1696
size_t crop_bottom
Definition: frame.h:578
static AVPacket pkt
int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub, int *got_sub_ptr, AVPacket *avpkt)
Decode a subtitle message.
Definition: decode.c:1029
const struct AVHWAccel * hwaccel
Hardware accelerator in use.
Definition: avcodec.h:2689
void * priv_data
Opaque filter-specific private data.
Definition: avcodec.h:5723
static int utf8_check(const uint8_t *str)
Definition: decode.c:937
int av_bsf_init(AVBSFContext *ctx)
Prepare the filter for use, after all the parameters and options have been set.
Definition: bsf.c:134
int av_bprint_finalize(AVBPrint *buf, char **ret_str)
Finalize a print buffer.
Definition: bprint.c:235
int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
Identical in function to av_frame_make_writable(), except it uses ff_get_buffer() to allocate the buf...
Definition: decode.c:1969
static int apply_cropping(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:717
void ff_decode_bsfs_uninit(AVCodecContext *avctx)
Definition: decode.c:2011
Mastering display metadata (based on SMPTE-2086:2014).
Definition: avcodec.h:1333
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avcodec.h:1655
int av_get_channel_layout_nb_channels(uint64_t channel_layout)
Return the number of channels in the channel layout.
AVSubtitleRect ** rects
Definition: avcodec.h:3880
int av_codec_is_decoder(const AVCodec *codec)
Definition: utils.c:99
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 av_bsf_alloc(const AVBitStreamFilter *filter, AVBSFContext **ctx)
Allocate a context for a given bitstream filter.
Definition: bsf.c:81
int av_opt_set_from_string(void *ctx, const char *opts, const char *const *shorthand, const char *key_val_sep, const char *pairs_sep)
Parse the key-value pairs list in opts.
Definition: opt.c:1499
#define AV_CODEC_CAP_DELAY
Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...
Definition: avcodec.h:992
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
const char * name
Definition: opt.h:247
int av_bsf_receive_packet(AVBSFContext *ctx, AVPacket *pkt)
Retrieve a filtered packet.
Definition: bsf.c:211
static void filter(int16_t *output, ptrdiff_t out_stride, int16_t *low, ptrdiff_t low_stride, int16_t *high, ptrdiff_t high_stride, int len, int clip)
Definition: cfhd.c:153
DecodeFilterContext filter
Definition: internal.h:166
int height
Definition: internal.h:111
enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *avctx, const enum AVPixelFormat *fmt)
Definition: decode.c:1118
enum AVSampleFormat sample_fmt
audio sample format
Definition: avcodec.h:2196
uint8_t
#define av_malloc(s)
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:189
int ff_attach_decode_data(AVFrame *frame)
Definition: decode.c:1840
int av_packet_unpack_dictionary(const uint8_t *data, int size, AVDictionary **dict)
Unpack a dictionary from side_data.
Definition: avpacket.c:517
AVOptions.
static int64_t guess_correct_pts(AVCodecContext *ctx, int64_t reordered_pts, int64_t dts)
Attempt to guess proper monotonic timestamps for decoded video frames which might have incorrect time...
Definition: decode.c:374
size_t crop_left
Definition: frame.h:579
int avpriv_set_systematic_pal2(uint32_t pal[256], enum AVPixelFormat pix_fmt)
Definition: imgutils.c:152
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: avcodec.h:1462
This side data contains a 3x3 transformation matrix describing an affine transformation that needs to...
Definition: avcodec.h:1219
#define AV_CODEC_FLAG_UNALIGNED
Allow decoders to produce frames with data planes that are not aligned to CPU requirements (e...
Definition: avcodec.h:837
#define AV_WL8(p, d)
Definition: intreadwrite.h:399
Multithreading support functions.
AVBufferRef * private_ref
AVBufferRef for internal use by a single libav* library.
Definition: frame.h:596
int ff_decode_get_packet(AVCodecContext *avctx, AVPacket *pkt)
Called by decoders to get the next packet for decoding.
Definition: decode.c:333
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:311
enum AVPixelFormat pix_fmt
A hardware pixel format which the codec can use.
Definition: avcodec.h:3401
int avcodec_parameters_to_context(AVCodecContext *codec, const AVCodecParameters *par)
Fill the codec context based on the values from the supplied codec parameters.
Definition: utils.c:2087
static AVFrame * frame
int planes
Definition: internal.h:114
Structure to hold side data for an AVFrame.
Definition: frame.h:180
int av_image_check_sar(unsigned int w, unsigned int h, AVRational sar)
Check if the given sample aspect ratio of an image is valid.
Definition: imgutils.c:287
size_t compat_decode_consumed
Definition: internal.h:209
static void finish(void)
Definition: movenc.c:345
uint8_t * data
Definition: avcodec.h:1444
#define AVERROR_EOF
End of file.
Definition: error.h:55
AVDictionary * metadata
metadata.
Definition: frame.h:505
int lowres
low resolution decoding, 1-> 1/2 size, 2->1/4 size
Definition: avcodec.h:2764
#define AV_BUFFER_FLAG_READONLY
Always treat the buffer as read-only, even when it has only one reference.
Definition: buffer.h:113
ptrdiff_t size
Definition: opengl_enc.c:101
#define flags(name, subs,...)
Definition: cbs_h2645.c:263
The data represents the AVSphericalMapping structure defined in libavutil/spherical.h.
Definition: frame.h:130
void * av_realloc_array(void *ptr, size_t nmemb, size_t size)
Definition: mem.c:198
static int bsfs_poll(AVCodecContext *avctx, AVPacket *pkt)
Definition: decode.c:295
enum AVChromaLocation chroma_sample_location
This defines the location of chroma samples.
Definition: avcodec.h:2170
#define FFALIGN(x, a)
Definition: macros.h:48
#define av_log(a,...)
const char * name
Definition: pixdesc.h:82
int av_packet_ref(AVPacket *dst, const AVPacket *src)
Setup a new reference to the data described by a given packet.
Definition: avpacket.c:601
int av_sample_fmt_is_planar(enum AVSampleFormat sample_fmt)
Check if the sample format is planar.
Definition: samplefmt.c:112
FramePool * pool
Definition: internal.h:161
void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, int linesize_align[AV_NUM_DATA_POINTERS])
Modify width and height values so that they will result in a memory buffer that is acceptable for the...
Definition: utils.c:154
int ff_thread_decode_frame(AVCodecContext *avctx, AVFrame *picture, int *got_picture_ptr, AVPacket *avpkt)
Submit a new frame to a decoding thread.
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
Definition: mathematics.c:142
#define AV_RL8(x)
Definition: intreadwrite.h:398
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
Definition: avpacket.c:86
AVRational pkt_timebase
Timebase in which pkt_dts/pts and AVPacket.dts/pts are.
Definition: avcodec.h:3069
int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
Copy the contents of src to dst.
Definition: utils.c:2012
int width
Definition: frame.h:276
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int has_b_frames
Size of the frame reordering buffer in the decoder.
Definition: avcodec.h:1822
void * post_process_opaque
Definition: decode.h:46
#define AV_BPRINT_SIZE_UNLIMITED
static int hwaccel_init(AVCodecContext *avctx, const AVCodecHWConfigInternal *hw_config)
Definition: decode.c:1281
static void validate_avframe_allocation(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:1804
#define AVERROR(e)
Definition: error.h:43
An AV_PKT_DATA_PARAM_CHANGE side data packet is laid out as follows:
Definition: avcodec.h:1183
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:873
uint8_t * av_packet_get_side_data(const AVPacket *pkt, enum AVPacketSideDataType type, int *size)
Get side information from packet.
Definition: avpacket.c:350
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:202
int64_t pts_correction_last_pts
Number of incorrect DTS values so far.
Definition: avcodec.h:3094
int active_thread_type
Which multithreading methods are in use by the codec.
Definition: avcodec.h:2803
int methods
Bit set of AV_CODEC_HW_CONFIG_METHOD_* flags, describing the possible setup methods which can be used...
Definition: avcodec.h:3406
void av_bprint_init(AVBPrint *buf, unsigned size_init, unsigned size_max)
Definition: bprint.c:69
int avcodec_is_open(AVCodecContext *s)
Definition: utils.c:1870
int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
Return decoded output data from a decoder.
Definition: decode.c:744
static int extract_packet_props(AVCodecInternal *avci, const AVPacket *pkt)
Definition: decode.c:126
AVFrame * buffer_frame
Definition: internal.h:202
int capabilities
Codec capabilities.
Definition: avcodec.h:3442
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition: frame.h:463
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
ATSC A53 Part 4 Closed Captions.
Definition: frame.h:58
AVBufferRef * buf
A reference to the reference-counted buffer where the packet data is stored.
Definition: avcodec.h:1427
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:1612
enum AVColorSpace colorspace
YUV colorspace type.
Definition: frame.h:474
AVRational time_base_in
The timebase used for the timestamps of the input packets.
Definition: avcodec.h:5742
#define AV_PIX_FMT_FLAG_HWACCEL
Pixel format is an HW accelerated format.
Definition: pixdesc.h:140
simple assert() macros that are a bit more flexible than ISO C assert().
const AVOption * av_opt_next(const void *obj, const AVOption *last)
Iterate over all AVOptions belonging to obj.
Definition: opt.c:45
int side_data_elems
Definition: avcodec.h:1456
AVBufferRef * av_buffer_create(uint8_t *data, int size, void(*free)(void *opaque, uint8_t *data), void *opaque, int flags)
Create an AVBuffer from an existing array.
Definition: buffer.c:28
int64_t max_pixels
The number of pixels per image to maximally accept.
Definition: avcodec.h:3242
int av_hwframe_ctx_init(AVBufferRef *ref)
Finalize the context before use.
Definition: hwcontext.c:329
static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:1932
enum AVHWDeviceType type
This field identifies the underlying API used for hardware access.
Definition: hwcontext.h:78
#define FFMAX(a, b)
Definition: common.h:94
int av_hwframe_get_buffer(AVBufferRef *hwframe_ref, AVFrame *frame, int flags)
Allocate a new frame attached to the given AVHWFramesContext.
Definition: hwcontext.c:465
#define fail()
Definition: checkasm.h:117
char * av_get_token(const char **buf, const char *term)
Unescape the given string until a non escaped terminating char, and return the token corresponding to...
Definition: avstring.c:149
int av_frame_copy(AVFrame *dst, const AVFrame *src)
Copy the frame data from src to dst.
Definition: frame.c:790
const AVHWAccel * hwaccel
If this configuration uses a hwaccel, a pointer to it.
Definition: hwaccel.h:39
#define FF_CODEC_CAP_EXPORTS_CROPPING
The decoder sets the cropping fields in the output frames manually.
Definition: internal.h:66
int priv_data_size
Size of the private data to allocate in AVCodecInternal.hwaccel_priv_data.
Definition: avcodec.h:3735
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1450
reference-counted frame API
uint64_t channel_layout
Audio channel layout.
Definition: avcodec.h:2239
The codec supports this format by some ad-hoc method.
Definition: avcodec.h:3394
uint32_t end_display_time
Definition: avcodec.h:3878
int64_t pts
Same as packet pts, in AV_TIME_BASE.
Definition: avcodec.h:3881
uint64_t channel_layout
Channel layout of the audio data.
Definition: frame.h:396
int props
Codec properties, a combination of AV_CODEC_PROP_* flags.
Definition: avcodec.h:723
size_t crop_top
Definition: frame.h:577
common internal API header
uint64_t flags
Combination of AV_PIX_FMT_FLAG_...
Definition: pixdesc.h:106
int initial_pool_size
Initial size of the frame pool.
Definition: hwcontext.h:198
int av_packet_copy_props(AVPacket *dst, const AVPacket *src)
Copy only "properties" fields from src to dst.
Definition: avpacket.c:558
int channels
number of audio channels, only used for audio.
Definition: frame.h:523
int flags
Frame flags, a combination of AV_FRAME_FLAGS.
Definition: frame.h:456
int err_recognition
Error recognition; may misdetect some more or less valid parts as errors.
Definition: avcodec.h:2657
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
#define FF_THREAD_FRAME
Decode more than one frame at once.
Definition: avcodec.h:2795
const char * name
Name of the hardware accelerated codec.
Definition: avcodec.h:3597
#define FFMIN(a, b)
Definition: common.h:96
AVBufferRef ** extended_buf
For planar audio which requires more than AV_NUM_DATA_POINTERS AVBufferRef pointers, this array will hold all the references which cannot fit into AVFrame.buf.
Definition: frame.h:424
int channels
Definition: internal.h:115
int(* alloc_frame)(AVCodecContext *avctx, AVFrame *frame)
Allocate a custom buffer.
Definition: avcodec.h:3637
AVFrame * compat_decode_frame
Definition: internal.h:213
int width
picture width / height.
Definition: avcodec.h:1705
uint8_t w
Definition: llviddspenc.c:38
AVBufferRef * hw_frames_ctx
A reference to the AVHWFramesContext describing the input (for encoding) or output (decoding) frames...
Definition: avcodec.h:3212
static int add_metadata_from_side_data(const AVPacket *avpkt, AVFrame *frame)
Definition: decode.c:1684
AVRational time_base_out
The timebase used for the timestamps of the output packets.
Definition: avcodec.h:5748
static int compat_decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, const AVPacket *pkt)
Definition: decode.c:775
AVPacket * in_pkt
Definition: internal.h:120
This side data should be associated with a video stream and corresponds to the AVSphericalMapping str...
Definition: avcodec.h:1339
int av_bsf_send_packet(AVBSFContext *ctx, AVPacket *pkt)
Submit a packet for filtering.
Definition: bsf.c:185
AVFormatContext * ctx
Definition: movenc.c:48
enum AVColorPrimaries color_primaries
Chromaticity coordinates of the source primaries.
Definition: avcodec.h:2142
AVFrameSideDataType
Definition: frame.h:48
uint16_t format
Definition: avcodec.h:3876
#define s(width, name)
Definition: cbs_vp9.c:257
#define FF_DEBUG_BUFFERS
Definition: avcodec.h:2635
int(* frame_params)(AVCodecContext *avctx, AVBufferRef *hw_frames_ctx)
Fill the given hw_frames context with current codec parameters.
Definition: avcodec.h:3750
int64_t reordered_opaque
opaque 64-bit number (generally a PTS) that will be reordered and output in AVFrame.reordered_opaque
Definition: avcodec.h:2682
#define AV_EF_EXPLODE
abort decoding on minor error detection
Definition: avcodec.h:2668
int n
Definition: avisynth_c.h:684
static int av_bprint_is_complete(const AVBPrint *buf)
Test if the print buffer is complete (not truncated).
Definition: bprint.h:185
const char * bsfs
Decoding only, a comma-separated list of bitstream filters to apply to packets before decoding...
Definition: avcodec.h:3555
DecodeSimpleContext ds
Definition: internal.h:165
char * sub_charenc
DTS of the last frame.
Definition: avcodec.h:3102
static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:1568
int draining
checks API usage: after codec draining, flush is required to resume operation
Definition: internal.h:195
#define FF_ARRAY_ELEMS(a)
int thread_count
thread count is used to decide how many independent tasks should be passed to execute() ...
Definition: avcodec.h:2784
int linesize[4]
Definition: internal.h:113
int sub_charenc_mode
Subtitles character encoding mode.
Definition: avcodec.h:3110
void avcodec_flush_buffers(AVCodecContext *avctx)
Reset the internal decoder state / flush internal buffers.
Definition: decode.c:1985
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames...
Definition: frame.h:291
Content light level (based on CTA-861.3).
Definition: avcodec.h:1346
int attribute_align_arg avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt)
Supply raw packet data as input to a decoder.
Definition: decode.c:681
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:251
int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
The default callback for AVCodecContext.get_buffer2().
Definition: decode.c:1660
int av_image_fill_pointers(uint8_t *data[4], enum AVPixelFormat pix_fmt, int height, uint8_t *ptr, const int linesizes[4])
Fill plane data pointers for an image with pixel format pix_fmt and height height.
Definition: imgutils.c:111
Libavcodec external API header.
enum AVMediaType codec_type
Definition: avcodec.h:1540
int compat_decode_warned
Definition: internal.h:206
int64_t pkt_duration
duration of the corresponding packet, expressed in AVStream->time_base units, 0 if unknown...
Definition: frame.h:498
A list of zero terminated key/value strings.
Definition: avcodec.h:1283
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
This side data contains a 3x3 transformation matrix describing an affine transformation that needs to...
Definition: frame.h:84
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
Definition: avutil.h:260
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
Definition: frame.c:592
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_WB24 unsigned int_TMPL AV_WB16 unsigned int_TMPL byte
Definition: bytestream.h:87
int sample_rate
samples per second
Definition: avcodec.h:2188
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:249
int debug
debug
Definition: avcodec.h:2613
static AVRational av_make_q(int num, int den)
Create an AVRational.
Definition: rational.h:71
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
const AVCodecHWConfig * avcodec_get_hw_config(const AVCodec *codec, int index)
Retrieve supported hardware configurations for a codec.
Definition: utils.c:1756
main external API structure.
Definition: avcodec.h:1532
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:592
int skip_samples_multiplier
Definition: internal.h:217
uint8_t * data
The data buffer.
Definition: buffer.h:89
uint8_t pi<< 24) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_U8,(uint64_t)((*(constuint8_t *) pi-0x80U))<< 56) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S16,(uint64_t)(*(constint16_t *) pi)<< 48) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S32,(uint64_t)(*(constint32_t *) pi)<< 32) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S64,(*(constint64_t *) pi >>56)+0x80) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S64,*(constint64_t *) pi *(1.0f/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S64,*(constint64_t *) pi *(1.0/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_FLT, llrintf(*(constfloat *) pi *(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_DBL, llrint(*(constdouble *) pi *(INT64_C(1)<< 63)))#defineFMT_PAIR_FUNC(out, in) staticconv_func_type *constfmt_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),};staticvoidcpy1(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, len);}staticvoidcpy2(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, 2 *len);}staticvoidcpy4(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, 4 *len);}staticvoidcpy8(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, 8 *len);}AudioConvert *swri_audio_convert_alloc(enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, constint *ch_map, intflags){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) returnNULL;ctx=av_mallocz(sizeof(*ctx));if(!ctx) returnNULL;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)){case1:ctx->simd_f=cpy1;break;case2:ctx->simd_f=cpy2;break;case4:ctx->simd_f=cpy4;break;case8:ctx->simd_f=cpy8;break;}}if(HAVE_X86ASM &&1) swri_audio_convert_init_x86(ctx, out_fmt, in_fmt, channels);if(ARCH_ARM) swri_audio_convert_init_arm(ctx, out_fmt, in_fmt, channels);if(ARCH_AARCH64) swri_audio_convert_init_aarch64(ctx, out_fmt, in_fmt, channels);returnctx;}voidswri_audio_convert_free(AudioConvert **ctx){av_freep(ctx);}intswri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, intlen){intch;intoff=0;constintos=(out->planar?1:out->ch_count)*out->bps;unsignedmisaligned=0;av_assert0(ctx->channels==out->ch_count);if(ctx->in_simd_align_mask){intplanes=in->planar?in->ch_count:1;unsignedm=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){intplanes=out->planar?out->ch_count:1;unsignedm=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){intplanes=out->planar?out->ch_count:1;for(ch=0;ch< planes;ch++){ctx->simd_f(out-> ch const uint8_t **in ch off *out planar
Definition: audioconvert.c:56
void avsubtitle_free(AVSubtitle *sub)
Free all allocated data in the given subtitle struct.
Definition: utils.c:1050
AVRational sample_aspect_ratio
Sample aspect ratio for the video frame, 0/1 if unknown/unspecified.
Definition: frame.h:306
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: decode.c:1922
uint8_t * data
Definition: frame.h:182
#define AV_CODEC_PROP_BITMAP_SUB
Subtitle codec is bitmap based Decoded AVSubtitle data can be read from the AVSubtitleRect->pict fiel...
Definition: avcodec.h:766
int av_samples_copy(uint8_t **dst, uint8_t *const *src, int dst_offset, int src_offset, int nb_samples, int nb_channels, enum AVSampleFormat sample_fmt)
Copy samples from src to dst.
Definition: samplefmt.c:213
void * buf
Definition: avisynth_c.h:690
size_t crop_right
Definition: frame.h:580
AVBufferRef * av_buffer_allocz(int size)
Same as av_buffer_alloc(), except the returned buffer will be initialized to zero.
Definition: buffer.c:83
#define AVERROR_BUG
Internal bug, also see AVERROR_BUG2.
Definition: error.h:50
int coded_height
Definition: avcodec.h:1720
int64_t reordered_opaque
reordered opaque 64 bits (generally an integer or a double precision float PTS but can be anything)...
Definition: frame.h:386
int sample_rate
Sample rate of the audio data.
Definition: frame.h:391
enum AVPixelFormat(* get_format)(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
callback to negotiate the pixelFormat
Definition: avcodec.h:1784
Definition: f_ebur128.c:91
int av_image_fill_linesizes(int linesizes[4], enum AVPixelFormat pix_fmt, int width)
Fill plane linesizes for an image with pixel format pix_fmt and width width.
Definition: imgutils.c:89
AVFrameSideData * av_frame_new_side_data(AVFrame *frame, enum AVFrameSideDataType type, int size)
Add a new side data to a frame.
Definition: frame.c:720
const char * av_hwdevice_get_type_name(enum AVHWDeviceType type)
Get the string name of an AVHWDeviceType.
Definition: hwcontext.c:88
#define AV_CODEC_CAP_SUBFRAMES
Codec can output multiple frames per AVPacket Normally demuxers return one frame at a time...
Definition: avcodec.h:1010
void av_buffer_pool_uninit(AVBufferPool **ppool)
Mark the pool as being available for freeing.
Definition: buffer.c:275
int av_samples_get_buffer_size(int *linesize, int nb_channels, int nb_samples, enum AVSampleFormat sample_fmt, int align)
Get the required buffer size for the given audio parameters.
Definition: samplefmt.c:119
enum AVColorSpace colorspace
YUV colorspace type.
Definition: avcodec.h:2156
Rational number (pair of numerator and denominator).
Definition: rational.h:58
enum AVColorTransferCharacteristic color_trc
Color Transfer Characteristic.
Definition: avcodec.h:2149
int avcodec_parameters_from_context(AVCodecParameters *par, const AVCodecContext *codec)
Fill the parameters struct based on the values from the supplied codec context.
Definition: utils.c:2030
Recommmends skipping the specified number of samples.
Definition: avcodec.h:1267
This struct describes a set or pool of "hardware" frames (i.e.
Definition: hwcontext.h:123
int sub_text_format
Control the form of AVSubtitle.rects[N]->ass.
Definition: avcodec.h:3219
int buffer_pkt_valid
Definition: internal.h:201
int skip_samples
Number of audio samples to skip at the start of the next decoded frame.
Definition: internal.h:185
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:2343
#define STRIDE_ALIGN
Definition: internal.h:97
enum AVChromaLocation chroma_location
Definition: frame.h:476
int64_t best_effort_timestamp
frame timestamp estimated using various heuristics, in stream time base
Definition: frame.h:483
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:2359
int size
Size of data in bytes.
Definition: buffer.h:93
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
Definition: frame.c:551
static int64_t pts
#define SIZE_SPECIFIER
Definition: internal.h:262
This side data should be associated with an audio stream and contains ReplayGain information in form ...
Definition: avcodec.h:1210
#define FF_CODEC_CAP_SETS_PKT_DTS
Decoders marked with FF_CODEC_CAP_SETS_PKT_DTS want to set AVFrame.pkt_dts manually.
Definition: internal.h:55
int ff_decode_get_hw_frames_ctx(AVCodecContext *avctx, enum AVHWDeviceType dev_type)
Make sure avctx.hw_frames_ctx is set.
Definition: decode.c:1181
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:232
static void decode_data_free(void *opaque, uint8_t *data)
Definition: decode.c:1827
#define UTF8_MAX_BYTES
Definition: decode.c:878
attribute_deprecated int64_t pkt_pts
PTS copied from the AVPacket that was decoded to produce this frame.
Definition: frame.h:319
void av_bprint_clear(AVBPrint *buf)
Reset the string to "" but keep internal allocated data.
Definition: bprint.c:227
char * av_strtok(char *s, const char *delim, char **saveptr)
Split the string into several tokens which can be accessed by successive calls to av_strtok()...
Definition: avstring.c:184
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
Definition: rational.h:159
AVPacket * buffer_pkt
buffers for using new encode/decode API through legacy API
Definition: internal.h:200
int64_t pkt_dts
DTS copied from the AVPacket that triggered returning this frame.
Definition: frame.h:327
A reference to a data buffer.
Definition: buffer.h:81
int extra_hw_frames
Definition: avcodec.h:3314
static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
Definition: decode.c:139
AVPacketSideData * side_data
Additional packet data that can be provided by the container.
Definition: avcodec.h:1455
This struct stores per-frame lavc-internal data and is attached to it via private_ref.
Definition: decode.h:34
int avcodec_get_hw_frames_parameters(AVCodecContext *avctx, AVBufferRef *device_ref, enum AVPixelFormat hw_pix_fmt, AVBufferRef **out_frames_ref)
Create and return a AVHWFramesContext with values adequate for hardware decoding. ...
Definition: decode.c:1232
static const struct @284 planes[]
static enum AVPixelFormat hw_pix_fmt
Definition: hw_decode.c:46
#define AV_PKT_FLAG_DISCARD
Flag is used to discard packets which are required to maintain valid decoder state but are not requir...
Definition: avcodec.h:1483
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:84
common internal api header.
common internal and external API header
if(ret< 0)
Definition: vf_mcdeint.c:279
AVBufferPool * av_buffer_pool_init(int size, AVBufferRef *(*alloc)(int size))
Allocate and initialize a buffer pool.
Definition: buffer.c:238
#define AV_HWACCEL_CODEC_CAP_EXPERIMENTAL
HWAccel is experimental and is thus avoided in favor of non experimental codecs.
Definition: avcodec.h:3757
#define AV_CODEC_CAP_PARAM_CHANGE
Codec supports changed parameters at any point.
Definition: avcodec.h:1031
int(* uninit)(AVCodecContext *avctx)
Uninitialize the hwaccel private data.
Definition: avcodec.h:3729
AVBufferRef * av_hwframe_ctx_alloc(AVBufferRef *device_ref_in)
Allocate an AVHWFramesContext tied to a given device context.
Definition: hwcontext.c:243
static void insert_ts(AVBPrint *buf, int ts)
Definition: decode.c:957
void * hwaccel_priv_data
hwaccel-specific private data
Definition: internal.h:190
int caps_internal
Internal codec capabilities.
Definition: avcodec.h:3549
int den
Denominator.
Definition: rational.h:60
int av_image_check_size2(unsigned int w, unsigned int h, int64_t max_pixels, enum AVPixelFormat pix_fmt, int log_offset, void *log_ctx)
Check if the given dimension of an image is valid, meaning that all bytes of a plane of an image with...
Definition: imgutils.c:253
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
Definition: avcodec.h:781
Apply the maximum possible cropping, even if it requires setting the AVFrame.data[] entries to unalig...
Definition: frame.h:863
AVBSFContext ** bsfs
Definition: internal.h:125
static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
Definition: decode.c:1613
Formatted text, the ass field must be set by the decoder and is authoritative.
Definition: avcodec.h:3835
#define FF_PSEUDOPAL
Definition: internal.h:367
AVHWDeviceType
Definition: hwcontext.h:27
void ff_thread_flush(AVCodecContext *avctx)
Wait for decoding threads to finish and reset internal state.
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:85
The codec supports this format via the hw_frames_ctx interface.
Definition: avcodec.h:3378
int channels
number of audio channels
Definition: avcodec.h:2189
struct AVCodecInternal * internal
Private context used for internal data.
Definition: avcodec.h:1567
char * ass
0 terminated ASS/SSA compatible event line.
Definition: avcodec.h:3870
#define AV_FRAME_FLAG_DISCARD
A flag to mark the frames which need to be decoded, but shouldn't be output.
Definition: frame.h:448
int flags2
AV_CODEC_FLAG2_*.
Definition: avcodec.h:1619
enum AVColorPrimaries color_primaries
Definition: frame.h:465
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Definition: avcodec.h:1443
AVRational av_mul_q(AVRational b, AVRational c)
Multiply two rationals.
Definition: rational.c:80
int64_t pts_correction_last_dts
PTS of the last frame.
Definition: avcodec.h:3095
size_t compat_decode_partial_size
Definition: internal.h:212
#define AV_CODEC_FLAG_TRUNCATED
Input bitstream might be truncated at a random location instead of only at frame boundaries.
Definition: avcodec.h:878
int frame_number
Frame counter, set by libavcodec.
Definition: avcodec.h:2219
static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:1466
int height
Definition: frame.h:276
void av_bsf_flush(AVBSFContext *ctx)
Reset the internal bitstream filter state / flush internal buffers.
Definition: bsf.c:175
#define av_freep(p)
int64_t pts_correction_num_faulty_pts
Current statistics for PTS correction.
Definition: avcodec.h:3092
enum AVColorTransferCharacteristic color_trc
Definition: frame.h:467
AVBufferRef * av_buffer_pool_get(AVBufferPool *pool)
Allocate a new AVBuffer, reusing an old buffer from the pool when available.
Definition: buffer.c:334
Recommmends skipping the specified number of samples.
Definition: frame.h:108
void * hwaccel_priv
Per-frame private data for hwaccels.
Definition: decode.h:52
#define av_malloc_array(a, b)
enum AVHWDeviceType device_type
The device type associated with the configuration.
Definition: avcodec.h:3413
#define FF_SUB_TEXT_FMT_ASS_WITH_TIMINGS
Definition: avcodec.h:3222
#define FF_SUB_CHARENC_MODE_IGNORE
neither convert the subtitles, nor check them for valid UTF-8
Definition: avcodec.h:3114
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:2322
ReplayGain information in the form of the AVReplayGain struct.
Definition: frame.h:76
enum AVSubtitleType type
Definition: avcodec.h:3861
uint8_t ** extended_data
pointers to the data planes/channels.
Definition: frame.h:265
int format
Definition: internal.h:110
AVBufferRef * hw_device_ctx
A reference to the AVHWDeviceContext describing the device which will be used by a hardware encoder/d...
Definition: avcodec.h:3264
int pkt_size
size of the corresponding packet containing the compressed frame.
Definition: frame.h:532
float min
Stereoscopic 3d metadata.
Definition: frame.h:63
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:87
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
The codec supports this format via the hw_device_ctx interface.
Definition: avcodec.h:3369
This structure stores compressed data.
Definition: avcodec.h:1421
AVCodecParameters * par_in
Parameters of the input stream.
Definition: avcodec.h:5730
#define AV_GET_BUFFER_FLAG_REF
The decoder will keep a reference to the frame and may reuse it later.
Definition: avcodec.h:1143
int nb_samples
number of audio samples (per channel) described by this frame
Definition: frame.h:284
int strict_std_compliance
strictly follow the standard (MPEG-4, ...).
Definition: avcodec.h:2591
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:967
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1437
enum AVPixelFormat sw_pix_fmt
Nominal unaccelerated pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:3062
for(j=16;j >0;--j)
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:652
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
static void hwaccel_uninit(AVCodecContext *avctx)
Definition: decode.c:1318
#define tb
Definition: regdef.h:68
#define AV_WL32(p, v)
Definition: intreadwrite.h:426
uint8_t pi<< 24) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_U8,(uint64_t)((*(constuint8_t *) pi-0x80U))<< 56) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S16,(uint64_t)(*(constint16_t *) pi)<< 48) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S32,(uint64_t)(*(constint32_t *) pi)<< 32) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S64,(*(constint64_t *) pi >>56)+0x80) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S64,*(constint64_t *) pi *(1.0f/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S64,*(constint64_t *) pi *(1.0/(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_FLT, llrintf(*(constfloat *) pi *(INT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_DBL, llrint(*(constdouble *) pi *(INT64_C(1)<< 63)))#defineFMT_PAIR_FUNC(out, in) staticconv_func_type *constfmt_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),};staticvoidcpy1(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, len);}staticvoidcpy2(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, 2 *len);}staticvoidcpy4(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, 4 *len);}staticvoidcpy8(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, 8 *len);}AudioConvert *swri_audio_convert_alloc(enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, constint *ch_map, intflags){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) returnNULL;ctx=av_mallocz(sizeof(*ctx));if(!ctx) returnNULL;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)){case1:ctx->simd_f=cpy1;break;case2:ctx->simd_f=cpy2;break;case4:ctx->simd_f=cpy4;break;case8:ctx->simd_f=cpy8;break;}}if(HAVE_X86ASM &&1) swri_audio_convert_init_x86(ctx, out_fmt, in_fmt, channels);if(ARCH_ARM) swri_audio_convert_init_arm(ctx, out_fmt, in_fmt, channels);if(ARCH_AARCH64) swri_audio_convert_init_aarch64(ctx, out_fmt, in_fmt, channels);returnctx;}voidswri_audio_convert_free(AudioConvert **ctx){av_freep(ctx);}intswri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, intlen){intch;intoff=0;constintos=(out->planar?1:out->ch_count)*out->bps;unsignedmisaligned=0;av_assert0(ctx->channels==out->ch_count);if(ctx->in_simd_align_mask){intplanes=in->planar?in->ch_count:1;unsignedm=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){intplanes=out->planar?out->ch_count:1;unsignedm=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){intplanes=out->planar?out->ch_count:1;for(ch=0;ch< planes;ch++){ctx->simd_f(out-> ch ch
Definition: audioconvert.c:56
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.c:191
This side data should be associated with an audio stream and corresponds to enum AVAudioServiceType.
Definition: avcodec.h:1231
static uint8_t tmp[11]
Definition: aes_ctr.c:26
int(* receive_frame)(AVCodecContext *avctx, AVFrame *frame)
Decode API with decoupled packet/frame dataflow.
Definition: avcodec.h:3539