FFmpeg  4.4
decode.c
Go to the documentation of this file.
1 /*
2  * generic decoding-related code
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include <stdint.h>
22 #include <string.h>
23 
24 #include "config.h"
25 
26 #if CONFIG_ICONV
27 # include <iconv.h>
28 #endif
29 
30 #include "libavutil/avassert.h"
31 #include "libavutil/avstring.h"
32 #include "libavutil/bprint.h"
33 #include "libavutil/common.h"
34 #include "libavutil/frame.h"
35 #include "libavutil/hwcontext.h"
36 #include "libavutil/imgutils.h"
37 #include "libavutil/internal.h"
38 #include "libavutil/intmath.h"
39 #include "libavutil/opt.h"
40 
41 #include "avcodec.h"
42 #include "bytestream.h"
43 #include "decode.h"
44 #include "hwconfig.h"
45 #include "internal.h"
46 #include "thread.h"
47 
48 typedef struct FramePool {
49  /**
50  * Pools for each data plane. For audio all the planes have the same size,
51  * so only pools[0] is used.
52  */
54 
55  /*
56  * Pool parameters
57  */
58  int format;
59  int width, height;
61  int linesize[4];
62  int planes;
63  int channels;
64  int samples;
65 } FramePool;
66 
67 static int apply_param_change(AVCodecContext *avctx, const AVPacket *avpkt)
68 {
69  int ret;
71  const uint8_t *data;
72  uint32_t flags;
73  int64_t val;
74 
76  if (!data)
77  return 0;
78 
79  if (!(avctx->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE)) {
80  av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
81  "changes, but PARAM_CHANGE side data was sent to it.\n");
82  ret = AVERROR(EINVAL);
83  goto fail2;
84  }
85 
86  if (size < 4)
87  goto fail;
88 
89  flags = bytestream_get_le32(&data);
90  size -= 4;
91 
93  if (size < 4)
94  goto fail;
95  val = bytestream_get_le32(&data);
96  if (val <= 0 || val > INT_MAX) {
97  av_log(avctx, AV_LOG_ERROR, "Invalid channel count");
98  ret = AVERROR_INVALIDDATA;
99  goto fail2;
100  }
101  avctx->channels = val;
102  size -= 4;
103  }
105  if (size < 8)
106  goto fail;
107  avctx->channel_layout = bytestream_get_le64(&data);
108  size -= 8;
109  }
111  if (size < 4)
112  goto fail;
113  val = bytestream_get_le32(&data);
114  if (val <= 0 || val > INT_MAX) {
115  av_log(avctx, AV_LOG_ERROR, "Invalid sample rate");
116  ret = AVERROR_INVALIDDATA;
117  goto fail2;
118  }
119  avctx->sample_rate = val;
120  size -= 4;
121  }
123  if (size < 8)
124  goto fail;
125  avctx->width = bytestream_get_le32(&data);
126  avctx->height = bytestream_get_le32(&data);
127  size -= 8;
128  ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
129  if (ret < 0)
130  goto fail2;
131  }
132 
133  return 0;
134 fail:
135  av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
136  ret = AVERROR_INVALIDDATA;
137 fail2:
138  if (ret < 0) {
139  av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
140  if (avctx->err_recognition & AV_EF_EXPLODE)
141  return ret;
142  }
143  return 0;
144 }
145 
146 #define IS_EMPTY(pkt) (!(pkt)->data)
147 
148 static int copy_packet_props(AVPacket *dst, const AVPacket *src)
149 {
150  int ret = av_packet_copy_props(dst, src);
151  if (ret < 0)
152  return ret;
153 
154  dst->size = src->size; // HACK: Needed for ff_decode_frame_props().
155  dst->data = (void*)1; // HACK: Needed for IS_EMPTY().
156 
157  return 0;
158 }
159 
161 {
162  AVPacket tmp = { 0 };
163  int ret = 0;
164 
165  if (IS_EMPTY(avci->last_pkt_props)) {
166  if (av_fifo_size(avci->pkt_props) >= sizeof(*pkt)) {
168  sizeof(*avci->last_pkt_props), NULL);
169  } else
170  return copy_packet_props(avci->last_pkt_props, pkt);
171  }
172 
173  if (av_fifo_space(avci->pkt_props) < sizeof(*pkt)) {
174  ret = av_fifo_grow(avci->pkt_props, sizeof(*pkt));
175  if (ret < 0)
176  return ret;
177  }
178 
179  ret = copy_packet_props(&tmp, pkt);
180  if (ret < 0)
181  return ret;
182 
183  av_fifo_generic_write(avci->pkt_props, &tmp, sizeof(tmp), NULL);
184 
185  return 0;
186 }
187 
189 {
190  AVCodecInternal *avci = avctx->internal;
191  int ret;
192 
193  if (avci->bsf)
194  return 0;
195 
196  ret = av_bsf_list_parse_str(avctx->codec->bsfs, &avci->bsf);
197  if (ret < 0) {
198  av_log(avctx, AV_LOG_ERROR, "Error parsing decoder bitstream filters '%s': %s\n", avctx->codec->bsfs, av_err2str(ret));
199  if (ret != AVERROR(ENOMEM))
200  ret = AVERROR_BUG;
201  goto fail;
202  }
203 
204  /* We do not currently have an API for passing the input timebase into decoders,
205  * but no filters used here should actually need it.
206  * So we make up some plausible-looking number (the MPEG 90kHz timebase) */
207  avci->bsf->time_base_in = (AVRational){ 1, 90000 };
208  ret = avcodec_parameters_from_context(avci->bsf->par_in, avctx);
209  if (ret < 0)
210  goto fail;
211 
212  ret = av_bsf_init(avci->bsf);
213  if (ret < 0)
214  goto fail;
215 
216  return 0;
217 fail:
218  av_bsf_free(&avci->bsf);
219  return ret;
220 }
221 
223 {
224  AVCodecInternal *avci = avctx->internal;
225  int ret;
226 
227  if (avci->draining)
228  return AVERROR_EOF;
229 
230  ret = av_bsf_receive_packet(avci->bsf, pkt);
231  if (ret == AVERROR_EOF)
232  avci->draining = 1;
233  if (ret < 0)
234  return ret;
235 
236  ret = extract_packet_props(avctx->internal, pkt);
237  if (ret < 0)
238  goto finish;
239 
240  ret = apply_param_change(avctx, pkt);
241  if (ret < 0)
242  goto finish;
243 
244 #if FF_API_OLD_ENCDEC
245  if (avctx->codec->receive_frame)
246  avci->compat_decode_consumed += pkt->size;
247 #endif
248 
249  return 0;
250 finish:
252  return ret;
253 }
254 
255 /**
256  * Attempt to guess proper monotonic timestamps for decoded video frames
257  * which might have incorrect times. Input timestamps may wrap around, in
258  * which case the output will as well.
259  *
260  * @param pts the pts field of the decoded AVPacket, as passed through
261  * AVFrame.pts
262  * @param dts the dts field of the decoded AVPacket
263  * @return one of the input values, may be AV_NOPTS_VALUE
264  */
266  int64_t reordered_pts, int64_t dts)
267 {
268  int64_t pts = AV_NOPTS_VALUE;
269 
270  if (dts != AV_NOPTS_VALUE) {
271  ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
272  ctx->pts_correction_last_dts = dts;
273  } else if (reordered_pts != AV_NOPTS_VALUE)
274  ctx->pts_correction_last_dts = reordered_pts;
275 
276  if (reordered_pts != AV_NOPTS_VALUE) {
277  ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
278  ctx->pts_correction_last_pts = reordered_pts;
279  } else if(dts != AV_NOPTS_VALUE)
280  ctx->pts_correction_last_pts = dts;
281 
282  if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
283  && reordered_pts != AV_NOPTS_VALUE)
284  pts = reordered_pts;
285  else
286  pts = dts;
287 
288  return pts;
289 }
290 
291 /*
292  * The core of the receive_frame_wrapper for the decoders implementing
293  * the simple API. Certain decoders might consume partial packets without
294  * returning any output, so this function needs to be called in a loop until it
295  * returns EAGAIN.
296  **/
297 static inline int decode_simple_internal(AVCodecContext *avctx, AVFrame *frame, int64_t *discarded_samples)
298 {
299  AVCodecInternal *avci = avctx->internal;
300  DecodeSimpleContext *ds = &avci->ds;
301  AVPacket *pkt = ds->in_pkt;
302  int got_frame, actual_got_frame;
303  int ret;
304 
305  if (!pkt->data && !avci->draining) {
307  ret = ff_decode_get_packet(avctx, pkt);
308  if (ret < 0 && ret != AVERROR_EOF)
309  return ret;
310  }
311 
312  // Some codecs (at least wma lossless) will crash when feeding drain packets
313  // after EOF was signaled.
314  if (avci->draining_done)
315  return AVERROR_EOF;
316 
317  if (!pkt->data &&
318  !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY ||
320  return AVERROR_EOF;
321 
322  got_frame = 0;
323 
325  ret = ff_thread_decode_frame(avctx, frame, &got_frame, pkt);
326  } else {
327  ret = avctx->codec->decode(avctx, frame, &got_frame, pkt);
328 
330  frame->pkt_dts = pkt->dts;
331  if (avctx->codec->type == AVMEDIA_TYPE_VIDEO) {
332  if(!avctx->has_b_frames)
333  frame->pkt_pos = pkt->pos;
334  //FIXME these should be under if(!avctx->has_b_frames)
335  /* get_buffer is supposed to set frame parameters */
336  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DR1)) {
338  if (!frame->width) frame->width = avctx->width;
339  if (!frame->height) frame->height = avctx->height;
340  if (frame->format == AV_PIX_FMT_NONE) frame->format = avctx->pix_fmt;
341  }
342  }
343  }
344  emms_c();
345  actual_got_frame = got_frame;
346 
347  if (avctx->codec->type == AVMEDIA_TYPE_VIDEO) {
349  got_frame = 0;
350  } else if (avctx->codec->type == AVMEDIA_TYPE_AUDIO) {
351  uint8_t *side;
352  buffer_size_t side_size;
353  uint32_t discard_padding = 0;
354  uint8_t skip_reason = 0;
355  uint8_t discard_reason = 0;
356 
357  if (ret >= 0 && got_frame) {
359  frame->format = avctx->sample_fmt;
360  if (!frame->channel_layout)
362  if (!frame->channels)
363  frame->channels = avctx->channels;
364  if (!frame->sample_rate)
365  frame->sample_rate = avctx->sample_rate;
366  }
367 
369  if(side && side_size>=10) {
370  avci->skip_samples = AV_RL32(side) * avci->skip_samples_multiplier;
371  discard_padding = AV_RL32(side + 4);
372  av_log(avctx, AV_LOG_DEBUG, "skip %d / discard %d samples due to side data\n",
373  avci->skip_samples, (int)discard_padding);
374  skip_reason = AV_RL8(side + 8);
375  discard_reason = AV_RL8(side + 9);
376  }
377 
378  if ((frame->flags & AV_FRAME_FLAG_DISCARD) && got_frame &&
379  !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
380  avci->skip_samples = FFMAX(0, avci->skip_samples - frame->nb_samples);
381  got_frame = 0;
382  *discarded_samples += frame->nb_samples;
383  }
384 
385  if (avci->skip_samples > 0 && got_frame &&
386  !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
387  if(frame->nb_samples <= avci->skip_samples){
388  got_frame = 0;
389  *discarded_samples += frame->nb_samples;
390  avci->skip_samples -= frame->nb_samples;
391  av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
392  avci->skip_samples);
393  } else {
395  frame->nb_samples - avci->skip_samples, avctx->channels, frame->format);
396  if(avctx->pkt_timebase.num && avctx->sample_rate) {
397  int64_t diff_ts = av_rescale_q(avci->skip_samples,
398  (AVRational){1, avctx->sample_rate},
399  avctx->pkt_timebase);
400  if(frame->pts!=AV_NOPTS_VALUE)
401  frame->pts += diff_ts;
402 #if FF_API_PKT_PTS
405  frame->pkt_pts += diff_ts;
407 #endif
409  frame->pkt_dts += diff_ts;
410  if (frame->pkt_duration >= diff_ts)
411  frame->pkt_duration -= diff_ts;
412  } else {
413  av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
414  }
415  av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
416  avci->skip_samples, frame->nb_samples);
417  *discarded_samples += avci->skip_samples;
418  frame->nb_samples -= avci->skip_samples;
419  avci->skip_samples = 0;
420  }
421  }
422 
423  if (discard_padding > 0 && discard_padding <= frame->nb_samples && got_frame &&
424  !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
425  if (discard_padding == frame->nb_samples) {
426  *discarded_samples += frame->nb_samples;
427  got_frame = 0;
428  } else {
429  if(avctx->pkt_timebase.num && avctx->sample_rate) {
430  int64_t diff_ts = av_rescale_q(frame->nb_samples - discard_padding,
431  (AVRational){1, avctx->sample_rate},
432  avctx->pkt_timebase);
433  frame->pkt_duration = diff_ts;
434  } else {
435  av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for discarded samples.\n");
436  }
437  av_log(avctx, AV_LOG_DEBUG, "discard %d/%d samples\n",
438  (int)discard_padding, frame->nb_samples);
439  frame->nb_samples -= discard_padding;
440  }
441  }
442 
443  if ((avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL) && got_frame) {
445  if (fside) {
446  AV_WL32(fside->data, avci->skip_samples);
447  AV_WL32(fside->data + 4, discard_padding);
448  AV_WL8(fside->data + 8, skip_reason);
449  AV_WL8(fside->data + 9, discard_reason);
450  avci->skip_samples = 0;
451  }
452  }
453  }
454 
455  if (avctx->codec->type == AVMEDIA_TYPE_AUDIO &&
457  ret >= 0 && ret != pkt->size && !(avctx->codec->capabilities & AV_CODEC_CAP_SUBFRAMES)) {
458  av_log(avctx, AV_LOG_WARNING, "Multiple frames in a packet.\n");
459  avci->showed_multi_packet_warning = 1;
460  }
461 
462  if (!got_frame)
464 
465  if (ret >= 0 && avctx->codec->type == AVMEDIA_TYPE_VIDEO && !(avctx->flags & AV_CODEC_FLAG_TRUNCATED))
466  ret = pkt->size;
467 
468 #if FF_API_AVCTX_TIMEBASE
469  if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
470  avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
471 #endif
472 
473  /* do not stop draining when actual_got_frame != 0 or ret < 0 */
474  /* got_frame == 0 but actual_got_frame != 0 when frame is discarded */
475  if (avci->draining && !actual_got_frame) {
476  if (ret < 0) {
477  /* prevent infinite loop if a decoder wrongly always return error on draining */
478  /* reasonable nb_errors_max = maximum b frames + thread count */
479  int nb_errors_max = 20 + (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME ?
480  avctx->thread_count : 1);
481 
482  if (avci->nb_draining_errors++ >= nb_errors_max) {
483  av_log(avctx, AV_LOG_ERROR, "Too many errors when draining, this is a bug. "
484  "Stop draining and force EOF.\n");
485  avci->draining_done = 1;
486  ret = AVERROR_BUG;
487  }
488  } else {
489  avci->draining_done = 1;
490  }
491  }
492 
493 #if FF_API_OLD_ENCDEC
494  avci->compat_decode_consumed += ret;
495 #endif
496 
497  if (ret >= pkt->size || ret < 0) {
500  } else {
501  int consumed = ret;
502 
503  pkt->data += consumed;
504  pkt->size -= consumed;
505  avci->last_pkt_props->size -= consumed; // See extract_packet_props() comment.
510  }
511 
512  if (got_frame)
513  av_assert0(frame->buf[0]);
514 
515  return ret < 0 ? ret : 0;
516 }
517 
519 {
520  int ret;
521  int64_t discarded_samples = 0;
522 
523  while (!frame->buf[0]) {
524  if (discarded_samples > avctx->max_samples)
525  return AVERROR(EAGAIN);
526  ret = decode_simple_internal(avctx, frame, &discarded_samples);
527  if (ret < 0)
528  return ret;
529  }
530 
531  return 0;
532 }
533 
535 {
536  AVCodecInternal *avci = avctx->internal;
537  int ret;
538 
539  av_assert0(!frame->buf[0]);
540 
541  if (avctx->codec->receive_frame) {
542  ret = avctx->codec->receive_frame(avctx, frame);
543  if (ret != AVERROR(EAGAIN))
545  } else
546  ret = decode_simple_receive_frame(avctx, frame);
547 
548  if (ret == AVERROR_EOF)
549  avci->draining_done = 1;
550 
551  if (!ret) {
553  frame->pts,
554  frame->pkt_dts);
555 
556  /* the only case where decode data is not set should be decoders
557  * that do not call ff_get_buffer() */
559  !(avctx->codec->capabilities & AV_CODEC_CAP_DR1));
560 
561  if (frame->private_ref) {
563 
564  if (fdd->post_process) {
565  ret = fdd->post_process(avctx, frame);
566  if (ret < 0) {
568  return ret;
569  }
570  }
571  }
572  }
573 
574  /* free the per-frame decode data */
576 
577  return ret;
578 }
579 
581 {
582  AVCodecInternal *avci = avctx->internal;
583  int ret;
584 
585  if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
586  return AVERROR(EINVAL);
587 
588  if (avctx->internal->draining)
589  return AVERROR_EOF;
590 
591  if (avpkt && !avpkt->size && avpkt->data)
592  return AVERROR(EINVAL);
593 
595  if (avpkt && (avpkt->data || avpkt->side_data_elems)) {
596  ret = av_packet_ref(avci->buffer_pkt, avpkt);
597  if (ret < 0)
598  return ret;
599  }
600 
601  ret = av_bsf_send_packet(avci->bsf, avci->buffer_pkt);
602  if (ret < 0) {
604  return ret;
605  }
606 
607  if (!avci->buffer_frame->buf[0]) {
608  ret = decode_receive_frame_internal(avctx, avci->buffer_frame);
609  if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
610  return ret;
611  }
612 
613  return 0;
614 }
615 
617 {
618  /* make sure we are noisy about decoders returning invalid cropping data */
619  if (frame->crop_left >= INT_MAX - frame->crop_right ||
620  frame->crop_top >= INT_MAX - frame->crop_bottom ||
623  av_log(avctx, AV_LOG_WARNING,
624  "Invalid cropping information set by a decoder: "
626  "(frame size %dx%d). This is a bug, please report it\n",
628  frame->width, frame->height);
629  frame->crop_left = 0;
630  frame->crop_right = 0;
631  frame->crop_top = 0;
632  frame->crop_bottom = 0;
633  return 0;
634  }
635 
636  if (!avctx->apply_cropping)
637  return 0;
638 
641 }
642 
644 {
645  AVCodecInternal *avci = avctx->internal;
646  int ret, changed;
647 
649 
650  if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
651  return AVERROR(EINVAL);
652 
653  if (avci->buffer_frame->buf[0]) {
655  } else {
656  ret = decode_receive_frame_internal(avctx, frame);
657  if (ret < 0)
658  return ret;
659  }
660 
661  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
662  ret = apply_cropping(avctx, frame);
663  if (ret < 0) {
665  return ret;
666  }
667  }
668 
669  avctx->frame_number++;
670 
671  if (avctx->flags & AV_CODEC_FLAG_DROPCHANGED) {
672 
673  if (avctx->frame_number == 1) {
674  avci->initial_format = frame->format;
675  switch(avctx->codec_type) {
676  case AVMEDIA_TYPE_VIDEO:
677  avci->initial_width = frame->width;
678  avci->initial_height = frame->height;
679  break;
680  case AVMEDIA_TYPE_AUDIO:
682  avctx->sample_rate;
685  break;
686  }
687  }
688 
689  if (avctx->frame_number > 1) {
690  changed = avci->initial_format != frame->format;
691 
692  switch(avctx->codec_type) {
693  case AVMEDIA_TYPE_VIDEO:
694  changed |= avci->initial_width != frame->width ||
695  avci->initial_height != frame->height;
696  break;
697  case AVMEDIA_TYPE_AUDIO:
698  changed |= avci->initial_sample_rate != frame->sample_rate ||
699  avci->initial_sample_rate != avctx->sample_rate ||
700  avci->initial_channels != frame->channels ||
702  break;
703  }
704 
705  if (changed) {
706  avci->changed_frames_dropped++;
707  av_log(avctx, AV_LOG_INFO, "dropped changed frame #%d pts %"PRId64
708  " drop count: %d \n",
709  avctx->frame_number, frame->pts,
710  avci->changed_frames_dropped);
712  return AVERROR_INPUT_CHANGED;
713  }
714  }
715  }
716  return 0;
717 }
718 
719 #if FF_API_OLD_ENCDEC
722 {
723  int ret;
724 
725  /* move the original frame to our backup */
726  av_frame_unref(avci->to_free);
728 
729  /* now copy everything except the AVBufferRefs back
730  * note that we make a COPY of the side data, so calling av_frame_free() on
731  * the caller's frame will work properly */
732  ret = av_frame_copy_props(frame, avci->to_free);
733  if (ret < 0)
734  return ret;
735 
736  memcpy(frame->data, avci->to_free->data, sizeof(frame->data));
737  memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize));
738  if (avci->to_free->extended_data != avci->to_free->data) {
739  int planes = avci->to_free->channels;
740  int size = planes * sizeof(*frame->extended_data);
741 
742  if (!size) {
744  return AVERROR_BUG;
745  }
746 
748  if (!frame->extended_data) {
750  return AVERROR(ENOMEM);
751  }
752  memcpy(frame->extended_data, avci->to_free->extended_data,
753  size);
754  } else
756 
757  frame->format = avci->to_free->format;
758  frame->width = avci->to_free->width;
759  frame->height = avci->to_free->height;
762  frame->channels = avci->to_free->channels;
763 
764  return 0;
765 }
766 
768  int *got_frame, const AVPacket *pkt)
769 {
770  AVCodecInternal *avci = avctx->internal;
771  int ret = 0;
772 
774 
775  if (avci->draining_done && pkt && pkt->size != 0) {
776  av_log(avctx, AV_LOG_WARNING, "Got unexpected packet after EOF\n");
777  avcodec_flush_buffers(avctx);
778  }
779 
780  *got_frame = 0;
781 
782  if (avci->compat_decode_partial_size > 0 &&
783  avci->compat_decode_partial_size != pkt->size) {
784  av_log(avctx, AV_LOG_ERROR,
785  "Got unexpected packet size after a partial decode\n");
786  ret = AVERROR(EINVAL);
787  goto finish;
788  }
789 
790  if (!avci->compat_decode_partial_size) {
791  ret = avcodec_send_packet(avctx, pkt);
792  if (ret == AVERROR_EOF)
793  ret = 0;
794  else if (ret == AVERROR(EAGAIN)) {
795  /* we fully drain all the output in each decode call, so this should not
796  * ever happen */
797  ret = AVERROR_BUG;
798  goto finish;
799  } else if (ret < 0)
800  goto finish;
801  }
802 
803  while (ret >= 0) {
804  ret = avcodec_receive_frame(avctx, frame);
805  if (ret < 0) {
806  if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
807  ret = 0;
808  goto finish;
809  }
810 
811  if (frame != avci->compat_decode_frame) {
812  if (!avctx->refcounted_frames) {
813  ret = unrefcount_frame(avci, frame);
814  if (ret < 0)
815  goto finish;
816  }
817 
818  *got_frame = 1;
819  frame = avci->compat_decode_frame;
820  } else {
821  if (!avci->compat_decode_warned) {
822  av_log(avctx, AV_LOG_WARNING, "The deprecated avcodec_decode_* "
823  "API cannot return all the frames for this decoder. "
824  "Some frames will be dropped. Update your code to the "
825  "new decoding API to fix this.\n");
826  avci->compat_decode_warned = 1;
827  }
828  }
829 
830  if (avci->draining || (!avctx->codec->bsfs && avci->compat_decode_consumed < pkt->size))
831  break;
832  }
833 
834 finish:
835  if (ret == 0) {
836  /* if there are any bsfs then assume full packet is always consumed */
837  if (avctx->codec->bsfs)
838  ret = pkt->size;
839  else
840  ret = FFMIN(avci->compat_decode_consumed, pkt->size);
841  }
842  avci->compat_decode_consumed = 0;
843  avci->compat_decode_partial_size = (ret >= 0) ? pkt->size - ret : 0;
844 
845  return ret;
846 }
847 
849  int *got_picture_ptr,
850  const AVPacket *avpkt)
851 {
852  return compat_decode(avctx, picture, got_picture_ptr, avpkt);
853 }
854 
856  AVFrame *frame,
857  int *got_frame_ptr,
858  const AVPacket *avpkt)
859 {
860  return compat_decode(avctx, frame, got_frame_ptr, avpkt);
861 }
863 #endif
864 
866 {
867  memset(sub, 0, sizeof(*sub));
868  sub->pts = AV_NOPTS_VALUE;
869 }
870 
871 #define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
872 static int recode_subtitle(AVCodecContext *avctx, AVPacket **outpkt,
873  AVPacket *inpkt, AVPacket *buf_pkt)
874 {
875 #if CONFIG_ICONV
876  iconv_t cd = (iconv_t)-1;
877  int ret = 0;
878  char *inb, *outb;
879  size_t inl, outl;
880 #endif
881 
882  if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER || inpkt->size == 0) {
883  *outpkt = inpkt;
884  return 0;
885  }
886 
887 #if CONFIG_ICONV
888  inb = inpkt->data;
889  inl = inpkt->size;
890 
891  if (inl >= INT_MAX / UTF8_MAX_BYTES - AV_INPUT_BUFFER_PADDING_SIZE) {
892  av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n");
893  return AVERROR(ERANGE);
894  }
895 
896  cd = iconv_open("UTF-8", avctx->sub_charenc);
897  av_assert0(cd != (iconv_t)-1);
898 
899  ret = av_new_packet(buf_pkt, inl * UTF8_MAX_BYTES);
900  if (ret < 0)
901  goto end;
902  ret = av_packet_copy_props(buf_pkt, inpkt);
903  if (ret < 0)
904  goto end;
905  outb = buf_pkt->data;
906  outl = buf_pkt->size;
907 
908  if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
909  iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
910  outl >= buf_pkt->size || inl != 0) {
911  ret = FFMIN(AVERROR(errno), -1);
912  av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
913  "from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
914  goto end;
915  }
916  buf_pkt->size -= outl;
917  memset(buf_pkt->data + buf_pkt->size, 0, outl);
918  *outpkt = buf_pkt;
919 
920  ret = 0;
921 end:
922  if (ret < 0)
923  av_packet_unref(buf_pkt);
924  if (cd != (iconv_t)-1)
925  iconv_close(cd);
926  return ret;
927 #else
928  av_log(avctx, AV_LOG_ERROR, "requesting subtitles recoding without iconv");
929  return AVERROR(EINVAL);
930 #endif
931 }
932 
933 static int utf8_check(const uint8_t *str)
934 {
935  const uint8_t *byte;
936  uint32_t codepoint, min;
937 
938  while (*str) {
939  byte = str;
940  GET_UTF8(codepoint, *(byte++), return 0;);
941  min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
942  1 << (5 * (byte - str) - 4);
943  if (codepoint < min || codepoint >= 0x110000 ||
944  codepoint == 0xFFFE /* BOM */ ||
945  codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
946  return 0;
947  str = byte;
948  }
949  return 1;
950 }
951 
952 #if FF_API_ASS_TIMING
953 static void insert_ts(AVBPrint *buf, int ts)
954 {
955  if (ts == -1) {
956  av_bprintf(buf, "9:59:59.99,");
957  } else {
958  int h, m, s;
959 
960  h = ts/360000; ts -= 360000*h;
961  m = ts/ 6000; ts -= 6000*m;
962  s = ts/ 100; ts -= 100*s;
963  av_bprintf(buf, "%d:%02d:%02d.%02d,", h, m, s, ts);
964  }
965 }
966 
968 {
969  int i;
970  AVBPrint buf;
971 
973 
974  for (i = 0; i < sub->num_rects; i++) {
975  char *final_dialog;
976  const char *dialog;
977  AVSubtitleRect *rect = sub->rects[i];
978  int ts_start, ts_duration = -1;
979  long int layer;
980 
981  if (rect->type != SUBTITLE_ASS || !strncmp(rect->ass, "Dialogue: ", 10))
982  continue;
983 
984  av_bprint_clear(&buf);
985 
986  /* skip ReadOrder */
987  dialog = strchr(rect->ass, ',');
988  if (!dialog)
989  continue;
990  dialog++;
991 
992  /* extract Layer or Marked */
993  layer = strtol(dialog, (char**)&dialog, 10);
994  if (*dialog != ',')
995  continue;
996  dialog++;
997 
998  /* rescale timing to ASS time base (ms) */
999  ts_start = av_rescale_q(pkt->pts, tb, av_make_q(1, 100));
1000  if (pkt->duration != -1)
1001  ts_duration = av_rescale_q(pkt->duration, tb, av_make_q(1, 100));
1002  sub->end_display_time = FFMAX(sub->end_display_time, 10 * ts_duration);
1003 
1004  /* construct ASS (standalone file form with timestamps) string */
1005  av_bprintf(&buf, "Dialogue: %ld,", layer);
1006  insert_ts(&buf, ts_start);
1007  insert_ts(&buf, ts_duration == -1 ? -1 : ts_start + ts_duration);
1008  av_bprintf(&buf, "%s\r\n", dialog);
1009 
1010  final_dialog = av_strdup(buf.str);
1011  if (!av_bprint_is_complete(&buf) || !final_dialog) {
1012  av_freep(&final_dialog);
1013  av_bprint_finalize(&buf, NULL);
1014  return AVERROR(ENOMEM);
1015  }
1016  av_freep(&rect->ass);
1017  rect->ass = final_dialog;
1018  }
1019 
1020  av_bprint_finalize(&buf, NULL);
1021  return 0;
1022 }
1023 #endif
1024 
1026  int *got_sub_ptr,
1027  AVPacket *avpkt)
1028 {
1029  int ret = 0;
1030 
1031  if (!avpkt->data && avpkt->size) {
1032  av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
1033  return AVERROR(EINVAL);
1034  }
1035  if (!avctx->codec)
1036  return AVERROR(EINVAL);
1037  if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
1038  av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
1039  return AVERROR(EINVAL);
1040  }
1041 
1042  *got_sub_ptr = 0;
1044 
1045  if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size) {
1046  AVCodecInternal *avci = avctx->internal;
1047  AVPacket *pkt;
1048 
1049  ret = recode_subtitle(avctx, &pkt, avpkt, avci->buffer_pkt);
1050  if (ret < 0)
1051  return ret;
1052 
1053  if (avctx->pkt_timebase.num && avpkt->pts != AV_NOPTS_VALUE)
1054  sub->pts = av_rescale_q(avpkt->pts,
1055  avctx->pkt_timebase, AV_TIME_BASE_Q);
1056  ret = avctx->codec->decode(avctx, sub, got_sub_ptr, pkt);
1057  av_assert1((ret >= 0) >= !!*got_sub_ptr &&
1058  !!*got_sub_ptr >= !!sub->num_rects);
1059 
1060 #if FF_API_ASS_TIMING
1062  && *got_sub_ptr && sub->num_rects) {
1063  const AVRational tb = avctx->pkt_timebase.num ? avctx->pkt_timebase
1064  : avctx->time_base;
1065  int err = convert_sub_to_old_ass_form(sub, avpkt, tb);
1066  if (err < 0)
1067  ret = err;
1068  }
1069 #endif
1070 
1071  if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
1072  avctx->pkt_timebase.num) {
1073  AVRational ms = { 1, 1000 };
1074  sub->end_display_time = av_rescale_q(avpkt->duration,
1075  avctx->pkt_timebase, ms);
1076  }
1077 
1079  sub->format = 0;
1080  else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB)
1081  sub->format = 1;
1082 
1083  for (unsigned i = 0; i < sub->num_rects; i++) {
1085  sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
1086  av_log(avctx, AV_LOG_ERROR,
1087  "Invalid UTF-8 in decoded subtitles text; "
1088  "maybe missing -sub_charenc option\n");
1090  ret = AVERROR_INVALIDDATA;
1091  break;
1092  }
1093  }
1094 
1095  if (*got_sub_ptr)
1096  avctx->frame_number++;
1097 
1098  if (pkt == avci->buffer_pkt) // did we recode?
1099  av_packet_unref(avci->buffer_pkt);
1100  }
1101 
1102  return ret;
1103 }
1104 
1106  const enum AVPixelFormat *fmt)
1107 {
1108  const AVPixFmtDescriptor *desc;
1109  const AVCodecHWConfig *config;
1110  int i, n;
1111 
1112  // If a device was supplied when the codec was opened, assume that the
1113  // user wants to use it.
1114  if (avctx->hw_device_ctx && avctx->codec->hw_configs) {
1115  AVHWDeviceContext *device_ctx =
1117  for (i = 0;; i++) {
1118  config = &avctx->codec->hw_configs[i]->public;
1119  if (!config)
1120  break;
1121  if (!(config->methods &
1123  continue;
1124  if (device_ctx->type != config->device_type)
1125  continue;
1126  for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++) {
1127  if (config->pix_fmt == fmt[n])
1128  return fmt[n];
1129  }
1130  }
1131  }
1132  // No device or other setup, so we have to choose from things which
1133  // don't any other external information.
1134 
1135  // If the last element of the list is a software format, choose it
1136  // (this should be best software format if any exist).
1137  for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++);
1138  desc = av_pix_fmt_desc_get(fmt[n - 1]);
1139  if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
1140  return fmt[n - 1];
1141 
1142  // Finally, traverse the list in order and choose the first entry
1143  // with no external dependencies (if there is no hardware configuration
1144  // information available then this just picks the first entry).
1145  for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++) {
1146  for (i = 0;; i++) {
1147  config = avcodec_get_hw_config(avctx->codec, i);
1148  if (!config)
1149  break;
1150  if (config->pix_fmt == fmt[n])
1151  break;
1152  }
1153  if (!config) {
1154  // No specific config available, so the decoder must be able
1155  // to handle this format without any additional setup.
1156  return fmt[n];
1157  }
1159  // Usable with only internal setup.
1160  return fmt[n];
1161  }
1162  }
1163 
1164  // Nothing is usable, give up.
1165  return AV_PIX_FMT_NONE;
1166 }
1167 
1169  enum AVHWDeviceType dev_type)
1170 {
1171  AVHWDeviceContext *device_ctx;
1172  AVHWFramesContext *frames_ctx;
1173  int ret;
1174 
1175  if (!avctx->hwaccel)
1176  return AVERROR(ENOSYS);
1177 
1178  if (avctx->hw_frames_ctx)
1179  return 0;
1180  if (!avctx->hw_device_ctx) {
1181  av_log(avctx, AV_LOG_ERROR, "A hardware frames or device context is "
1182  "required for hardware accelerated decoding.\n");
1183  return AVERROR(EINVAL);
1184  }
1185 
1186  device_ctx = (AVHWDeviceContext *)avctx->hw_device_ctx->data;
1187  if (device_ctx->type != dev_type) {
1188  av_log(avctx, AV_LOG_ERROR, "Device type %s expected for hardware "
1189  "decoding, but got %s.\n", av_hwdevice_get_type_name(dev_type),
1190  av_hwdevice_get_type_name(device_ctx->type));
1191  return AVERROR(EINVAL);
1192  }
1193 
1195  avctx->hw_device_ctx,
1196  avctx->hwaccel->pix_fmt,
1197  &avctx->hw_frames_ctx);
1198  if (ret < 0)
1199  return ret;
1200 
1201  frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
1202 
1203 
1204  if (frames_ctx->initial_pool_size) {
1205  // We guarantee 4 base work surfaces. The function above guarantees 1
1206  // (the absolute minimum), so add the missing count.
1207  frames_ctx->initial_pool_size += 3;
1208  }
1209 
1210  ret = av_hwframe_ctx_init(avctx->hw_frames_ctx);
1211  if (ret < 0) {
1212  av_buffer_unref(&avctx->hw_frames_ctx);
1213  return ret;
1214  }
1215 
1216  return 0;
1217 }
1218 
1220  AVBufferRef *device_ref,
1222  AVBufferRef **out_frames_ref)
1223 {
1224  AVBufferRef *frames_ref = NULL;
1225  const AVCodecHWConfigInternal *hw_config;
1226  const AVHWAccel *hwa;
1227  int i, ret;
1228 
1229  for (i = 0;; i++) {
1230  hw_config = avctx->codec->hw_configs[i];
1231  if (!hw_config)
1232  return AVERROR(ENOENT);
1233  if (hw_config->public.pix_fmt == hw_pix_fmt)
1234  break;
1235  }
1236 
1237  hwa = hw_config->hwaccel;
1238  if (!hwa || !hwa->frame_params)
1239  return AVERROR(ENOENT);
1240 
1241  frames_ref = av_hwframe_ctx_alloc(device_ref);
1242  if (!frames_ref)
1243  return AVERROR(ENOMEM);
1244 
1245  ret = hwa->frame_params(avctx, frames_ref);
1246  if (ret >= 0) {
1247  AVHWFramesContext *frames_ctx = (AVHWFramesContext*)frames_ref->data;
1248 
1249  if (frames_ctx->initial_pool_size) {
1250  // If the user has requested that extra output surfaces be
1251  // available then add them here.
1252  if (avctx->extra_hw_frames > 0)
1253  frames_ctx->initial_pool_size += avctx->extra_hw_frames;
1254 
1255  // If frame threading is enabled then an extra surface per thread
1256  // is also required.
1257  if (avctx->active_thread_type & FF_THREAD_FRAME)
1258  frames_ctx->initial_pool_size += avctx->thread_count;
1259  }
1260 
1261  *out_frames_ref = frames_ref;
1262  } else {
1263  av_buffer_unref(&frames_ref);
1264  }
1265  return ret;
1266 }
1267 
1268 static int hwaccel_init(AVCodecContext *avctx,
1269  const AVCodecHWConfigInternal *hw_config)
1270 {
1271  const AVHWAccel *hwaccel;
1272  int err;
1273 
1274  hwaccel = hw_config->hwaccel;
1277  av_log(avctx, AV_LOG_WARNING, "Ignoring experimental hwaccel: %s\n",
1278  hwaccel->name);
1279  return AVERROR_PATCHWELCOME;
1280  }
1281 
1282  if (hwaccel->priv_data_size) {
1283  avctx->internal->hwaccel_priv_data =
1284  av_mallocz(hwaccel->priv_data_size);
1285  if (!avctx->internal->hwaccel_priv_data)
1286  return AVERROR(ENOMEM);
1287  }
1288 
1289  avctx->hwaccel = hwaccel;
1290  if (hwaccel->init) {
1291  err = hwaccel->init(avctx);
1292  if (err < 0) {
1293  av_log(avctx, AV_LOG_ERROR, "Failed setup for format %s: "
1294  "hwaccel initialisation returned error.\n",
1295  av_get_pix_fmt_name(hw_config->public.pix_fmt));
1297  avctx->hwaccel = NULL;
1298  return err;
1299  }
1300  }
1301 
1302  return 0;
1303 }
1304 
1305 static void hwaccel_uninit(AVCodecContext *avctx)
1306 {
1307  if (avctx->hwaccel && avctx->hwaccel->uninit)
1308  avctx->hwaccel->uninit(avctx);
1309 
1311 
1312  avctx->hwaccel = NULL;
1313 
1314  av_buffer_unref(&avctx->hw_frames_ctx);
1315 }
1316 
1317 int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
1318 {
1319  const AVPixFmtDescriptor *desc;
1320  enum AVPixelFormat *choices;
1321  enum AVPixelFormat ret, user_choice;
1322  const AVCodecHWConfigInternal *hw_config;
1323  const AVCodecHWConfig *config;
1324  int i, n, err;
1325 
1326  // Find end of list.
1327  for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++);
1328  // Must contain at least one entry.
1329  av_assert0(n >= 1);
1330  // If a software format is available, it must be the last entry.
1331  desc = av_pix_fmt_desc_get(fmt[n - 1]);
1332  if (desc->flags & AV_PIX_FMT_FLAG_HWACCEL) {
1333  // No software format is available.
1334  } else {
1335  avctx->sw_pix_fmt = fmt[n - 1];
1336  }
1337 
1338  choices = av_malloc_array(n + 1, sizeof(*choices));
1339  if (!choices)
1340  return AV_PIX_FMT_NONE;
1341 
1342  memcpy(choices, fmt, (n + 1) * sizeof(*choices));
1343 
1344  for (;;) {
1345  // Remove the previous hwaccel, if there was one.
1346  hwaccel_uninit(avctx);
1347 
1348  user_choice = avctx->get_format(avctx, choices);
1349  if (user_choice == AV_PIX_FMT_NONE) {
1350  // Explicitly chose nothing, give up.
1351  ret = AV_PIX_FMT_NONE;
1352  break;
1353  }
1354 
1355  desc = av_pix_fmt_desc_get(user_choice);
1356  if (!desc) {
1357  av_log(avctx, AV_LOG_ERROR, "Invalid format returned by "
1358  "get_format() callback.\n");
1359  ret = AV_PIX_FMT_NONE;
1360  break;
1361  }
1362  av_log(avctx, AV_LOG_DEBUG, "Format %s chosen by get_format().\n",
1363  desc->name);
1364 
1365  for (i = 0; i < n; i++) {
1366  if (choices[i] == user_choice)
1367  break;
1368  }
1369  if (i == n) {
1370  av_log(avctx, AV_LOG_ERROR, "Invalid return from get_format(): "
1371  "%s not in possible list.\n", desc->name);
1372  ret = AV_PIX_FMT_NONE;
1373  break;
1374  }
1375 
1376  if (avctx->codec->hw_configs) {
1377  for (i = 0;; i++) {
1378  hw_config = avctx->codec->hw_configs[i];
1379  if (!hw_config)
1380  break;
1381  if (hw_config->public.pix_fmt == user_choice)
1382  break;
1383  }
1384  } else {
1385  hw_config = NULL;
1386  }
1387 
1388  if (!hw_config) {
1389  // No config available, so no extra setup required.
1390  ret = user_choice;
1391  break;
1392  }
1393  config = &hw_config->public;
1394 
1395  if (config->methods &
1397  avctx->hw_frames_ctx) {
1398  const AVHWFramesContext *frames_ctx =
1400  if (frames_ctx->format != user_choice) {
1401  av_log(avctx, AV_LOG_ERROR, "Invalid setup for format %s: "
1402  "does not match the format of the provided frames "
1403  "context.\n", desc->name);
1404  goto try_again;
1405  }
1406  } else if (config->methods &
1408  avctx->hw_device_ctx) {
1409  const AVHWDeviceContext *device_ctx =
1411  if (device_ctx->type != config->device_type) {
1412  av_log(avctx, AV_LOG_ERROR, "Invalid setup for format %s: "
1413  "does not match the type of the provided device "
1414  "context.\n", desc->name);
1415  goto try_again;
1416  }
1417  } else if (config->methods &
1419  // Internal-only setup, no additional configuration.
1420  } else if (config->methods &
1422  // Some ad-hoc configuration we can't see and can't check.
1423  } else {
1424  av_log(avctx, AV_LOG_ERROR, "Invalid setup for format %s: "
1425  "missing configuration.\n", desc->name);
1426  goto try_again;
1427  }
1428  if (hw_config->hwaccel) {
1429  av_log(avctx, AV_LOG_DEBUG, "Format %s requires hwaccel "
1430  "initialisation.\n", desc->name);
1431  err = hwaccel_init(avctx, hw_config);
1432  if (err < 0)
1433  goto try_again;
1434  }
1435  ret = user_choice;
1436  break;
1437 
1438  try_again:
1439  av_log(avctx, AV_LOG_DEBUG, "Format %s not usable, retrying "
1440  "get_format() without it.\n", desc->name);
1441  for (i = 0; i < n; i++) {
1442  if (choices[i] == user_choice)
1443  break;
1444  }
1445  for (; i + 1 < n; i++)
1446  choices[i] = choices[i + 1];
1447  --n;
1448  }
1449 
1450  av_freep(&choices);
1451  return ret;
1452 }
1453 
1454 static void frame_pool_free(void *opaque, uint8_t *data)
1455 {
1456  FramePool *pool = (FramePool*)data;
1457  int i;
1458 
1459  for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
1460  av_buffer_pool_uninit(&pool->pools[i]);
1461 
1462  av_freep(&data);
1463 }
1464 
1466 {
1467  FramePool *pool = av_mallocz(sizeof(*pool));
1468  AVBufferRef *buf;
1469 
1470  if (!pool)
1471  return NULL;
1472 
1473  buf = av_buffer_create((uint8_t*)pool, sizeof(*pool),
1474  frame_pool_free, NULL, 0);
1475  if (!buf) {
1476  av_freep(&pool);
1477  return NULL;
1478  }
1479 
1480  return buf;
1481 }
1482 
1484 {
1485  FramePool *pool = avctx->internal->pool ?
1486  (FramePool*)avctx->internal->pool->data : NULL;
1487  AVBufferRef *pool_buf;
1488  int i, ret, ch, planes;
1489 
1490  if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
1492  ch = frame->channels;
1493  planes = planar ? ch : 1;
1494  }
1495 
1496  if (pool && pool->format == frame->format) {
1497  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO &&
1498  pool->width == frame->width && pool->height == frame->height)
1499  return 0;
1500  if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && pool->planes == planes &&
1501  pool->channels == ch && frame->nb_samples == pool->samples)
1502  return 0;
1503  }
1504 
1505  pool_buf = frame_pool_alloc();
1506  if (!pool_buf)
1507  return AVERROR(ENOMEM);
1508  pool = (FramePool*)pool_buf->data;
1509 
1510  switch (avctx->codec_type) {
1511  case AVMEDIA_TYPE_VIDEO: {
1512  int linesize[4];
1513  int w = frame->width;
1514  int h = frame->height;
1515  int unaligned;
1516  ptrdiff_t linesize1[4];
1517  size_t size[4];
1518 
1519  avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
1520 
1521  do {
1522  // NOTE: do not align linesizes individually, this breaks e.g. assumptions
1523  // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
1524  ret = av_image_fill_linesizes(linesize, avctx->pix_fmt, w);
1525  if (ret < 0)
1526  goto fail;
1527  // increase alignment of w for next try (rhs gives the lowest bit set in w)
1528  w += w & ~(w - 1);
1529 
1530  unaligned = 0;
1531  for (i = 0; i < 4; i++)
1532  unaligned |= linesize[i] % pool->stride_align[i];
1533  } while (unaligned);
1534 
1535  for (i = 0; i < 4; i++)
1536  linesize1[i] = linesize[i];
1537  ret = av_image_fill_plane_sizes(size, avctx->pix_fmt, h, linesize1);
1538  if (ret < 0)
1539  goto fail;
1540 
1541  for (i = 0; i < 4; i++) {
1542  pool->linesize[i] = linesize[i];
1543  if (size[i]) {
1544  if (size[i] > INT_MAX - (16 + STRIDE_ALIGN - 1)) {
1545  ret = AVERROR(EINVAL);
1546  goto fail;
1547  }
1548  pool->pools[i] = av_buffer_pool_init(size[i] + 16 + STRIDE_ALIGN - 1,
1550  NULL :
1552  if (!pool->pools[i]) {
1553  ret = AVERROR(ENOMEM);
1554  goto fail;
1555  }
1556  }
1557  }
1558  pool->format = frame->format;
1559  pool->width = frame->width;
1560  pool->height = frame->height;
1561 
1562  break;
1563  }
1564  case AVMEDIA_TYPE_AUDIO: {
1565  ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
1566  frame->nb_samples, frame->format, 0);
1567  if (ret < 0)
1568  goto fail;
1569 
1570  pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
1571  if (!pool->pools[0]) {
1572  ret = AVERROR(ENOMEM);
1573  goto fail;
1574  }
1575 
1576  pool->format = frame->format;
1577  pool->planes = planes;
1578  pool->channels = ch;
1579  pool->samples = frame->nb_samples;
1580  break;
1581  }
1582  default: av_assert0(0);
1583  }
1584 
1585  av_buffer_unref(&avctx->internal->pool);
1586  avctx->internal->pool = pool_buf;
1587 
1588  return 0;
1589 fail:
1590  av_buffer_unref(&pool_buf);
1591  return ret;
1592 }
1593 
1595 {
1596  FramePool *pool = (FramePool*)avctx->internal->pool->data;
1597  int planes = pool->planes;
1598  int i;
1599 
1600  frame->linesize[0] = pool->linesize[0];
1601 
1606  sizeof(*frame->extended_buf));
1607  if (!frame->extended_data || !frame->extended_buf) {
1610  return AVERROR(ENOMEM);
1611  }
1612  } else {
1615  }
1616 
1617  for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
1618  frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
1619  if (!frame->buf[i])
1620  goto fail;
1621  frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
1622  }
1623  for (i = 0; i < frame->nb_extended_buf; i++) {
1625  if (!frame->extended_buf[i])
1626  goto fail;
1628  }
1629 
1630  if (avctx->debug & FF_DEBUG_BUFFERS)
1631  av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
1632 
1633  return 0;
1634 fail:
1636  return AVERROR(ENOMEM);
1637 }
1638 
1640 {
1641  FramePool *pool = (FramePool*)s->internal->pool->data;
1643  int i;
1644 
1645  if (pic->data[0] || pic->data[1] || pic->data[2] || pic->data[3]) {
1646  av_log(s, AV_LOG_ERROR, "pic->data[*]!=NULL in avcodec_default_get_buffer\n");
1647  return -1;
1648  }
1649 
1650  if (!desc) {
1652  "Unable to get pixel format descriptor for format %s\n",
1653  av_get_pix_fmt_name(pic->format));
1654  return AVERROR(EINVAL);
1655  }
1656 
1657  memset(pic->data, 0, sizeof(pic->data));
1658  pic->extended_data = pic->data;
1659 
1660  for (i = 0; i < 4 && pool->pools[i]; i++) {
1661  pic->linesize[i] = pool->linesize[i];
1662 
1663  pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
1664  if (!pic->buf[i])
1665  goto fail;
1666 
1667  pic->data[i] = pic->buf[i]->data;
1668  }
1669  for (; i < AV_NUM_DATA_POINTERS; i++) {
1670  pic->data[i] = NULL;
1671  pic->linesize[i] = 0;
1672  }
1673  if (desc->flags & AV_PIX_FMT_FLAG_PAL ||
1674  ((desc->flags & FF_PSEUDOPAL) && pic->data[1]))
1675  avpriv_set_systematic_pal2((uint32_t *)pic->data[1], pic->format);
1676 
1677  if (s->debug & FF_DEBUG_BUFFERS)
1678  av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
1679 
1680  return 0;
1681 fail:
1682  av_frame_unref(pic);
1683  return AVERROR(ENOMEM);
1684 }
1685 
1687 {
1688  int ret;
1689 
1690  if (avctx->hw_frames_ctx) {
1691  ret = av_hwframe_get_buffer(avctx->hw_frames_ctx, frame, 0);
1692  frame->width = avctx->coded_width;
1693  frame->height = avctx->coded_height;
1694  return ret;
1695  }
1696 
1697  if ((ret = update_frame_pool(avctx, frame)) < 0)
1698  return ret;
1699 
1700  switch (avctx->codec_type) {
1701  case AVMEDIA_TYPE_VIDEO:
1702  return video_get_buffer(avctx, frame);
1703  case AVMEDIA_TYPE_AUDIO:
1704  return audio_get_buffer(avctx, frame);
1705  default:
1706  return -1;
1707  }
1708 }
1709 
1711 {
1713  const uint8_t *side_metadata;
1714 
1715  AVDictionary **frame_md = &frame->metadata;
1716 
1717  side_metadata = av_packet_get_side_data(avpkt,
1719  return av_packet_unpack_dictionary(side_metadata, size, frame_md);
1720 }
1721 
1723 {
1724  AVPacket *pkt = avctx->internal->last_pkt_props;
1725  static const struct {
1726  enum AVPacketSideDataType packet;
1728  } sd[] = {
1739  };
1740 
1741  if (IS_EMPTY(pkt) && av_fifo_size(avctx->internal->pkt_props) >= sizeof(*pkt))
1743  pkt, sizeof(*pkt), NULL);
1744 
1745  frame->pts = pkt->pts;
1746 #if FF_API_PKT_PTS
1748  frame->pkt_pts = pkt->pts;
1750 #endif
1751  frame->pkt_pos = pkt->pos;
1753  frame->pkt_size = pkt->size;
1754 
1755  for (int i = 0; i < FF_ARRAY_ELEMS(sd); i++) {
1757  uint8_t *packet_sd = av_packet_get_side_data(pkt, sd[i].packet, &size);
1758  if (packet_sd) {
1760  sd[i].frame,
1761  size);
1762  if (!frame_sd)
1763  return AVERROR(ENOMEM);
1764 
1765  memcpy(frame_sd->data, packet_sd, size);
1766  }
1767  }
1769 
1770  if (pkt->flags & AV_PKT_FLAG_DISCARD) {
1772  } else {
1774  }
1776 
1780  frame->color_trc = avctx->color_trc;
1782  frame->colorspace = avctx->colorspace;
1784  frame->color_range = avctx->color_range;
1787 
1788  switch (avctx->codec->type) {
1789  case AVMEDIA_TYPE_VIDEO:
1790  frame->format = avctx->pix_fmt;
1793 
1794  if (frame->width && frame->height &&
1796  frame->sample_aspect_ratio) < 0) {
1797  av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
1800  frame->sample_aspect_ratio = (AVRational){ 0, 1 };
1801  }
1802 
1803  break;
1804  case AVMEDIA_TYPE_AUDIO:
1805  if (!frame->sample_rate)
1806  frame->sample_rate = avctx->sample_rate;
1807  if (frame->format < 0)
1808  frame->format = avctx->sample_fmt;
1809  if (!frame->channel_layout) {
1810  if (avctx->channel_layout) {
1812  avctx->channels) {
1813  av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
1814  "configuration.\n");
1815  return AVERROR(EINVAL);
1816  }
1817 
1819  } else {
1820  if (avctx->channels > FF_SANE_NB_CHANNELS) {
1821  av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
1822  avctx->channels);
1823  return AVERROR(ENOSYS);
1824  }
1825  }
1826  }
1827  frame->channels = avctx->channels;
1828  break;
1829  }
1830  return 0;
1831 }
1832 
1834 {
1835  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1836  int i;
1837  int num_planes = av_pix_fmt_count_planes(frame->format);
1839  int flags = desc ? desc->flags : 0;
1840  if (num_planes == 1 && (flags & AV_PIX_FMT_FLAG_PAL))
1841  num_planes = 2;
1842  if ((flags & FF_PSEUDOPAL) && frame->data[1])
1843  num_planes = 2;
1844  for (i = 0; i < num_planes; i++) {
1845  av_assert0(frame->data[i]);
1846  }
1847  // For formats without data like hwaccel allow unused pointers to be non-NULL.
1848  for (i = num_planes; num_planes > 0 && i < FF_ARRAY_ELEMS(frame->data); i++) {
1849  if (frame->data[i])
1850  av_log(avctx, AV_LOG_ERROR, "Buffer returned by get_buffer2() did not zero unused plane pointers\n");
1851  frame->data[i] = NULL;
1852  }
1853  }
1854 }
1855 
1856 static void decode_data_free(void *opaque, uint8_t *data)
1857 {
1859 
1860  if (fdd->post_process_opaque_free)
1862 
1863  if (fdd->hwaccel_priv_free)
1864  fdd->hwaccel_priv_free(fdd->hwaccel_priv);
1865 
1866  av_freep(&fdd);
1867 }
1868 
1870 {
1871  AVBufferRef *fdd_buf;
1872  FrameDecodeData *fdd;
1873 
1876 
1877  fdd = av_mallocz(sizeof(*fdd));
1878  if (!fdd)
1879  return AVERROR(ENOMEM);
1880 
1881  fdd_buf = av_buffer_create((uint8_t*)fdd, sizeof(*fdd), decode_data_free,
1883  if (!fdd_buf) {
1884  av_freep(&fdd);
1885  return AVERROR(ENOMEM);
1886  }
1887 
1888  frame->private_ref = fdd_buf;
1889 
1890  return 0;
1891 }
1892 
1894 {
1895  const AVHWAccel *hwaccel = avctx->hwaccel;
1896  int override_dimensions = 1;
1897  int ret;
1898 
1899  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1900  if ((unsigned)avctx->width > INT_MAX - STRIDE_ALIGN ||
1901  (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) {
1902  av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
1903  ret = AVERROR(EINVAL);
1904  goto fail;
1905  }
1906 
1907  if (frame->width <= 0 || frame->height <= 0) {
1908  frame->width = FFMAX(avctx->width, AV_CEIL_RSHIFT(avctx->coded_width, avctx->lowres));
1909  frame->height = FFMAX(avctx->height, AV_CEIL_RSHIFT(avctx->coded_height, avctx->lowres));
1910  override_dimensions = 0;
1911  }
1912 
1913  if (frame->data[0] || frame->data[1] || frame->data[2] || frame->data[3]) {
1914  av_log(avctx, AV_LOG_ERROR, "pic->data[*]!=NULL in get_buffer_internal\n");
1915  ret = AVERROR(EINVAL);
1916  goto fail;
1917  }
1918  } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
1919  if (frame->nb_samples * (int64_t)avctx->channels > avctx->max_samples) {
1920  av_log(avctx, AV_LOG_ERROR, "samples per frame %d, exceeds max_samples %"PRId64"\n", frame->nb_samples, avctx->max_samples);
1921  ret = AVERROR(EINVAL);
1922  goto fail;
1923  }
1924  }
1925  ret = ff_decode_frame_props(avctx, frame);
1926  if (ret < 0)
1927  goto fail;
1928 
1929  if (hwaccel) {
1930  if (hwaccel->alloc_frame) {
1931  ret = hwaccel->alloc_frame(avctx, frame);
1932  goto end;
1933  }
1934  } else
1935  avctx->sw_pix_fmt = avctx->pix_fmt;
1936 
1937  ret = avctx->get_buffer2(avctx, frame, flags);
1938  if (ret < 0)
1939  goto fail;
1940 
1942 
1944  if (ret < 0)
1945  goto fail;
1946 
1947 end:
1948  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions &&
1950  frame->width = avctx->width;
1951  frame->height = avctx->height;
1952  }
1953 
1954 fail:
1955  if (ret < 0) {
1956  av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
1958  }
1959 
1960  return ret;
1961 }
1962 
1964 {
1965  AVFrame *tmp;
1966  int ret;
1967 
1969 
1970  if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
1971  av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
1974  }
1975 
1976  if (!frame->data[0])
1977  return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1978 
1980  return ff_decode_frame_props(avctx, frame);
1981 
1982  tmp = av_frame_alloc();
1983  if (!tmp)
1984  return AVERROR(ENOMEM);
1985 
1987 
1989  if (ret < 0) {
1990  av_frame_free(&tmp);
1991  return ret;
1992  }
1993 
1995  av_frame_free(&tmp);
1996 
1997  return 0;
1998 }
1999 
2001 {
2002  int ret = reget_buffer_internal(avctx, frame, flags);
2003  if (ret < 0)
2004  av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
2005  return ret;
2006 }
2007 
2009 {
2010  int ret = 0;
2011 
2012  /* if the decoder init function was already called previously,
2013  * free the already allocated subtitle_header before overwriting it */
2014  av_freep(&avctx->subtitle_header);
2015 
2016 #if FF_API_THREAD_SAFE_CALLBACKS
2018  if ((avctx->thread_type & FF_THREAD_FRAME) &&
2020  !avctx->thread_safe_callbacks) {
2021  av_log(avctx, AV_LOG_WARNING, "Requested frame threading with a "
2022  "custom get_buffer2() implementation which is not marked as "
2023  "thread safe. This is not supported anymore, make your "
2024  "callback thread-safe.\n");
2025  }
2027 #endif
2028 
2029  if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
2030  av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
2031  avctx->codec->max_lowres);
2032  avctx->lowres = avctx->codec->max_lowres;
2033  }
2034 
2036  avctx->pts_correction_num_faulty_dts = 0;
2037  avctx->pts_correction_last_pts =
2038  avctx->pts_correction_last_dts = INT64_MIN;
2039 
2040  if ( !CONFIG_GRAY && avctx->flags & AV_CODEC_FLAG_GRAY
2042  av_log(avctx, AV_LOG_WARNING,
2043  "gray decoding requested but not enabled at configuration time\n");
2044  if (avctx->flags2 & AV_CODEC_FLAG2_EXPORT_MVS) {
2046  }
2047 
2048  ret = decode_bsfs_init(avctx);
2049  if (ret < 0)
2050  return ret;
2051 
2052  return 0;
2053 }
static double val(void *priv, double ch)
Definition: aeval.c:76
uint8_t
uint8_t pi<< 24) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_U8,(uint64_t)((*(const uint8_t *) pi - 0x80U))<< 56) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8,(*(const uint8_t *) pi - 0x80) *(1.0f/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8,(*(const uint8_t *) pi - 0x80) *(1.0/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16,(*(const int16_t *) pi >>8)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_S16, *(const int16_t *) pi *(1<< 16)) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S16,(uint64_t)(*(const int16_t *) pi)<< 48) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16, *(const int16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16, *(const int16_t *) pi *(1.0/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32,(*(const int32_t *) pi >>24)+0x80) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_S32,(uint64_t)(*(const int32_t *) pi)<< 32) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32, *(const int32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32, *(const int32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S64,(*(const int64_t *) pi >>56)+0x80) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S64, *(const int64_t *) pi *(1.0f/(UINT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S64, *(const int64_t *) pi *(1.0/(UINT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, av_clip_uint8(lrintf(*(const float *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, av_clip_int16(lrintf(*(const float *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, av_clipl_int32(llrintf(*(const float *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_FLT, llrintf(*(const float *) pi *(UINT64_C(1)<< 63))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, av_clip_uint8(lrint(*(const double *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, av_clip_int16(lrint(*(const double *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, av_clipl_int32(llrint(*(const double *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_S64, int64_t, AV_SAMPLE_FMT_DBL, llrint(*(const double *) pi *(UINT64_C(1)<< 63))) #define FMT_PAIR_FUNC(out, in) static conv_func_type *const fmt_pair_to_conv_functions[AV_SAMPLE_FMT_NB *AV_SAMPLE_FMT_NB]={ FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S64), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S64, AV_SAMPLE_FMT_S64), };static void cpy1(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, len);} static void cpy2(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 2 *len);} static void cpy4(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 4 *len);} static void cpy8(uint8_t **dst, const uint8_t **src, int len){ memcpy(*dst, *src, 8 *len);} AudioConvert *swri_audio_convert_alloc(enum AVSampleFormat out_fmt, enum AVSampleFormat in_fmt, int channels, const int *ch_map, int flags) { AudioConvert *ctx;conv_func_type *f=fmt_pair_to_conv_functions[av_get_packed_sample_fmt(out_fmt)+AV_SAMPLE_FMT_NB *av_get_packed_sample_fmt(in_fmt)];if(!f) return NULL;ctx=av_mallocz(sizeof(*ctx));if(!ctx) return NULL;if(channels==1){ in_fmt=av_get_planar_sample_fmt(in_fmt);out_fmt=av_get_planar_sample_fmt(out_fmt);} ctx->channels=channels;ctx->conv_f=f;ctx->ch_map=ch_map;if(in_fmt==AV_SAMPLE_FMT_U8||in_fmt==AV_SAMPLE_FMT_U8P) memset(ctx->silence, 0x80, sizeof(ctx->silence));if(out_fmt==in_fmt &&!ch_map) { switch(av_get_bytes_per_sample(in_fmt)){ case 1:ctx->simd_f=cpy1;break;case 2:ctx->simd_f=cpy2;break;case 4:ctx->simd_f=cpy4;break;case 8:ctx->simd_f=cpy8;break;} } if(HAVE_X86ASM &&HAVE_MMX) swri_audio_convert_init_x86(ctx, out_fmt, in_fmt, channels);if(ARCH_ARM) swri_audio_convert_init_arm(ctx, out_fmt, in_fmt, channels);if(ARCH_AARCH64) swri_audio_convert_init_aarch64(ctx, out_fmt, in_fmt, channels);return ctx;} void swri_audio_convert_free(AudioConvert **ctx) { av_freep(ctx);} int swri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, int len) { int ch;int off=0;const int os=(out->planar ? 1 :out->ch_count) *out->bps;unsigned misaligned=0;av_assert0(ctx->channels==out->ch_count);if(ctx->in_simd_align_mask) { int planes=in->planar ? in->ch_count :1;unsigned m=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) in->ch[ch];misaligned|=m &ctx->in_simd_align_mask;} if(ctx->out_simd_align_mask) { int planes=out->planar ? out->ch_count :1;unsigned m=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) out->ch[ch];misaligned|=m &ctx->out_simd_align_mask;} if(ctx->simd_f &&!ctx->ch_map &&!misaligned){ off=len &~15;av_assert1(off >=0);av_assert1(off<=len);av_assert2(ctx->channels==SWR_CH_MAX||!in->ch[ctx->channels]);if(off >0){ if(out->planar==in->planar){ int planes=out->planar ? out->ch_count :1;for(ch=0;ch< planes;ch++){ ctx->simd_f(out->ch+ch,(const uint8_t **) in->ch+ch, off *(out-> planar
Definition: audioconvert.c:56
simple assert() macros that are a bit more flexible than ISO C assert().
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
Libavcodec external API header.
#define FF_COMPLIANCE_EXPERIMENTAL
Allow nonstandardized experimental things.
Definition: avcodec.h:1606
#define FF_THREAD_FRAME
Decode more than one frame at once.
Definition: avcodec.h:1784
#define AV_EF_EXPLODE
abort decoding on minor error detection
Definition: avcodec.h:1656
#define FF_SUB_TEXT_FMT_ASS_WITH_TIMINGS
Definition: avcodec.h:2228
#define FF_SUB_CHARENC_MODE_IGNORE
neither convert the subtitles, nor check them for valid UTF-8
Definition: avcodec.h:2121
#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:2120
#define FF_DEBUG_BUFFERS
Definition: avcodec.h:1635
int av_packet_unpack_dictionary(const uint8_t *data, int size, AVDictionary **dict)
Definition: avpacket.c:554
uint8_t * av_packet_get_side_data(const AVPacket *pkt, enum AVPacketSideDataType type, buffer_size_t *size)
Definition: avpacket.c:368
#define AV_RL32
Definition: intreadwrite.h:146
void av_bprintf(AVBPrint *buf, const char *fmt,...)
Definition: bprint.c:94
void av_bprint_init(AVBPrint *buf, unsigned size_init, unsigned size_max)
Definition: bprint.c:69
int av_bprint_finalize(AVBPrint *buf, char **ret_str)
Finalize a print buffer.
Definition: bprint.c:235
void av_bprint_clear(AVBPrint *buf)
Reset the string to "" but keep internal allocated data.
Definition: bprint.c:227
#define AV_BPRINT_SIZE_UNLIMITED
static int av_bprint_is_complete(const AVBPrint *buf)
Test if the print buffer is complete (not truncated).
Definition: bprint.h:185
#define flags(name, subs,...)
Definition: cbs_av1.c:561
#define s(width, name)
Definition: cbs_vp9.c:257
#define fail()
Definition: checkasm.h:133
common internal and external API header
#define FFMIN(a, b)
Definition: common.h:105
#define GET_UTF8(val, GET_BYTE, ERROR)
Convert a UTF-8 character (up to 4 bytes) to its 32-bit UCS-4 encoded form.
Definition: common.h:499
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
#define FFMAX(a, b)
Definition: common.h:103
#define HAVE_THREADS
Definition: config.h:275
#define CONFIG_MEMORY_POISONING
Definition: config.h:596
#define CONFIG_GRAY
Definition: config.h:556
#define NULL
Definition: coverity.c:32
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: decode.c:1893
static int hwaccel_init(AVCodecContext *avctx, const AVCodecHWConfigInternal *hw_config)
Definition: decode.c:1268
static void hwaccel_uninit(AVCodecContext *avctx)
Definition: decode.c:1305
int ff_decode_preinit(AVCodecContext *avctx)
Perform decoder initialization and validation.
Definition: decode.c:2008
int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
Set various frame properties from the codec context / packet data.
Definition: decode.c:1722
static void insert_ts(AVBPrint *buf, int ts)
Definition: decode.c:953
int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Identical in function to ff_get_buffer(), except it reuses the existing buffer if available.
Definition: decode.c:2000
static int add_metadata_from_side_data(const AVPacket *avpkt, AVFrame *frame)
Definition: decode.c:1710
static void frame_pool_free(void *opaque, uint8_t *data)
Definition: decode.c:1454
#define UTF8_MAX_BYTES
Definition: decode.c:871
static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:1483
int ff_attach_decode_data(AVFrame *frame)
Definition: decode.c:1869
static FF_ENABLE_DEPRECATION_WARNINGS void get_subtitle_defaults(AVSubtitle *sub)
Definition: decode.c:865
static int decode_simple_internal(AVCodecContext *avctx, AVFrame *frame, int64_t *discarded_samples)
Definition: decode.c:297
static int decode_simple_receive_frame(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:518
int ff_decode_get_packet(AVCodecContext *avctx, AVPacket *pkt)
Called by decoders to get the next packet for decoding.
Definition: decode.c:222
static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
Definition: decode.c:1639
static int compat_decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, const AVPacket *pkt)
Definition: decode.c:767
int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
Select the (possibly hardware accelerated) pixel format.
Definition: decode.c:1317
static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:1594
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:265
static int decode_bsfs_init(AVCodecContext *avctx)
Definition: decode.c:188
static int apply_param_change(AVCodecContext *avctx, const AVPacket *avpkt)
Definition: decode.c:67
static AVBufferRef * frame_pool_alloc(void)
Definition: decode.c:1465
static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
Definition: decode.c:1963
static int decode_receive_frame_internal(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:534
static int copy_packet_props(AVPacket *dst, const AVPacket *src)
Definition: decode.c:148
static int convert_sub_to_old_ass_form(AVSubtitle *sub, const AVPacket *pkt, AVRational tb)
Definition: decode.c:967
static int apply_cropping(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:616
static FF_DISABLE_DEPRECATION_WARNINGS int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
Definition: decode.c:721
#define IS_EMPTY(pkt)
Definition: decode.c:146
static void validate_avframe_allocation(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:1833
int ff_decode_get_hw_frames_ctx(AVCodecContext *avctx, enum AVHWDeviceType dev_type)
Make sure avctx.hw_frames_ctx is set.
Definition: decode.c:1168
static int utf8_check(const uint8_t *str)
Definition: decode.c:933
static int recode_subtitle(AVCodecContext *avctx, AVPacket **outpkt, AVPacket *inpkt, AVPacket *buf_pkt)
Definition: decode.c:872
static int extract_packet_props(AVCodecInternal *avci, const AVPacket *pkt)
Definition: decode.c:160
static void decode_data_free(void *opaque, uint8_t *data)
Definition: decode.c:1856
static AVFrame * frame
static float sub(float src0, float src1)
reference-counted frame API
#define AV_NUM_DATA_POINTERS
Definition: frame.h:319
int av_get_channel_layout_nb_channels(uint64_t channel_layout)
Return the number of channels in the channel layout.
void av_bsf_free(AVBSFContext **pctx)
Free a bitstream filter context and everything associated with it; write NULL into the supplied point...
Definition: bsf.c:40
int avcodec_parameters_from_context(AVCodecParameters *par, const AVCodecContext *codec)
Fill the parameters struct based on the values from the supplied codec context.
Definition: codec_par.c:90
int av_bsf_init(AVBSFContext *ctx)
Prepare the filter for use, after all the parameters and options have been set.
Definition: bsf.c:148
#define AV_CODEC_FLAG2_EXPORT_MVS
Export motion vectors through frame side data.
Definition: avcodec.h:380
#define AV_CODEC_CAP_DELAY
Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...
Definition: codec.h:77
const AVCodecHWConfig * avcodec_get_hw_config(const AVCodec *codec, int index)
Retrieve supported hardware configurations for a codec.
Definition: utils.c:873
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:52
#define AV_CODEC_CAP_SUBFRAMES
Codec can output multiple frames per AVPacket Normally demuxers return one frame at a time,...
Definition: codec.h:95
#define AV_GET_BUFFER_FLAG_REF
The decoder will keep a reference to the frame and may reuse it later.
Definition: avcodec.h:514
int av_codec_is_decoder(const AVCodec *codec)
Definition: utils.c:79
#define AV_CODEC_FLAG_TRUNCATED
Input bitstream might be truncated at a random location instead of only at frame boundaries.
Definition: avcodec.h:317
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
Definition: avcodec.h:308
int av_bsf_receive_packet(AVBSFContext *ctx, AVPacket *pkt)
Retrieve a filtered packet.
Definition: bsf.c:227
void avsubtitle_free(AVSubtitle *sub)
Free all allocated data in the given subtitle struct.
Definition: avcodec.c:551
#define AV_CODEC_FLAG_UNALIGNED
Allow decoders to produce frames with data planes that are not aligned to CPU requirements (e....
Definition: avcodec.h:271
int av_bsf_send_packet(AVBSFContext *ctx, AVPacket *pkt)
Submit a packet for filtering.
Definition: bsf.c:201
#define AV_CODEC_FLAG_DROPCHANGED
Don't output frames whose parameters differ from first decoded frame in stream.
Definition: avcodec.h:292
#define AV_CODEC_PROP_BITMAP_SUB
Subtitle codec is bitmap based Decoded AVSubtitle data can be read from the AVSubtitleRect->pict fiel...
Definition: codec_desc.h:97
int av_bsf_list_parse_str(const char *str, AVBSFContext **bsf_lst)
Parse string describing list of bitstream filters and create single AVBSFContext describing the whole...
Definition: bsf.c:523
#define AV_CODEC_EXPORT_DATA_MVS
Export motion vectors through frame side data.
Definition: avcodec.h:403
#define AV_CODEC_CAP_PARAM_CHANGE
Codec supports changed parameters at any point.
Definition: codec.h:116
#define AV_CODEC_PROP_TEXT_SUB
Subtitle codec is text based.
Definition: codec_desc.h:102
#define AV_CODEC_FLAG2_SKIP_MANUAL
Do not skip samples and export skip information as frame side data.
Definition: avcodec.h:384
@ AV_CODEC_HW_CONFIG_METHOD_AD_HOC
The codec supports this format by some ad-hoc method.
Definition: codec.h:440
@ AV_CODEC_HW_CONFIG_METHOD_HW_FRAMES_CTX
The codec supports this format via the hw_frames_ctx interface.
Definition: codec.h:424
@ AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX
The codec supports this format via the hw_device_ctx interface.
Definition: codec.h:411
@ AV_CODEC_HW_CONFIG_METHOD_INTERNAL
The codec supports this format by some internal method.
Definition: codec.h:431
@ SUBTITLE_ASS
Formatted text, the ass field must be set by the decoder and is authoritative.
Definition: avcodec.h:2682
int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
The default callback for AVCodecContext.get_buffer2().
Definition: decode.c:1686
int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
Return decoded output data from a decoder.
Definition: decode.c:643
void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height, int linesize_align[AV_NUM_DATA_POINTERS])
Modify width and height values so that they will result in a memory buffer that is acceptable for the...
Definition: utils.c:134
int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture, int *got_picture_ptr, const AVPacket *avpkt)
Decode the video frame of size avpkt->size from avpkt->data into picture.
Definition: decode.c:848
int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub, int *got_sub_ptr, AVPacket *avpkt)
Decode a subtitle message.
Definition: decode.c:1025
int attribute_align_arg avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt)
Supply raw packet data as input to a decoder.
Definition: decode.c:580
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:1219
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding.
Definition: avcodec.h:215
int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx, AVFrame *frame, int *got_frame_ptr, const AVPacket *avpkt)
Decode the audio frame of size avpkt->size from avpkt->data into frame.
Definition: decode.c:855
#define AV_HWACCEL_CODEC_CAP_EXPERIMENTAL
HWAccel is experimental and is thus avoided in favor of non experimental codecs.
Definition: avcodec.h:2604
enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *avctx, const enum AVPixelFormat *fmt)
Definition: decode.c:1105
int avcodec_is_open(AVCodecContext *s)
Definition: avcodec.c:848
void avcodec_flush_buffers(AVCodecContext *avctx)
Reset the internal codec state / flush internal buffers.
Definition: avcodec.c:491
#define AV_PKT_FLAG_DISCARD
Flag is used to discard packets which are required to maintain valid decoder state but are not requir...
Definition: packet.h:417
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:634
AVPacketSideDataType
Definition: packet.h:40
int av_packet_ref(AVPacket *dst, const AVPacket *src)
Setup a new reference to the data described by a given packet.
Definition: avpacket.c:641
int av_packet_copy_props(AVPacket *dst, const AVPacket *src)
Copy only "properties" fields from src to dst.
Definition: avpacket.c:600
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
Definition: avpacket.c:99
@ AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT
Definition: packet.h:432
@ AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT
Definition: packet.h:433
@ AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE
Definition: packet.h:434
@ AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS
Definition: packet.h:435
@ AV_PKT_DATA_STRINGS_METADATA
A list of zero terminated key/value strings.
Definition: packet.h:172
@ AV_PKT_DATA_S12M_TIMECODE
Timecode which conforms to SMPTE ST 12-1:2014.
Definition: packet.h:291
@ AV_PKT_DATA_SKIP_SAMPLES
Recommmends skipping the specified number of samples.
Definition: packet.h:156
@ AV_PKT_DATA_ICC_PROFILE
ICC profile data consisting of an opaque octet buffer following the format described by ISO 15076-1.
Definition: packet.h:274
@ AV_PKT_DATA_MASTERING_DISPLAY_METADATA
Mastering display metadata (based on SMPTE-2086:2014).
Definition: packet.h:222
@ AV_PKT_DATA_AUDIO_SERVICE_TYPE
This side data should be associated with an audio stream and corresponds to enum AVAudioServiceType.
Definition: packet.h:120
@ AV_PKT_DATA_A53_CC
ATSC A53 Part 4 Closed Captions.
Definition: packet.h:242
@ AV_PKT_DATA_SPHERICAL
This side data should be associated with a video stream and corresponds to the AVSphericalMapping str...
Definition: packet.h:228
@ AV_PKT_DATA_DISPLAYMATRIX
This side data contains a 3x3 transformation matrix describing an affine transformation that needs to...
Definition: packet.h:108
@ AV_PKT_DATA_PARAM_CHANGE
An AV_PKT_DATA_PARAM_CHANGE side data packet is laid out as follows:
Definition: packet.h:72
@ AV_PKT_DATA_STEREO3D
This side data should be associated with a video stream and contains Stereoscopic 3D information in f...
Definition: packet.h:114
@ AV_PKT_DATA_CONTENT_LIGHT_LEVEL
Content light level (based on CTA-861.3).
Definition: packet.h:235
@ AV_PKT_DATA_REPLAYGAIN
This side data should be associated with an audio stream and contains ReplayGain information in form ...
Definition: packet.h:99
void av_buffer_unref(AVBufferRef **buf)
Free a given reference and automatically free the buffer if there are no more references to it.
Definition: buffer.c:125
AVBufferRef * av_buffer_allocz(buffer_size_t size)
Same as av_buffer_alloc(), except the returned buffer will be initialized to zero.
Definition: buffer.c:83
AVBufferRef * av_buffer_create(uint8_t *data, buffer_size_t size, void(*free)(void *opaque, uint8_t *data), void *opaque, int flags)
Create an AVBuffer from an existing array.
Definition: buffer.c:29
#define AV_BUFFER_FLAG_READONLY
Always treat the buffer as read-only, even when it has only one reference.
Definition: buffer.h:128
AVBufferPool * av_buffer_pool_init(buffer_size_t size, AVBufferRef *(*alloc)(buffer_size_t size))
Allocate and initialize a buffer pool.
Definition: buffer.c:266
AVBufferRef * av_buffer_pool_get(AVBufferPool *pool)
Allocate a new AVBuffer, reusing an old buffer from the pool when available.
Definition: buffer.c:373
void av_buffer_pool_uninit(AVBufferPool **ppool)
Mark the pool as being available for freeing.
Definition: buffer.c:308
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
#define AVERROR_BUG
Internal bug, also see AVERROR_BUG2.
Definition: error.h:50
#define AVERROR_INPUT_CHANGED
Input changed between calls. Reconfiguration is required. (can be OR-ed with AVERROR_OUTPUT_CHANGED)
Definition: error.h:73
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
#define AVERROR_EOF
End of file.
Definition: error.h:55
#define av_err2str(errnum)
Convenience macro, the return value should be used only directly in function arguments but never stan...
Definition: error.h:119
#define AVERROR(e)
Definition: error.h:43
#define AV_FRAME_FLAG_DISCARD
A flag to mark the frames which need to be decoded, but shouldn't be output.
Definition: frame.h:547
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
Definition: frame.c:553
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
Definition: frame.c:594
void av_frame_move_ref(AVFrame *dst, AVFrame *src)
Move everything contained in src to dst and reset src.
Definition: frame.c:582
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:203
AVFrameSideData * av_frame_new_side_data(AVFrame *frame, enum AVFrameSideDataType type, buffer_size_t size)
Add a new side data to a frame.
Definition: frame.c:726
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:658
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:190
AVFrameSideDataType
Definition: frame.h:48
int av_frame_apply_cropping(AVFrame *frame, int flags)
Crop the given video AVFrame according to its crop_left/crop_top/crop_right/ crop_bottom fields.
Definition: frame.c:891
int av_frame_copy(AVFrame *dst, const AVFrame *src)
Copy the frame data from src to dst.
Definition: frame.c:799
@ AV_FRAME_CROP_UNALIGNED
Apply the maximum possible cropping, even if it requires setting the AVFrame.data[] entries to unalig...
Definition: frame.h:967
@ AV_FRAME_DATA_SPHERICAL
The data represents the AVSphericalMapping structure defined in libavutil/spherical....
Definition: frame.h:130
@ AV_FRAME_DATA_CONTENT_LIGHT_LEVEL
Content light level (based on CTA-861.3).
Definition: frame.h:136
@ AV_FRAME_DATA_DISPLAYMATRIX
This side data contains a 3x3 transformation matrix describing an affine transformation that needs to...
Definition: frame.h:84
@ AV_FRAME_DATA_A53_CC
ATSC A53 Part 4 Closed Captions.
Definition: frame.h:58
@ AV_FRAME_DATA_AUDIO_SERVICE_TYPE
This side data must be associated with an audio frame and corresponds to enum AVAudioServiceType defi...
Definition: frame.h:113
@ AV_FRAME_DATA_REPLAYGAIN
ReplayGain information in the form of the AVReplayGain struct.
Definition: frame.h:76
@ AV_FRAME_DATA_SKIP_SAMPLES
Recommmends skipping the specified number of samples.
Definition: frame.h:108
@ AV_FRAME_DATA_MASTERING_DISPLAY_METADATA
Mastering display metadata associated with a video frame.
Definition: frame.h:119
@ AV_FRAME_DATA_ICC_PROFILE
The data contains an ICC profile as an opaque octet buffer following the format described by ISO 1507...
Definition: frame.h:143
@ AV_FRAME_DATA_S12M_TIMECODE
Timecode which conforms to SMPTE ST 12-1.
Definition: frame.h:168
@ AV_FRAME_DATA_STEREO3D
Stereoscopic 3d metadata.
Definition: frame.h:63
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:215
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:200
#define AV_LOG_INFO
Standard information.
Definition: log.h:205
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
AVRational av_mul_q(AVRational b, AVRational c)
Multiply two rationals.
Definition: rational.c:80
static AVRational av_make_q(int num, int den)
Create an AVRational.
Definition: rational.h:71
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
Definition: rational.h:159
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
Definition: mathematics.c:142
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:237
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:253
void * av_mallocz_array(size_t nmemb, size_t size)
Allocate a memory block for an array with av_mallocz().
Definition: mem.c:190
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
@ AVMEDIA_TYPE_SUBTITLE
Definition: avutil.h:204
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
int av_image_fill_plane_sizes(size_t sizes[4], enum AVPixelFormat pix_fmt, int height, const ptrdiff_t linesizes[4])
Fill plane sizes for an image with pixel format pix_fmt and height height.
Definition: imgutils.c:111
int av_image_check_size2(unsigned int w, unsigned int h, int64_t max_pixels, enum AVPixelFormat pix_fmt, int log_offset, void *log_ctx)
Check if the given dimension of an image is valid, meaning that all bytes of a plane of an image with...
Definition: imgutils.c:288
int av_image_fill_linesizes(int linesizes[4], enum AVPixelFormat pix_fmt, int width)
Fill plane linesizes for an image with pixel format pix_fmt and width width.
Definition: imgutils.c:89
int av_image_check_sar(unsigned int w, unsigned int h, AVRational sar)
Check if the given sample aspect ratio of an image is valid.
Definition: imgutils.c:322
int av_sample_fmt_is_planar(enum AVSampleFormat sample_fmt)
Check if the sample format is planar.
Definition: samplefmt.c:112
int av_samples_get_buffer_size(int *linesize, int nb_channels, int nb_samples, enum AVSampleFormat sample_fmt, int align)
Get the required buffer size for the given audio parameters.
Definition: samplefmt.c:119
@ AV_SAMPLE_FMT_NONE
Definition: samplefmt.h:59
int av_samples_copy(uint8_t **dst, uint8_t *const *src, int dst_offset, int src_offset, int nb_samples, int nb_channels, enum AVSampleFormat sample_fmt)
Copy samples from src to dst.
Definition: samplefmt.c:213
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
Definition: avutil.h:260
for(j=16;j >0;--j)
static enum AVPixelFormat hw_pix_fmt
Definition: hw_decode.c:46
int av_hwframe_ctx_init(AVBufferRef *ref)
Finalize the context before use.
Definition: hwcontext.c:333
AVBufferRef * av_hwframe_ctx_alloc(AVBufferRef *device_ref_in)
Allocate an AVHWFramesContext tied to a given device context.
Definition: hwcontext.c:247
int av_hwframe_get_buffer(AVBufferRef *hwframe_ref, AVFrame *frame, int flags)
Allocate a new frame attached to the given AVHWFramesContext.
Definition: hwcontext.c:502
const char * av_hwdevice_get_type_name(enum AVHWDeviceType type)
Get the string name of an AVHWDeviceType.
Definition: hwcontext.c:92
AVHWDeviceType
Definition: hwcontext.h:27
int avpriv_set_systematic_pal2(uint32_t pal[256], enum AVPixelFormat pix_fmt)
Definition: imgutils.c:176
misc image utilities
int i
Definition: input.c:407
#define AV_WL8(p, d)
Definition: intreadwrite.h:399
#define AV_RL8(x)
Definition: intreadwrite.h:398
#define AV_WL32(p, v)
Definition: intreadwrite.h:426
#define FF_CODEC_CAP_SETS_PKT_DTS
Decoders marked with FF_CODEC_CAP_SETS_PKT_DTS want to set AVFrame.pkt_dts manually.
Definition: internal.h:56
#define FF_REGET_BUFFER_FLAG_READONLY
the returned buffer does not need to be writable
Definition: internal.h:307
#define FF_CODEC_CAP_EXPORTS_CROPPING
The decoder sets the cropping fields in the output frames manually.
Definition: internal.h:67
#define FF_SANE_NB_CHANNELS
Definition: internal.h:102
#define STRIDE_ALIGN
Definition: internal.h:113
int ff_set_dimensions(AVCodecContext *s, int width, int height)
Check that the provided frame dimensions are valid and set them on the codec context.
Definition: utils.c:84
int av_fifo_size(const AVFifoBuffer *f)
Return the amount of data in bytes in the AVFifoBuffer, that is the amount of data you can read from ...
Definition: fifo.c:77
int av_fifo_generic_read(AVFifoBuffer *f, void *dest, int buf_size, void(*func)(void *, void *, int))
Feed data from an AVFifoBuffer to a user-supplied callback.
Definition: fifo.c:213
int av_fifo_space(const AVFifoBuffer *f)
Return the amount of space in bytes in the AVFifoBuffer, that is the amount of data you can write int...
Definition: fifo.c:82
int av_fifo_generic_write(AVFifoBuffer *f, void *src, int size, int(*func)(void *, void *, int))
Feed data from a user-supplied callback to an AVFifoBuffer.
Definition: fifo.c:122
int av_fifo_grow(AVFifoBuffer *f, unsigned int size)
Enlarge an AVFifoBuffer.
Definition: fifo.c:107
common internal API header
#define SIZE_SPECIFIER
Definition: internal.h:193
int buffer_size_t
Definition: internal.h:306
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:83
#define FF_PSEUDOPAL
Definition: internal.h:299
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:84
#define attribute_align_arg
Definition: internal.h:61
#define emms_c()
Definition: internal.h:54
const char * desc
Definition: libsvtav1.c:79
uint8_t w
Definition: llviddspenc.c:39
static const struct @322 planes[]
#define FFALIGN(x, a)
Definition: macros.h:48
const char data[16]
Definition: mxf.c:142
AVOptions.
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2613
const char * av_get_pix_fmt_name(enum AVPixelFormat pix_fmt)
Return the short name for a pixel format, NULL in case pix_fmt is unknown.
Definition: pixdesc.c:2489
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2573
#define AV_PIX_FMT_FLAG_HWACCEL
Pixel format is an HW accelerated format.
Definition: pixdesc.h:140
#define AV_PIX_FMT_FLAG_PAL
Pixel format has a palette in data[1], values are indexes in this palette.
Definition: pixdesc.h:132
@ AVCHROMA_LOC_UNSPECIFIED
Definition: pixfmt.h:606
@ AVCOL_RANGE_UNSPECIFIED
Definition: pixfmt.h:552
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
@ AVCOL_PRI_UNSPECIFIED
Definition: pixfmt.h:461
@ AVCOL_TRC_UNSPECIFIED
Definition: pixfmt.h:486
@ AVCOL_SPC_UNSPECIFIED
Definition: pixfmt.h:515
int ff_thread_decode_frame(AVCodecContext *avctx, AVFrame *picture, int *got_picture_ptr, AVPacket *avpkt)
Submit a new frame to a decoding thread.
#define tb
Definition: regdef.h:68
#define FF_ARRAY_ELEMS(a)
AVCodecParameters * par_in
Parameters of the input stream.
Definition: bsf.h:77
AVRational time_base_in
The timebase used for the timestamps of the input packets.
Definition: bsf.h:89
The buffer pool.
A reference to a data buffer.
Definition: buffer.h:84
int size
Size of data in bytes.
Definition: buffer.h:97
uint8_t * data
The data buffer.
Definition: buffer.h:92
main external API structure.
Definition: avcodec.h:536
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:746
int64_t pts_correction_last_dts
PTS of the last frame.
Definition: avcodec.h:2102
const AVCodecDescriptor * codec_descriptor
AVCodecDescriptor.
Definition: avcodec.h:2092
int width
picture width / height.
Definition: avcodec.h:709
int64_t pts_correction_num_faulty_dts
Number of incorrect PTS values so far.
Definition: avcodec.h:2100
int64_t pts_correction_last_pts
Number of incorrect DTS values so far.
Definition: avcodec.h:2101
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:1368
int flags2
AV_CODEC_FLAG2_*.
Definition: avcodec.h:623
enum AVSampleFormat sample_fmt
audio sample format
Definition: avcodec.h:1204
int debug
debug
Definition: avcodec.h:1623
enum AVPixelFormat sw_pix_fmt
Nominal unaccelerated pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:2078
int64_t max_pixels
The number of pixels per image to maximally accept.
Definition: avcodec.h:2248
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition: avcodec.h:1171
char * sub_charenc
DTS of the last frame.
Definition: avcodec.h:2109
int strict_std_compliance
strictly follow the standard (MPEG-4, ...).
Definition: avcodec.h:1601
AVRational pkt_timebase
Timebase in which pkt_dts/pts and AVPacket.dts/pts are.
Definition: avcodec.h:2085
enum AVPixelFormat(* get_format)(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
callback to negotiate the pixelFormat
Definition: avcodec.h:788
enum AVColorPrimaries color_primaries
Chromaticity coordinates of the source primaries.
Definition: avcodec.h:1150
AVBufferRef * hw_frames_ctx
A reference to the AVHWFramesContext describing the input (for encoding) or output (decoding) frames.
Definition: avcodec.h:2218
enum AVMediaType codec_type
Definition: avcodec.h:544
int apply_cropping
Video decoding only.
Definition: avcodec.h:2306
AVRational framerate
Definition: avcodec.h:2071
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown) That is the width of a pixel divided by the height of the pixel.
Definition: avcodec.h:915
const struct AVHWAccel * hwaccel
Hardware accelerator in use.
Definition: avcodec.h:1680
int active_thread_type
Which multithreading methods are in use by the codec.
Definition: avcodec.h:1792
int sub_charenc_mode
Subtitles character encoding mode.
Definition: avcodec.h:2117
int64_t reordered_opaque
opaque 64-bit number (generally a PTS) that will be reordered and output in AVFrame....
Definition: avcodec.h:1673
int has_b_frames
Size of the frame reordering buffer in the decoder.
Definition: avcodec.h:826
int64_t pts_correction_num_faulty_pts
Current statistics for PTS correction.
Definition: avcodec.h:2099
const struct AVCodec * codec
Definition: avcodec.h:545
int thread_type
Which multithreading methods to use.
Definition: avcodec.h:1783
int export_side_data
Bit set of AV_CODEC_EXPORT_DATA_* flags, which affects the kind of metadata exported in frame,...
Definition: avcodec.h:2346
enum AVColorSpace colorspace
YUV colorspace type.
Definition: avcodec.h:1164
int sub_text_format
Control the form of AVSubtitle.rects[N]->ass.
Definition: avcodec.h:2225
int sample_rate
samples per second
Definition: avcodec.h:1196
int frame_number
Frame counter, set by libavcodec.
Definition: avcodec.h:1227
attribute_deprecated int thread_safe_callbacks
Set by the client if its custom get_buffer() callback can be called synchronously from another thread...
Definition: avcodec.h:1812
int thread_count
thread count is used to decide how many independent tasks should be passed to execute()
Definition: avcodec.h:1773
int coded_height
Definition: avcodec.h:724
enum AVColorTransferCharacteristic color_trc
Color Transfer Characteristic.
Definition: avcodec.h:1157
uint8_t * subtitle_header
Header containing style information for text subtitles.
Definition: avcodec.h:2016
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented.
Definition: avcodec.h:659
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:616
int channels
number of audio channels
Definition: avcodec.h:1197
enum AVChromaLocation chroma_sample_location
This defines the location of chroma samples.
Definition: avcodec.h:1178
AVBufferRef * hw_device_ctx
A reference to the AVHWDeviceContext describing the device which will be used by a hardware encoder/d...
Definition: avcodec.h:2270
int extra_hw_frames
Definition: avcodec.h:2320
int64_t max_samples
The number of samples per frame to maximally accept.
Definition: avcodec.h:2336
int coded_width
Bitstream width / height, may be different from width/height e.g.
Definition: avcodec.h:724
uint64_t channel_layout
Audio channel layout.
Definition: avcodec.h:1247
int(* get_buffer2)(struct AVCodecContext *s, AVFrame *frame, int flags)
This callback is called at the beginning of each frame to get data buffer(s) for it.
Definition: avcodec.h:1351
struct AVCodecInternal * internal
Private context used for internal data.
Definition: avcodec.h:571
int lowres
low resolution decoding, 1-> 1/2 size, 2->1/4 size
Definition: avcodec.h:1754
int err_recognition
Error recognition; may misdetect some more or less valid parts as errors.
Definition: avcodec.h:1645
int props
Codec properties, a combination of AV_CODEC_PROP_* flags.
Definition: codec_desc.h:54
enum AVMediaType type
Definition: codec_desc.h:40
const AVHWAccel * hwaccel
If this configuration uses a hwaccel, a pointer to it.
Definition: hwconfig.h:39
AVCodecHWConfig public
This is the structure which will be returned to the user by avcodec_get_hw_config().
Definition: hwconfig.h:34
enum AVHWDeviceType device_type
The device type associated with the configuration.
Definition: codec.h:464
int methods
Bit set of AV_CODEC_HW_CONFIG_METHOD_* flags, describing the possible setup methods which can be used...
Definition: codec.h:457
enum AVPixelFormat pix_fmt
For decoders, a hardware pixel format which that decoder may be able to decode to if suitable hardwar...
Definition: codec.h:452
int initial_format
Definition: internal.h:210
int nb_draining_errors
Definition: internal.h:206
size_t compat_decode_consumed
Definition: internal.h:193
AVFrame * to_free
Definition: internal.h:140
AVPacket * last_pkt_props
Properties (timestamps+side data) extracted from the last packet passed for decoding.
Definition: internal.h:154
AVFifoBuffer * pkt_props
Definition: internal.h:155
AVBSFContext * bsf
Definition: internal.h:148
uint64_t initial_channel_layout
Definition: internal.h:214
int changed_frames_dropped
Definition: internal.h:209
void * hwaccel_priv_data
hwaccel-specific private data
Definition: internal.h:175
size_t compat_decode_partial_size
Definition: internal.h:196
int initial_channels
Definition: internal.h:213
AVFrame * buffer_frame
Definition: internal.h:186
AVPacket * buffer_pkt
buffers for using new encode/decode API through legacy API
Definition: internal.h:185
AVBufferRef * pool
Definition: internal.h:143
DecodeSimpleContext ds
Definition: internal.h:147
int skip_samples_multiplier
Definition: internal.h:203
int draining
checks API usage: after codec draining, flush is required to resume operation
Definition: internal.h:180
AVFrame * compat_decode_frame
Definition: internal.h:197
int initial_sample_rate
Definition: internal.h:212
int initial_height
Definition: internal.h:211
int skip_samples
Number of audio samples to skip at the start of the next decoded frame.
Definition: internal.h:170
int compat_decode_warned
Definition: internal.h:190
int showed_multi_packet_warning
Definition: internal.h:201
int caps_internal
Internal codec capabilities.
Definition: codec.h:328
int(* receive_frame)(struct AVCodecContext *avctx, struct AVFrame *frame)
Decode API with decoupled packet/frame dataflow.
Definition: codec.h:318
const char * bsfs
Decoding only, a comma-separated list of bitstream filters to apply to packets before decoding.
Definition: codec.h:334
const struct AVCodecHWConfigInternal *const * hw_configs
Array of pointers to hardware configurations supported by the codec, or NULL if no hardware supported...
Definition: codec.h:343
int(* decode)(struct AVCodecContext *avctx, void *outdata, int *got_frame_ptr, struct AVPacket *avpkt)
Decode picture or subtitle data.
Definition: codec.h:303
enum AVMediaType type
Definition: codec.h:210
int capabilities
Codec capabilities.
Definition: codec.h:216
uint8_t max_lowres
maximum value for lowres supported by the decoder
Definition: codec.h:222
Structure to hold side data for an AVFrame.
Definition: frame.h:220
uint8_t * data
Definition: frame.h:222
This structure describes decoded (raw) audio or video data.
Definition: frame.h:318
int nb_samples
number of audio samples (per channel) described by this frame
Definition: frame.h:384
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:411
int64_t best_effort_timestamp
frame timestamp estimated using various heuristics, in stream time base
Definition: frame.h:582
size_t crop_right
Definition: frame.h:681
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:332
enum AVChromaLocation chroma_location
Definition: frame.h:575
int width
Definition: frame.h:376
AVBufferRef ** extended_buf
For planar audio which requires more than AV_NUM_DATA_POINTERS AVBufferRef pointers,...
Definition: frame.h:523
attribute_deprecated int64_t pkt_pts
PTS copied from the AVPacket that was decoded to produce this frame.
Definition: frame.h:419
int64_t pkt_duration
duration of the corresponding packet, expressed in AVStream->time_base units, 0 if unknown.
Definition: frame.h:597
int64_t pkt_pos
reordered pos from the last AVPacket that has been input into the decoder
Definition: frame.h:589
int pkt_size
size of the corresponding packet containing the compressed frame.
Definition: frame.h:633
int height
Definition: frame.h:376
int flags
Frame flags, a combination of AV_FRAME_FLAGS.
Definition: frame.h:555
AVBufferRef * buf[AV_NUM_DATA_POINTERS]
AVBuffer references backing the data for this frame.
Definition: frame.h:509
int channels
number of audio channels, only used for audio.
Definition: frame.h:624
enum AVColorPrimaries color_primaries
Definition: frame.h:564
AVDictionary * metadata
metadata.
Definition: frame.h:604
uint64_t channel_layout
Channel layout of the audio data.
Definition: frame.h:495
AVRational sample_aspect_ratio
Sample aspect ratio for the video frame, 0/1 if unknown/unspecified.
Definition: frame.h:406
AVBufferRef * private_ref
AVBufferRef for internal use by a single libav* library.
Definition: frame.h:697
size_t crop_top
Definition: frame.h:678
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition: frame.h:562
enum AVColorSpace colorspace
YUV colorspace type.
Definition: frame.h:573
int nb_extended_buf
Number of elements in extended_buf.
Definition: frame.h:527
int64_t pkt_dts
DTS copied from the AVPacket that triggered returning this frame.
Definition: frame.h:427
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:349
size_t crop_left
Definition: frame.h:680
enum AVColorTransferCharacteristic color_trc
Definition: frame.h:566
int64_t reordered_opaque
reordered opaque 64 bits (generally an integer or a double precision float PTS but can be anything).
Definition: frame.h:485
int sample_rate
Sample rate of the audio data.
Definition: frame.h:490
size_t crop_bottom
Definition: frame.h:679
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames,...
Definition: frame.h:391
uint8_t ** extended_data
pointers to the data planes/channels.
Definition: frame.h:365
int priv_data_size
Size of the private data to allocate in AVCodecInternal.hwaccel_priv_data.
Definition: avcodec.h:2582
int(* alloc_frame)(AVCodecContext *avctx, AVFrame *frame)
Allocate a custom buffer.
Definition: avcodec.h:2484
int(* uninit)(AVCodecContext *avctx)
Uninitialize the hwaccel private data.
Definition: avcodec.h:2576
int(* init)(AVCodecContext *avctx)
Initialize the hwaccel private data.
Definition: avcodec.h:2568
const char * name
Name of the hardware accelerated codec.
Definition: avcodec.h:2444
int capabilities
Hardware accelerated codec capabilities.
Definition: avcodec.h:2471
int(* frame_params)(AVCodecContext *avctx, AVBufferRef *hw_frames_ctx)
Fill the given hw_frames context with current codec parameters.
Definition: avcodec.h:2597
enum AVPixelFormat pix_fmt
Supported pixel format.
Definition: avcodec.h:2465
This struct aggregates all the (hardware/vendor-specific) "high-level" state, i.e.
Definition: hwcontext.h:61
enum AVHWDeviceType type
This field identifies the underlying API used for hardware access.
Definition: hwcontext.h:79
This struct describes a set or pool of "hardware" frames (i.e.
Definition: hwcontext.h:124
enum AVPixelFormat format
The pixel format identifying the underlying HW surface type.
Definition: hwcontext.h:209
int initial_pool_size
Initial size of the frame pool.
Definition: hwcontext.h:199
This structure stores compressed data.
Definition: packet.h:346
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:375
int size
Definition: packet.h:370
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: packet.h:387
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: packet.h:362
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed.
Definition: packet.h:368
uint8_t * data
Definition: packet.h:369
int64_t pos
byte position in stream, -1 if unknown
Definition: packet.h:389
int side_data_elems
Definition: packet.h:381
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
Rational number (pair of numerator and denominator).
Definition: rational.h:58
int num
Numerator.
Definition: rational.h:59
int den
Denominator.
Definition: rational.h:60
AVPacket * in_pkt
Definition: internal.h:117
This struct stores per-frame lavc-internal data and is attached to it via private_ref.
Definition: decode.h:34
void(* hwaccel_priv_free)(void *priv)
Definition: decode.h:53
void(* post_process_opaque_free)(void *opaque)
Definition: decode.h:47
void * post_process_opaque
Definition: decode.h:46
void * hwaccel_priv
Per-frame private data for hwaccels.
Definition: decode.h:52
int(* post_process)(void *logctx, AVFrame *frame)
The callback to perform some delayed processing on the frame right before it is returned to the calle...
Definition: decode.h:45
int channels
Definition: decode.c:63
int planes
Definition: decode.c:62
int stride_align[AV_NUM_DATA_POINTERS]
Definition: decode.c:60
int width
Definition: decode.c:59
int height
Definition: decode.c:59
int linesize[4]
Definition: decode.c:61
AVBufferPool * pools[4]
Pools for each data plane.
Definition: decode.c:53
int samples
Definition: decode.c:64
int format
Definition: decode.c:58
Definition: f_ebur128.c:91
#define av_malloc_array(a, b)
#define av_freep(p)
#define av_malloc(s)
#define av_log(a,...)
static uint8_t tmp[11]
Definition: aes_ctr.c:27
#define src
Definition: vp8dsp.c:255
AVPacket * pkt
Definition: movenc.c:59
AVFormatContext * ctx
Definition: movenc.c:48
static void finish(void)
Definition: movenc.c:342
static int64_t pts
int size
if(ret< 0)
Definition: vf_mcdeint.c:282
float min