FFmpeg
decode.c
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1 /*
2  * generic decoding-related code
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include <stdint.h>
22 #include <string.h>
23 
24 #include "config.h"
25 
26 #if CONFIG_ICONV
27 # include <iconv.h>
28 #endif
29 
30 #include "libavutil/avassert.h"
31 #include "libavutil/avstring.h"
32 #include "libavutil/bprint.h"
34 #include "libavutil/common.h"
35 #include "libavutil/frame.h"
36 #include "libavutil/hwcontext.h"
37 #include "libavutil/imgutils.h"
38 #include "libavutil/internal.h"
39 #include "libavutil/intmath.h"
40 #include "libavutil/opt.h"
41 
42 #include "avcodec.h"
43 #include "bytestream.h"
44 #include "bsf.h"
45 #include "decode.h"
46 #include "hwconfig.h"
47 #include "internal.h"
48 #include "thread.h"
49 
50 typedef struct FramePool {
51  /**
52  * Pools for each data plane. For audio all the planes have the same size,
53  * so only pools[0] is used.
54  */
56 
57  /*
58  * Pool parameters
59  */
60  int format;
61  int width, height;
63  int linesize[4];
64  int planes;
65  int channels;
66  int samples;
67 } FramePool;
68 
69 static int apply_param_change(AVCodecContext *avctx, const AVPacket *avpkt)
70 {
71  int ret;
72  size_t size;
73  const uint8_t *data;
74  uint32_t flags;
75  int64_t val;
76 
78  if (!data)
79  return 0;
80 
81  if (!(avctx->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE)) {
82  av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
83  "changes, but PARAM_CHANGE side data was sent to it.\n");
84  ret = AVERROR(EINVAL);
85  goto fail2;
86  }
87 
88  if (size < 4)
89  goto fail;
90 
91  flags = bytestream_get_le32(&data);
92  size -= 4;
93 
95  if (size < 4)
96  goto fail;
97  val = bytestream_get_le32(&data);
98  if (val <= 0 || val > INT_MAX) {
99  av_log(avctx, AV_LOG_ERROR, "Invalid channel count");
101  goto fail2;
102  }
103  avctx->channels = val;
104  size -= 4;
105  }
107  if (size < 8)
108  goto fail;
109  avctx->channel_layout = bytestream_get_le64(&data);
110  size -= 8;
111  }
113  if (size < 4)
114  goto fail;
115  val = bytestream_get_le32(&data);
116  if (val <= 0 || val > INT_MAX) {
117  av_log(avctx, AV_LOG_ERROR, "Invalid sample rate");
119  goto fail2;
120  }
121  avctx->sample_rate = val;
122  size -= 4;
123  }
125  if (size < 8)
126  goto fail;
127  avctx->width = bytestream_get_le32(&data);
128  avctx->height = bytestream_get_le32(&data);
129  size -= 8;
130  ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
131  if (ret < 0)
132  goto fail2;
133  }
134 
135  return 0;
136 fail:
137  av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
139 fail2:
140  if (ret < 0) {
141  av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
142  if (avctx->err_recognition & AV_EF_EXPLODE)
143  return ret;
144  }
145  return 0;
146 }
147 
148 #define IS_EMPTY(pkt) (!(pkt)->data)
149 
150 static int copy_packet_props(AVPacket *dst, const AVPacket *src)
151 {
152  int ret = av_packet_copy_props(dst, src);
153  if (ret < 0)
154  return ret;
155 
156  dst->size = src->size; // HACK: Needed for ff_decode_frame_props().
157  dst->data = (void*)1; // HACK: Needed for IS_EMPTY().
158 
159  return 0;
160 }
161 
163 {
164  AVPacket tmp = { 0 };
165  int ret = 0;
166 
167  if (IS_EMPTY(avci->last_pkt_props)) {
168  if (av_fifo_size(avci->pkt_props) >= sizeof(*pkt)) {
170  sizeof(*avci->last_pkt_props), NULL);
171  } else
172  return copy_packet_props(avci->last_pkt_props, pkt);
173  }
174 
175  if (av_fifo_space(avci->pkt_props) < sizeof(*pkt)) {
176  ret = av_fifo_grow(avci->pkt_props, sizeof(*pkt));
177  if (ret < 0)
178  return ret;
179  }
180 
182  if (ret < 0)
183  return ret;
184 
185  av_fifo_generic_write(avci->pkt_props, &tmp, sizeof(tmp), NULL);
186 
187  return 0;
188 }
189 
191 {
192  AVCodecInternal *avci = avctx->internal;
193  int ret;
194 
195  if (avci->bsf)
196  return 0;
197 
198  ret = av_bsf_list_parse_str(avctx->codec->bsfs, &avci->bsf);
199  if (ret < 0) {
200  av_log(avctx, AV_LOG_ERROR, "Error parsing decoder bitstream filters '%s': %s\n", avctx->codec->bsfs, av_err2str(ret));
201  if (ret != AVERROR(ENOMEM))
202  ret = AVERROR_BUG;
203  goto fail;
204  }
205 
206  /* We do not currently have an API for passing the input timebase into decoders,
207  * but no filters used here should actually need it.
208  * So we make up some plausible-looking number (the MPEG 90kHz timebase) */
209  avci->bsf->time_base_in = (AVRational){ 1, 90000 };
211  if (ret < 0)
212  goto fail;
213 
214  ret = av_bsf_init(avci->bsf);
215  if (ret < 0)
216  goto fail;
217 
218  return 0;
219 fail:
220  av_bsf_free(&avci->bsf);
221  return ret;
222 }
223 
225 {
226  AVCodecInternal *avci = avctx->internal;
227  int ret;
228 
229  if (avci->draining)
230  return AVERROR_EOF;
231 
232  ret = av_bsf_receive_packet(avci->bsf, pkt);
233  if (ret == AVERROR_EOF)
234  avci->draining = 1;
235  if (ret < 0)
236  return ret;
237 
240  if (ret < 0)
241  goto finish;
242  }
243 
244  ret = apply_param_change(avctx, pkt);
245  if (ret < 0)
246  goto finish;
247 
248  return 0;
249 finish:
251  return ret;
252 }
253 
254 /**
255  * Attempt to guess proper monotonic timestamps for decoded video frames
256  * which might have incorrect times. Input timestamps may wrap around, in
257  * which case the output will as well.
258  *
259  * @param pts the pts field of the decoded AVPacket, as passed through
260  * AVFrame.pts
261  * @param dts the dts field of the decoded AVPacket
262  * @return one of the input values, may be AV_NOPTS_VALUE
263  */
265  int64_t reordered_pts, int64_t dts)
266 {
267  int64_t pts = AV_NOPTS_VALUE;
268 
269  if (dts != AV_NOPTS_VALUE) {
270  ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
271  ctx->pts_correction_last_dts = dts;
272  } else if (reordered_pts != AV_NOPTS_VALUE)
273  ctx->pts_correction_last_dts = reordered_pts;
274 
275  if (reordered_pts != AV_NOPTS_VALUE) {
276  ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
277  ctx->pts_correction_last_pts = reordered_pts;
278  } else if(dts != AV_NOPTS_VALUE)
279  ctx->pts_correction_last_pts = dts;
280 
281  if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
282  && reordered_pts != AV_NOPTS_VALUE)
283  pts = reordered_pts;
284  else
285  pts = dts;
286 
287  return pts;
288 }
289 
290 /*
291  * The core of the receive_frame_wrapper for the decoders implementing
292  * the simple API. Certain decoders might consume partial packets without
293  * returning any output, so this function needs to be called in a loop until it
294  * returns EAGAIN.
295  **/
296 static inline int decode_simple_internal(AVCodecContext *avctx, AVFrame *frame, int64_t *discarded_samples)
297 {
298  AVCodecInternal *avci = avctx->internal;
299  DecodeSimpleContext *ds = &avci->ds;
300  AVPacket *pkt = ds->in_pkt;
301  int got_frame, actual_got_frame;
302  int ret;
303 
304  if (!pkt->data && !avci->draining) {
306  ret = ff_decode_get_packet(avctx, pkt);
307  if (ret < 0 && ret != AVERROR_EOF)
308  return ret;
309  }
310 
311  // Some codecs (at least wma lossless) will crash when feeding drain packets
312  // after EOF was signaled.
313  if (avci->draining_done)
314  return AVERROR_EOF;
315 
316  if (!pkt->data &&
317  !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY ||
319  return AVERROR_EOF;
320 
321  got_frame = 0;
322 
323  if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME) {
324  ret = ff_thread_decode_frame(avctx, frame, &got_frame, pkt);
325  } else {
326  ret = avctx->codec->decode(avctx, frame, &got_frame, pkt);
327 
329  frame->pkt_dts = pkt->dts;
330  if (avctx->codec->type == AVMEDIA_TYPE_VIDEO) {
331  if(!avctx->has_b_frames)
332  frame->pkt_pos = pkt->pos;
333  //FIXME these should be under if(!avctx->has_b_frames)
334  /* get_buffer is supposed to set frame parameters */
335  if (!(avctx->codec->capabilities & AV_CODEC_CAP_DR1)) {
336  if (!frame->sample_aspect_ratio.num) frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
337  if (!frame->width) frame->width = avctx->width;
338  if (!frame->height) frame->height = avctx->height;
339  if (frame->format == AV_PIX_FMT_NONE) frame->format = avctx->pix_fmt;
340  }
341  }
342  }
343  emms_c();
344  actual_got_frame = got_frame;
345 
346  if (avctx->codec->type == AVMEDIA_TYPE_VIDEO) {
347  if (frame->flags & AV_FRAME_FLAG_DISCARD)
348  got_frame = 0;
349  } else if (avctx->codec->type == AVMEDIA_TYPE_AUDIO) {
350  uint8_t *side;
351  size_t side_size;
352  uint32_t discard_padding = 0;
353  uint8_t skip_reason = 0;
354  uint8_t discard_reason = 0;
355 
356  if (ret >= 0 && got_frame) {
357  if (frame->format == AV_SAMPLE_FMT_NONE)
358  frame->format = avctx->sample_fmt;
359  if (!frame->channel_layout)
360  frame->channel_layout = avctx->channel_layout;
361  if (!frame->channels)
362  frame->channels = avctx->channels;
363  if (!frame->sample_rate)
364  frame->sample_rate = avctx->sample_rate;
365  }
366 
368  if(side && side_size>=10) {
369  avci->skip_samples = AV_RL32(side) * avci->skip_samples_multiplier;
370  discard_padding = AV_RL32(side + 4);
371  av_log(avctx, AV_LOG_DEBUG, "skip %d / discard %d samples due to side data\n",
372  avci->skip_samples, (int)discard_padding);
373  skip_reason = AV_RL8(side + 8);
374  discard_reason = AV_RL8(side + 9);
375  }
376 
377  if ((frame->flags & AV_FRAME_FLAG_DISCARD) && got_frame &&
378  !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
379  avci->skip_samples = FFMAX(0, avci->skip_samples - frame->nb_samples);
380  got_frame = 0;
381  *discarded_samples += frame->nb_samples;
382  }
383 
384  if (avci->skip_samples > 0 && got_frame &&
385  !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
386  if(frame->nb_samples <= avci->skip_samples){
387  got_frame = 0;
388  *discarded_samples += frame->nb_samples;
389  avci->skip_samples -= frame->nb_samples;
390  av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
391  avci->skip_samples);
392  } else {
393  av_samples_copy(frame->extended_data, frame->extended_data, 0, avci->skip_samples,
394  frame->nb_samples - avci->skip_samples, avctx->channels, frame->format);
395  if(avctx->pkt_timebase.num && avctx->sample_rate) {
396  int64_t diff_ts = av_rescale_q(avci->skip_samples,
397  (AVRational){1, avctx->sample_rate},
398  avctx->pkt_timebase);
399  if(frame->pts!=AV_NOPTS_VALUE)
400  frame->pts += diff_ts;
401  if(frame->pkt_dts!=AV_NOPTS_VALUE)
402  frame->pkt_dts += diff_ts;
403  if (frame->pkt_duration >= diff_ts)
404  frame->pkt_duration -= diff_ts;
405  } else {
406  av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
407  }
408  av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
409  avci->skip_samples, frame->nb_samples);
410  *discarded_samples += avci->skip_samples;
411  frame->nb_samples -= avci->skip_samples;
412  avci->skip_samples = 0;
413  }
414  }
415 
416  if (discard_padding > 0 && discard_padding <= frame->nb_samples && got_frame &&
417  !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
418  if (discard_padding == frame->nb_samples) {
419  *discarded_samples += frame->nb_samples;
420  got_frame = 0;
421  } else {
422  if(avctx->pkt_timebase.num && avctx->sample_rate) {
423  int64_t diff_ts = av_rescale_q(frame->nb_samples - discard_padding,
424  (AVRational){1, avctx->sample_rate},
425  avctx->pkt_timebase);
426  frame->pkt_duration = diff_ts;
427  } else {
428  av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for discarded samples.\n");
429  }
430  av_log(avctx, AV_LOG_DEBUG, "discard %d/%d samples\n",
431  (int)discard_padding, frame->nb_samples);
432  frame->nb_samples -= discard_padding;
433  }
434  }
435 
436  if ((avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL) && got_frame) {
438  if (fside) {
439  AV_WL32(fside->data, avci->skip_samples);
440  AV_WL32(fside->data + 4, discard_padding);
441  AV_WL8(fside->data + 8, skip_reason);
442  AV_WL8(fside->data + 9, discard_reason);
443  avci->skip_samples = 0;
444  }
445  }
446  }
447 
448  if (avctx->codec->type == AVMEDIA_TYPE_AUDIO &&
450  ret >= 0 && ret != pkt->size && !(avctx->codec->capabilities & AV_CODEC_CAP_SUBFRAMES)) {
451  av_log(avctx, AV_LOG_WARNING, "Multiple frames in a packet.\n");
452  avci->showed_multi_packet_warning = 1;
453  }
454 
455  if (!got_frame)
457 
458  if (ret >= 0 && avctx->codec->type == AVMEDIA_TYPE_VIDEO && !(avctx->flags & AV_CODEC_FLAG_TRUNCATED))
459  ret = pkt->size;
460 
461 #if FF_API_AVCTX_TIMEBASE
462  if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
463  avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
464 #endif
465 
466  /* do not stop draining when actual_got_frame != 0 or ret < 0 */
467  /* got_frame == 0 but actual_got_frame != 0 when frame is discarded */
468  if (avci->draining && !actual_got_frame) {
469  if (ret < 0) {
470  /* prevent infinite loop if a decoder wrongly always return error on draining */
471  /* reasonable nb_errors_max = maximum b frames + thread count */
472  int nb_errors_max = 20 + (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME ?
473  avctx->thread_count : 1);
474 
475  if (avci->nb_draining_errors++ >= nb_errors_max) {
476  av_log(avctx, AV_LOG_ERROR, "Too many errors when draining, this is a bug. "
477  "Stop draining and force EOF.\n");
478  avci->draining_done = 1;
479  ret = AVERROR_BUG;
480  }
481  } else {
482  avci->draining_done = 1;
483  }
484  }
485 
486  if (ret >= pkt->size || ret < 0) {
489  } else {
490  int consumed = ret;
491 
492  pkt->data += consumed;
493  pkt->size -= consumed;
497  avci->last_pkt_props->size -= consumed; // See extract_packet_props() comment.
500  }
501  }
502 
503  if (got_frame)
504  av_assert0(frame->buf[0]);
505 
506  return ret < 0 ? ret : 0;
507 }
508 
510 {
511  int ret;
512  int64_t discarded_samples = 0;
513 
514  while (!frame->buf[0]) {
515  if (discarded_samples > avctx->max_samples)
516  return AVERROR(EAGAIN);
517  ret = decode_simple_internal(avctx, frame, &discarded_samples);
518  if (ret < 0)
519  return ret;
520  }
521 
522  return 0;
523 }
524 
526 {
527  AVCodecInternal *avci = avctx->internal;
528  int ret;
529 
530  av_assert0(!frame->buf[0]);
531 
532  if (avctx->codec->receive_frame) {
533  ret = avctx->codec->receive_frame(avctx, frame);
534  if (ret != AVERROR(EAGAIN))
536  } else
538 
539  if (ret == AVERROR_EOF)
540  avci->draining_done = 1;
541 
543  IS_EMPTY(avci->last_pkt_props) && av_fifo_size(avci->pkt_props) >= sizeof(*avci->last_pkt_props))
545  avci->last_pkt_props, sizeof(*avci->last_pkt_props), NULL);
546 
547  if (!ret) {
548  frame->best_effort_timestamp = guess_correct_pts(avctx,
549  frame->pts,
550  frame->pkt_dts);
551 
552  /* the only case where decode data is not set should be decoders
553  * that do not call ff_get_buffer() */
554  av_assert0((frame->private_ref && frame->private_ref->size == sizeof(FrameDecodeData)) ||
555  !(avctx->codec->capabilities & AV_CODEC_CAP_DR1));
556 
557  if (frame->private_ref) {
558  FrameDecodeData *fdd = (FrameDecodeData*)frame->private_ref->data;
559 
560  if (fdd->post_process) {
561  ret = fdd->post_process(avctx, frame);
562  if (ret < 0) {
564  return ret;
565  }
566  }
567  }
568  }
569 
570  /* free the per-frame decode data */
571  av_buffer_unref(&frame->private_ref);
572 
573  return ret;
574 }
575 
576 int attribute_align_arg avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt)
577 {
578  AVCodecInternal *avci = avctx->internal;
579  int ret;
580 
581  if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
582  return AVERROR(EINVAL);
583 
584  if (avctx->internal->draining)
585  return AVERROR_EOF;
586 
587  if (avpkt && !avpkt->size && avpkt->data)
588  return AVERROR(EINVAL);
589 
591  if (avpkt && (avpkt->data || avpkt->side_data_elems)) {
592  ret = av_packet_ref(avci->buffer_pkt, avpkt);
593  if (ret < 0)
594  return ret;
595  }
596 
597  ret = av_bsf_send_packet(avci->bsf, avci->buffer_pkt);
598  if (ret < 0) {
600  return ret;
601  }
602 
603  if (!avci->buffer_frame->buf[0]) {
605  if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
606  return ret;
607  }
608 
609  return 0;
610 }
611 
613 {
614  /* make sure we are noisy about decoders returning invalid cropping data */
615  if (frame->crop_left >= INT_MAX - frame->crop_right ||
616  frame->crop_top >= INT_MAX - frame->crop_bottom ||
617  (frame->crop_left + frame->crop_right) >= frame->width ||
618  (frame->crop_top + frame->crop_bottom) >= frame->height) {
619  av_log(avctx, AV_LOG_WARNING,
620  "Invalid cropping information set by a decoder: "
622  "(frame size %dx%d). This is a bug, please report it\n",
623  frame->crop_left, frame->crop_right, frame->crop_top, frame->crop_bottom,
624  frame->width, frame->height);
625  frame->crop_left = 0;
626  frame->crop_right = 0;
627  frame->crop_top = 0;
628  frame->crop_bottom = 0;
629  return 0;
630  }
631 
632  if (!avctx->apply_cropping)
633  return 0;
634 
637 }
638 
639 int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
640 {
641  AVCodecInternal *avci = avctx->internal;
642  int ret, changed;
643 
645 
646  if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
647  return AVERROR(EINVAL);
648 
649  if (avci->buffer_frame->buf[0]) {
651  } else {
653  if (ret < 0)
654  return ret;
655  }
656 
657  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
658  ret = apply_cropping(avctx, frame);
659  if (ret < 0) {
661  return ret;
662  }
663  }
664 
665  avctx->frame_number++;
666 
667  if (avctx->flags & AV_CODEC_FLAG_DROPCHANGED) {
668 
669  if (avctx->frame_number == 1) {
670  avci->initial_format = frame->format;
671  switch(avctx->codec_type) {
672  case AVMEDIA_TYPE_VIDEO:
673  avci->initial_width = frame->width;
674  avci->initial_height = frame->height;
675  break;
676  case AVMEDIA_TYPE_AUDIO:
677  avci->initial_sample_rate = frame->sample_rate ? frame->sample_rate :
678  avctx->sample_rate;
679  avci->initial_channels = frame->channels;
680  avci->initial_channel_layout = frame->channel_layout;
681  break;
682  }
683  }
684 
685  if (avctx->frame_number > 1) {
686  changed = avci->initial_format != frame->format;
687 
688  switch(avctx->codec_type) {
689  case AVMEDIA_TYPE_VIDEO:
690  changed |= avci->initial_width != frame->width ||
691  avci->initial_height != frame->height;
692  break;
693  case AVMEDIA_TYPE_AUDIO:
694  changed |= avci->initial_sample_rate != frame->sample_rate ||
695  avci->initial_sample_rate != avctx->sample_rate ||
696  avci->initial_channels != frame->channels ||
697  avci->initial_channel_layout != frame->channel_layout;
698  break;
699  }
700 
701  if (changed) {
702  avci->changed_frames_dropped++;
703  av_log(avctx, AV_LOG_INFO, "dropped changed frame #%d pts %"PRId64
704  " drop count: %d \n",
705  avctx->frame_number, frame->pts,
706  avci->changed_frames_dropped);
708  return AVERROR_INPUT_CHANGED;
709  }
710  }
711  }
712  return 0;
713 }
714 
716 {
717  memset(sub, 0, sizeof(*sub));
718  sub->pts = AV_NOPTS_VALUE;
719 }
720 
721 #define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
722 static int recode_subtitle(AVCodecContext *avctx, AVPacket **outpkt,
723  AVPacket *inpkt, AVPacket *buf_pkt)
724 {
725 #if CONFIG_ICONV
726  iconv_t cd = (iconv_t)-1;
727  int ret = 0;
728  char *inb, *outb;
729  size_t inl, outl;
730 #endif
731 
732  if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER || inpkt->size == 0) {
733  *outpkt = inpkt;
734  return 0;
735  }
736 
737 #if CONFIG_ICONV
738  inb = inpkt->data;
739  inl = inpkt->size;
740 
741  if (inl >= INT_MAX / UTF8_MAX_BYTES - AV_INPUT_BUFFER_PADDING_SIZE) {
742  av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n");
743  return AVERROR(ERANGE);
744  }
745 
746  cd = iconv_open("UTF-8", avctx->sub_charenc);
747  av_assert0(cd != (iconv_t)-1);
748 
749  ret = av_new_packet(buf_pkt, inl * UTF8_MAX_BYTES);
750  if (ret < 0)
751  goto end;
752  ret = av_packet_copy_props(buf_pkt, inpkt);
753  if (ret < 0)
754  goto end;
755  outb = buf_pkt->data;
756  outl = buf_pkt->size;
757 
758  if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
759  iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
760  outl >= buf_pkt->size || inl != 0) {
761  ret = FFMIN(AVERROR(errno), -1);
762  av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
763  "from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
764  goto end;
765  }
766  buf_pkt->size -= outl;
767  memset(buf_pkt->data + buf_pkt->size, 0, outl);
768  *outpkt = buf_pkt;
769 
770  ret = 0;
771 end:
772  if (ret < 0)
773  av_packet_unref(buf_pkt);
774  if (cd != (iconv_t)-1)
775  iconv_close(cd);
776  return ret;
777 #else
778  av_log(avctx, AV_LOG_ERROR, "requesting subtitles recoding without iconv");
779  return AVERROR(EINVAL);
780 #endif
781 }
782 
783 static int utf8_check(const uint8_t *str)
784 {
785  const uint8_t *byte;
786  uint32_t codepoint, min;
787 
788  while (*str) {
789  byte = str;
790  GET_UTF8(codepoint, *(byte++), return 0;);
791  min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
792  1 << (5 * (byte - str) - 4);
793  if (codepoint < min || codepoint >= 0x110000 ||
794  codepoint == 0xFFFE /* BOM */ ||
795  codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
796  return 0;
797  str = byte;
798  }
799  return 1;
800 }
801 
803  int *got_sub_ptr,
804  AVPacket *avpkt)
805 {
806  int ret = 0;
807 
808  if (!avpkt->data && avpkt->size) {
809  av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
810  return AVERROR(EINVAL);
811  }
812  if (!avctx->codec)
813  return AVERROR(EINVAL);
814  if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
815  av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
816  return AVERROR(EINVAL);
817  }
818 
819  *got_sub_ptr = 0;
821 
822  if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size) {
823  AVCodecInternal *avci = avctx->internal;
824  AVPacket *pkt;
825 
826  ret = recode_subtitle(avctx, &pkt, avpkt, avci->buffer_pkt);
827  if (ret < 0)
828  return ret;
829 
830  if (avctx->pkt_timebase.num && avpkt->pts != AV_NOPTS_VALUE)
831  sub->pts = av_rescale_q(avpkt->pts,
832  avctx->pkt_timebase, AV_TIME_BASE_Q);
833  ret = avctx->codec->decode(avctx, sub, got_sub_ptr, pkt);
834  av_assert1((ret >= 0) >= !!*got_sub_ptr &&
835  !!*got_sub_ptr >= !!sub->num_rects);
836 
837  if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
838  avctx->pkt_timebase.num) {
839  AVRational ms = { 1, 1000 };
840  sub->end_display_time = av_rescale_q(avpkt->duration,
841  avctx->pkt_timebase, ms);
842  }
843 
845  sub->format = 0;
846  else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB)
847  sub->format = 1;
848 
849  for (unsigned i = 0; i < sub->num_rects; i++) {
851  sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
852  av_log(avctx, AV_LOG_ERROR,
853  "Invalid UTF-8 in decoded subtitles text; "
854  "maybe missing -sub_charenc option\n");
857  break;
858  }
859  }
860 
861  if (*got_sub_ptr)
862  avctx->frame_number++;
863 
864  if (pkt == avci->buffer_pkt) // did we recode?
866  }
867 
868  return ret;
869 }
870 
872  const enum AVPixelFormat *fmt)
873 {
874  const AVPixFmtDescriptor *desc;
875  const AVCodecHWConfig *config;
876  int i, n;
877 
878  // If a device was supplied when the codec was opened, assume that the
879  // user wants to use it.
880  if (avctx->hw_device_ctx && avctx->codec->hw_configs) {
881  AVHWDeviceContext *device_ctx =
883  for (i = 0;; i++) {
884  config = &avctx->codec->hw_configs[i]->public;
885  if (!config)
886  break;
887  if (!(config->methods &
889  continue;
890  if (device_ctx->type != config->device_type)
891  continue;
892  for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++) {
893  if (config->pix_fmt == fmt[n])
894  return fmt[n];
895  }
896  }
897  }
898  // No device or other setup, so we have to choose from things which
899  // don't any other external information.
900 
901  // If the last element of the list is a software format, choose it
902  // (this should be best software format if any exist).
903  for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++);
904  desc = av_pix_fmt_desc_get(fmt[n - 1]);
905  if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
906  return fmt[n - 1];
907 
908  // Finally, traverse the list in order and choose the first entry
909  // with no external dependencies (if there is no hardware configuration
910  // information available then this just picks the first entry).
911  for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++) {
912  for (i = 0;; i++) {
913  config = avcodec_get_hw_config(avctx->codec, i);
914  if (!config)
915  break;
916  if (config->pix_fmt == fmt[n])
917  break;
918  }
919  if (!config) {
920  // No specific config available, so the decoder must be able
921  // to handle this format without any additional setup.
922  return fmt[n];
923  }
925  // Usable with only internal setup.
926  return fmt[n];
927  }
928  }
929 
930  // Nothing is usable, give up.
931  return AV_PIX_FMT_NONE;
932 }
933 
935  enum AVHWDeviceType dev_type)
936 {
937  AVHWDeviceContext *device_ctx;
938  AVHWFramesContext *frames_ctx;
939  int ret;
940 
941  if (!avctx->hwaccel)
942  return AVERROR(ENOSYS);
943 
944  if (avctx->hw_frames_ctx)
945  return 0;
946  if (!avctx->hw_device_ctx) {
947  av_log(avctx, AV_LOG_ERROR, "A hardware frames or device context is "
948  "required for hardware accelerated decoding.\n");
949  return AVERROR(EINVAL);
950  }
951 
952  device_ctx = (AVHWDeviceContext *)avctx->hw_device_ctx->data;
953  if (device_ctx->type != dev_type) {
954  av_log(avctx, AV_LOG_ERROR, "Device type %s expected for hardware "
955  "decoding, but got %s.\n", av_hwdevice_get_type_name(dev_type),
956  av_hwdevice_get_type_name(device_ctx->type));
957  return AVERROR(EINVAL);
958  }
959 
961  avctx->hw_device_ctx,
962  avctx->hwaccel->pix_fmt,
963  &avctx->hw_frames_ctx);
964  if (ret < 0)
965  return ret;
966 
967  frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
968 
969 
970  if (frames_ctx->initial_pool_size) {
971  // We guarantee 4 base work surfaces. The function above guarantees 1
972  // (the absolute minimum), so add the missing count.
973  frames_ctx->initial_pool_size += 3;
974  }
975 
977  if (ret < 0) {
979  return ret;
980  }
981 
982  return 0;
983 }
984 
986  AVBufferRef *device_ref,
988  AVBufferRef **out_frames_ref)
989 {
990  AVBufferRef *frames_ref = NULL;
991  const AVCodecHWConfigInternal *hw_config;
992  const AVHWAccel *hwa;
993  int i, ret;
994 
995  for (i = 0;; i++) {
996  hw_config = avctx->codec->hw_configs[i];
997  if (!hw_config)
998  return AVERROR(ENOENT);
999  if (hw_config->public.pix_fmt == hw_pix_fmt)
1000  break;
1001  }
1002 
1003  hwa = hw_config->hwaccel;
1004  if (!hwa || !hwa->frame_params)
1005  return AVERROR(ENOENT);
1006 
1007  frames_ref = av_hwframe_ctx_alloc(device_ref);
1008  if (!frames_ref)
1009  return AVERROR(ENOMEM);
1010 
1011  ret = hwa->frame_params(avctx, frames_ref);
1012  if (ret >= 0) {
1013  AVHWFramesContext *frames_ctx = (AVHWFramesContext*)frames_ref->data;
1014 
1015  if (frames_ctx->initial_pool_size) {
1016  // If the user has requested that extra output surfaces be
1017  // available then add them here.
1018  if (avctx->extra_hw_frames > 0)
1019  frames_ctx->initial_pool_size += avctx->extra_hw_frames;
1020 
1021  // If frame threading is enabled then an extra surface per thread
1022  // is also required.
1023  if (avctx->active_thread_type & FF_THREAD_FRAME)
1024  frames_ctx->initial_pool_size += avctx->thread_count;
1025  }
1026 
1027  *out_frames_ref = frames_ref;
1028  } else {
1029  av_buffer_unref(&frames_ref);
1030  }
1031  return ret;
1032 }
1033 
1034 static int hwaccel_init(AVCodecContext *avctx,
1035  const AVCodecHWConfigInternal *hw_config)
1036 {
1037  const AVHWAccel *hwaccel;
1038  int err;
1039 
1040  hwaccel = hw_config->hwaccel;
1043  av_log(avctx, AV_LOG_WARNING, "Ignoring experimental hwaccel: %s\n",
1044  hwaccel->name);
1045  return AVERROR_PATCHWELCOME;
1046  }
1047 
1048  if (hwaccel->priv_data_size) {
1049  avctx->internal->hwaccel_priv_data =
1050  av_mallocz(hwaccel->priv_data_size);
1051  if (!avctx->internal->hwaccel_priv_data)
1052  return AVERROR(ENOMEM);
1053  }
1054 
1055  avctx->hwaccel = hwaccel;
1056  if (hwaccel->init) {
1057  err = hwaccel->init(avctx);
1058  if (err < 0) {
1059  av_log(avctx, AV_LOG_ERROR, "Failed setup for format %s: "
1060  "hwaccel initialisation returned error.\n",
1061  av_get_pix_fmt_name(hw_config->public.pix_fmt));
1063  avctx->hwaccel = NULL;
1064  return err;
1065  }
1066  }
1067 
1068  return 0;
1069 }
1070 
1071 static void hwaccel_uninit(AVCodecContext *avctx)
1072 {
1073  if (avctx->hwaccel && avctx->hwaccel->uninit)
1074  avctx->hwaccel->uninit(avctx);
1075 
1077 
1078  avctx->hwaccel = NULL;
1079 
1080  av_buffer_unref(&avctx->hw_frames_ctx);
1081 }
1082 
1083 int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
1084 {
1085  const AVPixFmtDescriptor *desc;
1086  enum AVPixelFormat *choices;
1087  enum AVPixelFormat ret, user_choice;
1088  const AVCodecHWConfigInternal *hw_config;
1089  const AVCodecHWConfig *config;
1090  int i, n, err;
1091 
1092  // Find end of list.
1093  for (n = 0; fmt[n] != AV_PIX_FMT_NONE; n++);
1094  // Must contain at least one entry.
1095  av_assert0(n >= 1);
1096  // If a software format is available, it must be the last entry.
1097  desc = av_pix_fmt_desc_get(fmt[n - 1]);
1098  if (desc->flags & AV_PIX_FMT_FLAG_HWACCEL) {
1099  // No software format is available.
1100  } else {
1101  avctx->sw_pix_fmt = fmt[n - 1];
1102  }
1103 
1104  choices = av_malloc_array(n + 1, sizeof(*choices));
1105  if (!choices)
1106  return AV_PIX_FMT_NONE;
1107 
1108  memcpy(choices, fmt, (n + 1) * sizeof(*choices));
1109 
1110  for (;;) {
1111  // Remove the previous hwaccel, if there was one.
1112  hwaccel_uninit(avctx);
1113 
1114  user_choice = avctx->get_format(avctx, choices);
1115  if (user_choice == AV_PIX_FMT_NONE) {
1116  // Explicitly chose nothing, give up.
1117  ret = AV_PIX_FMT_NONE;
1118  break;
1119  }
1120 
1121  desc = av_pix_fmt_desc_get(user_choice);
1122  if (!desc) {
1123  av_log(avctx, AV_LOG_ERROR, "Invalid format returned by "
1124  "get_format() callback.\n");
1125  ret = AV_PIX_FMT_NONE;
1126  break;
1127  }
1128  av_log(avctx, AV_LOG_DEBUG, "Format %s chosen by get_format().\n",
1129  desc->name);
1130 
1131  for (i = 0; i < n; i++) {
1132  if (choices[i] == user_choice)
1133  break;
1134  }
1135  if (i == n) {
1136  av_log(avctx, AV_LOG_ERROR, "Invalid return from get_format(): "
1137  "%s not in possible list.\n", desc->name);
1138  ret = AV_PIX_FMT_NONE;
1139  break;
1140  }
1141 
1142  if (avctx->codec->hw_configs) {
1143  for (i = 0;; i++) {
1144  hw_config = avctx->codec->hw_configs[i];
1145  if (!hw_config)
1146  break;
1147  if (hw_config->public.pix_fmt == user_choice)
1148  break;
1149  }
1150  } else {
1151  hw_config = NULL;
1152  }
1153 
1154  if (!hw_config) {
1155  // No config available, so no extra setup required.
1156  ret = user_choice;
1157  break;
1158  }
1159  config = &hw_config->public;
1160 
1161  if (config->methods &
1163  avctx->hw_frames_ctx) {
1164  const AVHWFramesContext *frames_ctx =
1166  if (frames_ctx->format != user_choice) {
1167  av_log(avctx, AV_LOG_ERROR, "Invalid setup for format %s: "
1168  "does not match the format of the provided frames "
1169  "context.\n", desc->name);
1170  goto try_again;
1171  }
1172  } else if (config->methods &
1174  avctx->hw_device_ctx) {
1175  const AVHWDeviceContext *device_ctx =
1177  if (device_ctx->type != config->device_type) {
1178  av_log(avctx, AV_LOG_ERROR, "Invalid setup for format %s: "
1179  "does not match the type of the provided device "
1180  "context.\n", desc->name);
1181  goto try_again;
1182  }
1183  } else if (config->methods &
1185  // Internal-only setup, no additional configuration.
1186  } else if (config->methods &
1188  // Some ad-hoc configuration we can't see and can't check.
1189  } else {
1190  av_log(avctx, AV_LOG_ERROR, "Invalid setup for format %s: "
1191  "missing configuration.\n", desc->name);
1192  goto try_again;
1193  }
1194  if (hw_config->hwaccel) {
1195  av_log(avctx, AV_LOG_DEBUG, "Format %s requires hwaccel "
1196  "initialisation.\n", desc->name);
1197  err = hwaccel_init(avctx, hw_config);
1198  if (err < 0)
1199  goto try_again;
1200  }
1201  ret = user_choice;
1202  break;
1203 
1204  try_again:
1205  av_log(avctx, AV_LOG_DEBUG, "Format %s not usable, retrying "
1206  "get_format() without it.\n", desc->name);
1207  for (i = 0; i < n; i++) {
1208  if (choices[i] == user_choice)
1209  break;
1210  }
1211  for (; i + 1 < n; i++)
1212  choices[i] = choices[i + 1];
1213  --n;
1214  }
1215 
1216  av_freep(&choices);
1217  return ret;
1218 }
1219 
1220 static void frame_pool_free(void *opaque, uint8_t *data)
1221 {
1222  FramePool *pool = (FramePool*)data;
1223  int i;
1224 
1225  for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
1226  av_buffer_pool_uninit(&pool->pools[i]);
1227 
1228  av_freep(&data);
1229 }
1230 
1232 {
1233  FramePool *pool = av_mallocz(sizeof(*pool));
1234  AVBufferRef *buf;
1235 
1236  if (!pool)
1237  return NULL;
1238 
1239  buf = av_buffer_create((uint8_t*)pool, sizeof(*pool),
1240  frame_pool_free, NULL, 0);
1241  if (!buf) {
1242  av_freep(&pool);
1243  return NULL;
1244  }
1245 
1246  return buf;
1247 }
1248 
1250 {
1251  FramePool *pool = avctx->internal->pool ?
1252  (FramePool*)avctx->internal->pool->data : NULL;
1253  AVBufferRef *pool_buf;
1254  int i, ret, ch, planes;
1255 
1256  if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
1257  int planar = av_sample_fmt_is_planar(frame->format);
1258  ch = frame->channels;
1259  planes = planar ? ch : 1;
1260  }
1261 
1262  if (pool && pool->format == frame->format) {
1263  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO &&
1264  pool->width == frame->width && pool->height == frame->height)
1265  return 0;
1266  if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && pool->planes == planes &&
1267  pool->channels == ch && frame->nb_samples == pool->samples)
1268  return 0;
1269  }
1270 
1271  pool_buf = frame_pool_alloc();
1272  if (!pool_buf)
1273  return AVERROR(ENOMEM);
1274  pool = (FramePool*)pool_buf->data;
1275 
1276  switch (avctx->codec_type) {
1277  case AVMEDIA_TYPE_VIDEO: {
1278  int linesize[4];
1279  int w = frame->width;
1280  int h = frame->height;
1281  int unaligned;
1282  ptrdiff_t linesize1[4];
1283  size_t size[4];
1284 
1285  avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align);
1286 
1287  do {
1288  // NOTE: do not align linesizes individually, this breaks e.g. assumptions
1289  // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2
1290  ret = av_image_fill_linesizes(linesize, avctx->pix_fmt, w);
1291  if (ret < 0)
1292  goto fail;
1293  // increase alignment of w for next try (rhs gives the lowest bit set in w)
1294  w += w & ~(w - 1);
1295 
1296  unaligned = 0;
1297  for (i = 0; i < 4; i++)
1298  unaligned |= linesize[i] % pool->stride_align[i];
1299  } while (unaligned);
1300 
1301  for (i = 0; i < 4; i++)
1302  linesize1[i] = linesize[i];
1303  ret = av_image_fill_plane_sizes(size, avctx->pix_fmt, h, linesize1);
1304  if (ret < 0)
1305  goto fail;
1306 
1307  for (i = 0; i < 4; i++) {
1308  pool->linesize[i] = linesize[i];
1309  if (size[i]) {
1310  if (size[i] > INT_MAX - (16 + STRIDE_ALIGN - 1)) {
1311  ret = AVERROR(EINVAL);
1312  goto fail;
1313  }
1314  pool->pools[i] = av_buffer_pool_init(size[i] + 16 + STRIDE_ALIGN - 1,
1315  CONFIG_MEMORY_POISONING ?
1316  NULL :
1318  if (!pool->pools[i]) {
1319  ret = AVERROR(ENOMEM);
1320  goto fail;
1321  }
1322  }
1323  }
1324  pool->format = frame->format;
1325  pool->width = frame->width;
1326  pool->height = frame->height;
1327 
1328  break;
1329  }
1330  case AVMEDIA_TYPE_AUDIO: {
1331  ret = av_samples_get_buffer_size(&pool->linesize[0], ch,
1332  frame->nb_samples, frame->format, 0);
1333  if (ret < 0)
1334  goto fail;
1335 
1336  pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL);
1337  if (!pool->pools[0]) {
1338  ret = AVERROR(ENOMEM);
1339  goto fail;
1340  }
1341 
1342  pool->format = frame->format;
1343  pool->planes = planes;
1344  pool->channels = ch;
1345  pool->samples = frame->nb_samples;
1346  break;
1347  }
1348  default: av_assert0(0);
1349  }
1350 
1351  av_buffer_unref(&avctx->internal->pool);
1352  avctx->internal->pool = pool_buf;
1353 
1354  return 0;
1355 fail:
1356  av_buffer_unref(&pool_buf);
1357  return ret;
1358 }
1359 
1361 {
1362  FramePool *pool = (FramePool*)avctx->internal->pool->data;
1363  int planes = pool->planes;
1364  int i;
1365 
1366  frame->linesize[0] = pool->linesize[0];
1367 
1369  frame->extended_data = av_mallocz_array(planes, sizeof(*frame->extended_data));
1370  frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
1371  frame->extended_buf = av_mallocz_array(frame->nb_extended_buf,
1372  sizeof(*frame->extended_buf));
1373  if (!frame->extended_data || !frame->extended_buf) {
1374  av_freep(&frame->extended_data);
1375  av_freep(&frame->extended_buf);
1376  return AVERROR(ENOMEM);
1377  }
1378  } else {
1379  frame->extended_data = frame->data;
1380  av_assert0(frame->nb_extended_buf == 0);
1381  }
1382 
1383  for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
1384  frame->buf[i] = av_buffer_pool_get(pool->pools[0]);
1385  if (!frame->buf[i])
1386  goto fail;
1387  frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
1388  }
1389  for (i = 0; i < frame->nb_extended_buf; i++) {
1390  frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]);
1391  if (!frame->extended_buf[i])
1392  goto fail;
1393  frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
1394  }
1395 
1396  if (avctx->debug & FF_DEBUG_BUFFERS)
1397  av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame);
1398 
1399  return 0;
1400 fail:
1402  return AVERROR(ENOMEM);
1403 }
1404 
1406 {
1407  FramePool *pool = (FramePool*)s->internal->pool->data;
1409  int i;
1410 
1411  if (pic->data[0] || pic->data[1] || pic->data[2] || pic->data[3]) {
1412  av_log(s, AV_LOG_ERROR, "pic->data[*]!=NULL in avcodec_default_get_buffer\n");
1413  return -1;
1414  }
1415 
1416  if (!desc) {
1418  "Unable to get pixel format descriptor for format %s\n",
1419  av_get_pix_fmt_name(pic->format));
1420  return AVERROR(EINVAL);
1421  }
1422 
1423  memset(pic->data, 0, sizeof(pic->data));
1424  pic->extended_data = pic->data;
1425 
1426  for (i = 0; i < 4 && pool->pools[i]; i++) {
1427  pic->linesize[i] = pool->linesize[i];
1428 
1429  pic->buf[i] = av_buffer_pool_get(pool->pools[i]);
1430  if (!pic->buf[i])
1431  goto fail;
1432 
1433  pic->data[i] = pic->buf[i]->data;
1434  }
1435  for (; i < AV_NUM_DATA_POINTERS; i++) {
1436  pic->data[i] = NULL;
1437  pic->linesize[i] = 0;
1438  }
1439 
1440  if (s->debug & FF_DEBUG_BUFFERS)
1441  av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic);
1442 
1443  return 0;
1444 fail:
1445  av_frame_unref(pic);
1446  return AVERROR(ENOMEM);
1447 }
1448 
1450 {
1451  int ret;
1452 
1453  if (avctx->hw_frames_ctx) {
1455  frame->width = avctx->coded_width;
1456  frame->height = avctx->coded_height;
1457  return ret;
1458  }
1459 
1460  if ((ret = update_frame_pool(avctx, frame)) < 0)
1461  return ret;
1462 
1463  switch (avctx->codec_type) {
1464  case AVMEDIA_TYPE_VIDEO:
1465  return video_get_buffer(avctx, frame);
1466  case AVMEDIA_TYPE_AUDIO:
1467  return audio_get_buffer(avctx, frame);
1468  default:
1469  return -1;
1470  }
1471 }
1472 
1474 {
1475  size_t size;
1476  const uint8_t *side_metadata;
1477 
1478  AVDictionary **frame_md = &frame->metadata;
1479 
1480  side_metadata = av_packet_get_side_data(avpkt,
1482  return av_packet_unpack_dictionary(side_metadata, size, frame_md);
1483 }
1484 
1486 {
1487  AVPacket *pkt = avctx->internal->last_pkt_props;
1488  static const struct {
1489  enum AVPacketSideDataType packet;
1491  } sd[] = {
1503  };
1504 
1506  frame->pts = pkt->pts;
1507  frame->pkt_pos = pkt->pos;
1508  frame->pkt_duration = pkt->duration;
1509  frame->pkt_size = pkt->size;
1510 
1511  for (int i = 0; i < FF_ARRAY_ELEMS(sd); i++) {
1512  size_t size;
1513  uint8_t *packet_sd = av_packet_get_side_data(pkt, sd[i].packet, &size);
1514  if (packet_sd) {
1516  sd[i].frame,
1517  size);
1518  if (!frame_sd)
1519  return AVERROR(ENOMEM);
1520 
1521  memcpy(frame_sd->data, packet_sd, size);
1522  }
1523  }
1525 
1526  if (pkt->flags & AV_PKT_FLAG_DISCARD) {
1527  frame->flags |= AV_FRAME_FLAG_DISCARD;
1528  } else {
1529  frame->flags = (frame->flags & ~AV_FRAME_FLAG_DISCARD);
1530  }
1531  }
1532  frame->reordered_opaque = avctx->reordered_opaque;
1533 
1534  if (frame->color_primaries == AVCOL_PRI_UNSPECIFIED)
1535  frame->color_primaries = avctx->color_primaries;
1536  if (frame->color_trc == AVCOL_TRC_UNSPECIFIED)
1537  frame->color_trc = avctx->color_trc;
1538  if (frame->colorspace == AVCOL_SPC_UNSPECIFIED)
1539  frame->colorspace = avctx->colorspace;
1540  if (frame->color_range == AVCOL_RANGE_UNSPECIFIED)
1541  frame->color_range = avctx->color_range;
1542  if (frame->chroma_location == AVCHROMA_LOC_UNSPECIFIED)
1543  frame->chroma_location = avctx->chroma_sample_location;
1544 
1545  switch (avctx->codec->type) {
1546  case AVMEDIA_TYPE_VIDEO:
1547  frame->format = avctx->pix_fmt;
1548  if (!frame->sample_aspect_ratio.num)
1549  frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
1550 
1551  if (frame->width && frame->height &&
1552  av_image_check_sar(frame->width, frame->height,
1553  frame->sample_aspect_ratio) < 0) {
1554  av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
1555  frame->sample_aspect_ratio.num,
1556  frame->sample_aspect_ratio.den);
1557  frame->sample_aspect_ratio = (AVRational){ 0, 1 };
1558  }
1559 
1560  break;
1561  case AVMEDIA_TYPE_AUDIO:
1562  if (!frame->sample_rate)
1563  frame->sample_rate = avctx->sample_rate;
1564  if (frame->format < 0)
1565  frame->format = avctx->sample_fmt;
1566  if (!frame->channel_layout) {
1567  if (avctx->channel_layout) {
1569  avctx->channels) {
1570  av_log(avctx, AV_LOG_ERROR, "Inconsistent channel "
1571  "configuration.\n");
1572  return AVERROR(EINVAL);
1573  }
1574 
1575  frame->channel_layout = avctx->channel_layout;
1576  } else {
1577  if (avctx->channels > FF_SANE_NB_CHANNELS) {
1578  av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n",
1579  avctx->channels);
1580  return AVERROR(ENOSYS);
1581  }
1582  }
1583  }
1584  frame->channels = avctx->channels;
1585  break;
1586  }
1587  return 0;
1588 }
1589 
1591 {
1592  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1593  int i;
1594  int num_planes = av_pix_fmt_count_planes(frame->format);
1596  int flags = desc ? desc->flags : 0;
1597  if (num_planes == 1 && (flags & AV_PIX_FMT_FLAG_PAL))
1598  num_planes = 2;
1599  for (i = 0; i < num_planes; i++) {
1600  av_assert0(frame->data[i]);
1601  }
1602  // For formats without data like hwaccel allow unused pointers to be non-NULL.
1603  for (i = num_planes; num_planes > 0 && i < FF_ARRAY_ELEMS(frame->data); i++) {
1604  if (frame->data[i])
1605  av_log(avctx, AV_LOG_ERROR, "Buffer returned by get_buffer2() did not zero unused plane pointers\n");
1606  frame->data[i] = NULL;
1607  }
1608  }
1609 }
1610 
1611 static void decode_data_free(void *opaque, uint8_t *data)
1612 {
1614 
1615  if (fdd->post_process_opaque_free)
1617 
1618  if (fdd->hwaccel_priv_free)
1619  fdd->hwaccel_priv_free(fdd->hwaccel_priv);
1620 
1621  av_freep(&fdd);
1622 }
1623 
1625 {
1626  AVBufferRef *fdd_buf;
1627  FrameDecodeData *fdd;
1628 
1629  av_assert1(!frame->private_ref);
1630  av_buffer_unref(&frame->private_ref);
1631 
1632  fdd = av_mallocz(sizeof(*fdd));
1633  if (!fdd)
1634  return AVERROR(ENOMEM);
1635 
1636  fdd_buf = av_buffer_create((uint8_t*)fdd, sizeof(*fdd), decode_data_free,
1638  if (!fdd_buf) {
1639  av_freep(&fdd);
1640  return AVERROR(ENOMEM);
1641  }
1642 
1643  frame->private_ref = fdd_buf;
1644 
1645  return 0;
1646 }
1647 
1649 {
1650  const AVHWAccel *hwaccel = avctx->hwaccel;
1651  int override_dimensions = 1;
1652  int ret;
1653 
1654  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
1655  if ((unsigned)avctx->width > INT_MAX - STRIDE_ALIGN ||
1656  (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) {
1657  av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
1658  ret = AVERROR(EINVAL);
1659  goto fail;
1660  }
1661 
1662  if (frame->width <= 0 || frame->height <= 0) {
1663  frame->width = FFMAX(avctx->width, AV_CEIL_RSHIFT(avctx->coded_width, avctx->lowres));
1664  frame->height = FFMAX(avctx->height, AV_CEIL_RSHIFT(avctx->coded_height, avctx->lowres));
1665  override_dimensions = 0;
1666  }
1667 
1668  if (frame->data[0] || frame->data[1] || frame->data[2] || frame->data[3]) {
1669  av_log(avctx, AV_LOG_ERROR, "pic->data[*]!=NULL in get_buffer_internal\n");
1670  ret = AVERROR(EINVAL);
1671  goto fail;
1672  }
1673  } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
1674  if (frame->nb_samples * (int64_t)avctx->channels > avctx->max_samples) {
1675  av_log(avctx, AV_LOG_ERROR, "samples per frame %d, exceeds max_samples %"PRId64"\n", frame->nb_samples, avctx->max_samples);
1676  ret = AVERROR(EINVAL);
1677  goto fail;
1678  }
1679  }
1680  ret = ff_decode_frame_props(avctx, frame);
1681  if (ret < 0)
1682  goto fail;
1683 
1684  if (hwaccel) {
1685  if (hwaccel->alloc_frame) {
1686  ret = hwaccel->alloc_frame(avctx, frame);
1687  goto end;
1688  }
1689  } else
1690  avctx->sw_pix_fmt = avctx->pix_fmt;
1691 
1692  ret = avctx->get_buffer2(avctx, frame, flags);
1693  if (ret < 0)
1694  goto fail;
1695 
1697 
1699  if (ret < 0)
1700  goto fail;
1701 
1702 end:
1703  if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions &&
1705  frame->width = avctx->width;
1706  frame->height = avctx->height;
1707  }
1708 
1709 fail:
1710  if (ret < 0) {
1711  av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
1713  }
1714 
1715  return ret;
1716 }
1717 
1719 {
1720  AVFrame *tmp;
1721  int ret;
1722 
1724 
1725  if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
1726  av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
1727  frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt));
1729  }
1730 
1731  if (!frame->data[0])
1732  return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF);
1733 
1735  return ff_decode_frame_props(avctx, frame);
1736 
1737  tmp = av_frame_alloc();
1738  if (!tmp)
1739  return AVERROR(ENOMEM);
1740 
1742 
1744  if (ret < 0) {
1745  av_frame_free(&tmp);
1746  return ret;
1747  }
1748 
1750  av_frame_free(&tmp);
1751 
1752  return 0;
1753 }
1754 
1756 {
1757  int ret = reget_buffer_internal(avctx, frame, flags);
1758  if (ret < 0)
1759  av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
1760  return ret;
1761 }
1762 
1764 {
1765  int ret = 0;
1766 
1767  /* if the decoder init function was already called previously,
1768  * free the already allocated subtitle_header before overwriting it */
1769  av_freep(&avctx->subtitle_header);
1770 
1771 #if FF_API_THREAD_SAFE_CALLBACKS
1773  if ((avctx->thread_type & FF_THREAD_FRAME) &&
1775  !avctx->thread_safe_callbacks) {
1776  av_log(avctx, AV_LOG_WARNING, "Requested frame threading with a "
1777  "custom get_buffer2() implementation which is not marked as "
1778  "thread safe. This is not supported anymore, make your "
1779  "callback thread-safe.\n");
1780  }
1782 #endif
1783 
1784  if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && avctx->channels == 0 &&
1786  av_log(avctx, AV_LOG_ERROR, "Decoder requires channel count but channels not set\n");
1787  return AVERROR(EINVAL);
1788  }
1789  if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
1790  av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
1791  avctx->codec->max_lowres);
1792  avctx->lowres = avctx->codec->max_lowres;
1793  }
1794  if (avctx->sub_charenc) {
1795  if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
1796  av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
1797  "supported with subtitles codecs\n");
1798  return AVERROR(EINVAL);
1799  } else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
1800  av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
1801  "subtitles character encoding will be ignored\n",
1802  avctx->codec_descriptor->name);
1804  } else {
1805  /* input character encoding is set for a text based subtitle
1806  * codec at this point */
1809 
1811 #if CONFIG_ICONV
1812  iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
1813  if (cd == (iconv_t)-1) {
1814  ret = AVERROR(errno);
1815  av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
1816  "with input character encoding \"%s\"\n", avctx->sub_charenc);
1817  return ret;
1818  }
1819  iconv_close(cd);
1820 #else
1821  av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
1822  "conversion needs a libavcodec built with iconv support "
1823  "for this codec\n");
1824  return AVERROR(ENOSYS);
1825 #endif
1826  }
1827  }
1828  }
1829 
1831  avctx->pts_correction_num_faulty_dts = 0;
1832  avctx->pts_correction_last_pts =
1833  avctx->pts_correction_last_dts = INT64_MIN;
1834 
1835  if ( !CONFIG_GRAY && avctx->flags & AV_CODEC_FLAG_GRAY
1837  av_log(avctx, AV_LOG_WARNING,
1838  "gray decoding requested but not enabled at configuration time\n");
1839  if (avctx->flags2 & AV_CODEC_FLAG2_EXPORT_MVS) {
1841  }
1842 
1843  ret = decode_bsfs_init(avctx);
1844  if (ret < 0)
1845  return ret;
1846 
1847  return 0;
1848 }
1849 
1850 int ff_copy_palette(void *dst, const AVPacket *src, void *logctx)
1851 {
1852  size_t size;
1853  const void *pal = av_packet_get_side_data(src, AV_PKT_DATA_PALETTE, &size);
1854 
1855  if (pal && size == AVPALETTE_SIZE) {
1856  memcpy(dst, pal, AVPALETTE_SIZE);
1857  return 1;
1858  } else if (pal) {
1859  av_log(logctx, AV_LOG_ERROR,
1860  "Palette size %"SIZE_SPECIFIER" is wrong\n", size);
1861  }
1862  return 0;
1863 }
frame_pool_free
static void frame_pool_free(void *opaque, uint8_t *data)
Definition: decode.c:1220
AVSubtitle
Definition: avcodec.h:2283
AVCodecInternal::initial_sample_rate
int initial_sample_rate
Definition: internal.h:208
hwconfig.h
av_packet_unref
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:404
AVCodecContext::hwaccel
const struct AVHWAccel * hwaccel
Hardware accelerator in use.
Definition: avcodec.h:1355
FF_ENABLE_DEPRECATION_WARNINGS
#define FF_ENABLE_DEPRECATION_WARNINGS
Definition: internal.h:83
AVMEDIA_TYPE_SUBTITLE
@ AVMEDIA_TYPE_SUBTITLE
Definition: avutil.h:204
av_buffer_pool_init
AVBufferPool * av_buffer_pool_init(size_t size, AVBufferRef *(*alloc)(size_t size))
Allocate and initialize a buffer pool.
Definition: buffer.c:266
AVBSFContext::par_in
AVCodecParameters * par_in
Parameters of the input stream.
Definition: bsf.h:77
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:186
ff_decode_get_packet
int ff_decode_get_packet(AVCodecContext *avctx, AVPacket *pkt)
Called by decoders to get the next packet for decoding.
Definition: decode.c:224
hw_pix_fmt
static enum AVPixelFormat hw_pix_fmt
Definition: hw_decode.c:46
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
FF_CODEC_CAP_SETS_PKT_DTS
#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:57
AVERROR
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later. That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another. Frame references ownership and permissions
opt.h
AVCodecContext::get_format
enum AVPixelFormat(* get_format)(struct AVCodecContext *s, const enum AVPixelFormat *fmt)
Callback to negotiate the pixel format.
Definition: avcodec.h:643
AV_WL32
#define AV_WL32(p, v)
Definition: intreadwrite.h:426
AVCodecContext::channel_layout
uint64_t channel_layout
Audio channel layout.
Definition: avcodec.h:1039
AVCodecContext::colorspace
enum AVColorSpace colorspace
YUV colorspace type.
Definition: avcodec.h:956
av_fifo_generic_write
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
ff_get_format
int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt)
Select the (possibly hardware accelerated) pixel format.
Definition: decode.c:1083
apply_cropping
static int apply_cropping(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:612
FF_COMPLIANCE_EXPERIMENTAL
#define FF_COMPLIANCE_EXPERIMENTAL
Allow nonstandardized experimental things.
Definition: avcodec.h:1281
AVCodecContext::sample_rate
int sample_rate
samples per second
Definition: avcodec.h:988
av_frame_new_side_data
AVFrameSideData * av_frame_new_side_data(AVFrame *frame, enum AVFrameSideDataType type, size_t size)
Add a new side data to a frame.
Definition: frame.c:605
AVBufferPool
The buffer pool.
Definition: buffer_internal.h:78
AV_PKT_DATA_PARAM_CHANGE
@ AV_PKT_DATA_PARAM_CHANGE
An AV_PKT_DATA_PARAM_CHANGE side data packet is laid out as follows:
Definition: packet.h:72
sub
static float sub(float src0, float src1)
Definition: dnn_backend_native_layer_mathbinary.c:31
FramePool::planes
int planes
Definition: decode.c:64
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2540
AVERROR_EOF
#define AVERROR_EOF
End of file.
Definition: error.h:55
AVBufferRef::data
uint8_t * data
The data buffer.
Definition: buffer.h:90
AV_HWACCEL_CODEC_CAP_EXPERIMENTAL
#define AV_HWACCEL_CODEC_CAP_EXPERIMENTAL
HWAccel is experimental and is thus avoided in favor of non experimental codecs.
Definition: avcodec.h:2199
AV_FRAME_DATA_A53_CC
@ AV_FRAME_DATA_A53_CC
ATSC A53 Part 4 Closed Captions.
Definition: frame.h:58
av_fifo_grow
int av_fifo_grow(AVFifoBuffer *f, unsigned int size)
Enlarge an AVFifoBuffer.
Definition: fifo.c:107
avcodec_parameters_from_context
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
AV_PKT_FLAG_DISCARD
#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:411
AVHWFramesContext::format
enum AVPixelFormat format
The pixel format identifying the underlying HW surface type.
Definition: hwcontext.h:209
AVCodecInternal::skip_samples
int skip_samples
Number of audio samples to skip at the start of the next decoded frame.
Definition: internal.h:178
AVCodecContext::err_recognition
int err_recognition
Error recognition; may misdetect some more or less valid parts as errors.
Definition: avcodec.h:1320
AV_CODEC_FLAG_UNALIGNED
#define AV_CODEC_FLAG_UNALIGNED
Allow decoders to produce frames with data planes that are not aligned to CPU requirements (e....
Definition: avcodec.h:206
AV_TIME_BASE_Q
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
Definition: avutil.h:260
AVCodecDescriptor::name
const char * name
Name of the codec described by this descriptor.
Definition: codec_desc.h:46
AV_WL8
#define AV_WL8(p, d)
Definition: intreadwrite.h:399
decode_simple_receive_frame
static int decode_simple_receive_frame(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:509
AV_FRAME_DATA_S12M_TIMECODE
@ AV_FRAME_DATA_S12M_TIMECODE
Timecode which conforms to SMPTE ST 12-1.
Definition: frame.h:151
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:112
av_bsf_init
int av_bsf_init(AVBSFContext *ctx)
Prepare the filter for use, after all the parameters and options have been set.
Definition: bsf.c:145
FrameDecodeData
This struct stores per-frame lavc-internal data and is attached to it via private_ref.
Definition: decode.h:34
av_hwframe_ctx_init
int av_hwframe_ctx_init(AVBufferRef *ref)
Finalize the context before use.
Definition: hwcontext.c:333
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:303
tmp
static uint8_t tmp[11]
Definition: aes_ctr.c:26
FramePool::pools
AVBufferPool * pools[4]
Pools for each data plane.
Definition: decode.c:55
AVCodecContext::color_trc
enum AVColorTransferCharacteristic color_trc
Color Transfer Characteristic.
Definition: avcodec.h:949
AVCodec::capabilities
int capabilities
Codec capabilities.
Definition: codec.h:216
w
uint8_t w
Definition: llviddspenc.c:38
avcodec_decode_subtitle2
int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub, int *got_sub_ptr, AVPacket *avpkt)
Decode a subtitle message.
Definition: decode.c:802
av_hwframe_ctx_alloc
AVBufferRef * av_hwframe_ctx_alloc(AVBufferRef *device_ref_in)
Allocate an AVHWFramesContext tied to a given device context.
Definition: hwcontext.c:247
internal.h
AVPacket::data
uint8_t * data
Definition: packet.h:373
AVHWAccel::capabilities
int capabilities
Hardware accelerated codec capabilities.
Definition: avcodec.h:2066
AVCOL_TRC_UNSPECIFIED
@ AVCOL_TRC_UNSPECIFIED
Definition: pixfmt.h:476
AV_PKT_DATA_PALETTE
@ AV_PKT_DATA_PALETTE
An AV_PKT_DATA_PALETTE side data packet contains exactly AVPALETTE_SIZE bytes worth of palette.
Definition: packet.h:46
data
const char data[16]
Definition: mxf.c:143
AVHWAccel::init
int(* init)(AVCodecContext *avctx)
Initialize the hwaccel private data.
Definition: avcodec.h:2163
AVCodecContext::subtitle_header
uint8_t * subtitle_header
Header containing style information for text subtitles.
Definition: avcodec.h:1679
AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE
@ AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE
Definition: packet.h:428
av_mallocz_array
void * av_mallocz_array(size_t nmemb, size_t size)
Definition: mem.c:196
FrameDecodeData::hwaccel_priv_free
void(* hwaccel_priv_free)(void *priv)
Definition: decode.h:53
AV_FRAME_DATA_DISPLAYMATRIX
@ AV_FRAME_DATA_DISPLAYMATRIX
This side data contains a 3x3 transformation matrix describing an affine transformation that needs to...
Definition: frame.h:84
AVPacket::duration
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: packet.h:391
FramePool::channels
int channels
Definition: decode.c:65
FramePool::height
int height
Definition: decode.c:61
FF_SUB_CHARENC_MODE_PRE_DECODER
#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:1755
AVDictionary
Definition: dict.c:30
avcodec_default_get_format
enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *avctx, const enum AVPixelFormat *fmt)
Definition: decode.c:871
FramePool::stride_align
int stride_align[AV_NUM_DATA_POINTERS]
Definition: decode.c:62
AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT
@ AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT
Definition: packet.h:427
avcodec_is_open
int avcodec_is_open(AVCodecContext *s)
Definition: avcodec.c:715
av_fifo_generic_read
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
AV_PKT_DATA_SPHERICAL
@ AV_PKT_DATA_SPHERICAL
This side data should be associated with a video stream and corresponds to the AVSphericalMapping str...
Definition: packet.h:228
frame_pool_alloc
static AVBufferRef * frame_pool_alloc(void)
Definition: decode.c:1231
AVFrame::buf
AVBufferRef * buf[AV_NUM_DATA_POINTERS]
AVBuffer references backing the data for this frame.
Definition: frame.h:477
AV_RL8
#define AV_RL8(x)
Definition: intreadwrite.h:398
FF_SUB_CHARENC_MODE_AUTOMATIC
#define FF_SUB_CHARENC_MODE_AUTOMATIC
libavcodec will select the mode itself
Definition: avcodec.h:1754
tf_sess_config.config
config
Definition: tf_sess_config.py:33
thread.h
AVCodecInternal::pool
AVBufferRef * pool
Definition: internal.h:145
av_frame_apply_cropping
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:767
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:317
AVCodecInternal::initial_channel_layout
uint64_t initial_channel_layout
Definition: internal.h:210
AVCodecContext::framerate
AVRational framerate
Definition: avcodec.h:1706
AVCodec::max_lowres
uint8_t max_lowres
maximum value for lowres supported by the decoder
Definition: codec.h:222
av_pix_fmt_count_planes
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2580
AVHWAccel
Definition: avcodec.h:2033
finish
static void finish(void)
Definition: movenc.c:342
bsf.h
AVCodecContext::codec
const struct AVCodec * codec
Definition: avcodec.h:388
STRIDE_ALIGN
#define STRIDE_ALIGN
Definition: internal.h:119
fail
#define fail()
Definition: checkasm.h:136
AVCodecInternal::showed_multi_packet_warning
int showed_multi_packet_warning
Definition: internal.h:197
AVCodecContext::thread_count
int thread_count
thread count is used to decide how many independent tasks should be passed to execute()
Definition: avcodec.h:1436
AV_PIX_FMT_FLAG_HWACCEL
#define AV_PIX_FMT_FLAG_HWACCEL
Pixel format is an HW accelerated format.
Definition: pixdesc.h:128
AVCodec::bsfs
const char * bsfs
Decoding only, a comma-separated list of bitstream filters to apply to packets before decoding.
Definition: codec.h:336
FF_SUB_CHARENC_MODE_DO_NOTHING
#define FF_SUB_CHARENC_MODE_DO_NOTHING
do nothing (demuxer outputs a stream supposed to be already in UTF-8, or the codec is bitmap for inst...
Definition: avcodec.h:1753
AVCodecContext::flags
int flags
AV_CODEC_FLAG_*.
Definition: avcodec.h:459
val
static double val(void *priv, double ch)
Definition: aeval.c:75
FrameDecodeData::post_process_opaque_free
void(* post_process_opaque_free)(void *opaque)
Definition: decode.h:47
pts
static int64_t pts
Definition: transcode_aac.c:653
add_metadata_from_side_data
static int add_metadata_from_side_data(const AVPacket *avpkt, AVFrame *frame)
Definition: decode.c:1473
AVCodecContext::coded_height
int coded_height
Definition: avcodec.h:567
AV_PKT_DATA_DISPLAYMATRIX
@ AV_PKT_DATA_DISPLAYMATRIX
This side data contains a 3x3 transformation matrix describing an affine transformation that needs to...
Definition: packet.h:108
guess_correct_pts
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:264
AVCodecContext::max_samples
int64_t max_samples
The number of samples per frame to maximally accept.
Definition: avcodec.h:1968
AVRational::num
int num
Numerator.
Definition: rational.h:59
AVFrameSideDataType
AVFrameSideDataType
Definition: frame.h:48
AVHWAccel::priv_data_size
int priv_data_size
Size of the private data to allocate in AVCodecInternal.hwaccel_priv_data.
Definition: avcodec.h:2177
av_image_check_size2
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:289
avsubtitle_free
void avsubtitle_free(AVSubtitle *sub)
Free all allocated data in the given subtitle struct.
Definition: avcodec.c:429
AVHWDeviceContext
This struct aggregates all the (hardware/vendor-specific) "high-level" state, i.e.
Definition: hwcontext.h:61
av_frame_alloc
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
Definition: frame.c:99
AV_PKT_DATA_STRINGS_METADATA
@ AV_PKT_DATA_STRINGS_METADATA
A list of zero terminated key/value strings.
Definition: packet.h:172
AV_PKT_DATA_REPLAYGAIN
@ AV_PKT_DATA_REPLAYGAIN
This side data should be associated with an audio stream and contains ReplayGain information in form ...
Definition: packet.h:99
AVCodecContext::get_buffer2
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:1143
GET_UTF8
#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
AV_CODEC_FLAG_DROPCHANGED
#define AV_CODEC_FLAG_DROPCHANGED
Don't output frames whose parameters differ from first decoded frame in stream.
Definition: avcodec.h:227
planes
static const struct @318 planes[]
avassert.h
AVCodecContext::color_primaries
enum AVColorPrimaries color_primaries
Chromaticity coordinates of the source primaries.
Definition: avcodec.h:942
pkt
AVPacket * pkt
Definition: movenc.c:59
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
av_fifo_space
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
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen.c:29
AVCodecContext::pts_correction_num_faulty_pts
int64_t pts_correction_num_faulty_pts
Current statistics for PTS correction.
Definition: avcodec.h:1734
AV_CODEC_HW_CONFIG_METHOD_HW_FRAMES_CTX
@ AV_CODEC_HW_CONFIG_METHOD_HW_FRAMES_CTX
The codec supports this format via the hw_frames_ctx interface.
Definition: codec.h:435
hwaccel_uninit
static void hwaccel_uninit(AVCodecContext *avctx)
Definition: decode.c:1071
AVHWAccel::alloc_frame
int(* alloc_frame)(AVCodecContext *avctx, AVFrame *frame)
Allocate a custom buffer.
Definition: avcodec.h:2079
copy_packet_props
static int copy_packet_props(AVPacket *dst, const AVPacket *src)
Definition: decode.c:150
AV_PKT_DATA_AUDIO_SERVICE_TYPE
@ 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_buffer_pool_get
AVBufferRef * av_buffer_pool_get(AVBufferPool *pool)
Allocate a new AVBuffer, reusing an old buffer from the pool when available.
Definition: buffer.c:373
AVCodecContext::has_b_frames
int has_b_frames
Size of the frame reordering buffer in the decoder.
Definition: avcodec.h:675
AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS
@ AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS
Definition: packet.h:429
av_image_fill_linesizes
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
s
#define s(width, name)
Definition: cbs_vp9.c:257
get_subtitle_defaults
static void get_subtitle_defaults(AVSubtitle *sub)
Definition: decode.c:715
FrameDecodeData::post_process_opaque
void * post_process_opaque
Definition: decode.h:46
av_new_packet
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
Definition: avpacket.c:94
validate_avframe_allocation
static void validate_avframe_allocation(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:1590
AV_PKT_DATA_STEREO3D
@ 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
AVCodecInternal::buffer_pkt
AVPacket * buffer_pkt
buffers for using new encode/decode API through legacy API
Definition: internal.h:193
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
AV_BUFFER_FLAG_READONLY
#define AV_BUFFER_FLAG_READONLY
Always treat the buffer as read-only, even when it has only one reference.
Definition: buffer.h:114
AV_PKT_DATA_MASTERING_DISPLAY_METADATA
@ AV_PKT_DATA_MASTERING_DISPLAY_METADATA
Mastering display metadata (based on SMPTE-2086:2014).
Definition: packet.h:222
AVHWAccel::uninit
int(* uninit)(AVCodecContext *avctx)
Uninitialize the hwaccel private data.
Definition: avcodec.h:2171
AV_GET_BUFFER_FLAG_REF
#define AV_GET_BUFFER_FLAG_REF
The decoder will keep a reference to the frame and may reuse it later.
Definition: avcodec.h:357
AVMEDIA_TYPE_AUDIO
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
AVERROR_INPUT_CHANGED
#define AVERROR_INPUT_CHANGED
Input changed between calls. Reconfiguration is required. (can be OR-ed with AVERROR_OUTPUT_CHANGED)
Definition: error.h:73
AV_FRAME_DATA_AUDIO_SERVICE_TYPE
@ 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
avcodec_receive_frame
int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
Return decoded output data from a decoder.
Definition: decode.c:639
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
AVHWDeviceType
AVHWDeviceType
Definition: hwcontext.h:27
av_sample_fmt_is_planar
int av_sample_fmt_is_planar(enum AVSampleFormat sample_fmt)
Check if the sample format is planar.
Definition: samplefmt.c:112
AVCodecDescriptor::type
enum AVMediaType type
Definition: codec_desc.h:40
AVCodecContext::thread_type
int thread_type
Which multithreading methods to use.
Definition: avcodec.h:1446
AV_PKT_DATA_ICC_PROFILE
@ 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_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:201
ctx
AVFormatContext * ctx
Definition: movenc.c:48
decode.h
AVBSFContext::time_base_in
AVRational time_base_in
The timebase used for the timestamps of the input packets.
Definition: bsf.h:89
AV_PKT_DATA_DYNAMIC_HDR10_PLUS
@ AV_PKT_DATA_DYNAMIC_HDR10_PLUS
HDR10+ dynamic metadata associated with a video frame.
Definition: packet.h:299
av_rescale_q
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
Definition: mathematics.c:141
AVCodecHWConfig::pix_fmt
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:463
avcodec_align_dimensions2
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:136
FramePool::format
int format
Definition: decode.c:60
AVCodecContext::max_pixels
int64_t max_pixels
The number of pixels per image to maximally accept.
Definition: avcodec.h:1880
av_hwdevice_get_type_name
const char * av_hwdevice_get_type_name(enum AVHWDeviceType type)
Get the string name of an AVHWDeviceType.
Definition: hwcontext.c:92
AVCodecInternal::ds
DecodeSimpleContext ds
Definition: internal.h:149
AVCOL_PRI_UNSPECIFIED
@ AVCOL_PRI_UNSPECIFIED
Definition: pixfmt.h:451
decode_data_free
static void decode_data_free(void *opaque, uint8_t *data)
Definition: decode.c:1611
ff_decode_get_hw_frames_ctx
int ff_decode_get_hw_frames_ctx(AVCodecContext *avctx, enum AVHWDeviceType dev_type)
Make sure avctx.hw_frames_ctx is set.
Definition: decode.c:934
AVCodecDescriptor::props
int props
Codec properties, a combination of AV_CODEC_PROP_* flags.
Definition: codec_desc.h:54
if
if(ret)
Definition: filter_design.txt:179
AVCodecInternal::changed_frames_dropped
int changed_frames_dropped
Definition: internal.h:205
AVCodecContext::sub_charenc
char * sub_charenc
DTS of the last frame.
Definition: avcodec.h:1744
AV_CODEC_FLAG2_SKIP_MANUAL
#define AV_CODEC_FLAG2_SKIP_MANUAL
Do not skip samples and export skip information as frame side data.
Definition: avcodec.h:319
FramePool::width
int width
Definition: decode.c:61
utf8_check
static int utf8_check(const uint8_t *str)
Definition: decode.c:783
AV_FRAME_DATA_SPHERICAL
@ AV_FRAME_DATA_SPHERICAL
The data represents the AVSphericalMapping structure defined in libavutil/spherical....
Definition: frame.h:130
NULL
#define NULL
Definition: coverity.c:32
AVERROR_PATCHWELCOME
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
AVCodecContext::apply_cropping
int apply_cropping
Video decoding only.
Definition: avcodec.h:1938
AVCodecContext::color_range
enum AVColorRange color_range
MPEG vs JPEG YUV range.
Definition: avcodec.h:963
av_buffer_unref
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
av_bsf_list_parse_str
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:520
AVCodec::type
enum AVMediaType type
Definition: codec.h:210
av_image_fill_plane_sizes
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
AVRational
Rational number (pair of numerator and denominator).
Definition: rational.h:58
AVCodecContext::internal
struct AVCodecInternal * internal
Private context used for internal data.
Definition: avcodec.h:414
audio_get_buffer
static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:1360
AVPALETTE_SIZE
#define AVPALETTE_SIZE
Definition: pixfmt.h:32
AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX
@ AV_CODEC_HW_CONFIG_METHOD_HW_DEVICE_CTX
The codec supports this format via the hw_device_ctx interface.
Definition: codec.h:422
src
#define src
Definition: vp8dsp.c:255
AV_CODEC_PROP_BITMAP_SUB
#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
av_buffer_pool_uninit
void av_buffer_pool_uninit(AVBufferPool **ppool)
Mark the pool as being available for freeing.
Definition: buffer.c:308
FramePool::linesize
int linesize[4]
Definition: decode.c:63
AV_FRAME_DATA_ICC_PROFILE
@ 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_CODEC_FLAG_TRUNCATED
#define AV_CODEC_FLAG_TRUNCATED
Input bitstream might be truncated at a random location instead of only at frame boundaries.
Definition: avcodec.h:252
AV_FRAME_DATA_MASTERING_DISPLAY_METADATA
@ AV_FRAME_DATA_MASTERING_DISPLAY_METADATA
Mastering display metadata associated with a video frame.
Definition: frame.h:119
AVCodecInternal::initial_height
int initial_height
Definition: internal.h:207
AVCodecContext::thread_safe_callbacks
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:1475
FF_DEBUG_BUFFERS
#define FF_DEBUG_BUFFERS
Definition: avcodec.h:1310
AVCodecInternal::skip_samples_multiplier
int skip_samples_multiplier
Definition: internal.h:199
av_packet_ref
int av_packet_ref(AVPacket *dst, const AVPacket *src)
Setup a new reference to the data described by a given packet.
Definition: avpacket.c:411
AV_EF_EXPLODE
#define AV_EF_EXPLODE
abort decoding on minor error detection
Definition: avcodec.h:1331
AVCodecInternal::draining_done
int draining_done
Definition: internal.h:195
FF_CODEC_CAP_EXPORTS_CROPPING
#define FF_CODEC_CAP_EXPORTS_CROPPING
The decoder sets the cropping fields in the output frames manually.
Definition: internal.h:68
UTF8_MAX_BYTES
#define UTF8_MAX_BYTES
Definition: decode.c:721
AVCodecInternal::bsf
AVBSFContext * bsf
Definition: internal.h:150
AVCOL_RANGE_UNSPECIFIED
@ AVCOL_RANGE_UNSPECIFIED
Definition: pixfmt.h:542
AV_CODEC_HW_CONFIG_METHOD_INTERNAL
@ AV_CODEC_HW_CONFIG_METHOD_INTERNAL
The codec supports this format by some internal method.
Definition: codec.h:442
av_get_channel_layout_nb_channels
int av_get_channel_layout_nb_channels(uint64_t channel_layout)
Return the number of channels in the channel layout.
Definition: channel_layout.c:226
AVCodecInternal::last_pkt_props
AVPacket * last_pkt_props
Properties (timestamps+side data) extracted from the last packet passed for decoding.
Definition: internal.h:156
av_buffer_create
AVBufferRef * av_buffer_create(uint8_t *data, 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
for
for(j=16;j >0;--j)
Definition: h264pred_template.c:469
AV_CODEC_CAP_CHANNEL_CONF
#define AV_CODEC_CAP_CHANNEL_CONF
Codec should fill in channel configuration and samplerate instead of container.
Definition: codec.h:104
AVCodecContext::time_base
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented.
Definition: avcodec.h:502
av_codec_is_decoder
int av_codec_is_decoder(const AVCodec *codec)
Definition: utils.c:81
AVCodecContext::lowres
int lowres
low resolution decoding, 1-> 1/2 size, 2->1/4 size
Definition: avcodec.h:1428
AVCodecContext::flags2
int flags2
AV_CODEC_FLAG2_*.
Definition: avcodec.h:466
ff_get_buffer
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: decode.c:1648
AV_CODEC_CAP_DR1
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
Definition: codec.h:52
update_frame_pool
static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:1249
AV_FRAME_DATA_REPLAYGAIN
@ AV_FRAME_DATA_REPLAYGAIN
ReplayGain information in the form of the AVReplayGain struct.
Definition: frame.h:76
AV_CODEC_FLAG_GRAY
#define AV_CODEC_FLAG_GRAY
Only decode/encode grayscale.
Definition: avcodec.h:243
AVPacket::size
int size
Definition: packet.h:374
ff_thread_decode_frame
int ff_thread_decode_frame(AVCodecContext *avctx, AVFrame *picture, int *got_picture_ptr, AVPacket *avpkt)
Submit a new frame to a decoding thread.
Definition: pthread_frame.c:502
byte
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_WB32 unsigned int_TMPL AV_WB24 unsigned int_TMPL AV_WB16 unsigned int_TMPL byte
Definition: bytestream.h:99
AVCodecContext::extra_hw_frames
int extra_hw_frames
Definition: avcodec.h:1952
AV_FRAME_CROP_UNALIGNED
@ AV_FRAME_CROP_UNALIGNED
Apply the maximum possible cropping, even if it requires setting the AVFrame.data[] entries to unalig...
Definition: frame.h:860
FrameDecodeData::post_process
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
AVCodecInternal::hwaccel_priv_data
void * hwaccel_priv_data
hwaccel-specific private data
Definition: internal.h:183
av_frame_copy
int av_frame_copy(AVFrame *dst, const AVFrame *src)
Copy the frame data from src to dst.
Definition: frame.c:678
av_err2str
#define av_err2str(errnum)
Convenience macro, the return value should be used only directly in function arguments but never stan...
Definition: error.h:119
AVCodecInternal::initial_channels
int initial_channels
Definition: internal.h:209
AVCodecInternal::initial_format
int initial_format
Definition: internal.h:206
FFMAX
#define FFMAX(a, b)
Definition: common.h:103
AVCodecContext::sample_fmt
enum AVSampleFormat sample_fmt
audio sample format
Definition: avcodec.h:996
AVCodecContext::pkt_timebase
AVRational pkt_timebase
Timebase in which pkt_dts/pts and AVPacket.dts/pts are.
Definition: avcodec.h:1720
AV_SAMPLE_FMT_NONE
@ AV_SAMPLE_FMT_NONE
Definition: samplefmt.h:59
size
int size
Definition: twinvq_data.h:10344
AV_NUM_DATA_POINTERS
#define AV_NUM_DATA_POINTERS
Definition: frame.h:304
AV_NOPTS_VALUE
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
AVFrameSideData::data
uint8_t * data
Definition: frame.h:211
av_frame_is_writable
int av_frame_is_writable(AVFrame *frame)
Check if the frame data is writable.
Definition: frame.c:473
AVCHROMA_LOC_UNSPECIFIED
@ AVCHROMA_LOC_UNSPECIFIED
Definition: pixfmt.h:596
AVFrame::format
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames,...
Definition: frame.h:376
AVCodecHWConfigInternal
Definition: hwconfig.h:29
FF_CODEC_CAP_SETS_FRAME_PROPS
#define FF_CODEC_CAP_SETS_FRAME_PROPS
Codec handles output frame properties internally instead of letting the internal logic derive them fr...
Definition: internal.h:86
frame.h
av_packet_unpack_dictionary
int av_packet_unpack_dictionary(const uint8_t *data, size_t size, AVDictionary **dict)
Unpack a dictionary from side_data.
Definition: avpacket.c:332
DecodeSimpleContext
Definition: internal.h:122
AVPacket::dts
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed.
Definition: packet.h:372
AVCodec::receive_frame
int(* receive_frame)(struct AVCodecContext *avctx, struct AVFrame *frame)
Decode API with decoupled packet/frame dataflow.
Definition: codec.h:320
AVCodecContext::pts_correction_num_faulty_dts
int64_t pts_correction_num_faulty_dts
Number of incorrect PTS values so far.
Definition: avcodec.h:1735
FFMIN
#define FFMIN(a, b)
Definition: common.h:105
AVCodecContext::pts_correction_last_pts
int64_t pts_correction_last_pts
Number of incorrect DTS values so far.
Definition: avcodec.h:1736
hwaccel_init
static int hwaccel_init(AVCodecContext *avctx, const AVCodecHWConfigInternal *hw_config)
Definition: decode.c:1034
AVPacketSideDataType
AVPacketSideDataType
Definition: packet.h:40
AV_PKT_DATA_CONTENT_LIGHT_LEVEL
@ AV_PKT_DATA_CONTENT_LIGHT_LEVEL
Content light level (based on CTA-861.3).
Definition: packet.h:235
AVPacket::flags
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:379
AVCodecInternal
Definition: internal.h:130
AV_LOG_INFO
#define AV_LOG_INFO
Standard information.
Definition: log.h:191
FF_THREAD_FRAME
#define FF_THREAD_FRAME
Decode more than one frame at once.
Definition: avcodec.h:1447
AV_FRAME_DATA_SKIP_SAMPLES
@ AV_FRAME_DATA_SKIP_SAMPLES
Recommmends skipping the specified number of samples.
Definition: frame.h:108
AVCodecContext::channels
int channels
number of audio channels
Definition: avcodec.h:989
AVHWAccel::name
const char * name
Name of the hardware accelerated codec.
Definition: avcodec.h:2039
avcodec_default_get_buffer2
int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags)
The default callback for AVCodecContext.get_buffer2().
Definition: decode.c:1449
avcodec_send_packet
int attribute_align_arg avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt)
Supply raw packet data as input to a decoder.
Definition: decode.c:576
AVCodec::hw_configs
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:345
av_samples_copy
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:220
extract_packet_props
static int extract_packet_props(AVCodecInternal *avci, const AVPacket *pkt)
Definition: decode.c:162
av_packet_copy_props
int av_packet_copy_props(AVPacket *dst, const AVPacket *src)
Copy only "properties" fields from src to dst.
Definition: avpacket.c:375
bprint.h
AV_FRAME_DATA_CONTENT_LIGHT_LEVEL
@ AV_FRAME_DATA_CONTENT_LIGHT_LEVEL
Content light level (based on CTA-861.3).
Definition: frame.h:136
i
int i
Definition: input.c:406
av_bsf_receive_packet
int av_bsf_receive_packet(AVBSFContext *ctx, AVPacket *pkt)
Retrieve a filtered packet.
Definition: bsf.c:224
AVPacket::pts
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: packet.h:366
AVCodecInternal::initial_width
int initial_width
Definition: internal.h:207
reget_buffer_internal
static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
Definition: decode.c:1718
av_packet_get_side_data
uint8_t * av_packet_get_side_data(const AVPacket *pkt, enum AVPacketSideDataType type, size_t *size)
Get side information from packet.
Definition: avpacket.c:241
decode_receive_frame_internal
static int decode_receive_frame_internal(AVCodecContext *avctx, AVFrame *frame)
Definition: decode.c:525
internal.h
AV_CODEC_HW_CONFIG_METHOD_AD_HOC
@ AV_CODEC_HW_CONFIG_METHOD_AD_HOC
The codec supports this format by some ad-hoc method.
Definition: codec.h:451
AVFrame::extended_data
uint8_t ** extended_data
pointers to the data planes/channels.
Definition: frame.h:350
av_malloc_array
#define av_malloc_array(a, b)
Definition: tableprint_vlc.h:32
AVCodecInternal::pkt_props
AVFifoBuffer * pkt_props
Definition: internal.h:157
common.h
av_assert1
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
AV_PKT_DATA_A53_CC
@ AV_PKT_DATA_A53_CC
ATSC A53 Part 4 Closed Captions.
Definition: packet.h:242
AVCodecContext::pts_correction_last_dts
int64_t pts_correction_last_dts
PTS of the last frame.
Definition: avcodec.h:1737
ff_decode_preinit
int ff_decode_preinit(AVCodecContext *avctx)
Perform decoder initialization and validation.
Definition: decode.c:1763
AV_FRAME_DATA_STEREO3D
@ AV_FRAME_DATA_STEREO3D
Stereoscopic 3d metadata.
Definition: frame.h:63
av_frame_move_ref
void av_frame_move_ref(AVFrame *dst, AVFrame *src)
Move everything contained in src to dst and reset src.
Definition: frame.c:461
av_frame_unref
void av_frame_unref(AVFrame *frame)
Unreference all the buffers referenced by frame and reset the frame fields.
Definition: frame.c:437
av_mallocz
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:243
av_inv_q
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
Definition: rational.h:159
AVCodecContext::hw_device_ctx
AVBufferRef * hw_device_ctx
A reference to the AVHWDeviceContext describing the device which will be used by a hardware encoder/d...
Definition: avcodec.h:1902
AV_PKT_DATA_SKIP_SAMPLES
@ AV_PKT_DATA_SKIP_SAMPLES
Recommmends skipping the specified number of samples.
Definition: packet.h:156
AVCodecContext::chroma_sample_location
enum AVChromaLocation chroma_sample_location
This defines the location of chroma samples.
Definition: avcodec.h:970
av_samples_get_buffer_size
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
AVCOL_SPC_UNSPECIFIED
@ AVCOL_SPC_UNSPECIFIED
Definition: pixfmt.h:505
AVCodecContext::height
int height
Definition: avcodec.h:552
video_get_buffer
static int video_get_buffer(AVCodecContext *s, AVFrame *pic)
Definition: decode.c:1405
decode_simple_internal
static int decode_simple_internal(AVCodecContext *avctx, AVFrame *frame, int64_t *discarded_samples)
Definition: decode.c:296
AVCodecContext::pix_fmt
enum AVPixelFormat pix_fmt
Pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:589
AVCodecInternal::nb_draining_errors
int nb_draining_errors
Definition: internal.h:202
AVCodecContext::hw_frames_ctx
AVBufferRef * hw_frames_ctx
A reference to the AVHWFramesContext describing the input (for encoding) or output (decoding) frames.
Definition: avcodec.h:1853
avcodec.h
AVCodecContext::sub_charenc_mode
int sub_charenc_mode
Subtitles character encoding mode.
Definition: avcodec.h:1752
AVHWFramesContext
This struct describes a set or pool of "hardware" frames (i.e.
Definition: hwcontext.h:124
av_buffer_allocz
AVBufferRef * av_buffer_allocz(size_t size)
Same as av_buffer_alloc(), except the returned buffer will be initialized to zero.
Definition: buffer.c:83
avcodec_get_hw_frames_parameters
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:985
ff_reget_buffer
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:1755
ret
ret
Definition: filter_design.txt:187
AVHWDeviceContext::type
enum AVHWDeviceType type
This field identifies the underlying API used for hardware access.
Definition: hwcontext.h:79
AVCodec::caps_internal
int caps_internal
Internal codec capabilities.
Definition: codec.h:330
frame
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
Definition: filter_design.txt:264
AVCodecContext::strict_std_compliance
int strict_std_compliance
strictly follow the standard (MPEG-4, ...).
Definition: avcodec.h:1276
FF_REGET_BUFFER_FLAG_READONLY
#define FF_REGET_BUFFER_FLAG_READONLY
the returned buffer does not need to be writable
Definition: internal.h:275
AV_CODEC_PROP_TEXT_SUB
#define AV_CODEC_PROP_TEXT_SUB
Subtitle codec is text based.
Definition: codec_desc.h:102
FramePool
Definition: decode.c:50
AV_PKT_DATA_S12M_TIMECODE
@ AV_PKT_DATA_S12M_TIMECODE
Timecode which conforms to SMPTE ST 12-1:2014.
Definition: packet.h:291
AV_INPUT_BUFFER_PADDING_SIZE
#define AV_INPUT_BUFFER_PADDING_SIZE
Definition: defs.h:40
av_bsf_send_packet
int av_bsf_send_packet(AVBSFContext *ctx, AVPacket *pkt)
Submit a packet for filtering.
Definition: bsf.c:198
AV_RL32
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:92
SIZE_SPECIFIER
#define SIZE_SPECIFIER
Definition: internal.h:192
apply_param_change
static int apply_param_change(AVCodecContext *avctx, const AVPacket *avpkt)
Definition: decode.c:69
ff_decode_frame_props
int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
Set various frame properties from the codec context / packet data.
Definition: decode.c:1485
AV_FRAME_DATA_DYNAMIC_HDR_PLUS
@ AV_FRAME_DATA_DYNAMIC_HDR_PLUS
HDR dynamic metadata associated with a video frame.
Definition: frame.h:158
AVCodecContext
main external API structure.
Definition: avcodec.h:379
AVCodecContext::active_thread_type
int active_thread_type
Which multithreading methods are in use by the codec.
Definition: avcodec.h:1455
AVCodecContext::codec_descriptor
const AVCodecDescriptor * codec_descriptor
AVCodecDescriptor.
Definition: avcodec.h:1727
channel_layout.h
AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT
@ AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT
Definition: packet.h:426
AVRational::den
int den
Denominator.
Definition: rational.h:60
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AVCodecContext::export_side_data
int export_side_data
Bit set of AV_CODEC_EXPORT_DATA_* flags, which affects the kind of metadata exported in frame,...
Definition: avcodec.h:1978
AV_CODEC_CAP_DELAY
#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
av_mul_q
AVRational av_mul_q(AVRational b, AVRational c)
Multiply two rationals.
Definition: rational.c:80
avcodec_get_hw_config
const AVCodecHWConfig * avcodec_get_hw_config(const AVCodec *codec, int index)
Retrieve supported hardware configurations for a codec.
Definition: utils.c:858
AVCodecContext::debug
int debug
debug
Definition: avcodec.h:1298
AVCodecInternal::buffer_frame
AVFrame * buffer_frame
Definition: internal.h:194
AV_CODEC_CAP_PARAM_CHANGE
#define AV_CODEC_CAP_PARAM_CHANGE
Codec supports changed parameters at any point.
Definition: codec.h:116
AVCodecInternal::draining
int draining
checks API usage: after codec draining, flush is required to resume operation
Definition: internal.h:188
FF_DISABLE_DEPRECATION_WARNINGS
#define FF_DISABLE_DEPRECATION_WARNINGS
Definition: internal.h:82
AVCodecContext::coded_width
int coded_width
Bitstream width / height, may be different from width/height e.g.
Definition: avcodec.h:567
AVHWFramesContext::initial_pool_size
int initial_pool_size
Initial size of the frame pool.
Definition: hwcontext.h:199
AVCodecContext::codec_type
enum AVMediaType codec_type
Definition: avcodec.h:387
AV_FRAME_FLAG_DISCARD
#define AV_FRAME_FLAG_DISCARD
A flag to mark the frames which need to be decoded, but shouldn't be output.
Definition: frame.h:515
desc
const char * desc
Definition: libsvtav1.c:79
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AVBufferRef
A reference to a data buffer.
Definition: buffer.h:82
ff_set_dimensions
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:86
AV_CODEC_EXPORT_DATA_MVS
#define AV_CODEC_EXPORT_DATA_MVS
Export motion vectors through frame side data.
Definition: avcodec.h:338
AV_CODEC_CAP_SUBFRAMES
#define AV_CODEC_CAP_SUBFRAMES
Codec can output multiple frames per AVPacket Normally demuxers return one frame at a time,...
Definition: codec.h:95
ff_attach_decode_data
int ff_attach_decode_data(AVFrame *frame)
Definition: decode.c:1624
av_fifo_size
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
AVCodecContext::frame_number
int frame_number
Frame counter, set by libavcodec.
Definition: avcodec.h:1019
recode_subtitle
static int recode_subtitle(AVCodecContext *avctx, AVPacket **outpkt, AVPacket *inpkt, AVPacket *buf_pkt)
Definition: decode.c:722
AVFrameSideData
Structure to hold side data for an AVFrame.
Definition: frame.h:209
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
AV_CODEC_FLAG2_EXPORT_MVS
#define AV_CODEC_FLAG2_EXPORT_MVS
Export motion vectors through frame side data.
Definition: avcodec.h:315
IS_EMPTY
#define IS_EMPTY(pkt)
Definition: decode.c:148
FFALIGN
#define FFALIGN(x, a)
Definition: macros.h:48
AVPacket
This structure stores compressed data.
Definition: packet.h:350
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
AVHWAccel::frame_params
int(* frame_params)(AVCodecContext *avctx, AVBufferRef *hw_frames_ctx)
Fill the given hw_frames context with current codec parameters.
Definition: avcodec.h:2192
AVPacket::pos
int64_t pos
byte position in stream, -1 if unknown
Definition: packet.h:393
AVCodecContext::reordered_opaque
int64_t reordered_opaque
opaque 64-bit number (generally a PTS) that will be reordered and output in AVFrame....
Definition: avcodec.h:1348
av_bsf_free
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
AVCodecContext::width
int width
picture width / height.
Definition: avcodec.h:552
bytestream.h
convert_header.str
string str
Definition: convert_header.py:20
FrameDecodeData::hwaccel_priv
void * hwaccel_priv
Per-frame private data for hwaccels.
Definition: decode.h:52
imgutils.h
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
hwcontext.h
AVERROR_BUG
#define AVERROR_BUG
Internal bug, also see AVERROR_BUG2.
Definition: error.h:50
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:334
AVCodecHWConfigInternal::hwaccel
const AVHWAccel * hwaccel
If this configuration uses a hwaccel, a pointer to it.
Definition: hwconfig.h:39
DecodeSimpleContext::in_pkt
AVPacket * in_pkt
Definition: internal.h:123
AVCodec::decode
int(* decode)(struct AVCodecContext *avctx, void *outdata, int *got_frame_ptr, struct AVPacket *avpkt)
Decode picture or subtitle data.
Definition: codec.h:305
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
AVCodecHWConfig
Definition: codec.h:454
h
h
Definition: vp9dsp_template.c:2038
AVCodecContext::sw_pix_fmt
enum AVPixelFormat sw_pix_fmt
Nominal unaccelerated pixel format, see AV_PIX_FMT_xxx.
Definition: avcodec.h:1713
av_image_check_sar
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:323
avstring.h
ff_copy_palette
int ff_copy_palette(void *dst, const AVPacket *src, void *logctx)
Check whether the side-data of src contains a palette of size AVPALETTE_SIZE; if so,...
Definition: decode.c:1850
FF_SANE_NB_CHANNELS
#define FF_SANE_NB_CHANNELS
Definition: internal.h:108
planar
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 &&1) swri_audio_convert_init_x86(ctx, out_fmt, in_fmt, channels);if(ARCH_ARM) swri_audio_convert_init_arm(ctx, out_fmt, in_fmt, channels);if(ARCH_AARCH64) swri_audio_convert_init_aarch64(ctx, out_fmt, in_fmt, channels);return ctx;} void swri_audio_convert_free(AudioConvert **ctx) { av_freep(ctx);} int swri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, int len) { int ch;int off=0;const int os=(out->planar ? 1 :out->ch_count) *out->bps;unsigned misaligned=0;av_assert0(ctx->channels==out->ch_count);if(ctx->in_simd_align_mask) { int planes=in->planar ? in->ch_count :1;unsigned m=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) in->ch[ch];misaligned|=m &ctx->in_simd_align_mask;} if(ctx->out_simd_align_mask) { int planes=out->planar ? out->ch_count :1;unsigned m=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) out->ch[ch];misaligned|=m &ctx->out_simd_align_mask;} if(ctx->simd_f &&!ctx->ch_map &&!misaligned){ off=len &~15;av_assert1(off >=0);av_assert1(off<=len);av_assert2(ctx->channels==SWR_CH_MAX||!in->ch[ctx->channels]);if(off >0){ if(out->planar==in->planar){ int planes=out->planar ? out->ch_count :1;for(ch=0;ch< planes;ch++){ ctx->simd_f(out->ch+ch,(const uint8_t **) in->ch+ch, off *(out-> planar
Definition: audioconvert.c:56
AVCodecHWConfigInternal::public
AVCodecHWConfig public
This is the structure which will be returned to the user by avcodec_get_hw_config().
Definition: hwconfig.h:34
decode_bsfs_init
static int decode_bsfs_init(AVCodecContext *avctx)
Definition: decode.c:190
AV_PIX_FMT_FLAG_PAL
#define AV_PIX_FMT_FLAG_PAL
Pixel format has a palette in data[1], values are indexes in this palette.
Definition: pixdesc.h:120
av_hwframe_get_buffer
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
FramePool::samples
int samples
Definition: decode.c:66
AVHWAccel::pix_fmt
enum AVPixelFormat pix_fmt
Supported pixel format.
Definition: avcodec.h:2060
AVCodecContext::sample_aspect_ratio
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:749
AVPacket::side_data_elems
int side_data_elems
Definition: packet.h:385
av_get_pix_fmt_name
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:2460
FF_SUB_CHARENC_MODE_IGNORE
#define FF_SUB_CHARENC_MODE_IGNORE
neither convert the subtitles, nor check them for valid UTF-8
Definition: avcodec.h:1756
min
float min
Definition: vorbis_enc_data.h:429
intmath.h