FFmpeg  4.4
flvdec.c
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1 /*
2  * FLV demuxer
3  * Copyright (c) 2003 The FFmpeg Project
4  *
5  * This demuxer will generate a 1 byte extradata for VP6F content.
6  * It is composed of:
7  * - upper 4 bits: difference between encoded width and visible width
8  * - lower 4 bits: difference between encoded height and visible height
9  *
10  * This file is part of FFmpeg.
11  *
12  * FFmpeg is free software; you can redistribute it and/or
13  * modify it under the terms of the GNU Lesser General Public
14  * License as published by the Free Software Foundation; either
15  * version 2.1 of the License, or (at your option) any later version.
16  *
17  * FFmpeg is distributed in the hope that it will be useful,
18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20  * Lesser General Public License for more details.
21  *
22  * You should have received a copy of the GNU Lesser General Public
23  * License along with FFmpeg; if not, write to the Free Software
24  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25  */
26 
27 #include "libavutil/avstring.h"
29 #include "libavutil/dict.h"
30 #include "libavutil/opt.h"
31 #include "libavutil/intfloat.h"
32 #include "libavutil/mathematics.h"
34 #include "libavcodec/bytestream.h"
35 #include "avformat.h"
36 #include "internal.h"
37 #include "avio_internal.h"
38 #include "flv.h"
39 
40 #define VALIDATE_INDEX_TS_THRESH 2500
41 
42 #define RESYNC_BUFFER_SIZE (1<<20)
43 
44 #define MAX_DEPTH 16 ///< arbitrary limit to prevent unbounded recursion
45 
46 typedef struct FLVContext {
47  const AVClass *class; ///< Class for private options.
48  int trust_metadata; ///< configure streams according onMetaData
49  int trust_datasize; ///< trust data size of FLVTag
50  int dump_full_metadata; ///< Dump full metadata of the onMetadata
51  int wrong_dts; ///< wrong dts due to negative cts
56  struct {
57  int64_t dts;
58  int64_t pos;
63 
65 
68 
71  int64_t video_bit_rate;
72  int64_t audio_bit_rate;
73  int64_t *keyframe_times;
77  int64_t last_ts;
78  int64_t time_offset;
79  int64_t time_pos;
80 } FLVContext;
81 
82 /* AMF date type */
83 typedef struct amf_date {
84  double milliseconds;
85  int16_t timezone;
86 } amf_date;
87 
88 static int probe(const AVProbeData *p, int live)
89 {
90  const uint8_t *d = p->buf;
91  unsigned offset = AV_RB32(d + 5);
92 
93  if (d[0] == 'F' &&
94  d[1] == 'L' &&
95  d[2] == 'V' &&
96  d[3] < 5 && d[5] == 0 &&
97  offset + 100 < p->buf_size &&
98  offset > 8) {
99  int is_live = !memcmp(d + offset + 40, "NGINX RTMP", 10);
100 
101  if (live == is_live)
102  return AVPROBE_SCORE_MAX;
103  }
104  return 0;
105 }
106 
107 static int flv_probe(const AVProbeData *p)
108 {
109  return probe(p, 0);
110 }
111 
112 static int live_flv_probe(const AVProbeData *p)
113 {
114  return probe(p, 1);
115 }
116 
117 static int kux_probe(const AVProbeData *p)
118 {
119  const uint8_t *d = p->buf;
120 
121  if (d[0] == 'K' &&
122  d[1] == 'D' &&
123  d[2] == 'K' &&
124  d[3] == 0 &&
125  d[4] == 0) {
126  return AVPROBE_SCORE_EXTENSION + 1;
127  }
128  return 0;
129 }
130 
132 {
133  FLVContext *flv = s->priv_data;
134  AVStream *stream = NULL;
135  unsigned int i = 0;
136 
137  if (flv->last_keyframe_stream_index < 0) {
138  av_log(s, AV_LOG_DEBUG, "keyframe stream hasn't been created\n");
139  return;
140  }
141 
142  av_assert0(flv->last_keyframe_stream_index <= s->nb_streams);
143  stream = s->streams[flv->last_keyframe_stream_index];
144 
145  if (stream->nb_index_entries == 0) {
146  for (i = 0; i < flv->keyframe_count; i++) {
147  av_log(s, AV_LOG_TRACE, "keyframe filepositions = %"PRId64" times = %"PRId64"\n",
148  flv->keyframe_filepositions[i], flv->keyframe_times[i] * 1000);
150  flv->keyframe_times[i] * 1000, 0, 0, AVINDEX_KEYFRAME);
151  }
152  } else
153  av_log(s, AV_LOG_WARNING, "Skipping duplicate index\n");
154 
155  if (stream->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
156  av_freep(&flv->keyframe_times);
158  flv->keyframe_count = 0;
159  }
160 }
161 
163 {
164  FLVContext *flv = s->priv_data;
166  if (!st)
167  return NULL;
169  if (s->nb_streams>=3 ||( s->nb_streams==2
170  && s->streams[0]->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE
171  && s->streams[1]->codecpar->codec_type != AVMEDIA_TYPE_SUBTITLE
172  && s->streams[0]->codecpar->codec_type != AVMEDIA_TYPE_DATA
173  && s->streams[1]->codecpar->codec_type != AVMEDIA_TYPE_DATA))
174  s->ctx_flags &= ~AVFMTCTX_NOHEADER;
176  st->codecpar->bit_rate = flv->audio_bit_rate;
178  }
180  st->codecpar->bit_rate = flv->video_bit_rate;
182  st->avg_frame_rate = flv->framerate;
183  }
184 
185 
186  avpriv_set_pts_info(st, 32, 1, 1000); /* 32 bit pts in ms */
187  flv->last_keyframe_stream_index = s->nb_streams - 1;
189  return st;
190 }
191 
193 {
194  int bits_per_coded_sample = (flags & FLV_AUDIO_SAMPLESIZE_MASK) ? 16 : 8;
195  int flv_codecid = flags & FLV_AUDIO_CODECID_MASK;
196  int codec_id;
197 
198  if (!apar->codec_id && !apar->codec_tag)
199  return 1;
200 
201  if (apar->bits_per_coded_sample != bits_per_coded_sample)
202  return 0;
203 
204  switch (flv_codecid) {
205  // no distinction between S16 and S8 PCM codec flags
206  case FLV_CODECID_PCM:
207  codec_id = bits_per_coded_sample == 8
209 #if HAVE_BIGENDIAN
211 #else
213 #endif
214  return codec_id == apar->codec_id;
215  case FLV_CODECID_PCM_LE:
216  codec_id = bits_per_coded_sample == 8
219  return codec_id == apar->codec_id;
220  case FLV_CODECID_AAC:
221  return apar->codec_id == AV_CODEC_ID_AAC;
222  case FLV_CODECID_ADPCM:
223  return apar->codec_id == AV_CODEC_ID_ADPCM_SWF;
224  case FLV_CODECID_SPEEX:
225  return apar->codec_id == AV_CODEC_ID_SPEEX;
226  case FLV_CODECID_MP3:
227  return apar->codec_id == AV_CODEC_ID_MP3;
231  return apar->codec_id == AV_CODEC_ID_NELLYMOSER;
233  return apar->sample_rate == 8000 &&
236  return apar->sample_rate == 8000 &&
238  default:
239  return apar->codec_tag == (flv_codecid >> FLV_AUDIO_CODECID_OFFSET);
240  }
241 }
242 
244  AVCodecParameters *apar, int flv_codecid)
245 {
246  switch (flv_codecid) {
247  // no distinction between S16 and S8 PCM codec flags
248  case FLV_CODECID_PCM:
249  apar->codec_id = apar->bits_per_coded_sample == 8
251 #if HAVE_BIGENDIAN
253 #else
255 #endif
256  break;
257  case FLV_CODECID_PCM_LE:
258  apar->codec_id = apar->bits_per_coded_sample == 8
261  break;
262  case FLV_CODECID_AAC:
263  apar->codec_id = AV_CODEC_ID_AAC;
264  break;
265  case FLV_CODECID_ADPCM:
267  break;
268  case FLV_CODECID_SPEEX:
269  apar->codec_id = AV_CODEC_ID_SPEEX;
270  apar->sample_rate = 16000;
271  break;
272  case FLV_CODECID_MP3:
273  apar->codec_id = AV_CODEC_ID_MP3;
275  break;
277  // in case metadata does not otherwise declare samplerate
278  apar->sample_rate = 8000;
280  break;
282  apar->sample_rate = 16000;
284  break;
287  break;
289  apar->sample_rate = 8000;
291  break;
293  apar->sample_rate = 8000;
295  break;
296  default:
297  avpriv_request_sample(s, "Audio codec (%x)",
298  flv_codecid >> FLV_AUDIO_CODECID_OFFSET);
299  apar->codec_tag = flv_codecid >> FLV_AUDIO_CODECID_OFFSET;
300  }
301 }
302 
304 {
305  int flv_codecid = flags & FLV_VIDEO_CODECID_MASK;
306 
307  if (!vpar->codec_id && !vpar->codec_tag)
308  return 1;
309 
310  switch (flv_codecid) {
311  case FLV_CODECID_H263:
312  return vpar->codec_id == AV_CODEC_ID_FLV1;
313  case FLV_CODECID_SCREEN:
314  return vpar->codec_id == AV_CODEC_ID_FLASHSV;
315  case FLV_CODECID_SCREEN2:
316  return vpar->codec_id == AV_CODEC_ID_FLASHSV2;
317  case FLV_CODECID_VP6:
318  return vpar->codec_id == AV_CODEC_ID_VP6F;
319  case FLV_CODECID_VP6A:
320  return vpar->codec_id == AV_CODEC_ID_VP6A;
321  case FLV_CODECID_H264:
322  return vpar->codec_id == AV_CODEC_ID_H264;
323  default:
324  return vpar->codec_tag == flv_codecid;
325  }
326 }
327 
329  int flv_codecid, int read)
330 {
331  int ret = 0;
332  AVCodecParameters *par = vstream->codecpar;
333  enum AVCodecID old_codec_id = vstream->codecpar->codec_id;
334  switch (flv_codecid) {
335  case FLV_CODECID_H263:
336  par->codec_id = AV_CODEC_ID_FLV1;
337  break;
339  par->codec_id = AV_CODEC_ID_H263;
340  break; // Really mean it this time
341  case FLV_CODECID_SCREEN:
343  break;
344  case FLV_CODECID_SCREEN2:
346  break;
347  case FLV_CODECID_VP6:
348  par->codec_id = AV_CODEC_ID_VP6F;
349  case FLV_CODECID_VP6A:
350  if (flv_codecid == FLV_CODECID_VP6A)
351  par->codec_id = AV_CODEC_ID_VP6A;
352  if (read) {
353  if (par->extradata_size != 1) {
354  ff_alloc_extradata(par, 1);
355  }
356  if (par->extradata)
357  par->extradata[0] = avio_r8(s->pb);
358  else
359  avio_skip(s->pb, 1);
360  }
361  ret = 1; // 1 byte body size adjustment for flv_read_packet()
362  break;
363  case FLV_CODECID_H264:
364  par->codec_id = AV_CODEC_ID_H264;
366  ret = 3; // not 4, reading packet type will consume one byte
367  break;
368  case FLV_CODECID_MPEG4:
370  ret = 3;
371  break;
372  default:
373  avpriv_request_sample(s, "Video codec (%x)", flv_codecid);
374  par->codec_tag = flv_codecid;
375  }
376 
377  if (!vstream->internal->need_context_update && par->codec_id != old_codec_id) {
378  avpriv_request_sample(s, "Changing the codec id midstream");
379  return AVERROR_PATCHWELCOME;
380  }
381 
382  return ret;
383 }
384 
385 static int amf_get_string(AVIOContext *ioc, char *buffer, int buffsize)
386 {
387  int ret;
388  int length = avio_rb16(ioc);
389  if (length >= buffsize) {
390  avio_skip(ioc, length);
391  return -1;
392  }
393 
394  ret = avio_read(ioc, buffer, length);
395  if (ret < 0)
396  return ret;
397  if (ret < length)
398  return AVERROR_INVALIDDATA;
399 
400  buffer[length] = '\0';
401 
402  return length;
403 }
404 
406 {
407  FLVContext *flv = s->priv_data;
408  unsigned int timeslen = 0, fileposlen = 0, i;
409  char str_val[256];
410  int64_t *times = NULL;
411  int64_t *filepositions = NULL;
412  int ret = AVERROR(ENOSYS);
413  int64_t initial_pos = avio_tell(ioc);
414 
415  if (flv->keyframe_count > 0) {
416  av_log(s, AV_LOG_DEBUG, "keyframes have been parsed\n");
417  return 0;
418  }
419  av_assert0(!flv->keyframe_times);
421 
422  if (s->flags & AVFMT_FLAG_IGNIDX)
423  return 0;
424 
425  while (avio_tell(ioc) < max_pos - 2 &&
426  amf_get_string(ioc, str_val, sizeof(str_val)) > 0) {
427  int64_t **current_array;
428  unsigned int arraylen;
429 
430  // Expect array object in context
431  if (avio_r8(ioc) != AMF_DATA_TYPE_ARRAY)
432  break;
433 
434  arraylen = avio_rb32(ioc);
435  if (arraylen>>28)
436  break;
437 
438  if (!strcmp(KEYFRAMES_TIMESTAMP_TAG , str_val) && !times) {
439  current_array = &times;
440  timeslen = arraylen;
441  } else if (!strcmp(KEYFRAMES_BYTEOFFSET_TAG, str_val) &&
442  !filepositions) {
443  current_array = &filepositions;
444  fileposlen = arraylen;
445  } else
446  // unexpected metatag inside keyframes, will not use such
447  // metadata for indexing
448  break;
449 
450  if (!(*current_array = av_mallocz(sizeof(**current_array) * arraylen))) {
451  ret = AVERROR(ENOMEM);
452  goto finish;
453  }
454 
455  for (i = 0; i < arraylen && avio_tell(ioc) < max_pos - 1; i++) {
456  double d;
457  if (avio_r8(ioc) != AMF_DATA_TYPE_NUMBER)
458  goto invalid;
459  d = av_int2double(avio_rb64(ioc));
460  if (isnan(d) || d < INT64_MIN || d > INT64_MAX)
461  goto invalid;
462  current_array[0][i] = d;
463  }
464  if (times && filepositions) {
465  // All done, exiting at a position allowing amf_parse_object
466  // to finish parsing the object
467  ret = 0;
468  break;
469  }
470  }
471 
472  if (timeslen == fileposlen && fileposlen>1 && max_pos <= filepositions[0]) {
473  for (i = 0; i < FFMIN(2,fileposlen); i++) {
474  flv->validate_index[i].pos = filepositions[i];
475  flv->validate_index[i].dts = times[i] * 1000;
476  flv->validate_count = i + 1;
477  }
478  flv->keyframe_times = times;
479  flv->keyframe_filepositions = filepositions;
480  flv->keyframe_count = timeslen;
481  times = NULL;
482  filepositions = NULL;
483  } else {
484 invalid:
485  av_log(s, AV_LOG_WARNING, "Invalid keyframes object, skipping.\n");
486  }
487 
488 finish:
489  av_freep(&times);
490  av_freep(&filepositions);
491  avio_seek(ioc, initial_pos, SEEK_SET);
492  return ret;
493 }
494 
496  AVStream *vstream, const char *key,
497  int64_t max_pos, int depth)
498 {
499  AVCodecParameters *apar, *vpar;
500  FLVContext *flv = s->priv_data;
501  AVIOContext *ioc;
502  AMFDataType amf_type;
503  char str_val[1024];
504  double num_val;
505  amf_date date;
506 
507  if (depth > MAX_DEPTH)
508  return AVERROR_PATCHWELCOME;
509 
510  num_val = 0;
511  ioc = s->pb;
512  if (avio_feof(ioc))
513  return AVERROR_EOF;
514  amf_type = avio_r8(ioc);
515 
516  switch (amf_type) {
518  num_val = av_int2double(avio_rb64(ioc));
519  break;
520  case AMF_DATA_TYPE_BOOL:
521  num_val = avio_r8(ioc);
522  break;
524  if (amf_get_string(ioc, str_val, sizeof(str_val)) < 0) {
525  av_log(s, AV_LOG_ERROR, "AMF_DATA_TYPE_STRING parsing failed\n");
526  return -1;
527  }
528  break;
530  if (key &&
531  (ioc->seekable & AVIO_SEEKABLE_NORMAL) &&
532  !strcmp(KEYFRAMES_TAG, key) && depth == 1)
533  if (parse_keyframes_index(s, ioc, max_pos) < 0)
534  av_log(s, AV_LOG_ERROR, "Keyframe index parsing failed\n");
535  else
537  while (avio_tell(ioc) < max_pos - 2 &&
538  amf_get_string(ioc, str_val, sizeof(str_val)) > 0)
539  if (amf_parse_object(s, astream, vstream, str_val, max_pos,
540  depth + 1) < 0)
541  return -1; // if we couldn't skip, bomb out.
542  if (avio_r8(ioc) != AMF_END_OF_OBJECT) {
543  av_log(s, AV_LOG_ERROR, "Missing AMF_END_OF_OBJECT in AMF_DATA_TYPE_OBJECT\n");
544  return -1;
545  }
546  break;
547  case AMF_DATA_TYPE_NULL:
550  break; // these take up no additional space
552  {
553  unsigned v;
554  avio_skip(ioc, 4); // skip 32-bit max array index
555  while (avio_tell(ioc) < max_pos - 2 &&
556  amf_get_string(ioc, str_val, sizeof(str_val)) > 0)
557  // this is the only case in which we would want a nested
558  // parse to not skip over the object
559  if (amf_parse_object(s, astream, vstream, str_val, max_pos,
560  depth + 1) < 0)
561  return -1;
562  v = avio_r8(ioc);
563  if (v != AMF_END_OF_OBJECT) {
564  av_log(s, AV_LOG_ERROR, "Missing AMF_END_OF_OBJECT in AMF_DATA_TYPE_MIXEDARRAY, found %d\n", v);
565  return -1;
566  }
567  break;
568  }
569  case AMF_DATA_TYPE_ARRAY:
570  {
571  unsigned int arraylen, i;
572 
573  arraylen = avio_rb32(ioc);
574  for (i = 0; i < arraylen && avio_tell(ioc) < max_pos - 1; i++)
576  depth + 1) < 0)
577  return -1; // if we couldn't skip, bomb out.
578  }
579  break;
580  case AMF_DATA_TYPE_DATE:
581  // timestamp (double) and UTC offset (int16)
582  date.milliseconds = av_int2double(avio_rb64(ioc));
583  date.timezone = avio_rb16(ioc);
584  break;
585  default: // unsupported type, we couldn't skip
586  av_log(s, AV_LOG_ERROR, "unsupported amf type %d\n", amf_type);
587  return -1;
588  }
589 
590  if (key) {
591  apar = astream ? astream->codecpar : NULL;
592  vpar = vstream ? vstream->codecpar : NULL;
593 
594  // stream info doesn't live any deeper than the first object
595  if (depth == 1) {
596  if (amf_type == AMF_DATA_TYPE_NUMBER ||
597  amf_type == AMF_DATA_TYPE_BOOL) {
598  if (!strcmp(key, "duration"))
599  s->duration = num_val * AV_TIME_BASE;
600  else if (!strcmp(key, "videodatarate") &&
601  0 <= (int)(num_val * 1024.0))
602  flv->video_bit_rate = num_val * 1024.0;
603  else if (!strcmp(key, "audiodatarate") &&
604  0 <= (int)(num_val * 1024.0))
605  flv->audio_bit_rate = num_val * 1024.0;
606  else if (!strcmp(key, "datastream")) {
608  if (!st)
609  return AVERROR(ENOMEM);
611  } else if (!strcmp(key, "framerate")) {
612  flv->framerate = av_d2q(num_val, 1000);
613  if (vstream)
614  vstream->avg_frame_rate = flv->framerate;
615  } else if (flv->trust_metadata) {
616  if (!strcmp(key, "videocodecid") && vpar) {
617  int ret = flv_set_video_codec(s, vstream, num_val, 0);
618  if (ret < 0)
619  return ret;
620  } else if (!strcmp(key, "audiocodecid") && apar) {
621  int id = ((int)num_val) << FLV_AUDIO_CODECID_OFFSET;
622  flv_set_audio_codec(s, astream, apar, id);
623  } else if (!strcmp(key, "audiosamplerate") && apar) {
624  apar->sample_rate = num_val;
625  } else if (!strcmp(key, "audiosamplesize") && apar) {
626  apar->bits_per_coded_sample = num_val;
627  } else if (!strcmp(key, "stereo") && apar) {
628  apar->channels = num_val + 1;
629  apar->channel_layout = apar->channels == 2 ?
632  } else if (!strcmp(key, "width") && vpar) {
633  vpar->width = num_val;
634  } else if (!strcmp(key, "height") && vpar) {
635  vpar->height = num_val;
636  }
637  }
638  }
639  if (amf_type == AMF_DATA_TYPE_STRING) {
640  if (!strcmp(key, "encoder")) {
641  int version = -1;
642  if (1 == sscanf(str_val, "Open Broadcaster Software v0.%d", &version)) {
643  if (version > 0 && version <= 655)
644  flv->broken_sizes = 1;
645  }
646  } else if (!strcmp(key, "metadatacreator")) {
647  if ( !strcmp (str_val, "MEGA")
648  || !strncmp(str_val, "FlixEngine", 10))
649  flv->broken_sizes = 1;
650  }
651  }
652  }
653 
654  if (amf_type == AMF_DATA_TYPE_OBJECT && s->nb_streams == 1 &&
655  ((!apar && !strcmp(key, "audiocodecid")) ||
656  (!vpar && !strcmp(key, "videocodecid"))))
657  s->ctx_flags &= ~AVFMTCTX_NOHEADER; //If there is either audio/video missing, codecid will be an empty object
658 
659  if ((!strcmp(key, "duration") ||
660  !strcmp(key, "filesize") ||
661  !strcmp(key, "width") ||
662  !strcmp(key, "height") ||
663  !strcmp(key, "videodatarate") ||
664  !strcmp(key, "framerate") ||
665  !strcmp(key, "videocodecid") ||
666  !strcmp(key, "audiodatarate") ||
667  !strcmp(key, "audiosamplerate") ||
668  !strcmp(key, "audiosamplesize") ||
669  !strcmp(key, "stereo") ||
670  !strcmp(key, "audiocodecid") ||
671  !strcmp(key, "datastream")) && !flv->dump_full_metadata)
672  return 0;
673 
674  s->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
675  if (amf_type == AMF_DATA_TYPE_BOOL) {
676  av_strlcpy(str_val, num_val > 0 ? "true" : "false",
677  sizeof(str_val));
678  av_dict_set(&s->metadata, key, str_val, 0);
679  } else if (amf_type == AMF_DATA_TYPE_NUMBER) {
680  snprintf(str_val, sizeof(str_val), "%.f", num_val);
681  av_dict_set(&s->metadata, key, str_val, 0);
682  } else if (amf_type == AMF_DATA_TYPE_STRING) {
683  av_dict_set(&s->metadata, key, str_val, 0);
684  } else if (amf_type == AMF_DATA_TYPE_DATE) {
685  time_t time;
686  struct tm t;
687  char datestr[128];
688  time = date.milliseconds / 1000; // to seconds
689  localtime_r(&time, &t);
690  strftime(datestr, sizeof(datestr), "%a, %d %b %Y %H:%M:%S %z", &t);
691 
692  av_dict_set(&s->metadata, key, datestr, 0);
693  }
694  }
695 
696  return 0;
697 }
698 
699 #define TYPE_ONTEXTDATA 1
700 #define TYPE_ONCAPTION 2
701 #define TYPE_ONCAPTIONINFO 3
702 #define TYPE_UNKNOWN 9
703 
704 static int flv_read_metabody(AVFormatContext *s, int64_t next_pos)
705 {
706  FLVContext *flv = s->priv_data;
708  AVStream *stream, *astream, *vstream;
709  AVStream av_unused *dstream;
710  AVIOContext *ioc;
711  int i;
712  char buffer[32];
713 
714  astream = NULL;
715  vstream = NULL;
716  dstream = NULL;
717  ioc = s->pb;
718 
719  // first object needs to be "onMetaData" string
720  type = avio_r8(ioc);
721  if (type != AMF_DATA_TYPE_STRING ||
722  amf_get_string(ioc, buffer, sizeof(buffer)) < 0)
723  return TYPE_UNKNOWN;
724 
725  if (!strcmp(buffer, "onTextData"))
726  return TYPE_ONTEXTDATA;
727 
728  if (!strcmp(buffer, "onCaption"))
729  return TYPE_ONCAPTION;
730 
731  if (!strcmp(buffer, "onCaptionInfo"))
732  return TYPE_ONCAPTIONINFO;
733 
734  if (strcmp(buffer, "onMetaData") && strcmp(buffer, "onCuePoint") && strcmp(buffer, "|RtmpSampleAccess")) {
735  av_log(s, AV_LOG_DEBUG, "Unknown type %s\n", buffer);
736  return TYPE_UNKNOWN;
737  }
738 
739  // find the streams now so that amf_parse_object doesn't need to do
740  // the lookup every time it is called.
741  for (i = 0; i < s->nb_streams; i++) {
742  stream = s->streams[i];
743  if (stream->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
744  vstream = stream;
746  } else if (stream->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
747  astream = stream;
748  if (flv->last_keyframe_stream_index == -1)
750  } else if (stream->codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE)
751  dstream = stream;
752  }
753 
754  // parse the second object (we want a mixed array)
755  if (amf_parse_object(s, astream, vstream, buffer, next_pos, 0) < 0)
756  return -1;
757 
758  return 0;
759 }
760 
762 {
763  int flags;
764  FLVContext *flv = s->priv_data;
765  int offset;
766  int pre_tag_size = 0;
767 
768  /* Actual FLV data at 0xe40000 in KUX file */
769  if(!strcmp(s->iformat->name, "kux"))
770  avio_skip(s->pb, 0xe40000);
771 
772  avio_skip(s->pb, 4);
773  flags = avio_r8(s->pb);
774 
776 
777  s->ctx_flags |= AVFMTCTX_NOHEADER;
778 
779  offset = avio_rb32(s->pb);
780  avio_seek(s->pb, offset, SEEK_SET);
781 
782  /* Annex E. The FLV File Format
783  * E.3 TheFLVFileBody
784  * Field Type Comment
785  * PreviousTagSize0 UI32 Always 0
786  * */
787  pre_tag_size = avio_rb32(s->pb);
788  if (pre_tag_size) {
789  av_log(s, AV_LOG_WARNING, "Read FLV header error, input file is not a standard flv format, first PreviousTagSize0 always is 0\n");
790  }
791 
792  s->start_time = 0;
793  flv->sum_flv_tag_size = 0;
794  flv->last_keyframe_stream_index = -1;
795 
796  return 0;
797 }
798 
800 {
801  int i;
802  FLVContext *flv = s->priv_data;
803  for (i=0; i<FLV_STREAM_TYPE_NB; i++)
804  av_freep(&flv->new_extradata[i]);
805  av_freep(&flv->keyframe_times);
807  return 0;
808 }
809 
811 {
812  int ret;
813  if (!size)
814  return 0;
815 
816  if ((ret = ff_get_extradata(s, st->codecpar, s->pb, size)) < 0)
817  return ret;
818  st->internal->need_context_update = 1;
819  return 0;
820 }
821 
822 static int flv_queue_extradata(FLVContext *flv, AVIOContext *pb, int stream,
823  int size)
824 {
825  if (!size)
826  return 0;
827 
828  av_free(flv->new_extradata[stream]);
829  flv->new_extradata[stream] = av_mallocz(size +
831  if (!flv->new_extradata[stream])
832  return AVERROR(ENOMEM);
833  flv->new_extradata_size[stream] = size;
834  avio_read(pb, flv->new_extradata[stream], size);
835  return 0;
836 }
837 
838 static void clear_index_entries(AVFormatContext *s, int64_t pos)
839 {
840  int i, j, out;
842  "Found invalid index entries, clearing the index.\n");
843  for (i = 0; i < s->nb_streams; i++) {
844  AVStream *st = s->streams[i];
845  /* Remove all index entries that point to >= pos */
846  out = 0;
847  for (j = 0; j < st->nb_index_entries; j++)
848  if (st->index_entries[j].pos < pos)
849  st->index_entries[out++] = st->index_entries[j];
850  st->nb_index_entries = out;
851  }
852 }
853 
854 static int amf_skip_tag(AVIOContext *pb, AMFDataType type, int depth)
855 {
856  int nb = -1, ret, parse_name = 1;
857 
858  if (depth > MAX_DEPTH)
859  return AVERROR_PATCHWELCOME;
860 
861  if (avio_feof(pb))
862  return AVERROR_EOF;
863 
864  switch (type) {
866  avio_skip(pb, 8);
867  break;
868  case AMF_DATA_TYPE_BOOL:
869  avio_skip(pb, 1);
870  break;
872  avio_skip(pb, avio_rb16(pb));
873  break;
874  case AMF_DATA_TYPE_ARRAY:
875  parse_name = 0;
877  nb = avio_rb32(pb);
878  if (nb < 0)
879  return AVERROR_INVALIDDATA;
881  while(!pb->eof_reached && (nb-- > 0 || type != AMF_DATA_TYPE_ARRAY)) {
882  if (parse_name) {
883  int size = avio_rb16(pb);
884  if (!size) {
885  avio_skip(pb, 1);
886  break;
887  }
888  avio_skip(pb, size);
889  }
890  if ((ret = amf_skip_tag(pb, avio_r8(pb), depth + 1)) < 0)
891  return ret;
892  }
893  break;
894  case AMF_DATA_TYPE_NULL:
896  break;
897  default:
898  return AVERROR_INVALIDDATA;
899  }
900  return 0;
901 }
902 
904  int64_t dts, int64_t next)
905 {
906  AVIOContext *pb = s->pb;
907  AVStream *st = NULL;
908  char buf[20];
909  int ret = AVERROR_INVALIDDATA;
910  int i, length = -1;
911  int array = 0;
912 
913  switch (avio_r8(pb)) {
914  case AMF_DATA_TYPE_ARRAY:
915  array = 1;
917  avio_seek(pb, 4, SEEK_CUR);
919  break;
920  default:
921  goto skip;
922  }
923 
924  while (array || (ret = amf_get_string(pb, buf, sizeof(buf))) > 0) {
925  AMFDataType type = avio_r8(pb);
926  if (type == AMF_DATA_TYPE_STRING && (array || !strcmp(buf, "text"))) {
927  length = avio_rb16(pb);
928  ret = av_get_packet(pb, pkt, length);
929  if (ret < 0)
930  goto skip;
931  else
932  break;
933  } else {
934  if ((ret = amf_skip_tag(pb, type, 0)) < 0)
935  goto skip;
936  }
937  }
938 
939  if (length < 0) {
940  ret = AVERROR_INVALIDDATA;
941  goto skip;
942  }
943 
944  for (i = 0; i < s->nb_streams; i++) {
945  st = s->streams[i];
947  break;
948  }
949 
950  if (i == s->nb_streams) {
952  if (!st)
953  return AVERROR(ENOMEM);
955  }
956 
957  pkt->dts = dts;
958  pkt->pts = dts;
959  pkt->size = ret;
960 
961  pkt->stream_index = st->index;
963 
964 skip:
965  avio_seek(s->pb, next + 4, SEEK_SET);
966 
967  return ret;
968 }
969 
971 {
972  FLVContext *flv = s->priv_data;
973  int64_t i;
974  int64_t pos = avio_tell(s->pb);
975 
976  for (i=0; !avio_feof(s->pb); i++) {
977  int j = i & (RESYNC_BUFFER_SIZE-1);
978  int j1 = j + RESYNC_BUFFER_SIZE;
979  flv->resync_buffer[j ] =
980  flv->resync_buffer[j1] = avio_r8(s->pb);
981 
982  if (i >= 8 && pos) {
983  uint8_t *d = flv->resync_buffer + j1 - 8;
984  if (d[0] == 'F' &&
985  d[1] == 'L' &&
986  d[2] == 'V' &&
987  d[3] < 5 && d[5] == 0) {
988  av_log(s, AV_LOG_WARNING, "Concatenated FLV detected, might fail to demux, decode and seek %"PRId64"\n", flv->last_ts);
989  flv->time_offset = flv->last_ts + 1;
990  flv->time_pos = avio_tell(s->pb);
991  }
992  }
993 
994  if (i > 22) {
995  unsigned lsize2 = AV_RB32(flv->resync_buffer + j1 - 4);
996  if (lsize2 >= 11 && lsize2 + 8LL < FFMIN(i, RESYNC_BUFFER_SIZE)) {
997  unsigned size2 = AV_RB24(flv->resync_buffer + j1 - lsize2 + 1 - 4);
998  unsigned lsize1 = AV_RB32(flv->resync_buffer + j1 - lsize2 - 8);
999  if (lsize1 >= 11 && lsize1 + 8LL + lsize2 < FFMIN(i, RESYNC_BUFFER_SIZE)) {
1000  unsigned size1 = AV_RB24(flv->resync_buffer + j1 - lsize1 + 1 - lsize2 - 8);
1001  if (size1 == lsize1 - 11 && size2 == lsize2 - 11) {
1002  avio_seek(s->pb, pos + i - lsize1 - lsize2 - 8, SEEK_SET);
1003  return 1;
1004  }
1005  }
1006  }
1007  }
1008  }
1009  return AVERROR_EOF;
1010 }
1011 
1013 {
1014  FLVContext *flv = s->priv_data;
1015  int ret, i, size, flags;
1016  enum FlvTagType type;
1017  int stream_type=-1;
1018  int64_t next, pos, meta_pos;
1019  int64_t dts, pts = AV_NOPTS_VALUE;
1020  int av_uninit(channels);
1021  int av_uninit(sample_rate);
1022  AVStream *st = NULL;
1023  int last = -1;
1024  int orig_size;
1025 
1026 retry:
1027  /* pkt size is repeated at end. skip it */
1028  pos = avio_tell(s->pb);
1029  type = (avio_r8(s->pb) & 0x1F);
1030  orig_size =
1031  size = avio_rb24(s->pb);
1032  flv->sum_flv_tag_size += size + 11;
1033  dts = avio_rb24(s->pb);
1034  dts |= (unsigned)avio_r8(s->pb) << 24;
1035  av_log(s, AV_LOG_TRACE, "type:%d, size:%d, last:%d, dts:%"PRId64" pos:%"PRId64"\n", type, size, last, dts, avio_tell(s->pb));
1036  if (avio_feof(s->pb))
1037  return AVERROR_EOF;
1038  avio_skip(s->pb, 3); /* stream id, always 0 */
1039  flags = 0;
1040 
1041  if (flv->validate_next < flv->validate_count) {
1042  int64_t validate_pos = flv->validate_index[flv->validate_next].pos;
1043  if (pos == validate_pos) {
1044  if (FFABS(dts - flv->validate_index[flv->validate_next].dts) <=
1046  flv->validate_next++;
1047  } else {
1048  clear_index_entries(s, validate_pos);
1049  flv->validate_count = 0;
1050  }
1051  } else if (pos > validate_pos) {
1052  clear_index_entries(s, validate_pos);
1053  flv->validate_count = 0;
1054  }
1055  }
1056 
1057  if (size == 0) {
1058  ret = FFERROR_REDO;
1059  goto leave;
1060  }
1061 
1062  next = size + avio_tell(s->pb);
1063 
1064  if (type == FLV_TAG_TYPE_AUDIO) {
1065  stream_type = FLV_STREAM_TYPE_AUDIO;
1066  flags = avio_r8(s->pb);
1067  size--;
1068  } else if (type == FLV_TAG_TYPE_VIDEO) {
1069  stream_type = FLV_STREAM_TYPE_VIDEO;
1070  flags = avio_r8(s->pb);
1071  size--;
1073  goto skip;
1074  } else if (type == FLV_TAG_TYPE_META) {
1075  stream_type=FLV_STREAM_TYPE_SUBTITLE;
1076  if (size > 13 + 1 + 4) { // Header-type metadata stuff
1077  int type;
1078  meta_pos = avio_tell(s->pb);
1079  type = flv_read_metabody(s, next);
1080  if (type == 0 && dts == 0 || type < 0) {
1081  if (type < 0 && flv->validate_count &&
1082  flv->validate_index[0].pos > next &&
1083  flv->validate_index[0].pos - 4 < next) {
1084  av_log(s, AV_LOG_WARNING, "Adjusting next position due to index mismatch\n");
1085  next = flv->validate_index[0].pos - 4;
1086  }
1087  goto skip;
1088  } else if (type == TYPE_ONTEXTDATA) {
1089  avpriv_request_sample(s, "OnTextData packet");
1090  return flv_data_packet(s, pkt, dts, next);
1091  } else if (type == TYPE_ONCAPTION) {
1092  return flv_data_packet(s, pkt, dts, next);
1093  } else if (type == TYPE_UNKNOWN) {
1094  stream_type = FLV_STREAM_TYPE_DATA;
1095  }
1096  avio_seek(s->pb, meta_pos, SEEK_SET);
1097  }
1098  } else {
1100  "Skipping flv packet: type %d, size %d, flags %d.\n",
1101  type, size, flags);
1102 skip:
1103  if (avio_seek(s->pb, next, SEEK_SET) != next) {
1104  // This can happen if flv_read_metabody above read past
1105  // next, on a non-seekable input, and the preceding data has
1106  // been flushed out from the IO buffer.
1107  av_log(s, AV_LOG_ERROR, "Unable to seek to the next packet\n");
1108  return AVERROR_INVALIDDATA;
1109  }
1110  ret = FFERROR_REDO;
1111  goto leave;
1112  }
1113 
1114  /* skip empty data packets */
1115  if (!size) {
1116  ret = FFERROR_REDO;
1117  goto leave;
1118  }
1119 
1120  /* now find stream */
1121  for (i = 0; i < s->nb_streams; i++) {
1122  st = s->streams[i];
1123  if (stream_type == FLV_STREAM_TYPE_AUDIO) {
1124  if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO &&
1125  (s->audio_codec_id || flv_same_audio_codec(st->codecpar, flags)))
1126  break;
1127  } else if (stream_type == FLV_STREAM_TYPE_VIDEO) {
1128  if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO &&
1129  (s->video_codec_id || flv_same_video_codec(st->codecpar, flags)))
1130  break;
1131  } else if (stream_type == FLV_STREAM_TYPE_SUBTITLE) {
1133  break;
1134  } else if (stream_type == FLV_STREAM_TYPE_DATA) {
1136  break;
1137  }
1138  }
1139  if (i == s->nb_streams) {
1141  st = create_stream(s, stream_types[stream_type]);
1142  if (!st)
1143  return AVERROR(ENOMEM);
1144  }
1145  av_log(s, AV_LOG_TRACE, "%d %X %d \n", stream_type, flags, st->discard);
1146 
1147  if (flv->time_pos <= pos) {
1148  dts += flv->time_offset;
1149  }
1150 
1151  if ((s->pb->seekable & AVIO_SEEKABLE_NORMAL) &&
1153  stream_type == FLV_STREAM_TYPE_AUDIO))
1155 
1156  if ((st->discard >= AVDISCARD_NONKEY && !((flags & FLV_VIDEO_FRAMETYPE_MASK) == FLV_FRAME_KEY || stream_type == FLV_STREAM_TYPE_AUDIO)) ||
1158  st->discard >= AVDISCARD_ALL) {
1159  avio_seek(s->pb, next, SEEK_SET);
1160  ret = FFERROR_REDO;
1161  goto leave;
1162  }
1163 
1164  // if not streamed and no duration from metadata then seek to end to find
1165  // the duration from the timestamps
1166  if ((s->pb->seekable & AVIO_SEEKABLE_NORMAL) &&
1167  (!s->duration || s->duration == AV_NOPTS_VALUE) &&
1168  !flv->searched_for_end) {
1169  int size;
1170  const int64_t pos = avio_tell(s->pb);
1171  // Read the last 4 bytes of the file, this should be the size of the
1172  // previous FLV tag. Use the timestamp of its payload as duration.
1173  int64_t fsize = avio_size(s->pb);
1174 retry_duration:
1175  avio_seek(s->pb, fsize - 4, SEEK_SET);
1176  size = avio_rb32(s->pb);
1177  if (size > 0 && size < fsize) {
1178  // Seek to the start of the last FLV tag at position (fsize - 4 - size)
1179  // but skip the byte indicating the type.
1180  avio_seek(s->pb, fsize - 3 - size, SEEK_SET);
1181  if (size == avio_rb24(s->pb) + 11) {
1182  uint32_t ts = avio_rb24(s->pb);
1183  ts |= (unsigned)avio_r8(s->pb) << 24;
1184  if (ts)
1185  s->duration = ts * (int64_t)AV_TIME_BASE / 1000;
1186  else if (fsize >= 8 && fsize - 8 >= size) {
1187  fsize -= size+4;
1188  goto retry_duration;
1189  }
1190  }
1191  }
1192 
1193  avio_seek(s->pb, pos, SEEK_SET);
1194  flv->searched_for_end = 1;
1195  }
1196 
1197  if (stream_type == FLV_STREAM_TYPE_AUDIO) {
1198  int bits_per_coded_sample;
1200  sample_rate = 44100 << ((flags & FLV_AUDIO_SAMPLERATE_MASK) >>
1202  bits_per_coded_sample = (flags & FLV_AUDIO_SAMPLESIZE_MASK) ? 16 : 8;
1203  if (!st->codecpar->channels || !st->codecpar->sample_rate ||
1205  st->codecpar->channels = channels;
1206  st->codecpar->channel_layout = channels == 1
1210  st->codecpar->bits_per_coded_sample = bits_per_coded_sample;
1211  }
1212  if (!st->codecpar->codec_id) {
1213  flv_set_audio_codec(s, st, st->codecpar,
1215  flv->last_sample_rate =
1217  flv->last_channels =
1218  channels = st->codecpar->channels;
1219  } else {
1221  if (!par) {
1222  ret = AVERROR(ENOMEM);
1223  goto leave;
1224  }
1225  par->sample_rate = sample_rate;
1226  par->bits_per_coded_sample = bits_per_coded_sample;
1228  sample_rate = par->sample_rate;
1230  }
1231  } else if (stream_type == FLV_STREAM_TYPE_VIDEO) {
1232  int ret = flv_set_video_codec(s, st, flags & FLV_VIDEO_CODECID_MASK, 1);
1233  if (ret < 0)
1234  return ret;
1235  size -= ret;
1236  } else if (stream_type == FLV_STREAM_TYPE_SUBTITLE) {
1238  } else if (stream_type == FLV_STREAM_TYPE_DATA) {
1239  st->codecpar->codec_id = AV_CODEC_ID_NONE; // Opaque AMF data
1240  }
1241 
1242  if (st->codecpar->codec_id == AV_CODEC_ID_AAC ||
1245  int type = avio_r8(s->pb);
1246  size--;
1247 
1248  if (size < 0) {
1249  ret = AVERROR_INVALIDDATA;
1250  goto leave;
1251  }
1252 
1254  // sign extension
1255  int32_t cts = (avio_rb24(s->pb) + 0xff800000) ^ 0xff800000;
1256  pts = av_sat_add64(dts, cts);
1257  if (cts < 0) { // dts might be wrong
1258  if (!flv->wrong_dts)
1260  "Negative cts, previous timestamps might be wrong.\n");
1261  flv->wrong_dts = 1;
1262  } else if (FFABS(dts - pts) > 1000*60*15) {
1264  "invalid timestamps %"PRId64" %"PRId64"\n", dts, pts);
1265  dts = pts = AV_NOPTS_VALUE;
1266  }
1267  }
1268  if (type == 0 && (!st->codecpar->extradata || st->codecpar->codec_id == AV_CODEC_ID_AAC ||
1269  st->codecpar->codec_id == AV_CODEC_ID_H264)) {
1270  AVDictionaryEntry *t;
1271 
1272  if (st->codecpar->extradata) {
1273  if ((ret = flv_queue_extradata(flv, s->pb, stream_type, size)) < 0)
1274  return ret;
1275  ret = FFERROR_REDO;
1276  goto leave;
1277  }
1278  if ((ret = flv_get_extradata(s, st, size)) < 0)
1279  return ret;
1280 
1281  /* Workaround for buggy Omnia A/XE encoder */
1282  t = av_dict_get(s->metadata, "Encoder", NULL, 0);
1283  if (st->codecpar->codec_id == AV_CODEC_ID_AAC && t && !strcmp(t->value, "Omnia A/XE"))
1284  st->codecpar->extradata_size = 2;
1285 
1286  ret = FFERROR_REDO;
1287  goto leave;
1288  }
1289  }
1290 
1291  /* skip empty data packets */
1292  if (!size) {
1293  ret = FFERROR_REDO;
1294  goto leave;
1295  }
1296 
1297  ret = av_get_packet(s->pb, pkt, size);
1298  if (ret < 0)
1299  return ret;
1300  pkt->dts = dts;
1301  pkt->pts = pts == AV_NOPTS_VALUE ? dts : pts;
1302  pkt->stream_index = st->index;
1303  pkt->pos = pos;
1304  if (flv->new_extradata[stream_type]) {
1306  flv->new_extradata[stream_type],
1307  flv->new_extradata_size[stream_type]);
1308  if (ret >= 0) {
1309  flv->new_extradata[stream_type] = NULL;
1310  flv->new_extradata_size[stream_type] = 0;
1311  }
1312  }
1313  if (stream_type == FLV_STREAM_TYPE_AUDIO &&
1314  (sample_rate != flv->last_sample_rate ||
1315  channels != flv->last_channels)) {
1317  flv->last_channels = channels;
1319  }
1320 
1321  if (stream_type == FLV_STREAM_TYPE_AUDIO ||
1323  stream_type == FLV_STREAM_TYPE_SUBTITLE ||
1324  stream_type == FLV_STREAM_TYPE_DATA)
1326 
1327 leave:
1328  last = avio_rb32(s->pb);
1329  if (!flv->trust_datasize) {
1330  if (last != orig_size + 11 && last != orig_size + 10 &&
1331  !avio_feof(s->pb) &&
1332  (last != orig_size || !last) && last != flv->sum_flv_tag_size &&
1333  !flv->broken_sizes) {
1334  av_log(s, AV_LOG_ERROR, "Packet mismatch %d %d %d\n", last, orig_size + 11, flv->sum_flv_tag_size);
1335  avio_seek(s->pb, pos + 1, SEEK_SET);
1336  ret = resync(s);
1338  if (ret >= 0) {
1339  goto retry;
1340  }
1341  }
1342  }
1343 
1344  if (ret >= 0)
1345  flv->last_ts = pkt->dts;
1346 
1347  return ret;
1348 }
1349 
1350 static int flv_read_seek(AVFormatContext *s, int stream_index,
1351  int64_t ts, int flags)
1352 {
1353  FLVContext *flv = s->priv_data;
1354  flv->validate_count = 0;
1355  return avio_seek_time(s->pb, stream_index, ts, flags);
1356 }
1357 
1358 #define OFFSET(x) offsetof(FLVContext, x)
1359 #define VD AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_DECODING_PARAM
1360 static const AVOption options[] = {
1361  { "flv_metadata", "Allocate streams according to the onMetaData array", OFFSET(trust_metadata), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VD },
1362  { "flv_full_metadata", "Dump full metadata of the onMetadata", OFFSET(dump_full_metadata), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VD },
1363  { "flv_ignore_prevtag", "Ignore the Size of previous tag", OFFSET(trust_datasize), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, VD },
1364  { "missing_streams", "", OFFSET(missing_streams), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 0xFF, VD | AV_OPT_FLAG_EXPORT | AV_OPT_FLAG_READONLY },
1365  { NULL }
1366 };
1367 
1368 static const AVClass flv_class = {
1369  .class_name = "flvdec",
1370  .item_name = av_default_item_name,
1371  .option = options,
1372  .version = LIBAVUTIL_VERSION_INT,
1373 };
1374 
1376  .name = "flv",
1377  .long_name = NULL_IF_CONFIG_SMALL("FLV (Flash Video)"),
1378  .priv_data_size = sizeof(FLVContext),
1379  .read_probe = flv_probe,
1384  .extensions = "flv",
1385  .priv_class = &flv_class,
1386 };
1387 
1388 static const AVClass live_flv_class = {
1389  .class_name = "live_flvdec",
1390  .item_name = av_default_item_name,
1391  .option = options,
1392  .version = LIBAVUTIL_VERSION_INT,
1393 };
1394 
1396  .name = "live_flv",
1397  .long_name = NULL_IF_CONFIG_SMALL("live RTMP FLV (Flash Video)"),
1398  .priv_data_size = sizeof(FLVContext),
1404  .extensions = "flv",
1405  .priv_class = &live_flv_class,
1407 };
1408 
1409 static const AVClass kux_class = {
1410  .class_name = "kuxdec",
1411  .item_name = av_default_item_name,
1412  .option = options,
1413  .version = LIBAVUTIL_VERSION_INT,
1414 };
1415 
1417  .name = "kux",
1418  .long_name = NULL_IF_CONFIG_SMALL("KUX (YouKu)"),
1419  .priv_data_size = sizeof(FLVContext),
1420  .read_probe = kux_probe,
1425  .extensions = "kux",
1426  .priv_class = &kux_class,
1427 };
channels
Definition: aptx.h:33
#define av_unused
Definition: attributes.h:131
#define av_uninit(x)
Definition: attributes.h:154
uint8_t
int32_t
static int64_t fsize(FILE *f)
Definition: audiomatch.c:29
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
Main libavformat public API header.
#define AVFMT_EVENT_FLAG_METADATA_UPDATED
Definition: avformat.h:1562
#define AVINDEX_KEYFRAME
Definition: avformat.h:811
#define AVPROBE_SCORE_MAX
maximum score
Definition: avformat.h:453
#define AVFMT_FLAG_IGNIDX
Ignore index.
Definition: avformat.h:1365
#define AVFMTCTX_NOHEADER
signal that no header is present (streams are added dynamically)
Definition: avformat.h:1177
#define AVFMT_TS_DISCONT
Format allows timestamp discontinuities.
Definition: avformat.h:464
#define AVPROBE_SCORE_EXTENSION
score for file extension
Definition: avformat.h:451
int av_get_packet(AVIOContext *s, AVPacket *pkt, int size)
Allocate and read the payload of a packet and initialize its fields with default values.
Definition: utils.c:310
@ AVSTREAM_PARSE_HEADERS
Only parse headers, do not repack.
Definition: avformat.h:795
@ AVSTREAM_PARSE_FULL
full parsing and repack
Definition: avformat.h:794
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:253
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
Definition: avio.h:40
uint64_t avio_rb64(AVIOContext *s)
Definition: aviobuf.c:902
int64_t avio_size(AVIOContext *s)
Get the filesize.
Definition: aviobuf.c:342
unsigned int avio_rb16(AVIOContext *s)
Definition: aviobuf.c:766
int avio_feof(AVIOContext *s)
Similar to feof() but also returns nonzero on read errors.
Definition: aviobuf.c:364
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:557
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
Definition: aviobuf.c:337
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:633
int64_t avio_seek_time(AVIOContext *h, int stream_index, int64_t timestamp, int flags)
Seek to a given timestamp relative to some component stream.
Definition: aviobuf.c:1231
unsigned int avio_rb24(AVIOContext *s)
Definition: aviobuf.c:774
unsigned int avio_rb32(AVIOContext *s)
Definition: aviobuf.c:781
int avio_r8(AVIOContext *s)
Definition: aviobuf.c:624
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
Definition: avio_reading.c:42
#define AV_RB24
Definition: intreadwrite.h:64
#define AV_RB32
Definition: intreadwrite.h:130
#define flags(name, subs,...)
Definition: cbs_av1.c:561
#define s(width, name)
Definition: cbs_vp9.c:257
audio channel layout utility functions
AVCodecParameters * avcodec_parameters_alloc(void)
Allocate a new AVCodecParameters and set its fields to default values (unknown/invalid/0).
Definition: codec_par.c:51
void avcodec_parameters_free(AVCodecParameters **ppar)
Free an AVCodecParameters instance and everything associated with it and write NULL to the supplied p...
Definition: codec_par.c:61
#define FFMIN(a, b)
Definition: common.h:105
#define av_sat_add64
Definition: common.h:164
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition: common.h:72
#define NULL
Definition: coverity.c:32
Public dictionary API.
int
sample_rate
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:527
static const int32_t max_pos[4]
Size of the MP-MLQ fixed excitation codebooks.
Definition: g723_1dec.c:97
@ AV_OPT_TYPE_INT
Definition: opt.h:225
@ AV_OPT_TYPE_BOOL
Definition: opt.h:242
#define AV_CH_LAYOUT_MONO
#define AV_CH_LAYOUT_STEREO
AVCodecID
Identify the syntax and semantics of the bitstream.
Definition: codec_id.h:46
@ AV_CODEC_ID_ADPCM_SWF
Definition: codec_id.h:366
@ AV_CODEC_ID_FLV1
Definition: codec_id.h:70
@ AV_CODEC_ID_VP6F
Definition: codec_id.h:141
@ AV_CODEC_ID_PCM_U8
Definition: codec_id.h:318
@ AV_CODEC_ID_PCM_S16LE
Definition: codec_id.h:313
@ AV_CODEC_ID_TEXT
raw UTF-8 text
Definition: codec_id.h:525
@ AV_CODEC_ID_H264
Definition: codec_id.h:76
@ AV_CODEC_ID_NONE
Definition: codec_id.h:47
@ AV_CODEC_ID_PCM_S16BE
Definition: codec_id.h:314
@ AV_CODEC_ID_FLASHSV2
Definition: codec_id.h:180
@ AV_CODEC_ID_PCM_ALAW
Definition: codec_id.h:320
@ AV_CODEC_ID_VP6A
Definition: codec_id.h:155
@ AV_CODEC_ID_AAC
Definition: codec_id.h:426
@ AV_CODEC_ID_NELLYMOSER
Definition: codec_id.h:457
@ AV_CODEC_ID_H263
Definition: codec_id.h:53
@ AV_CODEC_ID_MPEG4
Definition: codec_id.h:61
@ AV_CODEC_ID_SPEEX
Definition: codec_id.h:459
@ AV_CODEC_ID_MP3
preferred ID for decoding MPEG audio layer 1, 2 or 3
Definition: codec_id.h:425
@ AV_CODEC_ID_FLASHSV
Definition: codec_id.h:135
@ AV_CODEC_ID_PCM_MULAW
Definition: codec_id.h:319
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding.
Definition: avcodec.h:215
@ AVDISCARD_ALL
discard all
Definition: avcodec.h:236
@ AVDISCARD_NONKEY
discard all frames except keyframes
Definition: avcodec.h:235
@ AVDISCARD_BIDIR
discard all bidirectional frames
Definition: avcodec.h:233
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:634
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: packet.h:410
FF_ENABLE_DEPRECATION_WARNINGS int av_packet_add_side_data(AVPacket *pkt, enum AVPacketSideDataType type, uint8_t *data, size_t size)
Wrap an existing array as a packet side data.
Definition: avpacket.c:309
@ AV_PKT_DATA_NEW_EXTRADATA
The AV_PKT_DATA_NEW_EXTRADATA is used to notify the codec or the format that the extradata buffer was...
Definition: packet.h:55
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4505
int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp, int size, int distance, int flags)
Add an index entry into a sorted list.
Definition: utils.c:2011
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:70
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
Definition: dict.c:40
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
#define AVERROR_EOF
End of file.
Definition: error.h:55
#define AVERROR(e)
Definition: error.h:43
#define AV_LOG_TRACE
Extremely verbose debugging, useful for libav* development.
Definition: log.h:220
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:215
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:200
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
AVRational av_d2q(double d, int max)
Convert a double precision floating point number to a rational.
Definition: rational.c:106
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:237
AVMediaType
Definition: avutil.h:199
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
@ AVMEDIA_TYPE_SUBTITLE
Definition: avutil.h:204
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
@ AVMEDIA_TYPE_DATA
Opaque data information usually continuous.
Definition: avutil.h:203
size_t av_strlcpy(char *dst, const char *src, size_t size)
Copy the string src to dst, but no more than size - 1 bytes, and null-terminate dst.
Definition: avstring.c:83
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
#define AV_TIME_BASE
Internal time base represented as integer.
Definition: avutil.h:254
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
cl_device_type type
const char * key
int i
Definition: input.c:407
static av_always_inline double av_int2double(uint64_t i)
Reinterpret a 64-bit integer as a double.
Definition: intfloat.h:60
FLV common header.
FlvTagType
Definition: flv.h:59
@ FLV_TAG_TYPE_AUDIO
Definition: flv.h:60
@ FLV_TAG_TYPE_META
Definition: flv.h:62
@ FLV_TAG_TYPE_VIDEO
Definition: flv.h:61
#define FLV_VIDEO_FRAMETYPE_MASK
Definition: flv.h:45
#define FLV_AUDIO_SAMPLERATE_OFFSET
Definition: flv.h:33
#define KEYFRAMES_TIMESTAMP_TAG
Definition: flv.h:50
@ FLV_STEREO
Definition: flv.h:75
@ FLV_FRAME_DISP_INTER
disposable inter frame (H.263 only)
Definition: flv.h:118
@ FLV_FRAME_KEY
key frame (for AVC, a seekable frame)
Definition: flv.h:116
@ FLV_FRAME_VIDEO_INFO_CMD
video info/command frame
Definition: flv.h:120
@ FLV_CODECID_NELLYMOSER_16KHZ_MONO
Definition: flv.h:95
@ FLV_CODECID_PCM
Definition: flv.h:91
@ FLV_CODECID_AAC
Definition: flv.h:100
@ FLV_CODECID_MP3
Definition: flv.h:93
@ FLV_CODECID_PCM_LE
Definition: flv.h:94
@ FLV_CODECID_NELLYMOSER
Definition: flv.h:97
@ FLV_CODECID_PCM_MULAW
Definition: flv.h:99
@ FLV_CODECID_PCM_ALAW
Definition: flv.h:98
@ FLV_CODECID_SPEEX
Definition: flv.h:101
@ FLV_CODECID_ADPCM
Definition: flv.h:92
@ FLV_CODECID_NELLYMOSER_8KHZ_MONO
Definition: flv.h:96
AMFDataType
Definition: flv.h:123
@ AMF_DATA_TYPE_OBJECT_END
Definition: flv.h:132
@ AMF_DATA_TYPE_OBJECT
Definition: flv.h:127
@ AMF_DATA_TYPE_BOOL
Definition: flv.h:125
@ AMF_DATA_TYPE_NUMBER
Definition: flv.h:124
@ AMF_DATA_TYPE_MIXEDARRAY
Definition: flv.h:131
@ AMF_DATA_TYPE_UNSUPPORTED
Definition: flv.h:136
@ AMF_DATA_TYPE_NULL
Definition: flv.h:128
@ AMF_DATA_TYPE_STRING
Definition: flv.h:126
@ AMF_DATA_TYPE_UNDEFINED
Definition: flv.h:129
@ AMF_DATA_TYPE_ARRAY
Definition: flv.h:133
@ AMF_DATA_TYPE_DATE
Definition: flv.h:134
#define FLV_AUDIO_SAMPLESIZE_MASK
Definition: flv.h:40
#define KEYFRAMES_TAG
Definition: flv.h:49
#define FLV_AUDIO_CODECID_MASK
Definition: flv.h:42
#define KEYFRAMES_BYTEOFFSET_TAG
Definition: flv.h:51
#define AMF_END_OF_OBJECT
Definition: flv.h:47
@ FLV_STREAM_TYPE_AUDIO
Definition: flv.h:67
@ FLV_STREAM_TYPE_DATA
Definition: flv.h:69
@ FLV_STREAM_TYPE_SUBTITLE
Definition: flv.h:68
@ FLV_STREAM_TYPE_NB
Definition: flv.h:70
@ FLV_STREAM_TYPE_VIDEO
Definition: flv.h:66
@ FLV_HEADER_FLAG_HASVIDEO
Definition: flv.h:55
@ FLV_HEADER_FLAG_HASAUDIO
Definition: flv.h:56
@ FLV_CODECID_SCREEN2
Definition: flv.h:109
@ FLV_CODECID_MPEG4
Definition: flv.h:112
@ FLV_CODECID_VP6A
Definition: flv.h:108
@ FLV_CODECID_SCREEN
Definition: flv.h:106
@ FLV_CODECID_REALH263
Definition: flv.h:111
@ FLV_CODECID_H263
Definition: flv.h:105
@ FLV_CODECID_VP6
Definition: flv.h:107
@ FLV_CODECID_H264
Definition: flv.h:110
#define FLV_AUDIO_CODECID_OFFSET
Definition: flv.h:34
#define FLV_AUDIO_SAMPLERATE_MASK
Definition: flv.h:41
#define FLV_VIDEO_CODECID_MASK
Definition: flv.h:44
#define FLV_AUDIO_CHANNEL_MASK
Definition: flv.h:39
static int flv_read_metabody(AVFormatContext *s, int64_t next_pos)
Definition: flvdec.c:704
static const AVClass kux_class
Definition: flvdec.c:1409
static void add_keyframes_index(AVFormatContext *s)
Definition: flvdec.c:131
static int flv_read_header(AVFormatContext *s)
Definition: flvdec.c:761
static AVStream * create_stream(AVFormatContext *s, int codec_type)
Definition: flvdec.c:162
static void flv_set_audio_codec(AVFormatContext *s, AVStream *astream, AVCodecParameters *apar, int flv_codecid)
Definition: flvdec.c:243
static int flv_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: flvdec.c:1012
#define RESYNC_BUFFER_SIZE
Definition: flvdec.c:42
static const AVOption options[]
Definition: flvdec.c:1360
AVInputFormat ff_flv_demuxer
Definition: flvdec.c:1375
static int amf_parse_object(AVFormatContext *s, AVStream *astream, AVStream *vstream, const char *key, int64_t max_pos, int depth)
Definition: flvdec.c:495
static const AVClass flv_class
Definition: flvdec.c:1368
static int flv_set_video_codec(AVFormatContext *s, AVStream *vstream, int flv_codecid, int read)
Definition: flvdec.c:328
static int flv_get_extradata(AVFormatContext *s, AVStream *st, int size)
Definition: flvdec.c:810
#define MAX_DEPTH
arbitrary limit to prevent unbounded recursion
Definition: flvdec.c:44
static int kux_probe(const AVProbeData *p)
Definition: flvdec.c:117
#define TYPE_UNKNOWN
Definition: flvdec.c:702
static int amf_get_string(AVIOContext *ioc, char *buffer, int buffsize)
Definition: flvdec.c:385
#define TYPE_ONCAPTIONINFO
Definition: flvdec.c:701
#define VALIDATE_INDEX_TS_THRESH
Definition: flvdec.c:40
static int flv_same_audio_codec(AVCodecParameters *apar, int flags)
Definition: flvdec.c:192
static int flv_same_video_codec(AVCodecParameters *vpar, int flags)
Definition: flvdec.c:303
static int parse_keyframes_index(AVFormatContext *s, AVIOContext *ioc, int64_t max_pos)
Definition: flvdec.c:405
#define TYPE_ONTEXTDATA
Definition: flvdec.c:699
AVInputFormat ff_kux_demuxer
Definition: flvdec.c:1416
static const AVClass live_flv_class
Definition: flvdec.c:1388
#define TYPE_ONCAPTION
Definition: flvdec.c:700
static int flv_data_packet(AVFormatContext *s, AVPacket *pkt, int64_t dts, int64_t next)
Definition: flvdec.c:903
static int resync(AVFormatContext *s)
Definition: flvdec.c:970
static int flv_probe(const AVProbeData *p)
Definition: flvdec.c:107
#define VD
Definition: flvdec.c:1359
static int probe(const AVProbeData *p, int live)
Definition: flvdec.c:88
static int flv_queue_extradata(FLVContext *flv, AVIOContext *pb, int stream, int size)
Definition: flvdec.c:822
AVInputFormat ff_live_flv_demuxer
Definition: flvdec.c:1395
static int live_flv_probe(const AVProbeData *p)
Definition: flvdec.c:112
#define OFFSET(x)
Definition: flvdec.c:1358
static void clear_index_entries(AVFormatContext *s, int64_t pos)
Definition: flvdec.c:838
static int flv_read_close(AVFormatContext *s)
Definition: flvdec.c:799
static int amf_skip_tag(AVIOContext *pb, AMFDataType type, int depth)
Definition: flvdec.c:854
static int flv_read_seek(AVFormatContext *s, int stream_index, int64_t ts, int flags)
Definition: flvdec.c:1350
void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits, unsigned int pts_num, unsigned int pts_den)
Set the time base and wrapping info for a given stream.
Definition: utils.c:4941
int ff_alloc_extradata(AVCodecParameters *par, int size)
Allocate extradata with additional AV_INPUT_BUFFER_PADDING_SIZE at end which is always set to 0.
Definition: utils.c:3312
int ff_add_param_change(AVPacket *pkt, int32_t channels, uint64_t channel_layout, int32_t sample_rate, int32_t width, int32_t height)
Add side data to a packet for changing parameters to the given values.
Definition: utils.c:5073
#define FFERROR_REDO
Returned by demuxers to indicate that data was consumed but discarded (ignored streams or junk data).
Definition: internal.h:793
int ff_get_extradata(AVFormatContext *s, AVCodecParameters *par, AVIOContext *pb, int size)
Allocate extradata with additional AV_INPUT_BUFFER_PADDING_SIZE at end which is always set to 0 and f...
Definition: utils.c:3330
static int read_probe(const AVProbeData *pd)
Definition: jvdec.c:55
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
static av_cold int read_close(AVFormatContext *ctx)
Definition: libcdio.c:145
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
Definition: libcdio.c:153
version
Definition: libkvazaar.c:320
#define isnan(x)
Definition: libm.h:340
AVOptions.
#define AV_OPT_FLAG_READONLY
The option may not be set through the AVOptions API, only read.
Definition: opt.h:291
#define AV_OPT_FLAG_EXPORT
The option is intended for exporting values to the caller.
Definition: opt.h:286
enum AVMediaType codec_type
Definition: rtp.c:37
static char buffer[20]
Definition: seek.c:32
#define snprintf
Definition: snprintf.h:34
unsigned int pos
Definition: spdifenc.c:412
Describe the class of an AVClass context structure.
Definition: log.h:67
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
This struct describes the properties of an encoded stream.
Definition: codec_par.h:52
int extradata_size
Size of the extradata content in bytes.
Definition: codec_par.h:78
uint64_t channel_layout
Audio only.
Definition: codec_par.h:162
int bits_per_coded_sample
The number of bits per sample in the codedwords.
Definition: codec_par.h:102
int channels
Audio only.
Definition: codec_par.h:166
int width
Video only.
Definition: codec_par.h:126
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
Definition: codec_par.h:89
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:56
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: codec_par.h:64
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: codec_par.h:74
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:60
int sample_rate
Audio only.
Definition: codec_par.h:170
char * value
Definition: dict.h:83
Format I/O context.
Definition: avformat.h:1232
Bytestream IO Context.
Definition: avio.h:161
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Definition: avio.h:260
int eof_reached
true if was unable to read due to error or eof
Definition: avio.h:239
int64_t pos
Definition: avformat.h:804
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:645
AVOption.
Definition: opt.h:248
This structure stores compressed data.
Definition: packet.h:346
int stream_index
Definition: packet.h:371
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:375
int size
Definition: packet.h:370
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: packet.h:362
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed.
Definition: packet.h:368
int64_t pos
byte position in stream, -1 if unknown
Definition: packet.h:389
This structure contains the data a format has to probe a file.
Definition: avformat.h:441
int buf_size
Size of buf except extra allocated bytes.
Definition: avformat.h:444
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:443
Rational number (pair of numerator and denominator).
Definition: rational.h:58
int need_context_update
Whether the internal avctx needs to be updated from codecpar (after a late change to codecpar)
Definition: internal.h:200
Stream structure.
Definition: avformat.h:873
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1038
enum AVDiscard discard
Selects which packets can be discarded at will and do not need to be demuxed.
Definition: avformat.h:928
int index
stream index in AVFormatContext
Definition: avformat.h:874
int nb_index_entries
Definition: avformat.h:1092
AVRational avg_frame_rate
Average framerate.
Definition: avformat.h:946
AVIndexEntry * index_entries
Only used if the format does not support seeking natively.
Definition: avformat.h:1090
enum AVStreamParseType need_parsing
Definition: avformat.h:1081
AVStreamInternal * internal
An opaque field for libavformat internal usage.
Definition: avformat.h:1113
uint8_t resync_buffer[2 *RESYNC_BUFFER_SIZE]
Definition: flvdec.c:64
int wrong_dts
wrong dts due to negative cts
Definition: flvdec.c:51
int new_extradata_size[FLV_STREAM_TYPE_NB]
Definition: flvdec.c:53
int trust_datasize
trust data size of FLVTag
Definition: flvdec.c:49
int broken_sizes
Definition: flvdec.c:66
struct FLVContext::@255 validate_index[2]
int last_keyframe_stream_index
Definition: flvdec.c:69
uint8_t * new_extradata[FLV_STREAM_TYPE_NB]
Definition: flvdec.c:52
AVRational framerate
Definition: flvdec.c:76
int searched_for_end
Definition: flvdec.c:62
int keyframe_count
Definition: flvdec.c:70
int64_t * keyframe_filepositions
Definition: flvdec.c:74
int64_t pos
Definition: flvdec.c:58
int64_t last_ts
Definition: flvdec.c:77
int validate_next
Definition: flvdec.c:60
int validate_count
Definition: flvdec.c:61
int sum_flv_tag_size
Definition: flvdec.c:67
int dump_full_metadata
Dump full metadata of the onMetadata.
Definition: flvdec.c:50
int last_channels
Definition: flvdec.c:55
int trust_metadata
configure streams according onMetaData
Definition: flvdec.c:48
int64_t * keyframe_times
Definition: flvdec.c:73
int64_t time_pos
Definition: flvdec.c:79
int64_t time_offset
Definition: flvdec.c:78
int64_t video_bit_rate
Definition: flvdec.c:71
int64_t audio_bit_rate
Definition: flvdec.c:72
int64_t dts
Definition: flvdec.c:57
int missing_streams
Definition: flvdec.c:75
int last_sample_rate
Definition: flvdec.c:54
int16_t timezone
Definition: flvdec.c:85
double milliseconds
Definition: flvdec.c:84
#define av_free(p)
#define avpriv_request_sample(...)
#define av_freep(p)
#define av_log(a,...)
static int array[MAX_W *MAX_W]
Definition: jpeg2000dwt.c:106
FILE * out
Definition: movenc.c:54
AVPacket * pkt
Definition: movenc.c:59
static void finish(void)
Definition: movenc.c:342
#define localtime_r
Definition: time_internal.h:46
static int64_t pts
int size
enum AVCodecID codec_id
Definition: vaapi_decode.c:369
static const uint8_t offset[127][2]
Definition: vf_spp.c:107