FFmpeg
avienc.c
Go to the documentation of this file.
1 /*
2  * AVI muxer
3  * Copyright (c) 2000 Fabrice Bellard
4  *
5  * This file is part of FFmpeg.
6  *
7  * FFmpeg is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * FFmpeg is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
22 #include <math.h>
23 
24 #include "avformat.h"
25 #include "internal.h"
26 #include "avi.h"
27 #include "avio_internal.h"
28 #include "riff.h"
29 #include "mpegts.h"
30 #include "libavformat/avlanguage.h"
31 #include "libavutil/avstring.h"
32 #include "libavutil/avutil.h"
33 #include "libavutil/internal.h"
34 #include "libavutil/dict.h"
35 #include "libavutil/avassert.h"
36 #include "libavutil/timestamp.h"
37 #include "libavutil/opt.h"
38 #include "libavutil/pixdesc.h"
39 #include "libavcodec/raw.h"
40 
41 /*
42  * TODO:
43  * - fill all fields if non streamed (nb_frames for example)
44  */
45 
46 typedef struct AVIIentry {
47  char tag[4];
48  unsigned int flags;
49  unsigned int pos;
50  unsigned int len;
51 } AVIIentry;
52 
53 #define AVI_INDEX_CLUSTER_SIZE 16384
54 #define AVI_MASTER_INDEX_PREFIX_SIZE (8+2+1+1+4+8+4+4)
55 #define AVI_MASTER_INDEX_ENTRY_SIZE 16 /* bytes per entry */
56 #define AVI_MASTER_INDEX_SIZE_DEFAULT 256 /* number of entries */
57 
58 typedef struct AVIIndex {
59  int64_t indx_start;
61  int entry;
65 } AVIIndex;
66 
67 typedef struct AVIContext {
68  const AVClass *class;
71  int64_t frames_hdr_all;
72  int riff_id;
77 } AVIContext;
78 
79 typedef struct AVIStream {
80  int64_t frames_hdr_strm;
83  int entry;
84  int max_size;
86 
87  int64_t last_dts;
88 
90 
92 
95  int64_t pal_offset;
96 } AVIStream;
97 
99 
100 static inline AVIIentry *avi_get_ientry(const AVIIndex *idx, int ent_id)
101 {
102  int cl = ent_id / AVI_INDEX_CLUSTER_SIZE;
103  int id = ent_id % AVI_INDEX_CLUSTER_SIZE;
104  return &idx->cluster[cl][id];
105 }
106 
107 static int avi_add_ientry(AVFormatContext *s, int stream_index, char *tag,
108  unsigned int flags, unsigned int size)
109 {
110  AVIContext *avi = s->priv_data;
111  AVIOContext *pb = s->pb;
112  AVIStream *avist = s->streams[stream_index]->priv_data;
113  AVIIndex *idx = &avist->indexes;
114  int cl = idx->entry / AVI_INDEX_CLUSTER_SIZE;
115  int id = idx->entry % AVI_INDEX_CLUSTER_SIZE;
116 
117  if (idx->ents_allocated <= idx->entry) {
118  idx->cluster = av_realloc_f(idx->cluster, sizeof(void*), cl+1);
119  if (!idx->cluster) {
120  idx->ents_allocated = 0;
121  idx->entry = 0;
122  return AVERROR(ENOMEM);
123  }
124  idx->cluster[cl] =
126  if (!idx->cluster[cl])
127  return AVERROR(ENOMEM);
129  }
130 
131  if (tag)
132  memcpy(idx->cluster[cl][id].tag, tag, 4);
133  else
134  memset(idx->cluster[cl][id].tag, 0, 4);
135  idx->cluster[cl][id].flags = flags;
136  idx->cluster[cl][id].pos = avio_tell(pb) - avi->movi_list;
137  idx->cluster[cl][id].len = size;
138  avist->max_size = FFMAX(avist->max_size, size);
139  idx->entry++;
140 
141  return 0;
142 }
143 
144 static av_cold int avi_init(struct AVFormatContext *s)
145 {
146  AVIContext *avi = s->priv_data;
147 
148  if (avi->reserve_index_space > 0) {
151  } else
153  av_log(s, AV_LOG_DEBUG, "reserve_index_space:%d master_index_max_size:%d\n",
155 
156  return 1; /* stream initialization continues in avi_write_header */
157 }
158 
160  const char *riff_tag, const char *list_tag)
161 {
162  AVIContext *avi = s->priv_data;
163  int64_t loff;
164  int i;
165 
166  avi->riff_id++;
167  for (i = 0; i < s->nb_streams; i++) {
168  AVIStream *avist = s->streams[i]->priv_data;
170  avist->indexes.entry = 0;
171  }
172 
173  avi->riff_start = ff_start_tag(pb, "RIFF");
174  ffio_wfourcc(pb, riff_tag);
175  loff = ff_start_tag(pb, "LIST");
176  ffio_wfourcc(pb, list_tag);
177  return loff;
178 }
179 
180 static char *avi_stream2fourcc(char *tag, int index, enum AVMediaType type)
181 {
182  tag[0] = '0' + index / 10;
183  tag[1] = '0' + index % 10;
184  if (type == AVMEDIA_TYPE_VIDEO) {
185  tag[2] = 'd';
186  tag[3] = 'c';
187  } else if (type == AVMEDIA_TYPE_SUBTITLE) {
188  // note: this is not an official code
189  tag[2] = 's';
190  tag[3] = 'b';
191  } else {
192  tag[2] = 'w';
193  tag[3] = 'b';
194  }
195  tag[4] = '\0';
196  return tag;
197 }
198 
199 static int avi_write_counters(AVFormatContext *s, int riff_id)
200 {
201  AVIOContext *pb = s->pb;
202  AVIContext *avi = s->priv_data;
203  int n, au_byterate, au_ssize, au_scale, nb_frames = 0;
204  int64_t file_size;
205  AVCodecParameters *par;
206 
207  file_size = avio_tell(pb);
208  for (n = 0; n < s->nb_streams; n++) {
209  AVIStream *avist = s->streams[n]->priv_data;
210 
211  av_assert0(avist->frames_hdr_strm);
212  par = s->streams[n]->codecpar;
213  avio_seek(pb, avist->frames_hdr_strm, SEEK_SET);
214  ff_parse_specific_params(s->streams[n], &au_byterate, &au_ssize, &au_scale);
215  if (au_ssize == 0)
216  avio_wl32(pb, avist->packet_count);
217  else
218  avio_wl32(pb, avist->audio_strm_length / au_ssize);
219  if (par->codec_type == AVMEDIA_TYPE_VIDEO)
220  nb_frames = FFMAX(nb_frames, avist->packet_count);
221  }
222  if (riff_id == 1) {
224  avio_seek(pb, avi->frames_hdr_all, SEEK_SET);
225  avio_wl32(pb, nb_frames);
226  }
227  avio_seek(pb, file_size, SEEK_SET);
228 
229  return 0;
230 }
231 
232 static void write_odml_master(AVFormatContext *s, int stream_index)
233 {
234  AVIOContext *pb = s->pb;
235  AVIContext *avi = s->priv_data;
236  AVStream *st = s->streams[stream_index];
237  AVCodecParameters *par = st->codecpar;
238  AVIStream *avist = st->priv_data;
239  unsigned char tag[5];
240 
241  /* Starting to lay out AVI OpenDML master index.
242  * We want to make it JUNK entry for now, since we'd
243  * like to get away without making AVI an OpenDML one
244  * for compatibility reasons. */
245  avist->indexes.indx_start = ff_start_tag(pb, "JUNK");
246  avio_wl16(pb, 4); /* wLongsPerEntry */
247  avio_w8(pb, 0); /* bIndexSubType (0 == frame index) */
248  avio_w8(pb, 0); /* bIndexType (0 == AVI_INDEX_OF_INDEXES) */
249  avio_wl32(pb, 0); /* nEntriesInUse (will fill out later on) */
250  ffio_wfourcc(pb, avi_stream2fourcc(tag, stream_index, par->codec_type));
251  /* dwChunkId */
252  ffio_fill(pb, 0, 3 * 4 /* dwReserved[3] */
253  + 16LL * avi->master_index_max_size);
254  ff_end_tag(pb, avist->indexes.indx_start);
255 }
256 
258 {
259  AVIContext *avi = s->priv_data;
260  AVIOContext *pb = s->pb;
261  int bitrate, n, i, nb_frames, au_byterate, au_ssize, au_scale;
262  int64_t max_stream_duration = 0;
263  AVCodecParameters *video_par;
265  int64_t list1, list2, strh, strf;
266  AVDictionaryEntry *t = NULL;
267  int padding;
268 
269  if (s->nb_streams > AVI_MAX_STREAM_COUNT) {
270  av_log(s, AV_LOG_ERROR, "AVI does not support "
271  ">"AV_STRINGIFY(AVI_MAX_STREAM_COUNT)" streams\n");
272  return AVERROR(EINVAL);
273  }
274 
275  avi->empty_packet = av_packet_alloc();
276  if (!avi->empty_packet)
277  return AVERROR(ENOMEM);
278 
279  for (n = 0; n < s->nb_streams; n++) {
280  s->streams[n]->priv_data = av_mallocz(sizeof(AVIStream));
281  if (!s->streams[n]->priv_data)
282  return AVERROR(ENOMEM);
283  }
284 
285  /* header list */
286  avi->riff_id = 0;
287  list1 = avi_start_new_riff(s, pb, "AVI ", "hdrl");
288 
289  /* avi header */
290  ffio_wfourcc(pb, "avih");
291  avio_wl32(pb, 14 * 4);
292  bitrate = 0;
293 
294  video_par = NULL;
295  for (n = 0; n < s->nb_streams; n++) {
296  AVCodecParameters *par = s->streams[n]->codecpar;
297  AVStream *st = s->streams[n];
298  bitrate = FFMIN(bitrate + par->bit_rate, INT32_MAX);
299  if (st->duration > 0) {
300  int64_t stream_duration = av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
301  max_stream_duration = FFMAX(stream_duration, max_stream_duration);
302  }
303  if (par->codec_type == AVMEDIA_TYPE_VIDEO) {
304  video_par = par;
305  video_st = st;
306  }
307  }
308 
309  /* guess master index size based on bitrate and duration */
310  if (!avi->reserve_index_space) {
311  double duration_est, filesize_est;
312  if (s->duration > 0)
313  duration_est = (double)s->duration / AV_TIME_BASE;
314  else if (max_stream_duration > 0)
315  duration_est = (double)max_stream_duration / AV_TIME_BASE;
316  else
317  duration_est = 10 * 60 * 60; /* default to 10 hours */
318  filesize_est = duration_est * (bitrate / 8) * 1.10; /* add 10% safety margin for muxer+bitrate */
319  avi->master_index_max_size = FFMAX((int)ceil(filesize_est / AVI_MAX_RIFF_SIZE) + 1,
320  avi->master_index_max_size);
321  av_log(s, AV_LOG_DEBUG, "duration_est:%0.3f, filesize_est:%0.1fGiB, master_index_max_size:%d\n",
322  duration_est, filesize_est / (1024*1024*1024), avi->master_index_max_size);
323  }
324 
325  nb_frames = 0;
326 
327  // TODO: should be avg_frame_rate
328  if (video_st)
329  avio_wl32(pb, (uint32_t) (INT64_C(1000000) * video_st->time_base.num /
331  else
332  avio_wl32(pb, 0);
333  avio_wl32(pb, bitrate / 8); /* XXX: not quite exact */
334  avio_wl32(pb, 0); /* padding */
335  if (!(pb->seekable & AVIO_SEEKABLE_NORMAL))
336  avio_wl32(pb, AVIF_TRUSTCKTYPE | AVIF_ISINTERLEAVED); /* flags */
337  else
339  avi->frames_hdr_all = avio_tell(pb); /* remember this offset to fill later */
340  avio_wl32(pb, nb_frames); /* nb frames, filled later */
341  avio_wl32(pb, 0); /* initial frame */
342  avio_wl32(pb, s->nb_streams); /* nb streams */
343  avio_wl32(pb, 1024 * 1024); /* suggested buffer size */
344  if (video_par) {
345  avio_wl32(pb, video_par->width);
346  avio_wl32(pb, video_par->height);
347  } else {
348  avio_wl32(pb, 0);
349  avio_wl32(pb, 0);
350  }
351  ffio_fill(pb, 0, 4 * 4); /* reserved */
352 
353  /* stream list */
354  for (i = 0; i < n; i++) {
355  AVStream *st = s->streams[i];
356  AVCodecParameters *par = st->codecpar;
357  AVIStream *avist = st->priv_data;
358  list2 = ff_start_tag(pb, "LIST");
359  ffio_wfourcc(pb, "strl");
360 
361  /* stream generic header */
362  strh = ff_start_tag(pb, "strh");
363  switch (par->codec_type) {
365  // XSUB subtitles behave like video tracks, other subtitles
366  // are not (yet) supported.
367  if (par->codec_id != AV_CODEC_ID_XSUB) {
368  avpriv_report_missing_feature(s, "Subtitle streams other than DivX XSUB");
369  return AVERROR_PATCHWELCOME;
370  }
371  case AVMEDIA_TYPE_VIDEO:
372  ffio_wfourcc(pb, "vids");
373  break;
374  case AVMEDIA_TYPE_AUDIO:
375  ffio_wfourcc(pb, "auds");
376  break;
377 // case AVMEDIA_TYPE_TEXT:
378 // ffio_wfourcc(pb, "txts");
379 // break;
380  case AVMEDIA_TYPE_DATA:
381  ffio_wfourcc(pb, "dats");
382  break;
383  }
384  if (par->codec_type == AVMEDIA_TYPE_VIDEO ||
385  par->codec_id == AV_CODEC_ID_XSUB)
386  avio_wl32(pb, par->codec_tag);
387  else
388  avio_wl32(pb, 1);
389  avist->strh_flags_offset = avio_tell(pb);
390  avio_wl32(pb, 0); /* flags */
391  avio_wl16(pb, 0); /* priority */
392  avio_wl16(pb, 0); /* language */
393  avio_wl32(pb, 0); /* initial frame */
394 
395  ff_parse_specific_params(st, &au_byterate, &au_ssize, &au_scale);
396 
397  if ( par->codec_type == AVMEDIA_TYPE_VIDEO
398  && par->codec_id != AV_CODEC_ID_XSUB
399  && au_byterate > 1000LL*au_scale) {
400  au_byterate = 600;
401  au_scale = 1;
402  }
403  avpriv_set_pts_info(st, 64, au_scale, au_byterate);
404  if (par->codec_id == AV_CODEC_ID_XSUB)
405  au_scale = au_byterate = 0;
406 
407  avio_wl32(pb, au_scale); /* scale */
408  avio_wl32(pb, au_byterate); /* rate */
409 
410  avio_wl32(pb, 0); /* start */
411  /* remember this offset to fill later */
412  avist->frames_hdr_strm = avio_tell(pb);
413  if (!(pb->seekable & AVIO_SEEKABLE_NORMAL))
414  /* FIXME: this may be broken, but who cares */
416  else
417  avio_wl32(pb, 0); /* length, XXX: filled later */
418 
419  /* suggested buffer size, is set to largest chunk size in avi_write_trailer */
420  if (par->codec_type == AVMEDIA_TYPE_VIDEO)
421  avio_wl32(pb, 1024 * 1024);
422  else if (par->codec_type == AVMEDIA_TYPE_AUDIO)
423  avio_wl32(pb, 12 * 1024);
424  else
425  avio_wl32(pb, 0);
426  avio_wl32(pb, -1); /* quality */
427  avio_wl32(pb, au_ssize); /* sample size */
428  avio_wl32(pb, 0);
429  avio_wl16(pb, par->width);
430  avio_wl16(pb, par->height);
431  ff_end_tag(pb, strh);
432 
433  if (par->codec_type != AVMEDIA_TYPE_DATA) {
434  int ret, flags;
435  enum AVPixelFormat pix_fmt;
436 
437  strf = ff_start_tag(pb, "strf");
438  switch (par->codec_type) {
440  /* XSUB subtitles behave like video tracks, other subtitles
441  * are not (yet) supported. */
442  if (par->codec_id != AV_CODEC_ID_XSUB)
443  break;
444  case AVMEDIA_TYPE_VIDEO:
445  /* WMP expects RGB 5:5:5 rawvideo in avi to have bpp set to 16. */
446  if ( !par->codec_tag
447  && par->codec_id == AV_CODEC_ID_RAWVIDEO
448  && par->format == AV_PIX_FMT_RGB555LE
449  && par->bits_per_coded_sample == 15)
450  par->bits_per_coded_sample = 16;
451  avist->pal_offset = avio_tell(pb) + 40;
452  ff_put_bmp_header(pb, par, 0, 0, avi->flipped_raw_rgb);
454  par->bits_per_coded_sample);
455  if ( !par->codec_tag
456  && par->codec_id == AV_CODEC_ID_RAWVIDEO
457  && par->format != pix_fmt
458  && par->format != AV_PIX_FMT_NONE)
459  av_log(s, AV_LOG_ERROR, "%s rawvideo cannot be written to avi, output file will be unreadable\n",
461 
462  if (par->format == AV_PIX_FMT_PAL8) {
463  if (par->bits_per_coded_sample < 0 || par->bits_per_coded_sample > 8) {
464  av_log(s, AV_LOG_ERROR, "PAL8 with %d bps is not allowed\n", par->bits_per_coded_sample);
465  return AVERROR(EINVAL);
466  }
467  }
468 
469  break;
470  case AVMEDIA_TYPE_AUDIO:
472  if ((ret = ff_put_wav_header(s, pb, par, flags)) < 0)
473  return ret;
474  break;
475  default:
477  "Invalid or not supported codec type '%s' found in the input\n",
478  (char *)av_x_if_null(av_get_media_type_string(par->codec_type), "?"));
479  return AVERROR(EINVAL);
480  }
481  ff_end_tag(pb, strf);
482  if ((t = av_dict_get(st->metadata, "title", NULL, 0))) {
483  ff_riff_write_info_tag(s->pb, "strn", t->value);
484  t = NULL;
485  }
486  if (par->codec_id == AV_CODEC_ID_XSUB
487  && (t = av_dict_get(s->streams[i]->metadata, "language", NULL, 0))) {
488  const char* langstr = ff_convert_lang_to(t->value, AV_LANG_ISO639_1);
489  t = NULL;
490  if (langstr) {
491  char* str = av_asprintf("Subtitle - %s-xx;02", langstr);
492  if (!str)
493  return AVERROR(ENOMEM);
494  ff_riff_write_info_tag(s->pb, "strn", str);
495  av_free(str);
496  }
497  }
498  }
499 
500  if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
502  }
503 
504  if (par->codec_type == AVMEDIA_TYPE_VIDEO &&
505  st->sample_aspect_ratio.num > 0 &&
506  st->sample_aspect_ratio.den > 0) {
507  int vprp = ff_start_tag(pb, "vprp");
509  (AVRational) { par->width,
510  par->height });
511  int num, den, fields, i;
512  av_reduce(&num, &den, dar.num, dar.den, 0xFFFF);
513  if (par->field_order == AV_FIELD_TT || par->field_order == AV_FIELD_BB ||
514  par->field_order == AV_FIELD_TB || par->field_order == AV_FIELD_BT) {
515  fields = 2; // interlaced
516  } else {
517  fields = 1; // progressive
518  }
519 
520  avio_wl32(pb, 0); // video format = unknown
521  avio_wl32(pb, 0); // video standard = unknown
522  // TODO: should be avg_frame_rate
523  avio_wl32(pb, (2LL*st->time_base.den + st->time_base.num - 1) / (2LL * st->time_base.num));
524  avio_wl32(pb, par->width);
525  avio_wl32(pb, par->height);
526  avio_wl16(pb, den);
527  avio_wl16(pb, num);
528  avio_wl32(pb, par->width);
529  avio_wl32(pb, par->height);
530  avio_wl32(pb, fields); // fields per frame
531 
532  for (i = 0; i < fields; i++) {
533  int start_line;
534  // OpenDML v1.02 is not very specific on what value to use for
535  // start_line when frame data is not coming from a capturing device,
536  // so just use 0/1 depending on the field order for interlaced frames
537  if (par->field_order == AV_FIELD_TT || par->field_order == AV_FIELD_TB) {
538  start_line = (i == 0) ? 0 : 1;
539  } else if (par->field_order == AV_FIELD_BB || par->field_order == AV_FIELD_BT) {
540  start_line = (i == 0) ? 1 : 0;
541  } else {
542  start_line = 0;
543  }
544 
545  avio_wl32(pb, par->height / fields); // compressed bitmap height
546  avio_wl32(pb, par->width); // compressed bitmap width
547  avio_wl32(pb, par->height / fields); // valid bitmap height
548  avio_wl32(pb, par->width); // valid bitmap width
549  avio_wl32(pb, 0); // valid bitmap X offset
550  avio_wl32(pb, 0); // valid bitmap Y offset
551  avio_wl32(pb, 0); // valid X offset in T
552  avio_wl32(pb, start_line); // valid Y start line
553  }
554  ff_end_tag(pb, vprp);
555  }
556 
557  ff_end_tag(pb, list2);
558  }
559 
560  if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
561  /* AVI could become an OpenDML one, if it grows beyond 2Gb range */
562  avi->odml_list = ff_start_tag(pb, "JUNK");
563  ffio_wfourcc(pb, "odml");
564  ffio_wfourcc(pb, "dmlh");
565  avio_wl32(pb, 248);
566  ffio_fill(pb, 0, 248);
567  ff_end_tag(pb, avi->odml_list);
568  }
569 
570  ff_end_tag(pb, list1);
571 
573 
574 
575  padding = s->metadata_header_padding;
576  if (padding < 0)
577  padding = 1016;
578 
579  /* some padding for easier tag editing */
580  if (padding) {
581  list2 = ff_start_tag(pb, "JUNK");
582  ffio_fill(pb, 0, FFALIGN((uint32_t)padding, 4));
583  ff_end_tag(pb, list2);
584  }
585 
586  avi->movi_list = ff_start_tag(pb, "LIST");
587  ffio_wfourcc(pb, "movi");
588 
589  return 0;
590 }
591 
592 static void update_odml_entry(AVFormatContext *s, int stream_index, int64_t ix, int size)
593 {
594  AVIOContext *pb = s->pb;
595  AVIContext *avi = s->priv_data;
596  AVIStream *avist = s->streams[stream_index]->priv_data;
597  int64_t pos;
598  int au_byterate, au_ssize, au_scale;
599 
600  pos = avio_tell(pb);
601 
602  /* Updating one entry in the AVI OpenDML master index */
603  avio_seek(pb, avist->indexes.indx_start - 8, SEEK_SET);
604  ffio_wfourcc(pb, "indx"); /* enabling this entry */
605  avio_skip(pb, 8);
606  avio_wl32(pb, avi->riff_id - avist->indexes.master_odml_riff_id_base); /* nEntriesInUse */
607  avio_skip(pb, 16 * (avi->riff_id - avist->indexes.master_odml_riff_id_base));
608  avio_wl64(pb, ix); /* qwOffset */
609  avio_wl32(pb, size); /* dwSize */
610  ff_parse_specific_params(s->streams[stream_index], &au_byterate, &au_ssize, &au_scale);
611  if (s->streams[stream_index]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && au_ssize > 0) {
612  uint32_t audio_segm_size = (avist->audio_strm_length - avist->indexes.audio_strm_offset);
613  if ((audio_segm_size % au_ssize > 0) && !avist->sample_requested) {
614  avpriv_request_sample(s, "OpenDML index duration for audio packets with partial frames");
615  avist->sample_requested = 1;
616  }
617  avio_wl32(pb, audio_segm_size / au_ssize); /* dwDuration (sample count) */
618  } else
619  avio_wl32(pb, avist->indexes.entry); /* dwDuration (packet count) */
620 
621  avio_seek(pb, pos, SEEK_SET);
622 }
623 
625 {
626  AVIOContext *pb = s->pb;
627  AVIContext *avi = s->priv_data;
628  char tag[5];
629  char ix_tag[] = "ix00";
630  int i, j;
631 
633 
634  for (i = 0; i < s->nb_streams; i++) {
635  AVIStream *avist = s->streams[i]->priv_data;
637  int64_t pos;
639 
640  pos = avio_tell(pb);
643  av_assert1(avio_tell(pb) - pos == size);
644  avist->indexes.master_odml_riff_id_base = avi->riff_id - 1;
645  }
647  }
648 
649  for (i = 0; i < s->nb_streams; i++) {
650  AVIStream *avist = s->streams[i]->priv_data;
651  int64_t ix;
652 
653  avi_stream2fourcc(tag, i, s->streams[i]->codecpar->codec_type);
654  ix_tag[3] = '0' + i;
655 
656  /* Writing AVI OpenDML leaf index chunk */
657  ix = avio_tell(pb);
658  ffio_wfourcc(pb, ix_tag); /* ix?? */
659  avio_wl32(pb, avist->indexes.entry * 8 + 24);
660  /* chunk size */
661  avio_wl16(pb, 2); /* wLongsPerEntry */
662  avio_w8(pb, 0); /* bIndexSubType (0 == frame index) */
663  avio_w8(pb, 1); /* bIndexType (1 == AVI_INDEX_OF_CHUNKS) */
664  avio_wl32(pb, avist->indexes.entry);
665  /* nEntriesInUse */
666  ffio_wfourcc(pb, tag); /* dwChunkId */
667  avio_wl64(pb, avi->movi_list); /* qwBaseOffset */
668  avio_wl32(pb, 0); /* dwReserved_3 (must be 0) */
669 
670  for (j = 0; j < avist->indexes.entry; j++) {
671  AVIIentry *ie = avi_get_ientry(&avist->indexes, j);
672  avio_wl32(pb, ie->pos + 8);
673  avio_wl32(pb, ((uint32_t) ie->len & ~0x80000000) |
674  (ie->flags & 0x10 ? 0 : 0x80000000));
675  }
676 
677  update_odml_entry(s, i, ix, avio_tell(pb) - ix);
678  }
679  return 0;
680 }
681 
683 {
684  AVIOContext *pb = s->pb;
685  AVIContext *avi = s->priv_data;
686  int64_t idx_chunk;
687  int i;
688  char tag[5];
689 
690  if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
691  AVIStream *avist;
692  AVIIentry *ie = 0, *tie;
693  int empty, stream_id = -1;
694 
695  idx_chunk = ff_start_tag(pb, "idx1");
696  for (i = 0; i < s->nb_streams; i++) {
697  avist = s->streams[i]->priv_data;
698  avist->entry = 0;
699  }
700 
701  do {
702  empty = 1;
703  for (i = 0; i < s->nb_streams; i++) {
704  avist = s->streams[i]->priv_data;
705  if (avist->indexes.entry <= avist->entry)
706  continue;
707 
708  tie = avi_get_ientry(&avist->indexes, avist->entry);
709  if (empty || tie->pos < ie->pos) {
710  ie = tie;
711  stream_id = i;
712  }
713  empty = 0;
714  }
715  if (!empty) {
716  avist = s->streams[stream_id]->priv_data;
717  if (*ie->tag)
718  ffio_wfourcc(pb, ie->tag);
719  else {
720  avi_stream2fourcc(tag, stream_id,
721  s->streams[stream_id]->codecpar->codec_type);
722  ffio_wfourcc(pb, tag);
723  }
724  avio_wl32(pb, ie->flags);
725  avio_wl32(pb, ie->pos);
726  avio_wl32(pb, ie->len);
727  avist->entry++;
728  }
729  } while (!empty);
730  ff_end_tag(pb, idx_chunk);
731 
733  }
734  return 0;
735 }
736 
737 static int write_skip_frames(AVFormatContext *s, int stream_index, int64_t dts)
738 {
739  AVIContext *avi = s->priv_data;
740  AVIStream *avist = s->streams[stream_index]->priv_data;
741  AVCodecParameters *par = s->streams[stream_index]->codecpar;
742 
743  ff_dlog(s, "dts:%s packet_count:%d stream_index:%d\n", av_ts2str(dts), avist->packet_count, stream_index);
744  while (par->block_align == 0 && dts != AV_NOPTS_VALUE &&
745  dts > avist->packet_count && par->codec_id != AV_CODEC_ID_XSUB && avist->packet_count) {
746 
747  if (dts - avist->packet_count > 60000) {
748  av_log(s, AV_LOG_ERROR, "Too large number of skipped frames %"PRId64" > 60000\n", dts - avist->packet_count);
749  return AVERROR(EINVAL);
750  }
751 
752  avi->empty_packet->stream_index = stream_index;
754  ff_dlog(s, "dup dts:%s packet_count:%d\n", av_ts2str(dts), avist->packet_count);
755  }
756 
757  return 0;
758 }
759 
761 {
762  const int stream_index = pkt->stream_index;
763  AVCodecParameters *par = s->streams[stream_index]->codecpar;
764  int ret;
765 
766  if (par->codec_id == AV_CODEC_ID_H264 && par->codec_tag == MKTAG('H','2','6','4') && pkt->size) {
767  ret = ff_check_h264_startcode(s, s->streams[stream_index], pkt);
768  if (ret < 0)
769  return ret;
770  }
771 
772  if ((ret = write_skip_frames(s, stream_index, pkt->dts)) < 0)
773  return ret;
774 
775  if (!pkt->size)
776  return avi_write_packet_internal(s, pkt); /* Passthrough */
777 
778  if (par->codec_type == AVMEDIA_TYPE_VIDEO) {
779  AVIStream *avist = s->streams[stream_index]->priv_data;
780  AVIOContext *pb = s->pb;
781  AVPacket *opkt = pkt;
782  int reshuffle_ret;
783  if (par->codec_id == AV_CODEC_ID_RAWVIDEO && par->codec_tag == 0) {
784  int64_t bpc = par->bits_per_coded_sample != 15 ? par->bits_per_coded_sample : 16;
785  int expected_stride = ((par->width * bpc + 31) >> 5)*4;
786  reshuffle_ret = ff_reshuffle_raw_rgb(s, &pkt, par, expected_stride);
787  if (reshuffle_ret < 0)
788  return reshuffle_ret;
789  } else
790  reshuffle_ret = 0;
791  if (par->format == AV_PIX_FMT_PAL8) {
792  ret = ff_get_packet_palette(s, opkt, reshuffle_ret, avist->palette);
793  if (ret < 0)
794  goto fail;
795  if (ret) {
796  int pal_size = 1 << par->bits_per_coded_sample;
797  int pc_tag, i;
798 
800 
801  if ((pb->seekable & AVIO_SEEKABLE_NORMAL) && avist->pal_offset) {
802  int64_t cur_offset = avio_tell(pb);
803  avio_seek(pb, avist->pal_offset, SEEK_SET);
804  for (i = 0; i < pal_size; i++) {
805  uint32_t v = avist->palette[i];
806  avio_wl32(pb, v & 0xffffff);
807  }
808  avio_seek(pb, cur_offset, SEEK_SET);
809  memcpy(avist->old_palette, avist->palette, pal_size * 4);
810  avist->pal_offset = 0;
811  }
812  if (memcmp(avist->palette, avist->old_palette, pal_size * 4)) {
813  unsigned char tag[5];
814  avi_stream2fourcc(tag, stream_index, par->codec_type);
815  tag[2] = 'p'; tag[3] = 'c';
816  if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) {
817  if (avist->strh_flags_offset) {
818  int64_t cur_offset = avio_tell(pb);
819  avio_seek(pb, avist->strh_flags_offset, SEEK_SET);
821  avio_seek(pb, cur_offset, SEEK_SET);
822  avist->strh_flags_offset = 0;
823  }
824  ret = avi_add_ientry(s, stream_index, tag, AVIIF_NO_TIME,
825  pal_size * 4 + 4);
826  if (ret < 0)
827  goto fail;
828  }
829  pc_tag = ff_start_tag(pb, tag);
830  avio_w8(pb, 0);
831  avio_w8(pb, pal_size & 0xFF);
832  avio_wl16(pb, 0); // reserved
833  for (i = 0; i < pal_size; i++) {
834  uint32_t v = avist->palette[i];
835  avio_wb32(pb, v<<8);
836  }
837  ff_end_tag(pb, pc_tag);
838  memcpy(avist->old_palette, avist->palette, pal_size * 4);
839  }
840  }
841  }
842  if (reshuffle_ret) {
844 
845 fail:
846  if (reshuffle_ret)
848  return ret;
849  }
850  }
851 
853 }
854 
856 {
857  unsigned char tag[5];
858  unsigned int flags = 0;
859  const int stream_index = pkt->stream_index;
860  int size = pkt->size;
861  AVIContext *avi = s->priv_data;
862  AVIOContext *pb = s->pb;
863  AVIStream *avist = s->streams[stream_index]->priv_data;
864  AVCodecParameters *par = s->streams[stream_index]->codecpar;
865 
866  if (pkt->dts != AV_NOPTS_VALUE)
867  avist->last_dts = pkt->dts + pkt->duration;
868 
869  avist->packet_count++;
870 
871  // Make sure to put an OpenDML chunk when the file size exceeds the limits
872  if ((pb->seekable & AVIO_SEEKABLE_NORMAL) &&
873  (avio_tell(pb) - avi->riff_start > AVI_MAX_RIFF_SIZE)) {
874  avi_write_ix(s);
875  ff_end_tag(pb, avi->movi_list);
876 
877  if (avi->riff_id == 1)
878  avi_write_idx1(s);
879 
880  ff_end_tag(pb, avi->riff_start);
881  avi->movi_list = avi_start_new_riff(s, pb, "AVIX", "movi");
882  }
883 
884  avi_stream2fourcc(tag, stream_index, par->codec_type);
885  if (pkt->flags & AV_PKT_FLAG_KEY)
886  flags = 0x10;
887  if (par->codec_type == AVMEDIA_TYPE_AUDIO)
888  avist->audio_strm_length += size;
889 
890  if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) {
891  int ret;
892  ret = avi_add_ientry(s, stream_index, NULL, flags, size);
893  if (ret < 0)
894  return ret;
895  }
896 
897  avio_write(pb, tag, 4);
898  avio_wl32(pb, size);
899  avio_write(pb, pkt->data, size);
900  if (size & 1)
901  avio_w8(pb, 0);
902 
903  return 0;
904 }
905 
907 {
908  AVIContext *avi = s->priv_data;
909  AVIOContext *pb = s->pb;
910  int res = 0;
911  int i, n, nb_frames;
912  int64_t file_size;
913 
914  for (i = 0; i < s->nb_streams; i++) {
915  AVIStream *avist = s->streams[i]->priv_data;
916  write_skip_frames(s, i, avist->last_dts);
917  }
918 
919  if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
920  if (avi->riff_id == 1) {
921  ff_end_tag(pb, avi->movi_list);
922  res = avi_write_idx1(s);
923  ff_end_tag(pb, avi->riff_start);
924  } else {
925  avi_write_ix(s);
926  ff_end_tag(pb, avi->movi_list);
927  ff_end_tag(pb, avi->riff_start);
928 
929  file_size = avio_tell(pb);
930  avio_seek(pb, avi->odml_list - 8, SEEK_SET);
931  ffio_wfourcc(pb, "LIST"); /* Making this AVI OpenDML one */
932  avio_skip(pb, 16);
933 
934  for (n = nb_frames = 0; n < s->nb_streams; n++) {
935  AVCodecParameters *par = s->streams[n]->codecpar;
936  AVIStream *avist = s->streams[n]->priv_data;
937 
938  if (par->codec_type == AVMEDIA_TYPE_VIDEO) {
939  if (nb_frames < avist->packet_count)
940  nb_frames = avist->packet_count;
941  } else {
942  if (par->codec_id == AV_CODEC_ID_MP2 ||
943  par->codec_id == AV_CODEC_ID_MP3)
944  nb_frames += avist->packet_count;
945  }
946  }
947  avio_wl32(pb, nb_frames);
948  avio_seek(pb, file_size, SEEK_SET);
949 
951  }
952  }
953 
954  if (avi->riff_id >= avi->master_index_max_size) {
955  int index_space = AVI_MASTER_INDEX_PREFIX_SIZE +
957  av_log(s, AV_LOG_WARNING, "Output file not strictly OpenDML compliant, "
958  "consider re-muxing with 'reserve_index_space' option value >= %d\n",
959  index_space);
960  }
961 
962  for (i = 0; i < s->nb_streams; i++) {
963  AVIStream *avist = s->streams[i]->priv_data;
964  if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
965  avio_seek(pb, avist->frames_hdr_strm + 4, SEEK_SET);
966  avio_wl32(pb, avist->max_size);
967  }
968  }
969 
970  return res;
971 }
972 
974 {
975  AVIContext *avi = s->priv_data;
976 
978 
979  for (int i = 0; i < s->nb_streams; i++) {
980  AVIStream *avist = s->streams[i]->priv_data;
981  if (!avist)
982  continue;
983  for (int j = 0; j < avist->indexes.ents_allocated / AVI_INDEX_CLUSTER_SIZE; j++)
984  av_freep(&avist->indexes.cluster[j]);
985  av_freep(&avist->indexes.cluster);
986  avist->indexes.ents_allocated = avist->indexes.entry = 0;
987  }
988 }
989 
990 #define OFFSET(x) offsetof(AVIContext, x)
991 #define ENC AV_OPT_FLAG_ENCODING_PARAM
992 static const AVOption options[] = {
993  { "reserve_index_space", "reserve space (in bytes) at the beginning of the file for each stream index", OFFSET(reserve_index_space), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, ENC },
994  { "write_channel_mask", "write channel mask into wave format header", OFFSET(write_channel_mask), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, ENC },
995  { "flipped_raw_rgb", "Raw RGB bitmaps are stored bottom-up", OFFSET(flipped_raw_rgb), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, ENC },
996  { NULL },
997 };
998 
999 static const AVClass avi_muxer_class = {
1000  .class_name = "AVI muxer",
1001  .item_name = av_default_item_name,
1002  .option = options,
1003  .version = LIBAVUTIL_VERSION_INT,
1004 };
1005 
1007  .name = "avi",
1008  .long_name = NULL_IF_CONFIG_SMALL("AVI (Audio Video Interleaved)"),
1009  .mime_type = "video/x-msvideo",
1010  .extensions = "avi",
1011  .priv_data_size = sizeof(AVIContext),
1012  .audio_codec = CONFIG_LIBMP3LAME ? AV_CODEC_ID_MP3 : AV_CODEC_ID_AC3,
1013  .video_codec = AV_CODEC_ID_MPEG4,
1014  .init = avi_init,
1015  .deinit = avi_deinit,
1019  .codec_tag = ff_riff_codec_tags_list,
1020  .priv_class = &avi_muxer_class,
1021 };
AVIContext::flipped_raw_rgb
int flipped_raw_rgb
Definition: avienc.c:76
AVIStream::strh_flags_offset
int64_t strh_flags_offset
Definition: avienc.c:91
options
static const AVOption options[]
Definition: avienc.c:992
AV_LANG_ISO639_1
@ AV_LANG_ISO639_1
3-char terminological language codes as per ISO-IEC 639-2
Definition: avlanguage.h:30
avi_stream2fourcc
static char * avi_stream2fourcc(char *tag, int index, enum AVMediaType type)
Definition: avienc.c:180
AVMEDIA_TYPE_SUBTITLE
@ AVMEDIA_TYPE_SUBTITLE
Definition: avutil.h:204
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:186
AVIIentry::len
unsigned int len
Definition: avienc.c:50
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
AV_CODEC_ID_AC3
@ AV_CODEC_ID_AC3
Definition: codec_id.h:425
init
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:31
AVOutputFormat::name
const char * name
Definition: avformat.h:496
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
AVCodecParameters::codec_type
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:56
mpegts.h
ffio_wfourcc
static av_always_inline void ffio_wfourcc(AVIOContext *pb, const uint8_t *s)
Definition: avio_internal.h:105
AVCodecParameters
This struct describes the properties of an encoded stream.
Definition: codec_par.h:52
avi_start_new_riff
static int64_t avi_start_new_riff(AVFormatContext *s, AVIOContext *pb, const char *riff_tag, const char *list_tag)
Definition: avienc.c:159
AVI_MASTER_INDEX_SIZE_DEFAULT
#define AVI_MASTER_INDEX_SIZE_DEFAULT
Definition: avienc.c:56
AVStream::priv_data
void * priv_data
Definition: avformat.h:854
ff_put_bmp_header
void ff_put_bmp_header(AVIOContext *pb, AVCodecParameters *par, int for_asf, int ignore_extradata, int rgb_frame_is_flipped)
Definition: riffenc.c:216
AV_TIME_BASE_Q
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
Definition: avutil.h:260
av_asprintf
char * av_asprintf(const char *fmt,...)
Definition: avstring.c:113
AVIStream
Definition: avidec.c:41
avlanguage.h
avi_get_ientry
static AVIIentry * avi_get_ientry(const AVIIndex *idx, int ent_id)
Definition: avienc.c:100
AV_CODEC_ID_RAWVIDEO
@ AV_CODEC_ID_RAWVIDEO
Definition: codec_id.h:63
AV_CODEC_ID_MPEG4
@ AV_CODEC_ID_MPEG4
Definition: codec_id.h:62
pixdesc.h
deinit
static void deinit(AVFormatContext *s)
Definition: chromaprint.c:50
index
fg index
Definition: ffmpeg_filter.c:168
AVPacket::data
uint8_t * data
Definition: packet.h:373
AVOption
AVOption.
Definition: opt.h:247
avio_wl64
void avio_wl64(AVIOContext *s, uint64_t val)
Definition: aviobuf.c:439
AVPacket::duration
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: packet.h:391
AVCodecParameters::codec_tag
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: codec_par.h:64
FFMAX
#define FFMAX(a, b)
Definition: macros.h:47
avi_write_counters
static int avi_write_counters(AVFormatContext *s, int riff_id)
Definition: avienc.c:199
AV_PKT_FLAG_KEY
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: packet.h:425
av_packet_free
void av_packet_free(AVPacket **pkt)
Free the packet, if the packet is reference counted, it will be unreferenced first.
Definition: avpacket.c:75
AVIIndex::audio_strm_offset
int64_t audio_strm_offset
Definition: avienc.c:60
av_malloc
#define av_malloc(s)
Definition: tableprint_vlc.h:31
AVIStream::palette
uint32_t palette[AVPALETTE_COUNT]
Definition: avienc.c:93
avio_wl16
void avio_wl16(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:451
avi_muxer_class
static const AVClass avi_muxer_class
Definition: avienc.c:999
AV_FIELD_TT
@ AV_FIELD_TT
Definition: codec_par.h:39
AVIIndex::indx_start
int64_t indx_start
Definition: avienc.c:59
fail
#define fail()
Definition: checkasm.h:127
AVIContext::frames_hdr_all
int64_t frames_hdr_all
Definition: avienc.c:71
avio_tell
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:486
AVIStream::entry
int entry
Definition: avienc.c:83
type
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf type
Definition: writing_filters.txt:86
avi_add_ientry
static int avi_add_ientry(AVFormatContext *s, int stream_index, char *tag, unsigned int flags, unsigned int size)
Definition: avienc.c:107
AV_CODEC_ID_MP3
@ AV_CODEC_ID_MP3
preferred ID for decoding MPEG audio layer 1, 2 or 3
Definition: codec_id.h:423
AVStream::duration
int64_t duration
Decoding: duration of the stream, in stream time base.
Definition: avformat.h:888
AV_FIELD_TB
@ AV_FIELD_TB
Definition: codec_par.h:41
avi_write_trailer
static int avi_write_trailer(AVFormatContext *s)
Definition: avienc.c:906
av_reduce
int av_reduce(int *dst_num, int *dst_den, int64_t num, int64_t den, int64_t max)
Reduce a fraction.
Definition: rational.c:35
AVRational::num
int num
Numerator.
Definition: rational.h:59
raw.h
ff_start_tag
int64_t ff_start_tag(AVIOContext *pb, const char *tag)
Definition: riffenc.c:32
avassert.h
ceil
static __device__ float ceil(float a)
Definition: cuda_runtime.h:176
AVIStream::last_dts
int64_t last_dts
Definition: avienc.c:87
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_cold
#define av_cold
Definition: attributes.h:90
AVIStream::old_palette
uint32_t old_palette[AVPALETTE_COUNT]
Definition: avienc.c:94
av_dict_get
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
AVIContext::odml_list
int64_t odml_list
Definition: avienc.c:70
AVIContext
Definition: avidec.c:68
avi_write_header
static int avi_write_header(AVFormatContext *s)
Definition: avienc.c:257
s
#define s(width, name)
Definition: cbs_vp9.c:257
avi_write_packet
static int avi_write_packet(AVFormatContext *s, AVPacket *pkt)
Definition: avienc.c:760
AVIContext::movi_list
int64_t movi_list
Definition: avidec.c:74
AVMEDIA_TYPE_AUDIO
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
AVCodecParameters::width
int width
Video only.
Definition: codec_par.h:126
AV_CODEC_ID_MP2
@ AV_CODEC_ID_MP2
Definition: codec_id.h:422
avi_init
static av_cold int avi_init(struct AVFormatContext *s)
Definition: avienc.c:144
AVI_MASTER_INDEX_PREFIX_SIZE
#define AVI_MASTER_INDEX_PREFIX_SIZE
Definition: avienc.c:54
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:201
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
pix_fmt
static enum AVPixelFormat pix_fmt
Definition: demuxing_decoding.c:41
AVMEDIA_TYPE_DATA
@ AVMEDIA_TYPE_DATA
Opaque data information usually continuous.
Definition: avutil.h:203
AVIIF_NO_TIME
#define AVIIF_NO_TIME
Definition: avi.h:39
AV_FIELD_BT
@ AV_FIELD_BT
Definition: codec_par.h:42
AV_CODEC_ID_H264
@ AV_CODEC_ID_H264
Definition: codec_id.h:77
avi_write_idx1
static int avi_write_idx1(AVFormatContext *s)
Definition: avienc.c:682
avpriv_find_pix_fmt
enum AVPixelFormat avpriv_find_pix_fmt(const PixelFormatTag *tags, unsigned int fourcc)
Definition: utils.c:438
fields
the definition of that something depends on the semantic of the filter The callback must examine the status of the filter s links and proceed accordingly The status of output links is stored in the status_in and status_out fields and tested by the then the processing requires a frame on this link and the filter is expected to make efforts in that direction The status of input links is stored by the fifo and status_out fields
Definition: filter_design.txt:155
if
if(ret)
Definition: filter_design.txt:179
AVIContext::write_channel_mask
int write_channel_mask
Definition: avienc.c:75
AVFormatContext
Format I/O context.
Definition: avformat.h:1097
av_realloc_f
#define av_realloc_f(p, o, n)
Definition: tableprint_vlc.h:33
internal.h
AVStream::codecpar
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:992
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
AVISF_VIDEO_PALCHANGES
#define AVISF_VIDEO_PALCHANGES
Definition: avi.h:35
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:66
AVStream::time_base
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented.
Definition: avformat.h:868
NULL
#define NULL
Definition: coverity.c:32
ff_put_wav_header
int ff_put_wav_header(AVFormatContext *s, AVIOContext *pb, AVCodecParameters *par, int flags)
Write WAVEFORMAT header structure.
Definition: riffenc.c:55
AVERROR_PATCHWELCOME
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:64
update_odml_entry
static void update_odml_entry(AVFormatContext *s, int stream_index, int64_t ix, int size)
Definition: avienc.c:592
write_trailer
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:98
AVI_MAX_RIFF_SIZE
#define AVI_MAX_RIFF_SIZE
Definition: avi.h:31
AVRational
Rational number (pair of numerator and denominator).
Definition: rational.h:58
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
avi_deinit
static void avi_deinit(AVFormatContext *s)
Definition: avienc.c:973
AVI_MAX_STREAM_COUNT
#define AVI_MAX_STREAM_COUNT
Definition: avi.h:32
AVStream::metadata
AVDictionary * metadata
Definition: avformat.h:903
AVIStream::packet_count
int packet_count
Definition: avienc.c:82
AVIStream::pal_offset
int64_t pal_offset
Definition: avienc.c:95
ff_reshuffle_raw_rgb
int ff_reshuffle_raw_rgb(AVFormatContext *s, AVPacket **ppkt, AVCodecParameters *par, int expected_stride)
Reshuffles the lines to use the user specified stride.
Definition: rawutils.c:25
avio_w8
void avio_w8(AVIOContext *s, int b)
Definition: aviobuf.c:196
ffio_fill
void ffio_fill(AVIOContext *s, int b, int64_t count)
Definition: aviobuf.c:204
AVPALETTE_COUNT
#define AVPALETTE_COUNT
Definition: pixfmt.h:33
OFFSET
#define OFFSET(x)
Definition: avienc.c:990
avi.h
ff_dlog
#define ff_dlog(a,...)
Definition: tableprint_vlc.h:29
AVIOContext
Bytestream IO Context.
Definition: avio.h:161
AVMediaType
AVMediaType
Definition: avutil.h:199
AVPacket::size
int size
Definition: packet.h:374
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
id
enum AVCodecID id
Definition: extract_extradata_bsf.c:325
ff_riff_write_info_tag
void ff_riff_write_info_tag(AVIOContext *pb, const char *tag, const char *str)
Write a single RIFF info tag.
Definition: riffenc.c:303
AVIOContext::seekable
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Definition: avio.h:262
ff_convert_lang_to
const char * ff_convert_lang_to(const char *lang, enum AVLangCodespace target_codespace)
Convert a language code to a target codespace.
Definition: avlanguage.c:736
AVIIndex::cluster
AVIIentry ** cluster
Definition: avienc.c:64
size
int size
Definition: twinvq_data.h:10344
video_st
AVStream * video_st
Definition: movenc.c:60
AV_NOPTS_VALUE
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
avpriv_report_missing_feature
void avpriv_report_missing_feature(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
FF_PUT_WAV_HEADER_SKIP_CHANNELMASK
#define FF_PUT_WAV_HEADER_SKIP_CHANNELMASK
Tell ff_put_wav_header() to write an empty channel mask.
Definition: riff.h:58
ff_avi_muxer
const AVOutputFormat ff_avi_muxer
Definition: avienc.c:1006
AVStream::sample_aspect_ratio
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
Definition: avformat.h:901
AVPacket::dts
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed.
Definition: packet.h:372
avio_write
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
Definition: aviobuf.c:218
avio_wb32
void avio_wb32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:379
avio_wl32
void avio_wl32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:371
ENC
#define ENC
Definition: avienc.c:991
AVIIentry::pos
unsigned int pos
Definition: avienc.c:49
AVPacket::flags
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:379
av_packet_alloc
AVPacket * av_packet_alloc(void)
Allocate an AVPacket and set its fields to default values.
Definition: avpacket.c:64
bitrate
int64_t bitrate
Definition: h264_levels.c:131
ff_end_tag
void ff_end_tag(AVIOContext *pb, int64_t start)
Definition: riffenc.c:39
write_packet
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
Definition: ffmpeg.c:731
AV_FIELD_BB
@ AV_FIELD_BB
Definition: codec_par.h:40
avi_write_packet_internal
static int avi_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
Definition: avienc.c:855
AV_PIX_FMT_RGB555LE
@ AV_PIX_FMT_RGB555LE
packed RGB 5:5:5, 16bpp, (msb)1X 5R 5G 5B(lsb), little-endian, X=unused/undefined
Definition: pixfmt.h:108
AVOutputFormat
Definition: avformat.h:495
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:271
AVIStream::max_size
int max_size
Definition: avienc.c:84
avio_internal.h
AVI_MASTER_INDEX_ENTRY_SIZE
#define AVI_MASTER_INDEX_ENTRY_SIZE
Definition: avienc.c:55
internal.h
AVIF_TRUSTCKTYPE
#define AVIF_TRUSTCKTYPE
Definition: avi.h:27
AVCodecParameters::height
int height
Definition: codec_par.h:127
AV_TIME_BASE
#define AV_TIME_BASE
Internal time base represented as integer.
Definition: avutil.h:254
AVCodecParameters::block_align
int block_align
Audio only.
Definition: codec_par.h:177
av_assert1
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
FFMIN
#define FFMIN(a, b)
Definition: macros.h:49
AV_STRINGIFY
#define AV_STRINGIFY(s)
Definition: macros.h:66
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:263
AVI_INDEX_CLUSTER_SIZE
#define AVI_INDEX_CLUSTER_SIZE
Definition: avienc.c:53
AVCodecParameters::field_order
enum AVFieldOrder field_order
Video only.
Definition: codec_par.h:141
ff_check_h264_startcode
int ff_check_h264_startcode(AVFormatContext *s, const AVStream *st, const AVPacket *pkt)
Check presence of H264 startcode.
Definition: mpegtsenc.c:1740
AV_CODEC_ID_XSUB
@ AV_CODEC_ID_XSUB
Definition: codec_id.h:524
AV_PIX_FMT_PAL8
@ AV_PIX_FMT_PAL8
8 bits with AV_PIX_FMT_RGB32 palette
Definition: pixfmt.h:77
tag
uint32_t tag
Definition: movenc.c:1595
ret
ret
Definition: filter_design.txt:187
ff_get_packet_palette
int ff_get_packet_palette(AVFormatContext *s, AVPacket *pkt, int ret, uint32_t *palette)
Retrieves the palette from a packet, either from side data, or appended to the video data in the pack...
Definition: utils.c:1836
AVStream
Stream structure.
Definition: avformat.h:845
avio_seek
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:246
AVClass::class_name
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:71
AVIContext::riff_id
int riff_id
Definition: avienc.c:72
ff_parse_specific_params
void ff_parse_specific_params(AVStream *st, int *au_rate, int *au_ssize, int *au_scale)
Definition: riffenc.c:273
pos
unsigned int pos
Definition: spdifenc.c:412
avformat.h
AVIStream::sample_requested
int sample_requested
Definition: avienc.c:85
dict.h
write_odml_master
static void write_odml_master(AVFormatContext *s, int stream_index)
Definition: avienc.c:232
AVIContext::reserve_index_space
int reserve_index_space
Definition: avienc.c:73
AVIIndex::master_odml_riff_id_base
int master_odml_riff_id_base
Definition: avienc.c:63
av_get_media_type_string
const char * av_get_media_type_string(enum AVMediaType media_type)
Return a string describing the media_type enum, NULL if media_type is unknown.
Definition: utils.c:76
AVIO_SEEKABLE_NORMAL
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
Definition: avio.h:40
AVRational::den
int den
Denominator.
Definition: rational.h:60
AV_PIX_FMT_NONE
@ AV_PIX_FMT_NONE
Definition: pixfmt.h:65
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:224
avpriv_pix_fmt_bps_avi
const PixelFormatTag avpriv_pix_fmt_bps_avi[]
Definition: raw.c:316
ff_riff_write_info
void ff_riff_write_info(AVFormatContext *s)
Write all recognized RIFF tags from s->metadata.
Definition: riffenc.c:335
AVIIentry
Definition: avienc.c:46
avpriv_set_pts_info
void avpriv_set_pts_info(AVStream *st, 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:1146
av_mul_q
AVRational av_mul_q(AVRational b, AVRational c)
Multiply two rationals.
Definition: rational.c:80
AVPacket::stream_index
int stream_index
Definition: packet.h:375
avio_skip
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
Definition: aviobuf.c:333
AVIF_HASINDEX
#define AVIF_HASINDEX
Definition: avi.h:24
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
avutil.h
AVCodecParameters::bits_per_coded_sample
int bits_per_coded_sample
The number of bits per sample in the codedwords.
Definition: codec_par.h:102
avpriv_request_sample
#define avpriv_request_sample(...)
Definition: tableprint_vlc.h:37
AVCodecParameters::format
int format
Definition: codec_par.h:84
av_free
#define av_free(p)
Definition: tableprint_vlc.h:34
AVDictionaryEntry
Definition: dict.h:79
FFALIGN
#define FFALIGN(x, a)
Definition: macros.h:78
AVCodecParameters::codec_id
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:60
AVPacket
This structure stores compressed data.
Definition: packet.h:350
AVIF_ISINTERLEAVED
#define AVIF_ISINTERLEAVED
Definition: avi.h:26
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:241
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
riff.h
AVIStream::frames_hdr_strm
int64_t frames_hdr_strm
Definition: avienc.c:80
convert_header.str
string str
Definition: convert_header.py:20
timestamp.h
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
AVCodecParameters::bit_rate
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
Definition: codec_par.h:89
AVIIndex::entry
int entry
Definition: avienc.c:61
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
AVIIndex
Definition: avienc.c:58
av_ts2str
#define av_ts2str(ts)
Convenience macro, the return value should be used only directly in function arguments but never stan...
Definition: timestamp.h:54
AVIStream::indexes
AVIIndex indexes
Definition: avienc.c:89
MKTAG
#define MKTAG(a, b, c, d)
Definition: macros.h:55
AVDictionaryEntry::value
char * value
Definition: dict.h:81
avstring.h
AVIContext::empty_packet
AVPacket * empty_packet
Definition: avienc.c:69
write_header
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:347
AVIStream::audio_strm_length
int64_t audio_strm_length
Definition: avienc.c:81
AVIIentry::tag
char tag[4]
Definition: avienc.c:47
ff_riff_codec_tags_list
const AVCodecTag *const ff_riff_codec_tags_list[]
AVIContext::riff_start
int64_t riff_start
Definition: avienc.c:70
write_skip_frames
static int write_skip_frames(AVFormatContext *s, int stream_index, int64_t dts)
Definition: avienc.c:737
AVIIentry::flags
unsigned int flags
Definition: avienc.c:48
av_x_if_null
static void * av_x_if_null(const void *p, const void *x)
Return x default pointer in case p is NULL.
Definition: avutil.h:308
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:2484
AVIContext::master_index_max_size
int master_index_max_size
Definition: avienc.c:74
AVIIndex::ents_allocated
int ents_allocated
Definition: avienc.c:62
avi_write_ix
static int avi_write_ix(AVFormatContext *s)
Definition: avienc.c:624