FFmpeg
avienc.c
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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;
60  int64_t audio_strm_offset;
61  int entry;
62  int ents_allocated;
63  int master_odml_riff_id_base;
64  AVIIentry** cluster;
65 } AVIIndex;
66 
67 typedef struct AVIContext {
68  const AVClass *class;
69  int64_t riff_start, movi_list, odml_list;
70  int64_t frames_hdr_all;
71  int riff_id;
72  int reserve_index_space;
73  int master_index_max_size;
74  int write_channel_mask;
75  int flipped_raw_rgb;
76 } AVIContext;
77 
78 typedef struct AVIStream {
79  int64_t frames_hdr_strm;
80  int64_t audio_strm_length;
81  int packet_count;
82  int entry;
83  int max_size;
84  int sample_requested;
85 
86  int64_t last_dts;
87 
88  AVIIndex indexes;
89 
90  int64_t strh_flags_offset;
91 
92  uint32_t palette[AVPALETTE_COUNT];
93  uint32_t old_palette[AVPALETTE_COUNT];
94  int64_t pal_offset;
95 } AVIStream;
96 
97 static int avi_write_packet_internal(AVFormatContext *s, AVPacket *pkt);
98 
99 static inline AVIIentry *avi_get_ientry(const AVIIndex *idx, int ent_id)
100 {
101  int cl = ent_id / AVI_INDEX_CLUSTER_SIZE;
102  int id = ent_id % AVI_INDEX_CLUSTER_SIZE;
103  return &idx->cluster[cl][id];
104 }
105 
106 static int avi_add_ientry(AVFormatContext *s, int stream_index, char *tag,
107  unsigned int flags, unsigned int size)
108 {
109  AVIContext *avi = s->priv_data;
110  AVIOContext *pb = s->pb;
111  AVIStream *avist = s->streams[stream_index]->priv_data;
112  AVIIndex *idx = &avist->indexes;
113  int cl = idx->entry / AVI_INDEX_CLUSTER_SIZE;
114  int id = idx->entry % AVI_INDEX_CLUSTER_SIZE;
115 
116  if (idx->ents_allocated <= idx->entry) {
117  idx->cluster = av_realloc_f(idx->cluster, sizeof(void*), cl+1);
118  if (!idx->cluster) {
119  idx->ents_allocated = 0;
120  idx->entry = 0;
121  return AVERROR(ENOMEM);
122  }
123  idx->cluster[cl] =
124  av_malloc(AVI_INDEX_CLUSTER_SIZE * sizeof(AVIIentry));
125  if (!idx->cluster[cl])
126  return AVERROR(ENOMEM);
127  idx->ents_allocated += AVI_INDEX_CLUSTER_SIZE;
128  }
129 
130  if (tag)
131  memcpy(idx->cluster[cl][id].tag, tag, 4);
132  else
133  memset(idx->cluster[cl][id].tag, 0, 4);
134  idx->cluster[cl][id].flags = flags;
135  idx->cluster[cl][id].pos = avio_tell(pb) - avi->movi_list;
136  idx->cluster[cl][id].len = size;
137  avist->max_size = FFMAX(avist->max_size, size);
138  idx->entry++;
139 
140  return 0;
141 }
142 
143 static av_cold int avi_init(struct AVFormatContext *s)
144 {
145  AVIContext *avi = s->priv_data;
146 
147  if (avi->reserve_index_space > 0) {
148  avi->master_index_max_size = (avi->reserve_index_space - AVI_MASTER_INDEX_PREFIX_SIZE) / AVI_MASTER_INDEX_ENTRY_SIZE;
149  avi->master_index_max_size = FFMAX(avi->master_index_max_size, 16);
150  } else
151  avi->master_index_max_size = AVI_MASTER_INDEX_SIZE_DEFAULT;
152  av_log(s, AV_LOG_DEBUG, "reserve_index_space:%d master_index_max_size:%d\n",
153  avi->reserve_index_space, avi->master_index_max_size);
154 
155  return 1; /* stream initialization continues in avi_write_header */
156 }
157 
158 static int64_t avi_start_new_riff(AVFormatContext *s, AVIOContext *pb,
159  const char *riff_tag, const char *list_tag)
160 {
161  AVIContext *avi = s->priv_data;
162  int64_t loff;
163  int i;
164 
165  avi->riff_id++;
166  for (i = 0; i < s->nb_streams; i++) {
167  AVIStream *avist = s->streams[i]->priv_data;
168  avist->indexes.audio_strm_offset = avist->audio_strm_length;
169  avist->indexes.entry = 0;
170  }
171 
172  avi->riff_start = ff_start_tag(pb, "RIFF");
173  ffio_wfourcc(pb, riff_tag);
174  loff = ff_start_tag(pb, "LIST");
175  ffio_wfourcc(pb, list_tag);
176  return loff;
177 }
178 
179 static char *avi_stream2fourcc(char *tag, int index, enum AVMediaType type)
180 {
181  tag[0] = '0' + index / 10;
182  tag[1] = '0' + index % 10;
183  if (type == AVMEDIA_TYPE_VIDEO) {
184  tag[2] = 'd';
185  tag[3] = 'c';
186  } else if (type == AVMEDIA_TYPE_SUBTITLE) {
187  // note: this is not an official code
188  tag[2] = 's';
189  tag[3] = 'b';
190  } else {
191  tag[2] = 'w';
192  tag[3] = 'b';
193  }
194  tag[4] = '\0';
195  return tag;
196 }
197 
198 static int avi_write_counters(AVFormatContext *s, int riff_id)
199 {
200  AVIOContext *pb = s->pb;
201  AVIContext *avi = s->priv_data;
202  int n, au_byterate, au_ssize, au_scale, nb_frames = 0;
203  int64_t file_size;
204  AVCodecParameters *par;
205 
206  file_size = avio_tell(pb);
207  for (n = 0; n < s->nb_streams; n++) {
208  AVIStream *avist = s->streams[n]->priv_data;
209 
210  av_assert0(avist->frames_hdr_strm);
211  par = s->streams[n]->codecpar;
212  avio_seek(pb, avist->frames_hdr_strm, SEEK_SET);
213  ff_parse_specific_params(s->streams[n], &au_byterate, &au_ssize, &au_scale);
214  if (au_ssize == 0)
215  avio_wl32(pb, avist->packet_count);
216  else
217  avio_wl32(pb, avist->audio_strm_length / au_ssize);
218  if (par->codec_type == AVMEDIA_TYPE_VIDEO)
219  nb_frames = FFMAX(nb_frames, avist->packet_count);
220  }
221  if (riff_id == 1) {
222  av_assert0(avi->frames_hdr_all);
223  avio_seek(pb, avi->frames_hdr_all, SEEK_SET);
224  avio_wl32(pb, nb_frames);
225  }
226  avio_seek(pb, file_size, SEEK_SET);
227 
228  return 0;
229 }
230 
231 static void write_odml_master(AVFormatContext *s, int stream_index)
232 {
233  AVIOContext *pb = s->pb;
234  AVIContext *avi = s->priv_data;
235  AVStream *st = s->streams[stream_index];
236  AVCodecParameters *par = st->codecpar;
237  AVIStream *avist = st->priv_data;
238  unsigned char tag[5];
239  int j;
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  avio_wl64(pb, 0); /* dwReserved[3] */
253  avio_wl32(pb, 0); /* Must be 0. */
254  for (j = 0; j < avi->master_index_max_size * 2; j++)
255  avio_wl64(pb, 0);
256  ff_end_tag(pb, avist->indexes.indx_start);
257 }
258 
259 static int avi_write_header(AVFormatContext *s)
260 {
261  AVIContext *avi = s->priv_data;
262  AVIOContext *pb = s->pb;
263  int bitrate, n, i, nb_frames, au_byterate, au_ssize, au_scale;
264  int64_t max_stream_duration = 0;
265  AVCodecParameters *video_par;
266  AVStream *video_st = NULL;
267  int64_t list1, list2, strh, strf;
268  AVDictionaryEntry *t = NULL;
269  int padding;
270 
271  if (s->nb_streams > AVI_MAX_STREAM_COUNT) {
272  av_log(s, AV_LOG_ERROR, "AVI does not support "
273  ">"AV_STRINGIFY(AVI_MAX_STREAM_COUNT)" streams\n");
274  return AVERROR(EINVAL);
275  }
276 
277  for (n = 0; n < s->nb_streams; n++) {
278  s->streams[n]->priv_data = av_mallocz(sizeof(AVIStream));
279  if (!s->streams[n]->priv_data)
280  return AVERROR(ENOMEM);
281  }
282 
283  /* header list */
284  avi->riff_id = 0;
285  list1 = avi_start_new_riff(s, pb, "AVI ", "hdrl");
286 
287  /* avi header */
288  ffio_wfourcc(pb, "avih");
289  avio_wl32(pb, 14 * 4);
290  bitrate = 0;
291 
292  video_par = NULL;
293  for (n = 0; n < s->nb_streams; n++) {
294  AVCodecParameters *par = s->streams[n]->codecpar;
295  AVStream *st = s->streams[n];
296  bitrate = FFMIN(bitrate + par->bit_rate, INT32_MAX);
297  if (st->duration > 0) {
298  int64_t stream_duration = av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
299  max_stream_duration = FFMAX(stream_duration, max_stream_duration);
300  }
301  if (par->codec_type == AVMEDIA_TYPE_VIDEO) {
302  video_par = par;
303  video_st = st;
304  }
305  }
306 
307  /* guess master index size based on bitrate and duration */
308  if (!avi->reserve_index_space) {
309  double duration_est, filesize_est;
310  if (s->duration > 0)
311  duration_est = (double)s->duration / AV_TIME_BASE;
312  else if (max_stream_duration > 0)
313  duration_est = (double)max_stream_duration / AV_TIME_BASE;
314  else
315  duration_est = 10 * 60 * 60; /* default to 10 hours */
316  filesize_est = duration_est * (bitrate / 8) * 1.10; /* add 10% safety margin for muxer+bitrate */
317  avi->master_index_max_size = FFMAX((int)ceil(filesize_est / AVI_MAX_RIFF_SIZE) + 1,
318  avi->master_index_max_size);
319  av_log(s, AV_LOG_DEBUG, "duration_est:%0.3f, filesize_est:%0.1fGiB, master_index_max_size:%d\n",
320  duration_est, filesize_est / (1024*1024*1024), avi->master_index_max_size);
321  }
322 
323  nb_frames = 0;
324 
325  // TODO: should be avg_frame_rate
326  if (video_st)
327  avio_wl32(pb, (uint32_t) (INT64_C(1000000) * video_st->time_base.num /
328  video_st->time_base.den));
329  else
330  avio_wl32(pb, 0);
331  avio_wl32(pb, bitrate / 8); /* XXX: not quite exact */
332  avio_wl32(pb, 0); /* padding */
333  if (!(pb->seekable & AVIO_SEEKABLE_NORMAL))
334  avio_wl32(pb, AVIF_TRUSTCKTYPE | AVIF_ISINTERLEAVED); /* flags */
335  else
336  avio_wl32(pb, AVIF_TRUSTCKTYPE | AVIF_HASINDEX | AVIF_ISINTERLEAVED); /* flags */
337  avi->frames_hdr_all = avio_tell(pb); /* remember this offset to fill later */
338  avio_wl32(pb, nb_frames); /* nb frames, filled later */
339  avio_wl32(pb, 0); /* initial frame */
340  avio_wl32(pb, s->nb_streams); /* nb streams */
341  avio_wl32(pb, 1024 * 1024); /* suggested buffer size */
342  if (video_par) {
343  avio_wl32(pb, video_par->width);
344  avio_wl32(pb, video_par->height);
345  } else {
346  avio_wl32(pb, 0);
347  avio_wl32(pb, 0);
348  }
349  avio_wl32(pb, 0); /* reserved */
350  avio_wl32(pb, 0); /* reserved */
351  avio_wl32(pb, 0); /* reserved */
352  avio_wl32(pb, 0); /* reserved */
353 
354  /* stream list */
355  for (i = 0; i < n; i++) {
356  AVStream *st = s->streams[i];
357  AVCodecParameters *par = st->codecpar;
358  AVIStream *avist = st->priv_data;
359  list2 = ff_start_tag(pb, "LIST");
360  ffio_wfourcc(pb, "strl");
361 
362  /* stream generic header */
363  strh = ff_start_tag(pb, "strh");
364  switch (par->codec_type) {
365  case AVMEDIA_TYPE_SUBTITLE:
366  // XSUB subtitles behave like video tracks, other subtitles
367  // are not (yet) supported.
368  if (par->codec_id != AV_CODEC_ID_XSUB) {
369  avpriv_report_missing_feature(s, "Subtitle streams other than DivX XSUB");
370  return AVERROR_PATCHWELCOME;
371  }
372  case AVMEDIA_TYPE_VIDEO:
373  ffio_wfourcc(pb, "vids");
374  break;
375  case AVMEDIA_TYPE_AUDIO:
376  ffio_wfourcc(pb, "auds");
377  break;
378 // case AVMEDIA_TYPE_TEXT:
379 // ffio_wfourcc(pb, "txts");
380 // break;
381  case AVMEDIA_TYPE_DATA:
382  ffio_wfourcc(pb, "dats");
383  break;
384  }
385  if (par->codec_type == AVMEDIA_TYPE_VIDEO ||
386  par->codec_id == AV_CODEC_ID_XSUB)
387  avio_wl32(pb, par->codec_tag);
388  else
389  avio_wl32(pb, 1);
390  avist->strh_flags_offset = avio_tell(pb);
391  avio_wl32(pb, 0); /* flags */
392  avio_wl16(pb, 0); /* priority */
393  avio_wl16(pb, 0); /* language */
394  avio_wl32(pb, 0); /* initial frame */
395 
396  ff_parse_specific_params(st, &au_byterate, &au_ssize, &au_scale);
397 
398  if ( par->codec_type == AVMEDIA_TYPE_VIDEO
399  && par->codec_id != AV_CODEC_ID_XSUB
400  && au_byterate > 1000LL*au_scale) {
401  au_byterate = 600;
402  au_scale = 1;
403  }
404  avpriv_set_pts_info(st, 64, au_scale, au_byterate);
405  if (par->codec_id == AV_CODEC_ID_XSUB)
406  au_scale = au_byterate = 0;
407 
408  avio_wl32(pb, au_scale); /* scale */
409  avio_wl32(pb, au_byterate); /* rate */
410 
411  avio_wl32(pb, 0); /* start */
412  /* remember this offset to fill later */
413  avist->frames_hdr_strm = avio_tell(pb);
414  if (!(pb->seekable & AVIO_SEEKABLE_NORMAL))
415  /* FIXME: this may be broken, but who cares */
416  avio_wl32(pb, AVI_MAX_RIFF_SIZE);
417  else
418  avio_wl32(pb, 0); /* length, XXX: filled later */
419 
420  /* suggested buffer size, is set to largest chunk size in avi_write_trailer */
421  if (par->codec_type == AVMEDIA_TYPE_VIDEO)
422  avio_wl32(pb, 1024 * 1024);
423  else if (par->codec_type == AVMEDIA_TYPE_AUDIO)
424  avio_wl32(pb, 12 * 1024);
425  else
426  avio_wl32(pb, 0);
427  avio_wl32(pb, -1); /* quality */
428  avio_wl32(pb, au_ssize); /* sample size */
429  avio_wl32(pb, 0);
430  avio_wl16(pb, par->width);
431  avio_wl16(pb, par->height);
432  ff_end_tag(pb, strh);
433 
434  if (par->codec_type != AVMEDIA_TYPE_DATA) {
435  int ret, flags;
436  enum AVPixelFormat pix_fmt;
437 
438  strf = ff_start_tag(pb, "strf");
439  switch (par->codec_type) {
440  case AVMEDIA_TYPE_SUBTITLE:
441  /* XSUB subtitles behave like video tracks, other subtitles
442  * are not (yet) supported. */
443  if (par->codec_id != AV_CODEC_ID_XSUB)
444  break;
445  case AVMEDIA_TYPE_VIDEO:
446  /* WMP expects RGB 5:5:5 rawvideo in avi to have bpp set to 16. */
447  if ( !par->codec_tag
448  && par->codec_id == AV_CODEC_ID_RAWVIDEO
449  && par->format == AV_PIX_FMT_RGB555LE
450  && par->bits_per_coded_sample == 15)
451  par->bits_per_coded_sample = 16;
452  avist->pal_offset = avio_tell(pb) + 40;
453  ff_put_bmp_header(pb, par, 0, 0, avi->flipped_raw_rgb);
454  pix_fmt = avpriv_find_pix_fmt(avpriv_pix_fmt_bps_avi,
455  par->bits_per_coded_sample);
456  if ( !par->codec_tag
457  && par->codec_id == AV_CODEC_ID_RAWVIDEO
458  && par->format != pix_fmt
459  && par->format != AV_PIX_FMT_NONE)
460  av_log(s, AV_LOG_ERROR, "%s rawvideo cannot be written to avi, output file will be unreadable\n",
461  av_get_pix_fmt_name(par->format));
462 
463  if (par->format == AV_PIX_FMT_PAL8) {
464  if (par->bits_per_coded_sample < 0 || par->bits_per_coded_sample > 8) {
465  av_log(s, AV_LOG_ERROR, "PAL8 with %d bps is not allowed\n", par->bits_per_coded_sample);
466  return AVERROR(EINVAL);
467  }
468  }
469 
470  break;
471  case AVMEDIA_TYPE_AUDIO:
472  flags = (avi->write_channel_mask == 0) ? FF_PUT_WAV_HEADER_SKIP_CHANNELMASK : 0;
473  if ((ret = ff_put_wav_header(s, pb, par, flags)) < 0)
474  return ret;
475  break;
476  default:
477  av_log(s, AV_LOG_ERROR,
478  "Invalid or not supported codec type '%s' found in the input\n",
479  (char *)av_x_if_null(av_get_media_type_string(par->codec_type), "?"));
480  return AVERROR(EINVAL);
481  }
482  ff_end_tag(pb, strf);
483  if ((t = av_dict_get(st->metadata, "title", NULL, 0))) {
484  ff_riff_write_info_tag(s->pb, "strn", t->value);
485  t = NULL;
486  }
487  if (par->codec_id == AV_CODEC_ID_XSUB
488  && (t = av_dict_get(s->streams[i]->metadata, "language", NULL, 0))) {
489  const char* langstr = ff_convert_lang_to(t->value, AV_LANG_ISO639_1);
490  t = NULL;
491  if (langstr) {
492  char* str = av_asprintf("Subtitle - %s-xx;02", langstr);
493  if (!str)
494  return AVERROR(ENOMEM);
495  ff_riff_write_info_tag(s->pb, "strn", str);
496  av_free(str);
497  }
498  }
499  }
500 
501  if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
502  write_odml_master(s, i);
503  }
504 
505  if (par->codec_type == AVMEDIA_TYPE_VIDEO &&
506  st->sample_aspect_ratio.num > 0 &&
507  st->sample_aspect_ratio.den > 0) {
508  int vprp = ff_start_tag(pb, "vprp");
509  AVRational dar = av_mul_q(st->sample_aspect_ratio,
510  (AVRational) { par->width,
511  par->height });
512  int num, den, fields, i;
513  av_reduce(&num, &den, dar.num, dar.den, 0xFFFF);
514  if (par->field_order == AV_FIELD_TT || par->field_order == AV_FIELD_BB ||
515  par->field_order == AV_FIELD_TB || par->field_order == AV_FIELD_BT) {
516  fields = 2; // interlaced
517  } else {
518  fields = 1; // progressive
519  }
520 
521  avio_wl32(pb, 0); // video format = unknown
522  avio_wl32(pb, 0); // video standard = unknown
523  // TODO: should be avg_frame_rate
524  avio_wl32(pb, (2LL*st->time_base.den + st->time_base.num - 1) / (2LL * st->time_base.num));
525  avio_wl32(pb, par->width);
526  avio_wl32(pb, par->height);
527  avio_wl16(pb, den);
528  avio_wl16(pb, num);
529  avio_wl32(pb, par->width);
530  avio_wl32(pb, par->height);
531  avio_wl32(pb, fields); // fields per frame
532 
533  for (i = 0; i < fields; i++) {
534  int start_line;
535  // OpenDML v1.02 is not very specific on what value to use for
536  // start_line when frame data is not coming from a capturing device,
537  // so just use 0/1 depending on the field order for interlaced frames
538  if (par->field_order == AV_FIELD_TT || par->field_order == AV_FIELD_TB) {
539  start_line = (i == 0) ? 0 : 1;
540  } else if (par->field_order == AV_FIELD_BB || par->field_order == AV_FIELD_BT) {
541  start_line = (i == 0) ? 1 : 0;
542  } else {
543  start_line = 0;
544  }
545 
546  avio_wl32(pb, par->height / fields); // compressed bitmap height
547  avio_wl32(pb, par->width); // compressed bitmap width
548  avio_wl32(pb, par->height / fields); // valid bitmap height
549  avio_wl32(pb, par->width); // valid bitmap width
550  avio_wl32(pb, 0); // valid bitmap X offset
551  avio_wl32(pb, 0); // valid bitmap Y offset
552  avio_wl32(pb, 0); // valid X offset in T
553  avio_wl32(pb, start_line); // valid Y start line
554  }
555  ff_end_tag(pb, vprp);
556  }
557 
558  ff_end_tag(pb, list2);
559  }
560 
561  if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
562  /* AVI could become an OpenDML one, if it grows beyond 2Gb range */
563  avi->odml_list = ff_start_tag(pb, "JUNK");
564  ffio_wfourcc(pb, "odml");
565  ffio_wfourcc(pb, "dmlh");
566  avio_wl32(pb, 248);
567  for (i = 0; i < 248; i += 4)
568  avio_wl32(pb, 0);
569  ff_end_tag(pb, avi->odml_list);
570  }
571 
572  ff_end_tag(pb, list1);
573 
574  ff_riff_write_info(s);
575 
576 
577  padding = s->metadata_header_padding;
578  if (padding < 0)
579  padding = 1016;
580 
581  /* some padding for easier tag editing */
582  if (padding) {
583  list2 = ff_start_tag(pb, "JUNK");
584  for (i = padding; i > 0; i -= 4)
585  avio_wl32(pb, 0);
586  ff_end_tag(pb, list2);
587  }
588 
589  avi->movi_list = ff_start_tag(pb, "LIST");
590  ffio_wfourcc(pb, "movi");
591 
592  return 0;
593 }
594 
595 static void update_odml_entry(AVFormatContext *s, int stream_index, int64_t ix, int size)
596 {
597  AVIOContext *pb = s->pb;
598  AVIContext *avi = s->priv_data;
599  AVIStream *avist = s->streams[stream_index]->priv_data;
600  int64_t pos;
601  int au_byterate, au_ssize, au_scale;
602 
603  pos = avio_tell(pb);
604 
605  /* Updating one entry in the AVI OpenDML master index */
606  avio_seek(pb, avist->indexes.indx_start - 8, SEEK_SET);
607  ffio_wfourcc(pb, "indx"); /* enabling this entry */
608  avio_skip(pb, 8);
609  avio_wl32(pb, avi->riff_id - avist->indexes.master_odml_riff_id_base); /* nEntriesInUse */
610  avio_skip(pb, 16 * (avi->riff_id - avist->indexes.master_odml_riff_id_base));
611  avio_wl64(pb, ix); /* qwOffset */
612  avio_wl32(pb, size); /* dwSize */
613  ff_parse_specific_params(s->streams[stream_index], &au_byterate, &au_ssize, &au_scale);
614  if (s->streams[stream_index]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && au_ssize > 0) {
615  uint32_t audio_segm_size = (avist->audio_strm_length - avist->indexes.audio_strm_offset);
616  if ((audio_segm_size % au_ssize > 0) && !avist->sample_requested) {
617  avpriv_request_sample(s, "OpenDML index duration for audio packets with partial frames");
618  avist->sample_requested = 1;
619  }
620  avio_wl32(pb, audio_segm_size / au_ssize); /* dwDuration (sample count) */
621  } else
622  avio_wl32(pb, avist->indexes.entry); /* dwDuration (packet count) */
623 
624  avio_seek(pb, pos, SEEK_SET);
625 }
626 
627 static int avi_write_ix(AVFormatContext *s)
628 {
629  AVIOContext *pb = s->pb;
630  AVIContext *avi = s->priv_data;
631  char tag[5];
632  char ix_tag[] = "ix00";
633  int i, j;
634 
635  av_assert0(pb->seekable & AVIO_SEEKABLE_NORMAL);
636 
637  for (i = 0; i < s->nb_streams; i++) {
638  AVIStream *avist = s->streams[i]->priv_data;
639  if (avi->riff_id - avist->indexes.master_odml_riff_id_base == avi->master_index_max_size) {
640  int64_t pos;
641  int size = AVI_MASTER_INDEX_PREFIX_SIZE + AVI_MASTER_INDEX_ENTRY_SIZE * avi->master_index_max_size;
642 
643  pos = avio_tell(pb);
644  update_odml_entry(s, i, pos, size);
645  write_odml_master(s, i);
646  av_assert1(avio_tell(pb) - pos == size);
647  avist->indexes.master_odml_riff_id_base = avi->riff_id - 1;
648  }
649  av_assert0(avi->riff_id - avist->indexes.master_odml_riff_id_base < avi->master_index_max_size);
650  }
651 
652  for (i = 0; i < s->nb_streams; i++) {
653  AVIStream *avist = s->streams[i]->priv_data;
654  int64_t ix;
655 
656  avi_stream2fourcc(tag, i, s->streams[i]->codecpar->codec_type);
657  ix_tag[3] = '0' + i;
658 
659  /* Writing AVI OpenDML leaf index chunk */
660  ix = avio_tell(pb);
661  ffio_wfourcc(pb, ix_tag); /* ix?? */
662  avio_wl32(pb, avist->indexes.entry * 8 + 24);
663  /* chunk size */
664  avio_wl16(pb, 2); /* wLongsPerEntry */
665  avio_w8(pb, 0); /* bIndexSubType (0 == frame index) */
666  avio_w8(pb, 1); /* bIndexType (1 == AVI_INDEX_OF_CHUNKS) */
667  avio_wl32(pb, avist->indexes.entry);
668  /* nEntriesInUse */
669  ffio_wfourcc(pb, tag); /* dwChunkId */
670  avio_wl64(pb, avi->movi_list); /* qwBaseOffset */
671  avio_wl32(pb, 0); /* dwReserved_3 (must be 0) */
672 
673  for (j = 0; j < avist->indexes.entry; j++) {
674  AVIIentry *ie = avi_get_ientry(&avist->indexes, j);
675  avio_wl32(pb, ie->pos + 8);
676  avio_wl32(pb, ((uint32_t) ie->len & ~0x80000000) |
677  (ie->flags & 0x10 ? 0 : 0x80000000));
678  }
679 
680  update_odml_entry(s, i, ix, avio_tell(pb) - ix);
681  }
682  return 0;
683 }
684 
685 static int avi_write_idx1(AVFormatContext *s)
686 {
687  AVIOContext *pb = s->pb;
688  AVIContext *avi = s->priv_data;
689  int64_t idx_chunk;
690  int i;
691  char tag[5];
692 
693  if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
694  AVIStream *avist;
695  AVIIentry *ie = 0, *tie;
696  int empty, stream_id = -1;
697 
698  idx_chunk = ff_start_tag(pb, "idx1");
699  for (i = 0; i < s->nb_streams; i++) {
700  avist = s->streams[i]->priv_data;
701  avist->entry = 0;
702  }
703 
704  do {
705  empty = 1;
706  for (i = 0; i < s->nb_streams; i++) {
707  avist = s->streams[i]->priv_data;
708  if (avist->indexes.entry <= avist->entry)
709  continue;
710 
711  tie = avi_get_ientry(&avist->indexes, avist->entry);
712  if (empty || tie->pos < ie->pos) {
713  ie = tie;
714  stream_id = i;
715  }
716  empty = 0;
717  }
718  if (!empty) {
719  avist = s->streams[stream_id]->priv_data;
720  if (*ie->tag)
721  ffio_wfourcc(pb, ie->tag);
722  else {
723  avi_stream2fourcc(tag, stream_id,
724  s->streams[stream_id]->codecpar->codec_type);
725  ffio_wfourcc(pb, tag);
726  }
727  avio_wl32(pb, ie->flags);
728  avio_wl32(pb, ie->pos);
729  avio_wl32(pb, ie->len);
730  avist->entry++;
731  }
732  } while (!empty);
733  ff_end_tag(pb, idx_chunk);
734 
735  avi_write_counters(s, avi->riff_id);
736  }
737  return 0;
738 }
739 
740 static int write_skip_frames(AVFormatContext *s, int stream_index, int64_t dts)
741 {
742  AVIStream *avist = s->streams[stream_index]->priv_data;
743  AVCodecParameters *par = s->streams[stream_index]->codecpar;
744 
745  ff_dlog(s, "dts:%s packet_count:%d stream_index:%d\n", av_ts2str(dts), avist->packet_count, stream_index);
746  while (par->block_align == 0 && dts != AV_NOPTS_VALUE &&
747  dts > avist->packet_count && par->codec_id != AV_CODEC_ID_XSUB && avist->packet_count) {
748  AVPacket empty_packet;
749 
750  if (dts - avist->packet_count > 60000) {
751  av_log(s, AV_LOG_ERROR, "Too large number of skipped frames %"PRId64" > 60000\n", dts - avist->packet_count);
752  return AVERROR(EINVAL);
753  }
754 
755  av_init_packet(&empty_packet);
756  empty_packet.size = 0;
757  empty_packet.data = NULL;
758  empty_packet.stream_index = stream_index;
759  avi_write_packet_internal(s, &empty_packet);
760  ff_dlog(s, "dup dts:%s packet_count:%d\n", av_ts2str(dts), avist->packet_count);
761  }
762 
763  return 0;
764 }
765 
766 static int avi_write_packet(AVFormatContext *s, AVPacket *pkt)
767 {
768  const int stream_index = pkt->stream_index;
769  AVCodecParameters *par = s->streams[stream_index]->codecpar;
770  int ret;
771 
772  if (par->codec_id == AV_CODEC_ID_H264 && par->codec_tag == MKTAG('H','2','6','4') && pkt->size) {
773  ret = ff_check_h264_startcode(s, s->streams[stream_index], pkt);
774  if (ret < 0)
775  return ret;
776  }
777 
778  if ((ret = write_skip_frames(s, stream_index, pkt->dts)) < 0)
779  return ret;
780 
781  if (!pkt->size)
782  return avi_write_packet_internal(s, pkt); /* Passthrough */
783 
784  if (par->codec_type == AVMEDIA_TYPE_VIDEO) {
785  AVIStream *avist = s->streams[stream_index]->priv_data;
786  AVIOContext *pb = s->pb;
787  AVPacket *opkt = pkt;
788  int reshuffle_ret;
789  if (par->codec_id == AV_CODEC_ID_RAWVIDEO && par->codec_tag == 0) {
790  int64_t bpc = par->bits_per_coded_sample != 15 ? par->bits_per_coded_sample : 16;
791  int expected_stride = ((par->width * bpc + 31) >> 5)*4;
792  reshuffle_ret = ff_reshuffle_raw_rgb(s, &pkt, par, expected_stride);
793  if (reshuffle_ret < 0)
794  return reshuffle_ret;
795  } else
796  reshuffle_ret = 0;
797  if (par->format == AV_PIX_FMT_PAL8) {
798  ret = ff_get_packet_palette(s, opkt, reshuffle_ret, avist->palette);
799  if (ret < 0)
800  goto fail;
801  if (ret) {
802  int pal_size = 1 << par->bits_per_coded_sample;
803  int pc_tag, i;
804 
805  av_assert0(par->bits_per_coded_sample >= 0 && par->bits_per_coded_sample <= 8);
806 
807  if ((pb->seekable & AVIO_SEEKABLE_NORMAL) && avist->pal_offset) {
808  int64_t cur_offset = avio_tell(pb);
809  avio_seek(pb, avist->pal_offset, SEEK_SET);
810  for (i = 0; i < pal_size; i++) {
811  uint32_t v = avist->palette[i];
812  avio_wl32(pb, v & 0xffffff);
813  }
814  avio_seek(pb, cur_offset, SEEK_SET);
815  memcpy(avist->old_palette, avist->palette, pal_size * 4);
816  avist->pal_offset = 0;
817  }
818  if (memcmp(avist->palette, avist->old_palette, pal_size * 4)) {
819  unsigned char tag[5];
820  avi_stream2fourcc(tag, stream_index, par->codec_type);
821  tag[2] = 'p'; tag[3] = 'c';
822  if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) {
823  if (avist->strh_flags_offset) {
824  int64_t cur_offset = avio_tell(pb);
825  avio_seek(pb, avist->strh_flags_offset, SEEK_SET);
826  avio_wl32(pb, AVISF_VIDEO_PALCHANGES);
827  avio_seek(pb, cur_offset, SEEK_SET);
828  avist->strh_flags_offset = 0;
829  }
830  ret = avi_add_ientry(s, stream_index, tag, AVIIF_NO_TIME,
831  pal_size * 4 + 4);
832  if (ret < 0)
833  goto fail;
834  }
835  pc_tag = ff_start_tag(pb, tag);
836  avio_w8(pb, 0);
837  avio_w8(pb, pal_size & 0xFF);
838  avio_wl16(pb, 0); // reserved
839  for (i = 0; i < pal_size; i++) {
840  uint32_t v = avist->palette[i];
841  avio_wb32(pb, v<<8);
842  }
843  ff_end_tag(pb, pc_tag);
844  memcpy(avist->old_palette, avist->palette, pal_size * 4);
845  }
846  }
847  }
848  if (reshuffle_ret) {
849  ret = avi_write_packet_internal(s, pkt);
850 
851 fail:
852  if (reshuffle_ret)
853  av_packet_free(&pkt);
854  return ret;
855  }
856  }
857 
858  return avi_write_packet_internal(s, pkt);
859 }
860 
861 static int avi_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
862 {
863  unsigned char tag[5];
864  unsigned int flags = 0;
865  const int stream_index = pkt->stream_index;
866  int size = pkt->size;
867  AVIContext *avi = s->priv_data;
868  AVIOContext *pb = s->pb;
869  AVIStream *avist = s->streams[stream_index]->priv_data;
870  AVCodecParameters *par = s->streams[stream_index]->codecpar;
871 
872  if (pkt->dts != AV_NOPTS_VALUE)
873  avist->last_dts = pkt->dts + pkt->duration;
874 
875  avist->packet_count++;
876 
877  // Make sure to put an OpenDML chunk when the file size exceeds the limits
878  if ((pb->seekable & AVIO_SEEKABLE_NORMAL) &&
879  (avio_tell(pb) - avi->riff_start > AVI_MAX_RIFF_SIZE)) {
880  avi_write_ix(s);
881  ff_end_tag(pb, avi->movi_list);
882 
883  if (avi->riff_id == 1)
884  avi_write_idx1(s);
885 
886  ff_end_tag(pb, avi->riff_start);
887  avi->movi_list = avi_start_new_riff(s, pb, "AVIX", "movi");
888  }
889 
890  avi_stream2fourcc(tag, stream_index, par->codec_type);
891  if (pkt->flags & AV_PKT_FLAG_KEY)
892  flags = 0x10;
893  if (par->codec_type == AVMEDIA_TYPE_AUDIO)
894  avist->audio_strm_length += size;
895 
896  if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) {
897  int ret;
898  ret = avi_add_ientry(s, stream_index, NULL, flags, size);
899  if (ret < 0)
900  return ret;
901  }
902 
903  avio_write(pb, tag, 4);
904  avio_wl32(pb, size);
905  avio_write(pb, pkt->data, size);
906  if (size & 1)
907  avio_w8(pb, 0);
908 
909  return 0;
910 }
911 
912 static int avi_write_trailer(AVFormatContext *s)
913 {
914  AVIContext *avi = s->priv_data;
915  AVIOContext *pb = s->pb;
916  int res = 0;
917  int i, n, nb_frames;
918  int64_t file_size;
919 
920  for (i = 0; i < s->nb_streams; i++) {
921  AVIStream *avist = s->streams[i]->priv_data;
922  write_skip_frames(s, i, avist->last_dts);
923  }
924 
925  if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
926  if (avi->riff_id == 1) {
927  ff_end_tag(pb, avi->movi_list);
928  res = avi_write_idx1(s);
929  ff_end_tag(pb, avi->riff_start);
930  } else {
931  avi_write_ix(s);
932  ff_end_tag(pb, avi->movi_list);
933  ff_end_tag(pb, avi->riff_start);
934 
935  file_size = avio_tell(pb);
936  avio_seek(pb, avi->odml_list - 8, SEEK_SET);
937  ffio_wfourcc(pb, "LIST"); /* Making this AVI OpenDML one */
938  avio_skip(pb, 16);
939 
940  for (n = nb_frames = 0; n < s->nb_streams; n++) {
941  AVCodecParameters *par = s->streams[n]->codecpar;
942  AVIStream *avist = s->streams[n]->priv_data;
943 
944  if (par->codec_type == AVMEDIA_TYPE_VIDEO) {
945  if (nb_frames < avist->packet_count)
946  nb_frames = avist->packet_count;
947  } else {
948  if (par->codec_id == AV_CODEC_ID_MP2 ||
949  par->codec_id == AV_CODEC_ID_MP3)
950  nb_frames += avist->packet_count;
951  }
952  }
953  avio_wl32(pb, nb_frames);
954  avio_seek(pb, file_size, SEEK_SET);
955 
956  avi_write_counters(s, avi->riff_id);
957  }
958  }
959 
960  if (avi->riff_id >= avi->master_index_max_size) {
961  int index_space = AVI_MASTER_INDEX_PREFIX_SIZE +
962  AVI_MASTER_INDEX_ENTRY_SIZE * avi->riff_id;
963  av_log(s, AV_LOG_WARNING, "Output file not strictly OpenDML compliant, "
964  "consider re-muxing with 'reserve_index_space' option value >= %d\n",
965  index_space);
966  }
967 
968  for (i = 0; i < s->nb_streams; i++) {
969  AVIStream *avist = s->streams[i]->priv_data;
970  if (pb->seekable & AVIO_SEEKABLE_NORMAL) {
971  avio_seek(pb, avist->frames_hdr_strm + 4, SEEK_SET);
972  avio_wl32(pb, avist->max_size);
973  }
974  }
975 
976  return res;
977 }
978 
979 static void avi_deinit(AVFormatContext *s)
980 {
981  for (int i = 0; i < s->nb_streams; i++) {
982  AVIStream *avist = s->streams[i]->priv_data;
983  if (!avist)
984  continue;
985  for (int j = 0; j < avist->indexes.ents_allocated / AVI_INDEX_CLUSTER_SIZE; j++)
986  av_freep(&avist->indexes.cluster[j]);
987  av_freep(&avist->indexes.cluster);
988  avist->indexes.ents_allocated = avist->indexes.entry = 0;
989  }
990 }
991 
992 #define OFFSET(x) offsetof(AVIContext, x)
993 #define ENC AV_OPT_FLAG_ENCODING_PARAM
994 static const AVOption options[] = {
995  { "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 },
996  { "write_channel_mask", "write channel mask into wave format header", OFFSET(write_channel_mask), AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, ENC },
997  { "flipped_raw_rgb", "Raw RGB bitmaps are stored bottom-up", OFFSET(flipped_raw_rgb), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, ENC },
998  { NULL },
999 };
1000 
1001 static const AVClass avi_muxer_class = {
1002  .class_name = "AVI muxer",
1003  .item_name = av_default_item_name,
1004  .option = options,
1005  .version = LIBAVUTIL_VERSION_INT,
1006 };
1007 
1008 AVOutputFormat ff_avi_muxer = {
1009  .name = "avi",
1010  .long_name = NULL_IF_CONFIG_SMALL("AVI (Audio Video Interleaved)"),
1011  .mime_type = "video/x-msvideo",
1012  .extensions = "avi",
1013  .priv_data_size = sizeof(AVIContext),
1014  .audio_codec = CONFIG_LIBMP3LAME ? AV_CODEC_ID_MP3 : AV_CODEC_ID_AC3,
1015  .video_codec = AV_CODEC_ID_MPEG4,
1016  .init = avi_init,
1017  .deinit = avi_deinit,
1018  .write_header = avi_write_header,
1019  .write_packet = avi_write_packet,
1020  .write_trailer = avi_write_trailer,
1021  .codec_tag = (const AVCodecTag * const []) {
1022  ff_codec_bmp_tags, ff_codec_wav_tags, 0
1023  },
1024  .priv_class = &avi_muxer_class,
1025 };
AVI_MASTER_INDEX_PREFIX_SIZE
#define AVI_MASTER_INDEX_PREFIX_SIZE
Definition: avienc.c:54
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#define NULL
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enum AVFieldOrder field_order
Video only.
Definition: codec_par.h:141
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Definition: avio.h:161
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Definition: opt.h:248
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Write WAVEFORMAT header structure.
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Set the time base and wrapping info for a given stream.
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#define avpriv_request_sample(...)
Definition: tableprint_vlc.h:39
AVIIndex::audio_strm_offset
int64_t audio_strm_offset
Definition: avienc.c:60
AVCodecParameters::codec_id
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:60
AVStream::sample_aspect_ratio
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
Definition: avformat.h:938
AVRational::num
int num
Numerator.
Definition: rational.h:59
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
AVPacket::size
int size
Definition: packet.h:364
avio_seek
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:253
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
avutil.h
Convenience header that includes libavutil&#39;s core.
avi_stream2fourcc
static char * avi_stream2fourcc(char *tag, int index, enum AVMediaType type)
Definition: avienc.c:179
type
GLint GLenum type
Definition: opengl_enc.c:104
AV_CODEC_ID_MPEG4
Definition: codec_id.h:61
AVStream::priv_data
void * priv_data
Definition: avformat.h:891
avio_skip
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
Definition: aviobuf.c:341
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:237
pkt
static AVPacket pkt
Definition: demuxing_decoding.c:54
ff_avi_muxer
AVOutputFormat ff_avi_muxer
Definition: avienc.c:1008
AV_CODEC_ID_H264
Definition: codec_id.h:76
AVIStream::frames_hdr_strm
int64_t frames_hdr_strm
Definition: avienc.c:79
AVCodecParameters
This struct describes the properties of an encoded stream.
Definition: codec_par.h:52
AVFormatContext
Format I/O context.
Definition: avformat.h:1351
AVIContext::odml_list
int64_t odml_list
Definition: avienc.c:69
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:72
AVIF_ISINTERLEAVED
#define AVIF_ISINTERLEAVED
Definition: avi.h:26
av_assert0
#define av_assert0(cond)
assert() equivalent, that is always enabled.
Definition: avassert.h:37
dict.h
Public dictionary API.
AV_FIELD_TB
Definition: codec_par.h:41
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:64
avio_wl32
void avio_wl32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:379
av_cold
#define av_cold
Definition: attributes.h:88
av_malloc
#define av_malloc(s)
Definition: tableprint_vlc.h:31
AVMEDIA_TYPE_DATA
Opaque data information usually continuous.
Definition: avutil.h:203
AVCodecParameters::width
int width
Video only.
Definition: codec_par.h:126
AV_PIX_FMT_PAL8
8 bits with AV_PIX_FMT_RGB32 palette
Definition: pixfmt.h:77
opt.h
AVOptions.
timestamp.h
timestamp utils, mostly useful for debugging/logging purposes
avi_add_ientry
static int avi_add_ientry(AVFormatContext *s, int stream_index, char *tag, unsigned int flags, unsigned int size)
Definition: avienc.c:106
AVPacket::duration
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: packet.h:381
AVIContext::movi_list
int64_t movi_list
Definition: avidec.c:74
OFFSET
#define OFFSET(x)
Definition: avienc.c:992
AVFormatContext::streams
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1419
AV_FIELD_TT
Definition: codec_par.h:39
avio_internal.h
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
AVPacket::data
uint8_t * data
Definition: packet.h:363
AVIContext::riff_start
int64_t riff_start
Definition: avienc.c:69
ff_dlog
#define ff_dlog(a,...)
Definition: tableprint_vlc.h:29
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:158
size
ptrdiff_t size
Definition: opengl_enc.c:100
avio_tell
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:557
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
avio_write
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
Definition: aviobuf.c:225
ffio_wfourcc
static av_always_inline void ffio_wfourcc(AVIOContext *pb, const uint8_t *s)
Definition: avio_internal.h:58
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
avi_muxer_class
static const AVClass avi_muxer_class
Definition: avienc.c:1001
AVCodecParameters::bit_rate
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
Definition: codec_par.h:89
AV_PKT_FLAG_KEY
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: packet.h:396
avio_wl64
void avio_wl64(AVIOContext *s, uint64_t val)
Definition: aviobuf.c:447
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_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:142
AVIStream::old_palette
uint32_t old_palette[AVPALETTE_COUNT]
Definition: avienc.c:93
ENC
#define ENC
Definition: avienc.c:993
AVI_MAX_STREAM_COUNT
#define AVI_MAX_STREAM_COUNT
Definition: avi.h:32
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
avi_write_idx1
static int avi_write_idx1(AVFormatContext *s)
Definition: avienc.c:685
AVIContext::master_index_max_size
int master_index_max_size
Definition: avienc.c:73
ff_parse_specific_params
void ff_parse_specific_params(AVStream *st, int *au_rate, int *au_ssize, int *au_scale)
Definition: riffenc.c:266
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:1556
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
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:153
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:296
AVIIentry::tag
char tag[4]
Definition: avienc.c:47
AV_LOG_DEBUG
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:215
video_st
AVStream * video_st
Definition: movenc.c:59
AV_CODEC_ID_MP3
preferred ID for decoding MPEG audio layer 1, 2 or 3
Definition: codec_id.h:412
AVCodecParameters::codec_type
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:56
AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
avassert.h
simple assert() macros that are a bit more flexible than ISO C assert().
AVIIentry::flags
unsigned int flags
Definition: avienc.c:48
ff_codec_wav_tags
const AVCodecTag ff_codec_wav_tags[]
Definition: riff.c:506
FFMAX
#define FFMAX(a, b)
Definition: common.h:94
fail
#define fail()
Definition: checkasm.h:123
AVPacket::flags
int flags
A combination of AV_PKT_FLAG values.
Definition: packet.h:369
AVIStream::packet_count
int packet_count
Definition: avienc.c:81
av_asprintf
char * av_asprintf(const char *fmt,...)
Definition: avstring.c:113
AVIIentry::len
unsigned int len
Definition: avienc.c:50
internal.h
common internal API header
AVFormatContext::nb_streams
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1407
update_odml_entry
static void update_odml_entry(AVFormatContext *s, int stream_index, int64_t ix, int size)
Definition: avienc.c:595
AVCodecParameters::block_align
int block_align
Audio only.
Definition: codec_par.h:177
AVIOContext::seekable
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Definition: avio.h:260
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:154
av_assert1
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
AV_TIME_BASE
#define AV_TIME_BASE
Internal time base represented as integer.
Definition: avutil.h:254
FFMIN
#define FFMIN(a, b)
Definition: common.h:96
raw.h
Raw Video Codec.
ff_codec_bmp_tags
const AVCodecTag ff_codec_bmp_tags[]
Definition: riff.c:32
AVIContext::flipped_raw_rgb
int flipped_raw_rgb
Definition: avienc.c:75
write_trailer
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:98
AVOutputFormat::name
const char * name
Definition: avformat.h:500
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:5723
riff.h
internal header for RIFF based (de)muxers do NOT include this in end user applications ...
AV_OPT_TYPE_BOOL
Definition: opt.h:242
avi_write_trailer
static int avi_write_trailer(AVFormatContext *s)
Definition: avienc.c:912
s
#define s(width, name)
Definition: cbs_vp9.c:257
AVStream::metadata
AVDictionary * metadata
Definition: avformat.h:940
AV_FIELD_BT
Definition: codec_par.h:42
AV_CODEC_ID_XSUB
Definition: codec_id.h:512
AVIIndex::indx_start
int64_t indx_start
Definition: avienc.c:59
AVIStream::audio_strm_length
int64_t audio_strm_length
Definition: avienc.c:80
avi_write_header
static int avi_write_header(AVFormatContext *s)
Definition: avienc.c:259
AVIF_HASINDEX
#define AVIF_HASINDEX
Definition: avi.h:24
if
if(ret)
Definition: filter_design.txt:179
AVFormatContext::metadata_header_padding
int metadata_header_padding
Number of bytes to be written as padding in a metadata header.
Definition: avformat.h:1851
AVStream
Stream structure.
Definition: avformat.h:876
AVIStream::pal_offset
int64_t pal_offset
Definition: avienc.c:94
AVERROR_PATCHWELCOME
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
avi_write_packet
static int avi_write_packet(AVFormatContext *s, AVPacket *pkt)
Definition: avienc.c:766
AVIO_SEEKABLE_NORMAL
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
Definition: avio.h:40
avpriv_find_pix_fmt
enum AVPixelFormat avpriv_find_pix_fmt(const PixelFormatTag *tags, unsigned int fourcc)
Definition: utils.c:468
avi_init
static av_cold int avi_init(struct AVFormatContext *s)
Definition: avienc.c:143
AV_TIME_BASE_Q
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
Definition: avutil.h:260
AVFormatContext::pb
AVIOContext * pb
I/O context.
Definition: avformat.h:1393
options
static const AVOption options[]
Definition: avienc.c:994
avio_w8
void avio_w8(AVIOContext *s, int b)
Definition: aviobuf.c:203
AVIStream::sample_requested
int sample_requested
Definition: avienc.c:84
AV_CODEC_ID_AC3
Definition: codec_id.h:414
AVIIF_NO_TIME
#define AVIIF_NO_TIME
Definition: avi.h:39
ff_riff_write_info
void ff_riff_write_info(AVFormatContext *s)
Write all recognized RIFF tags from s->metadata.
Definition: riffenc.c:328
AV_STRINGIFY
#define AV_STRINGIFY(s)
Definition: macros.h:36
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:67
AVI_INDEX_CLUSTER_SIZE
#define AVI_INDEX_CLUSTER_SIZE
Definition: avienc.c:53
index
int index
Definition: gxfenc.c:89
AVRational
Rational number (pair of numerator and denominator).
Definition: rational.h:58
AVI_MASTER_INDEX_ENTRY_SIZE
#define AVI_MASTER_INDEX_ENTRY_SIZE
Definition: avienc.c:55
AVMediaType
AVMediaType
Definition: avutil.h:199
avi_deinit
static void avi_deinit(AVFormatContext *s)
Definition: avienc.c:979
AV_CODEC_ID_MP2
Definition: codec_id.h:411
avi_get_ientry
static AVIIentry * avi_get_ientry(const AVIIndex *idx, int ent_id)
Definition: avienc.c:99
AVPALETTE_COUNT
#define AVPALETTE_COUNT
Definition: pixfmt.h:33
AVIStream::strh_flags_offset
int64_t strh_flags_offset
Definition: avienc.c:90
write_odml_master
static void write_odml_master(AVFormatContext *s, int stream_index)
Definition: avienc.c:231
convert_header.str
string str
Definition: convert_header.py:20
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.
AVIIndex::cluster
AVIIentry ** cluster
Definition: avienc.c:64
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
AVStream::duration
int64_t duration
Decoding: duration of the stream, in stream time base.
Definition: avformat.h:925
bitrate
int64_t bitrate
Definition: h264_levels.c:131
avi_write_packet_internal
static int avi_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
Definition: avienc.c:861
avformat.h
Main libavformat public API header.
AV_FIELD_BB
Definition: codec_par.h:40
AVIContext::write_channel_mask
int write_channel_mask
Definition: avienc.c:74
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:209
av_init_packet
void av_init_packet(AVPacket *pkt)
Initialize optional fields of a packet with default values.
Definition: avpacket.c:35
AVRational::den
int den
Denominator.
Definition: rational.h:60
av_free
#define av_free(p)
Definition: tableprint_vlc.h:34
AVIContext::reserve_index_space
int reserve_index_space
Definition: avienc.c:72
AVDictionaryEntry::value
char * value
Definition: dict.h:87
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
AVIContext::frames_hdr_all
int64_t frames_hdr_all
Definition: avienc.c:70
avpriv_pix_fmt_bps_avi
const PixelFormatTag avpriv_pix_fmt_bps_avi[]
Definition: raw.c:315
AVFormatContext::priv_data
void * priv_data
Format private data.
Definition: avformat.h:1379
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:59
write_header
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:346
AVIStream::entry
int entry
Definition: avienc.c:82
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
AVIStream::indexes
AVIIndex indexes
Definition: avienc.c:88
AVCodecParameters::bits_per_coded_sample
int bits_per_coded_sample
The number of bits per sample in the codedwords.
Definition: codec_par.h:102
avi_write_counters
static int avi_write_counters(AVFormatContext *s, int riff_id)
Definition: avienc.c:198
AVPacket::dts
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
Definition: packet.h:362
av_mul_q
AVRational av_mul_q(AVRational b, AVRational c)
Multiply two rationals.
Definition: rational.c:80
avio_wb32
void avio_wb32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:387
AVFormatContext::duration
int64_t duration
Duration of the stream, in AV_TIME_BASE fractional seconds.
Definition: avformat.h:1466
AVIF_TRUSTCKTYPE
#define AVIF_TRUSTCKTYPE
Definition: avi.h:27
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AVStream::codecpar
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1023
AV_CODEC_ID_RAWVIDEO
Definition: codec_id.h:62
AVCodecParameters::codec_tag
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: codec_par.h:64
AVIIndex::entry
int entry
Definition: avienc.c:61
AVIStream::palette
uint32_t palette[AVPALETTE_COUNT]
Definition: avienc.c:92
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:2489
AVPacket::stream_index
int stream_index
Definition: packet.h:365
AVIStream::max_size
int max_size
Definition: avienc.c:83
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:905
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
AVIStream::last_dts
int64_t last_dts
Definition: avienc.c:86
AVMEDIA_TYPE_SUBTITLE
Definition: avutil.h:204
MKTAG
#define MKTAG(a, b, c, d)
Definition: common.h:406
id
enum AVCodecID id
Definition: extract_extradata_bsf.c:332
AVISF_VIDEO_PALCHANGES
#define AVISF_VIDEO_PALCHANGES
Definition: avi.h:35
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:64
AVPacket
This structure stores compressed data.
Definition: packet.h:340
avi_write_ix
static int avi_write_ix(AVFormatContext *s)
Definition: avienc.c:627
AV_LANG_ISO639_1
3-char terminological language codes as per ISO-IEC 639-2
Definition: avlanguage.h:33
i
int i
Definition: input.c:407
AVIContext::riff_id
int riff_id
Definition: avienc.c:71
AV_NOPTS_VALUE
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
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