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oggenc.c
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1 /*
2  * Ogg muxer
3  * Copyright (c) 2007 Baptiste Coudurier <baptiste dot coudurier at free dot fr>
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 <stdint.h>
23 
24 #include "libavutil/crc.h"
25 #include "libavutil/mathematics.h"
26 #include "libavutil/opt.h"
27 #include "libavutil/random_seed.h"
28 #include "libavcodec/xiph.h"
29 #include "libavcodec/bytestream.h"
30 #include "libavcodec/flac.h"
31 #include "avformat.h"
32 #include "avio_internal.h"
33 #include "internal.h"
34 #include "vorbiscomment.h"
35 
36 #define MAX_PAGE_SIZE 65025
37 
38 typedef struct OGGPage {
39  int64_t start_granule;
40  int64_t granule;
46  uint16_t size;
47 } OGGPage;
48 
49 typedef struct OGGStreamContext {
50  unsigned page_counter;
52  int header_len[3];
53  /** for theora granule */
54  int kfgshift;
55  int64_t last_kf_pts;
56  int vrev;
57  /* for VP8 granule */
58  int isvp8;
59  int eos;
60  unsigned page_count; ///< number of page buffered
61  OGGPage page; ///< current page
62  unsigned serial_num; ///< serial number
63  int64_t last_granule; ///< last packet granule
65 
66 typedef struct OGGPageList {
68  struct OGGPageList *next;
69 } OGGPageList;
70 
71 typedef struct OGGContext {
72  const AVClass *class;
74  int pref_size; ///< preferred page size (0 => fill all segments)
75  int64_t pref_duration; ///< preferred page duration (0 => fill all segments)
77 } OGGContext;
78 
79 #define OFFSET(x) offsetof(OGGContext, x)
80 #define PARAM AV_OPT_FLAG_ENCODING_PARAM
81 
82 static const AVOption options[] = {
83  { "serial_offset", "serial number offset",
84  OFFSET(serial_offset), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, PARAM },
85  { "oggpagesize", "Set preferred Ogg page size.",
86  OFFSET(pref_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, MAX_PAGE_SIZE, PARAM},
87  { "pagesize", "preferred page size in bytes (deprecated)",
88  OFFSET(pref_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, MAX_PAGE_SIZE, PARAM },
89  { "page_duration", "preferred page duration, in microseconds",
90  OFFSET(pref_duration), AV_OPT_TYPE_INT64, { .i64 = 1000000 }, 0, INT64_MAX, PARAM },
91  { NULL },
92 };
93 
94 #define OGG_CLASS(flavor, name)\
95 static const AVClass flavor ## _muxer_class = {\
96  .class_name = #name " muxer",\
97  .item_name = av_default_item_name,\
98  .option = options,\
99  .version = LIBAVUTIL_VERSION_INT,\
100 };
101 
102 static void ogg_update_checksum(AVFormatContext *s, AVIOContext *pb, int64_t crc_offset)
103 {
104  int64_t pos = avio_tell(pb);
105  uint32_t checksum = ffio_get_checksum(pb);
106  avio_seek(pb, crc_offset, SEEK_SET);
107  avio_wb32(pb, checksum);
108  avio_seek(pb, pos, SEEK_SET);
109 }
110 
111 static int ogg_write_page(AVFormatContext *s, OGGPage *page, int extra_flags)
112 {
113  OGGStreamContext *oggstream = s->streams[page->stream_index]->priv_data;
114  AVIOContext *pb;
115  int64_t crc_offset;
116  int ret, size;
117  uint8_t *buf;
118 
119  ret = avio_open_dyn_buf(&pb);
120  if (ret < 0)
121  return ret;
123  ffio_wfourcc(pb, "OggS");
124  avio_w8(pb, 0);
125  avio_w8(pb, page->flags | extra_flags);
126  avio_wl64(pb, page->granule);
127  avio_wl32(pb, oggstream->serial_num);
128  avio_wl32(pb, oggstream->page_counter++);
129  crc_offset = avio_tell(pb);
130  avio_wl32(pb, 0); // crc
131  avio_w8(pb, page->segments_count);
132  avio_write(pb, page->segments, page->segments_count);
133  avio_write(pb, page->data, page->size);
134 
135  ogg_update_checksum(s, pb, crc_offset);
136  avio_flush(pb);
137 
138  size = avio_close_dyn_buf(pb, &buf);
139  if (size < 0)
140  return size;
141 
142  avio_write(s->pb, buf, size);
143  avio_flush(s->pb);
144  av_free(buf);
145  oggstream->page_count--;
146  return 0;
147 }
148 
149 static int ogg_key_granule(OGGStreamContext *oggstream, int64_t granule)
150 {
151  return (oggstream->kfgshift && !(granule & ((1<<oggstream->kfgshift)-1))) ||
152  (oggstream->isvp8 && !((granule >> 3) & 0x07ffffff));
153 }
154 
155 static int64_t ogg_granule_to_timestamp(OGGStreamContext *oggstream, int64_t granule)
156 {
157  if (oggstream->kfgshift)
158  return (granule>>oggstream->kfgshift) +
159  (granule & ((1<<oggstream->kfgshift)-1));
160  else if (oggstream->isvp8)
161  return granule >> 32;
162  else
163  return granule;
164 }
165 
167 {
168  AVStream *st2 = s->streams[next->stream_index];
169  AVStream *st = s->streams[page->stream_index];
170  int64_t next_granule, cur_granule;
171 
172  if (next->granule == -1 || page->granule == -1)
173  return 0;
174 
175  next_granule = av_rescale_q(ogg_granule_to_timestamp(st2->priv_data, next->granule),
176  st2->time_base, AV_TIME_BASE_Q);
177  cur_granule = av_rescale_q(ogg_granule_to_timestamp(st->priv_data, page->granule),
178  st ->time_base, AV_TIME_BASE_Q);
179  return next_granule > cur_granule;
180 }
181 
182 static int ogg_reset_cur_page(OGGStreamContext *oggstream)
183 {
184  oggstream->page.granule = -1;
185  oggstream->page.flags = 0;
186  oggstream->page.segments_count = 0;
187  oggstream->page.size = 0;
188  return 0;
189 }
190 
192 {
193  OGGContext *ogg = s->priv_data;
194  OGGPageList **p = &ogg->page_list;
195  OGGPageList *l = av_mallocz(sizeof(*l));
196 
197  if (!l)
198  return AVERROR(ENOMEM);
199  l->page = oggstream->page;
200 
201  oggstream->page.start_granule = ogg_granule_to_timestamp(oggstream, oggstream->page.granule);
202  oggstream->page_count++;
203  ogg_reset_cur_page(oggstream);
204 
205  while (*p) {
206  if (ogg_compare_granule(s, &(*p)->page, &l->page))
207  break;
208  p = &(*p)->next;
209  }
210  l->next = *p;
211  *p = l;
212 
213  return 0;
214 }
215 
217  uint8_t *data, unsigned size, int64_t granule,
218  int header)
219 {
220  OGGStreamContext *oggstream = st->priv_data;
221  OGGContext *ogg = s->priv_data;
222  int total_segments = size / 255 + 1;
223  uint8_t *p = data;
224  int i, segments, len, flush = 0;
225 
226  // Handles VFR by flushing page because this frame needs to have a timestamp
227  // For theora and VP8, keyframes also need to have a timestamp to correctly mark
228  // them as such, otherwise seeking will not work correctly at the very
229  // least with old libogg versions.
230  // Do not try to flush header packets though, that will create broken files.
231  if ((st->codecpar->codec_id == AV_CODEC_ID_THEORA || st->codecpar->codec_id == AV_CODEC_ID_VP8) && !header &&
232  (ogg_granule_to_timestamp(oggstream, granule) >
233  ogg_granule_to_timestamp(oggstream, oggstream->last_granule) + 1 ||
234  ogg_key_granule(oggstream, granule))) {
235  if (oggstream->page.granule != -1)
236  ogg_buffer_page(s, oggstream);
237  flush = 1;
238  }
239 
240  // avoid a continued page
241  if (!header && oggstream->page.size > 0 &&
242  MAX_PAGE_SIZE - oggstream->page.size < size) {
243  ogg_buffer_page(s, oggstream);
244  }
245 
246  for (i = 0; i < total_segments; ) {
247  OGGPage *page = &oggstream->page;
248 
249  segments = FFMIN(total_segments - i, 255 - page->segments_count);
250 
251  if (i && !page->segments_count)
252  page->flags |= 1; // continued packet
253 
254  memset(page->segments+page->segments_count, 255, segments - 1);
255  page->segments_count += segments - 1;
256 
257  len = FFMIN(size, segments*255);
258  page->segments[page->segments_count++] = len - (segments-1)*255;
259  memcpy(page->data+page->size, p, len);
260  p += len;
261  size -= len;
262  i += segments;
263  page->size += len;
264 
265  if (i == total_segments)
266  page->granule = granule;
267 
268  {
269  AVStream *st = s->streams[page->stream_index];
270 
271  int64_t start = av_rescale_q(page->start_granule, st->time_base,
273  int64_t next = av_rescale_q(ogg_granule_to_timestamp(oggstream, page->granule),
275 
276  if (page->segments_count == 255) {
277  ogg_buffer_page(s, oggstream);
278  } else if (!header) {
279  if ((ogg->pref_size > 0 && page->size >= ogg->pref_size) ||
280  (ogg->pref_duration > 0 && next - start >= ogg->pref_duration)) {
281  ogg_buffer_page(s, oggstream);
282  }
283  }
284  }
285  }
286 
287  if (flush && oggstream->page.granule != -1)
288  ogg_buffer_page(s, oggstream);
289 
290  return 0;
291 }
292 
293 static uint8_t *ogg_write_vorbiscomment(int64_t offset, int bitexact,
294  int *header_len, AVDictionary **m, int framing_bit)
295 {
296  const char *vendor = bitexact ? "ffmpeg" : LIBAVFORMAT_IDENT;
297  int64_t size;
298  uint8_t *p, *p0;
299 
301 
302  size = offset + ff_vorbiscomment_length(*m, vendor) + framing_bit;
303  if (size > INT_MAX)
304  return NULL;
305  p = av_mallocz(size);
306  if (!p)
307  return NULL;
308  p0 = p;
309 
310  p += offset;
311  ff_vorbiscomment_write(&p, m, vendor);
312  if (framing_bit)
313  bytestream_put_byte(&p, 1);
314 
315  *header_len = size;
316  return p0;
317 }
318 
320  OGGStreamContext *oggstream, int bitexact,
321  AVDictionary **m)
322 {
323  uint8_t *p;
324 
326  return AVERROR(EINVAL);
327 
328  // first packet: STREAMINFO
329  oggstream->header_len[0] = 51;
330  oggstream->header[0] = av_mallocz(51); // per ogg flac specs
331  p = oggstream->header[0];
332  if (!p)
333  return AVERROR(ENOMEM);
334  bytestream_put_byte(&p, 0x7F);
335  bytestream_put_buffer(&p, "FLAC", 4);
336  bytestream_put_byte(&p, 1); // major version
337  bytestream_put_byte(&p, 0); // minor version
338  bytestream_put_be16(&p, 1); // headers packets without this one
339  bytestream_put_buffer(&p, "fLaC", 4);
340  bytestream_put_byte(&p, 0x00); // streaminfo
341  bytestream_put_be24(&p, 34);
343 
344  // second packet: VorbisComment
345  p = ogg_write_vorbiscomment(4, bitexact, &oggstream->header_len[1], m, 0);
346  if (!p)
347  return AVERROR(ENOMEM);
348  oggstream->header[1] = p;
349  bytestream_put_byte(&p, 0x84); // last metadata block and vorbis comment
350  bytestream_put_be24(&p, oggstream->header_len[1] - 4);
351 
352  return 0;
353 }
354 
355 #define SPEEX_HEADER_SIZE 80
356 
358  OGGStreamContext *oggstream, int bitexact,
359  AVDictionary **m)
360 {
361  uint8_t *p;
362 
364  return AVERROR_INVALIDDATA;
365 
366  // first packet: Speex header
368  if (!p)
369  return AVERROR(ENOMEM);
370  oggstream->header[0] = p;
371  oggstream->header_len[0] = SPEEX_HEADER_SIZE;
373  AV_WL32(&oggstream->header[0][68], 0); // set extra_headers to 0
374 
375  // second packet: VorbisComment
376  p = ogg_write_vorbiscomment(0, bitexact, &oggstream->header_len[1], m, 0);
377  if (!p)
378  return AVERROR(ENOMEM);
379  oggstream->header[1] = p;
380 
381  return 0;
382 }
383 
384 #define OPUS_HEADER_SIZE 19
385 
387  OGGStreamContext *oggstream, int bitexact,
388  AVDictionary **m)
389 {
390  uint8_t *p;
391 
392  if (par->extradata_size < OPUS_HEADER_SIZE)
393  return AVERROR_INVALIDDATA;
394 
395  /* first packet: Opus header */
396  p = av_mallocz(par->extradata_size);
397  if (!p)
398  return AVERROR(ENOMEM);
399  oggstream->header[0] = p;
400  oggstream->header_len[0] = par->extradata_size;
402 
403  /* second packet: VorbisComment */
404  p = ogg_write_vorbiscomment(8, bitexact, &oggstream->header_len[1], m, 0);
405  if (!p)
406  return AVERROR(ENOMEM);
407  oggstream->header[1] = p;
408  bytestream_put_buffer(&p, "OpusTags", 8);
409 
410  return 0;
411 }
412 
413 #define VP8_HEADER_SIZE 26
414 
416  OGGStreamContext *oggstream, int bitexact)
417 {
418  AVCodecParameters *par = st->codecpar;
419  uint8_t *p;
420 
421  /* first packet: VP8 header */
423  if (!p)
424  return AVERROR(ENOMEM);
425  oggstream->header[0] = p;
426  oggstream->header_len[0] = VP8_HEADER_SIZE;
427  bytestream_put_byte(&p, 0x4f); // HDRID
428  bytestream_put_buffer(&p, "VP80", 4); // Identifier
429  bytestream_put_byte(&p, 1); // HDRTYP
430  bytestream_put_byte(&p, 1); // VMAJ
431  bytestream_put_byte(&p, 0); // VMIN
432  bytestream_put_be16(&p, par->width);
433  bytestream_put_be16(&p, par->height);
434  bytestream_put_be24(&p, par->sample_aspect_ratio.num);
435  bytestream_put_be24(&p, par->sample_aspect_ratio.den);
436  if (st->r_frame_rate.num > 0 && st->r_frame_rate.den > 0) {
437  // OggVP8 requires pts to increase by 1 per visible frame, so use the least common
438  // multiple framerate if available.
439  av_log(s, AV_LOG_DEBUG, "Changing time base from %d/%d to %d/%d\n",
440  st->time_base.num, st->time_base.den,
441  st->r_frame_rate.den, st->r_frame_rate.num);
443  }
444  bytestream_put_be32(&p, st->time_base.den);
445  bytestream_put_be32(&p, st->time_base.num);
446 
447  /* optional second packet: VorbisComment */
449  p = ogg_write_vorbiscomment(7, bitexact, &oggstream->header_len[1], &st->metadata, 0);
450  if (!p)
451  return AVERROR(ENOMEM);
452  oggstream->header[1] = p;
453  bytestream_put_byte(&p, 0x4f); // HDRID
454  bytestream_put_buffer(&p, "VP80", 4); // Identifier
455  bytestream_put_byte(&p, 2); // HDRTYP
456  bytestream_put_byte(&p, 0x20);
457  }
458 
459  oggstream->isvp8 = 1;
460 
461  return 0;
462 }
463 
465 {
466  OGGContext *ogg = s->priv_data;
467  OGGPageList *next, *p;
468 
469  if (!ogg->page_list)
470  return;
471 
472  for (p = ogg->page_list; p; ) {
473  OGGStreamContext *oggstream =
475  if (oggstream->page_count < 2 && !flush)
476  break;
477  ogg_write_page(s, &p->page,
478  flush == 1 && oggstream->page_count == 1 ? 4 : 0); // eos
479  next = p->next;
480  av_freep(&p);
481  p = next;
482  }
483  ogg->page_list = p;
484 }
485 
487 {
488  OGGContext *ogg = s->priv_data;
489  OGGStreamContext *oggstream = NULL;
490  int i, j;
491 
492  if (ogg->pref_size)
493  av_log(s, AV_LOG_WARNING, "The pagesize option is deprecated\n");
494 
495  for (i = 0; i < s->nb_streams; i++) {
496  AVStream *st = s->streams[i];
497  unsigned serial_num = i + ogg->serial_offset;
498 
499  if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
500  if (st->codecpar->codec_id == AV_CODEC_ID_OPUS)
501  /* Opus requires a fixed 48kHz clock */
502  avpriv_set_pts_info(st, 64, 1, 48000);
503  else
504  avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
505  }
506 
507  if (st->codecpar->codec_id != AV_CODEC_ID_VORBIS &&
513  av_log(s, AV_LOG_ERROR, "Unsupported codec id in stream %d\n", i);
514  return AVERROR(EINVAL);
515  }
516 
517  if ((!st->codecpar->extradata || !st->codecpar->extradata_size) &&
519  av_log(s, AV_LOG_ERROR, "No extradata present\n");
520  return AVERROR_INVALIDDATA;
521  }
522  oggstream = av_mallocz(sizeof(*oggstream));
523  if (!oggstream)
524  return AVERROR(ENOMEM);
525 
526  oggstream->page.stream_index = i;
527 
528  if (!(s->flags & AVFMT_FLAG_BITEXACT))
529  do {
530  serial_num = av_get_random_seed();
531  for (j = 0; j < i; j++) {
532  OGGStreamContext *sc = s->streams[j]->priv_data;
533  if (serial_num == sc->serial_num)
534  break;
535  }
536  } while (j < i);
537  oggstream->serial_num = serial_num;
538 
540 
541  st->priv_data = oggstream;
542  if (st->codecpar->codec_id == AV_CODEC_ID_FLAC) {
543  int err = ogg_build_flac_headers(st->codecpar, oggstream,
545  &st->metadata);
546  if (err) {
547  av_log(s, AV_LOG_ERROR, "Error writing FLAC headers\n");
548  av_freep(&st->priv_data);
549  return err;
550  }
551  } else if (st->codecpar->codec_id == AV_CODEC_ID_SPEEX) {
552  int err = ogg_build_speex_headers(st->codecpar, oggstream,
554  &st->metadata);
555  if (err) {
556  av_log(s, AV_LOG_ERROR, "Error writing Speex headers\n");
557  av_freep(&st->priv_data);
558  return err;
559  }
560  } else if (st->codecpar->codec_id == AV_CODEC_ID_OPUS) {
561  int err = ogg_build_opus_headers(st->codecpar, oggstream,
563  &st->metadata);
564  if (err) {
565  av_log(s, AV_LOG_ERROR, "Error writing Opus headers\n");
566  av_freep(&st->priv_data);
567  return err;
568  }
569  } else if (st->codecpar->codec_id == AV_CODEC_ID_VP8) {
570  int err = ogg_build_vp8_headers(s, st, oggstream,
572  if (err) {
573  av_log(s, AV_LOG_ERROR, "Error writing VP8 headers\n");
574  av_freep(&st->priv_data);
575  return err;
576  }
577  } else {
578  uint8_t *p;
579  const char *cstr = st->codecpar->codec_id == AV_CODEC_ID_VORBIS ? "vorbis" : "theora";
580  int header_type = st->codecpar->codec_id == AV_CODEC_ID_VORBIS ? 3 : 0x81;
581  int framing_bit = st->codecpar->codec_id == AV_CODEC_ID_VORBIS ? 1 : 0;
582 
584  st->codecpar->codec_id == AV_CODEC_ID_VORBIS ? 30 : 42,
585  (const uint8_t**)oggstream->header, oggstream->header_len) < 0) {
586  av_log(s, AV_LOG_ERROR, "Extradata corrupted\n");
587  av_freep(&st->priv_data);
588  return AVERROR_INVALIDDATA;
589  }
590 
592  &oggstream->header_len[1], &st->metadata,
593  framing_bit);
594  oggstream->header[1] = p;
595  if (!p)
596  return AVERROR(ENOMEM);
597 
598  bytestream_put_byte(&p, header_type);
599  bytestream_put_buffer(&p, cstr, 6);
600 
601  if (st->codecpar->codec_id == AV_CODEC_ID_THEORA) {
602  int den = AV_RB32(oggstream->header[0] + 22), num = AV_RB32(oggstream->header[0] + 26);
603  /* Make sure to use time base stored in the Theora stream header to write
604  correct timestamps */
605  if (st->time_base.num != num || st->time_base.den != den) {
606  av_log(s, AV_LOG_DEBUG, "Changing time base from %d/%d to %d/%d\n",
607  st->time_base.num, st->time_base.den, num, den);
608  avpriv_set_pts_info(st, 64, num, den);
609  }
610  /** KFGSHIFT is the width of the less significant section of the granule position
611  The less significant section is the frame count since the last keyframe */
612  oggstream->kfgshift = ((oggstream->header[0][40]&3)<<3)|(oggstream->header[0][41]>>5);
613  oggstream->vrev = oggstream->header[0][9];
614  av_log(s, AV_LOG_DEBUG, "theora kfgshift %d, vrev %d\n",
615  oggstream->kfgshift, oggstream->vrev);
616  }
617  }
618  }
619 
620  for (j = 0; j < s->nb_streams; j++) {
621  OGGStreamContext *oggstream = s->streams[j]->priv_data;
622  ogg_buffer_data(s, s->streams[j], oggstream->header[0],
623  oggstream->header_len[0], 0, 1);
624  oggstream->page.flags |= 2; // bos
625  ogg_buffer_page(s, oggstream);
626  }
627  for (j = 0; j < s->nb_streams; j++) {
628  AVStream *st = s->streams[j];
629  OGGStreamContext *oggstream = st->priv_data;
630  for (i = 1; i < 3; i++) {
631  if (oggstream->header_len[i])
632  ogg_buffer_data(s, st, oggstream->header[i],
633  oggstream->header_len[i], 0, 1);
634  }
635  ogg_buffer_page(s, oggstream);
636  }
637 
638  oggstream->page.start_granule = AV_NOPTS_VALUE;
639 
640  ogg_write_pages(s, 2);
641 
642  return 0;
643 }
644 
646 {
647  AVStream *st = s->streams[pkt->stream_index];
648  OGGStreamContext *oggstream = st->priv_data;
649  int ret;
650  int64_t granule;
651 
652  if (st->codecpar->codec_id == AV_CODEC_ID_THEORA) {
653  int64_t pts = oggstream->vrev < 1 ? pkt->pts : pkt->pts + pkt->duration;
654  int pframe_count;
655  if (pkt->flags & AV_PKT_FLAG_KEY)
656  oggstream->last_kf_pts = pts;
657  pframe_count = pts - oggstream->last_kf_pts;
658  // prevent frame count from overflow if key frame flag is not set
659  if (pframe_count >= (1<<oggstream->kfgshift)) {
660  oggstream->last_kf_pts += pframe_count;
661  pframe_count = 0;
662  }
663  granule = (oggstream->last_kf_pts<<oggstream->kfgshift) | pframe_count;
664  } else if (st->codecpar->codec_id == AV_CODEC_ID_OPUS)
665  granule = pkt->pts + pkt->duration +
667  (AVRational){ 1, st->codecpar->sample_rate },
668  st->time_base);
669  else if (st->codecpar->codec_id == AV_CODEC_ID_VP8) {
670  int64_t pts, invcnt, dist;
671  int visible;
672 
673  visible = (pkt->data[0] >> 4) & 1;
674  pts = pkt->pts + pkt->duration;
675  invcnt = (oggstream->last_granule >> 30) & 3;
676  invcnt = visible ? 3 : (invcnt == 3 ? 0 : invcnt + 1);
677  dist = (pkt->flags & AV_PKT_FLAG_KEY) ? 0 : ((oggstream->last_granule >> 3) & 0x07ffffff) + 1;
678 
679  granule = (pts << 32) | (invcnt << 30) | (dist << 3);
680  } else
681  granule = pkt->pts + pkt->duration;
682 
683  if (oggstream->page.start_granule == AV_NOPTS_VALUE)
684  oggstream->page.start_granule = pkt->pts;
685 
686  ret = ogg_buffer_data(s, st, pkt->data, pkt->size, granule, 0);
687  if (ret < 0)
688  return ret;
689 
690  ogg_write_pages(s, 0);
691 
692  oggstream->last_granule = granule;
693 
694  return 0;
695 }
696 
698 {
699  int i;
700 
701  if (pkt)
702  return ogg_write_packet_internal(s, pkt);
703 
704  for (i = 0; i < s->nb_streams; i++) {
705  OGGStreamContext *oggstream = s->streams[i]->priv_data;
706  if (oggstream->page.segments_count)
707  ogg_buffer_page(s, oggstream);
708  }
709 
710  ogg_write_pages(s, 2);
711  return 1;
712 }
713 
715 {
716  int i;
717 
718  /* flush current page if needed */
719  for (i = 0; i < s->nb_streams; i++) {
720  OGGStreamContext *oggstream = s->streams[i]->priv_data;
721 
722  if (oggstream->page.size > 0)
723  ogg_buffer_page(s, oggstream);
724  }
725 
726  ogg_write_pages(s, 1);
727 
728  for (i = 0; i < s->nb_streams; i++) {
729  AVStream *st = s->streams[i];
730  OGGStreamContext *oggstream = st->priv_data;
731  if (st->codecpar->codec_id == AV_CODEC_ID_FLAC ||
735  av_freep(&oggstream->header[0]);
736  }
737  av_freep(&oggstream->header[1]);
738  av_freep(&st->priv_data);
739  }
740  return 0;
741 }
742 
743 #if CONFIG_OGG_MUXER
744 OGG_CLASS(ogg, Ogg)
745 AVOutputFormat ff_ogg_muxer = {
746  .name = "ogg",
747  .long_name = NULL_IF_CONFIG_SMALL("Ogg"),
748  .mime_type = "application/ogg",
749  .extensions = "ogg"
750 #if !CONFIG_OGV_MUXER
751  ",ogv"
752 #endif
753 #if !CONFIG_SPX_MUXER
754  ",spx"
755 #endif
756 #if !CONFIG_OPUS_MUXER
757  ",opus"
758 #endif
759  ,
760  .priv_data_size = sizeof(OGGContext),
761  .audio_codec = CONFIG_LIBVORBIS_ENCODER ?
763  .video_codec = AV_CODEC_ID_THEORA,
768  .priv_class = &ogg_muxer_class,
769 };
770 #endif
771 
772 #if CONFIG_OGA_MUXER
773 OGG_CLASS(oga, Ogg audio)
774 AVOutputFormat ff_oga_muxer = {
775  .name = "oga",
776  .long_name = NULL_IF_CONFIG_SMALL("Ogg Audio"),
777  .mime_type = "audio/ogg",
778  .extensions = "oga",
779  .priv_data_size = sizeof(OGGContext),
780  .audio_codec = AV_CODEC_ID_FLAC,
785  .priv_class = &oga_muxer_class,
786 };
787 #endif
788 
789 #if CONFIG_OGV_MUXER
790 OGG_CLASS(ogv, Ogg video)
791 AVOutputFormat ff_ogv_muxer = {
792  .name = "ogv",
793  .long_name = NULL_IF_CONFIG_SMALL("Ogg Video"),
794  .mime_type = "video/ogg",
795  .extensions = "ogv",
796  .priv_data_size = sizeof(OGGContext),
797  .audio_codec = CONFIG_LIBVORBIS_ENCODER ?
798  AV_CODEC_ID_VORBIS : AV_CODEC_ID_FLAC,
799  .video_codec = CONFIG_LIBTHEORA_ENCODER ?
805  .priv_class = &ogv_muxer_class,
806 };
807 #endif
808 
809 #if CONFIG_SPX_MUXER
810 OGG_CLASS(spx, Ogg Speex)
811 AVOutputFormat ff_spx_muxer = {
812  .name = "spx",
813  .long_name = NULL_IF_CONFIG_SMALL("Ogg Speex"),
814  .mime_type = "audio/ogg",
815  .extensions = "spx",
816  .priv_data_size = sizeof(OGGContext),
817  .audio_codec = AV_CODEC_ID_SPEEX,
822  .priv_class = &spx_muxer_class,
823 };
824 #endif
825 
826 #if CONFIG_OPUS_MUXER
827 OGG_CLASS(opus, Ogg Opus)
828 AVOutputFormat ff_opus_muxer = {
829  .name = "opus",
830  .long_name = NULL_IF_CONFIG_SMALL("Ogg Opus"),
831  .mime_type = "audio/ogg",
832  .extensions = "opus",
833  .priv_data_size = sizeof(OGGContext),
834  .audio_codec = AV_CODEC_ID_OPUS,
839  .priv_class = &opus_muxer_class,
840 };
841 #endif
int header_len[3]
Definition: oggenc.c:52
static int ogg_write_header(AVFormatContext *s)
Definition: oggenc.c:486
#define NULL
Definition: coverity.c:32
int64_t granule
Definition: oggenc.c:40
int64_t last_granule
last packet granule
Definition: oggenc.c:63
const char * s
Definition: avisynth_c.h:768
Bytestream IO Context.
Definition: avio.h:147
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
int avio_close_dyn_buf(AVIOContext *s, uint8_t **pbuffer)
Return the written size and a pointer to the buffer.
Definition: aviobuf.c:1280
AVOption.
Definition: opt.h:246
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
static void flush(AVCodecContext *avctx)
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
unsigned page_count
number of page buffered
Definition: oggenc.c:60
#define AV_DICT_DONT_OVERWRITE
Don't overwrite existing entries.
Definition: dict.h:79
void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits, unsigned int pts_num, unsigned int pts_den)
Set the time base and wrapping info for a given stream.
Definition: utils.c:4581
AVRational sample_aspect_ratio
Video only.
Definition: avcodec.h:4057
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: avcodec.h:3981
int num
Numerator.
Definition: rational.h:59
int size
Definition: avcodec.h:1602
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:230
int av_dict_copy(AVDictionary **dst, const AVDictionary *src, int flags)
Copy entries from one AVDictionary struct into another.
Definition: dict.c:217
uint8_t data[MAX_PAGE_SIZE]
Definition: oggenc.c:45
OGGPage page
Definition: oggenc.c:67
void * priv_data
Definition: avformat.h:904
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:252
OGGPage page
current page
Definition: oggenc.c:61
static AVPacket pkt
#define AVFMT_ALLOW_FLUSH
Format allows flushing.
Definition: avformat.h:495
int avio_open_dyn_buf(AVIOContext **s)
Open a write only memory stream.
Definition: aviobuf.c:1268
#define AVFMT_TS_NONSTRICT
Format does not require strictly increasing timestamps, but they must still be monotonic.
Definition: avformat.h:496
This struct describes the properties of an encoded stream.
Definition: avcodec.h:3973
#define OPUS_HEADER_SIZE
Definition: oggenc.c:384
int ff_vorbiscomment_write(uint8_t **p, AVDictionary **m, const char *vendor_string)
Write a VorbisComment into a buffer.
Definition: vorbiscomment.c:54
static int ogg_write_page(AVFormatContext *s, OGGPage *page, int extra_flags)
Definition: oggenc.c:111
Format I/O context.
Definition: avformat.h:1338
static void ogg_update_checksum(AVFormatContext *s, AVIOContext *pb, int64_t crc_offset)
Definition: oggenc.c:102
void avio_wl32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:346
uint8_t
int width
Video only.
Definition: avcodec.h:4047
AVOptions.
uint16_t size
Definition: oggenc.c:46
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Definition: avcodec.h:1619
#define MAX_PAGE_SIZE
Definition: oggenc.c:36
uint8_t segments_count
Definition: oggenc.c:43
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_RB32
Definition: bytestream.h:87
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1406
static int ogg_build_speex_headers(AVCodecParameters *par, OGGStreamContext *oggstream, int bitexact, AVDictionary **m)
Definition: oggenc.c:357
int64_t last_kf_pts
Definition: oggenc.c:55
Public header for CRC hash function implementation.
int initial_padding
Audio only.
Definition: avcodec.h:4110
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
int flags
Flags modifying the (de)muxer behaviour.
Definition: avformat.h:1449
uint8_t * data
Definition: avcodec.h:1601
static int flags
Definition: log.c:57
ptrdiff_t size
Definition: opengl_enc.c:101
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:511
static const uint8_t header[24]
Definition: sdr2.c:67
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
Definition: aviobuf.c:204
static av_always_inline void ffio_wfourcc(AVIOContext *pb, const uint8_t *s)
Definition: avio_internal.h:66
Definition: oggenc.c:38
#define AVFMT_FLAG_BITEXACT
When muxing, try to avoid writing any random/volatile data to the output.
Definition: avformat.h:1466
static const AVOption options[]
Definition: oggenc.c:82
#define av_log(a,...)
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
Definition: avcodec.h:1633
static int ogg_build_flac_headers(AVCodecParameters *par, OGGStreamContext *oggstream, int bitexact, AVDictionary **m)
Definition: oggenc.c:319
void avio_wl64(AVIOContext *s, uint64_t val)
Definition: aviobuf.c:434
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
unsigned page_counter
Definition: oggenc.c:50
const AVMetadataConv ff_vorbiscomment_metadata_conv[]
VorbisComment metadata conversion mapping.
Definition: vorbiscomment.c:33
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
AVDictionary * metadata
Metadata that applies to the whole file.
Definition: avformat.h:1554
static int ogg_buffer_data(AVFormatContext *s, AVStream *st, uint8_t *data, unsigned size, int64_t granule, int header)
Definition: oggenc.c:216
static int ogg_build_opus_headers(AVCodecParameters *par, OGGStreamContext *oggstream, int bitexact, AVDictionary **m)
Definition: oggenc.c:386
FLAC (Free Lossless Audio Codec) decoder/demuxer common functions.
int64_t start_granule
Definition: oggenc.c:39
#define AVERROR(e)
Definition: error.h:43
struct OGGPageList * next
Definition: oggenc.c:68
int pref_size
preferred page size (0 => fill all segments)
Definition: oggenc.c:74
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:176
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
enum AVMediaType codec_type
General type of the encoded data.
Definition: avcodec.h:3977
int64_t ff_vorbiscomment_length(AVDictionary *m, const char *vendor_string)
Calculate the length in bytes of a VorbisComment.
Definition: vorbiscomment.c:41
static const uint8_t offset[127][2]
Definition: vf_spp.c:92
uint8_t flags
Definition: oggenc.c:42
static int ogg_reset_cur_page(OGGStreamContext *oggstream)
Definition: oggenc.c:182
static int64_t ogg_granule_to_timestamp(OGGStreamContext *oggstream, int64_t granule)
Definition: oggenc.c:155
int flags
A combination of AV_PKT_FLAG values.
Definition: avcodec.h:1607
int extradata_size
Size of the extradata content in bytes.
Definition: avcodec.h:3999
static int ogg_write_packet_internal(AVFormatContext *s, AVPacket *pkt)
Definition: oggenc.c:645
#define VP8_HEADER_SIZE
Definition: oggenc.c:413
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1394
static int ogg_write_trailer(AVFormatContext *s)
Definition: oggenc.c:714
#define LIBAVFORMAT_IDENT
Definition: version.h:46
void ffio_init_checksum(AVIOContext *s, unsigned long(*update_checksum)(unsigned long c, const uint8_t *p, unsigned int len), unsigned long checksum)
Definition: aviobuf.c:583
int void avio_flush(AVIOContext *s)
Force flushing of buffered data.
Definition: aviobuf.c:224
#define FFMIN(a, b)
Definition: common.h:96
int serial_offset
Definition: oggenc.c:76
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:94
unsigned long ff_crc04C11DB7_update(unsigned long checksum, const uint8_t *buf, unsigned int len)
Definition: aviobuf.c:557
const char * name
Definition: avformat.h:524
static int ogg_compare_granule(AVFormatContext *s, OGGPage *next, OGGPage *page)
Definition: oggenc.c:166
#define FLAC_STREAMINFO_SIZE
Definition: flac.h:34
int avpriv_split_xiph_headers(const uint8_t *extradata, int extradata_size, int first_header_size, const uint8_t *header_start[3], int header_len[3])
Split a single extradata buffer into the three headers that most Xiph codecs use. ...
Definition: xiph.c:24
AVDictionary * metadata
Definition: avformat.h:958
static volatile int checksum
Definition: adler32.c:28
uint8_t * header[3]
Definition: oggenc.c:51
#define SPEEX_HEADER_SIZE
Definition: oggenc.c:355
Stream structure.
Definition: avformat.h:889
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
Definition: avutil.h:254
AVIOContext * pb
I/O context.
Definition: avformat.h:1380
void avio_w8(AVIOContext *s, int b)
Definition: aviobuf.c:182
static int ogg_buffer_page(AVFormatContext *s, OGGStreamContext *oggstream)
Definition: oggenc.c:191
void * buf
Definition: avisynth_c.h:690
int stream_index
Definition: oggenc.c:41
static int ogg_write_packet(AVFormatContext *s, AVPacket *pkt)
Definition: oggenc.c:697
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost)
Definition: ffmpeg.c:650
Describe the class of an AVClass context structure.
Definition: log.h:67
#define OGG_CLASS(flavor, name)
Definition: oggenc.c:94
Rational number (pair of numerator and denominator).
Definition: rational.h:58
unsigned long ffio_get_checksum(AVIOContext *s)
Definition: aviobuf.c:575
static uint8_t * ogg_write_vorbiscomment(int64_t offset, int bitexact, int *header_len, AVDictionary **m, int framing_bit)
Definition: oggenc.c:293
unsigned serial_num
serial number
Definition: oggenc.c:62
#define PARAM
Definition: oggenc.c:80
static int64_t pts
Global timestamp for the audio frames.
OGGPageList * page_list
Definition: oggenc.c:73
int sample_rate
Audio only.
Definition: avcodec.h:4091
Main libavformat public API header.
#define OFFSET(x)
Definition: oggenc.c:79
static int ogg_key_granule(OGGStreamContext *oggstream, int64_t granule)
Definition: oggenc.c:149
int kfgshift
for theora granule
Definition: oggenc.c:54
int den
Denominator.
Definition: rational.h:60
void ff_metadata_conv(AVDictionary **pm, const AVMetadataConv *d_conv, const AVMetadataConv *s_conv)
Definition: metadata.c:26
static av_always_inline void bytestream_put_buffer(uint8_t **b, const uint8_t *src, unsigned int size)
Definition: bytestream.h:368
#define av_free(p)
Definition: oggdec.h:101
int len
void * priv_data
Format private data.
Definition: avformat.h:1366
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:344
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: avcodec.h:3995
void avio_wb32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:354
#define av_freep(p)
void INT64 start
Definition: avisynth_c.h:690
#define AV_DICT_IGNORE_SUFFIX
Return first entry in a dictionary whose first part corresponds to the search key, ignoring the suffix of the found key string.
Definition: dict.h:70
uint8_t segments[255]
Definition: oggenc.c:44
uint32_t av_get_random_seed(void)
Get a seed to use in conjunction with random functions.
Definition: random_seed.c:114
AVCodecParameters * codecpar
Definition: avformat.h:1241
int stream_index
Definition: avcodec.h:1603
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avformat.h:926
int64_t pref_duration
preferred page duration (0 => fill all segments)
Definition: oggenc.c:75
#define AVFMT_TS_NEGATIVE
Format allows muxing negative timestamps.
Definition: avformat.h:501
AVRational r_frame_rate
Real base framerate of the stream.
Definition: avformat.h:1103
static void ogg_write_pages(AVFormatContext *s, int flush)
Definition: oggenc.c:464
This structure stores compressed data.
Definition: avcodec.h:1578
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: avcodec.h:1594
static int ogg_build_vp8_headers(AVFormatContext *s, AVStream *st, OGGStreamContext *oggstream, int bitexact)
Definition: oggenc.c:415
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:242
#define AV_WL32(p, v)
Definition: intreadwrite.h:426