FFmpeg
oggparsevorbis.c
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1 /*
2  * Copyright (C) 2005 Michael Ahlberg, Måns Rullgård
3  *
4  * Permission is hereby granted, free of charge, to any person
5  * obtaining a copy of this software and associated documentation
6  * files (the "Software"), to deal in the Software without
7  * restriction, including without limitation the rights to use, copy,
8  * modify, merge, publish, distribute, sublicense, and/or sell copies
9  * of the Software, and to permit persons to whom the Software is
10  * furnished to do so, subject to the following conditions:
11  *
12  * The above copyright notice and this permission notice shall be
13  * included in all copies or substantial portions of the Software.
14  *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
19  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
20  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
22  * DEALINGS IN THE SOFTWARE.
23  */
24 
25 #include <stdlib.h>
26 
27 #include "libavutil/avstring.h"
28 #include "libavutil/base64.h"
29 #include "libavutil/bswap.h"
30 #include "libavutil/dict.h"
31 
32 #include "libavcodec/bytestream.h"
34 
35 #include "avformat.h"
36 #include "flac_picture.h"
37 #include "internal.h"
38 #include "oggdec.h"
39 #include "vorbiscomment.h"
40 #include "replaygain.h"
41 
43 {
44  int i, cnum, h, m, s, ms, keylen = strlen(key);
45  AVChapter *chapter = NULL;
46 
47  if (keylen < 9 || av_strncasecmp(key, "CHAPTER", 7) || sscanf(key+7, "%03d", &cnum) != 1)
48  return 0;
49 
50  if (keylen <= 10) {
51  if (sscanf(val, "%02d:%02d:%02d.%03d", &h, &m, &s, &ms) < 4)
52  return 0;
53 
54  avpriv_new_chapter(as, cnum, (AVRational) { 1, 1000 },
55  ms + 1000 * (s + 60 * (m + 60 * h)),
57  av_free(val);
58  } else if (!av_strcasecmp(key + keylen - 4, "NAME")) {
59  for (i = 0; i < as->nb_chapters; i++)
60  if (as->chapters[i]->id == cnum) {
61  chapter = as->chapters[i];
62  break;
63  }
64  if (!chapter)
65  return 0;
66 
67  av_dict_set(&chapter->metadata, "title", val, AV_DICT_DONT_STRDUP_VAL);
68  } else
69  return 0;
70 
71  av_free(key);
72  return 1;
73 }
74 
76  const uint8_t *buf, int size)
77 {
78  int updates = ff_vorbis_comment(as, &st->metadata, buf, size, 1);
79 
80  if (updates > 0) {
82  }
83 
84  return updates;
85 }
86 
88  const uint8_t *buf, int size,
89  int parse_picture)
90 {
91  const uint8_t *p = buf;
92  const uint8_t *end = buf + size;
93  int updates = 0;
94  unsigned n;
95  int s;
96 
97  /* must have vendor_length and user_comment_list_length */
98  if (size < 8)
99  return AVERROR_INVALIDDATA;
100 
101  s = bytestream_get_le32(&p);
102 
103  if (end - p - 4 < s || s < 0)
104  return AVERROR_INVALIDDATA;
105 
106  p += s;
107 
108  n = bytestream_get_le32(&p);
109 
110  while (end - p >= 4 && n > 0) {
111  const char *t, *v;
112  int tl, vl;
113 
114  s = bytestream_get_le32(&p);
115 
116  if (end - p < s || s < 0)
117  break;
118 
119  t = p;
120  p += s;
121  n--;
122 
123  v = memchr(t, '=', s);
124  if (!v)
125  continue;
126 
127  tl = v - t;
128  vl = s - tl - 1;
129  v++;
130 
131  if (tl && vl) {
132  char *tt, *ct;
133 
134  tt = av_malloc(tl + 1);
135  ct = av_malloc(vl + 1);
136  if (!tt || !ct) {
137  av_freep(&tt);
138  av_freep(&ct);
139  return AVERROR(ENOMEM);
140  }
141 
142  memcpy(tt, t, tl);
143  tt[tl] = 0;
144 
145  memcpy(ct, v, vl);
146  ct[vl] = 0;
147 
148  /* The format in which the pictures are stored is the FLAC format.
149  * Xiph says: "The binary FLAC picture structure is base64 encoded
150  * and placed within a VorbisComment with the tag name
151  * 'METADATA_BLOCK_PICTURE'. This is the preferred and
152  * recommended way of embedding cover art within VorbisComments."
153  */
154  if (!strcmp(tt, "METADATA_BLOCK_PICTURE") && parse_picture) {
155  int ret, len = AV_BASE64_DECODE_SIZE(vl);
156  char *pict = av_malloc(len);
157 
158  if (!pict) {
159  av_log(as, AV_LOG_WARNING, "out-of-memory error. Skipping cover art block.\n");
160  av_freep(&tt);
161  av_freep(&ct);
162  continue;
163  }
164  ret = av_base64_decode(pict, ct, len);
165  av_freep(&tt);
166  av_freep(&ct);
167  if (ret > 0)
168  ret = ff_flac_parse_picture(as, pict, ret);
169  av_freep(&pict);
170  if (ret < 0) {
171  av_log(as, AV_LOG_WARNING, "Failed to parse cover art block.\n");
172  continue;
173  }
174  } else if (!ogm_chapter(as, tt, ct)) {
175  updates++;
176  if (av_dict_get(*m, tt, NULL, 0)) {
177  av_dict_set(m, tt, ";", AV_DICT_APPEND);
178  }
179  av_dict_set(m, tt, ct,
182  av_freep(&ct);
183  }
184  }
185  }
186 
187  if (p != end)
188  av_log(as, AV_LOG_INFO,
189  "%"PTRDIFF_SPECIFIER" bytes of comment header remain\n", end - p);
190  if (n > 0)
191  av_log(as, AV_LOG_INFO,
192  "truncated comment header, %i comments not found\n", n);
193 
195 
196  return updates;
197 }
198 
199 /*
200  * Parse the vorbis header
201  *
202  * Vorbis Identification header from Vorbis_I_spec.html#vorbis-spec-codec
203  * [vorbis_version] = read 32 bits as unsigned integer | Not used
204  * [audio_channels] = read 8 bit integer as unsigned | Used
205  * [audio_sample_rate] = read 32 bits as unsigned integer | Used
206  * [bitrate_maximum] = read 32 bits as signed integer | Not used yet
207  * [bitrate_nominal] = read 32 bits as signed integer | Not used yet
208  * [bitrate_minimum] = read 32 bits as signed integer | Used as bitrate
209  * [blocksize_0] = read 4 bits as unsigned integer | Not Used
210  * [blocksize_1] = read 4 bits as unsigned integer | Not Used
211  * [framing_flag] = read one bit | Not Used
212  */
213 
215  unsigned int len[3];
216  unsigned char *packet[3];
218  int64_t final_pts;
220 };
221 
223  struct oggvorbis_private *priv,
224  uint8_t **buf)
225 {
226  int i, offset, len, err;
227  int buf_len;
228  unsigned char *ptr;
229 
230  len = priv->len[0] + priv->len[1] + priv->len[2];
231  buf_len = len + len / 255 + 64;
232 
233  if (*buf)
234  return AVERROR_INVALIDDATA;
235 
236  ptr = *buf = av_realloc(NULL, buf_len);
237  if (!ptr)
238  return AVERROR(ENOMEM);
239  memset(*buf, '\0', buf_len);
240 
241  ptr[0] = 2;
242  offset = 1;
243  offset += av_xiphlacing(&ptr[offset], priv->len[0]);
244  offset += av_xiphlacing(&ptr[offset], priv->len[1]);
245  for (i = 0; i < 3; i++) {
246  memcpy(&ptr[offset], priv->packet[i], priv->len[i]);
247  offset += priv->len[i];
248  av_freep(&priv->packet[i]);
249  }
251  return err;
252  return offset;
253 }
254 
255 static void vorbis_cleanup(AVFormatContext *s, int idx)
256 {
257  struct ogg *ogg = s->priv_data;
258  struct ogg_stream *os = ogg->streams + idx;
259  struct oggvorbis_private *priv = os->private;
260  int i;
261  if (os->private) {
262  av_vorbis_parse_free(&priv->vp);
263  for (i = 0; i < 3; i++)
264  av_freep(&priv->packet[i]);
265  }
266 }
267 
269 {
270  struct ogg *ogg = s->priv_data;
271  struct ogg_stream *os = ogg->streams + idx;
272  AVStream *st = s->streams[idx];
273  int ret;
274 
275  if (os->psize <= 8)
276  return 0;
277 
278  /* New metadata packet; release old data. */
279  av_dict_free(&st->metadata);
280  ret = ff_vorbis_stream_comment(s, st, os->buf + os->pstart + 7,
281  os->psize - 8);
282  if (ret < 0)
283  return ret;
284 
285  /* Update the metadata if possible. */
286  av_freep(&os->new_metadata);
287  if (st->metadata) {
289  /* Send an empty dictionary to indicate that metadata has been cleared. */
290  } else {
291  os->new_metadata = av_malloc(1);
292  os->new_metadata_size = 0;
293  }
294 
295  return ret;
296 }
297 
298 static int vorbis_header(AVFormatContext *s, int idx)
299 {
300  struct ogg *ogg = s->priv_data;
301  AVStream *st = s->streams[idx];
302  struct ogg_stream *os = ogg->streams + idx;
303  struct oggvorbis_private *priv;
304  int pkt_type = os->buf[os->pstart];
305 
306  if (!os->private) {
307  os->private = av_mallocz(sizeof(struct oggvorbis_private));
308  if (!os->private)
309  return AVERROR(ENOMEM);
310  }
311 
312  priv = os->private;
313 
314  if (!(pkt_type & 1))
315  return priv->vp ? 0 : AVERROR_INVALIDDATA;
316 
317  if (os->psize < 1 || pkt_type > 5)
318  return AVERROR_INVALIDDATA;
319 
320  if (priv->packet[pkt_type >> 1])
321  return AVERROR_INVALIDDATA;
322  if (pkt_type > 1 && !priv->packet[0] || pkt_type > 3 && !priv->packet[1])
323  return priv->vp ? 0 : AVERROR_INVALIDDATA;
324 
325  priv->len[pkt_type >> 1] = os->psize;
326  priv->packet[pkt_type >> 1] = av_mallocz(os->psize);
327  if (!priv->packet[pkt_type >> 1])
328  return AVERROR(ENOMEM);
329  memcpy(priv->packet[pkt_type >> 1], os->buf + os->pstart, os->psize);
330  if (os->buf[os->pstart] == 1) {
331  const uint8_t *p = os->buf + os->pstart + 7; /* skip "\001vorbis" tag */
332  unsigned blocksize, bs0, bs1;
333  int srate;
334  int channels;
335 
336  if (os->psize != 30)
337  return AVERROR_INVALIDDATA;
338 
339  if (bytestream_get_le32(&p) != 0) /* vorbis_version */
340  return AVERROR_INVALIDDATA;
341 
342  channels = bytestream_get_byte(&p);
343  if (st->codecpar->channels && channels != st->codecpar->channels) {
344  av_log(s, AV_LOG_ERROR, "Channel change is not supported\n");
345  return AVERROR_PATCHWELCOME;
346  }
347  st->codecpar->channels = channels;
348  srate = bytestream_get_le32(&p);
349  p += 4; // skip maximum bitrate
350  st->codecpar->bit_rate = bytestream_get_le32(&p); // nominal bitrate
351  p += 4; // skip minimum bitrate
352 
353  blocksize = bytestream_get_byte(&p);
354  bs0 = blocksize & 15;
355  bs1 = blocksize >> 4;
356 
357  if (bs0 > bs1)
358  return AVERROR_INVALIDDATA;
359  if (bs0 < 6 || bs1 > 13)
360  return AVERROR_INVALIDDATA;
361 
362  if (bytestream_get_byte(&p) != 1) /* framing_flag */
363  return AVERROR_INVALIDDATA;
364 
367 
368  if (srate > 0) {
369  st->codecpar->sample_rate = srate;
370  avpriv_set_pts_info(st, 64, 1, srate);
371  }
372  } else if (os->buf[os->pstart] == 3) {
373  if (vorbis_update_metadata(s, idx) >= 0 && priv->len[1] > 10) {
374  unsigned new_len;
375 
376  int ret = ff_replaygain_export(st, st->metadata);
377  if (ret < 0)
378  return ret;
379 
380  // drop all metadata we parsed and which is not required by libvorbis
381  new_len = 7 + 4 + AV_RL32(priv->packet[1] + 7) + 4 + 1;
382  if (new_len >= 16 && new_len < os->psize) {
383  AV_WL32(priv->packet[1] + new_len - 5, 0);
384  priv->packet[1][new_len - 1] = 1;
385  priv->len[1] = new_len;
386  }
387  }
388  } else {
389  int ret;
390 
391  if (priv->vp)
392  return AVERROR_INVALIDDATA;
393 
394  ret = fixup_vorbis_headers(s, priv, &st->codecpar->extradata);
395  if (ret < 0) {
396  st->codecpar->extradata_size = 0;
397  return ret;
398  }
399  st->codecpar->extradata_size = ret;
400 
402  if (!priv->vp) {
403  av_freep(&st->codecpar->extradata);
404  st->codecpar->extradata_size = 0;
405  return AVERROR_UNKNOWN;
406  }
407  }
408 
409  return 1;
410 }
411 
412 static int vorbis_packet(AVFormatContext *s, int idx)
413 {
414  struct ogg *ogg = s->priv_data;
415  struct ogg_stream *os = ogg->streams + idx;
416  struct oggvorbis_private *priv = os->private;
417  int duration, flags = 0;
418 
419  if (!priv->vp)
420  return AVERROR_INVALIDDATA;
421 
422  /* first packet handling
423  * here we parse the duration of each packet in the first page and compare
424  * the total duration to the page granule to find the encoder delay and
425  * set the first timestamp */
426  if ((!os->lastpts || os->lastpts == AV_NOPTS_VALUE) && !(os->flags & OGG_FLAG_EOS) && (int64_t)os->granule>=0) {
427  int seg, d;
428  uint8_t *last_pkt = os->buf + os->pstart;
429  uint8_t *next_pkt = last_pkt;
430 
431  av_vorbis_parse_reset(priv->vp);
432  duration = 0;
433  seg = os->segp;
434  d = av_vorbis_parse_frame_flags(priv->vp, last_pkt, 1, &flags);
435  if (d < 0) {
437  return 0;
438  } else if (flags & VORBIS_FLAG_COMMENT) {
440  flags = 0;
441  }
442  duration += d;
443  last_pkt = next_pkt = next_pkt + os->psize;
444  for (; seg < os->nsegs; seg++) {
445  if (os->segments[seg] < 255) {
446  int d = av_vorbis_parse_frame_flags(priv->vp, last_pkt, 1, &flags);
447  if (d < 0) {
448  duration = os->granule;
449  break;
450  } else if (flags & VORBIS_FLAG_COMMENT) {
452  flags = 0;
453  }
454  duration += d;
455  last_pkt = next_pkt + os->segments[seg];
456  }
457  next_pkt += os->segments[seg];
458  }
459  os->lastpts =
460  os->lastdts = os->granule - duration;
461 
462  if (!os->granule && duration) //hack to deal with broken files (Ticket3710)
463  os->lastpts = os->lastdts = AV_NOPTS_VALUE;
464 
465  if (s->streams[idx]->start_time == AV_NOPTS_VALUE) {
466  s->streams[idx]->start_time = FFMAX(os->lastpts, 0);
467  if (s->streams[idx]->duration != AV_NOPTS_VALUE)
468  s->streams[idx]->duration -= s->streams[idx]->start_time;
469  }
470  priv->final_pts = AV_NOPTS_VALUE;
471  av_vorbis_parse_reset(priv->vp);
472  }
473 
474  /* parse packet duration */
475  if (os->psize > 0) {
476  duration = av_vorbis_parse_frame_flags(priv->vp, os->buf + os->pstart, 1, &flags);
477  if (duration < 0) {
479  return 0;
480  } else if (flags & VORBIS_FLAG_COMMENT) {
482  flags = 0;
483  }
484  os->pduration = duration;
485  }
486 
487  /* final packet handling
488  * here we save the pts of the first packet in the final page, sum up all
489  * packet durations in the final page except for the last one, and compare
490  * to the page granule to find the duration of the final packet */
491  if (os->flags & OGG_FLAG_EOS) {
492  if (os->lastpts != AV_NOPTS_VALUE) {
493  priv->final_pts = os->lastpts;
494  priv->final_duration = 0;
495  }
496  if (os->segp == os->nsegs)
497  os->pduration = os->granule - priv->final_pts - priv->final_duration;
498  priv->final_duration += os->pduration;
499  }
500 
501  return 0;
502 }
503 
504 const struct ogg_codec ff_vorbis_codec = {
505  .magic = "\001vorbis",
506  .magicsize = 7,
507  .header = vorbis_header,
508  .packet = vorbis_packet,
509  .cleanup = vorbis_cleanup,
510  .nb_header = 3,
511 };
AVChapter::id
int id
unique ID to identify the chapter
Definition: avformat.h:1300
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
AVCodecParameters::extradata
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: avcodec.h:3971
ogg_stream::segp
int segp
Definition: oggdec.h:79
av_vorbis_parse_free
void av_vorbis_parse_free(AVVorbisParseContext **s)
Free the parser and everything associated with it.
Definition: vorbis_parser.c:276
AVChapter::metadata
AVDictionary * metadata
Definition: avformat.h:1303
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
av_xiphlacing
unsigned int av_xiphlacing(unsigned char *s, unsigned int v)
Encode extradata length to a buffer.
Definition: utils.c:1803
ogg_stream::lastpts
int64_t lastpts
Definition: oggdec.h:72
AVCodecParameters::codec_type
enum AVMediaType codec_type
General type of the encoded data.
Definition: avcodec.h:3953
AV_WL32
#define AV_WL32(p, v)
Definition: intreadwrite.h:426
AVVorbisParseContext
Definition: vorbis_parser_internal.h:34
AVFormatContext::nb_chapters
unsigned int nb_chapters
Number of chapters in AVChapter array.
Definition: avformat.h:1571
n
int n
Definition: avisynth_c.h:760
ff_replaygain_export
int ff_replaygain_export(AVStream *st, AVDictionary *metadata)
Parse replaygain tags and export them as per-stream side data.
Definition: replaygain.c:91
av_vorbis_parse_frame_flags
int av_vorbis_parse_frame_flags(AVVorbisParseContext *s, const uint8_t *buf, int buf_size, int *flags)
Get the duration for a Vorbis packet.
Definition: vorbis_parser.c:213
ogm_chapter
static int ogm_chapter(AVFormatContext *as, uint8_t *key, uint8_t *val)
Definition: oggparsevorbis.c:42
av_strcasecmp
int av_strcasecmp(const char *a, const char *b)
Locale-independent case-insensitive compare.
Definition: avstring.c:213
end
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
ff_vorbis_stream_comment
int ff_vorbis_stream_comment(AVFormatContext *as, AVStream *st, const uint8_t *buf, int size)
Definition: oggparsevorbis.c:75
vorbiscomment.h
ogg_stream::granule
uint64_t granule
Definition: oggdec.h:70
AV_DICT_APPEND
#define AV_DICT_APPEND
If the entry already exists, append to it.
Definition: dict.h:77
channels
channels
Definition: aptx.c:30
AVDictionary
Definition: dict.c:30
ogg_stream::buf
uint8_t * buf
Definition: oggdec.h:62
ogg_stream::nsegs
int nsegs
Definition: oggdec.h:79
AVERROR_UNKNOWN
#define AVERROR_UNKNOWN
Unknown error, typically from an external library.
Definition: error.h:71
ogg
Definition: oggdec.h:101
av_malloc
#define av_malloc(s)
Definition: tableprint_vlc.h:31
AVCodecParameters::channels
int channels
Audio only.
Definition: avcodec.h:4063
AV_BASE64_DECODE_SIZE
#define AV_BASE64_DECODE_SIZE(x)
Calculate the output size in bytes needed to decode a base64 string with length x to a data buffer.
Definition: base64.h:48
ogg_stream::lastdts
int64_t lastdts
Definition: oggdec.h:73
av_packet_pack_dictionary
uint8_t * av_packet_pack_dictionary(AVDictionary *dict, int *size)
Pack a dictionary for use in side_data.
Definition: avpacket.c:488
AVChapter
Definition: avformat.h:1299
ff_vorbis_comment
int ff_vorbis_comment(AVFormatContext *as, AVDictionary **m, const uint8_t *buf, int size, int parse_picture)
Definition: oggparsevorbis.c:87
AV_DICT_DONT_STRDUP_VAL
#define AV_DICT_DONT_STRDUP_VAL
Take ownership of a value that's been allocated with av_malloc() or another memory allocation functio...
Definition: dict.h:74
ogg_stream::pstart
unsigned int pstart
Definition: oggdec.h:65
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
buf
void * buf
Definition: avisynth_c.h:766
AV_PKT_FLAG_CORRUPT
#define AV_PKT_FLAG_CORRUPT
The packet content is corrupted.
Definition: avcodec.h:1510
duration
int64_t duration
Definition: movenc.c:63
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
s
#define s(width, name)
Definition: cbs_vp9.c:257
AVFormatContext::chapters
AVChapter ** chapters
Definition: avformat.h:1572
AVMEDIA_TYPE_AUDIO
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
VORBIS_FLAG_COMMENT
#define VORBIS_FLAG_COMMENT
Definition: vorbis_parser.h:45
ff_vorbis_codec
const struct ogg_codec ff_vorbis_codec
Definition: oggparsevorbis.c:504
flac_picture.h
oggvorbis_private::final_duration
int final_duration
Definition: oggparsevorbis.c:219
oggvorbis_private::packet
unsigned char * packet[3]
Definition: oggparsevorbis.c:216
ogg_stream::new_metadata
uint8_t * new_metadata
Definition: oggdec.h:88
oggvorbis_private::len
unsigned int len[3]
Definition: oggparsevorbis.c:215
ff_vorbiscomment_metadata_conv
const AVMetadataConv ff_vorbiscomment_metadata_conv[]
VorbisComment metadata conversion mapping.
Definition: vorbiscomment.c:33
key
const char * key
Definition: hwcontext_opencl.c:168
AVFormatContext
Format I/O context.
Definition: avformat.h:1342
internal.h
AVStream::codecpar
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1017
oggvorbis_private
Definition: oggparsevorbis.c:214
PTRDIFF_SPECIFIER
#define PTRDIFF_SPECIFIER
Definition: internal.h:263
NULL
#define NULL
Definition: coverity.c:32
AVERROR_PATCHWELCOME
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
Definition: error.h:62
AVRational
Rational number (pair of numerator and denominator).
Definition: rational.h:58
ogg_stream::flags
int flags
Definition: oggdec.h:76
AVStream::metadata
AVDictionary * metadata
Definition: avformat.h:934
vorbis_parser.h
av_base64_decode
int av_base64_decode(uint8_t *out, const char *in_str, int out_size)
Decode a base64-encoded string.
Definition: base64.c:79
base64.h
ogg::streams
struct ogg_stream * streams
Definition: oggdec.h:102
AVSTREAM_EVENT_FLAG_METADATA_UPDATED
#define AVSTREAM_EVENT_FLAG_METADATA_UPDATED
The call resulted in updated metadata.
Definition: avformat.h:984
AVCodecParameters::sample_rate
int sample_rate
Audio only.
Definition: avcodec.h:4067
AVCodecParameters::extradata_size
int extradata_size
Size of the extradata content in bytes.
Definition: avcodec.h:3975
vorbis_cleanup
static void vorbis_cleanup(AVFormatContext *s, int idx)
Definition: oggparsevorbis.c:255
av_strncasecmp
int av_strncasecmp(const char *a, const char *b, size_t n)
Locale-independent case-insensitive compare.
Definition: avstring.c:223
FFMAX
#define FFMAX(a, b)
Definition: common.h:94
avpriv_set_pts_info
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:4910
ogg_stream::private
void * private
Definition: oggdec.h:90
size
int size
Definition: twinvq_data.h:11134
av_reallocp
int av_reallocp(void *ptr, size_t size)
Allocate, reallocate, or free a block of memory through a pointer to a pointer.
Definition: mem.c:163
AV_NOPTS_VALUE
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
AVStream::event_flags
int event_flags
Flags for the user to detect events happening on the stream.
Definition: avformat.h:983
ff_flac_parse_picture
int ff_flac_parse_picture(AVFormatContext *s, uint8_t *buf, int buf_size)
Definition: flac_picture.c:30
val
const char const char void * val
Definition: avisynth_c.h:863
ogg_stream::new_metadata_size
unsigned int new_metadata_size
Definition: oggdec.h:89
offset
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 offset
Definition: writing_filters.txt:86
av_dict_free
void av_dict_free(AVDictionary **pm)
Free all the memory allocated for an AVDictionary struct and all keys and values.
Definition: dict.c:203
oggvorbis_private::final_pts
int64_t final_pts
Definition: oggparsevorbis.c:218
AV_LOG_INFO
#define AV_LOG_INFO
Standard information.
Definition: log.h:187
vorbis_update_metadata
static int vorbis_update_metadata(AVFormatContext *s, int idx)
Definition: oggparsevorbis.c:268
av_realloc
void * av_realloc(void *ptr, size_t size)
Allocate, reallocate, or free a block of memory.
Definition: mem.c:135
ogg_stream::pflags
unsigned int pflags
Definition: oggdec.h:67
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:259
ogg_stream
Definition: oggdec.h:61
avpriv_new_chapter
AVChapter * avpriv_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title)
Add a new chapter.
Definition: utils.c:4608
vorbis_header
static int vorbis_header(AVFormatContext *s, int idx)
Definition: oggparsevorbis.c:298
ff_metadata_conv
void ff_metadata_conv(AVDictionary **pm, const AVMetadataConv *d_conv, const AVMetadataConv *s_conv)
Definition: metadata.c:26
vorbis_packet
static int vorbis_packet(AVFormatContext *s, int idx)
Definition: oggparsevorbis.c:412
uint8_t
uint8_t
Definition: audio_convert.c:194
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:236
len
int len
Definition: vorbis_enc_data.h:452
oggvorbis_private::vp
AVVorbisParseContext * vp
Definition: oggparsevorbis.c:217
ret
ret
Definition: filter_design.txt:187
AVStream
Stream structure.
Definition: avformat.h:870
bswap.h
av_vorbis_parse_init
AVVorbisParseContext * av_vorbis_parse_init(const uint8_t *extradata, int extradata_size)
Allocate and initialize the Vorbis parser using headers in the extradata.
Definition: vorbis_parser.c:281
avformat.h
dict.h
AV_INPUT_BUFFER_PADDING_SIZE
#define AV_INPUT_BUFFER_PADDING_SIZE
Definition: avcodec.h:790
AV_RL32
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
Definition: bytestream.h:88
oggdec.h
ogg_stream::segments
uint8_t segments[255]
Definition: oggdec.h:80
OGG_FLAG_EOS
#define OGG_FLAG_EOS
Definition: oggdec.h:112
av_vorbis_parse_reset
void av_vorbis_parse_reset(AVVorbisParseContext *s)
Definition: vorbis_parser.c:270
av_free
#define av_free(p)
Definition: tableprint_vlc.h:34
AVCodecParameters::codec_id
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: avcodec.h:3957
av_freep
#define av_freep(p)
Definition: tableprint_vlc.h:35
av_dict_set
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:70
ogg_stream::psize
unsigned int psize
Definition: oggdec.h:66
ogg_codec
Copyright (C) 2005 Michael Ahlberg, Måns Rullgård.
Definition: oggdec.h:31
bytestream.h
replaygain.h
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:565
AVCodecParameters::bit_rate
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
Definition: avcodec.h:3986
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
AVERROR_INVALIDDATA
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
h
h
Definition: vp9dsp_template.c:2038
AV_CODEC_ID_VORBIS
@ AV_CODEC_ID_VORBIS
Definition: avcodec.h:569
ogg_codec::magic
const int8_t * magic
Definition: oggdec.h:32
avstring.h
ogg_stream::pduration
unsigned int pduration
Definition: oggdec.h:68
AV_DICT_DONT_STRDUP_KEY
#define AV_DICT_DONT_STRDUP_KEY
Take ownership of a key that's been allocated with av_malloc() or another memory allocation function.
Definition: dict.h:72
fixup_vorbis_headers
static int fixup_vorbis_headers(AVFormatContext *as, struct oggvorbis_private *priv, uint8_t **buf)
Definition: oggparsevorbis.c:222