FFmpeg
flacdec.c
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1 /*
2  * Raw FLAC demuxer
3  * Copyright (c) 2001 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 "libavcodec/flac.h"
23 #include "avformat.h"
24 #include "flac_picture.h"
25 #include "internal.h"
26 #include "rawdec.h"
27 #include "oggdec.h"
28 #include "vorbiscomment.h"
29 #include "replaygain.h"
30 
31 #define SEEKPOINT_SIZE 18
32 
33 typedef struct FLACDecContext {
37 
38 static void reset_index_position(int64_t metadata_head_size, AVStream *st)
39 {
40  /* the real seek index offset should be the size of metadata blocks with the offset in the frame blocks */
41  int i;
42  for(i=0; i<st->internal->nb_index_entries; i++) {
43  st->internal->index_entries[i].pos += metadata_head_size;
44  }
45 }
46 
48 {
49  int ret, metadata_last=0, metadata_type, metadata_size, found_streaminfo=0;
50  uint8_t header[4];
51  uint8_t *buffer=NULL;
52  FLACDecContext *flac = s->priv_data;
54  if (!st)
55  return AVERROR(ENOMEM);
59  /* the parameters will be extracted from the compressed bitstream */
60 
61  /* if fLaC marker is not found, assume there is no header */
62  if (avio_rl32(s->pb) != MKTAG('f','L','a','C')) {
63  avio_seek(s->pb, -4, SEEK_CUR);
64  return 0;
65  }
66 
67  /* process metadata blocks */
68  while (!avio_feof(s->pb) && !metadata_last) {
69  if (avio_read(s->pb, header, 4) != 4)
71  flac_parse_block_header(header, &metadata_last, &metadata_type,
72  &metadata_size);
73  switch (metadata_type) {
74  /* allocate and read metadata block for supported types */
81  if (!buffer) {
82  return AVERROR(ENOMEM);
83  }
84  if (avio_read(s->pb, buffer, metadata_size) != metadata_size) {
85  RETURN_ERROR(AVERROR(EIO));
86  }
87  break;
88  /* skip metadata block for unsupported types */
89  default:
90  ret = avio_skip(s->pb, metadata_size);
91  if (ret < 0)
92  return ret;
93  }
94 
95  if (metadata_type == FLAC_METADATA_TYPE_STREAMINFO) {
96  uint32_t samplerate;
97  uint64_t samples;
98 
99  /* STREAMINFO can only occur once */
100  if (found_streaminfo) {
102  }
103  if (metadata_size != FLAC_STREAMINFO_SIZE) {
105  }
106  found_streaminfo = 1;
107  st->codecpar->extradata = buffer;
108  st->codecpar->extradata_size = metadata_size;
109  buffer = NULL;
110 
111  /* get sample rate and sample count from STREAMINFO header;
112  * other parameters will be extracted by the parser */
113  samplerate = AV_RB24(st->codecpar->extradata + 10) >> 4;
114  samples = (AV_RB64(st->codecpar->extradata + 13) >> 24) & ((1ULL << 36) - 1);
115 
116  /* set time base and duration */
117  if (samplerate > 0) {
118  avpriv_set_pts_info(st, 64, 1, samplerate);
119  if (samples > 0)
120  st->duration = samples;
121  }
122  } else if (metadata_type == FLAC_METADATA_TYPE_CUESHEET) {
123  uint8_t isrc[13];
124  uint64_t start;
125  const uint8_t *offset;
126  int i, chapters, track, ti;
127  if (metadata_size < 431)
129  offset = buffer + 395;
130  chapters = bytestream_get_byte(&offset) - 1;
131  if (chapters <= 0)
133  for (i = 0; i < chapters; i++) {
134  if (offset + 36 - buffer > metadata_size)
136  start = bytestream_get_be64(&offset);
137  track = bytestream_get_byte(&offset);
138  bytestream_get_buffer(&offset, isrc, 12);
139  isrc[12] = 0;
140  offset += 14;
141  ti = bytestream_get_byte(&offset);
142  if (ti <= 0) RETURN_ERROR(AVERROR_INVALIDDATA);
143  offset += ti * 12;
144  avpriv_new_chapter(s, track, st->time_base, start, AV_NOPTS_VALUE, isrc);
145  }
146  av_freep(&buffer);
147  } else if (metadata_type == FLAC_METADATA_TYPE_PICTURE) {
148  ret = ff_flac_parse_picture(s, buffer, metadata_size, 1);
149  av_freep(&buffer);
150  if (ret < 0) {
151  av_log(s, AV_LOG_ERROR, "Error parsing attached picture.\n");
152  return ret;
153  }
154  } else if (metadata_type == FLAC_METADATA_TYPE_SEEKTABLE) {
155  const uint8_t *seekpoint = buffer;
156  int i, seek_point_count = metadata_size/SEEKPOINT_SIZE;
157  flac->found_seektable = 1;
158  if ((s->flags&AVFMT_FLAG_FAST_SEEK)) {
159  for(i=0; i<seek_point_count; i++) {
160  int64_t timestamp = bytestream_get_be64(&seekpoint);
161  int64_t pos = bytestream_get_be64(&seekpoint);
162  /* skip number of samples */
163  bytestream_get_be16(&seekpoint);
164  av_add_index_entry(st, pos, timestamp, 0, 0, AVINDEX_KEYFRAME);
165  }
166  }
167  av_freep(&buffer);
168  }
169  else {
170 
171  /* STREAMINFO must be the first block */
172  if (!found_streaminfo) {
174  }
175  /* process supported blocks other than STREAMINFO */
176  if (metadata_type == FLAC_METADATA_TYPE_VORBIS_COMMENT) {
177  AVDictionaryEntry *chmask;
178 
179  ret = ff_vorbis_comment(s, &s->metadata, buffer, metadata_size, 1);
180  if (ret < 0) {
181  av_log(s, AV_LOG_WARNING, "error parsing VorbisComment metadata\n");
182  } else if (ret > 0) {
183  s->event_flags |= AVFMT_EVENT_FLAG_METADATA_UPDATED;
184  }
185 
186  /* parse the channels mask if present */
187  chmask = av_dict_get(s->metadata, "WAVEFORMATEXTENSIBLE_CHANNEL_MASK", NULL, 0);
188  if (chmask) {
189  uint64_t mask = strtol(chmask->value, NULL, 0);
190  if (!mask || mask & ~0x3ffffULL) {
192  "Invalid value of WAVEFORMATEXTENSIBLE_CHANNEL_MASK\n");
193  } else {
195  av_dict_set(&s->metadata, "WAVEFORMATEXTENSIBLE_CHANNEL_MASK", NULL, 0);
196  }
197  }
198  }
199  av_freep(&buffer);
200  }
201  }
202 
203  ret = ff_replaygain_export(st, s->metadata);
204  if (ret < 0)
205  return ret;
206 
207  reset_index_position(avio_tell(s->pb), st);
208  return 0;
209 
210 fail:
211  av_free(buffer);
212  return ret;
213 }
214 
215 static int raw_flac_probe(const AVProbeData *p)
216 {
217  if ((p->buf[2] & 0xF0) == 0) // blocksize code invalid
218  return 0;
219  if ((p->buf[2] & 0x0F) == 0x0F) // sample rate code invalid
220  return 0;
221  if ((p->buf[3] & 0xF0) >= FLAC_MAX_CHANNELS + FLAC_CHMODE_MID_SIDE << 4)
222  // channel mode invalid
223  return 0;
224  if ((p->buf[3] & 0x06) == 0x06) // bits per sample code invalid
225  return 0;
226  if ((p->buf[3] & 0x01) == 0x01) // reserved bit set
227  return 0;
228  return AVPROBE_SCORE_EXTENSION / 4 + 1;
229 }
230 
231 static int flac_probe(const AVProbeData *p)
232 {
233  if ((AV_RB16(p->buf) & 0xFFFE) == 0xFFF8)
234  return raw_flac_probe(p);
235 
236  /* file header + metadata header + checked bytes of streaminfo */
237  if (p->buf_size >= 4 + 4 + 13) {
238  int type = p->buf[4] & 0x7f;
239  int size = AV_RB24(p->buf + 5);
240  int min_block_size = AV_RB16(p->buf + 8);
241  int max_block_size = AV_RB16(p->buf + 10);
242  int sample_rate = AV_RB24(p->buf + 18) >> 4;
243 
244  if (memcmp(p->buf, "fLaC", 4))
245  return 0;
248  min_block_size >= 16 &&
249  max_block_size >= min_block_size &&
250  sample_rate && sample_rate <= 655350)
251  return AVPROBE_SCORE_MAX;
253  }
254 
255  return 0;
256 }
257 
258 static av_unused int64_t flac_read_timestamp(AVFormatContext *s, int stream_index,
259  int64_t *ppos, int64_t pos_limit)
260 {
261  AVPacket *pkt = s->internal->parse_pkt;
262  AVStream *st = s->streams[stream_index];
263  AVCodecParserContext *parser;
264  int ret;
265  int64_t pts = AV_NOPTS_VALUE;
266 
267  if (avio_seek(s->pb, *ppos, SEEK_SET) < 0)
268  return AV_NOPTS_VALUE;
269 
270  parser = av_parser_init(st->codecpar->codec_id);
271  if (!parser){
272  return AV_NOPTS_VALUE;
273  }
274  parser->flags |= PARSER_FLAG_USE_CODEC_TS;
275 
276  for (;;){
277  uint8_t *data;
278  int size;
279 
281  if (ret < 0){
282  if (ret == AVERROR(EAGAIN))
283  continue;
284  else {
286  av_assert1(!pkt->size);
287  }
288  }
289  av_parser_parse2(parser, st->internal->avctx,
290  &data, &size, pkt->data, pkt->size,
291  pkt->pts, pkt->dts, *ppos);
292 
294  if (size) {
295  if (parser->pts != AV_NOPTS_VALUE){
296  // seeking may not have started from beginning of a frame
297  // calculate frame start position from next frame backwards
298  *ppos = parser->next_frame_offset - size;
299  pts = parser->pts;
300  break;
301  }
302  } else if (ret < 0)
303  break;
304  }
305  av_parser_close(parser);
306  return pts;
307 }
308 
309 static int flac_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags) {
310  int index;
311  int64_t pos;
312  AVIndexEntry e;
313  FLACDecContext *flac = s->priv_data;
314 
315  if (!flac->found_seektable || !(s->flags&AVFMT_FLAG_FAST_SEEK)) {
316  return -1;
317  }
318 
319  index = av_index_search_timestamp(s->streams[0], timestamp, flags);
320  if(index<0 || index >= s->streams[0]->internal->nb_index_entries)
321  return -1;
322 
323  e = s->streams[0]->internal->index_entries[index];
324  pos = avio_seek(s->pb, e.pos, SEEK_SET);
325  if (pos >= 0) {
326  return 0;
327  }
328  return -1;
329 }
330 
332  .name = "flac",
333  .long_name = NULL_IF_CONFIG_SMALL("raw FLAC"),
334  .read_probe = flac_probe,
335  .read_header = flac_read_header,
336  .read_packet = ff_raw_read_partial_packet,
337  .read_seek = flac_seek,
338  .read_timestamp = flac_read_timestamp,
339  .flags = AVFMT_GENERIC_INDEX,
340  .extensions = "flac",
341  .raw_codec_id = AV_CODEC_ID_FLAC,
342  .priv_data_size = sizeof(FLACDecContext),
343  .priv_class = &ff_raw_demuxer_class,
344 };
av_packet_unref
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:417
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:186
AVCodecParameters::extradata
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: codec_par.h:74
AVCodecParserContext::pts
int64_t pts
Definition: avcodec.h:2788
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
avformat_new_stream
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
Definition: utils.c:4375
AVCodecParameters::codec_type
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:56
AVStreamInternal::avctx
AVCodecContext * avctx
The codec context used by avformat_find_stream_info, the parser, etc.
Definition: internal.h:200
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:90
av_unused
#define av_unused
Definition: attributes.h:131
flac_probe
static int flac_probe(const AVProbeData *p)
Definition: flacdec.c:231
index
fg index
Definition: ffmpeg_filter.c:168
AVPacket::data
uint8_t * data
Definition: packet.h:373
vorbiscomment.h
AVStream::internal
AVStreamInternal * internal
An opaque field for libavformat internal usage.
Definition: avformat.h:1009
data
const char data[16]
Definition: mxf.c:143
FLACDecContext::rawctx
FFRawDemuxerContext rawctx
Definition: flacdec.c:34
AV_CODEC_ID_FLAC
@ AV_CODEC_ID_FLAC
Definition: codec_id.h:434
AVProbeData::buf_size
int buf_size
Size of buf except extra allocated bytes.
Definition: avformat.h:449
flac_read_header
static int flac_read_header(AVFormatContext *s)
Definition: flacdec.c:47
sample_rate
sample_rate
Definition: ffmpeg_filter.c:156
AVIndexEntry
Definition: avformat.h:777
AVINDEX_KEYFRAME
#define AVINDEX_KEYFRAME
Definition: avformat.h:785
AVPROBE_SCORE_MAX
#define AVPROBE_SCORE_MAX
maximum score
Definition: avformat.h:458
flac_seek
static int flac_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
Definition: flacdec.c:309
fail
#define fail()
Definition: checkasm.h:136
av_add_index_entry
int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp, int size, int distance, int flags)
Add an index entry into a sorted list.
Definition: utils.c:1941
avio_tell
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:538
FFRawDemuxerContext
Definition: rawdec.h:36
AVFMT_GENERIC_INDEX
#define AVFMT_GENERIC_INDEX
Use generic index building code.
Definition: avformat.h:468
type
it s the only field you need to keep assuming you have a context There is some magic you don t need to care about around this just let it vf type
Definition: writing_filters.txt:86
av_parser_init
AVCodecParserContext * av_parser_init(int codec_id)
Definition: parser.c:34
pts
static int64_t pts
Definition: transcode_aac.c:653
SEEKPOINT_SIZE
#define SEEKPOINT_SIZE
Definition: flacdec.c:31
AVStream::duration
int64_t duration
Decoding: duration of the stream, in stream time base.
Definition: avformat.h:890
pkt
AVPacket * pkt
Definition: movenc.c:59
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:180
AVInputFormat
Definition: avformat.h:626
mask
static const uint16_t mask[17]
Definition: lzw.c:38
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
ff_raw_read_partial_packet
int ff_raw_read_partial_packet(AVFormatContext *s, AVPacket *pkt)
Definition: rawdec.c:34
s
#define s(width, name)
Definition: cbs_vp9.c:257
AVInputFormat::name
const char * name
A comma separated list of short names for the format.
Definition: avformat.h:631
AVProbeData::buf
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
Definition: avformat.h:448
AVMEDIA_TYPE_AUDIO
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
flac_picture.h
reset_index_position
static void reset_index_position(int64_t metadata_head_size, AVStream *st)
Definition: flacdec.c:38
FLAC_METADATA_TYPE_STREAMINFO
@ FLAC_METADATA_TYPE_STREAMINFO
Definition: flac.h:48
ff_raw_demuxer_class
const AVClass ff_raw_demuxer_class
Definition: rawdec.c:140
ff_flac_demuxer
const AVInputFormat ff_flac_demuxer
Definition: flacdec.c:331
AVFormatContext
Format I/O context.
Definition: avformat.h:1107
internal.h
FLACDecContext
Definition: flacdec.c:33
AVStream::codecpar
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:994
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:870
NULL
#define NULL
Definition: coverity.c:32
rawdec.h
flac_parse_block_header
static av_always_inline void flac_parse_block_header(const uint8_t *block_header, int *last, int *type, int *size)
Parse the metadata block parameters from the header.
Definition: flac.h:145
AVProbeData
This structure contains the data a format has to probe a file.
Definition: avformat.h:446
FLAC_STREAMINFO_SIZE
#define FLAC_STREAMINFO_SIZE
Definition: flac.h:34
AVCodecParserContext::flags
int flags
Definition: avcodec.h:2802
AVPROBE_SCORE_EXTENSION
#define AVPROBE_SCORE_EXTENSION
score for file extension
Definition: avformat.h:456
FLAC_METADATA_TYPE_PICTURE
@ FLAC_METADATA_TYPE_PICTURE
Definition: flac.h:54
FLAC_CHMODE_MID_SIDE
@ FLAC_CHMODE_MID_SIDE
Definition: flac.h:44
AVCodecParameters::extradata_size
int extradata_size
Size of the extradata content in bytes.
Definition: codec_par.h:78
flac_read_timestamp
static av_unused int64_t flac_read_timestamp(AVFormatContext *s, int stream_index, int64_t *ppos, int64_t pos_limit)
Definition: flacdec.c:258
avio_rl32
unsigned int avio_rl32(AVIOContext *s)
Definition: aviobuf.c:733
AVPacket::size
int size
Definition: packet.h:374
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:116
FLAC_METADATA_TYPE_VORBIS_COMMENT
@ FLAC_METADATA_TYPE_VORBIS_COMMENT
Definition: flac.h:52
AVCodecParserContext::next_frame_offset
int64_t next_frame_offset
Definition: avcodec.h:2775
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:4800
size
int size
Definition: twinvq_data.h:10344
AV_NOPTS_VALUE
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
AVStreamInternal::nb_index_entries
int nb_index_entries
Definition: internal.h:258
header
static const uint8_t header[24]
Definition: sdr2.c:67
AVPacket::dts
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed.
Definition: packet.h:372
AVStreamInternal::index_entries
AVIndexEntry * index_entries
Only used if the format does not support seeking natively.
Definition: internal.h:256
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
AVFMT_FLAG_FAST_SEEK
#define AVFMT_FLAG_FAST_SEEK
Enable fast, but inaccurate seeks for some formats.
Definition: avformat.h:1247
RETURN_ERROR
#define RETURN_ERROR(code)
Definition: flac_picture.h:27
i
int i
Definition: input.c:406
AVPacket::pts
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
Definition: packet.h:366
av_assert1
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Definition: avassert.h:53
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:243
avpriv_new_chapter
AVChapter * avpriv_new_chapter(AVFormatContext *s, int64_t id, AVRational time_base, int64_t start, int64_t end, const char *title)
Add a new chapter.
Definition: utils.c:4488
AVCodecParserContext
Definition: avcodec.h:2769
bytestream_get_buffer
static av_always_inline unsigned int bytestream_get_buffer(const uint8_t **b, uint8_t *dst, unsigned int size)
Definition: bytestream.h:363
ret
ret
Definition: filter_design.txt:187
AVStream
Stream structure.
Definition: avformat.h:847
avio_seek
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:243
AVStreamInternal::need_parsing
enum AVStreamParseType need_parsing
Definition: internal.h:384
FLACDecContext::found_seektable
int found_seektable
Definition: flacdec.c:35
pos
unsigned int pos
Definition: spdifenc.c:412
avformat.h
FLAC_METADATA_TYPE_SEEKTABLE
@ FLAC_METADATA_TYPE_SEEKTABLE
Definition: flac.h:51
AV_INPUT_BUFFER_PADDING_SIZE
#define AV_INPUT_BUFFER_PADDING_SIZE
Definition: defs.h:40
FLAC_MAX_CHANNELS
#define FLAC_MAX_CHANNELS
Definition: flac.h:35
oggdec.h
buffer
the frame and frame reference mechanism is intended to as much as expensive copies of that data while still allowing the filters to produce correct results The data is stored in buffers represented by AVFrame structures Several references can point to the same frame buffer
Definition: filter_design.txt:49
avio_read
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:616
PARSER_FLAG_USE_CODEC_TS
#define PARSER_FLAG_USE_CODEC_TS
Definition: avcodec.h:2807
AVIndexEntry::pos
int64_t pos
Definition: avformat.h:778
AVSTREAM_PARSE_FULL_RAW
@ AVSTREAM_PARSE_FULL_RAW
full parsing and repack with timestamp and position generation by parser for raw this assumes that ea...
Definition: avformat.h:772
samples
Filter the word “frame” indicates either a video frame or a group of audio samples
Definition: filter_design.txt:8
avio_skip
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
Definition: aviobuf.c:327
ff_flac_parse_picture
int ff_flac_parse_picture(AVFormatContext *s, uint8_t *buf, int buf_size, int truncate_workaround)
Definition: flac_picture.c:32
av_parser_parse2
int av_parser_parse2(AVCodecParserContext *s, AVCodecContext *avctx, uint8_t **poutbuf, int *poutbuf_size, const uint8_t *buf, int buf_size, int64_t pts, int64_t dts, int64_t pos)
Parse a packet.
Definition: parser.c:115
FLAC_METADATA_TYPE_CUESHEET
@ FLAC_METADATA_TYPE_CUESHEET
Definition: flac.h:53
raw_flac_probe
static int raw_flac_probe(const AVProbeData *p)
Definition: flacdec.c:215
av_free
#define av_free(p)
Definition: tableprint_vlc.h:34
AVDictionaryEntry
Definition: dict.h:79
AVCodecParameters::codec_id
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:60
AVPacket
This structure stores compressed data.
Definition: packet.h:350
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
AVCodecParameters::channel_layout
uint64_t channel_layout
Audio only.
Definition: codec_par.h:162
replaygain.h
flags
#define flags(name, subs,...)
Definition: cbs_av1.c:561
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:61
MKTAG
#define MKTAG(a, b, c, d)
Definition: macros.h:55
AVDictionaryEntry::value
char * value
Definition: dict.h:81
flac.h
ff_vorbis_comment
int ff_vorbis_comment(AVFormatContext *ms, AVDictionary **m, const uint8_t *buf, int size, int parse_picture)
Definition: oggparsevorbis.c:87
AV_RB24
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_WB32 unsigned int_TMPL AV_RB24
Definition: bytestream.h:97
AV_RB64
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_RB64
Definition: bytestream.h:95
AVFMT_EVENT_FLAG_METADATA_UPDATED
#define AVFMT_EVENT_FLAG_METADATA_UPDATED
Definition: avformat.h:1424
av_parser_close
void av_parser_close(AVCodecParserContext *s)
Definition: parser.c:187
AV_RB16
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_WB32 unsigned int_TMPL AV_WB24 unsigned int_TMPL AV_RB16
Definition: bytestream.h:98
av_index_search_timestamp
int av_index_search_timestamp(AVStream *st, int64_t timestamp, int flags)
Get the index for a specific timestamp.
Definition: utils.c:2058
avio_feof
int avio_feof(AVIOContext *s)
Similar to feof() but also returns nonzero on read errors.
Definition: aviobuf.c:354