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Macros | Functions | Variables
oggdec.c File Reference
#include <stdio.h>
#include "libavutil/avassert.h"
#include "libavutil/intreadwrite.h"
#include "oggdec.h"
#include "avformat.h"
#include "internal.h"
#include "vorbiscomment.h"

Go to the source code of this file.

Macros

#define MAX_PAGE_SIZE   65307
 
#define DECODER_BUFFER_SIZE   MAX_PAGE_SIZE
 

Functions

static int64_t ogg_calc_pts (AVFormatContext *s, int idx, int64_t *dts)
 
static int ogg_new_stream (AVFormatContext *s, uint32_t serial)
 
static int ogg_restore (AVFormatContext *s, int discard)
 
static int ogg_save (AVFormatContext *s)
 
static int ogg_reset (AVFormatContext *s)
 
static const struct ogg_codec * ogg_find_codec (uint8_t *buf, int size)
 
static int ogg_replace_stream (AVFormatContext *s, uint32_t serial, int nsegs)
 Replace the current stream with a new one. More...
 
static int ogg_new_buf (struct ogg *ogg, int idx)
 
static int data_packets_seen (const struct ogg *ogg)
 
static int ogg_read_page (AVFormatContext *s, int *sid)
 
static int ogg_packet (AVFormatContext *s, int *sid, int *dstart, int *dsize, int64_t *fpos)
 find the next Ogg packet More...
 
static int ogg_get_length (AVFormatContext *s)
 
static int ogg_read_close (AVFormatContext *s)
 
static int ogg_read_header (AVFormatContext *s)
 
static void ogg_validate_keyframe (AVFormatContext *s, int idx, int pstart, int psize)
 
static int ogg_read_packet (AVFormatContext *s, AVPacket *pkt)
 
static int64_t ogg_read_timestamp (AVFormatContext *s, int stream_index, int64_t *pos_arg, int64_t pos_limit)
 
static int ogg_read_seek (AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
 
static int ogg_probe (AVProbeData *p)
 

Variables

static const struct ogg_codec
*const 		ogg_codecs []
 
AVInputFormat ff_ogg_demuxer
 

Macro Definition Documentation

#define MAX_PAGE_SIZE   65307

Definition at line 39 of file oggdec.c.

Referenced by ogg_get_length(), and ogg_read_page().

#define DECODER_BUFFER_SIZE   MAX_PAGE_SIZE

Definition at line 40 of file oggdec.c.

Referenced by ogg_new_stream().

Function Documentation

static int64_t ogg_calc_pts ( AVFormatContext *  s,
int  idx,
int64_t *  dts 
)
static

Definition at line 727 of file oggdec.c.

Referenced by ogg_get_length(), ogg_read_packet(), and ogg_read_timestamp().

static int ogg_new_stream ( AVFormatContext *  s,
uint32_t  serial 
)
static

Definition at line 244 of file oggdec.c.

Referenced by ogg_read_page(), and ogg_replace_stream().

static int ogg_restore ( AVFormatContext *  s,
int  discard 
)
static

Definition at line 103 of file oggdec.c.

Referenced by ogg_get_length(), and ogg_save().

static int ogg_save ( AVFormatContext *  s)
static

Definition at line 67 of file oggdec.c.

Referenced by ogg_get_length().

static int ogg_reset ( AVFormatContext *  s)
static

Definition at line 138 of file oggdec.c.

Referenced by ogg_get_length(), ogg_read_packet(), ogg_read_seek(), and ogg_read_timestamp().

static const struct ogg_codec* ogg_find_codec ( uint8_t *  buf,
int  size 
)
static

Definition at line 172 of file oggdec.c.

Referenced by ogg_packet(), and ogg_replace_stream().

static int ogg_replace_stream ( AVFormatContext *  s,
uint32_t  serial,
int  nsegs 
)
static

Replace the current stream with a new one.

This is a typical webradio situation where a new audio stream spawn (identified with a new serial) and must replace the previous one (track switch).

Definition at line 189 of file oggdec.c.

Referenced by ogg_read_page().

static int ogg_new_buf ( struct ogg *  ogg,
int  idx 
)
static

Definition at line 286 of file oggdec.c.

Referenced by ogg_read_page().

static int data_packets_seen ( const struct ogg *  ogg)
static

Definition at line 307 of file oggdec.c.

Referenced by ogg_read_page().

static int ogg_read_page ( AVFormatContext *  s,
int *  sid 
)
static

Definition at line 317 of file oggdec.c.

Referenced by ogg_get_length(), and ogg_packet().

static int ogg_packet ( AVFormatContext *  s,
int *  sid,
int *  dstart,
int *  dsize,
int64_t *  fpos 
)
static

find the next Ogg packet

Parameters
*sidis set to the stream for the packet or -1 if there is no matching stream, in that case assume all other return values to be uninitialized.
Returns
negative value on error or EOF.

Definition at line 458 of file oggdec.c.

Referenced by encode_frame(), encode_init(), libvorbis_encode_frame(), libvorbis_encode_init(), ogg_get_length(), ogg_read_header(), ogg_read_packet(), ogg_read_timestamp(), and oggvorbis_decode_frame().

static int ogg_get_length ( AVFormatContext *  s)
static

Definition at line 593 of file oggdec.c.

Referenced by ogg_read_header().

static int ogg_read_close ( AVFormatContext *  s)
static

Definition at line 660 of file oggdec.c.

Referenced by ogg_read_header().

static int ogg_read_header ( AVFormatContext *  s)
static

Definition at line 681 of file oggdec.c.

static void ogg_validate_keyframe ( AVFormatContext *  s,
int  idx,
int  pstart,
int  psize 
)
static

Definition at line 757 of file oggdec.c.

Referenced by ogg_read_packet(), and ogg_read_timestamp().

static int ogg_read_packet ( AVFormatContext *  s,
AVPacket *  pkt 
)
static

Definition at line 778 of file oggdec.c.

static int64_t ogg_read_timestamp ( AVFormatContext *  s,
int  stream_index,
int64_t *  pos_arg,
int64_t  pos_limit 
)
static

Definition at line 851 of file oggdec.c.

static int ogg_read_seek ( AVFormatContext *  s,
int  stream_index,
int64_t  timestamp,
int  flags 
)
static

Definition at line 892 of file oggdec.c.

static int ogg_probe ( AVProbeData *  p)
static

Definition at line 918 of file oggdec.c.

Variable Documentation

const struct ogg_codec* const ogg_codecs[]
static
Initial value:
= {
&ff_skeleton_codec,
&ff_daala_codec,
&ff_dirac_codec,
&ff_speex_codec,
&ff_vorbis_codec,
&ff_theora_codec,
&ff_flac_codec,
&ff_celt_codec,
&ff_opus_codec,
&ff_vp8_codec,
&ff_old_dirac_codec,
&ff_old_flac_codec,
&ff_ogm_video_codec,
&ff_ogm_audio_codec,
&ff_ogm_text_codec,
&ff_ogm_old_codec,
NULL
}
NULL
#define NULL
Definition: coverity.c:32
ff_celt_codec
const struct ogg_codec ff_celt_codec
Definition: oggparsecelt.c:85
ff_ogm_old_codec
const struct ogg_codec ff_ogm_old_codec
Definition: oggparseogm.c:211
ff_ogm_video_codec
const struct ogg_codec ff_ogm_video_codec
Definition: oggparseogm.c:184
ff_skeleton_codec
const struct ogg_codec ff_skeleton_codec
Definition: oggparseskeleton.c:96
ff_opus_codec
const struct ogg_codec ff_opus_codec
Definition: oggparseopus.c:175
ff_vorbis_codec
const struct ogg_codec ff_vorbis_codec
Definition: oggparsevorbis.c:494
ff_vp8_codec
const struct ogg_codec ff_vp8_codec
Definition: oggparsevp8.c:135
ff_ogm_audio_codec
const struct ogg_codec ff_ogm_audio_codec
Definition: oggparseogm.c:193
ff_theora_codec
const struct ogg_codec ff_theora_codec
Definition: oggparsetheora.c:207
ff_flac_codec
const struct ogg_codec ff_flac_codec
Definition: oggparseflac.c:111
ff_old_dirac_codec
const struct ogg_codec ff_old_dirac_codec
Definition: oggparsedirac.c:125
ff_old_flac_codec
const struct ogg_codec ff_old_flac_codec
Definition: oggparseflac.c:118
ff_dirac_codec
const struct ogg_codec ff_dirac_codec
Definition: oggparsedirac.c:116
ff_speex_codec
const struct ogg_codec ff_speex_codec
Definition: oggparsespeex.c:134
ff_ogm_text_codec
const struct ogg_codec ff_ogm_text_codec
Definition: oggparseogm.c:202
ff_daala_codec
const struct ogg_codec ff_daala_codec
Definition: oggparsedaala.c:247

Definition at line 42 of file oggdec.c.

AVInputFormat ff_ogg_demuxer
Initial value:
= {
.name = "ogg",
.long_name = NULL_IF_CONFIG_SMALL("Ogg"),
.priv_data_size = sizeof(struct ogg),
.read_probe = ogg_probe,
.read_header = ogg_read_header,
.read_packet = ogg_read_packet,
.read_close = ogg_read_close,
.read_seek = ogg_read_seek,
.read_timestamp = ogg_read_timestamp,
.extensions = "ogg",
.flags = AVFMT_GENERIC_INDEX | AVFMT_TS_DISCONT | AVFMT_NOBINSEARCH,
}
AVFMT_NOBINSEARCH
#define AVFMT_NOBINSEARCH
Format does not allow to fall back on binary search via read_timestamp.
Definition: avformat.h:491
ogg_probe
static int ogg_probe(AVProbeData *p)
Definition: oggdec.c:918
ogg_read_packet
static int ogg_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: oggdec.c:778
ogg_read_seek
static int ogg_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
Definition: oggdec.c:892
AVFMT_TS_DISCONT
#define AVFMT_TS_DISCONT
Format allows timestamp discontinuities.
Definition: avformat.h:487
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:176
ogg_read_close
static int ogg_read_close(AVFormatContext *s)
Definition: oggdec.c:660
read_probe
static int read_probe(AVProbeData *pd)
Definition: jvdec.c:55
AVFMT_GENERIC_INDEX
#define AVFMT_GENERIC_INDEX
Use generic index building code.
Definition: avformat.h:486
ogg_read_header
static int ogg_read_header(AVFormatContext *s)
Definition: oggdec.c:681
ogg
Definition: oggdec.h:101
ogg_read_timestamp
static int64_t ogg_read_timestamp(AVFormatContext *s, int stream_index, int64_t *pos_arg, int64_t pos_limit)
Definition: oggdec.c:851

Definition at line 925 of file oggdec.c.

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