FFmpeg
Macros | Functions | Variables
oggdec.c File Reference
#include <stdio.h>
#include "libavutil/avassert.h"
#include "libavutil/intreadwrite.h"
#include "avio_internal.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)
 
static void free_stream (AVFormatContext *s, int i)
 
static int ogg_save (AVFormatContext *s)
 
static int ogg_reset (AVFormatContext *s)
 
static const struct ogg_codecogg_find_codec (uint8_t *buf, int size)
 
static int ogg_replace_stream (AVFormatContext *s, uint32_t serial, char *magic, int page_size, int probing)
 Replace the current stream with a new one. More...
 
static int data_packets_seen (const struct ogg *ogg)
 
static int buf_realloc (struct ogg_stream *os, int size)
 
static int ogg_read_page (AVFormatContext *s, int *sid, int probing)
 
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 (const 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 40 of file oggdec.c.

Referenced by ogg_get_length(), and ogg_read_page().

#define DECODER_BUFFER_SIZE   MAX_PAGE_SIZE

Definition at line 41 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 774 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 248 of file oggdec.c.

Referenced by ogg_read_page().

static int ogg_restore ( AVFormatContext s)
static

Definition at line 118 of file oggdec.c.

Referenced by ogg_get_length(), and ogg_save().

static void free_stream ( AVFormatContext s,
int  i 
)
static

Definition at line 66 of file oggdec.c.

Referenced by ogg_read_close(), and ogg_restore().

static int ogg_save ( AVFormatContext s)
static

Definition at line 82 of file oggdec.c.

Referenced by ogg_get_length().

static int ogg_reset ( AVFormatContext s)
static

Definition at line 157 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 192 of file oggdec.c.

Referenced by ogg_packet(), and ogg_replace_stream().

static int ogg_replace_stream ( AVFormatContext s,
uint32_t  serial,
char *  magic,
int  page_size,
int  probing 
)
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 209 of file oggdec.c.

Referenced by ogg_read_page().

static int data_packets_seen ( const struct ogg ogg)
static

Definition at line 290 of file oggdec.c.

Referenced by ogg_read_page().

static int buf_realloc ( struct ogg_stream os,
int  size 
)
static

Definition at line 300 of file oggdec.c.

Referenced by ogg_read_page().

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

Definition at line 314 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 498 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 641 of file oggdec.c.

Referenced by ogg_read_header().

static int ogg_read_close ( AVFormatContext s)
static

Definition at line 710 of file oggdec.c.

Referenced by ogg_read_header().

static int ogg_read_header ( AVFormatContext s)
static

Definition at line 725 of file oggdec.c.

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

Definition at line 804 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 825 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 895 of file oggdec.c.

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

Definition at line 936 of file oggdec.c.

static int ogg_probe ( const AVProbeData p)
static

Definition at line 962 of file oggdec.c.

Variable Documentation

const struct ogg_codec* const ogg_codecs[]
static
Initial value:
= {
}
#define NULL
Definition: coverity.c:32
const struct ogg_codec ff_celt_codec
Definition: oggparsecelt.c:92
const struct ogg_codec ff_ogm_old_codec
Definition: oggparseogm.c:221
const struct ogg_codec ff_ogm_video_codec
Definition: oggparseogm.c:194
const struct ogg_codec ff_skeleton_codec
const struct ogg_codec ff_opus_codec
Definition: oggparseopus.c:181
const struct ogg_codec ff_vorbis_codec
const struct ogg_codec ff_vp8_codec
Definition: oggparsevp8.c:139
const struct ogg_codec ff_ogm_audio_codec
Definition: oggparseogm.c:203
const struct ogg_codec ff_theora_codec
const struct ogg_codec ff_flac_codec
Definition: oggparseflac.c:128
const struct ogg_codec ff_old_dirac_codec
const struct ogg_codec ff_old_flac_codec
Definition: oggparseflac.c:135
const struct ogg_codec ff_dirac_codec
const struct ogg_codec ff_speex_codec
const struct ogg_codec ff_ogm_text_codec
Definition: oggparseogm.c:212

Definition at line 43 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_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",
}
#define AVFMT_NOBINSEARCH
Format does not allow to fall back on binary search via read_timestamp.
Definition: avformat.h:468
static int ogg_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: oggdec.c:825
static int ogg_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
Definition: oggdec.c:936
#define AVFMT_TS_DISCONT
Format allows timestamp discontinuities.
Definition: avformat.h:464
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:153
static int ogg_read_close(AVFormatContext *s)
Definition: oggdec.c:710
static int ogg_probe(const AVProbeData *p)
Definition: oggdec.c:962
#define AVFMT_GENERIC_INDEX
Use generic index building code.
Definition: avformat.h:463
static int ogg_read_header(AVFormatContext *s)
Definition: oggdec.c:725
static int read_probe(const AVProbeData *pd)
Definition: jvdec.c:55
Definition: oggdec.h:102
static int64_t ogg_read_timestamp(AVFormatContext *s, int stream_index, int64_t *pos_arg, int64_t pos_limit)
Definition: oggdec.c:895

Definition at line 969 of file oggdec.c.