#include <stdio.h>
#include "libavutil/avassert.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mem.h"
#include "avio_internal.h"
#include "demux.h"
#include "oggdec.h"
#include "avformat.h"
#include "internal.h"

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_codec *	ogg_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 []

const FFInputFormat	ff_ogg_demuxer

Macro Definition Documentation

◆ MAX_PAGE_SIZE

#define MAX_PAGE_SIZE 65307

Definition at line 41 of file oggdec.c.

◆ DECODER_BUFFER_SIZE

#define DECODER_BUFFER_SIZE MAX_PAGE_SIZE

Definition at line 42 of file oggdec.c.

Function Documentation

◆ ogg_calc_pts()

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

static

Definition at line 771 of file oggdec.c.

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

◆ ogg_new_stream()

static int ogg_new_stream	(	AVFormatContext *	s,
		uint32_t	serial
	)

static

Definition at line 249 of file oggdec.c.

Referenced by ogg_read_page().

◆ ogg_restore()

static int ogg_restore ( AVFormatContext * s )

static

Definition at line 119 of file oggdec.c.

Referenced by ogg_get_length(), and ogg_save().

◆ free_stream()

static void free_stream	(	AVFormatContext *	s,
		int	i
	)

static

Definition at line 67 of file oggdec.c.

Referenced by ogg_read_close(), and ogg_restore().

◆ ogg_save()

static int ogg_save ( AVFormatContext * s )

static

Definition at line 83 of file oggdec.c.

Referenced by ogg_get_length().

◆ ogg_reset()

static int ogg_reset ( AVFormatContext * s )

static

Definition at line 158 of file oggdec.c.

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

◆ ogg_find_codec()

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

static

Definition at line 193 of file oggdec.c.

Referenced by ogg_packet(), and ogg_replace_stream().

◆ 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 210 of file oggdec.c.

Referenced by ogg_read_page().

◆ data_packets_seen()

static int data_packets_seen ( const struct ogg * ogg )

static

Definition at line 290 of file oggdec.c.

Referenced by ogg_read_page().

◆ buf_realloc()

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

static

Definition at line 300 of file oggdec.c.

Referenced by ogg_read_page().

◆ 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().

◆ ogg_packet()

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

static

find the next Ogg packet

Parameters

*sid	is 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 500 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().

◆ ogg_get_length()

static int ogg_get_length ( AVFormatContext * s )

static

Definition at line 644 of file oggdec.c.

Referenced by ogg_read_header().

◆ ogg_read_close()

static int ogg_read_close ( AVFormatContext * s )

static

Definition at line 713 of file oggdec.c.

◆ ogg_read_header()

static int ogg_read_header ( AVFormatContext * s )

static

Definition at line 728 of file oggdec.c.

◆ ogg_validate_keyframe()

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

static

Definition at line 801 of file oggdec.c.

Referenced by ogg_read_packet(), and ogg_read_timestamp().

◆ ogg_read_packet()

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

static

Definition at line 822 of file oggdec.c.

◆ ogg_read_timestamp()

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

static

Definition at line 892 of file oggdec.c.

◆ ogg_read_seek()

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

static

Definition at line 933 of file oggdec.c.

◆ ogg_probe()

static int ogg_probe ( const AVProbeData * p )

static

Definition at line 959 of file oggdec.c.

Variable Documentation

◆ ogg_codecs

const struct ogg_codec* const ogg_codecs[]

static

Initial value:

= {
    &ff_skeleton_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
}

Definition at line 44 of file oggdec.c.

Referenced by ogg_find_codec().

◆ ff_ogg_demuxer

const FFInputFormat ff_ogg_demuxer

Initial value:

= {
    .p.name         = "ogg",
    .p.long_name    = NULL_IF_CONFIG_SMALL("Ogg"),
    .p.extensions   = "ogg",
    .p.flags        = AVFMT_GENERIC_INDEX | AVFMT_TS_DISCONT | AVFMT_NOBINSEARCH,
    .priv_data_size = sizeof(struct ogg),
    .flags_internal = FF_INFMT_FLAG_INIT_CLEANUP,
    .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,
}

Definition at line 966 of file oggdec.c.

Macros

Functions

Variables

Macro Definition Documentation

◆ MAX_PAGE_SIZE

◆ DECODER_BUFFER_SIZE

Function Documentation

◆ ogg_calc_pts()

◆ ogg_new_stream()

◆ ogg_restore()

◆ free_stream()

◆ ogg_save()

◆ ogg_reset()

◆ ogg_find_codec()

◆ ogg_replace_stream()

◆ data_packets_seen()

◆ buf_realloc()

◆ ogg_read_page()

◆ ogg_packet()

◆ ogg_get_length()

◆ ogg_read_close()

◆ ogg_read_header()

◆ ogg_validate_keyframe()

◆ ogg_read_packet()

◆ ogg_read_timestamp()

◆ ogg_read_seek()

◆ ogg_probe()

Variable Documentation

◆ ogg_codecs

◆ ff_ogg_demuxer