libavformat/oggdec.c File Reference

#include <stdio.h>
#include "libavutil/avassert.h"
#include "oggdec.h"
#include "avformat.h"
#include "internal.h"
#include "vorbiscomment.h"

Go to the source code of this file.

Defines
#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_save (AVFormatContext *s)
static int	ogg_restore (AVFormatContext *s, int discard)
static int	ogg_reset (AVFormatContext *s)
static struct ogg_codec *	ogg_find_codec (uint8_t *buf, int size)
static int	ogg_new_stream (AVFormatContext *s, uint32_t serial, int new_avstream)
static int	ogg_new_buf (struct ogg *ogg, int idx)
static int	ogg_read_page (AVFormatContext *s, int *str)
static int	ogg_packet (AVFormatContext *s, int *str, int *dstart, int *dsize, int64_t *fpos)
	find the next Ogg packet
static int	ogg_get_headers (AVFormatContext *s)
static int	ogg_get_length (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 int	ogg_read_close (AVFormatContext *s)
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 struct ogg_codec *const	ogg_codecs []
AVInputFormat	ff_ogg_demuxer

---

Define Documentation

#define DECODER_BUFFER_SIZE   MAX_PAGE_SIZE

Definition at line 39 of file oggdec.c.

Referenced by ogg_new_stream().

#define MAX_PAGE_SIZE   65307

Definition at line 38 of file oggdec.c.

Referenced by ogg_get_length(), and ogg_read_page().

---

Function Documentation

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

Definition at line 575 of file oggdec.c.

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

static struct ogg_codec* ogg_find_codec	(	uint8_t *	buf,
		int	size
	)			[static, read]

Definition at line 151 of file oggdec.c.

Referenced by ogg_packet().

static int ogg_get_headers

(

AVFormatContext *

s

)

[static]

Definition at line 477 of file oggdec.c.

Referenced by ogg_read_header().

static int ogg_get_length

(

AVFormatContext *

s

)

[static]

Definition at line 493 of file oggdec.c.

Referenced by ogg_read_header().

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

Definition at line 192 of file oggdec.c.

Referenced by ogg_read_page().

static int ogg_new_stream	(	AVFormatContext *	s,
		uint32_t	serial,
		int	new_avstream
	)			[static]

Definition at line 163 of file oggdec.c.

Referenced by ogg_read_page().

static int ogg_packet	(	AVFormatContext *	s,
		int *	str,
		int *	dstart,
		int *	dsize,
		int64_t *	fpos
	)			[static]

find the next Ogg packet

Parameters:

*str

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 346 of file oggdec.c.

Referenced by encode_frame(), encode_init(), ogg_get_headers(), ogg_get_length(), ogg_read_packet(), ogg_read_timestamp(), oggvorbis_decode_frame(), oggvorbis_encode_frame(), and oggvorbis_encode_init().

static int ogg_probe

(

AVProbeData *

p

)

[static]

Definition at line 734 of file oggdec.c.

static int ogg_read_close

(

AVFormatContext *

s

)

[static]

Definition at line 661 of file oggdec.c.

static int ogg_read_header

(

AVFormatContext *

s

)

[static]

Definition at line 554 of file oggdec.c.

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

Definition at line 618 of file oggdec.c.

static int ogg_read_page	(	AVFormatContext *	s,
		int *	str
	)			[static]

Definition at line 208 of file oggdec.c.

Referenced by ogg_get_length(), and ogg_packet().

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

Definition at line 709 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 674 of file oggdec.c.

static int ogg_reset

(

AVFormatContext *

s

)

[static]

Definition at line 122 of file oggdec.c.

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

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

Definition at line 84 of file oggdec.c.

Referenced by ogg_get_length().

static int ogg_save

(

AVFormatContext *

s

)

[static]

Definition at line 61 of file oggdec.c.

Referenced by ogg_get_length().

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

Definition at line 605 of file oggdec.c.

Referenced by ogg_read_packet(), and ogg_read_timestamp().

---

Variable Documentation

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,
}

Definition at line 741 of file oggdec.c.

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_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 41 of file oggdec.c.