libavformat/oggenc.c File Reference

#include "libavutil/crc.h"
#include "libavcodec/xiph.h"
#include "libavcodec/bytestream.h"
#include "libavcodec/flac.h"
#include "avformat.h"
#include "internal.h"
#include "vorbiscomment.h"

Go to the source code of this file.

Data Structures
struct	OGGPage
struct	OGGStreamContext
struct	OGGPageList
struct	OGGContext
Defines
#define	MAX_PAGE_SIZE   65025
#define	SPEEX_HEADER_SIZE   80
Functions
static void	ogg_update_checksum (AVFormatContext *s, int64_t crc_offset)
static void	ogg_write_page (AVFormatContext *s, OGGPage *page, int extra_flags)
static int64_t	ogg_granule_to_timestamp (OGGStreamContext *oggstream, OGGPage *page)
static int	ogg_compare_granule (AVFormatContext *s, OGGPage *next, OGGPage *page)
static int	ogg_reset_cur_page (OGGStreamContext *oggstream)
static int	ogg_buffer_page (AVFormatContext *s, OGGStreamContext *oggstream)
static int	ogg_buffer_data (AVFormatContext *s, AVStream *st, uint8_t *data, unsigned size, int64_t granule)
static uint8_t *	ogg_write_vorbiscomment (int offset, int bitexact, int *header_len, AVMetadata *m)
static int	ogg_build_flac_headers (AVCodecContext *avctx, OGGStreamContext *oggstream, int bitexact, AVMetadata *m)
static int	ogg_build_speex_headers (AVCodecContext *avctx, OGGStreamContext *oggstream, int bitexact, AVMetadata *m)
static int	ogg_write_header (AVFormatContext *s)
static void	ogg_write_pages (AVFormatContext *s, int flush)
static int	ogg_write_packet (AVFormatContext *s, AVPacket *pkt)
static int	ogg_write_trailer (AVFormatContext *s)
Variables
AVOutputFormat	ogg_muxer

---

Define Documentation

#define MAX_PAGE_SIZE   65025

Definition at line 30 of file oggenc.c.

#define SPEEX_HEADER_SIZE   80

Definition at line 251 of file oggenc.c.

Referenced by ogg_build_speex_headers().

---

Function Documentation

static int ogg_buffer_data	(	AVFormatContext *	s,
		AVStream *	st,
		uint8_t *	data,
		unsigned	size,
		int64_t	granule
	)			[static]

Definition at line 155 of file oggenc.c.

Referenced by ogg_write_header(), and ogg_write_packet().

static int ogg_buffer_page	(	AVFormatContext *	s,
		OGGStreamContext *	oggstream
	)			[static]

Definition at line 131 of file oggenc.c.

Referenced by ogg_buffer_data(), ogg_write_header(), and ogg_write_trailer().

static int ogg_build_flac_headers	(	AVCodecContext *	avctx,
		OGGStreamContext *	oggstream,
		int	bitexact,
		AVMetadata *	m
	)			[static]

Definition at line 213 of file oggenc.c.

Referenced by ogg_write_header().

static int ogg_build_speex_headers	(	AVCodecContext *	avctx,
		OGGStreamContext *	oggstream,
		int	bitexact,
		AVMetadata *	m
	)			[static]

Definition at line 253 of file oggenc.c.

Referenced by ogg_write_header().

static int ogg_compare_granule	(	AVFormatContext *	s,
		OGGPage *	next,
		OGGPage *	page
	)			[static]

Definition at line 106 of file oggenc.c.

Referenced by ogg_buffer_page().

static int64_t ogg_granule_to_timestamp	(	OGGStreamContext *	oggstream,
		OGGPage *	page
	)			[static]

Definition at line 97 of file oggenc.c.

Referenced by ogg_compare_granule().

static int ogg_reset_cur_page

(

OGGStreamContext *

oggstream

)

[static]

Definition at line 122 of file oggenc.c.

Referenced by ogg_buffer_page().

static void ogg_update_checksum	(	AVFormatContext *	s,
		int64_t	crc_offset
	)			[static]

Definition at line 65 of file oggenc.c.

Referenced by ogg_write_page().

static int ogg_write_header

(

AVFormatContext *

s

)

[static]

KFGSHIFT is the width of the less significant section of the granule position The less significant section is the frame count since the last keyframe

Definition at line 280 of file oggenc.c.

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

Definition at line 384 of file oggenc.c.

static void ogg_write_page	(	AVFormatContext *	s,
		OGGPage *	page,
		int	extra_flags
	)			[static]

Definition at line 74 of file oggenc.c.

Referenced by ogg_write_pages().

static void ogg_write_pages	(	AVFormatContext *	s,
		int	flush
	)			[static]

Definition at line 362 of file oggenc.c.

Referenced by ogg_write_packet(), and ogg_write_trailer().

static int ogg_write_trailer

(

AVFormatContext *

s

)

[static]

Definition at line 416 of file oggenc.c.

static uint8_t* ogg_write_vorbiscomment	(	int	offset,
		int	bitexact,
		int *	header_len,
		AVMetadata *	m
	)			[static]

Definition at line 192 of file oggenc.c.

Referenced by ogg_build_flac_headers(), and ogg_build_speex_headers().

---

Variable Documentation

AVOutputFormat ogg_muxer

Initial value:

 {
    "ogg",
    NULL_IF_CONFIG_SMALL("Ogg"),
    "application/ogg",
    "ogg,ogv,spx",
    sizeof(OGGContext),
    CODEC_ID_FLAC,
    CODEC_ID_THEORA,
    ogg_write_header,
    ogg_write_packet,
    ogg_write_trailer,
    .metadata_conv = ff_vorbiscomment_metadata_conv,
}

Definition at line 439 of file oggenc.c.