oggenc.c File Reference

#include "config_components.h"
#include <stdint.h>
#include "libavutil/crc.h"
#include "libavutil/mathematics.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"
#include "libavutil/random_seed.h"
#include "libavcodec/xiph.h"
#include "libavcodec/bytestream.h"
#include "libavcodec/flac.h"
#include "avformat.h"
#include "avio_internal.h"
#include "internal.h"
#include "mux.h"
#include "version.h"
#include "vorbiscomment.h"

Go to the source code of this file.

Data Structures
struct	OGGPage
struct	OGGStreamContext
struct	OGGPageList
struct	OGGContext

Macros
#define	MAX_PAGE_SIZE   65025
#define	OFFSET(x)
#define	PARAM   AV_OPT_FLAG_ENCODING_PARAM
#define	SPEEX_HEADER_SIZE   80
#define	OPUS_HEADER_SIZE   19
#define	VP8_HEADER_SIZE   26

Functions
static int	ogg_write_trailer (AVFormatContext *s)
static void	ogg_cleanup_stream (AVStream *st)
static void	ogg_write_page (AVFormatContext *s, OGGPage *page, int extra_flags)
static int	ogg_key_granule (OGGStreamContext *oggstream, int64_t granule)
static int64_t	ogg_granule_to_timestamp (OGGStreamContext *oggstream, int64_t granule)
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, const uint8_t *data, unsigned size, int64_t granule, int header)
static uint8_t *	ogg_write_vorbiscomment (int64_t offset, int bitexact, int *header_len, AVDictionary **m, int framing_bit, AVChapter **chapters, unsigned int nb_chapters)
static int	ogg_build_flac_headers (AVCodecParameters *par, OGGStreamContext *oggstream, int bitexact, AVDictionary **m)
static int	ogg_build_speex_headers (AVCodecParameters *par, OGGStreamContext *oggstream, int bitexact, AVDictionary **m)
static int	ogg_build_opus_headers (AVCodecParameters *par, OGGStreamContext *oggstream, int bitexact, AVDictionary **m, AVChapter **chapters, unsigned int nb_chapters)
static int	ogg_build_vp8_headers (AVFormatContext *s, AVStream *st, OGGStreamContext *oggstream, int bitexact)
static void	ogg_write_pages (AVFormatContext *s, int flush)
static int	ogg_init (AVFormatContext *s)
static int	ogg_write_header (AVFormatContext *s)
static int	ogg_check_new_metadata (AVFormatContext *s, AVPacket *pkt)
static int	ogg_write_packet_internal (AVFormatContext *s, AVPacket *pkt)
static int	ogg_write_packet (AVFormatContext *s, AVPacket *pkt)
static void	ogg_free (AVFormatContext *s)

Variables
static const AVOption	options []
static const AVClass	ogg_muxer_class

Macro Definition Documentation

MAX_PAGE_SIZE

#define MAX_PAGE_SIZE   65025

Definition at line 41 of file oggenc.c.

OFFSET

#define OFFSET

(

x

)

Value:

offsetof(OGGContext, x)

Definition at line 85 of file oggenc.c.

PARAM

#define PARAM   AV_OPT_FLAG_ENCODING_PARAM

Definition at line 86 of file oggenc.c.

SPEEX_HEADER_SIZE

#define SPEEX_HEADER_SIZE   80

Definition at line 357 of file oggenc.c.

Referenced by ogg_build_speex_headers().

OPUS_HEADER_SIZE

#define OPUS_HEADER_SIZE   19

Definition at line 386 of file oggenc.c.

Referenced by ogg_build_opus_headers().

VP8_HEADER_SIZE

#define VP8_HEADER_SIZE   26

Definition at line 416 of file oggenc.c.

Referenced by ogg_build_vp8_headers(), and vp8_header().

Function Documentation

ogg_write_trailer()

static int ogg_write_trailer ( AVFormatContext * s )

static

Definition at line 784 of file oggenc.c.

Referenced by ogg_check_new_metadata().

ogg_cleanup_stream()

static void ogg_cleanup_stream ( AVStream * st )

static

Definition at line 105 of file oggenc.c.

Referenced by ogg_free(), and ogg_init().

ogg_write_page()

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

static

Definition at line 119 of file oggenc.c.

Referenced by ogg_write_pages().

ogg_key_granule()

static int ogg_key_granule ( OGGStreamContext * oggstream, int64_t granule )

static

Definition at line 147 of file oggenc.c.

Referenced by ogg_buffer_data().

ogg_granule_to_timestamp()

static int64_t ogg_granule_to_timestamp ( OGGStreamContext * oggstream, int64_t granule )

static

Definition at line 153 of file oggenc.c.

Referenced by ogg_buffer_data(), ogg_buffer_page(), and ogg_compare_granule().

ogg_compare_granule()

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

static

Definition at line 164 of file oggenc.c.

Referenced by ogg_buffer_page().

ogg_reset_cur_page()

static int ogg_reset_cur_page ( OGGStreamContext * oggstream )

static

Definition at line 180 of file oggenc.c.

Referenced by ogg_buffer_page().

ogg_buffer_page()

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

static

Definition at line 189 of file oggenc.c.

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

ogg_buffer_data()

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

static

Definition at line 214 of file oggenc.c.

Referenced by ogg_write_header(), and ogg_write_packet_internal().

ogg_write_vorbiscomment()

static uint8_t * ogg_write_vorbiscomment ( int64_t offset, int bitexact, int * header_len, AVDictionary ** m, int framing_bit, AVChapter ** chapters, unsigned int nb_chapters )

static

Definition at line 291 of file oggenc.c.

Referenced by ogg_build_flac_headers(), ogg_build_opus_headers(), ogg_build_speex_headers(), ogg_build_vp8_headers(), and ogg_init().

ogg_build_flac_headers()

static int ogg_build_flac_headers ( AVCodecParameters * par, OGGStreamContext * oggstream, int bitexact, AVDictionary ** m )

static

Definition at line 321 of file oggenc.c.

Referenced by ogg_init().

ogg_build_speex_headers()

static int ogg_build_speex_headers ( AVCodecParameters * par, OGGStreamContext * oggstream, int bitexact, AVDictionary ** m )

static

Definition at line 359 of file oggenc.c.

Referenced by ogg_init().

ogg_build_opus_headers()

static int ogg_build_opus_headers ( AVCodecParameters * par, OGGStreamContext * oggstream, int bitexact, AVDictionary ** m, AVChapter ** chapters, unsigned int nb_chapters )

static

Definition at line 388 of file oggenc.c.

Referenced by ogg_init().

ogg_build_vp8_headers()

static int ogg_build_vp8_headers ( AVFormatContext * s, AVStream * st, OGGStreamContext * oggstream, int bitexact )

static

Definition at line 418 of file oggenc.c.

Referenced by ogg_init().

ogg_write_pages()

static void ogg_write_pages ( AVFormatContext * s, int flush )

static

Definition at line 467 of file oggenc.c.

Referenced by ogg_write_header(), ogg_write_packet(), ogg_write_packet_internal(), and ogg_write_trailer().

ogg_init()

static int ogg_init ( 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 491 of file oggenc.c.

Referenced by ogg_check_new_metadata().

ogg_write_header()

static int ogg_write_header ( AVFormatContext * s )

static

Definition at line 628 of file oggenc.c.

Referenced by ogg_check_new_metadata().

ogg_check_new_metadata()

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

static

Definition at line 658 of file oggenc.c.

Referenced by ogg_write_packet_internal().

ogg_write_packet_internal()

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

static

Definition at line 706 of file oggenc.c.

Referenced by ogg_write_packet().

ogg_write_packet()

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

static

Definition at line 767 of file oggenc.c.

ogg_free()

static void ogg_free ( AVFormatContext * s )

static

Definition at line 801 of file oggenc.c.

Variable Documentation

options

const AVOption options[]

static

Initial value:

= {
    { "serial_offset", "serial number offset",
        OFFSET(serial_offset), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, PARAM },
    { "page_duration", "preferred page duration, in microseconds",
        OFFSET(pref_duration), AV_OPT_TYPE_INT64, { .i64 = 1000000 }, 0, INT64_MAX, PARAM },
    { NULL },
}

Definition at line 90 of file oggenc.c.

ogg_muxer_class

const AVClass ogg_muxer_class

static

Initial value:

= {
    .class_name = "Ogg (audio/video/Speex/Opus) muxer",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 98 of file oggenc.c.