oggenc.c File Reference

#include <stdint.h>
#include "libavutil/crc.h"
#include "libavutil/mathematics.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 "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)   offsetof(OGGContext, 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 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, 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_write_packet_internal (AVFormatContext *s, AVPacket *pkt)
static int	ogg_write_packet (AVFormatContext *s, AVPacket *pkt)
static int	ogg_write_trailer (AVFormatContext *s)
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 36 of file oggenc.c.

OFFSET

#define OFFSET

(

x

)

offsetof(OGGContext, x)

Definition at line 79 of file oggenc.c.

PARAM

#define PARAM   AV_OPT_FLAG_ENCODING_PARAM

Definition at line 80 of file oggenc.c.

SPEEX_HEADER_SIZE

#define SPEEX_HEADER_SIZE   80

Definition at line 336 of file oggenc.c.

OPUS_HEADER_SIZE

#define OPUS_HEADER_SIZE   19

Definition at line 365 of file oggenc.c.

VP8_HEADER_SIZE

#define VP8_HEADER_SIZE   26

Definition at line 395 of file oggenc.c.

Function Documentation

ogg_write_page()

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

static

Definition at line 101 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 129 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 135 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 146 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 162 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 171 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, uint8_t *  data, unsigned  size, int64_t  granule, int  header  )

static

Definition at line 196 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 273 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 300 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 338 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 367 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 397 of file oggenc.c.

Referenced by ogg_init().

ogg_write_pages()

static void ogg_write_pages ( AVFormatContext *  s, int  flush  )

static

Definition at line 446 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 468 of file oggenc.c.

ogg_write_header()

static int ogg_write_header ( AVFormatContext *  s )

static

Definition at line 601 of file oggenc.c.

ogg_write_packet_internal()

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

static

Definition at line 631 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 683 of file oggenc.c.

ogg_write_trailer()

static int ogg_write_trailer ( AVFormatContext *  s )

static

Definition at line 700 of file oggenc.c.

ogg_free()

static void ogg_free ( AVFormatContext *  s )

static

Definition at line 717 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 },
    { "oggpagesize", "Set preferred Ogg page size.",
      OFFSET(pref_size), AV_OPT_TYPE_INT, {.i64 = 0}, 0, MAX_PAGE_SIZE, PARAM},
    { "pagesize", "preferred page size in bytes (deprecated)",
        OFFSET(pref_size), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, MAX_PAGE_SIZE, 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 82 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 94 of file oggenc.c.