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Data Structures | Macros | Functions | Variables
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 OGG_CLASS(flavor, name)
 
#define SPEEX_HEADER_SIZE   80
 
#define OPUS_HEADER_SIZE   19
 

Functions

static void ogg_update_checksum (AVFormatContext *s, AVIOContext *pb, int64_t crc_offset)
 
static int 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_togg_write_vorbiscomment (int offset, int bitexact, int *header_len, AVDictionary **m, int framing_bit)
 
static int ogg_build_flac_headers (AVCodecContext *avctx, OGGStreamContext *oggstream, int bitexact, AVDictionary **m)
 
static int ogg_build_speex_headers (AVCodecContext *avctx, OGGStreamContext *oggstream, int bitexact, AVDictionary **m)
 
static int ogg_build_opus_headers (AVCodecContext *avctx, OGGStreamContext *oggstream, int bitexact, AVDictionary **m)
 
static void ogg_write_pages (AVFormatContext *s, int flush)
 
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)
 

Variables

static const AVOption options []
 

Macro Definition Documentation

#define MAX_PAGE_SIZE   65025

Definition at line 36 of file oggenc.c.

Referenced by ogg_buffer_data().

#define OFFSET (   x)    offsetof(OGGContext, x)

Definition at line 76 of file oggenc.c.

#define PARAM   AV_OPT_FLAG_ENCODING_PARAM

Definition at line 77 of file oggenc.c.

#define OGG_CLASS (   flavor,
  name 
)
Value:
static const AVClass flavor ## _muxer_class = {\
.class_name = #name " muxer",\
.item_name = av_default_item_name,\
.option = options,\
.version = LIBAVUTIL_VERSION_INT,\
};

Definition at line 89 of file oggenc.c.

#define SPEEX_HEADER_SIZE   80

Definition at line 344 of file oggenc.c.

Referenced by ogg_build_speex_headers().

#define OPUS_HEADER_SIZE   19

Definition at line 373 of file oggenc.c.

Referenced by ogg_build_opus_headers().

Function Documentation

static void ogg_update_checksum ( AVFormatContext s,
AVIOContext pb,
int64_t  crc_offset 
)
static

Definition at line 97 of file oggenc.c.

Referenced by ogg_write_page().

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

Definition at line 106 of file oggenc.c.

Referenced by ogg_write_pages().

static int ogg_key_granule ( OGGStreamContext oggstream,
int64_t  granule 
)
static

Definition at line 144 of file oggenc.c.

Referenced by ogg_buffer_data().

static int64_t ogg_granule_to_timestamp ( OGGStreamContext oggstream,
int64_t  granule 
)
static

Definition at line 149 of file oggenc.c.

Referenced by ogg_buffer_data(), and ogg_compare_granule().

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

Definition at line 158 of file oggenc.c.

Referenced by ogg_buffer_page().

static int ogg_reset_cur_page ( OGGStreamContext oggstream)
static

Definition at line 174 of file oggenc.c.

Referenced by ogg_buffer_page().

static int ogg_buffer_page ( AVFormatContext s,
OGGStreamContext oggstream 
)
static

Definition at line 183 of file oggenc.c.

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

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

Definition at line 208 of file oggenc.c.

Referenced by ogg_write_header().

static uint8_t* ogg_write_vorbiscomment ( int  offset,
int  bitexact,
int *  header_len,
AVDictionary **  m,
int  framing_bit 
)
static
static int ogg_build_flac_headers ( AVCodecContext avctx,
OGGStreamContext oggstream,
int  bitexact,
AVDictionary **  m 
)
static

Definition at line 306 of file oggenc.c.

Referenced by ogg_write_header().

static int ogg_build_speex_headers ( AVCodecContext avctx,
OGGStreamContext oggstream,
int  bitexact,
AVDictionary **  m 
)
static

Definition at line 346 of file oggenc.c.

Referenced by ogg_write_header().

static int ogg_build_opus_headers ( AVCodecContext avctx,
OGGStreamContext oggstream,
int  bitexact,
AVDictionary **  m 
)
static

Definition at line 375 of file oggenc.c.

Referenced by ogg_write_header().

static void ogg_write_pages ( AVFormatContext s,
int  flush 
)
static

Definition at line 402 of file oggenc.c.

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

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 424 of file oggenc.c.

static int ogg_write_packet_internal ( AVFormatContext s,
AVPacket pkt 
)
static

Definition at line 565 of file oggenc.c.

Referenced by ogg_write_packet().

static int ogg_write_packet ( AVFormatContext s,
AVPacket pkt 
)
static

Definition at line 606 of file oggenc.c.

static int ogg_write_trailer ( AVFormatContext s)
static

Definition at line 623 of file oggenc.c.

Variable Documentation

const AVOption options[]
static
Initial value:
= {
{ "oggpagesize", "Set preferred Ogg page size.",
{ "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 79 of file oggenc.c.