libvorbisenc.c File Reference

#include <vorbis/vorbisenc.h>
#include "libavutil/avassert.h"
#include "libavutil/channel_layout.h"
#include "libavutil/fifo.h"
#include "libavutil/opt.h"
#include "avcodec.h"
#include "audio_frame_queue.h"
#include "codec_internal.h"
#include "encode.h"
#include "version.h"
#include "vorbis_parser.h"

Go to the source code of this file.

Data Structures
struct	LibvorbisEncContext

Macros
#define	LIBVORBIS_FRAME_SIZE   64
#define	BUFFER_SIZE   (1024 * 64)

Functions
static int	vorbis_error_to_averror (int ov_err)
static av_cold int	libvorbis_setup (vorbis_info *vi, AVCodecContext *avctx)
static int	xiph_len (int l)
static av_cold int	libvorbis_encode_close (AVCodecContext *avctx)
static av_cold int	libvorbis_encode_init (AVCodecContext *avctx)
static int	libvorbis_encode_frame (AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr)

Variables
static const AVOption	options []
static const FFCodecDefault	defaults []
static const AVClass	vorbis_class
static const uint8_t	vorbis_encoding_channel_layout_offsets [8][8]
const FFCodec	ff_libvorbis_encoder

Macro Definition Documentation

LIBVORBIS_FRAME_SIZE

#define LIBVORBIS_FRAME_SIZE   64

Definition at line 40 of file libvorbisenc.c.

BUFFER_SIZE

#define BUFFER_SIZE   (1024 * 64)

Definition at line 42 of file libvorbisenc.c.

Function Documentation

vorbis_error_to_averror()

static int vorbis_error_to_averror ( int  ov_err )

static

Definition at line 86 of file libvorbisenc.c.

Referenced by libvorbis_encode_frame(), libvorbis_encode_init(), and libvorbis_setup().

libvorbis_setup()

static av_cold int libvorbis_setup ( vorbis_info *  vi, AVCodecContext *  avctx  )

static

Definition at line 96 of file libvorbisenc.c.

Referenced by libvorbis_encode_init().

xiph_len()

static int xiph_len ( int  l )

static

Definition at line 182 of file libvorbisenc.c.

Referenced by libvorbis_encode_init().

libvorbis_encode_close()

static av_cold int libvorbis_encode_close ( AVCodecContext *  avctx )

static

Definition at line 187 of file libvorbisenc.c.

Referenced by libvorbis_encode_init().

libvorbis_encode_init()

static av_cold int libvorbis_encode_init ( AVCodecContext *  avctx )

static

Definition at line 207 of file libvorbisenc.c.

libvorbis_encode_frame()

static int libvorbis_encode_frame ( AVCodecContext *  avctx, AVPacket *  avpkt, const AVFrame *  frame, int *  got_packet_ptr  )

static

Definition at line 286 of file libvorbisenc.c.

Variable Documentation

options

const AVOption options[]

static

Initial value:

= {
    { "iblock", "Sets the impulse block bias", 0x42, AV_OPT_TYPE_DOUBLE, { .dbl = 0 }, -15, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
    { NULL }
}

Definition at line 58 of file libvorbisenc.c.

defaults

const FFCodecDefault defaults[]

static

Initial value:

= {
    { "b",  "0" },
    { NULL },
}

Definition at line 63 of file libvorbisenc.c.

vorbis_class

const AVClass vorbis_class

static

Initial value:

= {
    .class_name = "libvorbis",
    .item_name  = av_default_item_name,
    .option     = options,
    .version    = LIBAVUTIL_VERSION_INT,
}

Definition at line 68 of file libvorbisenc.c.

vorbis_encoding_channel_layout_offsets

const uint8_t vorbis_encoding_channel_layout_offsets[8][8]

static

Initial value:

= {
    { 0 },
    { 0, 1 },
    { 0, 2, 1 },
    { 0, 1, 2, 3 },
    { 0, 2, 1, 3, 4 },
    { 0, 2, 1, 4, 5, 3 },
    { 0, 2, 1, 5, 6, 4, 3 },
    { 0, 2, 1, 6, 7, 4, 5, 3 },
}

Definition at line 75 of file libvorbisenc.c.

Referenced by libvorbis_encode_frame().

ff_libvorbis_encoder

const FFCodec ff_libvorbis_encoder

Initial value:

= {
    .p.name         = "libvorbis",
    CODEC_LONG_NAME("libvorbis"),
    .p.type         = AVMEDIA_TYPE_AUDIO,
    .p.id           = AV_CODEC_ID_VORBIS,
    .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY |
                      AV_CODEC_CAP_SMALL_LAST_FRAME,
    .caps_internal  = FF_CODEC_CAP_NOT_INIT_THREADSAFE,
    .priv_data_size = sizeof(LibvorbisEncContext),
    .init           = libvorbis_encode_init,
    FF_CODEC_ENCODE_CB(libvorbis_encode_frame),
    .close          = libvorbis_encode_close,
    .p.sample_fmts  = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_FLTP,
                                                      AV_SAMPLE_FMT_NONE },
    .p.priv_class   = &vorbis_class,
    .defaults       = defaults,
    .p.wrapper_name = "libvorbis",
}

Definition at line 376 of file libvorbisenc.c.