vorbisenc.c File Reference

#include <float.h>
#include "libavutil/float_dsp.h"
#include "avcodec.h"
#include "encode.h"
#include "internal.h"
#include "fft.h"
#include "mathops.h"
#include "vorbis.h"
#include "vorbis_enc_data.h"
#include "audio_frame_queue.h"
#include "libavfilter/bufferqueue.h"
#include "put_bits.h"
#include <assert.h>

Go to the source code of this file.

Data Structures
struct	vorbis_enc_codebook
struct	vorbis_enc_floor_class
struct	vorbis_enc_floor
struct	vorbis_enc_residue
struct	vorbis_enc_mapping
struct	vorbis_enc_mode
struct	vorbis_enc_context

Macros
#define	BITSTREAM_WRITER_LE
#define	MAX_CHANNELS   2
#define	MAX_CODEBOOK_DIM   8
#define	MAX_FLOOR_CLASS_DIM   4
#define	NUM_FLOOR_PARTITIONS   8
#define	MAX_FLOOR_VALUES   (MAX_FLOOR_CLASS_DIM*NUM_FLOOR_PARTITIONS+2)
#define	RESIDUE_SIZE   1600
#define	RESIDUE_PART_SIZE   32
#define	NUM_RESIDUE_PARTITIONS   (RESIDUE_SIZE/RESIDUE_PART_SIZE)

Functions
static int	put_codeword (PutBitContext *pb, vorbis_enc_codebook *cb, int entry)
static int	cb_lookup_vals (int lookup, int dimensions, int entries)
static int	ready_codebook (vorbis_enc_codebook *cb)
static int	ready_residue (vorbis_enc_residue *rc, vorbis_enc_context *venc)
static av_cold int	dsp_init (AVCodecContext *avctx, vorbis_enc_context *venc)
static int	create_vorbis_context (vorbis_enc_context *venc, AVCodecContext *avctx)
static void	put_float (PutBitContext *pb, float f)
static void	put_codebook_header (PutBitContext *pb, vorbis_enc_codebook *cb)
static void	put_floor_header (PutBitContext *pb, vorbis_enc_floor *fc)
static void	put_residue_header (PutBitContext *pb, vorbis_enc_residue *rc)
static int	put_main_header (vorbis_enc_context *venc, uint8_t **out)
static float	get_floor_average (vorbis_enc_floor *fc, float *coeffs, int i)
static void	floor_fit (vorbis_enc_context *venc, vorbis_enc_floor *fc, float *coeffs, uint16_t *posts, int samples)
static int	render_point (int x0, int y0, int x1, int y1, int x)
static int	floor_encode (vorbis_enc_context *venc, vorbis_enc_floor *fc, PutBitContext *pb, uint16_t *posts, float *floor, int samples)
static float *	put_vector (vorbis_enc_codebook *book, PutBitContext *pb, float *num)
static int	residue_encode (vorbis_enc_context *venc, vorbis_enc_residue *rc, PutBitContext *pb, float *coeffs, int samples, int real_ch)
static int	apply_window_and_mdct (vorbis_enc_context *venc)
static AVFrame *	spawn_empty_frame (AVCodecContext *avctx, int channels)
static void	move_audio (vorbis_enc_context *venc, int sf_size)
static int	vorbis_encode_frame (AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr)
static av_cold int	vorbis_encode_close (AVCodecContext *avctx)
static av_cold int	vorbis_encode_init (AVCodecContext *avctx)

Variables
const AVCodec	ff_vorbis_encoder

Detailed Description

Native Vorbis encoder.

Author

Oded Shimon ods15.nosp@m.@ods.nosp@m.15.dy.nosp@m.ndns.nosp@m..org

Definition in file vorbisenc.c.

Macro Definition Documentation

BITSTREAM_WRITER_LE

#define BITSTREAM_WRITER_LE

Definition at line 41 of file vorbisenc.c.

MAX_CHANNELS

#define MAX_CHANNELS   2

Definition at line 142 of file vorbisenc.c.

MAX_CODEBOOK_DIM

#define MAX_CODEBOOK_DIM   8

Definition at line 143 of file vorbisenc.c.

MAX_FLOOR_CLASS_DIM

#define MAX_FLOOR_CLASS_DIM   4

Definition at line 145 of file vorbisenc.c.

NUM_FLOOR_PARTITIONS

#define NUM_FLOOR_PARTITIONS   8

Definition at line 146 of file vorbisenc.c.

MAX_FLOOR_VALUES

#define MAX_FLOOR_VALUES   (MAX_FLOOR_CLASS_DIM*NUM_FLOOR_PARTITIONS+2)

Definition at line 147 of file vorbisenc.c.

RESIDUE_SIZE

#define RESIDUE_SIZE   1600

Definition at line 149 of file vorbisenc.c.

RESIDUE_PART_SIZE

#define RESIDUE_PART_SIZE   32

Definition at line 150 of file vorbisenc.c.

NUM_RESIDUE_PARTITIONS

#define NUM_RESIDUE_PARTITIONS   (RESIDUE_SIZE/RESIDUE_PART_SIZE)

Definition at line 151 of file vorbisenc.c.

Function Documentation

put_codeword()

static int put_codeword ( PutBitContext *  pb, vorbis_enc_codebook *  cb, int  entry  )

inlinestatic

Definition at line 153 of file vorbisenc.c.

Referenced by floor_encode(), put_vector(), and residue_encode().

cb_lookup_vals()

static int cb_lookup_vals ( int  lookup, int  dimensions, int  entries  )

static

Definition at line 165 of file vorbisenc.c.

Referenced by create_vorbis_context(), put_codebook_header(), and ready_codebook().

ready_codebook()

static int ready_codebook ( vorbis_enc_codebook *  cb )

static

Definition at line 174 of file vorbisenc.c.

Referenced by create_vorbis_context().

ready_residue()

static int ready_residue ( vorbis_enc_residue *  rc, vorbis_enc_context *  venc  )

static

Definition at line 211 of file vorbisenc.c.

Referenced by create_vorbis_context().

dsp_init()

static av_cold int dsp_init ( AVCodecContext *  avctx, vorbis_enc_context *  venc  )

static

Definition at line 250 of file vorbisenc.c.

Referenced by create_vorbis_context().

create_vorbis_context()

static int create_vorbis_context ( vorbis_enc_context *  venc, AVCodecContext *  avctx  )

static

Definition at line 270 of file vorbisenc.c.

Referenced by vorbis_encode_init().

put_float()

static void put_float ( PutBitContext *  pb, float  f  )

static

Definition at line 475 of file vorbisenc.c.

Referenced by put_codebook_header().

put_codebook_header()

static void put_codebook_header ( PutBitContext *  pb, vorbis_enc_codebook *  cb  )

static

Definition at line 489 of file vorbisenc.c.

Referenced by put_main_header().

put_floor_header()

static void put_floor_header ( PutBitContext *  pb, vorbis_enc_floor *  fc  )

static

Definition at line 554 of file vorbisenc.c.

Referenced by put_main_header().

put_residue_header()

static void put_residue_header ( PutBitContext *  pb, vorbis_enc_residue *  rc  )

static

Definition at line 587 of file vorbisenc.c.

Referenced by put_main_header().

put_main_header()

static int put_main_header ( vorbis_enc_context *  venc, uint8_t **  out  )

static

Definition at line 619 of file vorbisenc.c.

Referenced by vorbis_encode_init().

get_floor_average()

static float get_floor_average ( vorbis_enc_floor *  fc, float *  coeffs, int  i  )

static

Definition at line 754 of file vorbisenc.c.

Referenced by floor_fit().

floor_fit()

static void floor_fit ( vorbis_enc_context *  venc, vorbis_enc_floor *  fc, float *  coeffs, uint16_t *  posts, int  samples  )

static

Definition at line 766 of file vorbisenc.c.

Referenced by vorbis_encode_frame().

render_point()

static int render_point ( int  x0, int  y0, int  x1, int  y1, int  x  )

static

Definition at line 793 of file vorbisenc.c.

Referenced by floor_encode().

floor_encode()

static int floor_encode ( vorbis_enc_context *  venc, vorbis_enc_floor *  fc, PutBitContext *  pb, uint16_t *  posts, float *  floor, int  samples  )

static

Definition at line 798 of file vorbisenc.c.

Referenced by vorbis_encode_frame().

put_vector()

static float* put_vector ( vorbis_enc_codebook *  book, PutBitContext *  pb, float *  num  )

static

Definition at line 887 of file vorbisenc.c.

Referenced by residue_encode().

residue_encode()

static int residue_encode ( vorbis_enc_context *  venc, vorbis_enc_residue *  rc, PutBitContext *  pb, float *  coeffs, int  samples, int  real_ch  )

static

Definition at line 910 of file vorbisenc.c.

Referenced by vorbis_encode_frame().

apply_window_and_mdct()

static int apply_window_and_mdct ( vorbis_enc_context *  venc )

static

Definition at line 1005 of file vorbisenc.c.

Referenced by vorbis_encode_frame().

spawn_empty_frame()

static AVFrame* spawn_empty_frame ( AVCodecContext *  avctx, int  channels  )

static

Definition at line 1031 of file vorbisenc.c.

Referenced by vorbis_encode_frame().

move_audio()

static void move_audio ( vorbis_enc_context *  venc, int  sf_size  )

static

Definition at line 1056 of file vorbisenc.c.

Referenced by vorbis_encode_frame().

vorbis_encode_frame()

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

static

Definition at line 1090 of file vorbisenc.c.

vorbis_encode_close()

static av_cold int vorbis_encode_close ( AVCodecContext *  avctx )

static

Definition at line 1204 of file vorbisenc.c.

Referenced by vorbis_encode_init().

vorbis_encode_init()

static av_cold int vorbis_encode_init ( AVCodecContext *  avctx )

static

Definition at line 1265 of file vorbisenc.c.

Variable Documentation

ff_vorbis_encoder

const AVCodec ff_vorbis_encoder

Initial value:

= {
    .name           = "vorbis",
    .long_name      = NULL_IF_CONFIG_SMALL("Vorbis"),
    .type           = AVMEDIA_TYPE_AUDIO,
    .id             = AV_CODEC_ID_VORBIS,
    .priv_data_size = sizeof(vorbis_enc_context),
    .init           = vorbis_encode_init,
    .encode2        = vorbis_encode_frame,
    .close          = vorbis_encode_close,
    .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_EXPERIMENTAL,
    .sample_fmts    = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_FLTP,
                                                     AV_SAMPLE_FMT_NONE },
    .caps_internal  = FF_CODEC_CAP_INIT_THREADSAFE,
}

Definition at line 1300 of file vorbisenc.c.