vorbisenc.c File Reference

Native Vorbis encoder. More...

#include <float.h>
#include "avcodec.h"
#include "internal.h"
#include "fft.h"
#include "mathops.h"
#include "vorbis.h"
#include "vorbis_enc_data.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 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, float **audio, int samples)
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
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

#define BITSTREAM_WRITER_LE

Definition at line 36 of file vorbisenc.c.

#define MAX_CHANNELS   2

Definition at line 131 of file vorbisenc.c.

Referenced by residue_encode().

#define MAX_CODEBOOK_DIM   8

Definition at line 132 of file vorbisenc.c.

Referenced by residue_encode().

#define MAX_FLOOR_CLASS_DIM   4

Definition at line 134 of file vorbisenc.c.

#define NUM_FLOOR_PARTITIONS   8

Definition at line 135 of file vorbisenc.c.

Referenced by create_vorbis_context().

#define MAX_FLOOR_VALUES   (MAX_FLOOR_CLASS_DIM*NUM_FLOOR_PARTITIONS+2)

Definition at line 136 of file vorbisenc.c.

Referenced by floor_encode(), floor_fit(), and vorbis_encode_frame().

#define RESIDUE_SIZE   1600

Definition at line 138 of file vorbisenc.c.

#define RESIDUE_PART_SIZE   32

Definition at line 139 of file vorbisenc.c.

#define NUM_RESIDUE_PARTITIONS   (RESIDUE_SIZE/RESIDUE_PART_SIZE)

Definition at line 140 of file vorbisenc.c.

Referenced by residue_encode().

Function Documentation

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

inlinestatic

Definition at line 142 of file vorbisenc.c.

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

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

static

Definition at line 154 of file vorbisenc.c.

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

static int ready_codebook ( vorbis_enc_codebook *  cb )

static

Definition at line 163 of file vorbisenc.c.

Referenced by create_vorbis_context().

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

static

Definition at line 200 of file vorbisenc.c.

Referenced by create_vorbis_context().

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

static

Definition at line 239 of file vorbisenc.c.

Referenced by vorbis_encode_init().

static void put_float ( PutBitContext *  pb, float  f  )

static

Definition at line 440 of file vorbisenc.c.

Referenced by put_codebook_header().

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

static

Definition at line 454 of file vorbisenc.c.

Referenced by put_main_header().

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

static

Definition at line 519 of file vorbisenc.c.

Referenced by put_main_header().

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

static

Definition at line 552 of file vorbisenc.c.

Referenced by put_main_header().

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

static

Definition at line 584 of file vorbisenc.c.

Referenced by vorbis_encode_init().

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

static

Definition at line 716 of file vorbisenc.c.

Referenced by 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 728 of file vorbisenc.c.

Referenced by vorbis_encode_frame().

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

static

Definition at line 755 of file vorbisenc.c.

Referenced by 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 760 of file vorbisenc.c.

Referenced by vorbis_encode_frame().

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

static

Definition at line 849 of file vorbisenc.c.

Referenced by 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 872 of file vorbisenc.c.

Referenced by vorbis_encode_frame().

static int apply_window_and_mdct ( vorbis_enc_context *  venc, float **  audio, int  samples  )

static

Definition at line 967 of file vorbisenc.c.

Referenced by vorbis_encode_frame().

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

static

Definition at line 1018 of file vorbisenc.c.

static av_cold int vorbis_encode_close ( AVCodecContext *  avctx )

static

Definition at line 1104 of file vorbisenc.c.

Referenced by vorbis_encode_init().

static av_cold int vorbis_encode_init ( AVCodecContext *  avctx )

static

Definition at line 1163 of file vorbisenc.c.

Variable Documentation

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   = CODEC_CAP_DELAY | CODEC_CAP_EXPERIMENTAL,
    .sample_fmts    = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_FLTP,
                                                     AV_SAMPLE_FMT_NONE },
}

Definition at line 1195 of file vorbisenc.c.