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Data Structures | Macros | Functions | Variables
vorbisenc.c File Reference

Native Vorbis encoder. More...

#include <float.h>
#include "libavutil/float_dsp.h"
#include "libavutil/mem.h"
#include "libavutil/tx.h"
#include "avcodec.h"
#include "codec_internal.h"
#include "encode.h"
#include "mathops.h"
#include "vorbis.h"
#include "vorbis_data.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 FFCodec 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 43 of file vorbisenc.c.

◆ MAX_CHANNELS

#define MAX_CHANNELS   2

Definition at line 145 of file vorbisenc.c.

◆ MAX_CODEBOOK_DIM

#define MAX_CODEBOOK_DIM   8

Definition at line 146 of file vorbisenc.c.

Referenced by residue_encode().

◆ MAX_FLOOR_CLASS_DIM

#define MAX_FLOOR_CLASS_DIM   4

Definition at line 148 of file vorbisenc.c.

◆ NUM_FLOOR_PARTITIONS

#define NUM_FLOOR_PARTITIONS   8

Definition at line 149 of file vorbisenc.c.

Referenced by create_vorbis_context().

◆ MAX_FLOOR_VALUES

#define MAX_FLOOR_VALUES   (MAX_FLOOR_CLASS_DIM*NUM_FLOOR_PARTITIONS+2)

Definition at line 150 of file vorbisenc.c.

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

◆ RESIDUE_SIZE

#define RESIDUE_SIZE   1600

Definition at line 152 of file vorbisenc.c.

◆ RESIDUE_PART_SIZE

#define RESIDUE_PART_SIZE   32

Definition at line 153 of file vorbisenc.c.

◆ NUM_RESIDUE_PARTITIONS

#define NUM_RESIDUE_PARTITIONS   (RESIDUE_SIZE/RESIDUE_PART_SIZE)

Definition at line 154 of file vorbisenc.c.

Referenced by residue_encode().

Function Documentation

◆ put_codeword()

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

Definition at line 156 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 168 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 177 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 214 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 253 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 276 of file vorbisenc.c.

Referenced by vorbis_encode_init().

◆ put_float()

static void put_float ( PutBitContext * pb,
float f )
static

Definition at line 481 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 495 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 560 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 593 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 625 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 762 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 774 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 801 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 806 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 895 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 918 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 1013 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 1039 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 1065 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 1099 of file vorbisenc.c.

◆ vorbis_encode_close()

static av_cold int vorbis_encode_close ( AVCodecContext * avctx)
static

Definition at line 1215 of file vorbisenc.c.

◆ vorbis_encode_init()

static av_cold int vorbis_encode_init ( AVCodecContext * avctx)
static

Definition at line 1276 of file vorbisenc.c.

Variable Documentation

◆ ff_vorbis_encoder

const FFCodec ff_vorbis_encoder
Initial value:
= {
.p.name = "vorbis",
CODEC_LONG_NAME("Vorbis"),
.p.type = AVMEDIA_TYPE_AUDIO,
.p.id = AV_CODEC_ID_VORBIS,
.p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY |
AV_CODEC_CAP_EXPERIMENTAL,
.priv_data_size = sizeof(vorbis_enc_context),
.init = vorbis_encode_init,
FF_CODEC_ENCODE_CB(vorbis_encode_frame),
.close = vorbis_encode_close,
CODEC_SAMPLEFMTS(AV_SAMPLE_FMT_FLTP),
.caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
}
FF_CODEC_ENCODE_CB
#define FF_CODEC_ENCODE_CB(func)
Definition codec_internal.h:386
CODEC_LONG_NAME
#define CODEC_LONG_NAME(str)
Definition codec_internal.h:359
FF_CODEC_CAP_INIT_CLEANUP
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
Definition codec_internal.h:43
CODEC_SAMPLEFMTS
#define CODEC_SAMPLEFMTS(...)
Definition codec_internal.h:405
init
int(* init)(AVBSFContext *ctx)
Definition dts2pts.c:608
AV_CODEC_CAP_DELAY
#define AV_CODEC_CAP_DELAY
Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...
Definition codec.h:79
AV_CODEC_CAP_DR1
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
Definition codec.h:49
AV_CODEC_CAP_EXPERIMENTAL
#define AV_CODEC_CAP_EXPERIMENTAL
Codec is experimental and is thus avoided in favor of non experimental encoders.
Definition codec.h:90
AV_CODEC_ID_VORBIS
@ AV_CODEC_ID_VORBIS
Definition codec_id.h:458
AVMEDIA_TYPE_AUDIO
@ AVMEDIA_TYPE_AUDIO
Definition avutil.h:201
AV_SAMPLE_FMT_FLTP
@ AV_SAMPLE_FMT_FLTP
float, planar
Definition samplefmt.h:66
vorbis_enc_context
Definition vorbisenc.c:107
vorbis_encode_close
static av_cold int vorbis_encode_close(AVCodecContext *avctx)
Definition vorbisenc.c:1215
vorbis_encode_init
static av_cold int vorbis_encode_init(AVCodecContext *avctx)
Definition vorbisenc.c:1276
vorbis_encode_frame
static int vorbis_encode_frame(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr)
Definition vorbisenc.c:1099

Definition at line 1308 of file vorbisenc.c.

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