opus_celt.h File Reference

#include <float.h>
#include "opus.h"
#include "opus_pvq.h"
#include "mdct15.h"
#include "libavutil/float_dsp.h"
#include "libavutil/libm.h"

Go to the source code of this file.

Data Structures
struct	CeltBlock
struct	CeltFrame

Macros
#define	CELT_VECTORS   11
#define	CELT_ALLOC_STEPS   6
#define	CELT_FINE_OFFSET   21
#define	CELT_MAX_FINE_BITS   8
#define	CELT_NORM_SCALE   16384
#define	CELT_QTHETA_OFFSET   4
#define	CELT_QTHETA_OFFSET_TWOPHASE   16
#define	CELT_EMPH_COEFF   0.85000610f
#define	CELT_POSTFILTER_MINPERIOD   15
#define	CELT_ENERGY_SILENCE   (-28.0f)

Enumerations
enum	CeltSpread { CELT_SPREAD_NONE, CELT_SPREAD_LIGHT, CELT_SPREAD_NORMAL, CELT_SPREAD_AGGRESSIVE }
enum	CeltBlockSize {   CELT_BLOCK_120, CELT_BLOCK_240, CELT_BLOCK_480, CELT_BLOCK_960,   CELT_BLOCK_NB }

Functions
static av_always_inline uint32_t	celt_rng (CeltFrame *f)
static av_always_inline void	celt_renormalize_vector (float *X, int N, float gain)
int	ff_celt_init (AVCodecContext *avctx, CeltFrame **f, int output_channels, int apply_phase_inv)
void	ff_celt_free (CeltFrame **f)
void	ff_celt_flush (CeltFrame *f)
int	ff_celt_decode_frame (CeltFrame *f, OpusRangeCoder *rc, float **output, int coded_channels, int frame_size, int startband, int endband)

Macro Definition Documentation

CELT_VECTORS

#define CELT_VECTORS   11

Definition at line 36 of file opus_celt.h.

Referenced by ff_celt_bitalloc().

CELT_ALLOC_STEPS

#define CELT_ALLOC_STEPS   6

Definition at line 37 of file opus_celt.h.

Referenced by ff_celt_bitalloc().

CELT_FINE_OFFSET

#define CELT_FINE_OFFSET   21

Definition at line 38 of file opus_celt.h.

Referenced by ff_celt_bitalloc().

CELT_MAX_FINE_BITS

#define CELT_MAX_FINE_BITS   8

Definition at line 39 of file opus_celt.h.

Referenced by celt_decode_final_energy(), celt_quant_final(), and ff_celt_bitalloc().

CELT_NORM_SCALE

#define CELT_NORM_SCALE   16384

Definition at line 40 of file opus_celt.h.

CELT_QTHETA_OFFSET

#define CELT_QTHETA_OFFSET   4

Definition at line 41 of file opus_celt.h.

Referenced by quant_band_template().

CELT_QTHETA_OFFSET_TWOPHASE

#define CELT_QTHETA_OFFSET_TWOPHASE   16

Definition at line 42 of file opus_celt.h.

Referenced by quant_band_template().

CELT_EMPH_COEFF

#define CELT_EMPH_COEFF   0.85000610f

Definition at line 43 of file opus_celt.h.

Referenced by celt_apply_preemph_filter(), and ff_celt_decode_frame().

CELT_POSTFILTER_MINPERIOD

#define CELT_POSTFILTER_MINPERIOD   15

Definition at line 44 of file opus_celt.h.

Referenced by celt_enc_quant_pfilter(), and parse_postfilter().

CELT_ENERGY_SILENCE

#define CELT_ENERGY_SILENCE   (-28.0f)

Definition at line 45 of file opus_celt.h.

Referenced by celt_frame_mdct(), ff_celt_decode_frame(), and ff_celt_flush().

Enumeration Type Documentation

CeltSpread

enum CeltSpread

Enumerator
CELT_SPREAD_NONE
CELT_SPREAD_LIGHT
CELT_SPREAD_NORMAL
CELT_SPREAD_AGGRESSIVE

Definition at line 49 of file opus_celt.h.

CeltBlockSize

enum CeltBlockSize

Enumerator
CELT_BLOCK_120
CELT_BLOCK_240
CELT_BLOCK_480
CELT_BLOCK_960
CELT_BLOCK_NB

Definition at line 56 of file opus_celt.h.

Function Documentation

celt_rng()

static av_always_inline uint32_t celt_rng ( CeltFrame *  f )

static

Definition at line 142 of file opus_celt.h.

Referenced by process_anticollapse(), and quant_band_template().

celt_renormalize_vector()

static av_always_inline void celt_renormalize_vector ( float *  X, int  N, float  gain  )

static

Definition at line 148 of file opus_celt.h.

Referenced by process_anticollapse(), and quant_band_template().

ff_celt_init()

int ff_celt_init	(	AVCodecContext *	avctx,
		CeltFrame **	f,
		int	output_channels,
		int	apply_phase_inv
	)

Definition at line 566 of file opus_celt.c.

Referenced by celt_renormalize_vector(), and opus_decode_init().

ff_celt_free()

void ff_celt_free

(

CeltFrame **

f

)

Definition at line 549 of file opus_celt.c.

Referenced by celt_renormalize_vector(), ff_celt_init(), and opus_decode_close().

ff_celt_flush()

void ff_celt_flush

(

CeltFrame *

f

)

Definition at line 522 of file opus_celt.c.

Referenced by celt_renormalize_vector(), ff_celt_init(), opus_decode_flush(), and opus_decode_frame().

ff_celt_decode_frame()

int ff_celt_decode_frame	(	CeltFrame *	f,
		OpusRangeCoder *	rc,
		float **	output,
		int	coded_channels,
		int	frame_size,
		int	startband,
		int	endband
	)

Definition at line 347 of file opus_celt.c.

Referenced by celt_renormalize_vector(), opus_decode_frame(), and opus_decode_redundancy().