libavcodec/sipr16k.c File Reference

#include <math.h>
#include "sipr.h"
#include "libavutil/mathematics.h"
#include "lsp.h"
#include "celp_math.h"
#include "acelp_vectors.h"
#include "acelp_pitch_delay.h"
#include "acelp_filters.h"
#include "celp_filters.h"
#include "sipr16kdata.h"

Go to the source code of this file.

Defines
#define	DIVIDE_BY_3(x)   ((x) * 10923 >> 15)
Functions
static void	lsf2lsp (const float *lsf, double *lsp)
	Convert an lsf vector into an lsp vector.
static void	dequant (float *out, const int *idx, const float *cbs[])
static void	lsf_decode_fp_16k (float *lsf_history, float *isp_new, const int *parm, int ma_pred)
static int	dec_delay3_1st (int index)
static int	dec_delay3_2nd (int index, int pit_min, int pit_max, int pitch_lag_prev)
static void	postfilter (float *out_data, float *synth, float *iir_mem, float *filt_mem[2], float *mem_preemph)
static void	acelp_lp_decodef (float *lp_1st, float *lp_2nd, const double *lsp_2nd, const double *lsp_prev)
	Floating point version of ff_acelp_lp_decode().
static float	acelp_decode_gain_codef (float gain_corr_factor, const float *fc_v, float mr_energy, const float *quant_energy, const float *ma_prediction_coeff, int subframe_size, int ma_pred_order)
	Floating point version of ff_acelp_decode_gain_code().
void	ff_sipr_decode_frame_16k (SiprContext *ctx, SiprParameters *params, float *out_data)
void	ff_sipr_init_16k (SiprContext *ctx)

---

Define Documentation

#define DIVIDE_BY_3

(

x

)

((x) * 10923 >> 15)

Definition at line 172 of file sipr16k.c.

Referenced by ff_sipr_decode_frame_16k().

---

Function Documentation

static float acelp_decode_gain_codef	(	float	gain_corr_factor,
		const float *	fc_v,
		float	mr_energy,
		const float *	quant_energy,
		const float *	ma_prediction_coeff,
		int	subframe_size,
		int	ma_pred_order
	)			[static]

Floating point version of ff_acelp_decode_gain_code().

Definition at line 159 of file sipr16k.c.

Referenced by ff_sipr_decode_frame_16k().

static void acelp_lp_decodef	(	float *	lp_1st,
		float *	lp_2nd,
		const double *	lsp_2nd,
		const double *	lsp_prev
	)			[static]

Floating point version of ff_acelp_lp_decode().

Definition at line 140 of file sipr16k.c.

Referenced by ff_sipr_decode_frame_16k().

static int dec_delay3_1st

(

int

index

)

[static]

Definition at line 78 of file sipr16k.c.

Referenced by ff_sipr_decode_frame_16k().

static int dec_delay3_2nd	(	int	index,
		int	pit_min,
		int	pit_max,
		int	pitch_lag_prev
	)			[static]

Definition at line 86 of file sipr16k.c.

Referenced by ff_sipr_decode_frame_16k().

static void dequant	(	float *	out,
		const int *	idx,
		const float *	cbs[]
	)			[static]

Definition at line 51 of file sipr16k.c.

void ff_sipr_decode_frame_16k	(	SiprContext *	ctx,
		SiprParameters *	params,
		float *	out_data
	)

Definition at line 174 of file sipr16k.c.

Referenced by sipr_decoder_init().

void ff_sipr_init_16k

(

SiprContext *

ctx

)

Definition at line 269 of file sipr16k.c.

Referenced by sipr_decoder_init().

static void lsf2lsp	(	const float *	lsf,
		double *	lsp
	)			[static]

Convert an lsf vector into an lsp vector.

Parameters:

	lsf	input lsf vector
	lsp	output lsp vector

Definition at line 43 of file sipr16k.c.

Referenced by ff_sipr_decode_frame_16k().

static void lsf_decode_fp_16k	(	float *	lsf_history,
		float *	isp_new,
		const int *	parm,
		int	ma_pred
	)			[static]

Definition at line 61 of file sipr16k.c.

Referenced by ff_sipr_decode_frame_16k().

static void postfilter	(	float *	out_data,
		float *	synth,
		float *	iir_mem,
		float *	filt_mem[2],
		float *	mem_preemph
	)			[static]

Definition at line 97 of file sipr16k.c.