nb_celp.c File Reference

#include <math.h>
#include "nb_celp.h"
#include "lpc.h"
#include "lsp.h"
#include "ltp.h"
#include "quant_lsp.h"
#include "cb_search.h"
#include "filters.h"
#include "stack_alloc.h"
#include "vq.h"
#include <speex/speex_bits.h>
#include "vbr.h"
#include "misc.h"
#include <speex/speex_callbacks.h>

Include dependency graph for nb_celp.c:

Defines
#define	M_PI   3.14159265358979323846
#define	NULL   0
#define	SUBMODE(x)   st->submodes[st->submodeID]->x
#define	NB_ENC_STACK   (8000*sizeof(spx_sig_t))
#define	NB_DEC_STACK   (4000*sizeof(spx_sig_t))
#define	LSP_MARGIN   .002
#define	LSP_DELTA1   .2
#define	LSP_DELTA2   .05
#define	EXTRA_BUFFER   0
#define	sqr(x)   ((x)*(x))
#define	median3(a, b, c)   ((a) < (b) ? ((b) < (c) ? (b) : ((a) < (c) ? (c) : (a))) : ((c) < (b) ? (b) : ((c) < (a) ? (c) : (a))))
Functions
void *	nb_encoder_init (const SpeexMode *m)
void	nb_encoder_destroy (void *state)
int	nb_encode (void *state, void *vin, SpeexBits *bits)
void *	nb_decoder_init (const SpeexMode *m)
void	nb_decoder_destroy (void *state)
int	nb_decode (void *state, SpeexBits *bits, void *vout)
int	nb_encoder_ctl (void *state, int request, void *ptr)
int	nb_decoder_ctl (void *state, int request, void *ptr)
Variables
const float	exc_gain_quant_scal3_bound [7] = {0.112338, 0.236980, 0.369316, 0.492054, 0.637471, 0.828874, 1.132784}
const float	exc_gain_quant_scal3 [8] = {0.061130, 0.163546, 0.310413, 0.428220, 0.555887, 0.719055, 0.938694, 1.326874}
const float	exc_gain_quant_scal1_bound [1] = {0.87798}
const float	exc_gain_quant_scal1 [2] = {0.70469, 1.05127}
const spx_word16_t	attenuation [10] = {1., 0.961, 0.852, 0.698, 0.527, 0.368, 0.237, 0.141, 0.077, 0.039}

---

Define Documentation

#define EXTRA_BUFFER   0

#define LSP_DELTA1   .2

#define LSP_DELTA2   .05

#define LSP_MARGIN   .002

#define M_PI   3.14159265358979323846

#define median3	(	a,
		b,
		c		)	((a) < (b) ? ((b) < (c) ? (b) : ((a) < (c) ? (c) : (a))) : ((c) < (b) ? (b) : ((c) < (a) ? (c) : (a))))

#define NB_DEC_STACK   (4000*sizeof(spx_sig_t))

#define NB_ENC_STACK   (8000*sizeof(spx_sig_t))

#define NULL   0

#define sqr

(

x

)

((x)*(x))

#define SUBMODE

(

x

)

st->submodes[st->submodeID]->x

---

Function Documentation

int nb_decode	(	void *	state,
		SpeexBits *	bits,
		void *	out
	)

Decodes one frame

int nb_decoder_ctl	(	void *	state,
		int	request,
		void *	ptr
	)

ioctl-like function for controlling a narrowband decoder

void nb_decoder_destroy

(

void *

state

)

De-allocates decoder state resources

void* nb_decoder_init

(

const SpeexMode *

m

)

Initializes decoder state

int nb_encode	(	void *	state,
		void *	in,
		SpeexBits *	bits
	)

Encodes one frame

int nb_encoder_ctl	(	void *	state,
		int	request,
		void *	ptr
	)

ioctl-like function for controlling a narrowband encoder

void nb_encoder_destroy

(

void *

state

)

De-allocates encoder state resources

void* nb_encoder_init

(

const SpeexMode *

m

)

Initializes encoder state

---

Variable Documentation

const spx_word16_t attenuation[10] = {1., 0.961, 0.852, 0.698, 0.527, 0.368, 0.237, 0.141, 0.077, 0.039}

const float exc_gain_quant_scal1[2] = {0.70469, 1.05127}

const float exc_gain_quant_scal1_bound[1] = {0.87798}

const float exc_gain_quant_scal3[8] = {0.061130, 0.163546, 0.310413, 0.428220, 0.555887, 0.719055, 0.938694, 1.326874}

const float exc_gain_quant_scal3_bound[7] = {0.112338, 0.236980, 0.369316, 0.492054, 0.637471, 0.828874, 1.132784}

---