g729bc.h

语音编码G.729 语音编码G.729

/*-----------------------------------------------------------*
 * g729bc.h - include file for G.729A/B 8.0 kb/s codec       *
 *-----------------------------------------------------------*/

#ifndef _G729BC_H_INCL_
#define _G729BC_H_INCL_

#include "typedef.h"
#include "cst_ld8c.h"

#define G729_SID_FRAME_SIZE       2
#define G729_VOICE_D_FRAME_SIZE   8
#define G729_VOICE_FRAME_SIZE    10
#define G729_VOICE_E_FRAME_SIZE  15

#define G729_TYPE_DONTSEND	0x0
#define G729_TYPE_SID		0x2
//#define G729_TYPE_VOICE_D	0x2
#define G729_TYPE_VOICE		0x1
//#define G729_TYPE_VOICE_E	0x4

struct cod_state
{
	struct cod_state_t cod_s;
	struct preproc_state_t preproc_s;

	int frame;                  /* frame counter */
	/* For G.729B */
	int vad_enable;
};

struct dec_state
{
	struct dec_state_t dec_s;
	struct preproc_state_t postproc_s;
	struct postfilt_state_t postfilt_s;

	FLOAT  synth_buf[M+L_FRAME];        /* Synthesis                   */
	FLOAT  *synth;

	int   voicing;                      /* voicing from previous frame */
	int   sf_voic;                      /* voicing for subframe        */
};


void g729_init_coder(struct cod_state *, int vad_enable);
int  g729_coder(struct cod_state *, INT16 *DataBuff, char *Vout, int* poutlen);

void g729_init_decoder(struct dec_state *);
int  g729_decoder(struct dec_state *, INT16 *DataBuff, char *Vinp, int inplen);

void g729_line_pack(int* prm, unsigned char *Vout, int* poutlen);
void g729_line_unpack(int* prm, unsigned char *Vinp, int Ftyp);

#endif /* _G729BC_H_INCL_ */