gain_q.h

AMR-NB 的编码实现,纯C, VC下建立工程即可用.

#ifndef GAIN_Q_H
#define GAIN_Q_H

#include "AmrCode_Comm.h"
#include "qgain795.h"


int gainQuant_init (gainQuantState **st);
int gainQuant_reset (gainQuantState *st);
void gainQuant_exit (gainQuantState **st);
int gainQuant(gainQuantState *st, Mode mode, Word16 res[], Word16 exc[],Word16 code[],  Word16 xn[], 
    Word16 xn2[],  Word16 y1[],Word16 Y2[], Word16 g_coeff[],Word16 even_subframe,  Word16 gp_limit, 
    Word16 *sf0_gain_pit,  Word16 *sf0_gain_cod, Word16 *gain_pit, Word16 *gain_cod,   Word16 **anap );

void gc_pred(gc_predState *st, Mode mode, Word16 *code,Word16 *exp_gcode0, 
                        Word16 *frac_gcode0, Word16 *exp_en,  Word16 *frac_en  );
void gc_pred_average_limited(gc_predState *st, Word16 *ener_avg_MR122,Word16 *ener_avg  );
Word16 G_code ( Word16 xn[],  Word16 y2[]);

Word16 Qua_gain(  Mode mode,  Word16 exp_gcode0,Word16 frac_gcode0, 
    Word16 frac_coeff[],Word16 exp_coeff[], Word16 gp_limit, Word16 *gain_pit, 
    Word16 *gain_cod, Word16 *qua_ener_MR122, Word16 *qua_ener );

Word16 q_gain_code ( Mode mode,  Word16 exp_gcode0,  Word16 frac_gcode0,  Word16 *gain,   Word16 *qua_ener_MR122,     Word16 *qua_ener    );

void calc_filt_energies(Mode mode,  Word16 xn[],  Word16 xn2[],  Word16 y1[],   
    Word16 Y2[ ],    Word16 g_coeff[],  Word16 frac_coeff[],
    Word16 exp_coeff[], Word16 *cod_gain_frac,Word16 *cod_gain_exp);

#endif