dec_gain.h

来自「ffmpeg源码分析」· C头文件 代码 · 共 29 行

/*
 *===================================================================
 *  3GPP AMR Wideband Floating-point Speech Codec
 *===================================================================
 */
#ifndef DEC_GAIN_H
#define DEC_GAIN_H

#include "typedef.h"

void D_GAIN_init(Word16 *mem);
void D_GAIN_decode(Word16 index, Word16 nbits, Word16 code[], Word16 *gain_pit,
                   Word32 *gain_cod, Word16 bfi, Word16 prev_bfi,
                   Word16 state, Word16 unusable_frame, Word16 vad_hist,
                   Word16 *mem);
void D_GAIN_adaptive_control(Word16 *sig_in, Word16 *sig_out, Word16 l_trm);
void D_GAIN_lag_concealment_init(Word16 lag_hist[]);
void D_GAIN_lag_concealment(Word16 gain_hist[], Word16 lag_hist[], Word32 *T0,
                            Word16 *old_T0, Word16 *seed,
                            Word16 unusable_frame);
void D_GAIN_adaptive_codebook_excitation(Word16 exc[], Word32 T0, Word32 frac);
void D_GAIN_pitch_sharpening(Word16 *x, Word32 pit_lag, Word16 sharp);
Word16 D_GAIN_find_voice_factor(Word16 exc[], Word16 Q_exc, Word16 gain_pit,
                               Word16 code[], Word16 gain_code,
                               Word16 L_subfr);

#endif