/**************************************

		SV_AGC.h

***************************************/



#include "SV_common_include.h"



#define PEAKPreAGC_KNEETABLE_LEN	4

#define ATTACK_RELEASE_LEN			3

#define LONGTERMBUFLEN_MAX			200

#define DELAY_BUF_SIZE				4800

#define LOOKFORWARD_TIME			1

#define QGAIN_L						22

#define MAX_FS						48000



#define QINPCM						15

#define NOISEBITS					0

#define QTAU						(24-8)



typedef struct {

	int		*p_wrptr;

	int		dly;

	int		dly_buf[DELAY_BUF_SIZE];

}DelayBuf_T;



typedef struct{

	int			samplerate;



	int			lookForwardTime;

	int			kneeLen;



	int			xknee_tbl[PEAKPreAGC_KNEETABLE_LEN];

	int			yknee_tbl[PEAKPreAGC_KNEETABLE_LEN];



	float		attack_tbl[ATTACK_RELEASE_LEN];

	float		release_tbl[ATTACK_RELEASE_LEN];



	int			tau_attack;

	int			tau_release;



	int			gain_var;

	int			gain_dec_sm;

	int			gain_dec_sm_prev;



	int			longterm_idx;

	int			longtermBuflen;

	int			longtermVal;

	int			tau_attack_longterm;

	int			tau_release_longterm;

	INT64		longterm_buf[LONGTERMBUFLEN_MAX];



	DelayBuf_T	delay_buf_struct;

}SV_AGC_T;



// Processing

extern void SV_AGC_2ch_Exe(int* inout1, int* inout2, int n, SV_AGC_T* p_struct);

// inout - PCM data where AEC must be applied

// n - number of samples

// p_struct - pointer to the module structure



// Init

extern void SV_AGC_Init(int Fs, SV_AGC_T* p_struct);

// Fs - {8000, 16000}

// p_struct - pointer to the module structure (to be initialized)