lec_miket.h

The line echo canceller (LEC) is designed to provide the maximum attainable transparent voice qualit

/*------------------------------------------------------------------------*
*                                                                         *
*   THIS IS AN UNPUBLISHED WORK CONTAINING CONFIDENTIAL AND PROPRIETARY   *
*   INFORMATION.  IF PUBLICATION OCCURS, THE FOLLOWING NOTICE APPLIES:    *
*      "COPYRIGHT 2001 MIKET DSP SOLUTIONS, ALL RIGHTS RESERVED"          *
*                                                                         *
*-------------------------------------------------------------------------*/
#ifndef LEC_MIKET_
#define LEC_MIKET_

#include <std.h>                 
#include <ilec.h>

/* statistics */
/*
 Flags:
 0x0001: Adapt Active
 0x0002: SndOut Active
 0x0004: Rcv active
 0x0008: DT
 0x0010: Adapt Disabled by control
 0x0020: ERL Ok
 0x0040: Is Tone
 0x0080: Is Hi Tx
 0x0F00: NLP Mode
 0xF000: Adapt mode
 */
typedef struct LEC_MIKET_tStts {

    unsigned short uFlags;
    short sTxEn;
    short sRxInEn;
    short sErrEn;
    short sErl;
    short sErle;

} LEC_MIKET_tStts;

#define LEC_MIKET_DB_LSZ     (123)
#define LEC_MIKET_SC_LSZ     (234)
#define LEC_MIKET_HST_LSZ    (345)

typedef struct { long a[LEC_MIKET_DB_LSZ];} LEC_MIKET_tDb;
typedef struct { long a[LEC_MIKET_SC_LSZ];} LEC_MIKET_tSc;
typedef struct { long a[LEC_MIKET_HST_LSZ];} LEC_MIKET_tHst;

/*--------------------- public vars ---------------------------------------*/

extern const IALG_Fxns LEC_MIKET_IALG; 
extern const ILEC_Fxns LEC_MIKET_ILEC; 
extern const ILEC_tCfg ILEC_MIKET_DefaultCfg;

/*--------------------- local vars ----------------------------------------*/
/*--------------------- local functions -----------------------------------*/
/*--------------------- public  functions ---------------------------------*/
/*
 *  Required module finalization function : THIS FUNCTION IS EMPTY
 */
extern Void LEC_MIKET_exit(Void);

/*
 *  Required module initialization function: THIS FUNCTION IS EMPTY
 */
extern Void LEC_MIKET_init(Void);

/* ---- Native API ----- */


/*  Initialises database. (mem[1]) */
extern void LEC_MIKET_init_db (
    void *pDb, 
    const ILEC_tCfg *pCfg,
    Int *pHst
    );

/*  pCfg in pStatus can point to the same config data for any number of MF
    detector instances. 
    If RESET is not or-ed with OFF, the detector starts running.
    It is not recommened to apply OFF without RESET due to
    the obvious consequences of calling _control(pDb, 0); afterwards. 
    Asynchronous calling _control() and _process() from different tasks
    is not recommended. */
extern void LEC_MIKET_control(void *pDb, Int Cmd, ILEC_Status *pStatus );

extern void  LEC_MIKET_process
    (void *pDb, void *pSc, Int *pRcv, Int *pSnd, Int uIsTone);

#endif  /* LEC_MIKET_ */