imaalgorith.h

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//==========================================================================;
//
//  THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY
//  KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
//  IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR
//  PURPOSE.
//
//  Copyright (c) 1992-1994 G&G Lab Corporation
//
//--------------------------------------------------------------------------;
//
//  IMAAlgorith.h
//
//  Description:
//      This file contains prototypes for the filtering routines.
//
//
//==========================================================================;

#ifndef _IMAALGORITH_H_
#define _IMAALGORITH_H_

#ifndef RC_INVOKED
#pragma pack(1)                     // assume byte packing throughout
#endif

#ifndef EXTERN_C
#ifdef __cplusplus
    #define EXTERN_C extern "C"
#else
    #define EXTERN_C extern 
#endif
#endif

#ifdef __cplusplus
extern "C"                          // assume C declarations for C++
{
#endif


//
//
//
//
#define IMAALGORITH_MAX_CHANNELS       2
#define IMAALGORITH_BITS_PER_SAMPLE    4
#define IMAALGORITH_WFX_EXTRA_BYTES    (sizeof(IMAALGORITHWAVEFORMAT) - sizeof(WAVEFORMATEX))
#define IMAALGORITH_HEADER_LENGTH      4    // In bytes, per channel.

#ifdef IMAALGORITH_USECONFIGUR
#define IMAALGORITH_CONFIGURTESTTIME     4   // seconds of PCM data for test.
#define IMAALGORITH_CONFIGUR_DEFAULT                             0x0000
#define IMAALGORITH_CONFIGUR_DEFAULT_MAXRTENCODESETTING          5
#define IMAALGORITH_CONFIGUR_DEFAULT_MAXRTDECODESETTING          6
#define IMAALGORITH_CONFIGUR_UNCONFIGURURED                        0x0999
#define IMAALGORITH_CONFIGUR_DEFAULT_PERCENTCPU	        	    50
#define IMAALGORITH_CONFIGUR_TEXTLEN                             80
#define IMAALGORITH_CONFIGUR_DEFAULTKEY                          HKEY_CURRENT_USER
#endif


//
//  Conversion function prototypes.
//
DWORD FNGLOBAL IMAAlgorithDecode4Bit_M08
(
    HPBYTE                  pbSrc,
    DWORD                   cbSrcLength,
    HPBYTE                  pbDst,
    UINT                    nBlockAlignment,
    UINT                    cSamplesPerBlock,
    int                 *   pnStepIndexL,
    int                 *   pnStepIndexR
);

DWORD FNGLOBAL IMAAlgorithDecode4Bit_M16
(
    HPBYTE                  pbSrc,
    DWORD                   cbSrcLength,
    HPBYTE                  pbDst,
    UINT                    nBlockAlignment,
    UINT                    cSamplesPerBlock,
    int                 *   pnStepIndexL,
    int                 *   pnStepIndexR
);

DWORD FNGLOBAL IMAAlgorithDecode4Bit_S08
(
    HPBYTE                  pbSrc,
    DWORD                   cbSrcLength,
    HPBYTE                  pbDst,
    UINT                    nBlockAlignment,
    UINT                    cSamplesPerBlock,
    int                 *   pnStepIndexL,
    int                 *   pnStepIndexR
);

DWORD FNGLOBAL IMAAlgorithDecode4Bit_S16
(
    HPBYTE                  pbSrc,
    DWORD                   cbSrcLength,
    HPBYTE                  pbDst,
    UINT                    nBlockAlignment,
    UINT                    cSamplesPerBlock,
    int                 *   pnStepIndexL,
    int                 *   pnStepIndexR
);

DWORD FNGLOBAL IMAAlgorithEncode4Bit_M08
(
    HPBYTE                  pbSrc,
    DWORD                   cbSrcLength,
    HPBYTE                  pbDst,
    UINT                    nBlockAlignment,
    UINT                    cSamplesPerBlock,
    int                 *   pnStepIndexL,
    int                 *   pnStepIndexR
);

DWORD FNGLOBAL IMAAlgorithEncode4Bit_M16
(
    HPBYTE                  pbSrc,
    DWORD                   cbSrcLength,
    HPBYTE                  pbDst,
    UINT                    nBlockAlignment,
    UINT                    cSamplesPerBlock,
    int                 *   pnStepIndexL,
    int                 *   pnStepIndexR
);

DWORD FNGLOBAL IMAAlgorithEncode4Bit_S08
(
    HPBYTE                  pbSrc,
    DWORD                   cbSrcLength,
    HPBYTE                  pbDst,
    UINT                    nBlockAlignment,
    UINT                    cSamplesPerBlock,
    int                 *   pnStepIndexL,
    int                 *   pnStepIndexR
);

DWORD FNGLOBAL IMAAlgorithEncode4Bit_S16
(
    HPBYTE                  pbSrc,
    DWORD                   cbSrcLength,
    HPBYTE                  pbDst,
    UINT                    nBlockAlignment,
    UINT                    cSamplesPerBlock,
    int                 *   pnStepIndexL,
    int                 *   pnStepIndexR
);


//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ; 
//
//
//
//- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ; 

#ifndef RC_INVOKED
#pragma pack()                      // revert to default packing
#endif

#ifdef __cplusplus
}                                   // end of extern "C" { 
#endif

#endif // _IMAALGORITH_H_