// Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

//

#ifndef __GSM610FR__

#define __GSM610FR__

//  INCLUDES

#include <e32base.h>

#include "rpeltp.h"

// DEFINES

#define PACKSIZE 65 // Size of one bit packed block (2 frames)

//  CLASS DEFINITIONS

/*

-----------------------------------------------------------------------------

    CGSM610FR_Encoder

    GSM 6.10 full rate (FR) speech encoder.

-----------------------------------------------------------------------------

*/

class CGSM610FR_Encoder

    {

public:

    IMPORT_C void ConstructL();

    IMPORT_C ~CGSM610FR_Encoder();

    IMPORT_C void StartL();

    IMPORT_C void ExecuteL(TUint8* aInBuf, TUint8* OutBuf);

    IMPORT_C void StopL();

private:

    void PackFrame0(struct codes* aCodeBuf, TInt8* pbuf);

    void PackFrame1(struct codes* aCodeBuf, TInt8* pbuf);

private:

    struct codes iCodeBuf;       // buffer for speech codewords, one frame

    TBool iOddFrame;              // is the current frame odd or even frame?

private:

    friend void reset_encoder(CGSM610FR_Encoder* aEncoder);

    friend void prepr(CGSM610FR_Encoder* aEncoder, int2 sof[], int2 so[]);

    friend void preemp(CGSM610FR_Encoder* aEncoder, int2 s[], int2 sof[]);

    friend void ltpcomp(CGSM610FR_Encoder* aEncoder, int2 *Nc, int2 *bc, int2 d[], int k_start);

    friend void ltpfil(CGSM610FR_Encoder* aEncoder, int2 e[], int2 dpp[], int2 d[], int2 bc, int2 Nc, int k_start);

    friend void ltpupd( CGSM610FR_Encoder* aEncoder, int2 dpp[], int2 ep[] );

    friend void LPC_analysis(CGSM610FR_Encoder* aEncoder, int2 ibuf[], struct codes *ecodes);

    friend void invfil(CGSM610FR_Encoder* aEncoder, int2 d[], int2 s[], int2 rp[], int k_start, int k_end);

private:

    int2 z1;            /* delay 1 of offset comp */

    int4 L_z2;          /* delay 2 of offset comp */

    int2 mp;            /* delay of preemphasis */

    int2 u[8];          /* LPC analysis filter delay */

    int2 dp[120];       /* Encoder LTP delay */

    int2 LARpp_prev[8]; /* Encoder LARs of the prev frame */

    };

/*

-----------------------------------------------------------------------------

    CGSM610FR_Decoder

    GSM 6.10 full rate (FR) speech decoder.

-----------------------------------------------------------------------------

*/

class CGSM610FR_Decoder

    {

public:

   IMPORT_C void ConstructL();

   IMPORT_C ~CGSM610FR_Decoder();

   IMPORT_C void StartL();

   IMPORT_C void ExecuteL(TUint8* aSrc, TUint8* aDst);

   IMPORT_C void StopL();

private:

    void UnpackFrame0(struct codes* aCodeBuf, TInt8* pbuf);

    void UnpackFrame1(struct codes* aCodeBuf, TInt8* pbuf);

private:

    struct codes iCodeBuf;       // buffer for speech codewords, one frame

    TBool iOddFrame;             // is the current frame odd or even frame?

private:

    friend void reset_decoder(CGSM610FR_Decoder* aDecoder);

    friend void ltpsyn(CGSM610FR_Decoder* aDecoder, int2 erp[], int2 wt[], int2 bcr, int2 Ncr);

    friend void postpr(CGSM610FR_Decoder* aDecoder, int2 srop[], int2 sr[]);

    friend void LPC_synthesis(CGSM610FR_Decoder* aDecoder, struct codes *dcodes, int2 wt[], int2 obuf[]);

    friend void synfil(CGSM610FR_Decoder* aDecoder, int2 sr[], int2 wt[], int2 rrp[], int k_start, int k_end);

private:

    int2 msr;            /* de emphasis delay */

    int2 v[9];           /* LPC synthesis filter delay */

    int2 drp[120];       /* Decoder LTP delay */

    int2 nrp;            /* LTP delay of the previous frame */

    int2 LARrpp_prev[8]; /* Decoder LARs of the prev frame */

    };

#endif //__GSM610FR__

//-----------------------------------------------------------------------------

//  End of File

//-----------------------------------------------------------------------------