// 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

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