/*

* Copyright (c) 2008 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:    

*

*/

#include "mceamrcodec.h"

#include "mcecomamrcodec.h"

#ifdef MCE_COMMON_SERVER_SIDE

#include <mmcccodecinformation.h>

_LIT8( KDefaultAmrFmtp, "octet-align=0; mode-set=0,1,2,3,4,5,6,7" );

#endif//MCE_COMMON_SERVER_SIDE

const TUint KMceAmrFrameTime( 20 );

// ============================ MEMBER FUNCTIONS ===============================

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

// CMceComAMRCodec::NewL

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

//

CMceComAMRCodec* CMceComAMRCodec::NewL( TBuf8<KMceMaxSdpNameLength> aSdpName )

    {

    CMceComAMRCodec* self = NewLC( aSdpName );

    CleanupStack::Pop( self );

    return self;

    }

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

// CMceComAMRCodec::NewLC

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

//

CMceComAMRCodec* CMceComAMRCodec::NewLC( TBuf8<KMceMaxSdpNameLength> aSdpName )

    {

    CMceComAMRCodec* self = new (ELeave) CMceComAMRCodec();

    CleanupStack::PushL( self );

    self->ConstructL( aSdpName );

    return self;

    }

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

// CMceComAMRCodec::~CMceComAMRCodec

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

//

CMceComAMRCodec::~CMceComAMRCodec()

    {

    }

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

// CMceComAMRCodec::CMceComAMRCodec

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

//

CMceComAMRCodec::CMceComAMRCodec()

 : CMceComAudioCodec()

    {

    iFourCC = 0;

    iEnableVAD = EFalse;

	iSamplingFreq = KMceAmrNbSamplingFreq;

	iPTime = KMceDefaultPtime;

	iMaxPTime = KMceDefaultMaxPtime;

	iBitrate = KMceAmrNbBitrate122;	

	iAllowedBitrates = KMceAllowedAmrNbBitrate475|

					   KMceAllowedAmrNbBitrate515|

					   KMceAllowedAmrNbBitrate590|

					   KMceAllowedAmrNbBitrate670|

					   KMceAllowedAmrNbBitrate740|

					   KMceAllowedAmrNbBitrate795|

					   KMceAllowedAmrNbBitrate102|

					   KMceAllowedAmrNbBitrate122;

    const TUint8 KMceDefaultAmrPayloadType = 96;

	iPayloadType = KMceDefaultAmrPayloadType;

	iCodecMode = EMceBandwidthEfficient;    

    iFrameSize = KMceAmrFrameTime;

    }

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

// CMceComAMRCodec::CloneL

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

//

CMceComAudioCodec* CMceComAMRCodec::CloneL()

    {

    CMceComAMRCodec* copy = new (ELeave) CMceComAMRCodec();

    CleanupStack::PushL( copy );

    copy->ConstructL( *this );

    CleanupStack::Pop( copy );

    return copy;

    }

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

// CMceComAMRCodec::ConstructL

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

//

void CMceComAMRCodec::ConstructL( TBuf8<KMceMaxSdpNameLength> aSdpName )

    {

    CMceComAudioCodec::ConstructL( aSdpName );

    }

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

// CMceComAMRCodec::ConstructL

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

//

void CMceComAMRCodec::ConstructL( CMceComAMRCodec& aCodec )

    {

    CMceComAudioCodec::ConstructL( aCodec );

    }

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

// CMceComAMRCodec::SetBitrate

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

//

TInt CMceComAMRCodec::SetBitrate( TUint aBitrate )

    {

	TBool isValid = ETrue;

    switch ( aBitrate )

    	{

    	case KMceAmrNbBitrate475:

    	case KMceAmrNbBitrate515:

    	case KMceAmrNbBitrate590:

    	case KMceAmrNbBitrate670:

    	case KMceAmrNbBitrate740:

    	case KMceAmrNbBitrate795:

    	case KMceAmrNbBitrate102:

    	case KMceAmrNbBitrate122:

    	    {

    	    if ( aBitrate > GetMaxBitRate() )

    	        {

        		isValid = EFalse;

    	        }

    	    break;

    	    }

    	default:

    		isValid = EFalse;

    		break;

    	}

    if ( isValid )

    	{

        return CMceComCodec::SetBitrate( aBitrate );

    	}

    else

    	{

    	return KErrNotSupported;

    	}

    }

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

// CMceComAMRCodec::SetAllowedBitrates

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

//

TInt CMceComAMRCodec::SetAllowedBitrates( TUint aBitrates )

    {

    TInt error = KErrNone;

    //Confirm that the bitrate mask is valid

    //I.e. after all the valid bitrates are set to zero the value should be zero

    if ( !aBitrates || 

        ( aBitrates >> 12 ) > 0 ) 

        {

        error = KErrArgument;

        }

    else

        {

        CMceComCodec::SetAllowedBitrates( KMceAllowedAmrNbBitrateAll );

        iAllowedBitrates &= aBitrates;

        TUint maxBitrate = GetMaxBitRate();

        if ( iBitrate > maxBitrate )

            {

            error = CMceComCodec::SetBitrate( maxBitrate );

            } 

        // Update also other amr codec information stored inside

        // allowed bitrates mask

        const TUint KMceOtherInfoMask = 0x0F00;

        iAllowedBitrates |= ( aBitrates & KMceOtherInfoMask );

        }

    return error;

    }

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

// CMceComAMRCodec::SetCodecMode

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

//

TInt CMceComAMRCodec::SetCodecMode( TUint aCodecMode )

    {

    if ( EMceBandwidthEfficient == aCodecMode || EMceOctetAligned == aCodecMode )

        {

        iCodecMode = aCodecMode;

        return KErrNone;

        }

    else

        {

        return KErrNotSupported;

        }

    }

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

// CMceComAMRCodec::SetPayloadType

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

//

TInt CMceComAMRCodec::SetPayloadType( TUint8 aPayloadType )

    {

    if ( KMinDynPayloadType <= aPayloadType )

        {

        return CMceComCodec::SetPayloadType( aPayloadType );

        }

    else

        {

        return KErrNotSupported;

        }

    }

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

// CMceComAMRCodec::GetMaxBitRate

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

//

TUint CMceComAMRCodec::GetMaxBitRate()

	{

    if( iAllowedBitrates & KMceAllowedAmrNbBitrate122 )

        {

        return KMceAmrNbBitrate122;

        }

    else if( iAllowedBitrates & KMceAllowedAmrNbBitrate102 )

        {

        return KMceAmrNbBitrate102;

        }

    else if( iAllowedBitrates & KMceAllowedAmrNbBitrate795 )

        {

        return KMceAmrNbBitrate795;

        }   

    else if( iAllowedBitrates & KMceAllowedAmrNbBitrate740 )

        {

        return KMceAmrNbBitrate740;

        }   

    else if( iAllowedBitrates & KMceAllowedAmrNbBitrate670 )

        {

        return KMceAmrNbBitrate670;

        }   

    else if( iAllowedBitrates & KMceAllowedAmrNbBitrate590 )

        {

        return KMceAmrNbBitrate590;

        }

    else if( iAllowedBitrates & KMceAllowedAmrNbBitrate515 )

        {

        return KMceAmrNbBitrate515;

        }  

    else if( iAllowedBitrates & KMceAllowedAmrNbBitrate475 )

        {

        return KMceAmrNbBitrate475;

        }

    else

        {

        return 0;    

        }

	}

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

// CMceComAMRCodec::ResolveAllowedBitrates

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

//

TInt CMceComAMRCodec::ResolveAllowedBitrates( 

    TUint aBitrate, TUint& aAllowedBitrates )

    {

    TInt retVal( KErrNone );

    if ( aBitrate <= KMceAmrNbBitrate475 )

        {

        aAllowedBitrates = KMceAllowedAmrNbBitrate475;

        }

    else if ( aBitrate <= KMceAmrNbBitrate515 )

        {

        aAllowedBitrates = KMceAllowedAmrNbBitrate515;

        }

    else if ( aBitrate <= KMceAmrNbBitrate590 )

        {

        aAllowedBitrates = KMceAllowedAmrNbBitrate590;

        }

    else if ( aBitrate <= KMceAmrNbBitrate670 )

        {

        aAllowedBitrates = KMceAllowedAmrNbBitrate670;

        }

    else if ( aBitrate <= KMceAmrNbBitrate740 )

        {

        aAllowedBitrates = KMceAllowedAmrNbBitrate740;

        }

    else if ( aBitrate <= KMceAmrNbBitrate795 )

        {

        aAllowedBitrates = KMceAllowedAmrNbBitrate795;

        }

    else if ( aBitrate <= KMceAmrNbBitrate102 )

        {

        aAllowedBitrates = KMceAllowedAmrNbBitrate102;

        }

    else if ( aBitrate <= KMceAmrNbBitrate122 )

        {

        aAllowedBitrates = KMceAllowedAmrNbBitrateAll;

        }

    else

        {

        retVal = KErrNotSupported;

        }

    return retVal;

    }

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

// CMceComAMRCodec::SetSamplingFreq

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

//

TInt CMceComAMRCodec::SetSamplingFreq( TUint aSamplingFreq )

    {

    if ( KMceAmrNbSamplingFreq == aSamplingFreq || 

         KMceAmrWbSamplingFreq == aSamplingFreq )

        {

        iSamplingFreq = aSamplingFreq;

        return KErrNone;

        }

    else

        {

        return KErrNotSupported;

        }

    }

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

// CMceComAMRCodec::SetPTime

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

//

TInt CMceComAMRCodec::SetPTime( TUint aPTime )

    {

    if ( ( aPTime % KMceAmrFrameTime ) == 0 )

        {

        return CMceComAudioCodec::SetPTime( aPTime );

        }

    else

        {

        return KErrNotSupported;

        }

    }

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

// CMceComAudioCodec::SetMaxPTime

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

//

TInt CMceComAMRCodec::SetMaxPTime( TUint aMaxPTime )

    {

    if ( ( aMaxPTime % KMceAmrFrameTime ) == 0 )

        {

        return CMceComAudioCodec::SetMaxPTime( aMaxPTime );

        }

    else

        {

        return KErrNotSupported;

        }

    }

#ifdef MCE_COMMON_SERVER_SIDE

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

// CMceComAMRCodec::DoMccValidateL

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

//

CMceComCodec* CMceComAMRCodec::DoMccValidateL( CMccCodecInformation& aMccCodec,

                                               CMceSrvStream& /*aStream*/,

                                               TMceNegotiationRole aRole )

    {

    //if answerer mcc codec represents the received offer and codec the answer

    //if offerer codec represents the sent offer and mcc codec the answer

    // Bitrates field contains also additional information, mask it away

    TUint mccBitrates = ( aMccCodec.AllowedBitrates() & KMceAllowedAmrNbBitrateAll );

    TUint mceBitrates = ( iAllowedBitrates & KMceAllowedAmrNbBitrateAll );

    TBool notValid = aRole == EMceRoleAnswerer ?

                  ( mceBitrates && mccBitrates == 0 ||

	                mceBitrates > mccBitrates ) :

                  ( mceBitrates && mccBitrates == 0 ||

	                mceBitrates < mccBitrates );

	User::LeaveIfError( notValid ? KErrNotSupported : KErrNone );

	if ( aMccCodec.CodecMode() != (TCodecMode)iCodecMode )

		{

		// codec-mode was different, fail.

		User::Leave(KErrNotSupported);

		}

	return NULL;

    }

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

// CMceComAMRCodec::DoSetDefaultFmtpAttributeL

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

//

void CMceComAMRCodec::DoSetDefaultFmtpAttributeL()

    {

    SetFmtpAttributeL( KDefaultAmrFmtp );   

    }

#endif

// End of File