/* 
 *
 * Copyright (c) <2010> Comarch S.A. and/or its subsidiary(-ies).
 * All rights reserved.
 * This component and the accompanying materials are made available
 * under the terms of the License "Eclipse Public License v1.0"
 * which accompanies this distribution, and is available
 * at the URL "http://www.eclipse.org/legal/epl-v10.html".
 *
 * Original Contributors:
 * Comarch S.A. - original contribution.
 *
 * Contributors:
 *
 * Description:
 *
 */

#include "hspremoteaudiovolumecontrol.h"
#include "hspcommand.h"
#include "hspsettings.h"
#include "debug.h"

CHsHSPRemoteAudioVolumeControl* CHsHSPRemoteAudioVolumeControl::NewL(
        MHsHSPFeatureProviderObserver* aObserver )
    {
    CHsHSPRemoteAudioVolumeControl* self =
            CHsHSPRemoteAudioVolumeControl::NewLC( aObserver );
    CleanupStack::Pop( self );
    return self;
    }

CHsHSPRemoteAudioVolumeControl* CHsHSPRemoteAudioVolumeControl::NewLC(
        MHsHSPFeatureProviderObserver* aObserver )
    {
    CHsHSPRemoteAudioVolumeControl* self =
            new ( ELeave ) CHsHSPRemoteAudioVolumeControl( aObserver );
    CleanupStack::PushL( self );
    self->ConstructL();
    return self;
    }

CHsHSPRemoteAudioVolumeControl::~CHsHSPRemoteAudioVolumeControl()
    {
    if ( iSettings )
        {
        iSettings->Release();
        }
    }

void CHsHSPRemoteAudioVolumeControl::Reset()
    {
    TRACE_FUNC_ENTRY

    iWaitingForVgmOK = EFalse;
    iWaitingForVgsOK = EFalse;
    TRACE_FUNC_EXIT
    }

TInt CHsHSPRemoteAudioVolumeControl::ProcessCommand(
        const CHsHSPCommand* aInputCmd, CHsHSPCommand &aOutputCmd )
    {
    TRACE_FUNC_ENTRY

    TInt res = KErrNone;
    if ( aInputCmd -> FromAG() )
        {
        if ( aInputCmd -> Type() == EHSPCmdVGS )
            {
            TRAP( res, SetVolumeLevelL(aInputCmd));
            TRACE_INFO(_L("Speaker volume changed : AG initiated"))
            InformObserver( res );
            }
        else if ( aInputCmd -> Type() == EHSPCmdVGM )
            {
            TRAP( res, SetMicGainLevelL(aInputCmd));
            TRACE_INFO(_L("Mic gain changed : AG initiated"))
            InformObserver( res );
            }
        else if ( aInputCmd -> Type() == EHSPCmdOK )
            {
            if ( iWaitingForVgmOK )
                {
                TRACE_INFO(_L("Mic gain changed"))
                InformObserver( res );
                }
            else if ( iWaitingForVgsOK )
                {
                TRACE_INFO(_L("Speaker volume changed"))
                InformObserver( res );
                }
            else
                res = KErrArgument;
            }
        else
            {
            res = KErrArgument;
            }
        }
    else
        {
        if ( aInputCmd-> Type() == EHSPCmdVGS )
            {
            iWaitingForVgsOK = ETrue;
            iWaitingForVgmOK = EFalse;
            TRAP( res, SetVolumeLevelL(aInputCmd);
                    CHsHSPCommand ::CopyL( aInputCmd, aOutputCmd ) );
            }
        else if ( aInputCmd->Type() == EHSPCmdVGM )
            {
            iWaitingForVgmOK = ETrue;
            iWaitingForVgsOK = EFalse;
            TRAP( res, SetMicGainLevelL(aInputCmd);
                    CHsHSPCommand::CopyL( aInputCmd, aOutputCmd ) );
            }
        else
            {
            res = KErrArgument;
            }
        }

    TRACE_FUNC_EXIT
    return res;
    }

CHsHSPRemoteAudioVolumeControl::CHsHSPRemoteAudioVolumeControl(
        MHsHSPFeatureProviderObserver* aObserver ) :
    iObserver( aObserver )
    {
    }

void CHsHSPRemoteAudioVolumeControl::ConstructL()
    {
    iSettings = CHsHSPSettings::InstanceL();
    }

void CHsHSPRemoteAudioVolumeControl::InformObserver( TInt aErr )
    {
    __ASSERT_ALWAYS(iObserver, User::Panic(_L("Observer missing"),KErrGeneral));
    iObserver ->HandleProcedureCompleted( aErr, iHSPProc );
    }

void CHsHSPRemoteAudioVolumeControl::SetVolumeLevelL( 
        const CHsHSPCommand* aCmd )
    {
    TRACE_FUNC_ENTRY

    CheckParamsL( aCmd );
    iSettings->SetSpeakerVolumeLevel( aCmd->Params()[0].IntL() );

    TRACE_FUNC_EXIT
    }

void CHsHSPRemoteAudioVolumeControl::SetMicGainLevelL(
        const CHsHSPCommand* aCmd )
    {

    TRACE_FUNC_ENTRY

    CheckParamsL( aCmd );
    iSettings->SetMicGainLevel( aCmd->Params()[0].IntL() );

    TRACE_FUNC_EXIT
    }

void CHsHSPRemoteAudioVolumeControl::CheckParamsL( const CHsHSPCommand* aCmd )
    {
    TRACE_FUNC_ENTRY

    TInt params = 1;
    if ( params != aCmd -> Params().Count() )
        User::Leave( KErrArgument );

    TRACE_FUNC_EXIT
    }