examples/SFExamples/Quick_Recipes_on_Symbian_OS_Multimedia_Example_Code/AudioPlaying/src/SimpleAudioPlayer.cpp

// 
// 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 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".
// 
// Initial Contributors:
// Nokia Corporation - initial contribution.
// 
// Contributors:
// 
// Description:
// 

// INCLUDE FILES
#include <eikenv.h>
#include "SimpleAudioPlayer.h"

// CONSTANTS
const TInt KOneSecond = 1000 * 1000; // 1 second in microseconds
const TInt KVolumeDenominator = 2;

// METHODS DEFINITION

CSimpleAudioPlayer::CSimpleAudioPlayer()
        {
        }

CSimpleAudioPlayer::~CSimpleAudioPlayer()
        {
        delete iPlayerUtility;
        }

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

CSimpleAudioPlayer* CSimpleAudioPlayer::NewL()
        {
        CSimpleAudioPlayer* self = CSimpleAudioPlayer::NewLC();
        CleanupStack::Pop(self);
        return self;
        }

void CSimpleAudioPlayer::ConstructL()
        {
        iPlayerUtility = CMdaAudioPlayerUtility::NewL(*this);
        }

void CSimpleAudioPlayer::PlayL(const TDesC& aFileName)
        {
        iPlayerUtility->Close();
        iPlayerUtility->OpenFileL(aFileName);
        }

void CSimpleAudioPlayer::Pause()
        {
        iPlayerUtility->Pause();
        }

void CSimpleAudioPlayer::Resume()
        {
        iPlayerUtility->Play();
        }

void CSimpleAudioPlayer::Stop()
        {
        iPlayerUtility->Stop();
        }

void CSimpleAudioPlayer::Rewind(TInt aIntervalInSeconds)
        {
        iPlayerUtility->Pause();
        
        // Get the current position of the playback.
        TTimeIntervalMicroSeconds position;
        iPlayerUtility->GetPosition(position);
        
        // Add the interval to the current position.
        position = position.Int64() - aIntervalInSeconds * KOneSecond;
        
        // Set the new position.
        iPlayerUtility->SetPosition(position);
        iPlayerUtility->Play();
        }

void CSimpleAudioPlayer::FastForward(TInt aIntervalInSeconds)
        {
        iPlayerUtility->Pause();
        
        // Get the current position of the playback.
        TTimeIntervalMicroSeconds position;
        iPlayerUtility->GetPosition(position);
        
        // Subtract the interval from the current position.
        position = position.Int64() + aIntervalInSeconds * KOneSecond;
        
        // Set the new position.
        iPlayerUtility->SetPosition(position);
        iPlayerUtility->Play();
        }

void CSimpleAudioPlayer::MapcInitComplete(TInt aError,
                const TTimeIntervalMicroSeconds& /*aDuration*/)
        {
        if (KErrNone == aError)
                {
                iPlayerUtility->SetVolume(
                                iPlayerUtility->MaxVolume() / KVolumeDenominator);
                iPlayerUtility->Play();
                }
        else
                {
                iPlayerUtility->Close();
                
                // Do something when an error happens.
                DisplayErrorMessage(aError);
                }
        }

void CSimpleAudioPlayer::MapcPlayComplete(TInt aError)
        {
        if (KErrNone == aError)
                {
                // Do something when the playback can be completed successfully.
                }
        else
                {
                // Do something when an error happens.
                DisplayErrorMessage(aError);
                }
        }

void CSimpleAudioPlayer::DisplayErrorMessage(TInt aError)
        {
        const TInt KMaxBuffer = 15;
        _LIT(KErrorMessage, "Error: %d");
        TBuf<KMaxBuffer> buffer;
        buffer.AppendFormat(KErrorMessage, aError);
        TRAP_IGNORE(CEikonEnv::Static()->InfoWinL(KNullDesC, buffer));
        }

// End of File

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