audio1eng.cpp

《SymbianOSC手机应用开发》源码

/* Copyright (c) 2004, Symbian Software Ltd. All rights reserved */

#ifndef __Audio1ENG_H_
#define __Audio1ENG_H_

#include "Audio1eng.h"
#include "Audio1Ui.h"
#include "Audio1.hrh"

CAudio1Engine::CAudio1Engine(CAudio1Ui& aAppUi) : 
	iAppUi(aAppUi),
    iState(ENotReady)
    {
    }

CAudio1Engine* CAudio1Engine::NewL(CAudio1Ui& aAppUi)
    {
    CAudio1Engine* self = NewLC(aAppUi);
    CleanupStack::Pop();  // self
    return self;
    }

CAudio1Engine* CAudio1Engine::NewLC(CAudio1Ui& aAppUi)
    {
    CAudio1Engine* self = new (ELeave) CAudio1Engine(aAppUi);
    CleanupStack::PushL(self);
    self->ConstructL();
    return self;
    }

void CAudio1Engine::ConstructL()
    {
    }

void CAudio1Engine::SetFileL(const TDesC& aFileName)
	{
	if (iUtility)
		delete iUtility;

    iUtility = CMdaAudioPlayerUtility::NewFilePlayerL(aFileName, *this);
	}

CAudio1Engine::~CAudio1Engine()
    {
    delete iUtility;    
    iUtility = NULL;
    }

void CAudio1Engine::MapcInitComplete(TInt aError, const TTimeIntervalMicroSeconds& /*aDuration*/)
	{
	if (aError==KErrNone)
		{
		iState=EReady;
		iAppUi.UpdateViewL();
		}
	}

void CAudio1Engine::MapcPlayComplete(TInt /*aError*/)
	{
	iState=EReady;
	}

void CAudio1Engine::PlayL()
	{
	iUtility->Play();
	iState=EPlaying;
	}

void CAudio1Engine::StopL()
	{
	iUtility->Stop();
	iState=EReady;
	}

void CAudio1Engine::UpdateMenu(CEikMenuPane* aMenuPane)
    {
	switch(iState)
		{
		case ENotReady:
			aMenuPane->SetItemDimmed(ECmdOpenFile, EFalse);
			aMenuPane->SetItemDimmed(ECmdPlay, ETrue);
			aMenuPane->SetItemDimmed(ECmdStop, ETrue);
			break;

		case EReady:
			aMenuPane->SetItemDimmed(ECmdOpenFile, EFalse);
			aMenuPane->SetItemDimmed(ECmdPlay, EFalse);
			aMenuPane->SetItemDimmed(ECmdStop, ETrue);
			break;

		case EPlaying:
			aMenuPane->SetItemDimmed(ECmdOpenFile, ETrue);
			aMenuPane->SetItemDimmed(ECmdPlay, ETrue);
			aMenuPane->SetItemDimmed(ECmdStop, EFalse);
			break;
		}
	}

#endif// __Audio1ENG_H_