sl@0: // Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: //
sl@0: 
sl@0: #ifndef __MMFSWCODECPLAYDATAPATH_H__
sl@0: #define __MMFSWCODECPLAYDATAPATH_H__
sl@0: 
sl@0: 
sl@0: #include "mmfSwCodecDataPath.h"
sl@0: #include <mmf/server/mmfswcodecwrapper.h>
sl@0: 
sl@0: 
sl@0: class CMMFSwCodecPlayDataPath; //fwd ref
sl@0: class CMMFSwCodecUtility;	// fwd ref
sl@0: class MEmptyBuffersCustomInterface;	// fwd ref
sl@0: class MSetVbrFlagCustomInterface;	// fwd ref
sl@0: 
sl@0: /**
sl@0:  * Active object used by the CMMFSwCodecPlayDataPath to send data to the sound
sl@0:  * driver  This particular active object encapsulates the asynchronous play 
sl@0:  * function, where a buffer of data is sent to the WINS audio device, and the
sl@0:  * active object's RunL is called when the buffer has been consumed by the 
sl@0:  * WINS audio device.
sl@0:  * @internalComponent
sl@0:  */
sl@0: class CDataPathPlayer : public CActive
sl@0: 	{
sl@0: public:
sl@0: 	CDataPathPlayer(CMMFSwCodecPlayDataPath& aParent, TInt aPriority);
sl@0: 	~CDataPathPlayer();
sl@0: 	void Start();
sl@0: 	void ResumePlaying();
sl@0: 	void PlayData(const CMMFDataBuffer& aData);
sl@0: 	void Stop();
sl@0: 	virtual void RunL();
sl@0: 	virtual TInt RunError(TInt aError);
sl@0: 	virtual void DoCancel();
sl@0: 	virtual void Error(TInt aError);
sl@0: private:
sl@0: 	CMMFSwCodecPlayDataPath& iParent;
sl@0: 	const CMMFDataBuffer* iDataFromSource;
sl@0: 	TBool iResumePlaying;
sl@0: 	};
sl@0: 
sl@0: /*
sl@0: * Active object used by CMMFSwCodecPlayDataPath to listening for error messages
sl@0: * from the WINS audio device.  If this object's RunL is called, playback has 
sl@0: * been terminated for some reason.  The active object then 
sl@0: * notifies its parent the datapath, so that proper cleanup and client 
sl@0: * notification can occur.
sl@0: * @internalComponent
sl@0: */
sl@0: class CSoundDevPlayErrorReceiver : public CActive
sl@0: 	{
sl@0: public:
sl@0: 	CSoundDevPlayErrorReceiver(CMMFSwCodecPlayDataPath& aParent, TInt aPriority);
sl@0: 	~CSoundDevPlayErrorReceiver();
sl@0: 	void Start();
sl@0: 	void Stop();
sl@0: 	virtual void RunL();
sl@0: 	virtual void DoCancel();
sl@0: private:
sl@0: 	CMMFSwCodecPlayDataPath& iParent;
sl@0: 	};
sl@0: 
sl@0: 
sl@0: /**
sl@0:  *  Derived class for play datapath internal to the Sw codec wrapper
sl@0:  *  @internalComponent
sl@0:  */
sl@0: class CMMFSwCodecPlayDataPath : public CMMFSwCodecDataPathX, 
sl@0: 								public MEmptyBuffersCustomInterface, 
sl@0: 								public MSetVbrFlagCustomInterface,
sl@0: 								public MTimePlayedCustomInterface,
sl@0: 								public MIgnoreUnderflowEventsCustomInterface
sl@0: 	{ 
sl@0: public:	
sl@0: 	static CMMFSwCodecPlayDataPath* NewL();
sl@0: 	virtual ~CMMFSwCodecPlayDataPath(); 
sl@0: 	virtual TInt SetObserver(MMMFHwDeviceObserver &aHwObserver);
sl@0: 	virtual TInt AddCodec(CMMFSwCodec& aCodec);
sl@0: 	virtual TInt Start();
sl@0: 	virtual void Stop();
sl@0: 	virtual void Pause();
sl@0: 	virtual void BufferFilledL(CMMFDataBuffer& aBuffer);
sl@0: 	virtual void BufferEmptiedL(const CMMFDataBuffer& aBuffer);
sl@0: 	virtual void SoundDeviceException(TInt aError);
sl@0: 	virtual RMdaDevSound& Device();
sl@0: 	virtual void SetPlayCustomInterface(MPlayCustomInterface& aCustomInterface);
sl@0: 	virtual TInt EmptyBuffers();
sl@0: 	virtual TAny* CustomInterface(TUid aInterfaceId);
sl@0: 	//From MSetVbrFlagCustomInterface
sl@0: 	virtual void SetVbrFlag();
sl@0: 	virtual TInt GetTimePlayed(TTimeIntervalMicroSeconds& aTime);
sl@0: 	virtual void IgnoreUnderflowEvents();
sl@0: protected:	
sl@0: 	CMMFSwCodecPlayDataPath() {};
sl@0: 	void ConstructL();
sl@0: 	void FillSourceBufferL();
sl@0: 	void FillSoundDeviceBufferL();
sl@0: protected: 
sl@0: 	CDataPathPlayer* iAudioPlayer;
sl@0: 	CSoundDevPlayErrorReceiver* iSoundDeviceErrorReceiver;
sl@0: 	RMdaDevSound iSoundDevice;
sl@0: 	CMMFDataBuffer* iSourceBuffer;
sl@0: 	CMMFDataBuffer* iSoundDeviceBuffer;
sl@0: 	TBool iNoMoreSourceData;
sl@0: 	TBool iSinkCanReceive;
sl@0: 	TUint iSourceBufferSize;
sl@0: 	TUint iSoundDevBufferSize;
sl@0: 	CMMFSwCodecUtility* iUtility;
sl@0: 	TBool iRampAudioSample;
sl@0: 	MPlayCustomInterface* iCustomInterface;	// not owned
sl@0: 	TTimeIntervalMicroSeconds iVolumeRamp;
sl@0: 	// DEF048512
sl@0: 	TInt iSampleRate;
sl@0: 	TInt iChannels;
sl@0: 	TBool iVbrFlag;
sl@0: 	TInt64 iBytesPlayed;
sl@0: 	TBool iNoMoreSoundDeviceData;
sl@0: 	TBool iIgnoreUnderflow;
sl@0: 	};
sl@0: 
sl@0: #endif
sl@0: