sl@0: /*
sl@0: * Copyright (c) 2007 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: 
sl@0: 
sl@0: #ifndef AUDIOSTREAM_H
sl@0: #define AUDIOSTREAM_H
sl@0: 
sl@0: #include <e32base.h>
sl@0: #include <f32file.h>
sl@0: #include <a3f/a3f_trace_utils.h>
sl@0: #include <a3f/a3fbase.h>
sl@0: #include "audiostreamadaptation.h"
sl@0: #include "maudiocodecadaptationobserver.h"
sl@0: #include "mconfigurationhelper.h"
sl@0: #include "mstreambuffercontrol.h"
sl@0: 
sl@0: class CAudioCodec;
sl@0: class CAudioStream;
sl@0: class CAudioDeviceSource;
sl@0: class CAudioDeviceSink;
sl@0: class CBufferSink;
sl@0: class CBufferSource;
sl@0: class CAudioGainControl;
sl@0: class CFourCCConvertor;
sl@0: class MAudioStreamAdaptationObserver;
sl@0: class MInputPort;
sl@0: class MOutputPort;
sl@0: class MAudioCodecObserver;
sl@0: 
sl@0: 
sl@0: #include "mlogicalchain.h"
sl@0: 
sl@0: class CLogicalAudioStream;
sl@0: 
sl@0: /////
sl@0:  // This is the implementation of audio stream adaptation.
sl@0:  ///
sl@0: 
sl@0: class CAudioStream : 	public CAudioStreamAdaptation,
sl@0: 						public MAudioCodecAdaptationObserver,
sl@0: 						public MConfigurationHelper, 
sl@0: 						public MStreamBufferControl, 
sl@0: 						public MFlushHandlerObserver
sl@0: 	{
sl@0: public:
sl@0: 
sl@0: 	/////
sl@0: 	// Create a new instance.
sl@0: 	//
sl@0: 	// @param aStream the stream implementation. Ownership of the pointer is transferred to the create CAudioStream object instance.
sl@0: 	// @return CAudioStreamComponent* a pointer to the created instance.
sl@0: 	///
sl@0: 	static CAudioStream* NewL();
sl@0: 
sl@0: 	/////
sl@0: 	// Destructor.
sl@0: 	//
sl@0: 	// Deletes all objects and releases all resource owned by this instance.
sl@0: 	///
sl@0: 	virtual ~CAudioStream();
sl@0: 
sl@0: 	// From CAudioStreamAdaptation
sl@0: 	TInt RegisterAudioStreamObserver(MAudioStreamAdaptationObserver& aObserver);
sl@0: 	void UnregisterAudioStreamObserver(MAudioStreamAdaptationObserver& aObserver);
sl@0: 	void UnregisterAllAudioStreamObserver();
sl@0: 	void SetFourCC(const CFourCCConvertor& aFourCCConvertor);
sl@0: 
sl@0: 	TInt Message(MLogicalChain& aCurrentChain, MLogicalChain& aDesiredChain, MAudioContext& aContext, TInt aFlags);
sl@0: 
sl@0: 	// from class MAudioCodecAdaptationObserver
sl@0: 	void AllBuffersProcessed();
sl@0: 	void ProcessingUnitError(TInt aError);
sl@0: 	TInt RegisterAudioCodecObserver(MAudioCodecObserver& aObserver);
sl@0: 	void UnregisterAudioCodecObserver(MAudioCodecObserver& aObserver);
sl@0: 	void GetSupportedAModesComplete(TInt aError);
sl@0: 	void GetSupportedARatesComplete(TInt aError);
sl@0: 
sl@0: 	// from base clase MStreamBufferControl
sl@0: 	TInt FlushBuffers();
sl@0: 
sl@0: 	// from class MFlushHandlerObserver
sl@0: 	void FlushComplete(TInt aError);
sl@0: protected:
sl@0: 	// from base clase MConfigurationhelper
sl@0: 	TInt GetSupportedModes(RArray<TUid>& aSupportedModes);
sl@0: 	TInt GetSupportedSampleRates(RArray<TInt>& aSupportedRates);
sl@0: 
sl@0: private:
sl@0: 	TInt CreateDataPath();
sl@0: 
sl@0: 	TInt DemolishDataPath();
sl@0: 
sl@0: 	TInt ChangeState(TAudioState aPreviousState, TAudioState aTargetState);
sl@0: 
sl@0: 	TAny* GetComponent(TUid aType);
sl@0: 
sl@0: 	TInt CreatePhysicalComponents(MLogicalChain& aDesiredChain);
sl@0: 
sl@0: 	void DeletePhysicalComponents();
sl@0: 
sl@0: 	void ConstructL();
sl@0: 
sl@0: 	CAudioStream();
sl@0: 
sl@0: private:
sl@0: 	// Flags
sl@0: 	TBool				iIsCodecConfig;
sl@0: 
sl@0: 	// Components
sl@0: 	MLogicalChain*		iDesiredChain;
sl@0: 
sl@0: 	MLogicalChain*		iCurrentChain;
sl@0: 
sl@0: 	MAudioContext* 		iAudioContext;
sl@0: 
sl@0: 	CAudioCodec*		iCodec;
sl@0: 
sl@0: 	CBufferSource*		iBufferSource;
sl@0: 
sl@0: 	CBufferSink*		iBufferSink;
sl@0: 
sl@0: 	CAudioDeviceSource*	iDeviceSource;
sl@0: 
sl@0: 	CAudioDeviceSink*	iDeviceSink;
sl@0: 
sl@0: 	CAudioGainControl*	iGainControl;
sl@0: 
sl@0: 	// Not owned
sl@0: 	CFourCCConvertor*	iFourCCConvertor;
sl@0: 
sl@0: 	TInt				iSampleRateConfig;
sl@0: 
sl@0: 	TUid				iModeConfig;
sl@0: 
sl@0: 	TAudioState			iCurrentStreamState;
sl@0: 
sl@0: 	TAudioState			iDesiredStreamState;
sl@0: 
sl@0: 	// Observers
sl@0: 	RPointerArray<MAudioStreamAdaptationObserver> iAudioStreamObservers;
sl@0: 
sl@0: 	RPointerArray<MAudioCodecObserver>	iAudioCodecObservers;
sl@0: 
sl@0: 	MOutputPort*		iOutputport;	// remove ports when changing to Uninitialized
sl@0: 
sl@0: 	MInputPort*			iInputport;
sl@0: 
sl@0: 	TTimeIntervalMicroSeconds iTimeProcessed;
sl@0: 	};
sl@0: 
sl@0: #endif // AUDIOSTREAM_H__