--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mmhais/refacladapt/src/audiocodec/audiocodec.h	Tue Feb 02 01:56:55 2010 +0200
@@ -0,0 +1,278 @@
+/*
+* Copyright (c) 2007-2008 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "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:
+*
+*/
+
+
+#ifndef AUDIOCODEC_H
+#define AUDIOCODEC_H
+
+#include <e32base.h>
+#include <mmf/server/mmfhwdevice.h>
+#include <mmf/server/mmfhwdevicesetup.h>
+#include <mmf/server/sounddevice.h>
+#include <a3f/a3f_trace_utils.h>
+#include <a3f/a3fbase.h>
+
+#include "hwdeviceimplementationuids.hrh"
+
+#include <mmf/plugin/mmfhwdeviceimplementationuids.hrh>
+
+#include "moutputport.h"
+#include "minputport.h"
+#include "mgainhelper.h"
+#include "mstreampositioncontrol.h"
+
+#include <a3f/msynccisupport.h>
+#include <a3f/maudiocodec.h>
+
+#define KFOURCCLENGTH 4
+
+
+enum TMode
+	{
+	// Decoder mode
+	EDecode = 0x01,
+	// And vice versa
+	EEncode = 0x02
+	};
+
+class TSampleRateTableEntry
+	{
+public:
+	TInt		iSampleRateValue;
+	TMMFSampleRate iSampleRate;
+	};
+
+class TAudioModeTableEntry
+	{
+public:
+	TMMFMonoStereo	iAudioModeValue;
+	TUid 			iAudioMode;
+	};
+
+const TInt KMaxModeIndex = 1;
+
+
+
+class MAudioCodecAdaptationObserver;
+class CFourCCConvertor;
+
+	/////
+	//This is the reference implementation of Phyisical AudioCodec
+	//@lib audiocodec.lib
+	///
+
+// TODO: Check if those interfaces MInputPort, MOutputPort should be replaced by MMMFAudioDataSupplier, MMMFAudioDataConsumer
+
+
+NONSHARABLE_CLASS(CAudioCodec) :public CActive,
+								public MMMFHwDeviceObserver,
+								public MInputPort,				// Adaptation interface
+								public MOutputPort,				// Adaptation interface
+								public MGainHelper,				// Adaptation interface
+								public MCustomInterfaceSupport,	// A3F interface
+								public MStreamPositionControl	// Adaptation interface
+	{
+friend class CAudioGainControl;
+public:
+
+	/////
+	// Create a new instance.
+	//
+	// @param aTypeId.
+	// @return CAudioCodec* a pointer to the created instance.
+	///
+
+	IMPORT_C static CAudioCodec* NewL(TUid aTypeId, const CFourCCConvertor& aFourCCConvertor);
+
+	// Check if this would be removed
+	/////
+	//  Structure to hold hw device init parameters
+	///
+	class THwDeviceInitArgs
+		{
+	public:
+		TUint8 iPolicyId;
+		TInt iEapStreamId;
+		};
+
+	/////
+	 // Destructor.
+	 //
+	 // Deletes all objects and releases all resource owned by this instance.
+	///
+	virtual ~CAudioCodec();
+
+
+	IMPORT_C TInt SetFormat(TUid aFormat);
+	IMPORT_C TInt RegisterAudioCodecObserver(MAudioCodecAdaptationObserver& aObserver);
+	IMPORT_C void UnregisterAudioCodecObserver(MAudioCodecAdaptationObserver& aObserver);
+	IMPORT_C TInt Initialize();
+	IMPORT_C TInt Load(TInt aSampleRate, TUid aMode);
+	IMPORT_C TInt Start();
+	IMPORT_C TInt Pause();
+	IMPORT_C TInt Stop();
+
+
+
+	// From MOutputPort
+	TInt GetOutputPort(MOutputPort*& aOutputPort);
+
+	// From MInputPort
+	TInt GetInputPort(MInputPort*& aInputPort);
+
+	// From MCustomInterfaceSupport
+	virtual TInt RequestCustomInterface(TUid aUid, TAny*& aPtr);
+	virtual TInt RegisterObserver(MCustomInterfaceSupportObserver& aObserver);
+	virtual void UnRegisterObserver(MCustomInterfaceSupportObserver& aObserver);
+
+	// from base class MInputPort
+	virtual TInt EmptyBuffer(CMMFBuffer* aBuffer, MOutputPort* aSupplier);
+	virtual TInt BufferFilled(CMMFBuffer* aBuffer);
+	virtual TInt SetOutput(MOutputPort* aOutput);
+	virtual TInt RemoveOutput(MOutputPort* aOutput);
+
+	// from base class MOutputPort
+	virtual TInt FillBuffer(CMMFBuffer* aBuffer, MInputPort* aConsumer);
+	virtual TInt BufferEmptied(CMMFBuffer* aBuffer);
+	virtual TInt SetInput(MInputPort* aInput);
+	virtual TInt RemoveInput(MInputPort* aInput);
+	virtual TInt FlushBuffer(MFlushHandlerObserver* aFlushObserver);
+
+	// from base class MMMFHwDeviceObserver
+	virtual TInt FillThisHwBuffer(CMMFBuffer& aHwBuffer);
+	virtual TInt EmptyThisHwBuffer(CMMFBuffer& aHwBuffer);
+	virtual TInt MsgFromHwDevice(TUid aMessageType, const TDesC8& aMsg);
+	virtual void Stopped();
+	virtual void Error(TInt aError);
+
+	// from base class MGainHelper
+	TInt GetGain(TInt& aGain) const;
+	TInt SetGain(RArray<TAudioChannelGain>& aChannels);
+	TInt ConfigureRamp(TUid aRampOperation, const TTimeIntervalMicroSeconds& aRampDuration);
+
+	// from base class MStreamPositionControl
+	TInt GetControlPosition(TTimeIntervalMicroSeconds& aPosition);
+	void ResetControlPosition();
+
+
+	TInt ResolveMode(TUid aMode);
+	TInt GetSupportedSampleRates(RArray<TInt>& aSupportedRates);
+	TInt GetSupportedModes(RArray<TUid>& aSupportedModes);
+
+	//Return the supported values to the client
+	IMPORT_C TInt SupportedModes(RArray<TUid>& aSupportedModes);
+	IMPORT_C TInt SupportedRates(RArray<TInt>& aSupportedRates);
+	
+protected:
+	// from CActive
+	void RunL();
+	void DoCancel();
+	TInt RunError(TInt aError);
+
+	TInt LoadHwDevice();
+	TInt InitHwDevice();
+	TInt SetHwDeviceConfig();
+	void FourCCToHwDeviceUidL(TFourCC aFourCC, TMode aMode, TUid &aHWDev);
+
+	TBool IsDataTypeMatch(CImplementationInformation* aHwDeviceResourceEntry,
+		const TDesC8& aHwMatchFourCC, TMode aState);
+
+	// TODO: This will be replaced, when the new mechanism to get the supported configuration
+	// will be defined
+	/////
+	 // Reads hw device parameters from resource files.
+	 // @return error code.
+	 ///
+	TInt ReadResourceRates(RArray<TInt>& aRates);
+	TInt ReadResourceModes(RArray<TUid>& aModes);
+
+	void UpdateBytesPlayed();
+
+private:
+	void ConstructL();
+
+	CAudioCodec(TUid aTypeId, const CFourCCConvertor& aFourCCConvertor);
+
+private:
+	TUid						iType;
+	// Indicates if this is an encoder or decoder
+	TMode						iMode;
+
+	// The codec format
+	TUid						iFormat;
+
+	// Resolved HwDevice Uid
+	TUid						iDeviceUid;
+
+	//
+
+	MPlayCustomInterface*		iPlayCustomInterface;
+
+	MRecordCustomInterface*		iRecordCustomInterface;
+
+	// HwDevice init parameters
+	THwDeviceInitParams			iHwDeviceInitParams;
+	THwDeviceInitArgs			iHwDeviceInitArgs;
+
+	// CI observers
+	RPointerArray<MCustomInterfaceSupportObserver>	iCISupportObservers;
+
+	enum THwDeviceState
+		{
+		EIdle,
+		ERunning,
+		EPaused,
+		EStopped
+		};
+
+	TBool						iLastBuffer;
+	THwDeviceState				iHwDeviceState;
+	TBool						iLastBufferAck;
+	TInt						iRequest;
+	TInt						iErrorRates;
+	TInt						iErrorModes;
+	TInt						iSampleRateConfig;
+	TUid						iModeConfig;
+
+	CMMFHwDevice*				iHwDevice;
+	CMMFDataBuffer*				iAdaptationBuffer;
+
+	MOutputPort*				iOutputPort;
+	MInputPort*					iInputPort;
+	TInt64						iPosition;
+	TInt64 						iPlayedBytesCount;
+
+	CFourCCConvertor* 			iFourCCConvertor;
+	RPointerArray<MAudioCodecAdaptationObserver> iAudioCodecObservers;
+	MIgnoreUnderflowEventsCustomInterface* iIgnoreUnderflowInterface;
+	TUid						iRampOperation;
+	TTimeIntervalMicroSeconds	iRampDuration;
+	};
+
+/*
+ *	Updates the total bytes played.
+ *
+ */
+inline void CAudioCodec::UpdateBytesPlayed()
+	{
+	if (iPlayCustomInterface)
+		{
+		iPlayedBytesCount = iPlayCustomInterface->BytesPlayed();
+		}
+	}
+
+#endif // AUDIOCODEC_H