--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mmhais/refacladapt/src/tonehwdevice/tonedatapath.h	Fri Oct 08 19:40:43 2010 +0100
@@ -0,0 +1,199 @@
+// Copyright (c) 2003-2009 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 TONEDATAPATH_H
+#define TONEDATAPATH_H
+
+#include <e32base.h>
+#include "mdasoundadapter.h"
+#include <mmf/server/mmfdatabuffer.h>
+#include "tonehwdevice.h"
+
+//message from  tonedatapath to hw device observer
+//to tell it to update the bytes played 
+#define KToneHwDeviceObserverUpdateBytesPlayed	0x101FE2A4
+
+class MMMFHwDeviceObserver;
+class CToneDataPath;
+class CToneCodec;
+
+
+/**
+@internalTechnology
+Panic codes for the Tone Data Path
+*/
+enum TToneDataPathPanicCode
+	{
+	/** Codec wrapper did not create an internal datapath
+	*/
+	EToneNoDataPath,
+
+	/** Codec wrapper does not have a device handle
+	*/
+	EToneNoDevice,
+
+	/** Codec wrapper codec returns non existant process result
+	*/
+	EToneBadCodec,
+
+	/** Sound driver returns unexpected buffer
+	*/
+	EToneBadBuffer
+	};
+
+
+/**
+ * Active object used by the CToneDataPath to send data to the sound
+ * driver  This particular active object encapsulates the asynchronous play 
+ * function, where a buffer of data is sent to the WINS audio device, and the
+ * active object's RunL is called when the buffer has been consumed by the 
+ * WINS audio device.
+ * @internalComponent
+ */
+class CToneDataPathPlayer : public CActive
+	{
+public:
+	CToneDataPathPlayer(CToneDataPath& aParent, TInt aPriority);
+	~CToneDataPathPlayer();
+	void Start();
+	void ResumePlaying();
+	void PlayData(const CMMFDataBuffer& aData);
+	void Stop();
+	virtual void RunL();
+	virtual TInt RunError(TInt aError);
+	virtual void DoCancel();
+	virtual void Error(TInt aError);
+private:
+	CToneDataPath& iParent;
+	const CMMFDataBuffer* iDataFromSource;
+	TBool iResumePlaying;
+	};
+
+/*
+* Active object used by CToneDataPath to listening for error messages
+* from the WINS audio device.  If this object's RunL is called, playback has 
+* been terminated for some reason.  The active object then 
+* notifies its parent the datapath, so that proper cleanup and client 
+* notification can occur.
+* @internalComponent
+*/
+class CToneSoundDevPlayErrorReceiver : public CActive
+	{
+public:
+	CToneSoundDevPlayErrorReceiver(CToneDataPath& aParent, TInt aPriority);
+	~CToneSoundDevPlayErrorReceiver();
+	void Start();
+	void Stop();
+	virtual void RunL();
+	virtual void DoCancel();
+private:
+	CToneDataPath& iParent;
+	};
+
+
+class CToneDataPath : public CBase,
+					  public MIgnoreUnderflowEventsCustomInterface
+
+	{ 
+public: 
+	enum TToneDataPathState
+	{
+	EStopped,
+	EPlaying,
+	EPaused
+	};
+public:	
+	static CToneDataPath* NewL();
+	~CToneDataPath(); 
+	TInt SetObserver(MMMFHwDeviceObserver& aHwObserver);
+	TInt AddCodec(CToneCodec& aCodec);
+	TInt Start();
+	void Stop();
+	void Pause();
+	RMdaDevSound& Device();
+	void BufferFilledL(CMMFDataBuffer& aBuffer);
+	void BufferEmptiedL(const CMMFDataBuffer& aBuffer);
+	void SoundDeviceException(TInt aError);
+	TToneDataPathState State() {return iState;};
+	TInt EmptyBuffers();
+	virtual void IgnoreUnderflowEvents();
+	virtual TAny* CustomInterface(TUid aInterface);
+
+
+protected:	
+	CToneDataPath() {};
+	inline void Panic(TInt aPanicCode);
+	void ConstructL();
+	void FillSourceBufferL();
+	void FillSoundDeviceBufferL();
+	
+#ifdef __CYCLE_MMF_DATABUFFERS__
+	CMMFDataBuffer* CycleAudioBuffer(CMMFDataBuffer* aBuffer);
+#endif
+
+#ifdef __USE_MMF_TRANSFERBUFFERS__
+	CMMFTransferBuffer* CreateTransferBufferL(TUint aBufferSize, CMMFTransferBuffer* aOldBuffer);
+#endif
+
+#ifdef __USE_MMF_PTRBUFFERS__
+	CMMFPtrBuffer* CreatePtrBufferL(TUint aBufferSize);
+#endif
+
+protected: 
+	TToneDataPathState iState;
+	MMMFHwDeviceObserver* iHwDeviceObserver;
+	CToneCodec* iCodec;
+	CToneDataPathPlayer* iAudioPlayer;
+	CToneSoundDevPlayErrorReceiver* iSoundDeviceErrorReceiver;
+	RMdaDevSound iSoundDevice;
+	CMMFDataBuffer* iSourceBuffer;
+	CMMFDataBuffer* iSoundDeviceBuffer;
+	TBool iNoMoreSourceData;
+	TBool iSinkCanReceive;
+	TUint iSourceBufferSize;
+	TUint iSoundDevBufferSize;
+	TBool iRampAudioSample;
+	
+	TTimeIntervalMicroSeconds iVolumeRamp;
+	// DEF048512
+	TInt iSampleRate;
+	TInt iChannels;
+	
+	TInt iBuffSize;
+
+	TBool iIgnoreUnderflow;
+
+#ifdef __USE_MMF_TRANSFERBUFFERS__
+	RTransferBuffer* iTransferBuffer;
+	RTransferWindow* iTransferWindow;
+#endif
+
+#ifdef __USE_MMF_PTRBUFFERS__
+	HBufC8* iPtrBufferMemoryBlock;
+#endif
+
+	};
+
+/**
+ * Internal panic
+ * @internalComponent
+ */
+inline void CToneDataPath::Panic(TInt aPanicCode)
+	{
+	_LIT(KTonePanicCategory, "ToneDataPath");
+	User::Panic(KTonePanicCategory, aPanicCode);
+	}
+
+#endif //TONEDATAPATH_H