--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/devsound/a3fdevsound/src/devsoundadaptor/cdevplaycontrol.h	Tue Feb 02 01:56:55 2010 +0200
@@ -0,0 +1,158 @@
+/*
+* Copyright (c) 2006-2009 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 CDEVPLAYCONTROL_H
+#define CDEVPLAYCONTROL_H
+
+#include <e32base.h>
+
+#include "cdevcommoncontrol.h"
+
+#include <a3f/maudiodatasupplier.h>
+#include <a3f/maudioprocessingunitobserver.h>
+#include <a3f/a3f_trace_utils.h>
+
+
+class MMMFBufferSource;
+
+/**
+ * CDevPlayControl.
+ *
+ * ?description
+ *
+ * @lib mmfdevsoundadaptation.lib
+ * @since
+ */
+
+NONSHARABLE_CLASS(CDevPlayControl) :public CDevCommonControl,
+									public MMMFAudioDataSupplier
+    {
+public:
+
+	/**
+	* Destructor.
+	* Releases all resources and deletes all objects owned by this instance.
+	*/
+	~CDevPlayControl();
+
+	static CDevPlayControl* NewL(CDevAudio* aDevAudio, MDevSoundAdaptationObserver& aDevSoundObserver);
+
+	void ConstructL(CDevAudio* aDevAudio, MDevSoundAdaptationObserver& aAdaptationObserver);
+
+	// from base class CDevAudioControl
+
+	/**
+	* Initialize playing state control components
+	* @since
+	* @return error code
+	*/
+	virtual TInt Initialize(TUid aFormat);
+
+	/**
+	* Initializes the audio device and starts the play process. This
+	* function queries and acquires the audio policy before initializing
+	* audio device. If there was an error during policy initialization,
+	* PlayError() function will be called on the observer with error code
+	* KErrAccessDenied, otherwise BufferToBeFilled() function will be called
+	* with a buffer reference. After reading data into the buffer reference
+	* passed, the client should call PlayData() to play data.
+	* The amount of data that can be played is specified in
+	* CMMFBuffer::RequestSize(). Any data that is read into buffer beyond
+	* this size will be ignored.
+	* Leaves on failure.
+	* @since
+	* @return void
+	*/
+	virtual TInt ProcessInit();
+
+	/**
+	* Plays data in the buffer at the current volume.
+	* The client should fill the buffer with audio data before calling this
+	* function. The observer gets a reference to the buffer along with the
+	* callback function BufferToBeFilled(). When playing of the audio sample
+	* is complete, successfully or otherwise, the function PlayError() on
+	* the observer is called.
+	* The last buffer of the audio stream being played should have the last
+	* buffer flag set using CMMFBuffer::SetLastBuffer(TBool). If a
+	* subsequent attempt to play the clip is made, this flag will need
+	* resetting by the client.
+	* @return void
+	*/
+	virtual void ProcessData();
+
+	/*
+	Call-back indicating that is the last buffer has been processed
+	*/
+	virtual void ProcessingFinished (MAudioStream& aStream);
+
+	// from base class MAudioDataSupplier
+
+	/**
+	* Request a buffer to be filled with audio data by the data supplier.
+	*
+	* The supplier should fill the buffer as quickly as possible and then call
+	* MBufferSource::BufferFilled() passing the filled buffer as a parameter.
+	*
+	* @param aSource a pointer to the source requesting the buffer
+	* @param aBuffer a pointer to the buffer to fill
+	*/
+	virtual void BufferToBeFilled(MMMFBufferSource* aSource, CMMFBuffer* aBuffer);
+
+	/**
+	* Indicates that all buffers previously requested by this source have become
+	* invalid and must not be used.
+	*
+	* @param aSource the source whose previous buffer requests should be ignored.
+	*/
+	virtual void DiscardBuffers(MMMFBufferSource* aSource);
+
+	// from base class CDevCommonControl
+	void FinishWithError(TInt aError);
+
+	/**
+	* Called when a ProcessingFinished callback is received
+	*
+	* @since
+	* @param TBool& aAyncCompletion
+	* @return an error code KErrNone if successful
+	*/
+	virtual TInt ProcessingFinishedReceived(TBool& aAyncCompletion);
+	
+	/*
+	Used to send a stop call when there is a error in the buffer
+	*/
+	void BufferErrorEvent();
+	
+	virtual TInt ProcessingError(TBool& aAyncCompletion);
+	
+private:
+	CDevPlayControl();
+
+private: // data
+
+	/**
+	* Casted convenience pointer to DevAudio::iAudioSource
+	* Not own.
+	*/
+	MMMFBufferSource *iBufferSource;
+
+	};
+
+#endif // CDEVPLAYCONTROL_H