// MmfDevSoundCustomInterfaceSupport.h

// Copyright (c) 2005-2009 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:
//

/**
 @publishedPartner
 @released
 @file
*/

#ifndef MMFDEVSOUNDCUSTOMINTERFACESUPPORTCLASSES_H
#define MMFDEVSOUNDCUSTOMINTERFACESUPPORTCLASSES_H

const TUid KMmfUidDevSoundAudioResourceCustomInterface = {0x101FD9F3};
const TUid KMmfUidDevSoundEmptyBuffersCustomInterface = {0x1027379c};
const TUid KMmfUidDevSoundCancelInitializeCustomInterface = {0x102834D3};
const TUid KMmfUidDevSoundAudioClientThreadInfoCustomInterface = {0x102834A7};


/**
Custom Interface class providing support for emptying the play buffers.
*/
class MMMFDevSoundEmptyBuffers
	{	
public:
	
	/**
	Empties the play buffers below DevSound without causing the codec to be deleted.

	@return An error code indicating if the function call was successful. KErrNone on success, KErrNotSupported 
			if called in record mode, otherwise another of the system-wide error codes.
	*/
	virtual TInt EmptyBuffers() = 0;
	};	

/**
Custom Interface class providing support for canceling initialization.
*/
class MMMFDevSoundCancelInitialize
	{	
public:
	
	/** Cancels the initialization process of a CMMFDevSound object

	@return An error code indicating if the function call was successful. 
			KErrNone on success,
			KerrNotReady if this is called before InitializeL() call or after      
			the object has been initialized, 
	*/
	virtual TInt CancelInitialize() = 0;
	};	

/**
Custom Interface class providing support for setting the client thread info for devsound.
*/
class MAudioClientThreadInfo
	{	
public:
	/**
	Set client thread info for devsound if plugin implementation requires this info
	
	@param  aTid the required thread Id
	@return An error code indicating if the function call was successful.

	@capability MultimediaDD
		A process requires MultimediaDD capability to make this call. 
	*/
	virtual TInt SetClientThreadInfo(TThreadId aTid) = 0;
	};	

/*****************************************************************************/
/**
UID associated with the Custom interface MMMFDevSoundGetTimePlayed
*/
const TUid KMmfUidDevSoundTimePlayedCustomInterface = {0x10285CE4};

/**
This class provides an interface to querying current play time from DevSound.
*/	
class MMMFDevSoundTimePlayed
	{
public:
	/** Retrieves the current play time from the audio renderer.
	@param  aTime
	        A reference to TTimeIntervalMicroSeconds object which will be filled with the current play time by this function.
	@return An error code indicating if the function call was successful. 
			KErrNone on success,
			KErrNotSupported if the underlying HwDevice does not support this custominterface
	*/
	virtual TInt GetTimePlayed(TTimeIntervalMicroSeconds& aTime) = 0;
	};

/*****************************************************************************/
/**
UID associated with the Custom interface MMMFDevSoundQueryIgnoresUnderflow
*/
const TUid KMmfUidDevSoundQueryIgnoresUnderflowCustomInterface = {0x10285E7B};

/**
This class provides an interface for querying DevSound whether it ignores the underflow errors from the sound driver.
*/	
class MMMFDevSoundQueryIgnoresUnderflow
	{
public:
	/** Queries the devsound whether it ignores the underflow errors from the sound driver
	@return ETrue 	if the devsound ignores all the underflow errors from the sound driver except for the last buffer. That means DevSound
					propagates the underflow error from sound driver to its clients only when client sets the last buffer flag on the CMMFBuffer type buffer.
			EFalse 	if devsound propagates the underflow errors from the sound driver in all the cases
	*/
	virtual TBool QueryIgnoresUnderflow() = 0;
	};


const TUid KMmfUidDevSoundTruePauseCustomInterface = {0x1028643E};

/**
This class provides an interface to be able to Resume from DevSound.
@publishedPartner
@released
*/	
class MMMFDevSoundTruePause
	{
public:
	/** Queries the devsound whether it supports True Pause or not
	This call is only valid when DevSound is initialized
	@return ETrue if the current DevSound configuration does support this feature
			EFalse otherwise
	*/
	virtual TBool IsResumeSupported() = 0;

	/** Resume the playback, recording or tone playing that was paused
	@return An error code indicating if the function call was successful. 
			KErrNone on success,
			KErrNotReady when is DevSound is not in pause
			KErrNotSupported if the DevSound configuration does support this feature
	*/
	virtual TInt Resume() = 0;
	};


#endif // MMFDEVSOUNDCUSTOMINTERFACESUPPORTCLASSES_H