--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/devsound/a3fdevsound/inc/devsoundadaptationinfo.h	Tue Feb 02 01:56:55 2010 +0200
@@ -0,0 +1,128 @@
+// Copyright (c) 2007-2009 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 DEVSOUNDADAPTATIONINFO_H
+#define DEVSOUNDADAPTATIONINFO_H
+
+/**
+@publishedPartner 
+@released
+@file
+*/
+
+//  INCLUDES
+
+#include <e32std.h>
+#include <e32base.h>
+#include <a3f/a3ffourcclookup.h>
+
+class MA3FDevSoundAdaptationInfoObserver;
+
+const TUid KTruePauseCustomInterfaceTypeUid = {0x1028643F};
+
+/**
+Custom interface class for query a3f adaptation about if resume is supported
+*/
+class MTruePauseCustomInterface
+	{
+public:
+	/**
+	Returns ETrue when True Pause is supported.
+	*/ 
+	virtual TBool IsResumeSupported(TUid aCodecType, TUid aFormat) = 0;
+	};
+
+
+// CLASS DECLARATION
+
+/**
+An interface to a A3FDevsoundAdaptationInfo.
+A3FDevSoundAdaptationInfo is a replacable component that should correspond to the underlying
+A3F adaptation, and provides information to the DevSound Adaptor information it cannot otherwise
+obtain. If the underlying A3F adaptation changes, then potentially so should the implementation of
+A3FDevSoundAdaptationInfo. Additionally the MaxGain and MaxVolume values should be set to reflect
+those required for the specific product.
+@lib devsoundadaptationinfo.lib
+*/
+class CA3FDevSoundAdaptationInfo : public CBase
+	{
+public:
+	/**
+	Constructs and returns a pointer to a new CA3FDevSoundAdaptationInfo object.
+	Leaves on failure.
+	@return CA3FDevSoundAdaptationInfo* - on success, pointer to new class instance.
+	This call returns ownership, as in the standard NewL() pattern
+	*/
+	IMPORT_C static CA3FDevSoundAdaptationInfo* NewL(MA3FDevSoundAdaptationInfoObserver& aAdaptationInfoObserver, CFourCCConvertor& aFourCcConvertor);
+
+	/**
+	Destructor.
+	*/
+	~CA3FDevSoundAdaptationInfo();
+
+	/**
+	Requests Maximun Valid Gain/Volume. This is an asynchronous call. If error return is KErrNone,
+	the result will be returned in subsequent RequestMaxGainComplete() call.
+	@param aCodecType KUidAudioEncoder for MaxGain, KUidAudioDecoder for MaxVolume
+	@return KErrNone if successfull, else corresponding error code
+	*/
+	virtual TInt RequestMaxGain(TUid aCodecType)=0;
+
+
+	/**
+	Requests a list of supported FourCC codes. This is an asynchronous call. If error return is KErrNone,
+	the completion will be indicated by RequestSupportedFormatsComplete().
+	@param aCodecType KUidAudioEncoder for supported encoder formats, KUidAudioDecoder for supported decoder formats
+	@param aSupportedFormats The results are appended to this array.
+	@return KErrNone if successfull, else corresponding error code
+	*/
+	virtual TInt RequestSupportedFormats(TUid aCodecType, RArray<TUid>& aSupportedFormats)=0;
+
+	/**
+	Queries A3F adaptation about if True Pause is supported 
+	the completion will be indicated by RequestSupportedFormatsComplete().
+	@param aCodecType KUidAudioEncoder for encoder format, KUidAudioDecoder for decoder format
+	@param aFormat The format to be queried
+	@return ETrue if True Pause is supported, EFalse otherwise
+	*/
+	inline TBool IsResumeSupported(TUid aCodecType, TUid aFormat);
+
+
+protected:
+	/**
+	Constructor
+	*/
+	CA3FDevSoundAdaptationInfo();
+	};
+
+inline TBool CA3FDevSoundAdaptationInfo::IsResumeSupported(TUid aCodecType, TUid aFormat)
+	{
+	TBool supported = EFalse;
+	
+	// Extension pattern
+	TAny* interface = NULL;
+	TInt err = Extension_(KTruePauseCustomInterfaceTypeUid.iUid, interface, NULL); 
+	if(err == KErrNone)
+		{
+		MTruePauseCustomInterface* truePause = static_cast<MTruePauseCustomInterface*>(interface);
+		supported = truePause->IsResumeSupported(aCodecType, aFormat);
+		}	
+	return supported;
+	}
+
+#endif // DEVSOUNDADAPTATIONINFO_H
+
+//end of file
+