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// Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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//
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#ifndef DEVSOUNDADAPTATIONINFO_H
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#define DEVSOUNDADAPTATIONINFO_H
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/**
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@publishedPartner
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@released
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@file
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*/
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// INCLUDES
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#include <e32std.h>
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#include <e32base.h>
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#include <a3f/a3ffourcclookup.h>
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class MA3FDevSoundAdaptationInfoObserver;
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const TUid KTruePauseCustomInterfaceTypeUid = {0x1028643F};
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/**
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Custom interface class for query a3f adaptation about if resume is supported
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*/
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class MTruePauseCustomInterface
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{
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public:
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/**
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Returns ETrue when True Pause is supported.
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*/
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virtual TBool IsResumeSupported(TUid aCodecType, TUid aFormat) = 0;
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};
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// CLASS DECLARATION
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/**
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An interface to a A3FDevsoundAdaptationInfo.
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A3FDevSoundAdaptationInfo is a replacable component that should correspond to the underlying
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A3F adaptation, and provides information to the DevSound Adaptor information it cannot otherwise
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obtain. If the underlying A3F adaptation changes, then potentially so should the implementation of
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A3FDevSoundAdaptationInfo. Additionally the MaxGain and MaxVolume values should be set to reflect
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those required for the specific product.
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@lib devsoundadaptationinfo.lib
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*/
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class CA3FDevSoundAdaptationInfo : public CBase
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{
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public:
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/**
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Constructs and returns a pointer to a new CA3FDevSoundAdaptationInfo object.
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Leaves on failure.
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@return CA3FDevSoundAdaptationInfo* - on success, pointer to new class instance.
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This call returns ownership, as in the standard NewL() pattern
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*/
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IMPORT_C static CA3FDevSoundAdaptationInfo* NewL(MA3FDevSoundAdaptationInfoObserver& aAdaptationInfoObserver, CFourCCConvertor& aFourCcConvertor);
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/**
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Destructor.
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*/
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~CA3FDevSoundAdaptationInfo();
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/**
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Requests Maximun Valid Gain/Volume. This is an asynchronous call. If error return is KErrNone,
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the result will be returned in subsequent RequestMaxGainComplete() call.
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@param aCodecType KUidAudioEncoder for MaxGain, KUidAudioDecoder for MaxVolume
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@return KErrNone if successfull, else corresponding error code
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*/
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virtual TInt RequestMaxGain(TUid aCodecType)=0;
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/**
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Requests a list of supported FourCC codes. This is an asynchronous call. If error return is KErrNone,
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the completion will be indicated by RequestSupportedFormatsComplete().
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@param aCodecType KUidAudioEncoder for supported encoder formats, KUidAudioDecoder for supported decoder formats
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@param aSupportedFormats The results are appended to this array.
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@return KErrNone if successfull, else corresponding error code
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*/
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virtual TInt RequestSupportedFormats(TUid aCodecType, RArray<TUid>& aSupportedFormats)=0;
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/**
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Queries A3F adaptation about if True Pause is supported
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the completion will be indicated by RequestSupportedFormatsComplete().
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@param aCodecType KUidAudioEncoder for encoder format, KUidAudioDecoder for decoder format
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@param aFormat The format to be queried
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@return ETrue if True Pause is supported, EFalse otherwise
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*/
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inline TBool IsResumeSupported(TUid aCodecType, TUid aFormat);
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protected:
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/**
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Constructor
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*/
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CA3FDevSoundAdaptationInfo();
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};
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inline TBool CA3FDevSoundAdaptationInfo::IsResumeSupported(TUid aCodecType, TUid aFormat)
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{
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TBool supported = EFalse;
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// Extension pattern
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TAny* interface = NULL;
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TInt err = Extension_(KTruePauseCustomInterfaceTypeUid.iUid, interface, NULL);
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if(err == KErrNone)
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{
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MTruePauseCustomInterface* truePause = static_cast<MTruePauseCustomInterface*>(interface);
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supported = truePause->IsResumeSupported(aCodecType, aFormat);
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}
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return supported;
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}
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#endif // DEVSOUNDADAPTATIONINFO_H
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//end of file
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