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// Copyright (c) 2003-2009 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 __MMFSWCODECDATAPATH_H__
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#define __MMFSWCODECDATAPATH_H__
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#include <e32base.h>
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#include <mmf/server/mmfdatabuffer.h>
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#ifdef SYMBIAN_MDF_SHAREDCHUNK_SOUNDDRIVER
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#include "mdasoundadapter.h"
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#else
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#include <mdasound.h>
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_LIT(KPddFileName,"ESDRV.PDD");
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_LIT(KLddFileName,"ESOUND.LDD");
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#endif
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class MMMFHwDeviceObserver;
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class CMMFSwCodec;
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/*
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Interface for setting desired sample rate, channels and for setting Gain/Volume
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*/
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const TUid KUidSwSetParamInterface = {0x1028707E};
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class MSwSetParamInterface
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{
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public:
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virtual TInt SetSampleRate(TInt aSampleRate)=0;
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virtual TInt SetNumChannels(TInt aNumChannels)=0;
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virtual TInt SetGain(TInt aGain)=0;
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virtual TInt GetBufferSizes(TInt& aMinSize, TInt& aMaxSize)=0;
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};
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/*
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* Interface for discovering various parameters
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*/
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const TUid KUidSwInfoInterface = {0x1028707F};
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class MSwInfoInterface
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{
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public:
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virtual TInt GetSupportedSampleRates(RArray<TInt>& aSupportedSampleRates)=0;
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};
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/**
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* Base class for the datapath internal to the Sw codec wrapper
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* @internalComponent
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*/
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class CMMFSwCodecDataPath : public CBase
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{
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public:
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enum TSwCodecDataPathState
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{
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EStopped,
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EPlaying,
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EPaused
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};
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public:
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virtual ~CMMFSwCodecDataPath();
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virtual TInt SetObserver(MMMFHwDeviceObserver& aHwObserver) = 0;
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virtual TInt AddCodec(CMMFSwCodec& aCodec) = 0;
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virtual TInt Start() = 0;
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virtual void Stop() = 0;
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virtual void Pause() = 0;
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virtual RMdaDevSound& Device() = 0;
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virtual void BufferFilledL(CMMFDataBuffer& aBuffer) = 0;
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virtual void BufferEmptiedL(const CMMFDataBuffer& aBuffer) = 0;
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virtual void SoundDeviceException(TInt aError) = 0;
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virtual TSwCodecDataPathState State() const = 0;
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virtual TAny* CustomInterface(TUid aInterfaceId);
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protected:
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CMMFSwCodecDataPath() {};
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inline void Panic(TInt aPanicCode);
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void ConstructL();
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#ifdef __CYCLE_MMF_DATABUFFERS__
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CMMFDataBuffer* CycleAudioBuffer(CMMFDataBuffer* aBuffer);
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#endif
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#ifdef __USE_MMF_TRANSFERBUFFERS__
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CMMFTransferBuffer* CreateTransferBufferL(TUint aBufferSize, CMMFTransferBuffer* aOldBuffer);
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#endif
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#ifdef __USE_MMF_PTRBUFFERS__
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CMMFPtrBuffer* CreatePtrBufferL(TUint aBufferSize);
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#endif
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protected:
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MMMFHwDeviceObserver* iHwDeviceObserver;
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CMMFSwCodec* iCodec;
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#ifdef __USE_MMF_TRANSFERBUFFERS__
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RTransferBuffer* iTransferBuffer;
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RTransferWindow* iTransferWindow;
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#endif
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#ifdef __USE_MMF_PTRBUFFERS__
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HBufC8* iPtrBufferMemoryBlock;
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#endif
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};
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/**
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* Internal panic
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* @internalComponent
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*/
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inline void CMMFSwCodecDataPath::Panic(TInt aPanicCode)
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{
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_LIT(KMMFSwCodecWrapperPanicCategory, "MMFSwCodecWrapper");
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User::Panic(KMMFSwCodecWrapperPanicCategory, aPanicCode);
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}
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/**
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* Extended datapath class with state info
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* @internalComponent
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*/
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class CMMFSwCodecDataPathX : public CMMFSwCodecDataPath
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{
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protected:
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CMMFSwCodecDataPathX(): CMMFSwCodecDataPath() {}
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// from CMMFSwCodecDataPath
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TSwCodecDataPathState State() const {return iState;}
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TSwCodecDataPathState iState;
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};
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#endif
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