1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/mm/devsound/devsoundrefplugin/src/swcodecwrapper/mmfSwCodecDataPath.h	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,139 @@
     1.4 +// Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies).
     1.5 +// All rights reserved.
     1.6 +// This component and the accompanying materials are made available
     1.7 +// under the terms of "Eclipse Public License v1.0"
     1.8 +// which accompanies this distribution, and is available
     1.9 +// at the URL "http://www.eclipse.org/legal/epl-v10.html".
    1.10 +//
    1.11 +// Initial Contributors:
    1.12 +// Nokia Corporation - initial contribution.
    1.13 +//
    1.14 +// Contributors:
    1.15 +//
    1.16 +// Description:
    1.17 +//
    1.18 +
    1.19 +#ifndef __MMFSWCODECDATAPATH_H__
    1.20 +#define __MMFSWCODECDATAPATH_H__
    1.21 +
    1.22 +#include <e32base.h>
    1.23 +#include <mmf/server/mmfdatabuffer.h>
    1.24 +
    1.25 +
    1.26 +#ifdef SYMBIAN_MDF_SHAREDCHUNK_SOUNDDRIVER
    1.27 +	#include "mdasoundadapter.h"
    1.28 +#else
    1.29 +	#include <mdasound.h>
    1.30 +	_LIT(KPddFileName,"ESDRV.PDD");
    1.31 +	_LIT(KLddFileName,"ESOUND.LDD");
    1.32 +#endif
    1.33 +	
    1.34 +class MMMFHwDeviceObserver;
    1.35 +class CMMFSwCodec;
    1.36 +
    1.37 +/*
    1.38 +Interface for setting desired sample rate, channels and for setting Gain/Volume
    1.39 +*/
    1.40 +const TUid KUidSwSetParamInterface = {0x1028707E}; 
    1.41 +class MSwSetParamInterface
    1.42 +	{
    1.43 +public:
    1.44 +	virtual TInt SetSampleRate(TInt aSampleRate)=0;
    1.45 +	virtual TInt SetNumChannels(TInt aNumChannels)=0;
    1.46 +	virtual TInt SetGain(TInt aGain)=0;
    1.47 +	virtual TInt GetBufferSizes(TInt& aMinSize, TInt& aMaxSize)=0;
    1.48 +	};
    1.49 +
    1.50 +/*
    1.51 + * Interface for discovering various parameters
    1.52 + */
    1.53 +const TUid KUidSwInfoInterface = {0x1028707F}; 
    1.54 +class MSwInfoInterface
    1.55 +    {
    1.56 +public:
    1.57 +    virtual TInt GetSupportedSampleRates(RArray<TInt>& aSupportedSampleRates)=0; 
    1.58 +    };
    1.59 +	
    1.60 +/**
    1.61 + *  Base class for the datapath internal to the Sw codec wrapper
    1.62 + *  @internalComponent
    1.63 + */
    1.64 +class CMMFSwCodecDataPath : public CBase
    1.65 +	{ 
    1.66 +public: 
    1.67 +	enum TSwCodecDataPathState
    1.68 +	{
    1.69 +	EStopped,
    1.70 +	EPlaying,
    1.71 +	EPaused
    1.72 +	};
    1.73 +public:	
    1.74 +	virtual	~CMMFSwCodecDataPath(); 
    1.75 +	virtual TInt SetObserver(MMMFHwDeviceObserver& aHwObserver) = 0;
    1.76 +	virtual TInt AddCodec(CMMFSwCodec& aCodec) = 0;
    1.77 +	virtual TInt Start() = 0;
    1.78 +	virtual void Stop() = 0;
    1.79 +	virtual void Pause() = 0;
    1.80 +	virtual RMdaDevSound& Device() = 0;
    1.81 +	virtual void BufferFilledL(CMMFDataBuffer& aBuffer) = 0;
    1.82 +	virtual void BufferEmptiedL(const CMMFDataBuffer& aBuffer) = 0;
    1.83 +	virtual void SoundDeviceException(TInt aError) = 0;
    1.84 +	virtual TSwCodecDataPathState State() const = 0;
    1.85 +	virtual TAny* CustomInterface(TUid aInterfaceId);
    1.86 +protected:	
    1.87 +	CMMFSwCodecDataPath() {};
    1.88 +	inline void Panic(TInt aPanicCode);
    1.89 +	void ConstructL();
    1.90 +
    1.91 +#ifdef __CYCLE_MMF_DATABUFFERS__
    1.92 +	CMMFDataBuffer* CycleAudioBuffer(CMMFDataBuffer* aBuffer);
    1.93 +#endif
    1.94 +
    1.95 +#ifdef __USE_MMF_TRANSFERBUFFERS__
    1.96 +	CMMFTransferBuffer* CreateTransferBufferL(TUint aBufferSize, CMMFTransferBuffer* aOldBuffer);
    1.97 +#endif
    1.98 +
    1.99 +#ifdef __USE_MMF_PTRBUFFERS__
   1.100 +	CMMFPtrBuffer* CreatePtrBufferL(TUint aBufferSize);
   1.101 +#endif
   1.102 +
   1.103 +protected: 
   1.104 +	MMMFHwDeviceObserver* iHwDeviceObserver;
   1.105 +	CMMFSwCodec* iCodec;
   1.106 +#ifdef __USE_MMF_TRANSFERBUFFERS__
   1.107 +	RTransferBuffer* iTransferBuffer;
   1.108 +	RTransferWindow* iTransferWindow;
   1.109 +#endif
   1.110 +
   1.111 +#ifdef __USE_MMF_PTRBUFFERS__
   1.112 +	HBufC8* iPtrBufferMemoryBlock;
   1.113 +#endif
   1.114 +	};
   1.115 +
   1.116 +/**
   1.117 + * Internal panic
   1.118 + * @internalComponent
   1.119 + */
   1.120 +inline void CMMFSwCodecDataPath::Panic(TInt aPanicCode)
   1.121 +	{
   1.122 +	_LIT(KMMFSwCodecWrapperPanicCategory, "MMFSwCodecWrapper");
   1.123 +	User::Panic(KMMFSwCodecWrapperPanicCategory, aPanicCode);
   1.124 +	}
   1.125 +
   1.126 +/**
   1.127 + * Extended datapath class with state info  
   1.128 + * @internalComponent 
   1.129 + */
   1.130 +class CMMFSwCodecDataPathX : public CMMFSwCodecDataPath
   1.131 +    {
   1.132 +protected: 
   1.133 +    CMMFSwCodecDataPathX(): CMMFSwCodecDataPath() {}
   1.134 +    
   1.135 +    // from CMMFSwCodecDataPath
   1.136 +    TSwCodecDataPathState State() const {return iState;}
   1.137 +
   1.138 +    TSwCodecDataPathState iState;
   1.139 +    };
   1.140 +
   1.141 +#endif
   1.142 +