os/mm/devsound/sounddevbt/src/swcodecwrapper/mmfBtSwCodecDataPath.h
author sl
Tue, 10 Jun 2014 14:32:02 +0200
changeset 1 260cb5ec6c19
permissions -rw-r--r--
Update contrib.
     1 // Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).
     2 // All rights reserved.
     3 // This component and the accompanying materials are made available
     4 // under the terms of "Eclipse Public License v1.0"
     5 // which accompanies this distribution, and is available
     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
     7 //
     8 // Initial Contributors:
     9 // Nokia Corporation - initial contribution.
    10 //
    11 // Contributors:
    12 //
    13 // Description:
    14 //
    15 
    16 #ifndef __MMFBTSWCODECDATAPATH_H__
    17 #define __MMFBTSWCODECDATAPATH_H__
    18 
    19 #include <e32base.h>
    20 #include <mmf/server/mmfdatabuffer.h>
    21 
    22 class MMMFHwDeviceObserver;
    23 class CMMFSwCodec;
    24 
    25 /**
    26  *  Base class for the datapath internal to the Sw codec wrapper
    27  *  @internalComponent
    28  */
    29 class CMMFSwCodecDataPath : public CBase
    30 	{ 
    31 public: 
    32 	enum TSwCodecDataPathState
    33 	{
    34 	EStopped,
    35 	EPlaying,
    36 	EPaused
    37 	};
    38 public:	
    39 	virtual	~CMMFSwCodecDataPath(); 
    40 	virtual TInt SetObserver(MMMFHwDeviceObserver& aHwObserver) = 0;
    41 	virtual TInt AddCodec(CMMFSwCodec& aCodec) = 0;
    42 	virtual TInt Start() = 0;
    43 	virtual void Stop() = 0;
    44 	virtual void Pause() = 0;
    45 	virtual void BufferFilledL(CMMFDataBuffer& aBuffer) = 0;
    46 	virtual void BufferEmptiedL(const CMMFDataBuffer& aBuffer) = 0;
    47 	virtual void SoundDeviceException(TInt aError) = 0;
    48 	virtual TSwCodecDataPathState State() {return iState;};
    49 protected:	
    50 	CMMFSwCodecDataPath() {};
    51 	inline void Panic(TInt aPanicCode);
    52 	void ConstructL();
    53 
    54 #ifdef __CYCLE_MMF_DATABUFFERS__
    55 	CMMFDataBuffer* CycleAudioBuffer(CMMFDataBuffer* aBuffer);
    56 #endif
    57 
    58 #ifdef __USE_MMF_TRANSFERBUFFERS__
    59 	CMMFTransferBuffer* CreateTransferBufferL(TUint aBufferSize, CMMFTransferBuffer* aOldBuffer);
    60 #endif
    61 
    62 #ifdef __USE_MMF_PTRBUFFERS__
    63 	CMMFPtrBuffer* CreatePtrBufferL(TUint aBufferSize);
    64 #endif
    65 
    66 protected: 
    67 	TSwCodecDataPathState iState;
    68 	MMMFHwDeviceObserver* iHwDeviceObserver;
    69 	CMMFSwCodec* iCodec;
    70 #ifdef __USE_MMF_TRANSFERBUFFERS__
    71 	RTransferBuffer* iTransferBuffer;
    72 	RTransferWindow* iTransferWindow;
    73 #endif
    74 
    75 #ifdef __USE_MMF_PTRBUFFERS__
    76 	HBufC8* iPtrBufferMemoryBlock;
    77 #endif
    78 
    79 	};
    80 
    81 /**
    82  * Internal panic
    83  * @internalComponent
    84  */
    85 inline void CMMFSwCodecDataPath::Panic(TInt aPanicCode)
    86 	{
    87 	_LIT(KMMFSwCodecWrapperPanicCategory, "MMFSwCodecWrapper");
    88 	User::Panic(KMMFSwCodecWrapperPanicCategory, aPanicCode);
    89 	}
    90 
    91 #endif
    92