sl@0: // Copyright (c) 2002-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: //
sl@0: 
sl@0: #ifndef __MMF_VIDEOINPUT_H__
sl@0: #define __MMF_VIDEOINPUT_H__
sl@0: 
sl@0: // Standard EPOC32 includes required by this header file
sl@0: #include <e32base.h>
sl@0: #include <e32std.h>
sl@0: 
sl@0: #include <e32hal.h>
sl@0: #include <e32svr.h>
sl@0: 
sl@0: // Public Media Server includes
sl@0: #include <mmf/server/mmfdatasink.h>
sl@0: #include <mmf/server/mmfdatasource.h>
sl@0: #include <mmf/server/mmfdatapath.h>
sl@0: #include <mmf/server/mmfdatasourcesink.hrh>
sl@0: 
sl@0: #include <mmf/server/mmfcodec.h>
sl@0: #include <mmf/server/mmfdatabuffer.h>
sl@0: #include <mmf/common/mmfpaniccodes.h>
sl@0: 
sl@0: #include "mmfVideoInputInterfaceUIDs.hrh"
sl@0: #ifdef SYMBIAN_ENABLE_SPLIT_HEADERS
sl@0: #include <mmf/common/mmfhelper.h>
sl@0: #endif
sl@0: // DevSound
sl@0: 
sl@0: const TUint KVideoInputDefaultFrameSize = 0x1000;
sl@0: //#define KVideoInputCanResample		//uncomment this to allow Video Input to sample rate convert
sl@0: const TUid KUidMmfVideoInput	= {KMmfUidVideoInputInterface};
sl@0: 
sl@0: class CHardwareCodec;
sl@0: 
sl@0: void Panic(TInt aPanicCode);
sl@0: 
sl@0: class MMMFVideoInput : public MDataSource
sl@0: /*
sl@0: Interface class to allow dynamic linkage to CMMFVideoInput.
sl@0: */
sl@0: 	{
sl@0: public:
sl@0: 	//factory function
sl@0: 	inline static MMMFVideoInput* NewVideoInputL(TUid aImplementationUid, const TDesC8& aInitData);
sl@0: 	//interface
sl@0: 	virtual void HWFillBufferL(CMMFBuffer* aBuffer, MDataSink* aConsumer) = 0;
sl@0: protected:
sl@0: 	//constructor
sl@0: 	inline MMMFVideoInput() : MDataSource(KUidMmfVideoInput) {};
sl@0: 	};
sl@0: 
sl@0: inline MMMFVideoInput* MMMFVideoInput::NewVideoInputL( TUid aImplementationUid,  const TDesC8& aInitData )
sl@0: 	{
sl@0: 	//make sure the cast will be ok by checking the uid is what we expect
sl@0: //	__ASSERT_ALWAYS(aImplementationUid==KUidMmfVideoInput, Panic(EMMFVideoInputPanicBadUID));
sl@0: 	MMMFVideoInput* retPtr = STATIC_CAST(MMMFVideoInput*, MDataSource::NewSourceL(aImplementationUid, aInitData));
sl@0: 	return retPtr;
sl@0: 	}
sl@0: 
sl@0: 
sl@0: class CMMFVideoInput : public CBase, public MMMFVideoInput
sl@0: /**
sl@0: The interface into DevSound
sl@0: **/
sl@0: 	{
sl@0: public:
sl@0: 
sl@0: 	static MDataSource* NewSourceL();
sl@0: 	virtual ~CMMFVideoInput();
sl@0: 
sl@0: 	//MDataSource mixin implementations
sl@0: 	virtual TFourCC SourceDataTypeCode(TMediaId /*aMediaId*/);
sl@0: 	virtual void FillBufferL(CMMFBuffer* aBuffer, MDataSink* aConsumer,TMediaId /*aMediaId*/);//called by a MDataSink to request buffer fill
sl@0: 	virtual void BufferEmptiedL(CMMFBuffer* aBuffer); //called by MDataSink to pass back emptied buffer to the source
sl@0: 	virtual TBool CanCreateSourceBuffer();
sl@0: 	virtual CMMFBuffer* CreateSourceBufferL(TMediaId /*aMediaId*/);
sl@0: 		//XXX optimal source buffer size creation may depend on the sink buffer & vice versa
sl@0: 	virtual CMMFBuffer* CreateSourceBufferL(TMediaId aMediaId, CMMFBuffer& /*aSinkBuffer*/)
sl@0: 		{return CreateSourceBufferL(aMediaId);};
sl@0: 	virtual CMMFBuffer* CreateSourceBufferL(TMediaId /*aMediaId*/, TBool &aReference);
sl@0: 		//XXX optimal source buffer size creation may depend on the sink buffer & vice versa
sl@0: 	virtual CMMFBuffer* CreateSourceBufferL(TMediaId aMediaId, CMMFBuffer& /*aSinkBuffer*/, TBool &aReference)
sl@0: 		{return CreateSourceBufferL(aMediaId, aReference);};
sl@0: 	virtual TInt SourceThreadLogon(MAsyncEventHandler& aEventHandler);
sl@0: 	virtual void SourceThreadLogoff();
sl@0: 	virtual void SourcePrimeL();
sl@0: 	virtual void SourceStopL();
sl@0: 	virtual void SourcePlayL();
sl@0: 	virtual void SetSourcePrioritySettings(const TMMFPrioritySettings& aPrioritySettings);
sl@0: 
sl@0: 	virtual void NegotiateL(MDataSink& aSink);
sl@0: 
sl@0: 	// MMMFVideoInput mixin implementations
sl@0: 	TInt BytesPlayed();
sl@0: 	void HWFillBufferL(CMMFBuffer* aBuffer, MDataSink* aConsumer); //called by a FillBufferL if using HW codec
sl@0: 
sl@0: 	TRequestStatus iBufferStatus;
sl@0: 
sl@0: protected:
sl@0: 	virtual void ConstructSourceL( const TDesC8& aInitData ) ;
sl@0: 
sl@0: private:
sl@0: 	inline CMMFVideoInput() {}
sl@0: 
sl@0: 	MAsyncEventHandler* iEventHandler;
sl@0: 
sl@0: 
sl@0: 
sl@0: private:
sl@0: 
sl@0: 	enum TCodec
sl@0: 		{
sl@0: 		EUseARMCodec=0,
sl@0: 		EUseHWCodec
sl@0: 		};
sl@0: 
sl@0: 	enum TState
sl@0: 		{
sl@0: 		EIdle=0,
sl@0: 		EDevSoundReady,
sl@0: 		EBufferEmpty
sl@0: 		};
sl@0: 
sl@0: 	enum TError
sl@0: 		{
sl@0: 		ECantCreateBuffer,
sl@0: 		EEmptyBuffer,
sl@0: 		EDevSoundNotLoaded,
sl@0: 		EUnknown
sl@0: 		};
sl@0: 
sl@0: 
sl@0: 	MDataSink* iConsumer;
sl@0: 	TState iState;
sl@0: 	CHardwareCodec* iHWCodec;
sl@0: 	CMMFBuffer* iBuffer;
sl@0: 
sl@0: 	TBool iFirstBufferRead;
sl@0: 
sl@0: 	TBool iDevSoundLoaded;
sl@0: 	TBool iStopped;
sl@0: 
sl@0: 	TError iError;
sl@0: 	TInt iMMFDevsoundError;
sl@0: 	TCodec iCodecSelect;
sl@0: 	TMMFPrioritySettings iPrioritySettings;
sl@0: 
sl@0: 	TUint iSinkSampleRate;
sl@0: 	TUint iSinkChannels;
sl@0: 	TFourCC iSinkFourCC;
sl@0: 	TBool iNeedsSWConversion;
sl@0: 	CMMFChannelAndSampleRateConverterFactory* iChannelAndSampleRateConverterFactory;
sl@0: 	CMMFChannelAndSampleRateConverter* iChannelAndSampleRateConverter;
sl@0: 	CMMFDataBuffer* iConvertBuffer;
sl@0: 	CMMFBuffer* iBufferToEmpty;
sl@0: 	CMMFBuffer* iDevSoundBuf;
sl@0: 	};
sl@0: 
sl@0: #endif