// Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

//

#ifndef ICLEXTPROXYSTUBUTIL_H

#define ICLEXTPROXYSTUBUTIL_H

#include <icl/imageconversionextensionintf.h>

// forward declarations

class TExecuteCommandParamsBase;

class TExecuteCommandParamsAsyncBase;

class CThreadDecoderRelay;

class CThreadEncoderRelay;

class MFrameworkExtAsyncInterface;

class CImageConvProxyBase;

class CImageConvStubBase;

class MImageConvExtensionThreadedSupport;

/*

Static class that creates client-side proxy and plugin-side stub objects

required for marshalling data across the ICL framework.

*/

class ProxyStubUtility

	{

public:

	static CImageConvProxyBase* GetNewProxyL(TUid aUid, MImageConvExtensionThreadedSupport* aParent);

	static CImageConvProxyBase* GetNewStraightProxyL(TUid aUid, MFrameworkExtAsyncInterface* aStatusOwner,

												  	 RThread& aRequestThread);

	static CImageConvStubBase* NewStubL(TUid aUid,

										MImageConvExtension* aExtension,

										MFrameworkExtAsyncInterface* aStatusOwner,

										RThread& aRequestThread);

	};

/*

Used by the proxy/stub to identify the function call implementation of the

MImageConvExtension interface.

*/

enum TImgConvExtCmd

	{

	EImgConvExtUid = 0,

	EImgConvExtIncrementRef = 1,

	EImgConvExtRelease = 2

	};

/*

Used by the proxy/stub to identify the function call implementation of the

MImageConvOperation interface.

*/

enum TImgConvTransformExtCmd

	{

	EImgConvExtCapabilities = EImgConvExtRelease+1,

	EImgConvExtAddOperationL = EImgConvExtRelease+2,

	EImgConvExtClearOperationStack = EImgConvExtRelease+3

	};

/*

Used by the proxy/stub to identify the function call implementation of the

MImageConvScaler interface.

*/

enum TImgConvScalerExtCmd

	{

	EImgConvExtGetCapabilitiesScaler = EImgConvExtRelease+1,

	EImgConvExtSetScalingLSize = EImgConvExtRelease+2,

	EImgConvExtSetScalingLCoeff = EImgConvExtRelease+3

	};

/*

Used by the proxy/stub to identify the function call implementation of the

MImageConvStreamedDecode interface.

*/

enum TImgConvStreamedDecodeExtCmd

	{

	EImgConvExtGetBlocks = EImgConvExtRelease+1,

	EImgConvExtGetBufferSize = EImgConvExtRelease+2,

	EImgConvExtGetNextBlocks = EImgConvExtRelease+3,

	EImgConvExtGetCapabilitiesStreamDec = EImgConvExtRelease+4,

	EImgConvExtGetSupportedFormatsLStreamDec = EImgConvExtRelease+5,

	EImgConvExtInitFrameLStreamDec = EImgConvExtRelease+6

	};

/*

Used by the proxy/stub to identify the function call implementation of the

MImageConvStreamedEncode interface.

*/

enum TImgConvStreamedEncodeExtCmd

	{

	EImgConvExtGetSupportedFormatsLStreamEnc = EImgConvExtRelease+1,

	EImgConvExtGetCapabilitiesStreamEnc = EImgConvExtRelease+2,

	EImgConvExtInitFrameLStreamEnc = EImgConvExtRelease+3,

	EImgConvExtAppendBlocks = EImgConvExtRelease+4,

	EImgConvExtAddBlocks = EImgConvExtRelease+5,

	EImgConvExtComplete = EImgConvExtRelease+6

	};

/*

Used by the proxy/stub to identify the function call implementation of the

MImageConvPrepare interface.

*/

enum TImgConvPrepareExtCmd

	{

	EImgConvExtPrepare = EImgConvExtRelease+1

	};

/*

Abstract class that all Proxy classes inherit from.  Permits the

CImageConvExtensionCache to cleanup the Proxys correctly.

@see CImageConvExtensionCache

*/

NONSHARABLE_CLASS( CImageConvProxyBase ) : public CBase

	{

public:

	virtual ~CImageConvProxyBase() {};

	virtual void SetupExtension(MImageConvExtension*& aExtension) = 0;

	};

/*

Abstract class that all Stub classes inherit from.  Permits the

CSubThreadEncoderRelay to cleanup the Stubs correctly.

@see CSubThreadEncoderRelay

*/

NONSHARABLE_CLASS( CImageConvStubBase ) : public CBase

	{

public:

	virtual TUid Uid() const = 0;

	virtual void HandleExecuteCommandL(TExecuteCommandParamsBase& aExecuteCommandBase) = 0;

	virtual void HandleExecuteAsyncCommand(TExecuteCommandParamsAsyncBase& aExecuteCommandBase) = 0;

	};

/*

Supports ICL client side extensions in calling the plugin-side

MImageConvOperation implementation.

Used only in the single-threaded operations.

@see MImageConvOperation

*/

NONSHARABLE_CLASS( CImageConvOperationStraightProxy ) :	public CImageConvProxyBase,

								 						public MImageConvOperation

	{

public:

	static CImageConvOperationStraightProxy* NewL(MFrameworkExtAsyncInterface* aStatusOwner, RThread& aRequestThread);

	~CImageConvOperationStraightProxy();

	// From CImageConvProxyBase

	void SetupExtension(MImageConvExtension*& aExtension);

	// From MImageConvOperation

	TUid Uid() const;

	void IncrementRef();

	void Release();

	TUint Capabilities() const;

	void AddOperationL(TImageConvOperation::TOperation aOperation);

	void ClearOperationStack();

private:

	CImageConvOperationStraightProxy(MFrameworkExtAsyncInterface* aStatusOwner, RThread& aRequestThread);

private:

	MImageConvOperation* iExtension;

	MFrameworkExtAsyncInterface* iStatusOwner;

	RThread* iThread;

	};	

/*

Supports ICL client side extensions in calling the plugin-side

MImageConvOperation implementation.

Used only in the threaded operations.

@see MImageConvOperation

@see CImageConvOperationStub

*/

NONSHARABLE_CLASS( CImageConvOperationProxy ) :	public CImageConvProxyBase,

								 				public MImageConvOperation

	{

public:

	static CImageConvOperationProxy* NewL(MImageConvExtensionThreadedSupport* aParent);

	// From CImageConvProxyBase

	void SetupExtension(MImageConvExtension*& aExtension);

	// From MImageConvOperation

	TUid Uid() const;

	void IncrementRef();

	void Release();

	TUint Capabilities() const;

	void AddOperationL(TImageConvOperation::TOperation aOperation);

	void ClearOperationStack();

private:

	explicit CImageConvOperationProxy(MImageConvExtensionThreadedSupport* aParent);

private:

	MImageConvExtensionThreadedSupport* iParent;

	};

/*

Plugin-side stub class that relays calls from the operation proxy to the

MImageConvOperation implementation.

Used only in the threaded operations.

@see MImageConvOperation

@see CImageConvOperationProxy

*/

NONSHARABLE_CLASS( CImageConvOperationStub ) :	public CImageConvStubBase

	{	

public:

	static CImageConvOperationStub* NewL(MImageConvExtension* aExtension, MFrameworkExtAsyncInterface* aStatusOwner, RThread& aRequestThread);

	~CImageConvOperationStub();

	// From CImageConvStubBase

	TUid Uid() const;

	void HandleExecuteCommandL(TExecuteCommandParamsBase& aExecuteCommandBase);

	void HandleExecuteAsyncCommand(TExecuteCommandParamsAsyncBase& aExecuteCommandBase);

private:

	explicit CImageConvOperationStub(MImageConvExtension* aExtension, MFrameworkExtAsyncInterface* aStatusOwner, RThread& aRequestThread);

private:

	MImageConvOperation* iExtension;

	MFrameworkExtAsyncInterface* iStatusOwner;

	RThread* iThread;

	};

/*

Supports ICL client side extensions in calling the plugin-side

MImageConvScaler implementation.

Used only in the single-threaded operations.

@see MImageConvScaler

*/

NONSHARABLE_CLASS( CImageConvScalerStraightProxy ) : public CImageConvProxyBase, 

							  				 		 public MImageConvScaler

	{

public:

	static CImageConvScalerStraightProxy* NewL(MFrameworkExtAsyncInterface* aStatusOwner, RThread& aRequestThread);

	~CImageConvScalerStraightProxy();

	// From CImageConvProxyBase

	void SetupExtension(MImageConvExtension*& aExtension);

	// From MImageConvScaler

	TUid Uid() const;

	void IncrementRef();

	void Release();

	void GetCapabilities(TScalerCaps& aCaps) const;

	void SetScalingL(const TSize& aDesiredSize, TImageConvScaler::TScalerQuality aQuality, TBool aLockAspectRatio);

	void SetScalingL(TInt aScalingCoeff, TImageConvScaler::TScalerQuality aScalingQuality);

private:

	CImageConvScalerStraightProxy(MFrameworkExtAsyncInterface* aStatusOwner, RThread& aRequestThread);

private:

	MImageConvScaler* iExtension;

	MFrameworkExtAsyncInterface* iStatusOwner;

	RThread* iThread;

	};

/*

Supports ICL client side extensions in calling the plugin-side

MImageConvScaler implementation.

Used only in the threaded operations.

@see MImageConvScaler

@see CImageConvScalerStub

*/

NONSHARABLE_CLASS( CImageConvScalerProxy ) : public CImageConvProxyBase, 

							  				 public MImageConvScaler

	{

public:

	static CImageConvScalerProxy* NewL(MImageConvExtensionThreadedSupport* aParent);

	// From CImageConvProxyBase

	void SetupExtension(MImageConvExtension*& aExtension);

	// From MImageConvScaler

	TUid Uid() const;

	void IncrementRef();

	void Release();

	void GetCapabilities(TScalerCaps& aCaps) const;

	void SetScalingL(const TSize& aDesiredSize, TImageConvScaler::TScalerQuality aQuality, TBool aLockAspectRatio);

	void SetScalingL(TInt aScalingCoeff, TImageConvScaler::TScalerQuality aScalingQuality);

private:

	explicit CImageConvScalerProxy(MImageConvExtensionThreadedSupport* aParent);

private:

	MImageConvExtensionThreadedSupport* iParent;

	};

/*

Plugin-side stub class that relays calls from the scaler proxy to the

MImageConvScaler implementation.

Used only in the threaded operations.

@see MImageConvScaler

@see CImageConvScalerProxy

*/

NONSHARABLE_CLASS( CImageConvScalerStub ) :	public CImageConvStubBase

	{	

public:

	static CImageConvScalerStub* NewL(MImageConvExtension* aExtension, MFrameworkExtAsyncInterface* aStatusOwner, RThread& aRequestThread);

	~CImageConvScalerStub();

	// From CImageConvStubBase

	TUid Uid() const;

	void HandleExecuteCommandL(TExecuteCommandParamsBase& aExecuteCommandBase);

	void HandleExecuteAsyncCommand(TExecuteCommandParamsAsyncBase& aExecuteCommandBase);

private:

	explicit CImageConvScalerStub(MImageConvExtension* aExtension, MFrameworkExtAsyncInterface* aStatusOwner, RThread& aRequestThread);

private:

	MImageConvScaler* iExtension;

	MFrameworkExtAsyncInterface* iStatusOwner;

	RThread* iThread;

	};

/*

Supports ICL client side extensions in calling the plugin-side

MImageConvStreamedDecode implementation.

Used only in the single-threaded operations.

@see MImageConvStreamedDecode

*/

NONSHARABLE_CLASS( CImageConvStreamedDecodeStraightProxy ) : public CImageConvProxyBase,

									  				 		 public MImageConvStreamedDecode

	{

public:

	static CImageConvStreamedDecodeStraightProxy* NewL(MFrameworkExtAsyncInterface* aStatusOwner, RThread& aRequestThread);

	~CImageConvStreamedDecodeStraightProxy();

	// From CImageConvProxyBase

	void SetupExtension(MImageConvExtension*& aExtension);

	// From MImageConvStreamedDecode

	TUid Uid() const;

	void IncrementRef();

	void Release();

	void GetSupportedFormatsL(RArray<TUid>& aFormats, TUid& aOptimalFormat) const;

	void GetCapabilities(TUid aFormat, TInt aFrameNumber, TDecodeStreamCaps& aCaps) const;

	TInt GetBufferSize(TUid aFormat, TSize& aBlockSizeInPixels, TInt aNumBlocks) const;

	void InitFrameL(TUid aFormat, TInt aFrameNumber, TDecodeStreamCaps::TNavigation aNavigation);

	void GetBlocks(TRequestStatus* aStatus, CImageFrame* aFrame, TInt aSeqPosition, TInt aNumBlocksToGet, TInt* aNumBlocksRead);

	void GetNextBlocks(TRequestStatus* aStatus, CImageFrame* aFrame, TInt aNumBlocksToGet, TInt* aNumBlocksRead, TBool* aHaveMoreBlocks);

private:

	CImageConvStreamedDecodeStraightProxy(MFrameworkExtAsyncInterface* aStatusOwner, RThread& aRequestThread);

private:

	MImageConvStreamedDecode* iExtension;

	MFrameworkExtAsyncInterface* iStatusOwner;

	RThread* iThread;

	};

/*

Supports ICL client side extensions in calling the plugin-side

MImageConvStreamedDecode implementation.

Used only in the threaded operations.

@see MImageConvStreamedDecode

@see CImageConvStreamedDecodeStub

*/

NONSHARABLE_CLASS( CImageConvStreamedDecodeProxy ) : public CImageConvProxyBase,

									  				 public MImageConvStreamedDecode

	{

public:

	static CImageConvStreamedDecodeProxy* NewL(MImageConvExtensionThreadedSupport* aParent);

	// From CImageConvProxyBase

	void SetupExtension(MImageConvExtension*& aExtension);	

	// From MImageConvStreamedDecode

	TUid Uid() const;

	void IncrementRef();

	void Release();

	void GetSupportedFormatsL(RArray<TUid>& aFormats, TUid& aOptimalFormat) const;

	void GetCapabilities(TUid aFormat, TInt aFrameNumber, TDecodeStreamCaps& aCaps) const;

	TInt GetBufferSize(TUid aFormat, TSize& aBlockSizeInPixels, TInt aNumBlocks) const;

	void InitFrameL(TUid aFormat, TInt aFrameNumber, TDecodeStreamCaps::TNavigation aNavigation);

	void GetBlocks(TRequestStatus* aStatus, CImageFrame* aFrame, TInt aSeqPosition, TInt aNumBlocksToGet, TInt* aNumBlocksRead);

	void GetNextBlocks(TRequestStatus* aStatus, CImageFrame* aFrame, TInt aNumBlocksToGet, TInt* aNumBlocksRead, TBool* aHaveMoreBlocks);

private:

	explicit CImageConvStreamedDecodeProxy(MImageConvExtensionThreadedSupport* aParent);

private:

	MImageConvExtensionThreadedSupport* iParent;

	};

/*

Plugin-side stub class that relays calls from the streamed decode proxy to the

MImageConvStreamedDecode implementation.

Used only in the threaded operations.

@see MImageConvStreamedDecode

@see CImageConvStreamedDecodeProxy

*/

NONSHARABLE_CLASS( CImageConvStreamedDecodeStub ) :	public CImageConvStubBase

	{	

public:

	static CImageConvStreamedDecodeStub* NewL(MImageConvExtension* aExtension, MFrameworkExtAsyncInterface* aStatusOwner, RThread& aRequestThread);

	~CImageConvStreamedDecodeStub();

	// From CImageConvStubBase

	TUid Uid() const;

	void HandleExecuteCommandL(TExecuteCommandParamsBase& aExecuteCommandBase);

	void HandleExecuteAsyncCommand(TExecuteCommandParamsAsyncBase& aExecuteCommandBase);

private:

	explicit CImageConvStreamedDecodeStub(MImageConvExtension* aExtension, MFrameworkExtAsyncInterface* aStatusOwner, RThread& aRequestThread);

private:

	MImageConvStreamedDecode* iExtension;

	MFrameworkExtAsyncInterface* iStatusOwner;

	RThread* iThread;

	};

/*

Supports ICL client side extensions in calling the plugin-side

MImageConvStreamedEncode implementation.

Used only in the single-threaded operations.

@see MImageConvStreamedEncode

*/

NONSHARABLE_CLASS( CImageConvStreamedEncodeStraightProxy ) : public CImageConvProxyBase,

									  				 		 public MImageConvStreamedEncode

	{

public:

	static CImageConvStreamedEncodeStraightProxy* NewL(MFrameworkExtAsyncInterface* aStatusOwner, RThread& aRequestThread);

	~CImageConvStreamedEncodeStraightProxy();

	// From CImageConvProxyBase

	void SetupExtension(MImageConvExtension*& aExtension);

	// From MImageConvStreamedEncode

	TUid Uid() const;

	void IncrementRef();

	void Release();

	void GetSupportedFormatsL(RArray<TUid>& aFormats, TUid& aOptimalFormat) const;

	void GetCapabilities(TUid aFormat, TEncodeStreamCaps& aCaps) const;

	void InitFrameL(TUid aFormat, TInt aFrameNumber, const TSize& aFrameSizeInPixels, const TSize& aBlockSizeInPixels, TEncodeStreamCaps::TNavigation aNavigation, const CFrameImageData* aFrameImageData);

	void AppendBlocks(TRequestStatus* aStatus, const CImageFrame& aBlocks, TInt aNumBlocksToAdd);

	void AddBlocks(TRequestStatus* aStatus, const CImageFrame& aBlocks, const TInt& aSeqPosition);

	void Complete(TRequestStatus* aStatus);

private:

	CImageConvStreamedEncodeStraightProxy(MFrameworkExtAsyncInterface* aStatusOwner, RThread& aRequestThread);

private:

	MImageConvStreamedEncode* iExtension;

	MFrameworkExtAsyncInterface* iStatusOwner;

	RThread* iThread;

	};

/*

Supports ICL client side extensions in calling the plugin-side

MImageConvStreamedEncode implementation.

Used only in the threaded operations.

@see MImageConvStreamedEncode

@see CImageConvStreamedEncodeStub

*/

NONSHARABLE_CLASS( CImageConvStreamedEncodeProxy ) : public CImageConvProxyBase,

									  				 public MImageConvStreamedEncode

	{

public:

	static CImageConvStreamedEncodeProxy* NewL(MImageConvExtensionThreadedSupport* aParent);

	// From CImageConvProxyBase

	void SetupExtension(MImageConvExtension*& aExtension);

	// From MImageConvStreamedEncode

	TUid Uid() const;

	void IncrementRef();

	void Release();

	void GetSupportedFormatsL(RArray<TUid>& aFormats, TUid& aOptimalFormat) const;

	void GetCapabilities(TUid aFormat, TEncodeStreamCaps& aCaps) const;

	void InitFrameL(TUid aFormat, TInt aFrameNumber, const TSize& aFrameSizeInPixels, const TSize& aBlockSizeInPixels, TEncodeStreamCaps::TNavigation aNavigation, const CFrameImageData* aFrameImageData);

	void AppendBlocks(TRequestStatus* aStatus, const CImageFrame& aBlocks, TInt aNumBlocksToAdd);

	void AddBlocks(TRequestStatus* aStatus, const CImageFrame& aBlocks, const TInt& aSeqPosition);

	void Complete(TRequestStatus* aStatus);

private:

	explicit CImageConvStreamedEncodeProxy(MImageConvExtensionThreadedSupport* aParent);

private:

	MImageConvExtensionThreadedSupport* iParent;

	};

/*

Plugin-side stub class that relays calls from the streamed encode proxy to the

MImageConvStreamedEncode implementation.

Used only in the threaded operations.

@see MImageConvStreamedEncode

@see CImageConvStreamedEncodeProxy

*/

NONSHARABLE_CLASS( CImageConvStreamedEncodeStub ) :	public CImageConvStubBase

	{	

public:

	static CImageConvStreamedEncodeStub* NewL(MImageConvExtension* aExtension, MFrameworkExtAsyncInterface* aStatusOwner, RThread& aRequestThread);