/*

* Copyright (c) 2010 ISB.

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the "Symbian Foundation License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.symbianfoundation.org/legal/sfl-v10.html".

*

* Initial Contributors:

* ISB - Initial contribution

*

* Contributors:

*

* Description:

*

*/

#ifndef WEBCAMERACONVERT_H__

#define WEBCAMERACONVERT_H__

#include <e32def.h> 

#include <comm.h>

#ifndef WEBCAMERA_UVC_H_

#include "webcamera_uvc.h"

#endif

const TUint KWebcameraNeutralGrayValue	= 220;

const TUint KWebcameraColorGradation	= 256;		// true color.

const TUint KWebcameraBitMask			= 0x000000ff;

const TUint KWebcameraBitMask8			= 0x0000ff00;

const TUint KWebcameraBitMask16			= 0x00ff0000;

/**

Perform a Convert function Base.

*/

class DWebCameraConvertBase : public DBase

	{

public:

	/**

	Constructor.

	*/

	DWebCameraConvertBase(TWebcameraUVC* aUvcFormat);

	/** 

	Destructor.

	*/

	~DWebCameraConvertBase();

public: //virtual function.

	/**

	Convert FrameData to Bitmap.

	@param	aInBuf	[in]			FrameData before conversion.

			aOutBuf	[out]			BimapData after conversion.

	@return	KErrNotSupported.		Implement in sub-class, return unsupport in base-class.

	*/

	virtual TInt ConvertData(TUint8* aInBuf, TUint8* aOutBuf);

protected:

	TWebcameraUVC* iUvcFormat;

	};

/**

Perform a Convert function (Yuv -> Bitmap).

*/

class DWebCameraConvertYuv : public DWebCameraConvertBase

	{

public:

	/**

	Create object.

	@return Pointer of object.

	*/

	static DWebCameraConvertYuv* NewL();

	/**

	Constructor.

	*/

	DWebCameraConvertYuv(TWebcameraUVC* aUvcFormat);

	/**

	Destructor.

	*/

	~DWebCameraConvertYuv();

public: //from DWebCameraConvertBase

	/**

	Convert FrameData to Bitmap(YUV->Bitmap).

	@param	aInBuf	[in]			FrameData before conversion.

			aOutBuf	[out			BitmapData after conversion.

	@return	KErrNone.

	*/

	TInt ConvertData(TUint8* aInBuf, TUint8* aOutBuf);

private:

	/**

	Secondary constructor.

	*/

	void ConstructL();

	/**

	Convert YUV to RGB.

	@param	aY	[in]				Signal of brightness.

			aU	[in]				Signal of colour difference(Cb).

			aV	[in]				Signal of colour difference(cr).

	@return	Pixel.

	*/

	TInt ConvertYuvToBitmap(TInt aY, TInt aU, TInt aV);

	};

/**

Convert function

*/

class DWebCameraConvert : public DBase

	{

public:

	/**

	Constructor.

	*/

	DWebCameraConvert(TWebcameraUVC* aUvcFormat);

	/**

	Destructor.

	*/

	~DWebCameraConvert();

	/**

	Decide video format, by video format from UVC class. 

	@param	aInBuf		[in]		Data to convert.

			aOutBuf		[out]		BitmapData after conversion.

			aVideoData	[in]		Format data of Video.

	@return	KErrNone

	*/

	TInt ConvertData(TUint8* aInBuf, TUint8* aOutBuf);

private:

	/**

	Store the instance.

	*/

	DWebCameraConvertBase* iConvertObject;

	};

#endif // ECAMWEBCAMERACONVERT_H