--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/baseport/syborg/webcamera/webcamer_convert.cpp	Mon Oct 18 19:39:25 2010 +0900
@@ -0,0 +1,184 @@
+/*
+* 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__
+#include "webcamer_convert.h"
+#endif
+
+#define DP(format...) Kern::Printf(format)
+
+/**
+Constructor.
+*/
+DWebCameraConvert::DWebCameraConvert(TWebcameraUVC* aUvcFormat)
+	{
+	TUint32 wGuid = aUvcFormat->iUVCDescriptor.iFormatDescriptor.iGuid.iData1;
+	switch (wGuid)
+		{
+	case KWebcameraYuy2:
+		//Create object of DWebCameraConvertYuv.
+		iConvertObject = new(ELeave) DWebCameraConvertYuv(aUvcFormat);
+		break;
+	default:
+		break;
+		}
+	}
+
+/**
+Destructor.
+*/
+DWebCameraConvert::~DWebCameraConvert()
+	{
+	delete iConvertObject;
+	}
+
+TInt DWebCameraConvert::ConvertData(TUint8* aInBuf, TUint8* aOutBuf)
+	{
+	return iConvertObject->ConvertData(aInBuf, aOutBuf);
+	}
+
+/**
+Constructor.
+*/
+DWebCameraConvertBase::DWebCameraConvertBase(TWebcameraUVC* aUvcFormat)
+					:iUvcFormat(aUvcFormat)
+	{
+	}
+
+/** 
+Destructor.
+*/
+DWebCameraConvertBase::~DWebCameraConvertBase()
+	{
+	}
+
+/**
+Convert FrameData to BitmapData.
+
+@param	aInBuf	[in]					Data to convert.
+		aOutBuf	[out]					BitmapData after conversion.
+@return	KErrNotSupported.				Implement in sub-class, return unsupport in base-class.
+*/
+TInt DWebCameraConvertBase::ConvertData(TUint8* /*aInBuf*/, TUint8* /*aOutBuf*/)
+	{
+	return KErrNotSupported;
+	}
+
+/**
+Constructor.
+*/
+DWebCameraConvertYuv::DWebCameraConvertYuv(TWebcameraUVC* aUvcFormat)
+					:DWebCameraConvertBase(aUvcFormat)
+	{
+	}
+
+/**
+Destructor.
+*/
+DWebCameraConvertYuv::~DWebCameraConvertYuv()
+	{
+	}
+
+/**
+Convert FrameData to BitmapData(yuv->Bitmap).
+
+@param	aInBuf	[in]					Data to convert.
+		aOutBuf	[out]					BitmapData after conversion.
+@return	KErrNone.
+*/
+TInt DWebCameraConvertYuv::ConvertData(TUint8* aInBuf, TUint8* aOutBuf)
+	{
+	TUint wInPos = 0;							//Declaration to get FrameData before conversion.
+	TUint wOutPos = 0;							//Declaration to store BitmapData after conversion.
+	TUint wPixel32 = 0;							//Declaration to store data(1pixel32bit) after conversion from yuv to rgb.
+	TInt wY0, wU, wY1, wV;						//Declaration to store signal that get from rgb.
+	TUint16 wWidth, wHeight;					//Declaration to store width and height from argument aVideoData.
+
+	wWidth = iUvcFormat->iUVCDescriptor.iFrameDescriptor.iWidth;		//Store width information from aVideoData.
+	wHeight = iUvcFormat->iUVCDescriptor.iFrameDescriptor.iHeight;		//Store height information from aVideoData.
+
+	TUint wImageSize = wWidth * wHeight * 2;
+
+	//Get width and heigth data.
+	for (wInPos = 0; wInPos < wImageSize; wInPos += 4)
+		{
+		//Y16-bit to suitable location of YUYV.
+		wY0 = (static_cast<TUint>(aInBuf[wInPos + 0]) & KWebcameraBitMask);
+		wU  = (static_cast<TUint>(aInBuf[wInPos + 1]) & KWebcameraBitMask);
+		wY1 = (static_cast<TUint>(aInBuf[wInPos + 2]) & KWebcameraBitMask);
+		wV  = (static_cast<TUint>(aInBuf[wInPos + 3]) & KWebcameraBitMask);
+
+		//Store RGB by wPixel32 format, that was converted from yuv.
+		wPixel32 = ConvertYuvToBitmap(wY0, wU, wV);
+		//Calculate element of RGB from wPixel32.
+		aOutBuf[wOutPos++] = (wPixel32 & KWebcameraBitMask);
+		aOutBuf[wOutPos++] = (wPixel32 & KWebcameraBitMask8) >> 8;
+		aOutBuf[wOutPos++] = (wPixel32 & KWebcameraBitMask16) >> 16;
+
+		//Store RGB by wPixel32 format, that was converetd from yuv. 
+		wPixel32 = ConvertYuvToBitmap(wY1, wU, wV);
+		aOutBuf[wOutPos++] = (wPixel32 & KWebcameraBitMask);
+		aOutBuf[wOutPos++] = (wPixel32 & KWebcameraBitMask8) >> 8;
+		aOutBuf[wOutPos++] = (wPixel32 & KWebcameraBitMask16) >> 16;
+		}
+
+	return KErrNone;
+	}
+
+/**
+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 DWebCameraConvertYuv::ConvertYuvToBitmap(TInt aY, TInt aU, TInt aV)
+	{
+	TUint wPixel32 = 0;								//Declaration to use still image of wPixel32 format.
+	TUint8* wPixel = static_cast<TUint8*>&wPixel32;	//Cast still image of wPixel32 format to 8bit to convert. 
+	TInt wR = 0;									//Declaration to store still image after conversion.
+	TInt wG = 0;
+	TInt wB = 0;
+
+	//Convert yuv to rgb.
+	wR = aY + ((1370705 * (aV - 128)) / 1000000);
+	wG = aY - ((698001 * (aV - 128)) / 1000000) - ((337633 * (aU - 128)) / 1000000);
+	wB = aY + ((1732446 * (aU - 128)) / 1000000);
+
+	//Define the range of RGB(0~255).
+	if (!(0 <= wR && wR <= 255))
+		{
+		(wR > 255) ? (wR = 255) : (wR = 0);
+		}
+	if (!(0 <= wG && wG <= 255))
+		{
+		(wG > 255) ? (wG = 255) : (wG = 0);
+		}
+	if (!(0 <= wB && wB <= 255))
+		{
+		(wB > 255) ? (wB = 255) : (wB = 0);
+		}
+
+	//Compress RGB.
+	wPixel[0] = (wB * KWebcameraNeutralGrayValue) / KWebcameraColorGradation;
+	wPixel[1] = (wG * KWebcameraNeutralGrayValue) / KWebcameraColorGradation;
+	wPixel[2] = (wR * KWebcameraNeutralGrayValue) / KWebcameraColorGradation;
+
+	return wPixel32;
+	}