#include?
#include?
#include?
#include?
#include?
#include?

#include?“rgb2yuv420sp.h“


static?void?rgb2yuv420p_float（char*?pYUV?char*?pRGB?int?w?int?h）
{
????????int?frameSize?=?w?*?h;

????????int?yIndex?=?0;
????????int?uvIndex?=?frameSize;

????????int??R?G?B?Y?U?V;
????????int?index?=?0;

????????int?ij;
????????struct?RGBQUAD*?rbgBuf?=?（struct?RGBQUAD*）pRGB;

????????for?（j?=?0;?j?????????????for?（i?=?0;?i?????????????????//alpha?is?not?used
????????????????R?=?rbgBuf[index].rgbRed;
????????????????G?=?rbgBuf[index].rgbGreen;???
????????????????B?=?rbgBuf[index].rgbBlue;

	?????//?printf（“R:%d?G:%d?B:%d\n?“?RGB）;

????????????????//?well?known?RGB?to?YUV?algorithm
????????????????Y?=??0.299?*?R?+?0.587?*?G?+?0.114?*?B;
????????????????U?=?-0.147?*?R?-?0.289?*?G?+?0.436?*?B;
????????????????V?=?0.615?*?R?-?0.515?*?G?-?0.100?*?B;


????????????????pYUV[yIndex++]?=?（char）?（（Y??255）???255?:?Y））;
????????????????if?（j?%?2?==?0?&&?index?%?2?==?0）?{
????????????????????pYUV[uvIndex++]?=?（char）（（V<0）???0?:?（（V?>?255）???255?:?V））;
????????????????????pYUV[uvIndex++]?=?（char）（（U<0）???0?:?（（U?>?255）???255?:?U））;
????????????????}

????????????????index?++;
????????????}
????????}
}


static?void?rgb2yuv420p_int（unsigned?char*?pYUV?char*?pRGB?int?w?int?h）
{
????????int?frameSize?=?w?*?h;

????????int?yIndex?=?0;
????????int?uvIndex?=?frameSize;

????????int??R?G?B?Y?U?V;
????????int?index?=?0;

????????int?ij;
????????struct?RGBQUAD*?rbgBuf?=?（struct?RGBQUAD*）pRGB;

????????for?（j?=?0;?j?????????????for?（i?=?0;?i?????????????????//alpha?is?not?used
????????????????R?=?rbgBuf[index].rgbRed;
????????????????G?=?rbgBuf[index].rgbGreen;
????????????????B?=?rbgBuf[index].rgbBlue;;
	??????//printf（“R:%d?G:%d?B:%d\n?“?RGB）;

????????????????Y?=??（1224?*?R?+?2404?*?G?+?467?*B）?>>?12;
????????????????U?=??（-602?*?R?-?1184?*?G?+?1786?*?B）?>>?12;
????????????????V?=??（2519?*?R?-?2109?*?G?-?410?*?B?）?>>?12;


????????????????pYUV[yIndex++]?=?（unsigned?char）?（（Y??255）???255?:?Y））;
????????????????if?（j?%?2?==?0?&&?index?%?2?==?0）?{
????????????????????pYUV[uvIndex++]?=?（unsigned?char）（（V<0）???0?:?（（V?>?255）???255?:?V））;
????????????????????pYUV[uvIndex++]?=?（unsigned?char）（（U<0）???0?:?（（U?>?255）???255?:?U））;
????????????????}

????????????????index?++;
????????????}
????????}
}

static?int?tlb_RY[256];
static?int?tlb_GY[256];
static?int?tlb_BY[256];

static?int?tlb_RU[256];
static?int?tlb_GU[256];
static?int?tlb_BU[256];

static?int?tlb_RV[256];
static?int?tlb_GV[256];
static?int?tlb_BV[256];

static?void?init_lookup_tables（）
{
????????int?i;
	for?（i?=?0;?i?		tlb_RY[i]?=?（i?*?1224）?>>?12;
		tlb_GY[i]?=?（i?*?2404）?>>?12;
		tlb_BY[i]?=?（i?*?467）?>>?12;

		tlb_RU[i]?=?（i?*?602）

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件??????290454??2013-10-22?15:41??32.bmp
?????文件??????108900??2013-10-22?15:56??32.yuv
?????文件????????2706??2013-10-22?19:00??rgb2yuv.zip
?????文件????????8126??2013-10-22?16:01??rgb2yuv420sp.c
?????文件????????1433??2013-10-22?15:30??rgb2yuv420sp.h
?????文件??????319488??2013-10-22?13:14??YUVViewer.exe