#include?“stdafx.h“
#include?“PicToYuv.h“
#include?“globle.h“

unsigned?char*?bmp2yuv（FILE?*input_file?int?&len）
{
	unsigned?char?*yuv?=?NULL;
	unsigned?char?*rgb?=?NULL;
	int?w?h;
	int?i?j;
	unsigned?int?x?y;
	unsigned?char?*Y?=?NULL;
	unsigned?char?*U?=?NULL;
	unsigned?char?*V?=?NULL;
	unsigned?char?tmp;

	bmp_fileheader?header;
	bmp_infoheader?info;

	fread（&header?sizeof（bmp_fileheader）?1?input_file）;
	fread（&info?sizeof（bmp_infoheader）?1?input_file）;

	if?（header.bfType?!=?0x4D42）
	{//不是bmp文件
		return?NULL;
	}

	w?=?info.biWidth;
	h?=?info.biHeight;

	long?imgSize?=?w?*?h;
	len?=?imgSize?+?（imgSize?>>?1）;

	rgb?=?（unsigned?char*）malloc（imgSize?*?6）;
	yuv?=?（unsigned?char*）malloc（len）;

	fseek（input_file?54?SEEK_SET）;
	fread（rgb?+?w?*?h?*?3?1?w?*?h?*?3?input_file）;

	//調整順序
	for?（i?=?h?-?1?j?=?0;?i?>?0;?i--?j++）
	{
		memcpy（rgb?+?j?*?w?*?3?rgb?+?w?*?h?*?3?+?i?*?w?*?3?w?*?3）;
	}

	for?（i?=?0;?i?	{
		tmp?=?rgb[i];
		rgb[i]?=?rgb[i?+?2];
		rgb[i?+?2]?=?tmp;
	}

	Y?=?yuv;
	U?=?yuv?+?w?*?h;
	V?=?U?+?（（w?*?h）?>>?2）;

	for?（y?=?0;?y?	{
		for?（x?=?0;?x?		{
			j?=?y?*?w?+?x;
			i?=?j?*?3;

			Y[j]?=?（unsigned?char）（DY（rgb[i]?rgb[i?+?1]?rgb[i?+?2]））;

			if?（x?%?2?==?1?&&?y?%?2?==?1）
			{
				j?=?（w?>>?1）?*?（y?>>?1）?+?（x?>>?1）;

				U[j]?=?（unsigned?char）（（DU（rgb[i]?rgb[i?+?1]?rgb[i?+?2]）?+?
					DU（rgb[i?-?3]?rgb[i?-?2]?rgb[i?-?1]）?+
					DU（rgb[i?-?w?*?3]?rgb[i?+?1?-?w?*?3]?rgb[i?+?2?-?w?*?3]）?+
					DU（rgb[i?-?3?-?w?*?3]?rgb[i?-?2?-?w?*?3]?rgb[i?-?1?-?w?*?3]））?/?4）;

				V[j]?=?（unsigned?char）（（DV（rgb[i]?rgb[i?+?1]?rgb[i?+?2]）?+?
					DV（rgb[i?-?3]?rgb[i?-?2]?rgb[i?-?1]）?+?
					DV（rgb[i?-?w?*?3]?rgb[i?+?1?-?w?*?3]?rgb[i?+?2?-?w?*?3]）?+?
					DV（rgb[i?-?3?-?w?*?3]?rgb[i?-?2?-?w?*?3]?rgb[i?-?1?-?w?*?3]））?/?4）;
			}
		}
	}

	return?yuv;
}

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2016-04-21?11:24??Debug\
?????文件???????36352??2016-04-21?11:10??Debug\Jpg2Yuv.exe
?????文件??????240640??2016-04-21?11:24??Debug\JpgToYuv.exe
?????文件??????387124??2016-04-21?11:24??Debug\JpgToYuv.ilk
?????文件??????527360??2016-04-21?11:24??Debug\JpgToYuv.pdb
?????文件??????196664??2002-11-12?04:11??Debug\bmp.bmp
?????文件???????98304??2016-04-21?11:20??Debug\bmp.yuv
?????文件???????12316??2016-04-20?16:36??Debug\jpg.jpg
?????文件???????98305??2016-04-21?11:20??Debug\jpg.yuv
?????文件?????????890??2016-04-21?11:24??Jpg2Yuv.sln
?????目錄???????????0??2016-04-21?11:24??JpgToYuv\
?????文件????????1932??2016-04-21?11:24??JpgToYuv\BmpToYuv.cpp
?????目錄???????????0??2016-04-21?11:25??JpgToYuv\Debug\
?????文件????????5057??2016-04-21?11:18??JpgToYuv\JpgToYuv.cpp
?????文件????????4877??2016-04-21?11:17??JpgToYuv\JpgToYuv.vcproj
?????文件????????1411??2016-04-21?11:24??JpgToYuv\JpgToYuv.vcproj.wang-PC.wang.user
?????文件?????????264??2016-04-21?11:22??JpgToYuv\PicToYuv.h
?????文件????????1189??2016-04-21?08:50??JpgToYuv\ReadMe.txt
?????文件????????1902??2016-04-21?10:58??JpgToYuv\globle.h
?????目錄???????????0??2016-04-21?08:52??JpgToYuv\libjpeg\
?????文件????????1525??2015-09-09?16:09??JpgToYuv\libjpeg\jconfig.h
?????文件???????15371??2015-09-09?16:09??JpgToYuv\libjpeg\jmorecfg.h
?????文件???????50461??2015-09-09?16:09??JpgToYuv\libjpeg\jpeglib.h
?????文件??????802504??2015-09-09?16:09??JpgToYuv\libjpeg\libjpeg.lib
?????文件?????????908??2016-04-21?11:19??JpgToYuv\main.cpp
?????文件?????????213??2016-04-21?08:50??JpgToYuv\stdafx.cpp
?????文件?????????233??2016-04-21?08:50??JpgToYuv\stdafx.h
?????文件?????????498??2016-04-21?08:50??JpgToYuv\targetver.h