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


#include???????????????/*?low-level?i/o?*/
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?

#include?“v4l2.h“
#include?“yuv422_rgb.h“
#include?

//#define?DEBUG_PTIME
#define?DEBUG_GTIME	

#define?IMAGE_WIDTH	176
#define?IMAGE_HEIGHT	144
#define?WINDOW_W	176
#define?WINDOW_H	144
#define?WINDOW_X	40
#define?WINDOW_Y	60

static?void?*fbbuf;
struct?fb_var_screeninfo?fbvar;
struct?fb_fix_screeninfo?finfo;



int?fb_init（char?*devname）
{
	unsigned?int?bpp;
	unsigned?int?screen_size;
	int?fd;
	fd?=?open（devname?O_RDWR）;
	if?（ioctl（fd?FBIOGET_VSCREENINFO?&fbvar）?		return?-1;
	bpp?=?fbvar.bits_per_pixel;
	screen_size?=?fbvar.xres?*?fbvar.yres?*?bpp?/?8;
	fbbuf?=?mmap（0?screen_size?PROT_READ?|?PROT_WRITE?MAP_SHARED?fd?0）;
	return?fd;
}

static?inline?int??make_pixel（unsigned?int?a?unsigned?int?r?unsigned?int?g?unsigned?int?b）
{
????return?（unsigned?int）（（（r?>>?3）?<>?2）?<>?3）））;
}

static?void?draw_image（unsigned?short?*pbuf?unsigned?char?*buf）
{
	unsigned?int?xy;
	unsigned?int?pixel_num;
	if?（WINDOW_W?<=?240）?{
		for?（y?=?WINDOW_Y;?y?			for?（x?=?WINDOW_X;?x?				pixel_num?=?（（y?-?WINDOW_Y）?*?IMAGE_WIDTH?+?x?-?WINDOW_X）?*?3;
				pbuf[y?*?240?+?x]?=?make_pixel（0?（unsigned?int）buf[pixel_num]?
						（unsigned?int）buf[pixel_num?+?1]?（unsigned?int）buf[pixel_num?+?2]）;
			}
		}
	}?else?{?/*?reverse?*/
		for?（x?=?0;?x?			for?（y?=?0;?y?				pixel_num?=?（y?*?IMAGE_WIDTH?+?x）?*?3;
				pbuf[x?*?240?+?y]?=?make_pixel（0?（unsigned?int）buf[pixel_num]?
						（unsigned?int）buf[pixel_num?+?1]?（unsigned?int）buf[pixel_num?+?2]）;
			}
		}
	}
}
void?process_image?（unsigned?char?*p?struct?camera?*cam）
{
????????struct?timeval?tpstarttpend;
????????float?timeuse;
#ifdef?DEBUG_PTIME
	gettimeofday（&tpstartNULL）;
#endif
	yuv422_rgb24（p?cam->rgbbuf?cam->width?cam->height）;
#ifdef?DEBUG_PTIME
	gettimeofday（&tpendNULL）;
	timeuse?=?1000000?*?（tpend.tv_sec?-?tpstart.tv_sec）?+?（tpend.tv_usec?-?tpstart.tv_usec）;?
	timeuse?/=?1000000;?
	printf（“Used?Time:%10f?s\n“timeuse）;
#endif
}?
int?main（int?argc?const?char*?argv[]）
{
	int?fp?=?0;
	unsigned?int?i;
	/*
	*?init?struct?camera?
	*/
	struct?camera?*cam;
	struct?timeval?tpstarttpend;
????????float?timeuse;
	unsigned?short?*pbuf;

?	cam?=?malloc（sizeof（struct?camera））;
?	if?（!cam）?{?
		printf（“malloc?camera?failure!\n“）;
		exit（1）;
	}
????????cam->device_name?=?“/dev/video0“;
	cam->buffers?=?NULL;
	cam->width?=?IMAGE_WIDTH;
	cam->height?=?IMAGE_HEIGHT;
	cam->display_depth?=?3;??/*?RGB24?*/
	cam->rgbbuf?=?malloc（cam->width?*?cam->height?*?cam->display_depth）;

	if?（!cam->rgbbuf）?{?
		printf（“malloc?rgbbuf?failure!\n“）;
		exit（1）;
	}
	open_camera（cam）;
	

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2011-12-15?09:48??videolinux\
?????文件????????3971??2011-12-15?09:48??videolinux\main.c
?????文件????????1094??2011-12-13?07:37??videolinux\v4l2.h
?????文件????????4372??2011-12-06?12:18??videolinux\main.c.backup
?????文件???????25648??2011-12-15?09:48??videolinux\camera_test
?????文件???????11986??2011-12-13?07:38??videolinux\v4l2.c
?????文件????????2492??2011-11-21?08:45??videolinux\yuv422_rgb.c
?????文件???????10672??2011-12-15?07:25??videolinux\v4l2.o
?????文件?????????431??2011-12-09?08:40??videolinux\Makefile
?????文件?????????110??2011-12-06?08:07??videolinux\yuv422_rgb.h
?????文件????????2008??2011-12-15?07:25??videolinux\yuv422_rgb.o
?????文件????????3580??2011-12-15?09:48??videolinux\main.o