粤嵌GEC6818实现电子相册_粤嵌电子相册代码

1.打印触摸屏坐标数据

#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/mman.h>
#include <strings.h>
#include <linux/input.h>

void main()
{
	struct input_event myevent; //type:事件类型；code：事件代码；value:事件的值
	int x,y;
	//打开触摸屏设备文件
	int ts_fd;
	ts_fd = open("/dev/input/event0",O_RDONLY);
	//读取触摸屏数据
	while(1)
	{
		read(ts_fd,&myevent,sizeof(myevent));
		
		if(myevent.type==EV_ABS)
		{
			if(myevent.code==ABS_X)
			{
				x=myevent.value;
			}
			if(myevent.code==ABS_Y)
			{
				y=myevent.value;
			}
		}
		if(myevent.type==EV_KEY&&myevent.code==BTN_TOUCH&&myevent.value==0)
		{
			printf("%d %d\n",x,y);
		}
		
	}
	
	//打印触摸屏数据
	//printf("type=%d,code=%d,value=%d\n",myevent.type,myevent.code,myevent.value);
	
	close(ts_fd);
}

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2.相册(触摸换图)

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <stdio.h>
#include <unistd.h>
#include <strings.h>
#include <sys/mman.h>
#include <linux/input.h>

int show(const char* path);//bmp图片显示函数原型

int main()
{
	int x,y,k=0;;
	char photo[][30]={"1.bmp","2.bmp","3.bmp","4.bmp"};
	struct input_event myevent;//定义数据缓冲区
	
	//打开触摸屏设备文件
	int ts_fd = open("/dev/input/event0",O_RDONLY);
	
	while(1)
	{
		//读取数据并输出
		read(ts_fd,&myevent,sizeof(myevent)); //阻塞，等待输入
		if(myevent.type==EV_ABS)
		{
			if(myevent.code==ABS_X)
			{
				x=myevent.value;
			}
			if(myevent.code==ABS_Y)
			{
				y=myevent.value;
			}
		}
		if(myevent.type == EV_KEY && myevent.code == BTN_TOUCH && myevent.value == 0)
		{
			if(x<400)
			{
				k++;
				if(k==4)
				{
					k=0;
				}
				show(photo[k]);
			}
			
			if(x>400)
			{
				k--;
				if(k<0)
				{
					k=3;
				}
				show(photo[k]);
			}
		}
	}	
	//关闭触摸屏
	close(ts_fd);
	return 0;
}

//bmp图片显示函数实现
int show(const char* path)
{
	int x,y;
	int lcd_fd,bmp_fd;
	char bmp_buf[800*480*3];
	bzero(bmp_buf,sizeof(bmp_buf));
	int lcd_buf[800*480];
	bzero(lcd_buf,sizeof(lcd_buf));
	int show_buf[800*480];
	bzero(show_buf,sizeof(show_buf));
	
	//打开LCD设备文件
	lcd_fd = open("/dev/fb0",O_RDWR);
	
	//打开图片
	bmp_fd = open(PATH,O_RDONLY);
	
	//定位光标
	lseek(bmp_fd,54,SEEK_SET);
	
	//读图片像素
	read(bmp_fd,bmp_buf,sizeof(bmp_buf));
		
	for(int i=0;i<800*480; i++)
	{
		lcd_buf[i] = bmp_buf[i*3]<<0 | bmp_buf[i*3+1]<<8 | bmp_buf[i*3+2]<<16;
	}
	
	//解决图片颠倒问题
	for(y=0; y<480; y++)
	{
		for(x=0; x<800; x++)
		{
			show_buf[(479-y)*800+x] = lcd_buf[800*y+x];
		}
	}
	
	//内存映射
	int *fd_mmap = mmap(NULL,800*480*4,PROT_READ|PROT_WRITE,MAP_SHARED,lcd_fd,0);
	
	//显示
	for(int i=0;i<800*480;i++)
	{
		*(fd_mmap+i)=show_buf[i];
	}
	
	close(lcd_fd);//关闭LCD
	close(bmp_fd);//关闭图片文件
    munmap(fd_mmap,800*480*4);//解除内存映射

}

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3.相册翻页添加特效

#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/mman.h>
#include <strings.h>
#include <linux/input.h>
#include "show_bmp.h"

int show(const char picturenum);

void main()
{
	struct input_event myevent; //type,code,value
	int x,y;
	int k=0;
	//char picture[][30]={"1.bmp","2.bmp","3.bmp","4.bmp"};

	//打开触摸屏设备文件
	int ts_fd;
	ts_fd = open("/dev/input/event0",O_RDONLY);
	
	//读取触摸屏数据
	while(1)
	{
		read(ts_fd,&myevent,sizeof(myevent));
		
		if(myevent.type==EV_ABS)
		{
			if(myevent.code==ABS_X)
			{
				x=myevent.value;
			}
			if(myevent.code==ABS_Y)
			{
				y=myevent.value;
			}
		}
		if(myevent.type==EV_KEY&&myevent.code==BTN_TOUCH&&myevent.value==0)
		{
			if(x>400)
			{
				k++;
				if(k>3){k=0;}
				show(k);
				
			}
			if(x<400)
			{
				k--;
				if(k<0){k=3;}
				show(k);
		
			}
		}
		
	}
	
	//打印触摸屏数据
	//printf("type=%d,code=%d,value=%d\n",myevent.type,myevent.code,myevent.value);
	
	close(ts_fd);
}

int show(const char picturenum)
{
	int p_fd;
	p_fd = open("/dev/fb0",O_RDWR);
	int *pfd_mmap = mmap(NULL,800*480*4,PROT_READ | PROT_WRITE,MAP_SHARED,p_fd,0);
	//char picture[][30]={"1.bmp","2.bmp","3.bmp","4.bmp"};
	
	if(picturenum==0)
	{
		pic_circular_spread("./1.bmp",pfd_mmap);
	}
	if(picturenum==1)
	{
		pic_down("./2.bmp",pfd_mmap);
	}
	if(picturenum==2)
	{
		pic_circular_shrink("./3.bmp",pfd_mmap);
	}
	if(picturenum==3)
	{
		pic_left("./4.bmp",pfd_mmap);
	}	
}
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