108 lines
1.9 KiB
C
108 lines
1.9 KiB
C
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#include "fbtool.h"
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//打开并且初始化该frame buffer
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int fb_open(PFBDEV pFbdev)
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{
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//打开frame buffer
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pFbdev->fb = open(pFbdev->dev,O_RDWR);
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if(pFbdev->fb < 0)
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{
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printf("打开错误 %s : %n.请检查内核配置\n",pFbdev->dev);
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return 0;
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}
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// 初始化fb_var
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if(-1 == ioctl(pFbdev->fb,FBIOGET_VSCREENINFO,&(pFbdev->fb_var)))
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{
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printf("ioctl FBIOGET_VSCREENINFO\n");
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return 0;
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}
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// 初始化fb_fix
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if(-1 == ioctl(pFbdev->fb,FBIOGET_FSCREENINFO,&(pFbdev->fb_fix)))
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{
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printf("ioctl FBIOGET_FSCREENINFO\n");
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return 0;
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}
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return 1;
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}
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//关闭frame buffer
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int fb_close(PFBDEV pFbdev)
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{
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close(pFbdev->fb);
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pFbdev->fb = -1;
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}
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//打印frame buffer 所占内存的开始地址
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void pmem_start(PFBDEV pFbdev)
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{
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printf("frame buffer所占内存的开始地址为:%d\n",pFbdev->fb_fix.smem_start);
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}
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//打印FB_TYPE
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void p_type(PFBDEV pFbdev)
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{
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printf("frame buffer 的类型为:%d\n",pFbdev->fb_fix.type);
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}
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//打印可见清晰度
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void p_visible_res(PFBDEV pFbdev)
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{
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printf("frame buffer的可见清晰度为：\n\tx = %d\n\ty = %d\n",pFbdev->fb_var.xres,pFbdev->fb_var.yres);
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}
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//打印虚拟分辨率
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void p_virt_res(PFBDEV pFbdev)
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{
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printf("frame buffer的虚拟清晰度为：\n\tx = %d\n\ty = %d\n",pFbdev->fb_var.xres_virtual,pFbdev->fb_var.yres_virtual);
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}
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//打印虚拟到可见的偏移量
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void p_offset(PFBDEV pFbdev)
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{
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printf("frame buffer的虚拟分辨率到可见分辨率的偏移量为:\n\tx = %d\n\ty = %d\n",pFbdev->fb_var.xoffset,pFbdev->fb_var.yoffset);
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}
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//打印每个像素的位数
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void p_bpp(PFBDEV pFbdev)
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{
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printf("frame buffer的BPP为：%d\n",pFbdev->fb_var.bits_per_pixel);
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}
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//打印R,G,B和透明度
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void p_rgbt(PFBDEV pFbdev)
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{
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printf("这个后面再说!!\n");
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}
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//打印在内存中的高度和宽度
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void p_hw(PFBDEV pFbdev)
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{
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printf("frame buffer在内存中所占的高度和宽度分别是:\n\t宽度 = %d\n\t高度 = %d\n",pFbdev->fb_var.height,pFbdev->fb_var.width);
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}
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