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Fixed issue with missing /dev/fb0

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This commit is contained in:
Łukasz Magiera 2016-03-03 00:06:39 +01:00
parent cbe75a14c7
commit 43f089df9f
1 changed files with 56 additions and 57 deletions
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113
src/c/fb.c
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@ -437,63 +437,6 @@ static int l_fb_ready (lua_State *L) {
} }
void fb_start(lua_State *L) { void fb_start(lua_State *L) {
#ifndef _WIN32
fb_file = open("/dev/fb0", O_RDWR);
if (fb_file == -1) {
printf("Error: cannot open framebuffer device");
exit(1);
return;
}
if (ioctl(fb_file, FBIOGET_FSCREENINFO, &fb_finfo) == -1) {
printf("Error reading fixed information");
exit(1);
return;
}
if (ioctl(fb_file, FBIOGET_VSCREENINFO, &fb_vinfo) == -1) {
printf("Error reading variable information");
exit(1);
return;
}
fb_vinfo.bits_per_pixel = 16;
if (fb_rot == 1 || fb_rot == 3) {
fb_cw = fb_vinfo.yres / 8;
fb_ch = fb_vinfo.xres / 16;
} else {
fb_cw = fb_vinfo.xres / 8;
fb_ch = fb_vinfo.yres / 16;
}
if (ioctl(fb_file, FBIOPUT_VSCREENINFO, &fb_vinfo) == -1) {
fb_vinfo.bits_per_pixel = 32;
if (ioctl(fb_file, FBIOPUT_VSCREENINFO, &fb_vinfo) == -1) {
printf("Error setting 32 or 16BPP mode");
exit(1);
return;
}
}
fb_bpp = fb_vinfo.bits_per_pixel;
fb_bypp = fb_bpp >> 3;
fb_pitch = fb_vinfo.xres_virtual * fb_bypp;
fb_xo = fb_vinfo.xoffset;
fb_yo = fb_vinfo.yoffset;
fb_ptr = (char *)mmap(0, fb_vinfo.xres * fb_vinfo.yres * fb_bypp, PROT_READ | PROT_WRITE, MAP_SHARED, fb_file, 0);
if ((intptr_t)fb_ptr == -1) {
printf("Failed to map framebuffer device to memory");
exit(1);
return;
}
colbuf = (char *)malloc(2 * fb_cw * fb_ch);
chrbuf = (ushort *)malloc(2 * fb_cw * fb_ch);
fb_ready = 1;
#endif
struct luaL_Reg fblib[] = { struct luaL_Reg fblib[] = {
#ifndef _WIN32 #ifndef _WIN32
{"setPalette", l_set_palette}, {"setPalette", l_set_palette},
@ -512,4 +455,60 @@ void fb_start(lua_State *L) {
}; };
luaL_openlib(L, "framebuffer", fblib, 0); luaL_openlib(L, "framebuffer", fblib, 0);
#ifndef _WIN32
fb_file = open("/dev/fb0", O_RDWR);
if (fb_file == -1) {
printf("Error: cannot open framebuffer device");
return;
}
if (ioctl(fb_file, FBIOGET_FSCREENINFO, &fb_finfo) == -1) {
printf("Error reading fixed information");
close(fb_file);
return;
}
if (ioctl(fb_file, FBIOGET_VSCREENINFO, &fb_vinfo) == -1) {
printf("Error reading variable information");
close(fb_file);
return;
}
fb_vinfo.bits_per_pixel = 16;
if (fb_rot == 1 || fb_rot == 3) {
fb_cw = fb_vinfo.yres / 8;
fb_ch = fb_vinfo.xres / 16;
} else {
fb_cw = fb_vinfo.xres / 8;
fb_ch = fb_vinfo.yres / 16;
}
if (ioctl(fb_file, FBIOPUT_VSCREENINFO, &fb_vinfo) == -1) {
fb_vinfo.bits_per_pixel = 32;
if (ioctl(fb_file, FBIOPUT_VSCREENINFO, &fb_vinfo) == -1) {
printf("Error setting 32 or 16BPP mode");
close(fb_file);
return;
}
}
fb_bpp = fb_vinfo.bits_per_pixel;
fb_bypp = fb_bpp >> 3;
fb_pitch = fb_vinfo.xres_virtual * fb_bypp;
fb_xo = fb_vinfo.xoffset;
fb_yo = fb_vinfo.yoffset;
fb_ptr = (char *)mmap(0, fb_vinfo.xres * fb_vinfo.yres * fb_bypp, PROT_READ | PROT_WRITE, MAP_SHARED, fb_file, 0);
if ((intptr_t)fb_ptr == -1) {
printf("Failed to map framebuffer device to memory");
close(fb_file);
return;
}
colbuf = (char *)malloc(2 * fb_cw * fb_ch);
chrbuf = (ushort *)malloc(2 * fb_cw * fb_ch);
fb_ready = 1;
#endif
} }