int omb_open_framebuffer()
{
omb_fb_fd = open(OMB_FB_DEVICE, O_RDWR);
if (omb_fb_fd == -1) {
omb_log(LOG_ERROR, "cannot open framebuffer device");
return OMB_ERROR;
}
omb_log(LOG_DEBUG, "the framebuffer device was opened successfully");
if (omb_read_screen_info() == OMB_ERROR)
return OMB_ERROR;
if ((omb_var_screen_info.xres != OMB_SCREEN_WIDTH)
|| (omb_var_screen_info.yres != OMB_SCREEN_HEIGHT)
|| (omb_var_screen_info.bits_per_pixel != OMB_SCREEN_BPP)) {
if (omb_set_screen_info(OMB_SCREEN_WIDTH, OMB_SCREEN_HEIGHT, OMB_SCREEN_BPP) == OMB_ERROR)
return OMB_ERROR;
if (omb_read_screen_info() == OMB_ERROR)
return OMB_ERROR;
}
if (omb_map_framebuffer() == OMB_ERROR)
return OMB_ERROR;
if (omb_make_palette() == OMB_ERROR)
return OMB_ERROR;
if (omb_set_manual_blit() == OMB_ERROR)
return OMB_ERROR;
return OMB_SUCCESS;
}
int omb_set_screen_info(int width, int height, int bpp)
{
omb_var_screen_info.xres_virtual = omb_var_screen_info.xres = width;
omb_var_screen_info.yres_virtual = omb_var_screen_info.yres = height;
omb_var_screen_info.bits_per_pixel = bpp;
omb_var_screen_info.xoffset = omb_var_screen_info.yoffset = 0;
omb_var_screen_info.height = 0;
omb_var_screen_info.width = 0;
if (ioctl(omb_fb_fd, FBIOPUT_VSCREENINFO, &omb_var_screen_info) < 0) {
omb_log(LOG_ERROR, "cannot set variable information");
return OMB_ERROR;
}
if ((omb_var_screen_info.xres != width) && (omb_var_screen_info.yres != height) && (omb_var_screen_info.bits_per_pixel != bpp)) {
omb_log(LOG_ERROR, "cannot set variable information: got %dx%dx%d instead of %dx%dx%d",
omb_var_screen_info.xres, omb_var_screen_info.yres, omb_var_screen_info.bits_per_pixel, width, height, bpp);
return OMB_ERROR;
}
if (ioctl(omb_fb_fd, FBIOGET_FSCREENINFO, &omb_fix_screen_info) == -1) {
omb_log(LOG_ERROR, "cannot read fixed information");
return OMB_ERROR;
}
return OMB_SUCCESS;
}
int omb_make_palette()
{
int r = 8, g = 8, b = 4, i;
struct fb_cmap colormap;
colormap.start=0;
colormap.len=256;
colormap.red=red;
colormap.green = green;
colormap.blue = blue;
colormap.transp=trans;
int rs = 256 / (r - 1);
int gs = 256 / (g - 1);
int bs = 256 / (b - 1);
for (i = 0; i < 256; i++) {
colormap.red[i] = (rs * ((i / (g * b)) % r)) * 255;
colormap.green[i] = (gs * ((i / b) % g)) * 255;
colormap.blue[i] = (bs * ((i) % b)) * 255;
}
omb_log(LOG_DEBUG, "set color palette");
if (ioctl(omb_fb_fd, FBIOPUTCMAP, &colormap) == -1) {
omb_log(LOG_ERROR, "failed to set color palette");
//return OMB_ERROR;
return OMB_SUCCESS; // NEED TO BE FIXED FOR VU+ BOXES !!
}
return OMB_SUCCESS;
}
int omb_set_manual_blit()
{
omb_log(LOG_DEBUG, "set manual blit");
unsigned char tmp = 1;
if (ioctl(omb_fb_fd, FBIO_SET_MANUAL_BLIT, &tmp)) {
omb_log(LOG_ERROR, "failed to set manual blit");
return OMB_ERROR;
}
return OMB_SUCCESS;
}
int omb_map_framebuffer()
{
omb_fb_map = (unsigned char *)mmap(0, omb_screen_size, PROT_READ | PROT_WRITE, MAP_SHARED, omb_fb_fd, 0);
if (omb_fb_map == MAP_FAILED) {
omb_log(LOG_ERROR, "failed to map framebuffer device to memory");
return OMB_ERROR;
}
omb_log(LOG_DEBUG, "the framebuffer device was mapped to memory successfully");
return OMB_SUCCESS;
}
int omb_read_screen_info()
{
if (ioctl(omb_fb_fd, FBIOGET_FSCREENINFO, &omb_fix_screen_info) == -1) {
omb_log(LOG_ERROR, "cannot read fixed information");
return OMB_ERROR;
}
if (ioctl(omb_fb_fd, FBIOGET_VSCREENINFO, &omb_var_screen_info) == -1) {
omb_log(LOG_ERROR, "cannot read variable information");
return OMB_ERROR;
}
omb_log(LOG_DEBUG, "current mode is %dx%d, %dbpp, stride %d",
omb_var_screen_info.xres, omb_var_screen_info.yres, omb_var_screen_info.bits_per_pixel, omb_fix_screen_info.line_length);
omb_screen_size = omb_fix_screen_info.smem_len;//omb_var_screen_info.xres * omb_var_screen_info.yres * omb_var_screen_info.bits_per_pixel / 8;
return OMB_SUCCESS;
}
int main(int argc, char *argv[])
{
int is_rebooting = 0;
if (argc > 1 && getppid() > 1) {
omb_log(LOG_DEBUG, "argc > 1, before sysvinit");
omb_utils_sysvinit(NULL, argv[1]);
omb_log(LOG_DEBUG, "argc > 1, after sysvinit");
}
else {
omb_utils_init_system();
omb_device_item *item = NULL;
omb_device_item *items = NULL;
char *selected = NULL;
char *nextboot = NULL;
omb_log(LOG_DEBUG, "Before find_and_mount if");
if (omb_utils_find_and_mount() == OMB_SUCCESS) {
omb_log(LOG_DEBUG, "Inside find_and_mount if");
items = omb_utils_get_images();
omb_menu_set(items);
selected = omb_utils_read(OMB_SETTINGS_SELECTED);
if (!selected) {
selected = malloc(6);
strcpy(selected, "flash");
}
omb_menu_set_selected(selected);
item = omb_menu_get_selected();
}
omb_log(LOG_DEBUG, "After find_and_mount if");
omb_log(LOG_DEBUG, "Before load modules");
omb_utils_load_modules(item);
omb_log(LOG_DEBUG, "After load modules");
int force = omb_utils_read_int(OMB_SETTINGS_FORCE);
omb_log(LOG_DEBUG, "Before !force and items if");
if (!force && items) {
omb_log(LOG_DEBUG, "Inside !force and items if");
omb_utils_update_background(item);
omb_utils_backup_kernel(item);
nextboot = omb_utils_read(OMB_SETTINGS_NEXTBOOT);
if (nextboot) {
omb_menu_set_selected(nextboot);
omb_utils_remove_nextboot();
item = omb_menu_get_selected();
omb_utils_update_background(item);
free(nextboot);
}
omb_show_menu();
}
else {
omb_utils_save_int(OMB_SETTINGS_FORCE, 0);
}
omb_log(LOG_DEBUG, "After !force and items if");
item = omb_menu_get_selected();
omb_log(LOG_DEBUG, "Before selected if");
if (item && selected && strcmp(selected, item->identifier) != 0) {
omb_log(LOG_DEBUG, "Inside selected if");
omb_utils_restore_kernel(item);
omb_utils_save(OMB_SETTINGS_SELECTED, item->identifier);
omb_utils_save_int(OMB_SETTINGS_FORCE, 1);
omb_utils_umount(OMB_MAIN_DIR);
omb_utils_reboot();
is_rebooting = 1;
}
omb_log(LOG_DEBUG, "Before !is rebooting if");
if (!is_rebooting) {
omb_log(LOG_DEBUG, "Inside !is rebooting if");
if (item != NULL && strcmp(item->identifier, "flash") != 0)
omb_utils_remount_media(item);
omb_utils_umount(OMB_MAIN_DIR);
omb_utils_sysvinit(item, NULL);
}
omb_log(LOG_DEBUG, "Before frees");
if (items) omb_utils_free_items(items);
if (selected) free(selected);
}
omb_log(LOG_DEBUG, "Before end of main");
return OMB_SUCCESS;
}
void omb_blit()
{
if (ioctl(omb_fb_fd, FBIO_BLIT) == -1)
omb_log(LOG_WARNING, "cannot blit the framebuffer");
}
