-struct ScreenModeInfo *get_screen_mode_from_string(char *screen_mode_string)
-{
- static struct ScreenModeInfo screen_mode;
- char *screen_mode_string_x = strchr(screen_mode_string, 'x');
- char *screen_mode_string_copy;
- char *screen_mode_string_pos_w;
- char *screen_mode_string_pos_h;
-
- if (screen_mode_string_x == NULL) /* invalid screen mode format */
- return NULL;
-
- screen_mode_string_copy = getStringCopy(screen_mode_string);
-
- screen_mode_string_pos_w = screen_mode_string_copy;
- screen_mode_string_pos_h = strchr(screen_mode_string_copy, 'x');
- *screen_mode_string_pos_h++ = '\0';
-
- screen_mode.width = atoi(screen_mode_string_pos_w);
- screen_mode.height = atoi(screen_mode_string_pos_h);
-
- return &screen_mode;
-}
-
-void get_aspect_ratio_from_screen_mode(struct ScreenModeInfo *screen_mode,
- int *x, int *y)
-{
- float aspect_ratio = (float)screen_mode->width / (float)screen_mode->height;
- float aspect_ratio_new;
- int i = 1;
-
- do
- {
- *x = i * aspect_ratio + 0.000001;
- *y = i;
-
- aspect_ratio_new = (float)*x / (float)*y;
-
- i++;
- }
- while (aspect_ratio_new != aspect_ratio && *y < screen_mode->height);
-}
-