extern fn SDL_Init() int;
extern fn SDL_Quit() void;
extern fn SDL_GetError() *const u8;
extern fn SDL_Delay(u32) void;

struct SDL_Window;
extern fn SDL_CreateWindow(title *const u8, x int, y int, w int, h int, flags u32) *SDL_Window;
extern fn SDL_DestroyWindow(*SDL_Window) void;

struct SDL_PixelFormat;
struct SDL_BlitMap;

struct SDL_Rect {
   x int, y int, w int, h int
}

struct SDL_Surface {
   _flags u32,
   format *SDL_PixelFormat,
   w int, h int,
   pitch int,
   pixels *void,
   userdata *void,
   _locked intbool,
   _lock_data *void,
   clip_rect SDL_Rect,
   _map *SDL_BlitMap,
   refcount int,
}
extern fn SDL_CreateRGBSurface(
   flags u32, width int, height int, depth int, Rmask u32, Gmask u32, Bmask u32, Amask u32
) *SDL_Surface;
extern fn SDL_GetWindowSurface(*SDL_Window) *SDL_Surface;
extern fn SDL_UpdateWindowSurface(*SDL_Window) int;
extern fn SDL_UpperBlit(src *SDL_Surface, srcrect *SDL_Rect, dst *SDL_Surface, dstrect *SDL_Rect) int;

union SDL_Event {
   t enum { quit = 0x100 },
   _pad [8]f64, // idc exactly how big this union is but this should suffice
}
extern fn SDL_PollEvent(evt *SDL_Event) intbool;

extern fn SDL_QueueAudio(dev int, data *const void, len u32) int;