###### (This is the documentation for SDL3, which is the current stable version. [SDL2](https://wiki.libsdl.org/SDL2/) was the previous version!) # SDL_FOURCC Define a four character code as a Uint32. ## Header File Defined in [](https://github.com/libsdl-org/SDL/blob/main/include/SDL3/SDL_stdinc.h) ## Syntax ```c #define SDL_FOURCC(A, B, C, D) \ ((SDL_static_cast(Uint32, SDL_static_cast(Uint8, (A))) << 0) | \ (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (B))) << 8) | \ (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (C))) << 16) | \ (SDL_static_cast(Uint32, SDL_static_cast(Uint8, (D))) << 24)) ``` ## Macro Parameters | | | | ----- | --------------------------- | | **A** | the first ASCII character. | | **B** | the second ASCII character. | | **C** | the third ASCII character. | | **D** | the fourth ASCII character. | ## Return Value Returns the four characters converted into a Uint32, one character per-byte. ## Thread Safety It is safe to call this macro from any thread. ## Version This macro is available since SDL 3.1.3. ---- [CategoryAPI](CategoryAPI), [CategoryAPIMacro](CategoryAPIMacro), [CategoryStdinc](CategoryStdinc)