Provided by: libsdl3-doc_3.2.20+ds-2_all 

NAME
SDL_FOURCC - Define a four character code as a Uint32.
SYNOPSIS
#include <SDL3/SDL_stdinc.h>
#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.
AVAILABILITY
This macro is available since SDL 3.2.0.
Simple Directmedia Layer SDL 3.2.20 SDL_FOURCC(3)