SDL_CreateRGBSurfaceFrom (3) - Linux Manuals
SDL_CreateRGBSurfaceFrom: Create an SDL_Surface from pixel data
NAMESDL_CreateRGBSurfaceFrom - Create an SDL_Surface from pixel data
Creates an SDL_Surface from the provided pixel data.
The data stored in pixels is assumed to be of the depth specified in the parameter list. The pixel data is not copied into the SDL_Surface structure so it should not be freed until the surface has been freed with a called to SDL_FreeSurface. pitch is the length of each scanline in bytes.