Simplified SDL_Surface

SDL_Surface has been simplified and internal details are no longer in the public structure.

The `format` member of SDL_Surface is now an enumerated pixel format value. You can get the full details of the pixel format by calling `SDL_GetPixelFormatDetails(surface->format)`. You can get the palette associated with the surface by calling SDL_GetSurfacePalette(). You can get the clip rectangle by calling SDL_GetSurfaceClipRect().

SDL_PixelFormat has been renamed SDL_PixelFormatDetails and just describes the pixel format, it does not include a palette for indexed pixel types.

SDL_PixelFormatEnum has been renamed SDL_PixelFormat and is used instead of Uint32 for API functions that refer to pixel format by enumerated value.

SDL_MapRGB(), SDL_MapRGBA(), SDL_GetRGB(), and SDL_GetRGBA() take an optional palette parameter for indexed color lookups.

include/SDL3/SDL_camera.h

@@ -78,7 +78,7 @@ typedef struct SDL_Camera SDL_Camera;
  */
 typedef struct SDL_CameraSpec
 {
-    SDL_PixelFormatEnum format; /**< Frame format */
+    SDL_PixelFormat format;     /**< Frame format */
     SDL_Colorspace colorspace;  /**< Frame colorspace */
     int width;                  /**< Frame width */
     int height;                 /**< Frame height */