chore(build): revert to sdl2

vendor/sdl-2.30.5/src/video/SDL_pixels_c.h

@@ -0,0 +1,49 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2024 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+#ifndef SDL_pixels_c_h_
+#define SDL_pixels_c_h_
+
+#include "../SDL_internal.h"
+
+/* Useful functions and variables from SDL_pixel.c */
+
+#include "SDL_blit.h"
+
+/* Pixel format functions */
+extern int SDL_InitFormat(SDL_PixelFormat *format, Uint32 pixel_format);
+
+/* Blit mapping functions */
+extern SDL_BlitMap *SDL_AllocBlitMap(void);
+extern void SDL_InvalidateMap(SDL_BlitMap *map);
+extern int SDL_MapSurface(SDL_Surface *src, SDL_Surface *dst);
+extern void SDL_FreeBlitMap(SDL_BlitMap *map);
+
+extern void SDL_InvalidateAllBlitMap(SDL_Surface *surface);
+
+/* Miscellaneous functions */
+extern void SDL_DitherColors(SDL_Color *colors, int bpp);
+extern Uint8 SDL_FindColor(SDL_Palette *pal, Uint8 r, Uint8 g, Uint8 b, Uint8 a);
+extern void SDL_DetectPalette(SDL_Palette *pal, SDL_bool *is_opaque, SDL_bool *has_alpha_channel);
+
+#endif /* SDL_pixels_c_h_ */
+
+/* vi: set ts=4 sw=4 expandtab: */