SDL_Surface *SDL_CreateRGBSurfaceFrom(void *pixels, int width, int height, int _
  depth, int pitch, Uint32 Rmask, Uint32 Gmask, Uint32 Bmask, Uint32 Amask);

typedef struct SDL_Surface {
	Uint32 flags;				/* Read-only */
	SDL_PixelFormat *format;		/* Read-only */
	int w, h;				/* Read-only */
	Uint16 pitch;				/* Read-only */
	void *pixels;				/* Read-write */
	int offset;				/* Private */
 
	/* Hardware-specific surface info */
	struct private_hwdata *hwdata;
 
	/* clipping information */
	SDL_Rect clip_rect;			/* Read-only */
	Uint32 unused1;				/* for binary compatibility */
 
	/* Allow recursive locks */
	Uint32 locked;				/* Private */
 
	/* info for fast blit mapping to other surfaces */
	struct SDL_BlitMap *map;		/* Private */
 
	/* format version, bumped at every change to invalidate blit maps */
	unsigned int format_version;		/* Private */
 
	/* Reference count -- used when freeing surface */
	int refcount;				/* Read-mostly */
} SDL_Surface;

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