-/* @{ */
-#define SDL_RWsize(ctx) (ctx)->size(ctx)
-#define SDL_RWseek(ctx, offset, whence) (ctx)->seek(ctx, offset, whence)
-#define SDL_RWtell(ctx) (ctx)->seek(ctx, 0, RW_SEEK_CUR)
-#define SDL_RWread(ctx, ptr, size, n) (ctx)->read(ctx, ptr, size, n)
-#define SDL_RWwrite(ctx, ptr, size, n) (ctx)->write(ctx, ptr, size, n)
-#define SDL_RWclose(ctx) (ctx)->close(ctx)
-/* @} *//* Read/write macros */
+extern DECLSPEC Sint64 SDLCALL SDL_RWseek(SDL_RWops *context,
+ Sint64 offset, int whence);
+
+/**
+ * Return the current offset in the data stream, or -1 on error.
+ */
+extern DECLSPEC Sint64 SDLCALL SDL_RWtell(SDL_RWops *context);
+
+/**
+ * Read up to \c maxnum objects each of size \c size from the data
+ * stream to the area pointed at by \c ptr.
+ *
+ * \return the number of objects read, or 0 at error or end of file.
+ */
+extern DECLSPEC size_t SDLCALL SDL_RWread(SDL_RWops *context,
+ void *ptr, size_t size, size_t maxnum);
+
+/**
+ * Write exactly \c num objects each of size \c size from the area
+ * pointed at by \c ptr to data stream.
+ *
+ * \return the number of objects written, or 0 at error or end of file.
+ */
+extern DECLSPEC size_t SDLCALL SDL_RWwrite(SDL_RWops *context,
+ const void *ptr, size_t size, size_t num);
+
+/**
+ * Close and free an allocated SDL_RWops structure.
+ *
+ * \return 0 if successful or -1 on write error when flushing data.
+ */
+extern DECLSPEC int SDLCALL SDL_RWclose(SDL_RWops *context);