+#if (G_BYTE_ORDER == G_BIG_ENDIAN)
+#define RrDefaultRedOffset 0
+#define RrDefaultGreenOffset 8
+#define RrDefaultBlueOffset 16
+#define RrDefaultAlphaOffset 24
+#define RrEndian MSBFirst
+#else
+#define RrDefaultAlphaOffset 24
+#define RrDefaultRedOffset 16
+#define RrDefaultGreenOffset 8
+#define RrDefaultBlueOffset 0
+#define RrEndian LSBFirst
+#endif /* G_BYTE_ORDER == G_BIG_ENDIAN */
+