--- /dev/null
+#ifndef _RS_PARM_H
+#define _RS_PARM_H
+
+// (255,171); pretty much 50% overhead, can protect against loss bursts of
+// 84 packets (more if they straddle blocks). Sounds overkill, but sometimes
+// conditions can be really really crappy...
+#define RS_SYM_SIZE 255
+#define RS_PARITY_SIZE 84
+#define RS_PAD 0
+
+#define RS_GF_POLY 0x11d // Taken from rstest.c.
+#define RS_GROUP_SIZE (RS_SYM_SIZE - RS_PAD)
+#define RS_PAYLOAD_SIZE (RS_GROUP_SIZE - RS_PARITY_SIZE)
+
+#endif /* !defined_(RS_PARM_H) */