#define AO_FEC_TRELLIS_TERMINATOR 0x0b
#define AO_FEC_PREPARE_EXTRA 4
+extern const uint8_t ao_fec_whiten_table[];
+
void
-ao_fec_dump_bytes(uint8_t *bytes, uint8_t len, char *name);
+ao_fec_dump_bytes(uint8_t *bytes, uint16_t len, char *name);
uint16_t
ao_fec_crc(uint8_t *bytes, uint8_t len);
+/*
+ * 'len' is the length of the original data; 'bytes'
+ * must be four bytes longer than that, and the first
+ * two after 'len' must be the received crc
+ */
+uint8_t
+ao_fec_check_crc(uint8_t *bytes, uint8_t len);
+
/*
* Append CRC and terminator bytes, returns resulting length.
* 'out' must be at least len + AO_FEC_PREPARE_EXTRA bytes long
* must be 'len' bytes long. 'out' and 'in' can be
* the same array
*/
-uint8_t
+void
ao_fec_whiten(uint8_t *in, uint8_t len, uint8_t *out);
/*
- * Encode data. 'out' must be len*2 bytes long
+ * Encode and interleave data. 'out' must be len*2 bytes long
*/
uint8_t
ao_fec_encode(uint8_t *in, uint8_t len, uint8_t *out);
-/*
- * Interleave data. 'out' must be 'len' bytes long
- */
-uint8_t
-ao_fec_interleave(uint8_t *in, uint8_t len, uint8_t *out);
-
-
/*
* Decode data. 'in' is one byte per bit, soft decision
* 'out' must be len/8 bytes long
*/
+#define AO_FEC_DECODE_BLOCK (8 * 32) /* callback must return multiples of this many bits */
+
uint8_t
-ao_fec_decode(uint8_t *in, int in_len, uint8_t *out);
+ao_fec_decode(uint8_t *in, uint16_t in_len, uint8_t *out, uint8_t out_len, uint16_t (*callback)());
+
+/*
+ * Interleave data packed in bytes. 'out' must be 'len' bytes long.
+ */
+uint16_t
+ao_fec_interleave_bytes(uint8_t *in, uint16_t len, uint8_t *out);
#endif /* _AO_FEC_H_ */