X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=src%2Fcore%2Fao_fec.h;h=f3f55fa82760b3cd5f6171de7810f83ed7e333cb;hb=b292c14790fc225029cba3f80ce8ad6c5652bc4e;hp=db5523a36c94c61299e1939087638a4f38aae957;hpb=75e4521ec42a368cebc67a07f8713d7a854ea265;p=fw%2Faltos

diff --git a/src/core/ao_fec.h b/src/core/ao_fec.h
index db5523a3..f3f55fa8 100644
--- a/src/core/ao_fec.h
+++ b/src/core/ao_fec.h
@@ -24,12 +24,22 @@
 #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
@@ -42,19 +52,27 @@ ao_fec_prepare(uint8_t *in, uint8_t len, uint8_t *out);
  * 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
+ * Decode data. 'in' is one byte per bit, soft decision
+ * 'out' must be len/8 bytes long
  */
+
 uint8_t
-ao_fec_interleave(uint8_t *in, uint8_t len, uint8_t *out);
+ao_fec_decode(uint8_t *in, uint16_t in_len, uint8_t *out);
+
+/*
+ * 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_ */