X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=src%2Fcore%2Fao_viterbi.c;h=7768155669847c62ebb77ad87968f904bc3dd917;hp=594c0d91bdbf51be2e79180ba7f639ba2d615df2;hb=628076aa90e7bc9a894646e417dd8e1fe149b60d;hpb=70cf32e89df19bde5185339fc703532c8a5b8be6

diff --git a/src/core/ao_viterbi.c b/src/core/ao_viterbi.c
index 594c0d91..77681556 100644
--- a/src/core/ao_viterbi.c
+++ b/src/core/ao_viterbi.c
@@ -91,7 +91,7 @@ ao_cost(struct ao_soft_sym a, struct ao_soft_sym b)
  */
 
 uint8_t
-ao_fec_decode(uint8_t *in, uint16_t len, uint8_t *out)
+ao_fec_decode(uint8_t *in, uint16_t len, uint8_t *out, uint8_t out_len)
 {
 	static uint16_t	cost[2][NUM_STATE];		/* path cost */
 	static uint16_t	bits[2][NUM_STATE];		/* save bits to quickly output them */
@@ -203,7 +203,10 @@ ao_fec_decode(uint8_t *in, uint16_t len, uint8_t *out)
 			printf ("\tbit %3d min_cost %5d old bit %3d old_state %x bits %02x whiten %0x\n",
 				i/2, min_cost, o + 8, min_state, (bits[p][min_state] >> dist) & 0xff, *whiten);
 #endif
-			*out++ = (bits[p][min_state] >> dist) ^ *whiten++;
+			if (out_len) {
+				*out++ = (bits[p][min_state] >> dist) ^ *whiten++;
+				--out_len;
+			}
 			o += 8;
 		}
 	}