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authorJean-Francois Dionne <jf.dionne@nutaq.com>2017-04-27 10:11:31 -0400
committerHarald Welte <laforge@gnumonks.org>2017-06-09 08:14:18 +0000
commit43058efa939f36069cdac82f356bdc94ee10d0fc (patch)
tree51bc6ad08597ef2685d0d69616b97555b4b614e2 /src
parent3851e8ea7af8212c6bd86d870277eb1c238b6e78 (diff)
Fix wrongful GSM FR codec SID frame detection in DTX.
Based on ETSI TS 101 318 section 5.1.2 the 95 bits SID code word is not detected correctly due to a wrongful offset in the bits location indexes. Change-Id: I45d98c6edf267f313883503a65385190ffbc65ca
Diffstat (limited to 'src')
-rw-r--r--src/codec/gsm610.c20
1 files changed, 10 insertions, 10 deletions
diff --git a/src/codec/gsm610.c b/src/codec/gsm610.c
index 47faea21..165484df 100644
--- a/src/codec/gsm610.c
+++ b/src/codec/gsm610.c
@@ -306,16 +306,16 @@ const uint16_t gsm610_bitorder[260] = {
bool osmo_fr_check_sid(uint8_t *rtp_payload, size_t payload_len)
{
struct bitvec bv;
- uint16_t i, z_bits[] = { 59, 60, 62, 63, 65, 66, 68, 69, 71, 72, 74, 75,
- 77, 78, 80, 81, 83, 84, 86, 87, 89, 90, 92, 93,
- 95, 96, 115, 116, 118, 119, 121, 122, 124, 125,
- 127, 128, 130, 131, 133, 134, 136, 137, 139,
- 140, 142, 143, 145, 146, 148, 149, 151, 152,
- 171, 172, 174, 175, 177, 178, 180, 181, 183,
- 184, 186, 187, 189, 190, 192, 193, 195, 196,
- 198, 199, 201, 202, 204, 205, 207, 208, 227,
- 228, 230, 231, 233, 234, 236, 237, 239, 242,
- 245, 248, 251, 254, 257, 260, 263 };
+ uint16_t i, z_bits[] = { 57, 58, 60, 61, 63, 64, 66, 67, 69, 70, 72, 73,
+ 75, 76, 78, 79, 81, 82, 84, 85, 87, 88, 90, 91,
+ 93, 94, 113, 114, 116, 117, 119, 120, 122, 123,
+ 125, 126, 128, 129, 131, 132, 134, 135, 137,
+ 138, 140, 141, 143, 144, 146, 147, 149, 150,
+ 169, 170, 172, 173, 175, 176, 178, 179, 181,
+ 182, 184, 185, 187, 188, 190, 191, 193, 194,
+ 196, 197, 199, 200, 202, 203, 205, 206, 225,
+ 226, 228, 229, 231, 232, 234, 235, 237, 240,
+ 243, 246, 249, 252, 255, 258, 261 };
/* signature does not match Full Rate SID */
if ((rtp_payload[0] >> 4) != 0xD)