From: Matthew Nicholson <mnicholson@digium.com>
Date: Thu, 14 Jul 2011 17:46:32 +0000 (+0000)
Subject: tune the v21 preamble detector to properly detect the desired sequence of hits
X-Git-Tag: 10.0.0-beta1~3^2~28
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9a45f89c009d5bf61de8c53a244c984f2fcbfe97;p=thirdparty%2Fasterisk.git

tune the v21 preamble detector to properly detect the desired sequence of hits
and misses


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.10@328162 65c4cc65-6c06-0410-ace0-fbb531ad65f3
---

diff --git a/main/dsp.c b/main/dsp.c
index 02cdc9d73c..da982d0c14 100644
--- a/main/dsp.c
+++ b/main/dsp.c
@@ -624,10 +624,10 @@ static int v21_detect(struct ast_dsp *dsp, v21_detect_state_t *s, int16_t *amp,
 		}
 
 		if (hit) {
-			if (s->hit_count == 0 || s->miss_count == 3) {
+			if (s->miss_count == 3) {
 				s->hit_count++;
 			} else {
-				s->hit_count = 0;
+				s->hit_count = 1;
 			}
 
 			s->miss_count = 0;