Create echo "Pretraining" ioctl

git-svn-id: http://svn.digium.com/svn/zaptel/trunk@260 5390a7c7-147a-4af0-8ec9-7488f05a26cb

1 files changed, 13 insertions, 1 deletions

diff --git a/mec2.h b/mec2.h
index 92cc011..a24b01a 100755
--- a/mec2.h
+++ b/mec2.h
@@ -391,6 +391,18 @@ static inline echo_can_state_t *echo_can_create(int len, int adaption_mode)
 	return ec;
 }
 
-
+static inline int echo_can_traintap(echo_can_state_t *ec, int pos, short val)
+{
+	/* Reset hang counter to avoid adjustments after
+	   initial forced training */
+	ec->HCNTR_d = ec->N_d << 1;
+	if (pos >= ec->N_d)
+		return 1;
+	ec->a_i[pos] = val << 17;
+	ec->a_s[pos] = val << 1;
+	if (++pos >= ec->N_d)
+		return 1;
+	return 0;
+}
 
 #endif