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authortzafrir <tzafrir@5390a7c7-147a-4af0-8ec9-7488f05a26cb>2008-02-04 23:00:48 +0000
committertzafrir <tzafrir@5390a7c7-147a-4af0-8ec9-7488f05a26cb>2008-02-04 23:00:48 +0000
commit7e068801fbf82413ac0a5e63e586c268bd457434 (patch)
tree9b61e9a4e07167e0b7d347e4336245724befa29c /kernel/adt_lec.c
parent29daeebad888269fa0ee2ca7e54e238c8498ca2d (diff)
Move kernel stuff to under kernel/
(merged branch /zaptel/team/tzafrir/move ) Closes issue #7117. git-svn-id: http://svn.digium.com/svn/zaptel/branches/1.4@3793 5390a7c7-147a-4af0-8ec9-7488f05a26cb
Diffstat (limited to 'kernel/adt_lec.c')
-rw-r--r--kernel/adt_lec.c68
1 files changed, 68 insertions, 0 deletions
diff --git a/kernel/adt_lec.c b/kernel/adt_lec.c
new file mode 100644
index 0000000..d191e2b
--- /dev/null
+++ b/kernel/adt_lec.c
@@ -0,0 +1,68 @@
+/*
+ * ADT Line Echo Canceller Parameter Parsing
+ *
+ * Copyright (C) 2008 Digium, Inc.
+ *
+ * Kevin P. Fleming <kpfleming@digium.com>
+ *
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef _ADT_LEC_C
+#define _ADT_LEC_C
+
+#include <linux/ctype.h>
+
+static inline void adt_lec_init_defaults(struct adt_lec_params *params, __u32 tap_length)
+{
+ memset(params, 0, sizeof(*params));
+ params->tap_length = tap_length;
+}
+
+static int adt_lec_parse_params(struct adt_lec_params *params, struct zt_echocanparams *ecp, struct zt_echocanparam *p)
+{
+ unsigned int x;
+ char *c;
+
+ for (x = 0; x < ecp->param_count; x++) {
+ for (c = p[x].name; *c; c++)
+ *c = tolower(*c);
+ if (!strcmp(p[x].name, "nlp_type")) {
+ switch (p[x].value) {
+ case ADT_LEC_NLP_OFF:
+ case ADT_LEC_NLP_MUTE:
+ case ADT_LEC_RANDOM_NOISE:
+ case ADT_LEC_HOTH_NOISE:
+ case ADT_LEC_SUPPRESS:
+ params->nlp_type = p[x].value;
+ break;
+ default:
+ return -EINVAL;
+ }
+ } else if (!strcmp(p[x].name, "nlp_thresh")) {
+ params->nlp_threshold = p[x].value;
+ } else if (!strcmp(p[x].name, "nlp_suppress")) {
+ params->nlp_max_suppress = p[x].value;
+ } else {
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
+#endif /* _ADT_LEC_C */