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/*
* ADT Line Echo Canceller Parameter Parsing
*
* Copyright (C) 2008-2009 Digium, Inc.
*
* Kevin P. Fleming <kpfleming@digium.com>
*
* All rights reserved.
*
*/
/*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2 as published by the
* Free Software Foundation. See the LICENSE file included with
* this program for more details.
*/
#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)
{
params->tap_length = tap_length;
params->nlp_type = 0;
params->nlp_max_suppress = 0;
params->nlp_threshold = 0;
}
static int adt_lec_parse_params(struct adt_lec_params *params,
struct dahdi_echocanparams *ecp, struct dahdi_echocanparam *p)
{
unsigned int x;
char *c;
params->tap_length = ecp->tap_length;
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 */
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