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/*
* 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 */
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