74 lines
1.7 KiB
C
74 lines
1.7 KiB
C
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/*
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* ADT Line Echo Canceller Parameter Parsing
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*
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* Copyright (C) 2008-2009 Digium, Inc.
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*
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* Kevin P. Fleming <kpfleming@digium.com>
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*
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* All rights reserved.
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*
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*/
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/*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2 as published by the
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* Free Software Foundation. See the LICENSE file included with
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* this program for more details.
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*/
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#ifndef _ADT_LEC_C
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#define _ADT_LEC_C
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#include <linux/ctype.h>
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static inline void adt_lec_init_defaults(struct adt_lec_params *params, __u32 tap_length)
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{
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params->tap_length = tap_length;
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params->nlp_type = 0;
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params->nlp_max_suppress = 0;
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params->nlp_threshold = 0;
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}
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static int adt_lec_parse_params(struct adt_lec_params *params,
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struct dahdi_echocanparams *ecp, struct dahdi_echocanparam *p)
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{
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unsigned int x;
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char *c;
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params->tap_length = ecp->tap_length;
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for (x = 0; x < ecp->param_count; x++) {
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for (c = p[x].name; *c; c++)
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*c = tolower(*c);
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if (!strcmp(p[x].name, "nlp_type")) {
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switch (p[x].value) {
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case ADT_LEC_NLP_OFF:
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case ADT_LEC_NLP_MUTE:
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case ADT_LEC_RANDOM_NOISE:
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case ADT_LEC_HOTH_NOISE:
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case ADT_LEC_SUPPRESS:
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params->nlp_type = p[x].value;
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break;
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default:
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return -EINVAL;
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}
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} else if (!strcmp(p[x].name, "nlp_thresh")) {
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params->nlp_threshold = p[x].value;
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} else if (!strcmp(p[x].name, "nlp_suppress")) {
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params->nlp_max_suppress = p[x].value;
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} else {
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return -EINVAL;
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}
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}
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return 0;
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}
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#endif /* _ADT_LEC_C */
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