122 lines
2.6 KiB
C
122 lines
2.6 KiB
C
/*
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* dsp_mec2.c: mISDN dsp pipeline element for the mec2 echo canceller
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*
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* Copyright (C) 2007, Nadi Sarrar
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*
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* Nadi Sarrar <nadi@beronet.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 59
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* Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* The full GNU General Public License is included in this distribution in the
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* file called LICENSE.
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*
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/string.h>
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#include <linux/mISDNdsp.h>
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#include "dsp_mec2.h"
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#include "dsp_cancel.h"
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static void* new (const char *arg)
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{
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int deftaps = 128,
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training = 0,
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len;
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if (!arg)
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goto _out;
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len = strlen(arg);
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if (!len)
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goto _out;
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{
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char _dup[len + 1];
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char *dup, *tok, *name, *val;
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int tmp;
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strcpy(_dup, arg);
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dup = _dup;
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while ((tok = strsep(&dup, ","))) {
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if (!strlen(tok))
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continue;
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name = strsep(&tok, "=");
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val = tok;
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if (!val)
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continue;
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if (!strcmp(name, "deftaps")) {
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if (sscanf(val, "%d", &tmp) == 1)
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deftaps = tmp;
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} else if (!strcmp(name, "training")) {
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if (sscanf(val, "%d", &tmp) == 1)
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training = tmp;
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}
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}
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}
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_out:
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printk(KERN_DEBUG "%s: creating %s with deftaps=%d and training=%d\n", __FUNCTION__, EC_TYPE, deftaps, training);
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return dsp_cancel_new(deftaps, training);
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}
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static void free (void *p)
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{
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dsp_cancel_free(p);
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}
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static void process_tx (void *p, u8 *data, int len)
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{
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dsp_cancel_tx(p, data, len);
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}
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static void process_rx (void *p, u8 *data, int len)
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{
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dsp_cancel_rx(p, data, len);
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}
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static mISDN_dsp_element_t dsp_mec2 = {
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.new = new,
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.free = free,
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.process_tx = process_tx,
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.process_rx = process_rx,
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.name = "mec2",
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};
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#ifdef MODULE
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static int __init dsp_mec2_init (void)
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{
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mISDN_dsp_element_register(&dsp_mec2);
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return 0;
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}
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static void __exit dsp_mec2_exit (void)
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{
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mISDN_dsp_element_unregister(&dsp_mec2);
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}
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module_init(dsp_mec2_init);
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module_exit(dsp_mec2_exit);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Nadi Sarrar <nadi@beronet.com>");
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#endif
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