5
|
1 /*
|
|
2 * SpanDSP - a series of DSP components for telephony
|
|
3 *
|
|
4 * echo_monitor.h - Display echo canceller status, using the FLTK toolkit.
|
|
5 *
|
|
6 * Written by Steve Underwood <steveu@coppice.org>
|
|
7 *
|
|
8 * Copyright (C) 2004 Steve Underwood
|
|
9 *
|
|
10 * All rights reserved.
|
|
11 *
|
|
12 * This program is free software; you can redistribute it and/or modify
|
|
13 * it under the terms of the GNU General Public License version 2, as
|
|
14 * published by the Free Software Foundation.
|
|
15 *
|
|
16 * This program is distributed in the hope that it will be useful,
|
|
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
19 * GNU General Public License for more details.
|
|
20 *
|
|
21 * You should have received a copy of the GNU General Public License
|
|
22 * along with this program; if not, write to the Free Software
|
|
23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
24 *
|
|
25 * $Id: echo_monitor.h,v 1.7 2006/10/24 13:22:02 steveu Exp $
|
|
26 */
|
|
27
|
|
28 /*! \page echo_monitor_page Echo canceller performance monitoring
|
|
29 \section echo_monitor_page_sec_1 What does it do?
|
|
30 This code controls a GUI window, which provides monitoring of the internal status
|
|
31 of a time domain echo canceller. It shows, graphically:
|
|
32
|
|
33 - the spectrum of the received signal.
|
|
34 - the line model in use (when a known line model is being used).
|
|
35 - the adapted coefficients of the canceller.
|
|
36
|
|
37 \section echo_monitor_page_sec_2 How does it work?
|
|
38 This code uses the FLTK cross platform GUI toolkit. It works on X11 and Windows platforms.
|
|
39 In addition to the basic FLTK toolkit, fltk_cartesian is also required.
|
|
40 */
|
|
41
|
|
42 #if !defined(_ECHO_MONITOR_H_)
|
|
43 #define _ECHO_MONITOR_H_
|
|
44
|
|
45 #ifdef __cplusplus
|
|
46 extern "C" {
|
|
47 #endif
|
|
48
|
|
49 int start_echo_can_monitor(int len);
|
|
50 int echo_can_monitor_can_update(const int16_t *coeffs, int len);
|
|
51 int echo_can_monitor_line_model_update(const int32_t *coeffs, int len);
|
|
52 int echo_can_monitor_line_spectrum_update(const int16_t amp[], int len);
|
|
53 void echo_can_monitor_wait_to_end(void);
|
|
54 void echo_can_monitor_update_display(void);
|
|
55
|
|
56 #ifdef __cplusplus
|
|
57 }
|
|
58 #endif
|
|
59
|
|
60 #endif
|
|
61 /*- End of file ------------------------------------------------------------*/
|