Mercurial > hg > audiostuff
comparison spandsp-0.0.6pre17/tests/echo_monitor.h @ 4:26cd8f1ef0b1
import spandsp-0.0.6pre17
| author | Peter Meerwald <pmeerw@cosy.sbg.ac.at> |
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| date | Fri, 25 Jun 2010 15:50:58 +0200 |
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| 3:c6c5a16ce2f2 | 4:26cd8f1ef0b1 |
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| 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 1.12 2008/04/26 13:39:16 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 #if defined(__cplusplus) | |
| 46 extern "C" | |
| 47 { | |
| 48 #endif | |
| 49 | |
| 50 int start_echo_can_monitor(int len); | |
| 51 int echo_can_monitor_can_update(const int16_t *coeffs, int len); | |
| 52 int echo_can_monitor_line_model_update(const int32_t *coeffs, int len); | |
| 53 int echo_can_monitor_line_spectrum_update(const int16_t amp[], int len); | |
| 54 void echo_can_monitor_wait_to_end(void); | |
| 55 void echo_can_monitor_update_display(void); | |
| 56 | |
| 57 #if defined(__cplusplus) | |
| 58 } | |
| 59 #endif | |
| 60 | |
| 61 #endif | |
| 62 /*- End of file ------------------------------------------------------------*/ |