Mercurial > hg > audiostuff
diff spandsp-0.0.3/spandsp-0.0.3/tests/echo_monitor.h @ 5:f762bf195c4b
import spandsp-0.0.3
author | Peter Meerwald <pmeerw@cosy.sbg.ac.at> |
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date | Fri, 25 Jun 2010 16:00:21 +0200 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/spandsp-0.0.3/spandsp-0.0.3/tests/echo_monitor.h Fri Jun 25 16:00:21 2010 +0200 @@ -0,0 +1,61 @@ +/* + * SpanDSP - a series of DSP components for telephony + * + * echo_monitor.h - Display echo canceller status, using the FLTK toolkit. + * + * Written by Steve Underwood <steveu@coppice.org> + * + * Copyright (C) 2004 Steve Underwood + * + * 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 version 2, as + * published by the Free Software Foundation. + * + * 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. + * + * $Id: echo_monitor.h,v 1.7 2006/10/24 13:22:02 steveu Exp $ + */ + +/*! \page echo_monitor_page Echo canceller performance monitoring +\section echo_monitor_page_sec_1 What does it do? +This code controls a GUI window, which provides monitoring of the internal status +of a time domain echo canceller. It shows, graphically: + + - the spectrum of the received signal. + - the line model in use (when a known line model is being used). + - the adapted coefficients of the canceller. + +\section echo_monitor_page_sec_2 How does it work? +This code uses the FLTK cross platform GUI toolkit. It works on X11 and Windows platforms. +In addition to the basic FLTK toolkit, fltk_cartesian is also required. +*/ + +#if !defined(_ECHO_MONITOR_H_) +#define _ECHO_MONITOR_H_ + +#ifdef __cplusplus +extern "C" { +#endif + + int start_echo_can_monitor(int len); + int echo_can_monitor_can_update(const int16_t *coeffs, int len); + int echo_can_monitor_line_model_update(const int32_t *coeffs, int len); + int echo_can_monitor_line_spectrum_update(const int16_t amp[], int len); + void echo_can_monitor_wait_to_end(void); + void echo_can_monitor_update_display(void); + +#ifdef __cplusplus +} +#endif + +#endif +/*- End of file ------------------------------------------------------------*/