Mercurial > hg > audiostuff
comparison spandsp-0.0.3/spandsp-0.0.3/tests/modem_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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| 4:26cd8f1ef0b1 | 5:f762bf195c4b |
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| 1 /* | |
| 2 * SpanDSP - a series of DSP components for telephony | |
| 3 * | |
| 4 * constel.h - Display QAM constellations, 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: modem_monitor.h,v 1.9 2006/10/24 13:45:29 steveu Exp $ | |
| 26 */ | |
| 27 | |
| 28 /*! \page constel_page Modem performance monitoring | |
| 29 \section constel_page_sec_1 What does it do? | |
| 30 This code controls a GUI window, which provides monitoring of the internal status | |
| 31 of a modem. It shows, graphically: | |
| 32 | |
| 33 - the constellation, for PSK, QAM and other similar modulations. | |
| 34 - the equalizer status, for modems with adaptive equalizers. | |
| 35 - the carrier frequency. | |
| 36 - the symbol timing correction. | |
| 37 | |
| 38 \section constel_page_sec_2 How does it work? | |
| 39 This code uses the FLTK cross platform GUI toolkit. It works on X11 and Windows platforms. | |
| 40 In addition to the basic FLTK toolkit, fltk_cartesian is also required. | |
| 41 */ | |
| 42 | |
| 43 #if !defined(_MODEM_MONITOR_H_) | |
| 44 #define _MODEM_MONITOR_H_ | |
| 45 | |
| 46 struct qam_monitor_s; | |
| 47 | |
| 48 typedef struct qam_monitor_s qam_monitor_t; | |
| 49 | |
| 50 #ifdef __cplusplus | |
| 51 extern "C" { | |
| 52 #endif | |
| 53 | |
| 54 qam_monitor_t *qam_monitor_init(float constel_width, const char *tag); | |
| 55 int qam_monitor_update_constel(qam_monitor_t *s, const complexf_t *pt); | |
| 56 int qam_monitor_update_equalizer(qam_monitor_t *s, const complexf_t *coeffs, int len); | |
| 57 int qam_monitor_update_symbol_tracking(qam_monitor_t *s, float total_correction); | |
| 58 int qam_monitor_update_carrier_tracking(qam_monitor_t *s, float carrier); | |
| 59 int qam_monitor_update_audio_level(qam_monitor_t *s, const int16_t amp[], int len); | |
| 60 void qam_wait_to_end(qam_monitor_t *s); | |
| 61 | |
| 62 #ifdef __cplusplus | |
| 63 } | |
| 64 #endif | |
| 65 | |
| 66 #endif | |
| 67 /*- End of file ------------------------------------------------------------*/ |