00001 /* 00002 * Copyright: (C) 1999-2001 Bruce W. Forsberg 00003 * 00004 * This library is free software; you can redistribute it and/or 00005 * modify it under the terms of the GNU Lesser General Public 00006 * License as published by the Free Software Foundation; either 00007 * version 2.1 of the License, or any later version. 00008 * 00009 * This library is distributed in the hope that it will be useful, 00010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00012 * Lesser General Public License for more details. 00013 * 00014 * You should have received a copy of the GNU Lesser General Public 00015 * License along with this library; if not, write to the Free Software 00016 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00017 * 00018 * Bruce Forsberg forsberg@tns.net 00019 * 00020 */ 00021 00022 00023 #ifndef _AFLIBAUDIOCONSTANTSRC_H_ 00024 #define _AFLIBAUDIOCONSTANTSRC_H_ 00025 00026 #ifdef HAVE_CONFIG_H 00027 #include <config.h> 00028 #endif 00029 00030 #include "aflibAudio.h" 00031 00032 00048 class aflibAudioConstantSrc: public aflibAudio { 00049 00050 public: 00051 00052 enum waveform_type 00053 { 00054 WAVEFORM_DCLEVEL, 00055 WAVEFORM_TRIANGLE, 00056 WAVEFORM_SQUAREWAVE, 00057 WAVEFORM_SINEWAVE 00058 }; 00059 00060 // Available contructors and destructors 00061 aflibAudioConstantSrc(aflibAudio& audio); 00062 aflibAudioConstantSrc(); 00063 00064 ~aflibAudioConstantSrc(); 00065 00066 void 00067 setWaveformType( 00068 aflibAudioConstantSrc::waveform_type wave, 00069 double max_amp, 00070 double min_amp, 00071 int frequency); 00072 00073 aflibStatus 00074 compute_segment( 00075 list<aflibData *>& data, 00076 long long position = -1) ; 00077 00079 const char * 00080 getName() const { return "aflibAudioConstantSrc";}; 00081 00082 private: 00083 00084 00085 aflibAudioConstantSrc(const aflibAudioConstantSrc& op); 00086 00087 const aflibAudioConstantSrc& 00088 operator=(const aflibAudioConstantSrc& op); 00089 00090 waveform_type _wave; 00091 double _amp_max; 00092 double _amp_min; 00093 int _freq; 00094 00095 }; 00096 00097 00098 #endif