Marsyas
0.6.0-alpha
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00001 /* 00002 ** Copyright (C) 1998-2006 George Tzanetakis <gtzan@cs.uvic.ca> 00003 ** 00004 ** This program is free software; you can redistribute it and/or modify 00005 ** it under the terms of the GNU General Public License as published by 00006 ** the Free Software Foundation; either version 2 of the License, or 00007 ** (at your option) any later version. 00008 ** 00009 ** This program 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 00012 ** GNU General Public License for more details. 00013 ** 00014 ** You should have received a copy of the GNU General Public License 00015 ** along with this program; if not, write to the Free Software 00016 ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 00017 */ 00018 00019 #include "PWMSource.h" 00020 00021 using namespace std; 00022 using namespace Marsyas; 00023 00024 PWMSource::PWMSource(mrs_string name):MarSystem("PWMSource",name) 00025 { 00026 //type_ = "PWMSource"; 00027 //name_ = name; 00028 00029 addControls(); 00030 00031 00032 } 00033 00034 PWMSource::~PWMSource() 00035 { 00036 } 00037 00038 MarSystem* 00039 PWMSource::clone() const 00040 { 00041 return new PWMSource(*this); 00042 } 00043 00044 void 00045 PWMSource::addControls() 00046 { 00047 addctrl("mrs_real/frequency", 440.0); 00048 addctrl("mrs_real/duty_cicle", 0.5); 00049 } 00050 00051 void 00052 PWMSource::myUpdate(MarControlPtr sender) 00053 { 00054 00055 // setctrl("mrs_natural/onSamples", getctrl("mrs_natural/inSamples")); 00056 // setctrl("mrs_natural/onObservations", getctrl("mrs_natural/inObservations")); 00057 // setctrl("mrs_real/osrate", getctrl("mrs_real/israte")); 00058 MarSystem::myUpdate(sender); 00059 } 00060 00061 void 00062 PWMSource::myProcess(realvec &in, realvec &out) 00063 { 00064 (void) in; 00065 00066 mrs_real frequency = (getctrl("mrs_real/frequency")->to<mrs_real>()); 00067 mrs_real duty = getctrl("mrs_real/duty_cicle")->to<mrs_real>(); 00068 mrs_real irate = (getctrl("mrs_real/israte")->to<mrs_real>()); 00069 mrs_real incr = frequency / irate; 00070 mrs_natural inSamples = getctrl("mrs_natural/inSamples")->to<mrs_natural>(); 00071 00072 // cout << "f=" << frequency; 00073 // cout << "d=" << duty; 00074 // cout << "irate=" << irate; 00075 // cout << "deltaphase=" << incr; 00076 // cout << "insamples=" << inSamples; 00077 00078 00079 for (mrs_natural t=0; t < inSamples; t++) 00080 { 00081 out(0,t)=0; 00082 phase += incr; 00083 if (phase>duty) { 00084 out(0,t) = 0; 00085 } else { 00086 out(0,t) = 1; 00087 } 00088 if (phase>1) { 00089 phase=0; 00090 } 00091 } 00092 } 00093 00094 00095 00096 //00053 void 00097 //00054 NoiseSource::myProcess(realvec &in, realvec &out) 00098 //00055 { 00099 //00056 for (mrs_natural t=0; t < inSamples_; t++) 00100 //00057 out(t) = (mrs_real)(2.0 * rand() / (RAND_MAX + 1.0) )-1; 00101 //00058 } 00102 //00059 00103 //00060 00104 //00061