Marsyas
0.6.0-alpha
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00001 /* 00002 ** Copyright (C) 1998-2007 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 00020 #include "Panorama.h" 00021 00022 using std::ostringstream; 00023 using namespace Marsyas; 00024 00025 Panorama::Panorama(mrs_string name):MarSystem("Panorama", name) 00026 { 00027 addControls(); 00028 } 00029 00030 Panorama::Panorama(const Panorama& a) : MarSystem(a) 00031 { 00032 ctrl_angle_ = getctrl("mrs_real/angle"); 00033 } 00034 00035 Panorama::~Panorama() 00036 { 00037 } 00038 00039 MarSystem* 00040 Panorama::clone() const 00041 { 00042 return new Panorama(*this); 00043 } 00044 00045 void 00046 Panorama::addControls() 00047 { 00048 addctrl("mrs_real/angle", PI/4, ctrl_angle_); 00049 } 00050 00051 void 00052 Panorama::myUpdate(MarControlPtr sender) 00053 { 00054 (void) sender; //suppress warning of unused parameter(s) 00055 setctrl("mrs_natural/onSamples", getctrl("mrs_natural/onSamples")); 00056 00057 mrs_natural inObservations = getctrl("mrs_natural/inObservations")->to<mrs_natural>(); 00058 00059 if (inObservations == 1) 00060 { 00061 setctrl("mrs_natural/onObservations", 2); 00062 mrs_string inObsNames = getctrl("mrs_string/inObsNames")->to<mrs_string>(); 00063 inObsNames += ","; 00064 inObsNames += inObsNames; 00065 setctrl("mrs_string/onObsNames", inObsNames); 00066 } 00067 else 00068 { 00069 setctrl("mrs_natural/onObservations", inObservations); 00070 setctrl("mrs_string/onObsNames", getctrl("mrs_string/inObsNames")); 00071 } 00072 setctrl("mrs_real/osrate", getctrl("mrs_real/israte")); 00073 } 00074 00075 00076 void 00077 Panorama::myProcess(realvec& in, realvec& out) 00078 { 00079 mrs_natural t,o; 00080 mrs_real angle = ctrl_angle_->to<mrs_real>(); 00081 mrs_real gl = cos(angle) - sin(angle); 00082 mrs_real gr = sin(angle) + cos(angle); 00083 00084 if (inObservations_ == 1) // mono2stereo 00085 { 00086 for (t = 0; t < inSamples_; t++) 00087 { 00088 out(0,t) = gl * in(0,t); // left 00089 out(1,t) = gr * in(0,t); // right 00090 } 00091 } 00092 00093 else // pass through 00094 { 00095 for (o=0; o < onObservations_; o++) 00096 for (t = 0; t < inSamples_; t++) 00097 { 00098 out(o,t) = in(0,t); 00099 } 00100 } 00101 00102 00103 } 00104 00105 00106 00107 00108 00109 00110 00111