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/*
* Copyright (c) 2001-2004 MUSIC TECHNOLOGY GROUP (MTG)
* UNIVERSITAT POMPEU FABRA
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
/**
* The goals of this example is to show you how to:
* -> Create a CLAM Processing with Ports and Controls
* -> Connect them to pass control messages and data to process
* -> Illustrate how to use Do() instead of the version with parameters.
*/
#include <iostream>
#include "Err.hxx"
#include "SimpleOscillator.hxx"
#include "MonoAudioFileWriter.hxx"
#include "AudioFile.hxx"
#include "AudioManager.hxx"
#include "AudioOut.hxx"
#include "FFT.hxx"
#include "IFFT.hxx"
int main( int argc, char** argv )
{
try
{
// we won't comment the code related to audio I/O and processing
// configuration, because they are questions discussed
// in another examples (like FilePlayback_example.cxx
// and ProcessingLifeCycle_example.cxx).
int sampleRate = 44100;
int size = 256;
CLAM::AudioManager manager(sampleRate, size);
manager.Start();
// In this example, we will produce a sine signal with an oscillator,
// convert it into frequency domain spectrum with an FFT (Fast Fourier
// Transform), way back to audio with an IFFT (Inverse FFT), then
// the output is both sent to the speakers and an ouput file.
CLAM::SimpleOscillator osc;
CLAM::FFTConfig fconfig;
fconfig.SetAudioSize(size);
CLAM::FFT myfft( fconfig );
CLAM::IFFTConfig ifconfig;
ifconfig.SetAudioSize(size);
CLAM::IFFT myifft( ifconfig );
CLAM::MonoAudioFileWriterConfig configWriter;
configWriter.SetTargetFile( "test.wav" );
CLAM::MonoAudioFileWriter writer( configWriter );
CLAM::AudioOut audioOut;
// If we configure audio ports the same size than the FFT
// then all the processings can be run at the same rate
// and there is no need of a complex flow control.
osc.GetOutPort("Audio Output").SetSize( size );
osc.GetOutPort("Audio Output").SetHop( size );
audioOut.GetInPort("Audio Input").SetSize( size );
audioOut.GetInPort("Audio Input").SetHop( size );
writer.GetInPort("Samples Write").SetSize( size );
writer.GetInPort("Samples Write").SetHop( size );
// Connecting the ports of each processing
CLAM::ConnectPorts( osc, "Audio Output", myfft, "Audio Input");
CLAM::ConnectPorts( myfft, "Spectrum Output", myifft, "Spectrum Input");
CLAM::ConnectPorts( myifft, "Audio Output", audioOut, "Audio Input");
CLAM::ConnectPorts( myifft, "Audio Output", writer, "Samples Write");
osc.Start();
myifft.Start();
myfft.Start();
writer.Start();
audioOut.Start();
for(int i=0;i<500;i++)
{
osc.Do();
myfft.Do();
myifft.Do();
writer.Do();
audioOut.Do();
}
osc.Stop();
myfft.Stop();
myifft.Stop();
writer.Stop();
audioOut.Stop();
std::cout << "ok, now I know how to use CLAM ports!" << std::endl;
}
catch ( CLAM::Err& e )
{
e.Print();
exit(-1);
}
catch( std::exception& e )
{
std::cerr << e.what() << std::endl;
exit(-1);
}
return 0;
}
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