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/*!
* \file
* \brief Deterministic sources - header file
* \author Tobias Ringstrom and Tony Ottosson
*
* -------------------------------------------------------------------------
*
* IT++ - C++ library of mathematical, signal processing, speech processing,
* and communications classes and functions
*
* Copyright (C) 1995-2008 (see AUTHORS file for a list of contributors)
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* -------------------------------------------------------------------------
*/
#ifndef SOURCE_H
#define SOURCE_H
#include <itpp/base/vec.h>
namespace itpp {
//! \addtogroup detsource
/*!
\brief Sine-wave source
\ingroup detsource
*/
class Sine_Source {
public:
//! Constructor. Set frequency, mean, amplitude, and start phase
Sine_Source(double freq, double mean=0.0, double ampl=1.0, double inphase=0.0);
//! Return a single sample
double operator()() { return sample(); }
//! Get a sample vector.
vec operator()(int n);
//! Get a sample matrix.
mat operator()(int h, int w);
protected:
private:
double sample();
double m, A, theta, dtheta;
};
/*!
\brief Square-wave source
\ingroup detsource
*/
class Square_Source {
public:
//! Constructor. Set frequency, mean, amplitude, and start phase
Square_Source(double freq, double mean=0.0, double ampl=1.0, double inphase=0.0);
//! Return a single sample
double operator()() { return sample(); }
//! Get a sample vector.
vec operator()(int n);
//! Get a sample matrix.
mat operator()(int h, int w);
protected:
private:
double sample();
double m, A, theta, dtheta;
};
/*!
\brief Triangle-wave source
\ingroup detsource
*/
class Triangle_Source {
public:
//! Constructor. Set frequency, mean, amplitude and start phase
Triangle_Source(double freq, double mean=0.0, double ampl=1.0, double inphase=0.0);
//! Return a single sample
double operator()() { return sample(); }
//! Get a sample vector.
vec operator()(int n);
//! Get a sample matrix.
mat operator()(int h, int w);
protected:
private:
double sample();
double m, A, theta, dtheta;
};
/*!
\brief Sawtooth-wave source
\ingroup detsource
*/
class Sawtooth_Source {
public:
//! Constructor. Set frequency, mean, amplitude, and start phase
Sawtooth_Source(double freq, double mean=0.0, double ampl=1.0, double inphase=0.0);
//! Return a single sample
double operator()() { return sample(); }
//! Get a sample vector.
vec operator()(int n);
//! Get a sample matrix.
mat operator()(int h, int w);
protected:
private:
double sample();
double m, A, theta, dtheta;
};
/*!
\brief Impulse source
\ingroup detsource
*/
class Impulse_Source {
public:
//! Constructor. Set frequency, amplitude and start phase
Impulse_Source(double freq, double ampl=1.0, double inphase=0.0);
//! Return a single sample
double operator()() { return sample(); }
//! Get a sample vector.
vec operator()(int n);
//! Get a sample matrix.
mat operator()(int h, int w);
protected:
private:
double sample();
double A, pos, dtheta;
};
/*!
\brief Pattern source
\ingroup detsource
*/
class Pattern_Source {
public:
//! Constructor. Set pattern and start position
Pattern_Source(const vec &pattern, int start_pos=0);
//! Destructor
virtual ~Pattern_Source() { }
//! Return a single sample
double operator()() { return sample(); }
//! Get a sample vector.
vec operator()(int n);
//! Get a sample matrix.
mat operator()(int h, int w);
protected:
private:
double sample();
int pos;
vec pat;
double mean, var;
};
} //namespace itpp
#endif // #ifndef SOURCE_H
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