FreqPlayer: note player ; begin implementation
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src/audio/FreqPlayer.cpp
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61
src/audio/FreqPlayer.cpp
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/* Copyright 2016 (C) Louis-Joseph Fournier
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* louisjoseph.fournier@gmail.com
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*
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* This file is part of SailTuner.
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*
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* SailTuner is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* SailTuner is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <math.h>
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#include <stdint.h>
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#include "FreqPlayer.hpp"
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template typename<sample_t> FreqPlayer<sample_t>::FreqPlayer(int _rate):
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rate(_rate),
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freq(440),
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volume(0.2),
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n_frame(0),
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waveform(W_SINUS)
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{
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}
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template typename<sample_t> void FreqPlayer<sample_t>::Reset()
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{
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n_frame = 0;
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}
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template typename<sample_s> void FreqPlayer<sample_t>::SetFreq(double freq)
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{
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this->freq = freq;
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}
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template typename<sample_s> void FreqPlayer<sample_t>::SetVolume(double volume)
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{
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this->volume = volume;
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}
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int16_t FreqPlayer<int16_t>::max() { return INT16_MAX; }
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double FreqPlayer<double>::max() { return 1; }
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template typename<sample_t> double FreqPlayer<sample_t>::radius()
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{
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return (double) (n_sample++) * freq / rate * M_PI * 2;
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}
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template typename<sample_t> sample_t FreqPlayer<sample_t>::AudioFrame()
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{
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// return (n_sample++)
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}
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// instanciation for int16
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template class LinearFilter<int16_t>;
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63
src/audio/FreqPlayer.hpp
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63
src/audio/FreqPlayer.hpp
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/* Copyright 2016 (C) Louis-Joseph Fournier
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* louisjoseph.fournier@gmail.com
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*
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* This file is part of SailTuner.
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*
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* SailTuner is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* SailTuner is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef _FREQ_PLAYER_HPP
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#define _FREQ_PLAYER_HPP
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/**
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* FreqPlayer
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*
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* Play a note at given frequency
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* Waveform style can be: sinus
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*/
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template<typename sample_t> class FreqPlayer {
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public:
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/// waveform style
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enum WAVEFORM { W_SINUS };
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private:
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/// current frequency
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double freq;
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/// current volume (linear)
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double volume;
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/// audio rate
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int rate;
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/// current frame nb
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int n_frame;
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/// wave form
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WAVEFORM waveform;
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/// return the max sample_t
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sample_t max();
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/// return the current radius
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double radius();
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public:
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FreqPlayer(int rate);
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~FreqPlayer() {}
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/// reset current sound
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void Reset();
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/// get next audio frame
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sample_t AudioFrame();
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/// set current frequency
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void SetFreq(double freq);
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/// set current volume
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void SetVolume(double volume);
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};
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#endif
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