FreqPlayer: note player ; begin implementation

This commit is contained in:
Louis-Joseph Fournier 2016-01-10 12:10:52 +01:00
parent 095ace53e0
commit 16a8f49ff9
2 changed files with 124 additions and 0 deletions

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src/audio/FreqPlayer.cpp Normal file
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/* Copyright 2016 (C) Louis-Joseph Fournier
* louisjoseph.fournier@gmail.com
*
* This file is part of SailTuner.
*
* SailTuner 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 3 of the License, or
* (at your option) any later version.
*
* SailTuner 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.
*
*/
#include <math.h>
#include <stdint.h>
#include "FreqPlayer.hpp"
template typename<sample_t> FreqPlayer<sample_t>::FreqPlayer(int _rate):
rate(_rate),
freq(440),
volume(0.2),
n_frame(0),
waveform(W_SINUS)
{
}
template typename<sample_t> void FreqPlayer<sample_t>::Reset()
{
n_frame = 0;
}
template typename<sample_s> void FreqPlayer<sample_t>::SetFreq(double freq)
{
this->freq = freq;
}
template typename<sample_s> void FreqPlayer<sample_t>::SetVolume(double volume)
{
this->volume = volume;
}
int16_t FreqPlayer<int16_t>::max() { return INT16_MAX; }
double FreqPlayer<double>::max() { return 1; }
template typename<sample_t> double FreqPlayer<sample_t>::radius()
{
return (double) (n_sample++) * freq / rate * M_PI * 2;
}
template typename<sample_t> sample_t FreqPlayer<sample_t>::AudioFrame()
{
// return (n_sample++)
}
// instanciation for int16
template class LinearFilter<int16_t>;

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src/audio/FreqPlayer.hpp Normal file
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/* Copyright 2016 (C) Louis-Joseph Fournier
* louisjoseph.fournier@gmail.com
*
* This file is part of SailTuner.
*
* SailTuner 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 3 of the License, or
* (at your option) any later version.
*
* SailTuner 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.
*
*/
#ifndef _FREQ_PLAYER_HPP
#define _FREQ_PLAYER_HPP
/**
* FreqPlayer
*
* Play a note at given frequency
* Waveform style can be: sinus
*/
template<typename sample_t> class FreqPlayer {
public:
/// waveform style
enum WAVEFORM { W_SINUS };
private:
/// current frequency
double freq;
/// current volume (linear)
double volume;
/// audio rate
int rate;
/// current frame nb
int n_frame;
/// wave form
WAVEFORM waveform;
/// return the max sample_t
sample_t max();
/// return the current radius
double radius();
public:
FreqPlayer(int rate);
~FreqPlayer() {}
/// reset current sound
void Reset();
/// get next audio frame
sample_t AudioFrame();
/// set current frequency
void SetFreq(double freq);
/// set current volume
void SetVolume(double volume);
};
#endif