FreqPlayer: note player ; begin implementation

src/audio/FreqPlayer.cpp

@@ -0,0 +1,61 @@
+/* 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>;

src/audio/FreqPlayer.hpp

@@ -0,0 +1,63 @@
+/* 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