Added DJ audio track player

synthisizer.h

@@ -0,0 +1,19 @@
+#pragma once
+
+#include "audioformat.h"
+
+namespace midi { class MidiMessage; }
+
+class Synthisizer
+{
+public:
+    void setFrequency(int16_t frequency) { m_frequency = frequency; }
+
+    void writeSamples(frame_t *begin, frame_t *end);
+
+    void messageReceived(const midi::MidiMessage &message);
+
+private:
+    int16_t m_frequency{};
+    double m_phase{};
+};