rtaudio hello world

src/synth/AudioEngine.hpp

@@ -1,2 +1,39 @@
 
 // The audio engine handles the RtAudio implementation of outputing samples to audio. the audio callback fills a buffer of audio samples and submits it for playback
+
+#pragma once
+
+#include <RtAudio.h>
+
+#if defined(_WIN32)
+    #define AUDIO_API RtAudio::WINDOWS_WASAPI
+#else
+    #define AUDIO_API RtAudio::LINUX_ALSA
+#endif
+
+class AudioEngine {
+
+public:
+
+    AudioEngine();
+    ~AudioEngine();
+
+    bool start();
+    bool stop();
+
+private:
+
+    static int32_t audioCallback(void* outputBuffer, void* inputBuffer, uint32_t nFrames, double streamtime, RtAudioStreamStatus status, void* userData);
+
+    int32_t process(float* out, size_t nFrames);
+
+    RtAudio audioDevice_ { AUDIO_API };
+
+    // TODO: make these configurable
+    uint32_t sampleRate_ = 44100;
+    uint32_t bufferFrames_ = 512;
+    uint32_t channels_ = 2;
+
+    float phase_ = 0.0f;
+
+};