// 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>

#include "LoggerService.hpp"


#if defined(_WIN32)
    #define AUDIO_API RtAudio::WINDOWS_WASAPI
#else
    #define AUDIO_API RtAudio::LINUX_ALSA
#endif

class AudioEngine {

public:

    AudioEngine(LoggerService* logger);
    ~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;

    LoggerService* logger_;

};