heck_libdizzy/examples/main_testtone.cc

#include "types.hh"

namespace Heck {
    namespace Constants {
    }

    ld::DaisySeed hw{};
    dsp::Oscillator osc{};

    void AudioCallback(
        ld::AudioHandle::InterleavingInputBuffer in,
        ld::AudioHandle::InterleavingOutputBuffer out,
        size_t size)
    {
        float osc_out;
        osc.SetFreq(1000);

        for (size_t i = 0; i < size; i += 2) {
            osc.SetAmp(1.0);
            osc_out = osc.Process();
            osc_out *= 0.005;
            out[i] = osc_out;
            out[i + 1] = osc_out;
        }
    }

    void init()
    {
        hw.Configure();
        hw.Init();
        hw.SetAudioBlockSize(4);
        float samplerate = hw.AudioSampleRate();

        osc.Init(samplerate);
        osc.SetWaveform(osc.WAVE_SIN);
        osc.SetAmp(1.f);
        osc.SetFreq(1000);

        hw.StartAudio(AudioCallback);
    }

    void mainloop()
    {
        for (;;) {}
    }
} // namespace Heck


int main(void)
{
    Heck::init();
    Heck::mainloop();
    return 0;
}