Method play

examples/src/Examples.hpp:1545–1596

struct ex_poly_blep : public labsound_example
{
    virtual void play(int argc, char** argv) override final
    {
        const auto defaultAudioDeviceConfigurations = GetDefaultAudioDeviceConfiguration();
        context = lab::MakeRealtimeAudioContext(defaultAudioDeviceConfigurations.second, defaultAudioDeviceConfigurations.first);
        lab::AudioContext& ac = *context.get();

        std::shared_ptr<PolyBLEPNode> polyBlep = std::make_shared<PolyBLEPNode>(ac);
        std::shared_ptr<GainNode> gain = std::make_shared<GainNode>(ac);

        gain->gain()->setValue(1.0f);
        context->connect(gain, polyBlep, 0, 0);
        context->connect(context->device(), gain, 0, 0);

        polyBlep->frequency()->setValue(220.f);
        polyBlep->setType(PolyBLEPType::TRIANGLE);
        polyBlep->start(0.0f);

        std::vector<PolyBLEPType> blepWaveforms = 
        {
            PolyBLEPType::TRIANGLE,
            PolyBLEPType::SQUARE,
            PolyBLEPType::RECTANGLE,
            PolyBLEPType::SAWTOOTH,
            PolyBLEPType::RAMP,
            PolyBLEPType::MODIFIED_TRIANGLE,
            PolyBLEPType::MODIFIED_SQUARE,
            PolyBLEPType::HALF_WAVE_RECTIFIED_SINE,
            PolyBLEPType::FULL_WAVE_RECTIFIED_SINE,
            PolyBLEPType::TRIANGULAR_PULSE,
            PolyBLEPType::TRAPEZOID_FIXED,
            PolyBLEPType::TRAPEZOID_VARIABLE
        };

        _nodes.push_back(polyBlep);
        _nodes.push_back(gain);

        double now_in_ms = 0;
        int waveformIndex = 0;
        while (true)
        {
            const uint32_t delay_time_ms = 500;
            now_in_ms += delay_time_ms;

            auto waveform = blepWaveforms[waveformIndex % blepWaveforms.size()];
            polyBlep->setType(waveform);

            Wait(delay_time_ms);

            waveformIndex++;
            if (now_in_ms >= 10000) break;
        }
    }
};