Method play

examples/src/Examples.hpp:505–558

struct ex_runtime_graph_update : public labsound_example
{
    virtual void play(int argc, char ** argv) override
    {
        std::shared_ptr<OscillatorNode> oscillator1, oscillator2;
        std::shared_ptr<GainNode> gain;

        {
            const auto defaultAudioDeviceConfigurations = GetDefaultAudioDeviceConfiguration();
            context = lab::MakeRealtimeAudioContext(defaultAudioDeviceConfigurations.second, defaultAudioDeviceConfigurations.first);
            lab::AudioContext& ac = *context.get();

            {
                oscillator1 = std::make_shared<OscillatorNode>(ac);
                oscillator2 = std::make_shared<OscillatorNode>(ac);

                gain = std::make_shared<GainNode>(ac);
                gain->gain()->setValue(0.50);

                // osc -> gain -> destination
                context->connect(gain, oscillator1, 0, 0);
                context->connect(gain, oscillator2, 0, 0);
                context->connect(context->device(), gain, 0, 0);

                oscillator1->setType(OscillatorType::SINE);
                oscillator1->frequency()->setValue(220.f);
                oscillator1->start(0.00f);

                oscillator2->setType(OscillatorType::SINE);
                oscillator2->frequency()->setValue(440.f);
                oscillator2->start(0.00);
            }

            _nodes.push_back(oscillator1);
            _nodes.push_back(oscillator2);
            _nodes.push_back(gain);

            for (int i = 0; i < 4; ++i)
            {
                context->disconnect(nullptr, oscillator1, 0, 0);
                context->connect(gain, oscillator2, 0, 0);
                Wait(200);

                context->disconnect(nullptr, oscillator2, 0, 0);
                context->connect(gain, oscillator1, 0, 0);
                Wait(200);
            }

            context->disconnect(nullptr, oscillator1, 0, 0);
            context->disconnect(nullptr, oscillator2, 0, 0);
        }

        std::cout << "OscillatorNode 1 use_count: " << oscillator1.use_count() << std::endl;
        std::cout << "OscillatorNode 2 use_count: " << oscillator2.use_count() << std::endl;
        std::cout << "GainNode use_count:         " << gain.use_count() << std::endl;
    }
};

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