Method play

examples/src/Examples.hpp:728–773

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

        std::shared_ptr<AudioBus> audioClip = MakeBusFromSampleFile("samples/trainrolling.wav", argc, argv);
        std::shared_ptr<SampledAudioNode> audioClipNode = std::make_shared<SampledAudioNode>(ac);
        auto stereoPanner = std::make_shared<StereoPannerNode>(ac);

        {
            ContextRenderLock r(context.get(), "ex_stereo_panning");

            audioClipNode->setBus(r, audioClip);
            context->connect(stereoPanner, audioClipNode, 0, 0);
            audioClipNode->schedule(0.0, -1); // -1 to loop forever

            context->connect(context->device(), stereoPanner, 0, 0);
        }

        if (audioClipNode)
        {
            _nodes.push_back(audioClipNode);
            _nodes.push_back(stereoPanner);

            const int seconds = 8;

            std::thread controlThreadTest([this, &stereoPanner, seconds]() {
                float halfTime = seconds * 0.5f;
                for (float i = 0; i < seconds; i += 0.01f)
                {
                    float x = (i - halfTime) / halfTime;
                    stereoPanner->pan()->setValue(x);
                    Wait(10);
                }
            });

            Wait(seconds * 1000);

            controlThreadTest.join();
        }
        else
        {
            std::cerr << "Couldn't initialize train node to play" << std::endl;
        }
    }
};

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