audio_output_tick()

MAYAFLUX_API std::shared_ptr< Vruta::BroadcastSource< bool > > MayaFlux::Kriya::audio_output_tick

(

)

Create a BroadcastSource<bool> ticking once per audio output cycle.

Registers an observer with AudioBackendService and returns the source. The returned observer id is stored inside the source's shared state via a custom deleter on the shared_ptr - unregistration is automatic when the last owner drops the source.

auto src = Kriya::audio_output_tick();
get_event_manager()->add_event(std::make_shared<Vruta::Event>(
    Kriya::on_signal(src, [ct](bool) {
        ct->process_default();
    })));

Definition at line 10 of file BroadcastEvents.cpp.

{
    auto* svc = Registry::BackendRegistry::instance()
                    .get_service<Registry::Service::AudioBackendService>();
 
    if (!svc)
        return nullptr;
 
    struct State {
        Vruta::BroadcastSource<bool> source;
        Registry::Service::AudioBackendService* svc { nullptr };
        uint32_t observer_id { 0 };
        ~State()
        {
            if (svc)
                svc->unregister_output_observer(observer_id);
        }
    };
 
    auto state = std::make_shared<State>();
    state->svc = svc;
    state->observer_id = svc->register_output_observer(
        [s = state.get()](const double*, uint32_t) {
            s->source.signal(true);
        });
 
    return { state, &state->source };
}

References MayaFlux::Registry::BackendRegistry::get_service(), MayaFlux::Registry::BackendRegistry::instance(), and MayaFlux::Registry::Service::AudioBackendService::unregister_output_observer.

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