setup_io_service() [2/2]

void MayaFlux::IO::VideoFileReader::setup_io_service

(

uint64_t

reader_id = 0

)

Internal setup for IOService integration.

Called by load_into_container() if no IOService is registered yet. Can also be called manually to pre-register before load_into_container().

In standalone mode, the reader generates its own reader_id and registers an IOService lambda that calls signal_decode() when a decode request is dispatched with the matching reader_id.

When IOManager is present, it assigns a globally unique reader_id and calls the second overload of setup_io_service() with the shared IOService instance it manages. The reader then registers a lambda that calls signal_decode() when a decode request is dispatched with the matching id.

Definition at line 25 of file VideoFileReader.cpp.

{
    m_reader_id = reader_id;
 
    if (!Registry::BackendRegistry::instance()
            .get_service<Registry::Service::IOService>()) {
 
        m_io_service = std::make_shared<Registry::Service::IOService>();
        m_io_service->request_decode = [this](uint64_t reader_id) {
            if (reader_id == m_reader_id)
                signal_decode();
        };
 
        Registry::BackendRegistry::instance()
            .register_service<Registry::Service::IOService>(
                [this]() -> void* { return m_io_service.get(); });
 
        m_owns_io_service = true;
    }
}

References MayaFlux::Registry::BackendRegistry::instance(), m_io_service, m_owns_io_service, m_reader_id, MayaFlux::Registry::BackendRegistry::register_service(), and signal_decode().

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