Method handleReadOpenParameters

src/IECoreImage/DisplayDriverServer.cpp:439–527

}

void DisplayDriverServer::Session::handleReadOpenParameters( const boost::system::error_code& error )
{
	if (error)
	{
		msg( Msg::Error, "DisplayDriverServer::Session::handleReadOpenParameters", error.message().c_str() );
		m_socket.close();
		return;
	}

	StringDataPtr displayDriverType;
	Box2iDataPtr displayWindow, dataWindow;
	StringVectorDataPtr channelNames;
	CompoundDataPtr parameters;
	bool scanLineOrder = false;
	bool acceptsRepeatedData = false;

	// handle imageOpen parameters.
	try
	{
		MemoryIndexedIOPtr io = new MemoryIndexedIO( m_buffer, IndexedIO::rootPath, IndexedIO::Exclusive | IndexedIO::Read );
		displayWindow = boost::static_pointer_cast<Box2iData>( Object::load( io, "displayWindow" ) );
		dataWindow = boost::static_pointer_cast<Box2iData>( Object::load( io, "dataWindow" ) );
		channelNames = boost::static_pointer_cast<StringVectorData>( Object::load( io, "channelNames" ) );
		parameters = boost::static_pointer_cast<CompoundData>( Object::load( io, "parameters" ) );

		const StringData *displayType = parameters->member<StringData>( "remoteDisplayType", true /* throw if missing */ );

		// create a displayDriver using the factory function.
		if ( !parameters->member<IntData>( "displayDriverServer:mergeId", false ) )
		{
			m_displayDriver = DisplayDriver::create( displayType->readable(), displayWindow->readable(), dataWindow->readable(), channelNames->readable(), parameters );
		}
		else
		{
			m_mergeId = parameters->member<IntData>( "displayDriverServer:mergeId", false /* throw if missing */ )->readable();

			// Check if merge ID in map, if not then create display driver and session count pair with merge ID.
			auto &m = m_mergeMap[m_mergeId.value()];
			if ( !m.mergeDriver )
			{
				const IntData *sessionClientsData = parameters->member<IntData>( "displayDriverServer:mergeClients", true /* throw if missing */ );
				m.mergeDriver= DisplayDriver::create(
						displayType->readable(),
						displayWindow->readable(),
						displayWindow->readable(), // For merge we want dataWindow = displayWindow
						channelNames->readable(),
						parameters
						);
				m.mergeCount = sessionClientsData->readable();
			}
			// Merge ID is now in map, so load the display driver.
			m_displayDriver = m.mergeDriver;
		}
		scanLineOrder = m_displayDriver->scanLineOrderOnly();
		acceptsRepeatedData = m_displayDriver->acceptsRepeatedData();
	}
	catch( std::exception &e )
	{