public static bool Startup(MediaContext mc) { // // Note to stress triagers: // // This call will fail if PresentationCore.dll and milcore.dll have mismatched // versions -- please make sure that both binaries have been properly built // and deployed. // // *** Failure here does NOT indicate a bug in MediaContext.Startup! *** // HRESULT.Check(UnsafeNativeMethods.MilVersionCheck(MS.Internal.Composition.Version.MilSdkVersion)); using (CompositionEngineLock.Acquire()) { _mediaContexts.Add(mc); //Is this the first startup? if (0 == s_refCount) { HRESULT.Check(SafeNativeMethods.MilCompositionEngine_InitializePartitionManager( 0 // THREAD_PRIORITY_NORMAL )); s_forceSoftareForGraphicsStreamMagnifier = UnsafeNativeMethods.WgxConnection_ShouldForceSoftwareForGraphicsStreamClient(); ConnectTransport(); // Read a flag from the registry to determine whether we should run // animation smoothing code. ReadAnimationSmoothingSetting(); } s_refCount++; } // Consider making MediaSystem.ConnectTransport return the state of transport connectedness so // that we can initialize the media system to a disconnected state. return(true); }
internal static void Shutdown(MediaContext mc) { using (CompositionEngineLock.Acquire()) { Debug.Assert(s_refCount > 0); _mediaContexts.Remove(mc); s_refCount--; if (0 == s_refCount) { // We can shut-down. // Debug.WriteLine("MediSystem::NotifyDisconnect Stop Transport\n"); if (IsTransportConnected) { DisconnectTransport(); } HRESULT.Check(SafeNativeMethods.MilCompositionEngine_DeinitializePartitionManager()); } } }