using MessageId.SmartClient.PlaybackCommand

MIP
, ,
1

Hey

I create a plugin base on the SDK Plugin example 'Smart Client View and Window Tool’ - ‘Playback Control’

In the while loop on file BackgroundPlugin.cs I add the a function that send the playback control massage -

           _EnvironmentManager.Instance.SendMessage(_

           _new VideoOS.Platform.Messaging.Message(_

               _MessageId.SmartClient.PlaybackCommand,_

               _new PlaybackCommandData()_

               _{_

                   _Command = command,_

                   _DateTime = dateTime,_

                   _Speed = speed_

               _}));_

I succeed to change from PlayForward to PlayReverse and etc.

But when I try to change the speed (for example from PlayForward x2 to PlayForward x5) I got exception

Way it’s happened ?

Thank you

This is the exception info:

************** Inner Exception **************

Exception type:System.InvalidOperationException

Exception message:The calling thread cannot access this object because a different thread owns it.

Exception source:WindowsBase

Exception Target Site: VerifyAccess

at System.Windows.Threading.Dispatcher.VerifyAccess()

at System.Windows.DependencyObject.GetValue(DependencyProperty dp)

at System.Windows.Controls.Primitives.ToggleButton.get_IsChecked()

at VideoOS.UI.Common.WPF.Timeline.Control.ControlsArea.Controls.PlaybackSpeedControl.set_PlaybackSpeed(PlaybackSpeed value)

at VideoOS.UI.Common.WPF.Timeline.Control.ControlsArea.ControlsArea.ApplyAppearanceAndBehaviourControllerProperty(String propertyName)

at System.ComponentModel.PropertyChangedEventHandler.Invoke(Object sender, PropertyChangedEventArgs e)

at VideoOS.UI.Common.WPF.Timeline.Control.Controllers.AppearanceAndBehaviourController.OnPropertyChanged(Enum fieldName)

at VideoOS.UI.Common.WPF.Timeline.Control.Controllers.AppearanceAndBehaviourController.set_PlaybackSpeed(PlaybackSpeed value)

at VideoOS.UI.Common.WPF.Timeline.Control.TimelineControl.set_PlaybackSpeed(Double value)

at VideoOS.RemoteClient.Application.UI.Timeline.SmartClientTimelineHelper.BrowseController_PlaybackSpeedChangedEvent(Object sender, PlaybackSpeedEventArgs e)

at System.EventHandler`1.Invoke(Object sender, TEventArgs e)

at VideoOS.RemoteClient.Application.Controllers.BrowseController.FirePlaybackSpeedChangedEvent(PlaybackSpeedEventArgs e)

at VideoOS.RemoteClient.Application.Controllers.BrowseController.SetPlaybackSpeed(Double playbackSpeed, Boolean isFromLocalSource)

************** Outer Exception **************

Exception type:System.Reflection.TargetInvocationException

Exception message:Exception has been thrown by the target of an invocation.

Exception source:mscorlib

Exception Target Site: InvokeMethod

at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)

at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)

at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)

at VideoOS.RemoteClient.Application.Actions.ActionBase.InvokeAction(Object[] parameters)

at VideoOS.RemoteClient.Application.MIP.Manager.MessageManager.ClientPlaybackCommandHandler(Message message, FQID dest, FQID source)

at VideoOS.RemoteClient.Application.MIP.Manager.SCEnvironmentManager.ExecuteMessage(Message message, FQID destination, FQID sender, String logMessage)

2

My first idea is that this message must be sent while being on the UI thread. In an Smart Client plugin you can achieve this by using:

virtual void VideoOS.Platform.ClientControl.CallOnUiThread ( Action actionToBeInvoked)

ref. https://doc.developer.milestonesys.com/html/index.html?base=miphelp/class_video_o_s_1_1_platform_1_1_client_control.html&tree=tree_search.html?search=callonuithread

Let me know if my idea is correct and this solves it..

3

Hey

Thank you!!!

You right

It’s working!