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MainPage.xaml.vb
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MainPage.xaml.vb
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' The Blank Page item template is documented at http:'go.microsoft.com/fwlink/?LinkId=234238
''' <summary>
''' An empty page that can be used on its own or navigated to within a Frame.
''' </summary>
Public NotInheritable Class MainPage
Inherits Page
''' <summary>
''' Invoked when this page is about to be displayed in a Frame.
''' </summary>
''' <param name="e">Event data that describes how this page was reached. The Parameter
''' property is typically used to configure the page.</param>
Protected Overrides Sub OnNavigatedTo(e As Navigation.NavigationEventArgs)
End Sub
' <SnippetStartAndStop>
Private receiver As Windows.Media.PlayTo.PlayToReceiver
Private display As Windows.System.Display.DisplayRequest
Private seeking As Boolean = False
Private Async Sub StartReceiverButton_Click()
Try
If receiver Is Nothing Then
receiver = New Windows.Media.PlayTo.PlayToReceiver()
End If
' Add Play To Receiver events and properties
AddHandler receiver.CurrentTimeChangeRequested, AddressOf receiver_CurrentTimeChangeRequested
AddHandler receiver.MuteChangeRequested, AddressOf receiver_MuteChangeRequested
AddHandler receiver.PauseRequested, AddressOf receiver_PauseRequested
AddHandler receiver.PlaybackRateChangeRequested, AddressOf receiver_PlaybackRateChangeRequested
AddHandler receiver.PlayRequested, AddressOf receiver_PlayRequested
AddHandler receiver.SourceChangeRequested, AddressOf receiver_SourceChangeRequested
AddHandler receiver.StopRequested, AddressOf receiver_StopRequested
AddHandler receiver.TimeUpdateRequested, AddressOf receiver_TimeUpdateRequested
AddHandler receiver.VolumeChangeRequested, AddressOf receiver_VolumeChangeRequested
' <SnippetProperties>
receiver.FriendlyName = "Sample Play To Receiver"
receiver.SupportsAudio = False
receiver.SupportsVideo = True
receiver.SupportsImage = False
' </SnippetProperties>
' Add MediaElement events
AddHandler VideoPlayer.CurrentStateChanged, AddressOf VideoPlayer_CurrentStateChanged
AddHandler VideoPlayer.MediaEnded, AddressOf VideoPlayer_MediaEnded
AddHandler VideoPlayer.MediaFailed, AddressOf VideoPlayer_MediaFailed
AddHandler VideoPlayer.MediaOpened, AddressOf VideoPlayer_MediaOpened
AddHandler VideoPlayer.RateChanged, AddressOf VideoPlayer_RateChanged
AddHandler VideoPlayer.SeekCompleted, AddressOf VideoPlayer_SeekCompleted
AddHandler VideoPlayer.VolumeChanged, AddressOf VideoPlayer_VolumeChanged
' <SnippetStartAsync>
' Advertise the receiver on the local network and start receiving commands
Await receiver.StartAsync()
' Prevent the screen from locking
If display Is Nothing Then
display = New Windows.System.Display.DisplayRequest()
display.RequestActive()
StatusTextBlock.Text = "'" & receiver.FriendlyName & "' started."
End If
' </SnippetStartAsync>
Catch
receiver = Nothing
StatusTextBlock.Text = "Failed to start receiver. "
End Try
End Sub
Private Async Sub StopReceiverButton_Click()
Try
' <SnippetStopAsync>
If receiver IsNot Nothing Then
Await receiver.StopAsync()
If display IsNot Nothing Then display.RequestRelease()
' Remove Play To Receiver events
RemoveHandler receiver.CurrentTimeChangeRequested, AddressOf receiver_CurrentTimeChangeRequested
RemoveHandler receiver.MuteChangeRequested, AddressOf receiver_MuteChangeRequested
RemoveHandler receiver.PauseRequested, AddressOf receiver_PauseRequested
RemoveHandler receiver.PlaybackRateChangeRequested, AddressOf receiver_PlaybackRateChangeRequested
RemoveHandler receiver.PlayRequested, AddressOf receiver_PlayRequested
RemoveHandler receiver.SourceChangeRequested, AddressOf receiver_SourceChangeRequested
RemoveHandler receiver.StopRequested, AddressOf receiver_StopRequested
RemoveHandler receiver.TimeUpdateRequested, AddressOf receiver_TimeUpdateRequested
RemoveHandler receiver.VolumeChangeRequested, AddressOf receiver_VolumeChangeRequested
' Remove MediaElement events
VideoPlayer.Pause()
RemoveHandler VideoPlayer.CurrentStateChanged, AddressOf VideoPlayer_CurrentStateChanged
RemoveHandler VideoPlayer.MediaEnded, AddressOf VideoPlayer_MediaEnded
RemoveHandler VideoPlayer.MediaFailed, AddressOf VideoPlayer_MediaFailed
RemoveHandler VideoPlayer.MediaOpened, AddressOf VideoPlayer_MediaOpened
RemoveHandler VideoPlayer.RateChanged, AddressOf VideoPlayer_RateChanged
RemoveHandler VideoPlayer.SeekCompleted, AddressOf VideoPlayer_SeekCompleted
RemoveHandler VideoPlayer.VolumeChanged, AddressOf VideoPlayer_VolumeChanged
StatusTextBlock.Text = "Stopped '" & receiver.FriendlyName & "'."
End If
' </SnippetStopAsync>
Catch
StatusTextBlock.Text = "Failed to stop '" & receiver.FriendlyName & "'."
End Try
End Sub
' </SnippetStartAndStop>
' <SnippetReceiverEvents>
' <SnippetCurrentTimeChangeRequested>
Async Sub receiver_CurrentTimeChangeRequested(
sender As Windows.Media.PlayTo.PlayToReceiver,
args As Windows.Media.PlayTo.CurrentTimeChangeRequestedEventArgs)
Await Dispatcher.RunAsync(
Windows.UI.Core.CoreDispatcherPriority.Normal,
Sub()
VideoPlayer.Position = args.Time
receiver.NotifySeeking()
seeking = True
End Sub)
End Sub
' </SnippetCurrentTimeChangeRequested>
' <SnippetMuteChangeRequested>
Async Sub receiver_MuteChangeRequested(
sender As Windows.Media.PlayTo.PlayToReceiver,
args As Windows.Media.PlayTo.MuteChangeRequestedEventArgs)
Await Dispatcher.RunAsync(
Windows.UI.Core.CoreDispatcherPriority.Normal,
Sub()
VideoPlayer.IsMuted = args.Mute
End Sub)
End Sub
' </SnippetMuteChangeRequested>
' <SnippetPauseRequested>
Async Sub receiver_PauseRequested(
sender As Windows.Media.PlayTo.PlayToReceiver,
args As Object)
Await Dispatcher.RunAsync(
Windows.UI.Core.CoreDispatcherPriority.Normal,
Sub()
VideoPlayer.Pause()
End Sub)
End Sub
' </SnippetPauseRequested>
' <SnippetPlaybackRateChangeRequested>
Async Sub receiver_PlaybackRateChangeRequested(
sender As Windows.Media.PlayTo.PlayToReceiver,
args As Windows.Media.PlayTo.PlaybackRateChangeRequestedEventArgs)
Await Dispatcher.RunAsync(
Windows.UI.Core.CoreDispatcherPriority.Normal,
Sub()
VideoPlayer.PlaybackRate = args.Rate
End Sub)
End Sub
' </SnippetPlaybackRateChangeRequested>
' <SnippetPlayRequested>
Async Sub receiver_PlayRequested(
sender As Windows.Media.PlayTo.PlayToReceiver,
args As Object)
Await Dispatcher.RunAsync(
Windows.UI.Core.CoreDispatcherPriority.Normal,
Sub()
VideoPlayer.Play()
End Sub)
End Sub
' </SnippetPlayRequested>
' <SnippetSourceChangeRequested>
Async Sub receiver_SourceChangeRequested(
sender As Windows.Media.PlayTo.PlayToReceiver,
args As Windows.Media.PlayTo.SourceChangeRequestedEventArgs)
If args.Stream IsNot Nothing Then
Await Dispatcher.RunAsync(
Windows.UI.Core.CoreDispatcherPriority.Normal,
Sub()
Dim stream = TryCast(args.Stream, Windows.Storage.Streams.IRandomAccessStream)
VideoPlayer.SetSource(stream, args.Stream.ContentType)
End Sub)
End If
End Sub
' </SnippetSourceChangeRequested>
' <SnippetStopRequested>
Async Sub receiver_StopRequested(
sender As Windows.Media.PlayTo.PlayToReceiver,
args As Object)
Await Dispatcher.RunAsync(
Windows.UI.Core.CoreDispatcherPriority.Normal,
Sub()
VideoPlayer.Stop()
End Sub)
End Sub
' </SnippetStopRequested>
' <SnippetTimeUpdateRequested>
Async Sub receiver_TimeUpdateRequested(
sender As Windows.Media.PlayTo.PlayToReceiver,
args As Object)
Await Dispatcher.RunAsync(
Windows.UI.Core.CoreDispatcherPriority.Normal,
Sub()
receiver.NotifyTimeUpdate(VideoPlayer.Position)
End Sub)
End Sub
' </SnippetTimeUpdateRequested>
' <SnippetVolumeChangeRequested>
Async Sub receiver_VolumeChangeRequested(
sender As Windows.Media.PlayTo.PlayToReceiver,
args As Windows.Media.PlayTo.VolumeChangeRequestedEventArgs)
Await Dispatcher.RunAsync(
Windows.UI.Core.CoreDispatcherPriority.Normal,
Sub()
VideoPlayer.Volume = args.Volume
End Sub)
End Sub
' </SnippetVolumeChangeRequested>
' </SnippetReceiverEvents>
' <SnippetPlayerEvents>
' <SnippetNotifyPlayPauseStopError>
Sub VideoPlayer_CurrentStateChanged()
If receiver IsNot Nothing Then
Select Case VideoPlayer.CurrentState
Case MediaElementState.Playing
receiver.NotifyPlaying()
Case MediaElementState.Paused
receiver.NotifyPaused()
Case MediaElementState.Stopped
receiver.NotifyStopped()
End Select
End If
End Sub
Sub VideoPlayer_MediaFailed()
If receiver IsNot Nothing Then receiver.NotifyError()
End Sub
' </SnippetNotifyPlayPauseStopError>
' <SnippetNotifyEnded>
Sub VideoPlayer_MediaEnded()
If receiver IsNot Nothing Then
receiver.NotifyEnded()
VideoPlayer.Stop()
End If
End Sub
' </SnippetNotifyEnded>
' <SnippetNotifyDurationChange>
Sub VideoPlayer_MediaOpened()
If receiver IsNot Nothing Then
receiver.NotifyDurationChange(VideoPlayer.NaturalDuration.TimeSpan)
receiver.NotifyLoadedMetadata()
End If
End Sub
' </SnippetNotifyDurationChange>
' <SnippetNotifyRateChange>
Sub VideoPlayer_RateChanged()
If receiver IsNot Nothing Then
receiver.NotifyRateChange(VideoPlayer.PlaybackRate)
End If
End Sub
' </SnippetNotifyRateChange>
' <SnippetNotifySeek>
Sub VideoPlayer_SeekCompleted()
If receiver IsNot Nothing Then
If Not seeking Then
receiver.NotifySeeking()
receiver.NotifySeeked()
seeking = False
End If
End If
End Sub
' </SnippetNotifySeek>
' <SnippetNotifyVolumeChanged>
Sub VideoPlayer_VolumeChanged()
If receiver IsNot Nothing Then
receiver.NotifyVolumeChange(VideoPlayer.Volume, VideoPlayer.IsMuted)
End If
End Sub
' </SnippetNotifyVolumeChanged>
' </SnippetPlayerEvents>
End Class