/// <summary>
/// Starts the video channel: VideoChannel.BeginStop()
/// </summary>
private void StopVideo()
{
//removes video from the conversation
AsyncCallback callback = new AsyncOperationHandler(_videoChannel.EndStop).Callback;
try
{
_videoChannel.BeginStop(callback, null);
}
catch (LyncClientException lyncClientException)
{
Console.WriteLine(lyncClientException);
}
catch (SystemException systemException)
{
if (LyncModelExceptionHelper.IsLyncException(systemException))
{
// Log the exception thrown by the Lync Model API.
Console.WriteLine("Error: " + systemException);
}
else
{
// Rethrow the SystemException which did not come from the Lync Model API.
throw;
}
}
}
//*****************************************************************************************
// VideoChannel related actions
//
// The video channel action will behave differently depending on whether the audio is already
// connected.
//
// If audio is not connected, starting video is equivalent to connecting the modality. If the
// conversation already has audio, starting video will start the outgoing video stream. The
// other participants in the conversation also need to start their own video.
//
// Stopping the video channel will stop both outgoing and incoming video. It will remove video
// from the conversation.
//
//*****************************************************************************************
/// <summary>
/// Starts the video channel: VideoChannel.BeginStart()
/// </summary>
private void StartVideo()
{
_log.Debug("StartVideo");
if (!_videoChannel.CanInvoke(ChannelAction.Start))
{
_log.Debug("StartVideo can't start");
return;
}
//starts a video call or the video stream in a audio call
AsyncCallback callback = new AsyncOperationHandler(_videoChannel.EndStart).Callback;
try
{
_videoChannel.BeginStart(callback, null);
}
catch (LyncClientException lyncClientException)
{
Console.WriteLine(lyncClientException);
}
catch (SystemException systemException)
{
if (LyncModelExceptionHelper.IsLyncException(systemException))
{
// Log the exception thrown by the Lync Model API.
_log.ErrorException("Error: ", systemException);
}
else
{
// Rethrow the SystemException which did not come from the Lync Model API.
throw;
}
}
}
/// <summary>
/// Ends the conversation if the user closes the window.
/// </summary>
public void Close()
{
if (Conversation == null)
{
return;
}
_log.Debug("Close");
//need to remove event listeners otherwide events may be received after the form has been unloaded
Conversation.StateChanged -= OnConversationStateChanged;
Conversation.ParticipantAdded -= OnConversationParticipantAdded;
Conversation.ParticipantRemoved -= OnConversationParticipantRemoved;
Conversation.ActionAvailabilityChanged -= OnConversationActionAvailabilityChanged;
InvokePartClose();
//if the conversation is active, will end it
if (Conversation.State != ConversationState.Terminated)
{
//ends the conversation which will disconnect all modalities
try
{
Conversation.End();
}
catch (LyncClientException lyncClientException)
{
_log.ErrorException("Close", lyncClientException);
}
catch (SystemException systemException)
{
if (LyncModelExceptionHelper.IsLyncException(systemException))
{
// Log the exception thrown by the Lync Model API.
_log.ErrorException("Error: ", systemException);
}
else
{
// Rethrow the SystemException which did not come from the Lync Model API.
throw;
}
}
}
Conversation = null;
}
