/// <summary>
/// Handles flow configuration changed event.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">An AudioVideoFlowConfigurationChangedEventArgs that contains the event data.</param>
private void HandleAudioVideoConfigurationChanged(object sender, AudioVideoFlowConfigurationChangedEventArgs e)
{
// If the call was put on hold before the activity has started executing,
// then we would only get the call retrieved event.
// In this case we safely call startspeakaync to replay the prompt.
// However if the call was put on hold while the statement activity was
// executing ( in our case in between a speakasync operation) then,
// we should get a event for the call being put on hold, and in this case we need to cancel the speak async opeation.
// later we will get a call retrieved event, in which case we start the speakasync operation.
if (this.GetCallConfiguration(AudioVideoCall) == AvCallCommunicationEvents.Retrieved && m_callOnHold == true)
{
m_callOnHold = false;
if (AudioVideoCall.State == CallState.Established)
{
StartSpeakAsync();
}
}
else if (this.GetCallConfiguration(AudioVideoCall) == AvCallCommunicationEvents.OnHold && m_callOnHold == false)
{
m_callOnHold = true;
if (AudioVideoCall.State == CallState.Established)
{
m_speechSynthesizer.SpeakAsyncCancelAll();
}
}
}
// Callback that is called when the configuration of an AudioVideoFlow changes.
private void audioVideoFlow_ConfigurationChanged(object sender, AudioVideoFlowConfigurationChangedEventArgs e)
{
// application can check AudioVideoFlow values to see the result of the negotiation.
}
