public virtual async Task <TMediaStreamSource> CreateMediaStreamSourceAsync(Uri source, CancellationToken cancellationToken)
{
Debug.WriteLine("MediaStreamFacadeBase.CreateMediaStreamSourceAsync() " + (object)source);
if ((Uri)null != source && !source.IsAbsoluteUri)
{
throw new ArgumentException("source must be absolute: " + (object)source);
}
CancellationTokenSource closeCts = CancellationTokenSource.CreateLinkedTokenSource(this._disposeCancellationTokenSource.Token);
if (!this._closeCancellationTokenSource.IsCancellationRequested)
{
this._closeCancellationTokenSource.Cancel();
}
Exception exception;
TMediaStreamSource mediaStreamSource;
try
{
using (CancellationTokenSource linkedTokenSource = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken, closeCts.Token))
{
linkedTokenSource.CancelAfter(MediaStreamFacadeSettings.Parameters.CreateTimeout);
IMediaManager mediaManager = this.MediaManager;
if (null != mediaManager)
{
await this.StopMediaAsync(mediaManager, linkedTokenSource.Token).ConfigureAwait(false);
}
this._closeCancellationTokenSource.Dispose();
this._closeCancellationTokenSource = closeCts;
if ((Uri)null == source)
{
mediaStreamSource = default(TMediaStreamSource);
goto label_21;
}
else
{
IMediaManager mediaManager1 = this.MediaManager;
if (mediaManager1 == null)
{
mediaManager1 = await this.CreateMediaManagerAsync(linkedTokenSource.Token).ConfigureAwait(false);
}
mediaManager = mediaManager1;
IMediaStreamConfigurator configurator = await mediaManager.OpenMediaAsync((ICollection <Uri>) new Uri[1]
{
source
}, linkedTokenSource.Token).ConfigureAwait(false);
TMediaStreamSource mss = await configurator.CreateMediaStreamSourceAsync <TMediaStreamSource>(linkedTokenSource.Token).ConfigureAwait(false);
mediaStreamSource = mss;
goto label_21;
}
}
}
catch (OperationCanceledException ex)
{
exception = (Exception)ex;
}
catch (Exception ex)
{
Debug.WriteLine("MediaStreamFacadeBase.CreateAsync() failed: " + ExceptionExtensions.ExtendedMessage(ex));
exception = (Exception) new AggregateException(ex.Message, ex);
}
await this.CloseAsync().ConfigureAwait(false);
throw exception;
label_21:
return(mediaStreamSource);
}