public async Task InitializeAsync(ISegmentManagerReaders segmentManagerReaders, Action checkConfiguration, Action checkForSamples, CancellationToken cancellationToken, Action <IProgramStreams> programStreamsHandler)
{
this._checkConfiguration = checkConfiguration;
Task startReaderTask = this._segmentReaders.Manager.StartAsync();
MediaReader localReader = this;
QueueWorker <WorkBuffer> queueWorker = new QueueWorker <WorkBuffer>((Action <WorkBuffer>)(wi =>
{
IMediaParser mediaParser = localReader._mediaParser;
if (null == wi)
{
mediaParser.ProcessEndOfData();
}
else
{
if (null != wi.Metadata)
{
mediaParser.StartSegment(wi.Metadata);
wi.Metadata = (ISegmentMetadata)null;
}
mediaParser.ProcessData(wi.Buffer, 0, wi.Length);
}
}), (Action <WorkBuffer>)(buffer => this._blockingPool.Free(buffer)));
this._queueWorker = queueWorker;
this._callbackReader = new CallbackReader(segmentManagerReaders.Readers, new Action <WorkBuffer>(queueWorker.Enqueue), this._blockingPool);
this._bufferingManager.Initialize((IQueueThrottling)queueWorker, checkForSamples);
try
{
await startReaderTask.ConfigureAwait(false);
ContentType contentType = this._segmentReaders.Manager.ContentType;
if ((ContentType)null == contentType)
{
Debug.WriteLine("MediaReader.CreateReaderPipeline() unable to determine content type, defaulting to transport stream");
contentType = ContentTypes.TransportStream;
}
else if (ContentTypes.Binary == contentType)
{
Debug.WriteLine("MediaReader.CreateReaderPipeline() detected binary content, defaulting to transport stream");
contentType = ContentTypes.TransportStream;
}
MediaParserParameters mediaParserParameters = new MediaParserParameters();
this._mediaParser = await this._mediaParserFactory.CreateAsync((IMediaParserParameters)mediaParserParameters, contentType, cancellationToken).ConfigureAwait(false);
if (null == this._mediaParser)
{
throw new NotSupportedException("Unsupported content type: " + (object)contentType);
}
this._mediaParser.ConfigurationComplete += new EventHandler(this.ConfigurationComplete);
this._mediaParser.Initialize(this._bufferingManager, programStreamsHandler);
this._mediaParser.InitializeStream(this._segmentReaders.Manager.StreamMetadata);
}
catch (Exception ex)
{
this._bufferingManager.Shutdown((IQueueThrottling)queueWorker);
throw;
}
}
private async Task ReadResponseAsync(IMediaParser mediaParser, IWebStreamResponse webStreamResponse, WebResponse webResponse, SingleStreamMediaManager.QueueThrottle throttle, CancellationToken cancellationToken)
{
byte[] buffer = new byte[16384];
Task cancellationTask = CancellationTokenExtensions.AsTask(cancellationToken);
try
{
ISegmentMetadata segmentMetadata = this._webMetadataFactory.CreateSegmentMetadata(webResponse, (ContentType)null);
mediaParser.StartSegment(segmentMetadata);
using (Stream stream = await webStreamResponse.GetStreamAsync(cancellationToken).ConfigureAwait(false))
{
while (true)
{
Task waitTask = throttle.WaitAsync();
if (!waitTask.IsCompleted)
{
Task task = await TaskEx.WhenAny(waitTask, cancellationTask).ConfigureAwait(false);
cancellationToken.ThrowIfCancellationRequested();
}
int length = await stream.ReadAsync(buffer, 0, buffer.Length, cancellationToken).ConfigureAwait(false);
if (length > 0)
{
mediaParser.ProcessData(buffer, 0, length);
}
else
{
break;
}
}
}
}
finally
{
mediaParser.ProcessEndOfData();
}
}
async Task ReadResponseAsync(IMediaParser mediaParser, IWebStreamResponse webStreamResponse, WebResponse webResponse, QueueThrottle throttle, CancellationToken cancellationToken)
{
//Debug.WriteLine("SingleStreamMediaManager.ReadResponseAsync()");
var buffer = new byte[16 * 1024];
var cancellationTask = cancellationToken.AsTask();
try
{
var segmentMetadata = _webMetadataFactory.CreateSegmentMetadata(webResponse);
mediaParser.StartSegment(segmentMetadata);
using (var stream = await webStreamResponse.GetStreamAsync(cancellationToken).ConfigureAwait(false))
{
for (; ; )
{
var waitTask = throttle.WaitAsync();
if (!waitTask.IsCompleted)
{
await Task.WhenAny(waitTask, cancellationTask).ConfigureAwait(false);
cancellationToken.ThrowIfCancellationRequested();
}
var length = await stream.ReadAsync(buffer, 0, buffer.Length, cancellationToken).ConfigureAwait(false);
if (length <= 0)
return;
mediaParser.ProcessData(buffer, 0, length);
}
}
}
finally
{
mediaParser.ProcessEndOfData();
//Debug.WriteLine("SingleStreamMediaManager.ReadResponseAsync() done");
}
}