private async Task <IMediaReader> CreateReaderPipeline(ISegmentManagerReaders segmentManagerReaders)
{
MediaReader reader = new MediaReader(_bufferingManagerFactory(), _mediaParserFactory, segmentManagerReaders, new WorkBufferBlockingPool(8));
await reader.InitializeAsync(segmentManagerReaders, CheckConfigurationCompleted, _mediaStreamConfigurator.CheckForSamples, _playbackCancellationTokenSource.Token, _programStreamsHandler).ConfigureAwait(false);
return(reader);
}
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;
}
}
public MediaReader(IBufferingManager bufferingManager, IMediaParserFactory mediaParserFactory, ISegmentManagerReaders segmentReaders, IBlockingPool<WorkBuffer> blockingPool)
{
if (null == bufferingManager)
throw new ArgumentNullException(nameof(bufferingManager));
if (null == mediaParserFactory)
throw new ArgumentNullException(nameof(mediaParserFactory));
_bufferingManager = bufferingManager;
_mediaParserFactory = mediaParserFactory;
_blockingPool = blockingPool;
_segmentReaders = segmentReaders;
}
public MediaReader(IBufferingManager bufferingManager, IMediaParserFactory mediaParserFactory, ISegmentManagerReaders segmentReaders, IBlockingPool <WorkBuffer> blockingPool)
{
if (null == bufferingManager)
{
throw new ArgumentNullException("bufferingManager");
}
if (null == mediaParserFactory)
{
throw new ArgumentNullException("mediaParserFactory");
}
this._bufferingManager = bufferingManager;
this._mediaParserFactory = mediaParserFactory;
this._blockingPool = blockingPool;
this._segmentReaders = segmentReaders;
}
public void Dispose()
{
if (0 != Interlocked.Exchange(ref this._isDisposed, 1))
{
return;
}
using (this._callbackReader)
;
using (this._queueWorker)
;
using (this._blockingPool)
;
using (this._mediaParser)
;
this._callbackReader = (CallbackReader)null;
this._queueWorker = (QueueWorker <WorkBuffer>)null;
this._blockingPool = (IBlockingPool <WorkBuffer>)null;
this._mediaParser = (IMediaParser)null;
this._bufferingManager = (IBufferingManager)null;
this._segmentReaders = (ISegmentManagerReaders)null;
}
public void Dispose()
{
if (0 != Interlocked.Exchange(ref _isDisposed, 1))
return;
using (_callbackReader)
{ }
using (_queueWorker)
{ }
using (_blockingPool)
{ }
using (_mediaParser)
{ }
_callbackReader = null;
_queueWorker = null;
_blockingPool = null;
_mediaParser = null;
_bufferingManager = null;
_segmentReaders = null;
}
public async Task InitializeAsync(ISegmentManagerReaders segmentManagerReaders, Action checkConfiguration,
Action checkForSamples, CancellationToken cancellationToken, Action<IProgramStreams> programStreamsHandler)
{
_checkConfiguration = checkConfiguration;
var startReaderTask = _segmentReaders.Manager.StartAsync();
var localReader = this;
var queueWorker = new QueueWorker<WorkBuffer>(
wi =>
{
//Debug.WriteLine("MediaReader dequeued " + wi);
var mediaParser = localReader._mediaParser;
if (null == wi)
mediaParser.ProcessEndOfData();
else
{
if (null != wi.Metadata)
{
mediaParser.StartSegment(wi.Metadata);
wi.Metadata = null;
}
mediaParser.ProcessData(wi.Buffer, 0, wi.Length);
}
},
buffer => _blockingPool.Free(buffer));
_queueWorker = queueWorker;
_callbackReader = new CallbackReader(segmentManagerReaders.Readers, queueWorker.Enqueue, _blockingPool);
_bufferingManager.Initialize(queueWorker, checkForSamples);
try
{
await startReaderTask.ConfigureAwait(false);
var streamContentType = _segmentReaders.Manager.StreamContentType;
if (null == streamContentType)
{
Debug.WriteLine("MediaReader.CreateReaderPipeline() unable to determine content type, defaulting to transport stream");
streamContentType = ContentTypes.TransportStream;
}
else if (ContentTypes.Binary == streamContentType)
{
Debug.WriteLine("MediaReader.CreateReaderPipeline() detected binary content, defaulting to transport stream");
streamContentType = ContentTypes.TransportStream;
}
var mediaParserParameters = new MediaParserParameters();
_mediaParser = await _mediaParserFactory.CreateAsync(mediaParserParameters, streamContentType, cancellationToken).ConfigureAwait(false);
if (null == _mediaParser)
throw new NotSupportedException("Unsupported stream content type: " + streamContentType);
_mediaParser.ConfigurationComplete += ConfigurationComplete;
_mediaParser.Initialize(_bufferingManager, programStreamsHandler);
_mediaParser.InitializeStream(_segmentReaders.Manager.StreamMetadata);
}
catch (Exception)
{
_bufferingManager.Shutdown(queueWorker);
throw;
}
}
async Task<IMediaReader> CreateReaderPipeline(ISegmentManagerReaders segmentManagerReaders)
{
var reader = new MediaReader(_bufferingManagerFactory(), _mediaParserFactory, segmentManagerReaders, new WorkBufferBlockingPool(MaxBuffers));
await reader.InitializeAsync(segmentManagerReaders, CheckConfigurationCompleted,
_mediaStreamConfigurator.CheckForSamples,
_playbackCancellationTokenSource.Token, _programStreamsHandler)
.ConfigureAwait(false);
return reader;
}
