/// <summary>
/// Dispose the stream provider instance
/// </summary>
internal void DisposeProvider()
{
if (this.streamProvider != null)
{
WebUtil.Dispose(this.streamProvider);
this.streamProvider = null;
}
}
/// <summary>
/// Asks the data service for a stream provider instance. Throw if none is implemented.
/// </summary>
/// <param name="dataService">data service instance</param>
/// <returns>stream provider instance</returns>
internal static IDataServiceStreamProvider LoadStreamProvider(IDataService dataService)
{
IDataServiceStreamProvider streamProvider = dataService.Provider.GetService <IDataServiceStreamProvider>(dataService);
if (streamProvider == null)
{
throw new DataServiceException(500, Strings.DataServiceStreamProviderWrapper_MustImplementIDataServiceStreamProviderToSupportStreaming);
}
return(streamProvider);
}
private void LoadStreamProvider()
{
if (this.streamProvider == null)
{
if (this.dataService.Configuration.DataServiceBehavior.MaxProtocolVersion >= DataServiceProtocolVersion.V3)
{
this.streamProvider = this.dataService.Provider.GetService <IDataServiceStreamProvider2>();
}
if (this.streamProvider == null)
{
this.streamProvider = this.dataService.Provider.GetService <IDataServiceStreamProvider>();
}
}
}
/// <summary>
/// Asks the data service for a stream provider instance. Throw if none is implemented.
/// </summary>
/// <remarks>
/// If GetService returns two different object instances for IDataServiceStreamProvider and IDataServiceStreamProvider2,
/// LoadStreamProvider always use the instance from GetService(IDataServiceStreamProvider2) for this.streamProvider.
/// </remarks>
private void LoadStreamProvider()
{
if (this.streamProvider == null)
{
// First attempt to load IDataServiceStreamProvider2 first.
// This makes call order predictable. And if a service contains both MLEs and named streams, we can be certain
// that the instance returned from GetService<IDSSP2> can be casted to IDSSP, but the reverse might not be true.
this.streamProvider = this.dataService.Provider.GetService <IDataServiceStreamProvider2>();
if (this.streamProvider == null)
{
// Load IDataServiceStreamProvider if MaxProtocolVersion is V1/V2 or the V3+ service doesn't implement IDataServiceStreamProvider2.
this.streamProvider = this.dataService.Provider.GetService <IDataServiceStreamProvider>();
}
}
}
/// <summary>
/// Constructs an instance of the stream provider.
/// </summary>
/// <param name="streamCache">Storage for the streams</param>
public DSPStreamProvider(DSPMediaResourceStorage streamCache)
{
this.provider = new DSPStreamProvider2(streamCache);
}
/// <summary>
/// Constructs an instance of the stream provider.
/// </summary>
/// <param name="streamCache">Storage for the streams</param>
public DSPStreamProvider(DSPMediaResourceStorage streamCache)
{
this.provider = new DSPStreamProvider2(streamCache);
}
