/// <summary>
/// Gets a stream for the resource which is described by this file handle if the stream is already open or opens a new stream for it.
/// </summary>
/// <returns>
/// This method returns the same stream for the same thread; it returns a new stream for a new thread.
/// </returns>
public Stream GetOrOpenStream()
{
Thread currentThread = Thread.CurrentThread;
Stream stream;
lock (_syncObj)
if (_threadStreams.TryGetValue(currentThread, out stream))
{
return(stream);
}
IResourceAccessor resourceAccessor = _resource.ResourceAccessor;
try
{
if (resourceAccessor != null)
{
resourceAccessor.PrepareStreamAccess();
lock (_syncObj)
return(_threadStreams[currentThread] = resourceAccessor.OpenRead());
}
}
catch (Exception e)
{
ServiceRegistration.Get <ILogger>().Warn("Dokan FileHandle: Error creating stream for resource '{0}'", e, resourceAccessor);
}
return(null);
}
/// <summary>
/// Creates an <see cref="IInputSource"/> object for a given mediaitem.
/// </summary>
/// <param name="resourceLocator">Locator instance to the media item to create the input source for.</param>
/// <param name="mimeType">Mime type of the media item, if present. May be <c>null</c>.</param>
/// <returns>Input source object for the given <paramref name="resourceLocator"/> or <c>null</c>, if no input source
/// could be created.</returns>
public IInputSource CreateInputSource(IResourceLocator resourceLocator, string mimeType)
{
if (!CanPlay(resourceLocator, mimeType))
{
return(null);
}
IResourceAccessor accessor = resourceLocator.CreateAccessor();
IInputSource result;
AudioCDResourceAccessor acdra = accessor as AudioCDResourceAccessor;
if (acdra != null)
{
result = BassCDTrackInputSource.Create(acdra.Drive, acdra.TrackNo);
}
else
{
string filePath = accessor.ResourcePathName;
if (URLUtils.IsCDDA(filePath))
{
ILocalFsResourceAccessor lfra = accessor as ILocalFsResourceAccessor;
if (lfra == null)
{
return(null);
}
result = BassFsCDTrackInputSource.Create(lfra.LocalFileSystemPath);
}
else if (URLUtils.IsMODFile(filePath))
{
result = BassMODFileInputSource.Create(accessor);
}
else
{
result = BassAudioFileInputSource.Create(accessor);
}
// TODO: Handle web streams when we have resource accessors for web URLs: BassWebStreamInputSource.Create(...);
}
accessor.PrepareStreamAccess();
Log.Debug("InputSourceFactory: Creating input source for media resource '{0}' of type '{1}'", accessor, result.GetType());
return(result);
}