public static TransportCommands Create(XDocument document)
{
var command = new TransportCommands();
var actionList = document.Descendants(UPnpNamespaces.Svc + "actionList");
foreach (var container in actionList.Descendants(UPnpNamespaces.Svc + "action"))
{
command.ServiceActions.Add(ServiceActionFromXml(container));
}
var stateValues = document.Descendants(UPnpNamespaces.ServiceStateTable).FirstOrDefault();
if (stateValues != null)
{
foreach (var container in stateValues.Elements(UPnpNamespaces.Svc + "stateVariable"))
{
command.StateVariables.Add(FromXml(container));
}
}
return(command);
}
private async Task <Tuple <bool, uBaseObject> > GetPositionInfo(TransportCommands avCommands, CancellationToken cancellationToken)
{
var command = avCommands.ServiceActions.FirstOrDefault(c => c.Name == "GetPositionInfo");
if (command == null)
{
return(new Tuple <bool, uBaseObject>(false, null));
}
var service = GetAvTransportService();
if (service == null)
{
throw new InvalidOperationException("Unable to find service");
}
var rendererCommands = await GetRenderingProtocolAsync(cancellationToken).ConfigureAwait(false);
var result = await new SsdpHttpClient(_httpClient, _config).SendCommandAsync(Properties.BaseUrl, service, command.Name, rendererCommands.BuildPost(command, service.ServiceType), false)
.ConfigureAwait(false);
if (result == null || result.Document == null)
{
return(new Tuple <bool, uBaseObject>(false, null));
}
var trackUriElem = result.Document.Descendants(uPnpNamespaces.AvTransport + "GetPositionInfoResponse").Select(i => i.Element("TrackURI")).FirstOrDefault(i => i != null);
var trackUri = trackUriElem == null ? null : trackUriElem.Value;
var durationElem = result.Document.Descendants(uPnpNamespaces.AvTransport + "GetPositionInfoResponse").Select(i => i.Element("TrackDuration")).FirstOrDefault(i => i != null);
var duration = durationElem == null ? null : durationElem.Value;
if (!string.IsNullOrWhiteSpace(duration) &&
!string.Equals(duration, "NOT_IMPLEMENTED", StringComparison.OrdinalIgnoreCase))
{
Duration = TimeSpan.Parse(duration, UsCulture);
}
else
{
Duration = null;
}
var positionElem = result.Document.Descendants(uPnpNamespaces.AvTransport + "GetPositionInfoResponse").Select(i => i.Element("RelTime")).FirstOrDefault(i => i != null);
var position = positionElem == null ? null : positionElem.Value;
if (!string.IsNullOrWhiteSpace(position) && !string.Equals(position, "NOT_IMPLEMENTED", StringComparison.OrdinalIgnoreCase))
{
Position = TimeSpan.Parse(position, UsCulture);
}
var track = result.Document.Descendants("TrackMetaData").FirstOrDefault();
if (track == null)
{
//If track is null, some vendors do this, use GetMediaInfo instead
return(new Tuple <bool, uBaseObject>(true, null));
}
var trackString = (string)track;
if (string.IsNullOrWhiteSpace(trackString) || string.Equals(trackString, "NOT_IMPLEMENTED", StringComparison.OrdinalIgnoreCase))
{
return(new Tuple <bool, uBaseObject>(true, null));
}
XElement uPnpResponse;
// Handle different variations sent back by devices
try
{
uPnpResponse = XElement.Parse(trackString);
}
catch (Exception)
{
// first try to add a root node with a dlna namesapce
try
{
uPnpResponse = XElement.Parse("<data xmlns:dlna=\"urn:schemas-dlna-org:device-1-0\">" + trackString + "</data>");
uPnpResponse = uPnpResponse.Descendants().First();
}
catch (Exception ex)
{
_logger.LogError(ex, "Unable to parse xml {0}", trackString);
return(new Tuple <bool, uBaseObject>(true, null));
}
}
var e = uPnpResponse.Element(uPnpNamespaces.items);
var uTrack = CreateUBaseObject(e, trackUri);
return(new Tuple <bool, uBaseObject>(true, uTrack));
}
private async Task <uBaseObject> GetMediaInfo(TransportCommands avCommands, CancellationToken cancellationToken)
{
var command = avCommands.ServiceActions.FirstOrDefault(c => c.Name == "GetMediaInfo");
if (command == null)
{
return(null);
}
var service = GetAvTransportService();
if (service == null)
{
throw new InvalidOperationException("Unable to find service");
}
var rendererCommands = await GetRenderingProtocolAsync(cancellationToken).ConfigureAwait(false);
var result = await new SsdpHttpClient(_httpClient, _config).SendCommandAsync(Properties.BaseUrl, service, command.Name, rendererCommands.BuildPost(command, service.ServiceType), false)
.ConfigureAwait(false);
if (result == null || result.Document == null)
{
return(null);
}
var track = result.Document.Descendants("CurrentURIMetaData").FirstOrDefault();
if (track == null)
{
return(null);
}
var e = track.Element(uPnpNamespaces.items) ?? track;
var elementString = (string)e;
if (!string.IsNullOrWhiteSpace(elementString))
{
return(UpnpContainer.Create(e));
}
track = result.Document.Descendants("CurrentURI").FirstOrDefault();
if (track == null)
{
return(null);
}
e = track.Element(uPnpNamespaces.items) ?? track;
elementString = (string)e;
if (!string.IsNullOrWhiteSpace(elementString))
{
return(new uBaseObject
{
Url = elementString
});
}
return(null);
}
