//Start getting the video stream
public async Task StartStream()
{
try
{
StartStreaming request = new StartStreaming {
Decorate = true
};
using (var call = _client.StartStream(request))
{
var responseStream = call.ResponseStream;
while (await responseStream.MoveNext())
{
var imageBytes = responseStream.Current.Image.ToByteArray();
var carAction = responseStream.Current.Action;
//Call update UI
_mainWindow.HandleStream(imageBytes, carAction);
}
}
}
catch (RpcException e)
{
Console.Write("RPC failed " + e);
throw;
}
}
protected override void HandleStartStreaming(IMessageHeader header, StartStreaming startStreaming)
{
base.HandleStartStreaming(header, startStreaming);
var channelMetadata = Simulator.GetChannelMetadata(header)
.Cast <ChannelMetadataRecord>()
.ToList();
ChannelMetadata(header, channelMetadata);
StartSendingChannelData(header);
}
///// <summary>
///// Handles the channel describe.
///// </summary>
///// <param name="args">The <see cref="ProtocolEventArgs{T}"/> instance containing the event data.</param>
//protected override void HandleChannelDescribe(ProtocolEventArgs<ChannelDescribe, IList<ChannelMetadataRecord>> args)
//{
// var uris = args.Message.Uris.Contains(EtpUri.RootUri)
// ? new[] { EtpUris.Witsml131, EtpUris.Witsml141, EtpUris.Witsml200 }
// : args.Message.Uris.Select(x => new EtpUri(x));
//
// foreach (var family in uris.ToLookup(x => x.Version))
// {
// var providers = _providers[family.Key];
// foreach (var provider in providers)
// {
// var metadata = provider.GetChannelMetadata(Session.Adapter, family.ToArray());
//
// metadata.ForEach(m =>
// {
// // Check by uri if we have the metadata in our dictionary.
// var channelMetadataRecord = Channels.Values
// .Select(c => c.Item2)
// .FirstOrDefault(c => c.ChannelUri.EqualsIgnoreCase(m.ChannelUri));
//
// // if not add it and set its channelId
// if (channelMetadataRecord == null)
// {
// var channelUri = new EtpUri(m.ChannelUri);
// var parentUri = channelUri.Parent;
//
// // e.g. Trajectory channels
// if (string.IsNullOrWhiteSpace(parentUri.ObjectId))
// parentUri = channelUri;
//
// m.ChannelId = Channels.Keys.Count;
// Channels.Add(m.ChannelId, new Tuple<EtpUri, IChannelMetadataRecord>(parentUri, m));
// channelMetadataRecord = m;
// }
//
// args.Context.Add(channelMetadataRecord);
// });
// }
// }
//}
/// <summary>
/// Handles the start streaming.
/// </summary>
/// <param name="header">The header.</param>
/// <param name="startStreaming">The start streaming.</param>
protected override void HandleStartStreaming(IMessageHeader header, StartStreaming startStreaming)
{
// No action needed if streaming already started
if (_tokenSource != null)
{
return;
}
base.HandleStartStreaming(header, startStreaming);
Request = null;
if (_tokenSource == null)
{
_tokenSource = new CancellationTokenSource();
}
var token = _tokenSource.Token;
Logger.Debug("Channel Streaming starting.");
var channelIds = Channels.Keys.ToList();
Task.Run(() => StartChannelStreaming(header.MessageId, channelIds, token), token);
}