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+using System;
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+using System.Collections.Generic;
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+using System.IO;
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+using System.Linq;
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+using System.Text;
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+using System.Threading;
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+using System.Threading.Tasks;
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+using MediaBrowser.Common.Net;
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+using MediaBrowser.Controller;
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+using MediaBrowser.Controller.Library;
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+using MediaBrowser.Controller.LiveTv;
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+using MediaBrowser.Model.Dto;
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+using MediaBrowser.Model.IO;
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+using MediaBrowser.Model.Logging;
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+using MediaBrowser.Model.MediaInfo;
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+using MediaBrowser.Model.Net;
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+
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+namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun
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+{
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+ public class LegacyHdHomerunLiveStream : LiveStream, IDirectStreamProvider
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+ {
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+ private readonly ILogger _logger;
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+ private readonly IHttpClient _httpClient;
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+ private readonly IFileSystem _fileSystem;
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+ private readonly IServerApplicationPaths _appPaths;
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+ private readonly IServerApplicationHost _appHost;
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+ private readonly ISocketFactory _socketFactory;
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+
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+ private readonly CancellationTokenSource _liveStreamCancellationTokenSource = new CancellationTokenSource();
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+ private readonly TaskCompletionSource<bool> _liveStreamTaskCompletionSource = new TaskCompletionSource<bool>();
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+ private readonly MulticastStream _multicastStream;
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+ private readonly string _channelUrl;
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+ private readonly int _numTuners;
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+
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+ public LegacyHdHomerunLiveStream(MediaSourceInfo mediaSource, string originalStreamId, string channelUrl, int numTuners, IFileSystem fileSystem, IHttpClient httpClient, ILogger logger, IServerApplicationPaths appPaths, IServerApplicationHost appHost, ISocketFactory socketFactory)
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+ : base(mediaSource)
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+ {
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+ _fileSystem = fileSystem;
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+ _httpClient = httpClient;
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+ _logger = logger;
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+ _appPaths = appPaths;
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+ _appHost = appHost;
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+ _socketFactory = socketFactory;
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+ OriginalStreamId = originalStreamId;
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+ _multicastStream = new MulticastStream(_logger);
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+ _channelUrl = channelUrl;
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+ _numTuners = numTuners;
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+ }
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+
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+ protected override async Task OpenInternal(CancellationToken openCancellationToken)
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+ {
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+ _liveStreamCancellationTokenSource.Token.ThrowIfCancellationRequested();
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+
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+ var mediaSource = OriginalMediaSource;
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+
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+ var splitString = mediaSource.Path.Split('_');
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+ var remoteIp = splitString[0];
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+ var localPort = Convert.ToInt32(splitString[1]);
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+
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+ _logger.Info("Opening Legacy HDHR Live stream from {0}", remoteIp);
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+
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+ var taskCompletionSource = new TaskCompletionSource<bool>();
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+
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+ StartStreaming(remoteIp, localPort, taskCompletionSource, _liveStreamCancellationTokenSource.Token);
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+
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+ //OpenedMediaSource.Protocol = MediaProtocol.File;
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+ //OpenedMediaSource.Path = tempFile;
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+ //OpenedMediaSource.ReadAtNativeFramerate = true;
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+
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+ OpenedMediaSource.Path = _appHost.GetLocalApiUrl("127.0.0.1") + "/LiveTv/LiveStreamFiles/" + UniqueId + "/stream.ts";
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+ OpenedMediaSource.Protocol = MediaProtocol.Http;
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+ OpenedMediaSource.SupportsDirectPlay = false;
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+ OpenedMediaSource.SupportsDirectStream = true;
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+ OpenedMediaSource.SupportsTranscoding = true;
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+
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+ await taskCompletionSource.Task.ConfigureAwait(false);
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+
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+ //await Task.Delay(5000).ConfigureAwait(false);
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+ }
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+
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+ public override Task Close()
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+ {
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+ _logger.Info("Closing Legacy HDHR live stream");
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+ _liveStreamCancellationTokenSource.Cancel();
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+
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+ return _liveStreamTaskCompletionSource.Task;
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+ }
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+
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+ private async Task StartStreaming(string remoteIp, int localPort, TaskCompletionSource<bool> openTaskCompletionSource, CancellationToken cancellationToken)
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+ {
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+ //await Task.Run(async () =>
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+ //{
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+ // var isFirstAttempt = true;
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+ // var udpClient = _socketFactory.CreateUdpSocket(localPort);
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+ // using (var legCommand = new HdHomerunManager(_socketFactory))
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+ // {
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+ // var remoteAddress = new IpAddressInfo(remoteIp, IpAddressFamily.InterNetwork);
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+ // IpAddressInfo localAddress = null;
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+ // var tcpSocket = _socketFactory.CreateSocket(IpAddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp, false);
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+ // try
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+ // {
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+ // tcpSocket.Connect(new IpEndPointInfo(remoteAddress, LegacyHdHomerunCommand.HdHomeRunPort));
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+ // localAddress = tcpSocket.LocalEndPoint.IpAddress;
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+ // tcpSocket.Close();
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+ // }
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+ // catch (Exception)
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+ // {
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+ // _logger.Error("Unable to determine local ip address for Legacy HDHomerun stream.");
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+ // return;
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+ // }
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+
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+ // while (!cancellationToken.IsCancellationRequested)
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+ // {
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+ // try
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+ // {
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+ // // send url to start streaming
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+ // await legCommand.StartStreaming(remoteAddress, localAddress, localPort, _channelUrl, _numTuners, cancellationToken).ConfigureAwait(false);
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+
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+ // var response = await udpClient.ReceiveAsync(cancellationToken).ConfigureAwait(false);
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+ // _logger.Info("Opened Legacy HDHR stream from {0}", _channelUrl);
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+
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+ // if (!cancellationToken.IsCancellationRequested)
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+ // {
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+ // Action onStarted = null;
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+ // if (isFirstAttempt)
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+ // {
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+ // onStarted = () => openTaskCompletionSource.TrySetResult(true);
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+ // }
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+
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+ // var stream = new UdpClientStream(udpClient);
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+ // await _multicastStream.CopyUntilCancelled(stream, onStarted, cancellationToken).ConfigureAwait(false);
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+ // }
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+ // }
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+ // catch (OperationCanceledException)
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+ // {
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+ // break;
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+ // }
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+ // catch (Exception ex)
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+ // {
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+ // if (isFirstAttempt)
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+ // {
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+ // _logger.ErrorException("Error opening live stream:", ex);
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+ // openTaskCompletionSource.TrySetException(ex);
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+ // break;
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+ // }
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+
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+ // _logger.ErrorException("Error copying live stream, will reopen", ex);
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+ // }
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+
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+ // isFirstAttempt = false;
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+ // }
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+
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+ // await legCommand.StopStreaming().ConfigureAwait(false);
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+ // udpClient.Dispose();
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+ // _liveStreamTaskCompletionSource.TrySetResult(true);
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+ // }
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+
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+ //}).ConfigureAwait(false);
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+ }
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+
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+ public Task CopyToAsync(Stream stream, CancellationToken cancellationToken)
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+ {
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+ return _multicastStream.CopyToAsync(stream);
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+ }
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+ }
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+
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+ // This handles the ReadAsync function only of a Stream object
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+ // This is used to wrap a UDP socket into a stream for MulticastStream which only uses ReadAsync
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+ public class UdpClientStream : Stream
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+ {
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+ private static int RtpHeaderBytes = 12;
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+ private static int PacketSize = 1316;
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+ private readonly ISocket _udpClient;
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+ bool disposed;
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+
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+ public UdpClientStream(ISocket udpClient) : base()
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+ {
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+ _udpClient = udpClient;
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+ }
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+
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+ public override async Task<int> ReadAsync(byte[] buffer, int offset, int count, CancellationToken cancellationToken)
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+ {
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+ if (buffer == null)
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+ throw new ArgumentNullException("buffer");
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+
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+ if (offset + count < 0)
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+ throw new ArgumentOutOfRangeException("offset + count must not be negative", "offset+count");
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+
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+ if (offset + count > buffer.Length)
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+ throw new ArgumentException("offset + count must not be greater than the length of buffer", "offset+count");
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+
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+ if (disposed)
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+ throw new ObjectDisposedException(typeof(UdpClientStream).ToString());
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+
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+ // This will always receive a 1328 packet size (PacketSize + RtpHeaderSize)
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+ // The RTP header will be stripped so see how many reads we need to make to fill the buffer.
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+ int numReads = count / PacketSize;
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+ int totalBytesRead = 0;
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+
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+ for (int i = 0; i < numReads; ++i)
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+ {
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+ var data = await _udpClient.ReceiveAsync(cancellationToken).ConfigureAwait(false);
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+
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+ var bytesRead = data.ReceivedBytes - RtpHeaderBytes;
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+
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+ // remove rtp header
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+ Buffer.BlockCopy(data.Buffer, RtpHeaderBytes, buffer, offset, bytesRead);
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+ offset += bytesRead;
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+ totalBytesRead += bytesRead;
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+ }
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+ return totalBytesRead;
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+ }
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+
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+ protected override void Dispose(bool disposing)
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+ {
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+ disposed = true;
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+ }
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+
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+ public override bool CanRead
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+ {
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+ get
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+ {
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+ throw new NotImplementedException();
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+ }
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+ }
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+
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+ public override bool CanSeek
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+ {
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+ get
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+ {
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+ throw new NotImplementedException();
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+ }
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+ }
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+
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+ public override bool CanWrite
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+ {
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+ get
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+ {
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+ throw new NotImplementedException();
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+ }
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+ }
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+
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+ public override long Length
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+ {
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+ get
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+ {
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+ throw new NotImplementedException();
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+ }
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+ }
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+
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+ public override long Position
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+ {
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+ get
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+ {
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+ throw new NotImplementedException();
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+ }
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+
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+ set
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+ {
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+ throw new NotImplementedException();
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+ }
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+ }
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+
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+ public override void Flush()
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+ {
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+ throw new NotImplementedException();
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+ }
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+
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+ public override int Read(byte[] buffer, int offset, int count)
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+ {
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+ throw new NotImplementedException();
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+ }
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+
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+ public override long Seek(long offset, SeekOrigin origin)
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+ {
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+ throw new NotImplementedException();
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+ }
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+
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+ public override void SetLength(long value)
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+ {
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+ throw new NotImplementedException();
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+ }
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+
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+ public override void Write(byte[] buffer, int offset, int count)
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+ {
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+ throw new NotImplementedException();
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+ }
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+ }
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+}
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Luke Pulverenti