From 0a64609fb8cffa0a40a9b832ae700f607ea34e58 Mon Sep 17 00:00:00 2001 From: Luke Pulverenti Date: Thu, 2 Mar 2017 16:32:20 -0500 Subject: [PATCH] stub out legacy live stream --- .../Emby.Server.Implementations.csproj | 1 + .../HdHomerun/LegacyHdHomerunLiveStream.cs | 289 ++++++++++++++++++ 2 files changed, 290 insertions(+) create mode 100644 Emby.Server.Implementations/LiveTv/TunerHosts/HdHomerun/LegacyHdHomerunLiveStream.cs diff --git a/Emby.Server.Implementations/Emby.Server.Implementations.csproj b/Emby.Server.Implementations/Emby.Server.Implementations.csproj index 86084a1141..32954da35f 100644 --- a/Emby.Server.Implementations/Emby.Server.Implementations.csproj +++ b/Emby.Server.Implementations/Emby.Server.Implementations.csproj @@ -173,6 +173,7 @@ + diff --git a/Emby.Server.Implementations/LiveTv/TunerHosts/HdHomerun/LegacyHdHomerunLiveStream.cs b/Emby.Server.Implementations/LiveTv/TunerHosts/HdHomerun/LegacyHdHomerunLiveStream.cs new file mode 100644 index 0000000000..4bac1e1aa9 --- /dev/null +++ b/Emby.Server.Implementations/LiveTv/TunerHosts/HdHomerun/LegacyHdHomerunLiveStream.cs @@ -0,0 +1,289 @@ +using System; +using System.Collections.Generic; +using System.IO; +using System.Linq; +using System.Text; +using System.Threading; +using System.Threading.Tasks; +using MediaBrowser.Common.Net; +using MediaBrowser.Controller; +using MediaBrowser.Controller.Library; +using MediaBrowser.Controller.LiveTv; +using MediaBrowser.Model.Dto; +using MediaBrowser.Model.IO; +using MediaBrowser.Model.Logging; +using MediaBrowser.Model.MediaInfo; +using MediaBrowser.Model.Net; + +namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun +{ + public class LegacyHdHomerunLiveStream : LiveStream, IDirectStreamProvider + { + private readonly ILogger _logger; + private readonly IHttpClient _httpClient; + private readonly IFileSystem _fileSystem; + private readonly IServerApplicationPaths _appPaths; + private readonly IServerApplicationHost _appHost; + private readonly ISocketFactory _socketFactory; + + private readonly CancellationTokenSource _liveStreamCancellationTokenSource = new CancellationTokenSource(); + private readonly TaskCompletionSource _liveStreamTaskCompletionSource = new TaskCompletionSource(); + private readonly MulticastStream _multicastStream; + private readonly string _channelUrl; + private readonly int _numTuners; + + public LegacyHdHomerunLiveStream(MediaSourceInfo mediaSource, string originalStreamId, string channelUrl, int numTuners, IFileSystem fileSystem, IHttpClient httpClient, ILogger logger, IServerApplicationPaths appPaths, IServerApplicationHost appHost, ISocketFactory socketFactory) + : base(mediaSource) + { + _fileSystem = fileSystem; + _httpClient = httpClient; + _logger = logger; + _appPaths = appPaths; + _appHost = appHost; + _socketFactory = socketFactory; + OriginalStreamId = originalStreamId; + _multicastStream = new MulticastStream(_logger); + _channelUrl = channelUrl; + _numTuners = numTuners; + } + + protected override async Task OpenInternal(CancellationToken openCancellationToken) + { + _liveStreamCancellationTokenSource.Token.ThrowIfCancellationRequested(); + + var mediaSource = OriginalMediaSource; + + var splitString = mediaSource.Path.Split('_'); + var remoteIp = splitString[0]; + var localPort = Convert.ToInt32(splitString[1]); + + _logger.Info("Opening Legacy HDHR Live stream from {0}", remoteIp); + + var taskCompletionSource = new TaskCompletionSource(); + + StartStreaming(remoteIp, localPort, taskCompletionSource, _liveStreamCancellationTokenSource.Token); + + //OpenedMediaSource.Protocol = MediaProtocol.File; + //OpenedMediaSource.Path = tempFile; + //OpenedMediaSource.ReadAtNativeFramerate = true; + + OpenedMediaSource.Path = _appHost.GetLocalApiUrl("127.0.0.1") + "/LiveTv/LiveStreamFiles/" + UniqueId + "/stream.ts"; + OpenedMediaSource.Protocol = MediaProtocol.Http; + OpenedMediaSource.SupportsDirectPlay = false; + OpenedMediaSource.SupportsDirectStream = true; + OpenedMediaSource.SupportsTranscoding = true; + + await taskCompletionSource.Task.ConfigureAwait(false); + + //await Task.Delay(5000).ConfigureAwait(false); + } + + public override Task Close() + { + _logger.Info("Closing Legacy HDHR live stream"); + _liveStreamCancellationTokenSource.Cancel(); + + return _liveStreamTaskCompletionSource.Task; + } + + private async Task StartStreaming(string remoteIp, int localPort, TaskCompletionSource openTaskCompletionSource, CancellationToken cancellationToken) + { + //await Task.Run(async () => + //{ + // var isFirstAttempt = true; + // var udpClient = _socketFactory.CreateUdpSocket(localPort); + // using (var legCommand = new HdHomerunManager(_socketFactory)) + // { + // var remoteAddress = new IpAddressInfo(remoteIp, IpAddressFamily.InterNetwork); + // IpAddressInfo localAddress = null; + // var tcpSocket = _socketFactory.CreateSocket(IpAddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp, false); + // try + // { + // tcpSocket.Connect(new IpEndPointInfo(remoteAddress, LegacyHdHomerunCommand.HdHomeRunPort)); + // localAddress = tcpSocket.LocalEndPoint.IpAddress; + // tcpSocket.Close(); + // } + // catch (Exception) + // { + // _logger.Error("Unable to determine local ip address for Legacy HDHomerun stream."); + // return; + // } + + // while (!cancellationToken.IsCancellationRequested) + // { + // try + // { + // // send url to start streaming + // await legCommand.StartStreaming(remoteAddress, localAddress, localPort, _channelUrl, _numTuners, cancellationToken).ConfigureAwait(false); + + // var response = await udpClient.ReceiveAsync(cancellationToken).ConfigureAwait(false); + // _logger.Info("Opened Legacy HDHR stream from {0}", _channelUrl); + + // if (!cancellationToken.IsCancellationRequested) + // { + // Action onStarted = null; + // if (isFirstAttempt) + // { + // onStarted = () => openTaskCompletionSource.TrySetResult(true); + // } + + // var stream = new UdpClientStream(udpClient); + // await _multicastStream.CopyUntilCancelled(stream, onStarted, cancellationToken).ConfigureAwait(false); + // } + // } + // catch (OperationCanceledException) + // { + // break; + // } + // catch (Exception ex) + // { + // if (isFirstAttempt) + // { + // _logger.ErrorException("Error opening live stream:", ex); + // openTaskCompletionSource.TrySetException(ex); + // break; + // } + + // _logger.ErrorException("Error copying live stream, will reopen", ex); + // } + + // isFirstAttempt = false; + // } + + // await legCommand.StopStreaming().ConfigureAwait(false); + // udpClient.Dispose(); + // _liveStreamTaskCompletionSource.TrySetResult(true); + // } + + //}).ConfigureAwait(false); + } + + public Task CopyToAsync(Stream stream, CancellationToken cancellationToken) + { + return _multicastStream.CopyToAsync(stream); + } + } + + // This handles the ReadAsync function only of a Stream object + // This is used to wrap a UDP socket into a stream for MulticastStream which only uses ReadAsync + public class UdpClientStream : Stream + { + private static int RtpHeaderBytes = 12; + private static int PacketSize = 1316; + private readonly ISocket _udpClient; + bool disposed; + + public UdpClientStream(ISocket udpClient) : base() + { + _udpClient = udpClient; + } + + public override async Task ReadAsync(byte[] buffer, int offset, int count, CancellationToken cancellationToken) + { + if (buffer == null) + throw new ArgumentNullException("buffer"); + + if (offset + count < 0) + throw new ArgumentOutOfRangeException("offset + count must not be negative", "offset+count"); + + if (offset + count > buffer.Length) + throw new ArgumentException("offset + count must not be greater than the length of buffer", "offset+count"); + + if (disposed) + throw new ObjectDisposedException(typeof(UdpClientStream).ToString()); + + // This will always receive a 1328 packet size (PacketSize + RtpHeaderSize) + // The RTP header will be stripped so see how many reads we need to make to fill the buffer. + int numReads = count / PacketSize; + int totalBytesRead = 0; + + for (int i = 0; i < numReads; ++i) + { + var data = await _udpClient.ReceiveAsync(cancellationToken).ConfigureAwait(false); + + var bytesRead = data.ReceivedBytes - RtpHeaderBytes; + + // remove rtp header + Buffer.BlockCopy(data.Buffer, RtpHeaderBytes, buffer, offset, bytesRead); + offset += bytesRead; + totalBytesRead += bytesRead; + } + return totalBytesRead; + } + + protected override void Dispose(bool disposing) + { + disposed = true; + } + + public override bool CanRead + { + get + { + throw new NotImplementedException(); + } + } + + public override bool CanSeek + { + get + { + throw new NotImplementedException(); + } + } + + public override bool CanWrite + { + get + { + throw new NotImplementedException(); + } + } + + public override long Length + { + get + { + throw new NotImplementedException(); + } + } + + public override long Position + { + get + { + throw new NotImplementedException(); + } + + set + { + throw new NotImplementedException(); + } + } + + public override void Flush() + { + throw new NotImplementedException(); + } + + public override int Read(byte[] buffer, int offset, int count) + { + throw new NotImplementedException(); + } + + public override long Seek(long offset, SeekOrigin origin) + { + throw new NotImplementedException(); + } + + public override void SetLength(long value) + { + throw new NotImplementedException(); + } + + public override void Write(byte[] buffer, int offset, int count) + { + throw new NotImplementedException(); + } + } +}