Merge pull request #2684 from MediaBrowser/dev

Dev

Emby.Common.Implementations/Net/UdpSocket.cs

@@ -128,6 +128,11 @@ namespace Emby.Common.Implementations.Net
             return _Socket.BeginReceiveFrom(buffer, offset, count, SocketFlags.None, ref receivedFromEndPoint, callback, buffer);
         }
 
+        public int Receive(byte[] buffer, int offset, int count)
+        {
+            return _Socket.Receive(buffer, 0, buffer.Length, SocketFlags.None);
+        }
+
         public SocketReceiveResult EndReceive(IAsyncResult result)
         {
             IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);

Emby.Server.Implementations/LiveTv/EmbyTV/DirectRecorder.cs

@@ -94,17 +94,13 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
         }
 
         private const int BufferSize = 81920;
-        public static Task CopyUntilCancelled(Stream source, Stream target, CancellationToken cancellationToken)
-        {
-            return CopyUntilCancelled(source, target, null, cancellationToken);
-        }
-        public static async Task CopyUntilCancelled(Stream source, Stream target, Action onStarted, CancellationToken cancellationToken)
+        public static async Task CopyUntilCancelled(Stream source, Stream target, CancellationToken cancellationToken)
         {
+            byte[] buffer = new byte[BufferSize];
+
             while (!cancellationToken.IsCancellationRequested)
             {
-                var bytesRead = await CopyToAsyncInternal(source, target, BufferSize, onStarted, cancellationToken).ConfigureAwait(false);
-
-                onStarted = null;
+                var bytesRead = await CopyToAsyncInternal(source, target, buffer, cancellationToken).ConfigureAwait(false);
 
                 //var position = fs.Position;
                 //_logger.Debug("Streamed {0} bytes to position {1} from file {2}", bytesRead, position, path);
@@ -116,23 +112,16 @@ namespace Emby.Server.Implementations.LiveTv.EmbyTV
             }
         }
 
-        private static async Task<int> CopyToAsyncInternal(Stream source, Stream destination, Int32 bufferSize, Action onStarted, CancellationToken cancellationToken)
+        private static async Task<int> CopyToAsyncInternal(Stream source, Stream destination, byte[] buffer, CancellationToken cancellationToken)
         {
-            byte[] buffer = new byte[bufferSize];
             int bytesRead;
             int totalBytesRead = 0;
 
             while ((bytesRead = await source.ReadAsync(buffer, 0, buffer.Length, cancellationToken).ConfigureAwait(false)) != 0)
             {
-                await destination.WriteAsync(buffer, 0, bytesRead, cancellationToken).ConfigureAwait(false);
+                destination.Write(buffer, 0, bytesRead);
 
                 totalBytesRead += bytesRead;
-
-                if (onStarted != null)
-                {
-                    onStarted();
-                }
-                onStarted = null;
             }
 
             return totalBytesRead;

Emby.Server.Implementations/LiveTv/TunerHosts/HdHomerun/HdHomerunHttpStream.cs

@@ -26,7 +26,10 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun
         private readonly CancellationTokenSource _liveStreamCancellationTokenSource = new CancellationTokenSource();
         private readonly TaskCompletionSource<bool> _liveStreamTaskCompletionSource = new TaskCompletionSource<bool>();
 
+        private readonly MulticastStream _multicastStream;
+
         private readonly string _tempFilePath;
+        private bool _enableFileBuffer = false;
 
         public HdHomerunHttpStream(MediaSourceInfo mediaSource, string originalStreamId, IFileSystem fileSystem, IHttpClient httpClient, ILogger logger, IServerApplicationPaths appPaths, IServerApplicationHost appHost, IEnvironmentInfo environment)
             : base(mediaSource, environment, fileSystem)
@@ -36,6 +39,7 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun
             _appHost = appHost;
             OriginalStreamId = originalStreamId;
 
+            _multicastStream = new MulticastStream(_logger);
             _tempFilePath = Path.Combine(appPaths.TranscodingTempPath, UniqueId + ".ts");
         }
 
@@ -103,13 +107,17 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun
                             {
                                 _logger.Info("Beginning multicastStream.CopyUntilCancelled");
 
-                                FileSystem.CreateDirectory(FileSystem.GetDirectoryName(_tempFilePath));
-                                using (var fileStream = FileSystem.GetFileStream(_tempFilePath, FileOpenMode.Create, FileAccessMode.Write, FileShareMode.Read, FileOpenOptions.None))
+                                if (_enableFileBuffer)
                                 {
-                                    //await response.Content.CopyToAsync(fileStream, 81920, cancellationToken).ConfigureAwait(false);
-                                    StreamHelper.CopyTo(response.Content, fileStream, 81920, () => Resolve(openTaskCompletionSource), cancellationToken);
-
-                                    //await AsyncStreamCopier.CopyStream(response.Content, fileStream, 81920, 4, cancellationToken).ConfigureAwait(false);
+                                    FileSystem.CreateDirectory(FileSystem.GetDirectoryName(_tempFilePath));
+                                    using (var fileStream = FileSystem.GetFileStream(_tempFilePath, FileOpenMode.Create, FileAccessMode.Write, FileShareMode.Read, FileOpenOptions.None))
+                                    {
+                                        StreamHelper.CopyTo(response.Content, fileStream, 81920, () => Resolve(openTaskCompletionSource), cancellationToken);
+                                    }
+                                }
+                                else
+                                {
+                                    await _multicastStream.CopyUntilCancelled(response.Content, () => Resolve(openTaskCompletionSource), cancellationToken).ConfigureAwait(false);
                                 }
                             }
                         }
@@ -134,7 +142,7 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun
                 }
 
                 _liveStreamTaskCompletionSource.TrySetResult(true);
-                await DeleteTempFile(_tempFilePath).ConfigureAwait(false);
+                //await DeleteTempFile(_tempFilePath).ConfigureAwait(false);
             });
         }
 
@@ -148,7 +156,12 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun
 
         public Task CopyToAsync(Stream stream, CancellationToken cancellationToken)
         {
-            return CopyFileTo(_tempFilePath, stream, cancellationToken);
+            if (_enableFileBuffer)
+            {
+                return CopyFileTo(_tempFilePath, stream, cancellationToken);
+            }
+            return _multicastStream.CopyToAsync(stream, cancellationToken);
+            //return CopyFileTo(_tempFilePath, stream, cancellationToken);
         }
 
         protected async Task CopyFileTo(string path, Stream outputStream, CancellationToken cancellationToken)

Emby.Server.Implementations/LiveTv/TunerHosts/HdHomerun/HdHomerunUdpStream.cs

@@ -34,6 +34,8 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun
         private readonly INetworkManager _networkManager;
 
         private readonly string _tempFilePath;
+        private bool _enableFileBuffer = false;
+        private readonly MulticastStream _multicastStream;
 
         public HdHomerunUdpStream(MediaSourceInfo mediaSource, string originalStreamId, IHdHomerunChannelCommands channelCommands, int numTuners, IFileSystem fileSystem, IHttpClient httpClient, ILogger logger, IServerApplicationPaths appPaths, IServerApplicationHost appHost, ISocketFactory socketFactory, INetworkManager networkManager, IEnvironmentInfo environment)
             : base(mediaSource, environment, fileSystem)
@@ -46,6 +48,7 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun
             _channelCommands = channelCommands;
             _numTuners = numTuners;
             _tempFilePath = Path.Combine(appPaths.TranscodingTempPath, UniqueId + ".ts");
+            _multicastStream = new MulticastStream(_logger);
         }
 
         protected override async Task OpenInternal(CancellationToken openCancellationToken)
@@ -123,10 +126,17 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun
 
                                 if (!cancellationToken.IsCancellationRequested)
                                 {
-                                    FileSystem.CreateDirectory(FileSystem.GetDirectoryName(_tempFilePath));
-                                    using (var fileStream = FileSystem.GetFileStream(_tempFilePath, FileOpenMode.Create, FileAccessMode.Write, FileShareMode.Read, FileOpenOptions.None))
+                                    if (_enableFileBuffer)
                                     {
-                                        CopyTo(udpClient, fileStream, openTaskCompletionSource, cancellationToken);
+                                        FileSystem.CreateDirectory(FileSystem.GetDirectoryName(_tempFilePath));
+                                        using (var fileStream = FileSystem.GetFileStream(_tempFilePath, FileOpenMode.Create, FileAccessMode.Write, FileShareMode.Read, FileOpenOptions.None))
+                                        {
+                                            CopyTo(udpClient, fileStream, openTaskCompletionSource, cancellationToken);
+                                        }
+                                    }
+                                    else
+                                    {
+                                        await _multicastStream.CopyUntilCancelled(new UdpClientStream(udpClient), () => Resolve(openTaskCompletionSource), cancellationToken).ConfigureAwait(false);
                                     }
                                 }
                             }
@@ -170,6 +180,12 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun
 
         public async Task CopyToAsync(Stream outputStream, CancellationToken cancellationToken)
         {
+            if (!_enableFileBuffer)
+            {
+                await _multicastStream.CopyToAsync(outputStream, cancellationToken).ConfigureAwait(false);
+                return;
+            }
+
             var path = _tempFilePath;
 
             long startPosition = -20000;
@@ -285,5 +301,155 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun
             }
         }
 
+        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<int> 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;
+                byte[] receiveBuffer = new byte[81920];
+
+                for (int i = 0; i < numReads; ++i)
+                {
+                    var data = await _udpClient.ReceiveAsync(receiveBuffer, 0, receiveBuffer.Length, 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;
+            }
+
+            public override int Read(byte[] buffer, int offset, int count)
+            {
+                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;
+                byte[] receiveBuffer = new byte[81920];
+
+                for (int i = 0; i < numReads; ++i)
+                {
+                    var receivedBytes = _udpClient.Receive(receiveBuffer, 0, receiveBuffer.Length);
+
+                    var bytesRead = receivedBytes - RtpHeaderBytes;
+
+                    // remove rtp header
+                    Buffer.BlockCopy(receiveBuffer, 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 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();
+            }
+        }
     }
 }

Emby.Server.Implementations/LiveTv/TunerHosts/MulticastStream.cs

@@ -13,7 +13,7 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts
 {
     public class MulticastStream
     {
-        private readonly ConcurrentDictionary<Guid,QueueStream> _outputStreams = new ConcurrentDictionary<Guid, QueueStream>();
+        private readonly ConcurrentDictionary<Guid, QueueStream> _outputStreams = new ConcurrentDictionary<Guid, QueueStream>();
         private const int BufferSize = 81920;
         private readonly ILogger _logger;
 
@@ -31,9 +31,11 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts
                 throw new ArgumentNullException("source");
             }
 
-            while (!cancellationToken.IsCancellationRequested)
+            while (true)
             {
-                var bytesRead = await source.ReadAsync(buffer, 0, buffer.Length, cancellationToken).ConfigureAwait(false);
+                cancellationToken.ThrowIfCancellationRequested();
+
+                var bytesRead = source.Read(buffer, 0, buffer.Length);
 
                 if (bytesRead > 0)
                 {
@@ -41,7 +43,7 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts
 
                     //if (allStreams.Count == 1)
                     //{
-                    //    await allStreams[0].Value.WriteAsync(buffer, 0, bytesRead).ConfigureAwait(false);
+                    //    allStreams[0].Value.Write(buffer, 0, bytesRead);
                     //}
                     //else
                     {

Emby.Server.Implementations/LiveTv/TunerHosts/QueueStream.cs

@@ -14,7 +14,6 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts
     {
         private readonly Stream _outputStream;
         private readonly ConcurrentQueue<Tuple<byte[], int, int>> _queue = new ConcurrentQueue<Tuple<byte[], int, int>>();
-        private CancellationToken _cancellationToken;
         public TaskCompletionSource<bool> TaskCompletion { get; private set; }
 
         public Action<QueueStream> OnFinished { get; set; }
@@ -35,8 +34,7 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts
 
         public void Start(CancellationToken cancellationToken)
         {
-            _cancellationToken = cancellationToken;
-            Task.Run(() => StartInternal());
+            Task.Run(() => StartInternal(cancellationToken));
         }
 
         private Tuple<byte[], int, int> Dequeue()
@@ -59,14 +57,13 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts
             }
         }
 
-        public async Task WriteAsync(byte[] bytes, int offset, int count)
+        public void Write(byte[] bytes, int offset, int count)
         {
             //return _outputStream.WriteAsync(bytes, offset, count, cancellationToken);
-            var cancellationToken = _cancellationToken;
 
             try
             {
-                await _outputStream.WriteAsync(bytes, offset, count, cancellationToken).ConfigureAwait(false);
+                _outputStream.Write(bytes, offset, count);
             }
             catch (OperationCanceledException)
             {
@@ -82,18 +79,18 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts
             }
         }
 
-        private async Task StartInternal()
+        private async Task StartInternal(CancellationToken cancellationToken)
         {
-            var cancellationToken = _cancellationToken;
-
             try
             {
                 while (true)
                 {
+                    cancellationToken.ThrowIfCancellationRequested();
+
                     var result = Dequeue();
                     if (result != null)
                     {
-                        await _outputStream.WriteAsync(result.Item1, result.Item2, result.Item3, cancellationToken).ConfigureAwait(false);
+                        _outputStream.Write(result.Item1, result.Item2, result.Item3);
                     }
                     else
                     {

MediaBrowser.Model/Net/ISocket.cs

@@ -16,6 +16,8 @@ namespace MediaBrowser.Model.Net
 
         Task<SocketReceiveResult> ReceiveAsync(byte[] buffer, int offset, int count, CancellationToken cancellationToken);
 
+        int Receive(byte[] buffer, int offset, int count);
+
         IAsyncResult BeginReceive(byte[] buffer, int offset, int count, AsyncCallback callback);
         SocketReceiveResult EndReceive(IAsyncResult result);