update hdhr udp stream

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

@@ -510,7 +510,7 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun
             // The UDP method is not working reliably on OSX, and on BSD it hasn't been tested yet
             var enableHttpStream = _environment.OperatingSystem == OperatingSystem.OSX ||
                 _environment.OperatingSystem == OperatingSystem.BSD;
-
+            enableHttpStream = true;
             if (enableHttpStream)
             {
                 mediaSource.Protocol = MediaProtocol.Http;

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

@@ -130,7 +130,7 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun
                                         onStarted = () => openTaskCompletionSource.TrySetResult(true);
                                     }
 
-                                    await _multicastStream.CopyUntilCancelled(udpClient, onStarted, cancellationToken).ConfigureAwait(false);
+                                    await _multicastStream.CopyUntilCancelled(new UdpClientStream(udpClient), onStarted, cancellationToken).ConfigureAwait(false);
                                 }
                             }
                             catch (OperationCanceledException ex)
@@ -167,4 +167,127 @@ namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun
             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<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;
+
+            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();
+        }
+    }
 }