mirror of
https://github.com/jellyfin/jellyfin.git
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191 lines
7.5 KiB
C#
191 lines
7.5 KiB
C#
using System;
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using System.IO;
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using System.Threading;
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using System.Threading.Tasks;
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using Emby.Server.Implementations.IO;
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using MediaBrowser.Model.IO;
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using MediaBrowser.Common.Net;
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using MediaBrowser.Controller;
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using MediaBrowser.Controller.LiveTv;
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using MediaBrowser.Controller.Library;
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using MediaBrowser.Model.Dto;
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using MediaBrowser.Model.Logging;
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using MediaBrowser.Model.MediaInfo;
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using MediaBrowser.Model.System;
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namespace Emby.Server.Implementations.LiveTv.TunerHosts.HdHomerun
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{
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public class HdHomerunHttpStream : 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 IServerApplicationHost _appHost;
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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 string _tempFilePath;
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public HdHomerunHttpStream(MediaSourceInfo mediaSource, string originalStreamId, IFileSystem fileSystem, IHttpClient httpClient, ILogger logger, IServerApplicationPaths appPaths, IServerApplicationHost appHost, IEnvironmentInfo environment)
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: base(mediaSource, environment, fileSystem)
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{
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_httpClient = httpClient;
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_logger = logger;
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_appHost = appHost;
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OriginalStreamId = originalStreamId;
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_tempFilePath = Path.Combine(appPaths.TranscodingTempPath, UniqueId + ".ts");
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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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var mediaSource = OriginalMediaSource;
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var url = mediaSource.Path;
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_logger.Info("Opening HDHR Live stream from {0}", url);
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var taskCompletionSource = new TaskCompletionSource<bool>();
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StartStreaming(url, taskCompletionSource, _liveStreamCancellationTokenSource.Token);
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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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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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await taskCompletionSource.Task.ConfigureAwait(false);
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//await Task.Delay(5000).ConfigureAwait(false);
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}
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public override Task Close()
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{
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_logger.Info("Closing HDHR live stream");
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_liveStreamCancellationTokenSource.Cancel();
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return _liveStreamTaskCompletionSource.Task;
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}
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private Task StartStreaming(string url, TaskCompletionSource<bool> openTaskCompletionSource, CancellationToken cancellationToken)
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{
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return Task.Run(async () =>
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{
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var isFirstAttempt = true;
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while (!cancellationToken.IsCancellationRequested)
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{
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try
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{
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using (var response = await _httpClient.SendAsync(new HttpRequestOptions
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{
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Url = url,
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CancellationToken = cancellationToken,
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BufferContent = false,
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// Increase a little bit
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TimeoutMs = 30000
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}, "GET").ConfigureAwait(false))
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{
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_logger.Info("Opened HDHR stream from {0}", url);
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if (!cancellationToken.IsCancellationRequested)
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{
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_logger.Info("Beginning multicastStream.CopyUntilCancelled");
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FileSystem.CreateDirectory(FileSystem.GetDirectoryName(_tempFilePath));
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using (var fileStream = FileSystem.GetFileStream(_tempFilePath, FileOpenMode.Create, FileAccessMode.Write, FileShareMode.Read, FileOpenOptions.Asynchronous))
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{
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ResolveAfterDelay(3000, openTaskCompletionSource);
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//await response.Content.CopyToAsync(fileStream, 81920, cancellationToken).ConfigureAwait(false);
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await AsyncStreamCopier.CopyStream(response.Content, fileStream, 81920, 4, cancellationToken).ConfigureAwait(false);
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}
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}
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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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_logger.ErrorException("Error copying live stream, will reopen", ex);
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}
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isFirstAttempt = false;
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}
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_liveStreamTaskCompletionSource.TrySetResult(true);
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await DeleteTempFile(_tempFilePath).ConfigureAwait(false);
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});
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}
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private void ResolveAfterDelay(int delayMs, TaskCompletionSource<bool> openTaskCompletionSource)
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{
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Task.Run(async () =>
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{
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await Task.Delay(delayMs).ConfigureAwait(false);
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openTaskCompletionSource.TrySetResult(true);
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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 CopyFileTo(_tempFilePath, false, stream, cancellationToken);
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}
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protected async Task CopyFileTo(string path, bool allowEndOfFile, Stream outputStream, CancellationToken cancellationToken)
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{
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var eofCount = 0;
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long startPosition = -25000;
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if (startPosition < 0)
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{
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var length = FileSystem.GetFileInfo(path).Length;
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startPosition = Math.Max(length - startPosition, 0);
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}
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using (var inputStream = GetInputStream(path, startPosition, true))
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{
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if (startPosition > 0)
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{
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inputStream.Position = startPosition;
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}
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while (eofCount < 20 || !allowEndOfFile)
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{
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var bytesRead = await AsyncStreamCopier.CopyStream(inputStream, outputStream, 81920, 4, cancellationToken).ConfigureAwait(false);
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//var position = fs.Position;
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//_logger.Debug("Streamed {0} bytes to position {1} from file {2}", bytesRead, position, path);
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if (bytesRead == 0)
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{
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eofCount++;
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await Task.Delay(100, cancellationToken).ConfigureAwait(false);
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}
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else
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{
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eofCount = 0;
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}
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}
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}
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}
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}
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}
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