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751 lines
27 KiB
751 lines
27 KiB
using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Globalization;
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using System.IO;
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using System.Linq;
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using System.Runtime.CompilerServices;
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using System.Text;
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using System.Text.Json;
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using System.Threading;
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using System.Threading.Tasks;
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using AsyncKeyedLock;
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using Jellyfin.Data.Enums;
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using Jellyfin.Extensions;
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using MediaBrowser.Common;
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using MediaBrowser.Common.Configuration;
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using MediaBrowser.Common.Extensions;
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using MediaBrowser.Controller.Configuration;
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using MediaBrowser.Controller.Library;
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using MediaBrowser.Controller.MediaEncoding;
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using MediaBrowser.Controller.Session;
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using MediaBrowser.Controller.Streaming;
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using MediaBrowser.Model.Dlna;
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using MediaBrowser.Model.Entities;
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using MediaBrowser.Model.IO;
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using MediaBrowser.Model.MediaInfo;
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using MediaBrowser.Model.Session;
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using Microsoft.Extensions.Logging;
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namespace MediaBrowser.MediaEncoding.Transcoding;
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/// <inheritdoc cref="ITranscodeManager"/>
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public sealed class TranscodeManager : ITranscodeManager, IDisposable
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{
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private readonly ILoggerFactory _loggerFactory;
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private readonly ILogger<TranscodeManager> _logger;
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private readonly IFileSystem _fileSystem;
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private readonly IApplicationPaths _appPaths;
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private readonly IServerConfigurationManager _serverConfigurationManager;
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private readonly IUserManager _userManager;
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private readonly ISessionManager _sessionManager;
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private readonly EncodingHelper _encodingHelper;
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private readonly IMediaEncoder _mediaEncoder;
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private readonly IMediaSourceManager _mediaSourceManager;
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private readonly IAttachmentExtractor _attachmentExtractor;
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private readonly List<TranscodingJob> _activeTranscodingJobs = new();
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private readonly AsyncKeyedLocker<string> _transcodingLocks = new(o =>
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{
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o.PoolSize = 20;
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o.PoolInitialFill = 1;
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});
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/// <summary>
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/// Initializes a new instance of the <see cref="TranscodeManager"/> class.
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/// </summary>
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/// <param name="loggerFactory">The <see cref="ILoggerFactory"/>.</param>
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/// <param name="fileSystem">The <see cref="IFileSystem"/>.</param>
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/// <param name="appPaths">The <see cref="IApplicationPaths"/>.</param>
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/// <param name="serverConfigurationManager">The <see cref="IServerConfigurationManager"/>.</param>
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/// <param name="userManager">The <see cref="IUserManager"/>.</param>
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/// <param name="sessionManager">The <see cref="ISessionManager"/>.</param>
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/// <param name="encodingHelper">The <see cref="EncodingHelper"/>.</param>
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/// <param name="mediaEncoder">The <see cref="IMediaEncoder"/>.</param>
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/// <param name="mediaSourceManager">The <see cref="IMediaSourceManager"/>.</param>
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/// <param name="attachmentExtractor">The <see cref="IAttachmentExtractor"/>.</param>
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public TranscodeManager(
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ILoggerFactory loggerFactory,
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IFileSystem fileSystem,
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IApplicationPaths appPaths,
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IServerConfigurationManager serverConfigurationManager,
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IUserManager userManager,
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ISessionManager sessionManager,
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EncodingHelper encodingHelper,
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IMediaEncoder mediaEncoder,
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IMediaSourceManager mediaSourceManager,
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IAttachmentExtractor attachmentExtractor)
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{
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_loggerFactory = loggerFactory;
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_fileSystem = fileSystem;
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_appPaths = appPaths;
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_serverConfigurationManager = serverConfigurationManager;
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_userManager = userManager;
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_sessionManager = sessionManager;
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_encodingHelper = encodingHelper;
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_mediaEncoder = mediaEncoder;
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_mediaSourceManager = mediaSourceManager;
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_attachmentExtractor = attachmentExtractor;
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_logger = loggerFactory.CreateLogger<TranscodeManager>();
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DeleteEncodedMediaCache();
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_sessionManager.PlaybackProgress += OnPlaybackProgress;
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_sessionManager.PlaybackStart += OnPlaybackProgress;
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}
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/// <inheritdoc />
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public TranscodingJob? GetTranscodingJob(string playSessionId)
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{
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lock (_activeTranscodingJobs)
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{
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return _activeTranscodingJobs.FirstOrDefault(j => string.Equals(j.PlaySessionId, playSessionId, StringComparison.OrdinalIgnoreCase));
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}
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}
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/// <inheritdoc />
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public TranscodingJob? GetTranscodingJob(string path, TranscodingJobType type)
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{
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lock (_activeTranscodingJobs)
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{
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return _activeTranscodingJobs.FirstOrDefault(j => j.Type == type && string.Equals(j.Path, path, StringComparison.OrdinalIgnoreCase));
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}
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}
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/// <inheritdoc />
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public void PingTranscodingJob(string playSessionId, bool? isUserPaused)
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{
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ArgumentException.ThrowIfNullOrEmpty(playSessionId);
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_logger.LogDebug("PingTranscodingJob PlaySessionId={0} isUsedPaused: {1}", playSessionId, isUserPaused);
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List<TranscodingJob> jobs;
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lock (_activeTranscodingJobs)
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{
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// This is really only needed for HLS.
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// Progressive streams can stop on their own reliably.
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jobs = _activeTranscodingJobs.Where(j => string.Equals(playSessionId, j.PlaySessionId, StringComparison.OrdinalIgnoreCase)).ToList();
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}
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foreach (var job in jobs)
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{
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if (isUserPaused.HasValue)
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{
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_logger.LogDebug("Setting job.IsUserPaused to {0}. jobId: {1}", isUserPaused, job.Id);
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job.IsUserPaused = isUserPaused.Value;
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}
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PingTimer(job, true);
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}
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}
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private void PingTimer(TranscodingJob job, bool isProgressCheckIn)
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{
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if (job.HasExited)
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{
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job.StopKillTimer();
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return;
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}
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var timerDuration = 10000;
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if (job.Type != TranscodingJobType.Progressive)
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{
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timerDuration = 60000;
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}
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job.PingTimeout = timerDuration;
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job.LastPingDate = DateTime.UtcNow;
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// Don't start the timer for playback checkins with progressive streaming
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if (job.Type != TranscodingJobType.Progressive || !isProgressCheckIn)
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{
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job.StartKillTimer(OnTranscodeKillTimerStopped);
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}
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else
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{
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job.ChangeKillTimerIfStarted();
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}
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}
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private async void OnTranscodeKillTimerStopped(object? state)
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{
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var job = state as TranscodingJob ?? throw new ArgumentException($"{nameof(state)} is not of type {nameof(TranscodingJob)}", nameof(state));
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if (!job.HasExited && job.Type != TranscodingJobType.Progressive)
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{
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var timeSinceLastPing = (DateTime.UtcNow - job.LastPingDate).TotalMilliseconds;
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if (timeSinceLastPing < job.PingTimeout)
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{
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job.StartKillTimer(OnTranscodeKillTimerStopped, job.PingTimeout);
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return;
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}
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}
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_logger.LogInformation("Transcoding kill timer stopped for JobId {0} PlaySessionId {1}. Killing transcoding", job.Id, job.PlaySessionId);
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await KillTranscodingJob(job, true, path => true).ConfigureAwait(false);
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}
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/// <inheritdoc />
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public Task KillTranscodingJobs(string deviceId, string? playSessionId, Func<string, bool> deleteFiles)
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{
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var jobs = new List<TranscodingJob>();
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lock (_activeTranscodingJobs)
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{
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// This is really only needed for HLS.
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// Progressive streams can stop on their own reliably.
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jobs.AddRange(_activeTranscodingJobs.Where(j => string.IsNullOrWhiteSpace(playSessionId)
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? string.Equals(deviceId, j.DeviceId, StringComparison.OrdinalIgnoreCase)
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: string.Equals(playSessionId, j.PlaySessionId, StringComparison.OrdinalIgnoreCase)));
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}
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return Task.WhenAll(GetKillJobs());
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IEnumerable<Task> GetKillJobs()
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{
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foreach (var job in jobs)
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{
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yield return KillTranscodingJob(job, false, deleteFiles);
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}
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}
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}
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private async Task KillTranscodingJob(TranscodingJob job, bool closeLiveStream, Func<string, bool> delete)
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{
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job.DisposeKillTimer();
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_logger.LogDebug("KillTranscodingJob - JobId {0} PlaySessionId {1}. Killing transcoding", job.Id, job.PlaySessionId);
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lock (_activeTranscodingJobs)
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{
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_activeTranscodingJobs.Remove(job);
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if (job.CancellationTokenSource?.IsCancellationRequested == false)
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{
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#pragma warning disable CA1849 // Can't await in lock block
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job.CancellationTokenSource.Cancel();
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#pragma warning restore CA1849
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}
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}
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job.Stop();
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if (delete(job.Path!))
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{
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await DeletePartialStreamFiles(job.Path!, job.Type, 0, 1500).ConfigureAwait(false);
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if (job.MediaSource?.VideoType == VideoType.Dvd || job.MediaSource?.VideoType == VideoType.BluRay)
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{
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var concatFilePath = Path.Join(_serverConfigurationManager.GetTranscodePath(), job.MediaSource.Id + ".concat");
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if (File.Exists(concatFilePath))
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{
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_logger.LogInformation("Deleting ffmpeg concat configuration at {Path}", concatFilePath);
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File.Delete(concatFilePath);
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}
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}
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}
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if (closeLiveStream && !string.IsNullOrWhiteSpace(job.LiveStreamId))
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{
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try
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{
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await _mediaSourceManager.CloseLiveStream(job.LiveStreamId).ConfigureAwait(false);
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}
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catch (Exception ex)
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{
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_logger.LogError(ex, "Error closing live stream for {Path}", job.Path);
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}
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}
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}
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private async Task DeletePartialStreamFiles(string path, TranscodingJobType jobType, int retryCount, int delayMs)
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{
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if (retryCount >= 10)
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{
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return;
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}
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_logger.LogInformation("Deleting partial stream file(s) {Path}", path);
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await Task.Delay(delayMs).ConfigureAwait(false);
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try
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{
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if (jobType == TranscodingJobType.Progressive)
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{
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DeleteProgressivePartialStreamFiles(path);
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}
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else
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{
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DeleteHlsPartialStreamFiles(path);
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}
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}
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catch (IOException ex)
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{
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_logger.LogError(ex, "Error deleting partial stream file(s) {Path}", path);
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await DeletePartialStreamFiles(path, jobType, retryCount + 1, 500).ConfigureAwait(false);
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}
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catch (Exception ex)
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{
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_logger.LogError(ex, "Error deleting partial stream file(s) {Path}", path);
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}
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}
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private void DeleteProgressivePartialStreamFiles(string outputFilePath)
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{
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if (File.Exists(outputFilePath))
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{
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_fileSystem.DeleteFile(outputFilePath);
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}
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}
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private void DeleteHlsPartialStreamFiles(string outputFilePath)
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{
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var directory = Path.GetDirectoryName(outputFilePath)
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?? throw new ArgumentException("Path can't be a root directory.", nameof(outputFilePath));
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var name = Path.GetFileNameWithoutExtension(outputFilePath);
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var filesToDelete = _fileSystem.GetFilePaths(directory)
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.Where(f => f.Contains(name, StringComparison.OrdinalIgnoreCase));
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List<Exception>? exs = null;
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foreach (var file in filesToDelete)
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{
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try
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{
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_logger.LogDebug("Deleting HLS file {0}", file);
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_fileSystem.DeleteFile(file);
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}
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catch (IOException ex)
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{
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(exs ??= new List<Exception>(4)).Add(ex);
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_logger.LogError(ex, "Error deleting HLS file {Path}", file);
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}
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}
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if (exs is not null)
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{
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throw new AggregateException("Error deleting HLS files", exs);
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}
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}
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/// <inheritdoc />
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public void ReportTranscodingProgress(
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TranscodingJob job,
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StreamState state,
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TimeSpan? transcodingPosition,
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float? framerate,
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double? percentComplete,
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long? bytesTranscoded,
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int? bitRate)
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{
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var ticks = transcodingPosition?.Ticks;
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if (job is not null)
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{
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job.Framerate = framerate;
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job.CompletionPercentage = percentComplete;
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job.TranscodingPositionTicks = ticks;
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job.BytesTranscoded = bytesTranscoded;
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job.BitRate = bitRate;
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}
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var deviceId = state.Request.DeviceId;
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if (!string.IsNullOrWhiteSpace(deviceId))
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{
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var audioCodec = state.ActualOutputAudioCodec;
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var videoCodec = state.ActualOutputVideoCodec;
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var hardwareAccelerationTypeString = _serverConfigurationManager.GetEncodingOptions().HardwareAccelerationType;
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HardwareEncodingType? hardwareAccelerationType = null;
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if (Enum.TryParse<HardwareEncodingType>(hardwareAccelerationTypeString, out var parsedHardwareAccelerationType))
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{
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hardwareAccelerationType = parsedHardwareAccelerationType;
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}
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_sessionManager.ReportTranscodingInfo(deviceId, new TranscodingInfo
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{
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Bitrate = bitRate ?? state.TotalOutputBitrate,
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AudioCodec = audioCodec,
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VideoCodec = videoCodec,
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Container = state.OutputContainer,
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Framerate = framerate,
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CompletionPercentage = percentComplete,
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Width = state.OutputWidth,
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Height = state.OutputHeight,
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AudioChannels = state.OutputAudioChannels,
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IsAudioDirect = EncodingHelper.IsCopyCodec(state.OutputAudioCodec),
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IsVideoDirect = EncodingHelper.IsCopyCodec(state.OutputVideoCodec),
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HardwareAccelerationType = hardwareAccelerationType,
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TranscodeReasons = state.TranscodeReasons
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});
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}
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}
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/// <inheritdoc />
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public async Task<TranscodingJob> StartFfMpeg(
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StreamState state,
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string outputPath,
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string commandLineArguments,
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Guid userId,
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TranscodingJobType transcodingJobType,
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CancellationTokenSource cancellationTokenSource,
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string? workingDirectory = null)
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{
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var directory = Path.GetDirectoryName(outputPath) ?? throw new ArgumentException($"Provided path ({outputPath}) is not valid.", nameof(outputPath));
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Directory.CreateDirectory(directory);
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await AcquireResources(state, cancellationTokenSource).ConfigureAwait(false);
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if (state.VideoRequest is not null && !EncodingHelper.IsCopyCodec(state.OutputVideoCodec))
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{
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var user = userId.IsEmpty() ? null : _userManager.GetUserById(userId);
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if (user is not null && !user.HasPermission(PermissionKind.EnableVideoPlaybackTranscoding))
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{
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OnTranscodeFailedToStart(outputPath, transcodingJobType, state);
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throw new ArgumentException("User does not have access to video transcoding.");
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}
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}
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ArgumentException.ThrowIfNullOrEmpty(_mediaEncoder.EncoderPath);
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// If subtitles get burned in fonts may need to be extracted from the media file
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if (state.SubtitleStream is not null && state.SubtitleDeliveryMethod == SubtitleDeliveryMethod.Encode)
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{
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var attachmentPath = Path.Combine(_appPaths.CachePath, "attachments", state.MediaSource.Id);
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if (state.MediaSource.VideoType == VideoType.Dvd || state.MediaSource.VideoType == VideoType.BluRay)
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{
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var concatPath = Path.Join(_serverConfigurationManager.GetTranscodePath(), state.MediaSource.Id + ".concat");
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await _attachmentExtractor.ExtractAllAttachments(concatPath, state.MediaSource, attachmentPath, cancellationTokenSource.Token).ConfigureAwait(false);
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}
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else
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{
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await _attachmentExtractor.ExtractAllAttachments(state.MediaPath, state.MediaSource, attachmentPath, cancellationTokenSource.Token).ConfigureAwait(false);
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}
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if (state.SubtitleStream.IsExternal && Path.GetExtension(state.SubtitleStream.Path.AsSpan()).Equals(".mks", StringComparison.OrdinalIgnoreCase))
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{
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string subtitlePath = state.SubtitleStream.Path;
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string subtitlePathArgument = string.Format(CultureInfo.InvariantCulture, "file:\"{0}\"", subtitlePath.Replace("\"", "\\\"", StringComparison.Ordinal));
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string subtitleId = subtitlePath.GetMD5().ToString("N", CultureInfo.InvariantCulture);
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await _attachmentExtractor.ExtractAllAttachmentsExternal(subtitlePathArgument, subtitleId, attachmentPath, cancellationTokenSource.Token).ConfigureAwait(false);
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}
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}
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using var process = new Process
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{
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StartInfo = new ProcessStartInfo
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{
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WindowStyle = ProcessWindowStyle.Hidden,
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CreateNoWindow = true,
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UseShellExecute = false,
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// Must consume both stdout and stderr or deadlocks may occur
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// RedirectStandardOutput = true,
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RedirectStandardError = true,
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RedirectStandardInput = true,
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FileName = _mediaEncoder.EncoderPath,
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Arguments = commandLineArguments,
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WorkingDirectory = string.IsNullOrWhiteSpace(workingDirectory) ? string.Empty : workingDirectory,
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ErrorDialog = false
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},
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EnableRaisingEvents = true
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};
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var transcodingJob = OnTranscodeBeginning(
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outputPath,
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state.Request.PlaySessionId,
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state.MediaSource.LiveStreamId,
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Guid.NewGuid().ToString("N", CultureInfo.InvariantCulture),
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transcodingJobType,
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process,
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state.Request.DeviceId,
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state,
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cancellationTokenSource);
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_logger.LogInformation("{Filename} {Arguments}", process.StartInfo.FileName, process.StartInfo.Arguments);
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var logFilePrefix = "FFmpeg.Transcode-";
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if (state.VideoRequest is not null
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&& EncodingHelper.IsCopyCodec(state.OutputVideoCodec))
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{
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logFilePrefix = EncodingHelper.IsCopyCodec(state.OutputAudioCodec)
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? "FFmpeg.Remux-"
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: "FFmpeg.DirectStream-";
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}
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var logFilePath = Path.Combine(
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_serverConfigurationManager.ApplicationPaths.LogDirectoryPath,
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$"{logFilePrefix}{DateTime.Now:yyyy-MM-dd_HH-mm-ss}_{state.Request.MediaSourceId}_{Guid.NewGuid().ToString()[..8]}.log");
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// FFmpeg writes debug/error info to stderr. This is useful when debugging so let's put it in the log directory.
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Stream logStream = new FileStream(
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logFilePath,
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FileMode.Create,
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FileAccess.Write,
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FileShare.Read,
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IODefaults.FileStreamBufferSize,
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FileOptions.Asynchronous);
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var commandLineLogMessage = process.StartInfo.FileName + " " + process.StartInfo.Arguments;
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var commandLineLogMessageBytes = Encoding.UTF8.GetBytes(
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JsonSerializer.Serialize(state.MediaSource)
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+ Environment.NewLine
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+ Environment.NewLine
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+ commandLineLogMessage
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+ Environment.NewLine
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+ Environment.NewLine);
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await logStream.WriteAsync(commandLineLogMessageBytes, cancellationTokenSource.Token).ConfigureAwait(false);
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process.Exited += (_, _) => OnFfMpegProcessExited(process, transcodingJob, state);
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try
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{
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process.Start();
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}
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catch (Exception ex)
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{
|
|
_logger.LogError(ex, "Error starting FFmpeg");
|
|
OnTranscodeFailedToStart(outputPath, transcodingJobType, state);
|
|
|
|
throw;
|
|
}
|
|
|
|
_logger.LogDebug("Launched FFmpeg process");
|
|
state.TranscodingJob = transcodingJob;
|
|
|
|
// Important - don't await the log task or we won't be able to kill FFmpeg when the user stops playback
|
|
_ = new JobLogger(_logger).StartStreamingLog(state, process.StandardError, logStream);
|
|
|
|
// Wait for the file to exist before proceeding
|
|
var ffmpegTargetFile = state.WaitForPath ?? outputPath;
|
|
_logger.LogDebug("Waiting for the creation of {0}", ffmpegTargetFile);
|
|
while (!File.Exists(ffmpegTargetFile) && !transcodingJob.HasExited)
|
|
{
|
|
await Task.Delay(100, cancellationTokenSource.Token).ConfigureAwait(false);
|
|
}
|
|
|
|
_logger.LogDebug("File {0} created or transcoding has finished", ffmpegTargetFile);
|
|
|
|
if (state.IsInputVideo && transcodingJob.Type == TranscodingJobType.Progressive && !transcodingJob.HasExited)
|
|
{
|
|
await Task.Delay(1000, cancellationTokenSource.Token).ConfigureAwait(false);
|
|
|
|
if (state.ReadInputAtNativeFramerate && !transcodingJob.HasExited)
|
|
{
|
|
await Task.Delay(1500, cancellationTokenSource.Token).ConfigureAwait(false);
|
|
}
|
|
}
|
|
|
|
if (!transcodingJob.HasExited)
|
|
{
|
|
StartThrottler(state, transcodingJob);
|
|
}
|
|
else if (transcodingJob.ExitCode != 0)
|
|
{
|
|
throw new FfmpegException(string.Format(CultureInfo.InvariantCulture, "FFmpeg exited with code {0}", transcodingJob.ExitCode));
|
|
}
|
|
|
|
_logger.LogDebug("StartFfMpeg() finished successfully");
|
|
|
|
return transcodingJob;
|
|
}
|
|
|
|
private void StartThrottler(StreamState state, TranscodingJob transcodingJob)
|
|
{
|
|
if (EnableThrottling(state))
|
|
{
|
|
transcodingJob.TranscodingThrottler = new TranscodingThrottler(transcodingJob, _loggerFactory.CreateLogger<TranscodingThrottler>(), _serverConfigurationManager, _fileSystem, _mediaEncoder);
|
|
transcodingJob.TranscodingThrottler.Start();
|
|
}
|
|
}
|
|
|
|
private static bool EnableThrottling(StreamState state)
|
|
=> state.InputProtocol == MediaProtocol.File
|
|
&& state.RunTimeTicks.HasValue
|
|
&& state.RunTimeTicks.Value >= TimeSpan.FromMinutes(5).Ticks
|
|
&& state.IsInputVideo
|
|
&& state.VideoType == VideoType.VideoFile;
|
|
|
|
private TranscodingJob OnTranscodeBeginning(
|
|
string path,
|
|
string? playSessionId,
|
|
string? liveStreamId,
|
|
string transcodingJobId,
|
|
TranscodingJobType type,
|
|
Process process,
|
|
string? deviceId,
|
|
StreamState state,
|
|
CancellationTokenSource cancellationTokenSource)
|
|
{
|
|
lock (_activeTranscodingJobs)
|
|
{
|
|
var job = new TranscodingJob(_loggerFactory.CreateLogger<TranscodingJob>())
|
|
{
|
|
Type = type,
|
|
Path = path,
|
|
Process = process,
|
|
ActiveRequestCount = 1,
|
|
DeviceId = deviceId,
|
|
CancellationTokenSource = cancellationTokenSource,
|
|
Id = transcodingJobId,
|
|
PlaySessionId = playSessionId,
|
|
LiveStreamId = liveStreamId,
|
|
MediaSource = state.MediaSource
|
|
};
|
|
|
|
_activeTranscodingJobs.Add(job);
|
|
|
|
ReportTranscodingProgress(job, state, null, null, null, null, null);
|
|
|
|
return job;
|
|
}
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public void OnTranscodeEndRequest(TranscodingJob job)
|
|
{
|
|
job.ActiveRequestCount--;
|
|
_logger.LogDebug("OnTranscodeEndRequest job.ActiveRequestCount={ActiveRequestCount}", job.ActiveRequestCount);
|
|
if (job.ActiveRequestCount <= 0)
|
|
{
|
|
PingTimer(job, false);
|
|
}
|
|
}
|
|
|
|
private void OnTranscodeFailedToStart(string path, TranscodingJobType type, StreamState state)
|
|
{
|
|
lock (_activeTranscodingJobs)
|
|
{
|
|
var job = _activeTranscodingJobs.FirstOrDefault(j => j.Type == type && string.Equals(j.Path, path, StringComparison.OrdinalIgnoreCase));
|
|
|
|
if (job is not null)
|
|
{
|
|
_activeTranscodingJobs.Remove(job);
|
|
}
|
|
}
|
|
|
|
if (!string.IsNullOrWhiteSpace(state.Request.DeviceId))
|
|
{
|
|
_sessionManager.ClearTranscodingInfo(state.Request.DeviceId);
|
|
}
|
|
}
|
|
|
|
private void OnFfMpegProcessExited(Process process, TranscodingJob job, StreamState state)
|
|
{
|
|
job.HasExited = true;
|
|
job.ExitCode = process.ExitCode;
|
|
|
|
ReportTranscodingProgress(job, state, null, null, null, null, null);
|
|
|
|
_logger.LogDebug("Disposing stream resources");
|
|
state.Dispose();
|
|
|
|
if (process.ExitCode == 0)
|
|
{
|
|
_logger.LogInformation("FFmpeg exited with code 0");
|
|
}
|
|
else
|
|
{
|
|
_logger.LogError("FFmpeg exited with code {0}", process.ExitCode);
|
|
}
|
|
|
|
job.Dispose();
|
|
}
|
|
|
|
private async Task AcquireResources(StreamState state, CancellationTokenSource cancellationTokenSource)
|
|
{
|
|
if (state.MediaSource.RequiresOpening && string.IsNullOrWhiteSpace(state.Request.LiveStreamId))
|
|
{
|
|
var liveStreamResponse = await _mediaSourceManager.OpenLiveStream(
|
|
new LiveStreamRequest { OpenToken = state.MediaSource.OpenToken },
|
|
cancellationTokenSource.Token)
|
|
.ConfigureAwait(false);
|
|
var encodingOptions = _serverConfigurationManager.GetEncodingOptions();
|
|
|
|
_encodingHelper.AttachMediaSourceInfo(state, encodingOptions, liveStreamResponse.MediaSource, state.RequestedUrl);
|
|
|
|
if (state.VideoRequest is not null)
|
|
{
|
|
_encodingHelper.TryStreamCopy(state);
|
|
}
|
|
}
|
|
|
|
if (state.MediaSource.BufferMs.HasValue)
|
|
{
|
|
await Task.Delay(state.MediaSource.BufferMs.Value, cancellationTokenSource.Token).ConfigureAwait(false);
|
|
}
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public TranscodingJob? OnTranscodeBeginRequest(string path, TranscodingJobType type)
|
|
{
|
|
lock (_activeTranscodingJobs)
|
|
{
|
|
var job = _activeTranscodingJobs
|
|
.FirstOrDefault(j => j.Type == type && string.Equals(j.Path, path, StringComparison.OrdinalIgnoreCase));
|
|
|
|
if (job is null)
|
|
{
|
|
return null;
|
|
}
|
|
|
|
job.ActiveRequestCount++;
|
|
if (string.IsNullOrWhiteSpace(job.PlaySessionId) || job.Type == TranscodingJobType.Progressive)
|
|
{
|
|
job.StopKillTimer();
|
|
}
|
|
|
|
return job;
|
|
}
|
|
}
|
|
|
|
private void OnPlaybackProgress(object? sender, PlaybackProgressEventArgs e)
|
|
{
|
|
if (!string.IsNullOrWhiteSpace(e.PlaySessionId))
|
|
{
|
|
PingTranscodingJob(e.PlaySessionId, e.IsPaused);
|
|
}
|
|
}
|
|
|
|
private void DeleteEncodedMediaCache()
|
|
{
|
|
var path = _serverConfigurationManager.GetTranscodePath();
|
|
if (!Directory.Exists(path))
|
|
{
|
|
return;
|
|
}
|
|
|
|
foreach (var file in _fileSystem.GetFilePaths(path, true))
|
|
{
|
|
_fileSystem.DeleteFile(file);
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Transcoding lock.
|
|
/// </summary>
|
|
/// <param name="outputPath">The output path of the transcoded file.</param>
|
|
/// <param name="cancellationToken">The cancellation token.</param>
|
|
/// <returns>An <see cref="IDisposable"/>.</returns>
|
|
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
|
public ValueTask<IDisposable> LockAsync(string outputPath, CancellationToken cancellationToken)
|
|
{
|
|
return _transcodingLocks.LockAsync(outputPath, cancellationToken);
|
|
}
|
|
|
|
/// <inheritdoc />
|
|
public void Dispose()
|
|
{
|
|
_sessionManager.PlaybackProgress -= OnPlaybackProgress;
|
|
_sessionManager.PlaybackStart -= OnPlaybackProgress;
|
|
_transcodingLocks.Dispose();
|
|
}
|
|
}
|