885 lines
32 KiB
C#
885 lines
32 KiB
C#
using System;
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using System.Collections.Generic;
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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.Threading;
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using System.Threading.Tasks;
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using MediaBrowser.Common.Configuration;
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using MediaBrowser.Common.Extensions;
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using MediaBrowser.Controller.Entities;
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using MediaBrowser.Controller.Library;
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using MediaBrowser.Controller.MediaEncoding;
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using MediaBrowser.Controller.Persistence;
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using MediaBrowser.Controller.Providers;
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using MediaBrowser.Model.Configuration;
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using MediaBrowser.Model.Dlna;
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using MediaBrowser.Model.Dto;
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using MediaBrowser.Model.Entities;
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using MediaBrowser.Model.Globalization;
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using MediaBrowser.Model.IO;
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using MediaBrowser.Model.MediaInfo;
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using MediaBrowser.Model.Serialization;
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using MediaBrowser.Model.Threading;
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using Microsoft.Extensions.Logging;
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namespace Emby.Server.Implementations.Library
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{
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public class MediaSourceManager : IMediaSourceManager, IDisposable
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{
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private readonly IItemRepository _itemRepo;
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private readonly IUserManager _userManager;
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private readonly ILibraryManager _libraryManager;
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private readonly IJsonSerializer _jsonSerializer;
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private readonly IFileSystem _fileSystem;
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private IMediaSourceProvider[] _providers;
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private readonly ILogger _logger;
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private readonly IUserDataManager _userDataManager;
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private readonly ITimerFactory _timerFactory;
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private readonly Func<IMediaEncoder> _mediaEncoder;
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private ILocalizationManager _localizationManager;
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private IApplicationPaths _appPaths;
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public MediaSourceManager(IItemRepository itemRepo, IApplicationPaths applicationPaths, ILocalizationManager localizationManager, IUserManager userManager, ILibraryManager libraryManager, ILogger logger, IJsonSerializer jsonSerializer, IFileSystem fileSystem, IUserDataManager userDataManager, ITimerFactory timerFactory, Func<IMediaEncoder> mediaEncoder)
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{
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_itemRepo = itemRepo;
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_userManager = userManager;
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_libraryManager = libraryManager;
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_logger = logger;
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_jsonSerializer = jsonSerializer;
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_fileSystem = fileSystem;
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_userDataManager = userDataManager;
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_timerFactory = timerFactory;
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_mediaEncoder = mediaEncoder;
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_localizationManager = localizationManager;
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_appPaths = applicationPaths;
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}
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public void AddParts(IEnumerable<IMediaSourceProvider> providers)
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{
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_providers = providers.ToArray();
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}
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public List<MediaStream> GetMediaStreams(MediaStreamQuery query)
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{
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var list = _itemRepo.GetMediaStreams(query);
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foreach (var stream in list)
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{
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stream.SupportsExternalStream = StreamSupportsExternalStream(stream);
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}
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return list;
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}
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private static bool StreamSupportsExternalStream(MediaStream stream)
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{
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if (stream.IsExternal)
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{
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return true;
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}
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if (stream.IsTextSubtitleStream)
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{
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return true;
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}
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return false;
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}
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public List<MediaStream> GetMediaStreams(string mediaSourceId)
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{
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var list = GetMediaStreams(new MediaStreamQuery
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{
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ItemId = new Guid(mediaSourceId)
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});
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return GetMediaStreamsForItem(list);
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}
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public List<MediaStream> GetMediaStreams(Guid itemId)
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{
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var list = GetMediaStreams(new MediaStreamQuery
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{
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ItemId = itemId
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});
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return GetMediaStreamsForItem(list);
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}
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private List<MediaStream> GetMediaStreamsForItem(List<MediaStream> streams)
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{
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foreach (var stream in streams)
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{
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if (stream.Type == MediaStreamType.Subtitle)
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{
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stream.SupportsExternalStream = StreamSupportsExternalStream(stream);
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}
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}
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return streams;
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}
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public async Task<List<MediaSourceInfo>> GetPlayackMediaSources(BaseItem item, User user, bool allowMediaProbe, bool enablePathSubstitution, CancellationToken cancellationToken)
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{
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var mediaSources = GetStaticMediaSources(item, enablePathSubstitution, user);
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if (allowMediaProbe && mediaSources[0].Type != MediaSourceType.Placeholder && !mediaSources[0].MediaStreams.Any(i => i.Type == MediaStreamType.Audio || i.Type == MediaStreamType.Video))
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{
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await item.RefreshMetadata(new MetadataRefreshOptions(new DirectoryService(_logger, _fileSystem))
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{
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EnableRemoteContentProbe = true,
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MetadataRefreshMode = MediaBrowser.Controller.Providers.MetadataRefreshMode.FullRefresh
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}, cancellationToken).ConfigureAwait(false);
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mediaSources = GetStaticMediaSources(item, enablePathSubstitution, user);
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}
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var dynamicMediaSources = await GetDynamicMediaSources(item, cancellationToken).ConfigureAwait(false);
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var list = new List<MediaSourceInfo>();
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list.AddRange(mediaSources);
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foreach (var source in dynamicMediaSources)
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{
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if (user != null)
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{
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SetDefaultAudioAndSubtitleStreamIndexes(item, source, user);
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}
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// Validate that this is actually possible
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if (source.SupportsDirectStream)
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{
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source.SupportsDirectStream = SupportsDirectStream(source.Path, source.Protocol);
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}
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list.Add(source);
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}
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if (user != null)
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{
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foreach (var source in list)
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{
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if (string.Equals(item.MediaType, MediaType.Audio, StringComparison.OrdinalIgnoreCase))
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{
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if (!user.Policy.EnableAudioPlaybackTranscoding)
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{
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source.SupportsTranscoding = false;
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}
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}
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}
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}
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return SortMediaSources(list).Where(i => i.Type != MediaSourceType.Placeholder).ToList();
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}
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public MediaProtocol GetPathProtocol(string path)
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{
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if (path.StartsWith("Rtsp", StringComparison.OrdinalIgnoreCase))
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{
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return MediaProtocol.Rtsp;
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}
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if (path.StartsWith("Rtmp", StringComparison.OrdinalIgnoreCase))
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{
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return MediaProtocol.Rtmp;
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}
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if (path.StartsWith("Http", StringComparison.OrdinalIgnoreCase))
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{
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return MediaProtocol.Http;
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}
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if (path.StartsWith("rtp", StringComparison.OrdinalIgnoreCase))
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{
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return MediaProtocol.Rtp;
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}
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if (path.StartsWith("ftp", StringComparison.OrdinalIgnoreCase))
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{
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return MediaProtocol.Ftp;
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}
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if (path.StartsWith("udp", StringComparison.OrdinalIgnoreCase))
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{
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return MediaProtocol.Udp;
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}
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return _fileSystem.IsPathFile(path) ? MediaProtocol.File : MediaProtocol.Http;
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}
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public bool SupportsDirectStream(string path, MediaProtocol protocol)
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{
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if (protocol == MediaProtocol.File)
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{
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return true;
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}
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if (protocol == MediaProtocol.Http)
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{
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if (path != null)
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{
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if (path.IndexOf(".m3u", StringComparison.OrdinalIgnoreCase) != -1)
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{
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return false;
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}
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return true;
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}
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}
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return false;
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}
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private async Task<IEnumerable<MediaSourceInfo>> GetDynamicMediaSources(BaseItem item, CancellationToken cancellationToken)
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{
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var tasks = _providers.Select(i => GetDynamicMediaSources(item, i, cancellationToken));
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var results = await Task.WhenAll(tasks).ConfigureAwait(false);
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return results.SelectMany(i => i.ToList());
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}
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private async Task<IEnumerable<MediaSourceInfo>> GetDynamicMediaSources(BaseItem item, IMediaSourceProvider provider, CancellationToken cancellationToken)
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{
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try
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{
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var sources = await provider.GetMediaSources(item, cancellationToken).ConfigureAwait(false);
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var list = sources.ToList();
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foreach (var mediaSource in list)
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{
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mediaSource.InferTotalBitrate();
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SetKeyProperties(provider, mediaSource);
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}
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return list;
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}
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catch (Exception ex)
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{
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_logger.LogError(ex, "Error getting media sources");
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return new List<MediaSourceInfo>();
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}
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}
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private static void SetKeyProperties(IMediaSourceProvider provider, MediaSourceInfo mediaSource)
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{
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var prefix = provider.GetType().FullName.GetMD5().ToString("N") + LiveStreamIdDelimeter;
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if (!string.IsNullOrEmpty(mediaSource.OpenToken) && !mediaSource.OpenToken.StartsWith(prefix, StringComparison.OrdinalIgnoreCase))
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{
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mediaSource.OpenToken = prefix + mediaSource.OpenToken;
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}
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if (!string.IsNullOrEmpty(mediaSource.LiveStreamId) && !mediaSource.LiveStreamId.StartsWith(prefix, StringComparison.OrdinalIgnoreCase))
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{
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mediaSource.LiveStreamId = prefix + mediaSource.LiveStreamId;
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}
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}
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public async Task<MediaSourceInfo> GetMediaSource(BaseItem item, string mediaSourceId, string liveStreamId, bool enablePathSubstitution, CancellationToken cancellationToken)
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{
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if (!string.IsNullOrEmpty(liveStreamId))
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{
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return await GetLiveStream(liveStreamId, cancellationToken).ConfigureAwait(false);
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}
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var sources = await GetPlayackMediaSources(item, null, false, enablePathSubstitution, cancellationToken).ConfigureAwait(false);
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return sources.FirstOrDefault(i => string.Equals(i.Id, mediaSourceId, StringComparison.OrdinalIgnoreCase));
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}
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public List<MediaSourceInfo> GetStaticMediaSources(BaseItem item, bool enablePathSubstitution, User user = null)
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{
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if (item == null)
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{
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throw new ArgumentNullException(nameof(item));
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}
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var hasMediaSources = (IHasMediaSources)item;
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var sources = hasMediaSources.GetMediaSources(enablePathSubstitution);
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if (user != null)
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{
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foreach (var source in sources)
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{
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SetDefaultAudioAndSubtitleStreamIndexes(item, source, user);
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}
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}
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return sources;
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}
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private string[] NormalizeLanguage(string language)
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{
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if (language != null)
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{
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var culture = _localizationManager.FindLanguageInfo(language);
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if (culture != null)
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{
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return culture.ThreeLetterISOLanguageNames;
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}
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return new string[] { language };
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}
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return Array.Empty<string>();
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}
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private void SetDefaultSubtitleStreamIndex(MediaSourceInfo source, UserItemData userData, User user, bool allowRememberingSelection)
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{
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if (userData.SubtitleStreamIndex.HasValue && user.Configuration.RememberSubtitleSelections && user.Configuration.SubtitleMode != SubtitlePlaybackMode.None && allowRememberingSelection)
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{
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var index = userData.SubtitleStreamIndex.Value;
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// Make sure the saved index is still valid
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if (index == -1 || source.MediaStreams.Any(i => i.Type == MediaStreamType.Subtitle && i.Index == index))
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{
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source.DefaultSubtitleStreamIndex = index;
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return;
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}
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}
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var preferredSubs = string.IsNullOrEmpty(user.Configuration.SubtitleLanguagePreference)
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? Array.Empty<string>() : NormalizeLanguage(user.Configuration.SubtitleLanguagePreference);
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var defaultAudioIndex = source.DefaultAudioStreamIndex;
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var audioLangage = defaultAudioIndex == null
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? null
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: source.MediaStreams.Where(i => i.Type == MediaStreamType.Audio && i.Index == defaultAudioIndex).Select(i => i.Language).FirstOrDefault();
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source.DefaultSubtitleStreamIndex = MediaStreamSelector.GetDefaultSubtitleStreamIndex(source.MediaStreams,
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preferredSubs,
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user.Configuration.SubtitleMode,
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audioLangage);
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MediaStreamSelector.SetSubtitleStreamScores(source.MediaStreams, preferredSubs,
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user.Configuration.SubtitleMode, audioLangage);
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}
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private void SetDefaultAudioStreamIndex(MediaSourceInfo source, UserItemData userData, User user, bool allowRememberingSelection)
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{
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if (userData.AudioStreamIndex.HasValue && user.Configuration.RememberAudioSelections && allowRememberingSelection)
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{
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var index = userData.AudioStreamIndex.Value;
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// Make sure the saved index is still valid
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if (source.MediaStreams.Any(i => i.Type == MediaStreamType.Audio && i.Index == index))
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{
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source.DefaultAudioStreamIndex = index;
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return;
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}
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}
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var preferredAudio = string.IsNullOrEmpty(user.Configuration.AudioLanguagePreference)
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? Array.Empty<string>()
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: NormalizeLanguage(user.Configuration.AudioLanguagePreference);
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source.DefaultAudioStreamIndex = MediaStreamSelector.GetDefaultAudioStreamIndex(source.MediaStreams, preferredAudio, user.Configuration.PlayDefaultAudioTrack);
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}
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public void SetDefaultAudioAndSubtitleStreamIndexes(BaseItem item, MediaSourceInfo source, User user)
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{
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// Item would only be null if the app didn't supply ItemId as part of the live stream open request
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var mediaType = item == null ? MediaType.Video : item.MediaType;
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if (string.Equals(mediaType, MediaType.Video, StringComparison.OrdinalIgnoreCase))
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{
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var userData = item == null ? new UserItemData() : _userDataManager.GetUserData(user, item);
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var allowRememberingSelection = item == null || item.EnableRememberingTrackSelections;
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SetDefaultAudioStreamIndex(source, userData, user, allowRememberingSelection);
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SetDefaultSubtitleStreamIndex(source, userData, user, allowRememberingSelection);
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}
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else if (string.Equals(mediaType, MediaType.Audio, StringComparison.OrdinalIgnoreCase))
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{
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var audio = source.MediaStreams.FirstOrDefault(i => i.Type == MediaStreamType.Audio);
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if (audio != null)
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{
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source.DefaultAudioStreamIndex = audio.Index;
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}
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}
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}
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private static IEnumerable<MediaSourceInfo> SortMediaSources(IEnumerable<MediaSourceInfo> sources)
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{
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return sources.OrderBy(i =>
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{
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if (i.VideoType.HasValue && i.VideoType.Value == VideoType.VideoFile)
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{
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return 0;
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}
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return 1;
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}).ThenBy(i => i.Video3DFormat.HasValue ? 1 : 0)
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.ThenByDescending(i =>
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{
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var stream = i.VideoStream;
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return stream == null || stream.Width == null ? 0 : stream.Width.Value;
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})
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.ToList();
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}
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private readonly Dictionary<string, ILiveStream> _openStreams = new Dictionary<string, ILiveStream>(StringComparer.OrdinalIgnoreCase);
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private readonly SemaphoreSlim _liveStreamSemaphore = new SemaphoreSlim(1, 1);
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public async Task<Tuple<LiveStreamResponse, IDirectStreamProvider>> OpenLiveStreamInternal(LiveStreamRequest request, CancellationToken cancellationToken)
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{
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await _liveStreamSemaphore.WaitAsync(cancellationToken).ConfigureAwait(false);
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MediaSourceInfo mediaSource;
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ILiveStream liveStream;
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try
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{
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var tuple = GetProvider(request.OpenToken);
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var provider = tuple.Item1;
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var currentLiveStreams = _openStreams.Values.ToList();
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liveStream = await provider.OpenMediaSource(tuple.Item2, currentLiveStreams, cancellationToken).ConfigureAwait(false);
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mediaSource = liveStream.MediaSource;
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// Validate that this is actually possible
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if (mediaSource.SupportsDirectStream)
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{
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mediaSource.SupportsDirectStream = SupportsDirectStream(mediaSource.Path, mediaSource.Protocol);
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}
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SetKeyProperties(provider, mediaSource);
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_openStreams[mediaSource.LiveStreamId] = liveStream;
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}
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finally
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{
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_liveStreamSemaphore.Release();
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}
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// TODO: Don't hardcode this
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var isAudio = false;
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try
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{
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if (mediaSource.MediaStreams.Any(i => i.Index != -1) || !mediaSource.SupportsProbing)
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{
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AddMediaInfo(mediaSource, isAudio);
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}
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else
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{
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// hack - these two values were taken from LiveTVMediaSourceProvider
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var cacheKey = request.OpenToken;
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await new LiveStreamHelper(_mediaEncoder(), _logger, _jsonSerializer, _appPaths).AddMediaInfoWithProbe(mediaSource, isAudio, cacheKey, true, cancellationToken).ConfigureAwait(false);
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}
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}
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catch (Exception ex)
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{
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_logger.LogError(ex, "Error probing live tv stream");
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AddMediaInfo(mediaSource, isAudio);
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}
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var json = _jsonSerializer.SerializeToString(mediaSource);
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_logger.LogInformation("Live stream opened: " + json);
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var clone = _jsonSerializer.DeserializeFromString<MediaSourceInfo>(json);
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if (!request.UserId.Equals(Guid.Empty))
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{
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var user = _userManager.GetUserById(request.UserId);
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var item = request.ItemId.Equals(Guid.Empty)
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? null
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: _libraryManager.GetItemById(request.ItemId);
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SetDefaultAudioAndSubtitleStreamIndexes(item, clone, user);
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}
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return new Tuple<LiveStreamResponse, IDirectStreamProvider>(new LiveStreamResponse
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{
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MediaSource = clone
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}, liveStream as IDirectStreamProvider);
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}
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private static void AddMediaInfo(MediaSourceInfo mediaSource, bool isAudio)
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{
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mediaSource.DefaultSubtitleStreamIndex = null;
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// Null this out so that it will be treated like a live stream
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if (mediaSource.IsInfiniteStream)
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{
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mediaSource.RunTimeTicks = null;
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}
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var audioStream = mediaSource.MediaStreams.FirstOrDefault(i => i.Type == MediaBrowser.Model.Entities.MediaStreamType.Audio);
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if (audioStream == null || audioStream.Index == -1)
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{
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mediaSource.DefaultAudioStreamIndex = null;
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}
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else
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{
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mediaSource.DefaultAudioStreamIndex = audioStream.Index;
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}
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var videoStream = mediaSource.MediaStreams.FirstOrDefault(i => i.Type == MediaBrowser.Model.Entities.MediaStreamType.Video);
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if (videoStream != null)
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{
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if (!videoStream.BitRate.HasValue)
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{
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var width = videoStream.Width ?? 1920;
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if (width >= 3000)
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{
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videoStream.BitRate = 30000000;
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}
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else if (width >= 1900)
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{
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videoStream.BitRate = 20000000;
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}
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else if (width >= 1200)
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{
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videoStream.BitRate = 8000000;
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}
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else if (width >= 700)
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{
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videoStream.BitRate = 2000000;
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}
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}
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}
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// Try to estimate this
|
|
mediaSource.InferTotalBitrate();
|
|
}
|
|
|
|
public async Task<IDirectStreamProvider> GetDirectStreamProviderByUniqueId(string uniqueId, CancellationToken cancellationToken)
|
|
{
|
|
await _liveStreamSemaphore.WaitAsync(cancellationToken).ConfigureAwait(false);
|
|
|
|
try
|
|
{
|
|
var info = _openStreams.Values.FirstOrDefault(i =>
|
|
{
|
|
var liveStream = i as ILiveStream;
|
|
if (liveStream != null)
|
|
{
|
|
return string.Equals(liveStream.UniqueId, uniqueId, StringComparison.OrdinalIgnoreCase);
|
|
}
|
|
|
|
return false;
|
|
});
|
|
|
|
return info as IDirectStreamProvider;
|
|
}
|
|
finally
|
|
{
|
|
_liveStreamSemaphore.Release();
|
|
}
|
|
}
|
|
|
|
public async Task<LiveStreamResponse> OpenLiveStream(LiveStreamRequest request, CancellationToken cancellationToken)
|
|
{
|
|
var result = await OpenLiveStreamInternal(request, cancellationToken).ConfigureAwait(false);
|
|
return result.Item1;
|
|
}
|
|
|
|
public async Task<MediaSourceInfo> GetLiveStreamMediaInfo(string id, CancellationToken cancellationToken)
|
|
{
|
|
var liveStreamInfo = await GetLiveStreamInfo(id, cancellationToken).ConfigureAwait(false);
|
|
|
|
var mediaSource = liveStreamInfo.MediaSource;
|
|
|
|
if (liveStreamInfo is IDirectStreamProvider)
|
|
{
|
|
var info = await _mediaEncoder().GetMediaInfo(new MediaInfoRequest
|
|
{
|
|
MediaSource = mediaSource,
|
|
ExtractChapters = false,
|
|
MediaType = DlnaProfileType.Video
|
|
|
|
}, cancellationToken).ConfigureAwait(false);
|
|
|
|
mediaSource.MediaStreams = info.MediaStreams;
|
|
mediaSource.Container = info.Container;
|
|
mediaSource.Bitrate = info.Bitrate;
|
|
}
|
|
|
|
return mediaSource;
|
|
}
|
|
|
|
public async Task AddMediaInfoWithProbe(MediaSourceInfo mediaSource, bool isAudio, string cacheKey, bool addProbeDelay, bool isLiveStream, CancellationToken cancellationToken)
|
|
{
|
|
var originalRuntime = mediaSource.RunTimeTicks;
|
|
|
|
var now = DateTime.UtcNow;
|
|
|
|
MediaInfo mediaInfo = null;
|
|
var cacheFilePath = string.IsNullOrEmpty(cacheKey) ? null : Path.Combine(_appPaths.CachePath, "mediainfo", cacheKey.GetMD5().ToString("N") + ".json");
|
|
|
|
if (!string.IsNullOrEmpty(cacheKey))
|
|
{
|
|
try
|
|
{
|
|
mediaInfo = _jsonSerializer.DeserializeFromFile<MediaInfo>(cacheFilePath);
|
|
|
|
//_logger.LogDebug("Found cached media info");
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
_logger.LogDebug(ex, "_jsonSerializer.DeserializeFromFile threw an exception.");
|
|
}
|
|
}
|
|
|
|
if (mediaInfo == null)
|
|
{
|
|
if (addProbeDelay)
|
|
{
|
|
var delayMs = mediaSource.AnalyzeDurationMs ?? 0;
|
|
delayMs = Math.Max(3000, delayMs);
|
|
await Task.Delay(delayMs, cancellationToken).ConfigureAwait(false);
|
|
}
|
|
|
|
if (isLiveStream)
|
|
{
|
|
mediaSource.AnalyzeDurationMs = 3000;
|
|
}
|
|
|
|
mediaInfo = await _mediaEncoder().GetMediaInfo(new MediaInfoRequest
|
|
{
|
|
MediaSource = mediaSource,
|
|
MediaType = isAudio ? DlnaProfileType.Audio : DlnaProfileType.Video,
|
|
ExtractChapters = false
|
|
|
|
}, cancellationToken).ConfigureAwait(false);
|
|
|
|
if (cacheFilePath != null)
|
|
{
|
|
_fileSystem.CreateDirectory(_fileSystem.GetDirectoryName(cacheFilePath));
|
|
_jsonSerializer.SerializeToFile(mediaInfo, cacheFilePath);
|
|
|
|
//_logger.LogDebug("Saved media info to {0}", cacheFilePath);
|
|
}
|
|
}
|
|
|
|
var mediaStreams = mediaInfo.MediaStreams;
|
|
|
|
if (isLiveStream && !string.IsNullOrEmpty(cacheKey))
|
|
{
|
|
var newList = new List<MediaStream>();
|
|
newList.AddRange(mediaStreams.Where(i => i.Type == MediaStreamType.Video).Take(1));
|
|
newList.AddRange(mediaStreams.Where(i => i.Type == MediaStreamType.Audio).Take(1));
|
|
|
|
foreach (var stream in newList)
|
|
{
|
|
stream.Index = -1;
|
|
stream.Language = null;
|
|
}
|
|
|
|
mediaStreams = newList;
|
|
}
|
|
|
|
_logger.LogInformation("Live tv media info probe took {0} seconds", (DateTime.UtcNow - now).TotalSeconds.ToString(CultureInfo.InvariantCulture));
|
|
|
|
mediaSource.Bitrate = mediaInfo.Bitrate;
|
|
mediaSource.Container = mediaInfo.Container;
|
|
mediaSource.Formats = mediaInfo.Formats;
|
|
mediaSource.MediaStreams = mediaStreams;
|
|
mediaSource.RunTimeTicks = mediaInfo.RunTimeTicks;
|
|
mediaSource.Size = mediaInfo.Size;
|
|
mediaSource.Timestamp = mediaInfo.Timestamp;
|
|
mediaSource.Video3DFormat = mediaInfo.Video3DFormat;
|
|
mediaSource.VideoType = mediaInfo.VideoType;
|
|
|
|
mediaSource.DefaultSubtitleStreamIndex = null;
|
|
|
|
if (isLiveStream)
|
|
{
|
|
// Null this out so that it will be treated like a live stream
|
|
if (!originalRuntime.HasValue)
|
|
{
|
|
mediaSource.RunTimeTicks = null;
|
|
}
|
|
}
|
|
|
|
var audioStream = mediaStreams.FirstOrDefault(i => i.Type == MediaStreamType.Audio);
|
|
|
|
if (audioStream == null || audioStream.Index == -1)
|
|
{
|
|
mediaSource.DefaultAudioStreamIndex = null;
|
|
}
|
|
else
|
|
{
|
|
mediaSource.DefaultAudioStreamIndex = audioStream.Index;
|
|
}
|
|
|
|
var videoStream = mediaStreams.FirstOrDefault(i => i.Type == MediaStreamType.Video);
|
|
if (videoStream != null)
|
|
{
|
|
if (!videoStream.BitRate.HasValue)
|
|
{
|
|
var width = videoStream.Width ?? 1920;
|
|
|
|
if (width >= 3000)
|
|
{
|
|
videoStream.BitRate = 30000000;
|
|
}
|
|
|
|
else if (width >= 1900)
|
|
{
|
|
videoStream.BitRate = 20000000;
|
|
}
|
|
|
|
else if (width >= 1200)
|
|
{
|
|
videoStream.BitRate = 8000000;
|
|
}
|
|
|
|
else if (width >= 700)
|
|
{
|
|
videoStream.BitRate = 2000000;
|
|
}
|
|
}
|
|
|
|
// This is coming up false and preventing stream copy
|
|
videoStream.IsAVC = null;
|
|
}
|
|
|
|
if (isLiveStream)
|
|
{
|
|
mediaSource.AnalyzeDurationMs = 3000;
|
|
}
|
|
|
|
// Try to estimate this
|
|
mediaSource.InferTotalBitrate(true);
|
|
}
|
|
|
|
public async Task<Tuple<MediaSourceInfo, IDirectStreamProvider>> GetLiveStreamWithDirectStreamProvider(string id, CancellationToken cancellationToken)
|
|
{
|
|
if (string.IsNullOrEmpty(id))
|
|
{
|
|
throw new ArgumentNullException(nameof(id));
|
|
}
|
|
|
|
var info = await GetLiveStreamInfo(id, cancellationToken).ConfigureAwait(false);
|
|
return new Tuple<MediaSourceInfo, IDirectStreamProvider>(info.MediaSource, info as IDirectStreamProvider);
|
|
}
|
|
|
|
private async Task<ILiveStream> GetLiveStreamInfo(string id, CancellationToken cancellationToken)
|
|
{
|
|
if (string.IsNullOrEmpty(id))
|
|
{
|
|
throw new ArgumentNullException(nameof(id));
|
|
}
|
|
|
|
await _liveStreamSemaphore.WaitAsync(cancellationToken).ConfigureAwait(false);
|
|
|
|
try
|
|
{
|
|
if (_openStreams.TryGetValue(id, out var info))
|
|
{
|
|
return info;
|
|
}
|
|
else
|
|
{
|
|
throw new ResourceNotFoundException();
|
|
}
|
|
}
|
|
finally
|
|
{
|
|
_liveStreamSemaphore.Release();
|
|
}
|
|
}
|
|
|
|
public async Task<MediaSourceInfo> GetLiveStream(string id, CancellationToken cancellationToken)
|
|
{
|
|
var result = await GetLiveStreamWithDirectStreamProvider(id, cancellationToken).ConfigureAwait(false);
|
|
return result.Item1;
|
|
}
|
|
|
|
public async Task CloseLiveStream(string id)
|
|
{
|
|
if (string.IsNullOrEmpty(id))
|
|
{
|
|
throw new ArgumentNullException(nameof(id));
|
|
}
|
|
|
|
await _liveStreamSemaphore.WaitAsync().ConfigureAwait(false);
|
|
|
|
try
|
|
{
|
|
if (_openStreams.TryGetValue(id, out var liveStream))
|
|
{
|
|
liveStream.ConsumerCount--;
|
|
|
|
_logger.LogInformation("Live stream {0} consumer count is now {1}", liveStream.OriginalStreamId, liveStream.ConsumerCount);
|
|
|
|
if (liveStream.ConsumerCount <= 0)
|
|
{
|
|
_openStreams.Remove(id);
|
|
|
|
_logger.LogInformation("Closing live stream {0}", id);
|
|
|
|
await liveStream.Close().ConfigureAwait(false);
|
|
_logger.LogInformation("Live stream {0} closed successfully", id);
|
|
}
|
|
}
|
|
}
|
|
finally
|
|
{
|
|
_liveStreamSemaphore.Release();
|
|
}
|
|
}
|
|
|
|
// Do not use a pipe here because Roku http requests to the server will fail, without any explicit error message.
|
|
private const char LiveStreamIdDelimeter = '_';
|
|
|
|
private Tuple<IMediaSourceProvider, string> GetProvider(string key)
|
|
{
|
|
if (string.IsNullOrEmpty(key))
|
|
{
|
|
throw new ArgumentException("key");
|
|
}
|
|
|
|
var keys = key.Split(new[] { LiveStreamIdDelimeter }, 2);
|
|
|
|
var provider = _providers.FirstOrDefault(i => string.Equals(i.GetType().FullName.GetMD5().ToString("N"), keys[0], StringComparison.OrdinalIgnoreCase));
|
|
|
|
var splitIndex = key.IndexOf(LiveStreamIdDelimeter);
|
|
var keyId = key.Substring(splitIndex + 1);
|
|
|
|
return new Tuple<IMediaSourceProvider, string>(provider, keyId);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
|
|
/// </summary>
|
|
public void Dispose()
|
|
{
|
|
Dispose(true);
|
|
}
|
|
|
|
private readonly object _disposeLock = new object();
|
|
/// <summary>
|
|
/// Releases unmanaged and - optionally - managed resources.
|
|
/// </summary>
|
|
/// <param name="dispose"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
|
|
protected virtual void Dispose(bool dispose)
|
|
{
|
|
if (dispose)
|
|
{
|
|
lock (_disposeLock)
|
|
{
|
|
foreach (var key in _openStreams.Keys.ToList())
|
|
{
|
|
var task = CloseLiveStream(key);
|
|
|
|
Task.WaitAll(task);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|