mirror of
https://github.com/jellyfin/jellyfin.git
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368 lines
13 KiB
C#
368 lines
13 KiB
C#
using System.Security;
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using MediaBrowser.Common.IO;
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using MediaBrowser.Common.Net;
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using MediaBrowser.Controller.Channels;
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using MediaBrowser.Controller.Configuration;
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using MediaBrowser.Controller.Dlna;
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using MediaBrowser.Controller.Library;
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using MediaBrowser.Controller.LiveTv;
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using MediaBrowser.Controller.MediaEncoding;
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using MediaBrowser.Model.IO;
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using ServiceStack;
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using System;
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using System.Collections.Generic;
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using System.Globalization;
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using System.Text;
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using System.Threading;
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using System.Threading.Tasks;
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namespace MediaBrowser.Api.Playback.Hls
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{
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/// <summary>
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/// Options is needed for chromecast. Threw Head in there since it's related
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/// </summary>
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[Route("/Videos/{Id}/master.mpd", "GET", Summary = "Gets a video stream using Mpeg dash.")]
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[Route("/Videos/{Id}/master.mpd", "HEAD", Summary = "Gets a video stream using Mpeg dash.")]
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public class GetMasterManifest : VideoStreamRequest
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{
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public bool EnableAdaptiveBitrateStreaming { get; set; }
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public GetMasterManifest()
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{
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EnableAdaptiveBitrateStreaming = true;
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}
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}
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[Route("/Videos/{Id}/dash/{SegmentId}.ts", "GET")]
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public class GetDashSegment : VideoStreamRequest
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{
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/// <summary>
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/// Gets or sets the segment id.
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/// </summary>
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/// <value>The segment id.</value>
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public string SegmentId { get; set; }
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}
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public class MpegDashService : BaseHlsService
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{
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protected INetworkManager NetworkManager { get; private set; }
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public MpegDashService(IServerConfigurationManager serverConfig, IUserManager userManager, ILibraryManager libraryManager, IIsoManager isoManager, IMediaEncoder mediaEncoder, IFileSystem fileSystem, ILiveTvManager liveTvManager, IDlnaManager dlnaManager, IChannelManager channelManager, ISubtitleEncoder subtitleEncoder, INetworkManager networkManager)
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: base(serverConfig, userManager, libraryManager, isoManager, mediaEncoder, fileSystem, liveTvManager, dlnaManager, channelManager, subtitleEncoder)
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{
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NetworkManager = networkManager;
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}
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public object Get(GetMasterManifest request)
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{
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var result = GetAsync(request, "GET").Result;
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return result;
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}
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public object Head(GetMasterManifest request)
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{
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var result = GetAsync(request, "HEAD").Result;
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return result;
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}
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private async Task<object> GetAsync(GetMasterManifest request, string method)
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{
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if (string.Equals(request.AudioCodec, "copy", StringComparison.OrdinalIgnoreCase))
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{
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throw new ArgumentException("Audio codec copy is not allowed here.");
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}
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if (string.Equals(request.VideoCodec, "copy", StringComparison.OrdinalIgnoreCase))
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{
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throw new ArgumentException("Video codec copy is not allowed here.");
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}
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if (string.IsNullOrEmpty(request.MediaSourceId))
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{
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throw new ArgumentException("MediaSourceId is required");
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}
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var state = await GetState(request, CancellationToken.None).ConfigureAwait(false);
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var playlistText = string.Empty;
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if (string.Equals(method, "GET", StringComparison.OrdinalIgnoreCase))
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{
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playlistText = GetManifestText(state);
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}
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return ResultFactory.GetResult(playlistText, Common.Net.MimeTypes.GetMimeType("playlist.mpd"), new Dictionary<string, string>());
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}
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private string GetManifestText(StreamState state)
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{
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var audioBitrate = state.OutputAudioBitrate ?? 0;
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var videoBitrate = state.OutputVideoBitrate ?? 0;
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var builder = new StringBuilder();
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var time = TimeSpan.FromTicks(state.RunTimeTicks.Value);
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var duration = "PT" + time.Hours.ToString("00", UsCulture) + "H" + time.Minutes.ToString("00", UsCulture) + "M" + time.Seconds.ToString("00", UsCulture) + ".00S";
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builder.Append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
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builder.AppendFormat(
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"<MPD xmlns=\"urn:mpeg:dash:schema:mpd:2011\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xsi:schemaLocation=\"urn:mpeg:dash:schema:mpd:2011 http://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-DASH_schema_files/DASH-MPD.xsd\" minBufferTime=\"PT2.00S\" mediaPresentationDuration=\"{0}\" maxSegmentDuration=\"PT{1}S\" type=\"static\" profiles=\"urn:mpeg:dash:profile:mp2t-simple:2011\">",
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duration,
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state.SegmentLength.ToString(CultureInfo.InvariantCulture));
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builder.Append("<ProgramInformation moreInformationURL=\"http://gpac.sourceforge.net\">");
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builder.Append("</ProgramInformation>");
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builder.AppendFormat("<Period start=\"PT0S\" duration=\"{0}\">", duration);
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builder.Append("<AdaptationSet segmentAlignment=\"true\">");
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builder.Append("<ContentComponent id=\"1\" contentType=\"video\"/>");
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var lang = state.AudioStream != null ? state.AudioStream.Language : null;
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if (string.IsNullOrWhiteSpace(lang)) lang = "und";
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builder.AppendFormat("<ContentComponent id=\"2\" contentType=\"audio\" lang=\"{0}\"/>", lang);
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builder.Append(GetRepresentationOpenElement(state, lang));
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AppendSegmentList(state, builder);
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builder.Append("</Representation>");
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builder.Append("</AdaptationSet>");
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builder.Append("</Period>");
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builder.Append("</MPD>");
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return builder.ToString();
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}
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private string GetRepresentationOpenElement(StreamState state, string language)
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{
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var codecs = GetVideoCodecDescriptor(state) + "," + GetAudioCodecDescriptor(state);
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var xml = "<Representation id=\"1\" mimeType=\"video/mp2t\" startWithSAP=\"1\" codecs=\"" + codecs + "\"";
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if (state.OutputWidth.HasValue)
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{
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xml += " width=\"" + state.OutputWidth.Value.ToString(UsCulture) + "\"";
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}
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if (state.OutputHeight.HasValue)
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{
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xml += " height=\"" + state.OutputHeight.Value.ToString(UsCulture) + "\"";
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}
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if (state.OutputAudioSampleRate.HasValue)
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{
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xml += " sampleRate=\"" + state.OutputAudioSampleRate.Value.ToString(UsCulture) + "\"";
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}
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if (state.TotalOutputBitrate.HasValue)
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{
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xml += " bandwidth=\"" + state.TotalOutputBitrate.Value.ToString(UsCulture) + "\"";
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}
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xml += ">";
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return xml;
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}
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private string GetVideoCodecDescriptor(StreamState state)
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{
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// https://developer.apple.com/library/ios/documentation/networkinginternet/conceptual/streamingmediaguide/FrequentlyAskedQuestions/FrequentlyAskedQuestions.html
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var level = state.TargetVideoLevel ?? 0;
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var profile = state.TargetVideoProfile ?? string.Empty;
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if (profile.IndexOf("high", StringComparison.OrdinalIgnoreCase) != -1)
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{
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if (level >= 4.1)
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{
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return "avc1.640028";
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}
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if (level >= 4)
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{
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return "avc1.640028";
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}
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return "avc1.64001f";
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}
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if (profile.IndexOf("main", StringComparison.OrdinalIgnoreCase) != -1)
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{
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if (level >= 4)
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{
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return "avc1.4d0028";
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}
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if (level >= 3.1)
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{
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return "avc1.4d001f";
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}
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return "avc1.4d001e";
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}
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if (level >= 3.1)
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{
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return "avc1.42001f";
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}
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return "avc1.42001e";
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}
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private string GetAudioCodecDescriptor(StreamState state)
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{
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// https://developer.apple.com/library/ios/documentation/networkinginternet/conceptual/streamingmediaguide/FrequentlyAskedQuestions/FrequentlyAskedQuestions.html
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if (string.Equals(state.OutputAudioCodec, "mp3", StringComparison.OrdinalIgnoreCase))
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{
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return "mp4a.40.34";
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}
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// AAC 5ch
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if (state.OutputAudioChannels.HasValue && state.OutputAudioChannels.Value >= 5)
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{
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return "mp4a.40.5";
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}
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// AAC 2ch
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return "mp4a.40.2";
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}
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public object Get(GetDashSegment request)
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{
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return null;
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}
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private void AppendSegmentList(StreamState state, StringBuilder builder)
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{
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var seconds = TimeSpan.FromTicks(state.RunTimeTicks ?? 0).TotalSeconds;
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var queryStringIndex = Request.RawUrl.IndexOf('?');
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var queryString = queryStringIndex == -1 ? string.Empty : Request.RawUrl.Substring(queryStringIndex);
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var index = 0;
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builder.Append("<SegmentList timescale=\"1000\" duration=\"10000\">");
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while (seconds > 0)
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{
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var segmentUrl = string.Format("{0}.ts{1}", index.ToString(UsCulture), SecurityElement.Escape(queryString));
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builder.AppendFormat("<SegmentURL media=\"{0}\"/>", segmentUrl);
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seconds -= state.SegmentLength;
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index++;
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}
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builder.Append("</SegmentList>");
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}
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protected override string GetAudioArguments(StreamState state)
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{
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var codec = state.OutputAudioCodec;
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if (codec.Equals("copy", StringComparison.OrdinalIgnoreCase))
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{
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return "-codec:a:0 copy";
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}
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var args = "-codec:a:0 " + codec;
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var channels = state.OutputAudioChannels;
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if (channels.HasValue)
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{
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args += " -ac " + channels.Value;
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}
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var bitrate = state.OutputAudioBitrate;
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if (bitrate.HasValue)
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{
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args += " -ab " + bitrate.Value.ToString(UsCulture);
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}
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args += " " + GetAudioFilterParam(state, true);
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return args;
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}
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protected override string GetVideoArguments(StreamState state)
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{
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var codec = state.OutputVideoCodec;
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// See if we can save come cpu cycles by avoiding encoding
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if (codec.Equals("copy", StringComparison.OrdinalIgnoreCase))
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{
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return IsH264(state.VideoStream) ? "-codec:v:0 copy -bsf:v h264_mp4toannexb" : "-codec:v:0 copy";
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}
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var keyFrameArg = string.Format(" -force_key_frames expr:gte(t,n_forced*{0})",
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state.SegmentLength.ToString(UsCulture));
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var hasGraphicalSubs = state.SubtitleStream != null && !state.SubtitleStream.IsTextSubtitleStream;
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var args = "-codec:v:0 " + codec + " " + GetVideoQualityParam(state, "libx264", true) + keyFrameArg;
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// Add resolution params, if specified
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if (!hasGraphicalSubs)
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{
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args += GetOutputSizeParam(state, codec, false);
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}
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// This is for internal graphical subs
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if (hasGraphicalSubs)
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{
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args += GetGraphicalSubtitleParam(state, codec);
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}
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return args;
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}
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protected override string GetCommandLineArguments(string outputPath, string transcodingJobId, StreamState state, bool isEncoding)
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{
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var threads = GetNumberOfThreads(state, false);
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var inputModifier = GetInputModifier(state);
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// If isEncoding is true we're actually starting ffmpeg
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var startNumberParam = isEncoding ? GetStartNumber(state).ToString(UsCulture) : "0";
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var args = string.Format("{0} -i {1} -map_metadata -1 -threads {2} {3} {4} -copyts -flags -global_header {5} -hls_time {6} -start_number {7} -hls_list_size {8} -y \"{9}\"",
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inputModifier,
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GetInputArgument(transcodingJobId, state),
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threads,
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GetMapArgs(state),
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GetVideoArguments(state),
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GetAudioArguments(state),
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state.SegmentLength.ToString(UsCulture),
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startNumberParam,
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state.HlsListSize.ToString(UsCulture),
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outputPath
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).Trim();
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return args;
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}
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/// <summary>
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/// Gets the segment file extension.
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/// </summary>
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/// <param name="state">The state.</param>
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/// <returns>System.String.</returns>
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protected override string GetSegmentFileExtension(StreamState state)
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{
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return ".ts";
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}
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protected override TranscodingJobType TranscodingJobType
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{
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get
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{
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return TranscodingJobType.Dash;
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}
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}
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}
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}
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