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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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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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+
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+ return result;
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+ }
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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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+
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+ return result;
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+ }
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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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+
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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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+
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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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+
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+ var state = await GetState(request, CancellationToken.None).ConfigureAwait(false);
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+
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+ var playlistText = string.Empty;
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+
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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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+
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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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+
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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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+
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+ var builder = new StringBuilder();
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+
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+ var duration = "PT0H02M11.00S";
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+
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+ builder.AppendFormat(
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+ "<MPD type=\"static\" minBufferTime=\"PT2S\" mediaPresentationDuration=\"{0}\" profiles=\"urn:mpeg:dash:profile:mp2t-simple:2011\" xmlns=\"urn:mpeg:DASH:schema:MPD:2011\" maxSegmentDuration=\"PT{1}S\">",
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+ duration,
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+ state.SegmentLength.ToString(CultureInfo.InvariantCulture));
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+
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+ builder.Append("<ProgramInformation moreInformationURL=\"http://gpac.sourceforge.net\">");
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+ builder.Append("</ProgramInformation>");
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+
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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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+
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+ builder.Append("<ContentComponent id=\"1\" contentType=\"video\"/>");
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+ builder.Append("<ContentComponent id=\"2\" contentType=\"audio\" lang=\"eng\"/>");
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+
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+ builder.Append(GetRepresentationOpenElement(state));
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+
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+ AppendSegmentList(state, builder);
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+
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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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+
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+ builder.Append("</MPD>");
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+
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+ return builder.ToString();
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+ }
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+
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+ private string GetRepresentationOpenElement(StreamState state)
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+ {
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+ return
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+ "<Representation id=\"1\" mimeType=\"video/mp2t\" codecs=\"avc1.640028,mp4a.40.02\" width=\"1280\" height=\"1024\" sampleRate=\"44100\" numChannels=\"2\" lang=\"und\" startWithSAP=\"1\" bandwidth=\"317599\">";
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+ }
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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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+
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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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+
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+ builder.Append("<SegmentList timescale=\"1000\" duration=\"10000\">");
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+
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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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+
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+ var index = 0;
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+
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+ while (seconds > 0)
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+ {
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+ builder.AppendFormat("<SegmentURL media=\"{0}.ts{1}\"/>", index.ToString(UsCulture), queryString);
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+
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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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+
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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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+
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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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+
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+ var args = "-codec:a:0 " + codec;
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+
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+ var channels = state.OutputAudioChannels;
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+
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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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+
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+ var bitrate = state.OutputAudioBitrate;
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+
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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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+
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+ args += " " + GetAudioFilterParam(state, true);
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+
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+ return args;
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+ }
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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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+
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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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+
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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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+
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+ var hasGraphicalSubs = state.SubtitleStream != null && !state.SubtitleStream.IsTextSubtitleStream;
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+
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+ var args = "-codec:v:0 " + codec + " " + GetVideoQualityParam(state, "libx264", true) + keyFrameArg;
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+
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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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+
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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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+
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+ return args;
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+ }
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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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+
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+ var inputModifier = GetInputModifier(state);
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+
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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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+
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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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+
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+ return args;
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+ }
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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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+
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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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