diff options
Diffstat (limited to 'MediaBrowser.Api/Playback/Hls/MpegDashService.cs')
| -rw-r--r-- | MediaBrowser.Api/Playback/Hls/MpegDashService.cs | 675 |
1 files changed, 0 insertions, 675 deletions
diff --git a/MediaBrowser.Api/Playback/Hls/MpegDashService.cs b/MediaBrowser.Api/Playback/Hls/MpegDashService.cs deleted file mode 100644 index 80451c0cc..000000000 --- a/MediaBrowser.Api/Playback/Hls/MpegDashService.cs +++ /dev/null @@ -1,675 +0,0 @@ -using MediaBrowser.Common.IO; -using MediaBrowser.Common.Net; -using MediaBrowser.Controller.Channels; -using MediaBrowser.Controller.Configuration; -using MediaBrowser.Controller.Devices; -using MediaBrowser.Controller.Dlna; -using MediaBrowser.Controller.Library; -using MediaBrowser.Controller.LiveTv; -using MediaBrowser.Controller.MediaEncoding; -using MediaBrowser.Controller.Net; -using MediaBrowser.Model.IO; -using ServiceStack; -using System; -using System.Collections.Generic; -using System.Globalization; -using System.IO; -using System.Linq; -using System.Security; -using System.Text; -using System.Threading; -using System.Threading.Tasks; -using MimeTypes = MediaBrowser.Model.Net.MimeTypes; - -namespace MediaBrowser.Api.Playback.Hls -{ - /// <summary> - /// Options is needed for chromecast. Threw Head in there since it's related - /// </summary> - [Route("/Videos/{Id}/master.mpd", "GET", Summary = "Gets a video stream using Mpeg dash.")] - [Route("/Videos/{Id}/master.mpd", "HEAD", Summary = "Gets a video stream using Mpeg dash.")] - public class GetMasterManifest : VideoStreamRequest - { - public bool EnableAdaptiveBitrateStreaming { get; set; } - - public GetMasterManifest() - { - EnableAdaptiveBitrateStreaming = true; - } - } - - [Route("/Videos/{Id}/dash/{SegmentId}.ts", "GET")] - [Route("/Videos/{Id}/dash/{SegmentId}.mp4", "GET")] - public class GetDashSegment : VideoStreamRequest - { - /// <summary> - /// Gets or sets the segment id. - /// </summary> - /// <value>The segment id.</value> - public string SegmentId { get; set; } - } - - public class MpegDashService : BaseHlsService - { - public MpegDashService(IServerConfigurationManager serverConfig, IUserManager userManager, ILibraryManager libraryManager, IIsoManager isoManager, IMediaEncoder mediaEncoder, IFileSystem fileSystem, ILiveTvManager liveTvManager, IDlnaManager dlnaManager, IChannelManager channelManager, ISubtitleEncoder subtitleEncoder, IDeviceManager deviceManager, INetworkManager networkManager) : base(serverConfig, userManager, libraryManager, isoManager, mediaEncoder, fileSystem, liveTvManager, dlnaManager, channelManager, subtitleEncoder, deviceManager) - { - NetworkManager = networkManager; - } - - protected INetworkManager NetworkManager { get; private set; } - - public object Get(GetMasterManifest request) - { - var result = GetAsync(request, "GET").Result; - - return result; - } - - public object Head(GetMasterManifest request) - { - var result = GetAsync(request, "HEAD").Result; - - return result; - } - - private async Task<object> GetAsync(GetMasterManifest request, string method) - { - if (string.Equals(request.AudioCodec, "copy", StringComparison.OrdinalIgnoreCase)) - { - throw new ArgumentException("Audio codec copy is not allowed here."); - } - - if (string.Equals(request.VideoCodec, "copy", StringComparison.OrdinalIgnoreCase)) - { - throw new ArgumentException("Video codec copy is not allowed here."); - } - - if (string.IsNullOrEmpty(request.MediaSourceId)) - { - throw new ArgumentException("MediaSourceId is required"); - } - - var state = await GetState(request, CancellationToken.None).ConfigureAwait(false); - - var playlistText = string.Empty; - - if (string.Equals(method, "GET", StringComparison.OrdinalIgnoreCase)) - { - playlistText = GetManifestText(state); - } - - return ResultFactory.GetResult(playlistText, MimeTypes.GetMimeType("playlist.mpd"), new Dictionary<string, string>()); - } - - private string GetManifestText(StreamState state) - { - var builder = new StringBuilder(); - - var time = TimeSpan.FromTicks(state.RunTimeTicks.Value); - - var duration = "PT" + time.Hours.ToString("00", UsCulture) + "H" + time.Minutes.ToString("00", UsCulture) + "M" + time.Seconds.ToString("00", UsCulture) + ".00S"; - - builder.Append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>"); - - var profile = string.Equals(GetSegmentFileExtension(state), ".ts", StringComparison.OrdinalIgnoreCase) - ? "urn:mpeg:dash:profile:mp2t-simple:2011" - : "urn:mpeg:dash:profile:mp2t-simple:2011"; - - builder.AppendFormat( - "<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=\""+profile+"\">", - duration, - state.SegmentLength.ToString(CultureInfo.InvariantCulture)); - - builder.Append("<ProgramInformation moreInformationURL=\"http://gpac.sourceforge.net\">"); - builder.Append("</ProgramInformation>"); - - builder.AppendFormat("<Period start=\"PT0S\" duration=\"{0}\">", duration); - builder.Append("<AdaptationSet segmentAlignment=\"true\">"); - - builder.Append("<ContentComponent id=\"1\" contentType=\"video\"/>"); - - var lang = state.AudioStream != null ? state.AudioStream.Language : null; - if (string.IsNullOrWhiteSpace(lang)) lang = "und"; - - builder.AppendFormat("<ContentComponent id=\"2\" contentType=\"audio\" lang=\"{0}\"/>", lang); - - builder.Append(GetRepresentationOpenElement(state, lang)); - - AppendSegmentList(state, builder); - - builder.Append("</Representation>"); - builder.Append("</AdaptationSet>"); - builder.Append("</Period>"); - - builder.Append("</MPD>"); - - return builder.ToString(); - } - - private string GetRepresentationOpenElement(StreamState state, string language) - { - var codecs = GetVideoCodecDescriptor(state) + "," + GetAudioCodecDescriptor(state); - - var mime = string.Equals(GetSegmentFileExtension(state), ".ts", StringComparison.OrdinalIgnoreCase) - ? "video/mp2t" - : "video/mp4"; - - var xml = "<Representation id=\"1\" mimeType=\"" + mime + "\" startWithSAP=\"1\" codecs=\"" + codecs + "\""; - - if (state.OutputWidth.HasValue) - { - xml += " width=\"" + state.OutputWidth.Value.ToString(UsCulture) + "\""; - } - if (state.OutputHeight.HasValue) - { - xml += " height=\"" + state.OutputHeight.Value.ToString(UsCulture) + "\""; - } - if (state.OutputAudioSampleRate.HasValue) - { - xml += " sampleRate=\"" + state.OutputAudioSampleRate.Value.ToString(UsCulture) + "\""; - } - - if (state.TotalOutputBitrate.HasValue) - { - xml += " bandwidth=\"" + state.TotalOutputBitrate.Value.ToString(UsCulture) + "\""; - } - - xml += ">"; - - return xml; - } - - private string GetVideoCodecDescriptor(StreamState state) - { - // https://developer.apple.com/library/ios/documentation/networkinginternet/conceptual/streamingmediaguide/FrequentlyAskedQuestions/FrequentlyAskedQuestions.html - // http://www.chipwreck.de/blog/2010/02/25/html-5-video-tag-and-attributes/ - - var level = state.TargetVideoLevel ?? 0; - var profile = state.TargetVideoProfile ?? string.Empty; - - if (profile.IndexOf("high", StringComparison.OrdinalIgnoreCase) != -1) - { - if (level >= 4.1) - { - return "avc1.640028"; - } - - if (level >= 4) - { - return "avc1.640028"; - } - - return "avc1.64001f"; - } - - if (profile.IndexOf("main", StringComparison.OrdinalIgnoreCase) != -1) - { - if (level >= 4) - { - return "avc1.4d0028"; - } - - if (level >= 3.1) - { - return "avc1.4d001f"; - } - - return "avc1.4d001e"; - } - - if (level >= 3.1) - { - return "avc1.42001f"; - } - - return "avc1.42E01E"; - } - - private string GetAudioCodecDescriptor(StreamState state) - { - // https://developer.apple.com/library/ios/documentation/networkinginternet/conceptual/streamingmediaguide/FrequentlyAskedQuestions/FrequentlyAskedQuestions.html - - if (string.Equals(state.OutputAudioCodec, "mp3", StringComparison.OrdinalIgnoreCase)) - { - return "mp4a.40.34"; - } - - // AAC 5ch - if (state.OutputAudioChannels.HasValue && state.OutputAudioChannels.Value >= 5) - { - return "mp4a.40.5"; - } - - // AAC 2ch - return "mp4a.40.2"; - } - - public object Get(GetDashSegment request) - { - return GetDynamicSegment(request, request.SegmentId).Result; - } - - private void AppendSegmentList(StreamState state, StringBuilder builder) - { - var extension = GetSegmentFileExtension(state); - - var seconds = TimeSpan.FromTicks(state.RunTimeTicks ?? 0).TotalSeconds; - - var queryStringIndex = Request.RawUrl.IndexOf('?'); - var queryString = queryStringIndex == -1 ? string.Empty : Request.RawUrl.Substring(queryStringIndex); - - var index = 0; - builder.Append("<SegmentList timescale=\"1000\" duration=\"10000\">"); - - - while (seconds > 0) - { - var segmentUrl = string.Format("dash/{0}{1}{2}", - index.ToString(UsCulture), - extension, - SecurityElement.Escape(queryString)); - - if (index == 0) - { - builder.AppendFormat("<Initialization sourceURL=\"{0}\"/>", segmentUrl); - } - else - { - builder.AppendFormat("<SegmentURL media=\"{0}\"/>", segmentUrl); - } - - seconds -= state.SegmentLength; - index++; - } - builder.Append("</SegmentList>"); - } - - private async Task<object> GetDynamicSegment(VideoStreamRequest request, string segmentId) - { - if ((request.StartTimeTicks ?? 0) > 0) - { - throw new ArgumentException("StartTimeTicks is not allowed."); - } - - var cancellationTokenSource = new CancellationTokenSource(); - var cancellationToken = cancellationTokenSource.Token; - - var index = int.Parse(segmentId, NumberStyles.Integer, UsCulture); - - var state = await GetState(request, cancellationToken).ConfigureAwait(false); - - var playlistPath = Path.ChangeExtension(state.OutputFilePath, ".m3u8"); - - var segmentExtension = GetSegmentFileExtension(state); - - var segmentPath = GetSegmentPath(playlistPath, segmentExtension, index); - var segmentLength = state.SegmentLength; - - TranscodingJob job = null; - - if (File.Exists(segmentPath)) - { - return await GetSegmentResult(playlistPath, segmentPath, index, segmentLength, job, cancellationToken).ConfigureAwait(false); - } - - await ApiEntryPoint.Instance.TranscodingStartLock.WaitAsync(cancellationTokenSource.Token).ConfigureAwait(false); - try - { - if (File.Exists(segmentPath)) - { - return await GetSegmentResult(playlistPath, segmentPath, index, segmentLength, job, cancellationToken).ConfigureAwait(false); - } - else - { - var currentTranscodingIndex = GetCurrentTranscodingIndex(playlistPath, segmentExtension); - - if (currentTranscodingIndex == null || index < currentTranscodingIndex.Value || (index - currentTranscodingIndex.Value) > 4) - { - // If the playlist doesn't already exist, startup ffmpeg - try - { - ApiEntryPoint.Instance.KillTranscodingJobs(j => j.Type == TranscodingJobType && string.Equals(j.DeviceId, request.DeviceId, StringComparison.OrdinalIgnoreCase), p => !string.Equals(p, playlistPath, StringComparison.OrdinalIgnoreCase)); - - if (currentTranscodingIndex.HasValue) - { - DeleteLastFile(playlistPath, segmentExtension, 0); - } - - var startSeconds = index * state.SegmentLength; - request.StartTimeTicks = TimeSpan.FromSeconds(startSeconds).Ticks; - - job = await StartFfMpeg(state, playlistPath, cancellationTokenSource, Path.GetDirectoryName(playlistPath)).ConfigureAwait(false); - } - catch - { - state.Dispose(); - throw; - } - - await WaitForMinimumSegmentCount(playlistPath, 2, cancellationTokenSource.Token).ConfigureAwait(false); - } - } - } - finally - { - ApiEntryPoint.Instance.TranscodingStartLock.Release(); - } - - Logger.Info("waiting for {0}", segmentPath); - while (!File.Exists(segmentPath)) - { - await Task.Delay(50, cancellationToken).ConfigureAwait(false); - } - - Logger.Info("returning {0}", segmentPath); - job = job ?? ApiEntryPoint.Instance.GetTranscodingJob(playlistPath, TranscodingJobType); - return await GetSegmentResult(playlistPath, segmentPath, index, segmentLength, job, cancellationToken).ConfigureAwait(false); - } - - private async Task<object> GetSegmentResult(string playlistPath, - string segmentPath, - int segmentIndex, - int segmentLength, - TranscodingJob transcodingJob, - CancellationToken cancellationToken) - { - // If all transcoding has completed, just return immediately - if (!IsTranscoding(playlistPath)) - { - return GetSegmentResult(segmentPath, segmentIndex, segmentLength, transcodingJob); - } - - var segmentFilename = Path.GetFileName(segmentPath); - - using (var fileStream = FileSystem.GetFileStream(playlistPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite, true)) - { - using (var reader = new StreamReader(fileStream)) - { - var text = await reader.ReadToEndAsync().ConfigureAwait(false); - - // If it appears in the playlist, it's done - if (text.IndexOf(segmentFilename, StringComparison.OrdinalIgnoreCase) != -1) - { - return GetSegmentResult(segmentPath, segmentIndex, segmentLength, transcodingJob); - } - } - } - - // if a different file is encoding, it's done - //var currentTranscodingIndex = GetCurrentTranscodingIndex(playlistPath); - //if (currentTranscodingIndex > segmentIndex) - //{ - //return GetSegmentResult(segmentPath, segmentIndex); - //} - - // Wait for the file to stop being written to, then stream it - var length = new FileInfo(segmentPath).Length; - var eofCount = 0; - - while (eofCount < 10) - { - var info = new FileInfo(segmentPath); - - if (!info.Exists) - { - break; - } - - var newLength = info.Length; - - if (newLength == length) - { - eofCount++; - } - else - { - eofCount = 0; - } - - length = newLength; - await Task.Delay(100, cancellationToken).ConfigureAwait(false); - } - - return GetSegmentResult(segmentPath, segmentIndex, segmentLength, transcodingJob); - } - - private object GetSegmentResult(string segmentPath, int index, int segmentLength, TranscodingJob transcodingJob) - { - var segmentEndingSeconds = (1 + index) * segmentLength; - var segmentEndingPositionTicks = TimeSpan.FromSeconds(segmentEndingSeconds).Ticks; - - return ResultFactory.GetStaticFileResult(Request, new StaticFileResultOptions - { - Path = segmentPath, - FileShare = FileShare.ReadWrite, - OnComplete = () => - { - if (transcodingJob != null) - { - transcodingJob.DownloadPositionTicks = Math.Max(transcodingJob.DownloadPositionTicks ?? segmentEndingPositionTicks, segmentEndingPositionTicks); - } - - } - }); - } - - private bool IsTranscoding(string playlistPath) - { - var job = ApiEntryPoint.Instance.GetTranscodingJob(playlistPath, TranscodingJobType); - - return job != null && !job.HasExited; - } - - public int? GetCurrentTranscodingIndex(string playlist, string segmentExtension) - { - var file = GetLastTranscodingFile(playlist, segmentExtension, FileSystem); - - if (file == null) - { - return null; - } - - var playlistFilename = Path.GetFileNameWithoutExtension(playlist); - - var indexString = Path.GetFileNameWithoutExtension(file.Name).Substring(playlistFilename.Length); - - return int.Parse(indexString, NumberStyles.Integer, UsCulture); - } - - private void DeleteLastFile(string path, string segmentExtension, int retryCount) - { - if (retryCount >= 5) - { - return; - } - - var file = GetLastTranscodingFile(path, segmentExtension, FileSystem); - - if (file != null) - { - try - { - FileSystem.DeleteFile(file.FullName); - } - catch (IOException ex) - { - Logger.ErrorException("Error deleting partial stream file(s) {0}", ex, file.FullName); - - Thread.Sleep(100); - DeleteLastFile(path, segmentExtension, retryCount + 1); - } - catch (Exception ex) - { - Logger.ErrorException("Error deleting partial stream file(s) {0}", ex, file.FullName); - } - } - } - - private static FileInfo GetLastTranscodingFile(string playlist, string segmentExtension, IFileSystem fileSystem) - { - var folder = Path.GetDirectoryName(playlist); - - try - { - return new DirectoryInfo(folder) - .EnumerateFiles("*", SearchOption.TopDirectoryOnly) - .Where(i => string.Equals(i.Extension, segmentExtension, StringComparison.OrdinalIgnoreCase)) - .OrderByDescending(fileSystem.GetLastWriteTimeUtc) - .FirstOrDefault(); - } - catch (DirectoryNotFoundException) - { - return null; - } - } - - protected override int GetStartNumber(StreamState state) - { - return GetStartNumber(state.VideoRequest); - } - - private int GetStartNumber(VideoStreamRequest request) - { - var segmentId = "0"; - - var segmentRequest = request as GetDynamicHlsVideoSegment; - if (segmentRequest != null) - { - segmentId = segmentRequest.SegmentId; - } - - return int.Parse(segmentId, NumberStyles.Integer, UsCulture); - } - - private string GetSegmentPath(string playlist, string segmentExtension, int index) - { - var folder = Path.GetDirectoryName(playlist); - - var filename = Path.GetFileNameWithoutExtension(playlist); - - return Path.Combine(folder, filename + index.ToString("000", UsCulture) + segmentExtension); - } - - protected override string GetAudioArguments(StreamState state) - { - var codec = state.OutputAudioCodec; - - if (codec.Equals("copy", StringComparison.OrdinalIgnoreCase)) - { - return "-codec:a:0 copy"; - } - - var args = "-codec:a:0 " + codec; - - var channels = state.OutputAudioChannels; - - if (channels.HasValue) - { - args += " -ac " + channels.Value; - } - - var bitrate = state.OutputAudioBitrate; - - if (bitrate.HasValue) - { - args += " -ab " + bitrate.Value.ToString(UsCulture); - } - - args += " " + GetAudioFilterParam(state, true); - - return args; - } - - protected override string GetVideoArguments(StreamState state) - { - var codec = state.OutputVideoCodec; - - var args = "-codec:v:0 " + codec; - - if (state.EnableMpegtsM2TsMode) - { - args += " -mpegts_m2ts_mode 1"; - } - - // See if we can save come cpu cycles by avoiding encoding - if (codec.Equals("copy", StringComparison.OrdinalIgnoreCase)) - { - return state.VideoStream != null && IsH264(state.VideoStream) ? - args + " -bsf:v h264_mp4toannexb" : - args; - } - - var keyFrameArg = string.Format(" -force_key_frames expr:gte(t,n_forced*{0})", - state.SegmentLength.ToString(UsCulture)); - - var hasGraphicalSubs = state.SubtitleStream != null && !state.SubtitleStream.IsTextSubtitleStream; - - args+= " " + GetVideoQualityParam(state, H264Encoder, true) + keyFrameArg; - - args += " -r 24 -g 24"; - - // Add resolution params, if specified - if (!hasGraphicalSubs) - { - args += GetOutputSizeParam(state, codec, false); - } - - // This is for internal graphical subs - if (hasGraphicalSubs) - { - args += GetGraphicalSubtitleParam(state, codec); - } - - return args; - } - - protected override string GetCommandLineArguments(string outputPath, string transcodingJobId, StreamState state, bool isEncoding) - { - // test url http://192.168.1.2:8096/videos/233e8905d559a8f230db9bffd2ac9d6d/master.mpd?mediasourceid=233e8905d559a8f230db9bffd2ac9d6d&videocodec=h264&audiocodec=aac&maxwidth=1280&videobitrate=500000&audiobitrate=128000&profile=baseline&level=3 - // Good info on i-frames http://blog.streamroot.io/encode-multi-bitrate-videos-mpeg-dash-mse-based-media-players/ - - var threads = GetNumberOfThreads(state, false); - - var inputModifier = GetInputModifier(state); - - // If isEncoding is true we're actually starting ffmpeg - var startNumberParam = isEncoding ? GetStartNumber(state).ToString(UsCulture) : "0"; - - var segmentFilename = Path.GetFileNameWithoutExtension(outputPath) + "%03d" + GetSegmentFileExtension(state); - - var args = string.Format("{0} {1} -map_metadata -1 -threads {2} {3} {4} -copyts {5} -f ssegment -segment_time {6} -segment_list_size {8} -segment_list \"{9}\" {10}", - inputModifier, - GetInputArgument(transcodingJobId, state), - threads, - GetMapArgs(state), - GetVideoArguments(state), - GetAudioArguments(state), - state.SegmentLength.ToString(UsCulture), - startNumberParam, - state.HlsListSize.ToString(UsCulture), - outputPath, - segmentFilename - ).Trim(); - - return args; - } - - /// <summary> - /// Gets the segment file extension. - /// </summary> - /// <param name="state">The state.</param> - /// <returns>System.String.</returns> - protected override string GetSegmentFileExtension(StreamState state) - { - return ".mp4"; - } - - protected override TranscodingJobType TranscodingJobType - { - get - { - return TranscodingJobType.Dash; - } - } - } -} |