public bool Stop(bool force) { if (IsStopped) { return(true); } if (!IsStarted && !force) { Start(); } foreach (int i in dataUnits.Keys.OrderBy(k => k)) { StreamLog.Info(identifier, "Stopping data unit {0}", i); dataUnits[i].Stop(); } foreach (int i in logUnits.Keys.OrderBy(k => k)) { logUnits[i].Stop(); } StreamLog.Debug(identifier, "Pipeline stopped"); IsStopped = true; return(true); }
public bool Start() { if (!IsAssembled) { Assemble(); } IsStarted = true; foreach (int i in dataUnits.Keys.OrderBy(k => k)) { StreamLog.Info(identifier, "Starting data unit {0}", i); if (!dataUnits[i].Start()) { StreamLog.Error(identifier, "Starting data unit {0} failed", i); Stop(true); return(false); } } StreamLog.Info(identifier, "All data units started!"); foreach (int i in logUnits.Keys.OrderBy(k => k)) { logUnits[i].Start(); } return(true); }
private void TimeoutStreamsTick(object source, ElapsedEventArgs args) { try { var toDelete = Streams .Where(x => (x.Value.UseActivityForTimeout || (x.Value.OutputStream != null && x.Value.OutputStream.TimeSinceLastRead > (x.Value.Timeout * 1000))) && (x.Value.LastActivity.Add(TimeSpan.FromSeconds(x.Value.Timeout)) < DateTime.Now) ) .Select(x => x.Value.Identifier) .ToList(); if (toDelete.Count > 0) { foreach (string key in toDelete) { // The stream could've been terminated between the moment we decide it should be terminated and we get here. if (!Streams.ContainsKey(key)) { continue; } if (Streams[key].UseActivityForTimeout) { StreamLog.Info(key, "Stream had last service activity at {0}, so cancel it", Streams[key].LastActivity); } else { StreamLog.Info(key, "Stream had last read {0} milliseconds ago (read {1} bytes in total) and last service activity at {2}, so cancel it", Streams[key].OutputStream.TimeSinceLastRead, Streams[key].OutputStream.ReadBytes, Streams[key].LastActivity); } service.FinishStream(key); } } } catch (Exception ex) { Log.Warn("Error in TimeoutStreamsTick", ex); } }
public string StartStream(string identifier, TranscoderProfile profile, long position = 0, int audioId = STREAM_DEFAULT, int subtitleId = STREAM_DEFAULT) { // there's a theoretical race condition here between the insert in InitStream() and this, but the client should really, really // always have a positive result from InitStream() before continuing, so their bad that the stream failed. if (!Streams.ContainsKey(identifier) || Streams[identifier] == null) { Log.Warn("Stream requested for invalid identifier {0}", identifier); return(null); } if (profile == null) { StreamLog.Warn(identifier, "Stream requested for non-existent profile"); return(null); } try { lock (Streams[identifier]) { StreamLog.Debug(identifier, "StartStream for file {0}", Streams[identifier].Context.Source.GetDebugName()); // initialize stream and context ActiveStream stream = Streams[identifier]; stream.Context.StartPosition = position; stream.Context.Profile = profile; stream.UseActivityForTimeout = profile.Transport == "httplive"; stream.Context.MediaInfo = MediaInfoHelper.LoadMediaInfoOrSurrogate(stream.Context.Source); stream.Context.OutputSize = CalculateSize(stream.Context); StreamLog.Debug(identifier, "Using {0} as output size for stream {1}", stream.Context.OutputSize, identifier); Reference <WebTranscodingInfo> infoRef = new Reference <WebTranscodingInfo>(() => stream.Context.TranscodingInfo, x => { stream.Context.TranscodingInfo = x; }); sharing.StartStream(stream.Context, infoRef); // get transcoder stream.Transcoder = (ITranscoder)Activator.CreateInstance(Type.GetType(profile.Transcoder)); stream.Transcoder.Identifier = identifier; stream.Transcoder.Context = stream.Context; // get audio and subtitle id if (stream.Context.MediaInfo.AudioStreams.Any(x => x.ID == audioId)) { stream.Context.AudioTrackId = stream.Context.MediaInfo.AudioStreams.First(x => x.ID == audioId).ID; } else if (audioId == STREAM_DEFAULT) { string preferredLanguage = Configuration.Streaming.DefaultAudioStream; if (stream.Context.MediaInfo.AudioStreams.Any(x => x.Language == preferredLanguage)) { stream.Context.AudioTrackId = stream.Context.MediaInfo.AudioStreams.First(x => x.Language == preferredLanguage).ID; } else if (preferredLanguage != "none" && stream.Context.MediaInfo.AudioStreams.Any()) { stream.Context.AudioTrackId = stream.Context.MediaInfo.AudioStreams.First().ID; } } if (stream.Context.MediaInfo.SubtitleStreams.Any(x => x.ID == subtitleId)) { stream.Context.SubtitleTrackId = stream.Context.MediaInfo.SubtitleStreams.First(x => x.ID == subtitleId).ID; } else if (subtitleId == STREAM_DEFAULT) { string preferredLanguage = Configuration.Streaming.DefaultSubtitleStream; if (stream.Context.MediaInfo.SubtitleStreams.Any(x => x.Language == preferredLanguage)) { stream.Context.SubtitleTrackId = stream.Context.MediaInfo.SubtitleStreams.First(x => x.Language == preferredLanguage).ID; } else if (preferredLanguage == "external" && stream.Context.MediaInfo.SubtitleStreams.Any(x => x.Filename != null)) { stream.Context.SubtitleTrackId = stream.Context.MediaInfo.SubtitleStreams.First(x => x.Filename != null).ID; } else if (preferredLanguage == "first" && stream.Context.MediaInfo.SubtitleStreams.Any()) { stream.Context.SubtitleTrackId = stream.Context.MediaInfo.SubtitleStreams.First().ID; } } StreamLog.Debug(identifier, "Final stream selection: audioId={0}, subtitleId={1}", stream.Context.AudioTrackId, stream.Context.SubtitleTrackId); // build the pipeline stream.Context.Pipeline = new Pipeline(identifier); stream.Context.TranscodingInfo = new WebTranscodingInfo(); stream.Transcoder.BuildPipeline(); // start the pipeline, but imm bool assembleResult = stream.Context.Pipeline.Assemble(); bool startResult = assembleResult ? stream.Context.Pipeline.Start() : true; if (!assembleResult || !startResult) { StreamLog.Warn(identifier, "Starting pipeline failed"); return(null); } // get the final stream and return it Stream finalStream = Streams[identifier].Context.Pipeline.GetFinalStream(); if (finalStream != null) { Streams[identifier].OutputStream = new ReadTrackingStreamWrapper(finalStream); } StreamLog.Info(identifier, "Started stream"); Streams[identifier].LastActivity = DateTime.Now; return(stream.Transcoder.GetStreamURL()); } } catch (Exception ex) { StreamLog.Error(identifier, "Failed to start stream", ex); return(null); } }
public bool Assemble() { IsAssembled = true; Dictionary <int, int> dataConnections = new Dictionary <int, int>(); Dictionary <int, int> logConnections = new Dictionary <int, int>(); int lastKey = -1; foreach (int i in dataUnits.Keys.OrderBy(k => k)) { if (dataUnits.ContainsKey(lastKey)) { dataConnections[lastKey] = i; dataUnits[i].IsInputStreamConnected = true; dataUnits[lastKey].IsDataStreamConnected = true; } lastKey = i; } foreach (int i in logUnits.Keys.OrderBy(k => k)) { int nr = dataUnits.Keys.Where(k => k < i).DefaultIfEmpty(-1).Max(); if (dataUnits.ContainsKey(nr)) { logConnections[i] = nr; dataUnits[nr].IsLogStreamConnected = true; } } // connect the output of the last one as that's usually captured by the calling app (because else the whole pipeline is just useless) dataUnits[dataUnits.Keys.Max()].IsDataStreamConnected = true; // dump out the pipeline for debugging StreamLog.Info(identifier, "Assembling following pipeline:"); foreach (int i in dataUnits.Keys.OrderBy(k => k)) { StreamLog.Info(identifier, " data {0}: {1} (input {2}, data {3}, log {4})", i, dataUnits[i].ToString(), dataUnits[i].IsInputStreamConnected, dataUnits[i].IsDataStreamConnected, dataUnits[i].IsLogStreamConnected); } foreach (KeyValuePair <int, int> conn in dataConnections) { StreamLog.Info(identifier, " dataconn {0} -> {1}", conn.Key, conn.Value); } foreach (int i in logUnits.Keys.OrderBy(k => k)) { StreamLog.Info(identifier, " log {0}: {1}", i, logUnits[i].ToString()); } foreach (KeyValuePair <int, int> conn in logConnections) { StreamLog.Info(identifier, " logconn {0} -> {1}", conn.Value, conn.Key); } foreach (int i in dataUnits.Keys.OrderBy(k => k)) { if (!dataUnits[i].Setup()) { // it failed, stop and break out StreamLog.Error(identifier, "Setting up data unit {0} failed", i); Stop(true); return(false); } else { StreamLog.Debug(identifier, "Setup data unit {0}", i); } if (dataConnections.ContainsKey(i)) { dataUnits[dataConnections[i]].InputStream = dataUnits[i].DataOutputStream; } } foreach (int i in logUnits.Keys.OrderBy(k => k)) { if (logConnections.ContainsKey(i)) { logUnits[i].InputStream = dataUnits[logConnections[i]].LogOutputStream; } logUnits[i].Setup(); StreamLog.Debug(identifier, "Setup log unit {0}", i); } StreamLog.Info(identifier, "Pipeline assembled"); return(true); }