Пример #1
0
        public Resolution CalculateSize(TranscoderProfile profile, MediaSource source, WebMediaInfo info = null)
        {
            try
            {
                if (!profile.HasVideoStream)
                {
                    return(new Resolution(0, 0));
                }

                if (info == null)
                {
                    info = MediaInfoHelper.LoadMediaInfoOrSurrogate(source);
                }

                if (info.VideoStreams.Count > 0)
                {
                    var res = Resolution.Calculate(info.VideoStreams.First().DisplayAspectRatio, profile.MaxOutputWidth, profile.MaxOutputHeight, 2);
                    if (res.Width == 0 && res.Height == 0)
                    {
                        return(new Resolution(info.VideoStreams.First().Width, info.VideoStreams.First().Height));
                    }
                    return(res);
                }
            }
            catch (Exception ex)
            {
                Log.Warn("Failed to calculate size of output stream", ex);
            }

            // default
            return(Resolution.Calculate(MediaInfoHelper.DEFAULT_ASPECT_RATIO, profile.MaxOutputWidth, profile.MaxOutputHeight, 2));
        }
Пример #2
0
        public Stream Download(string clientDescription, WebMediaType type, int?provider, string itemId, long?position)
        {
            // validate source first
            MediaSource source = new MediaSource(type, provider, itemId);

            if (!source.Exists)
            {
                throw new FileNotFoundException();
            }

            // create context
            DownloadContext context = new DownloadContext()
            {
                ClientDescription = clientDescription,
                Source            = source,
                StartTime         = DateTime.Now,
                Stream            = new ReadTrackingStreamWrapper(source.Retrieve()),
                MediaInfo         = MediaInfoHelper.LoadMediaInfoOrSurrogate(source) // for playerposition view
            };

            // seek to start position if wanted/needed
            if (position != null && position > 0)
            {
                if (context.Stream.CanSeek)
                {
                    context.Stream.Seek(position.Value, SeekOrigin.Begin);
                }
                else
                {
                    Log.Warn("Download: Cannot seek on stream, failed to set start position to {0}", position);
                }
            }

            // see comment in Streaming.cs:151
            string realIp = WCFUtil.GetHeaderValue("forwardedFor", "X-Forwarded-For");

            context.ClientIP = realIp == null?WCFUtil.GetClientIPAddress() : String.Format("{0} (via {1})", realIp, WCFUtil.GetClientIPAddress());

            // set headers for downloading
            WCFUtil.AddHeader("Content-Disposition", "attachment; filename=\"" + source.GetFileInfo().Name + "\"");
            if (source.MediaType != WebMediaType.TV)
            {
                WCFUtil.SetContentLength(source.GetFileInfo().Size);
            }

            // FIXME: there has to be a better way to do this
            string mime = MIME.GetFromFilename(source.GetFileInfo().Name);

            if (mime != null)
            {
                WCFUtil.SetContentType(mime);
            }

            // finally, save the context and return
            runningDownloads.Add(context);
            return(context.Stream);
        }
Пример #3
0
        public string StartStream(string identifier, TranscoderProfile profile, int 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)
            {
                Log.Warn("Stream requested for non-existent profile");
                return(null);
            }

            try
            {
                lock (Streams[identifier])
                {
                    Log.Trace("StartStream called with identifier {0}", identifier);

                    // initialize stream and context
                    ActiveStream stream = Streams[identifier];
                    stream.Context.StartPosition = position;
                    stream.Context.Profile       = profile;
                    stream.Context.MediaInfo     = MediaInfoHelper.LoadMediaInfoOrSurrogate(stream.Context.Source);
                    stream.Context.OutputSize    = CalculateSize(stream.Context);
                    Reference <WebTranscodingInfo> infoRef = new Reference <WebTranscodingInfo>(() => stream.Context.TranscodingInfo, x => { stream.Context.TranscodingInfo = x; });
                    Log.Trace("Using {0} as output size for stream {1}", stream.Context.OutputSize, identifier);
                    sharing.StartStream(stream.Context, infoRef);

                    // get transcoder
                    stream.Transcoder            = profile.GetTranscoder();
                    stream.Transcoder.Identifier = identifier;

                    // get audio and subtitle id
                    if (stream.Context.MediaInfo.AudioStreams.Where(x => x.ID == audioId).Count() > 0)
                    {
                        stream.Context.AudioTrackId = stream.Context.MediaInfo.AudioStreams.Where(x => x.ID == audioId).First().ID;
                    }
                    else if (audioId == STREAM_DEFAULT)
                    {
                        string preferredLanguage = Configuration.Streaming.DefaultAudioStream;
                        if (stream.Context.MediaInfo.AudioStreams.Count(x => x.Language == preferredLanguage) > 0)
                        {
                            stream.Context.AudioTrackId = stream.Context.MediaInfo.AudioStreams.First(x => x.Language == preferredLanguage).ID;
                        }
                        else if (preferredLanguage != "none" && stream.Context.MediaInfo.AudioStreams.Count() > 0)
                        {
                            stream.Context.AudioTrackId = stream.Context.MediaInfo.AudioStreams.First().ID;
                        }
                    }

                    if (stream.Context.MediaInfo.SubtitleStreams.Where(x => x.ID == subtitleId).Count() > 0)
                    {
                        stream.Context.SubtitleTrackId = stream.Context.MediaInfo.SubtitleStreams.Where(x => x.ID == subtitleId).First().ID;
                    }
                    else if (subtitleId == STREAM_DEFAULT)
                    {
                        string preferredLanguage = Configuration.Streaming.DefaultSubtitleStream;
                        if (stream.Context.MediaInfo.SubtitleStreams.Count(x => x.Language == preferredLanguage) > 0)
                        {
                            stream.Context.SubtitleTrackId = stream.Context.MediaInfo.SubtitleStreams.First(x => x.Language == preferredLanguage).ID;
                        }
                        else if (preferredLanguage == "external" && stream.Context.MediaInfo.SubtitleStreams.Count(x => x.Filename != null) > 0)
                        {
                            stream.Context.SubtitleTrackId = stream.Context.MediaInfo.SubtitleStreams.First(x => x.Filename != null).ID;
                        }
                        else if (preferredLanguage == "first" && stream.Context.MediaInfo.SubtitleStreams.Count() > 0)
                        {
                            stream.Context.SubtitleTrackId = stream.Context.MediaInfo.SubtitleStreams.First().ID;
                        }
                    }
                    Log.Debug("Final stream selection: audioId={0}, subtitleId={1}", stream.Context.AudioTrackId, stream.Context.SubtitleTrackId);

                    // build the pipeline
                    stream.Context.Pipeline        = new Pipeline();
                    stream.Context.TranscodingInfo = new WebTranscodingInfo();
                    stream.Transcoder.BuildPipeline(stream.Context);

                    // start the processes and retrieve output stream
                    stream.Context.Pipeline.Assemble();
                    stream.Context.Pipeline.Start();

                    Stream finalStream = Streams[identifier].Context.Pipeline.GetFinalStream();
                    if (finalStream != null)
                    {
                        Streams[identifier].OutputStream = new ReadTrackingStreamWrapper(finalStream);
                    }

                    Log.Info("Started stream with identifier " + identifier);
                    return(stream.Transcoder.GetStreamURL());
                }
            }
            catch (Exception ex)
            {
                Log.Error("Failed to start stream " + identifier, ex);
                return(null);
            }
        }
Пример #4
0
        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);
            }
        }