C# Dto.MediaSourceInfo类代码示例

        protected override async Task<List<MediaSourceInfo>> GetChannelStreamMediaSources(TunerHostInfo info, string channelId, CancellationToken cancellationToken)
        {
            var urlHash = info.Url.GetMD5().ToString("N");
            var prefix = ChannelIdPrefix + urlHash;
            if (!channelId.StartsWith(prefix, StringComparison.OrdinalIgnoreCase))
            {
                return null;
            }

            var channels = await GetChannels(info, true, cancellationToken).ConfigureAwait(false);
            var m3uchannels = channels.Cast<M3UChannel>();
            var channel = m3uchannels.FirstOrDefault(c => string.Equals(c.Id, channelId, StringComparison.OrdinalIgnoreCase));
            if (channel != null)
            {
                var path = channel.Path;
                MediaProtocol protocol = MediaProtocol.File;
                if (path.StartsWith("http", StringComparison.OrdinalIgnoreCase))
                {
                    protocol = MediaProtocol.Http;
                }
                else if (path.StartsWith("rtmp", StringComparison.OrdinalIgnoreCase))
                {
                    protocol = MediaProtocol.Rtmp;
                }
                else if (path.StartsWith("rtsp", StringComparison.OrdinalIgnoreCase))
                {
                    protocol = MediaProtocol.Rtsp;
                }

                var mediaSource = new MediaSourceInfo
                {
                    Path = channel.Path,
                    Protocol = protocol,
                    MediaStreams = new List<MediaStream>
                    {
                        new MediaStream
                        {
                            Type = MediaStreamType.Video,
                            // Set the index to -1 because we don't know the exact index of the video stream within the container
                            Index = -1,
                            IsInterlaced = true
                        },
                        new MediaStream
                        {
                            Type = MediaStreamType.Audio,
                            // Set the index to -1 because we don't know the exact index of the audio stream within the container
                            Index = -1

                        }
                    },
                    RequiresOpening = false,
                    RequiresClosing = false,

                    ReadAtNativeFramerate = true
                };

                return new List<MediaSourceInfo> { mediaSource };
            }
            return new List<MediaSourceInfo>();
        }

        public MediaSourceInfo ToMediaSource()
        {
            var id = Path.GetMD5().ToString("N");

            var source = new MediaSourceInfo
            {
                MediaStreams = GetMediaStreams(this).ToList(),

                Container = Container,
                Protocol = Protocol,
                Path = Path,
                RequiredHttpHeaders = RequiredHttpHeaders,
                RunTimeTicks = RunTimeTicks,
                Name = id,
                Id = id,
                ReadAtNativeFramerate = ReadAtNativeFramerate
            };

            var bitrate = (AudioBitrate ?? 0) + (VideoBitrate ?? 0);

            if (bitrate > 0)
            {
                source.Bitrate = bitrate;
            }

            return source;
        }

        public async Task Record(MediaSourceInfo mediaSource, string targetFile, TimeSpan duration, Action onStarted, CancellationToken cancellationToken)
        {
            var httpRequestOptions = new HttpRequestOptions()
            {
                Url = mediaSource.Path
            };

            httpRequestOptions.BufferContent = false;

            using (var response = await _httpClient.SendAsync(httpRequestOptions, "GET").ConfigureAwait(false))
            {
                _logger.Info("Opened recording stream from tuner provider");

                using (var output = _fileSystem.GetFileStream(targetFile, FileMode.Create, FileAccess.Write, FileShare.Read))
                {
                    onStarted();

                    _logger.Info("Copying recording stream to file {0}", targetFile);

                    // The media source if infinite so we need to handle stopping ourselves
                    var durationToken = new CancellationTokenSource(duration);
                    cancellationToken = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken, durationToken.Token).Token;

                    await CopyUntilCancelled(response.Content, output, cancellationToken).ConfigureAwait(false);
                }
            }

            _logger.Info("Recording completed to file {0}", targetFile);
        }

        public async Task Record(MediaSourceInfo mediaSource, string targetFile, Action onStarted, CancellationToken cancellationToken)
        {
            _targetPath = targetFile;
            _fileSystem.CreateDirectory(Path.GetDirectoryName(targetFile));

            var process = new Process
            {
                StartInfo = new ProcessStartInfo
                {
                    CreateNoWindow = true,
                    UseShellExecute = false,

                    // Must consume both stdout and stderr or deadlocks may occur
                    RedirectStandardOutput = true,
                    RedirectStandardError = true,
                    RedirectStandardInput = true,

                    FileName = _mediaEncoder.EncoderPath,
                    Arguments = GetCommandLineArgs(mediaSource, targetFile),

                    WindowStyle = ProcessWindowStyle.Hidden,
                    ErrorDialog = false
                },

                EnableRaisingEvents = true
            };

            _process = process;

            var commandLineLogMessage = process.StartInfo.FileName + " " + process.StartInfo.Arguments;
            _logger.Info(commandLineLogMessage);

            var logFilePath = Path.Combine(_appPaths.LogDirectoryPath, "record-transcode-" + Guid.NewGuid() + ".txt");
            _fileSystem.CreateDirectory(Path.GetDirectoryName(logFilePath));

            // FFMpeg writes debug/error info to stderr. This is useful when debugging so let's put it in the log directory.
            _logFileStream = _fileSystem.GetFileStream(logFilePath, FileMode.Create, FileAccess.Write, FileShare.Read, true);

            var commandLineLogMessageBytes = Encoding.UTF8.GetBytes(_json.SerializeToString(mediaSource) + Environment.NewLine + Environment.NewLine + commandLineLogMessage + Environment.NewLine + Environment.NewLine);
            await _logFileStream.WriteAsync(commandLineLogMessageBytes, 0, commandLineLogMessageBytes.Length, cancellationToken).ConfigureAwait(false);

            process.Exited += (sender, args) => OnFfMpegProcessExited(process);

            process.Start();

            cancellationToken.Register(Stop);

            // MUST read both stdout and stderr asynchronously or a deadlock may occurr
            process.BeginOutputReadLine();

            // Important - don't await the log task or we won't be able to kill ffmpeg when the user stops playback
            StartStreamingLog(process.StandardError.BaseStream, _logFileStream);

            // Wait for the file to exist before proceeeding
            while (!_hasExited)
            {
                await Task.Delay(100, cancellationToken).ConfigureAwait(false);
            }
        }

        public async Task Record(MediaSourceInfo mediaSource, string targetFile, TimeSpan duration, Action onStarted, CancellationToken cancellationToken)
        {
            var durationToken = new CancellationTokenSource(duration);
            cancellationToken = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken, durationToken.Token).Token;

            await RecordFromFile(mediaSource, mediaSource.Path, targetFile, duration, onStarted, cancellationToken).ConfigureAwait(false);

            _logger.Info("Recording completed to file {0}", targetFile);
        }

 public HdHomerunLiveStream(MediaSourceInfo mediaSource, string originalStreamId, IFileSystem fileSystem, IHttpClient httpClient, ILogger logger, IServerApplicationPaths appPaths, IServerApplicationHost appHost)
     : base(mediaSource)
 {
     _fileSystem = fileSystem;
     _httpClient = httpClient;
     _logger = logger;
     _appPaths = appPaths;
     _appHost = appHost;
     OriginalStreamId = originalStreamId;
     _multicastStream = new MulticastStream(_logger);
 }

        public async Task RecordInternal(MediaSourceInfo mediaSource, string tempFile, string targetFile, TimeSpan duration, Action onStarted, CancellationToken cancellationToken)
        {
            var httpRequestOptions = new HttpRequestOptions()
            {
                Url = mediaSource.Path
            };

            httpRequestOptions.BufferContent = false;

            using (var response = await _httpClient.SendAsync(httpRequestOptions, "GET").ConfigureAwait(false))
            {
                _logger.Info("Opened recording stream from tuner provider");

                Directory.CreateDirectory(Path.GetDirectoryName(tempFile));

                using (var output = _fileSystem.GetFileStream(tempFile, FileMode.Create, FileAccess.Write, FileShare.Read))
                {
                    //onStarted();

                    _logger.Info("Copying recording stream to file {0}", tempFile);

                    var bufferMs = 5000;

                    if (mediaSource.RunTimeTicks.HasValue)
                    {
                        // The media source already has a fixed duration
                        // But add another stop 1 minute later just in case the recording gets stuck for any reason
                        var durationToken = new CancellationTokenSource(duration.Add(TimeSpan.FromMinutes(1)));
                        cancellationToken = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken, durationToken.Token).Token;
                    }
                    else
                    {
                        // The media source if infinite so we need to handle stopping ourselves
                        var durationToken = new CancellationTokenSource(duration.Add(TimeSpan.FromMilliseconds(bufferMs)));
                        cancellationToken = CancellationTokenSource.CreateLinkedTokenSource(cancellationToken, durationToken.Token).Token;
                    }

                    var tempFileTask = response.Content.CopyToAsync(output, StreamDefaults.DefaultCopyToBufferSize, cancellationToken);

                    // Give the temp file a little time to build up
                    await Task.Delay(bufferMs, cancellationToken).ConfigureAwait(false);

                    var recordTask = Task.Run(() => RecordFromFile(mediaSource, tempFile, targetFile, duration, onStarted, cancellationToken), cancellationToken);

                    await tempFileTask.ConfigureAwait(false);

                    await recordTask.ConfigureAwait(false);
                }
            }

            _logger.Info("Recording completed to file {0}", targetFile);
        }

        public string GetOutputPath(MediaSourceInfo mediaSource, string targetFile)
        {
            if (_liveTvOptions.EnableOriginalAudioWithEncodedRecordings)
            {
                // if the audio is aac_latm, stream copying to mp4 will fail
                var streams = mediaSource.MediaStreams ?? new List<MediaStream>();
                if (streams.Any(i => i.Type == MediaStreamType.Audio && (i.Codec ?? string.Empty).IndexOf("aac", StringComparison.OrdinalIgnoreCase) != -1))
                {
                    return Path.ChangeExtension(targetFile, ".mkv");
                }
            }

            return Path.ChangeExtension(targetFile, ".mp4");
        }

        public void Play(string path, long startPositionTicks, bool isVideo, MediaSourceInfo mediaSource, BaseItemDto item, bool isFullScreen)
        {
            _isFadingOut = false;
            _isVideo = isVideo;

            var forcedVideoRenderer = isFullScreen ? null : "evr";

            if (_player.PlayState != PlayState.Idle)
            {
                _player.Stop();
            }

            _player.Play(path, startPositionTicks, isVideo, item, mediaSource, forcedVideoRenderer);
        }

        private async Task Run(Video item, string itemModifier, MediaSourceInfo mediaSource, int width, CancellationToken cancellationToken)
        {
            if (!HasBif(item, itemModifier, width, mediaSource))
            {
                await BifWriterSemaphore.WaitAsync(cancellationToken).ConfigureAwait(false);

                try
                {
                    if (!HasBif(item, itemModifier, width, mediaSource))
                    {
                        await CreateBif(item, itemModifier, width, mediaSource, cancellationToken).ConfigureAwait(false);
                    }
                }
                finally
                {
                    BifWriterSemaphore.Release();
                }
            }
        }

        public async Task Record(MediaSourceInfo mediaSource, string targetFile, TimeSpan duration, Action onStarted, CancellationToken cancellationToken)
        {
            var tempfile = Path.Combine(_appPaths.TranscodingTempPath, Guid.NewGuid().ToString("N") + ".ts");

            try
            {
                await RecordInternal(mediaSource, tempfile, targetFile, duration, onStarted, cancellationToken)
                        .ConfigureAwait(false);
            }
            finally
            {
                try
                {
                    File.Delete(tempfile);
                }
                catch (Exception ex)
                {
                    _logger.ErrorException("Error deleting recording temp file", ex);
                }
            }
        }

        private void AddMediaSource(List<MediaSourceInfo> list,
            LocalItem item,
            MediaSourceInfo mediaSource,
            IServerSyncProvider provider,
            SyncTarget target)
        {
            SetStaticMediaSourceInfo(item, mediaSource);

            var requiresDynamicAccess = provider as IHasDynamicAccess;

            if (requiresDynamicAccess != null)
            {
                mediaSource.RequiresOpening = true;

                var keyList = new List<string>();
                keyList.Add(provider.GetType().FullName.GetMD5().ToString("N"));
                keyList.Add(target.Id.GetMD5().ToString("N"));
                keyList.Add(item.Id);
                mediaSource.OpenToken = string.Join(StreamIdDelimeterString, keyList.ToArray());
            }

            list.Add(mediaSource);
        }

        public async Task Record(MediaSourceInfo mediaSource, string targetFile, Action onStarted, CancellationToken cancellationToken)
        {
            var httpRequestOptions = new HttpRequestOptions()
            {
                Url = mediaSource.Path
            };

            httpRequestOptions.BufferContent = false;

            using (var response = await _httpClient.SendAsync(httpRequestOptions, "GET").ConfigureAwait(false))
            {
                _logger.Info("Opened recording stream from tuner provider");

                using (var output = _fileSystem.GetFileStream(targetFile, FileMode.Create, FileAccess.Write, FileShare.Read))
                {
                    onStarted();

                    _logger.Info("Copying recording stream to file stream");

                    await response.Content.CopyToAsync(output, StreamDefaults.DefaultCopyToBufferSize, cancellationToken).ConfigureAwait(false);
                }
            }
        }

        private MediaSourceInfo GetMediaSource(TunerHostInfo info, string channelId, string profile)
        {
            int? width = null;
            int? height = null;
            bool isInterlaced = true;
            var videoCodec = !string.IsNullOrWhiteSpace(GetEncodingOptions().HardwareAccelerationType) ? null : "mpeg2video";

            int? videoBitrate = null;

            if (string.Equals(profile, "mobile", StringComparison.OrdinalIgnoreCase))
            {
                width = 1280;
                height = 720;
                isInterlaced = false;
                videoCodec = "h264";
                videoBitrate = 2000000;
            }
            else if (string.Equals(profile, "heavy", StringComparison.OrdinalIgnoreCase))
            {
                width = 1920;
                height = 1080;
                isInterlaced = false;
                videoCodec = "h264";
                videoBitrate = 15000000;
            }
            else if (string.Equals(profile, "internet720", StringComparison.OrdinalIgnoreCase))
            {
                width = 1280;
                height = 720;
                isInterlaced = false;
                videoCodec = "h264";
                videoBitrate = 8000000;
            }
            else if (string.Equals(profile, "internet540", StringComparison.OrdinalIgnoreCase))
            {
                width = 1280;
                height = 720;
                isInterlaced = false;
                videoCodec = "h264";
                videoBitrate = 2500000;
            }
            else if (string.Equals(profile, "internet480", StringComparison.OrdinalIgnoreCase))
            {
                width = 848;
                height = 480;
                isInterlaced = false;
                videoCodec = "h264";
                videoBitrate = 2000000;
            }
            else if (string.Equals(profile, "internet360", StringComparison.OrdinalIgnoreCase))
            {
                width = 640;
                height = 360;
                isInterlaced = false;
                videoCodec = "h264";
                videoBitrate = 1500000;
            }
            else if (string.Equals(profile, "internet240", StringComparison.OrdinalIgnoreCase))
            {
                width = 432;
                height = 240;
                isInterlaced = false;
                videoCodec = "h264";
                videoBitrate = 1000000;
            }

            var url = GetApiUrl(info, true) + "/auto/v" + channelId;

            if (!string.IsNullOrWhiteSpace(profile) && !string.Equals(profile, "native", StringComparison.OrdinalIgnoreCase))
            {
                url += "?transcode=" + profile;
            }

            var mediaSource = new MediaSourceInfo
            {
                Path = url,
                Protocol = MediaProtocol.Http,
                MediaStreams = new List<MediaStream>
                        {
                            new MediaStream
                            {
                                Type = MediaStreamType.Video,
                                // Set the index to -1 because we don't know the exact index of the video stream within the container
                                Index = -1,
                                IsInterlaced = isInterlaced,
                                Codec = videoCodec,
                                Width = width,
                                Height = height,
                                BitRate = videoBitrate
                                
                            },
                            new MediaStream
                            {
                                Type = MediaStreamType.Audio,
                                // Set the index to -1 because we don't know the exact index of the audio stream within the container
                                Index = -1,
                                Codec = "ac3",
                                BitRate = 192000
                            }
                        },
//.........这里部分代码省略.........

        private static MediaSourceInfo GetVersionInfo(bool enablePathSubstitution, Video i, MediaSourceType type)
        {
            var mediaStreams = MediaSourceManager.GetMediaStreams(i.Id)
                .ToList();

            var locationType = i.LocationType;

            var info = new MediaSourceInfo
            {
                Id = i.Id.ToString("N"),
                IsoType = i.IsoType,
                Protocol = locationType == LocationType.Remote ? MediaProtocol.Http : MediaProtocol.File,
                MediaStreams = mediaStreams,
                Name = GetMediaSourceName(i, mediaStreams),
                Path = enablePathSubstitution ? GetMappedPath(i.Path, locationType) : i.Path,
                RunTimeTicks = i.RunTimeTicks,
                Video3DFormat = i.Video3DFormat,
                VideoType = i.VideoType,
                Container = i.Container,
                Size = i.Size,
                Timestamp = i.Timestamp,
                Type = type,
                PlayableStreamFileNames = i.PlayableStreamFileNames.ToList(),
                SupportsDirectStream = i.VideoType == VideoType.VideoFile
            };

            if (info.Protocol == MediaProtocol.File)
            {
                info.ETag = i.DateModified.Ticks.ToString(CultureInfo.InvariantCulture).GetMD5().ToString("N");
            }

            if (i.IsShortcut)
            {
                info.Path = i.ShortcutPath;

                if (info.Path.StartsWith("Http", StringComparison.OrdinalIgnoreCase))
                {
                    info.Protocol = MediaProtocol.Http;
                }
                else if (info.Path.StartsWith("Rtmp", StringComparison.OrdinalIgnoreCase))
                {
                    info.Protocol = MediaProtocol.Rtmp;
                }
                else if (info.Path.StartsWith("Rtsp", StringComparison.OrdinalIgnoreCase))
                {
                    info.Protocol = MediaProtocol.Rtsp;
                }
                else
                {
                    info.Protocol = MediaProtocol.File;
                }
            }

            if (string.IsNullOrEmpty(info.Container))
            {
                if (i.VideoType == VideoType.VideoFile || i.VideoType == VideoType.Iso)
                {
                    if (!string.IsNullOrWhiteSpace(i.Path) && locationType != LocationType.Remote && locationType != LocationType.Virtual)
                    {
                        info.Container = System.IO.Path.GetExtension(i.Path).TrimStart('.');
                    }
                }
            }

            try
            {
                var bitrate = i.TotalBitrate ??
                    info.MediaStreams.Where(m => m.Type != MediaStreamType.Subtitle && !string.Equals(m.Codec, "mjpeg", StringComparison.OrdinalIgnoreCase))
                    .Select(m => m.BitRate ?? 0)
                    .Sum();

                if (bitrate > 0)
                {
                    info.Bitrate = bitrate;
                }
            }
            catch (OverflowException ex)
            {
                Logger.ErrorException("Error calculating total bitrate", ex);
            }

            return info;
        }