/// <summary>
 /// Initializes a new instance of the <see cref="QueueTask"/> class.
 /// </summary>
 /// <param name="task">
 /// The task.
 /// </param>
 /// <param name="configuration">
 /// The configuration.
 /// </param>
 /// <param name="scannedSourcePath">
 /// The scanned Source Path.
 /// </param>
 public QueueTask(EncodeTask task, HBConfiguration configuration, string scannedSourcePath)
 {
     this.Task = task;
     this.Configuration = configuration;
     this.Status = QueueItemStatus.Waiting;
     this.ScannedSourcePath = scannedSourcePath;
 }

        /// <summary>
        /// Start with a LibHb EncodeJob Object
        /// </summary>
        /// <param name="task">
        /// The task.
        /// </param>
        /// <param name="configuration">
        /// The configuration.
        /// </param>
        public void Start(EncodeTask task, HBConfiguration configuration)
        {
            try
            {
                // Sanity Checking and Setup
                if (this.IsEncoding)
                {
                    throw new GeneralApplicationException("HandBrake is already encoding a file.", "Please stop the current encode. If the problem persists, please restart HandBrake.", null);
                }

                // Setup
                this.startTime = DateTime.Now;
                this.currentTask = task;
                this.currentConfiguration = configuration;

                // Create a new HandBrake instance
                // Setup the HandBrake Instance
                HandBrakeUtils.MessageLogged += this.HandBrakeInstanceMessageLogged;
                HandBrakeUtils.ErrorLogged += this.HandBrakeInstanceErrorLogged;
                this.instance = task.IsPreviewEncode ? HandBrakeInstanceManager.GetPreviewInstance(configuration.Verbosity) : HandBrakeInstanceManager.GetEncodeInstance(configuration.Verbosity);
                
                this.instance.EncodeCompleted += this.InstanceEncodeCompleted;
                this.instance.EncodeProgress += this.InstanceEncodeProgress;

                this.IsEncoding = true;
                this.isPreviewInstance = task.IsPreviewEncode;
                this.SetupLogging(task.IsPreviewEncode);

                // Verify the Destination Path Exists, and if not, create it.
                this.VerifyEncodeDestinationPath(task);

                this.ServiceLogMessage("Starting Encode ...");

                // Get an EncodeJob object for the Interop Library
                this.instance.StartEncode(EncodeFactory.Create(task, configuration));

                // Fire the Encode Started Event
                this.InvokeEncodeStarted(System.EventArgs.Empty);
            }
            catch (Exception exc)
            {
                this.IsEncoding = false;

                this.ServiceLogMessage("Failed to start encoding ..." + Environment.NewLine + exc);
                this.InvokeEncodeCompleted(new HandBrakeWPF.Services.Encode.EventArgs.EncodeCompletedEventArgs(false, exc, "Unable to start encoding", task.Source));
            }
        }

        /// <summary>
        /// The create.
        /// </summary>
        /// <param name="job">
        /// The encode job.
        /// </param>
        /// <param name="configuration">
        /// The configuration.
        /// </param>
        /// <returns>
        /// The <see cref="JsonEncodeObject"/>.
        /// </returns>
        internal static JsonEncodeObject Create(EncodeTask job, HBConfiguration configuration)
        {
            JsonEncodeObject encode = new JsonEncodeObject
            {
                SequenceID = 0,
                Audio = CreateAudio(job),
                Destination = CreateDestination(job),
                Filters = CreateFilters(job),
                PAR = CreatePAR(job),
                Metadata = CreateMetadata(job),
                Source = CreateSource(job, configuration),
                Subtitle = CreateSubtitle(job),
                Video = CreateVideo(job, configuration)
            };

            return encode;
        }

        /// <summary>
        /// The create subtitle.
        /// </summary>
        /// <param name="job">
        /// The job.
        /// </param>
        /// <returns>
        /// The <see cref="HandBrake.ApplicationServices.Interop.Json.Encode.Subtitles"/>.
        /// </returns>
        private static Subtitle CreateSubtitle(EncodeTask job)
        {
            Subtitles subtitle = new Subtitles
            {
                Search =
                        new SubtitleSearch
                        {
                            Enable = false,
                            Default = false,
                            Burn = false,
                            Forced = false
                        },
                SubtitleList = new List<HandBrake.ApplicationServices.Interop.Json.Encode.SubtitleTrack>()
            };

            foreach (SubtitleTrack item in job.SubtitleTracks)
            {
                if (!item.IsSrtSubtitle)
                {
                    // Handle Foreign Audio Search
                    if (item.SourceTrack.TrackNumber == 0)
                    {
                        subtitle.Search.Enable = true;
                        subtitle.Search.Burn = item.Burned;
                        subtitle.Search.Default = item.Default;
                        subtitle.Search.Forced = item.Forced;
                    }
                    else
                    {
                        HandBrake.ApplicationServices.Interop.Json.Encode.SubtitleTrack track = new HandBrake.ApplicationServices.Interop.Json.Encode.SubtitleTrack
                        {
                            Burn = item.Burned,
                            Default = item.Default,
                            Forced = item.Forced,
                            ID = item.SourceTrack.TrackNumber,
                            Track = (item.SourceTrack.TrackNumber - 1)
                        };

                        subtitle.SubtitleList.Add(track);
                    }
                }
                else
                {
                    HandBrake.ApplicationServices.Interop.Json.Encode.SubtitleTrack track = new HandBrake.ApplicationServices.Interop.Json.Encode.SubtitleTrack
                    {
                        Track = -1, // Indicates SRT
                        Default = item.Default,
                        Offset = item.SrtOffset,
                        Burn = item.Burned,
                        SRT =
                            new SRT
                            {
                                Filename = item.SrtPath,
                                Codeset = item.SrtCharCode,
                                Language = item.SrtLang
                            }
                    };

                    subtitle.SubtitleList.Add(track);
                }
            }

            return subtitle;
        }

 /// <summary>
 /// Create the PAR object
 /// </summary>
 /// <param name="job">
 /// The Job
 /// </param>
 /// <returns>
 /// The produced PAR object.
 /// </returns>
 private static PAR CreatePAR(EncodeTask job)
 {
     return new PAR { Num = job.PixelAspectX, Den = job.PixelAspectY };
 }

        /// <summary>
        /// The create filter.
        /// </summary>
        /// <param name="job">
        /// The job.
        /// </param>
        /// <returns>
        /// The <see cref="Filters"/>.
        /// </returns>
        private static Filters CreateFilters(EncodeTask job)
        {
            Filters filter = new Filters
            {
                FilterList = new List<Filter>(),
            };

            // Note, order is important.

            // Detelecine
            if (job.Detelecine != Detelecine.Off)
            {
                IntPtr settingsPtr = HBFunctions.hb_generate_filter_settings_json((int)hb_filter_ids.HB_FILTER_DETELECINE, null, null, job.CustomDetelecine);
                string unparsedJson = Marshal.PtrToStringAnsi(settingsPtr);
                if (!string.IsNullOrEmpty(unparsedJson))
                {
                    JToken settings = JObject.Parse(unparsedJson);

                    Filter filterItem = new Filter { ID = (int)hb_filter_ids.HB_FILTER_DETELECINE, Settings = settings };
                    filter.FilterList.Add(filterItem);
                }
            }

            // Deinterlace
            if (job.DeinterlaceFilter == DeinterlaceFilter.Yadif)
            {
                IntPtr settingsPtr = HBFunctions.hb_generate_filter_settings_json((int)hb_filter_ids.HB_FILTER_DEINTERLACE, EnumHelper<Deinterlace>.GetShortName(job.Deinterlace),  null, job.CustomDeinterlace);
                string unparsedJson = Marshal.PtrToStringAnsi(settingsPtr);
                if (!string.IsNullOrEmpty(unparsedJson))
                {
                    JToken root = JObject.Parse(unparsedJson);

                    Filter filterItem = new Filter { ID = (int)hb_filter_ids.HB_FILTER_DEINTERLACE, Settings = root };
                    filter.FilterList.Add(filterItem);
                }
            }

            // Decomb
            if (job.DeinterlaceFilter == DeinterlaceFilter.Decomb)
            {
                IntPtr settingsPtr = HBFunctions.hb_generate_filter_settings_json((int)hb_filter_ids.HB_FILTER_DECOMB, EnumHelper<Decomb>.GetShortName(job.Decomb), null, job.CustomDecomb);
                string unparsedJson = Marshal.PtrToStringAnsi(settingsPtr);
                if (!string.IsNullOrEmpty(unparsedJson))
                {
                    JToken settings = JObject.Parse(unparsedJson);

                    Filter filterItem = new Filter { ID = (int)hb_filter_ids.HB_FILTER_DECOMB, Settings = settings };
                    filter.FilterList.Add(filterItem);
                }
            }

            if (job.DeinterlaceFilter == DeinterlaceFilter.Decomb || job.DeinterlaceFilter == DeinterlaceFilter.Yadif)
            {
                if (job.CombDetect != CombDetect.Off)
                {
                    IntPtr settingsPtr = HBFunctions.hb_generate_filter_settings_json((int)hb_filter_ids.HB_FILTER_COMB_DETECT, EnumHelper<CombDetect>.GetShortName(job.CombDetect), null, job.CustomCombDetect);
                    string unparsedJson = Marshal.PtrToStringAnsi(settingsPtr);
                    if (!string.IsNullOrEmpty(unparsedJson))
                    {
                        JToken settings = JObject.Parse(unparsedJson);

                        Filter filterItem = new Filter
                                                {
                                                    ID = (int)hb_filter_ids.HB_FILTER_COMB_DETECT,
                                                    Settings = settings
                                                };
                        filter.FilterList.Add(filterItem);
                    }
                }
            }

            // Denoise
            if (job.Denoise != Denoise.Off)
            {
                hb_filter_ids id = job.Denoise == Denoise.hqdn3d
                    ? hb_filter_ids.HB_FILTER_HQDN3D
                    : hb_filter_ids.HB_FILTER_NLMEANS;

                IntPtr settingsPtr = HBFunctions.hb_generate_filter_settings_json((int)id, job.DenoisePreset.ToString().ToLower().Replace(" ", string.Empty), job.DenoiseTune.ToString().ToLower().Replace(" ", string.Empty), job.CustomDenoise);
                string unparsedJson = Marshal.PtrToStringAnsi(settingsPtr);

                if (!string.IsNullOrEmpty(unparsedJson))
                {
                    JToken settings = JObject.Parse(unparsedJson);

                    Filter filterItem = new Filter { ID = (int)id, Settings = settings };
                    filter.FilterList.Add(filterItem);
                }
            }

            // Deblock
//.........这里部分代码省略.........

        /// <summary>
        /// Update all the UI controls based on the encode task passed in.
        /// </summary>
        /// <param name="task">
        /// The task.
        /// </param>
        public void UpdateTask(EncodeTask task)
        {
            this.Task = task;
            this.SetRF(task.Quality);

            this.NotifyOfPropertyChange(() => this.IsConstantFramerate);
            this.NotifyOfPropertyChange(() => this.IsConstantQuantity);
            this.NotifyOfPropertyChange(() => this.IsPeakFramerate);
            this.NotifyOfPropertyChange(() => this.IsVariableFramerate);
            this.NotifyOfPropertyChange(() => this.SelectedVideoEncoder);
            this.NotifyOfPropertyChange(() => this.SelectedFramerate);
            this.NotifyOfPropertyChange(() => this.QualityMax);
            this.NotifyOfPropertyChange(() => this.QualityMin);
            this.NotifyOfPropertyChange(() => this.RF);
            this.NotifyOfPropertyChange(() => this.DisplayRF);
            this.NotifyOfPropertyChange(() => this.IsLossless);
            this.NotifyOfPropertyChange(() => this.Task.VideoBitrate);
            this.NotifyOfPropertyChange(() => this.Task.Quality);
            this.NotifyOfPropertyChange(() => this.Task.TwoPass);
            this.NotifyOfPropertyChange(() => this.Task.TurboFirstPass);

            this.NotifyOfPropertyChange(() => this.VideoTune);
            this.NotifyOfPropertyChange(() => this.VideoProfile);
            this.NotifyOfPropertyChange(() => this.VideoProfile);
            this.NotifyOfPropertyChange(() => this.VideoLevel);
            this.NotifyOfPropertyChange(() => this.FastDecode);
            this.NotifyOfPropertyChange(() => this.ExtraArguments);
        }

        /// <summary>
        /// Setup this tab for the specified preset.
        /// </summary>
        /// <param name="preset">
        /// The preset.
        /// </param>
        /// <param name="task">
        /// The task.
        /// </param>
        public void SetPreset(Preset preset, EncodeTask task)
        {
            this.Task = task;
            if (preset == null || preset.Task == null)
            {
                return;
            }

            this.SelectedVideoEncoder = preset.Task.VideoEncoder;
            this.SelectedFramerate = preset.Task.Framerate.HasValue ? preset.Task.Framerate.Value.ToString(CultureInfo.InvariantCulture) : SameAsSource;

            this.IsConstantQuantity = preset.Task.VideoEncodeRateType == VideoEncodeRateType.ConstantQuality;

            switch (preset.Task.FramerateMode)
            {
                case FramerateMode.CFR:
                    this.IsConstantFramerate = true;
                    break;
                case FramerateMode.VFR:
                    this.IsVariableFramerate = true;
                    this.ShowPeakFramerate = false;
                    break;
                case FramerateMode.PFR:
                    this.IsPeakFramerate = true;
                    this.ShowPeakFramerate = true;
                    break;
            }

            this.SetRF(preset.Task.Quality);

            this.TwoPass = preset.Task.TwoPass;
            this.TurboFirstPass = preset.Task.TurboFirstPass;
            this.Task.VideoBitrate = preset.Task.VideoBitrate;

            this.NotifyOfPropertyChange(() => this.Task);

            if (preset.Task != null)
            {
                this.HandleEncoderChange(preset.Task.VideoEncoder);

                HBVideoEncoder encoder = HandBrakeEncoderHelpers.VideoEncoders.FirstOrDefault(s => s.ShortName == EnumHelper<VideoEncoder>.GetShortName(preset.Task.VideoEncoder));
                if (encoder != null)
                {
                    if (preset.Task.VideoEncoder == VideoEncoder.X264 || preset.Task.VideoEncoder == VideoEncoder.X265 || preset.Task.VideoEncoder == VideoEncoder.QuickSync)
                    {
                        this.VideoLevel = preset.Task.VideoLevel != null ? preset.Task.VideoLevel.Clone() : this.VideoLevels.FirstOrDefault();
                        this.VideoProfile = preset.Task.VideoProfile != null ? preset.Task.VideoProfile.Clone() : this.VideoProfiles.FirstOrDefault();
                        this.VideoPresetValue = preset.Task.VideoPreset != null ? this.VideoPresets.IndexOf(preset.Task.VideoPreset) : 0;
                        this.FastDecode = preset.Task.VideoTunes != null && preset.Task.VideoTunes.Contains(VideoTune.FastDecode);
                        this.VideoTune = (preset.Task.VideoTunes != null && preset.Task.VideoTunes.Any() ? preset.Task.VideoTunes.FirstOrDefault(t => !Equals(t, VideoTune.FastDecode)) : this.VideoTunes.FirstOrDefault())
                                         ?? VideoTune.None;
                    }
                }

                this.ExtraArguments = preset.Task.ExtraAdvancedArguments;
                this.UseAdvancedTab = !string.IsNullOrEmpty(preset.Task.AdvancedEncoderOptions) && this.ShowAdvancedTab;
            }
        }

        /// <summary>
        /// Setup this tab for the specified preset.
        /// </summary>
        /// <param name="preset">
        /// The preset.
        /// </param>
        /// <param name="task">
        /// The task.
        /// </param>
        public void SetPreset(Preset preset, EncodeTask task)
        {
            this.Task = task;
            this.currentPreset = preset;

            // Audio Behaviours
            this.AudioDefaultsViewModel.Setup(preset, task);

            if (preset != null && preset.Task != null)
            {
                this.SetupTracks();
            }

            this.NotifyOfPropertyChange(() => this.Task);
        }

        /// <summary>
        /// Start with a LibHb EncodeJob Object
        /// </summary>
        /// <param name="task">
        /// The task.
        /// </param>
        /// <param name="configuration">
        /// The configuration.
        /// </param>
        public void Start(EncodeTask task, HBConfiguration configuration)
        {
            try
            {
                // Setup
                this.startTime = DateTime.Now;
                this.currentTask = task;
                this.currentConfiguration = configuration;

                // Create a new HandBrake instance
                // Setup the HandBrake Instance
                HandBrakeUtils.MessageLogged += this.HandBrakeInstanceMessageLogged;
                HandBrakeUtils.ErrorLogged += this.HandBrakeInstanceErrorLogged;
                this.instance = HandBrakeInstanceManager.GetEncodeInstance(configuration.Verbosity);
                this.instance.EncodeCompleted += this.InstanceEncodeCompleted;
                this.instance.EncodeProgress += this.InstanceEncodeProgress;

                // Sanity Checking and Setup
                if (this.IsEncoding)
                {
                    throw new Exception("HandBrake is already encoding.");
                }

                this.IsEncoding = true;
                this.SetupLogging();

                // Verify the Destination Path Exists, and if not, create it.
                this.VerifyEncodeDestinationPath(task);

                this.ServiceLogMessage("Starting Encode ...");

                // Get an EncodeJob object for the Interop Library
                this.instance.StartEncode(EncodeFactory.Create(task, configuration));

                // Fire the Encode Started Event
                this.InvokeEncodeStarted(System.EventArgs.Empty);

                // Set the Process Priority
                switch (configuration.ProcessPriority)
                {
                    case "Realtime":
                        Process.GetCurrentProcess().PriorityClass = ProcessPriorityClass.RealTime;
                        break;
                    case "High":
                        Process.GetCurrentProcess().PriorityClass = ProcessPriorityClass.High;
                        break;
                    case "Above Normal":
                        Process.GetCurrentProcess().PriorityClass = ProcessPriorityClass.AboveNormal;
                        break;
                    case "Normal":
                        Process.GetCurrentProcess().PriorityClass = ProcessPriorityClass.Normal;
                        break;
                    case "Low":
                        Process.GetCurrentProcess().PriorityClass = ProcessPriorityClass.Idle;
                        break;
                    default:
                        Process.GetCurrentProcess().PriorityClass = ProcessPriorityClass.BelowNormal;
                        break;
                }
            }
            catch (Exception exc)
            {
                this.IsEncoding = false;

                this.ServiceLogMessage("Failed to start encoding ..." + Environment.NewLine + exc);
                this.InvokeEncodeCompleted(new HandBrakeWPF.Services.Encode.EventArgs.EncodeCompletedEventArgs(false, exc, "Unable to start encoding", task.Source));
            }
        }

 /// <summary>
 /// Update all the UI controls based on the encode task passed in.
 /// </summary>
 /// <param name="task">
 /// The task.
 /// </param>
 public void UpdateTask(EncodeTask task)
 {
     this.Task = task;
     this.NotifyOfPropertyChange(() => this.Width);
     this.NotifyOfPropertyChange(() => this.Height);
     this.NotifyOfPropertyChange(() => this.SelectedAnamorphicMode);
     this.NotifyOfPropertyChange(() => this.SelectedModulus);
 }

        /// <summary>
        /// Setup this window for a new source
        /// </summary>
        /// <param name="source">
        /// The source.
        /// </param>
        /// <param name="title">
        /// The title.
        /// </param>
        /// <param name="preset">
        /// The preset.
        /// </param>
        /// <param name="task">
        /// The task.
        /// </param>
        public void SetSource(Source source, Title title, Preset preset, EncodeTask task)
        {
            this.currentTitle = title;
            this.Task = task;

            this.scannedSource = source;

            if (title != null)
            {
                // Set cached info
                this.sourceParValues = title.ParVal;
                this.sourceResolution = title.Resolution;

                // Update the cropping values, preffering those in the presets.
                if (!preset.Task.HasCropping)
                {
                    this.Task.Cropping.Top = title.AutoCropDimensions.Top;
                    this.Task.Cropping.Bottom = title.AutoCropDimensions.Bottom;
                    this.Task.Cropping.Left = title.AutoCropDimensions.Left;
                    this.Task.Cropping.Right = title.AutoCropDimensions.Right;
                    this.IsCustomCrop = false;
                }
                else
                {
                    this.Task.Cropping.Left = preset.Task.Cropping.Left;
                    this.Task.Cropping.Right = preset.Task.Cropping.Right;
                    this.Task.Cropping.Top = preset.Task.Cropping.Top;
                    this.Task.Cropping.Bottom = preset.Task.Cropping.Bottom;
                    this.IsCustomCrop = true;
                }

                if (preset.PictureSettingsMode == PresetPictureSettingsMode.None)
                {
                    // We have no instructions, so simply set it to the source.
                    this.Task.Width = this.GetModulusValue(this.sourceResolution.Width - this.CropLeft - this.CropRight);
                    this.MaintainAspectRatio = true;
                }
                else
                {
                    // Set the Max Width / Height available to the user controls
                    if (this.sourceResolution.Width < this.MaxWidth)
                    {
                        this.MaxWidth = this.sourceResolution.Width;
                    }
                    else if (this.sourceResolution.Width > this.MaxWidth)
                    {
                        this.MaxWidth = preset.Task.MaxWidth ?? this.sourceResolution.Width;
                    }

                    if (this.sourceResolution.Height < this.MaxHeight)
                    {
                        this.MaxHeight = this.sourceResolution.Height;
                    }
                    else if (this.sourceResolution.Height > this.MaxHeight)
                    {
                        this.MaxHeight = preset.Task.MaxHeight ?? this.sourceResolution.Height;
                    }

                    // Set the Width, and Maintain Aspect ratio. That should calc the Height for us.
                    if (this.SelectedAnamorphicMode == Anamorphic.None)
                    {
                        this.Task.Width = preset.Task.Width ?? (this.MaxWidth - this.CropLeft - this.CropRight);
                        // Note: This will be auto-corrected in the property if it's too large.
                    }
                    else
                    {
                        this.Task.Width = preset.Task.Width ?? this.MaxWidth;

                        int cropHeight = this.Task.Cropping.Top + this.Task.Cropping.Bottom;
                        this.Task.Height = (preset.Task.Height ?? this.MaxHeight) - cropHeight;
                    }

                    // If our height is too large, let it downscale the width for us by setting the height to the lower value.
                    if (!this.MaintainAspectRatio && this.Height > this.MaxHeight)
                    {
                        this.Task.Height = this.MaxHeight;
                    }
                }

                // Set Screen Controls
                this.SourceInfo = string.Format(
                    "{0}x{1}, PAR: {2}/{3}",
                    title.Resolution.Width,
                    title.Resolution.Height,
                    title.ParVal.Width,
//.........这里部分代码省略.........

        /// <summary>
        /// Setup this tab for the specified preset.
        /// </summary>
        /// <param name="preset">
        /// The preset.
        /// </param>
        /// <param name="task">
        /// The task.
        /// </param>
        public void SetPreset(Preset preset, EncodeTask task)
        {
            this.Task = task;

            // Handle built-in presets.
            if (preset.IsBuildIn)
            {
                preset.PictureSettingsMode = PresetPictureSettingsMode.Custom;
            }

            // Setup the Picture Sizes
            switch (preset.PictureSettingsMode)
            {
                default:
                case PresetPictureSettingsMode.Custom:
                case PresetPictureSettingsMode.SourceMaximum:

                    // Anamorphic Mode
                    this.SelectedAnamorphicMode = preset.Task.Anamorphic;

                    // Modulus
                    if (preset.Task.Modulus.HasValue)
                    {
                        this.SelectedModulus = preset.Task.Modulus;
                    }

                    // Set the Maintain Aspect ratio.
                    this.MaintainAspectRatio = preset.Task.KeepDisplayAspect;

                    // Set the Maximum so libhb can correctly manage the size.
                    if (preset.PictureSettingsMode == PresetPictureSettingsMode.SourceMaximum)
                    {
                        this.MaxWidth = this.sourceResolution.Width;
                        this.MaxHeight = this.sourceResolution.Height;
                    }
                    else
                    {
                        this.MaxWidth = preset.Task.MaxWidth ?? this.sourceResolution.Width;
                        this.MaxHeight = preset.Task.MaxHeight ?? this.sourceResolution.Height;
                    }

                    // Set the width, then check the height doesn't breach the max height and correct if necessary.
                    int width = this.GetModulusValue(this.GetRes((this.sourceResolution.Width - this.CropLeft - this.CropRight), preset.Task.MaxWidth));
                    this.Width = width;

                    // If we have a max height, make sure we havn't breached it.
                    int height = this.GetModulusValue(this.GetRes((this.sourceResolution.Height - this.CropTop - this.CropBottom), preset.Task.MaxHeight));
                    if (preset.Task.MaxHeight.HasValue && this.Height > preset.Task.MaxHeight.Value)
                    {
                        this.Height = height;
                    }
                    break;
                case PresetPictureSettingsMode.None:
                    // Do Nothing except reset the Max Width/Height
                    this.MaxWidth = this.sourceResolution.Width;
                    this.MaxHeight = this.sourceResolution.Height;
                    this.SelectedAnamorphicMode = preset.Task.Anamorphic;
                    break;
            }

            // Custom Anamorphic
            if (preset.Task.Anamorphic == Anamorphic.Custom)
            {
                this.DisplayWidth = preset.Task.DisplayWidth != null ? int.Parse(preset.Task.DisplayWidth.ToString()) : 0;
                this.ParWidth = preset.Task.PixelAspectX;
                this.ParHeight = preset.Task.PixelAspectY;
            }

            // Cropping
            if (preset.Task.HasCropping)
            {
                this.IsCustomCrop = true;
                this.CropLeft = preset.Task.Cropping.Left;
                this.CropRight = preset.Task.Cropping.Right;
                this.CropTop = preset.Task.Cropping.Top;
                this.CropBottom = preset.Task.Cropping.Bottom;
            }
            else
            {
                this.IsCustomCrop = false;
            }

            this.NotifyOfPropertyChange(() => this.Task);

            this.UpdateVisibileControls();
        }

        /// <summary>
        /// Function which generates the filename and path automatically based on 
        /// the Source Name, DVD title and DVD Chapters
        /// </summary>
        /// <param name="task">
        /// The task.
        /// </param>
        /// <param name="sourceOrLabelName">
        /// The Source or Label Name
        /// </param>
        /// <returns>
        /// The Generated FileName
        /// </returns>
        public static string AutoName(EncodeTask task, string sourceOrLabelName, Preset presetName)
        {
            IUserSettingService userSettingService = IoC.Get<IUserSettingService>();
            if (task.Destination == null)
            {
                task.Destination = string.Empty;
            }

            string autoNamePath = string.Empty;
            if (task.Title != 0)
            {
                // Get the Source Name and remove any invalid characters
                string sourceName = Path.GetInvalidFileNameChars().Aggregate(sourceOrLabelName, (current, character) => current.Replace(character.ToString(), string.Empty));
                string sanitisedPresetName = presetName != null ? Path.GetInvalidFileNameChars().Aggregate(presetName.Name, (current, character) => current.Replace(character.ToString(), string.Empty)) : string.Empty;

                // Remove Underscores
                if (userSettingService.GetUserSetting<bool>(UserSettingConstants.AutoNameRemoveUnderscore))
                    sourceName = sourceName.Replace("_", " ");

                if (userSettingService.GetUserSetting<bool>(UserSettingConstants.RemovePunctuation))
                {
                    sourceName = sourceName.Replace("-", string.Empty);
                    sourceName = sourceName.Replace(",", string.Empty);
                    sourceName = sourceName.Replace(".", string.Empty);
                }

                // Switch to "Title Case"
                if (userSettingService.GetUserSetting<bool>(UserSettingConstants.AutoNameTitleCase))
                    sourceName = sourceName.ToTitleCase();

                // Get the Selected Title Number

                string dvdTitle = task.Title.ToString();

                // Get the Chapter Start and Chapter End Numbers
                string chapterStart = task.StartPoint.ToString();
                string chapterFinish = task.EndPoint.ToString();
                string combinedChapterTag = chapterStart;
                if (chapterFinish != chapterStart && chapterFinish != string.Empty)
                    combinedChapterTag = chapterStart + "-" + chapterFinish;

                /*
                 * File Name
                 */
                string destinationFilename;
                if (userSettingService.GetUserSetting<string>(UserSettingConstants.AutoNameFormat) != string.Empty)
                {
                    destinationFilename = userSettingService.GetUserSetting<string>(UserSettingConstants.AutoNameFormat);
                    destinationFilename =
                        destinationFilename
                            .Replace("{source}", sourceName)
                            .Replace(Constants.Title, dvdTitle)
                            .Replace(Constants.Chapters, combinedChapterTag)
                            .Replace(Constants.Date, DateTime.Now.Date.ToShortDateString().Replace('/', '-'))
                            .Replace(Constants.Time,DateTime.Now.ToString("HH:mm"))
                            .Replace(Constants.Preset, sanitisedPresetName);

                    if (task.VideoEncodeRateType == VideoEncodeRateType.ConstantQuality)
                    {
                        destinationFilename = destinationFilename.Replace(Constants.Quality, task.Quality.ToString());
                        destinationFilename = destinationFilename.Replace(Constants.Bitrate, string.Empty);
                    }
                    else
                    {
                        destinationFilename = destinationFilename.Replace(Constants.Bitrate, task.VideoBitrate.ToString());
                        destinationFilename = destinationFilename.Replace(Constants.Quality, string.Empty);
                    }
                }
                else
                    destinationFilename = sourceName + "_T" + dvdTitle + "_C" + combinedChapterTag;

                /*
                 * File Extension
                 */
                if (task.OutputFormat == OutputFormat.Mp4)
                {
                    switch (userSettingService.GetUserSetting<int>(UserSettingConstants.UseM4v))
                    {
                        case 0: // Automatic
                            destinationFilename += task.IncludeChapterMarkers || MP4Helper.RequiresM4v(task) ? ".m4v" : ".mp4";
                            break;
                        case 1: // Always MP4
                            destinationFilename += ".mp4";
                            break;
                        case 2: // Always M4V
                            destinationFilename += ".m4v";
                            break;
//.........这里部分代码省略.........

        /// <summary>
        /// Update this preset.
        /// The given parameters should be copy-constructed.
        /// </summary>
        /// <param name="task">
        /// The task.
        /// </param>
        /// <param name="audioBehaviours">
        /// The audio behaviours.
        /// </param>
        /// <param name="subtitleBehaviours">
        /// The subtitle behaviours.
        /// </param>
        public void Update(EncodeTask task, AudioBehaviours audioBehaviours, SubtitleBehaviours subtitleBehaviours)
        {
            // Copy over Max Width / Height for the following picture settings modes.
            if (this.PictureSettingsMode == PresetPictureSettingsMode.Custom
                || this.PictureSettingsMode == PresetPictureSettingsMode.SourceMaximum)
            {
                task.MaxWidth = this.Task.MaxWidth;
                task.MaxHeight = this.Task.MaxHeight;
            }

            this.Task = task;
            this.AudioTrackBehaviours = new AudioBehaviours(audioBehaviours);
            this.SubtitleTrackBehaviours = new SubtitleBehaviours(subtitleBehaviours);
        }

        /// <summary>
        /// Update all the UI controls based on the encode task passed in.
        /// </summary>
        /// <param name="task">
        /// The task.
        /// </param>
        public void UpdateTask(EncodeTask task)
        {
            this.CurrentTask = task;

            this.NotifyOfPropertyChange(() => this.SelectedDenoise);
            this.NotifyOfPropertyChange(() => this.SelectedDecomb);
            this.NotifyOfPropertyChange(() => this.SelectedDeInterlace);
            this.NotifyOfPropertyChange(() => this.SelectedDetelecine);
            this.NotifyOfPropertyChange(() => this.Grayscale);
            this.NotifyOfPropertyChange(() => this.DeblockValue);

            this.NotifyOfPropertyChange(() => this.CustomDecomb);
            this.NotifyOfPropertyChange(() => this.CustomDeinterlace);
            this.NotifyOfPropertyChange(() => this.CustomDetelecine);
            this.NotifyOfPropertyChange(() => this.CustomDenoise);
        }

 /// <summary>
 /// Verify the Encode Destination path exists and if not, create it.
 /// </summary>
 /// <param name="task">
 /// The task.
 /// </param>
 /// <exception cref="Exception">
 /// If the creation fails, an exception is thrown.
 /// </exception>
 protected void VerifyEncodeDestinationPath(EncodeTask task)
 {
     // Make sure the path exists, attempt to create it if it doesn't
     try
     {
         string path = Directory.GetParent(task.Destination).ToString();
         if (!Directory.Exists(path))
         {
             Directory.CreateDirectory(path);
         }
     }
     catch (Exception exc)
     {
         throw new GeneralApplicationException(
             "Unable to create directory for the encoded output.", "Please verify that you have a valid path.", exc);
     }
 }