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915 lines
32 KiB
915 lines
32 KiB
using MediaBrowser.Common.Extensions;
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using MediaBrowser.Controller;
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using MediaBrowser.Controller.Drawing;
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using MediaBrowser.Controller.Entities;
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using MediaBrowser.Controller.Providers;
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using MediaBrowser.Model.Drawing;
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using MediaBrowser.Model.Entities;
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using MediaBrowser.Model.Logging;
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using MediaBrowser.Model.Serialization;
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using System;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.Globalization;
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using System.IO;
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using System.Linq;
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using System.Threading;
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using System.Threading.Tasks;
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using MediaBrowser.Model.IO;
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using Emby.Drawing.Common;
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using MediaBrowser.Common.IO;
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using MediaBrowser.Controller.IO;
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using MediaBrowser.Controller.Library;
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using MediaBrowser.Model.Net;
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using MediaBrowser.Model.Threading;
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using TagLib;
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namespace Emby.Drawing
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{
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/// <summary>
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/// Class ImageProcessor
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/// </summary>
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public class ImageProcessor : IImageProcessor, IDisposable
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{
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/// <summary>
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/// The us culture
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/// </summary>
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protected readonly CultureInfo UsCulture = new CultureInfo("en-US");
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/// <summary>
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/// The _cached imaged sizes
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/// </summary>
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private readonly ConcurrentDictionary<Guid, ImageSize> _cachedImagedSizes;
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/// <summary>
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/// Gets the list of currently registered image processors
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/// Image processors are specialized metadata providers that run after the normal ones
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/// </summary>
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/// <value>The image enhancers.</value>
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public IEnumerable<IImageEnhancer> ImageEnhancers { get; private set; }
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/// <summary>
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/// The _logger
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/// </summary>
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private readonly ILogger _logger;
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private readonly IFileSystem _fileSystem;
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private readonly IJsonSerializer _jsonSerializer;
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private readonly IServerApplicationPaths _appPaths;
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private readonly IImageEncoder _imageEncoder;
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private readonly Func<ILibraryManager> _libraryManager;
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public ImageProcessor(ILogger logger,
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IServerApplicationPaths appPaths,
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IFileSystem fileSystem,
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IJsonSerializer jsonSerializer,
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IImageEncoder imageEncoder,
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int maxConcurrentImageProcesses, Func<ILibraryManager> libraryManager, ITimerFactory timerFactory)
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{
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_logger = logger;
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_fileSystem = fileSystem;
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_jsonSerializer = jsonSerializer;
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_imageEncoder = imageEncoder;
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_libraryManager = libraryManager;
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_appPaths = appPaths;
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ImageEnhancers = new List<IImageEnhancer>();
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_saveImageSizeTimer = timerFactory.Create(SaveImageSizeCallback, null, Timeout.Infinite, Timeout.Infinite);
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Dictionary<Guid, ImageSize> sizeDictionary;
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try
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{
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sizeDictionary = jsonSerializer.DeserializeFromFile<Dictionary<Guid, ImageSize>>(ImageSizeFile) ??
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new Dictionary<Guid, ImageSize>();
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}
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catch (FileNotFoundException)
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{
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// No biggie
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sizeDictionary = new Dictionary<Guid, ImageSize>();
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}
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catch (IOException)
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{
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// No biggie
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sizeDictionary = new Dictionary<Guid, ImageSize>();
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}
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catch (Exception ex)
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{
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logger.ErrorException("Error parsing image size cache file", ex);
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sizeDictionary = new Dictionary<Guid, ImageSize>();
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}
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_cachedImagedSizes = new ConcurrentDictionary<Guid, ImageSize>(sizeDictionary);
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}
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public string[] SupportedInputFormats
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{
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get
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{
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return _imageEncoder.SupportedInputFormats;
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}
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}
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public bool SupportsImageCollageCreation
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{
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get
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{
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return _imageEncoder.SupportsImageCollageCreation;
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}
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}
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private string ResizedImageCachePath
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{
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get
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{
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return Path.Combine(_appPaths.ImageCachePath, "resized-images");
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}
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}
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private string EnhancedImageCachePath
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{
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get
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{
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return Path.Combine(_appPaths.ImageCachePath, "enhanced-images");
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}
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}
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private string CroppedWhitespaceImageCachePath
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{
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get
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{
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return Path.Combine(_appPaths.ImageCachePath, "cropped-images");
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}
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}
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public void AddParts(IEnumerable<IImageEnhancer> enhancers)
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{
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ImageEnhancers = enhancers.ToArray();
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}
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public async Task ProcessImage(ImageProcessingOptions options, Stream toStream)
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{
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var file = await ProcessImage(options).ConfigureAwait(false);
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using (var fileStream = _fileSystem.GetFileStream(file.Item1, FileOpenMode.Open, FileAccessMode.Read, FileShareMode.Read, true))
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{
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await fileStream.CopyToAsync(toStream).ConfigureAwait(false);
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}
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}
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public ImageFormat[] GetSupportedImageOutputFormats()
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{
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return _imageEncoder.SupportedOutputFormats;
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}
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public async Task<Tuple<string, string, DateTime>> ProcessImage(ImageProcessingOptions options)
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{
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if (options == null)
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{
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throw new ArgumentNullException("options");
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}
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var originalImage = options.Image;
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if (!originalImage.IsLocalFile)
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{
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originalImage = await _libraryManager().ConvertImageToLocal(options.Item, originalImage, options.ImageIndex).ConfigureAwait(false);
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}
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var originalImagePath = originalImage.Path;
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var dateModified = originalImage.DateModified;
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if (!_imageEncoder.SupportsImageEncoding)
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{
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return new Tuple<string, string, DateTime>(originalImagePath, MimeTypes.GetMimeType(originalImagePath), dateModified);
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}
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if (options.CropWhiteSpace && _imageEncoder.SupportsImageEncoding)
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{
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var tuple = await GetWhitespaceCroppedImage(originalImagePath, dateModified).ConfigureAwait(false);
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originalImagePath = tuple.Item1;
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dateModified = tuple.Item2;
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}
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if (options.Enhancers.Count > 0)
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{
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var tuple = await GetEnhancedImage(new ItemImageInfo
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{
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DateModified = dateModified,
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Type = originalImage.Type,
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Path = originalImagePath
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}, options.Item, options.ImageIndex, options.Enhancers).ConfigureAwait(false);
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originalImagePath = tuple.Item1;
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dateModified = tuple.Item2;
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}
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if (options.HasDefaultOptions(originalImagePath))
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{
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// Just spit out the original file if all the options are default
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return new Tuple<string, string, DateTime>(originalImagePath, MimeTypes.GetMimeType(originalImagePath), dateModified);
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}
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ImageSize? originalImageSize;
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try
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{
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originalImageSize = GetImageSize(originalImagePath, dateModified, true);
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if (options.HasDefaultOptions(originalImagePath, originalImageSize.Value))
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{
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// Just spit out the original file if all the options are default
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return new Tuple<string, string, DateTime>(originalImagePath, MimeTypes.GetMimeType(originalImagePath), dateModified);
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}
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}
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catch
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{
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originalImageSize = null;
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}
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var newSize = GetNewImageSize(options, originalImageSize);
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var quality = options.Quality;
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var outputFormat = GetOutputFormat(options.SupportedOutputFormats[0]);
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var cacheFilePath = GetCacheFilePath(originalImagePath, newSize, quality, dateModified, outputFormat, options.AddPlayedIndicator, options.PercentPlayed, options.UnplayedCount, options.Blur, options.BackgroundColor, options.ForegroundLayer);
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try
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{
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CheckDisposed();
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if (!_fileSystem.FileExists(cacheFilePath))
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{
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var newWidth = Convert.ToInt32(newSize.Width);
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var newHeight = Convert.ToInt32(newSize.Height);
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_fileSystem.CreateDirectory(_fileSystem.GetDirectoryName(cacheFilePath));
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var tmpPath = Path.ChangeExtension(Path.Combine(_appPaths.TempDirectory, Guid.NewGuid().ToString("N")), Path.GetExtension(cacheFilePath));
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_fileSystem.CreateDirectory(_fileSystem.GetDirectoryName(tmpPath));
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_imageEncoder.EncodeImage(originalImagePath, tmpPath, AutoOrient(options.Item), newWidth, newHeight, quality, options, outputFormat);
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CopyFile(tmpPath, cacheFilePath);
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return new Tuple<string, string, DateTime>(tmpPath, GetMimeType(outputFormat, cacheFilePath), _fileSystem.GetLastWriteTimeUtc(tmpPath));
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}
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return new Tuple<string, string, DateTime>(cacheFilePath, GetMimeType(outputFormat, cacheFilePath), _fileSystem.GetLastWriteTimeUtc(cacheFilePath));
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}
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catch (Exception ex)
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{
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// If it fails for whatever reason, return the original image
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_logger.ErrorException("Error encoding image", ex);
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// Just spit out the original file if all the options are default
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return new Tuple<string, string, DateTime>(originalImagePath, MimeTypes.GetMimeType(originalImagePath), dateModified);
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}
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}
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private void CopyFile(string src, string destination)
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{
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try
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{
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_fileSystem.CopyFile(src, destination, true);
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}
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catch
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{
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}
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}
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private bool AutoOrient(IHasImages item)
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{
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var photo = item as Photo;
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if (photo != null && photo.Orientation.HasValue)
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{
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return true;
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}
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return false;
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}
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//private static int[][] OPERATIONS = new int[][] {
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// TopLeft
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//new int[] { 0, NONE},
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// TopRight
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//new int[] { 0, HORIZONTAL},
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//new int[] {180, NONE},
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// LeftTop
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//new int[] { 0, VERTICAL},
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//new int[] { 90, HORIZONTAL},
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// RightTop
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//new int[] { 90, NONE},
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//new int[] {-90, HORIZONTAL},
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//new int[] {-90, NONE},
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//};
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private string GetMimeType(ImageFormat format, string path)
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{
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if (format == ImageFormat.Bmp)
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{
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return MimeTypes.GetMimeType("i.bmp");
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}
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if (format == ImageFormat.Gif)
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{
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return MimeTypes.GetMimeType("i.gif");
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}
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if (format == ImageFormat.Jpg)
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{
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return MimeTypes.GetMimeType("i.jpg");
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}
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if (format == ImageFormat.Png)
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{
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return MimeTypes.GetMimeType("i.png");
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}
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if (format == ImageFormat.Webp)
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{
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return MimeTypes.GetMimeType("i.webp");
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}
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return MimeTypes.GetMimeType(path);
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}
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private ImageSize GetNewImageSize(ImageProcessingOptions options, ImageSize? originalImageSize)
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{
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if (originalImageSize.HasValue)
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{
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// Determine the output size based on incoming parameters
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var newSize = DrawingUtils.Resize(originalImageSize.Value, options.Width, options.Height, options.MaxWidth, options.MaxHeight);
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return newSize;
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}
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return GetSizeEstimate(options);
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}
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private ImageSize GetSizeEstimate(ImageProcessingOptions options)
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{
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if (options.Width.HasValue && options.Height.HasValue)
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{
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return new ImageSize(options.Width.Value, options.Height.Value);
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}
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var aspect = GetEstimatedAspectRatio(options.Image.Type);
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var width = options.Width ?? options.MaxWidth;
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if (width.HasValue)
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{
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var heightValue = aspect / width.Value;
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return new ImageSize(width.Value, Convert.ToInt32(heightValue));
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}
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var height = options.Height ?? options.MaxHeight ?? 200;
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var widthValue = aspect * height;
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return new ImageSize(Convert.ToInt32(widthValue), height);
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}
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private double GetEstimatedAspectRatio(ImageType type)
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{
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switch (type)
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{
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case ImageType.Art:
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case ImageType.Backdrop:
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case ImageType.Chapter:
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case ImageType.Screenshot:
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case ImageType.Thumb:
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return 1.78;
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case ImageType.Banner:
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return 5.4;
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case ImageType.Box:
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case ImageType.BoxRear:
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case ImageType.Disc:
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case ImageType.Menu:
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return 1;
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case ImageType.Logo:
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return 2.58;
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case ImageType.Primary:
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return .667;
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default:
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return 1;
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}
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}
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private ImageFormat GetOutputFormat(ImageFormat requestedFormat)
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{
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if (requestedFormat == ImageFormat.Webp && !_imageEncoder.SupportedOutputFormats.Contains(ImageFormat.Webp))
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{
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return ImageFormat.Png;
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}
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return requestedFormat;
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}
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/// <summary>
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/// Crops whitespace from an image, caches the result, and returns the cached path
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/// </summary>
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private async Task<Tuple<string, DateTime>> GetWhitespaceCroppedImage(string originalImagePath, DateTime dateModified)
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{
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var name = originalImagePath;
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name += "datemodified=" + dateModified.Ticks;
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var croppedImagePath = GetCachePath(CroppedWhitespaceImageCachePath, name, Path.GetExtension(originalImagePath));
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// Check again in case of contention
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if (_fileSystem.FileExists(croppedImagePath))
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{
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return GetResult(croppedImagePath);
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}
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try
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{
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_fileSystem.CreateDirectory(_fileSystem.GetDirectoryName(croppedImagePath));
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var tmpPath = Path.ChangeExtension(Path.Combine(_appPaths.TempDirectory, Guid.NewGuid().ToString("N")), Path.GetExtension(croppedImagePath));
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_fileSystem.CreateDirectory(_fileSystem.GetDirectoryName(tmpPath));
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_imageEncoder.CropWhiteSpace(originalImagePath, tmpPath);
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CopyFile(tmpPath, croppedImagePath);
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return GetResult(tmpPath);
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}
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catch (NotImplementedException)
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{
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// No need to spam the log with an error message
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return new Tuple<string, DateTime>(originalImagePath, dateModified);
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}
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catch (Exception ex)
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{
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// We have to have a catch-all here because some of the .net image methods throw a plain old Exception
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_logger.ErrorException("Error cropping image {0}", ex, originalImagePath);
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return new Tuple<string, DateTime>(originalImagePath, dateModified);
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}
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}
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private Tuple<string, DateTime> GetResult(string path)
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{
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return new Tuple<string, DateTime>(path, _fileSystem.GetLastWriteTimeUtc(path));
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}
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/// <summary>
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/// Increment this when there's a change requiring caches to be invalidated
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/// </summary>
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private const string Version = "3";
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/// <summary>
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/// Gets the cache file path based on a set of parameters
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/// </summary>
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private string GetCacheFilePath(string originalPath, ImageSize outputSize, int quality, DateTime dateModified, ImageFormat format, bool addPlayedIndicator, double percentPlayed, int? unwatchedCount, int? blur, string backgroundColor, string foregroundLayer)
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{
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var filename = originalPath;
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filename += "width=" + outputSize.Width;
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filename += "height=" + outputSize.Height;
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filename += "quality=" + quality;
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filename += "datemodified=" + dateModified.Ticks;
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filename += "f=" + format;
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if (addPlayedIndicator)
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{
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filename += "pl=true";
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}
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if (percentPlayed > 0)
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{
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filename += "p=" + percentPlayed;
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}
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if (unwatchedCount.HasValue)
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{
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filename += "p=" + unwatchedCount.Value;
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}
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if (blur.HasValue)
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{
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filename += "blur=" + blur.Value;
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}
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if (!string.IsNullOrEmpty(backgroundColor))
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{
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filename += "b=" + backgroundColor;
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}
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if (!string.IsNullOrEmpty(foregroundLayer))
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{
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filename += "fl=" + foregroundLayer;
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}
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filename += "v=" + Version;
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return GetCachePath(ResizedImageCachePath, filename, "." + format.ToString().ToLower());
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}
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public ImageSize GetImageSize(ItemImageInfo info)
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{
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return GetImageSize(info.Path, info.DateModified, false);
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}
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public ImageSize GetImageSize(string path)
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{
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return GetImageSize(path, _fileSystem.GetLastWriteTimeUtc(path), false);
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}
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/// <summary>
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/// Gets the size of the image.
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/// </summary>
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/// <param name="path">The path.</param>
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/// <param name="imageDateModified">The image date modified.</param>
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/// <param name="allowSlowMethod">if set to <c>true</c> [allow slow method].</param>
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/// <returns>ImageSize.</returns>
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/// <exception cref="System.ArgumentNullException">path</exception>
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private ImageSize GetImageSize(string path, DateTime imageDateModified, bool allowSlowMethod)
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{
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if (string.IsNullOrEmpty(path))
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{
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throw new ArgumentNullException("path");
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}
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var name = path + "datemodified=" + imageDateModified.Ticks;
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ImageSize size;
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var cacheHash = name.GetMD5();
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if (!_cachedImagedSizes.TryGetValue(cacheHash, out size))
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{
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size = GetImageSizeInternal(path, allowSlowMethod);
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if (size.Width > 0 && size.Height > 0)
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{
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StartSaveImageSizeTimer();
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_cachedImagedSizes.AddOrUpdate(cacheHash, size, (keyName, oldValue) => size);
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}
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}
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return size;
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}
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/// <summary>
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/// Gets the image size internal.
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/// </summary>
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/// <param name="path">The path.</param>
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/// <param name="allowSlowMethod">if set to <c>true</c> [allow slow method].</param>
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/// <returns>ImageSize.</returns>
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private ImageSize GetImageSizeInternal(string path, bool allowSlowMethod)
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{
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try
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{
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using (var file = TagLib.File.Create(new StreamFileAbstraction(Path.GetFileName(path), _fileSystem.OpenRead(path), null)))
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{
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var image = file as TagLib.Image.File;
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|
var properties = image.Properties;
|
|
|
|
return new ImageSize
|
|
{
|
|
Height = properties.PhotoHeight,
|
|
Width = properties.PhotoWidth
|
|
};
|
|
}
|
|
}
|
|
catch
|
|
{
|
|
}
|
|
|
|
return ImageHeader.GetDimensions(path, _logger, _fileSystem);
|
|
}
|
|
|
|
private readonly ITimer _saveImageSizeTimer;
|
|
private const int SaveImageSizeTimeout = 5000;
|
|
private readonly object _saveImageSizeLock = new object();
|
|
private void StartSaveImageSizeTimer()
|
|
{
|
|
_saveImageSizeTimer.Change(SaveImageSizeTimeout, Timeout.Infinite);
|
|
}
|
|
|
|
private void SaveImageSizeCallback(object state)
|
|
{
|
|
lock (_saveImageSizeLock)
|
|
{
|
|
try
|
|
{
|
|
var path = ImageSizeFile;
|
|
_fileSystem.CreateDirectory(_fileSystem.GetDirectoryName(path));
|
|
_jsonSerializer.SerializeToFile(_cachedImagedSizes, path);
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
_logger.ErrorException("Error saving image size file", ex);
|
|
}
|
|
}
|
|
}
|
|
|
|
private string ImageSizeFile
|
|
{
|
|
get
|
|
{
|
|
return Path.Combine(_appPaths.DataPath, "imagesizes.json");
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the image cache tag.
|
|
/// </summary>
|
|
/// <param name="item">The item.</param>
|
|
/// <param name="image">The image.</param>
|
|
/// <returns>Guid.</returns>
|
|
/// <exception cref="System.ArgumentNullException">item</exception>
|
|
public string GetImageCacheTag(IHasImages item, ItemImageInfo image)
|
|
{
|
|
if (item == null)
|
|
{
|
|
throw new ArgumentNullException("item");
|
|
}
|
|
|
|
if (image == null)
|
|
{
|
|
throw new ArgumentNullException("image");
|
|
}
|
|
|
|
var supportedEnhancers = GetSupportedEnhancers(item, image.Type);
|
|
|
|
return GetImageCacheTag(item, image, supportedEnhancers.ToList());
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the image cache tag.
|
|
/// </summary>
|
|
/// <param name="item">The item.</param>
|
|
/// <param name="image">The image.</param>
|
|
/// <param name="imageEnhancers">The image enhancers.</param>
|
|
/// <returns>Guid.</returns>
|
|
/// <exception cref="System.ArgumentNullException">item</exception>
|
|
public string GetImageCacheTag(IHasImages item, ItemImageInfo image, List<IImageEnhancer> imageEnhancers)
|
|
{
|
|
if (item == null)
|
|
{
|
|
throw new ArgumentNullException("item");
|
|
}
|
|
|
|
if (imageEnhancers == null)
|
|
{
|
|
throw new ArgumentNullException("imageEnhancers");
|
|
}
|
|
|
|
if (image == null)
|
|
{
|
|
throw new ArgumentNullException("image");
|
|
}
|
|
|
|
var originalImagePath = image.Path;
|
|
var dateModified = image.DateModified;
|
|
var imageType = image.Type;
|
|
|
|
// Optimization
|
|
if (imageEnhancers.Count == 0)
|
|
{
|
|
return (originalImagePath + dateModified.Ticks).GetMD5().ToString("N");
|
|
}
|
|
|
|
// Cache name is created with supported enhancers combined with the last config change so we pick up new config changes
|
|
var cacheKeys = imageEnhancers.Select(i => i.GetConfigurationCacheKey(item, imageType)).ToList();
|
|
cacheKeys.Add(originalImagePath + dateModified.Ticks);
|
|
|
|
return string.Join("|", cacheKeys.ToArray()).GetMD5().ToString("N");
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the enhanced image.
|
|
/// </summary>
|
|
/// <param name="item">The item.</param>
|
|
/// <param name="imageType">Type of the image.</param>
|
|
/// <param name="imageIndex">Index of the image.</param>
|
|
/// <returns>Task{System.String}.</returns>
|
|
public async Task<string> GetEnhancedImage(IHasImages item, ImageType imageType, int imageIndex)
|
|
{
|
|
var enhancers = GetSupportedEnhancers(item, imageType).ToList();
|
|
|
|
var imageInfo = item.GetImageInfo(imageType, imageIndex);
|
|
|
|
var result = await GetEnhancedImage(imageInfo, item, imageIndex, enhancers);
|
|
|
|
return result.Item1;
|
|
}
|
|
|
|
private async Task<Tuple<string, DateTime>> GetEnhancedImage(ItemImageInfo image,
|
|
IHasImages item,
|
|
int imageIndex,
|
|
List<IImageEnhancer> enhancers)
|
|
{
|
|
var originalImagePath = image.Path;
|
|
var dateModified = image.DateModified;
|
|
var imageType = image.Type;
|
|
|
|
try
|
|
{
|
|
var cacheGuid = GetImageCacheTag(item, image, enhancers);
|
|
|
|
// Enhance if we have enhancers
|
|
var ehnancedImagePath = await GetEnhancedImageInternal(originalImagePath, item, imageType, imageIndex, enhancers, cacheGuid).ConfigureAwait(false);
|
|
|
|
// If the path changed update dateModified
|
|
if (!ehnancedImagePath.Equals(originalImagePath, StringComparison.OrdinalIgnoreCase))
|
|
{
|
|
return GetResult(ehnancedImagePath);
|
|
}
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
_logger.Error("Error enhancing image", ex);
|
|
}
|
|
|
|
return new Tuple<string, DateTime>(originalImagePath, dateModified);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the enhanced image internal.
|
|
/// </summary>
|
|
/// <param name="originalImagePath">The original image path.</param>
|
|
/// <param name="item">The item.</param>
|
|
/// <param name="imageType">Type of the image.</param>
|
|
/// <param name="imageIndex">Index of the image.</param>
|
|
/// <param name="supportedEnhancers">The supported enhancers.</param>
|
|
/// <param name="cacheGuid">The cache unique identifier.</param>
|
|
/// <returns>Task<System.String>.</returns>
|
|
/// <exception cref="ArgumentNullException">
|
|
/// originalImagePath
|
|
/// or
|
|
/// item
|
|
/// </exception>
|
|
private async Task<string> GetEnhancedImageInternal(string originalImagePath,
|
|
IHasImages item,
|
|
ImageType imageType,
|
|
int imageIndex,
|
|
IEnumerable<IImageEnhancer> supportedEnhancers,
|
|
string cacheGuid)
|
|
{
|
|
if (string.IsNullOrEmpty(originalImagePath))
|
|
{
|
|
throw new ArgumentNullException("originalImagePath");
|
|
}
|
|
|
|
if (item == null)
|
|
{
|
|
throw new ArgumentNullException("item");
|
|
}
|
|
|
|
// All enhanced images are saved as png to allow transparency
|
|
var enhancedImagePath = GetCachePath(EnhancedImageCachePath, cacheGuid + ".png");
|
|
|
|
// Check again in case of contention
|
|
if (_fileSystem.FileExists(enhancedImagePath))
|
|
{
|
|
return enhancedImagePath;
|
|
}
|
|
|
|
_fileSystem.CreateDirectory(_fileSystem.GetDirectoryName(enhancedImagePath));
|
|
|
|
var tmpPath = Path.Combine(_appPaths.TempDirectory, Path.ChangeExtension(Guid.NewGuid().ToString(), Path.GetExtension(enhancedImagePath)));
|
|
_fileSystem.CreateDirectory(_fileSystem.GetDirectoryName(tmpPath));
|
|
|
|
await ExecuteImageEnhancers(supportedEnhancers, originalImagePath, tmpPath, item, imageType, imageIndex).ConfigureAwait(false);
|
|
|
|
try
|
|
{
|
|
_fileSystem.CopyFile(tmpPath, enhancedImagePath, true);
|
|
}
|
|
catch
|
|
{
|
|
|
|
}
|
|
|
|
return tmpPath;
|
|
}
|
|
|
|
/// <summary>
|
|
/// Executes the image enhancers.
|
|
/// </summary>
|
|
/// <param name="imageEnhancers">The image enhancers.</param>
|
|
/// <param name="inputPath">The input path.</param>
|
|
/// <param name="outputPath">The output path.</param>
|
|
/// <param name="item">The item.</param>
|
|
/// <param name="imageType">Type of the image.</param>
|
|
/// <param name="imageIndex">Index of the image.</param>
|
|
/// <returns>Task{EnhancedImage}.</returns>
|
|
private async Task ExecuteImageEnhancers(IEnumerable<IImageEnhancer> imageEnhancers, string inputPath, string outputPath, IHasImages item, ImageType imageType, int imageIndex)
|
|
{
|
|
// Run the enhancers sequentially in order of priority
|
|
foreach (var enhancer in imageEnhancers)
|
|
{
|
|
await enhancer.EnhanceImageAsync(item, inputPath, outputPath, imageType, imageIndex).ConfigureAwait(false);
|
|
|
|
// Feed the output into the next enhancer as input
|
|
inputPath = outputPath;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the cache path.
|
|
/// </summary>
|
|
/// <param name="path">The path.</param>
|
|
/// <param name="uniqueName">Name of the unique.</param>
|
|
/// <param name="fileExtension">The file extension.</param>
|
|
/// <returns>System.String.</returns>
|
|
/// <exception cref="System.ArgumentNullException">
|
|
/// path
|
|
/// or
|
|
/// uniqueName
|
|
/// or
|
|
/// fileExtension
|
|
/// </exception>
|
|
public string GetCachePath(string path, string uniqueName, string fileExtension)
|
|
{
|
|
if (string.IsNullOrEmpty(path))
|
|
{
|
|
throw new ArgumentNullException("path");
|
|
}
|
|
if (string.IsNullOrEmpty(uniqueName))
|
|
{
|
|
throw new ArgumentNullException("uniqueName");
|
|
}
|
|
|
|
if (string.IsNullOrEmpty(fileExtension))
|
|
{
|
|
throw new ArgumentNullException("fileExtension");
|
|
}
|
|
|
|
var filename = uniqueName.GetMD5() + fileExtension;
|
|
|
|
return GetCachePath(path, filename);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the cache path.
|
|
/// </summary>
|
|
/// <param name="path">The path.</param>
|
|
/// <param name="filename">The filename.</param>
|
|
/// <returns>System.String.</returns>
|
|
/// <exception cref="System.ArgumentNullException">
|
|
/// path
|
|
/// or
|
|
/// filename
|
|
/// </exception>
|
|
public string GetCachePath(string path, string filename)
|
|
{
|
|
if (string.IsNullOrEmpty(path))
|
|
{
|
|
throw new ArgumentNullException("path");
|
|
}
|
|
if (string.IsNullOrEmpty(filename))
|
|
{
|
|
throw new ArgumentNullException("filename");
|
|
}
|
|
|
|
var prefix = filename.Substring(0, 1);
|
|
|
|
path = Path.Combine(path, prefix);
|
|
|
|
return Path.Combine(path, filename);
|
|
}
|
|
|
|
public async Task CreateImageCollage(ImageCollageOptions options)
|
|
{
|
|
_logger.Info("Creating image collage and saving to {0}", options.OutputPath);
|
|
|
|
_imageEncoder.CreateImageCollage(options);
|
|
|
|
_logger.Info("Completed creation of image collage and saved to {0}", options.OutputPath);
|
|
}
|
|
|
|
public IEnumerable<IImageEnhancer> GetSupportedEnhancers(IHasImages item, ImageType imageType)
|
|
{
|
|
return ImageEnhancers.Where(i =>
|
|
{
|
|
try
|
|
{
|
|
return i.Supports(item, imageType);
|
|
}
|
|
catch (Exception ex)
|
|
{
|
|
_logger.ErrorException("Error in image enhancer: {0}", ex, i.GetType().Name);
|
|
|
|
return false;
|
|
}
|
|
});
|
|
}
|
|
|
|
private bool _disposed;
|
|
public void Dispose()
|
|
{
|
|
_disposed = true;
|
|
_imageEncoder.Dispose();
|
|
_saveImageSizeTimer.Dispose();
|
|
}
|
|
|
|
private void CheckDisposed()
|
|
{
|
|
if (_disposed)
|
|
{
|
|
throw new ObjectDisposedException(GetType().Name);
|
|
}
|
|
}
|
|
}
|
|
} |