diff options
| author | LukePulverenti <luke.pulverenti@gmail.com> | 2013-02-20 20:33:05 -0500 |
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| committer | LukePulverenti <luke.pulverenti@gmail.com> | 2013-02-20 20:33:05 -0500 |
| commit | 767cdc1f6f6a63ce997fc9476911e2c361f9d402 (patch) | |
| tree | 49add55976f895441167c66cfa95e5c7688d18ce /MediaBrowser.Controller/Drawing/ImageManager.cs | |
| parent | 845554722efaed872948a9e0f7202e3ef52f1b6e (diff) | |
Pushing missing changes
Diffstat (limited to 'MediaBrowser.Controller/Drawing/ImageManager.cs')
| -rw-r--r-- | MediaBrowser.Controller/Drawing/ImageManager.cs | 600 |
1 files changed, 600 insertions, 0 deletions
diff --git a/MediaBrowser.Controller/Drawing/ImageManager.cs b/MediaBrowser.Controller/Drawing/ImageManager.cs new file mode 100644 index 000000000..b493a97af --- /dev/null +++ b/MediaBrowser.Controller/Drawing/ImageManager.cs @@ -0,0 +1,600 @@ +using MediaBrowser.Common.Drawing; +using MediaBrowser.Common.Extensions; +using MediaBrowser.Common.IO; +using MediaBrowser.Common.Kernel; +using MediaBrowser.Controller.Entities; +using MediaBrowser.Controller.Entities.TV; +using MediaBrowser.Controller.Persistence; +using MediaBrowser.Controller.Providers; +using MediaBrowser.Model.Drawing; +using MediaBrowser.Model.Entities; +using System; +using System.Collections.Concurrent; +using System.Collections.Generic; +using System.Drawing; +using System.Drawing.Drawing2D; +using System.Drawing.Imaging; +using System.IO; +using System.Linq; +using System.Threading.Tasks; + +namespace MediaBrowser.Controller.Drawing +{ + /// <summary> + /// Class ImageManager + /// </summary> + public class ImageManager : BaseManager<Kernel> + { + /// <summary> + /// Gets the image size cache. + /// </summary> + /// <value>The image size cache.</value> + private FileSystemRepository ImageSizeCache { get; set; } + + /// <summary> + /// Gets or sets the resized image cache. + /// </summary> + /// <value>The resized image cache.</value> + private FileSystemRepository ResizedImageCache { get; set; } + /// <summary> + /// Gets the cropped image cache. + /// </summary> + /// <value>The cropped image cache.</value> + private FileSystemRepository CroppedImageCache { get; set; } + + /// <summary> + /// Gets the cropped image cache. + /// </summary> + /// <value>The cropped image cache.</value> + private FileSystemRepository EnhancedImageCache { get; set; } + + /// <summary> + /// The cached imaged sizes + /// </summary> + private readonly ConcurrentDictionary<string, Task<ImageSize>> _cachedImagedSizes = new ConcurrentDictionary<string, Task<ImageSize>>(); + + /// <summary> + /// Initializes a new instance of the <see cref="ImageManager" /> class. + /// </summary> + /// <param name="kernel">The kernel.</param> + public ImageManager(Kernel kernel) + : base(kernel) + { + ImageSizeCache = new FileSystemRepository(Path.Combine(Kernel.ApplicationPaths.ImageCachePath, "image-sizes")); + ResizedImageCache = new FileSystemRepository(Path.Combine(Kernel.ApplicationPaths.ImageCachePath, "resized-images")); + CroppedImageCache = new FileSystemRepository(Path.Combine(Kernel.ApplicationPaths.ImageCachePath, "cropped-images")); + EnhancedImageCache = new FileSystemRepository(Path.Combine(Kernel.ApplicationPaths.ImageCachePath, "enhanced-images")); + } + + /// <summary> + /// Processes an image by resizing to target dimensions + /// </summary> + /// <param name="entity">The entity that owns the image</param> + /// <param name="imageType">The image type</param> + /// <param name="imageIndex">The image index (currently only used with backdrops)</param> + /// <param name="cropWhitespace">if set to <c>true</c> [crop whitespace].</param> + /// <param name="dateModified">The last date modified of the original image file</param> + /// <param name="toStream">The stream to save the new image to</param> + /// <param name="width">Use if a fixed width is required. Aspect ratio will be preserved.</param> + /// <param name="height">Use if a fixed height is required. Aspect ratio will be preserved.</param> + /// <param name="maxWidth">Use if a max width is required. Aspect ratio will be preserved.</param> + /// <param name="maxHeight">Use if a max height is required. Aspect ratio will be preserved.</param> + /// <param name="quality">Quality level, from 0-100. Currently only applies to JPG. The default value should suffice.</param> + /// <returns>Task.</returns> + /// <exception cref="System.ArgumentNullException">entity</exception> + public async Task ProcessImage(BaseItem entity, ImageType imageType, int imageIndex, bool cropWhitespace, DateTime dateModified, Stream toStream, int? width, int? height, int? maxWidth, int? maxHeight, int? quality) + { + if (entity == null) + { + throw new ArgumentNullException("entity"); + } + + if (toStream == null) + { + throw new ArgumentNullException("toStream"); + } + + var originalImagePath = GetImagePath(entity, imageType, imageIndex); + + if (cropWhitespace) + { + try + { + originalImagePath = GetCroppedImage(originalImagePath, dateModified); + } + catch (Exception ex) + { + // We have to have a catch-all here because some of the .net image methods throw a plain old Exception + Logger.ErrorException("Error cropping image", ex); + } + } + + try + { + // Enhance if we have enhancers + var ehnancedImagePath = await GetEnhancedImage(originalImagePath, dateModified, entity, imageType, imageIndex).ConfigureAwait(false); + + // If the path changed update dateModified + if (!ehnancedImagePath.Equals(originalImagePath, StringComparison.OrdinalIgnoreCase)) + { + dateModified = File.GetLastWriteTimeUtc(ehnancedImagePath); + originalImagePath = ehnancedImagePath; + } + } + catch + { + Logger.Error("Error enhancing image"); + } + + var originalImageSize = await GetImageSize(originalImagePath, dateModified).ConfigureAwait(false); + + // Determine the output size based on incoming parameters + var newSize = DrawingUtils.Resize(originalImageSize, width, height, maxWidth, maxHeight); + + if (!quality.HasValue) + { + quality = 90; + } + + var cacheFilePath = GetCacheFilePath(originalImagePath, newSize, quality.Value, dateModified); + + // Grab the cache file if it already exists + try + { + using (var fileStream = new FileStream(cacheFilePath, FileMode.Open, FileAccess.Read, FileShare.Read, StreamDefaults.DefaultFileStreamBufferSize, FileOptions.Asynchronous)) + { + await fileStream.CopyToAsync(toStream).ConfigureAwait(false); + } + return; + } + catch (FileNotFoundException) + { + // Cache file doesn't exist. No biggie. + } + + using (var fileStream = File.OpenRead(originalImagePath)) + { + using (var originalImage = Bitmap.FromStream(fileStream, true, false)) + { + var newWidth = Convert.ToInt32(newSize.Width); + var newHeight = Convert.ToInt32(newSize.Height); + + // Graphics.FromImage will throw an exception if the PixelFormat is Indexed, so we need to handle that here + var thumbnail = originalImage.PixelFormat.HasFlag(PixelFormat.Indexed) ? new Bitmap(originalImage, newWidth, newHeight) : new Bitmap(newWidth, newHeight, originalImage.PixelFormat); + + // Preserve the original resolution + thumbnail.SetResolution(originalImage.HorizontalResolution, originalImage.VerticalResolution); + + var thumbnailGraph = Graphics.FromImage(thumbnail); + + thumbnailGraph.CompositingQuality = CompositingQuality.HighQuality; + thumbnailGraph.SmoothingMode = SmoothingMode.HighQuality; + thumbnailGraph.InterpolationMode = InterpolationMode.HighQualityBicubic; + thumbnailGraph.PixelOffsetMode = PixelOffsetMode.HighQuality; + thumbnailGraph.CompositingMode = CompositingMode.SourceOver; + + thumbnailGraph.DrawImage(originalImage, 0, 0, newWidth, newHeight); + + var outputFormat = originalImage.RawFormat; + + using (var memoryStream = new MemoryStream { }) + { + // Save to the memory stream + thumbnail.Save(outputFormat, memoryStream, quality.Value); + + var bytes = memoryStream.ToArray(); + + var outputTask = Task.Run(async () => await toStream.WriteAsync(bytes, 0, bytes.Length)); + + // Save to the cache location + using (var cacheFileStream = new FileStream(cacheFilePath, FileMode.Create, FileAccess.Write, FileShare.Read, StreamDefaults.DefaultFileStreamBufferSize, FileOptions.Asynchronous)) + { + // Save to the filestream + await cacheFileStream.WriteAsync(bytes, 0, bytes.Length); + } + + await outputTask.ConfigureAwait(false); + } + + thumbnailGraph.Dispose(); + thumbnail.Dispose(); + } + } + } + + /// <summary> + /// Gets the cache file path based on a set of parameters + /// </summary> + /// <param name="originalPath">The path to the original image file</param> + /// <param name="outputSize">The size to output the image in</param> + /// <param name="quality">Quality level, from 0-100. Currently only applies to JPG. The default value should suffice.</param> + /// <param name="dateModified">The last modified date of the image</param> + /// <returns>System.String.</returns> + private string GetCacheFilePath(string originalPath, ImageSize outputSize, int quality, DateTime dateModified) + { + var filename = originalPath; + + filename += "width=" + outputSize.Width; + + filename += "height=" + outputSize.Height; + + filename += "quality=" + quality; + + filename += "datemodified=" + dateModified.Ticks; + + return ResizedImageCache.GetResourcePath(filename, Path.GetExtension(originalPath)); + } + + + /// <summary> + /// Gets image dimensions + /// </summary> + /// <param name="imagePath">The image path.</param> + /// <param name="dateModified">The date modified.</param> + /// <returns>Task{ImageSize}.</returns> + /// <exception cref="System.ArgumentNullException">imagePath</exception> + public Task<ImageSize> GetImageSize(string imagePath, DateTime dateModified) + { + if (string.IsNullOrEmpty(imagePath)) + { + throw new ArgumentNullException("imagePath"); + } + + var name = imagePath + "datemodified=" + dateModified.Ticks; + + return _cachedImagedSizes.GetOrAdd(name, keyName => GetImageSizeTask(keyName, imagePath)); + } + + /// <summary> + /// Gets cached image dimensions, or results null if non-existant + /// </summary> + /// <param name="keyName">Name of the key.</param> + /// <param name="imagePath">The image path.</param> + /// <returns>Task{ImageSize}.</returns> + private Task<ImageSize> GetImageSizeTask(string keyName, string imagePath) + { + return Task.Run(() => GetImageSize(keyName, imagePath)); + } + + /// <summary> + /// Gets the size of the image. + /// </summary> + /// <param name="keyName">Name of the key.</param> + /// <param name="imagePath">The image path.</param> + /// <returns>ImageSize.</returns> + private ImageSize GetImageSize(string keyName, string imagePath) + { + // Now check the file system cache + var fullCachePath = ImageSizeCache.GetResourcePath(keyName, ".pb"); + + try + { + var result = Kernel.ProtobufSerializer.DeserializeFromFile<int[]>(fullCachePath); + + return new ImageSize { Width = result[0], Height = result[1] }; + } + catch (FileNotFoundException) + { + // Cache file doesn't exist no biggie + } + + var size = ImageHeader.GetDimensions(imagePath); + + var imageSize = new ImageSize { Width = size.Width, Height = size.Height }; + + // Update the file system cache + CacheImageSize(fullCachePath, size.Width, size.Height); + + return imageSize; + } + + /// <summary> + /// Caches image dimensions + /// </summary> + /// <param name="cachePath">The cache path.</param> + /// <param name="width">The width.</param> + /// <param name="height">The height.</param> + private void CacheImageSize(string cachePath, int width, int height) + { + var output = new[] { width, height }; + + Kernel.ProtobufSerializer.SerializeToFile(output, cachePath); + } + + /// <summary> + /// Gets the image path. + /// </summary> + /// <param name="item">The item.</param> + /// <param name="imageType">Type of the image.</param> + /// <param name="imageIndex">Index of the image.</param> + /// <returns>System.String.</returns> + /// <exception cref="System.ArgumentNullException">item</exception> + /// <exception cref="System.InvalidOperationException"></exception> + public string GetImagePath(BaseItem item, ImageType imageType, int imageIndex) + { + if (item == null) + { + throw new ArgumentNullException("item"); + } + + if (imageType == ImageType.Backdrop) + { + if (item.BackdropImagePaths == null) + { + throw new InvalidOperationException(string.Format("Item {0} does not have any Backdrops.", item.Name)); + } + + return item.BackdropImagePaths[imageIndex]; + } + + if (imageType == ImageType.Screenshot) + { + if (item.ScreenshotImagePaths == null) + { + throw new InvalidOperationException(string.Format("Item {0} does not have any Screenshots.", item.Name)); + } + + return item.ScreenshotImagePaths[imageIndex]; + } + + if (imageType == ImageType.ChapterImage) + { + var video = (Video)item; + + if (video.Chapters == null) + { + throw new InvalidOperationException(string.Format("Item {0} does not have any Chapters.", item.Name)); + } + + return video.Chapters[imageIndex].ImagePath; + } + + return item.GetImage(imageType); + } + + /// <summary> + /// Gets the image date modified. + /// </summary> + /// <param name="item">The item.</param> + /// <param name="imageType">Type of the image.</param> + /// <param name="imageIndex">Index of the image.</param> + /// <returns>DateTime.</returns> + /// <exception cref="System.ArgumentNullException">item</exception> + public DateTime GetImageDateModified(BaseItem item, ImageType imageType, int imageIndex) + { + if (item == null) + { + throw new ArgumentNullException("item"); + } + + var imagePath = GetImagePath(item, imageType, imageIndex); + + return GetImageDateModified(item, imagePath); + } + + /// <summary> + /// Gets the image date modified. + /// </summary> + /// <param name="item">The item.</param> + /// <param name="imagePath">The image path.</param> + /// <returns>DateTime.</returns> + /// <exception cref="System.ArgumentNullException">item</exception> + public DateTime GetImageDateModified(BaseItem item, string imagePath) + { + if (item == null) + { + throw new ArgumentNullException("item"); + } + + if (string.IsNullOrEmpty(imagePath)) + { + throw new ArgumentNullException("imagePath"); + } + + var metaFileEntry = item.ResolveArgs.GetMetaFileByPath(imagePath); + + // If we didn't the metafile entry, check the Season + if (!metaFileEntry.HasValue) + { + var episode = item as Episode; + + if (episode != null && episode.Season != null) + { + episode.Season.ResolveArgs.GetMetaFileByPath(imagePath); + } + } + + // See if we can avoid a file system lookup by looking for the file in ResolveArgs + return metaFileEntry == null ? File.GetLastWriteTimeUtc(imagePath) : metaFileEntry.Value.LastWriteTimeUtc; + } + + /// <summary> + /// Crops whitespace from an image, caches the result, and returns the cached path + /// </summary> + /// <param name="originalImagePath">The original image path.</param> + /// <param name="dateModified">The date modified.</param> + /// <returns>System.String.</returns> + private string GetCroppedImage(string originalImagePath, DateTime dateModified) + { + var name = originalImagePath; + name += "datemodified=" + dateModified.Ticks; + + var croppedImagePath = CroppedImageCache.GetResourcePath(name, Path.GetExtension(originalImagePath)); + + if (!CroppedImageCache.ContainsFilePath(croppedImagePath)) + { + using (var fileStream = File.OpenRead(originalImagePath)) + { + using (var originalImage = (Bitmap)Bitmap.FromStream(fileStream, true, false)) + { + var outputFormat = originalImage.RawFormat; + + using (var croppedImage = originalImage.CropWhitespace()) + { + using (var cacheFileStream = new FileStream(croppedImagePath, FileMode.Create)) + { + croppedImage.Save(outputFormat, cacheFileStream, 100); + } + } + } + } + } + + return croppedImagePath; + } + + /// <summary> + /// Runs an image through the image enhancers, caches the result, and returns the cached path + /// </summary> + /// <param name="originalImagePath">The original image path.</param> + /// <param name="dateModified">The date modified of the original image file.</param> + /// <param name="item">The item.</param> + /// <param name="imageType">Type of the image.</param> + /// <param name="imageIndex">Index of the image.</param> + /// <returns>System.String.</returns> + /// <exception cref="System.ArgumentNullException">originalImagePath</exception> + public async Task<string> GetEnhancedImage(string originalImagePath, DateTime dateModified, BaseItem item, ImageType imageType, int imageIndex) + { + if (string.IsNullOrEmpty(originalImagePath)) + { + throw new ArgumentNullException("originalImagePath"); + } + + if (item == null) + { + throw new ArgumentNullException("item"); + } + + var supportedEnhancers = Kernel.ImageEnhancers.Where(i => i.Supports(item, imageType)).ToList(); + + // No enhancement - don't cache + if (supportedEnhancers.Count == 0) + { + return originalImagePath; + } + + var cacheGuid = GetImageCacheTag(originalImagePath, dateModified, supportedEnhancers, item, imageType); + + // All enhanced images are saved as png to allow transparency + var enhancedImagePath = EnhancedImageCache.GetResourcePath(cacheGuid + ".png"); + + if (!EnhancedImageCache.ContainsFilePath(enhancedImagePath)) + { + using (var fileStream = File.OpenRead(originalImagePath)) + { + using (var originalImage = Image.FromStream(fileStream, true, false)) + { + //Pass the image through registered enhancers + using (var newImage = await ExecuteImageEnhancers(supportedEnhancers, originalImage, item, imageType, imageIndex).ConfigureAwait(false)) + { + //And then save it in the cache + newImage.Save(enhancedImagePath, ImageFormat.Png); + } + } + } + } + + return enhancedImagePath; + } + + /// <summary> + /// Gets the image cache tag. + /// </summary> + /// <param name="item">The item.</param> + /// <param name="imageType">Type of the image.</param> + /// <param name="imagePath">The image path.</param> + /// <returns>Guid.</returns> + /// <exception cref="System.ArgumentNullException">item</exception> + public Guid GetImageCacheTag(BaseItem item, ImageType imageType, string imagePath) + { + if (item == null) + { + throw new ArgumentNullException("item"); + } + + if (string.IsNullOrEmpty(imagePath)) + { + throw new ArgumentNullException("imagePath"); + } + + var dateModified = GetImageDateModified(item, imagePath); + + var supportedEnhancers = Kernel.ImageEnhancers.Where(i => i.Supports(item, imageType)); + + return GetImageCacheTag(imagePath, dateModified, supportedEnhancers, item, imageType); + } + + /// <summary> + /// Gets the image cache tag. + /// </summary> + /// <param name="originalImagePath">The original image path.</param> + /// <param name="dateModified">The date modified of the original image file.</param> + /// <param name="imageEnhancers">The image enhancers.</param> + /// <param name="item">The item.</param> + /// <param name="imageType">Type of the image.</param> + /// <returns>Guid.</returns> + /// <exception cref="System.ArgumentNullException">item</exception> + public Guid GetImageCacheTag(string originalImagePath, DateTime dateModified, IEnumerable<BaseImageEnhancer> imageEnhancers, BaseItem item, ImageType imageType) + { + if (item == null) + { + throw new ArgumentNullException("item"); + } + + if (imageEnhancers == null) + { + throw new ArgumentNullException("imageEnhancers"); + } + + if (string.IsNullOrEmpty(originalImagePath)) + { + throw new ArgumentNullException("originalImagePath"); + } + + // 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.GetType().Name + i.LastConfigurationChange(item, imageType).Ticks).ToList(); + cacheKeys.Add(originalImagePath + dateModified.Ticks); + + return string.Join("|", cacheKeys.ToArray()).GetMD5(); + } + + /// <summary> + /// Executes the image enhancers. + /// </summary> + /// <param name="imageEnhancers">The image enhancers.</param> + /// <param name="originalImage">The original image.</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<Image> ExecuteImageEnhancers(IEnumerable<BaseImageEnhancer> imageEnhancers, Image originalImage, BaseItem item, ImageType imageType, int imageIndex) + { + var result = originalImage; + + // Run the enhancers sequentially in order of priority + foreach (var enhancer in imageEnhancers) + { + result = await enhancer.EnhanceImageAsync(item, result, imageType, imageIndex).ConfigureAwait(false); + } + + return result; + } + + /// <summary> + /// Releases unmanaged and - optionally - managed resources. + /// </summary> + /// <param name="dispose"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param> + protected override void Dispose(bool dispose) + { + if (dispose) + { + ImageSizeCache.Dispose(); + ResizedImageCache.Dispose(); + CroppedImageCache.Dispose(); + EnhancedImageCache.Dispose(); + } + + base.Dispose(dispose); + } + } +} |
