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optimize image processor when gdi can be skipped

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This commit is contained in:
Luke Pulverenti
2013-11-07 10:57:12 -05:00
parent d609d0edec
commit 2fc662c9e9
7 changed files with 153 additions and 70 deletions
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115
MediaBrowser.Server.Implementations/Drawing/ImageProcessor.cs
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@@ -7,6 +7,7 @@ using MediaBrowser.Controller.Providers;
using MediaBrowser.Model.Drawing;
using MediaBrowser.Model.Entities;
using MediaBrowser.Model.Logging;
using MediaBrowser.Model.Serialization;
using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
@@ -24,7 +25,7 @@ namespace MediaBrowser.Server.Implementations.Drawing
/// <summary>
/// Class ImageProcessor
/// </summary>
public class ImageProcessor : IImageProcessor
public class ImageProcessor : IImageProcessor, IDisposable
{
/// <summary>
/// The us culture
@@ -34,7 +35,7 @@ namespace MediaBrowser.Server.Implementations.Drawing
/// <summary>
/// The _cached imaged sizes
/// </summary>
private readonly ConcurrentDictionary<string, ImageSize> _cachedImagedSizes = new ConcurrentDictionary<string, ImageSize>();
private readonly ConcurrentDictionary<Guid, ImageSize> _cachedImagedSizes;
/// <summary>
/// Gets the list of currently registered image processors
@@ -49,21 +50,41 @@ namespace MediaBrowser.Server.Implementations.Drawing
private readonly ILogger _logger;
private readonly IFileSystem _fileSystem;
private readonly IJsonSerializer _jsonSerializer;
private readonly IServerApplicationPaths _appPaths;
private readonly string _imageSizeCachePath;
private readonly string _croppedWhitespaceImageCachePath;
private readonly string _enhancedImageCachePath;
private readonly string _resizedImageCachePath;
public ImageProcessor(ILogger logger, IServerApplicationPaths appPaths, IFileSystem fileSystem)
public ImageProcessor(ILogger logger, IServerApplicationPaths appPaths, IFileSystem fileSystem, IJsonSerializer jsonSerializer)
{
_logger = logger;
_fileSystem = fileSystem;
_jsonSerializer = jsonSerializer;
_appPaths = appPaths;
_imageSizeCachePath = Path.Combine(appPaths.ImageCachePath, "image-sizes");
_croppedWhitespaceImageCachePath = Path.Combine(appPaths.ImageCachePath, "cropped-images");
_enhancedImageCachePath = Path.Combine(appPaths.ImageCachePath, "enhanced-images");
_resizedImageCachePath = Path.Combine(appPaths.ImageCachePath, "resized-images");
_saveImageSizeTimer = new Timer(SaveImageSizeCallback, null, Timeout.Infinite, Timeout.Infinite);
Dictionary<Guid, ImageSize> sizeDictionary;
try
{
sizeDictionary = jsonSerializer.DeserializeFromFile<Dictionary<Guid, ImageSize>>(ImageSizeFile);
}
catch (IOException)
{
// No biggie
sizeDictionary = new Dictionary<Guid, ImageSize>();
}
_cachedImagedSizes = new ConcurrentDictionary<Guid, ImageSize>(sizeDictionary);
}
public void AddParts(IEnumerable<IImageEnhancer> enhancers)
@@ -84,7 +105,7 @@ namespace MediaBrowser.Server.Implementations.Drawing
}
var originalImagePath = options.OriginalImagePath;
if (options.HasDefaultOptions())
{
// Just spit out the original file if all the options are default
@@ -125,7 +146,7 @@ namespace MediaBrowser.Server.Implementations.Drawing
return;
}
}
var quality = options.Quality ?? 90;
var cacheFilePath = GetCacheFilePath(originalImagePath, newSize, quality, dateModified, options.OutputFormat, options.AddPlayedIndicator, options.PercentPlayed, options.BackgroundColor);
@@ -485,11 +506,13 @@ namespace MediaBrowser.Server.Implementations.Drawing
ImageSize size;
if (!_cachedImagedSizes.TryGetValue(name, out size))
{
size = GetImageSizeInternal(name, path);
var cacheHash = name.GetMD5();
_cachedImagedSizes.AddOrUpdate(name, size, (keyName, oldValue) => size);
if (!_cachedImagedSizes.TryGetValue(cacheHash, out size))
{
size = GetImageSizeInternal(path);
_cachedImagedSizes.AddOrUpdate(cacheHash, size, (keyName, oldValue) => size);
}
return size;
@@ -498,62 +521,47 @@ namespace MediaBrowser.Server.Implementations.Drawing
/// <summary>
/// Gets the image size internal.
/// </summary>
/// <param name="cacheKey">The cache key.</param>
/// <param name="path">The path.</param>
/// <returns>ImageSize.</returns>
private ImageSize GetImageSizeInternal(string cacheKey, string path)
private ImageSize GetImageSizeInternal(string path)
{
// Now check the file system cache
var fullCachePath = GetCachePath(_imageSizeCachePath, cacheKey, ".txt");
var size = ImageHeader.GetDimensions(path, _logger, _fileSystem);
try
{
var result = File.ReadAllText(fullCachePath).Split('|');
StartSaveImageSizeTimer();
return new ImageSize
{
Width = double.Parse(result[0], UsCulture),
Height = double.Parse(result[1], UsCulture)
};
}
catch (IOException)
{
// Cache file doesn't exist or is currently being written to
}
return new ImageSize { Width = size.Width, Height = size.Height };
}
var syncLock = GetObjectLock(fullCachePath);
private readonly Timer _saveImageSizeTimer;
private const int SaveImageSizeTimeout = 5000;
private readonly object _saveImageSizeLock = new object();
private void StartSaveImageSizeTimer()
{
_saveImageSizeTimer.Change(SaveImageSizeTimeout, Timeout.Infinite);
}
lock (syncLock)
private void SaveImageSizeCallback(object state)
{
lock (_saveImageSizeLock)
{
try
{
var result = File.ReadAllText(fullCachePath).Split('|');
return new ImageSize
{
Width = double.Parse(result[0], UsCulture),
Height = double.Parse(result[1], UsCulture)
};
var path = ImageSizeFile;
Directory.CreateDirectory(Path.GetDirectoryName(path));
_jsonSerializer.SerializeToFile(_cachedImagedSizes, path);
}
catch (FileNotFoundException)
catch (Exception ex)
{
// Cache file doesn't exist no biggie
}
catch (DirectoryNotFoundException)
{
// Cache file doesn't exist no biggie
_logger.ErrorException("Error saving image size file", ex);
}
}
}
var size = ImageHeader.GetDimensions(path, _logger, _fileSystem);
var parentPath = Path.GetDirectoryName(fullCachePath);
Directory.CreateDirectory(parentPath);
// Update the file system cache
File.WriteAllText(fullCachePath, size.Width.ToString(UsCulture) + @"|" + size.Height.ToString(UsCulture));
return new ImageSize { Width = size.Width, Height = size.Height };
private string ImageSizeFile
{
get
{
return Path.Combine(_appPaths.DataPath, "imagesizes.json");
}
}
@@ -882,5 +890,10 @@ namespace MediaBrowser.Server.Implementations.Drawing
}).ToList();
}
public void Dispose()
{
_saveImageSizeTimer.Dispose();
}
}
}