public async Task<string> ProcessImage(ImageProcessingOptions options)
{
if (options == null)
{
throw new ArgumentNullException("options");
}
var originalImagePath = options.Image.Path;
if (options.HasDefaultOptions(originalImagePath) && options.Enhancers.Count == 0 && !options.CropWhiteSpace)
{
// Just spit out the original file if all the options are default
return originalImagePath;
}
var dateModified = options.Image.DateModified;
if (options.CropWhiteSpace)
{
var tuple = await GetWhitespaceCroppedImage(originalImagePath, dateModified).ConfigureAwait(false);
originalImagePath = tuple.Item1;
dateModified = tuple.Item2;
}
if (options.Enhancers.Count > 0)
{
var tuple = await GetEnhancedImage(new ItemImageInfo
{
DateModified = dateModified,
Type = options.Image.Type,
Path = originalImagePath
}, options.Item, options.ImageIndex, options.Enhancers).ConfigureAwait(false);
originalImagePath = tuple.Item1;
dateModified = tuple.Item2;
}
var originalImageSize = GetImageSize(originalImagePath, dateModified, true);
// Determine the output size based on incoming parameters
var newSize = DrawingUtils.Resize(originalImageSize, options.Width, options.Height, options.MaxWidth, options.MaxHeight);
if (options.HasDefaultOptionsWithoutSize(originalImagePath) && newSize.Equals(originalImageSize) && options.Enhancers.Count == 0)
{
// Just spit out the original file if the new size equals the old
return originalImagePath;
}
var quality = options.Quality ?? 90;
var outputFormat = GetOutputFormat(options.OutputFormat);
var cacheFilePath = GetCacheFilePath(originalImagePath, newSize, quality, dateModified, outputFormat, options.AddPlayedIndicator, options.PercentPlayed, options.UnplayedCount, options.BackgroundColor);
var semaphore = GetLock(cacheFilePath);
await semaphore.WaitAsync().ConfigureAwait(false);
var imageProcessingLockTaken = false;
try
{
CheckDisposed();
if (!File.Exists(cacheFilePath))
{
var newWidth = Convert.ToInt32(newSize.Width);
var newHeight = Convert.ToInt32(newSize.Height);
Directory.CreateDirectory(Path.GetDirectoryName(cacheFilePath));
await _imageProcessingSemaphore.WaitAsync().ConfigureAwait(false);
imageProcessingLockTaken = true;
_imageEncoder.EncodeImage(originalImagePath, cacheFilePath, newWidth, newHeight, quality, options);
}
}
finally
{
if (imageProcessingLockTaken)
{
_imageProcessingSemaphore.Release();
}
semaphore.Release();
}
return cacheFilePath;
}
public async Task<string> ProcessImage(ImageProcessingOptions options)
{
if (options == null)
{
throw new ArgumentNullException("options");
}
var originalImage = options.Image;
if (!originalImage.IsLocalFile)
{
originalImage = await _libraryManager().ConvertImageToLocal(options.Item, originalImage, options.ImageIndex).ConfigureAwait(false);
}
var originalImagePath = originalImage.Path;
if (!_imageEncoder.SupportsImageEncoding)
{
return originalImagePath;
}
if (options.HasDefaultOptions(originalImagePath) && options.Enhancers.Count == 0 && !options.CropWhiteSpace)
{
// Just spit out the original file if all the options are default
return originalImagePath;
}
var dateModified = originalImage.DateModified;
if (options.CropWhiteSpace && _imageEncoder.SupportsImageEncoding)
{
var tuple = await GetWhitespaceCroppedImage(originalImagePath, dateModified).ConfigureAwait(false);
originalImagePath = tuple.Item1;
dateModified = tuple.Item2;
}
if (options.Enhancers.Count > 0)
{
var tuple = await GetEnhancedImage(new ItemImageInfo
{
DateModified = dateModified,
Type = originalImage.Type,
Path = originalImagePath
}, options.Item, options.ImageIndex, options.Enhancers).ConfigureAwait(false);
originalImagePath = tuple.Item1;
dateModified = tuple.Item2;
}
var newSizeInfo = GetNewImageSize(originalImagePath, dateModified, options);
var newSize = newSizeInfo.Item1;
var isSizeChanged = newSizeInfo.Item2;
if (options.HasDefaultOptionsWithoutSize(originalImagePath) && !isSizeChanged && options.Enhancers.Count == 0)
{
// Just spit out the original file if the new size equals the old
return originalImagePath;
}
var quality = options.Quality ?? 90;
var outputFormat = GetOutputFormat(options.OutputFormat);
var cacheFilePath = GetCacheFilePath(originalImagePath, newSize, quality, dateModified, outputFormat, options.AddPlayedIndicator, options.PercentPlayed, options.UnplayedCount, options.BackgroundColor);
var semaphore = GetLock(cacheFilePath);
await semaphore.WaitAsync().ConfigureAwait(false);
var imageProcessingLockTaken = false;
try
{
CheckDisposed();
if (!_fileSystem.FileExists(cacheFilePath))
{
var newWidth = Convert.ToInt32(newSize.Width);
var newHeight = Convert.ToInt32(newSize.Height);
_fileSystem.CreateDirectory(Path.GetDirectoryName(cacheFilePath));
await _imageProcessingSemaphore.WaitAsync().ConfigureAwait(false);
imageProcessingLockTaken = true;
_imageEncoder.EncodeImage(originalImagePath, cacheFilePath, newWidth, newHeight, quality, options);
}
}
finally
{
if (imageProcessingLockTaken)
{
_imageProcessingSemaphore.Release();
}
semaphore.Release();
}
return cacheFilePath;
}
public async Task ProcessImage(ImageProcessingOptions options, Stream toStream)
{
if (options == null)
{
throw new ArgumentNullException("options");
}
if (toStream == null)
{
throw new ArgumentNullException("toStream");
}
var originalImagePath = options.OriginalImagePath;
if (options.HasDefaultOptions() && options.Enhancers.Count == 0 && !options.CropWhiteSpace)
{
// Just spit out the original file if all the options are default
using (var fileStream = _fileSystem.GetFileStream(originalImagePath, FileMode.Open, FileAccess.Read, FileShare.Read, true))
{
await fileStream.CopyToAsync(toStream).ConfigureAwait(false);
return;
}
}
var dateModified = options.OriginalImageDateModified;
if (options.CropWhiteSpace)
{
var tuple = await GetWhitespaceCroppedImage(originalImagePath, dateModified).ConfigureAwait(false);
originalImagePath = tuple.Item1;
dateModified = tuple.Item2;
}
if (options.Enhancers.Count > 0)
{
var tuple = await GetEnhancedImage(originalImagePath, dateModified, options.Item, options.ImageType, options.ImageIndex, options.Enhancers).ConfigureAwait(false);
originalImagePath = tuple.Item1;
dateModified = tuple.Item2;
}
var originalImageSize = GetImageSize(originalImagePath, dateModified);
// Determine the output size based on incoming parameters
var newSize = DrawingUtils.Resize(originalImageSize, options.Width, options.Height, options.MaxWidth, options.MaxHeight);
if (options.HasDefaultOptionsWithoutSize() && newSize.Equals(originalImageSize) && options.Enhancers.Count == 0)
{
// Just spit out the original file if the new size equals the old
using (var fileStream = _fileSystem.GetFileStream(originalImagePath, FileMode.Open, FileAccess.Read, FileShare.Read, true))
{
await fileStream.CopyToAsync(toStream).ConfigureAwait(false);
return;
}
}
var quality = options.Quality ?? 90;
var cacheFilePath = GetCacheFilePath(originalImagePath, newSize, quality, dateModified, options.OutputFormat, options.AddPlayedIndicator, options.PercentPlayed, options.UnplayedCount, options.BackgroundColor);
try
{
using (var fileStream = _fileSystem.GetFileStream(cacheFilePath, FileMode.Open, FileAccess.Read, FileShare.Read, true))
{
await fileStream.CopyToAsync(toStream).ConfigureAwait(false);
return;
}
}
catch (IOException)
{
// Cache file doesn't exist or is currently being written to
}
var semaphore = GetLock(cacheFilePath);
await semaphore.WaitAsync().ConfigureAwait(false);
// Check again in case of lock contention
try
{
using (var fileStream = _fileSystem.GetFileStream(cacheFilePath, FileMode.Open, FileAccess.Read, FileShare.Read, true))
{
await fileStream.CopyToAsync(toStream).ConfigureAwait(false);
semaphore.Release();
return;
}
}
catch (IOException)
{
// Cache file doesn't exist or is currently being written to
}
catch
{
semaphore.Release();
throw;
}
try
{
using (var fileStream = _fileSystem.GetFileStream(originalImagePath, FileMode.Open, FileAccess.Read, FileShare.Read, true))
{
// Copy to memory stream to avoid Image locking file
using (var memoryStream = new MemoryStream())
{
await fileStream.CopyToAsync(memoryStream).ConfigureAwait(false);
using (var originalImage = Image.FromStream(memoryStream, 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
using (var thumbnail = new Bitmap(newWidth, newHeight, PixelFormat.Format32bppPArgb))
{
// Mono throw an exeception if assign 0 to SetResolution
if (originalImage.HorizontalResolution > 0 && originalImage.VerticalResolution > 0)
{
// Preserve the original resolution
thumbnail.SetResolution(originalImage.HorizontalResolution, originalImage.VerticalResolution);
}
using (var thumbnailGraph = Graphics.FromImage(thumbnail))
{
thumbnailGraph.CompositingQuality = CompositingQuality.HighQuality;
thumbnailGraph.SmoothingMode = SmoothingMode.HighQuality;
thumbnailGraph.InterpolationMode = InterpolationMode.HighQualityBicubic;
thumbnailGraph.PixelOffsetMode = PixelOffsetMode.HighQuality;
thumbnailGraph.CompositingMode = string.IsNullOrEmpty(options.BackgroundColor) && !options.UnplayedCount.HasValue && !options.AddPlayedIndicator && !options.PercentPlayed.HasValue ?
CompositingMode.SourceCopy :
CompositingMode.SourceOver;
SetBackgroundColor(thumbnailGraph, options);
thumbnailGraph.DrawImage(originalImage, 0, 0, newWidth, newHeight);
DrawIndicator(thumbnailGraph, newWidth, newHeight, options);
var outputFormat = GetOutputFormat(originalImage, options.OutputFormat);
using (var outputMemoryStream = new MemoryStream())
{
// Save to the memory stream
thumbnail.Save(outputFormat, outputMemoryStream, quality);
var bytes = outputMemoryStream.ToArray();
await toStream.WriteAsync(bytes, 0, bytes.Length).ConfigureAwait(false);
// kick off a task to cache the result
CacheResizedImage(cacheFilePath, bytes, semaphore);
}
}
}
}
}
}
}
catch
{
semaphore.Release();
throw;
}
}
public async Task<string> ProcessImage(ImageProcessingOptions options)
{
if (options == null)
{
throw new ArgumentNullException("options");
}
var originalImagePath = options.Image.Path;
if (options.HasDefaultOptions(originalImagePath) && options.Enhancers.Count == 0 && !options.CropWhiteSpace)
{
// Just spit out the original file if all the options are default
return originalImagePath;
}
var dateModified = options.Image.DateModified;
if (options.CropWhiteSpace)
{
var tuple = await GetWhitespaceCroppedImage(originalImagePath, dateModified).ConfigureAwait(false);
originalImagePath = tuple.Item1;
dateModified = tuple.Item2;
}
if (options.Enhancers.Count > 0)
{
var tuple = await GetEnhancedImage(options.Image, options.Item, options.ImageIndex, options.Enhancers).ConfigureAwait(false);
originalImagePath = tuple.Item1;
dateModified = tuple.Item2;
}
var originalImageSize = GetImageSize(originalImagePath, dateModified);
// Determine the output size based on incoming parameters
var newSize = DrawingUtils.Resize(originalImageSize, options.Width, options.Height, options.MaxWidth, options.MaxHeight);
if (options.HasDefaultOptionsWithoutSize(originalImagePath) && newSize.Equals(originalImageSize) && options.Enhancers.Count == 0)
{
// Just spit out the original file if the new size equals the old
return originalImagePath;
}
var quality = options.Quality ?? 90;
var cacheFilePath = GetCacheFilePath(originalImagePath, newSize, quality, dateModified, options.OutputFormat, options.AddPlayedIndicator, options.PercentPlayed, options.UnplayedCount, options.BackgroundColor);
var semaphore = GetLock(cacheFilePath);
await semaphore.WaitAsync().ConfigureAwait(false);
// Check again in case of lock contention
try
{
if (File.Exists(cacheFilePath))
{
semaphore.Release();
return cacheFilePath;
}
}
catch
{
semaphore.Release();
throw;
}
try
{
var hasPostProcessing = !string.IsNullOrEmpty(options.BackgroundColor) || options.UnplayedCount.HasValue || options.AddPlayedIndicator || options.PercentPlayed > 0;
using (var fileStream = _fileSystem.GetFileStream(originalImagePath, FileMode.Open, FileAccess.Read, FileShare.Read, true))
{
// Copy to memory stream to avoid Image locking file
using (var memoryStream = new MemoryStream())
{
await fileStream.CopyToAsync(memoryStream).ConfigureAwait(false);
using (var originalImage = Image.FromStream(memoryStream, true, false))
{
var newWidth = Convert.ToInt32(newSize.Width);
var newHeight = Convert.ToInt32(newSize.Height);
var selectedOutputFormat = options.OutputFormat;
_logger.Debug("Processing image to {0}", selectedOutputFormat);
// Graphics.FromImage will throw an exception if the PixelFormat is Indexed, so we need to handle that here
// Also, Webp only supports Format32bppArgb and Format32bppRgb
var pixelFormat = selectedOutputFormat == Model.Drawing.ImageFormat.Webp
? PixelFormat.Format32bppArgb
: PixelFormat.Format32bppPArgb;
using (var thumbnail = new Bitmap(newWidth, newHeight, pixelFormat))
{
// Mono throw an exeception if assign 0 to SetResolution
if (originalImage.HorizontalResolution > 0 && originalImage.VerticalResolution > 0)
{
// Preserve the original resolution
thumbnail.SetResolution(originalImage.HorizontalResolution, originalImage.VerticalResolution);
}
using (var thumbnailGraph = Graphics.FromImage(thumbnail))
{
thumbnailGraph.CompositingQuality = CompositingQuality.HighQuality;
thumbnailGraph.SmoothingMode = SmoothingMode.HighQuality;
thumbnailGraph.InterpolationMode = InterpolationMode.HighQualityBicubic;
thumbnailGraph.PixelOffsetMode = PixelOffsetMode.HighQuality;
thumbnailGraph.CompositingMode = !hasPostProcessing ?
CompositingMode.SourceCopy :
CompositingMode.SourceOver;
SetBackgroundColor(thumbnailGraph, options);
thumbnailGraph.DrawImage(originalImage, 0, 0, newWidth, newHeight);
DrawIndicator(thumbnailGraph, newWidth, newHeight, options);
var outputFormat = GetOutputFormat(originalImage, selectedOutputFormat);
Directory.CreateDirectory(Path.GetDirectoryName(cacheFilePath));
// Save to the cache location
using (var cacheFileStream = _fileSystem.GetFileStream(cacheFilePath, FileMode.Create, FileAccess.Write, FileShare.Read, false))
{
if (selectedOutputFormat == Model.Drawing.ImageFormat.Webp)
{
SaveToWebP(thumbnail, cacheFileStream, quality);
}
else
{
// Save to the memory stream
thumbnail.Save(outputFormat, cacheFileStream, quality);
}
}
return cacheFilePath;
}
}
}
}
}
}
finally
{
semaphore.Release();
}
}
