mirror of https://github.com/SixLabors/ImageSharp
Vicente Penades
8 years ago
2 changed files with 209 additions and 70 deletions
@ -0,0 +1,185 @@ |
|||
using System; |
|||
using System.Collections.Concurrent; |
|||
using System.Collections.Generic; |
|||
using System.Linq; |
|||
using System.Text; |
|||
|
|||
namespace SixLabors.ImageSharp.Formats |
|||
{ |
|||
/// <summary>
|
|||
/// Collection of Image Formats to be used in <see cref="Configuration" /> class.
|
|||
/// </summary>
|
|||
public class ImageFormatsManager |
|||
{ |
|||
/// <summary>
|
|||
/// Initializes a new instance of the <see cref="ImageFormatsManager" /> class.
|
|||
/// </summary>
|
|||
public ImageFormatsManager() |
|||
{ |
|||
} |
|||
|
|||
/// <summary>
|
|||
/// The list of supported <see cref="IImageEncoder"/> keyed to mime types.
|
|||
/// </summary>
|
|||
private readonly ConcurrentDictionary<IImageFormat, IImageEncoder> mimeTypeEncoders = new ConcurrentDictionary<IImageFormat, IImageEncoder>(); |
|||
|
|||
/// <summary>
|
|||
/// The list of supported <see cref="IImageEncoder"/> keyed to mime types.
|
|||
/// </summary>
|
|||
private readonly ConcurrentDictionary<IImageFormat, IImageDecoder> mimeTypeDecoders = new ConcurrentDictionary<IImageFormat, IImageDecoder>(); |
|||
|
|||
/// <summary>
|
|||
/// The list of supported <see cref="IImageFormat"/>s.
|
|||
/// </summary>
|
|||
private readonly ConcurrentBag<IImageFormat> imageFormats = new ConcurrentBag<IImageFormat>(); |
|||
|
|||
/// <summary>
|
|||
/// The list of supported <see cref="IImageFormatDetector"/>s.
|
|||
/// </summary>
|
|||
private ConcurrentBag<IImageFormatDetector> imageFormatDetectors = new ConcurrentBag<IImageFormatDetector>(); |
|||
|
|||
/// <summary>
|
|||
/// Gets the maximum header size of all the formats.
|
|||
/// </summary>
|
|||
internal int MaxHeaderSize { get; private set; } |
|||
|
|||
/// <summary>
|
|||
/// Gets the currently registered <see cref="IImageFormat"/>s.
|
|||
/// </summary>
|
|||
public IEnumerable<IImageFormat> ImageFormats => this.imageFormats; |
|||
|
|||
/// <summary>
|
|||
/// Gets the currently registered <see cref="IImageFormatDetector"/>s.
|
|||
/// </summary>
|
|||
internal IEnumerable<IImageFormatDetector> FormatDetectors => this.imageFormatDetectors; |
|||
|
|||
/// <summary>
|
|||
/// Gets the currently registered <see cref="IImageDecoder"/>s.
|
|||
/// </summary>
|
|||
internal IEnumerable<KeyValuePair<IImageFormat, IImageDecoder>> ImageDecoders => this.mimeTypeDecoders; |
|||
|
|||
/// <summary>
|
|||
/// Gets the currently registered <see cref="IImageEncoder"/>s.
|
|||
/// </summary>
|
|||
internal IEnumerable<KeyValuePair<IImageFormat, IImageEncoder>> ImageEncoders => this.mimeTypeEncoders; |
|||
|
|||
/// <summary>
|
|||
/// Registers a new format provider.
|
|||
/// </summary>
|
|||
/// <param name="format">The format to register as a known format.</param>
|
|||
public void AddImageFormat(IImageFormat format) |
|||
{ |
|||
Guard.NotNull(format, nameof(format)); |
|||
Guard.NotNull(format.MimeTypes, nameof(format.MimeTypes)); |
|||
Guard.NotNull(format.FileExtensions, nameof(format.FileExtensions)); |
|||
this.imageFormats.Add(format); |
|||
} |
|||
|
|||
/// <summary>
|
|||
/// For the specified file extensions type find the e <see cref="IImageFormat"/>.
|
|||
/// </summary>
|
|||
/// <param name="extension">The extension to discover</param>
|
|||
/// <returns>The <see cref="IImageFormat"/> if found otherwise null</returns>
|
|||
public IImageFormat FindFormatByFileExtension(string extension) |
|||
{ |
|||
return this.imageFormats.FirstOrDefault(x => x.FileExtensions.Contains(extension, StringComparer.OrdinalIgnoreCase)); |
|||
} |
|||
|
|||
/// <summary>
|
|||
/// For the specified mime type find the <see cref="IImageFormat"/>.
|
|||
/// </summary>
|
|||
/// <param name="mimeType">The mime-type to discover</param>
|
|||
/// <returns>The <see cref="IImageFormat"/> if found; otherwise null</returns>
|
|||
public IImageFormat FindFormatByMimeType(string mimeType) |
|||
{ |
|||
return this.imageFormats.FirstOrDefault(x => x.MimeTypes.Contains(mimeType, StringComparer.OrdinalIgnoreCase)); |
|||
} |
|||
|
|||
/// <summary>
|
|||
/// Sets a specific image encoder as the encoder for a specific image format.
|
|||
/// </summary>
|
|||
/// <param name="imageFormat">The image format to register the encoder for.</param>
|
|||
/// <param name="encoder">The encoder to use,</param>
|
|||
public void SetEncoder(IImageFormat imageFormat, IImageEncoder encoder) |
|||
{ |
|||
Guard.NotNull(imageFormat, nameof(imageFormat)); |
|||
Guard.NotNull(encoder, nameof(encoder)); |
|||
this.AddImageFormat(imageFormat); |
|||
this.mimeTypeEncoders.AddOrUpdate(imageFormat, encoder, (s, e) => encoder); |
|||
} |
|||
|
|||
/// <summary>
|
|||
/// Sets a specific image decoder as the decoder for a specific image format.
|
|||
/// </summary>
|
|||
/// <param name="imageFormat">The image format to register the encoder for.</param>
|
|||
/// <param name="decoder">The decoder to use,</param>
|
|||
public void SetDecoder(IImageFormat imageFormat, IImageDecoder decoder) |
|||
{ |
|||
Guard.NotNull(imageFormat, nameof(imageFormat)); |
|||
Guard.NotNull(decoder, nameof(decoder)); |
|||
this.AddImageFormat(imageFormat); |
|||
this.mimeTypeDecoders.AddOrUpdate(imageFormat, decoder, (s, e) => decoder); |
|||
} |
|||
|
|||
/// <summary>
|
|||
/// Removes all the registered image format detectors.
|
|||
/// </summary>
|
|||
public void ClearImageFormatDetectors() |
|||
{ |
|||
this.imageFormatDetectors = new ConcurrentBag<IImageFormatDetector>(); |
|||
} |
|||
|
|||
/// <summary>
|
|||
/// Adds a new detector for detecting mime types.
|
|||
/// </summary>
|
|||
/// <param name="detector">The detector to add</param>
|
|||
public void AddImageFormatDetector(IImageFormatDetector detector) |
|||
{ |
|||
Guard.NotNull(detector, nameof(detector)); |
|||
this.imageFormatDetectors.Add(detector); |
|||
this.SetMaxHeaderSize(); |
|||
} |
|||
|
|||
/// <summary>
|
|||
/// For the specified mime type find the decoder.
|
|||
/// </summary>
|
|||
/// <param name="format">The format to discover</param>
|
|||
/// <returns>The <see cref="IImageDecoder"/> if found otherwise null</returns>
|
|||
public IImageDecoder FindDecoder(IImageFormat format) |
|||
{ |
|||
Guard.NotNull(format, nameof(format)); |
|||
if (this.mimeTypeDecoders.TryGetValue(format, out IImageDecoder decoder)) |
|||
{ |
|||
return decoder; |
|||
} |
|||
|
|||
return null; |
|||
} |
|||
|
|||
/// <summary>
|
|||
/// For the specified mime type find the encoder.
|
|||
/// </summary>
|
|||
/// <param name="format">The format to discover</param>
|
|||
/// <returns>The <see cref="IImageEncoder"/> if found otherwise null</returns>
|
|||
public IImageEncoder FindEncoder(IImageFormat format) |
|||
{ |
|||
Guard.NotNull(format, nameof(format)); |
|||
if (this.mimeTypeEncoders.TryGetValue(format, out IImageEncoder encoder)) |
|||
{ |
|||
return encoder; |
|||
} |
|||
|
|||
return null; |
|||
} |
|||
|
|||
/// <summary>
|
|||
/// Sets the max header size.
|
|||
/// </summary>
|
|||
private void SetMaxHeaderSize() |
|||
{ |
|||
this.MaxHeaderSize = this.imageFormatDetectors.Max(x => x.HeaderSize); |
|||
} |
|||
|
|||
|
|||
} |
|||
} |
|||
Loading…
Reference in new issue