CoreJ2K 1.0.4.21
dotnet add package CoreJ2K --version 1.0.4.21
NuGet\Install-Package CoreJ2K -Version 1.0.4.21
<PackageReference Include="CoreJ2K" Version="1.0.4.21" />
paket add CoreJ2K --version 1.0.4.21
#r "nuget: CoreJ2K, 1.0.4.21"
// Install CoreJ2K as a Cake Addin #addin nuget:?package=CoreJ2K&version=1.0.4.21 // Install CoreJ2K as a Cake Tool #tool nuget:?package=CoreJ2K&version=1.0.4.21
CoreJ2K - A Managed and Portable JPEG2000 Codec
Copyright (c) 1999-2000 JJ2000 Partners;
Copyright (c) 2007-2012 Jason S. Clary;
Copyright (c) 2013-2016 Anders Gustafsson, Cureos AB;
Copyright (c) 2024 Sjofn LLC.
Licensed and distributable under the terms of the BSD license
Summary
This is an adaptation of CSJ2K, which provides JPEG 2000 decoding and encoding functionality to .NET based platforms. CSJ2K is by itself a C# port of the Java package jj2000, version 5.1. This is a fork of CSJ2K for .NET Standard 2.1 making it possible to implement JPEG decoding and encoding on any platform.
Installation
Apart from building the relevant class libraries from source, pre-built packages for the supported platforms can also be obtained via NuGet.
Usage
The Library provides interfaces for image rendering, file I/O and logging.
Decoding
To decode a JPEG 2000 encoded image, call one of the following methods:
public class J2kImage
{
public static PortableImage FromStream(Stream, ParameterList = null);
public static PortableImage FromBytes(byte[], ParameterList = null);
public static PortableImage FromFile(string, ParameterList = null);
}
The returned PortableImage
offers a "cast" method As<T>()
to obtain an image in the type relevant for the platform. When using the SKBitmapImageCreator
on .NET, a cast to SKBitmap
or SKPixmap
would suffice:
var bitmap = decodedImage.As<SKBitmap>();
Encoding
To encode an image, the following overloads are available:
public class J2kImage
{
public static byte[] ToBytes(object, ParameterList = null);
public static byte[] ToBytes(BlkImgDataSrc, ParameterList = null);
}
The first overload takes an platform-specific image object
. This is still works-in-progress, but an implementation is available for SKBitmap
objects.
The second overload takes an CSJ2K specific object implementing the BlkImgDataSrc
interface. When Portable Graymap (PGM), Portable Pixelmap (PPM) or JPEG2000 conformance testing format (PGX) objects are available as Stream
s,
it is possible to create BlkImgDataSrc
objects using either of the following methods:
J2kImage.CreateEncodableSource(Stream);
J2kImage.CreateEncodableSource(IList<Stream>);
For PGM and PPM images, you would normally use the single Stream
overload, whereas for PGX images, you may enter one Stream
object per color component.
Links
Product | Versions Compatible and additional computed target framework versions. |
---|---|
.NET | net5.0 was computed. net5.0-windows was computed. net6.0 was computed. net6.0-android was computed. net6.0-ios was computed. net6.0-maccatalyst was computed. net6.0-macos was computed. net6.0-tvos was computed. net6.0-windows was computed. net7.0 was computed. net7.0-android was computed. net7.0-ios was computed. net7.0-maccatalyst was computed. net7.0-macos was computed. net7.0-tvos was computed. net7.0-windows was computed. net8.0 was computed. net8.0-android was computed. net8.0-browser was computed. net8.0-ios was computed. net8.0-maccatalyst was computed. net8.0-macos was computed. net8.0-tvos was computed. net8.0-windows was computed. |
.NET Core | netcoreapp2.0 was computed. netcoreapp2.1 was computed. netcoreapp2.2 was computed. netcoreapp3.0 was computed. netcoreapp3.1 was computed. |
.NET Standard | netstandard2.0 is compatible. netstandard2.1 is compatible. |
.NET Framework | net461 was computed. net462 was computed. net463 was computed. net47 was computed. net471 was computed. net472 was computed. net48 was computed. net481 was computed. |
MonoAndroid | monoandroid was computed. |
MonoMac | monomac was computed. |
MonoTouch | monotouch was computed. |
Tizen | tizen40 was computed. tizen60 was computed. |
Xamarin.iOS | xamarinios was computed. |
Xamarin.Mac | xamarinmac was computed. |
Xamarin.TVOS | xamarintvos was computed. |
Xamarin.WatchOS | xamarinwatchos was computed. |
-
.NETStandard 2.0
- No dependencies.
-
.NETStandard 2.1
- No dependencies.
NuGet packages (1)
Showing the top 1 NuGet packages that depend on CoreJ2K:
Package | Downloads |
---|---|
CoreJ2K.Skia
.NETStandard JPEG-2000 codec library with Skia support |
GitHub repositories
This package is not used by any popular GitHub repositories.