Package gov.nih.mipav.model.file

Class jxlatte

java.lang.Object
gov.nih.mipav.model.file.jxlatte
public class jxlatte extends Object
Copyright 2022-2024 Leo Izen (Traneptora) Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. # jxlatte Work-in-progress pure java JPEG XL decoder ## Compiling JXLatte is built with the [Meson build system](https://mesonbuild.com/). To build, create a build directory, for example, with `mkdir build invalid input: '&'invalid input: '&' cd build`. Then run `meson setup ../` to set up the build directory, and `ninja` to compile JXLatte. ## Running JXLatte can be executed just like any normal jar file: ```sh java -jar jxlatte.jar samples/art.jxl output.png ``` The JAR can also be used as a library. To use it, add it to your application's classpath. ```java InputStream input = someInputStream; OutputStream output = someOutputStream; JXLDecoder decoder = new JXLDecoder(input); JXLImage image = decoder.decode(); PNGWriter writer = new PNGWriter(image); writer.write(output); ``` ## Features Supported features: - All static Modular images - All lossless images - All JXL Art - All Lossy Modular images - All static VarDCT Images - All JPEG reconstructions - Other static VarDCT images - Varblock Visualization - Output: - PNG - SDR - HDR - PFM Features not yet supported at this time: - Progressive Decoding - Region-of-interest Decoding - Animation

  • Field Details

    • SQRT_2

      public final float SQRT_2

    • SQRT_H

      public final float SQRT_H

    • SQRT_F

      public final float SQRT_F

    • PHI_BAR

      public final float PHI_BAR

    • PHI

      public final float PHI

    • ZERO

      private final jxlatte.Point ZERO

    • cosineLut

      private float[][][] cosineLut

    • root2

      final double root2

  • Constructor Details

    • jxlatte

      public jxlatte()

  • Method Details

    • initcosineLut

      void initcosineLut()

    • unpackSigned

      public int unpackSigned(int value)

    • round

      public int round(float d)

    • erf

      public float erf(float z)

    • inverseDCTHorizontal

      public void inverseDCTHorizontal(float[] src, float[] dest, int xStartIn, int xStartOut, int xLogLength, int xLength)

    • forwardDCTHorizontal

      public void forwardDCTHorizontal(float[] src, float[] dest, int xStartIn, int xStartOut, int xLogLength, int xLength)

    • inverseDCT2D

      public void inverseDCT2D(float[][] src, float[][] dest, jxlatte.Point startIn, jxlatte.Point startOut, jxlatte.Dimension size, float[][] scratchSpace0, float[][] scratchSpace1, boolean transposed)

    • forwardDCT2D

      public void forwardDCT2D(float[][] src, float[][] dest, jxlatte.Point startIn, jxlatte.Point startOut, jxlatte.Dimension length, float[][] scratchSpace0, float[][] scratchSpace1)

    • transposeMatrixInto

      public void transposeMatrixInto(float[][] src, float[][] dest, jxlatte.Point srcStart, jxlatte.Point destStart, int srcHeight, int srcWidth)

    • transposeMatrix

      public float[][] transposeMatrix(float[][] matrix, int height, int width)

    • ceilLog1p

      public int ceilLog1p(long x)
      Returns:
      ceil(log2(x + 1))

    • ceilLog1pSt

      public static int ceilLog1pSt(long x)

    • ceilLog2

      public int ceilLog2(long x)

    • ceilLog2St

      public static int ceilLog2St(long x)

    • ceilDiv

      public int ceilDiv(int numerator, int denominator)

    • floorLog1p

      public int floorLog1p(long x)

    • min

      public int min(int... a)

    • max

      public int max(int... a)

    • max

      public float max(float... a)

    • signedPow

      public float signedPow(float base, float exponent)

    • clamp

      public int clamp(int v, int a, int b, int c)

    • clamp

      public int clamp(int v, int a, int b)

    • clampAsc

      public float clampAsc(float v, float lower, float upper)

    • clamp

      public float clamp(float v, float a, float b)

    • matrixMutliply

      public float[] matrixMutliply(float[][] matrix, float[] columnVector)

    • matrixMutliply3InPlace

      public void matrixMutliply3InPlace(float[][] matrix, float[] columnVector)

    • matrixMutliply

      public float[] matrixMutliply(float[] rowVector, float[][] matrix)

    • matrixMultiply

      public float[][] matrixMultiply(float[][] left, float[][] right)

    • matrixIdentity

      public float[][] matrixIdentity(int n)

    • matrixMultiply

      public float[][] matrixMultiply(float[][]... matrices)

    • invertMatrix3x3

      public float[][] invertMatrix3x3(float[][] matrix)

    • mirrorCoordinate

      public int mirrorCoordinate(int coordinate, int size)

    • floatFromF16

      public float floatFromF16(int bits16)

    • deepCopyOf

      public float[][][] deepCopyOf(float[][][] array)