kc3-lang/libjpeg-turbo/java/TJDecomp.java

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• Hash : a2728582
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  Date : 2024-09-03T07:54:17
  

  TurboJPEG: ICC profile support
  

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• java/TJDecomp.java

• /*
   * Copyright (C)2011-2012, 2014-2015, 2017-2018, 2022-2024 D. R. Commander.
   *                                                         All Rights Reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   *
   * - Redistributions of source code must retain the above copyright notice,
   *   this list of conditions and the following disclaimer.
   * - Redistributions in binary form must reproduce the above copyright notice,
   *   this list of conditions and the following disclaimer in the documentation
   *   and/or other materials provided with the distribution.
   * - Neither the name of the libjpeg-turbo Project nor the names of its
   *   contributors may be used to endorse or promote products derived from this
   *   software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS",
   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
   * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   * POSSIBILITY OF SUCH DAMAGE.
   */
  
  /*
   * This program demonstrates how to use the TurboJPEG C API to approximate the
   * functionality of the IJG's djpeg program.  djpeg features that are not
   * covered:
   *
   * - OS/2 BMP, GIF, and Targa output file formats [legacy feature]
   * - Color quantization and dithering [legacy feature]
   * - The floating-point IDCT method [legacy feature]
   * - Extracting an ICC color management profile
   * - Progress reporting
   * - Skipping rows (i.e. exclusive rather than inclusive partial decompression)
   * - Debug output
   */
  
  import java.io.*;
  import java.util.*;
  import org.libjpegturbo.turbojpeg.*;
  
  
  @SuppressWarnings("checkstyle:JavadocType")
  final class TJDecomp {
  
    private TJDecomp() {}
  
    static final String CLASS_NAME =
      new TJDecomp().getClass().getName();
  
  
    private static boolean isCropped(java.awt.Rectangle cr) {
      return (cr.x != 0 || cr.y != 0 || cr.width != 0 || cr.height != 0);
    }
  
  
    private static String tjErrorMsg;
    private static int tjErrorCode = -1;
  
    static void handleTJException(TJException e, int stopOnWarning)
                                  throws TJException {
      String errorMsg = e.getMessage();
      int errorCode = e.getErrorCode();
  
      if (stopOnWarning != 1 && errorCode == TJ.ERR_WARNING) {
        if (tjErrorMsg == null || !tjErrorMsg.equals(errorMsg) ||
            tjErrorCode != errorCode) {
          tjErrorMsg = errorMsg;
          tjErrorCode = errorCode;
          System.out.println("WARNING: " + errorMsg);
        }
      } else
        throw e;
    }
  
  
    static void usage() {
      int i;
      TJScalingFactor[] scalingFactors = TJ.getScalingFactors();
      int numScalingFactors = scalingFactors.length;
  
      System.out.println("\nUSAGE: java [Java options] " + CLASS_NAME +
                         " [options] <JPEG image> <Output image>\n");
  
      System.out.println("The output image will be in Windows BMP or PBMPLUS (PPM/PGM) format, depending");
      System.out.println("on the file extension.\n");
  
      System.out.println("GENERAL OPTIONS (CAN BE ABBREVBIATED)");
      System.out.println("-------------------------------------");
      System.out.println("-icc FILE");
      System.out.println("    Extract the ICC (International Color Consortium) color profile from the");
      System.out.println("    JPEG image to the specified file");
      System.out.println("-strict");
      System.out.println("    Treat all warnings as fatal; abort immediately if incomplete or corrupt");
      System.out.println("    data is encountered in the JPEG image, rather than trying to salvage the");
      System.out.println("    rest of the image\n");
  
      System.out.println("LOSSY JPEG OPTIONS (CAN BE ABBREVIATED)");
      System.out.println("---------------------------------------");
      System.out.println("-crop WxH+X+Y");
      System.out.println("    Decompress only the specified region of the JPEG image.  (W, H, X, and Y");
      System.out.println("    are the width, height, left boundary, and upper boundary of the region, all");
      System.out.println("    specified relative to the scaled image dimensions.)  If necessary, X will");
      System.out.println("    be shifted left to the nearest iMCU boundary, and W will be increased");
      System.out.println("    accordingly.");
      System.out.println("-dct fast");
      System.out.println("    Use less accurate IDCT algorithm [legacy feature]");
      System.out.println("-dct int");
      System.out.println("    Use more accurate IDCT algorithm [default]");
      System.out.println("-grayscale");
      System.out.println("    Decompress a full-color JPEG image into a grayscale output image");
      System.out.println("-maxmemory N");
      System.out.println("    Memory limit (in megabytes) for intermediate buffers used with progressive");
      System.out.println("    JPEG decompression [default = no limit]");
      System.out.println("-maxscans N");
      System.out.println("    Refuse to decompress progressive JPEG images that have more than N scans");
      System.out.println("-nosmooth");
      System.out.println("    Use the fastest chrominance upsampling algorithm available");
      System.out.println("-rgb");
      System.out.println("    Decompress a grayscale JPEG image into a full-color output image");
      System.out.println("-scale M/N");
      System.out.println("    Scale the width/height of the JPEG image by a factor of M/N when");
      System.out.print("    decompressing it (M/N = ");
      for (i = 0; i < numScalingFactors; i++) {
        System.out.format("%d/%d", scalingFactors[i].getNum(),
                          scalingFactors[i].getDenom());
        if (numScalingFactors == 2 && i != numScalingFactors - 1)
          System.out.print(" or ");
        else if (numScalingFactors > 2) {
          if (i != numScalingFactors - 1)
            System.out.print(", ");
          if (i == numScalingFactors - 2)
            System.out.print("or ");
        }
        if (i % 8 == 0 && i != 0) System.out.print("\n    ");
      }
      System.out.println(")\n");
  
      System.exit(1);
    }
  
  
    static boolean matchArg(String arg, String string, int minChars) {
      if (arg.length() > string.length() || arg.length() < minChars)
        return false;
  
      int cmpChars = Math.max(arg.length(), minChars);
      string = string.substring(0, cmpChars);
  
      return arg.equalsIgnoreCase(string);
    }
  
  
    public static void main(String[] argv) {
      int exitStatus = 0;
      TJDecompressor tjd = null;
      FileInputStream fis = null;
      FileOutputStream fos = null;
  
      try {
  
        int i;
        int colorspace, fastDCT = -1, fastUpsample = -1, maxMemory = -1,
          maxScans = -1, pixelFormat = TJ.PF_UNKNOWN, precision,
          stopOnWarning = -1, subsamp;
        java.awt.Rectangle croppingRegion = TJ.UNCROPPED;
        String iccFilename = null;
        TJScalingFactor scalingFactor = TJ.UNSCALED;
        int width, height;
        byte[] jpegBuf, iccBuf = null;
        Object dstBuf = null;
  
        for (i = 0; i < argv.length; i++) {
          if (matchArg(argv[i], "-crop", 2) && i < argv.length - 1) {
            int tempWidth = -1, tempHeight = -1, tempX = -1, tempY = -1;
            Scanner scanner = new Scanner(argv[++i]).useDelimiter("x|X|\\+");
  
            try {
              tempWidth = scanner.nextInt();
              tempHeight = scanner.nextInt();
              tempX = scanner.nextInt();
              tempY = scanner.nextInt();
            } catch (Exception e) {}
  
            if (tempWidth < 1 || tempHeight < 1 || tempX < 0 || tempY < 0)
              usage();
            croppingRegion.width = tempWidth;
            croppingRegion.height = tempHeight;
            croppingRegion.x = tempX;
            croppingRegion.y = tempY;
          } else if (matchArg(argv[i], "-dct", 2) && i < argv.length - 1) {
            i++;
            if (matchArg(argv[i], "fast", 1))
              fastDCT = 1;
            else if (!matchArg(argv[i], "int", 1))
              usage();
          } else if (matchArg(argv[i], "-grayscale", 2) ||
                     matchArg(argv[i], "-greyscale", 2))
            pixelFormat = TJ.PF_GRAY;
          else if (matchArg(argv[i], "-icc", 2) && i < argv.length - 1)
            iccFilename = argv[++i];
          else if (matchArg(argv[i], "-maxscans", 5) && i < argv.length - 1) {
            int temp = -1;
  
            try {
              temp = Integer.parseInt(argv[++i]);
            } catch (NumberFormatException e) {}
            if (temp < 0)
              usage();
            maxScans = temp;
          } else if (matchArg(argv[i], "-maxmemory", 2) && i < argv.length - 1) {
            int temp = -1;
  
            try {
              temp = Integer.parseInt(argv[++i]);
            } catch (NumberFormatException e) {}
            if (temp < 0)
              usage();
            maxMemory = temp;
          } else if (matchArg(argv[i], "-nosmooth", 2))
            fastUpsample = 1;
          else if (matchArg(argv[i], "-rgb", 2))
            pixelFormat = TJ.PF_RGB;
          else if (matchArg(argv[i], "-strict", 3))
            stopOnWarning = 1;
          else if (matchArg(argv[i], "-scale", 2) && i < argv.length - 1) {
            int tempNum = 0, tempDenom = 0;
            boolean match = false, scanned = true;
            Scanner scanner = new Scanner(argv[++i]).useDelimiter("/");
  
            try {
              tempNum = scanner.nextInt();
              tempDenom = scanner.nextInt();
            } catch (Exception e) {}
  
            if (tempNum < 1 || tempDenom < 1)
              usage();
  
            TJScalingFactor[] scalingFactors = TJ.getScalingFactors();
            for (int j = 0; j < scalingFactors.length; j++) {
              if ((double)tempNum / (double)tempDenom ==
                  (double)scalingFactors[j].getNum() /
                  (double)scalingFactors[j].getDenom()) {
                scalingFactor = scalingFactors[j];
                match = true;  break;
              }
            }
            if (!match) usage();
          } else break;
        }
  
        if (i != argv.length - 2)
          usage();
  
        tjd = new TJDecompressor();
  
        if (stopOnWarning >= 0)
          tjd.set(TJ.PARAM_STOPONWARNING, stopOnWarning);
        if (fastUpsample >= 0)
          tjd.set(TJ.PARAM_FASTUPSAMPLE, fastUpsample);
        if (fastDCT >= 0)
          tjd.set(TJ.PARAM_FASTDCT, fastDCT);
        if (maxScans >= 0)
          tjd.set(TJ.PARAM_SCANLIMIT, maxScans);
        if (maxMemory >= 0)
          tjd.set(TJ.PARAM_MAXMEMORY, maxMemory);
  
        File jpegFile = new File(argv[i++]);
        fis = new FileInputStream(jpegFile);
        int jpegSize = fis.available();
        if (jpegSize < 1)
          throw new Exception("Input file contains no data");
        jpegBuf = new byte[jpegSize];
        fis.read(jpegBuf);
        fis.close();  fis = null;
  
        try {
          tjd.setSourceImage(jpegBuf, jpegSize);
        } catch (TJException e) { handleTJException(e, stopOnWarning); }
        subsamp = tjd.get(TJ.PARAM_SUBSAMP);
        width = tjd.get(TJ.PARAM_JPEGWIDTH);
        height = tjd.get(TJ.PARAM_JPEGHEIGHT);
        precision = tjd.get(TJ.PARAM_PRECISION);
        colorspace = tjd.get(TJ.PARAM_COLORSPACE);
  
        if (iccFilename != null) {
          try {
            iccBuf = tjd.getICCProfile();
          } catch (TJException e) { handleTJException(e, stopOnWarning); }
          if (iccBuf != null) {
            File iccFile = new File(iccFilename);
            fos = new FileOutputStream(iccFile);
            fos.write(iccBuf, 0, iccBuf.length);
          }
        }
  
        if (pixelFormat == TJ.PF_UNKNOWN) {
          if (colorspace == TJ.CS_GRAY)
            pixelFormat = TJ.PF_GRAY;
          else if (colorspace == TJ.CS_CMYK || colorspace == TJ.CS_YCCK)
            pixelFormat = TJ.PF_CMYK;
          else
            pixelFormat = TJ.PF_RGB;
        }
  
        if (tjd.get(TJ.PARAM_LOSSLESS) == 0) {
          tjd.setScalingFactor(scalingFactor);
          width = scalingFactor.getScaled(width);
          height = scalingFactor.getScaled(height);
  
          if (isCropped(croppingRegion)) {
            int adjustment;
  
            if (subsamp == TJ.SAMP_UNKNOWN)
              throw new Exception("Could not determine subsampling level of JPEG image");
            adjustment = croppingRegion.x %
                         scalingFactor.getScaled(TJ.getMCUWidth(subsamp));
            croppingRegion.x -= adjustment;
            croppingRegion.width += adjustment;
            tjd.setCroppingRegion(croppingRegion);
            width = croppingRegion.width;
            height = croppingRegion.height;
          }
        }
  
        if (precision <= 8)
          dstBuf = new byte[width * height * TJ.getPixelSize(pixelFormat)];
        else
          dstBuf = new short[width * height * TJ.getPixelSize(pixelFormat)];
  
        try {
          if (precision <= 8)
            tjd.decompress8((byte[])dstBuf, 0, 0, 0, pixelFormat);
          else if (precision <= 12)
            tjd.decompress12((short[])dstBuf, 0, 0, 0, pixelFormat);
          else
            tjd.decompress16((short[])dstBuf, 0, 0, 0, pixelFormat);
        } catch (TJException e) { handleTJException(e, stopOnWarning); }
  
        tjd.saveImage(argv[i], dstBuf, 0, 0, width, 0, height, pixelFormat);
      } catch (Exception e) {
        e.printStackTrace();
        exitStatus = -1;
      }
  
      try {
        if (tjd != null) tjd.close();
        if (fis != null) fis.close();
        if (fos != null) fos.close();
      } catch (Exception e) {}
      System.exit(exitStatus);
    }
  };
  

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