예제 #1
0
 private static void decompTest(
     TJDecompressor tjd,
     byte[] jpegBuf,
     int jpegSize,
     int w,
     int h,
     int pf,
     String baseName,
     int subsamp,
     int flags)
     throws Exception {
   int i;
   if ((subsamp == TJ.SAMP_444 || subsamp == TJ.SAMP_GRAY) && yuv == 0) {
     TJScalingFactor sf[] = TJ.getScalingFactors();
     for (i = 0; i < sf.length; i++)
       decompTest(tjd, jpegBuf, jpegSize, w, h, pf, baseName, subsamp, flags, sf[i]);
   } else
     decompTest(
         tjd, jpegBuf, jpegSize, w, h, pf, baseName, subsamp, flags, new TJScalingFactor(1, 1));
   System.out.print("\n");
 }
예제 #2
0
  public static void main(String[] argv) {

    BufferedImage img = null;
    byte[] bmpBuf = null;
    TJTransform xform = new TJTransform();
    int flags = 0;

    try {

      sf = TJ.getScalingFactors();

      if (argv.length < 2) {
        usage();
      }

      TJScalingFactor scaleFactor = new TJScalingFactor(1, 1);
      String inFormat = "jpg", outFormat = "jpg";
      int outSubsamp = -1, outQual = 95;
      boolean display = false;

      if (argv.length > 1) {
        for (int i = 1; i < argv.length; i++) {
          if (argv[i].length() < 2) continue;
          if (argv[i].length() > 2 && argv[i].substring(0, 3).equalsIgnoreCase("-sc")) {
            int match = 0;
            if (i < argv.length - 1) {
              String[] scaleArg = argv[++i].split("/");
              if (scaleArg.length == 2) {
                TJScalingFactor tempsf =
                    new TJScalingFactor(
                        Integer.parseInt(scaleArg[0]), Integer.parseInt(scaleArg[1]));
                for (int j = 0; j < sf.length; j++) {
                  if (tempsf.equals(sf[j])) {
                    scaleFactor = sf[j];
                    match = 1;
                    break;
                  }
                }
              }
            }
            if (match != 1) usage();
          }
          if (argv[i].equalsIgnoreCase("-h") || argv[i].equalsIgnoreCase("-?")) usage();
          if (argv[i].length() > 2 && argv[i].substring(0, 3).equalsIgnoreCase("-sa")) {
            if (i < argv.length - 1) {
              i++;
              if (argv[i].substring(0, 1).equalsIgnoreCase("g")) outSubsamp = TJ.SAMP_GRAY;
              else if (argv[i].equals("444")) outSubsamp = TJ.SAMP_444;
              else if (argv[i].equals("422")) outSubsamp = TJ.SAMP_422;
              else if (argv[i].equals("420")) outSubsamp = TJ.SAMP_420;
              else usage();
            } else usage();
          }
          if (argv[i].substring(0, 2).equalsIgnoreCase("-q")) {
            if (i < argv.length - 1) {
              int qual = Integer.parseInt(argv[++i]);
              if (qual >= 1 && qual <= 100) outQual = qual;
              else usage();
            } else usage();
          }
          if (argv[i].substring(0, 2).equalsIgnoreCase("-g")) xform.options |= TJTransform.OPT_GRAY;
          if (argv[i].equalsIgnoreCase("-hflip")) xform.op = TJTransform.OP_HFLIP;
          if (argv[i].equalsIgnoreCase("-vflip")) xform.op = TJTransform.OP_VFLIP;
          if (argv[i].equalsIgnoreCase("-transpose")) xform.op = TJTransform.OP_TRANSPOSE;
          if (argv[i].equalsIgnoreCase("-transverse")) xform.op = TJTransform.OP_TRANSVERSE;
          if (argv[i].equalsIgnoreCase("-rot90")) xform.op = TJTransform.OP_ROT90;
          if (argv[i].equalsIgnoreCase("-rot180")) xform.op = TJTransform.OP_ROT180;
          if (argv[i].equalsIgnoreCase("-rot270")) xform.op = TJTransform.OP_ROT270;
          if (argv[i].equalsIgnoreCase("-custom")) xform.cf = new TJExample();
          else if (argv[i].length() > 2 && argv[i].substring(0, 2).equalsIgnoreCase("-c")) {
            if (i >= argv.length - 1) usage();
            String[] cropArg = argv[++i].split(",");
            if (cropArg.length != 3) usage();
            String[] dimArg = cropArg[2].split("[xX]");
            if (dimArg.length != 2) usage();
            int tempx = Integer.parseInt(cropArg[0]);
            int tempy = Integer.parseInt(cropArg[1]);
            int tempw = Integer.parseInt(dimArg[0]);
            int temph = Integer.parseInt(dimArg[1]);
            if (tempx < 0 || tempy < 0 || tempw < 0 || temph < 0) usage();
            xform.x = tempx;
            xform.y = tempy;
            xform.width = tempw;
            xform.height = temph;
            xform.options |= TJTransform.OPT_CROP;
          }
          if (argv[i].substring(0, 2).equalsIgnoreCase("-d")) display = true;
          if (argv[i].equalsIgnoreCase("-fastupsample")) {
            System.out.println("Using fast upsampling code");
            flags |= TJ.FLAG_FASTUPSAMPLE;
          }
          if (argv[i].equalsIgnoreCase("-fastdct")) {
            System.out.println("Using fastest DCT/IDCT algorithm");
            flags |= TJ.FLAG_FASTDCT;
          }
          if (argv[i].equalsIgnoreCase("-accuratedct")) {
            System.out.println("Using most accurate DCT/IDCT algorithm");
            flags |= TJ.FLAG_ACCURATEDCT;
          }
        }
      }
      String[] inFileTokens = argv[0].split("\\.");
      if (inFileTokens.length > 1) inFormat = inFileTokens[inFileTokens.length - 1];
      String[] outFileTokens;
      if (display) outFormat = "bmp";
      else {
        outFileTokens = argv[1].split("\\.");
        if (outFileTokens.length > 1) outFormat = outFileTokens[outFileTokens.length - 1];
      }

      File file = new File(argv[0]);
      int width, height;

      if (inFormat.equalsIgnoreCase("jpg")) {
        FileInputStream fis = new FileInputStream(file);
        int inputSize = fis.available();
        if (inputSize < 1) {
          System.out.println("Input file contains no data");
          System.exit(1);
        }
        byte[] inputBuf = new byte[inputSize];
        fis.read(inputBuf);
        fis.close();

        TJDecompressor tjd;
        if (xform.op != TJTransform.OP_NONE || xform.options != 0 || xform.cf != null) {
          TJTransformer tjt = new TJTransformer(inputBuf);
          TJTransform[] t = new TJTransform[1];
          t[0] = xform;
          t[0].options |= TJTransform.OPT_TRIM;
          TJDecompressor[] tjdx = tjt.transform(t, 0);
          tjd = tjdx[0];
        } else tjd = new TJDecompressor(inputBuf);

        width = tjd.getWidth();
        height = tjd.getHeight();
        int inSubsamp = tjd.getSubsamp();
        System.out.println(
            "Source Image: "
                + width
                + " x "
                + height
                + " pixels, "
                + sampName[inSubsamp]
                + " subsampling");
        if (outSubsamp < 0) outSubsamp = inSubsamp;

        if (outFormat.equalsIgnoreCase("jpg")
            && (xform.op != TJTransform.OP_NONE || xform.options != 0)
            && scaleFactor.isOne()) {
          file = new File(argv[1]);
          FileOutputStream fos = new FileOutputStream(file);
          fos.write(tjd.getJPEGBuf(), 0, tjd.getJPEGSize());
          fos.close();
          System.exit(0);
        }

        width = scaleFactor.getScaled(width);
        height = scaleFactor.getScaled(height);

        if (!outFormat.equalsIgnoreCase("jpg"))
          img = tjd.decompress(width, height, BufferedImage.TYPE_INT_RGB, flags);
        else bmpBuf = tjd.decompress(width, 0, height, TJ.PF_BGRX, flags);
        tjd.close();
      } else {
        img = ImageIO.read(file);
        if (img == null) throw new Exception("Input image type not supported.");
        width = img.getWidth();
        height = img.getHeight();
        if (outSubsamp < 0) {
          if (img.getType() == BufferedImage.TYPE_BYTE_GRAY) outSubsamp = TJ.SAMP_GRAY;
          else outSubsamp = TJ.SAMP_444;
        }
      }
      System.gc();
      if (!display)
        System.out.print("Dest. Image (" + outFormat + "):  " + width + " x " + height + " pixels");

      if (display) {
        ImageIcon icon = new ImageIcon(img);
        JLabel label = new JLabel(icon, JLabel.CENTER);
        JOptionPane.showMessageDialog(null, label, "Output Image", JOptionPane.PLAIN_MESSAGE);
      } else if (outFormat.equalsIgnoreCase("jpg")) {
        System.out.println(", " + sampName[outSubsamp] + " subsampling, quality = " + outQual);
        TJCompressor tjc = new TJCompressor();
        int jpegSize;
        byte[] jpegBuf;

        tjc.setSubsamp(outSubsamp);
        tjc.setJPEGQuality(outQual);
        if (img != null) tjc.setSourceImage(img, 0, 0, 0, 0);
        else {
          tjc.setSourceImage(bmpBuf, 0, 0, width, 0, height, TJ.PF_BGRX);
        }
        jpegBuf = tjc.compress(flags);
        jpegSize = tjc.getCompressedSize();
        tjc.close();

        file = new File(argv[1]);
        FileOutputStream fos = new FileOutputStream(file);
        fos.write(jpegBuf, 0, jpegSize);
        fos.close();
      } else {
        System.out.print("\n");
        file = new File(argv[1]);
        ImageIO.write(img, outFormat, file);
      }

    } catch (Exception e) {
      e.printStackTrace();
      System.exit(-1);
    }
  }