static void decompTest()

in java/TJUnitTest.java [741:820]
74 lines of code
22 McCabe index (conditional complexity)

  static void decompTest(TJDecompressor tjd, byte[] jpegBuf, int jpegSize,
                         int w, int h, int pf, String baseName, int subsamp,
                         TJScalingFactor sf) throws Exception {
    String pfStr, pfStrLong, tempStr;
    boolean bottomUp = (tjd.get(TJ.PARAM_BOTTOMUP) == 1);
    String buStrLong = bottomUp ? "Bottom-Up" : "Top-Down ";
    int scaledWidth = sf.getScaled(w);
    int scaledHeight = sf.getScaled(h);
    int temp1, temp2, imgType = pf;
    BufferedImage img = null;
    Object dstBuf = null;

    if (bi) {
      pf = biTypePF(imgType);
      pfStr = biTypeStr(imgType);
      pfStrLong = pfStr + " (" + PIXFORMATSTR[pf] + ")";
    } else {
      pfStr = PIXFORMATSTR[pf];
      pfStrLong = pfStr;
    }

    tjd.setSourceImage(jpegBuf, jpegSize);
    tjd.setScalingFactor(sf);
    if (lossless && subsamp != TJ.SAMP_444 && subsamp != TJ.SAMP_GRAY)
      subsamp = TJ.SAMP_444;
    if (tjd.getWidth() != w || tjd.getHeight() != h ||
        tjd.get(TJ.PARAM_SUBSAMP) != subsamp)
      throw new Exception("Incorrect JPEG header");

    if (doYUV) {
      System.out.format("JPEG -> YUV %s ", SUBNAME_LONG[subsamp]);
      if (!sf.isOne())
        System.out.format("%d/%d ... ", sf.getNum(), sf.getDenom());
      else System.out.print("... ");
      YUVImage yuvImage = tjd.decompressToYUV(yuvAlign);
      if (checkBufYUV(yuvImage.getBuf(), yuvImage.getSize(), scaledWidth,
                      scaledHeight, subsamp, sf) == 1)
        System.out.print("Passed.\n");
      else {
        System.out.print("FAILED!\n");  exitStatus = -1;
      }

      System.out.format("YUV %s -> %s %s ... ", SUBNAME_LONG[subsamp],
                        pfStrLong, buStrLong);
      tjd.setSourceImage(yuvImage);
    } else {
      System.out.format("JPEG -> %s %s ", pfStrLong, buStrLong);
      if (!sf.isOne())
        System.out.format("%d/%d ... ", sf.getNum(), sf.getDenom());
      else System.out.print("... ");
    }
    if (bi)
      img = tjd.decompress8(imgType);
    else {
      if (precision == 8)
        dstBuf = tjd.decompress8(0, pf);
      else if (precision == 12)
        dstBuf = tjd.decompress12(0, pf);
      else
        dstBuf = tjd.decompress16(0, pf);
    }

    if (bi) {
      tempStr = baseName + "_dec_" + pfStr + "_" + (bottomUp ? "BU" : "TD") +
                "_" + SUBNAME[subsamp] + "_" +
                (double)sf.getNum() / (double)sf.getDenom() + "x" + ".png";
      File file = new File(tempStr);
      ImageIO.write(img, "png", file);
    }

    if ((bi && checkImg(img, pf, subsamp, sf, bottomUp) == 1) ||
        (!bi && checkBuf(dstBuf, scaledWidth,
                         scaledWidth * TJ.getPixelSize(pf), scaledHeight, pf,
                         subsamp, sf, bottomUp) == 1))
      System.out.print("Passed.\n");
    else {
      System.out.print("FAILED!\n");
      exitStatus = -1;
    }
  }