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");
}
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);
}
}