public int decodeHorizontal(byte[] tmp, int i) {
do {
int j = i / 8;
int shift = (i % 8);
copyBits(bytesArray, tmp, j, shift);
if (whiteRun) node = WhiteTree.Find(Converter.bytesToInt(tmp));
else node = BlackTree.Find(Converter.bytesToInt(tmp));
if (node != null) code = node.code;
if (code.runLength >= 0) {
// DEBUG System.out.print( (whiteRun?"W":"B") + code.runLength
// );
if (code.runLength < 64) {
addRun(code.runLength + longHoriztonalRun);
whiteRun = !whiteRun;
longHoriztonalRun = 0;
} else longHoriztonalRun += code.runLength;
} else if (code.runLength == T4Code.EOF) {
lines--;
System.out.print("---" + code);
return T4Code.EOF; // reached the end of the image!
} else {
addRun(code.runLength);
System.out.print(code + "~~");
System.out.print((whiteRun ? "W" : "B") + code.runLength);
System.out.print("~~");
}
i += code.bitLength;
if (nPixels > 0 && code.runLength == T4Code.EOL) // end of the
// line
{
whiteRun = true; // always start with white
lines++;
resetRuns();
}
} while (code.runLength >= 64);
return i;
}
public int readMode(int i) {
int j = i / 8;
int shift = (i % 8);
// DEBUG System.out.println("Loop start i="+i);
copyBits(bytesArray, tmp, j, shift);
node = ModeTree.Find(Converter.bytesToInt(tmp));
if (node != null) code = node.code;
i += code.bitLength;
return i;
}
void init() {
// setup trees
WhiteTree = new T4Node();
BlackTree = new T4Node();
ModeTree = new T4Node();
if (hiloBitOrder) {
for (i = 0; i < ModeCodes.length; i++) {
code = new T4Code(ModeCodes[i]);
if (code.bitLength <= 8) {
int lo = Converter.reverseByte(Converter.getLoByte(code.codeWord)); // & 0xff);
code.codeWord = (lo >>> (8 - code.bitLength));
} else {
code.codeWord = (Converter.reverseInt(code.codeWord) >>> (16 - code.bitLength));
}
ModeTree.ReversedAdd(0, code);
}
for (i = 0; i < T4Tables.WhiteCodes.length; i++) {
code = new T4Code(T4Tables.WhiteCodes[i]);
if (code.bitLength <= 8) {
int lo = Converter.reverseByte(Converter.getLoByte(code.codeWord)); // & 0xff);
code.codeWord = (lo >>> (8 - code.bitLength));
} else {
code.codeWord = (Converter.reverseInt(code.codeWord) >>> (16 - code.bitLength));
}
WhiteTree.ReversedAdd(0, code);
}
for (i = 0; i < T4Tables.BlackCodes.length; i++) {
code = new T4Code(T4Tables.BlackCodes[i]);
if (code.bitLength <= 8) {
int lo = Converter.reverseByte(Converter.getLoByte(code.codeWord)); // & 0xff);
code.codeWord = (lo >>> (8 - code.bitLength));
} else {
code.codeWord = (Converter.reverseInt(code.codeWord) >>> (16 - code.bitLength));
}
BlackTree.ReversedAdd(0, code);
}
} else {
for (i = 0; i < ModeCodes.length; i++) {
code = new T4Code(ModeCodes[i]);
ModeTree.Add(0, code);
}
for (i = 0; i < T4Tables.WhiteCodes.length; i++) {
code = new T4Code(T4Tables.WhiteCodes[i]);
WhiteTree.Add(0, code);
}
for (i = 0; i < T4Tables.BlackCodes.length; i++) {
code = new T4Code(T4Tables.BlackCodes[i]);
BlackTree.Add(0, code);
}
}
// setup runs
WhiteRun = new byte[imageWidth + 2];
BlackRun = new byte[imageWidth + 2];
for (i = 0; i < imageWidth + 1; i++) {
WhiteRun[i] = (byte) 0xff;
BlackRun[i] = 0;
}
}
