private void readPattern(BufferedInputStream in, Pattern p) throws IOException {
// Pattern header length
read(in, 4);
// Packing type (always 0)
in.read();
// Number of rows in pattern (1...256)
int rows = make16Bit(read(in, 2));
// Packed patterndata size
int size = make16Bit(read(in, 2));
int data[];
if (size == 0) {
data = new int[0];
} else {
byte[] b = read(in, size);
data = new int[size];
for (int i = 0; i < size; i++) {
data[i] = b[i];
}
}
p.setData(data);
p.setRows(rows);
}
private int updateData(Pattern pattern, int patternpos) {
int[] data = pattern.getData();
if (data.length == 0) return patternpos;
int check = data[patternpos++];
ud.reset();
if ((check & 0x80) != 0) {
// note
if ((check & 0x1) != 0) ud.setNote(data[patternpos++]);
// instrument
if ((check & 0x2) != 0) {
int tmp = data[patternpos++] - 1;
ud.setInstrument(mod.getModule().getInstrument(tmp));
}
// volume
if ((check & 0x4) != 0) ud.setVolume(data[patternpos++] & 0xff);
// effect
if ((check & 0x8) != 0) ud.setEffect(data[patternpos++]);
// effect param
if ((check & 0x10) != 0) ud.setEffectParameter(data[patternpos++] & 0xff);
} else {
ud.setNote(check);
ud.setInstrument(mod.getModule().getInstrument(data[patternpos++] - 1));
ud.setVolume(data[patternpos++] & 0xff);
ud.setEffect(data[patternpos++]);
ud.setEffectParameter(data[patternpos++] & 0xff);
}
return patternpos;
}
final int skip(Pattern pattern, int patternpos) {
int[] data = pattern.getData();
if (data.length == 0) return patternpos;
int check = data[patternpos++];
if ((check & 0x80) != 0) {
if ((check & 0x1) != 0) patternpos++;
if ((check & 0x2) != 0) patternpos++;
if ((check & 0x4) != 0) patternpos++;
if ((check & 0x8) != 0) patternpos++;
if ((check & 0x10) != 0) patternpos++;
} else {
patternpos += 4;
}
return patternpos;
}