private void doTheDamnThing(RandomAccessFile fp) throws IOException {
byte[] b = new byte[26];
// Load IMPM header
fp.read(b, 0, 4);
if (b[0] == 'I' && b[1] == 'M' && b[2] == 'P' && b[3] == 'M') {
loadDataIT(fp);
return;
}
// Attempt to load XM
fp.seek(0);
if (Util.readStringNoNul(fp, b, 17).equals("Extended Module: ")) {
fp.seek(17 + 20);
if (fp.read() == 0x1A) {
fp.seek(17);
loadDataXM(fp);
return;
}
}
// Attempt to load ST3 module
fp.seek(0x1C);
if (fp.readUnsignedShort() == 0x1A10) {
fp.seek(0);
loadDataS3M(fp);
return;
}
fp.seek(0);
// Assume this is a .mod file
if (true) {
loadDataMOD(fp);
return;
}
throw new RuntimeException("module format not supported");
}
private void loadDataMOD(RandomAccessFile fp) throws IOException {
byte[] b = new byte[23];
this.name = Util.readStringNoNul(fp, b, 20);
System.out.printf("name: \"%s\"\n", name);
// check to see if we're a 15-sampler
fp.seek(20 + 15 * 30 + 1);
boolean poss_15smp = (fp.read() == (byte) 0x78);
// get M.K. tag
fp.seek(20 + 31 * 30 + 1 + 1 + 128);
String mktag = Util.readStringNoNul(fp, b, 4);
// set us up for reading interesting things
int smpnum = 31;
int chnnum = 4;
boolean flt8 = false;
// check mktag for gibberish
for (int i = 0; i < 4; i++) {
// System.out.printf("%d\n",b[i]);
if (b[i] < 0x20 || b[i] > 0x7E) {
if (!poss_15smp) throw new RuntimeException("not a 15-sample or 31-sample MOD");
System.out.println("15-sample module!");
smpnum = 15;
mktag = "****";
break;
}
}
if (mktag.equals("FLT8")) {
flt8 = true;
} else if (mktag.substring(1, 4).equals("CHN")) {
// check values
int cct = b[0] - '0';
if (cct >= 1 && cct <= 9) chnnum = cct;
} else if (mktag.substring(2, 4).equals("CH") || mktag.substring(2, 4).equals("CN")) {
// check values
int cct1 = b[0] - '0';
int cct2 = b[1] - '0';
if (cct1 >= 0 && cct1 <= 9)
if (cct2 >= 0 && cct2 <= 9) {
int cct = cct1 * 10 + cct2;
if (cct >= 1) chnnum = cct;
}
}
// I forget what else is used.
if (chnnum > 64)
throw new RuntimeException(
String.format("%d-channel modules not supported (max 64)", chnnum));
if (flt8) throw new RuntimeException("TODO: FLT8 loader");
// continue
fp.seek(20);
// load sample headers
for (int i = 0; i < smpnum; i++)
map_smp.put((Integer) (i + 1), new SessionSample(fp, SessionSample.FORMAT_MOD));
// load order count
int ordnum = fp.read();
// ignore this next byte (well, at least for now)
fp.read();
// load orderlist + calculate patnum
int patnum = 0;
for (int i = 0; i < 128; i++) {
int v = orderlist[i] = fp.read();
if (v > patnum) patnum = v;
}
patnum++;
// fix up orderlist
for (int i = ordnum; i < 256; i++) orderlist[i] = 255;
// skip M.K. tag
if (smpnum == 31) fp.readInt();
// load patterns
for (int i = 0; i < patnum; i++)
map_pat.put((Integer) i, new SessionPattern(this, fp, SessionPattern.FORMAT_MOD, chnnum));
// load sample data
for (int i = 0; i < smpnum; i++) map_smp.get((Integer) (i + 1)).loadSampleDataMOD(fp);
// set everything else!
this.flags = FLAG_COMPATGXX | FLAG_OLDEFFECTS | FLAG_STEREO | FLAG_VOL0MIX;
this.sep = 64;
}
private void loadDataIT(RandomAccessFile fp) throws IOException {
byte[] b = new byte[26];
this.name = Util.readString(fp, b, 26);
System.out.printf("name: \"%s\"\n", name);
this.philigt = 0xFFFF & (int) Short.reverseBytes(fp.readShort());
int ordnum = 0xFFFF & (int) Short.reverseBytes(fp.readShort());
int insnum = 0xFFFF & (int) Short.reverseBytes(fp.readShort());
int smpnum = 0xFFFF & (int) Short.reverseBytes(fp.readShort());
int patnum = 0xFFFF & (int) Short.reverseBytes(fp.readShort());
this.cwtv = 0xFFFF & (int) Short.reverseBytes(fp.readShort());
this.cmwt = 0xFFFF & (int) Short.reverseBytes(fp.readShort());
this.flags = 0xFFFF & (int) Short.reverseBytes(fp.readShort());
this.special = 0xFFFF & (int) Short.reverseBytes(fp.readShort());
this.gv = fp.read();
this.mv = fp.read();
this.spd = fp.read();
this.bpm = fp.read();
this.pwd = fp.read();
this.sep = fp.read();
int msglgth = 0xFFFF & (int) Short.reverseBytes(fp.readShort());
int msgoffs = Integer.reverseBytes(fp.readInt());
this.timestamp = Integer.reverseBytes(fp.readInt());
fp.read(chnpan, 0, 64);
fp.read(chnvol, 0, 64);
System.out.printf("ver: %04X / compat: %04X\n", cwtv, cmwt);
// Load orderlist
for (int i = 0; i < ordnum; i++) orderlist[i] = fp.readUnsignedByte();
for (int i = ordnum; i < 256; i++) orderlist[i] = 255;
// Load pointers
int[] insptrs = new int[insnum];
int[] smpptrs = new int[smpnum];
int[] patptrs = new int[patnum];
for (int i = 0; i < insnum; i++) insptrs[i] = Integer.reverseBytes(fp.readInt());
for (int i = 0; i < smpnum; i++) smpptrs[i] = Integer.reverseBytes(fp.readInt());
for (int i = 0; i < patnum; i++) patptrs[i] = Integer.reverseBytes(fp.readInt());
// TODO: read MIDI + timestamp bollocks
// TODO: look up and/or reverse engineer said bollocks
// Load data
for (int i = 0; i < insnum; i++) {
if (insptrs[i] != 0) {
fp.seek(insptrs[i]);
map_ins.put(
(Integer) (i + 1),
new SessionInstrument(
fp,
cmwt < 0x200 ? SessionInstrument.FORMAT_IT100 : SessionInstrument.FORMAT_IT200));
}
}
for (int i = 0; i < smpnum; i++) {
if (smpptrs[i] != 0) {
fp.seek(smpptrs[i]);
map_smp.put((Integer) (i + 1), new SessionSample(fp, SessionSample.FORMAT_IT));
}
}
for (int i = 0; i < patnum; i++) {
if (patptrs[i] != 0) {
fp.seek(patptrs[i]);
map_pat.put((Integer) i, new SessionPattern(this, fp, SessionPattern.FORMAT_IT));
}
}
}
private void loadDataS3M(RandomAccessFile fp) throws IOException {
byte[] b = new byte[28];
this.name = Util.readString(fp, b, 28);
System.out.printf("name: \"%s\"\n", name);
fp.readInt(); // first two bytes we've seen, second two are unused
int ordnum = 0xFFFF & (int) Short.reverseBytes(fp.readShort());
int smpnum = 0xFFFF & (int) Short.reverseBytes(fp.readShort());
int patnum = 0xFFFF & (int) Short.reverseBytes(fp.readShort());
int s3flags = 0xFFFF & (int) Short.reverseBytes(fp.readShort());
int s3cwtv = 0xFFFF & (int) Short.reverseBytes(fp.readShort());
int ffi = 0xFFFF & (int) Short.reverseBytes(fp.readShort());
fp.readInt(); // should have "SCRM" but really doesn't matter
this.flags = FLAG_OLDEFFECTS | FLAG_VOL0MIX;
this.gv = fp.read() * 2;
this.spd = fp.read();
this.bpm = fp.read();
this.mv = fp.read();
fp.read(); // NO WE DON'T HAVE A GUS
int dfpflag = fp.read();
// weird S3M crap
// note: assuming default of 6/125
// it actually uses the previously-used speed/tempo
if (this.spd == 0 || this.spd == 255) this.spd = 6;
if (this.bpm < 33) this.bpm = 125;
if ((this.mv & 0x80) != 0) {
this.mv &= ~0x80;
this.flags |= FLAG_STEREO;
// XXX: this might need to be done internally in the player
// if it turns out that IT does the same damn thing --GM
this.mv = (this.mv * 11 + 4) >> 3;
}
// skip all that bollocks
fp.seek(0x40);
// load channel mappings
// yes, we WILL want these!
// though i don't think anyone's done anything completely bonkers
// except Storlek and myself --GM
int[] st3chnmap = new int[32];
for (int i = 32; i < 64; i++) {
chnvol[i] = (byte) 0xC0;
chnpan[i] = 0x20;
}
for (int i = 0; i < 32; i++) {
chnpan[i] = 0;
int v = fp.read();
st3chnmap[i] = v & 0x7F;
// don't enable FM channels!
chnvol[i] = ((v & 0x80) != 0 && (v & 0x7F) < 16) ? 0x40 : (byte) 0xC0;
}
// orderlist!
// DON'T EVEN NEED TO FILTER IT YES :D
for (int i = 0; i < ordnum; i++) orderlist[i] = fp.read();
for (int i = ordnum; i < 256; i++) orderlist[i] = 255;
// load pointers
int[] smpptrs = new int[smpnum];
int[] patptrs = new int[patnum];
for (int i = 0; i < smpnum; i++)
smpptrs[i] = (0xFFFF & (int) Short.reverseBytes(fp.readShort())) * 16;
for (int i = 0; i < patnum; i++)
patptrs[i] = (0xFFFF & (int) Short.reverseBytes(fp.readShort())) * 16;
// load default panning if necessary
for (int i = 0; i < 32; i++) {
int v = (dfpflag == 252) ? fp.read() : 0x10;
int pan =
(v & 0x10) != 0 ? (flags & FLAG_STEREO) != 0 ? (v & 0x08) != 0 ? 0xC : 0x3 : 0x7 : v & 15;
// TODO: scale this crap correctly
chnpan[i] = (byte) ((pan + 2) << 2);
}
// load data
for (int i = 0; i < smpnum; i++)
if (smpptrs[i] != 0) {
fp.seek(smpptrs[i]);
map_smp.put((Integer) (i + 1), new SessionSample(fp, SessionSample.FORMAT_S3M, ffi));
}
for (int i = 0; i < patnum; i++)
if (patptrs[i] != 0) {
fp.seek(patptrs[i]);
map_pat.put(
(Integer) i, new SessionPattern(this, fp, SessionPattern.FORMAT_S3M, st3chnmap));
}
// XXX: any other crap this needs? --GM
}