bool CdmoLoader::load(const std::string &filename, const CFileProvider &fp)
{
int i,j;
binistream *f;
// check header
dmo_unpacker *unpacker = new dmo_unpacker;
unsigned char chkhdr[16];
if(!fp.extension(filename, ".dmo")) return false;
f = fp.open(filename); if(!f) return false;
f->readString((char *)chkhdr, 16);
if (!unpacker->decrypt(chkhdr, 16))
{
delete unpacker;
fp.close(f);
return false;
}
// get file size
long packed_length = fp.filesize(f);
f->seek(0);
unsigned char *packed_module = new unsigned char [packed_length];
// load file
f->readString((char *)packed_module, packed_length);
fp.close(f);
// decrypt
unpacker->decrypt(packed_module,packed_length);
long unpacked_length = 0x2000 * ARRAY_AS_WORD(packed_module, 12);
unsigned char *module = new unsigned char [unpacked_length];
// unpack
if (!unpacker->unpack(packed_module+12,module,unpacked_length))
{
delete unpacker;
delete [] packed_module;
delete [] module;
return false;
}
delete unpacker;
delete [] packed_module;
// "TwinTeam" - signed ?
if (memcmp(module,"TwinTeam Module File""\x0D\x0A",22))
{
delete module;
return false;
}
// load header
binisstream uf(module, unpacked_length);
uf.setFlag(binio::BigEndian, false); uf.setFlag(binio::FloatIEEE);
memset(&header,0,sizeof(s3mheader));
uf.ignore(22); // ignore DMO header ID string
uf.readString(header.name, 28);
uf.ignore(2); // _unk_1
header.ordnum = uf.readInt(2);
header.insnum = uf.readInt(2);
header.patnum = uf.readInt(2);
uf.ignore(2); // _unk_2
header.is = uf.readInt(2);
header.it = uf.readInt(2);
memset(header.chanset,0xFF,32);
for (i=0;i<9;i++)
header.chanset[i] = 0x10 + i;
uf.ignore(32); // ignore panning settings for all 32 channels
// load orders
for(i = 0; i < 256; i++) orders[i] = uf.readInt(1);
orders[header.ordnum] = 0xFF;
// load pattern lengths
unsigned short my_patlen[100];
for(i = 0; i < 100; i++) my_patlen[i] = uf.readInt(2);
// load instruments
for (i = 0; i < header.insnum; i++)
{
memset(&inst[i],0,sizeof(s3minst));
uf.readString(inst[i].name, 28);
inst[i].volume = uf.readInt(1);
inst[i].dsk = uf.readInt(1);
inst[i].c2spd = uf.readInt(4);
inst[i].type = uf.readInt(1);
inst[i].d00 = uf.readInt(1);
inst[i].d01 = uf.readInt(1);
inst[i].d02 = uf.readInt(1);
inst[i].d03 = uf.readInt(1);
inst[i].d04 = uf.readInt(1);
inst[i].d05 = uf.readInt(1);
inst[i].d06 = uf.readInt(1);
inst[i].d07 = uf.readInt(1);
inst[i].d08 = uf.readInt(1);
inst[i].d09 = uf.readInt(1);
inst[i].d0a = uf.readInt(1);
/*
* Originally, riven sets d0b = d0a and ignores 1 byte in the
* stream, but i guess this was a typo, so i read it here.
*/
inst[i].d0b = uf.readInt(1);
}
// load patterns
for (i = 0; i < header.patnum; i++) {
long cur_pos = uf.pos();
for (j = 0; j < 64; j++) {
while (1) {
unsigned char token = uf.readInt(1);
if (!token)
break;
unsigned char chan = token & 31;
// note + instrument ?
if (token & 32) {
unsigned char bufbyte = uf.readInt(1);
pattern[i][j][chan].note = bufbyte & 15;
pattern[i][j][chan].oct = bufbyte >> 4;
pattern[i][j][chan].instrument = uf.readInt(1);
}
// volume ?
if (token & 64)
pattern[i][j][chan].volume = uf.readInt(1);
// command ?
if (token & 128) {
pattern[i][j][chan].command = uf.readInt(1);
pattern[i][j][chan].info = uf.readInt(1);
}
}
}
uf.seek(cur_pos + my_patlen[i]);
}
bool DmoPlayer::load(const std::string& filename)
{
FileStream f(filename);
if(!f || f.extension() != ".dmo")
return false;
unsigned char chkhdr[16];
f.read(chkhdr, 16);
DMOUnpacker unpacker;
if(!unpacker.decrypt(chkhdr, 16))
{
return false;
}
f.seek(0);
std::vector<uint8_t> packed_module(f.size());
// load file
f.read(packed_module.data(), f.size());
// decrypt
unpacker.decrypt(packed_module.data(), packed_module.size());
const auto unpacked_length = 0x2000 * ARRAY_AS_WORD(packed_module.data(), 12);
std::vector<uint8_t> module(unpacked_length);
// unpack
if(!unpacker.unpack(packed_module.data() + 12, module.data(), unpacked_length))
{
return false;
}
// "TwinTeam" - signed ?
if(memcmp(module.data(), "TwinTeam Module File"
"\x0D\x0A",
22))
{
return false;
}
// load header
MemoryStream uf;
uf.write(module.data(), module.size());
uf.seek(0);
S3mHeader header;
uf.seekrel(22); // ignore DMO header ID string
uf.read(header.name, 28);
uf.seekrel(2); // _unk_1
uf >> header.orderCount >> header.instrumentCount >> header.patternCount;
uf.seekrel(2); // _unk_2
uf >> header.initialSpeed >> header.initialTempo;
header.chanset.fill(0xff);
for(int i = 0; i < 9; i++)
header.chanset[i] = 0x10 + i;
uf.seekrel(32); // ignore panning settings for all 32 channels
// load orders
for(int i = 0; i < header.orderCount; ++i)
{
uint8_t tmp;
uf >> tmp;
addOrder(tmp);
std::cerr << "ORD=" << int(tmp) << "\n";
}
addOrder(0xff);
uf.seekrel(256 - header.orderCount);
// load pattern lengths
uint16_t my_patlen[100];
uf.read(my_patlen, 100);
// load instruments
for(int i = 0; i < header.instrumentCount; i++)
{
S3mInstrument instrument;
uf.read(instrument.name, 28);
uf >> instrument.volume;
uf >> instrument.dsk;
uf >> instrument.c2spd;
uf >> instrument.type;
uf >> instrument.d00;
uf >> instrument.d01;
uf >> instrument.d02;
uf >> instrument.d03;
uf >> instrument.d04;
uf >> instrument.d05;
uf >> instrument.d06;
uf >> instrument.d07;
uf >> instrument.d08;
uf >> instrument.d09;
uf >> instrument.d0a;
/*
* Originally, riven sets d0b = d0a and ignores 1 byte in the
* stream, but i guess this was a typo, so i read it here.
*/
uf >> instrument.d0b;
setInstrument(i, instrument);
}
// load patterns
for(int pattern = 0; pattern < header.patternCount; pattern++)
{
const auto cur_pos = uf.pos();
for(int row = 0; row < 64; row++)
{
S3mCell* currentChannel = patternChannel(pattern, row);
while(true)
{
uint8_t token;
uf >> token;
if(!token)
break;
const auto chan = token & 31;
// note + instrument ?
if(token & 32)
{
uint8_t bufbyte;
uf >> bufbyte;
currentChannel[chan].note = bufbyte & 15;
currentChannel[chan].octave = bufbyte >> 4;
uf >> currentChannel[chan].instrument;
}
// volume ?
if(token & 64)
uf >> currentChannel[chan].volume;
// command ?
if(token & 128)
{
uf >> currentChannel[chan].effect;
uf >> currentChannel[chan].effectValue;
}
}
}
