std::unique_ptr<Music> MusicType_IBK::read(stream::input& content,
SuppData& suppData) const
{
auto music = std::make_unique<Music>();
music->patches.reset(new PatchBank());
uint8_t names[IBK_INST_COUNT * IBK_NAME_LEN];
content.seekg(4 + IBK_INST_COUNT * IBK_INST_LEN, stream::start);
content.read(names, IBK_INST_COUNT * IBK_NAME_LEN);
// Read the instruments
music->patches->reserve(IBK_INST_COUNT);
content.seekg(4, stream::start);
for (unsigned int i = 0; i < IBK_INST_COUNT; i++) {
auto patch = std::make_shared<OPLPatch>();
uint8_t inst[IBK_INST_LEN];
content.read((char *)inst, IBK_INST_LEN);
OPLOperator *o = &patch->m;
for (int op = 0; op < 2; op++) {
o->enableTremolo = (inst[0 + op] >> 7) & 1;
o->enableVibrato = (inst[0 + op] >> 6) & 1;
o->enableSustain = (inst[0 + op] >> 5) & 1;
o->enableKSR = (inst[0 + op] >> 4) & 1;
o->freqMult = inst[0 + op] & 0x0F;
o->scaleLevel = inst[2 + op] >> 6;
o->outputLevel = inst[2 + op] & 0x3F;
o->attackRate = inst[4 + op] >> 4;
o->decayRate = inst[4 + op] & 0x0F;
o->sustainRate = inst[6 + op] >> 4;
o->releaseRate = inst[6 + op] & 0x0F;
o->waveSelect = inst[8 + op] & 0x07;
o = &patch->c;
}
patch->feedback = (inst[10] >> 1) & 0x07;
patch->connection = inst[10] & 1;
patch->rhythm = OPLPatch::Rhythm::Melodic;
uint8_t *name = &names[i * IBK_NAME_LEN];
unsigned int namelen = 9;
for (int l = 0; l < 9; l++) {
if (name[l] == 0) {
namelen = l;
break;
}
}
patch->name = std::string((char *)name, namelen);
music->patches->push_back(patch);
}
return music;
}
MusicType::Certainty MusicType_IBK::isInstance(stream::input& content) const
{
// Make sure the signature matches
// TESTED BY: mus_ibk_isinstance_c01
char sig[4];
content.seekg(0, stream::start);
content.read(sig, 4);
if (strncmp(sig, "IBK\x1A", 4) != 0) return Certainty::DefinitelyNo;
// All files are the same size
// TESTED BY: mus_ibk_isinstance_c02
if (content.size() != IBK_LENGTH) return Certainty::DefinitelyNo;
// TESTED BY: mus_ibk_isinstance_c00
return Certainty::DefinitelyYes;
}