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This commit is contained in:
tildearrow 2022-07-25 19:45:49 -05:00
parent 3ff8f3d860
commit 8d17500315
1 changed files with 157 additions and 7 deletions
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162
src/engine/fileOps.cpp
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@ -2268,9 +2268,12 @@ bool DivEngine::loadFC(unsigned char* file, size_t len) {
SafeReader reader=SafeReader(file,len);
warnings="";
bool isFC14=false;
unsigned int patPtr, freqMacroPtr, volMacroPtr, samplePtr;
unsigned int patPtr, freqMacroPtr, volMacroPtr, samplePtr, wavePtr;
unsigned int seqLen, patLen, freqMacroLen, volMacroLen, sampleLen;
unsigned char waveLen[40];
unsigned char waveLoopLen[40];
struct FCSequence {
unsigned char pat[4];
signed char transpose[4];
@ -2283,6 +2286,11 @@ bool DivEngine::loadFC(unsigned char* file, size_t len) {
unsigned char val[32];
};
std::vector<FCPattern> pat;
struct FCMacro {
unsigned char val[64];
};
std::vector<FCMacro> freqMacros;
std::vector<FCMacro> volMacros;
struct FCSample {
unsigned short loopLen, len, loopStart;
@ -2335,14 +2343,23 @@ bool DivEngine::loadFC(unsigned char* file, size_t len) {
}
freqMacroPtr=reader.readI_BE();
freqMacroLen=reader.readI_BE();
if (freqMacroLen%64) {
logW("freq sequence length is not multiple of 64 (%d)",freqMacroLen);
//throw EndOfFileException(&reader,reader.tell());
}
volMacroPtr=reader.readI_BE();
volMacroLen=reader.readI_BE();
if (volMacroLen%64) {
logW("vol sequence length is not multiple of 64 (%d)",volMacroLen);
//throw EndOfFileException(&reader,reader.tell());
}
samplePtr=reader.readI_BE();
if (isFC14) {
reader.readI_BE(); // wave len
wavePtr=reader.readI_BE(); // wave len
sampleLen=0;
} else {
sampleLen=reader.readI_BE();
wavePtr=0;
}
logD("patPtr: %d",patPtr);
@ -2352,7 +2369,11 @@ bool DivEngine::loadFC(unsigned char* file, size_t len) {
logD("volMacroPtr: %d",volMacroPtr);
logD("volMacroLen: %d",volMacroLen);
logD("samplePtr: %d",samplePtr);
if (isFC14) {
logD("wavePtr: %d",wavePtr);
} else {
logD("sampleLen: %d",sampleLen);
}
// sample info
logD("samples:");
@ -2365,9 +2386,14 @@ bool DivEngine::loadFC(unsigned char* file, size_t len) {
}
// wavetable lengths
if (isFC14) for (int i=0; i<20; i++) {
reader.readS_BE();
reader.readS_BE();
if (isFC14) {
logD("wavetables:");
for (int i=0; i<40; i++) {
waveLen[i]=reader.readC();
waveLoopLen[i]=reader.readC();
logD("- %d: %.4x (%.4x)",i,waveLen[i],waveLoopLen[i]);
}
}
// sequences
@ -2413,7 +2439,96 @@ bool DivEngine::loadFC(unsigned char* file, size_t len) {
pat.push_back(p);
}
// TODO: read the rest
// freq sequences
if (!reader.seek(freqMacroPtr,SEEK_SET)) {
logE("premature end of file!");
lastError="incomplete file";
delete[] file;
return false;
}
freqMacroLen/=64;
logD("reading freq sequences... (%d)",freqMacroLen);
for (unsigned int i=0; i<freqMacroLen; i++) {
FCMacro m;
reader.read(m.val,64);
freqMacros.push_back(m);
}
// vol sequences
if (!reader.seek(volMacroPtr,SEEK_SET)) {
logE("premature end of file!");
lastError="incomplete file";
delete[] file;
return false;
}
volMacroLen/=64;
logD("reading volume sequences... (%d)",volMacroLen);
for (unsigned int i=0; i<volMacroLen; i++) {
FCMacro m;
reader.read(m.val,64);
volMacros.push_back(m);
}
// samples
if (!reader.seek(samplePtr,SEEK_SET)) {
logE("premature end of file!");
lastError="incomplete file";
delete[] file;
return false;
}
logD("reading samples...");
for (int i=0; i<10; i++) {
DivSample* s=new DivSample;
s->depth=DIV_SAMPLE_DEPTH_8BIT;
if (sample[i].len>0) {
s->init(sample[i].len);
}
s->loopStart=sample[i].loopStart*2;
s->loopEnd=(sample[i].loopStart+sample[i].loopLen)*2;
reader.read(s->data8,sample[i].len);
ds.sample.push_back(s);
}
ds.sampleLen=(int)ds.sample.size();
// wavetables
if (isFC14) {
if (!reader.seek(wavePtr,SEEK_SET)) {
logE("premature end of file!");
lastError="incomplete file";
delete[] file;
return false;
}
logD("reading wavetables...");
for (int i=0; i<40; i++) {
DivWavetable* w=new DivWavetable;
w->min=0;
w->max=255;
w->len=MIN(256,waveLoopLen[i]*2);
for (int i=0; i<256; i++) {
w->data[i]=128;
}
if (waveLen[i]>0) {
signed char* waveArray=new signed char[waveLen[i]*2];
reader.read(waveArray,waveLen[i]*2);
int howMany=MIN(waveLen[i]*2,waveLoopLen[i]*2);
if (howMany>256) howMany=256;
for (int i=0; i<howMany; i++) {
w->data[i]=waveArray[i];
}
delete[] waveArray;
} else {
w->len=32;
for (int i=0; i<32; i++) {
w->data[i]=(i*255)/31;
}
}
ds.wave.push_back(w);
}
}
ds.waveLen=(int)ds.wave.size();
// convert
ds.subsong[0]->ordersLen=seqLen;
@ -2492,6 +2607,41 @@ bool DivEngine::loadFC(unsigned char* file, size_t len) {
}
}
// convert instruments
for (unsigned int i=0; i<volMacroLen; i++) {
DivInstrument* ins=new DivInstrument;
FCMacro& m=volMacros[i];
ins->type=DIV_INS_AMIGA;
ins->name=fmt::sprintf("Instrument %d",i);
unsigned char seqSpeed=m.val[0];
unsigned char freqMacro=m.val[1];
unsigned char vibSpeed=m.val[2];
unsigned char vibDepth=m.val[3];
unsigned char vibDelay=m.val[4];
ins->std.volMacro.len=0;
for (int j=5; j<64; j++) {
unsigned char pos=ins->std.volMacro.len;
if (++ins->std.volMacro.len>=128) break;
if (m.val[j]==0xe1) {
} else if (m.val[j]==0xe0) {
} else if (m.val[j]==0xe8) {
} else if (m.val[j]==0xe9) {
} else {
ins->std.volMacro.val[ins->std.volMacro.len]=m.val[j];
}
}
ds.ins.push_back(ins);
}
ds.insLen=(int)ds.ins.size();
if (active) quitDispatch();
BUSY_BEGIN_SOFT;
saveLock.lock();