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MOD import: coding style and uninit fix

This commit is contained in:
tildearrow 2022-03-15 21:45:31 -05:00
parent 9b3e0d45bd
commit 4afd3b3ff1
1 changed files with 44 additions and 30 deletions
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74
src/engine/fileOps.cpp
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@ -1235,16 +1235,21 @@ bool DivEngine::loadFur(unsigned char* file, size_t len) {
bool DivEngine::loadMod(unsigned char* file, size_t len) {
struct InvalidHeaderException {};
bool success=false;
int chCount;
int ordCount;
int chCount=0;
int ordCount=0;
std::vector<int> patPtr;
char magic[4]={0,0,0,0};
short defaultVols[31];
int sampLens[31];
// 0=arp, 1=pslide, 2=vib, 3=trem, 4=vslide
bool fxUsage[DIV_MAX_CHANS][5];
bool fxUsage[DIV_MAX_CHANS][5];
SafeReader reader=SafeReader(file,len);
warnings="";
memset(defaultVols,0,31*sizeof(short));
memset(sampLens,0,31*sizeof(int));
memset(fxUsage,0,DIV_MAX_CHANS*5*sizeof(bool));
try {
DivSong ds;
ds.tuning=436.0;
@ -1274,8 +1279,8 @@ bool DivEngine::loadMod(unsigned char* file, size_t len) {
} else if (memcmp(magic,"TDZ",3)==0 && magic[3]>='1' && magic[3]<='9') {
logD("detected a TakeTracker module\n");
chCount=magic[3]-'0';
} else if ((memcmp(magic+2,"CH",2)==0 || memcmp(magic+2,"CN",2)==0)
&& (magic[0]>='1' && magic[0]<='9' && magic[1]>='0' && magic[1]<='9')) {
} else if ((memcmp(magic+2,"CH",2)==0 || memcmp(magic+2,"CN",2)==0) &&
(magic[0]>='1' && magic[0]<='9' && magic[1]>='0' && magic[1]<='9')) {
logD("detected a Fast/TakeTracker module\n");
chCount=((magic[0]-'0')*10)+(magic[1]-'0');
} else {
@ -1283,11 +1288,13 @@ bool DivEngine::loadMod(unsigned char* file, size_t len) {
insCount=15;
throw InvalidHeaderException();
}
// song name
reader.seek(0,SEEK_SET);
ds.name=reader.readString(20);
// samples
for (int i=0;i<insCount;i++) {
for (int i=0; i<insCount; i++) {
DivSample* sample=new DivSample;
sample->depth=8;
sample->name=reader.readString(22);
@ -1308,40 +1315,44 @@ bool DivEngine::loadMod(unsigned char* file, size_t len) {
loopLen=0;
}
if(loopLen>=2) {
if(loopEnd<slen) slen=loopEnd;
if (loopEnd<slen) slen=loopEnd;
sample->loopStart=loopStart;
}
sample->init(slen);
ds.sample.push_back(sample);
}
ds.sampleLen=ds.sample.size();
// orders
ds.ordersLen=ordCount=reader.readC();
reader.readC(); // restart position, unused
int patMax=0;
for (int i=0;i<128;i++) {
for (int i=0; i<128; i++) {
unsigned char pat=reader.readC();
if (pat>patMax) patMax=pat;
for (int j=0;j<chCount;j++) {
for (int j=0; j<chCount; j++) {
ds.orders.ord[j][i]=pat;
}
}
// TODO: maybe change if this is a Soundtracker module?
reader.seek(1084,SEEK_SET);
// patterns
ds.patLen=64;
for (int ch=0;ch<chCount;ch++) {
for (int i=0;i<5;i++) {
for (int ch=0; ch<chCount; ch++) {
for (int i=0; i<5; i++) {
fxUsage[ch][i]=false;
}
}
for (int pat=0;pat<=patMax;pat++) {
for (int pat=0; pat<=patMax; pat++) {
DivPattern* chpats[DIV_MAX_CHANS];
for (int ch=0;ch<chCount;ch++) {
for (int ch=0; ch<chCount; ch++) {
chpats[ch]=ds.pat[ch].getPattern(pat,true);
}
for (int row=0;row<64;row++) {
for (int ch=0;ch<chCount;ch++) {
auto* dstrow=chpats[ch]->data[row];
for (int row=0; row<64; row++) {
for (int ch=0; ch<chCount; ch++) {
short* dstrow=chpats[ch]->data[row];
unsigned char data[4];
reader.read(&data,4);
// instrument
@ -1351,7 +1362,7 @@ bool DivEngine::loadMod(unsigned char* file, size_t len) {
dstrow[3]=defaultVols[ins-1];
}
// note
int period=data[1]+((data[0]&0x0f)*256);
int period=data[1]+((data[0]&0x0f)<<8);
if (period>0 && period<0x0fff) {
short note=(short)round(log2(3424.0/period)*12);
dstrow[0]=((note-1)%12)+1;
@ -1365,9 +1376,9 @@ bool DivEngine::loadMod(unsigned char* file, size_t len) {
short fxval=data[3];
dstrow[4]=fxtyp;
dstrow[5]=fxval;
switch(fxtyp) {
switch (fxtyp) {
case 0:
if(fxval!=0) fxUsage[ch][0]=true;
if (fxval!=0) fxUsage[ch][0]=true;
break;
case 1: case 2: case 3:
fxUsage[ch][1]=true;
@ -1387,25 +1398,26 @@ bool DivEngine::loadMod(unsigned char* file, size_t len) {
fxUsage[ch][3]=true;
break;
case 10:
if(fxval!=0) fxUsage[ch][4]=true;
if (fxval!=0) fxUsage[ch][4]=true;
break;
}
}
}
}
// samples
size_t pos=reader.tell();
for (int i=0;i<31;i++) {
for (int i=0; i<31; i++) {
reader.seek(pos,SEEK_SET);
reader.read(ds.sample[i]->data8,ds.sample[i]->samples);
pos+=sampLens[i];
}
// convert effects
for (int ch=0;ch<=chCount;ch++) {
for (int ch=0; ch<=chCount; ch++) {
unsigned char fxCols=1;
for (int pat=0;pat<=patMax;pat++) {
auto* data=ds.pat[ch].getPattern(pat,false)->data;
for (int pat=0; pat<=patMax; pat++) {
auto* data=ds.pat[ch].getPattern(pat,true)->data;
short lastPitchEffect=-1;
short lastEffectState[5]={-1,-1,-1,-1,-1};
short setEffectState[5]={-1,-1,-1,-1,-1};
@ -1434,15 +1446,15 @@ bool DivEngine::loadMod(unsigned char* file, size_t len) {
case 1: // note slide up
case 2: // note slide down
case 3: // porta
if ((fxTyp==3)&&(fxVal==0)) {
if (fxTyp==3 && fxVal==0) {
if (setEffectState[1]<0) break;
fxVal=setEffectState[1];
}
setEffectState[1]=fxVal;
effectState[1]=fxVal;
if((effectState[1]!=lastEffectState[1])||
(fxTyp!=lastPitchEffect)||
(effectState[1]!=0&&data[row][0]>0)) {
if ((effectState[1]!=lastEffectState[1]) ||
(fxTyp!=lastPitchEffect) ||
(effectState[1]!=0 && data[row][0]>0)) {
writeFxCol(fxTyp,fxVal);
}
lastPitchEffect=fxTyp;
@ -1515,10 +1527,10 @@ bool DivEngine::loadMod(unsigned char* file, size_t len) {
}
break;
}
for (int i=0;i<5;i++) {
for (int i=0; i<5; i++) {
// pitch slide and volume slide needs to be kept active on new note
// even after target/max is reached
if (fxUsage[ch][i]&&((effectState[i]!=lastEffectState[i])||(effectState[i]!=0&&i==4&&data[row][3]>=0))) {
if (fxUsage[ch][i] && (effectState[i]!=lastEffectState[i] || (effectState[i]!=0 && i==4 && data[row][3]>=0))) {
writeFxCol(fxUsageTyp[i],effectState[i]);
}
}
@ -1548,6 +1560,7 @@ bool DivEngine::loadMod(unsigned char* file, size_t len) {
ds.pat[i].effectRows=1;
ds.chanShow[i]=false;
}
// instrument creation
for(int i=0; i<insCount; i++) {
DivInstrument* ins=new DivInstrument;
@ -1591,6 +1604,7 @@ bool DivEngine::load(unsigned char* f, size_t slen) {
}
if (memcmp(f,DIV_DMF_MAGIC,16)!=0 && memcmp(f,DIV_FUR_MAGIC,16)!=0) {
// try loading as a .mod first before trying to decompress
// TODO: move to a different location?
logD("loading as .mod...\n");
if (loadMod(f,slen)) {
delete[] f;