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IT import: fix empty asset loading

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tildearrow 2024-06-24 04:01:08 -05:00
parent 6d4efbd908
commit 63f8289847
1 changed files with 20 additions and 0 deletions
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20
src/engine/fileOps/it.cpp
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@ -136,6 +136,12 @@ bool DivEngine::loadIT(unsigned char* file, size_t len) {
// read instruments
for (int i=0; i<ds.insLen; i++) {
DivInstrument* ins=new DivInstrument;
ins->type=DIV_INS_ES5506;
if (insPtr[i]==0) {
ds.ins.push_back(ins);
continue;
}
logV("reading instrument %d...",i);
if (!reader.seek(insPtr[i],SEEK_SET)) {
@ -252,6 +258,11 @@ bool DivEngine::loadIT(unsigned char* file, size_t len) {
for (int i=0; i<ds.sampleLen; i++) {
DivSample* s=new DivSample;
if (samplePtr[i]==0) {
ds.sample.push_back(s);
continue;
}
logV("reading sample %d...",i);
if (!reader.seek(samplePtr[i],SEEK_SET)) {
logE("premature end of file!");
@ -401,6 +412,8 @@ bool DivEngine::loadIT(unsigned char* file, size_t len) {
// read patterns
int maxChan=0;
for (int i=0; i<patCount; i++) {
if (patPtr[i]==0) continue;
unsigned char mask[64];
unsigned char note[64];
unsigned char ins[64];
@ -427,6 +440,13 @@ bool DivEngine::loadIT(unsigned char* file, size_t len) {
unsigned int dataLen=(unsigned short)reader.readS();
unsigned short patRows=reader.readS();
if (patRows>DIV_MAX_ROWS) {
logE("too many rows! %d",patRows);
lastError="too many rows";
delete[] file;
return false;
}
reader.readI(); // x
dataLen+=reader.tell();