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VGM export: always write stream freq first

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tildearrow 2023-01-15 01:20:31 -05:00
parent cb11d3f268
commit 9ada18a57a
2 changed files with 37 additions and 13 deletions
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2
src/engine/engine.h
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@ -442,7 +442,7 @@ class DivEngine {
void processRow(int i, bool afterDelay);
void nextOrder();
void nextRow();
void performVGMWrite(SafeWriter* w, DivSystem sys, DivRegWrite& write, int streamOff, double* loopTimer, double* loopFreq, int* loopSample, bool* sampleDir, bool isSecond, bool directStream);
void performVGMWrite(SafeWriter* w, DivSystem sys, DivRegWrite& write, int streamOff, double* loopTimer, double* loopFreq, int* loopSample, bool* sampleDir, bool isSecond, int* pendingFreq, int* playingSample, bool directStream);
// returns true if end of song.
bool nextTick(bool noAccum=false, bool inhibitLowLat=false);
bool perSystemEffect(int ch, unsigned char effect, unsigned char effectVal);

46
src/engine/vgmOps.cpp
View file

@ -24,7 +24,7 @@
constexpr int MASTER_CLOCK_PREC=(sizeof(void*)==8)?8:0;
void DivEngine::performVGMWrite(SafeWriter* w, DivSystem sys, DivRegWrite& write, int streamOff, double* loopTimer, double* loopFreq, int* loopSample, bool* sampleDir, bool isSecond, bool directStream) {
void DivEngine::performVGMWrite(SafeWriter* w, DivSystem sys, DivRegWrite& write, int streamOff, double* loopTimer, double* loopFreq, int* loopSample, bool* sampleDir, bool isSecond, int* pendingFreq, int* playingSample, bool directStream) {
unsigned char baseAddr1=isSecond?0xa0:0x50;
unsigned char baseAddr2=isSecond?0x80:0;
unsigned short baseAddr2S=isSecond?0x8000:0;
@ -541,14 +541,19 @@ void DivEngine::performVGMWrite(SafeWriter* w, DivSystem sys, DivRegWrite& write
switch (write.addr&0xff) {
case 0: // play sample
if (write.val<song.sampleLen) {
DivSample* sample=song.sample[write.val];
w->writeC(0x95);
w->writeC(streamID);
w->writeS(write.val); // sample number
w->writeC((sample->getLoopStartPosition(DIV_SAMPLE_DEPTH_8BIT)==0)|(sampleDir[streamID]?0x10:0)); // flags
if (sample->isLoopable() && !sampleDir[streamID]) {
loopTimer[streamID]=sample->length8;
loopSample[streamID]=write.val;
if (playingSample[streamID]!=write.val) {
pendingFreq[streamID]=write.val;
} else {
DivSample* sample=song.sample[write.val];
w->writeC(0x95);
w->writeC(streamID);
w->writeS(write.val); // sample number
w->writeC((sample->getLoopStartPosition(DIV_SAMPLE_DEPTH_8BIT)==0)|(sampleDir[streamID]?0x10:0)); // flags
if (sample->isLoopable() && !sampleDir[streamID]) {
loopTimer[streamID]=sample->length8;
loopSample[streamID]=write.val;
}
playingSample[streamID]=write.val;
}
}
break;
@ -557,11 +562,26 @@ void DivEngine::performVGMWrite(SafeWriter* w, DivSystem sys, DivRegWrite& write
w->writeC(streamID);
w->writeI(write.val);
loopFreq[streamID]=write.val;
if (pendingFreq[streamID]!=-1) {
DivSample* sample=song.sample[pendingFreq[streamID]];
w->writeC(0x95);
w->writeC(streamID);
w->writeS(pendingFreq[streamID]); // sample number
w->writeC((sample->getLoopStartPosition(DIV_SAMPLE_DEPTH_8BIT)==0)|(sampleDir[streamID]?0x10:0)); // flags
if (sample->isLoopable() && !sampleDir[streamID]) {
loopTimer[streamID]=sample->length8;
loopSample[streamID]=write.val;
}
playingSample[streamID]=pendingFreq[streamID];
pendingFreq[streamID]=-1;
}
break;
case 2: // stop sample
w->writeC(0x94);
w->writeC(streamID);
loopSample[streamID]=-1;
playingSample[streamID]=-1;
pendingFreq[streamID]=-1;
break;
case 3: // set sample direction
sampleDir[streamID]=write.val;
@ -979,6 +999,8 @@ SafeWriter* DivEngine::saveVGM(bool* sysToExport, bool loop, int version, bool p
double loopFreq[DIV_MAX_CHANS];
int loopSample[DIV_MAX_CHANS];
bool sampleDir[DIV_MAX_CHANS];
int pendingFreq[DIV_MAX_CHANS];
int playingSample[DIV_MAX_CHANS];
std::vector<unsigned int> chipVol;
std::vector<DivDelayedWrite> delayedWrites[DIV_MAX_CHIPS];
std::vector<std::pair<int,DivDelayedWrite>> sortedWrites;
@ -987,6 +1009,8 @@ SafeWriter* DivEngine::saveVGM(bool* sysToExport, bool loop, int version, bool p
loopTimer[i]=0;
loopFreq[i]=0;
loopSample[i]=-1;
pendingFreq[i]=-1;
playingSample[i]=-1;
sampleDir[i]=false;
}
@ -1991,7 +2015,7 @@ SafeWriter* DivEngine::saveVGM(bool* sysToExport, bool loop, int version, bool p
for (int i=0; i<song.systemLen; i++) {
std::vector<DivRegWrite>& writes=disCont[i].dispatch->getRegisterWrites();
for (DivRegWrite& j: writes) {
performVGMWrite(w,song.system[i],j,streamIDs[i],loopTimer,loopFreq,loopSample,sampleDir,isSecond[i],directStream);
performVGMWrite(w,song.system[i],j,streamIDs[i],loopTimer,loopFreq,loopSample,sampleDir,isSecond[i],pendingFreq,playingSample,directStream);
writeCount++;
}
writes.clear();
@ -2031,7 +2055,7 @@ SafeWriter* DivEngine::saveVGM(bool* sysToExport, bool loop, int version, bool p
lastOne=i.second.time;
}
// write write
performVGMWrite(w,song.system[i.first],i.second.write,streamIDs[i.first],loopTimer,loopFreq,loopSample,sampleDir,isSecond[i.first],directStream);
performVGMWrite(w,song.system[i.first],i.second.write,streamIDs[i.first],loopTimer,loopFreq,loopSample,sampleDir,isSecond[i.first],pendingFreq,playingSample,directStream);
writeCount++;
}
sortedWrites.clear();