core quality, part 1

PC Engine

src/engine/dispatchContainer.cpp

@@ -302,6 +302,11 @@ void DivDispatchContainer::init(DivSystem sys, DivEngine* eng, int chanCount, do
       break;
     case DIV_SYSTEM_PCE:
       dispatch=new DivPlatformPCE;
+      if (isRender) {
+        ((DivPlatformPCE*)dispatch)->setCoreQuality(eng->getConfInt("pceQualityRender",3));
+      } else {
+        ((DivPlatformPCE*)dispatch)->setCoreQuality(eng->getConfInt("pceQuality",3));
+      }
       break;
     case DIV_SYSTEM_NES:
       dispatch=new DivPlatformNES;

src/engine/platform/pce.cpp

@@ -96,7 +96,7 @@ void DivPlatformPCE::acquire(short** buf, size_t len) {
     }
     memset(tempL,0,24*sizeof(int));
     memset(tempR,0,24*sizeof(int));
-    pce->Update(24);
+    pce->Update(coreQuality);
     pce->ResetTS(0);
 
     for (int i=0; i<6; i++) {
@@ -629,7 +629,7 @@ void DivPlatformPCE::setFlags(const DivConfig& flags) {
   }
   CHECK_CUSTOM_CLOCK;
   antiClickEnabled=!flags.getBool("noAntiClick",false);
-  rate=chipClock/12;
+  rate=chipClock/(coreQuality>>1);
   for (int i=0; i<6; i++) {
     oscBuf[i]->rate=rate;
   }
@@ -649,6 +649,32 @@ void DivPlatformPCE::poke(std::vector<DivRegWrite>& wlist) {
   for (DivRegWrite& i: wlist) rWrite(i.addr,i.val);
 }
 
+void DivPlatformPCE::setCoreQuality(unsigned char q) {
+  switch (q) {
+    case 0:
+      coreQuality=192;
+      break;
+    case 1:
+      coreQuality=96;
+      break;
+    case 2:
+      coreQuality=48;
+      break;
+    case 3:
+      coreQuality=24;
+      break;
+    case 4:
+      coreQuality=6;
+      break;
+    case 5:
+      coreQuality=2;
+      break;
+    default:
+      coreQuality=24;
+      break;
+  }
+}
+
 int DivPlatformPCE::init(DivEngine* p, int channels, int sugRate, const DivConfig& flags) {
   parent=p;
   dumpWrites=false;

src/engine/platform/pce.h

@@ -72,6 +72,7 @@ class DivPlatformPCE: public DivDispatch {
   int tempL[32];
   int tempR[32];
   unsigned char sampleBank, lfoMode, lfoSpeed;
+  int coreQuality;
   PCE_PSG* pce;
   unsigned char regPool[128];
   void updateWave(int ch);
@@ -96,6 +97,7 @@ class DivPlatformPCE: public DivDispatch {
     void muteChannel(int ch, bool mute);
     int getOutputCount();
     bool keyOffAffectsArp(int ch);
+    void setCoreQuality(unsigned char q);
     void setFlags(const DivConfig& flags);
     void notifyWaveChange(int wave);
     void notifyInsDeletion(void* ins);

src/engine/platform/sound/pce_psg.cpp

@@ -70,6 +70,7 @@ static const int scale_tab[] =
 
 inline void PCE_PSG::UpdateOutputSub(const int32_t timestamp, psg_channel *ch, const int32_t samp0, const int32_t samp1)
 {
+  if (timestamp>0) return;
   HRBufs[0][timestamp]+=samp0;
   HRBufs[1][timestamp]+=samp1;
   /*