dev137 - new mixing volumes

YM2612 is now twice as loud
SN76489 and OPLL are 1.5x loud
X1-010 is four times louder

src/engine/platform/genesis.cpp

@@ -1170,6 +1170,10 @@ int DivPlatformGenesis::getRegisterPoolSize() {
   return 512;
 }
 
+float DivPlatformGenesis::getPostAmp() {
+  return 2.0f;
+}
+
 void DivPlatformGenesis::reset() {
   while (!writes.empty()) writes.pop_front();
   memset(regPool,0,512);

src/engine/platform/genesis.h

@@ -114,6 +114,7 @@ class DivPlatformGenesis: public DivPlatformOPN {
     void setYMFM(bool use);
     bool keyOffAffectsArp(int ch);
     bool keyOffAffectsPorta(int ch);
+    float getPostAmp();
     void toggleRegisterDump(bool enable);
     void setFlags(const DivConfig& flags);
     void notifyInsChange(int ins);

src/engine/platform/opll.cpp

@@ -958,6 +958,10 @@ void DivPlatformOPLL::setYMFM(bool use) {
   useYMFM=use;
 }
 
+float DivPlatformOPLL::getPostAmp() {
+  return 1.5f;
+}
+
 void DivPlatformOPLL::setFlags(const DivConfig& flags) {
   int clockSel=flags.getInt("clockSel",0);
   if (clockSel==3) {

src/engine/platform/opll.h

@@ -95,6 +95,7 @@ class DivPlatformOPLL: public DivDispatch {
     void setYMFM(bool use);
     bool keyOffAffectsArp(int ch);
     bool keyOffAffectsPorta(int ch);
+    float getPostAmp();
     void toggleRegisterDump(bool enable);
     void setVRC7(bool vrc);
     void setProperDrums(bool pd);

src/engine/platform/sms.cpp

@@ -39,6 +39,10 @@ const char** DivPlatformSMS::getRegisterSheet() {
   return stereo?regCheatSheetGG:regCheatSheetSN;
 }
 
+float DivPlatformSMS::getPostAmp() {
+  return 1.5f;
+}
+
 void DivPlatformSMS::acquire_nuked(short** buf, size_t len) {
   int oL=0;
   int oR=0;

src/engine/platform/sms.h

@@ -81,6 +81,7 @@ class DivPlatformSMS: public DivDispatch {
     int getOutputCount();
     bool keyOffAffectsArp(int ch);
     bool keyOffAffectsPorta(int ch);
+    float getPostAmp();
     int getPortaFloor(int ch);
     void setFlags(const DivConfig& flags);
     void notifyInsDeletion(void* ins);

src/engine/platform/x1_010.cpp

@@ -903,6 +903,10 @@ bool DivPlatformX1_010::keyOffAffectsArp(int ch) {
   return true;
 }
 
+float DivPlatformX1_010::getPostAmp() {
+  return 4.0f;
+}
+
 void DivPlatformX1_010::notifyWaveChange(int wave) {
   for (int i=0; i<16; i++) {
     if (chan[i].wave==wave) {

src/engine/platform/x1_010.h

@@ -140,6 +140,7 @@ class DivPlatformX1_010: public DivDispatch, public vgsound_emu_mem_intf {
     void muteChannel(int ch, bool mute);
     int getOutputCount();
     bool keyOffAffectsArp(int ch);
+    float getPostAmp();
     void setFlags(const DivConfig& flags);
     void notifyWaveChange(int wave);
     void notifyInsDeletion(void* ins);