init support for setting program change

src/engine/engine.cpp

@@ -4371,6 +4371,7 @@ bool DivEngine::initAudioBackend() {
   lowLatency=getConfInt("lowLatency",0);
   metroVol=(float)(getConfInt("metroVol",100))/100.0f;
   midiOutClock=getConfInt("midiOutClock",0);
+  midiOutProgramChange = getConfInt("midiOutProgramChange",0);
   midiOutMode=getConfInt("midiOutMode",DIV_MIDI_MODE_NOTE);
   if (metroVol<0.0f) metroVol=0.0f;
   if (metroVol>2.0f) metroVol=2.0f;

src/engine/engine.h

@@ -365,6 +365,7 @@ class DivEngine {
   bool systemsRegistered;
   bool hasLoadedSomething;
   bool midiOutClock;
+  bool midiOutProgramChange;
   int midiOutMode;
   int softLockCount;
   int subticks, ticks, curRow, curOrder, prevRow, prevOrder, remainingLoops, totalLoops, lastLoopPos, exportLoopCount, nextSpeed, elapsedBars, elapsedBeats, curSpeed;
@@ -1110,6 +1111,7 @@ class DivEngine {
       systemsRegistered(false),
       hasLoadedSomething(false),
       midiOutClock(false),
+      midiOutProgramChange(false),
       midiOutMode(DIV_MIDI_MODE_NOTE),
       softLockCount(0),
       subticks(0),

src/engine/playback.cpp

@@ -278,7 +278,7 @@ int DivEngine::dispatchCmd(DivCommand c) {
     cmdStream.push_back(c);
   }
 
-  if (output) if (!skipping && output->midiOut!=NULL) {
+  if (output) if (!skipping && output->midiOut!=NULL && !isChannelMuted(c.chan)) {
     if (output->midiOut->isDeviceOpen()) {
       if (midiOutMode==DIV_MIDI_MODE_NOTE) {
         int scaledVol=(chan[c.chan].volume*127)/MAX(1,chan[c.chan].volMax);
@@ -305,7 +305,7 @@ int DivEngine::dispatchCmd(DivCommand c) {
             chan[c.chan].curMidiNote=-1;
             break;
           case DIV_CMD_INSTRUMENT:
-            if (chan[c.chan].lastIns!=c.value) {
+            if (chan[c.chan].lastIns!=c.value && midiOutProgramChange) {
               output->midiOut->send(TAMidiMessage(0xc0|(c.chan&15),c.value,0));
             }
             break;

src/gui/gui.h

@@ -1362,6 +1362,7 @@ class FurnaceGUI {
     int channelFont;
     int channelTextCenter;
     int midiOutClock;
+    int midiOutProgramChange;
     int midiOutMode;
     int maxRecentFile;
     int centerPattern;
@@ -1503,6 +1504,7 @@ class FurnaceGUI {
       channelFont(1),
       channelTextCenter(1),
       midiOutClock(0),
+      midiOutProgramChange(0),
       midiOutMode(1),
       maxRecentFile(10),
       centerPattern(0),

src/gui/settings.cpp

@@ -1149,6 +1149,11 @@ void FurnaceGUI::drawSettings() {
               settings.midiOutClock=midiOutClockB;
             }
 
+            bool midiOutProgramChangeB=settings.midiOutProgramChange;
+            if (ImGui::Checkbox("Send Program Change",&midiOutProgramChangeB)) {
+              settings.midiOutProgramChange=midiOutProgramChangeB;
+            }
+
             ImGui::TreePop();
           }
         }
@@ -2608,6 +2613,7 @@ void FurnaceGUI::syncSettings() {
   settings.channelTextCenter=e->getConfInt("channelTextCenter",1);
   settings.maxRecentFile=e->getConfInt("maxRecentFile",10);
   settings.midiOutClock=e->getConfInt("midiOutClock",0);
+  settings.midiOutProgramChange=e->getConfInt("midiOutProgramChange",0);
   settings.midiOutMode=e->getConfInt("midiOutMode",1);
   settings.centerPattern=e->getConfInt("centerPattern",0);
   settings.ordersCursor=e->getConfInt("ordersCursor",1);
@@ -2726,6 +2732,7 @@ void FurnaceGUI::syncSettings() {
   clampSetting(settings.channelTextCenter,0,1);
   clampSetting(settings.maxRecentFile,0,30);
   clampSetting(settings.midiOutClock,0,1);
+  clampSetting(settings.midiOutProgramChange,0,1);
   clampSetting(settings.midiOutMode,0,2);
   clampSetting(settings.centerPattern,0,1);
   clampSetting(settings.ordersCursor,0,1);
@@ -2935,6 +2942,7 @@ void FurnaceGUI::commitSettings() {
   e->setConf("channelTextCenter",settings.channelTextCenter);
   e->setConf("maxRecentFile",settings.maxRecentFile);
   e->setConf("midiOutClock",settings.midiOutClock);
+  e->setConf("midiOutProgramChange",settings.midiOutProgramChange);
   e->setConf("midiOutMode",settings.midiOutMode);
   e->setConf("centerPattern",settings.centerPattern);
   e->setConf("ordersCursor",settings.ordersCursor);