volume handling refactor, part 1 - BEWARE

do not use these versions for production. your modules will break until this is finished!

only Amiga is done for now

src/engine/chipUtils.h

@@ -31,7 +31,7 @@ template<typename T> struct SharedChannel {
   int freq, baseFreq, baseNoteOverride, pitch, pitch2, arpOff;
   int ins, note;
   bool active, insChanged, freqChanged, fixedArp, keyOn, keyOff, portaPause, inPorta, volChanged;
-  T vol, outVol;
+  T vol, macroVol, outVol, maxVol;
   DivMacroInt std;
   void handleArp(int offset=0) {
     if (std.arp.had) {
@@ -61,6 +61,19 @@ template<typename T> struct SharedChannel {
     arpOff=0;
     baseNoteOverride=0;
     fixedArp=false;
+    if (active && !std.brokenOutVol()) {
+      if (which==NULL) {
+        if (macroVol!=maxVol) {
+          macroVol=maxVol;
+          volChanged=true;
+        }
+      } else if (which->std.volMacro.len==0) {
+        if (macroVol!=maxVol) {
+          macroVol=maxVol;
+          volChanged=true;
+        }
+      }
+    }
   }
   SharedChannel(T initVol):
     freq(0),
@@ -79,9 +92,11 @@ template<typename T> struct SharedChannel {
     keyOff(false),
     portaPause(false),
     inPorta(false),
-    volChanged(false),
+    volChanged(true),
     vol(initVol),
+    macroVol(initVol),
     outVol(initVol),
+    maxVol(initVol),
     std() {} 
 };