audio issue debugging

src/engine/engine.h

@@ -570,6 +570,7 @@ class DivEngine {
     float oscSize;
     int oscReadPos, oscWritePos;
     int tickMult;
+    int lastNBIns, lastNBOuts, lastNBSize;
     std::atomic<size_t> processTime;
 
     void runExportThread();
@@ -1252,6 +1253,9 @@ class DivEngine {
       oscReadPos(0),
       oscWritePos(0),
       tickMult(1),
+      lastNBIns(0),
+      lastNBOuts(0),
+      lastNBSize(0),
       processTime(0),
       yrw801ROM(NULL),
       tg100ROM(NULL),

src/engine/playback.cpp

@@ -1694,6 +1694,10 @@ void DivEngine::runMidiTime(int totalCycles) {
 }
 
 void DivEngine::nextBuf(float** in, float** out, int inChans, int outChans, unsigned int size) {
+  lastNBIns=inChans;
+  lastNBOuts=outChans;
+  lastNBSize=size;
+
   if (!size) {
     logW("nextBuf called with size 0!");
     return;