VGM export: NES samples

src/engine/engine.cpp

@@ -2084,6 +2084,8 @@ SafeWriter* DivEngine::saveVGM() {
   int streamIDs[32];
 
   bool writeDACSamples=false;
+  bool writeNESSamples=false;
+  bool writePCESamples=false;
   bool writeADPCM=false;
   bool writeSegaPCM=false;
 
@@ -2119,14 +2121,14 @@ SafeWriter* DivEngine::saveVGM() {
         if (!hasPCE) {
           hasPCE=3579545;
           willExport[i]=true;
-          writeDACSamples=true;
+          writePCESamples=true;
         }
         break;
       case DIV_SYSTEM_NES:
         if (!hasNES) {
           hasNES=1789773;
           willExport[i]=true;
-          writeDACSamples=true;
+          writeNESSamples=true;
         }
         break;
       case DIV_SYSTEM_ARCADE:
@@ -2275,6 +2277,27 @@ SafeWriter* DivEngine::saveVGM() {
     }
   }
 
+  if (writeNESSamples) for (int i=0; i<song.sampleLen; i++) {
+    DivSample* sample=song.sample[i];
+    w->writeC(0x67);
+    w->writeC(0x66);
+    w->writeC(7);
+    w->writeI(sample->rendLength);
+    if (sample->depth==8) {
+      for (unsigned int j=0; j<sample->rendLength; j++) {
+        w->writeC(((unsigned char)sample->rendData[j]+0x80)>>1);
+      }
+    } else {
+      for (unsigned int j=0; j<sample->rendLength; j++) {
+        w->writeC(((unsigned short)sample->rendData[j]+0x8000)>>9);
+      }
+    }
+  }
+
+  if (writePCESamples) {
+    // TODO
+  }
+
   if (writeSegaPCM) {
     unsigned char* pcmMem=new unsigned char[16777216];
 
@@ -2366,6 +2389,24 @@ SafeWriter* DivEngine::saveVGM() {
         w->writeC(1);
         w->writeC(0);
 
+        w->writeC(0x92);
+        w->writeC(streamID);
+        w->writeI(32000); // default
+        streamID++;
+        break;
+      case DIV_SYSTEM_NES:
+        w->writeC(0x90);
+        w->writeC(streamID);
+        w->writeC(20);
+        w->writeC(0); // port
+        w->writeC(0x11); // DAC
+
+        w->writeC(0x91);
+        w->writeC(streamID);
+        w->writeC(7);
+        w->writeC(1);
+        w->writeC(0);
+
         w->writeC(0x92);
         w->writeC(streamID);
         w->writeI(32000); // default

src/engine/platform/nes.cpp

@@ -168,6 +168,7 @@ void DivPlatformNES::tick() {
     chan[4].freq=parent->calcFreq(chan[4].baseFreq,chan[4].pitch,false);
     if (chan[4].furnaceDac) {
       dacRate=MIN(chan[4].freq,32000);
+      if (dumpWrites) addWrite(0xffff0001,dacRate);
     }
     chan[4].freqChanged=false;
   }
@@ -182,7 +183,10 @@ int DivPlatformNES::dispatch(DivCommand c) {
           dacSample=ins->amiga.initSample;
           if (dacSample<0 || dacSample>=parent->song.sampleLen) {
             dacSample=-1;
+            if (dumpWrites) addWrite(0xffff0002,0);
             break;
+          } else {
+            if (dumpWrites) addWrite(0xffff0000,dacSample);
           }
           dacPos=0;
           dacPeriod=0;
@@ -198,11 +202,15 @@ int DivPlatformNES::dispatch(DivCommand c) {
           dacSample=12*sampleBank+c.value%12;
           if (dacSample>=parent->song.sampleLen) {
             dacSample=-1;
+            if (dumpWrites) addWrite(0xffff0002,0);
             break;
+          } else {
+            if (dumpWrites) addWrite(0xffff0000,dacSample);
           }
           dacPos=0;
           dacPeriod=0;
           dacRate=parent->song.sample[dacSample]->rate;
+          if (dumpWrites) addWrite(0xffff0001,dacRate);
           chan[c.chan].furnaceDac=false;
         }
         break;
@@ -229,7 +237,10 @@ int DivPlatformNES::dispatch(DivCommand c) {
       }
       break;
     case DIV_CMD_NOTE_OFF:
-      if (c.chan==4) dacSample=-1;
+      if (c.chan==4) {
+        dacSample=-1;
+        if (dumpWrites) addWrite(0xffff0002,0);
+      }
       chan[c.chan].active=false;
       chan[c.chan].keyOff=true;
       chan[c.chan].std.init(NULL);