Add DIV_CMD_SAMPLE_DIR command and macro

src/engine/platform/es5506.cpp

@@ -407,6 +407,12 @@ void DivPlatformES5506::tick(bool sysTick) {
           pageWriteMask(0x00|i,0x5f,0x00,chan[i].pcm.pause?0x0002:0x0000,0x0002);
         }
       }
+      if (chan[i].pcm.direction!=(bool)(chan[i].std.alg.val&2)) {
+        chan[i].pcm.direction=chan[i].std.alg.val&2;
+        if (!chan[i].keyOn) {
+          pageWriteMask(0x00|i,0x5f,0x00,chan[i].pcm.isReversed()?0x0040:0x0000,0x0040);
+        }
+      }
     }
     if (chan[i].pcm.isNoteMap) {
     // note map macros
@@ -510,7 +516,7 @@ void DivPlatformES5506::tick(bool sysTick) {
         }
         if (sampleVaild) {
           if (!chan[i].keyOn) {
-            pageWrite(0x20|i,0x03,(chan[i].pcm.reversed)?chan[i].pcm.end:chan[i].pcm.start);
+            pageWrite(0x20|i,0x03,(chan[i].pcm.isReversed())?chan[i].pcm.end:chan[i].pcm.start);
           }
           chan[i].pcmChanged.slice=1;
         }
@@ -544,7 +550,7 @@ void DivPlatformES5506::tick(bool sysTick) {
       }
       if (chan[i].pcmChanged.loopBank) {
         if (!chan[i].keyOn) {
-          unsigned int loopFlag=(chan[i].pcm.bank<<14)|(chan[i].pcm.reversed?0x0040:0x0000);
+          unsigned int loopFlag=(chan[i].pcm.bank<<14)|(chan[i].pcm.isReversed()?0x0040:0x0000);
           chan[i].isReverseLoop=false;
           switch (chan[i].pcm.loopMode) {
             case DIV_SAMPLE_LOOP_FORWARD: // Forward loop
@@ -641,11 +647,11 @@ void DivPlatformES5506::tick(bool sysTick) {
       chan[i].freq=CLAMP(parent->calcFreq(chan[i].baseFreq,chan[i].pitch,false,2,chan[i].pitch2,chipClock,chan[i].pcm.freqOffs),0,0x1ffff);
       if (chan[i].keyOn) {
         if (chan[i].pcm.index>=0 && chan[i].pcm.index<parent->song.sampleLen) {
-          unsigned int startPos=chan[i].pcm.reversed?chan[i].pcm.end:chan[i].pcm.start;
+          unsigned int startPos=chan[i].pcm.isReversed()?chan[i].pcm.end:chan[i].pcm.start;
           if (chan[i].pcm.nextPos) {
             const unsigned int start=chan[i].pcm.start;
             const unsigned int end=chan[i].pcm.length;
-            startPos=start+((chan[i].pcm.reversed?(end-chan[i].pcm.nextPos):(chan[i].pcm.nextPos))<<11);
+            startPos=start+((chan[i].pcm.isReversed()?(end-chan[i].pcm.nextPos):(chan[i].pcm.nextPos))<<11);
             chan[i].pcm.nextPos=0;
           }
           chan[i].k1Prev=0xffff;
@@ -713,7 +719,7 @@ void DivPlatformES5506::tick(bool sysTick) {
           chan[i].k1Prev=k1;
           pageWrite(0x00|i,0x02,chan[i].resLVol);
           pageWrite(0x00|i,0x04,chan[i].resRVol);
-          unsigned int loopFlag=chan[i].pcm.reversed?0x0040:0x0000;
+          unsigned int loopFlag=chan[i].pcm.isReversed()?0x0040:0x0000;
           chan[i].isReverseLoop=false;
           switch (chan[i].pcm.loopMode) {
             case DIV_SAMPLE_LOOP_FORWARD: // Forward loop
@@ -1036,8 +1042,8 @@ int DivPlatformES5506::dispatch(DivCommand c) {
       if (chan[c.chan].active) {
         const unsigned int start=chan[c.chan].pcm.start;
         const unsigned int end=chan[c.chan].pcm.length;
-        const unsigned int pos=chan[c.chan].pcm.reversed?(end-c.value):c.value;
+        const unsigned int pos=chan[c.chan].pcm.isReversed()?(end-c.value):c.value;
-        if ((chan[c.chan].pcm.reversed && pos>0) || ((!chan[c.chan].pcm.reversed) && pos<end)) {
+        if ((chan[c.chan].pcm.isReversed() && pos>0) || ((!chan[c.chan].pcm.isReversed()) && pos<end)) {
           pageWrite(0x20|c.chan,0x03,start+(pos<<11));
         }
         break;
@@ -1048,6 +1054,13 @@ int DivPlatformES5506::dispatch(DivCommand c) {
       }
       break;
     }
+    case DIV_CMD_SAMPLE_DIR: {
+      if (chan[c.chan].pcm.direction!=(bool)(c.value&1)) {
+        chan[c.chan].pcm.direction=c.value&1;
+        pageWriteMask(0x00|c.chan,0x5f,0x00,chan[c.chan].pcm.isReversed()?0x0040:0x0000,0x0040);
+      }
+      break;
+    }
     case DIV_CMD_GET_VOLMAX:
       return 255;
       break;

src/engine/platform/es5506.h

@@ -32,12 +32,13 @@
 class DivPlatformES5506: public DivDispatch, public es550x_intf {
   struct Channel : public SharedChannel<unsigned int> {
     struct PCM {
+      bool isReversed() { return reversed^direction; }
       bool isNoteMap;
       int index, next;
       int note;
       double freqOffs;
       double nextFreqOffs;
-      bool reversed, pause;
+      bool reversed, pause, direction;
       unsigned int bank;
       unsigned int start;
       unsigned int end;
@@ -55,6 +56,7 @@ class DivPlatformES5506: public DivDispatch, public es550x_intf {
         nextFreqOffs(1.0),
         reversed(false),
         pause(false),
+        direction(false),
         bank(0),
         start(0),
         end(0),

src/engine/sysDef.cpp

@@ -1497,7 +1497,8 @@ void DivEngine::registerSystems() {
       {0x24, {DIV_CMD_ES5506_ENVELOPE_K1RAMP, "24xx: Set envelope filter coefficient k1 ramp (signed) (00 to FF)",effectVal,constVal<0>}},
       {0x25, {DIV_CMD_ES5506_ENVELOPE_K1RAMP, "25xx: Set envelope filter coefficient k1 ramp (signed, slower) (00 to FF)",effectVal,constVal<1>}},
       {0x26, {DIV_CMD_ES5506_ENVELOPE_K2RAMP, "26xx: Set envelope filter coefficient k2 ramp (signed) (00 to FF)",effectVal,constVal<0>}},
-      {0x27, {DIV_CMD_ES5506_ENVELOPE_K2RAMP, "27xx: Set envelope filter coefficient k2 ramp (signed, slower) (00 to FF)",effectVal,constVal<1>}}
+      {0x27, {DIV_CMD_ES5506_ENVELOPE_K2RAMP, "27xx: Set envelope filter coefficient k2 ramp (signed, slower) (00 to FF)",effectVal,constVal<1>}},
+      {0xdf, {DIV_CMD_SAMPLE_DIR, "DFxx: Set sample playback direction (0: normal; 1: reverse)"}}
   };
   EffectHandlerMap es5506PostEffectHandlerMap={
       {0x12, {DIV_CMD_ES5506_PAUSE, "120x: Set pause (bit 0)",effectValAnd<1>}}

src/gui/debug.cpp

@@ -947,6 +947,8 @@ void putDispatchChan(void* data, int chanNum, int type) {
       ImGui::TextColored(ch->pcmChanged.loopBank?colorOn:colorOff,">> PCMLoopBankChanged");
       ImGui::TextColored(ch->isReverseLoop?colorOn:colorOff,">> IsReverseLoop");
       ImGui::TextColored(ch->pcm.reversed?colorOn:colorOff,">> PCMReversed");
+      ImGui::TextColored(ch->pcm.pause?colorOn:colorOff,">> PCMPause");
+      ImGui::TextColored(ch->pcm.direction?colorOn:colorOff,">> PCMDirection");
       ImGui::TextColored(ch->envelope.k1Slow?colorOn:colorOff,">> EnvK1Slow");
       ImGui::TextColored(ch->envelope.k2Slow?colorOn:colorOff,">> EnvK2Slow");
       ImGui::TextColored(ch->overwrite.envelope.k1Slow?colorOn:colorOff,">> EnvK1SlowOverwrite");

src/gui/insEdit.cpp

@@ -291,8 +291,8 @@ const char* es5506EnvelopeModes[3]={
   "k1 slowdown", "k2 slowdown", NULL
 };
 
-const char* es5506ControlModes[2]={
+const char* es5506ControlModes[3]={
-  "pause", NULL
+  "pause", "reverse", NULL
 };
 
 const int orderedOps[4]={
@@ -5411,7 +5411,7 @@ void FurnaceGUI::drawInsEdit() {
             macroList.push_back(FurnaceGUIMacroDesc("Envelope K1 ramp",&ins->std.ex6Macro,-128,127,160,uiColors[GUI_COLOR_MACRO_OTHER]));
             macroList.push_back(FurnaceGUIMacroDesc("Envelope K2 ramp",&ins->std.ex7Macro,-128,127,160,uiColors[GUI_COLOR_MACRO_OTHER]));
             macroList.push_back(FurnaceGUIMacroDesc("Envelope mode",&ins->std.ex8Macro,0,2,64,uiColors[GUI_COLOR_MACRO_OTHER],false,NULL,NULL,true,es5506EnvelopeModes));
-            macroList.push_back(FurnaceGUIMacroDesc("Control",&ins->std.algMacro,0,1,32,uiColors[GUI_COLOR_MACRO_OTHER],false,NULL,NULL,true,es5506ControlModes));
+            macroList.push_back(FurnaceGUIMacroDesc("Control",&ins->std.algMacro,0,2,32,uiColors[GUI_COLOR_MACRO_OTHER],false,NULL,NULL,true,es5506ControlModes));
           }
           if (ins->type==DIV_INS_MSM5232) {
             macroList.push_back(FurnaceGUIMacroDesc("Noise",&ins->std.ex3Macro,0,1,32,uiColors[GUI_COLOR_MACRO_OTHER],false,NULL,NULL,true));