kind of MIDI output

src/audio/abstract.cpp

@@ -61,6 +61,10 @@ bool TAMidiIn::gather() {
   return false;
 }
 
+bool TAMidiOut::send(const TAMidiMessage& what) {
+  return false;
+}
+
 bool TAMidiIn::isDeviceOpen() {
   return false;
 }

src/audio/rtmidi.cpp

@@ -19,6 +19,7 @@
 
 #include "rtmidi.h"
 #include "../ta-log.h"
+#include "taAudio.h"
 
 // --- IN ---
 
@@ -77,6 +78,7 @@ bool TAMidiInRtMidi::openDevice(String name) {
       }
     }
     isOpen=portOpen;
+    if (!portOpen) logW("could not find MIDI in device...\n");
     return portOpen;
   } catch (RtMidiError& e) {
     logW("could not open MIDI in device! %s\n",e.what());
@@ -120,9 +122,40 @@ bool TAMidiInRtMidi::quit() {
 
 // --- OUT ---
 
-bool TAMidiOutRtMidi::send(TAMidiMessage& what) {
-  // TODO
-  return false;
+bool TAMidiOutRtMidi::send(const TAMidiMessage& what) {
+  if (!isOpen) return false;
+  if (what.type<0x80) return false;
+  size_t len=0;
+  switch (what.type&0xf0) {
+    case TA_MIDI_NOTE_OFF:
+    case TA_MIDI_NOTE_ON:
+    case TA_MIDI_AFTERTOUCH:
+    case TA_MIDI_CONTROL:
+    case TA_MIDI_PITCH_BEND:
+      len=3;
+      break;
+    case TA_MIDI_PROGRAM:
+    case TA_MIDI_CHANNEL_AFTERTOUCH:
+      len=2;
+      break;
+  }
+  if (len==0) switch (what.type) {
+    case TA_MIDI_SYSEX: // currently not supported :<
+      return false;
+      break;
+    case TA_MIDI_MTC_FRAME:
+    case TA_MIDI_SONG_SELECT:
+      len=2;
+      break;
+    case TA_MIDI_POSITION:
+      len=3;
+      break;
+    default:
+      len=1;
+      break;
+  }
+  port->sendMessage((const unsigned char*)&what.type,len);
+  return true;
 }
 
 bool TAMidiOutRtMidi::isDeviceOpen() {
@@ -143,6 +176,7 @@ bool TAMidiOutRtMidi::openDevice(String name) {
       }
     }
     isOpen=portOpen;
+    if (!portOpen) logW("could not find MIDI out device...\n");
     return portOpen;
   } catch (RtMidiError& e) {
     logW("could not open MIDI out device! %s\n",e.what());

src/audio/rtmidi.h

@@ -40,7 +40,7 @@ class TAMidiOutRtMidi: public TAMidiOut {
   RtMidiOut* port;
   bool isOpen;
   public:
-    bool send(TAMidiMessage& what);
+    bool send(const TAMidiMessage& what);
     bool isDeviceOpen();
     bool openDevice(String name);
     bool closeDevice();

src/audio/taAudio.h

@@ -99,6 +99,16 @@ struct TAMidiMessage {
   void submitSysEx(std::vector<unsigned char> data);
   void done();
 
+  TAMidiMessage(unsigned char t, unsigned char d0, unsigned char d1):
+    time(0.0),
+    type(t),
+    sysExData(NULL),
+    sysExLen(0) {
+    memset(&data,0,sizeof(data));
+    data[0]=d0;
+    data[1]=d1;
+  }
+
   TAMidiMessage():
     time(0.0),
     type(0),
@@ -127,7 +137,7 @@ class TAMidiIn {
 class TAMidiOut {
   std::queue<TAMidiMessage> queue;
   public:
-    bool send(TAMidiMessage& what);
+    virtual bool send(const TAMidiMessage& what);
     virtual bool isDeviceOpen();
     virtual bool openDevice(String name);
     virtual bool closeDevice();

src/engine/engine.cpp

@@ -790,13 +790,20 @@ void DivEngine::playSub(bool preserveDrift, int goalRow) {
   }
   speedAB=false;
   playing=true;
+  skipping=true;
   for (int i=0; i<song.systemLen; i++) disCont[i].dispatch->setSkipRegisterWrites(true);
   while (playing && curOrder<goal) {
-    if (nextTick(preserveDrift)) return;
+    if (nextTick(preserveDrift)) {
+      skipping=false;
+      return;
+    }
   }
   int oldOrder=curOrder;
   while (playing && curRow<goalRow) {
-    if (nextTick(preserveDrift)) return;
+    if (nextTick(preserveDrift)) {
+      skipping=false;
+      return;
+    }
     if (oldOrder!=curOrder) break;
   }
   for (int i=0; i<song.systemLen; i++) disCont[i].dispatch->setSkipRegisterWrites(false);
@@ -816,6 +823,7 @@ void DivEngine::playSub(bool preserveDrift, int goalRow) {
   if (!preserveDrift) {
     ticks=1;
   }
+  skipping=false;
   cmdStream.clear();
 }
 
@@ -2864,6 +2872,16 @@ bool DivEngine::initAudioBackend() {
       }
     }
   }
+  if (output->midiOut) {
+    String outName=getConfString("midiOutDevice","");
+    if (!outName.empty()) {
+      // try opening device
+      logI("opening MIDI output.\n");
+      if (!output->midiOut->openDevice(outName)) {
+        logW("could not open MIDI output device!\n");
+      }
+    }
+  }
 
   return true;
 }
@@ -2876,6 +2894,12 @@ bool DivEngine::deinitAudioBackend() {
         output->midiIn->closeDevice();
       }
     }
+    if (output->midiOut) {
+      if (output->midiOut->isDeviceOpen()) {
+        logI("closing MIDI output.\n");
+        output->midiOut->closeDevice();
+      }
+    }
     output->quitMidi();
     output->quit();
     delete output;

src/engine/engine.h

@@ -86,7 +86,7 @@ struct DivChannelState {
   bool doNote, legato, portaStop, keyOn, keyOff, nowYouCanStop, stopOnOff;
   bool arpYield, delayLocked, inPorta, scheduledSlideReset, shorthandPorta, noteOnInhibit, resetArp;
 
-  int midiNote;
+  int midiNote, curMidiNote;
 
   DivChannelState():
     note(-1),
@@ -129,7 +129,8 @@ struct DivChannelState {
     shorthandPorta(false),
     noteOnInhibit(false),
     resetArp(false),
-    midiNote(-1) {}
+    midiNote(-1),
+    curMidiNote(-1) {}
 };
 
 struct DivNoteEvent {
@@ -194,6 +195,7 @@ class DivEngine {
   bool cmdStreamEnabled;
   bool softLocked;
   bool firstTick;
+  bool skipping;
   int softLockCount;
   int ticks, curRow, curOrder, remainingLoops, nextSpeed;
   double divider;
@@ -712,6 +714,7 @@ class DivEngine {
       cmdStreamEnabled(false),
       softLocked(false),
       firstTick(false),
+      skipping(false),
       softLockCount(0),
       ticks(0),
       curRow(0),

src/engine/playback.cpp

@@ -172,7 +172,49 @@ int DivEngine::dispatchCmd(DivCommand c) {
   if (cmdStreamEnabled && cmdStream.size()<2000) {
     cmdStream.push_back(c);
   }
+
+  if (!skipping && output->midiOut!=NULL) {
+    if (output->midiOut->isDeviceOpen()) {
+      int scaledVol=(chan[c.chan].volume*127)/MAX(1,chan[c.chan].volMax);
+      if (scaledVol<0) scaledVol=0;
+      if (scaledVol>127) scaledVol=127;
+      switch (c.cmd) {
+        case DIV_CMD_NOTE_ON:
+        case DIV_CMD_LEGATO:
+          if (chan[c.chan].curMidiNote>=0) {
+            output->midiOut->send(TAMidiMessage(0x80|(c.chan&15),chan[c.chan].curMidiNote,scaledVol));
+          }
+          if (c.value!=DIV_NOTE_NULL) chan[c.chan].curMidiNote=c.value+12;
+          output->midiOut->send(TAMidiMessage(0x90|(c.chan&15),chan[c.chan].curMidiNote,scaledVol));
+          break;
+        case DIV_CMD_NOTE_OFF:
+        case DIV_CMD_NOTE_OFF_ENV:
+          if (chan[c.chan].curMidiNote>=0) {
+            output->midiOut->send(TAMidiMessage(0x80|(c.chan&15),chan[c.chan].curMidiNote,scaledVol));
+          }
+          chan[c.chan].curMidiNote=-1;
+          break;
+        case DIV_CMD_INSTRUMENT:
+          output->midiOut->send(TAMidiMessage(0xc0|(c.chan&15),c.value,0));
+          break;
+        case DIV_CMD_VOLUME:
+          //output->midiOut->send(TAMidiMessage(0xb0|(c.chan&15),0x07,scaledVol));
+          break;
+        case DIV_CMD_PITCH: {
+          int pitchBend=8192+(c.value<<5);
+          if (pitchBend<0) pitchBend=0;
+          if (pitchBend>16383) pitchBend=16383;
+          output->midiOut->send(TAMidiMessage(0xe0|(c.chan&15),pitchBend&0x7f,pitchBend>>7));
+          break;
+        }
+        default:
+          break;
+      }
+    }
+  }
+
   c.chan=dispatchChanOfChan[c.dis];
+
   return disCont[dispatchOfChan[c.dis]].dispatch->dispatch(c);
 }