Legato

Source/TonalVoice.cpp

@@ -16,7 +16,9 @@
 // The base for pulse/triangle (Abstract)
 //
 //---------------------------------------------
-TonalVoice::TonalVoice (SettingRefs* sRefs) : BaseVoice (sRefs) {}
+TonalVoice::TonalVoice (SettingRefs* sRefs) : BaseVoice (sRefs) {
+    // testArpeggioNotes();
+}
 
 void TonalVoice::startNote (int midiNoteNumber, float velocity, SynthesiserSound*, int currentPitchBendPosition)
 {
@@ -30,6 +32,12 @@ void TonalVoice::startNote (int midiNoteNumber, float velocity, SynthesiserSound
     float time = * (settingRefs->sweepTime);
     currentAutoBendAmount = iniPitch;
     autoBendDelta = -1.0 * iniPitch / (time * getSampleRate());
+    
+    portamentoTime = 0;
+    currentArpeggioFrame = 0;
+    arpeggioFrameTimer = 0;
+    arpeggioFrameLength = 0;
+    currentNumNoteBuffer = 0;
 }
 
 void TonalVoice::advanceControlFrame()
@@ -90,6 +98,127 @@ void TonalVoice::controllerMoved (int type, int amount)
     }
 }
 
+
+void TonalVoice::setLegatoMode(double time) {
+    portamentoTime = time;
+//    currentNumNoteBuffer = 1;
+//    noteBuffer[0] = noteNumber;
+}
+
+void TonalVoice::addLegatoNote (int midiNoteNumber, float velocity) {
+    if (currentNumNoteBuffer >= 10) {
+        return;
+    }
+
+    // Push to last
+//    noteBuffer[currentNumNoteBuffer] = midiNoteNumber;
+//    currentNumNoteBuffer++;
+    
+    int previousNoteNo = noteNumber;
+    BaseVoice::changeNote(midiNoteNumber, velocity);
+    
+    // Portamento implementation is just applying auto bend
+    if (portamentoTime > 0) {
+        currentAutoBendAmount = (double)(previousNoteNo - midiNoteNumber);
+        autoBendDelta = -1.0 * currentAutoBendAmount / (portamentoTime * getSampleRate());
+    }
+}
+
+int TonalVoice::removeLegatoNote(int midiNoteNumber) {
+//    if (currentNumNoteBuffer==0) {
+//        return 0;
+//    }
+//
+//    int i;
+//    for (i=0; i<currentNumNoteBuffer; i++) {
+//        if (noteBuffer[i] == midiNoteNumber) break;
+//    }
+//    if (i == currentNumNoteBuffer) { // not found
+//        return currentNumNoteBuffer;
+//    }
+//    shiftNoteBuffer(i);
+//    currentNumNoteBuffer--;
+    
+    if (midiNoteNumber == noteNumber) {
+        return 0;
+    } else {
+        return 1;
+    }
+}
+
+
+void TonalVoice::setArpeggioMode(double interval)
+{
+    arpeggioFrameLength = interval;
+    arpeggioFrameTimer = 0;
+    currentArpeggioFrame = 0;
+    currentNumNoteBuffer = 1;
+    noteBuffer[0] = noteNumber;
+}
+
+void TonalVoice::addArpeggioNoteAscending(int midiNoteNumber)
+{
+    if (currentNumNoteBuffer >= 10) {
+        return;
+    }
+    int i;
+    for (i = 0; i<currentNumNoteBuffer; i++) {
+        if (noteBuffer[i] > midiNoteNumber) break;
+    }
+    
+    pushNoteBuffer(i, midiNoteNumber);
+    
+    currentNumNoteBuffer++;
+}
+
+void TonalVoice::addArpeggioNoteDescending(int midiNoteNumber)
+{
+    if (currentNumNoteBuffer >= 10) {
+        return;
+    }
+    int i;
+    for (i = 0; i<currentNumNoteBuffer; i++) {
+        if (noteBuffer[i] < midiNoteNumber) break;
+    }
+    
+    pushNoteBuffer(i, midiNoteNumber);
+    
+    currentNumNoteBuffer++;
+}
+
+/// Returns number of remaining arpeggio notes
+int TonalVoice::removeArpeggioNote(int midiNoteNumber)
+{
+    if (currentNumNoteBuffer==0) {
+        return 0;
+    }
+    
+    int i;
+    for (i=0; i<currentNumNoteBuffer; i++) {
+        if (noteBuffer[i] == midiNoteNumber) break;
+    }
+    if (i == currentNumNoteBuffer) { // not found
+        return currentNumNoteBuffer;
+    }
+    shiftNoteBuffer(i);
+    currentNumNoteBuffer--;
+    
+    return currentNumNoteBuffer;
+}
+
+void TonalVoice::pushNoteBuffer(int index, int value) {
+    for (int i=9; i>index; i--) {
+        noteBuffer[i] = noteBuffer[i-1];
+    }
+    noteBuffer[index] = value;
+}
+
+void TonalVoice::shiftNoteBuffer(int index) {
+    for (int i=index; i<9; i++) {
+        noteBuffer[i] = noteBuffer[i+1];
+    }
+}
+
 double TonalVoice::noteNoToHeltzDouble (double noteNoInDouble, const double frequencyOfA)
 {
     return frequencyOfA * std::pow (2.0, (noteNoInDouble - 69) / 12.0);