modwheel

plugin/chassis.cpp

@@ -39,8 +39,8 @@ void Chassis::activate() {
     // calculate filter coefficients and stuff
     printf("called activate()\n");
 
-    for (uint8_t i=0; i<104; i++) {
-        s.pitchCV[i] = (261.63 * powf(2, (i-24) / 12.0f)) / sampleRate;
+    for (uint8_t i = 0; i < 104; i++) {
+        s.pitchCV[i] = (261.63 * powf(2, (i - 24) / 12.0f)) / sampleRate;
     }
 }
 
@@ -132,13 +132,17 @@ void Chassis::run(const float **, float **outputs, uint32_t frames, const MidiEv
             for (uint32_t i = 0; i < NUM_VOICES; i++) {
                 s.voice[i].calcPitch(s);
 
-                    switch(s.patchRam.switch1 & 0x03) {
-        case 1: s.voice[i].omega /= 4; break;
-        case 2: s.voice[i].omega /= 2;
-        default: break;
-    }
+                switch (s.patchRam.switch1 & 0x03) {
+                    case 1:
+                        s.voice[i].omega /= 4;
+                        break;
+                    case 2:
+                        s.voice[i].omega /= 2;
+                    default:
+                        break;
+                }
 
-                //printf("voice %d note = %02x ff71 = %04x\n",i, s.voice[i].note, s.voice[i].ff71 );
+                // printf("voice %d note = %02x ff71 = %04x\n",i, s.voice[i].note, s.voice[i].ff71 );
                 s.voice[i].gate(s);
             }
         }

plugin/chassis.hpp

@@ -61,6 +61,8 @@ class Chassis : public Plugin {
         paramSustain,
         paramRelease,
 
+        paramModWheel,
+
         parameterCount
     };
 

plugin/parameters.cpp

@@ -244,6 +244,16 @@ void Chassis::initParameter(uint32_t index, Parameter &parameter) {
             parameter.ranges.def = 40.0f;
             parameter.midiCC = 26;
             break;
+
+        case paramModWheel:
+            parameter.hints = kParameterIsAutomatable | kParameterIsHidden;
+            parameter.name = "Mod wheel";
+            parameter.symbol = "ch_modwheel";
+            parameter.ranges.min = 0.0f;
+            parameter.ranges.max = 127.0f;
+            parameter.ranges.def = 0.0f;
+            parameter.midiCC = 1;
+            break;
     }
     // chorus, porta, bend range, key mode still to do
 }
@@ -265,7 +275,7 @@ void Chassis::setParameterValue(uint32_t index, float value) {
             s.patchRam.vcoLfo = value;
             break;
         case paramPWMLFO:
-            s.patchRam.pwmLfo = value/1.27;
+            s.patchRam.pwmLfo = value / 1.27;
             break;
         case paramSub:
             s.patchRam.sub = value;
@@ -307,7 +317,6 @@ void Chassis::setParameterValue(uint32_t index, float value) {
             s.patchRam.env_r = value;
             break;
 
-
         // switch 1 params
         case paramVCORange:  // bits 0-2 of switch 1
             // doesn't look great in Carla because of odd behaviour with small integer knobs
@@ -347,6 +356,10 @@ void Chassis::setParameterValue(uint32_t index, float value) {
             s.patchRam.switch2 &= 0xf3;
             s.patchRam.switch2 |= (int)value << 2;
             break;
+
+        case paramModWheel:
+            s.ff64 = (int)value << 1;
+            break;
     }
 }
 

plugin/voice.hpp

@@ -34,7 +34,7 @@ class Voice {
     void run(Synth &s, float *buffer, uint32_t samples);
     void gate(Synth &s);
     void calcPitch(Synth &s);
-    uint16_t ff71 = 0; // stores pitch + fraction
+    uint16_t ff71 = 0;  // stores pitch + fraction
 
     float omega;
 
@@ -107,6 +107,7 @@ class Synth {
     uint32_t framesLeft = 0;
 
     bool keyon;
+    uint8_t ff63 = 0;
 
     // RAM from ff00h to ffffh is cleared to zero
     // this is in the startup routine at 0280h
@@ -120,9 +121,9 @@ class Synth {
     uint16_t ff56 = 0;  // LFO Delay envelope
     uint16_t ff5a = 0;  // LFO Delay holdoff
     uint8_t ff64 = 0;   // LFO mod sens amount
-    uint8_t ff6e = 0; // fractional pitch temp
+    uint8_t ff6e = 0;   // fractional pitch temp
     uint16_t ff6f = 0;  // computed pitch amount
-    //uint16_t ff71 = 0; // unsure, to do with pitch
+    // uint16_t ff71 = 0; // unsure, to do with pitch
 
     // okay, not the greatest, this right here
     // this struct contains the bytes that make up a Juno 106 patch in
@@ -184,7 +185,7 @@ class Synth {
         0x0b18, 0x0b7c, 0x0be0, 0x0c58, 0x0cd0, 0x0d48, 0x0dde, 0x0e74, 0x0f0a,
         0x0fa0, 0x1000};
 
-            uint16_t attackTable[128] = {
+    uint16_t attackTable[128] = {
         0x4000, 0x2000, 0x1000, 0x0aaa, 0x0800, 0x0666, 0x0555, 0x0492, 0x0400,
         0x038e, 0x0333, 0x02e9, 0x02ab, 0x0276, 0x0249, 0x0222, 0x0200, 0x01e2,
         0x01c7, 0x01af, 0x0199, 0x0186, 0x0174, 0x0164, 0x0155, 0x0148, 0x013b,