Feature: Add a knob to control the output level

plugins/YKChorus/ChorusEngine.h

@@ -34,6 +34,7 @@ class ChorusEngine {
     Chorus *chorus1R;
     Chorus *chorus2L;
     Chorus *chorus2R;
+    float c_ratio;
 
     DCBlock *dcBlock1L;
     DCBlock *dcBlock1R;
@@ -81,6 +82,9 @@ class ChorusEngine {
         chorus2L->setLfoRate(rate);
         chorus2R->setLfoRate(rate);
     }
+    void setChorusLevel(float rate) {
+        c_ratio=rate;
+    }
 
     void setUpChorus(float sampleRate) {
         chorus1L = new Chorus(sampleRate, 1.0f, 0.5f, 7.0f);
@@ -106,8 +110,8 @@ class ChorusEngine {
             dcBlock2L->tick(&resultL, 0.01f);
             dcBlock2R->tick(&resultR, 0.01f);
         }
-        *sampleL = *sampleL + resultL * 1.4f;
-        *sampleR = *sampleR + resultR * 1.4f;
+        *sampleL = *sampleL + resultL * c_ratio;
+        *sampleR = *sampleR + resultR * c_ratio;
     }
 };
 

plugins/YKChorus/PluginUIYKChorus.cpp

@@ -50,6 +50,15 @@ PluginUIYKChorus::PluginUIYKChorus()
     fKnobRate2->setDefault(5.0f);
     fKnobRate2->setCallback(this);
 
+    // Knob Level 
+    fKnobLevel = new ImageKnob(this, knobImage, ImageKnob::Vertical);
+    fKnobLevel->setId(PluginYKChorus::paramChorusLevel);
+    fKnobLevel->setImageLayerCount(30);
+    fKnobLevel->setAbsolutePos(60, 130);
+    fKnobLevel->setRange(0.0f, 1.5f);
+    fKnobLevel->setDefault(0.9f);
+    fKnobLevel->setCallback(this);
+
     // Switches
 
     // Switch Chorus 1 On/Off
@@ -87,6 +96,9 @@ void PluginUIYKChorus::parameterChanged(uint32_t index, float value) {
         case PluginYKChorus::paramChorus2LfoRate:
             fKnobRate2->setValue(value);
             break;
+        case PluginYKChorus::paramChorusLevel:
+            fKnobLevel->setValue(value);
+            break;
     }
 }
 

plugins/YKChorus/PluginUIYKChorus.hpp

@@ -56,7 +56,7 @@ class PluginUIYKChorus : public UI,
     Image fImgBackground;
 
     ScopedPointer<ImageSwitch> fSwitchChorus1Enable, fSwitchChorus2Enable;
-    ScopedPointer<ImageKnob> fKnobRate1, fKnobRate2;
+    ScopedPointer<ImageKnob> fKnobRate1, fKnobRate2, fKnobLevel;
 
     DISTRHO_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(PluginUIYKChorus)
 };

plugins/YKChorus/PluginYKChorus.cpp

@@ -76,6 +76,13 @@ void PluginYKChorus::initParameter(uint32_t index, Parameter& parameter) {
             parameter.ranges.max = 10.0f;
             parameter.ranges.def = 8.3f;
             break;
+        case paramChorusLevel:
+            parameter.name = "Chorus 2 Level";
+            parameter.symbol = "chorus_2_level";
+            parameter.ranges.min = 0.1f;
+            parameter.ranges.max = 1.5f;
+            parameter.ranges.def = 0.9f;
+            break;
     }
 }
 
@@ -136,6 +143,9 @@ void PluginYKChorus::setParameterValue(uint32_t index, float value) {
         case paramChorus2LfoRate:
             cengine->setChorus2LfoRate(value / 10.0f);
             break;
+        case paramChorusLevel:
+            cengine->setChorusLevel(value / 1.0f);
+            break;
     }
 }
 
@@ -151,18 +161,21 @@ void PluginYKChorus::loadProgram(uint32_t index) {
             setParameterValue(paramChorus2Enable, 0.0f);
             setParameterValue(paramChorus1LfoRate, 5.0f);
             setParameterValue(paramChorus2LfoRate, 8.3f);
+            setParameterValue(paramChorusLevel, 0.9f);
             break;
         case 1:
             setParameterValue(paramChorus1Enable, 0.0f);
             setParameterValue(paramChorus2Enable, 1.0f);
             setParameterValue(paramChorus1LfoRate, 5.0f);
             setParameterValue(paramChorus2LfoRate, 8.3f);
+            setParameterValue(paramChorusLevel, 0.9f);            
             break;
         case 2:
             setParameterValue(paramChorus1Enable, 1.0f);
             setParameterValue(paramChorus2Enable, 1.0f);
             setParameterValue(paramChorus1LfoRate, 5.0f);
             setParameterValue(paramChorus2LfoRate, 8.3f);
+            setParameterValue(paramChorusLevel, 0.9f);            
             break;
     }
 }

plugins/YKChorus/PluginYKChorus.hpp

@@ -33,6 +33,7 @@ class PluginYKChorus : public Plugin {
         paramChorus2Enable,
         paramChorus1LfoRate,
         paramChorus2LfoRate,
+        paramChorusLevel,
         paramCount
     };