wip: filter constructors

inc/BandPassFilter.h

@@ -1,12 +1,13 @@
 #pragma once
 #include "Filter.h"
 
-class BandPassFilter: public Filter
-{
-private:
+class BandPassFilter : public Filter {
+  private:
     void calculate_coefficients() override;
-public:
+
+  public:
+    BandPassFilter(Filter* filter);
+    BandPassFilter(float freq, float res, float q);
     BandPassFilter(/* args */);
     ~BandPassFilter();
 };
-

inc/Filter.h

@@ -1,18 +1,16 @@
 #pragma once
 #include "Effect.h"
 
-class Filter: public Effect
-{
-    
+class Filter : public Effect {
 
-protected:
+  protected:
     struct Normals {
         float V;
         float K;
     };
 
-    float m_freq; // cutoff frequency
-    float m_q; // filter quantity (resonance)
+    float m_freq;  // cutoff frequency
+    float m_q;     // filter quantity (resonance)
     float m_order; // filter order (peakGain)
     /* todo: filter adsr */
     float m_norm;
@@ -20,7 +18,8 @@ protected:
     float m_z1, m_z2;
     Normals calculate_normals();
     virtual void calculate_coefficients(){};
-public:
+
+  public:
     Filter(/* args */);
     ~Filter();
     void Trigger() override;
@@ -28,5 +27,7 @@ public:
     float Process(float in);
     void Process(std::vector<float>& samples) override;
     void SetParameters(float freq, float res, float q);
+    float GetFreq() { return m_freq; }
+    float GetRes() { return m_q; }
+    float GetPeakGain() { return m_norm; }
 };
-

inc/HighPassFilter.h

@@ -1,12 +1,13 @@
 #pragma once
 #include "Filter.h"
 
-class HighPassFilter: public Filter
-{
-private:
+class HighPassFilter : public Filter {
+  private:
     void calculate_coefficients() override;
-public:
-    HighPassFilter(/* args */);
+
+  public:
+    HighPassFilter();
+    HighPassFilter(Filter* filter);
+    HighPassFilter(float freq, float res, float q);
     ~HighPassFilter();
 };
-

inc/LowPassFilter.h

@@ -2,12 +2,13 @@
 
 #include "Filter.h"
 
-class LowPassFilter: public Filter
-{
-protected:
+class LowPassFilter : public Filter {
+  protected:
     void calculate_coefficients() override;
-public:
-    LowPassFilter(/* args */);
+
+  public:
+    LowPassFilter();
+    LowPassFilter(Filter* filter);
+    LowPassFilter(float freq, float res, float q);
     ~LowPassFilter();
 };
-