feat: all filter types

docs/Resources.md

@@ -36,6 +36,3 @@ for (n = 0; n < totalSamples; n++) {
  
 
 We can replace the sin function with any periodic function that returns an amplitude for a given phase angle. Thus, this small piece of code can be used to produce a very wide range of sounds. Functionally, it is the software equivalent of an oscillator, the basic building block of almost all synthesizers.
-
-
-https://ccrma.stanford.edu/software/stk/index.html

inc/BandPassFilter.h

@@ -0,0 +1,17 @@
+#pragma once
+
+#include "Filter.h"
+
+class BandPassFilter : public Filter {
+  protected:
+    float GetSampleForFilterType() override;
+
+  public:
+    BandPassFilter();
+    BandPassFilter(Filter* filter);
+    BandPassFilter(float freq, float res, float q);
+    ~BandPassFilter();
+    bool IsSameFilterType(FilterType type) override { return type == BandPass; };
+};
+
+

inc/Filter.h

@@ -34,39 +34,3 @@ class Filter : public IEffect {
     float GetPeakGain() { return m_drive; }
     virtual bool IsSameFilterType(FilterType type) { return false; };
 };
-
-class BandPassFilter : public Filter {
-  protected:
-    float GetSampleForFilterType() override;
-
-  public:
-    BandPassFilter();
-    BandPassFilter(Filter* filter);
-    BandPassFilter(float freq, float res, float q);
-    ~BandPassFilter();
-    bool IsSameFilterType(FilterType type) override { return type == BandPass; };
-};
-
-class HighPassFilter : public Filter {
-  protected:
-    float GetSampleForFilterType() override;
-
-  public:
-    HighPassFilter();
-    HighPassFilter(Filter* filter);
-    HighPassFilter(float freq, float res, float q);
-    ~HighPassFilter();
-    bool IsSameFilterType(FilterType type) override { return type == HighPass; };
-};
-
-class LowPassFilter : public Filter {
-  protected:
-    float GetSampleForFilterType() override;
-
-  public:
-    LowPassFilter();
-    LowPassFilter(Filter* filter);
-    LowPassFilter(float freq, float res, float q);
-    ~LowPassFilter();
-    bool IsSameFilterType(FilterType type) override { return type == LowPass; };
-};

inc/FilterFactory.h

@@ -1,5 +1,8 @@
 #pragma once
 #include "Filter.h"
+#include "LowPassFilter.h"
+#include "BandPassFilter.h"
+#include "HighPassFilter.h"
 
 struct FilterFactory {
     static Filter* CreateFilter(Filter* old_filter, FilterType new_type) {

inc/HighPassFilter.h

@@ -0,0 +1,14 @@
+#pragma once
+#include "Filter.h"
+
+class HighPassFilter : public Filter {
+  protected:
+    float GetSampleForFilterType() override;
+
+  public:
+    HighPassFilter();
+    HighPassFilter(Filter* filter);
+    HighPassFilter(float freq, float res, float q);
+    ~HighPassFilter();
+    bool IsSameFilterType(FilterType type) override { return type == HighPass; };
+};

inc/LowPassFilter.h

@@ -0,0 +1,16 @@
+#pragma once
+
+#include "Filter.h"
+
+class LowPassFilter : public Filter {
+  protected:
+    float GetSampleForFilterType() override;
+
+  public:
+    LowPassFilter();
+    LowPassFilter(Filter* filter);
+    LowPassFilter(float freq, float res, float q);
+    ~LowPassFilter();
+    bool IsSameFilterType(FilterType type) override { return type == LowPass; };
+};
+

src/BandPassFilter.cpp

@@ -1,4 +1,4 @@
-#include "Filter.h"
+#include "BandPassFilter.h"
 #include "Settings.h"
 
 BandPassFilter::BandPassFilter() {

src/HighPassFilter.cpp

@@ -1,4 +1,4 @@
-#include "Filter.h"
+#include "HighPassFilter.h"
 #include "Settings.h"
 
 HighPassFilter::HighPassFilter() {

src/LowPassFilter.cpp

@@ -1,4 +1,4 @@
-#include "Filter.h"
+#include "LowPassFilter.h"
 #include "Settings.h"
 
 LowPassFilter::LowPassFilter() {

src/Synth.cpp

@@ -4,6 +4,7 @@
 #include "Logger.h"
 #include "OscillatorType.h"
 #include "Settings.h"
+#include "LowPassFilter.h"
 
 Synth::Synth(/* args */) {
     m_lfo = new LFO();