Created droplet system with noise droplet

Makefile

@@ -1,6 +1,6 @@
-TARGET = main
+TARGET = cascade
 
-CPP_SOURCES = src/main.cpp src/util.cpp src/menu.cpp
+CPP_SOURCES = src/main.cpp src/util.cpp src/menu.cpp src/droplets/noise_droplet.cpp
 
 LIBDAISY_DIR = ./lib/libDaisy
 DAISYSP_DIR = ./lib/daisySP

src/droplets/droplet.h

@@ -0,0 +1,14 @@
+#pragma once
+
+#ifndef CASCADE_DROPLETS_DROPLET_H_
+#define CASCADE_DROPLETS_DROPLET_H_
+
+class Droplet {
+ public:
+  virtual ~Droplet() {};
+  virtual void Control(float, float, float, float)=0;
+  virtual void Process(float**, float**, size_t)=0;
+  virtual void Draw(int*, int, int)=0;
+};
+
+#endif // CASCADE_DROPLETS_DROPLET_H_

src/droplets/noise_droplet.cpp

@@ -0,0 +1,16 @@
+#include "noise_droplet.h"
+
+NoiseDroplet::NoiseDroplet(float sample_rate) {
+  noise.Init();
+}
+
+void NoiseDroplet::Control(float ctr_1, float ctr_2, float ctr_3, float ctr_4) {}
+void NoiseDroplet::Process(float** in, float** out, size_t size) {
+  for (size_t i = 0; i < size; i += 2) {
+    float sig = noise.Process();
+    for (size_t chn = 0; chn < 4; chn++) {
+      out[chn][i] = sig;
+    }
+  }
+}
+void NoiseDroplet::Draw(int* d, int width, int height) {}

src/droplets/noise_droplet.h

@@ -0,0 +1,21 @@
+#pragma once
+
+#ifndef CASCADE_DROPLETS_NOISE_DROPLET_H_
+#define CASCADE_DROPLETS_NOISE_DROPLET_H_
+
+#include "daisysp.h"
+#include "daisy_patch.h"
+
+#include "droplet.h"
+
+class NoiseDroplet: public Droplet {
+ private:
+  daisysp::WhiteNoise noise;
+ public:
+  NoiseDroplet(float);
+  void Control(float, float, float, float);
+  void Process(float**, float**, size_t);
+  void Draw(int*, int, int);
+};
+
+#endif // CASCADE_DROPLETS_NOISE_DROPLET_H_

src/main.cpp

@@ -6,16 +6,23 @@
 #include "main.h"
 #include "util.h"
 #include "menu.h"
+#include "droplets/droplet.h"
+#include "droplets/noise_droplet.h"
 
 using namespace daisy;
 using namespace daisysp;
 
 DaisyPatch patch;
 Menu menu(&patch);
+Droplet* droplet;
 
 int main(void) {
   patch.Init();
+  float samplerate = patch.AudioSampleRate();
+  droplet = new NoiseDroplet(samplerate);
   patch.StartAdc();
+  patch.StartAudio(AudioThrough);
+  
   while(true) {
     ProcessControls();
     ProcessOled();
@@ -51,3 +58,9 @@ void ProcessOled() {
   }
   patch.display.Update();
 }
+
+static void AudioThrough(float **in, float **out, size_t size) {
+  patch.UpdateAnalogControls();
+  droplet->Process(in, out, size);
+}
+

src/main.h

@@ -1,3 +1,4 @@
 void ProcessControls();
 void ProcessOled();
 void ProcessOutputs();
+static void AudioThrough(float **, float **, size_t);

src/menu.cpp

@@ -16,7 +16,7 @@ const std::string MENU_ITEMS[] = {"VCO",
 const int MENU_SIZE = sizeof(MENU_ITEMS)/sizeof(*MENU_ITEMS);
 const int MAX_CHAR_LENGTH = 15;
 const int MENU_X[] = {0,  5,  10,  5,  0};
-const int MENU_Y[] = {0, 11, 22, 41, 52};
+const int MENU_Y[] = {0, 11,  22, 41, 52};
 int selectedMenuItem = 0;
 bool inMenu = false;
 
@@ -57,7 +57,7 @@ void Menu::CreateMenuItem(std::string text, int position, bool highlighted) {
 void Menu::ProcessMenuOled() {
   CreateMenuItem(FilterMenuText(selectedMenuItem-2), 1, false);
   CreateMenuItem(FilterMenuText(selectedMenuItem-1), 2, false);
-  CreateMenuItem(FilterMenuText(selectedMenuItem), 3, true);
+  CreateMenuItem(FilterMenuText(selectedMenuItem),   3, true);
   CreateMenuItem(FilterMenuText(selectedMenuItem+1), 4, false);
   CreateMenuItem(FilterMenuText(selectedMenuItem+2), 5, false);
 }