wip: synth api && adder

src/Adder.cpp

@@ -0,0 +1,22 @@
+#include "Adder.h"
+
+std::vector<float> & Adder::SumOscillators(const std::vector<Oscillator*> & oscillators, float duration)
+{
+    size_t sample_count = (size_t)(duration * SAMPLE_RATE);
+
+    std::vector<float> output;// = new std::vector<float>();
+    output.reserve(sample_count);
+
+    for (size_t i = 0; i < sample_count; i++) 
+    {
+        float sample = 0.0f;
+        for (Oscillator* osc : oscillators)
+        {
+            sample += osc->GenerateSample(duration);
+        }
+
+        output.push_back(sample);
+    }
+
+    return output;
+}

src/Synth.cpp

@@ -2,44 +2,22 @@
 #include "Settings.h"
 #include "KeyBoard.h"
 #include "OscillatorType.h"
-#include "Note.h"
 
-std::vector<float> & Synth::sum_oscillators(float duration)
-{
-    size_t sample_count = (size_t)(duration * SAMPLE_RATE);
-
-    std::vector<float> output;// = new std::vector<float>();
-    output.reserve(sample_count);
-
-    for (size_t i = 0; i < sample_count; i++) 
-    {
-        float sample = 0.0f;
-        for (Oscillator& osc : m_oscillators)
-        {
-            sample += osc.GenerateSample(duration);
-        }
-
-        output.push_back(sample);
-    }
-
-    return output;
-}
-
-std::vector<float> & Synth::note(int semitone, float beats) 
+std::vector<float> & Synth::get_note(int semitone, float beats) 
 {
     float hz = KeyBoard::GetHzBySemitone(semitone);
     float duration = beats * BEAT_DURATION;
     
     // will change after oscillator starts to be more autonomous
-    for (size_t i = 0; i < m_oscillators.size(); i++) {
-        m_oscillators[i].SetFreq(hz);
+    for (auto osc : m_oscillators) {
+        osc->SetFreq(hz);
     }
 
-    return sum_oscillators(duration);
+    return m_adder.SumOscillators(m_oscillators, duration); //todo: add other pipeline steps (e.g ADSR, Filters, FX);
 }
 
-std::vector<float> & Synth::GetNoteSound(Note input) {
+void Synth::ProduceNoteSound(Note input) {
     float length = 1.f / input.length;
     int semitone_shift = KeyBoard::GetSemitoneShift(input.name);
-    return note(semitone_shift, length);
+    m_out_signal = get_note(semitone_shift, length);
 }