From f7cdd163767354fdc40ecd6019829acb7f0d9e47 Mon Sep 17 00:00:00 2001
From: Martmists <martmists@gmail.com>
Date: Wed, 28 Jul 2021 00:54:15 +0200
Subject: [PATCH] Reverberation

---
 CMakeLists.txt                |  1 +
 src/effects/Reverberation.cpp | 70 +++++++++++++++++++++++++++++++++++
 src/effects/Reverberation.h   | 35 ++++++++++++++++++
 src/utils/CRevModel.cpp       | 14 ++++++-
 src/utils/CRevModel.h         |  1 +
 5 files changed, 120 insertions(+), 1 deletion(-)
 create mode 100644 src/effects/Reverberation.cpp
 create mode 100644 src/effects/Reverberation.h

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 37b7739..52ab6a0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -20,6 +20,7 @@ set(FILES
 
         # Effects
         src/effects/Cure.cpp
+        src/effects/Reverberation.cpp
         src/effects/TubeSimulator.cpp
 
         # Utils
diff --git a/src/effects/Reverberation.cpp b/src/effects/Reverberation.cpp
new file mode 100644
index 0000000..7fb6739
--- /dev/null
+++ b/src/effects/Reverberation.cpp
@@ -0,0 +1,70 @@
+//
+// Created by mart on 7/28/21.
+//
+
+#include "Reverberation.h"
+#include "../constants.h"
+
+Reverberation::Reverberation() {
+    this->roomsize = 0.f;
+    this->width = 0.f;
+    this->damp = 0.f;
+    this->wet = 0.f;
+    this->dry = 0.5f;
+
+    this->model.SetRoomSize(0.f);
+    this->model.SetWidth(0.f);
+    this->model.SetDamp(0.f);
+    this->model.SetWet(0.f);
+    this->model.SetDry(0.5f);
+
+    this->samplerate = DEFAULT_SAMPLERATE;
+    this->enabled = false;
+}
+
+void Reverberation::Reset() {
+    this->model.Reset();
+}
+
+void Reverberation::Process(float *buffer, uint32_t size) {
+    if (this->enabled) {
+        this->model.ProcessReplace(buffer, &buffer[1], size);
+    }
+}
+
+void Reverberation::SetEnable(bool enable) {
+    if (!this->enabled && enable) {
+        Reset();
+    }
+    this->enabled = enable;
+}
+
+void Reverberation::SetRoomSize(float value) {
+    this->roomsize = value;
+    this->model.SetRoomSize(value);
+}
+
+void Reverberation::SetDamp(float value) {
+    this->damp = value;
+    this->model.SetDamp(value);
+}
+
+void Reverberation::SetWet(float value) {
+    this->wet = value;
+    this->model.SetWet(value);
+}
+
+void Reverberation::SetDry(float value) {
+    this->dry = value;
+    this->model.SetDry(value);
+}
+
+void Reverberation::SetWidth(float value) {
+    this->width = value;
+    this->model.SetWidth(value);
+}
+
+void Reverberation::SetSamplingRate(uint32_t value) {
+    this->samplerate = value;
+    this->model.Reset();
+}
diff --git a/src/effects/Reverberation.h b/src/effects/Reverberation.h
new file mode 100644
index 0000000..3dfc903
--- /dev/null
+++ b/src/effects/Reverberation.h
@@ -0,0 +1,35 @@
+//
+// Created by mart on 7/28/21.
+//
+
+#pragma once
+
+#include "../utils/CRevModel.h"
+
+class Reverberation {
+public:
+    Reverberation();
+
+    void Reset();
+    void Process(float* buffer, uint32_t size);
+
+    void SetEnable(bool enable);
+    void SetRoomSize(float value);
+    void SetDamp(float value);
+    void SetWet(float value);
+    void SetDry(float value);
+    void SetWidth(float value);
+    void SetSamplingRate(uint32_t value);
+
+    float roomsize;
+    float width;
+    float damp;
+    float wet;
+    float dry;
+    CRevModel model;
+    uint32_t samplerate;
+    bool enabled;
+};
+
+
+
diff --git a/src/utils/CRevModel.cpp b/src/utils/CRevModel.cpp
index a3993e6..8418aea 100644
--- a/src/utils/CRevModel.cpp
+++ b/src/utils/CRevModel.cpp
@@ -144,6 +144,18 @@ void CRevModel::UpdateCoeffs() {
     }
 }
 
+void CRevModel::Reset() {
+    for (int i=0; i<8; i++) {
+        combL[i].Mute();
+        combR[i].Mute();
+    }
+
+    for(int i=0; i<4; i++) {
+        allpassL[i].Mute();
+        allpassR[i].Mute();
+    }
+}
+
 void CRevModel::SetRoomSize(float value) {
     roomsize = (value*0.28f) + 0.7f;
     UpdateCoeffs();
@@ -193,7 +205,7 @@ float CRevModel::GetWidth() {
     return width;
 }
 
-float CRevModel::GetMode() {
+int CRevModel::GetMode() {
     if (mode == 1) {
         return 1.f;
     } else {
diff --git a/src/utils/CRevModel.h b/src/utils/CRevModel.h
index 30b3209..7c98cc6 100644
--- a/src/utils/CRevModel.h
+++ b/src/utils/CRevModel.h
@@ -15,6 +15,7 @@ public:
     void Mute();
     void ProcessReplace(float *bufL, float *bufR, uint32_t size);
     void UpdateCoeffs();
+    void Reset();
 
     void SetRoomSize(float value);
     void SetDamp(float value);