From 2d185130a467dfeaa2b1716acfd8a54de713289e Mon Sep 17 00:00:00 2001
From: Iscle <albertiscle9@gmail.com>
Date: Mon, 19 Sep 2022 04:30:07 +0200
Subject: [PATCH] Update

---
 src/cpp/viper/Effect.cpp               |   1 -
 src/cpp/viper/ViPER.cpp                |  40 ------
 src/cpp/viper/effects/DiffSurround.cpp |   1 -
 src/cpp/viper/effects/ViPERBass.cpp    |  14 +-
 src/cpp/viper/effects/ViPERClarity.cpp |  96 ++++++--------
 src/cpp/viper/effects/ViPERClarity.h   |  26 ++--
 src/cpp/viper/utils/AdaptiveBuffer.cpp |   1 -
 src/cpp/viper/utils/Biquad.cpp         |  12 +-
 src/cpp/viper/utils/Biquad.h           |   6 +-
 src/cpp/viper/utils/FIR.cpp            |   4 +-
 src/cpp/viper/utils/FIR.h              |   4 +-
 src/cpp/viper/utils/HighShelf.cpp      |  12 +-
 src/cpp/viper/utils/HighShelf.h        |   8 +-
 src/cpp/viper/utils/Polyphase.cpp      | 175 ++++++++++++++++++++++++-
 src/cpp/viper/utils/Polyphase.h        |   4 +-
 src/cpp/viper/utils/TimeConstDelay.cpp |   1 -
 src/cpp/viper/utils/WaveBuffer.cpp     |   1 -
 17 files changed, 254 insertions(+), 152 deletions(-)

diff --git a/src/cpp/viper/Effect.cpp b/src/cpp/viper/Effect.cpp
index d065bc3..fe4d8fc 100644
--- a/src/cpp/viper/Effect.cpp
+++ b/src/cpp/viper/Effect.cpp
@@ -28,7 +28,6 @@ Effect::Effect() {
 
 Effect::~Effect() {
     delete this->buffer;
-    this->buffer = nullptr;
 }
 
 int32_t Effect::process(audio_buffer_s *in, audio_buffer_s *out) {
diff --git a/src/cpp/viper/ViPER.cpp b/src/cpp/viper/ViPER.cpp
index 627a832..8bc5dc8 100644
--- a/src/cpp/viper/ViPER.cpp
+++ b/src/cpp/viper/ViPER.cpp
@@ -67,7 +67,6 @@ ViPER::ViPER() {
     this->viperBass->Reset();
 
     this->viperClarity = new ViPERClarity();
-    this->viperClarity->SetEnable(false);
     this->viperClarity->SetSamplingRate(this->sampleRate);
     this->viperClarity->Reset();
 
@@ -114,65 +113,26 @@ ViPER::ViPER() {
 
 ViPER::~ViPER() {
     delete this->adaptiveBuffer;
-    this->adaptiveBuffer = nullptr;
-
     delete this->waveBuffer;
-    this->waveBuffer = nullptr;
-
     delete this->convolver;
-    this->convolver = nullptr;
-
     delete this->vhe;
-    this->vhe = nullptr;
-
     delete this->viperDdc;
-    this->viperDdc = nullptr;
-
     delete this->spectrumExtend;
-    this->spectrumExtend = nullptr;
-
     delete this->iirFilter;
-    this->iirFilter = nullptr;
-
     delete this->colorfulMusic;
-    this->colorfulMusic = nullptr;
-
     delete this->reverberation;
-    this->reverberation = nullptr;
-
     delete this->playbackGain;
-    this->playbackGain = nullptr;
-
     delete this->fetCompressor;
-    this->fetCompressor = nullptr;
-
     delete this->dynamicSystem;
-    this->dynamicSystem = nullptr;
-
     delete this->viperBass;
-    this->viperBass = nullptr;
-
     delete this->viperClarity;
-    this->viperClarity = nullptr;
-
     delete this->diffSurround;
-    this->diffSurround = nullptr;
-
     delete this->cure;
-    this->cure = nullptr;
-
     delete this->tubeSimulator;
-    this->tubeSimulator = nullptr;
-
     delete this->analogX;
-    this->analogX = nullptr;
-
     delete this->speakerCorrection;
-    this->speakerCorrection = nullptr;
-
     for (auto &softwareLimiter: this->softwareLimiters) {
         delete softwareLimiter;
-        softwareLimiter = nullptr;
     }
 }
 
diff --git a/src/cpp/viper/effects/DiffSurround.cpp b/src/cpp/viper/effects/DiffSurround.cpp
index ba2974c..ab43fe9 100644
--- a/src/cpp/viper/effects/DiffSurround.cpp
+++ b/src/cpp/viper/effects/DiffSurround.cpp
@@ -14,7 +14,6 @@ DiffSurround::DiffSurround() {
 DiffSurround::~DiffSurround() {
     for (auto &buffer : this->buffers) {
         delete buffer;
-        buffer = nullptr;
     }
 }
 
diff --git a/src/cpp/viper/effects/ViPERBass.cpp b/src/cpp/viper/effects/ViPERBass.cpp
index df7390c..da90179 100644
--- a/src/cpp/viper/effects/ViPERBass.cpp
+++ b/src/cpp/viper/effects/ViPERBass.cpp
@@ -21,16 +21,9 @@ ViPERBass::ViPERBass() {
 
 ViPERBass::~ViPERBass() {
     delete this->polyphase;
-    this->polyphase = nullptr;
-
     delete this->biquad;
-    this->biquad = nullptr;
-
     delete this->subwoofer;
-    this->subwoofer = nullptr;
-
     delete this->waveBuffer;
-    this->waveBuffer = nullptr;
 }
 
 void ViPERBass::Process(float *samples, uint32_t size) {
@@ -74,8 +67,9 @@ void ViPERBass::Process(float *samples, uint32_t size) {
 
                 if (this->polyphase->Process(samples, size) == size) {
                     for (uint32_t i = 0; i < size * 2; i += 2) {
-                        samples[i] += buffer[i / 2] * this->bassFactor;
-                        samples[i + 1] += buffer[i / 2] * this->bassFactor;
+                        float x = buffer[i / 2] * this->bassFactor;
+                        samples[i] += x;
+                        samples[i + 1] += x;
                     }
                     this->waveBuffer->PopSamples(size, true);
                 }
@@ -120,7 +114,7 @@ void ViPERBass::SetSamplingRate(uint32_t samplingRate) {
         this->invertedSamplingRate = 1.0f / (float) samplingRate;
         this->polyphase->SetSamplingRate(samplingRate);
         this->biquad->SetLowPassParameter(this->speaker, samplingRate, 0.53);
-        this->subwoofer->SetBassGain(samplingRate, this->bassFactor * 2.5);
+        this->subwoofer->SetBassGain(samplingRate, this->bassFactor * 2.5f);
     }
 }
 
diff --git a/src/cpp/viper/effects/ViPERClarity.cpp b/src/cpp/viper/effects/ViPERClarity.cpp
index 6763fd9..559bef0 100644
--- a/src/cpp/viper/effects/ViPERClarity.cpp
+++ b/src/cpp/viper/effects/ViPERClarity.cpp
@@ -2,87 +2,75 @@
 #include "../constants.h"
 
 ViPERClarity::ViPERClarity() {
-    for (int i = 0; i < 2; i++) {
-        this->hiShelf[i].SetFrequency(12000.f);
-//        this->hiShelf[i].SetQuality(100.f);
-        this->hiShelf[i].SetGain(1.f);
-        this->hiShelf[i].SetSamplingRate(DEFAULT_SAMPLERATE);
+    for (auto &highShelf : this->highShelf) {
+        highShelf.SetFrequency(12000.0);
+        highShelf.SetGain(1.0);
+        highShelf.SetSamplingRate(DEFAULT_SAMPLERATE);
     }
 
-    this->enabled = false;
     this->processMode = ClarityMode::NATURAL;
-    this->clarityGainPercent = 0.f;
-    this->samplerate = DEFAULT_SAMPLERATE;
-    Reset();
+    this->samplingRate = DEFAULT_SAMPLERATE;
+    this->clarityGainPercent = 0.0;
+    this->Reset();
 }
 
 void ViPERClarity::Process(float *samples, uint32_t size) {
-    if (this->enabled) {
-        switch (this->processMode) {
-            case ClarityMode::NATURAL: {
-                this->sharp.Process(samples, size);
-                break;
-            }
-            case ClarityMode::OZONE: {
-                for (int i = 0; i < size * 2; i++) {
-                    samples[i] = this->hiShelf[i % 2].Process(samples[i]);
-                }
-                break;
-            }
-            case ClarityMode::XHIFI: {
-                this->hifi.Process(samples, size);
-                break;
+    switch (this->processMode) {
+        case ClarityMode::NATURAL: {
+            this->noiseSharpening.Process(samples, size);
+            break;
+        }
+        case ClarityMode::OZONE: {
+            for (int i = 0; i < size * 2; i++) {
+                samples[i] = (float) this->highShelf[i % 2].Process(samples[i]);
             }
+            break;
+        }
+        case ClarityMode::XHIFI: {
+            this->hifi.Process(samples, size);
+            break;
         }
     }
 }
 
 void ViPERClarity::Reset() {
-    this->sharp.SetSamplingRate(this->samplerate);
-    this->sharp.Reset();
-    SetClarityToFilter();
-    for (int i = 0; i < 2; i++) {
-        this->hiShelf[i].SetFrequency(8250.f);
-//        this->hiShelf[i].SetQuality(100.f);
-        this->hiShelf[i].SetSamplingRate(DEFAULT_SAMPLERATE);
+    this->noiseSharpening.SetSamplingRate(this->samplingRate);
+    this->noiseSharpening.Reset();
+    this->SetClarityToFilter();
+    for (auto &highShelf : this->highShelf) {
+        highShelf.SetFrequency(8250.0);
+        highShelf.SetSamplingRate(this->samplingRate);
     }
-    this->hifi.SetSamplingRate(this->samplerate);
+    this->hifi.SetSamplingRate(this->samplingRate);
     this->hifi.Reset();
 }
 
 void ViPERClarity::SetClarity(float gainPercent) {
     this->clarityGainPercent = gainPercent;
     if (this->processMode != ClarityMode::OZONE) {
-        SetClarityToFilter();
+        this->SetClarityToFilter();
     } else {
-        Reset();
+        this->Reset();
     }
 }
 
 void ViPERClarity::SetClarityToFilter() {
-    this->sharp.SetGain(this->clarityGainPercent);
-    this->hiShelf[0].SetGain(this->clarityGainPercent + 1.f);
-    this->hiShelf[1].SetGain(this->clarityGainPercent + 1.f);
-    this->hifi.SetClarity(this->clarityGainPercent + 1.f);
+    this->noiseSharpening.SetGain(this->clarityGainPercent);
+    this->highShelf[0].SetGain(this->clarityGainPercent + 1.0f);
+    this->highShelf[1].SetGain(this->clarityGainPercent + 1.0f);
+    this->hifi.SetClarity(this->clarityGainPercent + 1.0f);
 }
 
-void ViPERClarity::SetEnable(bool enabled) {
-    this->enabled = enabled;
-    if (this->enabled) {
-        Reset();
+void ViPERClarity::SetProcessMode(ClarityMode processMode) {
+    if (this->processMode != processMode) {
+        this->processMode = processMode;
+        this->Reset();
     }
 }
 
-void ViPERClarity::SetProcessMode(ClarityMode mode) {
-    this->processMode = mode;
-    Reset();
-}
-
-void ViPERClarity::SetSamplingRate(uint32_t samplerate) {
-    this->samplerate = samplerate;
-    Reset();
-}
-
-ViPERClarity::~ViPERClarity() {
-
+void ViPERClarity::SetSamplingRate(uint32_t samplingRate) {
+    if (this->samplingRate != samplingRate) {
+        this->samplingRate = samplingRate;
+        this->Reset();
+    }
 }
diff --git a/src/cpp/viper/effects/ViPERClarity.h b/src/cpp/viper/effects/ViPERClarity.h
index fb207a2..8581224 100644
--- a/src/cpp/viper/effects/ViPERClarity.h
+++ b/src/cpp/viper/effects/ViPERClarity.h
@@ -5,31 +5,29 @@
 #include "../utils/HiFi.h"
 #include "../utils/HighShelf.h"
 
-enum ClarityMode {
-    NATURAL,
-    OZONE,
-    XHIFI
-};
-
 class ViPERClarity {
 public:
+    enum ClarityMode {
+        NATURAL,
+        OZONE,
+        XHIFI
+    };
+
     ViPERClarity();
-    ~ViPERClarity();
 
     void Process(float *samples, uint32_t size);
     void Reset();
     void SetClarity(float gainPercent);
     void SetClarityToFilter();
-    void SetEnable(bool enabled);
-    void SetProcessMode(ClarityMode mode);
-    void SetSamplingRate(uint32_t samplerate);
+    void SetProcessMode(ClarityMode processMode);
+    void SetSamplingRate(uint32_t samplingRate);
 
-    NoiseSharpening sharp;
-    HighShelf hiShelf[2];
+private:
+    NoiseSharpening noiseSharpening;
+    HighShelf highShelf[2];
     HiFi hifi;
-    bool enabled;
     ClarityMode processMode;
-    uint32_t samplerate;
+    uint32_t samplingRate;
     float clarityGainPercent;
 };
 
diff --git a/src/cpp/viper/utils/AdaptiveBuffer.cpp b/src/cpp/viper/utils/AdaptiveBuffer.cpp
index 66b4a50..77574d5 100644
--- a/src/cpp/viper/utils/AdaptiveBuffer.cpp
+++ b/src/cpp/viper/utils/AdaptiveBuffer.cpp
@@ -14,7 +14,6 @@ AdaptiveBuffer::AdaptiveBuffer(uint32_t channels, uint32_t length) {
 
 AdaptiveBuffer::~AdaptiveBuffer() {
     delete this->buffer;
-    this->buffer = nullptr;
 }
 
 void AdaptiveBuffer::FlushBuffer() {
diff --git a/src/cpp/viper/utils/Biquad.cpp b/src/cpp/viper/utils/Biquad.cpp
index a332280..ffac9f8 100644
--- a/src/cpp/viper/utils/Biquad.cpp
+++ b/src/cpp/viper/utils/Biquad.cpp
@@ -28,11 +28,11 @@ void Biquad::Reset() {
     this->y_2 = 0;
 }
 
-void Biquad::SetBandPassParameter(double frequency, double samplingRate, double qFactor) {
+void Biquad::SetBandPassParameter(double frequency, double samplingRate, float qFactor) {
     double x = (2.0 * M_PI * frequency) / samplingRate;
     double sinX = sin(x);
     double cosX = cos(x);
-    double y = sinX / (2.0 * qFactor);
+    double y = sinX / ((double) qFactor * 2.0);
 
     double a0 = 1.0 + y;
     double a1 = -cosX * 2.0;
@@ -56,7 +56,7 @@ void Biquad::SetCoeffs(double a0, double a1, double a2, double b0, double b1, do
 }
 
 void
-Biquad::SetHighPassParameter(double frequency, double samplingRate, double param_4, double qFactor, double param_6) {
+Biquad::SetHighPassParameter(double frequency, double samplingRate, double param_4, float qFactor, double param_6) {
     double x = (2.0 * M_PI * frequency) / samplingRate;
     double sinX = sin(x);
     double cosX = cos(x);
@@ -64,7 +64,7 @@ Biquad::SetHighPassParameter(double frequency, double samplingRate, double param
     double y = pow(10.0, param_4 / 40.0);
     double sqrtY = sqrt(y);
 
-    double z = sinX / 2.0 * sqrt((1.0 / y + y) * (1.0 / qFactor - 1.0) + 2.0);
+    double z = sinX / 2.0 * sqrt((1.0 / y + y) * (1.0 / (double) qFactor - 1.0) + 2.0);
     double a = (y - 1.0) * cosX;
     double b = (y + 1.0) + a;
     double c = (y + 1.0) * cosX;
@@ -81,10 +81,10 @@ Biquad::SetHighPassParameter(double frequency, double samplingRate, double param
     this->SetCoeffs(a0, a1, a2, b0, b1, b2);
 }
 
-void Biquad::SetLowPassParameter(double frequency, double samplingRate, double qFactor) {
+void Biquad::SetLowPassParameter(double frequency, double samplingRate, float qFactor) {
     double x = (2.0 * M_PI * frequency) / samplingRate;
     double sinX = sin(x);
-    double y = sinX / (qFactor * 2.0);
+    double y = sinX / ((double) qFactor * 2.0);
     double cosX = cos(x);
     double z = 1.0 - cosX;
 
diff --git a/src/cpp/viper/utils/Biquad.h b/src/cpp/viper/utils/Biquad.h
index f2e7ee3..f417fcf 100644
--- a/src/cpp/viper/utils/Biquad.h
+++ b/src/cpp/viper/utils/Biquad.h
@@ -8,10 +8,10 @@ public:
 
     double ProcessSample(double sample);
     void Reset();
-    void SetBandPassParameter(double frequency, double samplingRate, double qFactor);
+    void SetBandPassParameter(double frequency, double samplingRate, float qFactor);
     void SetCoeffs(double a0, double a1, double a2, double b0, double b1, double b2);
-    void SetHighPassParameter(double frequency, double samplingRate, double param_4, double qFactor, double param_6);
-    void SetLowPassParameter(double frequency, double samplingRate, double qFactor);
+    void SetHighPassParameter(double frequency, double samplingRate, double param_4, float qFactor, double param_6);
+    void SetLowPassParameter(double frequency, double samplingRate, float qFactor);
 
 private:
     double x_1;
diff --git a/src/cpp/viper/utils/FIR.cpp b/src/cpp/viper/utils/FIR.cpp
index 42ce13d..1ceb808 100644
--- a/src/cpp/viper/utils/FIR.cpp
+++ b/src/cpp/viper/utils/FIR.cpp
@@ -14,7 +14,7 @@ void FIR::FilterSamples(int *samples, uint32_t size) {
     this->FilterSamplesInterleaved(samples, size, 1);
 }
 
-void FIR::FilterSamplesInterleaved(int *samples, uint32_t size, uint32_t channels) {
+void FIR::FilterSamplesInterleaved(float *samples, uint32_t size, uint32_t channels) {
 
 }
 
@@ -22,7 +22,7 @@ int FIR::GetBlockLength() {
     return this->blockLength;
 }
 
-int FIR::LoadCoefficients(float *coeffs, uint32_t coeffsize, int blockLength) {
+int FIR::LoadCoefficients(const float *coeffs, uint32_t coeffsize, int blockLength) {
     return 0;
 }
 
diff --git a/src/cpp/viper/utils/FIR.h b/src/cpp/viper/utils/FIR.h
index d21529a..9962605 100644
--- a/src/cpp/viper/utils/FIR.h
+++ b/src/cpp/viper/utils/FIR.h
@@ -8,9 +8,9 @@ public:
     ~FIR();
 
     void FilterSamples(int *samples, uint32_t size);
-    void FilterSamplesInterleaved(int *samples, uint32_t size, uint32_t channels);
+    void FilterSamplesInterleaved(float *samples, uint32_t size, uint32_t channels);
     int GetBlockLength();
-    int LoadCoefficients(float *coeffs, uint32_t coeffsize, int blockLength);
+    int LoadCoefficients(const float *coeffs, uint32_t coeffsize, int blockLength);
     void Reset();
 
 private:
diff --git a/src/cpp/viper/utils/HighShelf.cpp b/src/cpp/viper/utils/HighShelf.cpp
index 227267e..326ea7f 100644
--- a/src/cpp/viper/utils/HighShelf.cpp
+++ b/src/cpp/viper/utils/HighShelf.cpp
@@ -10,16 +10,16 @@ double HighShelf::Process(double sample) {
     return out;
 }
 
-void HighShelf::SetFrequency(double freq) {
+void HighShelf::SetFrequency(float freq) {
     this->frequency = freq;
 }
 
-void HighShelf::SetGain(double gain) {
-    this->gain = log10(gain) * 20.0;
+void HighShelf::SetGain(float gain) {
+    this->gain = 20.0 * log10((double) gain);
 }
 
-void HighShelf::SetSamplingRate(double samplingRate) {
-    double x = (2 * M_PI * this->frequency) / samplingRate;
+void HighShelf::SetSamplingRate(uint32_t samplingRate) {
+    double x = (2 * M_PI * this->frequency) / (double) samplingRate;
     double sinX = sin(x);
     double cosX = cos(x);
     double y = exp((this->gain * log(10.0)) / 40.0);
@@ -38,7 +38,7 @@ void HighShelf::SetSamplingRate(double samplingRate) {
     double f = (y - 1.0) - d;
 
     this->a0 = 1.0 / c;
-    this->a1 = a * 2.0;
+    this->a1 = f * 2.0;
     this->a2 = b - z;
     this->b0 = (e + z) * y;
     this->b1 = -y * 2.0 * ((y - 1.0) + d);
diff --git a/src/cpp/viper/utils/HighShelf.h b/src/cpp/viper/utils/HighShelf.h
index 61df8b0..ce620c6 100644
--- a/src/cpp/viper/utils/HighShelf.h
+++ b/src/cpp/viper/utils/HighShelf.h
@@ -5,12 +5,12 @@
 class HighShelf {
 public:
     double Process(double sample);
-    void SetFrequency(double freq);
-    void SetGain(double gain);
-    void SetSamplingRate(double samplingRate);
+    void SetFrequency(float freq);
+    void SetGain(float gain);
+    void SetSamplingRate(uint32_t samplingRate);
 
 private:
-    double frequency;
+    float frequency;
     double gain;
     double x_1;
     double x_2;
diff --git a/src/cpp/viper/utils/Polyphase.cpp b/src/cpp/viper/utils/Polyphase.cpp
index 1e88aac..a6b7b93 100644
--- a/src/cpp/viper/utils/Polyphase.cpp
+++ b/src/cpp/viper/utils/Polyphase.cpp
@@ -1,11 +1,161 @@
 #include "Polyphase.h"
+#include "../constants.h"
+
+static const float POLYPHASE_COEFFICIENTS_2[] = {
+        -0.002339,
+        -0.002073,
+        -0.001940,
+        -0.001675,
+        -0.001515,
+        -0.001329,
+        -0.001223,
+        -0.001037,
+        -0.000904,
+        -0.000851,
+        -0.000532,
+        -0.000851,
+        -0.000106,
+        -0.001010,
+        0.000558,
+        -0.001435,
+        0.001302,
+        -0.001967,
+        0.002259,
+        -0.002605,
+        0.003216,
+        -0.003562,
+        0.004784,
+        -0.005475,
+        0.007655,
+        -0.008506,
+        0.017622,
+        -0.024639,
+        0.028679,
+        -0.017303,
+        -0.032507,
+        0.623321,
+        0.184702,
+        -0.166867,
+        0.025729,
+        -0.078490,
+        -0.015735,
+        -0.041199,
+        -0.023151,
+        -0.031524,
+        -0.020121,
+        -0.024985,
+        -0.017303,
+        -0.019616,
+        -0.015018,
+        -0.015204,
+        -0.012838,
+        -0.011881,
+        -0.010951,
+        -0.009516,
+        -0.009090,
+        -0.007788,
+        -0.007442,
+        -0.006353,
+        -0.006087,
+        -0.005183,
+        -0.004970,
+        -0.004253,
+        -0.003987,
+        -0.003482,
+        -0.003216,
+        -0.002871,
+        -0.002578
+};
+
+static const float POLYPHASE_COEFFICIENTS_OTHER[] = {
+        -0.014194,
+        -0.002339,
+        -0.006220,
+        -0.019722,
+        -0.020626,
+        -0.014885,
+        -0.012240,
+        -0.012386,
+        -0.011801,
+        -0.011376,
+        -0.016293,
+        -0.018845,
+        -0.018327,
+        -0.013902,
+        -0.014951,
+        -0.015895,
+        -0.019044,
+        -0.017928,
+        -0.020094,
+        -0.017715,
+        -0.018845,
+        -0.015377,
+        -0.018354,
+        -0.016665,
+        -0.018951,
+        -0.011416,
+        -0.019469,
+        -0.017250,
+        0.003549,
+        -0.076045,
+        0.288350,
+        0.267751,
+        -0.041212,
+        -0.005130,
+        -0.088418,
+        -0.089348,
+        -0.087686,
+        -0.065625,
+        -0.041305,
+        -0.013343,
+        0.001422,
+        0.010313,
+        0.005834,
+        -0.001170,
+        -0.014499,
+        -0.021822,
+        -0.030792,
+        -0.029331,
+        -0.031071,
+        -0.018407,
+        -0.027271,
+        -0.008373,
+        -0.010791,
+        -0.040680,
+        0.229171,
+        0.080324,
+        -0.070955,
+        0.021689,
+        -0.046607,
+        -0.025011,
+        -0.026886,
+        -0.027271,
+        -0.032919
+};
 
 Polyphase::Polyphase(int unknown1) {
+    this->samplingRate = DEFAULT_SAMPLERATE;
+    this->fir1 = new FIR();
+    this->fir2 = new FIR();
+    this->waveBuffer1 = new WaveBuffer(2, 0x1000);
+    this->waveBuffer2 = new WaveBuffer(2, 0x1000);
+    this->buffer = new float[0x7e0];
 
+    if (unknown1 == 2) {
+        this->fir1->LoadCoefficients(POLYPHASE_COEFFICIENTS_2, sizeof(POLYPHASE_COEFFICIENTS_2) / sizeof(float), 1008);
+        this->fir2->LoadCoefficients(POLYPHASE_COEFFICIENTS_2, sizeof(POLYPHASE_COEFFICIENTS_2) / sizeof(float), 1008);
+    } else if (unknown1 > 2) {
+        this->fir1->LoadCoefficients(POLYPHASE_COEFFICIENTS_OTHER, sizeof(POLYPHASE_COEFFICIENTS_OTHER) / sizeof(float), 1008);
+        this->fir2->LoadCoefficients(POLYPHASE_COEFFICIENTS_OTHER, sizeof(POLYPHASE_COEFFICIENTS_OTHER) / sizeof(float), 1008);
+    }
 }
 
 Polyphase::~Polyphase() {
-
+    delete this->fir1;
+    delete this->fir2;
+    delete this->waveBuffer1;
+    delete this->waveBuffer2;
+    delete this->buffer;
 }
 
 uint32_t Polyphase::GetLatency() {
@@ -13,14 +163,33 @@ uint32_t Polyphase::GetLatency() {
 }
 
 uint32_t Polyphase::Process(float *samples, uint32_t size) {
+    if (this->waveBuffer1->PushSamples(samples, size) != 0) {
+        uint32_t bufferOffset = this->waveBuffer1->GetBufferOffset();
+        while (bufferOffset >= 1008) {
+            if (this->waveBuffer1->PopSamples(this->buffer, 1008, false) == 1008) {
+                this->fir1->FilterSamplesInterleaved(this->buffer, 1008, 2);
+                this->fir2->FilterSamplesInterleaved(this->buffer + 1, 1008, 2);
+                this->waveBuffer2->PushSamples(this->buffer, 1008);
+            }
+            bufferOffset = this->waveBuffer1->GetBufferOffset();
+        }
+        if (this->waveBuffer2->GetBufferOffset() >= size) {
+            this->waveBuffer2->PopSamples(samples, size, true);
+        }
+    }
     return 0;
 }
 
 void Polyphase::Reset() {
-
+    this->fir1->Reset();
+    this->fir2->Reset();
+    this->waveBuffer1->Reset();
+    this->waveBuffer2->Reset();
 }
 
 void Polyphase::SetSamplingRate(uint32_t samplingRate) {
-
+    if (this->samplingRate != samplingRate) {
+        this->samplingRate = samplingRate;
+    }
 }
 
diff --git a/src/cpp/viper/utils/Polyphase.h b/src/cpp/viper/utils/Polyphase.h
index 86076a6..4f6a03b 100644
--- a/src/cpp/viper/utils/Polyphase.h
+++ b/src/cpp/viper/utils/Polyphase.h
@@ -19,9 +19,7 @@ private:
     FIR *fir2;
     WaveBuffer *waveBuffer1;
     WaveBuffer *waveBuffer2;
-    int *unknown1;
-    bool enabled;
-    // 3 unknowns
+    float *buffer;
     uint32_t samplingRate;
 };
 
diff --git a/src/cpp/viper/utils/TimeConstDelay.cpp b/src/cpp/viper/utils/TimeConstDelay.cpp
index 2da842f..a560863 100644
--- a/src/cpp/viper/utils/TimeConstDelay.cpp
+++ b/src/cpp/viper/utils/TimeConstDelay.cpp
@@ -10,7 +10,6 @@ TimeConstDelay::TimeConstDelay() {
 
 TimeConstDelay::~TimeConstDelay() {
     delete this->samples;
-    this->samples = nullptr;
 }
 
 float TimeConstDelay::ProcessSample(float sample) {
diff --git a/src/cpp/viper/utils/WaveBuffer.cpp b/src/cpp/viper/utils/WaveBuffer.cpp
index 4c2f503..dd70641 100644
--- a/src/cpp/viper/utils/WaveBuffer.cpp
+++ b/src/cpp/viper/utils/WaveBuffer.cpp
@@ -10,7 +10,6 @@ WaveBuffer::WaveBuffer(int channels, uint32_t size) {
 
 WaveBuffer::~WaveBuffer() {
     delete this->buffer;
-    this->buffer = nullptr;
 }
 
 uint32_t WaveBuffer::GetBufferOffset() {