Forgot 1 important source file for the conversion TapeDelay to Delay

src/fx_delay.cpp

@@ -0,0 +1,126 @@
+#include "fx_delay.h"
+
+#include <cmath>
+
+#define MAX_DELAY_TIME 1.0f
+#define MAX_FLUTTER_DELAY_TIME 0.01f
+
+#define LPF_CUTOFF_REF 14000.0f
+#define HPF_CUTOFF_REF 60.0f
+
+Delay::LowHighPassFilter::LowHighPassFilter(float32_t sampling_rate) :
+    FXElement(sampling_rate),
+    lpf_(sampling_rate, StateVariableFilter::Type::LPF, LPF_CUTOFF_REF),
+    hpf_(sampling_rate, StateVariableFilter::Type::HPF, HPF_CUTOFF_REF)
+{
+    this->setCutoffChangeRatio(0.0f);
+}
+
+Delay::LowHighPassFilter::~LowHighPassFilter()
+{
+}
+
+void Delay::LowHighPassFilter::setCutoffChangeRatio(float32_t ratio)
+{
+    ratio += 1.0f;
+
+    this->lpf_.setCutoff(LPF_CUTOFF_REF * ratio);
+    this->hpf_.setCutoff(HPF_CUTOFF_REF * ratio);
+}
+
+void Delay::LowHighPassFilter::processSample(float32_t inL, float32_t inR, float32_t& outL, float32_t& outR)
+{
+    this->lpf_.processSample(inL, inR, outL, outR);
+    this->hpf_.processSample(outL, outR, outL, outR);
+}
+
+Delay::Delay(const float32_t sampling_rate, float32_t default_delay_time, float32_t default_flutter_level, float32_t default_feedback_level) :
+    FXElement(sampling_rate),
+    MaxSampleDelayTime((MAX_DELAY_TIME + MAX_FLUTTER_DELAY_TIME) * sampling_rate * MAX_DELAY_TIME),
+    read_pos_L_(0),
+    read_pos_R_(0),
+    filter_(sampling_rate)
+{
+    this->buffer_L_ = new float32_t[this->MaxSampleDelayTime];
+    this->buffer_R_ = new float32_t[this->MaxSampleDelayTime];
+
+    memset(this->buffer_L_, 0, this->MaxSampleDelayTime * sizeof(float32_t));
+    memset(this->buffer_R_, 0, this->MaxSampleDelayTime * sizeof(float32_t));
+
+    this->setLeftDelayTime(default_delay_time);
+    this->setRightDelayTime(default_delay_time);
+    this->setFeedbak(default_feedback_level);
+}
+
+Delay::~Delay()
+{
+    delete[] this->buffer_L_;
+    delete[] this->buffer_R_;
+}
+
+void Delay::processSample(float32_t inL, float32_t inR, float32_t& outL, float32_t& outR)
+{
+    float32_t delay_time_L = (MAX_DELAY_TIME * this->getLeftDelayTime() ) * this->getSamplingRate();
+    float32_t delay_time_R = (MAX_DELAY_TIME * this->getRightDelayTime()) * this->getSamplingRate();
+
+    // Calculate write positions
+    unsigned write_pos_L = static_cast<unsigned>(this->MaxSampleDelayTime + this->read_pos_L_ + delay_time_L) % this->MaxSampleDelayTime;
+    unsigned write_pos_R = static_cast<unsigned>(this->MaxSampleDelayTime + this->read_pos_R_ + delay_time_R) % this->MaxSampleDelayTime;
+
+    // Write input to delay buffers
+    this->buffer_L_[write_pos_L] = inL;
+    this->buffer_R_[write_pos_R] = inR;
+
+    // Read from delay buffers and apply feedback
+    this->filter_.processSample(
+        this->buffer_L_[this->read_pos_L_],
+        this->buffer_R_[this->read_pos_R_],
+        outL,
+        outR
+    );
+
+    this->buffer_L_[write_pos_L] += outL * this->getFeedbackLevel();
+    this->buffer_R_[write_pos_R] += outR * this->getFeedbackLevel();
+
+    // Increment read positions
+    ++this->read_pos_L_;
+    if(this->read_pos_L_ >= this->MaxSampleDelayTime)
+    {
+        this->read_pos_L_ -= this->MaxSampleDelayTime;
+    }
+    ++this->read_pos_R_;
+    if(this->read_pos_R_ >= this->MaxSampleDelayTime)
+    {
+        this->read_pos_R_ -= this->MaxSampleDelayTime;
+    }
+}
+
+void Delay::setLeftDelayTime(float32_t delay_time)
+{
+    this->delay_time_L_ = constrain(delay_time, 0.0f, 1.0f);
+}
+
+float32_t Delay::getLeftDelayTime() const
+{
+    return this->delay_time_L_;
+}
+
+void Delay::setRightDelayTime(float32_t delay_time)
+{
+    this->delay_time_R_ = constrain(delay_time, 0.0f, 1.0f);
+}
+
+float32_t Delay::getRightDelayTime() const
+{
+    return this->delay_time_R_;
+}
+
+void Delay::setFeedbak(float32_t feedback)
+{
+    this->feedback_ = constrain(feedback, 0.0, 1.0);
+}
+
+float32_t Delay::getFeedbackLevel() const
+{
+    return this->feedback_;
+}