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MiniDexed/src/fx_pitch_shifter.h

114 lines
4.2 KiB

// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
//
// fx_shimmer_reverb3.h
//
// Stereo Pitch Shifter proposed in the context of the MiniDexed project
// It is adapted from the Pitch Shifter that could be found on Cloud EuroRack module from Mutable Instrruments
//
#pragma once
#include "fx_components.h"
#include "fx_engine.hpp"
#define PITCH_SHIFTER_BUFFER_SIZE 4096
#define PITCH_SHIFTER_TRANSPOSE_BOUNDARY 36.0f
class PitchShifter : public FXElement
{
DISALLOW_COPY_AND_ASSIGN(PitchShifter);
public:
PitchShifter(float32_t sampling_rate, float32_t transpose_boundary = PITCH_SHIFTER_TRANSPOSE_BOUNDARY);
virtual ~PitchShifter();
virtual void reset() override;
virtual void processSample(float32_t inL, float32_t inR, float32_t& outL, float32_t& outR) override;
void setTranspose(float32_t transpose);
float32_t getTranspose() const;
void setSize(float32_t size);
float32_t getSize() const;
private:
typedef FxEngine<PITCH_SHIFTER_BUFFER_SIZE, Format::FORMAT_FLOAT32, false> Engine;
Engine engine_;
const float32_t TransposeBoundary;
float32_t phase_;
float32_t transpose_;
float32_t ratio_;
float32_t size_;
float32_t sample_size_;
IMPLEMENT_DUMP(
const size_t space = 12;
const size_t precision = 6;
std::stringstream ss;
out << "START " << tag << "(" << typeid(*this).name() << ") dump" << std::endl << std::endl;
SS_RESET(ss, precision, std::left);
SS__TEXT(ss, ' ', space, std::left, '|', "phase_");
SS__TEXT(ss, ' ', space, std::left, '|', "transpose_");
SS__TEXT(ss, ' ', space, std::left, '|', "ratio_");
SS__TEXT(ss, ' ', space, std::left, '|', "size_");
SS__TEXT(ss, ' ', space, std::left, '|', "sample_size_");
out << "\t" << ss.str() << std::endl;
SS_RESET(ss, precision, std::left);
SS_SPACE(ss, '-', space, std::left, '+');
SS_SPACE(ss, '-', space, std::left, '+');
SS_SPACE(ss, '-', space, std::left, '+');
SS_SPACE(ss, '-', space, std::left, '+');
SS_SPACE(ss, '-', space, std::left, '+');
SS_SPACE(ss, '-', space, std::left, '+');
out << "\t" << ss.str() << std::endl;
SS_RESET(ss, precision, std::left);
SS__TEXT(ss, ' ', space - 1, std::right, " |", this->phase_);
SS__TEXT(ss, ' ', space - 1, std::right, " |", this->transpose_);
SS__TEXT(ss, ' ', space - 1, std::right, " |", this->ratio_);
SS__TEXT(ss, ' ', space - 1, std::right, " |", this->size_);
SS__TEXT(ss, ' ', space - 1, std::right, " |", this->sample_size_);
out << "\t" << ss.str() << std::endl;
if(deepInspection)
{
this->engine_.dump(out, deepInspection, tag + ".engine_");
}
out << "END " << tag << "(" << typeid(*this).name() << ") dump" << std::endl << std::endl;
)
IMPLEMENT_INSPECT(
size_t nb_errors = 0u;
nb_errors += inspector(tag + ".phase_", this->phase_, 0.0f, 1.0f, deepInspection);
nb_errors += inspector(tag + ".transpose_", this->transpose_, -PITCH_SHIFTER_TRANSPOSE_BOUNDARY, PITCH_SHIFTER_TRANSPOSE_BOUNDARY, deepInspection);
nb_errors += inspector(tag + ".ratio_", this->ratio_, 0.0f, 1.0f, deepInspection);
nb_errors += inspector(tag + ".size_", this->size_, 0.0f, 1.0f, deepInspection);
nb_errors += inspector(tag + ".sample_size_", this->sample_size_, 0.0f, 1.0f, deepInspection);
if(deepInspection)
{
nb_errors += this->engine_.inspect(inspector, deepInspection, tag + ".engine_");
}
return nb_errors;
)
};