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MiniDexed/src/fx_chorus.h

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// 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_chorus.h
//
// Stereo Chorus audio effects proposed in the context of the MiniDexed project
// This implemelntation is based on the Chorus FX from the Rings Eurorack module from Mutable Instruments
//
#pragma once
#include "fx_components.h"
#include "fx_engine.hpp"
class Chorus : public FXElement
{
DISALLOW_COPY_AND_ASSIGN(Chorus);
public:
enum LFO_Index
{
Sin1 = 0,
Sin2,
Cos1,
Cos2
};
Chorus(float32_t sampling_rate);
virtual ~Chorus();
virtual void processSample(float32_t inL, float32_t inR, float32_t& outL, float32_t& outR) override;
void setDepth(float32_t depth);
float32_t getDepth() const;
void setRate(float32_t rate);
float32_t getRate() const;
private:
typedef FxEngine<2048, FORMAT_16_BIT, false> Engine;
Engine engine_;
float32_t rate_; // Normalized frequency for the 2 LFOs frequencies (0.0 - 10.0)
float32_t depth_; // Depth of the chorus in milliseconds (0.0 - 10.0)
float32_t fullscale_depth_; // Equivalent to depth_ but in the range of (0.0 - 384.0)
float32_t feedback_; // Feedback level of the chorus (0.0 - 1.0)
LFO* lfo_[4];
};