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MiniDexed/src/fx_unit.hpp

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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_unit.h
//
// Unit of FX that handle enable and wet parameters
//
#pragma once
#include "fx_components.h"
class FXUnitModule
{
DISALLOW_COPY_AND_ASSIGN(FXUnitModule);
public:
FXUnitModule(bool enable = true, float32_t wet_level = 0.5f)
{
this->setEnable(enable);
this->setWetLevel(wet_level);
}
virtual ~FXUnitModule()
{
}
virtual void processSample(float32_t inL, float32_t inR, float32_t& outL, float32_t& outR) = 0;
void setEnable(bool enable = true)
{
this->enable_ = enable;
}
inline bool isEnable() const
{
return this->enable_;
}
void setWetLevel(float32_t wet_level)
{
this->wet_level_ = constrain(wet_level, 0.0f, 1.0f);
}
inline float32_t getWetLevel() const
{
return this->wet_level_;
}
protected:
bool enable_;
float32_t wet_level_; // How much the signal is affected by the inner FX (0.0 - 1.0)
};
template<typename _FXElement>
class FXUnit : public virtual FXUnitModule, public virtual _FXElement
{
DISALLOW_COPY_AND_ASSIGN(FXUnit);
public:
FXUnit(float32_t sampling_rate, bool enable = true, float32_t wet_level = 0.5f) :
FXUnitModule(),
_FXElement(sampling_rate)
{
this->setEnable(enable);
this->setWetLevel(wet_level);
}
virtual ~FXUnit()
{
}
void processSample(float32_t inL, float32_t inR, float32_t& outL, float32_t& outR)
{
if(!this->isEnable() || this->getWetLevel() == 0.0f)
{
outL = inL;
outR = inR;
}
else
{
_FXElement::processSample(inL, inR, outL, outR);
float32_t dry = 1.0f - this->getWetLevel();
outL = this->getWetLevel() * outL + dry * inL;
outR = this->getWetLevel() * outR + dry * inR;
}
}
};