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/**
bespoke synth, a software modular synthesizer
Copyright (C) 2021 Ryan Challinor (contact: awwbees@gmail.com)
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/>.
**/
//
// ModulationChain.h
// Bespoke
//
// Created by Ryan Challinor on 12/26/15.
//
//
#pragma once
#include "Ramp.h"
#include "LFO.h"
class ModulationChain
{
public:
ModulationChain(float initialValue);
float GetValue(int samplesIn) const;
float GetIndividualValue(int samplesIn) const;
void SetValue(float value);
void RampValue(double time, float from, float to, double length);
void SetLFO(NoteInterval interval, float amount);
void AppendTo(ModulationChain* chain);
void SetSidechain(ModulationChain* chain);
void MultiplyIn(ModulationChain* chain);
void CreateBuffer();
void FillBuffer(float* buffer);
float GetBufferValue(int sampleIdx);
private:
Ramp mRamp;
LFO mLFO;
float mLFOAmount{ 0 };
float* mBuffer{ nullptr };
ModulationChain* mPrev{ nullptr };
ModulationChain* mSidechain{ nullptr };
ModulationChain* mMultiplyIn{ nullptr };
};
struct ModulationParameters
{
ModulationParameters() {}
ModulationParameters(ModulationChain* _pitchBend,
ModulationChain* _modWheel,
ModulationChain* _pressure,
float _pan)
: pitchBend(_pitchBend)
, modWheel(_modWheel)
, pressure(_pressure)
, pan(_pan)
{}
ModulationChain* pitchBend{ nullptr };
ModulationChain* modWheel{ nullptr };
ModulationChain* pressure{ nullptr };
float pan{ 0 };
static constexpr float kDefaultPitchBend{ 0 };
static constexpr float kDefaultModWheel{ 0 };
static constexpr float kDefaultPressure{ .5f };
};
struct ModulationCollection
{
ModulationChain mPitchBend{ ModulationParameters::kDefaultPitchBend };
ModulationChain mModWheel{ ModulationParameters::kDefaultModWheel };
ModulationChain mPressure{ ModulationParameters::kDefaultPressure };
};
class Modulations
{
public:
Modulations(bool isGlobalEffect); //isGlobalEffect: is the effect that we're using this on a global effect that affects all voices (pitch bend all voices that come through here the same way) or a voice effect (affect individual voices that come through here individually)?
ModulationChain* GetPitchBend(int voiceIdx);
ModulationChain* GetModWheel(int voiceIdx);
ModulationChain* GetPressure(int voiceIdx);
private:
ModulationCollection mGlobalModulation;
std::vector<ModulationCollection> mVoiceModulations;
};
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