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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/>.
**/
//
// TremoloEffect.cpp
// modularSynth
//
// Created by Ryan Challinor on 12/27/12.
//
//
#include "TremoloEffect.h"
#include "OpenFrameworksPort.h"
#include "Profiler.h"
#include "UIControlMacros.h"
TremoloEffect::TremoloEffect()
{
mLFO.SetPeriod(mInterval);
mLFO.SetType(mOscType);
Clear(mWindow, kAntiPopWindowSize);
}
void TremoloEffect::CreateUIControls()
{
IDrawableModule::CreateUIControls();
UIBLOCK0();
FLOATSLIDER(mAmountSlider, "amount", &mAmount, 0, 1);
FLOATSLIDER(mOffsetSlider, "offset", &mOffset, 0, 1);
FLOATSLIDER(mDutySlider, "duty", &mDuty, 0, 1);
DROPDOWN(mIntervalSelector, "interval", (int*)(&mInterval), 45);
UIBLOCK_SHIFTRIGHT();
DROPDOWN(mOscSelector, "osc", (int*)(&mOscType), 45);
ENDUIBLOCK(mWidth, mHeight);
mIntervalSelector->AddLabel("1n", kInterval_1n);
mIntervalSelector->AddLabel("2n", kInterval_2n);
mIntervalSelector->AddLabel("4n", kInterval_4n);
mIntervalSelector->AddLabel("4nt", kInterval_4nt);
mIntervalSelector->AddLabel("8n", kInterval_8n);
mIntervalSelector->AddLabel("8nt", kInterval_8nt);
mIntervalSelector->AddLabel("16n", kInterval_16n);
mIntervalSelector->AddLabel("16nt", kInterval_16nt);
mIntervalSelector->AddLabel("32n", kInterval_32n);
mOscSelector->AddLabel("sin", kOsc_Sin);
mOscSelector->AddLabel("saw", kOsc_Saw);
mOscSelector->AddLabel("-saw", kOsc_NegSaw);
mOscSelector->AddLabel("squ", kOsc_Square);
mOscSelector->AddLabel("tri", kOsc_Tri);
}
void TremoloEffect::ProcessAudio(double time, ChannelBuffer* buffer)
{
PROFILER(TremoloEffect);
if (!mEnabled)
return;
float bufferSize = buffer->BufferSize();
ComputeSliders(0);
if (mAmount > 0)
{
for (int i = 0; i < bufferSize; ++i)
{
//smooth out LFO a bit to avoid pops with square/saw LFOs
mWindow[mWindowPos] = mLFO.Value(i + kAntiPopWindowSize / 2);
mWindowPos = (mWindowPos + 1) % kAntiPopWindowSize;
float lfoVal = 0;
for (int j = 0; j < kAntiPopWindowSize; ++j)
lfoVal += mWindow[j];
lfoVal /= kAntiPopWindowSize;
for (int ch = 0; ch < buffer->NumActiveChannels(); ++ch)
buffer->GetChannel(ch)[i] *= (1 - (mAmount * (1 - lfoVal)));
}
}
}
void TremoloEffect::DrawModule()
{
if (!mEnabled)
return;
mAmountSlider->Draw();
mIntervalSelector->Draw();
mOffsetSlider->Draw();
mOscSelector->Draw();
mDutySlider->Draw();
ofPushStyle();
ofSetColor(0, 200, 0, gModuleDrawAlpha * .3f);
ofFill();
ofRect(5, 4, mLFO.Value() * 85 * mAmount, 14);
ofPopStyle();
}
float TremoloEffect::GetEffectAmount()
{
if (!mEnabled)
return 0;
return mAmount;
}
void TremoloEffect::DropdownUpdated(DropdownList* list, int oldVal, double time)
{
if (list == mIntervalSelector)
mLFO.SetPeriod(mInterval);
if (list == mOscSelector)
mLFO.SetType(mOscType);
}
void TremoloEffect::CheckboxUpdated(Checkbox* checkbox, double time)
{
}
void TremoloEffect::FloatSliderUpdated(FloatSlider* slider, float oldVal, double time)
{
if (slider == mOffsetSlider)
mLFO.SetOffset(mOffset);
if (slider == mDutySlider)
{
mLFO.SetPulseWidth(mDuty);
}
}
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