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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/>.
**/
/*
==============================================================================
AudioToPulse.cpp
Created: 31 Mar 2021 10:18:54pm
Author: Ryan Challinor
==============================================================================
*/
#include "AudioToPulse.h"
#include "OpenFrameworksPort.h"
#include "ModularSynth.h"
#include "PatchCableSource.h"
#include "Profiler.h"
#include "UIControlMacros.h"
AudioToPulse::AudioToPulse()
: IAudioProcessor(gBufferSize)
{
}
AudioToPulse::~AudioToPulse()
{
}
void AudioToPulse::CreateUIControls()
{
IDrawableModule::CreateUIControls();
UIBLOCK0();
FLOATSLIDER(mThresholdSlider, "threshold", &mThreshold, 0, 1);
FLOATSLIDER(mReleaseSlider, "release", &mRelease, .01f, 1000);
ENDUIBLOCK(mWidth, mHeight);
mThresholdSlider->SetMode(FloatSlider::kSquare);
mReleaseSlider->SetMode(FloatSlider::kSquare);
//update mReleaseFactor
FloatSliderUpdated(mReleaseSlider, 0, gTime);
GetPatchCableSource()->SetConnectionType(kConnectionType_Pulse);
}
void AudioToPulse::DrawModule()
{
if (Minimized() || IsVisible() == false)
return;
mThresholdSlider->Draw();
mReleaseSlider->Draw();
ofPushStyle();
ofFill();
ofSetColor(0, 255, 0, gModuleDrawAlpha * .4f);
ofRectangle rect = mThresholdSlider->GetRect(true);
rect.width *= ofClamp(sqrtf(mPeak), 0, 1);
rect.height *= .5f;
ofRect(rect);
ofSetColor(255, 0, 0, gModuleDrawAlpha * .4f);
rect = mThresholdSlider->GetRect(true);
rect.width *= ofClamp(mEnvelope, 0, 1);
rect.height *= .5f;
rect.y += rect.height;
ofRect(rect);
ofPopStyle();
}
void AudioToPulse::Process(double time)
{
PROFILER(AudioToPulse);
if (!mEnabled)
return;
ComputeSliders(0);
SyncBuffers();
const float kAttackTimeMs = 1;
assert(GetBuffer()->BufferSize());
Clear(gWorkBuffer, gBufferSize);
for (int ch = 0; ch < GetBuffer()->NumActiveChannels(); ++ch)
Add(gWorkBuffer, GetBuffer()->GetChannel(ch), gBufferSize);
Mult(gWorkBuffer, 1.0f / GetBuffer()->NumActiveChannels(), gBufferSize);
for (int i = 0; i < gBufferSize; ++i)
{
const float decayTime = .01f;
float scalar = powf(0.5f, 1.0f / (decayTime * gSampleRate));
float input = fabsf(gWorkBuffer[i]);
if (input >= mPeak)
{
/* When we hit a peak, ride the peak to the top. */
mPeak = input;
}
else
{
/* Exponential decay of output when signal is low. */
mPeak = mPeak * scalar;
if (mPeak < FLT_EPSILON)
mPeak = 0.0;
}
float oldEnvelope = mEnvelope;
if (mPeak >= mThreshold && mEnvelope < 1)
mEnvelope = MIN(1, mEnvelope + gInvSampleRateMs / kAttackTimeMs);
if (mPeak < mThreshold && mEnvelope > 0)
mEnvelope = MAX(0, mEnvelope - gInvSampleRateMs / mRelease);
if (mEnvelope >= 0.01f && oldEnvelope < 0.01f)
DispatchPulse(GetPatchCableSource(), time + i * gInvSampleRateMs, 1, 0);
}
GetBuffer()->Reset();
}
void AudioToPulse::FloatSliderUpdated(FloatSlider* slider, float oldVal, double time)
{
if (slider == mReleaseSlider)
mReleaseFactor = powf(.01f, 1.0f / (mRelease * gSampleRateMs));
}
void AudioToPulse::SaveLayout(ofxJSONElement& moduleInfo)
{
}
void AudioToPulse::LoadLayout(const ofxJSONElement& moduleInfo)
{
mModuleSaveData.LoadString("target", moduleInfo);
SetUpFromSaveData();
}
void AudioToPulse::SetUpFromSaveData()
{
SetUpPatchCables(mModuleSaveData.GetString("target"));
}
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