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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/>.
**/
//
// PitchChorus.cpp
// Bespoke
//
// Created by Ryan Challinor on 6/19/15.
//
//
#include "PitchChorus.h"
#include "Profiler.h"
#include "Scale.h"
#include "SynthGlobals.h"
PitchChorus::PitchChorus()
: IAudioProcessor(gBufferSize)
, mPassthrough(true)
, mPassthroughCheckbox(nullptr)
{
mOutputBuffer = new float[gBufferSize];
Clear(mOutputBuffer, gBufferSize);
}
void PitchChorus::CreateUIControls()
{
IDrawableModule::CreateUIControls();
mPassthroughCheckbox = new Checkbox(this, "passthrough", 4, 4, &mPassthrough);
}
PitchChorus::~PitchChorus()
{
delete[] mOutputBuffer;
}
void PitchChorus::Process(double time)
{
PROFILER(PitchChorus);
if (!mEnabled)
return;
ComputeSliders(0);
SyncBuffers();
int bufferSize = GetBuffer()->BufferSize();
IAudioReceiver* target = GetTarget();
if (target)
{
Clear(mOutputBuffer, gBufferSize);
for (int i = 0; i < kNumShifters; ++i)
{
if (mShifters[i].mOn || mShifters[i].mRamp.Value(time) > 0)
{
BufferCopy(gWorkBuffer, GetBuffer()->GetChannel(0), bufferSize);
mShifters[i].mShifter.Process(gWorkBuffer, bufferSize);
double timeCopy = time;
for (int j = 0; j < bufferSize; ++j)
{
mOutputBuffer[j] += gWorkBuffer[j] * mShifters[i].mRamp.Value(timeCopy);
timeCopy += gInvSampleRateMs;
}
}
}
if (mPassthrough)
Add(mOutputBuffer, GetBuffer()->GetChannel(0), bufferSize);
Add(target->GetBuffer()->GetChannel(0), mOutputBuffer, bufferSize);
}
GetVizBuffer()->WriteChunk(mOutputBuffer, bufferSize, 0);
GetBuffer()->Reset();
}
void PitchChorus::PlayNote(double time, int pitch, int velocity, int voiceIdx, ModulationParameters modulation)
{
for (int i = 0; i < kNumShifters; ++i)
{
if (velocity > 0 && mShifters[i].mOn == false)
{
float ratio = TheScale->PitchToFreq(pitch) / TheScale->PitchToFreq(60);
mShifters[i].mOn = true;
mShifters[i].mShifter.SetRatio(ratio);
mShifters[i].mPitch = pitch;
mShifters[i].mRamp.Start(time, 1, time + 100);
break;
}
if (velocity == 0 && mShifters[i].mOn == true && mShifters[i].mPitch == pitch)
{
mShifters[i].mOn = false;
mShifters[i].mRamp.Start(time, 0, time + 100);
break;
}
}
}
void PitchChorus::DrawModule()
{
if (Minimized() || IsVisible() == false)
return;
mPassthroughCheckbox->Draw();
}
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