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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/>.
**/
//
// MidiClockIn.h
// Bespoke
//
// Created by Ryan Challinor on 1/1/22.
//
//
#pragma once
#include "MidiDevice.h"
#include "IDrawableModule.h"
#include "DropdownList.h"
#include "Slider.h"
class IAudioSource;
//adapted from https://github.com/kushview/element/blob/f86f2c8d876abf635d96e5955b40995814248fa4/src/delaylockedloop.hpp
class DelayLockedLoop
{
public:
/** Reset the DLL with a time, period and rate */
inline void reset(double now, double period, double rate)
{
mE2 = period / rate;
mT0 = now;
mT1 = mT0 + mE2;
}
/** Update the DLL with the next timestamp */
inline void update(double time)
{
const double e = time - mT1;
mT0 = mT1;
mT1 += mB * e + mE2;
mE2 += mC * e;
}
/** Set the dll's parameters. Bandwidth / Frequency */
inline void setParams(double bandwidth, double frequency)
{
SetLPF(bandwidth, frequency);
}
/** Return the difference in filtered time (mT1 - mT0) */
inline double timeDiff()
{
return (mT1 - mT0);
}
private:
double mE2{ 0 };
double mT0{ 0 };
double mT1{ 0 };
double mB{ 0 };
double mC{ 0 };
inline void SetLPF(double bandwidth, double frequency)
{
double omega = 2.0 * juce::MathConstants<double>::pi * bandwidth / frequency;
mB = juce::MathConstants<double>::sqrt2 * omega;
mC = omega * omega;
}
};
class MidiClockIn : public IDrawableModule, public IDropdownListener, public MidiDeviceListener, public IFloatSliderListener, public IIntSliderListener
{
public:
MidiClockIn();
virtual ~MidiClockIn();
static IDrawableModule* Create() { return new MidiClockIn(); }
static bool AcceptsAudio() { return false; }
static bool AcceptsNotes() { return false; }
static bool AcceptsPulses() { return false; }
void CreateUIControls() override;
void Init() override;
void SetEnabled(bool enabled) override { mEnabled = enabled; }
bool HasDebugDraw() const override { return true; }
void OnMidiNote(MidiNote& note) override {}
void OnMidiControl(MidiControl& control) override {}
void OnMidi(const juce::MidiMessage& message) override;
void DropdownUpdated(DropdownList* list, int oldVal, double time) override;
void DropdownClicked(DropdownList* list) override;
void FloatSliderUpdated(FloatSlider* slider, float oldVal, double time) override {}
void IntSliderUpdated(IntSlider* slider, int oldVal, double time) override {}
virtual void LoadLayout(const ofxJSONElement& moduleInfo) override;
virtual void SetUpFromSaveData() override;
bool IsEnabled() const override { return mEnabled; }
private:
void InitDevice();
void BuildDeviceList();
float GetRoundedTempo();
//IDrawableModule
void DrawModule() override;
void DrawModuleUnclipped() override;
void GetModuleDimensions(float& w, float& h) override
{
w = mWidth;
h = mHeight;
}
float mWidth{ 200 };
float mHeight{ 20 };
enum class TempoRoundMode
{
kNone,
kWhole,
kHalf,
kQuarter,
kTenth
};
static constexpr int kMaxHistory = 40;
int mDeviceIndex{ -1 };
DropdownList* mDeviceList{ nullptr };
TempoRoundMode mTempoRoundMode{ TempoRoundMode::kWhole };
DropdownList* mTempoRoundModeList{ nullptr };
float mStartOffsetMs{ 0 };
FloatSlider* mStartOffsetMsSlider{ nullptr };
int mSmoothAmount{ kMaxHistory / 2 };
IntSlider* mSmoothAmountSlider{ nullptr };
bool mObeyClockStartStop{ true };
MidiDevice mDevice;
std::array<float, kMaxHistory> mTempoHistory;
int mTempoIdx{ -1 };
double mLastTimestamp{ -1 };
int mReceivedPulseCount{ 0 };
DelayLockedLoop mDelayLockedLoop;
};
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