SmartMIDIFilteredAnalog.hpp

Go to the documentation of this file.

#pragma once
 
#include <AH/Containers/BitArray.hpp>
#include <AH/Hardware/Button.hpp>
#include <AH/STL/algorithm> // std::fill
#include <Banks/BankableAddresses.hpp>
#include <Def/Def.hpp>
#include <MIDI_Outputs/Abstract/MIDIOutputElement.hpp>
 
AH_DIAGNOSTIC_WERROR()
 
BEGIN_CS_NAMESPACE
 
namespace Bankable {
 
template <uint8_t NumBanks, class BankAddress, class Sender>
class SmartMIDIFilteredAnalog : public MIDIOutputElement {
  protected:
    SmartMIDIFilteredAnalog(BankAddress bankAddress, pin_t analogPin,
                            const Sender &sender)
        : address{bankAddress}, filteredAnalog{analogPin}, sender(sender) {}
 
  public:
    enum State {
        Active, 
        Lower,
        Higher,
    };
 
    void begin() override {
        previousBank = address.getSelection();
        std::fill(std::begin(previousValues), std::end(previousValues),
                  initial);
    }
    void update() override {
        if (filteredAnalog.update()) {
            address.lock();
            auto activeBank = address.getSelection();
            auto previousValue = previousValues[activeBank];
            auto value = filteredAnalog.getValue();
            if (activeBank == previousBank && state == Higher) {
                if (value <= previousValue)
                    state = Active;
            } else if (activeBank == previousBank && state == Lower) {
                if (value >= previousValue)
                    state = Active;
            } else if (activeBank != previousBank) {
                if (value == previousValue || previousValue == initial)
                    state = Active;
                else if (value > previousValue)
                    state = Higher;
                else
                    state = Lower;
                previousBank = activeBank;
            }
            if (activeBank == previousBank && state == Active) {
                sender.send(value, address.getActiveAddress());
                previousValues[activeBank] = value;
            }
            address.unlock();
        }
    }
 
    State getState() const { return state; }
 
    void activate() { state = Active; }
 
    void map(MappingFunction fn) { filteredAnalog.map(fn); }
 
    void invert() { filteredAnalog.invert(); }
 
    analog_t getRawValue() const { return filteredAnalog.getRawValue(); }
 
    analog_t getValue() const { return filteredAnalog.getValue(); }
 
  private:
    BankAddress address;
    AH::FilteredAnalog<Sender::precision()> filteredAnalog;
    static_assert(
        Sender::precision() <= 14,
        "Sender precision must be 14 or less, because larger values are "
        "reserved.");
    constexpr static analog_t initial = 1u << 14;
    AH::Array<analog_t, NumBanks> previousValues = {{}};
    State state = Active;
    setting_t previousBank = 0;
 
  public:
    Sender sender;
};
 
} // namespace Bankable
 
END_CS_NAMESPACE
 
AH_DIAGNOSTIC_POP()