Bankable/Abstract/MIDIRotaryEncoder.hpp

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#pragma once
 
#include <AH/STL/utility> // std::forward
#include <Banks/BankableAddresses.hpp>
#include <Def/Def.hpp>
#include <Def/TypeTraits.hpp>
#include <MIDI_Outputs/Abstract/EncoderState.hpp>
#include <MIDI_Outputs/Abstract/MIDIOutputElement.hpp>
 
#ifdef ARDUINO
#include <Submodules/Encoder/AHEncoder.hpp>
#else
#include <Encoder.h> // Mock
#endif
 
BEGIN_CS_NAMESPACE
 
namespace Bankable {

template <class Enc, class BankAddress, class Sender>
class GenericMIDIRotaryEncoder : public MIDIOutputElement {
  protected:
    GenericMIDIRotaryEncoder(BankAddress bankAddress, Enc &&encoder,
                             int16_t speedMultiply, uint8_t pulsesPerStep,
                             const Sender &sender)
        : address(bankAddress), encoder(std::forward<Enc>(encoder)),
          encstate(speedMultiply, pulsesPerStep), sender(sender) {}
 
  public:
    void begin() override { begin_if_possible(encoder); }
 
    void update() override {
        auto encval = encoder.read();
        if (int16_t delta = encstate.update(encval)) {
            sender.send(delta, address.getActiveAddress());
        }
    }
 
    void setSpeedMultiply(int16_t speedMultiply) {
        encstate.setSpeedMultiply(speedMultiply);
    }
    int16_t getSpeedMultiply() const { return encstate.getSpeedMultiply(); }
 
    int16_t resetPositionOffset() {
        auto encval = encoder.read();
        return encstate.update(encval);
    }
 
  protected:
    BankAddress address;
    Enc encoder;
    EncoderState<decltype(encoder.read())> encstate;
 
  public:
    Sender sender;
};
 
template <class BankAddress, class Sender>
using MIDIRotaryEncoder =
    GenericMIDIRotaryEncoder<AHEncoder, BankAddress, Sender>;
 
template <class BankAddress, class Sender>
using BorrowedMIDIRotaryEncoder =
    GenericMIDIRotaryEncoder<AHEncoder &, BankAddress, Sender>;
 
} // namespace Bankable
 
END_CS_NAMESPACE