Debouncer.h

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#pragma once
 
#include "AudioLogger.h"
 
namespace audio_tools {
 
    class Debouncer {
 
    public:
        Debouncer(uint16_t timeoutMs = 5000, void* ref = nullptr) {
            setDebounceTimeout(timeoutMs);
            p_ref = ref;
        }
 
        void setDebounceTimeout(uint16_t timeoutMs) {
            ms = timeoutMs;
        }
 
        bool debounce(void(*cb)(void* ref) = nullptr) {
            bool result = false;
            // signed-difference comparison so this keeps working correctly
            // across a millis() rollover (~49.7 days), unlike a plain
            // millis() > debounce_ms check
            if ((long)(millis() - debounce_ms) >= 0) {
                LOGI("accepted");
                if (cb != nullptr) cb(p_ref);
                // new time limit
                debounce_ms = millis() + ms;
                result = true;
            }
            else {
                LOGI("rejected");
            }
            return result;
        }
 
    protected:
        unsigned long debounce_ms = 0; // Debounce sensitive touch
        uint16_t ms;
        void* p_ref = nullptr;
 
    };
 
}