qmk_firmware/quantum/debounce.h

#pragma once

// raw is the current key state
// on entry cooked is the previous debounced state
// on exit cooked is the current debounced state
// changed is true if raw has changed since the last call
void debounce(matrix_row_t raw[], matrix_row_t cooked[], uint8_t num_rows, bool changed);

bool debounce_active(void);

void debounce_init(uint8_t num_rows);