#pragma once
#include "derivative.h"
#include "fft/fft.h"
#define FS 20000
#define RE FS / FFT_N
#define BUF_M 1024
#define FREQ_BIT1 1100
#define FREQ_SYNC 1200
#define FREQ_BIT0 1300
#define FREQ_START 1900
#define FREQ_BLACK 1500
#define FREQ_WHITE 4000
#define FREQ_RANGE FREQ_WHITE - FREQ_BLACK
#define COLOR_SCALE 64
uint8_t decode_sstv();