#pragma once

#include "led.h"

struct wang_header {
    // First 16-byte chunk
    uint8_t magic[6]; // "wang\0\0"
    uint8_t flash_map;
    uint8_t marquee_map;
    uint8_t speed_and_mode[8];

    // Second 16-byte chunk
    uint16_t widths[8];

    // Third 16-byte chunk
    uint8_t padding[6];
    uint8_t time[6];
    uint8_t padding2[4];

    // Fourth 16-byte chunk, empty
    uint8_t blank[16];
};

// Receive some data in wang format
void wang_rx(const uint8_t *, int);

extern struct wang_header flash_header;
extern int flash_header_valid;
void wang_init(void);
void wang_render(int index, struct row_buf *output);

void wang_read(int index, int offset, int width, uint16_t *buf);