bsnes-libretro/Core/sgb.h

#ifndef sgb_h
#define sgb_h
#include "gb_struct_def.h"
#include <stdint.h>
#include <stdbool.h>

#ifdef GB_INTERNAL
typedef struct {
    uint8_t command[16 * 7];
    uint16_t command_write_index;
    bool ready_for_pulse;
    bool ready_for_write;
    bool ready_for_stop;
    bool disable_commands;
    
    /* Screen buffer */
    uint8_t screen_buffer[160 * 144]; // Live image from the Game Boy
    uint8_t effective_screen_buffer[160 * 144]; // Image actually rendered to the screen
    
    /* Multiplayer Input */
    uint8_t player_count, current_player;
    
    /* Mask */
    uint8_t mask_mode;
    
    /* Border */
    uint8_t vram_transfer_countdown;
    bool tile_transfer, tile_transfer_high, data_transfer;
    struct {
        uint8_t tiles[0x100 * 8 * 8]; /* High nibble not used*/
        union {
            struct {
                uint16_t map[32 * 32];
                uint16_t palette[16 * 4];
            };
            uint16_t raw_data[0x440];
        };
    } border, pending_border;
    uint8_t border_animation;

} GB_sgb_t;

void GB_sgb_write(GB_gameboy_t *gb, uint8_t value);
void GB_sgb_render(GB_gameboy_t *gb);
void GB_sgb_load_default_border(GB_gameboy_t *gb);

#endif

#endif