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#pragma once
#include "gb.h"
#include <stdbool.h>
#include <stdint.h>
typedef struct {
struct GB_color_s {
uint8_t r, g, b;
} colors[5];
} GB_palette_t;
extern const GB_palette_t GB_PALETTE_GREY;
extern const GB_palette_t GB_PALETTE_DMG;
extern const GB_palette_t GB_PALETTE_MGB;
extern const GB_palette_t GB_PALETTE_GBL;
typedef enum {
GB_VBLANK_TYPE_NORMAL_FRAME, // An actual Vblank-triggered frame
GB_VBLANK_TYPE_LCD_OFF, // An artificial frame pushed while the LCD was off
GB_VBLANK_TYPE_ARTIFICIAL, // An artificial frame pushed for some other reason
GB_VBLANK_TYPE_REPEAT, // A frame that would not render on actual hardware, but the screen should retain the previous frame
GB_VBLANK_TYPE_SKIPPED_FRAME, // If enabled via GB_set_enable_skipped_frame_vblank_callbacks, called on skipped frames during turbo mode
} GB_vblank_type_t;
typedef void (*GB_vblank_callback_t)(GB_gameboy_t *gb, GB_vblank_type_t type);
typedef uint32_t (*GB_rgb_encode_callback_t)(GB_gameboy_t *gb, uint8_t r, uint8_t g, uint8_t b);
typedef struct {
uint8_t pixel; // Color, 0-3
uint8_t palette; // Palette, 0 - 7 (CGB); 0-1 in DMG (or just 0 for BG)
uint8_t priority; // Object priority – 0 in DMG, OAM index in CGB
bool bg_priority; // For object FIFO – the BG priority bit. For the BG FIFO – the CGB attributes priority bit
} GB_fifo_item_t;
#define GB_FIFO_LENGTH 8
typedef struct {
GB_fifo_item_t fifo[GB_FIFO_LENGTH];
uint8_t read_end;
uint8_t size;
} GB_fifo_t;
#ifdef GB_INTERNAL
internal void GB_display_run(GB_gameboy_t *gb, unsigned cycles, bool force);
internal void GB_palette_changed(GB_gameboy_t *gb, bool background_palette, uint8_t index);
internal void GB_STAT_update(GB_gameboy_t *gb);
internal void GB_lcd_off(GB_gameboy_t *gb);
internal void GB_display_vblank(GB_gameboy_t *gb, GB_vblank_type_t type);
internal void GB_update_wx_glitch(GB_gameboy_t *gb);
internal void GB_update_dmg_palette(GB_gameboy_t *gb);
#define GB_display_sync(gb) GB_display_run(gb, 0, true)
enum {
GB_OBJECT_PRIORITY_X,
GB_OBJECT_PRIORITY_INDEX,
};
#endif
typedef enum {
GB_PALETTE_NONE,
GB_PALETTE_BACKGROUND,
GB_PALETTE_OAM,
GB_PALETTE_AUTO,
} GB_palette_type_t;
typedef enum {
GB_MAP_AUTO,
GB_MAP_9800,
GB_MAP_9C00,
} GB_map_type_t;
typedef enum {
GB_TILESET_AUTO,
GB_TILESET_8800,
GB_TILESET_8000,
} GB_tileset_type_t;
typedef struct {
uint32_t image[128];
uint8_t x, y, tile, flags;
uint16_t oam_addr;
bool obscured_by_line_limit;
} GB_oam_info_t;
typedef enum {
GB_COLOR_CORRECTION_DISABLED,
GB_COLOR_CORRECTION_CORRECT_CURVES,
GB_COLOR_CORRECTION_MODERN_BALANCED,
GB_COLOR_CORRECTION_MODERN_BOOST_CONTRAST,
GB_COLOR_CORRECTION_REDUCE_CONTRAST,
GB_COLOR_CORRECTION_LOW_CONTRAST,
GB_COLOR_CORRECTION_MODERN_ACCURATE,
} GB_color_correction_mode_t;
static const GB_color_correction_mode_t __attribute__((deprecated("Use GB_COLOR_CORRECTION_MODERN_BALANCED instead"))) GB_COLOR_CORRECTION_EMULATE_HARDWARE = GB_COLOR_CORRECTION_MODERN_BALANCED;
static const GB_color_correction_mode_t __attribute__((deprecated("Use GB_COLOR_CORRECTION_MODERN_BOOST_CONTRAST instead"))) GB_COLOR_CORRECTION_PRESERVE_BRIGHTNESS = GB_COLOR_CORRECTION_MODERN_BOOST_CONTRAST;
void GB_set_vblank_callback(GB_gameboy_t *gb, GB_vblank_callback_t callback);
void GB_set_enable_skipped_frame_vblank_callbacks(GB_gameboy_t *gb, bool enable);
void GB_set_rgb_encode_callback(GB_gameboy_t *gb, GB_rgb_encode_callback_t callback);
void GB_set_palette(GB_gameboy_t *gb, const GB_palette_t *palette);
const GB_palette_t *GB_get_palette(GB_gameboy_t *gb);
void GB_set_color_correction_mode(GB_gameboy_t *gb, GB_color_correction_mode_t mode);
void GB_set_light_temperature(GB_gameboy_t *gb, double temperature);
void GB_set_pixels_output(GB_gameboy_t *gb, uint32_t *output);
unsigned GB_get_screen_width(GB_gameboy_t *gb);
unsigned GB_get_screen_height(GB_gameboy_t *gb);
double GB_get_usual_frame_rate(GB_gameboy_t *gb);
bool GB_is_odd_frame(GB_gameboy_t *gb);
uint32_t GB_convert_rgb15(GB_gameboy_t *gb, uint16_t color, bool for_border);
void GB_draw_tileset(GB_gameboy_t *gb, uint32_t *dest, GB_palette_type_t palette_type, uint8_t palette_index);
void GB_draw_tilemap(GB_gameboy_t *gb, uint32_t *dest, GB_palette_type_t palette_type, uint8_t palette_index, GB_map_type_t map_type, GB_tileset_type_t tileset_type);
uint8_t GB_get_oam_info(GB_gameboy_t *gb, GB_oam_info_t *dest, uint8_t *object_height);
void GB_set_object_rendering_disabled(GB_gameboy_t *gb, bool disabled);
void GB_set_background_rendering_disabled(GB_gameboy_t *gb, bool disabled);
bool GB_is_object_rendering_disabled(GB_gameboy_t *gb);
bool GB_is_background_rendering_disabled(GB_gameboy_t *gb);
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