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#ifndef MELVIX_VESA_H
#define MELVIX_VESA_H
#include <stdint.h>
#include <kernel/system.h>
/**
* The CPUs response to the 0x4F00 call
* Used to receive the supported video modes
*/
struct vbe_info {
char signature[4];
uint16_t version;
uint32_t oem;
uint32_t capabilities;
uint32_t video_modes;
uint16_t video_memory;
uint16_t software_rev;
uint32_t vendor;
uint32_t product_name;
uint32_t product_rev;
char reserved[222];
char oem_data[256];
} __attribute__((packed));
/**
* The CPUs response to the 0x4F01 call
* Used to get information about a specific video mode code
*/
struct vbe_mode_info_all {
uint16_t attributes;
uint8_t window_a;
uint8_t window_b;
uint16_t granularity;
uint16_t window_size;
uint16_t segment_a;
uint16_t segment_b;
uint32_t win_func_ptr;
uint16_t pitch;
uint16_t width;
uint16_t height;
uint8_t w_char;
uint8_t y_char;
uint8_t planes;
uint8_t bpp;
uint8_t banks;
uint8_t memory_model;
uint8_t bank_size;
uint8_t image_pages;
uint8_t reserved0;
uint8_t red_mask;
uint8_t red_position;
uint8_t green_mask;
uint8_t green_position;
uint8_t blue_mask;
uint8_t blue_position;
uint8_t reserved_mask;
uint8_t reserved_position;
uint8_t direct_color_attributes;
uint32_t framebuffer;
uint32_t off_screen_mem_off;
uint16_t off_screen_mem_size;
uint8_t reserved1[206];
} __attribute__((packed));
struct vbe_mode_info {
uint16_t attributes;
uint16_t pitch;
uint16_t width;
uint16_t height;
uint8_t bpp;
uint8_t memory_model;
uint32_t framebuffer;
} __attribute__((packed));
/**
* Set the video mode to a specified resolution using
* a video mode code
* @param mode The requested video mode code from 0x4F00 call
*/
void vbe_set_mode(unsigned short mode);
/**
* Find the highest resolution using 0x4F00 and call
* vbe_set_mode using the video_modes far_ptr
*/
void set_optimal_resolution();
/**
* Sets one of the fonts inside the font header file
* @param height The desired font height
*/
void vesa_set_font(int height);
/**
* Draws a single char
* @param ch The char
*/
void vesa_draw_char(char ch);
/**
* Draw a char from keyboard
* @param ch The character
*/
void vesa_keyboard_char(char ch);
/**
* Draw a string in VESA mode
* @param data The string
*/
void vesa_draw_string(const char *data);
/**
* Draw a number in VESA mode
* @param n The number
*/
void vesa_draw_number(int n);
/**
* Updates the cursor
* @param x The X position
* @param y The Y position
*/
void vesa_draw_cursor(int x, int y);
/**
* Sets the color using a rgb number
* @param color The color
*/
void vesa_set_color(uint32_t color);
/**
* An enum with vesa colors
* From https://github.com/joshdick/onedark.vim/ License: MIT
*/
enum vesa_color {
vesa_black = 0x1d1f24,
vesa_red = 0xE06C75,
vesa_green = 0x98C379,
vesa_yellow = 0xE5C07B,
vesa_blue = 0x61AFEF,
vesa_magenta = 0xC678DD,
vesa_cyan = 0x56B6C2,
vesa_white = 0xABB2BF,
vesa_dark_black = 0x3E4452,
vesa_dark_red = 0xBE5046,
vesa_dark_green = 0x98C379,
vesa_dark_yellow = 0xD19A66,
vesa_dark_blue = 0x61AFEF,
vesa_dark_magenta = 0xC678DD,
vesa_dark_cyan = 0x56B6C2,
vesa_dark_white = 0x5C6370,
};
/**
* The default text color
*/
const uint32_t default_text_color;
/**
* The current text color (as normalized array)
*/
uint32_t terminal_color[3];
/**
* The current input
*/
char text[1024];
/**
* The current video mode
*/
struct vbe_mode_info *current_mode_info;
/**
* The width of the current video mode
*/
int vbe_width;
/**
* The height of the current video mode
*/
int vbe_height;
/**
* The pitch (bytes per line) of the current video mode
*/
int vbe_pitch;
/**
* The bytes per line (pixel width) of the current video mode
*/
int vbe_bpl;
/**
* The framebuffer interface
*/
uint8_t *fb;
uint8_t *cursor_buffer;
#endif
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