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#ifndef __VGAFB_H
#define __VGAFB_H
// Graphics pixel operations.
struct gfx_op {
struct vgamode_s *vmode_g;
u32 linelength;
u32 displaystart;
u8 op;
u16 x, y;
u8 pixels[8];
u16 xlen, ylen;
u16 srcy;
};
#define GO_READ8 1
#define GO_WRITE8 2
#define GO_MEMSET 3
#define GO_MEMMOVE 4
struct cursorpos {
u8 x, y, page, pad;
};
struct carattr {
u8 car, attr, use_attr, pad;
};
// vgafb.c
void init_gfx_op(struct gfx_op *op, struct vgamode_s *vmode_g);
void handle_gfx_op(struct gfx_op *op);
void *text_address(struct cursorpos cp);
void vgafb_scroll(struct cursorpos win, struct cursorpos winsize
, int lines, struct carattr ca);
void vgafb_write_char(struct cursorpos cp, struct carattr ca);
struct carattr vgafb_read_char(struct cursorpos cp);
void vgafb_write_pixel(u8 color, u16 x, u16 y);
u8 vgafb_read_pixel(u16 x, u16 y);
#endif // vgafb.h
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