M7350/bootable/bootloader/lk/include/lib/gfx.h

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2024-09-09 08:52:07 +00:00
#ifndef __LIB_GFX_H
#define __LIB_GFX_H
#include <sys/types.h>
// gfx library
// different graphics formats
typedef enum {
GFX_FORMAT_RGB_565,
GFX_FORMAT_ARGB_8888,
GFX_FORMAT_RGB_x888,
GFX_FORMAT_MAX
} gfx_format;
#define MAX_ALPHA 255
/**
* @brief Describe a graphics drawing surface
*
* The gfx_surface object represents a framebuffer that can be rendered
* to. Elements include a pointer to the actual pixel memory, its size, its
* layout, and pointers to basic drawing functions.
*
* @ingroup graphics
*/
typedef struct gfx_surface {
void *ptr;
bool free_on_destroy;
gfx_format format;
uint width;
uint height;
uint stride;
uint pixelsize;
size_t len;
uint alpha;
// function pointers
void (*copyrect)(struct gfx_surface *, uint x, uint y, uint width, uint height, uint x2, uint y2);
void (*fillrect)(struct gfx_surface *, uint x, uint y, uint width, uint height, uint color);
void (*putpixel)(struct gfx_surface *, uint x, uint y, uint color);
void (*flush)(uint starty, uint endy);
} gfx_surface;
// copy a rect from x,y with width x height to x2, y2
void gfx_copyrect(gfx_surface *surface, uint x, uint y, uint width, uint height, uint x2, uint y2);
// fill a rect within the surface with a color
void gfx_fillrect(gfx_surface *surface, uint x, uint y, uint width, uint height, uint color);
// draw a pixel at x, y in the surface
void gfx_putpixel(gfx_surface *surface, uint x, uint y, uint color);
// clear the entire surface with a color
static inline void gfx_clear(gfx_surface *surface, uint color)
{
surface->fillrect(surface, 0, 0, surface->width, surface->height, color);
if (surface->flush)
surface->flush(0, surface->height-1);
}
// blend between two surfaces
void gfx_surface_blend(struct gfx_surface *target, struct gfx_surface *source, uint destx, uint desty);
void gfx_flush(struct gfx_surface *surface);
void gfx_flush_rows(struct gfx_surface *surface, uint start, uint end);
// surface setup
gfx_surface *gfx_create_surface(void *ptr, uint width, uint height, uint stride, gfx_format format);
// utility routine to make a surface out of a display info
struct display_info;
gfx_surface *gfx_create_surface_from_display(struct display_info *);
// free the surface
// optionally frees the buffer if the free bit is set
void gfx_surface_destroy(struct gfx_surface *surface);
// utility routine to fill the display with a little moire pattern
void gfx_draw_pattern(void);
#endif