grub/include/grub/video_fb.h
Vladimir 'phcoder' Serbinenko ba67e2c635 Avoid slow read-back from VRAM.
* include/grub/video_fb.h (grub_video_fb_doublebuf_update_screen_t):
	Move from here ...
	* grub-core/video/fb/video_fb.c
	(grub_video_fb_doublebuf_update_screen_t): ... here. Remove arguments.
	* grub-core/video/fb/video_fb.c (framebuf_t): New type.
	(front_target): Remove front_target. Add pages.
	(grub_video_fb_init): Skip setting front_pages.
	(grub_video_fb_fini): Likewise.
	(doublebuf_blit_update_screen): Use pages.
	(grub_video_fb_doublebuf_blit_init): Likewise.
	(doublebuf_pageflipping_init): Allocate offscreen buffer.
	(doublebuf_pageflipping_update_screen): Use offscreen buffer.
	(grub_video_fb_setup): Prefer doublebuffing.
2012-06-15 23:57:20 +02:00

132 lines
4.2 KiB
C

/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2005,2006,2007,2008 Free Software Foundation, Inc.
*
* GRUB is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GRUB is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GRUB. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GRUB_VIDEO_FB_HEADER
#define GRUB_VIDEO_FB_HEADER 1
#include <grub/symbol.h>
#include <grub/types.h>
#include <grub/err.h>
#include <grub/video.h>
/* FB module internal prototype (should not be used from elsewhere). */
struct grub_video_fbblit_info;
struct grub_video_fbrender_target;
#define GRUB_VIDEO_FBSTD_NUMCOLORS 16
extern struct grub_video_palette_data grub_video_fbstd_colors[GRUB_VIDEO_FBSTD_NUMCOLORS];
grub_err_t
grub_video_fb_init (void);
grub_err_t
grub_video_fb_fini (void);
grub_err_t
grub_video_fb_get_info (struct grub_video_mode_info *mode_info);
grub_err_t
grub_video_fb_get_palette (unsigned int start, unsigned int count,
struct grub_video_palette_data *palette_data);
grub_err_t
grub_video_fb_set_palette (unsigned int start, unsigned int count,
struct grub_video_palette_data *palette_data);
grub_err_t
grub_video_fb_set_viewport (unsigned int x, unsigned int y,
unsigned int width, unsigned int height);
grub_err_t
grub_video_fb_get_viewport (unsigned int *x, unsigned int *y,
unsigned int *width, unsigned int *height);
grub_video_color_t
grub_video_fb_map_color (grub_uint32_t color_name);
grub_video_color_t
grub_video_fb_map_rgb (grub_uint8_t red, grub_uint8_t green,
grub_uint8_t blue);
grub_video_color_t
grub_video_fb_map_rgba (grub_uint8_t red, grub_uint8_t green,
grub_uint8_t blue, grub_uint8_t alpha);
grub_err_t
grub_video_fb_unmap_color (grub_video_color_t color,
grub_uint8_t *red, grub_uint8_t *green,
grub_uint8_t *blue, grub_uint8_t *alpha);
void
grub_video_fb_unmap_color_int (struct grub_video_fbblit_info * source,
grub_video_color_t color,
grub_uint8_t *red, grub_uint8_t *green,
grub_uint8_t *blue, grub_uint8_t *alpha);
grub_err_t
grub_video_fb_fill_rect (grub_video_color_t color, int x, int y,
unsigned int width, unsigned int height);
grub_err_t
grub_video_fb_blit_bitmap (struct grub_video_bitmap *bitmap,
enum grub_video_blit_operators oper, int x, int y,
int offset_x, int offset_y,
unsigned int width, unsigned int height);
grub_err_t
grub_video_fb_blit_render_target (struct grub_video_fbrender_target *source,
enum grub_video_blit_operators oper,
int x, int y, int offset_x, int offset_y,
unsigned int width, unsigned int height);
grub_err_t
grub_video_fb_scroll (grub_video_color_t color, int dx, int dy);
grub_err_t
grub_video_fb_create_render_target (struct grub_video_fbrender_target **result,
unsigned int width, unsigned int height,
unsigned int mode_type __attribute__ ((unused)));
grub_err_t
grub_video_fb_create_render_target_from_pointer (struct grub_video_fbrender_target **result,
const struct grub_video_mode_info *mode_info,
void *ptr);
grub_err_t
grub_video_fb_delete_render_target (struct grub_video_fbrender_target *target);
grub_err_t
grub_video_fb_get_active_render_target (struct grub_video_fbrender_target **target);
grub_err_t
grub_video_fb_set_active_render_target (struct grub_video_fbrender_target *target);
typedef grub_err_t (*grub_video_fb_set_page_t) (int page);
grub_err_t
grub_video_fb_setup (unsigned int mode_type, unsigned int mode_mask,
struct grub_video_mode_info *mode_info,
volatile void *page0_ptr,
grub_video_fb_set_page_t set_page_in,
volatile void *page1_ptr);
grub_err_t
grub_video_fb_swap_buffers (void);
grub_err_t
grub_video_fb_get_info_and_fini (struct grub_video_mode_info *mode_info,
void **framebuf);
#endif /* ! GRUB_VIDEO_FB_HEADER */