grub/include/grub/fbutil.h
Vladimir 'phcoder' Serbinenko 12e9d4d152 Fix video on platforms where unaligned access is forbidden.
Make several optimisations while on it.

	* grub-core/video/fb/fbblit.c (grub_video_fbblit_replace_directN):
	Optimise and use GRUB_VIDEO_FB_ADVANCE_POINTER.
	(grub_video_fbblit_replace_32bit_1bit): Likewise.
	(grub_video_fbblit_replace_24bit_1bit) [!GRUB_HAVE_UNALIGNED_ACCESS]:
	Disable.
	(grub_video_fbblit_replace_16bit_1bit):
	Optimise and use GRUB_VIDEO_FB_ADVANCE_POINTER.
	(grub_video_fbblit_replace_8bit_1bit): Likewise.
	(grub_video_fbblit_replace_BGRX8888_RGBX8888): Likewise.
	(grub_video_fbblit_replace_BGRX8888_RGB888): Likewise.
	(grub_video_fbblit_replace_BGR888_RGBX8888): Likewise.
	(grub_video_fbblit_replace_BGR888_RGBX8888): Likewise.
	(grub_video_fbblit_replace_BGR888_RGB888): Likewise.
	(grub_video_fbblit_replace_RGBX8888_RGB88): Likewise.
	(grub_video_fbblit_replace_RGB888_RGBX888): Likewise.
	(grub_video_fbblit_replace_RGB888_RGBX8888): Likewise.
	(grub_video_fbblit_replace_index_RGBX8888): Likewise.
	(grub_video_fbblit_replace_index_RGB888): Likewise.
	(grub_video_fbblit_blend_BGRA8888_RGBA8888): Likewise.
	(grub_video_fbblit_blend_BGR888_RGBA8888): Likewise.
	(grub_video_fbblit_blend_RGBA8888_RGBA8888): Likewise.
	(grub_video_fbblit_blend_RGB888_RGBA8888): Likewise.
	(grub_video_fbblit_blend_index_RGBA8888): Likewise.
	(grub_video_fbblit_blend_XXXA8888_1bit): Likewise.
	(grub_video_fbblit_blend_XXX888_1bit) [!GRUB_HAVE_UNALIGNED_ACCESS]:
	Disable.
	(grub_video_fbblit_blend_XXX565_1bit):
	Optimise and use GRUB_VIDEO_FB_ADVANCE_POINTER.
	* grub-core/video/fb/fbfill.c (grub_video_fbfill_direct32): Likewise.
	* grub-core/video/fb/fbutil.c (grub_video_fb_get_video_ptr): Return
	void *.
	* grub-core/video/fb/video_fb.c (common_blitter)
	[!GRUB_HAVE_UNALIGNED_ACCESS]: Skip disabled blitters.
	(grub_video_fb_create_render_target_from_pointer)
	[!GRUB_HAVE_UNALIGNED_ACCESS]: Check alignment.
	* include/grub/fbutil.h (grub_video_fb_get_video_ptr): Return void *.
	* include/grub/i386/types.h (GRUB_HAVE_UNALIGNED_ACCESS): New
	definition.
	* include/grub/x86_64/types.h (GRUB_HAVE_UNALIGNED_ACCESS): Likewise.
2011-12-13 20:07:33 +01:00

52 lines
1.8 KiB
C

/*
* GRUB -- GRand Unified Bootloader
* Copyright (C) 2006,2007 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/>.
*/
/* NOTE: This header is private header for vbe driver and should not be used
in other parts of the code. */
#ifndef GRUB_VBEUTIL_MACHINE_HEADER
#define GRUB_VBEUTIL_MACHINE_HEADER 1
#include <grub/types.h>
#include <grub/video.h>
struct grub_video_fbblit_info
{
struct grub_video_mode_info *mode_info;
grub_uint8_t *data;
};
void *grub_video_fb_get_video_ptr (struct grub_video_fbblit_info *source,
unsigned int x, unsigned int y);
/* Advance pointer by VAL bytes. If there is no unaligned access available,
VAL has to be divisible by size of pointed type.
*/
#ifdef GRUB_HAVE_UNALIGNED_ACCESS
#define GRUB_VIDEO_FB_ADVANCE_POINTER(ptr, val) ((ptr) = (typeof (ptr)) ((char *) ptr + val))
#else
#define GRUB_VIDEO_FB_ADVANCE_POINTER(ptr, val) ((ptr) += (val) / sizeof (*(ptr)))
#endif
grub_video_color_t get_pixel (struct grub_video_fbblit_info *source,
unsigned int x, unsigned int y);
void set_pixel (struct grub_video_fbblit_info *source,
unsigned int x, unsigned int y, grub_video_color_t color);
#endif /* ! GRUB_VBEUTIL_MACHINE_HEADER */