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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 16:29:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 16:29:51 +0000 |
commit | 6e7a315eb67cb6c113cf37e1d66c4f11a51a2b3e (patch) | |
tree | 32451fa3cdd9321fb2591fada9891b2cb70a9cd1 /include/grub/fbutil.h | |
parent | Initial commit. (diff) | |
download | grub2-upstream/2.06.tar.xz grub2-upstream/2.06.zip |
Adding upstream version 2.06.upstream/2.06upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | include/grub/fbutil.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/include/grub/fbutil.h b/include/grub/fbutil.h new file mode 100644 index 0000000..4205eb9 --- /dev/null +++ b/include/grub/fbutil.h @@ -0,0 +1,59 @@ +/* + * 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; +}; + +/* Don't use for 1-bit bitmaps, addressing needs to be done at the bit level + and it doesn't make sense, in general, to ask for a pointer + to a particular pixel's data. */ +static inline void * +grub_video_fb_get_video_ptr (struct grub_video_fbblit_info *source, + unsigned int x, unsigned int y) +{ + return source->data + y * source->mode_info->pitch + x * source->mode_info->bytes_per_pixel; +} + +/* 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 */ |