arch/all-pc/boot/grub2-aros/include/grub/fbutil.h

   1 /*
   2  *  GRUB  --  GRand Unified Bootloader
   3  *  Copyright (C) 2006,2007  Free Software Foundation, Inc.
   4  *
   5  *  GRUB is free software: you can redistribute it and/or modify
   6  *  it under the terms of the GNU General Public License as published by
   7  *  the Free Software Foundation, either version 3 of the License, or
   8  *  (at your option) any later version.
   9  *
  10  *  GRUB is distributed in the hope that it will be useful,
  11  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  *  GNU General Public License for more details.
  14  *
  15  *  You should have received a copy of the GNU General Public License
  16  *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18
  19 /* NOTE: This header is private header for vbe driver and should not be used
  20    in other parts of the code.  */
  21
  22 #ifndef GRUB_VBEUTIL_MACHINE_HEADER
  23 #define GRUB_VBEUTIL_MACHINE_HEADER     1
  24
  25 #include <grub/types.h>
  26 #include <grub/video.h>
  27
  28 struct grub_video_fbblit_info
  29 {
  30   struct grub_video_mode_info *mode_info;
  31   grub_uint8_t *data;
  32 };
  33
  34 /* Don't use for 1-bit bitmaps, addressing needs to be done at the bit level
  35    and it doesn't make sense, in general, to ask for a pointer
  36    to a particular pixel's data.  */
  37 static inline void *
  38 grub_video_fb_get_video_ptr (struct grub_video_fbblit_info *source,
  39               unsigned int x, unsigned int y)
  40 {
  41   return source->data + y * source->mode_info->pitch + x * source->mode_info->bytes_per_pixel;
  42 }
  43
  44 /* Advance pointer by VAL bytes. If there is no unaligned access available,
  45    VAL has to be divisible by size of pointed type.
  46  */
  47 #ifdef GRUB_HAVE_UNALIGNED_ACCESS
  48 #define GRUB_VIDEO_FB_ADVANCE_POINTER(ptr, val) ((ptr) = (typeof (ptr)) ((char *) ptr + val))
  49 #else
  50 #define GRUB_VIDEO_FB_ADVANCE_POINTER(ptr, val) ((ptr) += (val) / sizeof (*(ptr)))
  51 #endif
  52
  53 grub_video_color_t get_pixel (struct grub_video_fbblit_info *source,
  54                               unsigned int x, unsigned int y);
  55
  56 void set_pixel (struct grub_video_fbblit_info *source,
  57                 unsigned int x, unsigned int y, grub_video_color_t color);
  58
  59 #endif /* ! GRUB_VBEUTIL_MACHINE_HEADER */