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

   1 /* bitmap_scale.h - Bitmap scaling functions. */
   2 /*
   3  *  GRUB  --  GRand Unified Bootloader
   4  *  Copyright (C) 2008,2009  Free Software Foundation, Inc.
   5  *
   6  *  GRUB is free software: you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation, either version 3 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  GRUB is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with GRUB.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20 #ifndef GRUB_BITMAP_SCALE_HEADER
  21 #define GRUB_BITMAP_SCALE_HEADER 1
  22
  23 #include <grub/err.h>
  24 #include <grub/types.h>
  25 #include <grub/bitmap_scale.h>
  26
  27 enum grub_video_bitmap_scale_method
  28 {
  29   /* Choose the fastest interpolation algorithm.  */
  30   GRUB_VIDEO_BITMAP_SCALE_METHOD_FASTEST,
  31   /* Choose the highest quality interpolation algorithm.  */
  32   GRUB_VIDEO_BITMAP_SCALE_METHOD_BEST,
  33
  34   /* Specific algorithms:  */
  35   /* Nearest neighbor interpolation.  */
  36   GRUB_VIDEO_BITMAP_SCALE_METHOD_NEAREST,
  37   /* Bilinear interpolation.  */
  38   GRUB_VIDEO_BITMAP_SCALE_METHOD_BILINEAR
  39 };
  40
  41 typedef enum grub_video_bitmap_selection_method
  42 {
  43   GRUB_VIDEO_BITMAP_SELECTION_METHOD_STRETCH,
  44   GRUB_VIDEO_BITMAP_SELECTION_METHOD_CROP,
  45   GRUB_VIDEO_BITMAP_SELECTION_METHOD_PADDING,
  46   GRUB_VIDEO_BITMAP_SELECTION_METHOD_FITWIDTH,
  47   GRUB_VIDEO_BITMAP_SELECTION_METHOD_FITHEIGHT
  48 } grub_video_bitmap_selection_method_t;
  49
  50 typedef enum grub_video_bitmap_v_align
  51 {
  52   GRUB_VIDEO_BITMAP_V_ALIGN_TOP,
  53   GRUB_VIDEO_BITMAP_V_ALIGN_CENTER,
  54   GRUB_VIDEO_BITMAP_V_ALIGN_BOTTOM
  55 } grub_video_bitmap_v_align_t;
  56
  57 typedef enum grub_video_bitmap_h_align
  58 {
  59   GRUB_VIDEO_BITMAP_H_ALIGN_LEFT,
  60   GRUB_VIDEO_BITMAP_H_ALIGN_CENTER,
  61   GRUB_VIDEO_BITMAP_H_ALIGN_RIGHT
  62 } grub_video_bitmap_h_align_t;
  63
  64 grub_err_t
  65 EXPORT_FUNC (grub_video_bitmap_create_scaled) (struct grub_video_bitmap **dst,
  66                                                int dst_width, int dst_height,
  67                                                struct grub_video_bitmap *src,
  68                                                enum
  69                                                grub_video_bitmap_scale_method
  70                                                scale_method);
  71
  72 grub_err_t
  73 EXPORT_FUNC (grub_video_bitmap_scale_proportional)
  74                                      (struct grub_video_bitmap **dst,
  75                                       int dst_width, int dst_height,
  76                                       struct grub_video_bitmap *src,
  77                                       enum grub_video_bitmap_scale_method
  78                                       scale_method,
  79                                       grub_video_bitmap_selection_method_t
  80                                       selection_method,
  81                                       grub_video_bitmap_v_align_t v_align,
  82                                       grub_video_bitmap_h_align_t h_align);
  83
  84
  85 #endif /* ! GRUB_BITMAP_SCALE_HEADER */