1 files changed, 85 insertions, 0 deletions
diff --git a/include/grub/bitmap_scale.h b/include/grub/bitmap_scale.h
new file mode 100644
index 0000000..927a7cb
--- /dev/null
+++ b/include/grub/bitmap_scale.h
@@ -0,0 +1,85 @@
+/* bitmap_scale.h - Bitmap scaling functions. */
+/*
+ *  GRUB  --  GRand Unified Bootloader
+ *  Copyright (C) 2008,2009  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_BITMAP_SCALE_HEADER
+#define GRUB_BITMAP_SCALE_HEADER 1
+
+#include <grub/err.h>
+#include <grub/types.h>
+#include <grub/bitmap_scale.h>
+
+enum grub_video_bitmap_scale_method
+{
+  /* Choose the fastest interpolation algorithm.  */
+  GRUB_VIDEO_BITMAP_SCALE_METHOD_FASTEST,
+  /* Choose the highest quality interpolation algorithm.  */
+  GRUB_VIDEO_BITMAP_SCALE_METHOD_BEST,
+
+  /* Specific algorithms:  */
+  /* Nearest neighbor interpolation.  */
+  GRUB_VIDEO_BITMAP_SCALE_METHOD_NEAREST,
+  /* Bilinear interpolation.  */
+  GRUB_VIDEO_BITMAP_SCALE_METHOD_BILINEAR
+};
+
+typedef enum grub_video_bitmap_selection_method
+{
+  GRUB_VIDEO_BITMAP_SELECTION_METHOD_STRETCH,
+  GRUB_VIDEO_BITMAP_SELECTION_METHOD_CROP,
+  GRUB_VIDEO_BITMAP_SELECTION_METHOD_PADDING,
+  GRUB_VIDEO_BITMAP_SELECTION_METHOD_FITWIDTH,
+  GRUB_VIDEO_BITMAP_SELECTION_METHOD_FITHEIGHT
+} grub_video_bitmap_selection_method_t;
+
+typedef enum grub_video_bitmap_v_align
+{
+  GRUB_VIDEO_BITMAP_V_ALIGN_TOP,
+  GRUB_VIDEO_BITMAP_V_ALIGN_CENTER,
+  GRUB_VIDEO_BITMAP_V_ALIGN_BOTTOM
+} grub_video_bitmap_v_align_t;
+
+typedef enum grub_video_bitmap_h_align
+{
+  GRUB_VIDEO_BITMAP_H_ALIGN_LEFT,
+  GRUB_VIDEO_BITMAP_H_ALIGN_CENTER,
+  GRUB_VIDEO_BITMAP_H_ALIGN_RIGHT
+} grub_video_bitmap_h_align_t;
+
+grub_err_t
+EXPORT_FUNC (grub_video_bitmap_create_scaled) (struct grub_video_bitmap **dst,
+					       int dst_width, int dst_height,
+					       struct grub_video_bitmap *src,
+					       enum 
+					       grub_video_bitmap_scale_method
+					       scale_method);
+
+grub_err_t
+EXPORT_FUNC (grub_video_bitmap_scale_proportional)
+                                     (struct grub_video_bitmap **dst,
+                                      int dst_width, int dst_height,
+                                      struct grub_video_bitmap *src,
+                                      enum grub_video_bitmap_scale_method
+                                      scale_method,
+                                      grub_video_bitmap_selection_method_t
+                                      selection_method,
+                                      grub_video_bitmap_v_align_t v_align,
+                                      grub_video_bitmap_h_align_t h_align);
+
+
+#endif /* ! GRUB_BITMAP_SCALE_HEADER */