summaryrefslogtreecommitdiffstats
path: root/include/grub/bitmap_scale.h
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--include/grub/bitmap_scale.h85
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 */