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 */