1 files changed, 65 insertions, 0 deletions
diff --git a/firmware/lib/include/bmpblk_font.h b/firmware/lib/include/bmpblk_font.h
new file mode 100644
index 00000000..1ffaefda
--- /dev/null
+++ b/firmware/lib/include/bmpblk_font.h
@@ -0,0 +1,65 @@
+/* Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ *
+ * This describes the internal format used to pack a set of character glpyhs so
+ * we can render strings by drawing one character at a time.
+ *
+ * The format is this:
+ *
+ *   +-------------------------+
+ *   | FontArrayHeader         |
+ *   +-------------------------+
+ *   | FontArrayEntryHeader[0] |
+ *   +-------------------------+
+ *   | raw image data[0]       |
+ *   +-------------------------+
+ *   | FontArrayEntryHeader[1] |
+ *   +-------------------------+
+ *   | raw image data[1]       |
+ *   +-------------------------+
+ *   | FontArrayEntryHeader[2] |
+ *   +-------------------------+
+ *   | raw image data[2]       |
+ *   +-------------------------+
+ *      ...
+ *   +-------------------------+
+ *   | FontArrayEntryHeader[n] |
+ *   +-------------------------+
+ *   | raw image data[n]       |
+ *   +-------------------------+
+ *
+ * The FontArrayHeader describes how many characters will be encoded.
+ * Each character encoding consists of a FontArrayEntryHeader followed
+ * immediately by the raw image data for that character.
+ */
+
+#ifndef VBOOT_REFERENCE_BMPBLK_FONT_H_
+#define VBOOT_REFERENCE_BMPBLK_FONT_H_
+
+#include "bmpblk_header.h"
+
+__pragma(pack(push, 1))  /* Support packing for MSVC. */
+
+#define FONT_SIGNATURE      "FONT"
+#define FONT_SIGNATURE_SIZE 4
+
+typedef struct FontArrayHeader {
+  uint8_t  signature[FONT_SIGNATURE_SIZE];
+  uint32_t num_entries;                 /* Number of chars encoded here. */
+} __attribute__((packed)) FontArrayHeader;
+
+typedef struct FontArrayEntryHeader {
+  uint32_t ascii;                       /* What to show. Could even be UTF? */
+  ImageInfo info;                       /* Describes the bitmap. */
+  /* The image to use follows immediately, NOT compressed. It's uncompressed
+   * because each glyph is only a few hundred bytes, but they have much in
+   * common (colormaps, for example). When we add the whole font blob to the
+   * bmpblk, it will be compressed as a single item there.
+  */
+} __attribute__((packed)) FontArrayEntryHeader;
+
+
+__pragma(pack(pop)) /* Support packing for MSVC. */
+
+#endif  /* VBOOT_REFERENCE_BMPBLK_FONT_H_ */