1 files changed, 116 insertions, 0 deletions

diff --git a/firmware/export/font.h b/firmware/export/font.h
new file mode 100644
index 0000000000..b45fccbbde
--- /dev/null
+++ b/firmware/export/font.h
@@ -0,0 +1,116 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (c) 2002 by Greg Haerr <greg@censoft.com>
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+/*
+ * Incore font and image definitions
+ */
+#include "config.h"
+
+#if defined(HAVE_LCD_BITMAP) || defined(SIMULATOR)
+
+/* max static loadable fonts buffer*/
+#ifndef MAX_FONT_SIZE
+#define MAX_FONT_SIZE   9000    /* max total fontsize allocation*/
+#endif
+
+/*
+ * Fonts are specified by number, and used for display
+ * of menu information as well as mp3 filename data.
+ * At system startup, up to MAXFONTS fonts are initialized,
+ * either by being compiled-in, or loaded from disk.
+ * If the font asked for does not exist, then the
+ * system uses the next lower font number.  Font 0
+ * must be available at system startup.
+ * Fonts are specified in firmware/font.c.
+ */
+enum {
+    FONT_SYSFIXED, /* system fixed pitch font*/
+    FONT_UI,       /* system porportional font*/
+    MAXFONTS
+};
+
+/*
+ * .fnt loadable font file format definition
+ *
+ * format                     len       description
+ * -------------------------  ----      ------------------------------
+ * UCHAR version[4]             4       magic number and version bytes
+ * UCHAR name[64]              64       font name, space padded
+ * UCHAR copyright[256]       256       copyright info, space padded
+ * USHORT maxwidth              2       font max width in pixels
+ * USHORT height                2       font height in pixels
+ * USHORT ascent                2       font ascent (baseline) in pixels
+ * USHORT pad                   2       unused, pad to 32-bit boundary
+ * ULONG firstchar              4       first character code in font
+ * ULONG defaultchar            4       default character code in font
+ * ULONG size                   4       # characters in font
+ * ULONG nbits                  4       # words imagebits data in file
+ * ULONG noffset                4       # longs offset data in file
+ * ULONG nwidth                 4       # bytes width data in file
+ * MWIMAGEBITS bits       nbits*2       image bits variable data
+ * [MWIMAGEBITS padded to 32-bit boundary]
+ * ULONG offset         noffset*4       offset variable data
+ * UCHAR width           nwidth*1       width variable data
+ */
+
+/* loadable font magic and version #*/
+#define VERSION         "RB11"
+
+typedef unsigned short bitmap_t; /* bitmap image unit size*/
+
+/* bitmap_t helper macros*/
+#define BITMAP_WORDS(x)         (((x)+15)/16)   /* image size in words*/
+#define BITMAP_BYTES(x)         (BITMAP_WORDS(x)*sizeof(bitmap_t))
+#define BITMAP_BITSPERIMAGE     (sizeof(bitmap_t) * 8)
+#define BITMAP_BITVALUE(n)      ((bitmap_t) (((bitmap_t) 1) << (n)))
+#define BITMAP_FIRSTBIT         (BITMAP_BITVALUE(BITMAP_BITSPERIMAGE - 1))
+#define BITMAP_TESTBIT(m)       ((m) & BITMAP_FIRSTBIT)
+#define BITMAP_SHIFTBIT(m)      ((bitmap_t) ((m) << 1))
+
+/* builtin C-based proportional/fixed font structure */
+/* based on The Microwindows Project http://microwindows.org */
+struct font {
+    char *      name;           /* font name*/
+    int         maxwidth;       /* max width in pixels*/
+    unsigned int height;        /* height in pixels*/
+    int         ascent;         /* ascent (baseline) height*/
+    int         firstchar;      /* first character in bitmap*/
+    int         size;           /* font size in glyphs*/
+    bitmap_t *bits;             /* 16-bit right-padded bitmap data*/
+    unsigned long *offset;      /* offsets into bitmap data*/
+    unsigned char *width;       /* character widths or NULL if fixed*/
+    int         defaultchar;    /* default char (not glyph index)*/
+    long        bits_size;      /* # words of bitmap_t bits*/
+};
+
+/* font routines*/
+void font_init(void);
+struct font* font_load(char *path);
+struct font* font_get(int font);
+void font_reset(void);
+
+#else /* HAVE_LCD_BITMAP */
+
+#define font_init()
+#define font_load(x)
+
+#endif
+
+/* -----------------------------------------------------------------
+ * vim: et sw=4 ts=8 sts=4 tw=78
+ */