From dd7d69515391322e37215fad385ff2c59f80a68b Mon Sep 17 00:00:00 2001
From: Björn Stenberg <bjorn@haxx.se>
Date: Sun, 11 Aug 2002 09:22:40 +0000
Subject: Forgot to add the new files

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@1668 a1c6a512-1295-4272-9138-f99709370657
---
 firmware/ajf.c | 101 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100644 firmware/ajf.c

(limited to 'firmware/ajf.c')

diff --git a/firmware/ajf.c b/firmware/ajf.c
new file mode 100644
index 0000000000..e542bdc81e
--- /dev/null
+++ b/firmware/ajf.c
@@ -0,0 +1,101 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2002 by Alex Gitelman
+ *
+ * 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.
+ *
+ ****************************************************************************/
+#ifdef SIMULATOR
+#include <fcntl.h>
+#endif
+#include <file.h>
+#include "ajf.h"
+#include <malloc.h>
+#include <string.h>
+#include <errno.h>
+#include <stdbool.h>
+#include "debug.h"
+
+static unsigned char font_buf[MAX_FONT_BUFLEN];
+
+unsigned char* ajf_read_font(char* fname)
+{
+    int count;
+#ifdef WIN32
+    int fd = open(fname, O_RDONLY|O_BINARY);
+#else
+    int fd = open(fname, O_RDONLY);
+#endif
+    if (fd<0)
+    {
+#ifdef SIMULATOR
+#ifdef WIN32
+        DEBUGF("Failed opening font file: %d %s. ", _errno(), fname);
+#else
+        DEBUGF("Failed opening font file: %d %s. ", errno, fname);
+#endif
+#endif
+        return NULL;
+    }
+
+    count = read(fd, font_buf, MAX_FONT_BUFLEN);
+    if (count==MAX_FONT_BUFLEN) {
+        DEBUGF("Font is larger than allocated %d bytes!\n",MAX_FONT_BUFLEN);
+        return NULL;
+    }
+    close(fd);
+
+    if (font_buf[0]!=MAGIC1 || font_buf[1]!=MAGIC2) {
+        DEBUGF("Bad magic word in font");
+        return NULL;
+    }
+    return font_buf;
+}
+
+
+unsigned char* ajf_get_charbuf(unsigned char c, unsigned char* font, 
+                               int *w, int *h)
+{
+    int height = READ_SHORT(&font[HEIGHT_OFFSET]);
+    int size = READ_SHORT(&font[SIZE_OFFSET]);
+    int chars_offset = LOOKUP_MAP_OFFSET + size*3;
+    int rows = (height-1)/8 + 1;
+    int first_char = READ_SHORT(&font[FIRST_CHAR_OFFSET]); 
+    int map_idx = LOOKUP_MAP_OFFSET + (c-first_char)*3;
+    int byte_count = font[map_idx];
+    int char_idx;
+
+    *h = height;
+    *w = byte_count/rows;
+
+    map_idx++;
+    char_idx = READ_SHORT(&font[map_idx]);
+    return &font[chars_offset + char_idx];
+}
+
+void ajf_get_charsize(unsigned char c, unsigned char* font, 
+                      int *width, int *height)
+{
+    int first_char = READ_SHORT(&font[FIRST_CHAR_OFFSET]); 
+    int map_idx = LOOKUP_MAP_OFFSET + (c-first_char)*3;
+    int rows = 1;
+    *height = READ_SHORT(&font[HEIGHT_OFFSET]);
+    rows = (*height-1)/8 + 1;
+    *width = font[map_idx]/rows;
+}
+
+int ajf_get_fontheight(unsigned char* font)
+{
+    return READ_SHORT(&font[HEIGHT_OFFSET]);
+}
-- 
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