Diff: osd/osd.h

Revision:

0:0a841b89d614

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/osd/osd.h	Mon Oct 11 10:34:55 2010 +0000
@@ -0,0 +1,65 @@
+/****************************************************************************
+ *    Copyright 2010 Andy Kirkham, Stellar Technologies Ltd
+ *    
+ *    This file is part of the Satellite Observers Workbench (SOWB).
+ *
+ *    SOWB 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.
+ *
+ *    SOWB 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 SOWB.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *    $Id: main.cpp 5 2010-07-12 20:51:11Z ajk $
+ *    
+ ***************************************************************************/
+
+#ifndef OSD_H
+#define OSD_H
+
+#include "MAX7456.h"
+
+#define L01_MODE_A    1
+#define L01_MODE_B    2
+#define L01_MODE_C    3
+#define L01_MODE_D    4
+
+/* Define a structure that holds a OSD character line.
+   This is used to basically buffer the line so that it
+   can be displayed during the vertical sync period.
+   Additionally, we hold a binary flag to state whether
+   teh buffer has been updated. That way we know if we
+   don't need to send the buffer to the MAX7456 device
+   if no update to the buffer has occured. */
+   
+typedef struct {
+    bool update;
+    char line_buffer[MAX7456_DISPLAY_LINE_LEN];
+} OSD_display_line;
+
+
+void osd_init(void);
+void osd_clear(void);
+void osd_clear_line(int line);
+void osd_string(int line, char *s);
+void osd_string_xy(int x, int y, char *s);
+void osd_stringl(int line, char *s, int len);
+void osd_string_xyl(int x, int y, char *s, int len);
+
+void osd_set_mode_l01(int mode);
+void osd_l01_next_mode(void);
+int osd_set_crosshair(int mode);
+int osd_crosshair_toggle(void);
+
+void osd_vsync(void);
+
+
+
+#endif
+