Diff: OSD7456.cpp

Revision:

0:d7cd54ad4c3d

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/OSD7456.cpp	Tue Nov 16 10:47:25 2010 +0000
@@ -0,0 +1,108 @@
+/*
+    Copyright (c) 2010 Andy Kirkham
+ 
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to deal
+    in the Software without restriction, including without limitation the rights
+    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+ 
+    The above copyright notice and this permission notice shall be included in
+    all copies or substantial portions of the Software.
+ 
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+    THE SOFTWARE.
+*/
+
+#include "mbed.h"
+#include "OSD7456.h"
+
+void
+OSD7456::init(void)
+{
+    for (int i = 0; i < OSD_NUM_LINES; i++) { clear(i); } 
+    oddEven = false;   
+    max7456->vsync_set_callback(this, &OSD7456::vsync);
+}
+
+void
+OSD7456::clear(int line)
+{
+    lines[line].updated = true;
+    memset(lines[line].line, ' ', OSD_LINE_LEN);
+    memset(lines[line].attrib, 0, OSD_LINE_LEN);
+}
+
+void 
+OSD7456::vsync(void)
+{
+    if (oddEven) {
+        oddEven = false;
+    }
+    else {
+        for (int i = 0; i < OSD_NUM_LINES; i++) {
+            if (lines[i].updated) {
+                max7456->stringxy(0, i, lines[i].line, lines[i].attrib);
+                lines[i].updated = false;
+            }
+        }
+        oddEven = true;
+        cb_vsync.call();
+    }
+}
+
+int 
+OSD7456::print(int line, char *s) 
+{ 
+    int i = 0; 
+    while (*s != '\0') { 
+        lines[line].line[i] = *s; 
+        s++; i++; 
+    } 
+    lines[line].updated = true; 
+    return i; 
+}
+ 
+int 
+OSD7456::print(int line, char *s, char attrib) 
+{ 
+    int i = 0; 
+    while (*s != '\0') { 
+        lines[line].line[i] = *s; 
+        lines[line].attrib[i] = attrib; 
+        s++; i++; 
+    } 
+    lines[line].updated = true; 
+    return i; 
+}
+
+int 
+OSD7456::print(int x, int y, char *s) 
+{ 
+    int i = 0; 
+    while (*s != '\0') { 
+        lines[y].line[i+x] = *s; 
+        s++; i++; 
+    } 
+    lines[y].updated = true; 
+    return i; 
+}
+
+int 
+OSD7456::print(int x, int y, char *s, char attrib) 
+{ 
+    int i = 0; 
+    while (*s != '\0') { 
+        lines[y].line[i+x] = *s; 
+        lines[y].attrib[i+x] = attrib; 
+        s++; i++; 
+    } 
+    lines[y].updated = true; 
+    return i; 
+}