--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/fontservices/textshaperplugin/IcuSource/layout/DeviceTables.cpp	Tue Feb 02 02:02:46 2010 +0200
@@ -0,0 +1,44 @@
+/*
+ * @(#)DeviceTables.cpp 1.5 00/03/15
+ *
+ * (C) Copyright IBM Corp. 1998 - 2005 - All Rights Reserved
+ *
+ */
+
+#include "LETypes.h"
+#include "OpenTypeTables.h"
+#include "DeviceTables.h"
+#include "LESwaps.h"
+
+U_NAMESPACE_BEGIN
+
+const le_uint16 DeviceTable::fieldMasks[]    = {0x0003, 0x000F, 0x00FF};
+const le_uint16 DeviceTable::fieldSignBits[] = {0x0002, 0x0008, 0x0080};
+const le_uint16 DeviceTable::fieldBits[]     = {     2,      4,      8};
+
+le_int16 DeviceTable::getAdjustment(le_uint16 ppem) const
+{
+    le_uint16 start = SWAPW(startSize);
+    le_uint16 format = SWAPW(deltaFormat) - 1;
+    le_int16 result = 0;
+    
+    if (ppem >= start && ppem <= SWAPW(endSize)) {
+        le_uint16 sizeIndex = ppem - start;
+        le_uint16 bits = fieldBits[format];
+        le_uint16 count = 16 / bits;
+        le_uint16 word = SWAPW(deltaValues[sizeIndex / count]);
+        le_uint16 fieldIndex = sizeIndex % count;
+        le_uint16 shift = 16 - (bits * (fieldIndex + 1));
+        le_uint16 field = (word >> shift) & fieldMasks[format];
+
+        result = field;
+
+        if ((field & fieldSignBits[format]) != 0) {
+            result |= ~ fieldMasks[format];
+        }
+    }
+
+    return result;
+}
+
+U_NAMESPACE_END