X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;ds=sidebyside;f=source%2Fcodecutils.cpp;fp=source%2Fcodecutils.cpp;h=6afbf95850356e61e3c4738e4029f3d1921f18f1;hb=c88a239ff3b218ad0226e8c53356350ccc1f7014;hp=0000000000000000000000000000000000000000;hpb=f47bc86e6ce900c5323e593db003c93110538268;p=libs%2Fcore.git

diff --git a/source/codecutils.cpp b/source/codecutils.cpp
new file mode 100644
index 0000000..6afbf95
--- /dev/null
+++ b/source/codecutils.cpp
@@ -0,0 +1,27 @@
+/* $Id$
+
+This file is part of libmspstrings
+Copyright © 2006-2007 Mikko Rasa
+Distributed under the LGPL
+*/
+
+#include "codecutils.h"
+
+namespace Msp {
+namespace Codecs {
+
+int transform_mapping_or_direct(const int *mapping, unsigned map_size, int ch, bool reverse)
+{
+	for(unsigned i=0; i<map_size*2; i+=2)
+	{
+		if(mapping[i+reverse]==ch)
+			return mapping[i+1-reverse];
+		else if(mapping[i+1-reverse]==ch)
+			return -1;
+	}
+
+	return ch;
+}
+
+} // namespace Codecs
+} // namespace Msp