Start on DMR rate 3/4 data.

DMRTrellis.h

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+/*
+*	Copyright (C) 2016 by Jonathan Naylor, G4KLX
+*
+*	This program 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; version 2 of the License.
+*
+*	This program 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.
+*/
+
+#ifndef	DMRTrellis_H
+#define	DMRTrellis_H
+
+class CDMRTrellis {
+public:
+	CDMRTrellis();
+	~CDMRTrellis();
+
+	void decode(const unsigned char* data, unsigned char* payload);
+	void encode(const unsigned char* payload, unsigned char* data);
+
+private:
+	void deinterleave(const unsigned char* in, unsigned char* points) const;
+	void interleave(const unsigned char* points, unsigned char* out) const;
+	void totribits(const unsigned char* payload, unsigned char* tribits) const;
+};
+
+#endif