+/* huffman_codes.h
+ Copyright (C) 2008, Francisco Claude, all rights reserved.
+
+ Wrapper for huff written by Gonzalo Navarro
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ This library 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+*/
#ifndef HUFFMAN_CODES_H
#define HUFFMAN_CODES_H
#include <basics.h>
#include <huff.h>
+/** Wrapper for the canonical huffman implementation of Gonzalo Navarro.
+ *
+ * @author Francisco Claude
+ */
class huffman_codes {
public:
+ /** Creates the codes for the sequence seq of length n */
huffman_codes(uint * seq, uint n);
~huffman_codes();
+ /** Encodes symb into stream at bit-position pos, return the ending position (bits) */
ulong encode(uint symb, uint * stream, ulong pos);
+
+ /** decodes into symb from stream at bit-position pos, returns the new position */
ulong decode(uint * symb, uint * stream, ulong pos);
+
+ /** Returns the maximum length of a code */
uint max_length();
+
+ /** Returns the size of the table */
uint size();
+
+ /** Saves the coder to a file */
uint save(FILE *fp);
+
+ /** Loads a coder from a file */
static huffman_codes * load(FILE *fp);
protected: