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/* This code is part of the tng compression routines.
*
* Written by Daniel Spangberg
* Copyright (c) 2010, 2013, The GROMACS development team.
*
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the Revised BSD License.
*/
#ifndef BWLZH_H
#define BWLZH_H
/* Compress the integers (positive, small integers are preferable)
using bwlzh compression. The unsigned char *output should be
allocated to be able to hold worst case. You can obtain this length
conveniently by calling comp_get_buflen()
*/
void DECLSPECDLLEXPORT bwlzh_compress(unsigned int *vals, const int nvals,
unsigned char *output, int *output_len);
void DECLSPECDLLEXPORT bwlzh_compress_no_lz77(unsigned int *vals, const int nvals,
unsigned char *output, int *output_len);
int DECLSPECDLLEXPORT bwlzh_get_buflen(const int nvals);
void DECLSPECDLLEXPORT bwlzh_decompress(unsigned char *input, const int nvals,
unsigned int *vals);
/* The routines below are mostly useful for testing, and for internal
use by the library. */
void DECLSPECDLLEXPORT bwlzh_compress_verbose(unsigned int *vals, const int nvals,
unsigned char *output, int *output_len);
void DECLSPECDLLEXPORT bwlzh_compress_no_lz77_verbose(unsigned int *vals, const int nvals,
unsigned char *output, int *output_len);
void DECLSPECDLLEXPORT bwlzh_decompress_verbose(unsigned char *input, const int nvals,
unsigned int *vals);
/* Compress the integers (positive, small integers are preferable)
using huffman coding, with automatic selection of how to handle the
huffman dictionary. The unsigned char *huffman should be allocated
to be able to hold worst case. You can obtain this length
conveniently by calling comp_huff_buflen()
*/
void Ptngc_comp_huff_compress(unsigned int *vals, const int nvals,
unsigned char *huffman, int *huffman_len);
int Ptngc_comp_huff_buflen(const int nvals);
void Ptngc_comp_huff_decompress(unsigned char *huffman, const int huffman_len,
unsigned int *vals);
/* the value pointed to by chosen_algo should be
sent as -1 for autodetect. */
void Ptngc_comp_huff_compress_verbose(unsigned int *vals, int nvals,
unsigned char *huffman, int *huffman_len,
int *huffdatalen,
int *huffman_lengths,int *chosen_algo,
const int isvals16);
#define N_HUFFMAN_ALGO 3
char *Ptngc_comp_get_huff_algo_name(const int algo);
char *Ptngc_comp_get_algo_name(const int algo);
#endif
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