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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.
*/
#include <stdio.h>
#include <stdlib.h>
#include "../../include/compression/warnmalloc.h"
#include "../../include/compression/tng_compress.h"
#include "../../include/compression/bwlzh.h"
#include "../../include/compression/huffman.h"
#include "../../include/compression/dict.h"
#include "../../include/compression/rle.h"
#include "../../include/compression/vals16.h"
int Ptngc_comp_huff_buflen(const int nvals)
{
return 132000+nvals*8;
}
/* 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)
{
unsigned int *dict=warnmalloc(0x20005*sizeof *dict);
unsigned int *hist=warnmalloc(0x20005*sizeof *hist);
unsigned int *vals16=NULL;
unsigned char *huffdict=warnmalloc(0x20005*sizeof *huffdict);
unsigned int *huffdictunpack=warnmalloc(0x20005*sizeof *huffdictunpack);
unsigned char *huffman1=warnmalloc(2*0x20005*sizeof *huffman1);
unsigned char *huffdict1=warnmalloc(0x20005*sizeof *huffdict1);
unsigned int *huffdictunpack1=warnmalloc(0x20005*sizeof *huffdictunpack1);
unsigned int *huffdictrle=warnmalloc((3*0x20005+3)*sizeof *huffdictrle);
unsigned char *huffman2=warnmalloc(6*0x20005*sizeof *huffman2);
unsigned char *huffdict2=warnmalloc(0x20005*sizeof *huffdict2);
unsigned int *huffdictunpack2=warnmalloc(0x20005*sizeof *huffdictunpack2);
int i;
int ndict,ndict1,ndict2;
int nhuff,nhuffdict,nhuffdictunpack;
int nhuff1,nhuffdict1,nhuffdictunpack1;
int nhuffrle,nhuff2,nhuffdict2,nhuffdictunpack2;
int nvals16;
/* Do I need to convert to vals16? */
if (!isvals16)
{
vals16=warnmalloc(nvals*3*sizeof *vals16);
Ptngc_comp_conv_to_vals16(vals,nvals,vals16,&nvals16);
nvals=nvals16;
vals=vals16;
}
else
nvals16=nvals;
/* Determine probabilities. */
Ptngc_comp_make_dict_hist(vals,nvals,dict,&ndict,hist);
/* First compress the data using huffman coding (place it ready for output at 14 (code for algorithm+length etc.). */
Ptngc_comp_conv_to_huffman(vals,nvals,dict,ndict,hist,
huffman+14,&nhuff,
huffdict,&nhuffdict,
huffdictunpack,&nhuffdictunpack);
*huffdatalen=nhuff;
/* Algorithm 0 stores the huffman dictionary directly (+ a code for
the algorithm) + lengths of the huffman buffer (4) and the huffman dictionary (3). */
huffman_lengths[0]=nhuff+nhuffdict+1*2+3*4+3+3;
/* Next we try to compress the huffman dictionary using huffman
coding ... (algorithm 1) */
/* Determine probabilities. */
Ptngc_comp_make_dict_hist(huffdictunpack,nhuffdictunpack,dict,&ndict1,hist);
/* Pack huffman dictionary */
Ptngc_comp_conv_to_huffman(huffdictunpack,nhuffdictunpack,
dict,ndict1,hist,
huffman1,&nhuff1,
huffdict1,&nhuffdict1,
huffdictunpack1,&nhuffdictunpack1);
huffman_lengths[1]=nhuff+nhuff1+nhuffdict1+1*2+3*4+3+3+3+3+3;
/* ... and rle + huffman coding ... (algorithm 2) Pack any repetetitive patterns. */
Ptngc_comp_conv_to_rle(huffdictunpack,nhuffdictunpack,
huffdictrle,&nhuffrle,1);
/* Determine probabilities. */
Ptngc_comp_make_dict_hist(huffdictrle,nhuffrle,dict,&ndict2,hist);
/* Pack huffman dictionary */
Ptngc_comp_conv_to_huffman(huffdictrle,nhuffrle,
dict,ndict2,hist,
huffman2,&nhuff2,
huffdict2,&nhuffdict2,
huffdictunpack2,&nhuffdictunpack2);
huffman_lengths[2]=nhuff+nhuff2+nhuffdict2+1*2+3*4+3+3+3+3+3+3;
/* Choose the best algorithm and output the data. */
if ((*chosen_algo==0) || ((*chosen_algo==-1) &&
(((huffman_lengths[0]<huffman_lengths[1]) &&
(huffman_lengths[0]<huffman_lengths[2])))))
{
*chosen_algo=0;
*huffman_len=huffman_lengths[0];
huffman[0]=isvals16;
huffman[1]=0;
huffman[2]=((unsigned int)nvals16)&0xFFU;
huffman[3]=(((unsigned int)nvals16)>>8)&0xFFU;
huffman[4]=(((unsigned int)nvals16)>>16)&0xFFU;
huffman[5]=(((unsigned int)nvals16)>>24)&0xFFU;
huffman[6]=((unsigned int)nvals)&0xFFU;
huffman[7]=(((unsigned int)nvals)>>8)&0xFFU;
huffman[8]=(((unsigned int)nvals)>>16)&0xFFU;
huffman[9]=(((unsigned int)nvals)>>24)&0xFFU;
huffman[10]=((unsigned int)nhuff)&0xFFU;
huffman[11]=(((unsigned int)nhuff)>>8)&0xFFU;
huffman[12]=(((unsigned int)nhuff)>>16)&0xFFU;
huffman[13]=(((unsigned int)nhuff)>>24)&0xFFU;
huffman[14+nhuff]=((unsigned int)nhuffdict)&0xFFU;
huffman[15+nhuff]=(((unsigned int)nhuffdict)>>8)&0xFFU;
huffman[16+nhuff]=(((unsigned int)nhuffdict)>>16)&0xFFU;
huffman[17+nhuff]=((unsigned int)ndict)&0xFFU;
huffman[18+nhuff]=(((unsigned int)ndict)>>8)&0xFFU;
huffman[19+nhuff]=(((unsigned int)ndict)>>16)&0xFFU;
for (i=0; i<nhuffdict; i++)
huffman[20+nhuff+i]=huffdict[i];
}
else if ((*chosen_algo==1) || ((*chosen_algo==-1) &&
((huffman_lengths[1]<huffman_lengths[2]))))
{
*chosen_algo=1;
*huffman_len=huffman_lengths[1];
huffman[0]=isvals16;
huffman[1]=1;
huffman[2]=((unsigned int)nvals16)&0xFFU;
huffman[3]=(((unsigned int)nvals16)>>8)&0xFFU;
huffman[4]=(((unsigned int)nvals16)>>16)&0xFFU;
huffman[5]=(((unsigned int)nvals16)>>24)&0xFFU;
huffman[6]=((unsigned int)nvals)&0xFFU;
huffman[7]=(((unsigned int)nvals)>>8)&0xFFU;
huffman[8]=(((unsigned int)nvals)>>16)&0xFFU;
huffman[9]=(((unsigned int)nvals)>>24)&0xFFU;
huffman[10]=((unsigned int)nhuff)&0xFFU;
huffman[11]=(((unsigned int)nhuff)>>8)&0xFFU;
huffman[12]=(((unsigned int)nhuff)>>16)&0xFFU;
huffman[13]=(((unsigned int)nhuff)>>24)&0xFFU;
huffman[14+nhuff]=((unsigned int)nhuffdictunpack)&0xFFU;
huffman[15+nhuff]=(((unsigned int)nhuffdictunpack)>>8)&0xFFU;
huffman[16+nhuff]=(((unsigned int)nhuffdictunpack)>>16)&0xFFU;
huffman[17+nhuff]=((unsigned int)ndict)&0xFFU;
huffman[18+nhuff]=(((unsigned int)ndict)>>8)&0xFFU;
huffman[19+nhuff]=(((unsigned int)ndict)>>16)&0xFFU;
huffman[20+nhuff]=((unsigned int)nhuff1)&0xFFU;
huffman[21+nhuff]=(((unsigned int)nhuff1)>>8)&0xFFU;
huffman[22+nhuff]=(((unsigned int)nhuff1)>>16)&0xFFU;
huffman[23+nhuff]=((unsigned int)nhuffdict1)&0xFFU;
huffman[24+nhuff]=(((unsigned int)nhuffdict1)>>8)&0xFFU;
huffman[25+nhuff]=(((unsigned int)nhuffdict1)>>16)&0xFFU;
huffman[26+nhuff]=((unsigned int)ndict1)&0xFFU;
huffman[27+nhuff]=(((unsigned int)ndict1)>>8)&0xFFU;
huffman[28+nhuff]=(((unsigned int)ndict1)>>16)&0xFFU;
for (i=0; i<nhuff1; i++)
huffman[29+nhuff+i]=huffman1[i];
for (i=0; i<nhuffdict1; i++)
huffman[29+nhuff+nhuff1+i]=huffdict1[i];
}
else
{
*chosen_algo=2;
*huffman_len=huffman_lengths[2];
huffman[0]=isvals16;
huffman[1]=2;
huffman[2]=((unsigned int)nvals16)&0xFFU;
huffman[3]=(((unsigned int)nvals16)>>8)&0xFFU;
huffman[4]=(((unsigned int)nvals16)>>16)&0xFFU;
huffman[5]=(((unsigned int)nvals16)>>24)&0xFFU;
huffman[6]=((unsigned int)nvals)&0xFFU;
huffman[7]=(((unsigned int)nvals)>>8)&0xFFU;
huffman[8]=(((unsigned int)nvals)>>16)&0xFFU;
huffman[9]=(((unsigned int)nvals)>>24)&0xFFU;
huffman[10]=((unsigned int)nhuff)&0xFFU;
huffman[11]=(((unsigned int)nhuff)>>8)&0xFFU;
huffman[12]=(((unsigned int)nhuff)>>16)&0xFFU;
huffman[13]=(((unsigned int)nhuff)>>24)&0xFFU;
huffman[14+nhuff]=((unsigned int)nhuffdictunpack)&0xFFU;
huffman[15+nhuff]=(((unsigned int)nhuffdictunpack)>>8)&0xFFU;
huffman[16+nhuff]=(((unsigned int)nhuffdictunpack)>>16)&0xFFU;
huffman[17+nhuff]=((unsigned int)ndict)&0xFFU;
huffman[18+nhuff]=(((unsigned int)ndict)>>8)&0xFFU;
huffman[19+nhuff]=(((unsigned int)ndict)>>16)&0xFFU;
huffman[20+nhuff]=((unsigned int)nhuffrle)&0xFFU;
huffman[21+nhuff]=(((unsigned int)nhuffrle)>>8)&0xFFU;
huffman[22+nhuff]=(((unsigned int)nhuffrle)>>16)&0xFFU;
huffman[23+nhuff]=((unsigned int)nhuff2)&0xFFU;
huffman[24+nhuff]=(((unsigned int)nhuff2)>>8)&0xFFU;
huffman[25+nhuff]=(((unsigned int)nhuff2)>>16)&0xFFU;
huffman[26+nhuff]=((unsigned int)nhuffdict2)&0xFFU;
huffman[27+nhuff]=(((unsigned int)nhuffdict2)>>8)&0xFFU;
huffman[28+nhuff]=(((unsigned int)nhuffdict2)>>16)&0xFFU;
huffman[29+nhuff]=((unsigned int)ndict2)&0xFFU;
huffman[30+nhuff]=(((unsigned int)ndict2)>>8)&0xFFU;
huffman[31+nhuff]=(((unsigned int)ndict2)>>16)&0xFFU;
for (i=0; i<nhuff2; i++)
huffman[32+nhuff+i]=huffman2[i];
for (i=0; i<nhuffdict2; i++)
huffman[32+nhuff+nhuff2+i]=huffdict2[i];
}
if (!isvals16)
free(vals16);
free(huffdictunpack2);
free(huffdict2);
free(huffman2);
free(huffdictrle);
free(huffdictunpack1);
free(huffdict1);
free(huffman1);
free(huffdictunpack);
free(huffdict);
free(hist);
free(dict);
}
void Ptngc_comp_huff_compress(unsigned int *vals, const int nvals,
unsigned char *huffman, int *huffman_len)
{
int huffman_lengths[N_HUFFMAN_ALGO];
int algo=-1;
int huffdatalen;
Ptngc_comp_huff_compress_verbose(vals,nvals,huffman,huffman_len,&huffdatalen,
huffman_lengths,&algo,0);
}
void Ptngc_comp_huff_decompress(unsigned char *huffman, const int huffman_len,
unsigned int *vals)
{
int isvals16=(int)huffman[0];
unsigned int *vals16=NULL;
int algo=(int)huffman[1];
int nvals16=(int)((unsigned int)huffman[2]|
(((unsigned int)huffman[3])<<8)|
(((unsigned int)huffman[4])<<16)|
(((unsigned int)huffman[5])<<24));
int nvals=(int)((unsigned int)huffman[6]|
(((unsigned int)huffman[7])<<8)|
(((unsigned int)huffman[8])<<16)|
(((unsigned int)huffman[9])<<24));
int nhuff=(int)((unsigned int)huffman[10]|
(((unsigned int)huffman[11])<<8)|
(((unsigned int)huffman[12])<<16)|
(((unsigned int)huffman[13])<<24));
int ndict=(int)((unsigned int)huffman[17+nhuff]|
(((unsigned int)huffman[18+nhuff])<<8)|
(((unsigned int)huffman[19+nhuff])<<16));
(void)huffman_len;
if (!isvals16)
vals16=warnmalloc(nvals16*sizeof *vals16);
else
{
vals16=vals;
nvals16=nvals;
}
if (algo==0)
{
int nhuffdict=(int)((unsigned int)huffman[14+nhuff]|
(((unsigned int)huffman[15+nhuff])<<8)|
(((unsigned int)huffman[16+nhuff])<<16));
Ptngc_comp_conv_from_huffman(huffman+14,vals16,nvals16,ndict,
huffman+20+nhuff,nhuffdict,NULL,0);
}
else if (algo==1)
{
unsigned int *huffdictunpack=warnmalloc(0x20005*sizeof *huffdictunpack);
/* First the dictionary needs to be uncompressed. */
int nhuffdictunpack=(int)((unsigned int)huffman[14+nhuff]|
(((unsigned int)huffman[15+nhuff])<<8)|
(((unsigned int)huffman[16+nhuff])<<16));
int nhuff1=(int)((unsigned int)huffman[20+nhuff]|
(((unsigned int)huffman[21+nhuff])<<8)|
(((unsigned int)huffman[22+nhuff])<<16));
int nhuffdict1=(int)((unsigned int)huffman[23+nhuff]|
(((unsigned int)huffman[24+nhuff])<<8)|
(((unsigned int)huffman[25+nhuff])<<16));
int ndict1=(int)((unsigned int)huffman[26+nhuff]|
(((unsigned int)huffman[27+nhuff])<<8)|
(((unsigned int)huffman[28+nhuff])<<16));
Ptngc_comp_conv_from_huffman(huffman+29+nhuff,huffdictunpack,
nhuffdictunpack,ndict1,
huffman+29+nhuff+nhuff1,nhuffdict1,NULL,0);
/* Then decompress the "real" data. */
Ptngc_comp_conv_from_huffman(huffman+14,vals16,nvals16,ndict,
NULL,0,huffdictunpack,nhuffdictunpack);
free(huffdictunpack);
}
else if (algo==2)
{
unsigned int *huffdictunpack=warnmalloc(0x20005*sizeof *huffdictunpack);
unsigned int *huffdictrle=warnmalloc((3*0x20005+3)*sizeof *huffdictrle);
/* First the dictionary needs to be uncompressed. */
int nhuffdictunpack=(int)((unsigned int)huffman[14+nhuff]|
(((unsigned int)huffman[15+nhuff])<<8)|
(((unsigned int)huffman[16+nhuff])<<16));
int nhuffrle=(int)((unsigned int)huffman[20+nhuff]|
(((unsigned int)huffman[21+nhuff])<<8)|
(((unsigned int)huffman[22+nhuff])<<16));
int nhuff2=(int)((unsigned int)huffman[23+nhuff]|
(((unsigned int)huffman[24+nhuff])<<8)|
(((unsigned int)huffman[25+nhuff])<<16));
int nhuffdict2=(int)((unsigned int)huffman[26+nhuff]|
(((unsigned int)huffman[27+nhuff])<<8)|
(((unsigned int)huffman[28+nhuff])<<16));
int ndict2=(int)((unsigned int)huffman[29+nhuff]|
(((unsigned int)huffman[30+nhuff])<<8)|
(((unsigned int)huffman[31+nhuff])<<16));
Ptngc_comp_conv_from_huffman(huffman+32+nhuff,huffdictrle,
nhuffrle,ndict2,
huffman+32+nhuff+nhuff2,nhuffdict2,NULL,0);
/* Then uncompress the rle data */
Ptngc_comp_conv_from_rle(huffdictrle,huffdictunpack,nhuffdictunpack);
/* Then decompress the "real" data. */
Ptngc_comp_conv_from_huffman(huffman+14,vals16,nvals16,ndict,
NULL,0,huffdictunpack,nhuffdictunpack);
free(huffdictrle);
free(huffdictunpack);
}
/* Do I need to convert from vals16? */
if (!isvals16)
{
int nvalsx;
Ptngc_comp_conv_from_vals16(vals16,nvals16,vals,&nvalsx);
free(vals16);
}
}
static char *huff_algo_names[N_HUFFMAN_ALGO]=
{
"Huffman (dict=raw)",
"Huffman (dict=Huffman)",
"Huffman (dict=RLE+Huffman)"
};
char *Ptngc_comp_get_huff_algo_name(const int algo)
{
if (algo<0)
return NULL;
else if (algo>=N_HUFFMAN_ALGO)
return NULL;
return huff_algo_names[algo];
}
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