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powturbo
2016-04-17 16:13:53 +02:00
parent aa23362d44
commit 237d680704
4 changed files with 370 additions and 2 deletions
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2
vint.c
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@ -21,7 +21,7 @@
- twitter : https://twitter.com/powturbo
- email : powturbo [_AT_] gmail [_DOT_] com
**/
// vint.c - "Integer Compression" variable byte
// vint.c - "Integer Compression" variable byte
#include <stdio.h>
#include "conf.h"

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vint.c~ Normal file
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/**
Copyright (C) powturbo 2013-2016
GPL v2 License
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; either version 2 of the License, or
(at your option) any later version.
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.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- homepage : https://sites.google.com/site/powturbo/
- github : https://github.com/powturbo
- twitter : https://twitter.com/powturbo
- email : powturbo [_AT_] gmail [_DOT_] com
**/
// vint.c - "Integer Compression" variable byte
#include <stdio.h>
#include "conf.h"
#include "vint.h"
#include "bitutil.h"
//-------------------------------------- variable byte : 32 bits ----------------------------------------------------------------
//0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 1111
unsigned char vtab[] = { 1, 1, 1, 1, 1, 1, 1, 1, 5, 4, 3, 3, 2, 2, 2, 2 };
// decompress buffer into an array of n unsigned values. Return value = end of decompressed buffer in
unsigned char *vbdec32(unsigned char *__restrict in, unsigned n, unsigned *__restrict out) { register unsigned x, *op;
for(op = out; op != out+(n&~(8-1)); op += 8) {
_vbget32(in, x, op[0] = x);
_vbget32(in, x, op[1] = x);
_vbget32(in, x, op[2] = x);
_vbget32(in, x, op[3] = x); __builtin_prefetch(in+256, 0);
_vbget32(in, x, op[4] = x);
_vbget32(in, x, op[5] = x);
_vbget32(in, x, op[6] = x);
_vbget32(in, x, op[7] = x);
}
while(op != out+n) _vbget32(in, x, *op++ = x );
return in;
}
// encode array with n unsigned (32 bits in[n]) values to the buffer out. Return value = end of compressed buffer out
unsigned char *vbenc32(unsigned *__restrict in, unsigned n, unsigned char *__restrict out) { register unsigned x, *ip;
for(ip = in; ip != in+(n&~(8-1)); ip += 8) { __builtin_prefetch(ip+128, 0);
x = ip[0]; _vbput32(out, x, ;);
x = ip[1]; _vbput32(out, x, ;);
x = ip[2]; _vbput32(out, x, ;);
x = ip[3]; _vbput32(out, x, ;);
x = ip[4]; _vbput32(out, x, ;);
x = ip[5]; _vbput32(out, x, ;);
x = ip[6]; _vbput32(out, x, ;);
x = ip[7]; _vbput32(out, x, ;);
}
while(ip != in+n) { x = *ip++; _vbput32(out, x, ;); }
return out;
}
unsigned char *vbdec64(unsigned char *__restrict in, unsigned n, uint64_t *__restrict out) { uint64_t x,*op;
for(op = out; op != out+(n&~(4-1)); op += 4) {
_vbget64(in, x, op[0] = x);
_vbget64(in, x, op[1] = x);
_vbget64(in, x, op[2] = x);
_vbget64(in, x, op[3] = x);
}
while(op != out+n) { _vbget64(in, x, ; ); *op++ = x; }
return in;
}
// encode array with n unsigned (32 bits in[n]) values to the buffer out. Return value = end of compressed buffer out
unsigned char *vbenc64(uint64_t *__restrict in, unsigned n, unsigned char *__restrict out) { uint64_t *ip;
for(ip = in; ip != in+(n&~(4-1)); ) {
vbput64(out, *ip++);
vbput64(out, *ip++);
vbput64(out, *ip++);
vbput64(out, *ip++);
}
while(ip != in+n) vbput64(out, *ip++);
return out;
}
//---------------------------------- increasing integer lists ----------------------------------------------------------------------------------------------------
unsigned char *vbdenc32(unsigned *__restrict in, unsigned n, unsigned char *__restrict out, unsigned start) {
unsigned *ip,v;
for(ip = in; ip != in+(n&~(4-1)); ) {
v = (*ip)-start; start=*ip++; _vbput32(out, v, ;);
v = (*ip)-start; start=*ip++; _vbput32(out, v, ;);
v = (*ip)-start; start=*ip++; _vbput32(out, v, ;);
v = (*ip)-start; start=*ip++; _vbput32(out, v, ;);
}
while(ip < in+n) { v = (*ip)-start; start = *ip++; _vbput32(out, v, ;); }
return out;
}
unsigned char *vbddec32(unsigned char *__restrict in, unsigned n, unsigned *__restrict out, unsigned start) {
unsigned x,*op;
for(op = out; op != out+(n&~(8-1)); ) {
_vbget32(in, x, ;); *op++ = (start += x);
_vbget32(in, x, ;); *op++ = (start += x);
_vbget32(in, x, ;); *op++ = (start += x);
_vbget32(in, x, ;); *op++ = (start += x);
_vbget32(in, x, ;); *op++ = (start += x);
_vbget32(in, x, ;); *op++ = (start += x);
_vbget32(in, x, ;); *op++ = (start += x);
_vbget32(in, x, ;); *op++ = (start += x);
}
while(op != out+n) _vbget32(in, x, *op++ = (start += x));
return in;
}
//----------------------------------strictly increasing (never remaining constant or decreasing) integer lists---------------------------------------------------------
#define VINT_Z
unsigned char *vbd1enc32(unsigned *__restrict in, unsigned n, unsigned char *__restrict out, unsigned start) {
unsigned *ip, v, b = 0;
unsigned char *op = out;
#ifdef VINT_Z
v = in[0] - start - 1;
unsigned long long u = (unsigned long long)v<<1;
if(n == 1) u |= 1;
_vbput32(op, u, ;);
if(!--n) return op;
start = *in++;
#endif
for(ip = in; ip != in + (n&~(4-1)); ) {
v = (*ip)-start-1; start = *ip++; _vbput32(op, v, ;); b |= v;
v = (*ip)-start-1; start = *ip++; _vbput32(op, v, ;); b |= v;
v = (*ip)-start-1; start = *ip++; _vbput32(op, v, ;); b |= v;
v = (*ip)-start-1; start = *ip++; _vbput32(op, v, ;); b |= v;
}
while(ip != in+n) { v = (*ip)-start-1; start = *ip++; _vbput32(op, v, ;); b |= v; }
#ifdef VINT_Z
if(!b) {
u = (unsigned long long)in[-1] << 1 | 1;
_vbput32(out, u, ;);
return out;
}
#endif
return op;
}
unsigned char *vbd1dec32(unsigned char *__restrict in, unsigned n, unsigned *__restrict out, unsigned start) {
unsigned x,*op;
#ifdef VINT_Z
unsigned long long u; _vbget32(in, u, ;); x = u>>1; *out = (start += x+1);
if(u & 1) {
#ifdef __SSE2__
out++; --n; BITDIZERO32(out, n, start, 1);
#else
for(x = 1; x < n; x++) out[x] = start+x;
#endif
return in;
}
out++; --n;
#endif
for(op = out; op != out+(n&~(8-1)); ) {
_vbget32(in, x, ++x); *op++ = (start += x);
_vbget32(in, x, ++x); *op++ = (start += x);
_vbget32(in, x, ++x); *op++ = (start += x);
_vbget32(in, x, ++x); *op++ = (start += x);
_vbget32(in, x, ++x); *op++ = (start += x);
_vbget32(in, x, ++x); *op++ = (start += x);
_vbget32(in, x, ++x); *op++ = (start += x);
_vbget32(in, x, ++x); *op++ = (start += x);
}
while(op != out+n) { _vbget32(in, x, ++x); *op++ = (start += x); }
return in;
}
//--------------------------------------- variable byte : 16/15 bits -------------------------------------------------------------------
unsigned char *vbenc15(unsigned short *__restrict in, unsigned n, unsigned char *__restrict out) { unsigned short *in_ = in +n; while(in < in_) vbput15(out, *in++); return out;}
unsigned char *vbdec15(unsigned char *__restrict in, unsigned n, unsigned short *__restrict out) { unsigned short *out_ = out+n,x; while(out < out_) _vbget15(in, x, *out++ = x); return in; }
unsigned char *vbenc16(unsigned short *__restrict in, unsigned n, unsigned char *__restrict out) { unsigned short *in_ = in +n; while(in < in_) vbput16(out, *in++); return out;}
unsigned char *vbdec16(unsigned char *__restrict in, unsigned n, unsigned short *__restrict out) { unsigned short *out_ = out+n,x; while(out < out_) _vbget16(in, x, *out++ = x); return in; }
//---------------------------------- Zigzag encoding ------------------------------------------------------------------------------------
unsigned char *vbzenc32(unsigned *__restrict in, unsigned n, unsigned char *__restrict out, unsigned start) {
unsigned *ip,v;
for(ip = in; ip != in+(n&~(4-1)); ) {
v = zigzagenc32((*ip)-start); start=*ip++; _vbput32(out, v, ;);
v = zigzagenc32((*ip)-start); start=*ip++; _vbput32(out, v, ;);
v = zigzagenc32((*ip)-start); start=*ip++; _vbput32(out, v, ;);
v = zigzagenc32((*ip)-start); start=*ip++; _vbput32(out, v, ;);
}
while(ip < in+n) { v = zigzagenc32((*ip)-start); start = *ip++; _vbput32(out, v, ;); }
return out;
}
unsigned char *vbzdec32(unsigned char *__restrict in, unsigned n, unsigned *__restrict out, unsigned start) {
unsigned x,*op;
for(op = out; op != out+(n&~(8-1)); ) {
_vbget32(in, x, ;); *op++ = (start += zigzagdec32(x));
_vbget32(in, x, ;); *op++ = (start += zigzagdec32(x));
_vbget32(in, x, ;); *op++ = (start += zigzagdec32(x));
_vbget32(in, x, ;); *op++ = (start += zigzagdec32(x));
_vbget32(in, x, ;); *op++ = (start += zigzagdec32(x));
_vbget32(in, x, ;); *op++ = (start += zigzagdec32(x));
_vbget32(in, x, ;); *op++ = (start += zigzagdec32(x));
_vbget32(in, x, ;); *op++ = (start += zigzagdec32(x));
}
while(op != out+n) _vbget32(in, x, *op++ = (start += zigzagdec32(x)));
return in;
}
unsigned char *vbzenc64(uint64_t *__restrict in, unsigned n, unsigned char *__restrict out, uint64_t start) {
uint64_t *ip,v;
for(ip = in; ip != in+(n&~(4-1)); ) {
v = zigzagenc64((*ip)-start); start=*ip++; _vbput64(out, v, ;);
v = zigzagenc64((*ip)-start); start=*ip++; _vbput64(out, v, ;);
v = zigzagenc64((*ip)-start); start=*ip++; _vbput64(out, v, ;);
v = zigzagenc64((*ip)-start); start=*ip++; _vbput64(out, v, ;);
}
while(ip < in+n) { v = zigzagenc64((*ip)-start); start = *ip++; _vbput64(out, v, ;); }
return out;
}
unsigned char *vbzdec64(unsigned char *__restrict in, unsigned n, uint64_t *__restrict out, uint64_t start) {
uint64_t x,*op;
for(op = out; op != out+(n&~(4-1)); ) {
_vbget64(in, x, ;); *op++ = (start += zigzagdec64(x));
_vbget64(in, x, ;); *op++ = (start += zigzagdec64(x));
_vbget64(in, x, ;); *op++ = (start += zigzagdec64(x));
_vbget64(in, x, ;); *op++ = (start += zigzagdec64(x));
}
while(op != out+n) _vbget64(in, x, *op++ = (start += zigzagdec64(x)));
return in;
}

1
vint.h
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@ -22,7 +22,6 @@
- email : powturbo [_AT_] gmail [_DOT_] com
**/
// vint.h - "Integer Compression" variable byte include header
#ifndef VINT_H
#define VINT_H
#include <stdint.h>

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vint.h~ Normal file
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/**
Copyright (C) powturbo 2013-2016
GPL v2 License
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; either version 2 of the License, or
(at your option) any later version.
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.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
- homepage : https://sites.google.com/site/powturbo/
- github : https://github.com/powturbo
- twitter : https://twitter.com/powturbo
- email : powturbo [_AT_] gmail [_DOT_] com
**/
// vint.h - "Integer Compression" variable byte include header
#ifndef VINT_H
#define VINT_H
#include <stdint.h>
#ifdef __cplusplus
extern "C" {
#endif
//--------------------------- 32 bits ---------------------------------------------------------------------------------------
extern unsigned char vtab[];
#define vbvlen32(__x) vtab[((unsigned char)(__x))>>4]
#define _vbput32(__op, __x, __act) {\
if(likely(__x < (1<< 7))) { *__op++ = __x; __act;}\
else if(likely(__x < (1<<14))) { ctou16(__op) = __x << 8 | __x >> 8 | 0x80; __op += 2; __act;}\
else if(likely(__x < (1<<21))) { *__op++ = __x >> 16 | 0xc0; ctou32(__op) = __x; __op += 2; __act;}\
else if(likely(__x < (1<<28))) { ctou32(__op) = rol32(__x,8) | 0xe0; __op += 4; __act;}\
else { *__op++ = (unsigned long long)__x >> 32 | 0xf0; ctou32(__op) = __x; __op += 4; __act;}\
}
#define _vbget32(__ip, __x, __act) do { __x = *__ip++;\
if(!(__x & 0x80)) { __act;}\
else if(!(__x & 0x40)) { __x = (__x & 0x3f)<< 8 | *__ip++; __act;}\
else if(!(__x & 0x20)) { __x = (__x & 0x1f)<<16 | ctou16(__ip); __ip += 2; __act;}\
else if(!(__x & 0x10)) { __x = ror32(ctou32(__ip-1),8) & 0xfffffff; __ip += 3; __act;}\
else { __x = (unsigned long long)(__x & 0x07)<<32 | ctou32(__ip); __ip += 4; __act;}\
} while(0)
//----------------- 16 bits -------------------------------------------------------------------------------------------------------
#define _vbput16(__op, __x) _vbput32(__op, __x)
#define _vbget16(__ip, __x, __act) _vbget32(__ip, __x, __act)
//----------------- 64 bits -------------------------------------------------------------------------------------------------------
#define _vbput64(__op, __x, __act) {\
if(__x < 1 << 7) { *__op++ = __x << 1; __act;}\
else if(__x < 1 <<14) { *(unsigned short *)__op = __x << 2 | 0x01; __op += 2; __act;}\
else if(__x < 1 <<21) { *(unsigned short *)__op = __x << 3 | 0x03; __op += 2; *__op++ = __x >> 13; __act;}\
else if(__x < 1 <<28) { *(unsigned *)__op = __x << 4 | 0x07; __op += 4; __act;}\
else if(__x < 1ull<<35) { *(unsigned *)__op = __x << 5 | 0x0f; __op += 4; *__op++ = __x >> 27; __act;}\
else if(__x < 1ull<<42) { *(unsigned *)__op = __x << 6 | 0x1f; __op += 4; *(unsigned short *)__op = __x >> 26; __op+=2; __act;}\
else if(__x < 1ull<<49) { *(unsigned *)__op = __x << 7 | 0x3f; __op += 4; *(unsigned short *)__op = __x >> 25; *(__op+2) = __x >> 41; __op+=3; __act;}\
else if(__x < 1ull<<56) { *(unsigned long long *)__op = __x << 8 | 0x7f; __op += 8; __act;}\
else { *__op++ = 0xff; *(unsigned long long *)__op = __x; __op+=8; __act;}\
}
#define _vbget64(__ip, __x, __act) do {\
if(!((__x = *__ip) & 1<<0)) { __ip++; __x >>= 1; __act;}\
else if(!(__x & 1<<1)) { __x = (*(unsigned short *)__ip) >> 2; __ip += 2; __act;}\
else if(!(__x & 1<<2)) { __x = (*(unsigned short *)__ip) >> 3 | *(__ip+2) << 13; __ip += 3; __act;}\
else if(!(__x & 1<<3)) { __x = (*(unsigned *)__ip) >> 4; __ip += 4; __act;}\
else if(!(__x & 1<<4)) { __x = (*(unsigned *)__ip) >> 5 | (unsigned long long)(*(unsigned char *)(__ip+4)) << 27; __ip += 5; __act;}\
else if(!(__x & 1<<5)) { __x = (*(unsigned *)__ip) >> 6 | (unsigned long long)(*(unsigned short *)(__ip+4)) << 26; __ip += 6; __act;}\
else if(!(__x & 1<<6)) { __x = (*(unsigned *)__ip) >> 7 | (unsigned long long)(*(unsigned short *)(__ip+4)) << 25 | (unsigned long long)(*(__ip+6)) << 41; __ip += 7; __act;}\
else if(!(__x & 1<<7)) { __x = (*(unsigned long long *)__ip) >> 8; __ip += 8; __act;}\
else { __x = *(unsigned long long *)(__ip+1); __ip += 9; __act;}\
} while(0)
//----------------------------- Variable byte functions -----------------------------------------------------------------------
// Length of uncompress value. Input __x is the compressed buffer start
#define vblen32(__x) ({ unsigned _x = __x; _x > 0x7f?(_x > 0x3fff?(_x > 0x1fffff?(_x > 0x0fffffff?5:4):3):2):1; })
//------- encode/decode single value ----------
#define vbput16(__op, __x) vbput32(__op, __x)
#define vbget16(__ip) vbget32(__ip)
#define vbput32(__op, __x) { register unsigned _x_ = __x; _vbput32(__op, _x_, ;); }
#define vbget32(__ip) ({ register unsigned _x_; _vbget32(__ip, _x_, ;); _x_; })
#define vbput64(__op, __x) { unsigned long long _x_ = __x; _vbput64(__op, _x_, ;); }
#define vbget64(__ip) ({ unsigned long long _x_; _vbget64(__ip, _x_, ;); _x_; })
// encode array with n unsigned (32 bits in[n]) values to the buffer out. Return value = end of compressed buffer out
unsigned char *vbenc16(unsigned short *__restrict in, unsigned n, unsigned char *__restrict out);
unsigned char *vbenc32(unsigned *__restrict in, unsigned n, unsigned char *__restrict out);
unsigned char *vbenc64(uint64_t *__restrict in, unsigned n, unsigned char *__restrict out);
//------ decompress buffer into an array of n unsigned values. Return value = end of decompressed buffer in
unsigned char *vbdec16(unsigned char *__restrict in, unsigned n, unsigned short *__restrict out);
unsigned char *vbdec32(unsigned char *__restrict in, unsigned n, unsigned *__restrict out);
unsigned char *vbdec64(unsigned char *__restrict in, unsigned n, uint64_t *__restrict out);
//------ increasing integer lists -------------------------------------------------------------
unsigned char *vbdenc32(unsigned *__restrict in, unsigned n, unsigned char *__restrict out, unsigned start);
unsigned char *vbddec32(unsigned char *__restrict in, unsigned n, unsigned *__restrict out, unsigned start);
//----- strictly increasing (never remaining constant or decreasing) integer lists------------
unsigned char *vbd1enc32(unsigned *__restrict in, unsigned n, unsigned char *__restrict out, unsigned start);
unsigned char *vbd1dec32(unsigned char *__restrict in, unsigned n, unsigned *__restrict out, unsigned start);
//------ zigzag encoding integer lists -------------------------------------------------------------
unsigned char *vbzenc32(unsigned *__restrict in, unsigned n, unsigned char *__restrict out, unsigned start);
unsigned char *vbzdec32(unsigned char *__restrict in, unsigned n, unsigned *__restrict out, unsigned start);
unsigned char *vbzenc64(uint64_t *__restrict in, unsigned n, unsigned char *__restrict out, uint64_t start);
unsigned char *vbzdec64(unsigned char *__restrict in, unsigned n, uint64_t *__restrict out, uint64_t start);
//--- 15 bits integer lists ------------
#define vbput15(__op, __x) do { unsigned _x = __x; if(likely(_x < 0x80)) *__op++ = _x; else { *__op++ = (_x) >> 8 | 0x80; *__op++ = _x; } } while(0)
#define _vbget15(__ip,__x, __act) do { if((__x = *__ip++) > 0x7f) __x = (__x & 0x7f) << 8 | *__ip++; __act; } while(0)
#define vblen15(__x) ((__x) > 0x7f?2:1)
#define vbget15(__ip) ({ unsigned _x; _vbget15(__ip, _x, ;); _x; })
unsigned char *vbenc15( unsigned short *__restrict in, unsigned n, unsigned char *__restrict out);
unsigned char *vbdec15( unsigned char *__restrict in, unsigned n, unsigned short *__restrict out);
#ifdef __cplusplus
}
#endif
#endif