daiduo/TurboPFor-Integer-Compression
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TurboPFor: TurboPFor decode

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2017-01-07 16:25:48 +01:00
parent 493af76903
commit 970db9a2f3
1 changed files with 73 additions and 4 deletions
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75
vp4d.c
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@ -101,12 +101,53 @@ static ALIGNED(char, shuffles[16][16], 16) = {
#define BITUNDD bitund1
#include "vp4d.c"
#define USIZE 16
#define _P4DEC _p4ddec //delta0
#define P4DEC p4ddec
#define P4NDEC p4nddec
#define P4NDECS p4ddec
#define BITUNPACKD bitdunpack
#define _BITUNPACKD _bitdunpack
#define BITUNDD bitund
#include "vp4d.c"
#define _P4DEC _p4d1dec //delta1
#define P4DEC p4d1dec
#define P4NDEC p4nd1dec
#define P4NDECS p4d1dec
#define BITUNPACKD bitd1unpack
#define _BITUNPACKD bitd1unpack
#define BITUNDD bitund1
#include "vp4d.c"
#define USIZE 64
#define _P4DEC _p4ddec //delta0
#define P4DEC p4ddec
#define P4NDEC p4nddec
#define P4NDECS p4ddec
#define BITUNPACKD bitdunpack
#define _BITUNPACKD _bitdunpack
#define BITUNDD bitund
#include "vp4d.c"
#define _P4DEC _p4d1dec //delta1
#define P4DEC p4d1dec
#define P4NDEC p4nd1dec
#define P4NDECS p4d1dec
#define BITUNPACKD bitd1unpack
#define _BITUNPACKD bitd1unpack
#define BITUNDD bitund1
#include "vp4d.c"
#undef _P4DEC
#undef P4DEC
#undef BITUNPACK
#undef BITUNDD
#undef P4DELTA
#define USIZE 32
// SIMD -------------
#ifndef NSIMD
#ifdef __SSSE3__
@ -185,9 +226,13 @@ static ALIGNED(char, shuffles[16][16], 16) = {
#else
#define uint_t TEMPLATE3(uint, USIZE, _t)
unsigned char *TEMPLATE2(_P4DEC, USIZE)(unsigned char *__restrict in, unsigned n, uint_t *__restrict out P4DELTA(uint_t start), unsigned b, unsigned bx ) {
#pragma GCC push_options
#pragma GCC optimize ("align-functions=16")
ALWAYS_INLINE unsigned char *TEMPLATE2(_P4DEC, USIZE)(unsigned char *__restrict in, unsigned n, uint_t *__restrict out P4DELTA(uint_t start), unsigned b, unsigned bx ) {
uint_t ex[P4D_MAX+8];
if(!(b & 1)) return TEMPLATE2(BITUNPACKD, USIZE)(in, n, out P4DELTA(start), b>>1);
if(!(b & 1))
return TEMPLATE2(BITUNPACKD, USIZE)(in, n, out P4DELTA(start), b>>1);
b >>= 1;
#ifdef VSIZE
@ -273,7 +318,31 @@ unsigned char *TEMPLATE2(P4DEC, USIZE)(unsigned char *__restrict in, unsigned n,
unsigned char *TEMPLATE2(P4NDEC, USIZE)(unsigned char *__restrict in, unsigned n, uint_t *__restrict out P4DELTA(uint_t start) ) {
uint_t *op;
for(op = out; op != out+(n&~(CSIZE-1)); op += CSIZE) { __builtin_prefetch(in+512);
in = TEMPLATE2(P4DEC, USIZE)(in, CSIZE, op P4DELTA(start));
unsigned b = *in++,bx,i;
if(likely(!(b & 0x80))) {
if(b & 1)
bx = *in++;
in = TEMPLATE2(_P4DEC, USIZE)(in, CSIZE, op P4DELTA(start), b, bx );
} else {
uint_t ex[P4D_MAX+8];
b = (b & 0x7f)>>1;
bx = *in++;
in = TEMPLATE2(BITUNPACK, USIZE)(in, CSIZE, op, b);
in = TEMPLATE2(vbdec, USIZE)(in, bx, ex);
for(i = 0; i != (bx & ~3); i += 4) {
op[in[i ]] |= ex[i ] << b;
op[in[i+1]] |= ex[i+1] << b;
op[in[i+2]] |= ex[i+2] << b;
op[in[i+3]] |= ex[i+3] << b;
}
for(;i < bx; i++)
op[in[i]] |= ex[i] << b;
in += bx;
#ifdef BITUNDD
TEMPLATE2(BITUNDD, USIZE)(op, CSIZE, start);
#endif
} // in = TEMPLATE2(P4DEC, USIZE)(in, CSIZE, op P4DELTA(start));
P4DELTA_(start = op[CSIZE-1]);
}
return TEMPLATE2(P4NDECS, USIZE)(in, n&(CSIZE-1), op P4DELTA(start));