isa-l/igzip/flatten_ll.c
Roy Oursler 01dfbcc484 igzip: implement igzip two pass
Change-Id: I9564b2da251a02197b39cab5f141e7aff1ae8439
Signed-off-by: Roy Oursler <roy.j.oursler@intel.com>
2017-03-30 16:50:48 -07:00

42 lines
798 B
C

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include "flatten_ll.h"
void flatten_ll(uint16_t * ll_hist)
{
uint32_t i, j;
uint16_t *s = ll_hist, x, *p;
s[265] += s[266];
s[266] = s[267] + s[268];
s[267] = s[269] + s[270];
s[268] = s[271] + s[272];
s[269] = s[273] + s[274] + s[275] + s[276];
s[270] = s[277] + s[278] + s[279] + s[280];
s[271] = s[281] + s[282] + s[283] + s[284];
s[272] = s[285] + s[286] + s[287] + s[288];
p = s + 289;
for (i = 273; i < 277; i++) {
x = *(p++);
for (j = 1; j < 8; j++)
x += *(p++);
s[i] = x;
}
for (; i < 281; i++) {
x = *(p++);
for (j = 1; j < 16; j++)
x += *(p++);
s[i] = x;
}
for (; i < 285; i++) {
x = *(p++);
for (j = 1; j < 32; j++)
x += *(p++);
s[i] = x;
}
s[284] -= s[512];
s[285] = s[512];
}