ReceiveTempSMS
/
Sweden-Number
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

cabinet: Improve initialization of some arrays.

This commit is contained in:
Andrew Talbot 2007-01-25 22:14:49 +00:00 committed by Alexandre Julliard
parent eefea58d7d
commit 267fcdd009
1 changed files with 18 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
dlls/cabinet/fdi.c
View File

@ -865,8 +865,21 @@ static int QTMfdi_init(int window, int level, fdi_decomp_state *decomp_state) {
* LZXfdi_init (internal)
*/
static int LZXfdi_init(int window, fdi_decomp_state *decomp_state) {
static const cab_UBYTE bits[] =
{ 0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6,
7, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, 14, 14,
15, 15, 16, 16, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17,
17, 17, 17};
static const cab_ULONG base[] =
{ 0, 1, 2, 3, 4, 6, 8, 12,
16, 24, 32, 48, 64, 96, 128, 192,
256, 384, 512, 768, 1024, 1536, 2048, 3072,
4096, 6144, 8192, 12288, 16384, 24576, 32768, 49152,
65536, 98304, 131072, 196608, 262144, 393216, 524288, 655360,
786432, 917504, 1048576, 1179648, 1310720, 1441792, 1572864, 1703936,
1835008, 1966080, 2097152};
cab_ULONG wndsize = 1 << window;
int i, j, posn_slots;
int posn_slots;
/* LZX supports window sizes of 2^15 (32Kb) through 2^21 (2Mb) */
/* if a previously allocated window is big enough, keep it */
@ -882,14 +895,8 @@ static int LZXfdi_init(int window, fdi_decomp_state *decomp_state) {
LZX(window_size) = wndsize;
/* initialize static tables */
for (i=0, j=0; i <= 50; i += 2) {
CAB(extra_bits)[i] = CAB(extra_bits)[i+1] = j; /* 0,0,0,0,1,1,2,2,3,3... */
if ((i != 0) && (j < 17)) j++; /* 0,0,1,2,3,4...15,16,17,17,17,17... */
}
for (i=0, j=0; i <= 50; i++) {
CAB(lzx_position_base)[i] = j; /* 0,1,2,3,4,6,8,12,16,24,32,... */
j += 1 << CAB(extra_bits)[i]; /* 1,1,1,1,2,2,4,4,8,8,16,16,32,32,... */
}
memcpy(CAB(extra_bits), bits, sizeof(bits));
memcpy(CAB(lzx_position_base), base, sizeof(base));
/* calculate required position slots */
if (window == 20) posn_slots = 42;
@ -909,8 +916,8 @@ static int LZXfdi_init(int window, fdi_decomp_state *decomp_state) {
LZX(window_posn) = 0;
/* initialize tables to 0 (because deltas will be applied to them) */
for (i = 0; i < LZX_MAINTREE_MAXSYMBOLS; i++) LZX(MAINTREE_len)[i] = 0;
for (i = 0; i < LZX_LENGTH_MAXSYMBOLS; i++) LZX(LENGTH_len)[i] = 0;
memset(LZX(MAINTREE_len), 0, sizeof(LZX(MAINTREE_len)));
memset(LZX(LENGTH_len), 0, sizeof(LZX(LENGTH_len)));
return DECR_OK;
}