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cache1d.c: rename three variables, put commented out code at the end.

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git-svn-id: https://svn.eduke32.com/eduke32@2367 1a8010ca-5511-0410-912e-c29ae57300e0
This commit is contained in:
helixhorned 2012-02-20 19:52:22 +00:00
parent c88854b770
commit e45e969d89
1 changed files with 91 additions and 90 deletions
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181
polymer/eduke32/build/src/cache1d.c
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@ -1170,7 +1170,7 @@ failure:
#define LZWSIZE 16384 //Watch out for shorts!
#define LZWSIZEPAD (LZWSIZE+(LZWSIZE>>4))
static char lzwbuf1[LZWSIZEPAD], lzwbuf4[LZWSIZE], lzwbuf5[LZWSIZEPAD];
static char lzwtmpbuf[LZWSIZEPAD], lzwrawbuf[LZWSIZE], lzwcompbuf[LZWSIZEPAD];
static int16_t lzwbuf2[LZWSIZEPAD], lzwbuf3[LZWSIZEPAD];
static int32_t lzwcompress(const char *lzwinbuf, int32_t uncompleng, char *lzwoutbuf);
@ -1186,10 +1186,10 @@ int32_t kdfread(void *buffer, bsize_t dasizeof, bsize_t count, int32_t fil)
ptr = (char *)buffer;
if (kread(fil,&leng,2) != 2) return -1; leng = B_LITTLE16(leng);
if (kread(fil,lzwbuf5,(int32_t)leng) != leng) return -1;
k = 0; kgoal = lzwuncompress(lzwbuf5,(int32_t)leng,lzwbuf4);
if (kread(fil,lzwcompbuf,(int32_t)leng) != leng) return -1;
k = 0; kgoal = lzwuncompress(lzwcompbuf,(int32_t)leng,lzwrawbuf);
copybufbyte(lzwbuf4,ptr,(int32_t)dasizeof);
copybufbyte(lzwrawbuf,ptr,(int32_t)dasizeof);
k += (int32_t)dasizeof;
for (i=1; i<count; i++)
@ -1197,10 +1197,10 @@ int32_t kdfread(void *buffer, bsize_t dasizeof, bsize_t count, int32_t fil)
if (k >= kgoal)
{
if (kread(fil,&leng,2) != 2) return -1; leng = B_LITTLE16(leng);
if (kread(fil,lzwbuf5,(int32_t)leng) != leng) return -1;
k = 0; kgoal = lzwuncompress(lzwbuf5,(int32_t)leng,lzwbuf4);
if (kread(fil,lzwcompbuf,(int32_t)leng) != leng) return -1;
k = 0; kgoal = lzwuncompress(lzwcompbuf,(int32_t)leng,lzwrawbuf);
}
for (j=0; j<dasizeof; j++) ptr[j+dasizeof] = ((ptr[j]+lzwbuf4[j+k])&255);
for (j=0; j<dasizeof; j++) ptr[j+dasizeof] = ((ptr[j]+lzwrawbuf[j+k])&255);
k += dasizeof;
ptr += dasizeof;
}
@ -1208,76 +1208,6 @@ int32_t kdfread(void *buffer, bsize_t dasizeof, bsize_t count, int32_t fil)
return count;
}
#if 0
int32_t dfread(void *buffer, bsize_t dasizeof, bsize_t count, BFILE *fil)
{
uint32_t i, j, k, kgoal;
int16_t leng;
char *ptr;
if (dasizeof > LZWSIZE) { count *= dasizeof; dasizeof = 1; }
ptr = (char *)buffer;
if (Bfread(&leng,2,1,fil) != 1) return -1; leng = B_LITTLE16(leng);
if (Bfread(lzwbuf5,(int32_t)leng,1,fil) != 1) return -1;
k = 0; kgoal = lzwuncompress(lzwbuf5,(int32_t)leng,lzwbuf4);
copybufbyte(lzwbuf4,ptr,(int32_t)dasizeof);
k += (int32_t)dasizeof;
for (i=1; i<count; i++)
{
if (k >= kgoal)
{
if (Bfread(&leng,2,1,fil) != 1) return -1; leng = B_LITTLE16(leng);
if (Bfread(lzwbuf5,(int32_t)leng,1,fil) != 1) return -1;
k = 0; kgoal = lzwuncompress(lzwbuf5,(int32_t)leng,lzwbuf4);
}
for (j=0; j<dasizeof; j++) ptr[j+dasizeof] = ((ptr[j]+lzwbuf4[j+k])&255);
k += dasizeof;
ptr += dasizeof;
}
return count;
}
void kdfwrite(const void *buffer, bsize_t dasizeof, bsize_t count, int32_t fil)
{
uint32_t i, j, k;
int16_t leng, swleng;
const char *ptr;
if (dasizeof > LZWSIZE) { count *= dasizeof; dasizeof = 1; }
ptr = buffer;
copybufbyte(ptr,lzwbuf4,(int32_t)dasizeof);
k = dasizeof;
if (k > LZWSIZE-dasizeof)
{
leng = (int16_t)lzwcompress(lzwbuf4,k,lzwbuf5); k = 0; swleng = B_LITTLE16(leng);
Bwrite(fil,&swleng,2); Bwrite(fil,lzwbuf5,(int32_t)leng);
}
for (i=1; i<count; i++)
{
for (j=0; j<dasizeof; j++) lzwbuf4[j+k] = ((ptr[j+dasizeof]-ptr[j])&255);
k += dasizeof;
if (k > LZWSIZE-dasizeof)
{
leng = (int16_t)lzwcompress(lzwbuf4,k,lzwbuf5); k = 0; swleng = B_LITTLE16(leng);
Bwrite(fil,&swleng,2); Bwrite(fil,lzwbuf5,(int32_t)leng);
}
ptr += dasizeof;
}
if (k > 0)
{
leng = (int16_t)lzwcompress(lzwbuf4,k,lzwbuf5); swleng = B_LITTLE16(leng);
Bwrite(fil,&swleng,2); Bwrite(fil,lzwbuf5,(int32_t)leng);
}
}
#endif
void dfwrite(const void *buffer, bsize_t dasizeof, bsize_t count, BFILE *fil)
{
uint32_t i, j, k;
@ -1287,30 +1217,30 @@ void dfwrite(const void *buffer, bsize_t dasizeof, bsize_t count, BFILE *fil)
if (dasizeof > LZWSIZE) { count *= dasizeof; dasizeof = 1; }
ptr = buffer;
copybufbyte(ptr,lzwbuf4,(int32_t)dasizeof);
copybufbyte(ptr,lzwrawbuf,(int32_t)dasizeof);
k = dasizeof;
if (k > LZWSIZE-dasizeof)
{
leng = (int16_t)lzwcompress(lzwbuf4,k,lzwbuf5); k = 0; swleng = B_LITTLE16(leng);
Bfwrite(&swleng,2,1,fil); Bfwrite(lzwbuf5,(int32_t)leng,1,fil);
leng = (int16_t)lzwcompress(lzwrawbuf,k,lzwcompbuf); k = 0; swleng = B_LITTLE16(leng);
Bfwrite(&swleng,2,1,fil); Bfwrite(lzwcompbuf,(int32_t)leng,1,fil);
}
for (i=1; i<count; i++)
{
for (j=0; j<dasizeof; j++) lzwbuf4[j+k] = ((ptr[j+dasizeof]-ptr[j])&255);
for (j=0; j<dasizeof; j++) lzwrawbuf[j+k] = ((ptr[j+dasizeof]-ptr[j])&255);
k += dasizeof;
if (k > LZWSIZE-dasizeof)
{
leng = (int16_t)lzwcompress(lzwbuf4,k,lzwbuf5); k = 0; swleng = B_LITTLE16(leng);
Bfwrite(&swleng,2,1,fil); Bfwrite(lzwbuf5,(int32_t)leng,1,fil);
leng = (int16_t)lzwcompress(lzwrawbuf,k,lzwcompbuf); k = 0; swleng = B_LITTLE16(leng);
Bfwrite(&swleng,2,1,fil); Bfwrite(lzwcompbuf,(int32_t)leng,1,fil);
}
ptr += dasizeof;
}
if (k > 0)
{
leng = (int16_t)lzwcompress(lzwbuf4,k,lzwbuf5); swleng = B_LITTLE16(leng);
Bfwrite(&swleng,2,1,fil); Bfwrite(lzwbuf5,(int32_t)leng,1,fil);
leng = (int16_t)lzwcompress(lzwrawbuf,k,lzwcompbuf); swleng = B_LITTLE16(leng);
Bfwrite(&swleng,2,1,fil); Bfwrite(lzwcompbuf,(int32_t)leng,1,fil);
}
}
@ -1320,7 +1250,7 @@ static int32_t lzwcompress(const char *lzwinbuf, int32_t uncompleng, char *lzwou
int32_t bytecnt1, bitcnt, numbits, oneupnumbits;
int16_t *shortptr;
for (i=255; i>=0; i--) { lzwbuf1[i] = i; lzwbuf3[i] = (i+1)&255; }
for (i=255; i>=0; i--) { lzwtmpbuf[i] = i; lzwbuf3[i] = (i+1)&255; }
clearbuf(lzwbuf2,256>>1,0xffffffff);
clearbuf(lzwoutbuf,((uncompleng+15)+3)>>2,0L);
@ -1335,7 +1265,7 @@ static int32_t lzwcompress(const char *lzwinbuf, int32_t uncompleng, char *lzwou
if (bytecnt1 == uncompleng) break;
if (lzwbuf2[addr] < 0) {lzwbuf2[addr] = addrcnt; break;}
newaddr = lzwbuf2[addr];
while (lzwbuf1[newaddr] != lzwinbuf[bytecnt1])
while (lzwtmpbuf[newaddr] != lzwinbuf[bytecnt1])
{
zx = lzwbuf3[newaddr];
if (zx < 0) {lzwbuf3[newaddr] = addrcnt; break;}
@ -1345,7 +1275,7 @@ static int32_t lzwcompress(const char *lzwinbuf, int32_t uncompleng, char *lzwou
addr = newaddr;
}
while (addr >= 0);
lzwbuf1[addrcnt] = lzwinbuf[bytecnt1];
lzwtmpbuf[addrcnt] = lzwinbuf[bytecnt1];
lzwbuf2[addrcnt] = -1;
lzwbuf3[addrcnt] = -1;
@ -1406,10 +1336,10 @@ static int32_t lzwuncompress(const char *lzwinbuf, int32_t compleng, char *lzwou
lzwbuf3[currstr] = dat;
for (leng=0; dat>=256; leng++,dat=lzwbuf3[dat])
lzwbuf1[leng] = lzwbuf2[dat];
lzwtmpbuf[leng] = lzwbuf2[dat];
lzwoutbuf[outbytecnt++] = dat;
for (i=leng-1; i>=0; i--) lzwoutbuf[outbytecnt++] = lzwbuf1[i];
for (i=leng-1; i>=0; i--) lzwoutbuf[outbytecnt++] = lzwtmpbuf[i];
lzwbuf2[currstr-1] = dat; lzwbuf2[currstr] = dat;
currstr++;
@ -1419,6 +1349,77 @@ static int32_t lzwuncompress(const char *lzwinbuf, int32_t compleng, char *lzwou
return((int32_t)B_LITTLE16(shortptr[0])); //uncompleng
}
#if 0
int32_t dfread(void *buffer, bsize_t dasizeof, bsize_t count, BFILE *fil)
{
uint32_t i, j, k, kgoal;
int16_t leng;
char *ptr;
if (dasizeof > LZWSIZE) { count *= dasizeof; dasizeof = 1; }
ptr = (char *)buffer;
if (Bfread(&leng,2,1,fil) != 1) return -1; leng = B_LITTLE16(leng);
if (Bfread(lzwcompbuf,(int32_t)leng,1,fil) != 1) return -1;
k = 0; kgoal = lzwuncompress(lzwcompbuf,(int32_t)leng,lzwrawbuf);
copybufbyte(lzwrawbuf,ptr,(int32_t)dasizeof);
k += (int32_t)dasizeof;
for (i=1; i<count; i++)
{
if (k >= kgoal)
{
if (Bfread(&leng,2,1,fil) != 1) return -1; leng = B_LITTLE16(leng);
if (Bfread(lzwcompbuf,(int32_t)leng,1,fil) != 1) return -1;
k = 0; kgoal = lzwuncompress(lzwcompbuf,(int32_t)leng,lzwrawbuf);
}
for (j=0; j<dasizeof; j++) ptr[j+dasizeof] = ((ptr[j]+lzwrawbuf[j+k])&255);
k += dasizeof;
ptr += dasizeof;
}
return count;
}
void kdfwrite(const void *buffer, bsize_t dasizeof, bsize_t count, int32_t fil)
{
uint32_t i, j, k;
int16_t leng, swleng;
const char *ptr;
if (dasizeof > LZWSIZE) { count *= dasizeof; dasizeof = 1; }
ptr = buffer;
copybufbyte(ptr,lzwrawbuf,(int32_t)dasizeof);
k = dasizeof;
if (k > LZWSIZE-dasizeof)
{
leng = (int16_t)lzwcompress(lzwrawbuf,k,lzwcompbuf); k = 0; swleng = B_LITTLE16(leng);
Bwrite(fil,&swleng,2); Bwrite(fil,lzwcompbuf,(int32_t)leng);
}
for (i=1; i<count; i++)
{
for (j=0; j<dasizeof; j++) lzwrawbuf[j+k] = ((ptr[j+dasizeof]-ptr[j])&255);
k += dasizeof;
if (k > LZWSIZE-dasizeof)
{
leng = (int16_t)lzwcompress(lzwrawbuf,k,lzwcompbuf); k = 0; swleng = B_LITTLE16(leng);
Bwrite(fil,&swleng,2); Bwrite(fil,lzwcompbuf,(int32_t)leng);
}
ptr += dasizeof;
}
if (k > 0)
{
leng = (int16_t)lzwcompress(lzwrawbuf,k,lzwcompbuf); swleng = B_LITTLE16(leng);
Bwrite(fil,&swleng,2); Bwrite(fil,lzwcompbuf,(int32_t)leng);
}
}
#endif
/*
* vim:ts=4:sw=4:
*/