Moved PackBits.* from directory ../lips4

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@2588 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Michael Pfeiffer 2003-01-27 22:05:49 +00:00
parent 92c43cf25c
commit 68eea8f694
4 changed files with 171 additions and 1 deletions

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@ -6,7 +6,7 @@
#ifndef __DBGMSG_H
#define __DBGMSG_H
//#define DBG
// #define DBG
#ifdef DBG
void write_debug_stream(const char *, ...);

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@ -7,6 +7,7 @@ StaticLibrary print :
Halftone.cpp
JobData.cpp
JobSetupDlg.cpp
PackBits.cpp
PageSetupDlg.cpp
Preview.cpp
PrinterData.cpp

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@ -0,0 +1,158 @@
/*
* PackBits.cpp
* Copyright 1999-2000 Y.Takagi. All Rights Reserved.
*/
//#define DBG_CON_STREAM
#ifdef DBG_CON_STREAM
#include <fstream>
#endif
#include <string.h>
#include "PackBits.h"
#if (!__MWERKS__ || defined(MSIPL_USING_NAMESPACE))
using namespace std;
#else
#define std
#endif
#define MAXINBYTES 127
#define CONTROL1(i) -i
#define CONTROL2(i) i
enum STATUS {
INITIAL,
UNDECIDED,
UNMATCHED,
MATCHED
};
int pack_bits(unsigned char *pOut, unsigned char *pIn, int n)
{
int i;
unsigned char *control;
unsigned char *runbuf;
unsigned char thisbyte;
unsigned char runbyte;
STATUS status;
i = 0;
status = INITIAL;
control = runbuf = pOut;
runbyte = *pIn++;
while (--n) {
thisbyte = *pIn++;
switch (status) {
case INITIAL:
control = runbuf++;
*runbuf++ = runbyte;
if (thisbyte == runbyte) {
status = UNDECIDED;
} else {
runbyte = thisbyte;
status = UNMATCHED;
}
i = 1;
break;
case UNDECIDED:
if (i == MAXINBYTES) {
*control = CONTROL2(i);
*runbuf++ = runbyte;
runbyte = thisbyte;
status = INITIAL;
} else if (thisbyte == runbyte) {
if (i > 1) {
*control = CONTROL2(i - 2);
control = runbuf - 1;
}
i = 2;
status = MATCHED;
} else {
*runbuf++ = runbyte;
runbyte = thisbyte;
status = UNMATCHED;
i++;
}
break;
case UNMATCHED:
if (i == MAXINBYTES) {
*control = CONTROL2(i);
status = INITIAL;
} else {
if (thisbyte == runbyte) {
status = UNDECIDED;
}
i++;
}
*runbuf++ = runbyte;
runbyte = thisbyte;
break;
case MATCHED:
if ((thisbyte != runbyte) || (i == MAXINBYTES)) {
runbuf = control;
*runbuf++ = CONTROL1(i);
*runbuf++ = runbyte;
runbyte = thisbyte;
status = INITIAL;
} else {
i++;
}
break;
}
}
switch (status) {
case INITIAL:
*runbuf++ = CONTROL2(1);
break;
case UNDECIDED:
case UNMATCHED:
*control = CONTROL2(i);
break;
case MATCHED:
runbuf = control;
*runbuf++ = CONTROL1(i);
break;
}
*runbuf++ = runbyte;
return runbuf - pOut;
}
#ifdef DBG_CON_STREAM
int main(int argc, char **argv)
{
if (argc < 2) {
return -1;
}
ifstream ifs(*++argv, ios::binary | ios::nocreate);
if (!ifs) {
return -1;
}
ifs.seekg(0, ios::end);
long size = ifs.tellg();
ifs.seekg(0, ios::beg);
unsigned char *pIn = new unsigned char[size];
unsigned char *pOut = new unsigned char[size * 3];
ifs.read(pIn, size);
int cnt = PackBits(pOut, pIn, size);
ofstream ofs("test.bin", ios::binary);
ofs.write(pOut, cnt);
delete [] pIn;
delete [] pOut;
}
#endif

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@ -0,0 +1,11 @@
/*
* PackBits.h
* Copyright 1999-2000 Y.Takagi. All Rights Reserved.
*/
#ifndef __PACKBITS_H
#define __PACKBITS_H
int pack_bits(unsigned char *out, unsigned char *in, int bytes);
#endif /* __PACKBITS_H */