home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
rtsi.com
/
2014.01.www.rtsi.com.tar
/
www.rtsi.com
/
OS9
/
OSK
/
NETWORK
/
netpbm_src.lzh
/
NETPBM
/
PBM
/
pbmto10x.c
< prev
next >
Wrap
C/C++ Source or Header
|
1996-11-18
|
4KB
|
157 lines
/* pbmto10x.c - read a portable bitmap and produce a Gemini 10X printer file
**
** Copyright (C) 1990, 1994 by Ken Yap
**
** Permission to use, copy, modify, and distribute this software and its
** documentation for any purpose and without fee is hereby granted, provided
** that the above copyright notice appear in all copies and that both that
** copyright notice and this permission notice appear in supporting
** documentation. This software is provided "as is" without express or
** implied warranty.
**
** Modified to shorten stripes and eliminate blank stripes. Dec 1994.
*/
#include "pbm.h"
#define LOW_RES_ROWS 8 /* printed per pass */
#define HIGH_RES_ROWS 16 /* printed per pass */
static void res_60x72 ARGS(( void ));
static void res_120x144 ARGS(( void ));
static int highres = 0;
static FILE *ifp;
static int rows, cols, format;
int
main(argc, argv)
int argc;
char *argv[];
{
pbm_init( &argc, argv );
if (argc > 1 && argv[1][0] == '-' && argv[1][1] == 'h')
{
highres = 1;
--argc;
++argv;
}
if (argc > 2)
pm_usage("[pbmfile]");
if (argc == 2)
ifp = pm_openr(argv[1]);
else
ifp = stdin;
pbm_readpbminit(ifp, &cols, &rows, &format);
if (highres)
res_120x144();
else
res_60x72();
pm_close(ifp);
exit(0);
}
static void
outstripe(stripe, sP, reschar)
register char *stripe, *sP;
register int reschar;
{
register int ncols;
/* scan backwards, removing empty columns */
while (sP != stripe)
if (*--sP != 0)
{
++sP;
break;
}
ncols = sP - stripe;
if (ncols > 0)
{
printf("\033%c%c%c", reschar, ncols % 256, ncols / 256);
fwrite(stripe, sizeof(char), ncols, stdout);
}
putchar('\n'); /* flush buffer */
}
static void
res_60x72()
{
register int i, item, npins, row, col;
bit *bitrows[LOW_RES_ROWS], *bP[LOW_RES_ROWS];
char *stripe, *sP;
stripe = malloc(cols);
for (i = 0; i < LOW_RES_ROWS; ++i)
bitrows[i] = pbm_allocrow(cols);
printf("\033A\010"); /* '\n' = 8/72 */
for (row = 0, sP = stripe; row < rows; row += LOW_RES_ROWS, sP = stripe)
{
if (row + LOW_RES_ROWS <= rows)
npins = LOW_RES_ROWS;
else
npins = rows - row;
for (i = 0; i < npins; ++i)
pbm_readpbmrow(ifp, bP[i] = bitrows[i], cols, format);
for (col = 0; col < cols; ++col)
{
item = 0;
for (i = 0; i < npins; ++i)
if (*(bP[i]++) == PBM_BLACK)
item |= 1 << (7 - i);
*sP++ = item;
}
outstripe(stripe, sP, 'K');
}
printf("\033@");
free(stripe);
}
static void
res_120x144()
{
register int i, pin, item, npins, row, col;
bit *bitrows[HIGH_RES_ROWS], *bP[HIGH_RES_ROWS];
char *stripe, *sP;
stripe = malloc(cols);
for (i = 0; i < HIGH_RES_ROWS; ++i)
bitrows[i] = pbm_allocrow(cols);
printf("\0333\001"); /* \n = 1/144" */
for (row = 0, sP = stripe; row < rows; row += HIGH_RES_ROWS, sP = stripe)
{
if (row + HIGH_RES_ROWS <= rows)
npins = HIGH_RES_ROWS;
else
npins = rows - row;
for (i = 0; i < npins; ++i)
pbm_readpbmrow(ifp, bP[i] = bitrows[i], cols, format);
for (col = 0; col < cols; ++col)
{
item = 0;
/* even rows */
for (pin = i = 0; i < npins; i += 2, ++pin)
if (*(bP[i]++) == PBM_BLACK)
item |= 1 << (7 - pin);
*sP++ = item;
}
outstripe(stripe, sP, 'L');
sP = stripe;
for (col = 0; col < cols; ++col)
{
item = 0;
/* odd rows */
for (i = 1, pin = 0; i < npins; i += 2, ++pin)
if (*(bP[i]++) == PBM_BLACK)
item |= 1 << (7 - pin);
*sP++ = item;
}
outstripe(stripe, sP, 'L');
printf("\033J\016"); /* 14/144 down, \n did 1/144 */
}
printf("\033@");
free(stripe);
}