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/* pjtoppm.c - convert an HP PainJetXL image to a portable pixmap file
**
** Copyright (C) 1990 by Christos Zoulas (christos@ee.cornell.edu)
**
** 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.
*/
#include "ppm.h"
#include "mallocvar.h"
static char usage[] = "[paintjetfile]";
static int egetc ARGS((FILE *fp));
static int
egetc(fp)
FILE *fp;
{
int c;
if ((c = fgetc(fp)) == -1)
pm_error("unexpected end of file");
return(c);
}
int
main(argc, argv)
int argc;
char *argv[];
{
int cmd, val;
char buffer[BUFSIZ];
int planes = 3, rows = -1, cols = -1;
int r = 0, c = 0, p = 0, i;
unsigned char **image = NULL;
int *imlen;
FILE *fp = stdin;
int mode;
int argn;
unsigned char bf[3];
pixel *pixrow;
ppm_init(&argc, argv);
argn = 1;
if (argn != argc)
fp = pm_openr(argv[argn++]);
else
fp = stdin;
if (argn != argc)
pm_usage(usage);
while ((c = fgetc(fp)) != -1) {
if (c != '\033')
continue;
switch (c = egetc(fp)) {
case 'E': /* reset */
break;
case '*':
cmd = egetc(fp);
for (i = 0; i < BUFSIZ; i++) {
if (!isdigit(c = egetc(fp)) && c != '+' && c != '-')
break;
buffer[i] = c;
}
if (i != 0) {
buffer[i] = '\0';
if (sscanf(buffer, "%d", &val) != 1)
pm_error("bad value `%s' at <ESC>*%c%c", buffer, cmd, c);
}
else
val = -1;
switch (cmd) {
case 't':
switch (c) {
case 'J': /* render */
break;
case 'K': /* back scale */
break;
case 'I': /* gamma */
break;
case 'R':
break; /* set resolution */
default:
pm_message("uninmplemented <ESC>*%c%d%c", cmd, val, c);
break;
}
break;
case 'r':
switch (c) {
case 'S': /* width */
cols = val;
break;
case 'T': /* height */
rows = val;
break;
case 'U': /* planes */
planes = val;
if (planes != 3)
pm_error("can handle only 3 plane files");
break;
case 'A': /* begin raster */
break;
case 'B':
case 'C': /* end raster */
break;
case 'V':
break; /* set deci height */
case 'H':
break; /* set deci width */
default:
pm_message("uninmplemented <ESC>*%c%d%c", cmd, val, c);
break;
}
break;
case 'b':
switch (c) {
case 'M': /* transmission mode */
if (val != 0 && val != 1)
pm_error("unimplemented trasmission mode %d", val);
mode = val;
break;
case 'V': /* send plane */
case 'W': /* send last plane */
if (rows == -1 || r >= rows || image == NULL) {
if (rows == -1 || r >= rows)
rows += 100;
if (image == NULL) {
MALLOCARRAY(image, rows * planes);
MALLOCARRAY(imlen, rows * planes);
}
else {
image = (unsigned char **)
realloc(image,
rows * planes *
sizeof(unsigned char *));
imlen = (int *)
realloc(imlen, rows * planes * sizeof(int));
}
}
if (image == NULL || imlen == NULL)
pm_error("out of memory");
if (p == planes)
pm_error("too many planes");
cols = cols > val ? cols : val;
imlen[r * planes + p] = val;
MALLOCARRAY(image[r * planes + p], val);
if (image[r * planes + p] == NULL)
pm_error("out of memory");
if (fread(image[r * planes + p], 1, val, fp) != val)
pm_error("short data");
if (c == 'V')
p++;
else {
p = 0;
r++;
}
break;
default:
pm_message("uninmplemented <ESC>*%c%d%c", cmd, val, c);
break;
}
break;
case 'p': /* Position */
if (p != 0)
pm_error("changed position in the middle of "
"transferring planes");
switch (c) {
case 'X':
pm_message("can only position in y");
break;
case 'Y':
if (buffer[0] == '+')
val = r + val;
if (buffer[0] == '-')
val = r - val;
for (; val > r; r++)
for (p = 0; p < 3; p++) {
imlen[r * planes + p] = 0;
image[r * planes + p] = NULL;
}
r = val;
break;
default:
pm_message("uninmplemented <ESC>*%c%d%c", cmd, val, c);
break;
}
default:
pm_message("uninmplemented <ESC>*%c%d%c", cmd, val, c);
break;
}
}
}
pm_close(fp);
rows = r;
if (mode == 1) {
unsigned char *buf;
int newcols = 0;
newcols = 10240; /* It could not be larger that that! */
cols = 0;
for (r = 0; r < rows; r++) {
if (image[r * planes] == NULL)
continue;
for (p = 0; p < planes; p++) {
MALLOCARRAY(buf, newcols);
if (buf == NULL)
pm_error("out of memory");
for (i = 0, c = 0; c < imlen[p + r * planes]; c += 2)
for (cmd = image[p + r * planes][c],
val = image[p + r * planes][c+1];
cmd >= 0 && i < newcols; cmd--, i++)
buf[i] = val;
cols = cols > i ? cols : i;
free(image[p + r * planes]);
/*
* This is less than what we have so it realloc should
* not return null. Even if it does, tough! We will
* lose a line, and probably die on the next line anyway
*/
image[p + r * planes] = (unsigned char *) realloc(buf, i);
}
}
cols *= 8;
}
ppm_writeppminit(stdout, cols, rows, (pixval) 255, 0);
pixrow = ppm_allocrow(cols);
for (r = 0; r < rows; r++) {
if (image[r * planes] == NULL) {
for (c = 0; c < cols; c++)
PPM_ASSIGN(pixrow[c], 0, 0, 0);
continue;
}
for (cmd = 0, c = 0; c < cols; c += 8, cmd++)
for (i = 0; i < 8 && c + i < cols; i++) {
for (p = 0; p < planes; p++)
if (mode == 0 && cmd >= imlen[r * planes + p])
bf[p] = 0;
else
bf[p] = (image[r * planes + p][cmd] &
(1 << (7 - i))) ? 255 : 0;
PPM_ASSIGN(pixrow[c + i], bf[0], bf[1], bf[2]);
}
ppm_writeppmrow(stdout, pixrow, cols, (pixval) 255, 0);
}
pm_close(stdout);
exit(0);
}
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