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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 <stdbool.h>
#include "ppm.h"
#include "pm_c_util.h"
#include "mallocvar.h"
static char usage[] = "[paintjetfile]";
static unsigned int
uintProduct(unsigned int const multiplicand,
unsigned int const multiplier) {
if (UINT_MAX / multiplier < multiplicand)
pm_error("Airthmetic overflow");
return multiplicand * multiplier;
}
static int
egetc(FILE * const ifP) {
int c;
c = fgetc(ifP);
if (c == -1)
pm_error("unexpected end of file");
return c;
}
int
main(int argc, const char ** argv) {
int cmd, val;
char buffer[BUFSIZ];
int planes = 3;
unsigned int rows;
unsigned int rowsX;
unsigned int cols;
bool colsIsSet;
unsigned char **image = NULL;
int *imlen;
FILE * ifP;
int mode;
bool modeIsSet;
int argn;
unsigned char bf[3];
pixel * pixrow;
int c;
int row;
int plane;
pm_proginit(&argc, argv);
argn = 1;
if (argn != argc)
ifP = pm_openr(argv[argn++]);
else
ifP = stdin;
if (argn != argc)
pm_usage(usage);
row = 0; /* initial value */
plane = 0; /* initial value */
modeIsSet = false; /* initial value */
colsIsSet = false; /* initial value */
rowsX = 0; /* initial value */
while ((c = fgetc(ifP)) != -1) {
if (c != '\033')
continue;
switch (c = egetc(ifP)) {
case 'E': /* reset */
break;
case '*': {
unsigned int i;
cmd = egetc(ifP);
for (i = 0; i < BUFSIZ; i++) {
if (!isdigit(c = egetc(ifP)) && 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 */
if (val < 0)
pm_error("invalid width value");
else {
cols = val;
colsIsSet = true;
}
break;
case 'T': /* height */
if (val < 0)
pm_error ("invalid height value");
else
rowsX = 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 transmission mode %d", val);
mode = val;
modeIsSet = true;
break;
case 'V': /* send plane */
case 'W': /* send last plane */
if (row >= rowsX || image == NULL) {
if (row >= rowsX)
rowsX += 100;
if (image == NULL) {
MALLOCARRAY(image, uintProduct(rowsX, planes));
MALLOCARRAY(imlen, uintProduct(rowsX, planes));
} else {
REALLOCARRAY(image, uintProduct(rowsX, planes));
REALLOCARRAY(imlen, uintProduct(rowsX, planes));
}
}
if (image == NULL || imlen == NULL)
pm_error("out of memory");
if (plane >= planes)
pm_error("too many planes");
if (!colsIsSet)
pm_error("missing width value");
cols = MAX(cols, val);
imlen[row * planes + plane] = val;
MALLOCARRAY(image[row * planes + plane], val);
if (image[row * planes + plane] == NULL)
pm_error("out of memory");
if (fread(image[row * planes + plane], 1, val, ifP) != val)
pm_error("short data");
if (c == 'V')
++plane;
else {
plane = 0;
++row;
}
break;
default:
pm_message("uninmplemented <ESC>*%c%d%c", cmd, val, c);
break;
}
break;
case 'p': /* Position */
if (plane != 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 = row + val;
if (buffer[0] == '-')
val = row - val;
for (; val > row; ++row)
for (plane = 0; plane < 3; ++plane) {
imlen[row * planes + plane] = 0;
image[row * planes + plane] = NULL;
}
row = 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;
}
} /* case */
} /* switch */
}
pm_close(ifP);
if (!modeIsSet)
pm_error("Input does not contain a 'bM' transmission mode order");
rows = row;
if (mode == 1) {
unsigned int const newcols = 10240;
/* It could not be larger than that! */
unsigned char * buf;
unsigned int row;
for (row = 0, cols = 0; row < rows; ++row) {
unsigned int plane;
if (image[row * planes] == NULL)
continue;
for (plane = 0; plane < planes; ++plane) {
unsigned int i;
unsigned int col;
MALLOCARRAY(buf, newcols);
if (buf == NULL)
pm_error("out of memory");
for (i = 0, col = 0;
col < imlen[plane + row * planes];
col += 2)
for (cmd = image[plane + row * planes][col],
val = image[plane + row * planes][col+1];
cmd >= 0 && i < newcols; cmd--, i++)
buf[i] = val;
cols = MAX(cols, i);
free(image[plane + row * 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[plane + row * planes] = realloc(buf, i);
}
}
cols *= 8;
}
ppm_writeppminit(stdout, cols, rows, (pixval) 255, 0);
pixrow = ppm_allocrow(cols);
for (row = 0; row < rows; ++row) {
if (image[row * planes] == NULL) {
unsigned int col;
for (col = 0; col < cols; ++col)
PPM_ASSIGN(pixrow[col], 0, 0, 0);
continue;
}
{
unsigned int col;
unsigned int cmd;
for (cmd = 0, col = 0; col < cols; col += 8, ++cmd) {
unsigned int i;
for (i = 0; i < 8 && col + i < cols; ++i) {
unsigned int plane;
for (plane = 0; plane < planes; ++plane)
if (mode == 0 && cmd >= imlen[row * planes + plane])
bf[plane] = 0;
else
bf[plane] = (image[row * planes + plane][cmd] &
(1 << (7 - i))) ? 255 : 0;
PPM_ASSIGN(pixrow[col + i], bf[0], bf[1], bf[2]);
}
}
}
ppm_writeppmrow(stdout, pixrow, cols, 255, 0);
}
pm_close(stdout);
return 0;
}
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