| 1 |
#ifndef lint |
| 2 |
static const char RCSid[] = "$Id: paintjet.c,v 2.4 2003/02/22 02:07:27 greg Exp $"; |
| 3 |
#endif |
| 4 |
/* |
| 5 |
* paintjet.c - program to dump pixel file to HP PaintJet color printer. |
| 6 |
* |
| 7 |
* 10/6/89 |
| 8 |
*/ |
| 9 |
|
| 10 |
#include <stdio.h> |
| 11 |
#include <time.h> |
| 12 |
|
| 13 |
#include "platform.h" |
| 14 |
#include "color.h" |
| 15 |
#include "resolu.h" |
| 16 |
|
| 17 |
#define NCOLS 1440 /* 8" at 180 dpi */ |
| 18 |
|
| 19 |
|
| 20 |
main(argc, argv) |
| 21 |
int argc; |
| 22 |
char *argv[]; |
| 23 |
{ |
| 24 |
int i, status = 0; |
| 25 |
SET_DEFAULT_BINARY(); |
| 26 |
SET_FILE_BINARY(stdin); |
| 27 |
SET_FILE_BINARY(stdout); |
| 28 |
if (argc < 2) |
| 29 |
status = printp(NULL) == -1; |
| 30 |
else |
| 31 |
for (i = 1; i < argc; i++) |
| 32 |
status += printp(argv[i]) == -1; |
| 33 |
exit(status); |
| 34 |
} |
| 35 |
|
| 36 |
|
| 37 |
printp(fname) /* print a picture */ |
| 38 |
char *fname; |
| 39 |
{ |
| 40 |
FILE *input; |
| 41 |
int xres, yres; |
| 42 |
COLR scanline[NCOLS]; |
| 43 |
int i; |
| 44 |
|
| 45 |
if (fname == NULL) { |
| 46 |
input = stdin; |
| 47 |
fname = "<stdin>"; |
| 48 |
} else if ((input = fopen(fname, "r")) == NULL) { |
| 49 |
fprintf(stderr, "%s: cannot open\n", fname); |
| 50 |
return(-1); |
| 51 |
} |
| 52 |
/* discard header */ |
| 53 |
if (checkheader(input, COLRFMT, NULL) < 0) { |
| 54 |
fprintf(stderr, "%s: not a Radiance picture\n", fname); |
| 55 |
return(-1); |
| 56 |
} |
| 57 |
/* get picture dimensions */ |
| 58 |
if (fgetresolu(&xres, &yres, input) < 0) { |
| 59 |
fprintf(stderr, "%s: bad picture size\n", fname); |
| 60 |
return(-1); |
| 61 |
} |
| 62 |
if (xres > NCOLS) { |
| 63 |
fprintf(stderr, "%s: resolution mismatch\n", fname); |
| 64 |
return(-1); |
| 65 |
} |
| 66 |
/* |
| 67 |
* Set 180 dpi, 3 planes, left margin and width. |
| 68 |
*/ |
| 69 |
printf("\033*t180R\033*r3U\033&a%dH\033*r%dS\033*r1A", |
| 70 |
((NCOLS-xres)>>4)<<5, xres); |
| 71 |
|
| 72 |
for (i = yres-1; i >= 0; i--) { |
| 73 |
if (freadcolrs(scanline, xres, input) < 0) |
| 74 |
return(-1); |
| 75 |
normcolrs(scanline, xres, 0); |
| 76 |
plotscan(scanline, xres, i); |
| 77 |
} |
| 78 |
|
| 79 |
printf("\033*r0B\f"); |
| 80 |
|
| 81 |
fclose(input); |
| 82 |
|
| 83 |
return(0); |
| 84 |
} |
| 85 |
|
| 86 |
|
| 87 |
plotscan(scan, len, y) /* plot a scanline */ |
| 88 |
COLR scan[]; |
| 89 |
int len; |
| 90 |
int y; |
| 91 |
{ |
| 92 |
int c; |
| 93 |
register int x, b; |
| 94 |
|
| 95 |
for (c = 0; c < 3; c++) { |
| 96 |
printf("\033*b%d%c", (len+7)>>3, c<2 ? 'V' : 'W'); |
| 97 |
b = 0; |
| 98 |
for (x = 0; x < len; x++) { |
| 99 |
b = b<<1 | colbit(scan[x], x, c); |
| 100 |
if ((x&7) == 7) { |
| 101 |
putc(b, stdout); |
| 102 |
b = 0; |
| 103 |
} |
| 104 |
} |
| 105 |
if (x & 7) |
| 106 |
putc(b, stdout); |
| 107 |
} |
| 108 |
} |
| 109 |
|
| 110 |
|
| 111 |
colbit(col, x, a) /* determine bit value for primary at x */ |
| 112 |
COLR col; |
| 113 |
register int x; |
| 114 |
register int a; |
| 115 |
{ |
| 116 |
static int cerr[NCOLS][3]; |
| 117 |
static int err[3]; |
| 118 |
int b, errp; |
| 119 |
register int ison; |
| 120 |
|
| 121 |
b = col[a]; |
| 122 |
errp = err[a]; |
| 123 |
err[a] += b + cerr[x][a]; |
| 124 |
ison = err[a] > 128; |
| 125 |
if (ison) err[a] -= 256; |
| 126 |
err[a] /= 3; |
| 127 |
cerr[x][a] = err[a] + errp; |
| 128 |
return(ison); |
| 129 |
} |
