1 |
/* Copyright 1988 Regents of the University of California */ |
2 |
|
3 |
#ifndef lint |
4 |
static char SCCSid[] = "$SunId$ LBL"; |
5 |
#endif |
6 |
|
7 |
/* |
8 |
* slide.c - driver for dicomed film recorder using GRAFPAC under VMS. |
9 |
* |
10 |
* 2/19/86 |
11 |
* |
12 |
* Version for color slide ouput. |
13 |
* Link with grafpac driver "DS": |
14 |
* link slide.obj,color.obj,sys_grafpac:ds/lib |
15 |
*/ |
16 |
|
17 |
#include <stdio.h> |
18 |
|
19 |
#include "color.h" |
20 |
|
21 |
#include "random.h" |
22 |
|
23 |
|
24 |
#define XSIZE 4096 /* device width */ |
25 |
#define YSIZE 4096 /* device length */ |
26 |
|
27 |
#define NCOLS 4018 /* maximum # columns for output */ |
28 |
#define NROWS 2712 /* maximum # rows for output */ |
29 |
|
30 |
#define XCENTER 2048 /* center for x */ |
31 |
#define YCENTER 2048 /* center for y */ |
32 |
|
33 |
int nrows; /* number of rows for output */ |
34 |
int ncols; /* number of columns for output */ |
35 |
|
36 |
int xoffset; /* offset for x */ |
37 |
int yoffset; /* offset for y */ |
38 |
|
39 |
#define RSIZ 17 /* size of response map */ |
40 |
|
41 |
float rmap[2*RSIZ] = { /* response map */ |
42 |
.0, .0, |
43 |
.0004, .059, |
44 |
.0008, .122, |
45 |
.0018, .184, |
46 |
.0033, .247, |
47 |
.0061, .310, |
48 |
.0119, .373, |
49 |
.0202, .435, |
50 |
.0373, .498, |
51 |
.065, .561, |
52 |
.113, .624, |
53 |
.199, .686, |
54 |
.300, .749, |
55 |
.432, .812, |
56 |
.596, .875, |
57 |
.767, .937, |
58 |
1.000, 1.000, |
59 |
}; |
60 |
|
61 |
|
62 |
main(argc, argv) |
63 |
int argc; |
64 |
char **argv; |
65 |
{ |
66 |
extern char *malloc(); |
67 |
FILE *fin; |
68 |
COLOR scanline[NCOLS]; |
69 |
int mult; |
70 |
char sbuf[128]; |
71 |
int i, j; |
72 |
|
73 |
/* |
74 |
for (i = 1; i < argc; i++) |
75 |
if (argv[i][0] == '-') |
76 |
switch (argv[i][1]) { |
77 |
default: |
78 |
fprintf(stderr, "unknown option: %s\n", argv[i]); |
79 |
exit(1); |
80 |
break; |
81 |
} |
82 |
else |
83 |
break; |
84 |
|
85 |
*/ |
86 |
argc = 2; |
87 |
argv[1] = "pixfile"; |
88 |
i = 1; |
89 |
|
90 |
if (argc - i < 1) |
91 |
fin = 0; |
92 |
else if ((fin = fopen(argv[i], "r")) == NULL) { |
93 |
fprintf(stderr, "%s: can't open file \"%s\"\n", |
94 |
argv[0], argv[i]); |
95 |
exit(1); |
96 |
} |
97 |
|
98 |
/* discard header */ |
99 |
while (fgets(sbuf, sizeof(sbuf), fin) != NULL && sbuf[0] != '\n') |
100 |
; |
101 |
/* get picture size */ |
102 |
if (fgets(sbuf, sizeof(sbuf), fin) == NULL || |
103 |
sscanf(sbuf, "-Y %d +X %d\n", &nrows, &ncols) != 2) { |
104 |
fprintf(stderr, "%s: bad picture size\n", argv[0]); |
105 |
exit(1); |
106 |
} |
107 |
|
108 |
if (ncols > NCOLS || nrows > NROWS) { |
109 |
fprintf(stderr, "%s: resolution mismatch\n", argv[0]); |
110 |
exit(1); |
111 |
} |
112 |
|
113 |
mult = NCOLS/ncols; |
114 |
if (NROWS/nrows < mult) |
115 |
mult = NROWS/nrows; |
116 |
|
117 |
xoffset = XCENTER/mult - ncols/2; |
118 |
yoffset = YCENTER/mult - nrows/2; |
119 |
|
120 |
tvinit(); |
121 |
i = XSIZE/mult; j = YSIZE/mult; tvvrs(&i, &j); |
122 |
i = 12; tvset("ifile", &i); |
123 |
tvset("nrco", "rgb"); |
124 |
|
125 |
for (i = nrows-1; i >= 0; i--) { |
126 |
if (freadscan(scanline, ncols, fin) < 0) { |
127 |
fprintf(stderr, "%s: read error in row %d\n", |
128 |
argv[0], i); |
129 |
exit(1); |
130 |
} |
131 |
scanout(scanline, i); |
132 |
} |
133 |
|
134 |
tvsend(); |
135 |
tvend(); |
136 |
|
137 |
return(0); |
138 |
} |
139 |
|
140 |
|
141 |
scanout(scan, y) /* output scan line */ |
142 |
register COLOR *scan; |
143 |
int y; |
144 |
{ |
145 |
static int zero; |
146 |
static float rgb[3][NCOLS]; |
147 |
int i; |
148 |
register int j; |
149 |
|
150 |
zero = xoffset; |
151 |
y += yoffset; |
152 |
|
153 |
for (j = 0; j < ncols; j++) { |
154 |
mapcolor(scan[j], scan[j]); |
155 |
for (i = 0; i < 3; i++) |
156 |
rgb[i][j] = scan[j][i] + (.5-frandom())/255.0; |
157 |
} |
158 |
tvrstc(&zero, &y, rgb[0], rgb[1], rgb[2], &ncols); |
159 |
} |
160 |
|
161 |
|
162 |
mapcolor(c1, c2) /* map c1 into c2 */ |
163 |
register COLOR c1; |
164 |
COLOR c2; |
165 |
{ |
166 |
static float *mp[3] = {rmap, rmap, rmap}; |
167 |
double x; |
168 |
register int i; |
169 |
|
170 |
for (i = 0; i < 3; i++) { |
171 |
if (colval(c1,i) >= 1.0) { |
172 |
colval(c2,i) = 1.0; |
173 |
continue; |
174 |
} |
175 |
while (colval(c1,i) >= mp[i][2]) |
176 |
mp[i] += 2; |
177 |
while (colval(c1,i) < mp[i][0]) |
178 |
mp[i] -= 2; |
179 |
x = (colval(c1,i) - mp[i][0]) / (mp[i][2] - mp[i][0]); |
180 |
colval(c2,i) = (1.0-x)*mp[i][1] + x*mp[i][3]; |
181 |
} |
182 |
} |