| 1 |
#ifndef lint
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| 2 |
static const char RCSid[] = "$Id: aedimage.c,v 2.6 2004/01/02 12:47:01 schorsch Exp $";
|
| 3 |
#endif
|
| 4 |
/*
|
| 5 |
* aedimage.c - RADIANCE driver for AED 512 terminal.
|
| 6 |
*
|
| 7 |
* 3/20/86
|
| 8 |
* 3/3/88 Added calls to Paul Heckbert's ciq routines
|
| 9 |
*/
|
| 10 |
|
| 11 |
#include <stdio.h>
|
| 12 |
#include <math.h>
|
| 13 |
#include <signal.h>
|
| 14 |
#include <sys/ioctl.h>
|
| 15 |
|
| 16 |
#include "pic.h"
|
| 17 |
#include "resolu.h"
|
| 18 |
#include "color.h"
|
| 19 |
|
| 20 |
|
| 21 |
/* AED command characters */
|
| 22 |
|
| 23 |
#define AEDFMT "1888N" /* Format string to send to AED */
|
| 24 |
#define CSTAT 0100 /* Console status: lower case */
|
| 25 |
#define SCS 96 /* Set Console Status */
|
| 26 |
#define SCT 75 /* Set color lookup table */
|
| 27 |
#define SEC 67 /* Set color for vector drawing */
|
| 28 |
#define MOV 81 /* Set CAP (current access pointer) to x, y */
|
| 29 |
#define MVR 105 /* Set CAP relative */
|
| 30 |
#define DVA 65 /* Draw vector to new CAP x, y */
|
| 31 |
#define DVR 108 /* Draw vector relative */
|
| 32 |
#define WHS 88 /* Write horizontal scan */
|
| 33 |
#define WHR 92 /* Write horizontal runs */
|
| 34 |
#define OPT 40 /* Miscellaneous terminal control */
|
| 35 |
#define SEN 71 /* Set encoding types */
|
| 36 |
#define RST 48 /* Reset terminal */
|
| 37 |
#define FFD 12 /* Clear screen */
|
| 38 |
#define SCS 96 /* Set status */
|
| 39 |
#define DAI 114 /* Define area of interest */
|
| 40 |
#define EJC 85 /* Enable Joystick cursor positioning */
|
| 41 |
#define DJC 100 /* Disable Joystick cursor positioning */
|
| 42 |
#define SCC 99 /* Set Cursor Colors */
|
| 43 |
#define SCP 93 /* Set Cursor Parameters */
|
| 44 |
#define RCP 106 /* Read Cursor Position */
|
| 45 |
#define MAXRLEN 255 /* Maximum runlength for a span */
|
| 46 |
#define NUL 0 /* Null terminates run sequences */
|
| 47 |
#define ESC 27 /* Escape starts a command sequence */
|
| 48 |
#define END 1 /* Ctrl-A used to terminate command mode */
|
| 49 |
|
| 50 |
#define BLK 0 /* color table entry for black */
|
| 51 |
#define WHT 7 /* color table entry for white */
|
| 52 |
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| 53 |
#define command(c) (putc(ESC, stdout), putc(c, stdout))
|
| 54 |
#define byte(b) putc(b, stdout)
|
| 55 |
#define flush() fflush(stdout)
|
| 56 |
|
| 57 |
#define GAMMA 2.5 /* gamma value used in correction */
|
| 58 |
|
| 59 |
#define MINCOLOR 8 /* start of device color table */
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| 60 |
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| 61 |
#define NCOLORS 248 /* available color table size */
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| 62 |
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| 63 |
#define NROWS 512 /* maximum # rows for output */
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| 64 |
#define NCOLS 512 /* maximum # columns for output */
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| 65 |
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| 66 |
int dither = 0; /* dither colors? */
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| 67 |
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| 68 |
int greyscale = 0; /* grey only? */
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| 69 |
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| 70 |
int initialized = 0;
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| 71 |
struct sgttyb oldflags;
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| 72 |
int oldlmode;
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| 73 |
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| 74 |
int intrcnt = 0; /* interrupt well */
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| 75 |
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| 76 |
#define disintr() (intrcnt--) /* disable interrupts */
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| 77 |
#define enaintr() onintr() /* enable interrupts */
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| 78 |
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| 79 |
char *progname;
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| 80 |
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| 81 |
char errmsg[128];
|
| 82 |
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| 83 |
COLR scanline[NCOLS];
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| 84 |
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| 85 |
colormap colrtbl;
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| 86 |
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| 87 |
int cury;
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| 88 |
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| 89 |
int xmax, ymax;
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| 90 |
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| 91 |
FILE *fin;
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| 92 |
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| 93 |
extern long ftell();
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| 94 |
long scanpos[NROWS];
|
| 95 |
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| 96 |
double exposure = 1.0;
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| 97 |
int wrong_fmt = 0;
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| 98 |
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| 99 |
static gethfunc checkhead;
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| 100 |
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| 101 |
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| 102 |
main(argc, argv)
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| 103 |
int argc;
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| 104 |
char *argv[];
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| 105 |
{
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| 106 |
int onintr();
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| 107 |
char sbuf[256];
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| 108 |
register int i;
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| 109 |
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| 110 |
progname = argv[0];
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| 112 |
#ifdef SIGTSTP
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| 113 |
signal(SIGTSTP, SIG_IGN);
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| 114 |
#endif
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| 115 |
if (signal(SIGINT, onintr) == SIG_IGN)
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| 116 |
signal(SIGINT, SIG_IGN);
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| 117 |
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| 118 |
for (i = 1; i < argc; i++)
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| 119 |
if (argv[i][0] == '-')
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| 120 |
switch (argv[i][1]) {
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| 121 |
case 'd':
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| 122 |
dither = !dither;
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| 123 |
break;
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| 124 |
case 'b':
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| 125 |
greyscale = !greyscale;
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break;
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| 127 |
default:
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goto userr;
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| 129 |
}
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| 130 |
else
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| 131 |
break;
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| 132 |
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| 133 |
if (i+1 != argc)
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| 134 |
goto userr;
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| 135 |
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| 136 |
if ((fin = fopen(argv[i], "r")) == NULL) {
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| 137 |
sprintf(errmsg, "can't open file \"%s\"", argv[i]);
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| 138 |
quitmsg(errmsg);
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| 139 |
}
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| 140 |
/* get header */
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| 141 |
getheader(fin, checkhead, NULL);
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| 142 |
if (wrong_fmt)
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| 143 |
quitmsg("input must be a Radiance picture");
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| 144 |
/* get picture dimensions */
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| 145 |
if (fgetresolu(&xmax, &ymax, fin) < 0)
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| 146 |
quitmsg("bad picture size");
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| 147 |
if (xmax > NCOLS || ymax > NROWS)
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| 148 |
quitmsg("resolution mismatch");
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| 149 |
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| 150 |
init(); /* initialize terminal for output */
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| 151 |
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| 152 |
for (i = 0; i < NROWS; i++)
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| 153 |
scanpos[i] = -1;
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| 154 |
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| 155 |
if (greyscale) /* map colors and display */
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| 156 |
biq(dither,NCOLORS,1,colrtbl);
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| 157 |
else
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| 158 |
ciq(dither,NCOLORS,1,colrtbl);
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| 159 |
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| 160 |
loopcom();
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| 161 |
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| 162 |
quitmsg(NULL);
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| 163 |
userr:
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fprintf(stderr, "Usage: %s [-d][-b] input\n", progname);
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| 165 |
quit(1);
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| 166 |
}
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| 167 |
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| 168 |
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| 169 |
static int
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| 170 |
checkhead( /* deal with line from header */
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| 171 |
char *line,
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| 172 |
void *p
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| 173 |
)
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| 174 |
{
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| 175 |
char fmt[32];
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| 176 |
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| 177 |
if (isexpos(line))
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| 178 |
exposure *= exposval(line);
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| 179 |
else if (isformat(line)) {
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| 180 |
formatval(fmt, line);
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| 181 |
wrong_fmt = strcmp(fmt, COLRFMT);
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| 182 |
}
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| 183 |
return(0);
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| 184 |
}
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| 185 |
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| 186 |
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| 187 |
init() /* initialize terminal */
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| 188 |
{
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| 189 |
struct sgttyb flags;
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| 190 |
int lmode;
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| 191 |
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| 192 |
if (isatty(1)) {
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| 193 |
/* Set literal mode so AED gets bit 8 */
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| 194 |
ioctl(1, TIOCLGET, &oldlmode);
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| 195 |
lmode = oldlmode | LLITOUT | LNOFLSH;
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| 196 |
ioctl(1, TIOCLSET, &lmode);
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| 197 |
ioctl(1, TIOCLGET, &lmode); /* 4.2 bug */
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| 198 |
/* Turn terminal echoing off */
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| 199 |
ioctl(1, TIOCGETP, &oldflags);
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| 200 |
ioctl(1, TIOCGETP, &flags);
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| 201 |
flags.sg_flags &= ~ECHO;
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| 202 |
ioctl(1, TIOCSETP, &flags);
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| 203 |
initialized = 1;
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| 204 |
} else
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| 205 |
quitmsg("output must be to a terminal");
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| 206 |
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| 207 |
/* Reset AED and tell it the data format */
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| 208 |
command(RST);
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| 209 |
longwait(2);
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| 210 |
command(OPT);
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| 211 |
byte(6); byte(1); /* AED command set */
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| 212 |
command(SEN); fputs(AEDFMT, stdout);
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| 213 |
command(SCS); byte(CSTAT); /* console status */
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| 214 |
command(FFD); /* clear screen */
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| 215 |
flush();
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| 216 |
}
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| 217 |
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| 218 |
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| 219 |
onintr() /* die gracefully */
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| 220 |
{
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| 221 |
if (++intrcnt > 0)
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| 222 |
quitmsg("interrupt");
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| 223 |
}
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| 224 |
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| 225 |
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| 226 |
quitmsg(err) /* uninitialize terminal and exit */
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| 227 |
char *err;
|
| 228 |
{
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| 229 |
if (initialized) { /* close AED */
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| 230 |
command(DJC); /* disable cursor */
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| 231 |
command(SEC);
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| 232 |
byte(WHT); /* Set color to white */
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| 233 |
aedsetcap(0, 0); /* Put cursor in a good place */
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| 234 |
byte(END);
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| 235 |
flush();
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| 236 |
ioctl(1, TIOCSETP, &oldflags);
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| 237 |
ioctl(1, TIOCLSET, &oldlmode);
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| 238 |
putchar('\n');
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| 239 |
}
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| 240 |
if (err != NULL) {
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| 241 |
fprintf(stderr, "%s: %s\n", progname, err);
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| 242 |
exit(1);
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| 243 |
}
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| 244 |
exit(0);
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| 245 |
}
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| 246 |
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| 247 |
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| 248 |
void
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| 249 |
eputs(s)
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| 250 |
char *s;
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| 251 |
{
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| 252 |
fputs(s, stderr);
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| 253 |
}
|
| 254 |
|
| 255 |
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| 256 |
void
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| 257 |
quit(status)
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| 258 |
int status;
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| 259 |
{
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| 260 |
quitmsg(status ? "aborted" : NULL);
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| 261 |
}
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| 262 |
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| 263 |
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| 264 |
loopcom() /* print pixel values interactively */
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| 265 |
{
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| 266 |
int coffset[3]; /* color table offset */
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| 267 |
struct sgttyb flags;
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| 268 |
COLOR cval, ctmp;
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| 269 |
int rept, x, y, j;
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| 270 |
register int com, i;
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| 271 |
/* Set raw mode on input */
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| 272 |
ioctl(0, TIOCGETP, &flags);
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| 273 |
flags.sg_flags |= RAW;
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| 274 |
flags.sg_flags &= ~ECHO;
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| 275 |
ioctl(0, TIOCSETP, &flags);
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| 276 |
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| 277 |
coffset[0] = coffset[1] = coffset[2] = 0;
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| 278 |
/* set cursor type */
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| 279 |
command(SCC);
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| 280 |
byte(BLK); byte(WHT); byte(15);
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| 281 |
command(SCP);
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| 282 |
byte('+'); byte(0); byte(1);
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| 283 |
/* loop on command */
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| 284 |
for ( ; ; ) {
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| 285 |
command(EJC); /* enable cursor */
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| 286 |
flush();
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| 287 |
rept = 0; /* get command */
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| 288 |
while ((com = getc(stdin)) >= '0' && com <= '9')
|
| 289 |
rept = rept*10 + com - '0';
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| 290 |
if (rept == 0) rept = 1;
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| 291 |
command(DJC); /* disable cursor */
|
| 292 |
switch (com) {
|
| 293 |
case '\r':
|
| 294 |
case '\n':
|
| 295 |
case 'l':
|
| 296 |
case 'L':
|
| 297 |
case 'c':
|
| 298 |
case 'C':
|
| 299 |
case 'p':
|
| 300 |
case 'P':
|
| 301 |
case '=':
|
| 302 |
aedgetcap(&x, &y); /* get cursor position */
|
| 303 |
y = ymax-1-y;
|
| 304 |
if (y < 0 || scanpos[y] == -1) /* off picture? */
|
| 305 |
break;
|
| 306 |
/* get value */
|
| 307 |
setcolor(cval, 0.0, 0.0, 0.0);
|
| 308 |
for (j = rept-1; j >= 0; j--) {
|
| 309 |
if (y+j >= NROWS || scanpos[y+j] == -1)
|
| 310 |
continue;
|
| 311 |
getscan(y+j);
|
| 312 |
for (i = 0; i < rept; i++)
|
| 313 |
if (x+i < xmax) {
|
| 314 |
colr_color(ctmp, scanline[x+i]);
|
| 315 |
addcolor(cval, ctmp);
|
| 316 |
}
|
| 317 |
}
|
| 318 |
scalecolor(cval, 1.0/(rept*rept));
|
| 319 |
/* print value */
|
| 320 |
command(SEC);
|
| 321 |
byte(scanline[(x+20)%xmax][EXP] >= COLXS ? BLK : WHT);
|
| 322 |
byte(END);
|
| 323 |
switch (com) {
|
| 324 |
case '\r':
|
| 325 |
case '\n':
|
| 326 |
printf("%-3g", intens(cval)/exposure);
|
| 327 |
break;
|
| 328 |
case 'l':
|
| 329 |
case 'L':
|
| 330 |
printf("%-3gL", luminance(cval)/exposure);
|
| 331 |
break;
|
| 332 |
case 'c':
|
| 333 |
case 'C':
|
| 334 |
printf("(%.2f,%.2f,%.2f)",
|
| 335 |
colval(cval,RED),
|
| 336 |
colval(cval,GRN),
|
| 337 |
colval(cval,BLU));
|
| 338 |
break;
|
| 339 |
case 'p':
|
| 340 |
case 'P':
|
| 341 |
printf("(%d,%d)", x, y);
|
| 342 |
break;
|
| 343 |
case '=':
|
| 344 |
printf("(%d,%d,%d)", coffset[0],
|
| 345 |
coffset[1], coffset[2]);
|
| 346 |
break;
|
| 347 |
}
|
| 348 |
break;
|
| 349 |
case 'w':
|
| 350 |
rept = -rept;
|
| 351 |
case 'W':
|
| 352 |
coffset[0] += rept;
|
| 353 |
coffset[1] += rept;
|
| 354 |
coffset[2] += rept;
|
| 355 |
movecolor(coffset);
|
| 356 |
break;
|
| 357 |
case 'r':
|
| 358 |
rept = -rept;
|
| 359 |
case 'R':
|
| 360 |
coffset[0] += rept;
|
| 361 |
movecolor(coffset);
|
| 362 |
break;
|
| 363 |
case 'g':
|
| 364 |
rept = -rept;
|
| 365 |
case 'G':
|
| 366 |
coffset[1] += rept;
|
| 367 |
movecolor(coffset);
|
| 368 |
break;
|
| 369 |
case 'b':
|
| 370 |
rept = -rept;
|
| 371 |
case 'B':
|
| 372 |
coffset[2] += rept;
|
| 373 |
movecolor(coffset);
|
| 374 |
break;
|
| 375 |
case '!':
|
| 376 |
coffset[0] = coffset[1] = coffset[2] = 0;
|
| 377 |
movecolor(coffset);
|
| 378 |
break;
|
| 379 |
case 'C'-'@':
|
| 380 |
case 'q':
|
| 381 |
case 'Q':
|
| 382 |
return;
|
| 383 |
}
|
| 384 |
}
|
| 385 |
}
|
| 386 |
|
| 387 |
|
| 388 |
getscan(y)
|
| 389 |
int y;
|
| 390 |
{
|
| 391 |
if (y != cury) {
|
| 392 |
if (scanpos[y] == -1)
|
| 393 |
quitmsg("cannot seek in getscan");
|
| 394 |
if (fseek(fin, scanpos[y], 0) == -1)
|
| 395 |
quitmsg("fseek error");
|
| 396 |
cury = y;
|
| 397 |
} else
|
| 398 |
scanpos[y] = ftell(fin);
|
| 399 |
|
| 400 |
if (freadcolrs(scanline, xmax, fin) < 0)
|
| 401 |
quitmsg("read error");
|
| 402 |
|
| 403 |
cury++;
|
| 404 |
}
|
| 405 |
|
| 406 |
|
| 407 |
picreadline3(y, l3) /* read in 3-byte scanline */
|
| 408 |
int y;
|
| 409 |
register rgbpixel *l3;
|
| 410 |
{
|
| 411 |
register int i;
|
| 412 |
/* read scanline */
|
| 413 |
getscan(y);
|
| 414 |
/* convert scanline */
|
| 415 |
normcolrs(scanline, xmax, 0);
|
| 416 |
for (i = 0; i < xmax; i++) {
|
| 417 |
l3[i].r = scanline[i][RED];
|
| 418 |
l3[i].g = scanline[i][GRN];
|
| 419 |
l3[i].b = scanline[i][BLU];
|
| 420 |
}
|
| 421 |
}
|
| 422 |
|
| 423 |
|
| 424 |
picwriteline(y, l) /* output scan line of pixel values */
|
| 425 |
int y;
|
| 426 |
register pixel *l;
|
| 427 |
{
|
| 428 |
int curpix;
|
| 429 |
register int n, ncols;
|
| 430 |
|
| 431 |
disintr(); /* disable interrupts */
|
| 432 |
aedsetcap(0, ymax-1-y);
|
| 433 |
command(DAI);
|
| 434 |
aedcoord(xmax-1, ymax-1-y);
|
| 435 |
ncols = xmax;
|
| 436 |
if (dither) { /* pixel run lengths short */
|
| 437 |
command(WHS);
|
| 438 |
while (ncols-- > 0)
|
| 439 |
byte(MINCOLOR + *l++);
|
| 440 |
} else { /* pixel run lengths long */
|
| 441 |
command(WHR);
|
| 442 |
while (ncols-- > 0) {
|
| 443 |
curpix = *l++;
|
| 444 |
for (n = 1; n < MAXRLEN; n++) {
|
| 445 |
if (ncols <= 0 || *l != curpix)
|
| 446 |
break;
|
| 447 |
l++; ncols--;
|
| 448 |
}
|
| 449 |
byte(n);
|
| 450 |
byte(MINCOLOR + curpix);
|
| 451 |
}
|
| 452 |
byte(NUL);
|
| 453 |
}
|
| 454 |
flush();
|
| 455 |
enaintr(); /* enable interrupts */
|
| 456 |
}
|
| 457 |
|
| 458 |
|
| 459 |
/*
|
| 460 |
* aedsetcap - sets AED's current access pointer to (x, y). Used
|
| 461 |
* before writing a span to put it in the right place.
|
| 462 |
*/
|
| 463 |
|
| 464 |
aedsetcap(x, y)
|
| 465 |
register int x, y;
|
| 466 |
{
|
| 467 |
command(MOV);
|
| 468 |
aedcoord(x, y);
|
| 469 |
}
|
| 470 |
|
| 471 |
/*
|
| 472 |
* aedcoord - puts out an (x, y) coordinate in AED 8 bit format.
|
| 473 |
*/
|
| 474 |
|
| 475 |
aedcoord(x, y)
|
| 476 |
register int x, y;
|
| 477 |
{
|
| 478 |
putc(((x >> 4) & 0x30) | ((y >> 8) & 0x3), stdout);
|
| 479 |
putc(x & 0xff, stdout);
|
| 480 |
putc(y & 0xff, stdout);
|
| 481 |
}
|
| 482 |
|
| 483 |
|
| 484 |
aedgetcap(xp, yp) /* get cursor postion */
|
| 485 |
int *xp, *yp;
|
| 486 |
{
|
| 487 |
register int c;
|
| 488 |
/* get cursor postition */
|
| 489 |
command(RCP);
|
| 490 |
flush();
|
| 491 |
c = getc(stdin);
|
| 492 |
*xp = (c & 0x30) << 4;
|
| 493 |
*yp = (c & 0x3) << 8;
|
| 494 |
*xp |= getc(stdin);
|
| 495 |
*yp |= getc(stdin);
|
| 496 |
}
|
| 497 |
|
| 498 |
|
| 499 |
movecolor(offset) /* move our color table up or down */
|
| 500 |
int offset[3];
|
| 501 |
{
|
| 502 |
register int i, j, c;
|
| 503 |
|
| 504 |
disintr();
|
| 505 |
command(SCT);
|
| 506 |
byte(MINCOLOR);
|
| 507 |
byte(NCOLORS);
|
| 508 |
for (i = 0; i < NCOLORS; i++)
|
| 509 |
for (j = 0; j < 3; j++) {
|
| 510 |
c = colrtbl[j][i] + offset[j];
|
| 511 |
if (c < 0)
|
| 512 |
byte(0);
|
| 513 |
else if (c > 255)
|
| 514 |
byte(255);
|
| 515 |
else
|
| 516 |
byte(c);
|
| 517 |
}
|
| 518 |
shortwait(20);
|
| 519 |
enaintr();
|
| 520 |
}
|
| 521 |
|
| 522 |
|
| 523 |
picreadcm(map) /* do gamma correction */
|
| 524 |
colormap map;
|
| 525 |
{
|
| 526 |
register int i, val;
|
| 527 |
|
| 528 |
for (i = 0; i < 256; i++) {
|
| 529 |
val = pow((i+0.5)/256.0, 1.0/GAMMA) * 256.0;
|
| 530 |
map[0][i] = map[1][i] = map[2][i] = val;
|
| 531 |
}
|
| 532 |
}
|
| 533 |
|
| 534 |
|
| 535 |
picwritecm(map) /* write out color map */
|
| 536 |
colormap map;
|
| 537 |
{
|
| 538 |
register int i, j;
|
| 539 |
|
| 540 |
disintr();
|
| 541 |
command(SCT);
|
| 542 |
byte(MINCOLOR);
|
| 543 |
byte(NCOLORS);
|
| 544 |
for (i = 0; i < NCOLORS; i++)
|
| 545 |
for (j = 0; j < 3; j++)
|
| 546 |
byte(map[j][i]);
|
| 547 |
shortwait(20);
|
| 548 |
enaintr();
|
| 549 |
}
|
| 550 |
|
| 551 |
|
| 552 |
longwait(t) /* longer wait */
|
| 553 |
int t;
|
| 554 |
{
|
| 555 |
flush();
|
| 556 |
sleep(t);
|
| 557 |
}
|
| 558 |
|
| 559 |
|
| 560 |
shortwait(t) /* shorter wait */
|
| 561 |
int t;
|
| 562 |
{
|
| 563 |
register long l = t*1000;
|
| 564 |
|
| 565 |
flush();
|
| 566 |
while (l--)
|
| 567 |
;
|
| 568 |
}
|
