1 |
greg |
1.1 |
/* Copyright (c) 1986 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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#endif |
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/* |
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* aedimage.c - RADIANCE driver for AED 512 terminal. |
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* |
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* 3/20/86 |
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* 3/3/88 Added calls to Paul Heckbert's ciq routines |
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*/ |
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#include <stdio.h> |
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#include <signal.h> |
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#include <sys/ioctl.h> |
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#include "pic.h" |
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#include "color.h" |
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25 |
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/* AED command characters */ |
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#define AEDFMT "1888N" /* Format string to send to AED */ |
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#define CSTAT 0100 /* Console status: lower case */ |
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#define SCS 96 /* Set Console Status */ |
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#define SCT 75 /* Set color lookup table */ |
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#define SEC 67 /* Set color for vector drawing */ |
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#define MOV 81 /* Set CAP (current access pointer) to x, y */ |
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#define MVR 105 /* Set CAP relative */ |
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#define DVA 65 /* Draw vector to new CAP x, y */ |
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#define DVR 108 /* Draw vector relative */ |
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#define WHS 88 /* Write horizontal scan */ |
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#define WHR 92 /* Write horizontal runs */ |
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#define OPT 40 /* Miscellaneous terminal control */ |
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#define SEN 71 /* Set encoding types */ |
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#define RST 48 /* Reset terminal */ |
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#define FFD 12 /* Clear screen */ |
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#define SCS 96 /* Set status */ |
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#define DAI 114 /* Define area of interest */ |
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#define EJC 85 /* Enable Joystick cursor positioning */ |
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#define DJC 100 /* Disable Joystick cursor positioning */ |
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#define SCC 99 /* Set Cursor Colors */ |
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#define SCP 93 /* Set Cursor Parameters */ |
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#define RCP 106 /* Read Cursor Position */ |
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#define MAXRLEN 255 /* Maximum runlength for a span */ |
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#define NUL 0 /* Null terminates run sequences */ |
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#define ESC 27 /* Escape starts a command sequence */ |
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#define END 1 /* Ctrl-A used to terminate command mode */ |
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#define BLK 0 /* color table entry for black */ |
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#define WHT 7 /* color table entry for white */ |
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#define command(c) (putc(ESC, stdout), putc(c, stdout)) |
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#define byte(b) putc(b, stdout) |
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#define flush() fflush(stdout) |
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greg |
1.2 |
#define GAMMA 2.5 /* gamma value used in correction */ |
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greg |
1.1 |
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#define MINCOLOR 8 /* start of device color table */ |
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#define NCOLORS 248 /* available color table size */ |
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#define NROWS 512 /* maximum # rows for output */ |
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#define NCOLS 512 /* maximum # columns for output */ |
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int dither = 0; /* dither colors? */ |
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int greyscale = 0; /* grey only? */ |
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int initialized = 0; |
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struct sgttyb oldflags; |
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int oldlmode; |
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int intrcnt = 0; /* interrupt well */ |
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#define disintr() (intrcnt--) /* disable interrupts */ |
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#define enaintr() onintr() /* enable interrupts */ |
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char *progname; |
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char errmsg[128]; |
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COLR scanline[NCOLS]; |
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colormap colrtbl; |
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int cury; |
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int xmax, ymax; |
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FILE *fin; |
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extern long ftell(); |
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long scanpos[NROWS]; |
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extern double atof(); |
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double exposure = 1.0; |
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main(argc, argv) |
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int argc; |
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char *argv[]; |
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{ |
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greg |
1.4 |
int onintr(), checkhead(); |
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greg |
1.1 |
char sbuf[256]; |
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register int i; |
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progname = argv[0]; |
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#ifdef SIGTSTP |
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signal(SIGTSTP, SIG_IGN); |
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#endif |
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if (signal(SIGINT, onintr) == SIG_IGN) |
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signal(SIGINT, SIG_IGN); |
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for (i = 1; i < argc; i++) |
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if (argv[i][0] == '-') |
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switch (argv[i][1]) { |
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case 'd': |
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dither = !dither; |
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break; |
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case 'b': |
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greyscale = !greyscale; |
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break; |
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default: |
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goto userr; |
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} |
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else |
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break; |
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if (i+1 != argc) |
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goto userr; |
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if ((fin = fopen(argv[i], "r")) == NULL) { |
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sprintf(errmsg, "can't open file \"%s\"", argv[i]); |
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quitmsg(errmsg); |
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} |
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/* get header */ |
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greg |
1.4 |
getheader(fin, checkhead); |
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greg |
1.1 |
/* get picture dimensions */ |
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greg |
1.3 |
if (fgetresolu(&xmax, &ymax, fin) != (YMAJOR|YDECR)) |
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greg |
1.1 |
quitmsg("bad picture size"); |
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if (xmax > NCOLS || ymax > NROWS) |
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quitmsg("resolution mismatch"); |
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init(); /* initialize terminal for output */ |
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for (i = 0; i < NROWS; i++) |
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scanpos[i] = -1; |
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if (greyscale) /* map colors and display */ |
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biq(dither,NCOLORS,1,colrtbl); |
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else |
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ciq(dither,NCOLORS,1,colrtbl); |
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loopcom(); |
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quitmsg(NULL); |
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userr: |
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fprintf(stderr, "Usage: %s [-d][-b] input\n", progname); |
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quit(1); |
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greg |
1.4 |
} |
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checkhead(line) /* deal with line from header */ |
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char *line; |
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{ |
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if (!strncmp(line, "EXPOSURE=", 9)) |
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exposure *= atof(line+9); |
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greg |
1.1 |
} |
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init() /* initialize terminal */ |
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{ |
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struct sgttyb flags; |
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int lmode; |
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if (isatty(1)) { |
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/* Set literal mode so AED gets bit 8 */ |
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ioctl(1, TIOCLGET, &oldlmode); |
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lmode = oldlmode | LLITOUT | LNOFLSH; |
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ioctl(1, TIOCLSET, &lmode); |
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ioctl(1, TIOCLGET, &lmode); /* 4.2 bug */ |
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/* Turn terminal echoing off */ |
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ioctl(1, TIOCGETP, &oldflags); |
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ioctl(1, TIOCGETP, &flags); |
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flags.sg_flags &= ~ECHO; |
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ioctl(1, TIOCSETP, &flags); |
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initialized = 1; |
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} else |
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quitmsg("output must be to a terminal"); |
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/* Reset AED and tell it the data format */ |
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command(RST); |
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longwait(2); |
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command(OPT); |
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byte(6); byte(1); /* AED command set */ |
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command(SEN); fputs(AEDFMT, stdout); |
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command(SCS); byte(CSTAT); /* console status */ |
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command(FFD); /* clear screen */ |
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flush(); |
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} |
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onintr() /* die gracefully */ |
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{ |
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if (++intrcnt > 0) |
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quitmsg("interrupt"); |
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} |
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quitmsg(err) /* uninitialize terminal and exit */ |
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char *err; |
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{ |
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if (initialized) { /* close AED */ |
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command(DJC); /* disable cursor */ |
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command(SEC); |
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byte(WHT); /* Set color to white */ |
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aedsetcap(0, 0); /* Put cursor in a good place */ |
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byte(END); |
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flush(); |
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ioctl(1, TIOCSETP, &oldflags); |
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ioctl(1, TIOCLSET, &oldlmode); |
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putchar('\n'); |
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} |
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if (err != NULL) { |
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fprintf(stderr, "%s: %s\n", progname, err); |
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exit(1); |
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} |
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exit(0); |
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} |
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eputs(s) |
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char *s; |
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{ |
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fputs(s, stderr); |
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} |
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quit(status) |
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int status; |
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{ |
248 |
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quitmsg(status ? "aborted" : NULL); |
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} |
250 |
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251 |
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loopcom() /* print pixel values interactively */ |
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{ |
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int coffset[3]; /* color table offset */ |
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struct sgttyb flags; |
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COLOR cval, ctmp; |
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int rept, x, y, j; |
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register int com, i; |
259 |
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/* Set raw mode on input */ |
260 |
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ioctl(0, TIOCGETP, &flags); |
261 |
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flags.sg_flags |= RAW; |
262 |
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flags.sg_flags &= ~ECHO; |
263 |
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ioctl(0, TIOCSETP, &flags); |
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265 |
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coffset[0] = coffset[1] = coffset[2] = 0; |
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/* set cursor type */ |
267 |
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command(SCC); |
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byte(BLK); byte(WHT); byte(15); |
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command(SCP); |
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byte('+'); byte(0); byte(1); |
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/* loop on command */ |
272 |
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for ( ; ; ) { |
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command(EJC); /* enable cursor */ |
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flush(); |
275 |
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rept = 0; /* get command */ |
276 |
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while ((com = getc(stdin)) >= '0' && com <= '9') |
277 |
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rept = rept*10 + com - '0'; |
278 |
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if (rept == 0) rept = 1; |
279 |
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command(DJC); /* disable cursor */ |
280 |
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switch (com) { |
281 |
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case '\r': |
282 |
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case '\n': |
283 |
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case 'l': |
284 |
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case 'L': |
285 |
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case 'c': |
286 |
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case 'C': |
287 |
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case 'p': |
288 |
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case 'P': |
289 |
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case '=': |
290 |
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aedgetcap(&x, &y); /* get cursor position */ |
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y = ymax-1-y; |
292 |
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if (y < 0 || scanpos[y] == -1) /* off picture? */ |
293 |
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break; |
294 |
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/* get value */ |
295 |
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setcolor(cval, 0.0, 0.0, 0.0); |
296 |
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for (j = rept-1; j >= 0; j--) { |
297 |
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if (y+j >= NROWS || scanpos[y+j] == -1) |
298 |
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continue; |
299 |
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getscan(y+j); |
300 |
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for (i = 0; i < rept; i++) |
301 |
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if (x+i < xmax) { |
302 |
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colr_color(ctmp, scanline[x+i]); |
303 |
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addcolor(cval, ctmp); |
304 |
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} |
305 |
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} |
306 |
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scalecolor(cval, 1.0/(rept*rept)); |
307 |
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/* print value */ |
308 |
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command(SEC); |
309 |
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byte(scanline[(x+20)%xmax][EXP] >= COLXS ? BLK : WHT); |
310 |
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byte(END); |
311 |
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switch (com) { |
312 |
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case '\r': |
313 |
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case '\n': |
314 |
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printf("%-3g", intens(cval)/exposure); |
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break; |
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case 'l': |
317 |
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case 'L': |
318 |
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printf("%-3gL", bright(cval)*683.0/exposure); |
319 |
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break; |
320 |
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case 'c': |
321 |
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case 'C': |
322 |
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printf("(%.2f,%.2f,%.2f)", |
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colval(cval,RED), |
324 |
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colval(cval,GRN), |
325 |
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colval(cval,BLU)); |
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break; |
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case 'p': |
328 |
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case 'P': |
329 |
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printf("(%d,%d)", x, y); |
330 |
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break; |
331 |
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case '=': |
332 |
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printf("(%d,%d,%d)", coffset[0], |
333 |
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coffset[1], coffset[2]); |
334 |
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break; |
335 |
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} |
336 |
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break; |
337 |
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case 'w': |
338 |
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rept = -rept; |
339 |
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case 'W': |
340 |
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coffset[0] += rept; |
341 |
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coffset[1] += rept; |
342 |
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coffset[2] += rept; |
343 |
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movecolor(coffset); |
344 |
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break; |
345 |
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case 'r': |
346 |
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rept = -rept; |
347 |
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case 'R': |
348 |
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coffset[0] += rept; |
349 |
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movecolor(coffset); |
350 |
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break; |
351 |
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case 'g': |
352 |
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rept = -rept; |
353 |
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case 'G': |
354 |
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coffset[1] += rept; |
355 |
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movecolor(coffset); |
356 |
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break; |
357 |
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case 'b': |
358 |
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rept = -rept; |
359 |
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case 'B': |
360 |
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coffset[2] += rept; |
361 |
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movecolor(coffset); |
362 |
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break; |
363 |
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case '!': |
364 |
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coffset[0] = coffset[1] = coffset[2] = 0; |
365 |
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movecolor(coffset); |
366 |
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break; |
367 |
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case 'C'-'@': |
368 |
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case 'q': |
369 |
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case 'Q': |
370 |
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return; |
371 |
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} |
372 |
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} |
373 |
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} |
374 |
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375 |
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376 |
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getscan(y) |
377 |
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int y; |
378 |
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{ |
379 |
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if (y != cury) { |
380 |
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if (scanpos[y] == -1) |
381 |
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quitmsg("cannot seek in getscan"); |
382 |
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if (fseek(fin, scanpos[y], 0) == -1) |
383 |
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quitmsg("fseek error"); |
384 |
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cury = y; |
385 |
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} else |
386 |
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scanpos[y] = ftell(fin); |
387 |
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388 |
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if (freadcolrs(scanline, xmax, fin) < 0) |
389 |
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quitmsg("read error"); |
390 |
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391 |
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cury++; |
392 |
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} |
393 |
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394 |
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395 |
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picreadline3(y, l3) /* read in 3-byte scanline */ |
396 |
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int y; |
397 |
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register rgbpixel *l3; |
398 |
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{ |
399 |
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register BYTE *l4; |
400 |
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register int shift, c; |
401 |
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int i; |
402 |
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403 |
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getscan(y); |
404 |
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/* convert scanline */ |
405 |
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for (l4=scanline[0], i=xmax; i--; l4+=4, l3++) { |
406 |
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shift = l4[EXP] - COLXS; |
407 |
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if (shift >= 8) { |
408 |
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l3->r = l3->g = l3->b = 255; |
409 |
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} else if (shift <= -8) { |
410 |
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l3->r = l3->g = l3->b = 0; |
411 |
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} else if (shift > 0) { |
412 |
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c = l4[RED] << shift; |
413 |
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l3->r = c > 255 ? 255 : c; |
414 |
|
|
c = l4[GRN] << shift; |
415 |
|
|
l3->g = c > 255 ? 255 : c; |
416 |
|
|
c = l4[BLU] << shift; |
417 |
|
|
l3->b = c > 255 ? 255 : c; |
418 |
|
|
} else if (shift < 0) { |
419 |
|
|
l3->r = l4[RED] >> -shift; |
420 |
|
|
l3->g = l4[GRN] >> -shift; |
421 |
|
|
l3->b = l4[BLU] >> -shift; |
422 |
|
|
} else { |
423 |
|
|
l3->r = l4[RED]; |
424 |
|
|
l3->g = l4[GRN]; |
425 |
|
|
l3->b = l4[BLU]; |
426 |
|
|
} |
427 |
|
|
} |
428 |
|
|
} |
429 |
|
|
|
430 |
|
|
|
431 |
|
|
picwriteline(y, l) /* output scan line of pixel values */ |
432 |
|
|
int y; |
433 |
|
|
register pixel *l; |
434 |
|
|
{ |
435 |
|
|
int curpix; |
436 |
|
|
register int n, ncols; |
437 |
|
|
|
438 |
|
|
disintr(); /* disable interrupts */ |
439 |
|
|
aedsetcap(0, ymax-1-y); |
440 |
|
|
command(DAI); |
441 |
|
|
aedcoord(xmax-1, ymax-1-y); |
442 |
|
|
ncols = xmax; |
443 |
|
|
if (dither) { /* pixel run lengths short */ |
444 |
|
|
command(WHS); |
445 |
|
|
while (ncols-- > 0) |
446 |
|
|
byte(MINCOLOR + *l++); |
447 |
|
|
} else { /* pixel run lengths long */ |
448 |
|
|
command(WHR); |
449 |
|
|
while (ncols-- > 0) { |
450 |
|
|
curpix = *l++; |
451 |
|
|
for (n = 1; n < MAXRLEN; n++) { |
452 |
|
|
if (ncols <= 0 || *l != curpix) |
453 |
|
|
break; |
454 |
|
|
l++; ncols--; |
455 |
|
|
} |
456 |
|
|
byte(n); |
457 |
|
|
byte(MINCOLOR + curpix); |
458 |
|
|
} |
459 |
|
|
byte(NUL); |
460 |
|
|
} |
461 |
|
|
flush(); |
462 |
|
|
enaintr(); /* enable interrupts */ |
463 |
|
|
} |
464 |
|
|
|
465 |
|
|
|
466 |
|
|
/* |
467 |
|
|
* aedsetcap - sets AED's current access pointer to (x, y). Used |
468 |
|
|
* before writing a span to put it in the right place. |
469 |
|
|
*/ |
470 |
|
|
|
471 |
|
|
aedsetcap(x, y) |
472 |
|
|
register int x, y; |
473 |
|
|
{ |
474 |
|
|
command(MOV); |
475 |
|
|
aedcoord(x, y); |
476 |
|
|
} |
477 |
|
|
|
478 |
|
|
/* |
479 |
|
|
* aedcoord - puts out an (x, y) coordinate in AED 8 bit format. |
480 |
|
|
*/ |
481 |
|
|
|
482 |
|
|
aedcoord(x, y) |
483 |
|
|
register int x, y; |
484 |
|
|
{ |
485 |
|
|
putc(((x >> 4) & 0x30) | ((y >> 8) & 0x3), stdout); |
486 |
|
|
putc(x & 0xff, stdout); |
487 |
|
|
putc(y & 0xff, stdout); |
488 |
|
|
} |
489 |
|
|
|
490 |
|
|
|
491 |
|
|
aedgetcap(xp, yp) /* get cursor postion */ |
492 |
|
|
int *xp, *yp; |
493 |
|
|
{ |
494 |
|
|
register int c; |
495 |
|
|
/* get cursor postition */ |
496 |
|
|
command(RCP); |
497 |
|
|
flush(); |
498 |
|
|
c = getc(stdin); |
499 |
|
|
*xp = (c & 0x30) << 4; |
500 |
|
|
*yp = (c & 0x3) << 8; |
501 |
|
|
*xp |= getc(stdin); |
502 |
|
|
*yp |= getc(stdin); |
503 |
|
|
} |
504 |
|
|
|
505 |
|
|
|
506 |
|
|
movecolor(offset) /* move our color table up or down */ |
507 |
|
|
int offset[3]; |
508 |
|
|
{ |
509 |
|
|
register int i, j, c; |
510 |
|
|
|
511 |
|
|
disintr(); |
512 |
|
|
command(SCT); |
513 |
|
|
byte(MINCOLOR); |
514 |
|
|
byte(NCOLORS); |
515 |
|
|
for (i = 0; i < NCOLORS; i++) |
516 |
|
|
for (j = 0; j < 3; j++) { |
517 |
|
|
c = colrtbl[j][i] + offset[j]; |
518 |
|
|
if (c < 0) |
519 |
|
|
byte(0); |
520 |
|
|
else if (c > 255) |
521 |
|
|
byte(255); |
522 |
|
|
else |
523 |
|
|
byte(c); |
524 |
|
|
} |
525 |
|
|
shortwait(20); |
526 |
|
|
enaintr(); |
527 |
|
|
} |
528 |
|
|
|
529 |
|
|
|
530 |
|
|
picreadcm(map) /* do gamma correction */ |
531 |
|
|
colormap map; |
532 |
|
|
{ |
533 |
|
|
extern double pow(); |
534 |
|
|
register int i, val; |
535 |
|
|
|
536 |
|
|
for (i = 0; i < 256; i++) { |
537 |
|
|
val = pow(i/256.0, 1.0/GAMMA) * 256.0; |
538 |
|
|
map[0][i] = map[1][i] = map[2][i] = val; |
539 |
|
|
} |
540 |
|
|
} |
541 |
|
|
|
542 |
|
|
|
543 |
|
|
picwritecm(map) /* write out color map */ |
544 |
|
|
colormap map; |
545 |
|
|
{ |
546 |
|
|
register int i, j; |
547 |
|
|
|
548 |
|
|
disintr(); |
549 |
|
|
command(SCT); |
550 |
|
|
byte(MINCOLOR); |
551 |
|
|
byte(NCOLORS); |
552 |
|
|
for (i = 0; i < NCOLORS; i++) |
553 |
|
|
for (j = 0; j < 3; j++) |
554 |
|
|
byte(map[j][i]); |
555 |
|
|
shortwait(20); |
556 |
|
|
enaintr(); |
557 |
|
|
} |
558 |
|
|
|
559 |
|
|
|
560 |
|
|
longwait(t) /* longer wait */ |
561 |
|
|
int t; |
562 |
|
|
{ |
563 |
|
|
flush(); |
564 |
|
|
sleep(t); |
565 |
|
|
} |
566 |
|
|
|
567 |
|
|
|
568 |
|
|
shortwait(t) /* shorter wait */ |
569 |
|
|
int t; |
570 |
|
|
{ |
571 |
|
|
register long l = t*1000; |
572 |
|
|
|
573 |
|
|
flush(); |
574 |
|
|
while (l--) |
575 |
|
|
; |
576 |
|
|
} |