| 1 |
/* Copyright (c) 1986 Regents of the University of California */ |
| 2 |
|
| 3 |
#ifndef lint |
| 4 |
static char SCCSid[] = "$SunId$ LBL"; |
| 5 |
#endif |
| 6 |
|
| 7 |
/* |
| 8 |
* aedimage.c - RADIANCE driver for AED 512 terminal. |
| 9 |
* |
| 10 |
* 3/20/86 |
| 11 |
* 3/3/88 Added calls to Paul Heckbert's ciq routines |
| 12 |
*/ |
| 13 |
|
| 14 |
#include <stdio.h> |
| 15 |
|
| 16 |
#include <signal.h> |
| 17 |
|
| 18 |
#include <sys/ioctl.h> |
| 19 |
|
| 20 |
#include "pic.h" |
| 21 |
|
| 22 |
#include "color.h" |
| 23 |
|
| 24 |
|
| 25 |
/* AED command characters */ |
| 26 |
|
| 27 |
#define AEDFMT "1888N" /* Format string to send to AED */ |
| 28 |
#define CSTAT 0100 /* Console status: lower case */ |
| 29 |
#define SCS 96 /* Set Console Status */ |
| 30 |
#define SCT 75 /* Set color lookup table */ |
| 31 |
#define SEC 67 /* Set color for vector drawing */ |
| 32 |
#define MOV 81 /* Set CAP (current access pointer) to x, y */ |
| 33 |
#define MVR 105 /* Set CAP relative */ |
| 34 |
#define DVA 65 /* Draw vector to new CAP x, y */ |
| 35 |
#define DVR 108 /* Draw vector relative */ |
| 36 |
#define WHS 88 /* Write horizontal scan */ |
| 37 |
#define WHR 92 /* Write horizontal runs */ |
| 38 |
#define OPT 40 /* Miscellaneous terminal control */ |
| 39 |
#define SEN 71 /* Set encoding types */ |
| 40 |
#define RST 48 /* Reset terminal */ |
| 41 |
#define FFD 12 /* Clear screen */ |
| 42 |
#define SCS 96 /* Set status */ |
| 43 |
#define DAI 114 /* Define area of interest */ |
| 44 |
#define EJC 85 /* Enable Joystick cursor positioning */ |
| 45 |
#define DJC 100 /* Disable Joystick cursor positioning */ |
| 46 |
#define SCC 99 /* Set Cursor Colors */ |
| 47 |
#define SCP 93 /* Set Cursor Parameters */ |
| 48 |
#define RCP 106 /* Read Cursor Position */ |
| 49 |
#define MAXRLEN 255 /* Maximum runlength for a span */ |
| 50 |
#define NUL 0 /* Null terminates run sequences */ |
| 51 |
#define ESC 27 /* Escape starts a command sequence */ |
| 52 |
#define END 1 /* Ctrl-A used to terminate command mode */ |
| 53 |
|
| 54 |
#define BLK 0 /* color table entry for black */ |
| 55 |
#define WHT 7 /* color table entry for white */ |
| 56 |
|
| 57 |
#define command(c) (putc(ESC, stdout), putc(c, stdout)) |
| 58 |
#define byte(b) putc(b, stdout) |
| 59 |
#define flush() fflush(stdout) |
| 60 |
|
| 61 |
#define GAMMA 2.5 /* gamma value used in correction */ |
| 62 |
|
| 63 |
#define MINCOLOR 8 /* start of device color table */ |
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|
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#define NCOLORS 248 /* available color table size */ |
| 66 |
|
| 67 |
#define NROWS 512 /* maximum # rows for output */ |
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#define NCOLS 512 /* maximum # columns for output */ |
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|
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int dither = 0; /* dither colors? */ |
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|
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int greyscale = 0; /* grey only? */ |
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|
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int initialized = 0; |
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struct sgttyb oldflags; |
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int oldlmode; |
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|
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int intrcnt = 0; /* interrupt well */ |
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|
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#define disintr() (intrcnt--) /* disable interrupts */ |
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#define enaintr() onintr() /* enable interrupts */ |
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|
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char *progname; |
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|
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char errmsg[128]; |
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|
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COLR scanline[NCOLS]; |
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|
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colormap colrtbl; |
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|
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int cury; |
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|
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int xmax, ymax; |
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|
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FILE *fin; |
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|
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extern long ftell(); |
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long scanpos[NROWS]; |
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|
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extern double atof(); |
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double exposure = 1.0; |
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|
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|
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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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int onintr(), checkhead(); |
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char sbuf[256]; |
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register int i; |
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|
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progname = argv[0]; |
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|
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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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|
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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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|
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if (i+1 != argc) |
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goto userr; |
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|
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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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getheader(fin, checkhead); |
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/* get picture dimensions */ |
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if (fgetresolu(&xmax, &ymax, fin) != (YMAJOR|YDECR)) |
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quitmsg("bad picture size"); |
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if (xmax > NCOLS || ymax > NROWS) |
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quitmsg("resolution mismatch"); |
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|
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init(); /* initialize terminal for output */ |
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|
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for (i = 0; i < NROWS; i++) |
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scanpos[i] = -1; |
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|
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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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|
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loopcom(); |
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|
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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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} |
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|
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|
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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 (isexpos(line)) |
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exposure *= exposval(line); |
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} |
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|
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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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|
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quit(status) |
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int status; |
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{ |
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quitmsg(status ? "aborted" : NULL); |
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} |
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|
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|
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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; |
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/* Set raw mode on input */ |
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ioctl(0, TIOCGETP, &flags); |
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flags.sg_flags |= RAW; |
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flags.sg_flags &= ~ECHO; |
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ioctl(0, TIOCSETP, &flags); |
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|
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coffset[0] = coffset[1] = coffset[2] = 0; |
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/* set cursor type */ |
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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 */ |
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for ( ; ; ) { |
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command(EJC); /* enable cursor */ |
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flush(); |
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rept = 0; /* get command */ |
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while ((com = getc(stdin)) >= '0' && com <= '9') |
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rept = rept*10 + com - '0'; |
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if (rept == 0) rept = 1; |
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command(DJC); /* disable cursor */ |
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switch (com) { |
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case '\r': |
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case '\n': |
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case 'l': |
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case 'L': |
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case 'c': |
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case 'C': |
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case 'p': |
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case 'P': |
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case '=': |
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aedgetcap(&x, &y); /* get cursor position */ |
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y = ymax-1-y; |
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if (y < 0 || scanpos[y] == -1) /* off picture? */ |
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break; |
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/* get value */ |
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setcolor(cval, 0.0, 0.0, 0.0); |
| 296 |
for (j = rept-1; j >= 0; j--) { |
| 297 |
if (y+j >= NROWS || scanpos[y+j] == -1) |
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continue; |
| 299 |
getscan(y+j); |
| 300 |
for (i = 0; i < rept; i++) |
| 301 |
if (x+i < xmax) { |
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colr_color(ctmp, scanline[x+i]); |
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addcolor(cval, ctmp); |
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} |
| 305 |
} |
| 306 |
scalecolor(cval, 1.0/(rept*rept)); |
| 307 |
/* print value */ |
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command(SEC); |
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byte(scanline[(x+20)%xmax][EXP] >= COLXS ? BLK : WHT); |
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byte(END); |
| 311 |
switch (com) { |
| 312 |
case '\r': |
| 313 |
case '\n': |
| 314 |
printf("%-3g", intens(cval)/exposure); |
| 315 |
break; |
| 316 |
case 'l': |
| 317 |
case 'L': |
| 318 |
printf("%-3gL", bright(cval)*683.0/exposure); |
| 319 |
break; |
| 320 |
case 'c': |
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case 'C': |
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printf("(%.2f,%.2f,%.2f)", |
| 323 |
colval(cval,RED), |
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colval(cval,GRN), |
| 325 |
colval(cval,BLU)); |
| 326 |
break; |
| 327 |
case 'p': |
| 328 |
case 'P': |
| 329 |
printf("(%d,%d)", x, y); |
| 330 |
break; |
| 331 |
case '=': |
| 332 |
printf("(%d,%d,%d)", coffset[0], |
| 333 |
coffset[1], coffset[2]); |
| 334 |
break; |
| 335 |
} |
| 336 |
break; |
| 337 |
case 'w': |
| 338 |
rept = -rept; |
| 339 |
case 'W': |
| 340 |
coffset[0] += rept; |
| 341 |
coffset[1] += rept; |
| 342 |
coffset[2] += rept; |
| 343 |
movecolor(coffset); |
| 344 |
break; |
| 345 |
case 'r': |
| 346 |
rept = -rept; |
| 347 |
case 'R': |
| 348 |
coffset[0] += rept; |
| 349 |
movecolor(coffset); |
| 350 |
break; |
| 351 |
case 'g': |
| 352 |
rept = -rept; |
| 353 |
case 'G': |
| 354 |
coffset[1] += rept; |
| 355 |
movecolor(coffset); |
| 356 |
break; |
| 357 |
case 'b': |
| 358 |
rept = -rept; |
| 359 |
case 'B': |
| 360 |
coffset[2] += rept; |
| 361 |
movecolor(coffset); |
| 362 |
break; |
| 363 |
case '!': |
| 364 |
coffset[0] = coffset[1] = coffset[2] = 0; |
| 365 |
movecolor(coffset); |
| 366 |
break; |
| 367 |
case 'C'-'@': |
| 368 |
case 'q': |
| 369 |
case 'Q': |
| 370 |
return; |
| 371 |
} |
| 372 |
} |
| 373 |
} |
| 374 |
|
| 375 |
|
| 376 |
getscan(y) |
| 377 |
int y; |
| 378 |
{ |
| 379 |
if (y != cury) { |
| 380 |
if (scanpos[y] == -1) |
| 381 |
quitmsg("cannot seek in getscan"); |
| 382 |
if (fseek(fin, scanpos[y], 0) == -1) |
| 383 |
quitmsg("fseek error"); |
| 384 |
cury = y; |
| 385 |
} else |
| 386 |
scanpos[y] = ftell(fin); |
| 387 |
|
| 388 |
if (freadcolrs(scanline, xmax, fin) < 0) |
| 389 |
quitmsg("read error"); |
| 390 |
|
| 391 |
cury++; |
| 392 |
} |
| 393 |
|
| 394 |
|
| 395 |
picreadline3(y, l3) /* read in 3-byte scanline */ |
| 396 |
int y; |
| 397 |
register rgbpixel *l3; |
| 398 |
{ |
| 399 |
register int i; |
| 400 |
/* read scanline */ |
| 401 |
getscan(y); |
| 402 |
/* convert scanline */ |
| 403 |
normcolrs(scanline, xmax, 0); |
| 404 |
for (i = 0; i < xmax; i++) { |
| 405 |
l3[i].r = scanline[i][RED]; |
| 406 |
l3[i].g = scanline[i][GRN]; |
| 407 |
l3[i].b = scanline[i][BLU]; |
| 408 |
} |
| 409 |
} |
| 410 |
|
| 411 |
|
| 412 |
picwriteline(y, l) /* output scan line of pixel values */ |
| 413 |
int y; |
| 414 |
register pixel *l; |
| 415 |
{ |
| 416 |
int curpix; |
| 417 |
register int n, ncols; |
| 418 |
|
| 419 |
disintr(); /* disable interrupts */ |
| 420 |
aedsetcap(0, ymax-1-y); |
| 421 |
command(DAI); |
| 422 |
aedcoord(xmax-1, ymax-1-y); |
| 423 |
ncols = xmax; |
| 424 |
if (dither) { /* pixel run lengths short */ |
| 425 |
command(WHS); |
| 426 |
while (ncols-- > 0) |
| 427 |
byte(MINCOLOR + *l++); |
| 428 |
} else { /* pixel run lengths long */ |
| 429 |
command(WHR); |
| 430 |
while (ncols-- > 0) { |
| 431 |
curpix = *l++; |
| 432 |
for (n = 1; n < MAXRLEN; n++) { |
| 433 |
if (ncols <= 0 || *l != curpix) |
| 434 |
break; |
| 435 |
l++; ncols--; |
| 436 |
} |
| 437 |
byte(n); |
| 438 |
byte(MINCOLOR + curpix); |
| 439 |
} |
| 440 |
byte(NUL); |
| 441 |
} |
| 442 |
flush(); |
| 443 |
enaintr(); /* enable interrupts */ |
| 444 |
} |
| 445 |
|
| 446 |
|
| 447 |
/* |
| 448 |
* aedsetcap - sets AED's current access pointer to (x, y). Used |
| 449 |
* before writing a span to put it in the right place. |
| 450 |
*/ |
| 451 |
|
| 452 |
aedsetcap(x, y) |
| 453 |
register int x, y; |
| 454 |
{ |
| 455 |
command(MOV); |
| 456 |
aedcoord(x, y); |
| 457 |
} |
| 458 |
|
| 459 |
/* |
| 460 |
* aedcoord - puts out an (x, y) coordinate in AED 8 bit format. |
| 461 |
*/ |
| 462 |
|
| 463 |
aedcoord(x, y) |
| 464 |
register int x, y; |
| 465 |
{ |
| 466 |
putc(((x >> 4) & 0x30) | ((y >> 8) & 0x3), stdout); |
| 467 |
putc(x & 0xff, stdout); |
| 468 |
putc(y & 0xff, stdout); |
| 469 |
} |
| 470 |
|
| 471 |
|
| 472 |
aedgetcap(xp, yp) /* get cursor postion */ |
| 473 |
int *xp, *yp; |
| 474 |
{ |
| 475 |
register int c; |
| 476 |
/* get cursor postition */ |
| 477 |
command(RCP); |
| 478 |
flush(); |
| 479 |
c = getc(stdin); |
| 480 |
*xp = (c & 0x30) << 4; |
| 481 |
*yp = (c & 0x3) << 8; |
| 482 |
*xp |= getc(stdin); |
| 483 |
*yp |= getc(stdin); |
| 484 |
} |
| 485 |
|
| 486 |
|
| 487 |
movecolor(offset) /* move our color table up or down */ |
| 488 |
int offset[3]; |
| 489 |
{ |
| 490 |
register int i, j, c; |
| 491 |
|
| 492 |
disintr(); |
| 493 |
command(SCT); |
| 494 |
byte(MINCOLOR); |
| 495 |
byte(NCOLORS); |
| 496 |
for (i = 0; i < NCOLORS; i++) |
| 497 |
for (j = 0; j < 3; j++) { |
| 498 |
c = colrtbl[j][i] + offset[j]; |
| 499 |
if (c < 0) |
| 500 |
byte(0); |
| 501 |
else if (c > 255) |
| 502 |
byte(255); |
| 503 |
else |
| 504 |
byte(c); |
| 505 |
} |
| 506 |
shortwait(20); |
| 507 |
enaintr(); |
| 508 |
} |
| 509 |
|
| 510 |
|
| 511 |
picreadcm(map) /* do gamma correction */ |
| 512 |
colormap map; |
| 513 |
{ |
| 514 |
extern double pow(); |
| 515 |
register int i, val; |
| 516 |
|
| 517 |
for (i = 0; i < 256; i++) { |
| 518 |
val = pow((i+0.5)/256.0, 1.0/GAMMA) * 256.0; |
| 519 |
map[0][i] = map[1][i] = map[2][i] = val; |
| 520 |
} |
| 521 |
} |
| 522 |
|
| 523 |
|
| 524 |
picwritecm(map) /* write out color map */ |
| 525 |
colormap map; |
| 526 |
{ |
| 527 |
register int i, j; |
| 528 |
|
| 529 |
disintr(); |
| 530 |
command(SCT); |
| 531 |
byte(MINCOLOR); |
| 532 |
byte(NCOLORS); |
| 533 |
for (i = 0; i < NCOLORS; i++) |
| 534 |
for (j = 0; j < 3; j++) |
| 535 |
byte(map[j][i]); |
| 536 |
shortwait(20); |
| 537 |
enaintr(); |
| 538 |
} |
| 539 |
|
| 540 |
|
| 541 |
longwait(t) /* longer wait */ |
| 542 |
int t; |
| 543 |
{ |
| 544 |
flush(); |
| 545 |
sleep(t); |
| 546 |
} |
| 547 |
|
| 548 |
|
| 549 |
shortwait(t) /* shorter wait */ |
| 550 |
int t; |
| 551 |
{ |
| 552 |
register long l = t*1000; |
| 553 |
|
| 554 |
flush(); |
| 555 |
while (l--) |
| 556 |
; |
| 557 |
} |
