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/* Copyright (c) 1993 Regents of the University of California */ |
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/* Copyright (c) 1995 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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#define redraw(x,y,w,h) patch_raster(wind,(x)-xoff,(y)-yoff,x,y,w,h,ourras) |
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double gamcor = 2.2; /* gamma correction */ |
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char *gamstr = NULL; /* gamma value override */ |
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|
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int dither = 1; /* dither colors? */ |
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int fast = 0; /* keep picture in Pixmap? */ |
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int yoff = 0; /* y image offset */ |
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int parent = 0; /* number of children, -1 if child */ |
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int sequential = 0; /* display images in sequence */ |
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VIEW ourview = STDVIEW; /* image view parameters */ |
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int gotview = 0; /* got parameters from file */ |
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char errmsg[128]; |
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extern BYTE clrtab[256][3]; /* global color map */ |
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BYTE clrtab[256][3]; /* global color map */ |
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extern long ftell(); |
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extern char *getenv(); |
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|
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Display *thedisplay; |
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Atom closedownAtom, wmProtocolsAtom; |
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int noop() {} |
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int sigrecv; |
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int onsig() { sigrecv++; } |
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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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extern char *getenv(); |
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char *gv; |
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int headline(); |
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int i; |
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int pid; |
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progname = argv[0]; |
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if ((gv = getenv("GAMMA")) != NULL) |
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gamcor = atof(gv); |
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for (i = 1; i < argc; i++) |
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if (argv[i][0] == '-') |
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greyscale = !greyscale; |
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break; |
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case 'm': |
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greyscale = 1; |
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maxcolors = 2; |
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break; |
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case 'd': |
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case 'f': |
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fast = !fast; |
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break; |
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case 's': |
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sequential = !sequential; |
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break; |
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case 'e': |
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if (argv[i+1][0] != '+' && argv[i+1][0] != '-') |
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goto userr; |
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if (argv[i][2] == 'e') |
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geometry = argv[++i]; |
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else |
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gamcor = atof(argv[++i]); |
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gamstr = argv[++i]; |
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break; |
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default: |
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goto userr; |
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if (i > argc) |
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goto userr; |
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while (i < argc-1) { |
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sigrecv = 0; |
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signal(SIGCONT, onsig); |
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if ((pid=fork()) == 0) { /* a child for each picture */ |
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parent = -1; |
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break; |
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if (pid < 0) |
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quiterr("fork failed"); |
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parent++; |
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signal(SIGCONT, noop); |
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pause(); /* wait for wake-up call */ |
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while (!sigrecv) |
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pause(); /* wait for wake-up call */ |
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i++; |
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} |
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if (i < argc) { /* open picture file */ |
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fname = argv[i]; |
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fin = fopen(fname, "r"); |
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if (fin == NULL) { |
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sprintf(errmsg, "cannot open file \"%s\"", fname); |
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quiterr(errmsg); |
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} |
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if (fin == NULL) |
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quiterr("cannot open picture file"); |
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} |
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/* get header */ |
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getheader(fin, headline, NULL); |
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init(argc, argv); /* get file and open window */ |
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if (parent < 0) |
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kill(getppid(), SIGCONT); /* signal parent if child */ |
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|
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for ( ; ; ) |
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getevent(); /* main loop */ |
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userr: |
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fprintf(stderr, |
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"Usage: %s [-di disp][[-ge] spec][-b][-m][-d][-f][-c nclrs][-e +/-stops] pic ..\n", |
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"Usage: %s [-di disp][[-ge] spec][-b][-m][-d][-f][-c nclrs][-e +/-stops][-g gamcor][-s] pic ..\n", |
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progname); |
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exit(1); |
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} |
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name += i+1; |
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if ((thedisplay = XOpenDisplay(dispname)) == NULL) |
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quiterr("cannot open display"); |
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/* set gamma value */ |
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if (gamstr == NULL) /* get it from the X server */ |
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gamstr = XGetDefault(thedisplay, "radiance", "gamma"); |
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if (gamstr == NULL) /* get it from the environment */ |
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gamstr = getenv("DISPLAY_GAMMA"); |
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if (gamstr != NULL) |
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gamcor = atof(gamstr); |
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/* get best visual for default screen */ |
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getbestvis(); |
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/* store image */ |
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} |
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} |
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/* open window */ |
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i = CWEventMask|CWCursor|CWBackPixel|CWBorderPixel; |
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ourwinattr.border_pixel = ourwhite; |
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ourwinattr.background_pixel = ourblack; |
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ourwinattr.colormap = XCreateColormap(thedisplay, ourroot, |
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ourvis.visual, AllocNone); |
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if (ourvis.visual != DefaultVisual(thedisplay,ourscreen)) { |
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ourwinattr.colormap = newcmap(thedisplay, ourscreen, ourvis.visual); |
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i |= CWColormap; |
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} |
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ourwinattr.event_mask = ExposureMask|KeyPressMask|ButtonPressMask| |
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ButtonReleaseMask|ButtonMotionMask|StructureNotifyMask; |
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ourwinattr.cursor = XCreateFontCursor(thedisplay, XC_diamond_cross); |
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wind = XCreateWindow(thedisplay, ourroot, xszhints.x, xszhints.y, |
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xszhints.width, xszhints.height, BORWIDTH, |
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ourvis.depth, InputOutput, ourvis.visual, CWEventMask| |
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CWCursor|CWBackPixel|CWBorderPixel|CWColormap, &ourwinattr); |
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ourvis.depth, InputOutput, ourvis.visual, |
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i, &ourwinattr); |
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if (wind == 0) |
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quiterr("cannot create window"); |
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width = xmax; |
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height = ymax; |
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xgcv.foreground = ourblack; |
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xgcv.background = ourwhite; |
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/* prepare graphics drawing context */ |
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if ((xgcv.font = XLoadFont(thedisplay, FONTNAME)) == 0) |
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quiterr("cannot get font"); |
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xgcv.foreground = ourblack; |
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xgcv.background = ourwhite; |
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ourgc = XCreateGC(thedisplay, wind, GCForeground|GCBackground| |
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GCFont, &xgcv); |
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xgcv.function = GXinvert; |
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XSetWMProtocols(thedisplay, wind, &closedownAtom, 1); |
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XMapWindow(thedisplay, wind); |
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return; |
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} /* end of init */ |
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if (es = err != NULL) |
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fprintf(stderr, "%s: %s: %s\n", progname, |
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fname==NULL?"<stdin>":fname, err); |
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if (parent > 0 & wind != 0) { |
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XDestroyWindow(thedisplay, wind); |
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XFlush(thedisplay); |
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} |
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if (thedisplay != NULL) |
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XCloseDisplay(thedisplay); |
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if (parent < 0 & sigrecv == 0) |
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kill(getppid(), SIGCONT); |
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while (parent > 0 && wait(&cs) != -1) { /* wait for any children */ |
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if (es == 0) |
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es = cs>>8 & 0xff; |
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map_rcolors(ourras, wind); |
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if (fast) |
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make_rpixmap(ourras, wind); |
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if (!sequential & parent < 0 & sigrecv == 0) { |
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kill(getppid(), SIGCONT); |
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sigrecv--; |
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} |
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break; |
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case UnmapNotify: |
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if (!fast) |
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case '@': /* adaptation level */ |
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if (avgbox(cval) == -1) |
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return(-1); |
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comp = com=='@' |
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? 106./pow(1.219+pow(luminance(cval)/exposure,.4),2.5)/exposure |
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: .5/bright(cval) ; |
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comp = bright(cval); |
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if (comp < 1e-20) { |
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XBell(thedisplay, 0); |
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return(-1); |
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} |
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if (com == '@') |
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comp = 106./exposure/ |
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pow(1.219+pow(comp*WHTEFFICACY/exposure,.4),2.5); |
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else |
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comp = .5/comp; |
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comp = log(comp)/.69315 - scale; |
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n = comp < 0 ? comp-.5 : comp+.5 ; /* round */ |
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if (n == 0) |
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colrs_gambs(scanline, xmax); |
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if (ourras->image->blue_mask & 1) |
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for (x = 0; x < xmax; x++) |
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*dp++ = scanline[x][RED] << 16 | |
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scanline[x][GRN] << 8 | |
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scanline[x][BLU] ; |
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*dp++ = (unsigned int4)scanline[x][RED] << 16 | |
958 |
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(unsigned int4)scanline[x][GRN] << 8 | |
959 |
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(unsigned int4)scanline[x][BLU] ; |
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else |
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for (x = 0; x < xmax; x++) |
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*dp++ = scanline[x][RED] | |
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scanline[x][GRN] << 8 | |
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scanline[x][BLU] << 16 ; |
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*dp++ = (unsigned int4)scanline[x][RED] | |
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(unsigned int4)scanline[x][GRN] << 8 | |
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(unsigned int4)scanline[x][BLU] << 16 ; |
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} |
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} |
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/* set gamma correction */ |
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setcolrgam(gamcor); |
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/* make histogram */ |
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new_histo(); |
1009 |
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if (new_histo((long)xmax*ymax) == -1) |
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quiterr("cannot initialize histogram"); |
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for (y = 0; y < ymax; y++) { |
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if (getscan(y) < 0) |
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break; |