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root/radiance/ray/src/px/x11image.c

Comparing ray/src/px/x11image.c (file contents):
Revision 1.2 by greg, Thu Mar 1 18:13:31 1990 UTC vs.
Revision 2.55 by gwlarson, Tue Jul 20 14:07:38 1999 UTC

#	Line 1 | Line 1
1	<	/* Copyright (c) 1990 Regents of the University of California */
1	>	/* Copyright (c) 1999 Regents of the University of California */
2
3		#ifndef lint
4	<	static char SCCSid[] = "$SunId$ LBL";
4	>	static char SCCSid[] = "$SunId$ SGI";
5		#endif
6
7		/*
#	Line 21 | Line 21 | static char SCCSid[] = "$SunId$ LBL";
21
22		#include  "standard.h"
23
24	+	#include  <signal.h>
25		#include  <X11/Xlib.h>
26		#include  <X11/cursorfont.h>
27		#include  <X11/Xutil.h>
28	+	#include  <X11/Xatom.h>
29
30	+	#undef  NOPROTO
31	+	#define NOPROTO 1
32		#include  "color.h"
33	+	#include  "tonemap.h"
34		#include  "view.h"
30	–	#include  "pic.h"
35		#include  "x11raster.h"
36		#include  "random.h"
37	+	#include  "resolu.h"
38
39		#define  FONTNAME       "8x13"          /* text font we'll use */
40
41	<	#define  CTRL(c)        ('c'-'@')
41	>	#define  CTRL(c)        ((c)-'@')
42
43		#define  BORWIDTH       5               /* border width */
44
45	+	#define  ICONSIZ        (8*10)          /* maximum icon dimension (even 8) */
46	+
47	+	#define  FIXWEIGHT      20              /* weight to add for fixation points */
48	+
49		#define  ourscreen      DefaultScreen(thedisplay)
41	–	#define  ourblack       BlackPixel(thedisplay,ourscreen)
42	–	#define  ourwhite       WhitePixel(thedisplay,ourscreen)
50		#define  ourroot        RootWindow(thedisplay,ourscreen)
44	–	#define  ourgc          DefaultGC(thedisplay,ourscreen)
51
52	+	#define  revline(x0,y0,x1,y1)   XDrawLine(thedisplay,wind,revgc,x0,y0,x1,y1)
53	+
54		#define  redraw(x,y,w,h) patch_raster(wind,(x)-xoff,(y)-yoff,x,y,w,h,ourras)
55
56		double  gamcor = 2.2;                   /* gamma correction */
57	+	char  *gamstr = NULL;                   /* gamma value override */
58
59		int  dither = 1;                        /* dither colors? */
60		int  fast = 0;                          /* keep picture in Pixmap? */
61
62	<	Window  wind = 0;                       /* our output window */
54	<	Font  fontid;                           /* our font */
62	>	char    *dispname = NULL;               /* our display name */
63
64	+	Window  wind = 0;                       /* our output window */
65	+	unsigned long  ourblack=0, ourwhite=1;  /* black and white for this visual */
66		int  maxcolors = 0;                     /* maximum colors */
67		int  greyscale = 0;                     /* in grey */
68
#	Line 61 | Line 71 | int  scale = 0;                                /* scalefactor; power of two */
71		int  xoff = 0;                          /* x image offset */
72		int  yoff = 0;                          /* y image offset */
73
74	+	int  parent = 0;                        /* number of children, -1 if child */
75	+	int  sequential = 0;                    /* display images in sequence */
76	+
77	+	char  *tout = "od";                     /* output of 't' command */
78	+	int  tinterv = 0;                       /* interval between mouse reports */
79	+
80	+	int  tmflags = TM_F_LINEAR;             /* tone mapping flags */
81	+
82		VIEW  ourview = STDVIEW;                /* image view parameters */
83		int  gotview = 0;                       /* got parameters from file */
84
85		COLR  *scanline;                        /* scan line buffer */
86	+	TMbright  *lscan;                       /* encoded luminance scanline */
87	+	BYTE  *cscan;                           /* encoded chroma scanline */
88	+	BYTE  *pscan;                           /* compute pixel scanline */
89
90	<	int  xmax, ymax;                        /* picture resolution */
90	>	RESOLU  inpres;                         /* input resolution and ordering */
91	>	int  xmax, ymax;                        /* picture dimensions */
92		int  width, height;                     /* window size */
93		char  *fname = NULL;                    /* input file name */
94	<	FILE  *fin = stdin;                     /* input file */
94	>	FILE  *fin = NULL;                      /* input file */
95		long  *scanpos = NULL;                  /* scan line positions in file */
96		int  cury = 0;                          /* current scan location */
97
98		double  exposure = 1.0;                 /* exposure compensation used */
99
100	<	XRASTER *ourras;                        /* our stored image */
100	>	int  wrongformat = 0;                   /* input in another format? */
101	>
102	>	GC      ourgc;                          /* standard graphics context */
103	>	GC      revgc;                          /* graphics context with GXinvert */
104	>
105	>	int             *ourrank;               /* our visual class ranking */
106	>	XVisualInfo     ourvis;                 /* our visual */
107	>	XRASTER         *ourras;                /* our stored image */
108		unsigned char   *ourdata;               /* our image data */
109
110		struct {
#	Line 84 | Line 113 | struct {
113
114		char  *geometry = NULL;                 /* geometry specification */
115
116	+	char  icondata[ICONSIZ*ICONSIZ/8];      /* icon bitmap data */
117	+	int  iconwidth = 0, iconheight = 0;
118	+
119		char  *progname;
120
121		char  errmsg[128];
122
123	+	BYTE  clrtab[256][3];                   /* global color map */
124	+
125		extern long  ftell();
126
127	<	extern char  *malloc(), *calloc();
127	>	extern char  *getenv();
128
95	–	extern double  atof(), pow(), log();
96	–
129		Display  *thedisplay;
130	+	Atom  closedownAtom, wmProtocolsAtom;
131
132	+	int  sigrecv;
133	+
134	+	int  onsig() { sigrecv++; }
135	+
136	+
137		main(argc, argv)
138		int  argc;
139		char  *argv[];
140		{
141		int  headline();
142		int  i;
143	+	int  pid;
144
145		progname = argv[0];
146	+	fin = stdin;
147
148		for (i = 1; i < argc; i++)
149		if (argv[i][0] == '-')
150		switch (argv[i][1]) {
151	<	case 'c':
151	>	case 'c':                       /* number of colors */
152		maxcolors = atoi(argv[++i]);
153		break;
154	<	case 'b':
154	>	case 'b':                       /* greyscale only */
155		greyscale = !greyscale;
156		break;
157	<	case 'm':
157	>	case 'm':                       /* monochrome */
158	>	greyscale = 1;
159		maxcolors = 2;
160		break;
161	<	case 'd':
162	<	dither = !dither;
161	>	case 'd':                       /* display or dither */
162	>	if (argv[i][2] == 'i')
163	>	dispname = argv[++i];
164	>	else
165	>	dither = !dither;
166		break;
167	<	case 'f':
167	>	case 'f':                       /* save pixmap */
168		fast = !fast;
169		break;
170	<	case 'e':
171	<	if (argv[i+1][0] != '+' && argv[i+1][0] != '-')
170	>	case 's':                       /* one at a time */
171	>	sequential = !sequential;
172	>	break;
173	>	case 'o':                       /* 't' output */
174	>	tout = argv[i]+2;
175	>	break;
176	>	case 't':                       /* msec interval */
177	>	tinterv = atoi(argv[++i]);
178	>	break;
179	>	case 'e':                       /* exposure comp. */
180	>	i++;
181	>	if (argv[i][0] == 'a') {
182	>	tmflags = TM_F_CAMERA;
183	>	break;
184	>	}
185	>	if (argv[i][0] == 'h') {
186	>	tmflags = TM_F_HUMAN;
187	>	break;
188	>	}
189	>	if (argv[i][0] != '+' && argv[i][0] != '-')
190		goto userr;
191	<	scale = atoi(argv[++i]);
191	>	scale = atoi(argv[i]);
192		break;
193	<	case 'g':
194	<	if (!strcmp(argv[i], "-geometry"))
193	>	case 'g':                       /* gamma comp. */
194	>	if (argv[i][2] == 'e')
195		geometry = argv[++i];
196		else
197	<	gamcor = atof(argv[++i]);
197	>	gamstr = argv[++i];
198		break;
199		default:
200		goto userr;
201		}
202	+	else if (argv[i][0] == '=')
203	+	geometry = argv[i];
204		else
205		break;
206
207	<	if (argc-i == 1) {
207	>	if (i > argc)
208	>	goto userr;
209	>	while (i < argc-1) {
210	>	sigrecv = 0;
211	>	signal(SIGCONT, onsig);
212	>	if ((pid=fork()) == 0) {        /* a child for each picture */
213	>	parent = -1;
214	>	break;
215	>	}
216	>	if (pid < 0)
217	>	quiterr("fork failed");
218	>	parent++;
219	>	while (!sigrecv)
220	>	pause();        /* wait for wake-up call */
221	>	i++;
222	>	}
223	>	if (i < argc) {                 /* open picture file */
224		fname = argv[i];
225		fin = fopen(fname, "r");
226	<	if (fin == NULL) {
227	<	sprintf(errmsg, "can't open file \"%s\"", fname);
148	<	quiterr(errmsg);
149	<	}
226	>	if (fin == NULL)
227	>	quiterr("cannot open picture file");
228		}
229		/* get header */
230	<	getheader(fin, headline);
230	>	getheader(fin, headline, NULL);
231		/* get picture dimensions */
232	<	if (fgetresolu(&xmax, &ymax, fin) != (YMAJOR|YDECR))
233	<	quiterr("bad picture size");
232	>	if (wrongformat || !fgetsresolu(&inpres, fin))
233	>	quiterr("bad picture format");
234	>	xmax = scanlen(&inpres);
235	>	ymax = numscans(&inpres);
236		/* set view parameters */
237		if (gotview && setview(&ourview) != NULL)
238		gotview = 0;
239		if ((scanline = (COLR *)malloc(xmax*sizeof(COLR))) == NULL)
240		quiterr("out of memory");
241
242	<	init();                 /* get file and open window */
242	>	init(argc, argv);                       /* get file and open window */
243
244		for ( ; ; )
245		getevent();             /* main loop */
246		userr:
247		fprintf(stderr,
248	<	"Usage: %s [-geometry spec][-b][-m][-d][-f][-c ncolors][-e +/-stops] file\n",
248	>	"Usage: %s [-di disp][[-ge] spec][-b][-m][-d][-f][-c nclrs][-e spec][-g gamcor][-s][-ospec][-t intvl] pic ..\n",
249		progname);
250	<	quit(1);
250	>	exit(1);
251		}
252
253
254	+	int
255		headline(s)             /* get relevant info from header */
256		char  *s;
257		{
258	<	static char  *altname[] = {"rview","rpict","pinterp",VIEWSTR,NULL};
178	<	register char  **an;
258	>	char  fmt[32];
259
260		if (isexpos(s))
261		exposure *= exposval(s);
262	<	else
263	<	for (an = altname; *an != NULL; an++)
264	<	if (!strncmp(*an, s, strlen(*an))) {
265	<	if (sscanview(&ourview, s+strlen(*an)) > 0)
266	<	gotview++;
187	<	return;
188	<	}
262	>	else if (formatval(fmt, s))
263	>	wrongformat = strcmp(fmt, COLRFMT);
264	>	else if (isview(s) && sscanview(&ourview, s) > 0)
265	>	gotview++;
266	>	return(0);
267		}
268
269
270	<	init()                  /* get data and open window */
270	>	init(argc, argv)                        /* get data and open window */
271	>	int argc;
272	>	char **argv;
273		{
274	<	XSizeHints  oursizhints;
275	<	register int  i;
274	>	XSetWindowAttributes    ourwinattr;
275	>	XClassHint      xclshints;
276	>	XWMHints        xwmhints;
277	>	XSizeHints      xszhints;
278	>	XTextProperty   windowName, iconName;
279	>	XGCValues       xgcv;
280	>	char    *name;
281	>	register int    i;
282
283		if (fname != NULL) {
284		scanpos = (long *)malloc(ymax*sizeof(long));
285		if (scanpos == NULL)
286	<	goto memerr;
286	>	quiterr("out of memory");
287		for (i = 0; i < ymax; i++)
288		scanpos[i] = -1;
289	<	}
290	<	if ((thedisplay = XOpenDisplay(NULL)) == NULL)
291	<	quiterr("can't open display; DISPLAY variable set?");
292	<	wind = XCreateSimpleWindow(thedisplay,
293	<	ourroot, 0, 0, xmax, ymax, BORWIDTH, ourblack, ourwhite);
294	<	if (wind == 0)
295	<	quiterr("can't create window");
296	<	if (maxcolors == 0) {           /* get number of available colors */
297	<	i = DisplayPlanes(thedisplay,ourscreen);
298	<	maxcolors = i > 8 ? 256 : 1<<i;
299	<	if (maxcolors > 4) maxcolors -= 2;
300	<	}
301	<	fontid = XLoadFont(thedisplay, FONTNAME);
302	<	if (fontid == 0)
303	<	quiterr("can't get font");
304	<	XSetFont(thedisplay, ourgc, fontid);
305	<	XStoreName(thedisplay, wind, fname == NULL ? progname : fname);
306	<	XDefineCursor(thedisplay, wind, XCreateFontCursor(thedisplay,
307	<	XC_diamond_cross));
289	>	name = fname;
290	>	} else
291	>	name = progname;
292	>	/* remove directory prefix from name */
293	>	for (i = strlen(name); i-- > 0; )
294	>	if (name[i] == '/')
295	>	break;
296	>	name += i+1;
297	>	if ((thedisplay = XOpenDisplay(dispname)) == NULL)
298	>	quiterr("cannot open display");
299	>	/* set gamma value */
300	>	if (gamstr == NULL)             /* get it from the X server */
301	>	gamstr = XGetDefault(thedisplay, "radiance", "gamma");
302	>	if (gamstr == NULL)             /* get it from the environment */
303	>	gamstr = getenv("DISPLAY_GAMMA");
304	>	if (gamstr != NULL)
305	>	gamcor = atof(gamstr);
306	>	/* get best visual for default screen */
307	>	getbestvis();
308	>	/* store image */
309	>	getras();
310	>	/* get size and position */
311	>	xszhints.flags = 0;
312	>	xszhints.width = xmax; xszhints.height = ymax;
313		if (geometry != NULL) {
314	<	bzero((char *)&oursizhints, sizeof(oursizhints));
315	<	i = XParseGeometry(geometry, &oursizhints.x, &oursizhints.y,
316	<	&oursizhints.width, &oursizhints.height);
317	<	if (i & (XValue|YValue) == (XValue|YValue)) {
318	<	oursizhints.flags |= USPosition;
314	>	i = XParseGeometry(geometry, &xszhints.x, &xszhints.y,
315	>	(unsigned *)&xszhints.width,
316	>	(unsigned *)&xszhints.height);
317	>	if ((i&(WidthValue|HeightValue)) == (WidthValue|HeightValue))
318	>	xszhints.flags |= USSize;
319	>	else
320	>	xszhints.flags |= PSize;
321	>	if ((i&(XValue|YValue)) == (XValue|YValue)) {
322	>	xszhints.flags |= USPosition;
323		if (i & XNegative)
324	<	oursizhints.x += DisplayWidth(thedisplay,ourscreen)-1;
324	>	xszhints.x += DisplayWidth(thedisplay,
325	>	ourscreen)-1-xszhints.width-2*BORWIDTH;
326		if (i & YNegative)
327	<	oursizhints.y += DisplayHeight(thedisplay,ourscreen)-1;
327	>	xszhints.y += DisplayHeight(thedisplay,
328	>	ourscreen)-1-xszhints.height-2*BORWIDTH;
329		}
233	–	if (i & (WidthValue|HeightValue) == (WidthValue|HeightValue))
234	–	oursizhints.flags |= USSize;
235	–	XSetNormalHints(thedisplay, wind, &oursizhints);
330		}
331	<	/* store image */
332	<	getras();
333	<	XSelectInput(thedisplay, wind, ButtonPressMask|ButtonReleaseMask
334	<	|ButtonMotionMask|StructureNotifyMask
335	<	|KeyPressMask|ExposureMask);
331	>	/* open window */
332	>	i = CWEventMask|CWCursor|CWBackPixel|CWBorderPixel;
333	>	ourwinattr.border_pixel = ourwhite;
334	>	ourwinattr.background_pixel = ourblack;
335	>	if (ourvis.visual != DefaultVisual(thedisplay,ourscreen)) {
336	>	ourwinattr.colormap = newcmap(thedisplay, ourscreen, ourvis.visual);
337	>	i |= CWColormap;
338	>	}
339	>	ourwinattr.event_mask = ExposureMask|KeyPressMask|ButtonPressMask|
340	>	ButtonReleaseMask|ButtonMotionMask|StructureNotifyMask;
341	>	ourwinattr.cursor = XCreateFontCursor(thedisplay, XC_diamond_cross);
342	>	wind = XCreateWindow(thedisplay, ourroot, xszhints.x, xszhints.y,
343	>	xszhints.width, xszhints.height, BORWIDTH,
344	>	ourvis.depth, InputOutput, ourvis.visual,
345	>	i, &ourwinattr);
346	>	if (wind == 0)
347	>	quiterr("cannot create window");
348	>	width = xmax;
349	>	height = ymax;
350	>	/* prepare graphics drawing context */
351	>	if ((xgcv.font = XLoadFont(thedisplay, FONTNAME)) == 0)
352	>	quiterr("cannot get font");
353	>	xgcv.foreground = ourblack;
354	>	xgcv.background = ourwhite;
355	>	ourgc = XCreateGC(thedisplay, wind, GCForeground|GCBackground|
356	>	GCFont, &xgcv);
357	>	xgcv.function = GXinvert;
358	>	revgc = XCreateGC(thedisplay, wind, GCForeground|GCBackground|
359	>	GCFunction, &xgcv);
360	>
361	>	/* set up the window manager */
362	>	xwmhints.flags = InputHint|IconPixmapHint;
363	>	xwmhints.input = True;
364	>	xwmhints.icon_pixmap = XCreateBitmapFromData(thedisplay,
365	>	wind, icondata, iconwidth, iconheight);
366	>
367	>	windowName.encoding = iconName.encoding = XA_STRING;
368	>	windowName.format = iconName.format = 8;
369	>	windowName.value = (u_char *)name;
370	>	windowName.nitems = strlen(windowName.value);
371	>	iconName.value = (u_char *)name;
372	>	iconName.nitems = strlen(windowName.value);
373	>
374	>	xclshints.res_name = NULL;
375	>	xclshints.res_class = "Ximage";
376	>	XSetWMProperties(thedisplay, wind, &windowName, &iconName,
377	>	argv, argc, &xszhints, &xwmhints, &xclshints);
378	>	closedownAtom = XInternAtom(thedisplay, "WM_DELETE_WINDOW", False);
379	>	wmProtocolsAtom = XInternAtom(thedisplay, "WM_PROTOCOLS", False);
380	>	XSetWMProtocols(thedisplay, wind, &closedownAtom, 1);
381	>
382		XMapWindow(thedisplay, wind);
243	–	return;
244	–	memerr:
245	–	quiterr("out of memory");
383		} /* end of init */
384
385
386		quiterr(err)            /* print message and exit */
387		char  *err;
388		{
389	<	if (err != NULL) {
390	<	fprintf(stderr, "%s: %s\n", progname, err);
391	<	exit(1);
389	>	register int  es;
390	>	int  cs;
391	>
392	>	if (es = err != NULL)
393	>	fprintf(stderr, "%s: %s: %s\n", progname,
394	>	fname==NULL?"<stdin>":fname, err);
395	>	if (thedisplay != NULL)
396	>	XCloseDisplay(thedisplay);
397	>	if (parent < 0 & sigrecv == 0)
398	>	kill(getppid(), SIGCONT);
399	>	while (parent > 0 && wait(&cs) != -1) { /* wait for any children */
400	>	if (es == 0)
401	>	es = cs>>8 & 0xff;
402	>	parent--;
403		}
404	<	exit(0);
404	>	exit(es);
405		}
406
407
408	<	eputs(s)
409	<	char    *s;
408	>	static int
409	>	viscmp(v1,v2)           /* compare visual to see which is better, descending */
410	>	register XVisualInfo    *v1, *v2;
411		{
412	<	fputs(s, stderr);
412	>	int     bad1 = 0, bad2 = 0;
413	>	register int  *rp;
414	>
415	>	if (v1->class == v2->class) {
416	>	if (v1->class == TrueColor || v1->class == DirectColor) {
417	>	/* prefer 24-bit to 32-bit */
418	>	if (v1->depth == 24 && v2->depth == 32)
419	>	return(-1);
420	>	if (v1->depth == 32 && v2->depth == 24)
421	>	return(1);
422	>	/* go for maximum depth otherwise */
423	>	return(v2->depth - v1->depth);
424	>	}
425	>	/* don't be too greedy */
426	>	if (maxcolors <= 1<<v1->depth && maxcolors <= 1<<v2->depth)
427	>	return(v1->depth - v2->depth);
428	>	return(v2->depth - v1->depth);
429	>	}
430	>	/* prefer Pseudo when < 15-bit */
431	>	if ((v1->class == TrueColor || v1->class == DirectColor) &&
432	>	v1->depth < 15)
433	>	bad1 = 1;
434	>	if ((v2->class == TrueColor || v2->class == DirectColor) &&
435	>	v2->depth < 15)
436	>	bad2 = -1;
437	>	if (bad1 | bad2)
438	>	return(bad1+bad2);
439	>	/* otherwise, use class ranking */
440	>	for (rp = ourrank; *rp != -1; rp++) {
441	>	if (v1->class == *rp)
442	>	return(-1);
443	>	if (v2->class == *rp)
444	>	return(1);
445	>	}
446	>	return(0);
447		}
448
449
450	<	quit(code)
268	<	int  code;
450	>	getbestvis()                    /* get the best visual for this screen */
451		{
452	<	exit(code);
452	>	#ifdef DEBUG
453	>	static char  vistype[][12] = {
454	>	"StaticGray",
455	>	"GrayScale",
456	>	"StaticColor",
457	>	"PseudoColor",
458	>	"TrueColor",
459	>	"DirectColor"
460	>	};
461	>	#endif
462	>	static int      rankings[3][6] = {
463	>	{TrueColor,DirectColor,PseudoColor,GrayScale,StaticGray,-1},
464	>	{PseudoColor,GrayScale,StaticGray,-1},
465	>	{PseudoColor,GrayScale,StaticGray,-1}
466	>	};
467	>	XVisualInfo     *xvi;
468	>	int     vismatched;
469	>	register int    i, j;
470	>
471	>	if (greyscale) {
472	>	ourrank = rankings[2];
473	>	if (maxcolors < 2) maxcolors = 256;
474	>	} else if (maxcolors >= 2 && maxcolors <= 256)
475	>	ourrank = rankings[1];
476	>	else {
477	>	ourrank = rankings[0];
478	>	maxcolors = 256;
479	>	}
480	>	/* find best visual */
481	>	ourvis.screen = ourscreen;
482	>	xvi = XGetVisualInfo(thedisplay,VisualScreenMask,&ourvis,&vismatched);
483	>	if (xvi == NULL)
484	>	quiterr("no visuals for this screen!");
485	>	#ifdef DEBUG
486	>	fprintf(stderr, "Supported visuals:\n");
487	>	for (i = 0; i < vismatched; i++)
488	>	fprintf(stderr, "\ttype %s, depth %d\n",
489	>	vistype[xvi[i].class], xvi[i].depth);
490	>	#endif
491	>	for (i = 0, j = 1; j < vismatched; j++)
492	>	if (viscmp(&xvi[i],&xvi[j]) > 0)
493	>	i = j;
494	>	/* compare to least acceptable */
495	>	for (j = 0; ourrank[j++] != -1; )
496	>	;
497	>	ourvis.class = ourrank[--j];
498	>	ourvis.depth = 1;
499	>	if (viscmp(&xvi[i],&ourvis) > 0)
500	>	quiterr("inadequate visuals on this screen");
501	>	/* OK, we'll use it */
502	>	copystruct(&ourvis, &xvi[i]);
503	>	#ifdef DEBUG
504	>	fprintf(stderr, "Selected visual type %s, depth %d\n",
505	>	vistype[ourvis.class], ourvis.depth);
506	>	#endif
507	>	/* make appropriate adjustments */
508	>	if (ourvis.class == GrayScale || ourvis.class == StaticGray)
509	>	greyscale = 1;
510	>	if (ourvis.depth <= 8 && ourvis.colormap_size < maxcolors)
511	>	maxcolors = ourvis.colormap_size;
512	>	if (ourvis.class == StaticGray) {
513	>	ourblack = 0;
514	>	ourwhite = 255;
515	>	} else if (ourvis.class == PseudoColor) {
516	>	ourblack = BlackPixel(thedisplay,ourscreen);
517	>	ourwhite = WhitePixel(thedisplay,ourscreen);
518	>	if ((ourblack|ourwhite) & ~255L) {
519	>	ourblack = 0;
520	>	ourwhite = 1;
521	>	}
522	>	if (maxcolors > 4)
523	>	maxcolors -= 2;
524	>	} else {
525	>	ourblack = 0;
526	>	ourwhite = ourvis.red_mask|ourvis.green_mask|ourvis.blue_mask;
527	>	}
528	>	XFree((char *)xvi);
529		}
530
531
532		getras()                                /* get raster file */
533		{
276	–	colormap        ourmap;
277	–	unsigned char   rmap[256], gmap[256], bmap[256];
534		XVisualInfo     vinfo;
279	–	register int  i;
535
536		if (maxcolors <= 2) {           /* monochrome */
537		ourdata = (unsigned char *)malloc(ymax*((xmax+7)/8));
538		if (ourdata == NULL)
539		goto fail;
540	<	ourras = make_raster(thedisplay, ourscreen, 1, ourdata,
540	>	ourras = make_raster(thedisplay, &ourvis, 1, ourdata,
541		xmax, ymax, 8);
542		if (ourras == NULL)
543		goto fail;
544		getmono();
545	<	} else if (XMatchVisualInfo(thedisplay,ourscreen,24,TrueColor,&vinfo)) {
546	<	ourdata = (unsigned char *)malloc(xmax*ymax*3);
545	>	} else if (ourvis.class == TrueColor | ourvis.class == DirectColor) {
546	>	int  datsiz = ourvis.depth>16 ? sizeof(int4) : sizeof(int2);
547	>	ourdata = (unsigned char *)malloc(datsiz*xmax*ymax);
548		if (ourdata == NULL)
549		goto fail;
550	<	ourras = make_raster(thedisplay, ourscreen, 24, ourdata,
551	<	xmax, ymax, 8);
550	>	ourras = make_raster(thedisplay, &ourvis, datsiz*8,
551	>	ourdata, xmax, ymax, datsiz*8);
552		if (ourras == NULL)
553		goto fail;
554		getfull();
#	Line 300 | Line 556 | getras()                               /* get raster file */
556		ourdata = (unsigned char *)malloc(xmax*ymax);
557		if (ourdata == NULL)
558		goto fail;
559	<	ourras = make_raster(thedisplay, ourscreen, 8, ourdata,
559	>	ourras = make_raster(thedisplay, &ourvis, 8, ourdata,
560		xmax, ymax, 8);
561		if (ourras == NULL)
562		goto fail;
563		if (greyscale)
564	<	biq(dither,maxcolors,1,ourmap);
564	>	getgrey();
565		else
566	<	ciq(dither,maxcolors,1,ourmap);
567	<	for (i = 0; i < 256; i++) {
312	<	rmap[i] = ourmap[0][i];
313	<	gmap[i] = ourmap[1][i];
314	<	bmap[i] = ourmap[2][i];
315	<	}
316	<	if (init_rcolors(ourras, rmap, gmap, bmap) == 0)
566	>	getmapped();
567	>	if (ourvis.class != StaticGray && !init_rcolors(ourras,clrtab))
568		goto fail;
569		}
570		return;
571		fail:
572	<	quit("could not create raster image");
572	>	quiterr("could not create raster image");
573		}
574
575
576		getevent()                              /* process the next event */
577		{
578	<	union {
328	<	XEvent  u;
329	<	XConfigureEvent  c;
330	<	XExposeEvent  e;
331	<	XButtonPressedEvent  b;
332	<	XKeyPressedEvent  k;
333	<	} e;
578	>	XEvent xev;
579
580	<	XNextEvent(thedisplay, &e.u);
581	<	switch (e.u.type) {
580	>	XNextEvent(thedisplay, &xev);
581	>	switch ((int)xev.type) {
582		case KeyPress:
583	<	docom(&e.k);
583	>	docom(&xev.xkey);
584		break;
585		case ConfigureNotify:
586	<	width = e.c.width;
587	<	height = e.c.height;
586	>	width = xev.xconfigure.width;
587	>	height = xev.xconfigure.height;
588		break;
589		case MapNotify:
590		map_rcolors(ourras, wind);
591		if (fast)
592	<	make_rpixmap(ourras);
592	>	make_rpixmap(ourras, wind);
593	>	if (!sequential & parent < 0 & sigrecv == 0) {
594	>	kill(getppid(), SIGCONT);
595	>	sigrecv--;
596	>	}
597		break;
598		case UnmapNotify:
599	<	unmap_rcolors(ourras);
599	>	if (!fast)
600	>	unmap_rcolors(ourras);
601		break;
602		case Expose:
603	<	redraw(e.e.x, e.e.y, e.e.width, e.e.height);
603	>	redraw(xev.xexpose.x, xev.xexpose.y,
604	>	xev.xexpose.width, xev.xexpose.height);
605		break;
606		case ButtonPress:
607	<	if (e.b.state & (ShiftMask|ControlMask))
608	<	moveimage(&e.b);
607	>	if (xev.xbutton.state & (ShiftMask|ControlMask))
608	>	moveimage(&xev.xbutton);
609		else
610	<	getbox(&e.b);
610	>	switch (xev.xbutton.button) {
611	>	case Button1:
612	>	getbox(&xev.xbutton);
613	>	break;
614	>	case Button2:
615	>	traceray(xev.xbutton.x, xev.xbutton.y);
616	>	break;
617	>	case Button3:
618	>	trackrays(&xev.xbutton);
619	>	break;
620	>	}
621		break;
622	+	case ClientMessage:
623	+	if ((xev.xclient.message_type == wmProtocolsAtom) &&
624	+	(xev.xclient.data.l[0] == closedownAtom))
625	+	quiterr(NULL);
626	+	break;
627		}
628		}
629
630
631	<	docom(ekey)                                     /* execute command */
631	>	traceray(xpos, ypos)                    /* print requested pixel data */
632	>	int  xpos, ypos;
633	>	{
634	>	extern char  *index();
635	>	FLOAT  hv[2];
636	>	FVECT  rorg, rdir;
637	>	COLOR  cval;
638	>	register char  *cp;
639	>
640	>	box.xmin = xpos; box.xsiz = 1;
641	>	box.ymin = ypos; box.ysiz = 1;
642	>	avgbox(cval);
643	>	scalecolor(cval, 1./exposure);
644	>	pix2loc(hv, &inpres, xpos-xoff, ypos-yoff);
645	>	if (!gotview || viewray(rorg, rdir, &ourview, hv[0], hv[1]) < 0)
646	>	rorg[0] = rorg[1] = rorg[2] =
647	>	rdir[0] = rdir[1] = rdir[2] = 0.;
648	>
649	>	for (cp = tout; *cp; cp++)      /* print what they asked for */
650	>	switch (*cp) {
651	>	case 'o':                       /* origin */
652	>	printf("%e %e %e ", rorg[0], rorg[1], rorg[2]);
653	>	break;
654	>	case 'd':                       /* direction */
655	>	printf("%e %e %e ", rdir[0], rdir[1], rdir[2]);
656	>	break;
657	>	case 'v':                       /* radiance value */
658	>	printf("%e %e %e ", colval(cval,RED),
659	>	colval(cval,GRN), colval(cval,BLU));
660	>	break;
661	>	case 'l':                       /* luminance */
662	>	printf("%e ", luminance(cval));
663	>	break;
664	>	case 'p':                       /* pixel position */
665	>	printf("%d %d ", (int)(hv[0]*inpres.xr),
666	>	(int)(hv[1]*inpres.yr));
667	>	break;
668	>	}
669	>	putchar('\n');
670	>	fflush(stdout);
671	>	return(0);
672	>	}
673	>
674	>
675	>	docom(ekey)                             /* execute command */
676		XKeyPressedEvent  *ekey;
677		{
678		char  buf[80];
#	Line 370 | Line 680 | XKeyPressedEvent  *ekey;
680		XColor  cvx;
681		int  com, n;
682		double  comp;
683	<	FVECT  rorg, rdir;
683	>	FLOAT  hv[2];
684
685		n = XLookupString(ekey, buf, sizeof(buf), NULL, NULL);
686		if (n == 0)
#	Line 378 | Line 688 | XKeyPressedEvent  *ekey;
688		com = buf[0];
689		switch (com) {                  /* interpret command */
690		case 'q':
691	<	case CTRL(D):                           /* quit */
692	<	quit(0);
691	>	case 'Q':
692	>	case CTRL('D'):                         /* quit */
693	>	quiterr(NULL);
694		case '\n':
695		case '\r':
696		case 'l':
697		case 'c':                               /* value */
698	<	if (avgbox(cval) == -1)
698	>	if (!avgbox(cval))
699		return(-1);
700		switch (com) {
701		case '\n':
#	Line 392 | Line 703 | XKeyPressedEvent  *ekey;
703		sprintf(buf, "%.3f", intens(cval)/exposure);
704		break;
705		case 'l':                               /* luminance */
706	<	sprintf(buf, "%.0fn", bright(cval)*683.0/exposure);
706	>	sprintf(buf, "%.0fL", luminance(cval)/exposure);
707		break;
708		case 'c':                               /* color */
709		comp = pow(2.0, (double)scale);
#	Line 402 | Line 713 | XKeyPressedEvent  *ekey;
713		colval(cval,BLU)*comp);
714		break;
715		}
716	<	XDrawImageString(thedisplay, wind, ourgc, box.xmin, box.ymin,
717	<	buf, strlen(buf));
716	>	XDrawImageString(thedisplay, wind, ourgc,
717	>	box.xmin, box.ymin+box.ysiz, buf, strlen(buf));
718		return(0);
719		case 'i':                               /* identify (contour) */
720		if (ourras->pixels == NULL)
#	Line 418 | Line 729 | XKeyPressedEvent  *ekey;
729		XStoreColor(thedisplay, ourras->cmap, &cvx);
730		return(0);
731		case 'p':                               /* position */
732	<	sprintf(buf, "(%d,%d)", ekey->x-xoff, ymax-1-ekey->y+yoff);
732	>	pix2loc(hv, &inpres, ekey->x-xoff, ekey->y-yoff);
733	>	sprintf(buf, "(%d,%d)", (int)(hv[0]*inpres.xr),
734	>	(int)(hv[1]*inpres.yr));
735		XDrawImageString(thedisplay, wind, ourgc, ekey->x, ekey->y,
736		buf, strlen(buf));
737		return(0);
738		case 't':                               /* trace */
739	<	if (!gotview) {
740	<	XBell(thedisplay, 0);
739	>	return(traceray(ekey->x, ekey->y));
740	>	case 'a':                               /* auto exposure */
741	>	if (fname == NULL)
742		return(-1);
743	<	}
744	<	viewray(rorg, rdir, &ourview,
745	<	(ekey->x-xoff+.5)/xmax,
746	<	(ymax-1-ekey->y+yoff+.5)/ymax);
747	<	printf("%e %e %e ", rorg[0], rorg[1], rorg[2]);
748	<	printf("%e %e %e\n", rdir[0], rdir[1], rdir[2]);
749	<	fflush(stdout);
750	<	return(0);
743	>	tmflags = TM_F_CAMERA;
744	>	strcpy(buf, "auto exposure...");
745	>	goto remap;
746	>	case 'h':                               /* human response */
747	>	if (fname == NULL)
748	>	return(-1);
749	>	tmflags = TM_F_HUMAN;
750	>	strcpy(buf, "human exposure...");
751	>	goto remap;
752		case '=':                               /* adjust exposure */
753	<	if (avgbox(cval) == -1)
753	>	case '@':                               /* adaptation level */
754	>	if (!avgbox(cval))
755		return(-1);
756	<	n = log(.5/bright(cval))/.69315 - scale;        /* truncate */
757	<	if (n == 0)
758	<	return(0);
759	<	scale_rcolors(ourras, pow(2.0, (double)n));
756	>	comp = bright(cval);
757	>	if (comp < 1e-20) {
758	>	XBell(thedisplay, 0);
759	>	return(-1);
760	>	}
761	>	if (com == '@')
762	>	comp = 106./exposure/
763	>	pow(1.219+pow(comp*WHTEFFICACY/exposure,.4),2.5);
764	>	else
765	>	comp = .5/comp;
766	>	comp = log(comp)/.69315 - scale;
767	>	n = comp < 0 ? comp-.5 : comp+.5 ;      /* round */
768	>	if (tmflags != TM_F_LINEAR)
769	>	tmflags = TM_F_LINEAR;  /* turn off tone mapping */
770	>	else {
771	>	if (n == 0)             /* else check if any change */
772	>	return(0);
773	>	scale_rcolors(ourras, pow(2.0, (double)n));
774	>	}
775		scale += n;
776		sprintf(buf, "%+d", scale);
777	<	XDrawImageString(thedisplay, wind, ourgc, box.xmin, box.ymin,
778	<	buf, strlen(buf));
777	>	remap:
778	>	XDrawImageString(thedisplay, wind, ourgc,
779	>	box.xmin, box.ymin+box.ysiz, buf, strlen(buf));
780		XFlush(thedisplay);
781		free(ourdata);
782		free_raster(ourras);
783		getras();
784		/* fall through */
785	<	case CTRL(R):                           /* redraw */
786	<	case CTRL(L):
785	>	case CTRL('R'):                         /* redraw */
786	>	case CTRL('L'):
787		unmap_rcolors(ourras);
788		XClearWindow(thedisplay, wind);
789		map_rcolors(ourras, wind);
790		if (fast)
791	<	make_rpixmap(ourras);
791	>	make_rpixmap(ourras, wind);
792		redraw(0, 0, width, height);
793		return(0);
794	+	case 'f':                               /* turn on fast redraw */
795	+	fast = 1;
796	+	make_rpixmap(ourras, wind);
797	+	return(0);
798	+	case 'F':                               /* turn off fast redraw */
799	+	fast = 0;
800	+	free_rpixmap(ourras);
801	+	return(0);
802	+	case '0':                               /* recenter origin */
803	+	if (xoff == 0 & yoff == 0)
804	+	return(0);
805	+	xoff = yoff = 0;
806	+	XClearWindow(thedisplay, wind);
807	+	redraw(0, 0, width, height);
808	+	return(0);
809		case ' ':                               /* clear */
810		redraw(box.xmin, box.ymin, box.xsiz, box.ysiz);
811		return(0);
#	Line 472 | Line 819 | XKeyPressedEvent  *ekey;
819		moveimage(ebut)                         /* shift the image */
820		XButtonPressedEvent  *ebut;
821		{
822	<	union {
823	<	XEvent  u;
477	<	XButtonReleasedEvent    b;
478	<	} e;
822	>	XEvent  e;
823	>	int     mxo, myo;
824
825	<	XMaskEvent(thedisplay, ButtonReleaseMask, &e.u);
826	<	xoff += e.b.x - ebut->x;
827	<	yoff += e.b.y - ebut->y;
825	>	XMaskEvent(thedisplay, ButtonReleaseMask|ButtonMotionMask, &e);
826	>	while (e.type == MotionNotify) {
827	>	mxo = e.xmotion.x;
828	>	myo = e.xmotion.y;
829	>	revline(ebut->x, ebut->y, mxo, myo);
830	>	revbox(xoff+mxo-ebut->x, yoff+myo-ebut->y,
831	>	xoff+mxo-ebut->x+xmax, yoff+myo-ebut->y+ymax);
832	>	XMaskEvent(thedisplay,ButtonReleaseMask|ButtonMotionMask,&e);
833	>	revline(ebut->x, ebut->y, mxo, myo);
834	>	revbox(xoff+mxo-ebut->x, yoff+myo-ebut->y,
835	>	xoff+mxo-ebut->x+xmax, yoff+myo-ebut->y+ymax);
836	>	}
837	>	xoff += e.xbutton.x - ebut->x;
838	>	yoff += e.xbutton.y - ebut->y;
839		XClearWindow(thedisplay, wind);
840		redraw(0, 0, width, height);
841		}
#	Line 488 | Line 844 | XButtonPressedEvent  *ebut;
844		getbox(ebut)                            /* get new box */
845		XButtonPressedEvent  *ebut;
846		{
847	<	union {
492	<	XEvent  u;
493	<	XButtonReleasedEvent  b;
494	<	XPointerMovedEvent  m;
495	<	}  e;
847	>	XEvent  e;
848
849	<	XMaskEvent(thedisplay, ButtonReleaseMask|ButtonMotionMask, &e.u);
850	<	while (e.u.type == MotionNotify) {
851	<	revbox(ebut->x, ebut->y, box.xmin = e.m.x, box.ymin = e.m.y);
852	<	XMaskEvent(thedisplay,ButtonReleaseMask|ButtonMotionMask,&e.u);
849	>	XMaskEvent(thedisplay, ButtonReleaseMask|ButtonMotionMask, &e);
850	>	while (e.type == MotionNotify) {
851	>	revbox(ebut->x, ebut->y, box.xmin = e.xmotion.x, box.ymin = e.xmotion.y);
852	>	XMaskEvent(thedisplay,ButtonReleaseMask|ButtonMotionMask,&e);
853		revbox(ebut->x, ebut->y, box.xmin, box.ymin);
854		}
855	<	box.xmin = e.b.x<0 ? 0 : (e.b.x>=width ? width-1 : e.b.x);
856	<	box.ymin = e.b.y<0 ? 0 : (e.b.y>=height ? height-1 : e.b.y);
855	>	box.xmin = e.xbutton.x<0 ? 0 : (e.xbutton.x>=width ? width-1 : e.xbutton.x);
856	>	box.ymin = e.xbutton.y<0 ? 0 : (e.xbutton.y>=height ? height-1 : e.xbutton.y);
857		if (box.xmin > ebut->x) {
858		box.xsiz = box.xmin - ebut->x + 1;
859		box.xmin = ebut->x;
#	Line 517 | Line 869 | XButtonPressedEvent  *ebut;
869		}
870
871
872	+	trackrays(ebut)                         /* trace rays as mouse moves */
873	+	XButtonPressedEvent  *ebut;
874	+	{
875	+	XEvent  e;
876	+	unsigned long   lastrept;
877	+
878	+	traceray(ebut->x, ebut->y);
879	+	lastrept = ebut->time;
880	+	XMaskEvent(thedisplay, ButtonReleaseMask|ButtonMotionMask, &e);
881	+	while (e.type == MotionNotify) {
882	+	if (e.xmotion.time >= lastrept + tinterv) {
883	+	traceray(e.xmotion.x, e.xmotion.y);
884	+	lastrept = e.xmotion.time;
885	+	}
886	+	XMaskEvent(thedisplay,ButtonReleaseMask|ButtonMotionMask,&e);
887	+	}
888	+	}
889	+
890	+
891		revbox(x0, y0, x1, y1)                  /* draw box with reversed lines */
892		int  x0, y0, x1, y1;
893		{
894	<	static GC       mygc = 0;
894	>	revline(x0, y0, x1, y0);
895	>	revline(x0, y1, x1, y1);
896	>	revline(x0, y0, x0, y1);
897	>	revline(x1, y0, x1, y1);
898	>	}
899
900	<	if (mygc == 0) {
901	<	mygc = XCreateGC(thedisplay, wind, 0, 0);
902	<	XSetFunction(thedisplay, mygc, GXinvert);
900	>
901	>	int
902	>	colavg(scn, n, cavg)
903	>	register COLR   *scn;
904	>	register int    n;
905	>	COLOR   cavg;
906	>	{
907	>	COLOR   col;
908	>
909	>	while (n--) {
910	>	colr_color(col, scn++);
911	>	addcolor(cavg, col);
912		}
913	<	XDrawLine(thedisplay, wind, mygc, x0, y0, x1, y0);
530	<	XDrawLine(thedisplay, wind, mygc, x0, y1, x1, y1);
531	<	XDrawLine(thedisplay, wind, mygc, x0, y0, x0, y1);
532	<	XDrawLine(thedisplay, wind, mygc, x1, y0, x1, y1);
533	<	} /* end of revbox */
913	>	}
914
915
916	<	avgbox(clr)                             /* average color over current box */
917	<	COLOR  clr;
916	>	int
917	>	avgbox(cavg)                            /* average color over current box */
918	>	COLOR   cavg;
919		{
920	+	double  d;
921	+	register int    rval;
922	+
923	+	setcolor(cavg, 0., 0., 0.);
924	+	rval = dobox(colavg, (char *)cavg);
925	+	if (rval > 0) {
926	+	d = 1./rval;
927	+	scalecolor(cavg, d);
928	+	}
929	+	return(rval);
930	+	}
931	+
932	+
933	+	int
934	+	dobox(f, p)                             /* run function over box */
935	+	int     (*f)();                 /* function to call for each subscan */
936	+	char    *p;                     /* pointer to private data */
937	+	{
938		int  left, right, top, bottom;
939		int  y;
541	–	double  d;
542	–	COLOR  ctmp;
543	–	register int  x;
940
545	–	setcolor(clr, 0.0, 0.0, 0.0);
941		left = box.xmin - xoff;
942		right = left + box.xsiz;
943		if (left < 0)
#	Line 550 | Line 945 | COLOR  clr;
945		if (right > xmax)
946		right = xmax;
947		if (left >= right)
948	<	return(-1);
948	>	return(0);
949		top = box.ymin - yoff;
950		bottom = top + box.ysiz;
951		if (top < 0)
#	Line 558 | Line 953 | COLOR  clr;
953		if (bottom > ymax)
954		bottom = ymax;
955		if (top >= bottom)
956	<	return(-1);
956	>	return(0);
957		for (y = top; y < bottom; y++) {
958		if (getscan(y) == -1)
959		return(-1);
960	<	for (x = left; x < right; x++) {
961	<	colr_color(ctmp, scanline[x]);
962	<	addcolor(clr, ctmp);
960	>	(*f)(scanline+left, right-left, p);
961	>	}
962	>	return((right-left)*(bottom-top));
963	>	}
964	>
965	>
966	>	int
967	>	addfix(scn, n)                  /* add fixation points to histogram */
968	>	COLR    *scn;
969	>	int     n;
970	>	{
971	>	if (tmCvColrs(lscan, TM_NOCHROM, scn, n))
972	>	goto tmerr;
973	>	if (tmAddHisto(lscan, n, FIXWEIGHT))
974	>	goto tmerr;
975	>	return;
976	>	tmerr:
977	>	quiterr("tone mapping error");
978	>	}
979	>
980	>
981	>	make_tonemap()                  /* initialize tone mapping */
982	>	{
983	>	int  flags, y;
984	>
985	>	if (tmflags != TM_F_LINEAR && fname == NULL) {
986	>	fprintf(stderr, "%s: cannot adjust tone of standard input\n",
987	>	progname);
988	>	tmflags = TM_F_LINEAR;
989	>	}
990	>	if (tmflags == TM_F_LINEAR) {   /* linear with clamping */
991	>	setcolrcor(pow, 1.0/gamcor);
992	>	return;
993	>	}
994	>	flags = tmflags;                /* histogram adjustment */
995	>	if (greyscale) flags |= TM_F_BW;
996	>	if (tmTop != NULL) {            /* reuse old histogram if one */
997	>	tmDone(tmTop);
998	>	tmTop->flags = flags;
999	>	} else {                        /* else initialize */
1000	>	if ((lscan = (TMbright *)malloc(xmax*sizeof(TMbright))) == NULL)
1001	>	goto memerr;
1002	>	if (greyscale) {
1003	>	cscan = TM_NOCHROM;
1004	>	if ((pscan = (BYTE *)malloc(sizeof(BYTE)*xmax)) == NULL)
1005	>	goto memerr;
1006	>	} else if ((pscan=cscan = (BYTE *)malloc(3*sizeof(BYTE)*xmax))
1007	>	== NULL)
1008	>	goto memerr;
1009	>	/* initialize tm library */
1010	>	if (tmInit(flags, stdprims, gamcor) == NULL)
1011	>	goto memerr;
1012	>	if (tmSetSpace(stdprims, WHTEFFICACY/exposure))
1013	>	goto tmerr;
1014	>	/* compute picture histogram */
1015	>	for (y = 0; y < ymax; y++) {
1016	>	getscan(y);
1017	>	if (tmCvColrs(lscan, TM_NOCHROM, scanline, xmax))
1018	>	goto tmerr;
1019	>	if (tmAddHisto(lscan, xmax, 1))
1020	>	goto tmerr;
1021		}
1022		}
1023	<	d = 1.0/((right-left)*(bottom-top));
1024	<	scalecolor(clr, d);
1025	<	return(0);
1023	>	tmDup();                        /* add fixations to duplicate map */
1024	>	dobox(addfix, NULL);
1025	>	/* (re)compute tone mapping */
1026	>	if (tmComputeMapping(gamcor, 0., 0.))
1027	>	goto tmerr;
1028	>	return;
1029	>	memerr:
1030	>	quiterr("out of memory in make_tonemap");
1031	>	tmerr:
1032	>	quiterr("tone mapping error");
1033		}
1034
1035
1036	+	tmap_colrs(scn, len)            /* apply tone mapping to scanline */
1037	+	register COLR  *scn;
1038	+	int  len;
1039	+	{
1040	+	register BYTE  *ps;
1041	+
1042	+	if (tmflags == TM_F_LINEAR) {
1043	+	if (scale)
1044	+	shiftcolrs(scn, len, scale);
1045	+	colrs_gambs(scn, len);
1046	+	return;
1047	+	}
1048	+	if (len > xmax)
1049	+	quiterr("code error 1 in tmap_colrs");
1050	+	if (tmCvColrs(lscan, cscan, scn, len))
1051	+	goto tmerr;
1052	+	if (tmMapPixels(pscan, lscan, cscan, len))
1053	+	goto tmerr;
1054	+	ps = pscan;
1055	+	if (greyscale)
1056	+	while (len--) {
1057	+	scn[0][RED] = scn[0][GRN] = scn[0][BLU] = *ps++;
1058	+	scn[0][EXP] = COLXS;
1059	+	scn++;
1060	+	}
1061	+	else
1062	+	while (len--) {
1063	+	scn[0][RED] = *ps++;
1064	+	scn[0][GRN] = *ps++;
1065	+	scn[0][BLU] = *ps++;
1066	+	scn[0][EXP] = COLXS;
1067	+	scn++;
1068	+	}
1069	+	return;
1070	+	tmerr:
1071	+	quiterr("tone mapping error");
1072	+	}
1073	+
1074	+
1075		getmono()                       /* get monochrome data */
1076		{
1077		register unsigned char  *dp;
1078		register int    x, err;
1079	<	int     y;
581	<	rgbpixel        *inline;
1079	>	int     y, errp;
1080		short   *cerr;
1081
1082	<	if ((inline = (rgbpixel *)malloc(xmax*sizeof(rgbpixel))) == NULL
1083	<	|| (cerr = (short *)calloc(xmax,sizeof(short))) == NULL)
586	<	quit("out of memory in getmono");
1082	>	if ((cerr = (short *)calloc(xmax,sizeof(short))) == NULL)
1083	>	quiterr("out of memory in getmono");
1084		dp = ourdata - 1;
1085		for (y = 0; y < ymax; y++) {
1086	<	picreadline3(y, inline);
1086	>	getscan(y);
1087	>	add2icon(y, scanline);
1088	>	normcolrs(scanline, xmax, scale);
1089		err = 0;
1090		for (x = 0; x < xmax; x++) {
1091		if (!(x&7))
1092		*++dp = 0;
1093	<	err += rgb_bright(&inline[x]) + cerr[x];
1093	>	errp = err;
1094	>	err += normbright(scanline[x]) + cerr[x];
1095		if (err > 127)
1096		err -= 255;
1097		else
1098	<	*dp |= 1<<(x&07);
1099	<	cerr[x] = err >>= 1;
1098	>	*dp |= 1<<(7-(x&07));
1099	>	err /= 3;
1100	>	cerr[x] = err + errp;
1101		}
1102		}
602	–	free((char *)inline);
1103		free((char *)cerr);
1104		}
1105
1106
1107	+	add2icon(y, scan)               /* add a scanline to our icon data */
1108	+	int  y;
1109	+	COLR  *scan;
1110	+	{
1111	+	static short  cerr[ICONSIZ];
1112	+	static int  ynext;
1113	+	static char  *dp;
1114	+	COLR  clr;
1115	+	register int  err;
1116	+	register int    x, ti;
1117	+	int  errp;
1118	+
1119	+	if (iconheight == 0) {          /* initialize */
1120	+	if (xmax <= ICONSIZ && ymax <= ICONSIZ) {
1121	+	iconwidth = xmax;
1122	+	iconheight = ymax;
1123	+	} else if (xmax > ymax) {
1124	+	iconwidth = ICONSIZ;
1125	+	iconheight = ICONSIZ*ymax/xmax;
1126	+	if (iconheight < 1)
1127	+	iconheight = 1;
1128	+	} else {
1129	+	iconwidth = ICONSIZ*xmax/ymax;
1130	+	if (iconwidth < 1)
1131	+	iconwidth = 1;
1132	+	iconheight = ICONSIZ;
1133	+	}
1134	+	ynext = 0;
1135	+	dp = icondata - 1;
1136	+	}
1137	+	if (y < ynext*ymax/iconheight)  /* skip this one */
1138	+	return;
1139	+	err = 0;
1140	+	for (x = 0; x < iconwidth; x++) {
1141	+	if (!(x&7))
1142	+	*++dp = 0;
1143	+	errp = err;
1144	+	ti = x*xmax/iconwidth;
1145	+	copycolr(clr, scan[ti]);
1146	+	normcolrs(clr, 1, scale);
1147	+	err += normbright(clr) + cerr[x];
1148	+	if (err > 127)
1149	+	err -= 255;
1150	+	else
1151	+	*dp |= 1<<(x&07);
1152	+	err /= 3;
1153	+	cerr[x] = err + errp;
1154	+	}
1155	+	ynext++;
1156	+	}
1157	+
1158	+
1159		getfull()                       /* get full (24-bit) data */
1160		{
1161		int     y;
1162	+	register unsigned int4  *dp;
1163	+	register unsigned int2  *dph;
1164	+	register int    x;
1165	+	/* initialize tone mapping */
1166	+	make_tonemap();
1167	+	/* read and convert file */
1168	+	dp = (unsigned int4 *)ourdata;
1169	+	dph = (unsigned int2 *)ourdata;
1170	+	for (y = 0; y < ymax; y++) {
1171	+	getscan(y);
1172	+	add2icon(y, scanline);
1173	+	tmap_colrs(scanline, xmax);
1174	+	switch (ourras->image->blue_mask) {
1175	+	case 0xff:              /* 24-bit RGB */
1176	+	for (x = 0; x < xmax; x++)
1177	+	*dp++ = (unsigned int4)scanline[x][RED] << 16 |
1178	+	(unsigned int4)scanline[x][GRN] << 8 |
1179	+	(unsigned int4)scanline[x][BLU] ;
1180	+	break;
1181	+	case 0xff0000:          /* 24-bit BGR */
1182	+	for (x = 0; x < xmax; x++)
1183	+	*dp++ = (unsigned int4)scanline[x][RED] |
1184	+	(unsigned int4)scanline[x][GRN] << 8 |
1185	+	(unsigned int4)scanline[x][BLU] << 16 ;
1186	+	break;
1187	+	#if 0
1188	+	case 0x1f:              /* 15-bit RGB */
1189	+	for (x = 0; x < xmax; x++)
1190	+	*dph++ =        (scanline[x][RED] << 7 & 0x7c00) |
1191	+	(scanline[x][GRN] << 2 & 0x3e0) |
1192	+	(unsigned)scanline[x][BLU] >> 3 ;
1193	+	break;
1194	+	case 0x7c00:            /* 15-bit BGR */
1195	+	for (x = 0; x < xmax; x++)
1196	+	*dph++ =        (unsigned)scanline[x][RED] >> 3 |
1197	+	(scanline[x][GRN] << 2 & 0x3e0) |
1198	+	(scanline[x][BLU] << 7 & 0x7c00) ;
1199	+	break;
1200	+	#endif
1201	+	default:                /* unknown */
1202	+	if (ourvis.depth > 16)
1203	+	for (x = 0; x < xmax; x++) {
1204	+	*dp = ourras->image->red_mask &
1205	+	ourras->image->red_mask*scanline[x][RED]/255;
1206	+	*dp |= ourras->image->green_mask &
1207	+	ourras->image->green_mask*scanline[x][GRN]/255;
1208	+	*dp++ |= ourras->image->blue_mask &
1209	+	ourras->image->blue_mask*scanline[x][BLU]/255;
1210	+	}
1211	+	else
1212	+	for (x = 0; x < xmax; x++) {
1213	+	*dph = ourras->image->red_mask &
1214	+	ourras->image->red_mask*scanline[x][RED]/255;
1215	+	*dph |= ourras->image->green_mask &
1216	+	ourras->image->green_mask*scanline[x][GRN]/255;
1217	+	*dph++ |= ourras->image->blue_mask &
1218	+	ourras->image->blue_mask*scanline[x][BLU]/255;
1219	+	}
1220	+	break;
1221	+	}
1222	+	}
1223	+	}
1224
1225	<	for (y = 0; y < ymax; y++)
1226	<	picreadline3(y, (rgbpixel *)(ourdata+y*xmax*3));
1225	>
1226	>	getgrey()                       /* get greyscale data */
1227	>	{
1228	>	int     y;
1229	>	register unsigned char  *dp;
1230	>	register int    x;
1231	>	/* initialize tone mapping */
1232	>	make_tonemap();
1233	>	/* read and convert file */
1234	>	dp = ourdata;
1235	>	for (y = 0; y < ymax; y++) {
1236	>	getscan(y);
1237	>	add2icon(y, scanline);
1238	>	tmap_colrs(scanline, xmax);
1239	>	if (maxcolors < 256)
1240	>	for (x = 0; x < xmax; x++)
1241	>	*dp++ = ((int4)scanline[x][GRN] *
1242	>	maxcolors + maxcolors/2) >> 8;
1243	>	else
1244	>	for (x = 0; x < xmax; x++)
1245	>	*dp++ = scanline[x][GRN];
1246	>	}
1247	>	for (x = 0; x < maxcolors; x++)
1248	>	clrtab[x][RED] = clrtab[x][GRN] =
1249	>	clrtab[x][BLU] = ((int4)x*256 + 128)/maxcolors;
1250		}
1251
1252
1253	+	getmapped()                     /* get color-mapped data */
1254	+	{
1255	+	int     y;
1256	+	/* make sure we can do it first */
1257	+	if (fname == NULL)
1258	+	quiterr("cannot map colors from standard input");
1259	+	/* initialize tone mapping */
1260	+	make_tonemap();
1261	+	/* make histogram */
1262	+	if (new_histo((int4)xmax*ymax) == -1)
1263	+	quiterr("cannot initialize histogram");
1264	+	for (y = 0; y < ymax; y++) {
1265	+	if (getscan(y) < 0)
1266	+	break;
1267	+	add2icon(y, scanline);
1268	+	tmap_colrs(scanline, xmax);
1269	+	cnt_colrs(scanline, xmax);
1270	+	}
1271	+	/* map pixels */
1272	+	if (!new_clrtab(maxcolors))
1273	+	quiterr("cannot create color map");
1274	+	for (y = 0; y < ymax; y++) {
1275	+	getscan(y);
1276	+	tmap_colrs(scanline, xmax);
1277	+	if (dither)
1278	+	dith_colrs(ourdata+y*xmax, scanline, xmax);
1279	+	else
1280	+	map_colrs(ourdata+y*xmax, scanline, xmax);
1281	+	}
1282	+	}
1283	+
1284	+
1285		scale_rcolors(xr, sf)                   /* scale color map */
1286		register XRASTER        *xr;
1287		double  sf;
#	Line 644 | Line 1313 | double sf;
1313		getscan(y)
1314		int  y;
1315		{
1316	+	static int  trunced = -1;               /* truncated file? */
1317	+	skipit:
1318	+	if (trunced >= 0 && y >= trunced) {
1319	+	bzero(scanline, xmax*sizeof(COLR));
1320	+	return(-1);
1321	+	}
1322		if (y != cury) {
1323		if (scanpos == NULL || scanpos[y] == -1)
1324		return(-1);
1325		if (fseek(fin, scanpos[y], 0) == -1)
1326	<	quit("fseek error");
1326	>	quiterr("fseek error");
1327		cury = y;
1328	<	} else if (scanpos != NULL)
1328	>	} else if (scanpos != NULL && scanpos[y] == -1)
1329		scanpos[y] = ftell(fin);
1330
1331	<	if (freadcolrs(scanline, xmax, fin) < 0)
1332	<	quiterr("read error");
1333	<
1331	>	if (freadcolrs(scanline, xmax, fin) < 0) {
1332	>	fprintf(stderr, "%s: %s: unfinished picture\n",
1333	>	progname, fname==NULL?"<stdin>":fname);
1334	>	trunced = y;
1335	>	goto skipit;
1336	>	}
1337		cury++;
1338		return(0);
661	–	}
662	–
663	–
664	–	picreadline3(y, l3)                     /* read in 3-byte scanline */
665	–	int  y;
666	–	register rgbpixel  *l3;
667	–	{
668	–	register int    i;
669	–	/* read scanline */
670	–	if (getscan(y) < 0)
671	–	quiterr("cannot seek for picreadline");
672	–	/* convert scanline */
673	–	normcolrs(scanline, xmax, scale);
674	–	for (i = 0; i < xmax; i++) {
675	–	l3[i].r = scanline[i][RED];
676	–	l3[i].g = scanline[i][GRN];
677	–	l3[i].b = scanline[i][BLU];
678	–	}
679	–	}
680	–
681	–
682	–	picwriteline(y, l)              /* add 8-bit scanline to image */
683	–	int  y;
684	–	pixel  *l;
685	–	{
686	–	bcopy((char *)l, (char *)ourdata+y*xmax, xmax);
687	–	}
688	–
689	–
690	–	picreadcm(map)                  /* do gamma correction */
691	–	colormap  map;
692	–	{
693	–	extern double  pow();
694	–	register int  i, val;
695	–
696	–	for (i = 0; i < 256; i++) {
697	–	val = pow(i/256.0, 1.0/gamcor) * 256.0;
698	–	map[0][i] = map[1][i] = map[2][i] = val;
699	–	}
700	–	}
701	–
702	–
703	–	picwritecm(map)                 /* handled elsewhere */
704	–	colormap  map;
705	–	{
706	–	#ifdef DEBUG
707	–	register int i;
708	–
709	–	for (i = 0; i < 256; i++)
710	–	printf("%d %d %d\n", map[0][i],map[1][i],map[2][i]);
711	–	#endif
1339		}

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