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

Comparing ray/src/px/x11image.c (file contents):
Revision 1.17 by greg, Thu May 2 17:24:54 1991 UTC vs.
Revision 2.75 by greg, Tue Aug 16 18:09:53 2011 UTC

#	Line 1 | Line 1
1	–	/* Copyright (c) 1990 Regents of the University of California */
2	–
1		#ifndef lint
2	<	static char SCCSid[] = "$SunId$ LBL";
2	>	static const char RCSid[] = "$Id$";
3		#endif
6	–
4		/*
5		*  x11image.c - driver for X-windows
6		*
#	Line 21 | Line 18 | static char SCCSid[] = "$SunId$ LBL";
18
19		#include  "standard.h"
20
21	+	#include  <string.h>
22	+	#include  <signal.h>
23	+	#include  <unistd.h>
24	+	#include  <sys/types.h>
25	+	#include  <sys/wait.h>
26		#include  <X11/Xlib.h>
27		#include  <X11/cursorfont.h>
28		#include  <X11/Xutil.h>
29	+	#include  <X11/Xatom.h>
30
31		#include  "color.h"
32	+	#include  "tonemap.h"
33	+	#include  "clrtab.h"
34		#include  "view.h"
30	–	#include  "pic.h"
35		#include  "x11raster.h"
36		#include  "random.h"
37
38		#define  FONTNAME       "8x13"          /* text font we'll use */
39
40	<	#define  CTRL(c)        ('c'-'@')
40	>	#define  CTRL(c)        ((c)-'@')
41
42		#define  BORWIDTH       5               /* border width */
43
44	<	#define  ICONSIZ        80              /* maximum icon dimension */
44	>	#define  ICONSIZ        (8*10)          /* maximum icon dimension (even 8) */
45
46	+	#define  FIXWEIGHT      20              /* weight to add for fixation points */
47	+
48		#define  ourscreen      DefaultScreen(thedisplay)
43	–	#define  ourblack       BlackPixel(thedisplay,ourscreen)
44	–	#define  ourwhite       WhitePixel(thedisplay,ourscreen)
49		#define  ourroot        RootWindow(thedisplay,ourscreen)
46	–	#define  ourgc          DefaultGC(thedisplay,ourscreen)
50
51		#define  revline(x0,y0,x1,y1)   XDrawLine(thedisplay,wind,revgc,x0,y0,x1,y1)
52
53		#define  redraw(x,y,w,h) patch_raster(wind,(x)-xoff,(y)-yoff,x,y,w,h,ourras)
54
55		double  gamcor = 2.2;                   /* gamma correction */
56	+	char  *gamstr = NULL;                   /* gamma value override */
57
58		int  dither = 1;                        /* dither colors? */
59		int  fast = 0;                          /* keep picture in Pixmap? */
60
61	<	Window  wind = 0;                       /* our output window */
58	<	Font  fontid;                           /* our font */
61	>	char    *dispname = NULL;               /* our display name */
62
63	+	Window  wind = 0;                       /* our output window */
64	+	unsigned long  ourblack=0, ourwhite=1;  /* black and white for this visual */
65		int  maxcolors = 0;                     /* maximum colors */
66		int  greyscale = 0;                     /* in grey */
67
#	Line 65 | Line 70 | int  scale = 0;                                /* scalefactor; power of two */
70		int  xoff = 0;                          /* x image offset */
71		int  yoff = 0;                          /* y image offset */
72
73	+	int  parent = 0;                        /* number of children, -1 if child */
74	+	int  sequential = 0;                    /* display images in sequence */
75	+
76	+	char  *tout = "od";                     /* output of 't' command */
77	+	int  tinterv = 0;                       /* interval between mouse reports */
78	+
79	+	int  tmflags = TM_F_LINEAR;             /* tone mapping flags */
80	+
81		VIEW  ourview = STDVIEW;                /* image view parameters */
82		int  gotview = 0;                       /* got parameters from file */
83
84		COLR  *scanline;                        /* scan line buffer */
85	+	TMbright  *lscan;                       /* encoded luminance scanline */
86	+	uby8  *cscan;                           /* encoded chroma scanline */
87	+	uby8  *pscan;                           /* compute pixel scanline */
88
89	<	int  xmax, ymax;                        /* picture resolution */
89	>	RESOLU  inpres;                         /* input resolution and ordering */
90	>	int  xmax, ymax;                        /* picture dimensions */
91		int  width, height;                     /* window size */
92		char  *fname = NULL;                    /* input file name */
93	<	FILE  *fin = stdin;                     /* input file */
93	>	FILE  *fin = NULL;                      /* input file */
94		long  *scanpos = NULL;                  /* scan line positions in file */
95		int  cury = 0;                          /* current scan location */
96
#	Line 81 | Line 98 | double  exposure = 1.0;                        /* exposure compensation use
98
99		int  wrongformat = 0;                   /* input in another format? */
100
101	+	TMstruct        *tmGlobal;              /* base tone-mapping */
102	+	TMstruct        *tmCurrent;             /* curren tone-mapping */
103	+
104	+	GC      ourgc;                          /* standard graphics context */
105		GC      revgc;                          /* graphics context with GXinvert */
106
107	<	XRASTER *ourras;                        /* our stored image */
107	>	int             *ourrank;               /* our visual class ranking */
108	>	XVisualInfo     ourvis;                 /* our visual */
109	>	XRASTER         *ourras;                /* our stored image */
110		unsigned char   *ourdata;               /* our image data */
111
112		struct {
113		int  xmin, ymin, xsiz, ysiz;
114	<	}  box = {0, 0, 0, 0};                  /* current box */
114	>	}  bbox = {0, 0, 0, 0};                 /* current bbox */
115
116		char  *geometry = NULL;                 /* geometry specification */
117
118	<	char  icondata[(ICONSIZ+7)/8*ICONSIZ];  /* icon bitmap data */
118	>	char  icondata[ICONSIZ*ICONSIZ/8];      /* icon bitmap data */
119		int  iconwidth = 0, iconheight = 0;
120
121		char  *progname;
122
123		char  errmsg[128];
124
125	<	extern long  ftell();
125	>	uby8  clrtab[256][3];                   /* global color map */
126
104	–	extern char  *malloc(), *calloc();
127
106	–	extern double  atof(), pow(), log();
107	–
128		Display  *thedisplay;
129	+	Atom  closedownAtom, wmProtocolsAtom;
130
131	<	main(argc, argv)
132	<	int  argc;
133	<	char  *argv[];
131	>	int  sigrecv;
132	>
133	>	void  onsig(int i) { sigrecv++; }
134	>
135	>	typedef void doboxf_t(COLR *scn, int n, void *);
136	>
137	>	static gethfunc headline;
138	>	static void init(int argc, char **argv);
139	>	static void quiterr(char *err);
140	>	static int viscmp(XVisualInfo *v1, XVisualInfo *v2);
141	>	static void getbestvis(void);
142	>	static void getras(void);
143	>	static void getevent(void);
144	>	static int traceray(int xpos, int ypos);
145	>	static int docom(XKeyPressedEvent *ekey);
146	>	static void moveimage(XButtonPressedEvent *ebut);
147	>	static void getbox(XButtonPressedEvent *ebut);
148	>	static void trackrays(XButtonPressedEvent *ebut);
149	>	static void revbox(int x0, int y0, int x1, int y1);
150	>	static doboxf_t colavg;
151	>	static doboxf_t addfix;
152	>	static int avgbox(COLOR cavg);
153	>	static int dobox(doboxf_t *f, void *p);
154	>	static void make_tonemap(void);
155	>	static void tmap_colrs(COLR *scn, int len);
156	>	static void getmono(void);
157	>	static void add2icon(int y, COLR *scan);
158	>	static void getfull(void);
159	>	static void getgrey(void);
160	>	static void getmapped(void);
161	>	static void scale_rcolors(XRASTER *xr, double sf);
162	>	static int getscan(int y);
163	>
164	>
165	>	int
166	>	main(int  argc, char  *argv[])
167		{
114	–	int  headline();
168		int  i;
169	+	int  pid;
170
171		progname = argv[0];
172	+	fin = stdin;
173
174		for (i = 1; i < argc; i++)
175		if (argv[i][0] == '-')
176		switch (argv[i][1]) {
177	<	case 'c':
177	>	case 'c':                       /* number of colors */
178		maxcolors = atoi(argv[++i]);
179		break;
180	<	case 'b':
180	>	case 'b':                       /* greyscale only */
181		greyscale = !greyscale;
182		break;
183	<	case 'm':
183	>	case 'm':                       /* monochrome */
184	>	greyscale = 1;
185		maxcolors = 2;
186		break;
187	<	case 'd':
188	<	dither = !dither;
187	>	case 'd':                       /* display or dither */
188	>	if (argv[i][2] == 'i')
189	>	dispname = argv[++i];
190	>	else
191	>	dither = !dither;
192		break;
193	<	case 'f':
193	>	case 'f':                       /* save pixmap */
194		fast = !fast;
195		break;
196	<	case 'e':
197	<	if (argv[i+1][0] != '+' && argv[i+1][0] != '-')
196	>	case 's':                       /* one at a time */
197	>	sequential = !sequential;
198	>	break;
199	>	case 'o':                       /* 't' output */
200	>	tout = argv[i]+2;
201	>	break;
202	>	case 't':                       /* msec interval */
203	>	tinterv = atoi(argv[++i]);
204	>	break;
205	>	case 'e':                       /* exposure comp. */
206	>	i++;
207	>	if (argv[i][0] == 'a') {
208	>	tmflags = TM_F_CAMERA;
209	>	break;
210	>	}
211	>	if (argv[i][0] == 'h') {
212	>	tmflags = TM_F_HUMAN;
213	>	break;
214	>	}
215	>	if (argv[i][0] != '+' && argv[i][0] != '-')
216		goto userr;
217	<	scale = atoi(argv[++i]);
217	>	scale = atoi(argv[i]);
218		break;
219	<	case 'g':
220	<	if (!strcmp(argv[i], "-geometry"))
219	>	case 'g':                       /* gamma comp. */
220	>	if (argv[i][2] == 'e')
221		geometry = argv[++i];
222		else
223	<	gamcor = atof(argv[++i]);
223	>	gamstr = argv[++i];
224		break;
225		default:
226		goto userr;
#	Line 153 | Line 230 | char  *argv[];
230		else
231		break;
232
233	<	if (i == argc-1) {
233	>	if (i > argc)
234	>	goto userr;
235	>	while (i < argc-1) {
236	>	sigrecv = 0;
237	>	signal(SIGCONT, onsig);
238	>	if ((pid=fork()) == 0) {        /* a child for each picture */
239	>	parent = -1;
240	>	break;
241	>	}
242	>	if (pid < 0)
243	>	quiterr("fork failed");
244	>	parent++;
245	>	while (!sigrecv)
246	>	pause();        /* wait for wake-up call */
247	>	i++;
248	>	}
249	>	if (i < argc) {                 /* open picture file */
250		fname = argv[i];
251		fin = fopen(fname, "r");
252	<	if (fin == NULL) {
253	<	sprintf(errmsg, "can't open file \"%s\"", fname);
254	<	quiterr(errmsg);
162	<	}
163	<	} else if (i != argc)
164	<	goto userr;
252	>	if (fin == NULL)
253	>	quiterr("cannot open picture file");
254	>	}
255		/* get header */
256		getheader(fin, headline, NULL);
257		/* get picture dimensions */
258	<	if (wrongformat || fgetresolu(&xmax, &ymax, fin) != (YMAJOR|YDECR))
258	>	if (wrongformat || !fgetsresolu(&inpres, fin))
259		quiterr("bad picture format");
260	+	xmax = scanlen(&inpres);
261	+	ymax = numscans(&inpres);
262		/* set view parameters */
263		if (gotview && setview(&ourview) != NULL)
264		gotview = 0;
265		if ((scanline = (COLR *)malloc(xmax*sizeof(COLR))) == NULL)
266		quiterr("out of memory");
267
268	<	init();                 /* get file and open window */
268	>	init(argc, argv);                       /* get file and open window */
269
270		for ( ; ; )
271		getevent();             /* main loop */
272		userr:
273		fprintf(stderr,
274	<	"Usage: %s [-geometry spec][-b][-m][-d][-f][-c ncolors][-e +/-stops] file\n",
274	>	"Usage: %s [-di disp][[-ge] spec][-b][-m][-d][-f][-c nclrs][-e spec][-g gamcor][-s][-ospec][-t intvl] hdr ..\n",
275		progname);
276	<	quit(1);
276	>	exit(1);
277		}
278
279
280	<	headline(s)             /* get relevant info from header */
281	<	char  *s;
280	>	static int
281	>	headline(               /* get relevant info from header */
282	>	char    *s,
283	>	void    *p
284	>	)
285		{
191	–	static char  *altname[] = {"rview","rpict","pinterp",VIEWSTR,NULL};
192	–	register char  **an;
286		char  fmt[32];
287
288		if (isexpos(s))
289		exposure *= exposval(s);
290	<	else if (isformat(s)) {
198	<	formatval(fmt, s);
290	>	else if (formatval(fmt, s))
291		wrongformat = strcmp(fmt, COLRFMT);
292	<	} else
293	<	for (an = altname; *an != NULL; an++)
294	<	if (!strncmp(*an, s, strlen(*an))) {
203	<	if (sscanview(&ourview, s+strlen(*an)) > 0)
204	<	gotview++;
205	<	return;
206	<	}
292	>	else if (isview(s) && sscanview(&ourview, s) > 0)
293	>	gotview++;
294	>	return(0);
295		}
296
297
298	<	init()                  /* get data and open window */
298	>	static void
299	>	init(                   /* get data and open window */
300	>	int argc,
301	>	char **argv
302	>	)
303		{
212	–	XWMHints        ourxwmhints;
304		XSetWindowAttributes    ourwinattr;
305	<	XSizeHints  oursizhints;
306	<	register int  i;
305	>	XClassHint      xclshints;
306	>	XWMHints        xwmhints;
307	>	XSizeHints      xszhints;
308	>	XTextProperty   windowName, iconName;
309	>	XGCValues       xgcv;
310	>	char    *name;
311	>	register int    i;
312
313		if (fname != NULL) {
314		scanpos = (long *)malloc(ymax*sizeof(long));
315		if (scanpos == NULL)
316	<	goto memerr;
316	>	quiterr("out of memory");
317		for (i = 0; i < ymax; i++)
318		scanpos[i] = -1;
319	<	}
320	<	if ((thedisplay = XOpenDisplay(NULL)) == NULL)
321	<	quiterr("can't open display; DISPLAY variable set?");
322	<	if (maxcolors == 0) {           /* get number of available colors */
323	<	i = DisplayPlanes(thedisplay,ourscreen);
324	<	maxcolors = i > 8 ? 256 : 1<<i;
325	<	if (maxcolors > 4) maxcolors -= 2;
326	<	}
319	>	name = fname;
320	>	} else
321	>	name = progname;
322	>	/* remove directory prefix from name */
323	>	for (i = strlen(name); i-- > 0; )
324	>	if (name[i] == '/')
325	>	break;
326	>	name += i+1;
327	>	if ((thedisplay = XOpenDisplay(dispname)) == NULL)
328	>	quiterr("cannot open display");
329	>	/* set gamma value */
330	>	if (gamstr == NULL)             /* get it from the X server */
331	>	gamstr = XGetDefault(thedisplay, "radiance", "gamma");
332	>	if (gamstr == NULL)             /* get it from the environment */
333	>	gamstr = getenv("DISPLAY_GAMMA");
334	>	if (gamstr != NULL)
335	>	gamcor = atof(gamstr);
336	>	/* get best visual for default screen */
337	>	getbestvis();
338		/* store image */
339		getras();
340	<	/* open window */
341	<	ourwinattr.border_pixel = ourblack;
342	<	ourwinattr.background_pixel = ourwhite;
236	<	wind = XCreateWindow(thedisplay, ourroot, 0, 0, xmax, ymax, BORWIDTH,
237	<	0, InputOutput, ourras->visual,
238	<	CWBackPixel|CWBorderPixel, &ourwinattr);
239	<	if (wind == 0)
240	<	quiterr("can't create window");
241	<	width = xmax;
242	<	height = ymax;
243	<	fontid = XLoadFont(thedisplay, FONTNAME);
244	<	if (fontid == 0)
245	<	quiterr("can't get font");
246	<	XSetFont(thedisplay, ourgc, fontid);
247	<	revgc = XCreateGC(thedisplay, wind, 0, 0);
248	<	XSetFunction(thedisplay, revgc, GXinvert);
249	<	XStoreName(thedisplay, wind, fname == NULL ? progname : fname);
250	<	XDefineCursor(thedisplay, wind, XCreateFontCursor(thedisplay,
251	<	XC_diamond_cross));
340	>	/* get size and position */
341	>	xszhints.flags = 0;
342	>	xszhints.width = xmax; xszhints.height = ymax;
343		if (geometry != NULL) {
344	<	bzero((char *)&oursizhints, sizeof(oursizhints));
345	<	i = XParseGeometry(geometry, &oursizhints.x, &oursizhints.y,
346	<	(unsigned *)&oursizhints.width,
256	<	(unsigned *)&oursizhints.height);
344	>	i = XParseGeometry(geometry, &xszhints.x, &xszhints.y,
345	>	(unsigned *)&xszhints.width,
346	>	(unsigned *)&xszhints.height);
347		if ((i&(WidthValue|HeightValue)) == (WidthValue|HeightValue))
348	<	oursizhints.flags |= USSize;
349	<	else {
350	<	oursizhints.width = xmax;
261	<	oursizhints.height = ymax;
262	<	oursizhints.flags |= PSize;
263	<	}
348	>	xszhints.flags |= USSize;
349	>	else
350	>	xszhints.flags |= PSize;
351		if ((i&(XValue|YValue)) == (XValue|YValue)) {
352	<	oursizhints.flags |= USPosition;
352	>	xszhints.flags |= USPosition;
353		if (i & XNegative)
354	<	oursizhints.x += DisplayWidth(thedisplay,
355	<	ourscreen)-1-oursizhints.width-2*BORWIDTH;
354	>	xszhints.x += DisplayWidth(thedisplay,
355	>	ourscreen)-1-xszhints.width-2*BORWIDTH;
356		if (i & YNegative)
357	<	oursizhints.y += DisplayHeight(thedisplay,
358	<	ourscreen)-1-oursizhints.height-2*BORWIDTH;
357	>	xszhints.y += DisplayHeight(thedisplay,
358	>	ourscreen)-1-xszhints.height-2*BORWIDTH;
359		}
273	–	XSetNormalHints(thedisplay, wind, &oursizhints);
360		}
361	<	ourxwmhints.flags = InputHint|IconPixmapHint;
362	<	ourxwmhints.input = True;
363	<	ourxwmhints.icon_pixmap = XCreateBitmapFromData(thedisplay,
361	>	/* open window */
362	>	i = CWEventMask|CWCursor|CWBackPixel|CWBorderPixel;
363	>	ourwinattr.border_pixel = ourwhite;
364	>	ourwinattr.background_pixel = ourblack;
365	>	if (ourvis.visual != DefaultVisual(thedisplay,ourscreen)) {
366	>	ourwinattr.colormap = newcmap(thedisplay, ourscreen, ourvis.visual);
367	>	i |= CWColormap;
368	>	}
369	>	ourwinattr.event_mask = ExposureMask|KeyPressMask|ButtonPressMask|
370	>	ButtonReleaseMask|ButtonMotionMask|StructureNotifyMask;
371	>	ourwinattr.cursor = XCreateFontCursor(thedisplay, XC_diamond_cross);
372	>	wind = XCreateWindow(thedisplay, ourroot, xszhints.x, xszhints.y,
373	>	xszhints.width, xszhints.height, BORWIDTH,
374	>	ourvis.depth, InputOutput, ourvis.visual,
375	>	i, &ourwinattr);
376	>	if (wind == 0)
377	>	quiterr("cannot create window");
378	>	width = xmax;
379	>	height = ymax;
380	>	/* prepare graphics drawing context */
381	>	if ((xgcv.font = XLoadFont(thedisplay, FONTNAME)) == 0)
382	>	quiterr("cannot get font");
383	>	xgcv.foreground = ourblack;
384	>	xgcv.background = ourwhite;
385	>	ourgc = XCreateGC(thedisplay, wind, GCForeground|GCBackground|
386	>	GCFont, &xgcv);
387	>	xgcv.function = GXinvert;
388	>	revgc = XCreateGC(thedisplay, wind, GCForeground|GCBackground|
389	>	GCFunction, &xgcv);
390	>
391	>	/* set up the window manager */
392	>	xwmhints.flags = InputHint|IconPixmapHint;
393	>	xwmhints.input = True;
394	>	xwmhints.icon_pixmap = XCreateBitmapFromData(thedisplay,
395		wind, icondata, iconwidth, iconheight);
396	<	XSetWMHints(thedisplay, wind, &ourxwmhints);
397	<	XSelectInput(thedisplay, wind, ButtonPressMask|ButtonReleaseMask
398	<	|ButtonMotionMask|StructureNotifyMask
399	<	|KeyPressMask|ExposureMask);
396	>
397	>	windowName.encoding = iconName.encoding = XA_STRING;
398	>	windowName.format = iconName.format = 8;
399	>	windowName.value = (u_char *)name;
400	>	windowName.nitems = strlen((char *)windowName.value);
401	>	iconName.value = (u_char *)name;
402	>	iconName.nitems = strlen((char *)windowName.value);
403	>
404	>	xclshints.res_name = NULL;
405	>	xclshints.res_class = "Ximage";
406	>	XSetWMProperties(thedisplay, wind, &windowName, &iconName,
407	>	argv, argc, &xszhints, &xwmhints, &xclshints);
408	>	closedownAtom = XInternAtom(thedisplay, "WM_DELETE_WINDOW", False);
409	>	wmProtocolsAtom = XInternAtom(thedisplay, "WM_PROTOCOLS", False);
410	>	XSetWMProtocols(thedisplay, wind, &closedownAtom, 1);
411	>
412		XMapWindow(thedisplay, wind);
284	–	return;
285	–	memerr:
286	–	quiterr("out of memory");
413		} /* end of init */
414
415
416	<	quiterr(err)            /* print message and exit */
417	<	char  *err;
416	>	static void
417	>	quiterr(                /* print message and exit */
418	>	char  *err
419	>	)
420		{
421	<	if (err != NULL) {
422	<	fprintf(stderr, "%s: %s\n", progname, err);
423	<	exit(1);
421	>	register int  es;
422	>	int  cs;
423	>
424	>	if ( (es = (err != NULL)) )
425	>	fprintf(stderr, "%s: %s: %s\n", progname,
426	>	fname==NULL?"<stdin>":fname, err);
427	>	if (thedisplay != NULL)
428	>	XCloseDisplay(thedisplay);
429	>	if ((parent < 0) & (sigrecv == 0))
430	>	kill(getppid(), SIGCONT);
431	>	while (parent > 0 && wait(&cs) != -1) { /* wait for any children */
432	>	if (es == 0)
433	>	es = cs>>8 & 0xff;
434	>	parent--;
435		}
436	<	exit(0);
436	>	exit(es);
437		}
438
439
440	<	eputs(s)
441	<	char    *s;
440	>	static int
441	>	viscmp(         /* compare visual to see which is better, descending */
442	>	register XVisualInfo    *v1,
443	>	register XVisualInfo    *v2
444	>	)
445		{
446	<	fputs(s, stderr);
446	>	int     bad1 = 0, bad2 = 0;
447	>	register int  *rp;
448	>
449	>	if (v1->class == v2->class) {
450	>	if ((v1->class == TrueColor) | (v1->class == DirectColor)) {
451	>	/* prefer 24-bit */
452	>	if ((v1->depth == 24) & (v2->depth > 24))
453	>	return(-1);
454	>	if ((v1->depth > 24) & (v2->depth == 24))
455	>	return(1);
456	>	/* go for maximum depth otherwise */
457	>	return(v2->depth - v1->depth);
458	>	}
459	>	/* don't be too greedy */
460	>	if ((maxcolors <= 1<<v1->depth) & (maxcolors <= 1<<v2->depth))
461	>	return(v1->depth - v2->depth);
462	>	return(v2->depth - v1->depth);
463	>	}
464	>	/* prefer Pseudo when < 15-bit */
465	>	if ((v1->class == TrueColor) | (v1->class == DirectColor) &&
466	>	v1->depth < 15)
467	>	bad1 = 1;
468	>	if ((v2->class == TrueColor) | (v2->class == DirectColor) &&
469	>	v2->depth < 15)
470	>	bad2 = -1;
471	>	if (bad1 | bad2)
472	>	return(bad1+bad2);
473	>	/* otherwise, use class ranking */
474	>	for (rp = ourrank; *rp != -1; rp++) {
475	>	if (v1->class == *rp)
476	>	return(-1);
477	>	if (v2->class == *rp)
478	>	return(1);
479	>	}
480	>	return(0);
481		}
482
483
484	<	quit(code)
485	<	int  code;
484	>	static void
485	>	getbestvis(void)                        /* get the best visual for this screen */
486		{
487	<	exit(code);
487	>	#ifdef DEBUG
488	>	static char  vistype[][12] = {
489	>	"StaticGray",
490	>	"GrayScale",
491	>	"StaticColor",
492	>	"PseudoColor",
493	>	"TrueColor",
494	>	"DirectColor"
495	>	};
496	>	#endif
497	>	static int      rankings[3][6] = {
498	>	{TrueColor,DirectColor,PseudoColor,GrayScale,StaticGray,-1},
499	>	{PseudoColor,GrayScale,StaticGray,-1},
500	>	{PseudoColor,GrayScale,StaticGray,-1}
501	>	};
502	>	XVisualInfo     *xvi;
503	>	int     vismatched;
504	>	register int    i, j;
505	>
506	>	if (greyscale) {
507	>	ourrank = rankings[2];
508	>	if (maxcolors < 2) maxcolors = 256;
509	>	} else if (maxcolors >= 2 && maxcolors <= 256)
510	>	ourrank = rankings[1];
511	>	else {
512	>	ourrank = rankings[0];
513	>	maxcolors = 256;
514	>	}
515	>	/* find best visual */
516	>	ourvis.screen = ourscreen;
517	>	xvi = XGetVisualInfo(thedisplay,VisualScreenMask,&ourvis,&vismatched);
518	>	if (xvi == NULL)
519	>	quiterr("no visuals for this screen!");
520	>	#ifdef DEBUG
521	>	fprintf(stderr, "Supported visuals:\n");
522	>	for (i = 0; i < vismatched; i++)
523	>	fprintf(stderr, "\ttype %s, depth %d\n",
524	>	vistype[xvi[i].class], xvi[i].depth);
525	>	#endif
526	>	for (i = 0, j = 1; j < vismatched; j++)
527	>	if (viscmp(&xvi[i],&xvi[j]) > 0)
528	>	i = j;
529	>	/* compare to least acceptable */
530	>	for (j = 0; ourrank[j++] != -1; )
531	>	;
532	>	ourvis.class = ourrank[--j];
533	>	ourvis.depth = 1;
534	>	if (viscmp(&xvi[i],&ourvis) > 0)
535	>	quiterr("inadequate visuals on this screen");
536	>	/* OK, we'll use it */
537	>	ourvis = xvi[i];
538	>	#ifdef DEBUG
539	>	fprintf(stderr, "Selected visual type %s, depth %d\n",
540	>	vistype[ourvis.class], ourvis.depth);
541	>	#endif
542	>	/* make appropriate adjustments */
543	>	if (ourvis.class == GrayScale || ourvis.class == StaticGray)
544	>	greyscale = 1;
545	>	if (ourvis.depth <= 8 && ourvis.colormap_size < maxcolors)
546	>	maxcolors = ourvis.colormap_size;
547	>	if (ourvis.class == StaticGray) {
548	>	ourblack = 0;
549	>	ourwhite = 255;
550	>	} else if (ourvis.class == PseudoColor) {
551	>	ourblack = BlackPixel(thedisplay,ourscreen);
552	>	ourwhite = WhitePixel(thedisplay,ourscreen);
553	>	if ((ourblack|ourwhite) & ~255L) {
554	>	ourblack = 0;
555	>	ourwhite = 1;
556	>	}
557	>	if (maxcolors > 4)
558	>	maxcolors -= 2;
559	>	} else {
560	>	ourblack = 0;
561	>	ourwhite = ourvis.red_mask|ourvis.green_mask|ourvis.blue_mask;
562	>	}
563	>	XFree((char *)xvi);
564		}
565
566
567	<	getras()                                /* get raster file */
567	>	static void
568	>	getras(void)                            /* get raster file */
569		{
317	–	colormap        ourmap;
318	–	XVisualInfo     vinfo;
319	–
570		if (maxcolors <= 2) {           /* monochrome */
571		ourdata = (unsigned char *)malloc(ymax*((xmax+7)/8));
572		if (ourdata == NULL)
573		goto fail;
574	<	ourras = make_raster(thedisplay, ourscreen, 1, ourdata,
574	>	ourras = make_raster(thedisplay, &ourvis, 1, (char *)ourdata,
575		xmax, ymax, 8);
576		if (ourras == NULL)
577		goto fail;
578		getmono();
579	<	} else if (XMatchVisualInfo(thedisplay,ourscreen,24,TrueColor,&vinfo)
580	<	/* kludge for DirectColor */
581	<	|| XMatchVisualInfo(thedisplay,ourscreen,24,DirectColor,&vinfo)) {
332	<	ourdata = (unsigned char *)malloc(xmax*ymax*3);
579	>	} else if ((ourvis.class == TrueColor) | (ourvis.class == DirectColor)) {
580	>	int  datsiz = ourvis.depth>16 ? sizeof(int32) : sizeof(int16);
581	>	ourdata = (unsigned char *)malloc(datsiz*xmax*ymax);
582		if (ourdata == NULL)
583		goto fail;
584	<	ourras = make_raster(thedisplay, ourscreen, 24, ourdata,
585	<	xmax, ymax, 8);
584	>	ourras = make_raster(thedisplay, &ourvis, datsiz*8,
585	>	(char *)ourdata, xmax, ymax, datsiz*8);
586		if (ourras == NULL)
587		goto fail;
588		getfull();
#	Line 341 | Line 590 | getras()                               /* get raster file */
590		ourdata = (unsigned char *)malloc(xmax*ymax);
591		if (ourdata == NULL)
592		goto fail;
593	<	ourras = make_raster(thedisplay, ourscreen, 8, ourdata,
593	>	ourras = make_raster(thedisplay, &ourvis, 8, (char *)ourdata,
594		xmax, ymax, 8);
595		if (ourras == NULL)
596		goto fail;
597		if (greyscale)
598	<	biq(dither,maxcolors,1,ourmap);
598	>	getgrey();
599		else
600	<	ciq(dither,maxcolors,1,ourmap);
601	<	if (init_rcolors(ourras, ourmap[0], ourmap[1], ourmap[2]) == 0)
600	>	getmapped();
601	>	if (ourvis.class != StaticGray && !init_rcolors(ourras,clrtab))
602		goto fail;
603		}
604		return;
#	Line 358 | Line 607 | fail:
607		}
608
609
610	<	getevent()                              /* process the next event */
610	>	static void
611	>	getevent(void)                          /* process the next event */
612		{
613	<	union {
364	<	XEvent  u;
365	<	XConfigureEvent  c;
366	<	XExposeEvent  e;
367	<	XButtonPressedEvent  b;
368	<	XKeyPressedEvent  k;
369	<	} e;
613	>	XEvent xev;
614
615	<	XNextEvent(thedisplay, &e.u);
616	<	switch (e.u.type) {
615	>	XNextEvent(thedisplay, &xev);
616	>	switch ((int)xev.type) {
617		case KeyPress:
618	<	docom(&e.k);
618	>	docom(&xev.xkey);
619		break;
620		case ConfigureNotify:
621	<	width = e.c.width;
622	<	height = e.c.height;
621	>	width = xev.xconfigure.width;
622	>	height = xev.xconfigure.height;
623		break;
624		case MapNotify:
625		map_rcolors(ourras, wind);
626		if (fast)
627	<	make_rpixmap(ourras);
627	>	make_rpixmap(ourras, wind);
628	>	if ((!sequential) & (parent < 0) & (sigrecv == 0)) {
629	>	kill(getppid(), SIGCONT);
630	>	sigrecv--;
631	>	}
632		break;
633		case UnmapNotify:
634	<	unmap_rcolors(ourras);
634	>	if (!fast)
635	>	unmap_rcolors(ourras);
636		break;
637		case Expose:
638	<	redraw(e.e.x, e.e.y, e.e.width, e.e.height);
638	>	redraw(xev.xexpose.x, xev.xexpose.y,
639	>	xev.xexpose.width, xev.xexpose.height);
640		break;
641		case ButtonPress:
642	<	if (e.b.state & (ShiftMask|ControlMask))
643	<	moveimage(&e.b);
642	>	if (xev.xbutton.state & (ShiftMask|ControlMask))
643	>	moveimage(&xev.xbutton);
644		else
645	<	getbox(&e.b);
645	>	switch (xev.xbutton.button) {
646	>	case Button1:
647	>	getbox(&xev.xbutton);
648	>	break;
649	>	case Button2:
650	>	traceray(xev.xbutton.x, xev.xbutton.y);
651	>	break;
652	>	case Button3:
653	>	trackrays(&xev.xbutton);
654	>	break;
655	>	}
656		break;
657	+	case ClientMessage:
658	+	if ((xev.xclient.message_type == wmProtocolsAtom) &&
659	+	(xev.xclient.data.l[0] == closedownAtom))
660	+	quiterr(NULL);
661	+	break;
662		}
663		}
664
665
666	<	docom(ekey)                                     /* execute command */
667	<	XKeyPressedEvent  *ekey;
666	>	static int
667	>	traceray(                       /* print requested pixel data */
668	>	int  xpos,
669	>	int  ypos
670	>	)
671		{
672	+	RREAL  hv[2];
673	+	FVECT  rorg, rdir;
674	+	COLOR  cval;
675	+	register char  *cp;
676	+
677	+	bbox.xmin = xpos; bbox.xsiz = 1;
678	+	bbox.ymin = ypos; bbox.ysiz = 1;
679	+	avgbox(cval);
680	+	scalecolor(cval, 1./exposure);
681	+	pix2loc(hv, &inpres, xpos-xoff, ypos-yoff);
682	+	if (!gotview || viewray(rorg, rdir, &ourview, hv[0], hv[1]) < 0)
683	+	rorg[0] = rorg[1] = rorg[2] =
684	+	rdir[0] = rdir[1] = rdir[2] = 0.;
685	+
686	+	for (cp = tout; *cp; cp++)      /* print what they asked for */
687	+	switch (*cp) {
688	+	case 'o':                       /* origin */
689	+	printf("%e %e %e ", rorg[0], rorg[1], rorg[2]);
690	+	break;
691	+	case 'd':                       /* direction */
692	+	printf("%e %e %e ", rdir[0], rdir[1], rdir[2]);
693	+	break;
694	+	case 'v':                       /* radiance value */
695	+	printf("%e %e %e ", colval(cval,RED),
696	+	colval(cval,GRN), colval(cval,BLU));
697	+	break;
698	+	case 'l':                       /* luminance */
699	+	printf("%e ", luminance(cval));
700	+	break;
701	+	case 'p':                       /* pixel position */
702	+	printf("%d %d ", (int)(hv[0]*inpres.xr),
703	+	(int)(hv[1]*inpres.yr));
704	+	break;
705	+	}
706	+	putchar('\n');
707	+	fflush(stdout);
708	+	return(0);
709	+	}
710	+
711	+
712	+	static int
713	+	docom(                          /* execute command */
714	+	XKeyPressedEvent  *ekey
715	+	)
716	+	{
717		char  buf[80];
718		COLOR  cval;
719		XColor  cvx;
720		int  com, n;
721		double  comp;
722	<	FVECT  rorg, rdir;
722	>	RREAL  hv[2];
723
724		n = XLookupString(ekey, buf, sizeof(buf), NULL, NULL);
725		if (n == 0)
#	Line 414 | Line 727 | XKeyPressedEvent  *ekey;
727		com = buf[0];
728		switch (com) {                  /* interpret command */
729		case 'q':
730	<	case CTRL(D):                           /* quit */
731	<	quit(0);
730	>	case 'Q':
731	>	case CTRL('D'):                         /* quit */
732	>	quiterr(NULL);
733		case '\n':
734		case '\r':
735		case 'l':
736		case 'c':                               /* value */
737	<	if (avgbox(cval) == -1)
737	>	if (!avgbox(cval))
738		return(-1);
739		switch (com) {
740		case '\n':
#	Line 428 | Line 742 | XKeyPressedEvent  *ekey;
742		sprintf(buf, "%.3f", intens(cval)/exposure);
743		break;
744		case 'l':                               /* luminance */
745	<	sprintf(buf, "%.0fL", luminance(cval)/exposure);
745	>	sprintf(buf, "%.1fL", luminance(cval)/exposure);
746		break;
747		case 'c':                               /* color */
748		comp = pow(2.0, (double)scale);
#	Line 439 | Line 753 | XKeyPressedEvent  *ekey;
753		break;
754		}
755		XDrawImageString(thedisplay, wind, ourgc,
756	<	box.xmin, box.ymin+box.ysiz, buf, strlen(buf));
756	>	bbox.xmin, bbox.ymin+bbox.ysiz, buf, strlen(buf));
757		return(0);
758		case 'i':                               /* identify (contour) */
759		if (ourras->pixels == NULL)
#	Line 454 | Line 768 | XKeyPressedEvent  *ekey;
768		XStoreColor(thedisplay, ourras->cmap, &cvx);
769		return(0);
770		case 'p':                               /* position */
771	<	sprintf(buf, "(%d,%d)", ekey->x-xoff, ymax-1-ekey->y+yoff);
771	>	pix2loc(hv, &inpres, ekey->x-xoff, ekey->y-yoff);
772	>	sprintf(buf, "(%d,%d)", (int)(hv[0]*inpres.xr),
773	>	(int)(hv[1]*inpres.yr));
774		XDrawImageString(thedisplay, wind, ourgc, ekey->x, ekey->y,
775		buf, strlen(buf));
776		return(0);
777		case 't':                               /* trace */
778	<	if (!gotview) {
779	<	XBell(thedisplay, 0);
778	>	return(traceray(ekey->x, ekey->y));
779	>	case 'a':                               /* auto exposure */
780	>	if (fname == NULL)
781		return(-1);
782	<	}
783	<	if (viewray(rorg, rdir, &ourview,
784	<	(ekey->x-xoff+.5)/xmax,
785	<	(ymax-1-ekey->y+yoff+.5)/ymax) < 0)
782	>	tmflags = TM_F_CAMERA;
783	>	strcpy(buf, "auto exposure...");
784	>	goto remap;
785	>	case 'h':                               /* human response */
786	>	if (fname == NULL)
787		return(-1);
788	<	printf("%e %e %e ", rorg[0], rorg[1], rorg[2]);
789	<	printf("%e %e %e\n", rdir[0], rdir[1], rdir[2]);
790	<	fflush(stdout);
473	<	return(0);
788	>	tmflags = TM_F_HUMAN;
789	>	strcpy(buf, "human exposure...");
790	>	goto remap;
791		case '=':                               /* adjust exposure */
792	<	if (avgbox(cval) == -1)
792	>	case '@':                               /* adaptation level */
793	>	if (!avgbox(cval))
794		return(-1);
795	<	n = log(.5/bright(cval))/.69315 - scale;        /* truncate */
796	<	if (n == 0)
797	<	return(0);
798	<	scale_rcolors(ourras, pow(2.0, (double)n));
795	>	comp = bright(cval);
796	>	if (comp < 1e-20) {
797	>	XBell(thedisplay, 0);
798	>	return(-1);
799	>	}
800	>	if (com == '@')
801	>	comp = 106./exposure/
802	>	pow(1.219+pow(comp*WHTEFFICACY/exposure,.4),2.5);
803	>	else
804	>	comp = .5/comp;
805	>	comp = log(comp)/.69315 - scale;
806	>	n = comp < 0 ? comp-.5 : comp+.5 ;      /* round */
807	>	if (tmflags != TM_F_LINEAR)
808	>	tmflags = TM_F_LINEAR;  /* turn off tone mapping */
809	>	else {
810	>	if (n == 0)             /* else check if any change */
811	>	return(0);
812	>	scale_rcolors(ourras, pow(2.0, (double)n));
813	>	}
814		scale += n;
815		sprintf(buf, "%+d", scale);
816	+	remap:
817		XDrawImageString(thedisplay, wind, ourgc,
818	<	box.xmin, box.ymin+box.ysiz, buf, strlen(buf));
818	>	bbox.xmin, bbox.ymin+bbox.ysiz, buf, strlen(buf));
819		XFlush(thedisplay);
820	<	free(ourdata);
820	>	/* free(ourdata);       This is done in XDestroyImage()! */
821		free_raster(ourras);
822		getras();
823		/* fall through */
824	<	case CTRL(R):                           /* redraw */
825	<	case CTRL(L):
824	>	case CTRL('R'):                         /* redraw */
825	>	case CTRL('L'):
826		unmap_rcolors(ourras);
827		XClearWindow(thedisplay, wind);
828		map_rcolors(ourras, wind);
829		if (fast)
830	<	make_rpixmap(ourras);
830	>	make_rpixmap(ourras, wind);
831		redraw(0, 0, width, height);
832		return(0);
833	+	case 'f':                               /* turn on fast redraw */
834	+	fast = 1;
835	+	make_rpixmap(ourras, wind);
836	+	return(0);
837	+	case 'F':                               /* turn off fast redraw */
838	+	fast = 0;
839	+	free_rpixmap(ourras);
840	+	return(0);
841	+	case '0':                               /* recenter origin */
842	+	if ((xoff == 0) & (yoff == 0))
843	+	return(0);
844	+	xoff = yoff = 0;
845	+	XClearWindow(thedisplay, wind);
846	+	redraw(0, 0, width, height);
847	+	return(0);
848		case ' ':                               /* clear */
849	<	redraw(box.xmin, box.ymin, box.xsiz, box.ysiz);
849	>	redraw(bbox.xmin, bbox.ymin, bbox.xsiz, bbox.ysiz);
850		return(0);
851		default:
852		XBell(thedisplay, 0);
#	Line 506 | Line 855 | XKeyPressedEvent  *ekey;
855		}
856
857
858	<	moveimage(ebut)                         /* shift the image */
859	<	XButtonPressedEvent  *ebut;
858	>	static void
859	>	moveimage(                              /* shift the image */
860	>	XButtonPressedEvent  *ebut
861	>	)
862		{
863	<	union {
513	<	XEvent  u;
514	<	XButtonReleasedEvent  b;
515	<	XPointerMovedEvent  m;
516	<	}  e;
863	>	XEvent  e;
864		int     mxo, myo;
865
866	<	XMaskEvent(thedisplay, ButtonReleaseMask|ButtonMotionMask, &e.u);
867	<	while (e.u.type == MotionNotify) {
868	<	mxo = e.m.x;
869	<	myo = e.m.y;
866	>	XMaskEvent(thedisplay, ButtonReleaseMask|ButtonMotionMask, &e);
867	>	while (e.type == MotionNotify) {
868	>	mxo = e.xmotion.x;
869	>	myo = e.xmotion.y;
870		revline(ebut->x, ebut->y, mxo, myo);
871		revbox(xoff+mxo-ebut->x, yoff+myo-ebut->y,
872		xoff+mxo-ebut->x+xmax, yoff+myo-ebut->y+ymax);
873	<	XMaskEvent(thedisplay,ButtonReleaseMask|ButtonMotionMask,&e.u);
873	>	XMaskEvent(thedisplay,ButtonReleaseMask|ButtonMotionMask,&e);
874		revline(ebut->x, ebut->y, mxo, myo);
875		revbox(xoff+mxo-ebut->x, yoff+myo-ebut->y,
876		xoff+mxo-ebut->x+xmax, yoff+myo-ebut->y+ymax);
877		}
878	<	xoff += e.b.x - ebut->x;
879	<	yoff += e.b.y - ebut->y;
878	>	xoff += e.xbutton.x - ebut->x;
879	>	yoff += e.xbutton.y - ebut->y;
880		XClearWindow(thedisplay, wind);
881		redraw(0, 0, width, height);
882		}
883
884
885	<	getbox(ebut)                            /* get new box */
886	<	XButtonPressedEvent  *ebut;
885	>	static void
886	>	getbox(                         /* get new bbox */
887	>	XButtonPressedEvent  *ebut
888	>	)
889		{
890	<	union {
542	<	XEvent  u;
543	<	XButtonReleasedEvent  b;
544	<	XPointerMovedEvent  m;
545	<	}  e;
890	>	XEvent  e;
891
892	<	XMaskEvent(thedisplay, ButtonReleaseMask|ButtonMotionMask, &e.u);
893	<	while (e.u.type == MotionNotify) {
894	<	revbox(ebut->x, ebut->y, box.xmin = e.m.x, box.ymin = e.m.y);
895	<	XMaskEvent(thedisplay,ButtonReleaseMask|ButtonMotionMask,&e.u);
896	<	revbox(ebut->x, ebut->y, box.xmin, box.ymin);
892	>	XMaskEvent(thedisplay, ButtonReleaseMask|ButtonMotionMask, &e);
893	>	while (e.type == MotionNotify) {
894	>	revbox(ebut->x, ebut->y, bbox.xmin = e.xmotion.x, bbox.ymin = e.xmotion.y);
895	>	XMaskEvent(thedisplay,ButtonReleaseMask|ButtonMotionMask,&e);
896	>	revbox(ebut->x, ebut->y, bbox.xmin, bbox.ymin);
897		}
898	<	box.xmin = e.b.x<0 ? 0 : (e.b.x>=width ? width-1 : e.b.x);
899	<	box.ymin = e.b.y<0 ? 0 : (e.b.y>=height ? height-1 : e.b.y);
900	<	if (box.xmin > ebut->x) {
901	<	box.xsiz = box.xmin - ebut->x + 1;
902	<	box.xmin = ebut->x;
898	>	bbox.xmin = e.xbutton.x<0 ? 0 : (e.xbutton.x>=width ? width-1 : e.xbutton.x);
899	>	bbox.ymin = e.xbutton.y<0 ? 0 : (e.xbutton.y>=height ? height-1 : e.xbutton.y);
900	>	if (bbox.xmin > ebut->x) {
901	>	bbox.xsiz = bbox.xmin - ebut->x + 1;
902	>	bbox.xmin = ebut->x;
903		} else {
904	<	box.xsiz = ebut->x - box.xmin + 1;
904	>	bbox.xsiz = ebut->x - bbox.xmin + 1;
905		}
906	<	if (box.ymin > ebut->y) {
907	<	box.ysiz = box.ymin - ebut->y + 1;
908	<	box.ymin = ebut->y;
906	>	if (bbox.ymin > ebut->y) {
907	>	bbox.ysiz = bbox.ymin - ebut->y + 1;
908	>	bbox.ymin = ebut->y;
909		} else {
910	<	box.ysiz = ebut->y - box.ymin + 1;
910	>	bbox.ysiz = ebut->y - bbox.ymin + 1;
911		}
912		}
913
914
915	<	revbox(x0, y0, x1, y1)                  /* draw box with reversed lines */
916	<	int  x0, y0, x1, y1;
915	>	static void
916	>	trackrays(                              /* trace rays as mouse moves */
917	>	XButtonPressedEvent  *ebut
918	>	)
919		{
920	+	XEvent  e;
921	+	unsigned long   lastrept;
922	+
923	+	traceray(ebut->x, ebut->y);
924	+	lastrept = ebut->time;
925	+	XMaskEvent(thedisplay, ButtonReleaseMask|ButtonMotionMask, &e);
926	+	while (e.type == MotionNotify) {
927	+	if (e.xmotion.time >= lastrept + tinterv) {
928	+	traceray(e.xmotion.x, e.xmotion.y);
929	+	lastrept = e.xmotion.time;
930	+	}
931	+	XMaskEvent(thedisplay,ButtonReleaseMask|ButtonMotionMask,&e);
932	+	}
933	+	}
934	+
935	+
936	+	static void
937	+	revbox(                 /* draw bbox with reversed lines */
938	+	int  x0,
939	+	int  y0,
940	+	int  x1,
941	+	int  y1
942	+	)
943	+	{
944		revline(x0, y0, x1, y0);
945		revline(x0, y1, x1, y1);
946		revline(x0, y0, x0, y1);
#	Line 577 | Line 948 | int  x0, y0, x1, y1;
948		}
949
950
951	<	avgbox(clr)                             /* average color over current box */
952	<	COLOR  clr;
951	>	static void
952	>	colavg(
953	>	register COLR   *scn,
954	>	register int    n,
955	>	void *cavg
956	>	)
957		{
958	+	COLOR   col;
959	+
960	+	while (n--) {
961	+	colr_color(col, *scn++);
962	+	addcolor((COLORV*)cavg, col);
963	+	}
964	+	}
965	+
966	+
967	+	static int
968	+	avgbox(                         /* average color over current bbox */
969	+	COLOR   cavg
970	+	)
971	+	{
972	+	double  d;
973	+	register int    rval;
974	+
975	+	setcolor(cavg, 0., 0., 0.);
976	+	rval = dobox(colavg, (void *)cavg);
977	+	if (rval > 0) {
978	+	d = 1./rval;
979	+	scalecolor(cavg, d);
980	+	}
981	+	return(rval);
982	+	}
983	+
984	+
985	+	static int
986	+	dobox(                          /* run function over bbox */
987	+	//void  (*f)(),                 /* function to call for each subscan */
988	+	doboxf_t *f,                    /* function to call for each subscan */
989	+	void    *p                      /* pointer to private data */
990	+	)
991	+	{
992		int  left, right, top, bottom;
993		int  y;
585	–	double  d;
586	–	COLOR  ctmp;
587	–	register int  x;
994
995	<	setcolor(clr, 0.0, 0.0, 0.0);
996	<	left = box.xmin - xoff;
591	<	right = left + box.xsiz;
995	>	left = bbox.xmin - xoff;
996	>	right = left + bbox.xsiz;
997		if (left < 0)
998		left = 0;
999		if (right > xmax)
1000		right = xmax;
1001		if (left >= right)
1002	<	return(-1);
1003	<	top = box.ymin - yoff;
1004	<	bottom = top + box.ysiz;
1002	>	return(0);
1003	>	top = bbox.ymin - yoff;
1004	>	bottom = top + bbox.ysiz;
1005		if (top < 0)
1006		top = 0;
1007		if (bottom > ymax)
1008		bottom = ymax;
1009		if (top >= bottom)
1010	<	return(-1);
1010	>	return(0);
1011		for (y = top; y < bottom; y++) {
1012		if (getscan(y) == -1)
1013		return(-1);
1014	<	for (x = left; x < right; x++) {
1015	<	colr_color(ctmp, scanline[x]);
1016	<	addcolor(clr, ctmp);
1014	>	(*f)(scanline+left, right-left, p);
1015	>	}
1016	>	return((right-left)*(bottom-top));
1017	>	}
1018	>
1019	>
1020	>	static void
1021	>	addfix(                 /* add fixation points to histogram */
1022	>	COLR    *scn,
1023	>	int     n,
1024	>	void    *p
1025	>	)
1026	>	{
1027	>	TMstruct *      tms = (TMstruct *)p;
1028	>
1029	>	if (tmCvColrs(tms, lscan, TM_NOCHROM, scn, n))
1030	>	goto tmerr;
1031	>	if (tmAddHisto(tms, lscan, n, FIXWEIGHT))
1032	>	goto tmerr;
1033	>	return;
1034	>	tmerr:
1035	>	quiterr("tone mapping error");
1036	>	}
1037	>
1038	>
1039	>	static void
1040	>	make_tonemap(void)                      /* initialize tone mapping */
1041	>	{
1042	>	int  flags, y;
1043	>
1044	>	if (tmflags != TM_F_LINEAR && fname == NULL) {
1045	>	fprintf(stderr, "%s: cannot adjust tone of standard input\n",
1046	>	progname);
1047	>	tmflags = TM_F_LINEAR;
1048	>	}
1049	>	if (tmflags == TM_F_LINEAR) {   /* linear with clamping */
1050	>	setcolrcor(pow, 1.0/gamcor);
1051	>	return;
1052	>	}
1053	>	flags = tmflags;                /* histogram adjustment */
1054	>	if (greyscale) flags |= TM_F_BW;
1055	>	if (tmGlobal != NULL) {         /* reuse old histogram if one */
1056	>	tmDone(tmCurrent); tmCurrent = NULL;
1057	>	tmGlobal->flags = flags;
1058	>	} else {                        /* else initialize */
1059	>	if ((lscan = (TMbright *)malloc(xmax*sizeof(TMbright))) == NULL)
1060	>	goto memerr;
1061	>	if (greyscale) {
1062	>	cscan = TM_NOCHROM;
1063	>	if ((pscan = (uby8 *)malloc(sizeof(uby8)*xmax)) == NULL)
1064	>	goto memerr;
1065	>	} else if ((pscan=cscan = (uby8 *)malloc(3*sizeof(uby8)*xmax))
1066	>	== NULL)
1067	>	goto memerr;
1068	>	/* initialize tm library */
1069	>	tmGlobal = tmInit(flags, stdprims, gamcor);
1070	>	if (tmGlobal == NULL)
1071	>	goto memerr;
1072	>	if (tmSetSpace(tmGlobal, stdprims, WHTEFFICACY/exposure, NULL))
1073	>	goto tmerr;
1074	>	/* compute picture histogram */
1075	>	for (y = 0; y < ymax; y++) {
1076	>	getscan(y);
1077	>	if (tmCvColrs(tmGlobal, lscan, TM_NOCHROM,
1078	>	scanline, xmax))
1079	>	goto tmerr;
1080	>	if (tmAddHisto(tmGlobal, lscan, xmax, 1))
1081	>	goto tmerr;
1082		}
1083		}
1084	<	d = 1.0/((right-left)*(bottom-top));
1085	<	scalecolor(clr, d);
1086	<	return(0);
1084	>	tmCurrent = tmDup(tmGlobal);    /* add fixations to duplicate map */
1085	>	dobox(addfix, (void *)tmCurrent);
1086	>	/* (re)compute tone mapping */
1087	>	if (tmComputeMapping(tmCurrent, gamcor, 0., 0.))
1088	>	goto tmerr;
1089	>	return;
1090	>	memerr:
1091	>	quiterr("out of memory in make_tonemap");
1092	>	tmerr:
1093	>	quiterr("tone mapping error");
1094		}
1095
1096
1097	<	getmono()                       /* get monochrome data */
1097	>	static void
1098	>	tmap_colrs(             /* apply tone mapping to scanline */
1099	>	register COLR  *scn,
1100	>	int  len
1101	>	)
1102		{
1103	+	register uby8  *ps;
1104	+
1105	+	if (tmflags == TM_F_LINEAR) {
1106	+	if (scale)
1107	+	shiftcolrs(scn, len, scale);
1108	+	colrs_gambs(scn, len);
1109	+	return;
1110	+	}
1111	+	if (len > xmax)
1112	+	quiterr("code error 1 in tmap_colrs");
1113	+	if (tmCvColrs(tmCurrent, lscan, cscan, scn, len))
1114	+	goto tmerr;
1115	+	if (tmMapPixels(tmCurrent, pscan, lscan, cscan, len))
1116	+	goto tmerr;
1117	+	ps = pscan;
1118	+	if (greyscale)
1119	+	while (len--) {
1120	+	scn[0][RED] = scn[0][GRN] = scn[0][BLU] = *ps++;
1121	+	scn[0][EXP] = COLXS;
1122	+	scn++;
1123	+	}
1124	+	else
1125	+	while (len--) {
1126	+	scn[0][RED] = *ps++;
1127	+	scn[0][GRN] = *ps++;
1128	+	scn[0][BLU] = *ps++;
1129	+	scn[0][EXP] = COLXS;
1130	+	scn++;
1131	+	}
1132	+	return;
1133	+	tmerr:
1134	+	quiterr("tone mapping error");
1135	+	}
1136	+
1137	+
1138	+	static void
1139	+	getmono(void)                   /* get monochrome data */
1140	+	{
1141		register unsigned char  *dp;
1142		register int    x, err;
1143	<	int     y;
1143	>	int     y, errp;
1144		short   *cerr;
1145
1146		if ((cerr = (short *)calloc(xmax,sizeof(short))) == NULL)
1147		quiterr("out of memory in getmono");
1148		dp = ourdata - 1;
1149		for (y = 0; y < ymax; y++) {
1150	<	if (getscan(y) < 0)
632	<	quiterr("seek error in getmono");
633	<	normcolrs(scanline, xmax, scale);
1150	>	getscan(y);
1151		add2icon(y, scanline);
1152	+	normcolrs(scanline, xmax, scale);
1153		err = 0;
1154		for (x = 0; x < xmax; x++) {
1155		if (!(x&7))
1156		*++dp = 0;
1157	+	errp = err;
1158		err += normbright(scanline[x]) + cerr[x];
1159		if (err > 127)
1160		err -= 255;
1161		else
1162		*dp |= 1<<(7-(x&07));
1163	<	cerr[x] = err >>= 1;
1163	>	err /= 3;
1164	>	cerr[x] = err + errp;
1165		}
1166		}
1167	<	free((char *)cerr);
1167	>	free((void *)cerr);
1168		}
1169
1170
1171	<	add2icon(y, scan)               /* add a scanline to our icon data */
1172	<	int  y;
1173	<	COLR  *scan;
1171	>	static void
1172	>	add2icon(               /* add a scanline to our icon data */
1173	>	int  y,
1174	>	COLR  *scan
1175	>	)
1176		{
655	–	static char  *dp = NULL;
1177		static short  cerr[ICONSIZ];
1178	+	static int  ynext;
1179	+	static char  *dp;
1180	+	COLR  clr;
1181		register int  err;
1182	<	register int    x, xi;
1182	>	register int    x, ti;
1183	>	int  errp;
1184
1185		if (iconheight == 0) {          /* initialize */
1186	<	if (xmax < ICONSIZ && ymax < ICONSIZ) {
1186	>	if (xmax <= ICONSIZ && ymax <= ICONSIZ) {
1187		iconwidth = xmax;
1188		iconheight = ymax;
1189		} else if (xmax > ymax) {
1190		iconwidth = ICONSIZ;
1191		iconheight = ICONSIZ*ymax/xmax;
1192	+	if (iconheight < 1)
1193	+	iconheight = 1;
1194		} else {
1195		iconwidth = ICONSIZ*xmax/ymax;
1196	+	if (iconwidth < 1)
1197	+	iconwidth = 1;
1198		iconheight = ICONSIZ;
1199		}
1200	+	ynext = 0;
1201		dp = icondata - 1;
1202		}
1203	<	if (dp == NULL)                 /* done already */
1203	>	if (y < ynext*ymax/iconheight)  /* skip this one */
1204		return;
675	–	if (y % (ymax/iconheight))      /* skip this one */
676	–	return;
1205		err = 0;
1206		for (x = 0; x < iconwidth; x++) {
1207		if (!(x&7))
1208		*++dp = 0;
1209	<	xi = x*xmax/iconwidth;
1210	<	err += normbright(scan[xi]) + cerr[x];
1209	>	errp = err;
1210	>	ti = x*xmax/iconwidth;
1211	>	copycolr(clr, scan[ti]);
1212	>	normcolrs(&clr, 1, scale);
1213	>	err += normbright(clr) + cerr[x];
1214		if (err > 127)
1215		err -= 255;
1216		else
1217		*dp |= 1<<(x&07);
1218	<	cerr[x] = err >>= 1;
1218	>	err /= 3;
1219	>	cerr[x] = err + errp;
1220		}
1221	<	if (y >= ymax-ymax/iconheight)  /* all done */
690	<	dp = NULL;
1221	>	ynext++;
1222		}
1223
1224
1225	<	getfull()                       /* get full (24-bit) data */
1225	>	static void
1226	>	getfull(void)                   /* get full (24-bit) data */
1227		{
1228		int     y;
1229	+	register uint32 *dp;
1230	+	register uint16 *dph;
1231	+	register int    x;
1232	+	/* initialize tone mapping */
1233	+	make_tonemap();
1234	+	/* read and convert file */
1235	+	dp = (uint32 *)ourdata;
1236	+	dph = (uint16 *)ourdata;
1237	+	for (y = 0; y < ymax; y++) {
1238	+	getscan(y);
1239	+	add2icon(y, scanline);
1240	+	tmap_colrs(scanline, xmax);
1241	+	switch (ourras->image->blue_mask) {
1242	+	case 0xff:              /* 24-bit RGB */
1243	+	for (x = 0; x < xmax; x++)
1244	+	*dp++ = (uint32)scanline[x][RED] << 16 |
1245	+	(uint32)scanline[x][GRN] << 8 |
1246	+	(uint32)scanline[x][BLU] ;
1247	+	break;
1248	+	case 0xff0000:          /* 24-bit BGR */
1249	+	for (x = 0; x < xmax; x++)
1250	+	*dp++ = (uint32)scanline[x][RED] |
1251	+	(uint32)scanline[x][GRN] << 8 |
1252	+	(uint32)scanline[x][BLU] << 16 ;
1253	+	break;
1254	+	#if 0
1255	+	case 0x1f:              /* 15-bit RGB */
1256	+	for (x = 0; x < xmax; x++)
1257	+	*dph++ =        (scanline[x][RED] << 7 & 0x7c00) |
1258	+	(scanline[x][GRN] << 2 & 0x3e0) |
1259	+	(unsigned)scanline[x][BLU] >> 3 ;
1260	+	break;
1261	+	case 0x7c00:            /* 15-bit BGR */
1262	+	for (x = 0; x < xmax; x++)
1263	+	*dph++ =        (unsigned)scanline[x][RED] >> 3 |
1264	+	(scanline[x][GRN] << 2 & 0x3e0) |
1265	+	(scanline[x][BLU] << 7 & 0x7c00) ;
1266	+	break;
1267	+	#endif
1268	+	default:                /* unknown */
1269	+	if (ourvis.depth > 16)
1270	+	for (x = 0; x < xmax; x++) {
1271	+	*dp = ourras->image->red_mask &
1272	+	ourras->image->red_mask*scanline[x][RED]/255;
1273	+	*dp |= ourras->image->green_mask &
1274	+	ourras->image->green_mask*scanline[x][GRN]/255;
1275	+	*dp++ |= ourras->image->blue_mask &
1276	+	ourras->image->blue_mask*scanline[x][BLU]/255;
1277	+	}
1278	+	else
1279	+	for (x = 0; x < xmax; x++) {
1280	+	*dph = ourras->image->red_mask &
1281	+	ourras->image->red_mask*scanline[x][RED]/255;
1282	+	*dph |= ourras->image->green_mask &
1283	+	ourras->image->green_mask*scanline[x][GRN]/255;
1284	+	*dph++ |= ourras->image->blue_mask &
1285	+	ourras->image->blue_mask*scanline[x][BLU]/255;
1286	+	}
1287	+	break;
1288	+	}
1289	+	}
1290	+	}
1291	+
1292	+
1293	+	static void
1294	+	getgrey(void)                   /* get greyscale data */
1295	+	{
1296	+	int     y;
1297		register unsigned char  *dp;
1298		register int    x;
1299	<	/* set gamma correction */
1300	<	setcolrgam(gamcor);
1299	>	/* initialize tone mapping */
1300	>	make_tonemap();
1301		/* read and convert file */
1302		dp = ourdata;
1303		for (y = 0; y < ymax; y++) {
1304	+	getscan(y);
1305	+	add2icon(y, scanline);
1306	+	tmap_colrs(scanline, xmax);
1307	+	if (maxcolors < 256)
1308	+	for (x = 0; x < xmax; x++)
1309	+	*dp++ = ((int32)scanline[x][GRN] *
1310	+	maxcolors + maxcolors/2) >> 8;
1311	+	else
1312	+	for (x = 0; x < xmax; x++)
1313	+	*dp++ = scanline[x][GRN];
1314	+	}
1315	+	for (x = 0; x < maxcolors; x++)
1316	+	clrtab[x][RED] = clrtab[x][GRN] =
1317	+	clrtab[x][BLU] = ((int32)x*256 + 128)/maxcolors;
1318	+	}
1319	+
1320	+
1321	+	static void
1322	+	getmapped(void)                 /* get color-mapped data */
1323	+	{
1324	+	int     y;
1325	+	/* make sure we can do it first */
1326	+	if (fname == NULL)
1327	+	quiterr("cannot map colors from standard input");
1328	+	/* initialize tone mapping */
1329	+	make_tonemap();
1330	+	/* make histogram */
1331	+	if (new_histo((int32)xmax*ymax) == -1)
1332	+	quiterr("cannot initialize histogram");
1333	+	for (y = 0; y < ymax; y++) {
1334		if (getscan(y) < 0)
1335	<	quiterr("seek error in getfull");
706	<	if (scale)
707	<	shiftcolrs(scanline, xmax, scale);
708	<	colrs_gambs(scanline, xmax);
1335	>	break;
1336		add2icon(y, scanline);
1337	<	for (x = 0; x < xmax; x++) {
1338	<	*dp++ = scanline[x][RED];
712	<	*dp++ = scanline[x][GRN];
713	<	*dp++ = scanline[x][BLU];
714	<	}
1337	>	tmap_colrs(scanline, xmax);
1338	>	cnt_colrs(scanline, xmax);
1339		}
1340	+	/* map pixels */
1341	+	if (!new_clrtab(maxcolors))
1342	+	quiterr("cannot create color map");
1343	+	for (y = 0; y < ymax; y++) {
1344	+	getscan(y);
1345	+	tmap_colrs(scanline, xmax);
1346	+	if (dither)
1347	+	dith_colrs(ourdata+y*xmax, scanline, xmax);
1348	+	else
1349	+	map_colrs(ourdata+y*xmax, scanline, xmax);
1350	+	}
1351		}
1352
1353
1354	<	scale_rcolors(xr, sf)                   /* scale color map */
1355	<	register XRASTER        *xr;
1356	<	double  sf;
1354	>	static void
1355	>	scale_rcolors(                  /* scale color map */
1356	>	register XRASTER        *xr,
1357	>	double  sf
1358	>	)
1359		{
1360		register int    i;
1361		long    maxv;
#	Line 744 | Line 1381 | double sf;
1381		}
1382
1383
1384	<	getscan(y)
1385	<	int  y;
1384	>	static int
1385	>	getscan(
1386	>	int  y
1387	>	)
1388		{
1389	+	static int  trunced = -1;               /* truncated file? */
1390	+	skipit:
1391	+	if (trunced >= 0 && y >= trunced) {
1392	+	memset(scanline, '\0', xmax*sizeof(COLR));
1393	+	return(-1);
1394	+	}
1395		if (y != cury) {
1396		if (scanpos == NULL || scanpos[y] == -1)
1397		return(-1);
1398		if (fseek(fin, scanpos[y], 0) == -1)
1399		quiterr("fseek error");
1400		cury = y;
1401	<	} else if (scanpos != NULL)
1401	>	} else if (scanpos != NULL && scanpos[y] == -1)
1402		scanpos[y] = ftell(fin);
1403
1404	<	if (freadcolrs(scanline, xmax, fin) < 0)
1405	<	quiterr("read error");
1406	<
1404	>	if (freadcolrs(scanline, xmax, fin) < 0) {
1405	>	fprintf(stderr, "%s: %s: unfinished picture\n",
1406	>	progname, fname==NULL?"<stdin>":fname);
1407	>	trunced = y;
1408	>	goto skipit;
1409	>	}
1410		cury++;
1411		return(0);
764	–	}
765	–
766	–
767	–	picreadline3(y, l3)                     /* read in 3-byte scanline */
768	–	int  y;
769	–	register rgbpixel  *l3;
770	–	{
771	–	register int    i;
772	–	/* read scanline */
773	–	if (getscan(y) < 0)
774	–	quiterr("cannot seek for picreadline");
775	–	/* convert scanline */
776	–	normcolrs(scanline, xmax, scale);
777	–	add2icon(y, scanline);
778	–	for (i = 0; i < xmax; i++) {
779	–	l3[i].r = scanline[i][RED];
780	–	l3[i].g = scanline[i][GRN];
781	–	l3[i].b = scanline[i][BLU];
782	–	}
783	–	}
784	–
785	–
786	–	picwriteline(y, l)              /* add 8-bit scanline to image */
787	–	int  y;
788	–	pixel  *l;
789	–	{
790	–	bcopy((char *)l, (char *)ourdata+y*xmax, xmax);
791	–	}
792	–
793	–
794	–	picreadcm(map)                  /* do gamma correction */
795	–	colormap  map;
796	–	{
797	–	extern double  pow();
798	–	register int  i, val;
799	–
800	–	for (i = 0; i < 256; i++) {
801	–	val = pow((i+0.5)/256.0, 1.0/gamcor) * 256.0;
802	–	map[0][i] = map[1][i] = map[2][i] = val;
803	–	}
804	–	}
805	–
806	–
807	–	picwritecm(map)                 /* handled elsewhere */
808	–	colormap  map;
809	–	{
810	–	#ifdef DEBUG
811	–	register int i;
812	–
813	–	for (i = 0; i < 256; i++)
814	–	printf("%d %d %d\n", map[0][i],map[1][i],map[2][i]);
815	–	#endif
1412		}

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