| 1 |
#ifndef lint
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| 2 |
static const char RCSid[] = "$Id: x11image.c,v 2.72 2006/05/29 17:31:25 greg Exp $";
|
| 3 |
#endif
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| 4 |
/*
|
| 5 |
* x11image.c - driver for X-windows
|
| 6 |
*
|
| 7 |
* 3/1/90
|
| 8 |
*/
|
| 9 |
|
| 10 |
/*
|
| 11 |
* Modified for X11
|
| 12 |
*
|
| 13 |
* January 1990
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| 14 |
*
|
| 15 |
* Anat Grynberg and Greg Ward
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| 16 |
*/
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| 17 |
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| 18 |
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| 19 |
#include "standard.h"
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| 20 |
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| 21 |
#include <string.h>
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| 22 |
#include <signal.h>
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| 23 |
#include <unistd.h>
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| 24 |
#include <sys/types.h>
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| 25 |
#include <sys/wait.h>
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| 26 |
#include <X11/Xlib.h>
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| 27 |
#include <X11/cursorfont.h>
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| 28 |
#include <X11/Xutil.h>
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| 29 |
#include <X11/Xatom.h>
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| 30 |
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| 31 |
#include "color.h"
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| 32 |
#include "tonemap.h"
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| 33 |
#include "clrtab.h"
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| 34 |
#include "view.h"
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| 35 |
#include "x11raster.h"
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| 36 |
#include "random.h"
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| 37 |
|
| 38 |
#define FONTNAME "8x13" /* text font we'll use */
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| 39 |
|
| 40 |
#define CTRL(c) ((c)-'@')
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| 41 |
|
| 42 |
#define BORWIDTH 5 /* border width */
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| 43 |
|
| 44 |
#define ICONSIZ (8*10) /* maximum icon dimension (even 8) */
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| 45 |
|
| 46 |
#define FIXWEIGHT 20 /* weight to add for fixation points */
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| 47 |
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| 48 |
#define ourscreen DefaultScreen(thedisplay)
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| 49 |
#define ourroot RootWindow(thedisplay,ourscreen)
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| 50 |
|
| 51 |
#define revline(x0,y0,x1,y1) XDrawLine(thedisplay,wind,revgc,x0,y0,x1,y1)
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| 52 |
|
| 53 |
#define redraw(x,y,w,h) patch_raster(wind,(x)-xoff,(y)-yoff,x,y,w,h,ourras)
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| 54 |
|
| 55 |
double gamcor = 2.2; /* gamma correction */
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| 56 |
char *gamstr = NULL; /* gamma value override */
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| 57 |
|
| 58 |
int dither = 1; /* dither colors? */
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| 59 |
int fast = 0; /* keep picture in Pixmap? */
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| 60 |
|
| 61 |
char *dispname = NULL; /* our display name */
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| 62 |
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| 63 |
Window wind = 0; /* our output window */
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| 64 |
unsigned long ourblack=0, ourwhite=1; /* black and white for this visual */
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| 65 |
int maxcolors = 0; /* maximum colors */
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| 66 |
int greyscale = 0; /* in grey */
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| 67 |
|
| 68 |
int scale = 0; /* scalefactor; power of two */
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| 69 |
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| 70 |
int xoff = 0; /* x image offset */
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| 71 |
int yoff = 0; /* y image offset */
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| 72 |
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| 73 |
int parent = 0; /* number of children, -1 if child */
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| 74 |
int sequential = 0; /* display images in sequence */
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| 75 |
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| 76 |
char *tout = "od"; /* output of 't' command */
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| 77 |
int tinterv = 0; /* interval between mouse reports */
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| 78 |
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| 79 |
int tmflags = TM_F_LINEAR; /* tone mapping flags */
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| 80 |
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| 81 |
VIEW ourview = STDVIEW; /* image view parameters */
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| 82 |
int gotview = 0; /* got parameters from file */
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| 83 |
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| 84 |
COLR *scanline; /* scan line buffer */
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| 85 |
TMbright *lscan; /* encoded luminance scanline */
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| 86 |
BYTE *cscan; /* encoded chroma scanline */
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| 87 |
BYTE *pscan; /* compute pixel scanline */
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| 88 |
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| 89 |
RESOLU inpres; /* input resolution and ordering */
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| 90 |
int xmax, ymax; /* picture dimensions */
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| 91 |
int width, height; /* window size */
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| 92 |
char *fname = NULL; /* input file name */
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| 93 |
FILE *fin = NULL; /* input file */
|
| 94 |
long *scanpos = NULL; /* scan line positions in file */
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| 95 |
int cury = 0; /* current scan location */
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| 96 |
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| 97 |
double exposure = 1.0; /* exposure compensation used */
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| 98 |
|
| 99 |
int wrongformat = 0; /* input in another format? */
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| 100 |
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| 101 |
TMstruct *tmGlobal; /* base tone-mapping */
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| 102 |
TMstruct *tmCurrent; /* curren tone-mapping */
|
| 103 |
|
| 104 |
GC ourgc; /* standard graphics context */
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| 105 |
GC revgc; /* graphics context with GXinvert */
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| 106 |
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| 107 |
int *ourrank; /* our visual class ranking */
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XVisualInfo ourvis; /* our visual */
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| 109 |
XRASTER *ourras; /* our stored image */
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unsigned char *ourdata; /* our image data */
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| 112 |
struct {
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| 113 |
int xmin, ymin, xsiz, ysiz;
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| 114 |
} bbox = {0, 0, 0, 0}; /* current bbox */
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| 116 |
char *geometry = NULL; /* geometry specification */
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| 117 |
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| 118 |
char icondata[ICONSIZ*ICONSIZ/8]; /* icon bitmap data */
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| 119 |
int iconwidth = 0, iconheight = 0;
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| 121 |
char *progname;
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| 122 |
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| 123 |
char errmsg[128];
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| 124 |
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| 125 |
BYTE clrtab[256][3]; /* global color map */
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| 128 |
Display *thedisplay;
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| 129 |
Atom closedownAtom, wmProtocolsAtom;
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| 131 |
int sigrecv;
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| 132 |
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| 133 |
void onsig(int i) { sigrecv++; }
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| 135 |
typedef void doboxf_t(COLR *scn, int n, void *);
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| 137 |
static gethfunc headline;
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| 138 |
static void init(int argc, char **argv);
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| 139 |
static void quiterr(char *err);
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| 140 |
static int viscmp(XVisualInfo *v1, XVisualInfo *v2);
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| 141 |
static void getbestvis(void);
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| 142 |
static void getras(void);
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| 143 |
static void getevent(void);
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| 144 |
static int traceray(int xpos, int ypos);
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| 145 |
static int docom(XKeyPressedEvent *ekey);
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| 146 |
static void moveimage(XButtonPressedEvent *ebut);
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| 147 |
static void getbox(XButtonPressedEvent *ebut);
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| 148 |
static void trackrays(XButtonPressedEvent *ebut);
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| 149 |
static void revbox(int x0, int y0, int x1, int y1);
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| 150 |
static doboxf_t colavg;
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| 151 |
static doboxf_t addfix;
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| 152 |
static int avgbox(COLOR cavg);
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| 153 |
static int dobox(doboxf_t *f, void *p);
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| 154 |
static void make_tonemap(void);
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| 155 |
static void tmap_colrs(COLR *scn, int len);
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| 156 |
static void getmono(void);
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| 157 |
static void add2icon(int y, COLR *scan);
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| 158 |
static void getfull(void);
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| 159 |
static void getgrey(void);
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| 160 |
static void getmapped(void);
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static void scale_rcolors(XRASTER *xr, double sf);
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static int getscan(int y);
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| 163 |
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| 164 |
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int
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main(int argc, char *argv[])
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{
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| 168 |
int i;
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| 169 |
int pid;
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| 170 |
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progname = argv[0];
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fin = stdin;
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for (i = 1; i < argc; i++)
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| 175 |
if (argv[i][0] == '-')
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| 176 |
switch (argv[i][1]) {
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| 177 |
case 'c': /* number of colors */
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maxcolors = atoi(argv[++i]);
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break;
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| 180 |
case 'b': /* greyscale only */
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greyscale = !greyscale;
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break;
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case 'm': /* monochrome */
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greyscale = 1;
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maxcolors = 2;
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break;
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| 187 |
case 'd': /* display or dither */
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| 188 |
if (argv[i][2] == 'i')
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dispname = argv[++i];
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else
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dither = !dither;
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break;
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case 'f': /* save pixmap */
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fast = !fast;
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break;
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| 196 |
case 's': /* one at a time */
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sequential = !sequential;
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break;
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| 199 |
case 'o': /* 't' output */
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tout = argv[i]+2;
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break;
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case 't': /* msec interval */
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tinterv = atoi(argv[++i]);
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break;
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case 'e': /* exposure comp. */
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i++;
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if (argv[i][0] == 'a') {
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tmflags = TM_F_CAMERA;
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break;
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}
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if (argv[i][0] == 'h') {
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tmflags = TM_F_HUMAN;
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break;
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}
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if (argv[i][0] != '+' && argv[i][0] != '-')
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goto userr;
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scale = atoi(argv[i]);
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break;
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case 'g': /* gamma comp. */
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if (argv[i][2] == 'e')
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geometry = argv[++i];
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else
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gamstr = argv[++i];
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break;
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default:
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goto userr;
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}
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else if (argv[i][0] == '=')
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geometry = argv[i];
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else
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break;
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if (i > argc)
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goto userr;
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while (i < argc-1) {
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sigrecv = 0;
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signal(SIGCONT, onsig);
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if ((pid=fork()) == 0) { /* a child for each picture */
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parent = -1;
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break;
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}
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if (pid < 0)
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quiterr("fork failed");
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parent++;
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while (!sigrecv)
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pause(); /* wait for wake-up call */
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i++;
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}
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if (i < argc) { /* open picture file */
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fname = argv[i];
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fin = fopen(fname, "r");
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if (fin == NULL)
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quiterr("cannot open picture file");
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}
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/* get header */
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getheader(fin, headline, NULL);
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/* get picture dimensions */
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if (wrongformat || !fgetsresolu(&inpres, fin))
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quiterr("bad picture format");
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xmax = scanlen(&inpres);
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ymax = numscans(&inpres);
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/* set view parameters */
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if (gotview && setview(&ourview) != NULL)
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gotview = 0;
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if ((scanline = (COLR *)malloc(xmax*sizeof(COLR))) == NULL)
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quiterr("out of memory");
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| 267 |
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init(argc, argv); /* get file and open window */
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for ( ; ; )
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getevent(); /* main loop */
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userr:
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fprintf(stderr,
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"Usage: %s [-di disp][[-ge] spec][-b][-m][-d][-f][-c nclrs][-e spec][-g gamcor][-s][-ospec][-t intvl] hdr ..\n",
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progname);
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exit(1);
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}
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| 279 |
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static int
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headline( /* get relevant info from header */
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| 282 |
char *s,
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| 283 |
void *p
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| 284 |
)
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| 285 |
{
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| 286 |
char fmt[32];
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| 287 |
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| 288 |
if (isexpos(s))
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exposure *= exposval(s);
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| 290 |
else if (formatval(fmt, s))
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| 291 |
wrongformat = strcmp(fmt, COLRFMT);
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| 292 |
else if (isview(s) && sscanview(&ourview, s) > 0)
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| 293 |
gotview++;
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| 294 |
return(0);
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| 295 |
}
|
| 296 |
|
| 297 |
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| 298 |
static void
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| 299 |
init( /* get data and open window */
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| 300 |
int argc,
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| 301 |
char **argv
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| 302 |
)
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| 303 |
{
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| 304 |
XSetWindowAttributes ourwinattr;
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| 305 |
XClassHint xclshints;
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| 306 |
XWMHints xwmhints;
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| 307 |
XSizeHints xszhints;
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| 308 |
XTextProperty windowName, iconName;
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| 309 |
XGCValues xgcv;
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| 310 |
char *name;
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| 311 |
register int i;
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| 312 |
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| 313 |
if (fname != NULL) {
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| 314 |
scanpos = (long *)malloc(ymax*sizeof(long));
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| 315 |
if (scanpos == NULL)
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| 316 |
quiterr("out of memory");
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| 317 |
for (i = 0; i < ymax; i++)
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| 318 |
scanpos[i] = -1;
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| 319 |
name = fname;
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| 320 |
} else
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| 321 |
name = progname;
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| 322 |
/* remove directory prefix from name */
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| 323 |
for (i = strlen(name); i-- > 0; )
|
| 324 |
if (name[i] == '/')
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| 325 |
break;
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| 326 |
name += i+1;
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| 327 |
if ((thedisplay = XOpenDisplay(dispname)) == NULL)
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| 328 |
quiterr("cannot open display");
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| 329 |
/* set gamma value */
|
| 330 |
if (gamstr == NULL) /* get it from the X server */
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| 331 |
gamstr = XGetDefault(thedisplay, "radiance", "gamma");
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| 332 |
if (gamstr == NULL) /* get it from the environment */
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| 333 |
gamstr = getenv("DISPLAY_GAMMA");
|
| 334 |
if (gamstr != NULL)
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| 335 |
gamcor = atof(gamstr);
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| 336 |
/* get best visual for default screen */
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| 337 |
getbestvis();
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| 338 |
/* store image */
|
| 339 |
getras();
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| 340 |
/* get size and position */
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| 341 |
xszhints.flags = 0;
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| 342 |
xszhints.width = xmax; xszhints.height = ymax;
|
| 343 |
if (geometry != NULL) {
|
| 344 |
i = XParseGeometry(geometry, &xszhints.x, &xszhints.y,
|
| 345 |
(unsigned *)&xszhints.width,
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| 346 |
(unsigned *)&xszhints.height);
|
| 347 |
if ((i&(WidthValue|HeightValue)) == (WidthValue|HeightValue))
|
| 348 |
xszhints.flags |= USSize;
|
| 349 |
else
|
| 350 |
xszhints.flags |= PSize;
|
| 351 |
if ((i&(XValue|YValue)) == (XValue|YValue)) {
|
| 352 |
xszhints.flags |= USPosition;
|
| 353 |
if (i & XNegative)
|
| 354 |
xszhints.x += DisplayWidth(thedisplay,
|
| 355 |
ourscreen)-1-xszhints.width-2*BORWIDTH;
|
| 356 |
if (i & YNegative)
|
| 357 |
xszhints.y += DisplayHeight(thedisplay,
|
| 358 |
ourscreen)-1-xszhints.height-2*BORWIDTH;
|
| 359 |
}
|
| 360 |
}
|
| 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 |
|
| 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);
|
| 413 |
} /* end of init */
|
| 414 |
|
| 415 |
|
| 416 |
static void
|
| 417 |
quiterr( /* print message and exit */
|
| 418 |
char *err
|
| 419 |
)
|
| 420 |
{
|
| 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(es);
|
| 437 |
}
|
| 438 |
|
| 439 |
|
| 440 |
static int
|
| 441 |
viscmp( /* compare visual to see which is better, descending */
|
| 442 |
register XVisualInfo *v1,
|
| 443 |
register XVisualInfo *v2
|
| 444 |
)
|
| 445 |
{
|
| 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 |
static void
|
| 485 |
getbestvis(void) /* get the best visual for this screen */
|
| 486 |
{
|
| 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 |
static void
|
| 568 |
getras(void) /* get raster file */
|
| 569 |
{
|
| 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, &ourvis, 1, (char *)ourdata,
|
| 575 |
xmax, ymax, 8);
|
| 576 |
if (ourras == NULL)
|
| 577 |
goto fail;
|
| 578 |
getmono();
|
| 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, &ourvis, datsiz*8,
|
| 585 |
(char *)ourdata, xmax, ymax, datsiz*8);
|
| 586 |
if (ourras == NULL)
|
| 587 |
goto fail;
|
| 588 |
getfull();
|
| 589 |
} else {
|
| 590 |
ourdata = (unsigned char *)malloc(xmax*ymax);
|
| 591 |
if (ourdata == NULL)
|
| 592 |
goto fail;
|
| 593 |
ourras = make_raster(thedisplay, &ourvis, 8, (char *)ourdata,
|
| 594 |
xmax, ymax, 8);
|
| 595 |
if (ourras == NULL)
|
| 596 |
goto fail;
|
| 597 |
if (greyscale)
|
| 598 |
getgrey();
|
| 599 |
else
|
| 600 |
getmapped();
|
| 601 |
if (ourvis.class != StaticGray && !init_rcolors(ourras,clrtab))
|
| 602 |
goto fail;
|
| 603 |
}
|
| 604 |
return;
|
| 605 |
fail:
|
| 606 |
quiterr("could not create raster image");
|
| 607 |
}
|
| 608 |
|
| 609 |
|
| 610 |
static void
|
| 611 |
getevent(void) /* process the next event */
|
| 612 |
{
|
| 613 |
XEvent xev;
|
| 614 |
|
| 615 |
XNextEvent(thedisplay, &xev);
|
| 616 |
switch ((int)xev.type) {
|
| 617 |
case KeyPress:
|
| 618 |
docom(&xev.xkey);
|
| 619 |
break;
|
| 620 |
case ConfigureNotify:
|
| 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, wind);
|
| 628 |
if ((!sequential) & (parent < 0) & (sigrecv == 0)) {
|
| 629 |
kill(getppid(), SIGCONT);
|
| 630 |
sigrecv--;
|
| 631 |
}
|
| 632 |
break;
|
| 633 |
case UnmapNotify:
|
| 634 |
if (!fast)
|
| 635 |
unmap_rcolors(ourras);
|
| 636 |
break;
|
| 637 |
case Expose:
|
| 638 |
redraw(xev.xexpose.x, xev.xexpose.y,
|
| 639 |
xev.xexpose.width, xev.xexpose.height);
|
| 640 |
break;
|
| 641 |
case ButtonPress:
|
| 642 |
if (xev.xbutton.state & (ShiftMask|ControlMask))
|
| 643 |
moveimage(&xev.xbutton);
|
| 644 |
else
|
| 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 |
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 |
RREAL hv[2];
|
| 723 |
|
| 724 |
n = XLookupString(ekey, buf, sizeof(buf), NULL, NULL);
|
| 725 |
if (n == 0)
|
| 726 |
return(0);
|
| 727 |
com = buf[0];
|
| 728 |
switch (com) { /* interpret command */
|
| 729 |
case 'q':
|
| 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))
|
| 738 |
return(-1);
|
| 739 |
switch (com) {
|
| 740 |
case '\n':
|
| 741 |
case '\r': /* radiance */
|
| 742 |
sprintf(buf, "%.3f", intens(cval)/exposure);
|
| 743 |
break;
|
| 744 |
case 'l': /* luminance */
|
| 745 |
sprintf(buf, "%.1fL", luminance(cval)/exposure);
|
| 746 |
break;
|
| 747 |
case 'c': /* color */
|
| 748 |
comp = pow(2.0, (double)scale);
|
| 749 |
sprintf(buf, "(%.2f,%.2f,%.2f)",
|
| 750 |
colval(cval,RED)*comp,
|
| 751 |
colval(cval,GRN)*comp,
|
| 752 |
colval(cval,BLU)*comp);
|
| 753 |
break;
|
| 754 |
}
|
| 755 |
XDrawImageString(thedisplay, wind, ourgc,
|
| 756 |
bbox.xmin, bbox.ymin+bbox.ysiz, buf, strlen(buf));
|
| 757 |
return(0);
|
| 758 |
case 'i': /* identify (contour) */
|
| 759 |
if (ourras->pixels == NULL)
|
| 760 |
return(-1);
|
| 761 |
n = ourdata[ekey->x-xoff+xmax*(ekey->y-yoff)];
|
| 762 |
n = ourras->pmap[n];
|
| 763 |
cvx.pixel = ourras->cdefs[n].pixel;
|
| 764 |
cvx.red = random() & 65535;
|
| 765 |
cvx.green = random() & 65535;
|
| 766 |
cvx.blue = random() & 65535;
|
| 767 |
cvx.flags = DoRed|DoGreen|DoBlue;
|
| 768 |
XStoreColor(thedisplay, ourras->cmap, &cvx);
|
| 769 |
return(0);
|
| 770 |
case 'p': /* position */
|
| 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 |
return(traceray(ekey->x, ekey->y));
|
| 779 |
case 'a': /* auto exposure */
|
| 780 |
if (fname == NULL)
|
| 781 |
return(-1);
|
| 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 |
tmflags = TM_F_HUMAN;
|
| 789 |
strcpy(buf, "human exposure...");
|
| 790 |
goto remap;
|
| 791 |
case '=': /* adjust exposure */
|
| 792 |
case '@': /* adaptation level */
|
| 793 |
if (!avgbox(cval))
|
| 794 |
return(-1);
|
| 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 |
bbox.xmin, bbox.ymin+bbox.ysiz, buf, strlen(buf));
|
| 819 |
XFlush(thedisplay);
|
| 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'):
|
| 826 |
unmap_rcolors(ourras);
|
| 827 |
XClearWindow(thedisplay, wind);
|
| 828 |
map_rcolors(ourras, wind);
|
| 829 |
if (fast)
|
| 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(bbox.xmin, bbox.ymin, bbox.xsiz, bbox.ysiz);
|
| 850 |
return(0);
|
| 851 |
default:
|
| 852 |
XBell(thedisplay, 0);
|
| 853 |
return(-1);
|
| 854 |
}
|
| 855 |
}
|
| 856 |
|
| 857 |
|
| 858 |
static void
|
| 859 |
moveimage( /* shift the image */
|
| 860 |
XButtonPressedEvent *ebut
|
| 861 |
)
|
| 862 |
{
|
| 863 |
XEvent e;
|
| 864 |
int mxo, myo;
|
| 865 |
|
| 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);
|
| 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.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 |
static void
|
| 886 |
getbox( /* get new bbox */
|
| 887 |
XButtonPressedEvent *ebut
|
| 888 |
)
|
| 889 |
{
|
| 890 |
XEvent e;
|
| 891 |
|
| 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 |
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 |
bbox.xsiz = ebut->x - bbox.xmin + 1;
|
| 905 |
}
|
| 906 |
if (bbox.ymin > ebut->y) {
|
| 907 |
bbox.ysiz = bbox.ymin - ebut->y + 1;
|
| 908 |
bbox.ymin = ebut->y;
|
| 909 |
} else {
|
| 910 |
bbox.ysiz = ebut->y - bbox.ymin + 1;
|
| 911 |
}
|
| 912 |
}
|
| 913 |
|
| 914 |
|
| 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);
|
| 947 |
revline(x1, y0, x1, y1);
|
| 948 |
}
|
| 949 |
|
| 950 |
|
| 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;
|
| 994 |
|
| 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(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(0);
|
| 1011 |
for (y = top; y < bottom; y++) {
|
| 1012 |
if (getscan(y) == -1)
|
| 1013 |
return(-1);
|
| 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 = (BYTE *)malloc(sizeof(BYTE)*xmax)) == NULL)
|
| 1064 |
goto memerr;
|
| 1065 |
} else if ((pscan=cscan = (BYTE *)malloc(3*sizeof(BYTE)*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 |
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 |
static void
|
| 1098 |
tmap_colrs( /* apply tone mapping to scanline */
|
| 1099 |
register COLR *scn,
|
| 1100 |
int len
|
| 1101 |
)
|
| 1102 |
{
|
| 1103 |
register BYTE *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, 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 |
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 |
err /= 3;
|
| 1164 |
cerr[x] = err + errp;
|
| 1165 |
}
|
| 1166 |
}
|
| 1167 |
free((void *)cerr);
|
| 1168 |
}
|
| 1169 |
|
| 1170 |
|
| 1171 |
static void
|
| 1172 |
add2icon( /* add a scanline to our icon data */
|
| 1173 |
int y,
|
| 1174 |
COLR *scan
|
| 1175 |
)
|
| 1176 |
{
|
| 1177 |
static short cerr[ICONSIZ];
|
| 1178 |
static int ynext;
|
| 1179 |
static char *dp;
|
| 1180 |
COLR clr;
|
| 1181 |
register int err;
|
| 1182 |
register int x, ti;
|
| 1183 |
int errp;
|
| 1184 |
|
| 1185 |
if (iconheight == 0) { /* initialize */
|
| 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 (y < ynext*ymax/iconheight) /* skip this one */
|
| 1204 |
return;
|
| 1205 |
err = 0;
|
| 1206 |
for (x = 0; x < iconwidth; x++) {
|
| 1207 |
if (!(x&7))
|
| 1208 |
*++dp = 0;
|
| 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 |
err /= 3;
|
| 1219 |
cerr[x] = err + errp;
|
| 1220 |
}
|
| 1221 |
ynext++;
|
| 1222 |
}
|
| 1223 |
|
| 1224 |
|
| 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 |
/* 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 |
break;
|
| 1336 |
add2icon(y, scanline);
|
| 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 |
static void
|
| 1355 |
scale_rcolors( /* scale color map */
|
| 1356 |
register XRASTER *xr,
|
| 1357 |
double sf
|
| 1358 |
)
|
| 1359 |
{
|
| 1360 |
register int i;
|
| 1361 |
long maxv;
|
| 1362 |
|
| 1363 |
if (xr->pixels == NULL)
|
| 1364 |
return;
|
| 1365 |
|
| 1366 |
sf = pow(sf, 1.0/gamcor);
|
| 1367 |
maxv = 65535/sf;
|
| 1368 |
|
| 1369 |
for (i = xr->ncolors; i--; ) {
|
| 1370 |
xr->cdefs[i].red = xr->cdefs[i].red > maxv ?
|
| 1371 |
65535 :
|
| 1372 |
xr->cdefs[i].red * sf;
|
| 1373 |
xr->cdefs[i].green = xr->cdefs[i].green > maxv ?
|
| 1374 |
65535 :
|
| 1375 |
xr->cdefs[i].green * sf;
|
| 1376 |
xr->cdefs[i].blue = xr->cdefs[i].blue > maxv ?
|
| 1377 |
65535 :
|
| 1378 |
xr->cdefs[i].blue * sf;
|
| 1379 |
}
|
| 1380 |
XStoreColors(thedisplay, xr->cmap, xr->cdefs, xr->ncolors);
|
| 1381 |
}
|
| 1382 |
|
| 1383 |
|
| 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 && scanpos[y] == -1)
|
| 1402 |
scanpos[y] = ftell(fin);
|
| 1403 |
|
| 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);
|
| 1412 |
}
|
