ViewVC Help
View File | Revision Log | Show Annotations | Download File | Root Listing
root/radiance/ray/src/px/pcond.h
Revision: 3.12
Committed: Sun Mar 28 20:33:14 2004 UTC (20 years ago) by schorsch
Content type: text/plain
Branch: MAIN
CVS Tags: rad3R6, rad3R6P1
Changes since 3.11: +32 -8 lines
Log Message:
Continued ANSIfication, and other fixes and clarifications.

File Contents

# Content
1 /* RCSid: $Id: pcond.h,v 3.11 2003/07/14 22:24:00 schorsch Exp $ */
2 /*
3 * Header file for picture file conditioning.
4 */
5 #ifndef _RAD_PCOND_H_
6 #define _RAD_PCOND_H_
7
8 #include "standard.h"
9 #include "color.h"
10 #include "view.h"
11
12 #ifdef __cplusplus
13 extern "C" {
14 #endif
15
16 #ifndef ADJ_VEIL
17 #define ADJ_VEIL 0 /* adjust veil to preserve contrast? */
18 #endif
19
20 #define SWNORM 2.26 /* scotopic/photopic ratio for white */
21 #define WHTSEFFICACY (SWNORM*WHTEFFICACY)
22
23 #define BotMesopic 5.62e-3 /* top of scotopic range */
24 #define TopMesopic 5.62 /* bottom of photopic range */
25
26 #define FOVDIA (1.0*PI/180.0) /* foveal diameter (radians) */
27
28 #define HISTRES 100 /* histogram resolution */
29 #define MAXPREHIST 1024 /* maximum precomputed histogram */
30
31 #define LMIN 1e-7 /* minimum visible world luminance */
32 #define LMAX 1e5 /* maximum visible world luminance */
33
34 #define Bl(Lw) log(Lw) /* brightness function */
35 #define Bl1(Lw) (1.0/(Lw)) /* first derivative of Bl(Lw) */
36 #define Lb(Bw) exp(Bw) /* inverse of brightness function */
37 #define Lb1(Bw) exp(Bw) /* first derivative of Lb(Bw) */
38
39 /* Flags of what to do */
40 #define DO_ACUITY 01
41 #define DO_VEIL 02
42 #define DO_HSENS 04
43 #define DO_COLOR 010
44 #define DO_CWEIGHT 020
45 #define DO_FIXHIST 040
46 #define DO_PREHIST 0100
47 #define DO_LINEAR 0200
48
49 #define DO_HUMAN (DO_ACUITY|DO_VEIL|DO_HSENS|DO_COLOR)
50
51 extern int what2do; /* desired adjustments */
52
53 extern double ldmax; /* maximum output luminance */
54 extern double lddyn; /* display dynamic range */
55 extern double Bldmin, Bldmax; /* Bl(ldmax/lddyn) and Bl(ldmax) */
56
57 extern char *progname; /* global argv[0] */
58
59 extern char *infn; /* input file name */
60 extern FILE *infp; /* input stream */
61 extern double (*lumf)(); /* input luminance function */
62 extern double inpexp; /* input exposure value */
63
64 #define plum(clr) ((*lumf)(clr,0)/inpexp)
65 #define slum(clr) ((*lumf)(clr,1)/inpexp)
66
67 #define ldmin (ldmax/lddyn)
68
69 extern COLOR *fovimg; /* foveal (1 degree) averaged image */
70 extern int fvxr, fvyr; /* foveal image resolution */
71 extern float *crfimg; /* contrast reduction factors */
72
73 #define fovscan(y) (fovimg+(y)*fvxr)
74 #define crfscan(y) (crfimg+(y)*fvxr)
75
76 extern double fixfrac; /* histogram share due to fixations */
77 extern short (*fixlst)[2]; /* fixation history list */
78 extern int nfixations; /* number of fixation points */
79
80 extern double bwhist[HISTRES]; /* luminance histogram */
81 extern double histot; /* total count of histogram */
82 extern double bwmin, bwmax; /* histogram limits */
83 extern double bwavg; /* mean brightness */
84
85 #define bwhi(B) (int)(HISTRES*((B)-bwmin)/(bwmax-bwmin))
86
87 extern RGBPRIMP inprims; /* input primaries */
88 extern COLORMAT inrgb2xyz; /* convert input RGB to XYZ */
89
90 extern RGBPRIMP outprims; /* output primaries */
91
92 extern double scalef; /* linear scaling factor */
93
94 extern VIEW ourview; /* picture view */
95 extern double pixaspect; /* pixel aspect ratio */
96 extern RESOLU inpres; /* input picture resolution */
97
98 extern char *mbcalfile; /* macbethcal mapping file */
99 extern char *cwarpfile; /* color warp mapping file */
100
101
102
103 /* defined in pcond.c */
104 extern void syserror(char *s);
105
106 /* defined in pcond2.c */
107 extern double rgblum(COLOR clr, int scotopic); /* compute (scotopic) luminance of RGB color */
108 extern double cielum(COLOR xyz, int scotopic); /* compute (scotopic) luminance of CIE color */
109 extern COLOR *nextscan(void); /* next processed scanline */
110 extern COLOR *firstscan(void); /* first processed scanline */
111
112 /* defined in pcond3.c */
113 extern void getfixations(FILE *fp); /* load fixation history list */
114 extern void gethisto(FILE *fp); /* load precomputed luminance histogram */
115 extern void comphist(void); /* create foveal sampling histogram */
116 extern double htcontrs(double La); /* human contrast sens. func. */
117 extern double clampf(double La); /* histogram clamping function */
118 extern double crfactor(double La); /* contrast reduction factor */
119 extern int mkbrmap(void); /* make dynamic range map */
120 extern void putmapping(FILE *fp); /* put out mapping function */
121 extern void scotscan(COLOR *scan, int xres); /* apply scotopic color sensitivity loss */
122 extern void mapscan(COLOR *scan, int xres); /* apply tone mapping operator to scanline */
123
124 /* defined in pcond4.c */
125 extern void compveil(void); /* compute veiling image */
126 #if ADJ_VEIL
127 extern void adjveil(void); /* adjust veil image */
128 #endif
129 extern void acuscan(COLOR *scln, int y); /* get acuity-sampled scanline */
130 extern void addveil(COLOR *sl, int y); /* add veil to scanline */
131 extern void initacuity(void); /* initialize variable acuity sampling */
132 extern double hacuity(double La); /* human acuity func. (cycles/deg.) */
133
134 #ifdef __cplusplus
135 }
136 #endif
137 #endif /* _RAD_PCOND_H_ */