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root/radiance/ray/src/common/tmprivat.h
Revision: 3.24
Committed: Fri May 20 02:06:38 2011 UTC (12 years, 10 months ago) by greg
Content type: text/plain
Branch: MAIN
CVS Tags: rad5R2, rad4R2P2, rad5R0, rad5R1, rad4R2, rad4R1, rad4R2P1, rad5R3
Changes since 3.23: +2 -2 lines
Log Message:
Changed every instance of BYTE to uby8 to avoid conflicts

File Contents

# Content
1 /* RCSid $Id: tmprivat.h,v 3.23 2011/03/07 20:49:19 greg Exp $ */
2 /*
3 * Private header file for tone mapping routines.
4 */
5 #ifndef _RAD_TMPRIVAT_H_
6 #define _RAD_TMPRIVAT_H_
7
8 #ifndef MEM_PTR
9 #define MEM_PTR void *
10 #endif
11 #include "color.h"
12 #include "tonemap.h"
13
14 #ifdef __cplusplus
15 extern "C" {
16 #endif
17
18 /* required constants */
19 #ifndef M_LN2
20 #define M_LN2 0.69314718055994530942
21 #endif
22 #ifndef M_LN10
23 #define M_LN10 2.30258509299404568402
24 #endif
25 /* minimum values and defaults */
26 #define MINGAM 0.75
27 #define DEFGAM 2.2
28 #define MINLDDYN 2.
29 #define DEFLDDYN 32.
30 #define MINLDMAX 1.
31 #define DEFLDMAX 100.
32
33 #define BRT2SCALE(l2) (int)(M_LN2*TM_BRTSCALE*(l2) + .5 - ((l2) < 0))
34
35 #define HISTEP 16 /* steps in BRTSCALE for each bin */
36
37 #define MINBRT (-16*TM_BRTSCALE) /* minimum usable brightness */
38 #define MINLUM (1.125352e-7) /* tmLuminance(MINBRT) */
39
40 #define HISTI(li) (((li)-MINBRT)/HISTEP)
41 #define HISTV(i) (MINBRT + HISTEP/2 + (i)*HISTEP)
42
43 #define LMESLOWER (5.62e-3) /* lower mesopic limit */
44 #define LMESUPPER (5.62) /* upper mesopic limit */
45 #define BMESLOWER ((int)(-5.18*TM_BRTSCALE-.5))
46 #define BMESUPPER ((int)(1.73*TM_BRTSCALE+.5))
47
48 /* approximate scotopic lum. */
49 #define SCO_rf 0.062
50 #define SCO_gf 0.608
51 #define SCO_bf 0.330
52 #define scotlum(c) (SCO_rf*(c)[RED] + SCO_gf*(c)[GRN] + SCO_bf*(c)[BLU])
53 #define normscot(c) ( ( (int32)(SCO_rf*256.+.5)*(c)[RED] + \
54 (int32)(SCO_gf*256.+.5)*(c)[GRN] + \
55 (int32)(SCO_bf*256.+.5)*(c)[BLU] ) >> 8 )
56
57 extern int tmNewMap(TMstruct *tms); /* allocate new tone-mapping */
58
59 extern int tmErrorReturn(const char *, TMstruct *, int);
60
61 /* lookup for mesopic scaling */
62 extern uby8 tmMesofact[BMESUPPER-BMESLOWER];
63
64 extern void tmMkMesofact(void); /* build tmMesofact */
65
66 #define returnErr(code) return(tmErrorReturn(funcName,tms,code))
67 #define returnOK return(TM_E_OK)
68
69 #define FEQ(a,b) ((a) < (b)+1e-5 && (b) < (a)+1e-5)
70
71 #define PRIMEQ(p1,p2) (FEQ((p1)[0][0],(p2)[0][0])&&FEQ((p1)[0][1],(p2)[0][1])\
72 &&FEQ((p1)[1][0],(p2)[1][0])&&FEQ((p1)[1][1],(p2)[1][1])\
73 &&FEQ((p1)[2][0],(p2)[2][0])&&FEQ((p1)[2][1],(p2)[2][1])\
74 &&FEQ((p1)[3][0],(p2)[3][0])&&FEQ((p1)[3][1],(p2)[3][1]))
75
76 #ifdef __cplusplus
77 }
78 #endif
79 #endif /* _RAD_TMPRIVAT_H_ */
80