src/common/tmprivat.h

/* RCSid $Id: tmprivat.h,v 3.24 2011/05/20 02:06:38 greg Exp $ */
/*
 * Private header file for tone mapping routines.
 */
#ifndef _RAD_TMPRIVAT_H_
#define _RAD_TMPRIVAT_H_

#ifndef MEM_PTR
#define MEM_PTR         void *
#endif
#include        "color.h"
#include        "tonemap.h"

#ifdef __cplusplus
extern "C" {
#endif

                                /* required constants */
#ifndef M_LN2
#define M_LN2           0.69314718055994530942
#endif
#ifndef M_LN10
#define M_LN10          2.30258509299404568402
#endif
                                /* minimum values and defaults */
#define MINGAM          0.75
#define DEFGAM          2.2
#define MINLDDYN        2.
#define DEFLDDYN        100.
#define MINLDMAX        1.
#define DEFLDMAX        100.

#define BRT2SCALE(l2)   (int)(M_LN2*TM_BRTSCALE*(l2) + .5 - ((l2) < 0))

#define HISTEP          16              /* steps in BRTSCALE for each bin */

#define MINBRT          (-16*TM_BRTSCALE)       /* minimum usable brightness */
#define MINLUM          (1.125352e-7)           /* tmLuminance(MINBRT) */

#define HISTI(li)       (((li)-MINBRT)/HISTEP)
#define HISTV(i)        (MINBRT + HISTEP/2 + (i)*HISTEP)

#define LMESLOWER       (5.62e-3)               /* lower mesopic limit */
#define LMESUPPER       (5.62)                  /* upper mesopic limit */
#define BMESLOWER       ((int)(-5.18*TM_BRTSCALE-.5))
#define BMESUPPER       ((int)(1.73*TM_BRTSCALE+.5))

                                                /* approximate scotopic lum. */
#define SCO_rf          0.062
#define SCO_gf          0.608
#define SCO_bf          0.330
#define scotlum(c)      (SCO_rf*(c)[RED] + SCO_gf*(c)[GRN] + SCO_bf*(c)[BLU])
#define normscot(c)     ( (     (int32)(SCO_rf*256.+.5)*(c)[RED] + \
                                (int32)(SCO_gf*256.+.5)*(c)[GRN] + \
                                (int32)(SCO_bf*256.+.5)*(c)[BLU]        ) >> 8 )

extern int      tmNewMap(TMstruct *tms);        /* allocate new tone-mapping */

extern int      tmErrorReturn(const char *, TMstruct *, int);

                                                /* lookup for mesopic scaling */
extern uby8     tmMesofact[BMESUPPER-BMESLOWER];

extern void     tmMkMesofact(void);                     /* build tmMesofact */

#define returnErr(code) return(tmErrorReturn(funcName,tms,code))
#define returnOK        return(TM_E_OK)

#define FEQ(a,b)        ((a) < (b)+1e-5 && (b) < (a)+1e-5)

#define PRIMEQ(p1,p2)   (FEQ((p1)[0][0],(p2)[0][0])&&FEQ((p1)[0][1],(p2)[0][1])\
                        &&FEQ((p1)[1][0],(p2)[1][0])&&FEQ((p1)[1][1],(p2)[1][1])\
                        &&FEQ((p1)[2][0],(p2)[2][0])&&FEQ((p1)[2][1],(p2)[2][1])\
                        &&FEQ((p1)[3][0],(p2)[3][0])&&FEQ((p1)[3][1],(p2)[3][1]))

#ifdef __cplusplus
}
#endif
#endif /* _RAD_TMPRIVAT_H_ */

Revision:	3.25
Committed:	Wed Apr 7 21:13:52 2021 UTC (4 years, 6 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 3.24:	+2 -2 lines
Log Message:	perf: changed default dynamic range from 32 to 100 to reflect modern displays
#	User	Rev	Content
1	greg	3.25	/* RCSid $Id: tmprivat.h,v 3.24 2011/05/20 02:06:38 greg Exp $ */
2	greg	3.1	/*
3			* Private header file for tone mapping routines.
4			*/
5	schorsch	3.8	#ifndef _RAD_TMPRIVAT_H_
6			#define _RAD_TMPRIVAT_H_
7	greg	3.6
8	greg	3.4	#ifndef MEM_PTR
9	greg	3.6	#define MEM_PTR void *
10	greg	3.4	#endif
11	gwlarson	3.5	#include "color.h"
12	greg	3.1	#include "tonemap.h"
13	schorsch	3.12
14			#ifdef __cplusplus
15			extern "C" {
16			#endif
17	greg	3.2
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	greg	3.1	/* minimum values and defaults */
26			#define MINGAM 0.75
27			#define DEFGAM 2.2
28			#define MINLDDYN 2.
29	greg	3.25	#define DEFLDDYN 100.
30	greg	3.1	#define MINLDMAX 1.
31			#define DEFLDMAX 100.
32
33	greg	3.23	#define BRT2SCALE(l2) (int)(M_LN2TM_BRTSCALE(l2) + .5 - ((l2) < 0))
34	greg	3.1
35	greg	3.22	#define HISTEP 16 /* steps in BRTSCALE for each bin */
36	greg	3.1
37			#define MINBRT (-16TM_BRTSCALE) / minimum usable brightness */
38			#define MINLUM (1.125352e-7) /* tmLuminance(MINBRT) */
39
40	greg	3.16	#define HISTI(li) (((li)-MINBRT)/HISTEP)
41	greg	3.17	#define HISTV(i) (MINBRT + HISTEP/2 + (i)*HISTEP)
42	greg	3.16
43	greg	3.1	#define LMESLOWER (5.62e-3) /* lower mesopic limit */
44	greg	3.3	#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	greg	3.21
48	greg	3.1	/* 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	greg	3.9	#define normscot(c) ( ( (int32)(SCO_rf256.+.5)(c)[RED] + \
54			(int32)(SCO_gf256.+.5)(c)[GRN] + \
55			(int32)(SCO_bf256.+.5)(c)[BLU] ) >> 8 )
56	greg	3.1
57	greg	3.18	extern int tmNewMap(TMstruct tms); / allocate new tone-mapping */
58
59	greg	3.15	extern int tmErrorReturn(const char , TMstruct , int);
60	greg	3.1
61	greg	3.6	/* lookup for mesopic scaling */
62	greg	3.24	extern uby8 tmMesofact[BMESUPPER-BMESLOWER];
63	greg	3.6
64	schorsch	3.13	extern void tmMkMesofact(void); /* build tmMesofact */
65	greg	3.6
66	greg	3.14	#define returnErr(code) return(tmErrorReturn(funcName,tms,code))
67	greg	3.1	#define returnOK return(TM_E_OK)
68
69			#define FEQ(a,b) ((a) < (b)+1e-5 && (b) < (a)+1e-5)
70
71	greg	3.6	#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	schorsch	3.8	#endif /* _RAD_TMPRIVAT_H_ */
80