| 1 |
greg |
3.26 |
/* RCSid $Id: tmprivat.h,v 3.25 2021/04/07 21:13:52 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 |
gwlarson |
3.5 |
#include "color.h" |
| 9 |
greg |
3.1 |
#include "tonemap.h" |
| 10 |
schorsch |
3.12 |
|
| 11 |
|
|
#ifdef __cplusplus |
| 12 |
|
|
extern "C" { |
| 13 |
|
|
#endif |
| 14 |
greg |
3.2 |
|
| 15 |
|
|
/* required constants */ |
| 16 |
|
|
#ifndef M_LN2 |
| 17 |
|
|
#define M_LN2 0.69314718055994530942 |
| 18 |
|
|
#endif |
| 19 |
|
|
#ifndef M_LN10 |
| 20 |
|
|
#define M_LN10 2.30258509299404568402 |
| 21 |
|
|
#endif |
| 22 |
greg |
3.1 |
/* minimum values and defaults */ |
| 23 |
|
|
#define MINGAM 0.75 |
| 24 |
|
|
#define DEFGAM 2.2 |
| 25 |
|
|
#define MINLDDYN 2. |
| 26 |
greg |
3.25 |
#define DEFLDDYN 100. |
| 27 |
greg |
3.1 |
#define MINLDMAX 1. |
| 28 |
|
|
#define DEFLDMAX 100. |
| 29 |
|
|
|
| 30 |
greg |
3.23 |
#define BRT2SCALE(l2) (int)(M_LN2*TM_BRTSCALE*(l2) + .5 - ((l2) < 0)) |
| 31 |
greg |
3.1 |
|
| 32 |
greg |
3.22 |
#define HISTEP 16 /* steps in BRTSCALE for each bin */ |
| 33 |
greg |
3.1 |
|
| 34 |
|
|
#define MINBRT (-16*TM_BRTSCALE) /* minimum usable brightness */ |
| 35 |
|
|
#define MINLUM (1.125352e-7) /* tmLuminance(MINBRT) */ |
| 36 |
|
|
|
| 37 |
greg |
3.16 |
#define HISTI(li) (((li)-MINBRT)/HISTEP) |
| 38 |
greg |
3.17 |
#define HISTV(i) (MINBRT + HISTEP/2 + (i)*HISTEP) |
| 39 |
greg |
3.16 |
|
| 40 |
greg |
3.1 |
#define LMESLOWER (5.62e-3) /* lower mesopic limit */ |
| 41 |
greg |
3.3 |
#define LMESUPPER (5.62) /* upper mesopic limit */ |
| 42 |
|
|
#define BMESLOWER ((int)(-5.18*TM_BRTSCALE-.5)) |
| 43 |
|
|
#define BMESUPPER ((int)(1.73*TM_BRTSCALE+.5)) |
| 44 |
greg |
3.21 |
|
| 45 |
greg |
3.1 |
/* approximate scotopic lum. */ |
| 46 |
|
|
#define SCO_rf 0.062 |
| 47 |
|
|
#define SCO_gf 0.608 |
| 48 |
|
|
#define SCO_bf 0.330 |
| 49 |
|
|
#define scotlum(c) (SCO_rf*(c)[RED] + SCO_gf*(c)[GRN] + SCO_bf*(c)[BLU]) |
| 50 |
greg |
3.9 |
#define normscot(c) ( ( (int32)(SCO_rf*256.+.5)*(c)[RED] + \ |
| 51 |
|
|
(int32)(SCO_gf*256.+.5)*(c)[GRN] + \ |
| 52 |
|
|
(int32)(SCO_bf*256.+.5)*(c)[BLU] ) >> 8 ) |
| 53 |
greg |
3.1 |
|
| 54 |
greg |
3.18 |
extern int tmNewMap(TMstruct *tms); /* allocate new tone-mapping */ |
| 55 |
|
|
|
| 56 |
greg |
3.15 |
extern int tmErrorReturn(const char *, TMstruct *, int); |
| 57 |
greg |
3.1 |
|
| 58 |
greg |
3.6 |
/* lookup for mesopic scaling */ |
| 59 |
greg |
3.24 |
extern uby8 tmMesofact[BMESUPPER-BMESLOWER]; |
| 60 |
greg |
3.6 |
|
| 61 |
schorsch |
3.13 |
extern void tmMkMesofact(void); /* build tmMesofact */ |
| 62 |
greg |
3.6 |
|
| 63 |
greg |
3.14 |
#define returnErr(code) return(tmErrorReturn(funcName,tms,code)) |
| 64 |
greg |
3.1 |
#define returnOK return(TM_E_OK) |
| 65 |
|
|
|
| 66 |
|
|
#define FEQ(a,b) ((a) < (b)+1e-5 && (b) < (a)+1e-5) |
| 67 |
|
|
|
| 68 |
greg |
3.6 |
#define PRIMEQ(p1,p2) (FEQ((p1)[0][0],(p2)[0][0])&&FEQ((p1)[0][1],(p2)[0][1])\ |
| 69 |
|
|
&&FEQ((p1)[1][0],(p2)[1][0])&&FEQ((p1)[1][1],(p2)[1][1])\ |
| 70 |
|
|
&&FEQ((p1)[2][0],(p2)[2][0])&&FEQ((p1)[2][1],(p2)[2][1])\ |
| 71 |
|
|
&&FEQ((p1)[3][0],(p2)[3][0])&&FEQ((p1)[3][1],(p2)[3][1])) |
| 72 |
|
|
|
| 73 |
|
|
#ifdef __cplusplus |
| 74 |
|
|
} |
| 75 |
|
|
#endif |
| 76 |
schorsch |
3.8 |
#endif /* _RAD_TMPRIVAT_H_ */ |
| 77 |
|
|
|
