| 1 |
/* RCSid $Id: tmprivat.h,v 3.12 2003/07/14 22:23:59 schorsch 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) + ((l2)>0 ? .5 : -.5)) |
| 34 |
|
| 35 |
#define HISTEP 8 /* 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 LMESLOWER (5.62e-3) /* lower mesopic limit */ |
| 41 |
#define LMESUPPER (5.62) /* upper mesopic limit */ |
| 42 |
#if (TM_BRTSCALE==128) |
| 43 |
#define BMESLOWER (-663) /* encoded LMESLOWER */ |
| 44 |
#define BMESUPPER (221) /* encoded LMESUPPER */ |
| 45 |
#else |
| 46 |
#define BMESLOWER ((int)(-5.18*TM_BRTSCALE-.5)) |
| 47 |
#define BMESUPPER ((int)(1.73*TM_BRTSCALE+.5)) |
| 48 |
#endif |
| 49 |
/* approximate scotopic lum. */ |
| 50 |
#define SCO_rf 0.062 |
| 51 |
#define SCO_gf 0.608 |
| 52 |
#define SCO_bf 0.330 |
| 53 |
#define scotlum(c) (SCO_rf*(c)[RED] + SCO_gf*(c)[GRN] + SCO_bf*(c)[BLU]) |
| 54 |
#define normscot(c) ( ( (int32)(SCO_rf*256.+.5)*(c)[RED] + \ |
| 55 |
(int32)(SCO_gf*256.+.5)*(c)[GRN] + \ |
| 56 |
(int32)(SCO_bf*256.+.5)*(c)[BLU] ) >> 8 ) |
| 57 |
|
| 58 |
#ifndef malloc |
| 59 |
MEM_PTR malloc(); |
| 60 |
MEM_PTR calloc(); |
| 61 |
#endif |
| 62 |
extern int tmErrorReturn(char*, int); |
| 63 |
|
| 64 |
/* lookup for mesopic scaling */ |
| 65 |
extern BYTE tmMesofact[BMESUPPER-BMESLOWER]; |
| 66 |
|
| 67 |
extern void tmMkMesofact(void); /* build tmMesofact */ |
| 68 |
|
| 69 |
#define returnErr(code) return(tmErrorReturn(funcName,code)) |
| 70 |
#define returnOK return(TM_E_OK) |
| 71 |
|
| 72 |
#define FEQ(a,b) ((a) < (b)+1e-5 && (b) < (a)+1e-5) |
| 73 |
|
| 74 |
#define PRIMEQ(p1,p2) (FEQ((p1)[0][0],(p2)[0][0])&&FEQ((p1)[0][1],(p2)[0][1])\ |
| 75 |
&&FEQ((p1)[1][0],(p2)[1][0])&&FEQ((p1)[1][1],(p2)[1][1])\ |
| 76 |
&&FEQ((p1)[2][0],(p2)[2][0])&&FEQ((p1)[2][1],(p2)[2][1])\ |
| 77 |
&&FEQ((p1)[3][0],(p2)[3][0])&&FEQ((p1)[3][1],(p2)[3][1])) |
| 78 |
|
| 79 |
|
| 80 |
#ifdef __cplusplus |
| 81 |
} |
| 82 |
#endif |
| 83 |
#endif /* _RAD_TMPRIVAT_H_ */ |
| 84 |
|
