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greg |
3.1 |
/* Copyright (c) 1997 Regents of the University of California */
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/* SCCSid "$SunId$ LBL" */
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/*
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* Private header file for tone mapping routines.
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*/
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#undef NOPROTO
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#define NOPROTO 1
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#include "tonemap.h"
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greg |
3.2 |
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/* required constants */
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#ifndef M_LN2
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#define M_LN2 0.69314718055994530942
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#endif
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#ifndef M_LN10
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#define M_LN10 2.30258509299404568402
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#endif
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greg |
3.1 |
/* minimum values and defaults */
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#define MINGAM 0.75
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#define DEFGAM 2.2
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#define MINLDDYN 2.
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#define DEFLDDYN 32.
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#define MINLDMAX 1.
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#define DEFLDMAX 100.
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/* private flags */
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#define TM_F_INITED 010000 /* initialized flag */
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#define TM_F_NEEDMAT 020000 /* need matrix conversion */
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#define BRT2SCALE ((int)(M_LN2*TM_BRTSCALE+.5))
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#define HISTEP 8 /* steps in BRTSCALE for each bin */
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#define MINBRT (-16*TM_BRTSCALE) /* minimum usable brightness */
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#define MINLUM (1.125352e-7) /* tmLuminance(MINBRT) */
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#define LMESLOWER (5.62e-3) /* lower mesopic limit */
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greg |
3.3 |
#define LMESUPPER (5.62) /* upper mesopic limit */
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#if (TM_BRTSCALE==128)
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greg |
3.2 |
#define BMESLOWER (-663) /* encoded LMESLOWER */
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#define BMESUPPER (221) /* encoded LMESUPPER */
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greg |
3.3 |
#else
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#define BMESLOWER ((int)(-5.18*TM_BRTSCALE-.5))
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#define BMESUPPER ((int)(1.73*TM_BRTSCALE+.5))
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#endif
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greg |
3.1 |
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#ifndef int4
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#define int4 int /* assume 32-bit integers */
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#endif
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/* approximate scotopic lum. */
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#define SCO_rf 0.062
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#define SCO_gf 0.608
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#define SCO_bf 0.330
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#define scotlum(c) (SCO_rf*(c)[RED] + SCO_gf*(c)[GRN] + SCO_bf*(c)[BLU])
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#define normscot(c) ( ( (int4)(SCO_rf*256.+.5)*(c)[RED] + \
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(int4)(SCO_gf*256.+.5)*(c)[GRN] + \
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(int4)(SCO_bf*256.+.5)*(c)[BLU] ) >> 8 )
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#ifndef malloc
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extern char *malloc(), *calloc();
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#endif
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extern int tmErrorReturn();
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#define returnErr(code) return(tmErrorReturn(funcName,code))
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#define returnOK return(TM_E_OK)
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#define FEQ(a,b) ((a) < (b)+1e-5 && (b) < (a)+1e-5)
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#define PRIMEQ(p1,p2) (FEQ((p1)[0][0],(p2)[0][0])&&FEQ((p1)[0][1],(p2)[0][2])\
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&&FEQ((p1)[1][0],(p2)[1][0])&&FEQ((p1)[1][1],(p2)[1][2])\
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&&FEQ((p1)[2][0],(p2)[2][0])&&FEQ((p1)[2][1],(p2)[2][2])\
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&&FEQ((p1)[3][0],(p2)[3][0])&&FEQ((p1)[3][1],(p2)[3][2]))
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