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/* required non-system header files */ |
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#include "color.h" |
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/**** Argument Macros ****/ |
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/* Flags of what to do */ |
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#define TM_F_HCONTR 01 /* human contrast sensitivity */ |
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#define TM_E_TMINVAL 3 /* no valid tone mapping */ |
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#define TM_E_TMFAIL 4 /* cannot compute tone mapping */ |
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#define TM_E_BADFILE 5 /* cannot open or understand file */ |
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#define TM_E_CODERR1 6 /* code consistency error 1 */ |
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#define TM_E_CODERR2 7 /* code consistency error 2 */ |
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/**** Conversion Constants and Table Sizes ****/ |
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#define TM_BRTSCALE 128 /* brightness scale factor (integer) */ |
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#define TM_GAMTSZ 1024 /* gamma lookup table size */ |
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#define TM_MAXPKG 8 /* maximum number of color formats */ |
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/**** Global Data Structures ****/ |
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/**** Global Data Types and Structures ****/ |
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#ifndef MEM_PTR |
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#define MEM_PTR void * |
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#endif |
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extern char *tmErrorMessage[]; /* error messages */ |
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typedef short TMbright; /* encoded luminance type */ |
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int flags; /* flags of what to do */ |
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RGBPRIMP monpri; /* monitor RGB primaries */ |
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double mongam; /* monitor gamma value (approx.) */ |
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BYTE gamb[TM_GAMTSZ];/* gamma lookup table from mongam */ |
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COLOR clf; /* computed luminance coefficients */ |
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COLR clfb; /* normalized version of clf */ |
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int cdiv[3]; /* computed color divisors */ |
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RGBPRIMP inppri; /* current input primaries */ |
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double inpsf; /* current input scalefactor */ |
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TMbright inpsfb; /* encoded version of inpsf */ |
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COLORMAT cmat; /* color conversion matrix */ |
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TMbright brmin, brmax; /* input brightness limits */ |
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int *histo; /* input histogram */ |
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unsigned short *lumap; /* computed luminance map */ |
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struct tmStruct *tmprev; /* previous tone mapping */ |
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MEM_PTR pd[TM_MAXPKG]; /* pointers to private data */ |
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} *tmTop; /* current tone mapping stack */ |
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/* conversion package functions */ |
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#ifdef NOPROTO |
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struct tmPackage { |
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MEM_PTR (*Init)(); /* initialize private data */ |
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void (*NewSpace)(); /* new input color space (optional) */ |
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void (*Free)(); /* free private data */ |
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}; |
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#else |
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struct tmPackage { |
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MEM_PTR (*Init)(struct tmStruct *tms); |
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int (*NewSpace)(struct tmStruct *tms); |
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void (*Free)(MEM_PTR pp); |
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}; |
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#endif |
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/* our list of conversion packages */ |
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extern struct tmPackage *tmPkg[TM_MAXPKG]; |
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extern int tmNumPkgs; /* number of registered packages */ |
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/**** Useful Macros ****/ |
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/* compute luminance from encoded value */ |
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#define tmLuminance(li) exp((li)/(double)TM_BRTSCALE) |
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/* does tone mapping need color matrix? */ |
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#define tmNeedMatrix(t) ((t)->monpri != (t)->inppri) |
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/* register a conversion package */ |
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#define tmRegPkg(pf) ( tmNumPkgs >= TM_MAXPKG ? -1 : \ |
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(tmPkg[tmNumPkgs] = (pf), tmNumPkgs++) ) |
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/* get the specific package's data */ |
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#define tmPkgData(t,i) ((t)->pd[i]!=NULL ? (t)->pd[i] : (*tmPkg[i]->Init)(t)) |
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/**** Library Function Calls ****/ |
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#ifdef NOPROTO |
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#ifdef NOPROTO |
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extern struct tmStruct *tmInit(), *tmPop(), *tmDup(); |
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extern void tmClearHisto(), tmDone(); |
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*/ |
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#endif |
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/**** Notes ****/ |
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/* |
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General: |