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#ifndef NAMEDC_H
#define NAMEDC_H
/*
* Argyll Color Correction System
* Named color set support.
*
* Author: Graeme W. Gill
* Date: 3/12/2013
*
* Copyright 2013 Graeme W. Gill
* All rights reserved.
*
* This material is licenced under the GNU AFFERO GENERAL PUBLIC LICENSE Version 3 :-
* see the License2.txt file for licencing details.
*
*/
/*
* This class provides storage for a list of named colors
* in a file format independent fashiom.
*
* Currently these are all assumed to be reflective colors.
*
* Current implementation is read only, but it could be converted
* to support creating and writing too.
*
*/
/* ------------------------------------------------------------------------------ */
/* An individual named color */
struct _nce {
char *name; /* Name in ASCII/UTF-8 */
double Lab[3]; /* D50 L*a*b* */
int Lab_v; /* nz if Lab is valid */
xspect *sp; /* Non-NULL if valid spectral reflectance, norm 100% */
icColorSpaceSignature devSig; /* Device colorspace signature, icMaxEnumData if invalid */
int dev_n; /* Number of channels */
double dev[MAX_CHAN]; /* Optional device values, ie CMYK in % */
}; typedef struct _nce nce;
struct _namedc {
char *creator; /* Creator name in ASCII/UTF-8 */
char *description; /* Description in ASCII/UTF-8 */
int hash; /* hash of filename and description */
icxIllumeType ill; /* Illuminant values was measured under */
icxObserverType obs; /* Observer model */
unsigned int count; /* Count of named colors */
unsigned int count_a; /* Allocated number of colors */
nce *data; /* Array of [count] color values */
/* Public: */
void (*del)(struct _namedc *p);
#define NAMEDC_OP_NONE 0x0000
#define NAMEDC_OP_NODATA 0x0001 /* Don't load any data, just description */
#define NAMEDC_OP_NOSPEC 0x0002 /* Don't load spectral data */
/* Read a cxf 3 format named color file */
/* return nz on error */
int (*read_cxf)(struct _namedc *p, const char *filename, int options);
/* Read an ICC format named color file */
/* return nz on error */
int (*read_icc)(struct _namedc *p, const char *filename, int options);
/* Read any format named color files */
int (*read)(struct _namedc *p, const char *filename, int options);
/* Return the index of the best mataching color, -1 on error. */
/* Lab[] is assumed to be D50, 2 degree standard observer based CIE value, */
/* and the spec value should only be provided if this is a reflective or */
/* transmissive measurement, NULL if emissive. */
/* If named color library is expects other than D50, 2 degree, then */
/* it will use the spectral value if not NULL, or chromatically */
/* adapt the Lab value. */
/* deType == 0 DE76 */
/* deType == 1 DE94 */
/* deType == 2 DE2000 */
/* if de != NULL, return the delta E */
int (*match)(struct _namedc *p, double *de, double *Lab, xspect *spect, int deType);
/* Houskeeping - should switch this to a1log ? */
#define NAMEDC_ERRL 1000
int errc; /* Error code */
char err[NAMEDC_ERRL]; /* Error message */
/* Private: */
a1log *log;
char *filename; /* So we can lazy read the colors */
int format; /* 0 = unknown, 1 = cxf, 2 = ICC */
int options;
int indata; /* State flag for sax_cb() */
char pfx[100]; /* Prefix to apply */
#define NAMEDC_PLEN 500
char prefix[NAMEDC_PLEN]; /* Temporary buffers to use */
/* Color conversions */
xsp2cie *sp2cie; /* Reflectance or Transmittance to this namedc space */
double chrom[3][3]; /* Chromatic transform to this namedc space */
icmXYZNumber dXYZ; /* Named color white point */
}; typedef struct _namedc namedc;
/* Create a new, uninitialised namedc */
namedc *new_namedc(a1log *log);
#endif /* NAMEDC_H */
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