New release 1.7.0

1 files changed, 156 insertions, 0 deletions

diff --git a/namedc/namedc.h b/namedc/namedc.h
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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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