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+/* $Xorg: Xcmsint.h,v 1.3 2000/08/17 19:45:05 cpqbld Exp $ */
+
+/*
+ * Code and supporting documentation (c) Copyright 1990 1991 Tektronix, Inc.
+ * All Rights Reserved
+ *
+ * This file is a component of an X Window System-specific implementation
+ * of Xcms based on the TekColor Color Management System. Permission is
+ * hereby granted to use, copy, modify, sell, and otherwise distribute this
+ * software and its documentation for any purpose and without fee, provided
+ * that this copyright, permission, and disclaimer notice is reproduced in
+ * all copies of this software and in supporting documentation. TekColor
+ * is a trademark of Tektronix, Inc.
+ *
+ * Tektronix makes no representation about the suitability of this software
+ * for any purpose. It is provided "as is" and with all faults.
+ *
+ * TEKTRONIX DISCLAIMS ALL WARRANTIES APPLICABLE TO THIS SOFTWARE,
+ * INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE. IN NO EVENT SHALL TEKTRONIX BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA, OR PROFITS, WHETHER IN AN ACTION OF
+ * CONTRACT, NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR THE PERFORMANCE OF THIS SOFTWARE.
+ *
+ *
+ * DESCRIPTION
+ * Private include file for Color Management System.
+ * (i.e., for API internal use only)
+ *
+ */
+/* $XFree86: xc/lib/X11/Xcmsint.h,v 3.3 2001/07/25 15:04:44 dawes Exp $ */
+
+#ifndef _XCMSINT_H_
+#define _XCMSINT_H_
+
+#include <X11/Xcms.h>
+
+/*
+ * DEFINES
+ */
+
+ /*
+ * Private Status Value
+ */
+#define _XCMS_NEWNAME -1
+
+ /*
+ * Color Space ID's are of XcmsColorFormat type.
+ *
+ * bit 31
+ * 0 == Device-Independent
+ * 1 == Device-Dependent
+ *
+ * bit 30:
+ * 0 == Registered with X Consortium
+ * 1 == Unregistered
+ */
+#define XCMS_DD_ID(id) ((id) & (XcmsColorFormat)0x80000000)
+#define XCMS_DI_ID(id) (!((id) & (XcmsColorFormat)0x80000000))
+#define XCMS_UNREG_ID(id) ((id) & (XcmsColorFormat)0x40000000)
+#define XCMS_REG_ID(id) (!((id) & (XcmsColorFormat)0x40000000))
+#define XCMS_FIRST_REG_DI_ID (XcmsColorFormat)0x00000001
+#define XCMS_FIRST_UNREG_DI_ID (XcmsColorFormat)0x40000000
+#define XCMS_FIRST_REG_DD_ID (XcmsColorFormat)0x80000000
+#define XCMS_FIRST_UNREG_DD_ID (XcmsColorFormat)0xc0000000
+
+/*
+ * TYPEDEFS
+ */
+
+ /*
+ * Structure for caching Colormap info.
+ * This is provided for the Xlib modifications to:
+ * XAllocNamedColor()
+ * XLookupColor()
+ * XParseColor()
+ * XStoreNamedColor()
+ */
+typedef struct _XcmsCmapRec {
+ Colormap cmapID;
+ Display *dpy;
+ Window windowID;
+ Visual *visual;
+ struct _XcmsCCC *ccc;
+ struct _XcmsCmapRec *pNext;
+} XcmsCmapRec;
+
+ /*
+ * Intensity Record (i.e., value / intensity tuple)
+ */
+typedef struct _IntensityRec {
+ unsigned short value;
+ XcmsFloat intensity;
+} IntensityRec;
+
+ /*
+ * Intensity Table
+ */
+typedef struct _IntensityTbl {
+ IntensityRec *pBase;
+ unsigned int nEntries;
+} IntensityTbl;
+
+ /*
+ * Structure for storing per-Visual Intensity Tables (aka gamma maps).
+ */
+typedef struct _XcmsIntensityMap {
+ VisualID visualID;
+ XPointer screenData; /* pointer to corresponding Screen Color*/
+ /* Characterization Data */
+ void (*pFreeScreenData)(XPointer pScreenDataTemp); /* Function that frees a Screen */
+ /* structure. */
+ struct _XcmsIntensityMap *pNext;
+} XcmsIntensityMap;
+
+
+ /*
+ * Structure for storing "registered" color space prefix/ID
+ */
+typedef struct _XcmsRegColorSpaceEntry {
+ const char *prefix; /* Color Space prefix (e.g., "CIEXYZ:") */
+ XcmsColorFormat id; /* Color Space ID (e.g., XcmsCIEXYZFormat) */
+} XcmsRegColorSpaceEntry;
+
+
+ /*
+ * Xcms Per Display (i.e. connection) related data
+ */
+typedef struct _XcmsPerDpyInfo {
+
+ XcmsCCC paDefaultCCC; /* based on default visual of screen */
+ /*
+ * Pointer to an array of XcmsCCC structures, one for
+ * each screen.
+ */
+ XcmsCmapRec *pClientCmaps; /* Pointer to linked list of XcmsCmapRec's */
+
+} XcmsPerDpyInfo, *XcmsPerDpyInfoPtr;
+
+/*
+ * DEFINES
+ */
+
+#define XDCCC_NUMBER 0x8000000L /* 2**27 per XDCCC */
+
+#ifdef GRAY
+#define XDCCC_SCREENWHITEPT_ATOM_NAME "XDCCC_GRAY_SCREENWHITEPOINT"
+#define XDCCC_GRAY_CORRECT_ATOM_NAME "XDCCC_GRAY_CORRECTION"
+#endif /* GRAY */
+
+#ifndef _ConversionValues
+typedef struct _ConversionValues {
+ IntensityTbl IntensityTbl;
+} ConversionValues;
+#endif
+
+#ifdef GRAY
+typedef struct {
+ IntensityTbl *IntensityTbl;
+} GRAY_SCCData;
+#endif /* GRAY */
+
+/*
+ * DEFINES
+ */
+
+#define XDCCC_MATRIX_ATOM_NAME "XDCCC_LINEAR_RGB_MATRICES"
+#define XDCCC_CORRECT_ATOM_NAME "XDCCC_LINEAR_RGB_CORRECTION"
+
+typedef struct {
+ XcmsFloat XYZtoRGBmatrix[3][3];
+ XcmsFloat RGBtoXYZmatrix[3][3];
+ IntensityTbl *pRedTbl;
+ IntensityTbl *pGreenTbl;
+ IntensityTbl *pBlueTbl;
+} LINEAR_RGB_SCCData;
+
+/* function prototypes */
+extern XcmsCmapRec *
+_XcmsAddCmapRec(
+ Display *dpy,
+ Colormap cmap,
+ Window windowID,
+ Visual *visual);
+extern void
+_XcmsRGB_to_XColor(
+ XcmsColor *pColors,
+ XColor *pXColors,
+ unsigned int nColors);
+extern Status
+_XcmsResolveColorString (
+ XcmsCCC ccc,
+ const char **color_string,
+ XcmsColor *pColor_exact_return,
+ XcmsColorFormat result_format);
+extern void
+_XUnresolveColor(
+ XcmsCCC ccc,
+ XColor *pXColor);
+/*
+ * DESCRIPTION
+ * Include file for defining the math macros used in the
+ * XCMS source. Instead of using math library routines
+ * directly, XCMS uses macros so that based on the
+ * definitions here, vendors and sites can specify exactly
+ * what routine will be called (those from libm.a or their
+ * custom routines). If not defined to math library routines
+ * (e.g., sqrt in libm.a), then the client is not forced to
+ * be linked with -lm.
+ */
+
+#define XCMS_ATAN(x) _XcmsArcTangent(x)
+#define XCMS_COS(x) _XcmsCosine(x)
+#define XCMS_CUBEROOT(x) _XcmsCubeRoot(x)
+#define XCMS_FABS(x) ((x) < 0.0 ? -(x) : (x))
+#define XCMS_SIN(x) _XcmsSine(x)
+#define XCMS_SQRT(x) _XcmsSquareRoot(x)
+#define XCMS_TAN(x) (XCMS_SIN(x) / XCMS_COS(x))
+
+double _XcmsArcTangent(double a);
+double _XcmsCosine(double a);
+double _XcmsCubeRoot(double a);
+double _XcmsSine(double a);
+double _XcmsSquareRoot(double a);
+
+/*
+ * DEFINES FOR GAMUT COMPRESSION AND QUERY ROUTINES
+ */
+#ifndef PI
+# ifdef M_PI
+# define PI M_PI
+# else
+# define PI 3.14159265358979323846264338327950
+# endif /* M_PI */
+#endif /* PI */
+#ifndef degrees
+# define degrees(r) ((XcmsFloat)(r) * 180.0 / PI)
+#endif /* degrees */
+#ifndef radians
+# define radians(d) ((XcmsFloat)(d) * PI / 180.0)
+#endif /* radians */
+
+#define XCMS_CIEUSTAROFHUE(h,c) \
+((XCMS_COS((h)) == 0.0) ? (XcmsFloat)0.0 : (XcmsFloat) \
+((XcmsFloat)(c) / (XcmsFloat)XCMS_SQRT((XCMS_TAN(h) * XCMS_TAN(h)) + \
+(XcmsFloat)1.0)))
+#define XCMS_CIEVSTAROFHUE(h,c) \
+((XCMS_COS((h)) == 0.0) ? (XcmsFloat)0.0 : (XcmsFloat) \
+((XcmsFloat)(c) / (XcmsFloat)XCMS_SQRT(((XcmsFloat)1.0 / \
+(XcmsFloat)(XCMS_TAN(h) * XCMS_TAN(h))) + (XcmsFloat)1.0)))
+/* this hue is returned in radians */
+#define XCMS_CIELUV_PMETRIC_HUE(u,v) \
+(((u) != 0.0) ? XCMS_ATAN( (v) / (u)) : ((v >= 0.0) ? PI / 2 : -(PI / 2)))
+#define XCMS_CIELUV_PMETRIC_CHROMA(u,v) XCMS_SQRT(((u)*(u)) + ((v)*(v)))
+
+#define XCMS_CIEASTAROFHUE(h,c) XCMS_CIEUSTAROFHUE((h), (c))
+#define XCMS_CIEBSTAROFHUE(h,c) XCMS_CIEVSTAROFHUE((h), (c))
+#define XCMS_CIELAB_PMETRIC_HUE(a,b) XCMS_CIELUV_PMETRIC_HUE((a), (b))
+#define XCMS_CIELAB_PMETRIC_CHROMA(a,b) XCMS_CIELUV_PMETRIC_CHROMA((a), (b))
+
+#endif /* _XCMSINT_H_ */