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/*
* 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)
*
*/
#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_ */
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