diff options
Diffstat (limited to 'libX11/src/xcms')
| -rw-r--r-- | libX11/src/xcms/LRGB.c | 3694 |
1 files changed, 1847 insertions, 1847 deletions
diff --git a/libX11/src/xcms/LRGB.c b/libX11/src/xcms/LRGB.c index 4e9f029e4..7e09db00a 100644 --- a/libX11/src/xcms/LRGB.c +++ b/libX11/src/xcms/LRGB.c @@ -1,1847 +1,1847 @@ - -/* - * 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. - * - * - * NAME - * XcmsLRGB.c - * - * DESCRIPTION - * This file contains the conversion routines: - * 1. CIE XYZ to RGB intensity - * 2. RGB intensity to device RGB - * 3. device RGB to RGB intensity - * 4. RGB intensity to CIE XYZ - * - */ - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif -#include <stdio.h> -#include <X11/Xos.h> -#include <X11/Xatom.h> -#include "Xlibint.h" -#include "Xcmsint.h" -#include "Cv.h" - -/* - * LOCAL DEFINES - * #define declarations local to this package. - */ -#define EPS 0.001 -#ifndef MIN -#define MIN(x,y) ((x) > (y) ? (y) : (x)) -#endif /* MIN */ -#ifndef MAX -#define MAX(x,y) ((x) > (y) ? (x) : (y)) -#endif /* MAX */ -#ifndef MIN3 -#define MIN3(x,y,z) ((x) > (MIN((y), (z))) ? (MIN((y), (z))) : (x)) -#endif /* MIN3 */ -#ifndef MAX3 -#define MAX3(x,y,z) ((x) > (MAX((y), (z))) ? (x) : (MAX((y), (z)))) -#endif /* MAX3 */ - -/* - * LOCAL TYPEDEFS - * typedefs local to this package (for use with local vars). - * - */ - -/* - * FORWARD DECLARATIONS - */ -static void LINEAR_RGB_FreeSCCData(XPointer pScreenDataTemp); -static int LINEAR_RGB_InitSCCData(Display *dpy, - int screenNumber, XcmsPerScrnInfo *pPerScrnInfo); -static int XcmsLRGB_RGB_ParseString(register char *spec, XcmsColor *pColor); -static int XcmsLRGB_RGBi_ParseString(register char *spec, XcmsColor *pColor); -static Status -_XcmsGetTableType0( - IntensityTbl *pTbl, - int format, - char **pChar, - unsigned long *pCount); -static Status -_XcmsGetTableType1( - IntensityTbl *pTbl, - int format, - char **pChar, - unsigned long *pCount); - -/* - * LOCALS VARIABLES - * Variables local to this package. - * Usage example: - * static int ExampleLocalVar; - */ - -static unsigned short const MASK[17] = { - 0x0000, /* 0 bitsPerRGB */ - 0x8000, /* 1 bitsPerRGB */ - 0xc000, /* 2 bitsPerRGB */ - 0xe000, /* 3 bitsPerRGB */ - 0xf000, /* 4 bitsPerRGB */ - 0xf800, /* 5 bitsPerRGB */ - 0xfc00, /* 6 bitsPerRGB */ - 0xfe00, /* 7 bitsPerRGB */ - 0xff00, /* 8 bitsPerRGB */ - 0xff80, /* 9 bitsPerRGB */ - 0xffc0, /* 10 bitsPerRGB */ - 0xffe0, /* 11 bitsPerRGB */ - 0xfff0, /* 12 bitsPerRGB */ - 0xfff8, /* 13 bitsPerRGB */ - 0xfffc, /* 14 bitsPerRGB */ - 0xfffe, /* 15 bitsPerRGB */ - 0xffff /* 16 bitsPerRGB */ -}; - - - /* - * A NULL terminated array of function pointers that when applied - * in series will convert an XcmsColor structure from XcmsRGBFormat - * to XcmsCIEXYZFormat. - */ -static XcmsConversionProc Fl_RGB_to_CIEXYZ[] = { - (XcmsConversionProc)XcmsRGBToRGBi, - (XcmsConversionProc)XcmsRGBiToCIEXYZ, - NULL -}; - - /* - * A NULL terminated array of function pointers that when applied - * in series will convert an XcmsColor structure from XcmsCIEXYZFormat - * to XcmsRGBFormat. - */ -static XcmsConversionProc Fl_CIEXYZ_to_RGB[] = { - (XcmsConversionProc)XcmsCIEXYZToRGBi, - (XcmsConversionProc)XcmsRGBiToRGB, - NULL -}; - - /* - * A NULL terminated array of function pointers that when applied - * in series will convert an XcmsColor structure from XcmsRGBiFormat - * to XcmsCIEXYZFormat. - */ -static XcmsConversionProc Fl_RGBi_to_CIEXYZ[] = { - (XcmsConversionProc)XcmsRGBiToCIEXYZ, - NULL -}; - - /* - * A NULL terminated array of function pointers that when applied - * in series will convert an XcmsColor structure from XcmsCIEXYZFormat - * to XcmsRGBiFormat. - */ -static XcmsConversionProc Fl_CIEXYZ_to_RGBi[] = { - (XcmsConversionProc)XcmsCIEXYZToRGBi, - NULL -}; - - /* - * RGBi Color Spaces - */ -XcmsColorSpace XcmsRGBiColorSpace = - { - _XcmsRGBi_prefix, /* prefix */ - XcmsRGBiFormat, /* id */ - XcmsLRGB_RGBi_ParseString, /* parseString */ - Fl_RGBi_to_CIEXYZ, /* to_CIEXYZ */ - Fl_CIEXYZ_to_RGBi, /* from_CIEXYZ */ - 1 - }; - - /* - * RGB Color Spaces - */ -XcmsColorSpace XcmsRGBColorSpace = - { - _XcmsRGB_prefix, /* prefix */ - XcmsRGBFormat, /* id */ - XcmsLRGB_RGB_ParseString, /* parseString */ - Fl_RGB_to_CIEXYZ, /* to_CIEXYZ */ - Fl_CIEXYZ_to_RGB, /* from_CIEXYZ */ - 1 - }; - - /* - * Device-Independent Color Spaces known to the - * LINEAR_RGB Screen Color Characteristics Function Set. - */ -static XcmsColorSpace *DDColorSpaces[] = { - &XcmsRGBColorSpace, - &XcmsRGBiColorSpace, - NULL -}; - - -/* - * GLOBALS - * Variables declared in this package that are allowed - * to be used globally. - */ - - /* - * LINEAR_RGB Screen Color Characteristics Function Set. - */ -XcmsFunctionSet XcmsLinearRGBFunctionSet = - { - &DDColorSpaces[0], /* pDDColorSpaces */ - LINEAR_RGB_InitSCCData, /* pInitScrnFunc */ - LINEAR_RGB_FreeSCCData /* pFreeSCCData */ - }; - -/* - * DESCRIPTION - * Contents of Default SCCData should be replaced if other - * data should be used as default. - * - * - */ - -/* - * NAME Tektronix 19" (Sony) CRT - * PART_NUMBER 119-2451-00 - * MODEL Tek4300, Tek4800 - */ - -static IntensityRec const Default_RGB_RedTuples[] = { - /* {unsigned short value, XcmsFloat intensity} */ - { 0x0000, 0.000000 }, - { 0x0909, 0.000000 }, - { 0x0a0a, 0.000936 }, - { 0x0f0f, 0.001481 }, - { 0x1414, 0.002329 }, - { 0x1919, 0.003529 }, - { 0x1e1e, 0.005127 }, - { 0x2323, 0.007169 }, - { 0x2828, 0.009699 }, - { 0x2d2d, 0.012759 }, - { 0x3232, 0.016392 }, - { 0x3737, 0.020637 }, - { 0x3c3c, 0.025533 }, - { 0x4141, 0.031119 }, - { 0x4646, 0.037431 }, - { 0x4b4b, 0.044504 }, - { 0x5050, 0.052373 }, - { 0x5555, 0.061069 }, - { 0x5a5a, 0.070624 }, - { 0x5f5f, 0.081070 }, - { 0x6464, 0.092433 }, - { 0x6969, 0.104744 }, - { 0x6e6e, 0.118026 }, - { 0x7373, 0.132307 }, - { 0x7878, 0.147610 }, - { 0x7d7d, 0.163958 }, - { 0x8282, 0.181371 }, - { 0x8787, 0.199871 }, - { 0x8c8c, 0.219475 }, - { 0x9191, 0.240202 }, - { 0x9696, 0.262069 }, - { 0x9b9b, 0.285089 }, - { 0xa0a0, 0.309278 }, - { 0xa5a5, 0.334647 }, - { 0xaaaa, 0.361208 }, - { 0xafaf, 0.388971 }, - { 0xb4b4, 0.417945 }, - { 0xb9b9, 0.448138 }, - { 0xbebe, 0.479555 }, - { 0xc3c3, 0.512202 }, - { 0xc8c8, 0.546082 }, - { 0xcdcd, 0.581199 }, - { 0xd2d2, 0.617552 }, - { 0xd7d7, 0.655144 }, - { 0xdcdc, 0.693971 }, - { 0xe1e1, 0.734031 }, - { 0xe6e6, 0.775322 }, - { 0xebeb, 0.817837 }, - { 0xf0f0, 0.861571 }, - { 0xf5f5, 0.906515 }, - { 0xfafa, 0.952662 }, - { 0xffff, 1.000000 } -}; - -static IntensityRec const Default_RGB_GreenTuples[] = { - /* {unsigned short value, XcmsFloat intensity} */ - { 0x0000, 0.000000 }, - { 0x1313, 0.000000 }, - { 0x1414, 0.000832 }, - { 0x1919, 0.001998 }, - { 0x1e1e, 0.003612 }, - { 0x2323, 0.005736 }, - { 0x2828, 0.008428 }, - { 0x2d2d, 0.011745 }, - { 0x3232, 0.015740 }, - { 0x3737, 0.020463 }, - { 0x3c3c, 0.025960 }, - { 0x4141, 0.032275 }, - { 0x4646, 0.039449 }, - { 0x4b4b, 0.047519 }, - { 0x5050, 0.056520 }, - { 0x5555, 0.066484 }, - { 0x5a5a, 0.077439 }, - { 0x5f5f, 0.089409 }, - { 0x6464, 0.102418 }, - { 0x6969, 0.116485 }, - { 0x6e6e, 0.131625 }, - { 0x7373, 0.147853 }, - { 0x7878, 0.165176 }, - { 0x7d7d, 0.183604 }, - { 0x8282, 0.203140 }, - { 0x8787, 0.223783 }, - { 0x8c8c, 0.245533 }, - { 0x9191, 0.268384 }, - { 0x9696, 0.292327 }, - { 0x9b9b, 0.317351 }, - { 0xa0a0, 0.343441 }, - { 0xa5a5, 0.370580 }, - { 0xaaaa, 0.398747 }, - { 0xafaf, 0.427919 }, - { 0xb4b4, 0.458068 }, - { 0xb9b9, 0.489165 }, - { 0xbebe, 0.521176 }, - { 0xc3c3, 0.554067 }, - { 0xc8c8, 0.587797 }, - { 0xcdcd, 0.622324 }, - { 0xd2d2, 0.657604 }, - { 0xd7d7, 0.693588 }, - { 0xdcdc, 0.730225 }, - { 0xe1e1, 0.767459 }, - { 0xe6e6, 0.805235 }, - { 0xebeb, 0.843491 }, - { 0xf0f0, 0.882164 }, - { 0xf5f5, 0.921187 }, - { 0xfafa, 0.960490 }, - { 0xffff, 1.000000 } -}; - -static IntensityRec const Default_RGB_BlueTuples[] = { - /* {unsigned short value, XcmsFloat intensity} */ - { 0x0000, 0.000000 }, - { 0x0e0e, 0.000000 }, - { 0x0f0f, 0.001341 }, - { 0x1414, 0.002080 }, - { 0x1919, 0.003188 }, - { 0x1e1e, 0.004729 }, - { 0x2323, 0.006766 }, - { 0x2828, 0.009357 }, - { 0x2d2d, 0.012559 }, - { 0x3232, 0.016424 }, - { 0x3737, 0.021004 }, - { 0x3c3c, 0.026344 }, - { 0x4141, 0.032489 }, - { 0x4646, 0.039481 }, - { 0x4b4b, 0.047357 }, - { 0x5050, 0.056154 }, - { 0x5555, 0.065903 }, - { 0x5a5a, 0.076634 }, - { 0x5f5f, 0.088373 }, - { 0x6464, 0.101145 }, - { 0x6969, 0.114968 }, - { 0x6e6e, 0.129862 }, - { 0x7373, 0.145841 }, - { 0x7878, 0.162915 }, - { 0x7d7d, 0.181095 }, - { 0x8282, 0.200386 }, - { 0x8787, 0.220791 }, - { 0x8c8c, 0.242309 }, - { 0x9191, 0.264937 }, - { 0x9696, 0.288670 }, - { 0x9b9b, 0.313499 }, - { 0xa0a0, 0.339410 }, - { 0xa5a5, 0.366390 }, - { 0xaaaa, 0.394421 }, - { 0xafaf, 0.423481 }, - { 0xb4b4, 0.453547 }, - { 0xb9b9, 0.484592 }, - { 0xbebe, 0.516587 }, - { 0xc3c3, 0.549498 }, - { 0xc8c8, 0.583291 }, - { 0xcdcd, 0.617925 }, - { 0xd2d2, 0.653361 }, - { 0xd7d7, 0.689553 }, - { 0xdcdc, 0.726454 }, - { 0xe1e1, 0.764013 }, - { 0xe6e6, 0.802178 }, - { 0xebeb, 0.840891 }, - { 0xf0f0, 0.880093 }, - { 0xf5f5, 0.919723 }, - { 0xfafa, 0.959715 }, - { 0xffff, 1.00000 } -}; - -static IntensityTbl Default_RGB_RedTbl = { - /* IntensityRec *pBase */ - (IntensityRec *) Default_RGB_RedTuples, - /* unsigned int nEntries */ - 52 -}; - -static IntensityTbl Default_RGB_GreenTbl = { - /* IntensityRec *pBase */ - (IntensityRec *)Default_RGB_GreenTuples, - /* unsigned int nEntries */ - 50 -}; - -static IntensityTbl Default_RGB_BlueTbl = { - /* IntensityRec *pBase */ - (IntensityRec *)Default_RGB_BlueTuples, - /* unsigned int nEntries */ - 51 -}; - -static LINEAR_RGB_SCCData Default_RGB_SCCData = { - /* XcmsFloat XYZtoRGBmatrix[3][3] */ - { - { 3.48340481253539000, -1.52176374927285200, -0.55923133354049780 }, - {-1.07152751306193600, 1.96593795204372400, 0.03673691339553462 }, - { 0.06351179790497788, -0.20020501000496480, 0.81070942031648220 } - }, - - /* XcmsFloat RGBtoXYZmatrix[3][3] */ - { - { 0.38106149108714790, 0.32025712365352110, 0.24834578525933100 }, - { 0.20729745115140850, 0.68054638776373240, 0.11215616108485920 }, - { 0.02133944350088028, 0.14297193020246480, 1.24172892629665500 } - }, - - /* IntensityTbl *pRedTbl */ - &Default_RGB_RedTbl, - - /* IntensityTbl *pGreenTbl */ - &Default_RGB_GreenTbl, - - /* IntensityTbl *pBlueTbl */ - &Default_RGB_BlueTbl -}; - -/************************************************************************ - * * - * PRIVATE ROUTINES * - * * - ************************************************************************/ - -/* - * NAME - * LINEAR_RGB_InitSCCData() - * - * SYNOPSIS - */ -static Status -LINEAR_RGB_InitSCCData( - Display *dpy, - int screenNumber, - XcmsPerScrnInfo *pPerScrnInfo) -/* - * DESCRIPTION - * - * RETURNS - * XcmsFailure if failed. - * XcmsSuccess if succeeded. - * - */ -{ - Atom CorrectAtom = XInternAtom (dpy, XDCCC_CORRECT_ATOM_NAME, True); - Atom MatrixAtom = XInternAtom (dpy, XDCCC_MATRIX_ATOM_NAME, True); - int format_return, count, cType, nTables; - unsigned long nitems, nbytes_return; - char *property_return, *pChar; - XcmsFloat *pValue; -#ifdef ALLDEBUG - IntensityRec *pIRec; -#endif /* ALLDEBUG */ - VisualID visualID; - - LINEAR_RGB_SCCData *pScreenData, *pScreenDefaultData; - XcmsIntensityMap *pNewMap; - - /* - * Allocate memory for pScreenData - */ - if (!(pScreenData = pScreenDefaultData = (LINEAR_RGB_SCCData *) - Xcalloc (1, sizeof(LINEAR_RGB_SCCData)))) { - return(XcmsFailure); - } - - /* - * 1. Get the XYZ->RGB and RGB->XYZ matrices - */ - - if (MatrixAtom == None || - !_XcmsGetProperty (dpy, RootWindow(dpy, screenNumber), MatrixAtom, - &format_return, &nitems, &nbytes_return, &property_return) || - nitems != 18 || format_return != 32) { - /* - * As per the XDCCC, there must be 18 data items and each must be - * in 32 bits ! - */ - goto FreeSCCData; - - } else { - - /* - * RGBtoXYZ and XYZtoRGB matrices - */ - pValue = (XcmsFloat *) pScreenData; - pChar = property_return; - for (count = 0; count < 18; count++) { - *pValue++ = (long)_XcmsGetElement(format_return, &pChar, - &nitems) / (XcmsFloat)XDCCC_NUMBER; - } - Xfree ((char *)property_return); - pPerScrnInfo->screenWhitePt.spec.CIEXYZ.X = - pScreenData->RGBtoXYZmatrix[0][0] + - pScreenData->RGBtoXYZmatrix[0][1] + - pScreenData->RGBtoXYZmatrix[0][2]; - pPerScrnInfo->screenWhitePt.spec.CIEXYZ.Y = - pScreenData->RGBtoXYZmatrix[1][0] + - pScreenData->RGBtoXYZmatrix[1][1] + - pScreenData->RGBtoXYZmatrix[1][2]; - pPerScrnInfo->screenWhitePt.spec.CIEXYZ.Z = - pScreenData->RGBtoXYZmatrix[2][0] + - pScreenData->RGBtoXYZmatrix[2][1] + - pScreenData->RGBtoXYZmatrix[2][2]; - - /* - * Compute the Screen White Point - */ - if ((pPerScrnInfo->screenWhitePt.spec.CIEXYZ.Y < (1.0 - EPS) ) - || (pPerScrnInfo->screenWhitePt.spec.CIEXYZ.Y > (1.0 + EPS))) { - goto FreeSCCData; - } else { - pPerScrnInfo->screenWhitePt.spec.CIEXYZ.Y = 1.0; - } - pPerScrnInfo->screenWhitePt.format = XcmsCIEXYZFormat; - pPerScrnInfo->screenWhitePt.pixel = 0; - -#ifdef PDEBUG - printf ("RGB to XYZ Matrix values:\n"); - printf (" %f %f %f\n %f %f %f\n %f %f %f\n", - pScreenData->RGBtoXYZmatrix[0][0], - pScreenData->RGBtoXYZmatrix[0][1], - pScreenData->RGBtoXYZmatrix[0][2], - pScreenData->RGBtoXYZmatrix[1][0], - pScreenData->RGBtoXYZmatrix[1][1], - pScreenData->RGBtoXYZmatrix[1][2], - pScreenData->RGBtoXYZmatrix[2][0], - pScreenData->RGBtoXYZmatrix[2][1], - pScreenData->RGBtoXYZmatrix[2][2]); - printf ("XYZ to RGB Matrix values:\n"); - printf (" %f %f %f\n %f %f %f\n %f %f %f\n", - pScreenData->XYZtoRGBmatrix[0][0], - pScreenData->XYZtoRGBmatrix[0][1], - pScreenData->XYZtoRGBmatrix[0][2], - pScreenData->XYZtoRGBmatrix[1][0], - pScreenData->XYZtoRGBmatrix[1][1], - pScreenData->XYZtoRGBmatrix[1][2], - pScreenData->XYZtoRGBmatrix[2][0], - pScreenData->XYZtoRGBmatrix[2][1], - pScreenData->XYZtoRGBmatrix[2][2]); - printf ("Screen White Pt value: %f %f %f\n", - pPerScrnInfo->screenWhitePt.spec.CIEXYZ.X, - pPerScrnInfo->screenWhitePt.spec.CIEXYZ.Y, - pPerScrnInfo->screenWhitePt.spec.CIEXYZ.Z); -#endif /* PDEBUG */ - } - - /* - * 2. Get the Intensity Profile - */ - if (CorrectAtom == None || - !_XcmsGetProperty (dpy, RootWindow(dpy, screenNumber), CorrectAtom, - &format_return, &nitems, &nbytes_return, &property_return)) { - Xfree ((char *)property_return); - goto FreeSCCData; - } - - pChar = property_return; - - while (nitems) { - switch (format_return) { - case 8: - /* - * Must have at least: - * VisualID0 - * VisualID1 - * VisualID2 - * VisualID3 - * type - * count - * length - * intensity1 - * intensity2 - */ - if (nitems < 9) { - Xfree ((char *)property_return); - goto FreeSCCData; - } - count = 3; - break; - case 16: - /* - * Must have at least: - * VisualID0 - * VisualID3 - * type - * count - * length - * intensity1 - * intensity2 - */ - if (nitems < 7) { - Xfree ((char *)property_return); - goto FreeSCCData; - } - count = 1; - break; - case 32: - /* - * Must have at least: - * VisualID0 - * type - * count - * length - * intensity1 - * intensity2 - */ - if (nitems < 6) { - Xfree ((char *)property_return); - goto FreeSCCData; - } - count = 0; - break; - default: - Xfree ((char *)property_return); - goto FreeSCCData; - } - - /* - * Get VisualID - */ - visualID = _XcmsGetElement(format_return, &pChar, &nitems); - while (count--) { - visualID = visualID << format_return; - visualID |= _XcmsGetElement(format_return, &pChar, &nitems); - } - - if (visualID == 0) { - /* - * This is a shared intensity table - */ - pScreenData = pScreenDefaultData; - } else { - /* - * This is a per-Visual intensity table - */ - if (!(pScreenData = (LINEAR_RGB_SCCData *) - Xcalloc (1, sizeof(LINEAR_RGB_SCCData)))) { - return(XcmsFailure); - } - /* copy matrices */ - memcpy((char *)pScreenData, (char *)pScreenDefaultData, - 18 * sizeof(XcmsFloat)); - - /* Create, initialize, and add map */ - if (!(pNewMap = (XcmsIntensityMap *) - Xcalloc (1, sizeof(XcmsIntensityMap)))) { - Xfree((char *)pScreenData); - return(XcmsFailure); - } - pNewMap->visualID = visualID; - pNewMap->screenData = (XPointer)pScreenData; - pNewMap->pFreeScreenData = LINEAR_RGB_FreeSCCData; - pNewMap->pNext = - (XcmsIntensityMap *)dpy->cms.perVisualIntensityMaps; - dpy->cms.perVisualIntensityMaps = (XPointer)pNewMap; - dpy->free_funcs->intensityMaps = _XcmsFreeIntensityMaps; - } - - cType = _XcmsGetElement(format_return, &pChar, &nitems); - nTables = _XcmsGetElement(format_return, &pChar, &nitems); - - if (cType == 0) { - - /* Red Intensity Table */ - if (!(pScreenData->pRedTbl = (IntensityTbl *) - Xcalloc (1, sizeof(IntensityTbl)))) { - goto FreeSCCData; - } - if (_XcmsGetTableType0(pScreenData->pRedTbl, format_return, &pChar, - &nitems) == XcmsFailure) { - goto FreeRedTbl; - } - - if (nTables == 1) { - /* Green Intensity Table */ - pScreenData->pGreenTbl = pScreenData->pRedTbl; - /* Blue Intensity Table */ - pScreenData->pBlueTbl = pScreenData->pRedTbl; - } else { - /* Green Intensity Table */ - if (!(pScreenData->pGreenTbl = (IntensityTbl *) - Xcalloc (1, sizeof(IntensityTbl)))) { - goto FreeRedTblElements; - } - if (_XcmsGetTableType0(pScreenData->pGreenTbl, format_return, &pChar, - &nitems) == XcmsFailure) { - goto FreeGreenTbl; - } - - /* Blue Intensity Table */ - if (!(pScreenData->pBlueTbl = (IntensityTbl *) - Xcalloc (1, sizeof(IntensityTbl)))) { - goto FreeGreenTblElements; - } - if (_XcmsGetTableType0(pScreenData->pBlueTbl, format_return, &pChar, - &nitems) == XcmsFailure) { - goto FreeBlueTbl; - } - } - } else if (cType == 1) { - /* Red Intensity Table */ - if (!(pScreenData->pRedTbl = (IntensityTbl *) - Xcalloc (1, sizeof(IntensityTbl)))) { - goto FreeSCCData; - } - if (_XcmsGetTableType1(pScreenData->pRedTbl, format_return, &pChar, - &nitems) == XcmsFailure) { - goto FreeRedTbl; - } - - if (nTables == 1) { - - /* Green Intensity Table */ - pScreenData->pGreenTbl = pScreenData->pRedTbl; - /* Blue Intensity Table */ - pScreenData->pBlueTbl = pScreenData->pRedTbl; - - } else { - - /* Green Intensity Table */ - if (!(pScreenData->pGreenTbl = (IntensityTbl *) - Xcalloc (1, sizeof(IntensityTbl)))) { - goto FreeRedTblElements; - } - if (_XcmsGetTableType1(pScreenData->pGreenTbl, format_return, &pChar, - &nitems) == XcmsFailure) { - goto FreeGreenTbl; - } - - /* Blue Intensity Table */ - if (!(pScreenData->pBlueTbl = (IntensityTbl *) - Xcalloc (1, sizeof(IntensityTbl)))) { - goto FreeBlueTblElements; - } - if (_XcmsGetTableType1(pScreenData->pBlueTbl, format_return, &pChar, - &nitems) == XcmsFailure) { - goto FreeBlueTbl; - } - } - } else { - Xfree ((char *)property_return); - goto FreeSCCData; - } - -#ifdef ALLDEBUG - printf ("Intensity Table RED %d\n", pScreenData->pRedTbl->nEntries); - pIRec = (IntensityRec *) pScreenData->pRedTbl->pBase; - for (count = 0; count < pScreenData->pRedTbl->nEntries; count++, pIRec++) { - printf ("\t0x%4x\t%f\n", pIRec->value, pIRec->intensity); - } - if (pScreenData->pGreenTbl->pBase != pScreenData->pRedTbl->pBase) { - printf ("Intensity Table GREEN %d\n", pScreenData->pGreenTbl->nEntries); - pIRec = (IntensityRec *)pScreenData->pGreenTbl->pBase; - for (count = 0; count < pScreenData->pGreenTbl->nEntries; count++, pIRec++) { - printf ("\t0x%4x\t%f\n", pIRec->value, pIRec->intensity); - } - } - if (pScreenData->pBlueTbl->pBase != pScreenData->pRedTbl->pBase) { - printf ("Intensity Table BLUE %d\n", pScreenData->pBlueTbl->nEntries); - pIRec = (IntensityRec *) pScreenData->pBlueTbl->pBase; - for (count = 0; count < pScreenData->pBlueTbl->nEntries; count++, pIRec++) { - printf ("\t0x%4x\t%f\n", pIRec->value, pIRec->intensity); - } - } -#endif /* ALLDEBUG */ - } - - Xfree ((char *)property_return); - - /* Free the old memory and use the new structure created. */ - LINEAR_RGB_FreeSCCData(pPerScrnInfo->screenData); - - pPerScrnInfo->functionSet = (XPointer) &XcmsLinearRGBFunctionSet; - - pPerScrnInfo->screenData = (XPointer) pScreenData; - - pPerScrnInfo->state = XcmsInitSuccess; - - return(XcmsSuccess); - -FreeBlueTblElements: - Xfree((char *)pScreenData->pBlueTbl->pBase); - -FreeBlueTbl: - Xfree((char *)pScreenData->pBlueTbl); - -FreeGreenTblElements: - Xfree((char *)pScreenData->pBlueTbl->pBase); - -FreeGreenTbl: - Xfree((char *)pScreenData->pGreenTbl); - -FreeRedTblElements: - Xfree((char *)pScreenData->pRedTbl->pBase); - -FreeRedTbl: - Xfree((char *)pScreenData->pRedTbl); - -FreeSCCData: - Xfree((char *)pScreenData); - pPerScrnInfo->state = XcmsInitNone; - return(XcmsFailure); -} - - -/* - * NAME - * LINEAR_RGB_FreeSCCData() - * - * SYNOPSIS - */ -static void -LINEAR_RGB_FreeSCCData( - XPointer pScreenDataTemp) -/* - * DESCRIPTION - * - * RETURNS - * 0 if failed. - * 1 if succeeded with no modifications. - * - */ -{ - LINEAR_RGB_SCCData *pScreenData = (LINEAR_RGB_SCCData *) pScreenDataTemp; - - if (pScreenData && pScreenData != &Default_RGB_SCCData) { - if (pScreenData->pRedTbl) { - if (pScreenData->pGreenTbl) { - if (pScreenData->pRedTbl->pBase != - pScreenData->pGreenTbl->pBase) { - if (pScreenData->pGreenTbl->pBase) { - Xfree ((char *)pScreenData->pGreenTbl->pBase); - } - } - if (pScreenData->pGreenTbl != pScreenData->pRedTbl) { - Xfree ((char *)pScreenData->pGreenTbl); - } - } - if (pScreenData->pBlueTbl) { - if (pScreenData->pRedTbl->pBase != - pScreenData->pBlueTbl->pBase) { - if (pScreenData->pBlueTbl->pBase) { - Xfree ((char *)pScreenData->pBlueTbl->pBase); - } - } - if (pScreenData->pBlueTbl != pScreenData->pRedTbl) { - Xfree ((char *)pScreenData->pBlueTbl); - } - } - if (pScreenData->pRedTbl->pBase) { - Xfree ((char *)pScreenData->pRedTbl->pBase); - } - Xfree ((char *)pScreenData->pRedTbl); - } - Xfree ((char *)pScreenData); - } -} - - - -/************************************************************************ - * * - * API PRIVATE ROUTINES * - * * - ************************************************************************/ - -/* - * NAME - * _XcmsGetTableType0 - * - * SYNOPSIS - */ -static Status -_XcmsGetTableType0( - IntensityTbl *pTbl, - int format, - char **pChar, - unsigned long *pCount) -/* - * DESCRIPTION - * - * RETURNS - * XcmsFailure if failed. - * XcmsSuccess if succeeded. - * - */ -{ - unsigned int nElements; - IntensityRec *pIRec; - - nElements = pTbl->nEntries = - _XcmsGetElement(format, pChar, pCount) + 1; - if (!(pIRec = pTbl->pBase = (IntensityRec *) - Xcalloc (nElements, sizeof(IntensityRec)))) { - return(XcmsFailure); - } - - switch (format) { - case 8: - for (; nElements--; pIRec++) { - /* 0xFFFF/0xFF = 0x101 */ - pIRec->value = _XcmsGetElement (format, pChar, pCount) * 0x101; - pIRec->intensity = - _XcmsGetElement (format, pChar, pCount) / (XcmsFloat)255.0; - } - break; - case 16: - for (; nElements--; pIRec++) { - pIRec->value = _XcmsGetElement (format, pChar, pCount); - pIRec->intensity = _XcmsGetElement (format, pChar, pCount) - / (XcmsFloat)65535.0; - } - break; - case 32: - for (; nElements--; pIRec++) { - pIRec->value = _XcmsGetElement (format, pChar, pCount); - pIRec->intensity = _XcmsGetElement (format, pChar, pCount) - / (XcmsFloat)4294967295.0; - } - break; - default: - return(XcmsFailure); - } - return(XcmsSuccess); -} - - -/* - * NAME - * _XcmsGetTableType1 - * - * SYNOPSIS - */ -static Status -_XcmsGetTableType1( - IntensityTbl *pTbl, - int format, - char **pChar, - unsigned long *pCount) -/* - * DESCRIPTION - * - * RETURNS - * XcmsFailure if failed. - * XcmsSuccess if succeeded. - * - */ -{ - int count; - unsigned int max_index; - IntensityRec *pIRec; - - max_index = _XcmsGetElement(format, pChar, pCount); - pTbl->nEntries = max_index + 1; - if (!(pIRec = pTbl->pBase = (IntensityRec *) - Xcalloc (max_index+1, sizeof(IntensityRec)))) { - return(XcmsFailure); - } - - switch (format) { - case 8: - for (count = 0; count < max_index+1; count++, pIRec++) { - pIRec->value = (count * 65535) / max_index; - pIRec->intensity = _XcmsGetElement (format, pChar, pCount) - / (XcmsFloat)255.0; - } - break; - case 16: - for (count = 0; count < max_index+1; count++, pIRec++) { - pIRec->value = (count * 65535) / max_index; - pIRec->intensity = _XcmsGetElement (format, pChar, pCount) - / (XcmsFloat)65535.0; - } - break; - case 32: - for (count = 0; count < max_index+1; count++, pIRec++) { - pIRec->value = (count * 65535) / max_index; - pIRec->intensity = _XcmsGetElement (format, pChar, pCount) - / (XcmsFloat)4294967295.0; - } - break; - default: - return(XcmsFailure); - } - - return(XcmsSuccess); -} - - -/* - * NAME - * ValueCmp - * - * SYNOPSIS - */ -static int -_XcmsValueCmp( - IntensityRec *p1, IntensityRec *p2) -/* - * DESCRIPTION - * Compares the value component of two IntensityRec - * structures. - * - * RETURNS - * 0 if p1->value is equal to p2->value - * < 0 if p1->value is less than p2->value - * > 0 if p1->value is greater than p2->value - * - */ -{ - return (p1->value - p2->value); -} - - -/* - * NAME - * IntensityCmp - * - * SYNOPSIS - */ -static int -_XcmsIntensityCmp( - IntensityRec *p1, IntensityRec *p2) -/* - * DESCRIPTION - * Compares the intensity component of two IntensityRec - * structures. - * - * RETURNS - * 0 if equal; - * < 0 if first precedes second - * > 0 if first succeeds second - * - */ -{ - if (p1->intensity < p2->intensity) { - return (-1); - } - if (p1->intensity > p2->intensity) { - return (XcmsSuccess); - } - return (XcmsFailure); -} - -/* - * NAME - * ValueInterpolation - * - * SYNOPSIS - */ -/* ARGSUSED */ -static int -_XcmsValueInterpolation( - IntensityRec *key, IntensityRec *lo, IntensityRec *hi, IntensityRec *answer, - int bitsPerRGB) -/* - * DESCRIPTION - * Based on a given value, performs a linear interpolation - * on the intensities between two IntensityRec structures. - * Note that the bitsPerRGB parameter is ignored. - * - * RETURNS - * Returns 0 if failed; otherwise non-zero. - */ -{ - XcmsFloat ratio; - - ratio = ((XcmsFloat)key->value - (XcmsFloat)lo->value) / - ((XcmsFloat)hi->value - (XcmsFloat)lo->value); - answer->value = key->value; - answer->intensity = (hi->intensity - lo->intensity) * ratio; - answer->intensity += lo->intensity; - return (XcmsSuccess); -} - -/* - * NAME - * IntensityInterpolation - * - * SYNOPSIS - */ -static int -_XcmsIntensityInterpolation( - IntensityRec *key, IntensityRec *lo, IntensityRec *hi, IntensityRec *answer, - int bitsPerRGB) -/* - * DESCRIPTION - * Based on a given intensity, performs a linear interpolation - * on the values between two IntensityRec structures. - * The bitsPerRGB parameter is necessary to perform rounding - * to the correct number of significant bits. - * - * RETURNS - * Returns 0 if failed; otherwise non-zero. - */ -{ - XcmsFloat ratio; - long target, up, down; - int shift = 16 - bitsPerRGB; - int max_color = (1 << bitsPerRGB) - 1; - - ratio = (key->intensity - lo->intensity) / (hi->intensity - lo->intensity); - answer->intensity = key->intensity; - target = hi->value - lo->value; - target *= ratio; - target += lo->value; - - /* - * Ok now, lets find the closest in respects to bits per RGB - */ - up = ((target >> shift) * 0xFFFF) / max_color; - if (up < target) { - down = up; - up = (MIN((down >> shift) + 1, max_color) * 0xFFFF) / max_color; - } else { - down = (MAX((up >> shift) - 1, 0) * 0xFFFF) / max_color; - } - answer->value = ((up - target) < (target - down) ? up : down); - answer->value &= MASK[bitsPerRGB]; - return (XcmsSuccess); -} - - - -typedef int (*comparProcp)( - char *p1, - char *p2); -typedef int (*interpolProcp)( - char *key, - char *lo, - char *hi, - char *answer, - int bitsPerRGB); - -/* - * NAME - * _XcmsTableSearch - * - * SYNOPSIS - */ -static int -_XcmsTableSearch( - char *key, - int bitsPerRGB, - char *base, - unsigned nel, - unsigned nKeyPtrSize, - int (*compar)( - char *p1, - char *p2), - int (*interpol)( - char *key, - char *lo, - char *hi, - char *answer, - int bitsPerRGB), - char *answer) - -/* - * DESCRIPTION - * A binary search through the specificied table. - * - * RETURNS - * Returns 0 if failed; otherwise non-zero. - * - */ -{ - char *hi, *lo, *mid, *last; - int result; - - last = hi = base + ((nel - 1) * nKeyPtrSize); - mid = lo = base; - - /* use only the significants bits, then scale into 16 bits */ - ((IntensityRec *)key)->value = ((unsigned long) - (((IntensityRec *)key)->value >> (16 - bitsPerRGB)) * 0xFFFF) - / ((1 << bitsPerRGB) - 1); - - /* Special case so that zero intensity always maps to zero value */ - if ((*compar) (key,lo) <= 0) { - memcpy (answer, lo, nKeyPtrSize); - ((IntensityRec *)answer)->value &= MASK[bitsPerRGB]; - return XcmsSuccess; - } - while (mid != last) { - last = mid; - mid = lo + (((unsigned)(hi - lo) / nKeyPtrSize) / 2) * nKeyPtrSize; - result = (*compar) (key, mid); - if (result == 0) { - - memcpy(answer, mid, nKeyPtrSize); - ((IntensityRec *)answer)->value &= MASK[bitsPerRGB]; - return (XcmsSuccess); - } else if (result < 0) { - hi = mid; - } else { - lo = mid; - } - } - - /* - * If we got to here, we didn't find a solution, so we - * need to apply interpolation. - */ - return ((*interpol)(key, lo, hi, answer, bitsPerRGB)); -} - - -/* - * NAME - * _XcmsMatVec - multiply a 3 x 3 by a 3 x 1 vector - * - * SYNOPSIS - */ -static void _XcmsMatVec( - XcmsFloat *pMat, XcmsFloat *pIn, XcmsFloat *pOut) -/* - * DESCRIPTION - * Multiply the passed vector by the passed matrix to return a - * vector. Matrix is 3x3, vectors are of length 3. - * - * RETURNS - * void - */ -{ - int i, j; - - for (i = 0; i < 3; i++) { - pOut[i] = 0.0; - for (j = 0; j < 3; j++) - pOut[i] += *(pMat+(i*3)+j) * pIn[j]; - } -} - - -/************************************************************************ - * * - * PUBLIC ROUTINES * - * * - ************************************************************************/ - - -/* - * NAME - * XcmsLRGB_RGB_ParseString - * - * SYNOPSIS - */ -static int -XcmsLRGB_RGB_ParseString( - register char *spec, - XcmsColor *pColor) -/* - * DESCRIPTION - * This routines takes a string and attempts to convert - * it into a XcmsColor structure with XcmsRGBFormat. - * - * RETURNS - * 0 if failed, non-zero otherwise. - */ -{ - register int n, i; - unsigned short r, g, b; - char c; - char *pchar; - unsigned short *pShort; - - /* - * Check for old # format - */ - if (*spec == '#') { - /* - * Attempt to parse the value portion. - */ - spec++; - n = strlen(spec); - if (n != 3 && n != 6 && n != 9 && n != 12) { - return(XcmsFailure); - } - - n /= 3; - g = b = 0; - do { - r = g; - g = b; - b = 0; - for (i = n; --i >= 0; ) { - c = *spec++; - b <<= 4; - if (c >= '0' && c <= '9') - b |= c - '0'; - /* assume string in lowercase - else if (c >= 'A' && c <= 'F') - b |= c - ('A' - 10); - */ - else if (c >= 'a' && c <= 'f') - b |= c - ('a' - 10); - else return (XcmsFailure); - } - } while (*spec != '\0'); - - /* - * Succeeded ! - */ - n <<= 2; - n = 16 - n; - /* shift instead of scale, to match old broken semantics */ - pColor->spec.RGB.red = r << n; - pColor->spec.RGB.green = g << n; - pColor->spec.RGB.blue = b << n; - } else { - if ((pchar = strchr(spec, ':')) == NULL) { - return(XcmsFailure); - } - n = (int)(pchar - spec); - - /* - * Check for proper prefix. - */ - if (strncmp(spec, _XcmsRGB_prefix, n) != 0) { - return(XcmsFailure); - } - - /* - * Attempt to parse the value portion. - */ - spec += (n + 1); - pShort = &pColor->spec.RGB.red; - for (i = 0; i < 3; i++, pShort++, spec++) { - n = 0; - *pShort = 0; - while (*spec != '/' && *spec != '\0') { - if (++n > 4) { - return(XcmsFailure); - } - c = *spec++; - *pShort <<= 4; - if (c >= '0' && c <= '9') - *pShort |= c - '0'; - /* assume string in lowercase - else if (c >= 'A' && c <= 'F') - *pShort |= c - ('A' - 10); - */ - else if (c >= 'a' && c <= 'f') - *pShort |= c - ('a' - 10); - else return (XcmsFailure); - } - if (n == 0) - return (XcmsFailure); - if (n < 4) { - *pShort = ((unsigned long)*pShort * 0xFFFF) / ((1 << n*4) - 1); - } - } - } - pColor->format = XcmsRGBFormat; - pColor->pixel = 0; - return (XcmsSuccess); -} - - -/* - * NAME - * XcmsLRGB_RGBi_ParseString - * - * SYNOPSIS - */ -static int -XcmsLRGB_RGBi_ParseString( - register char *spec, - XcmsColor *pColor) -/* - * DESCRIPTION - * This routines takes a string and attempts to convert - * it into a XcmsColor structure with XcmsRGBiFormat. - * The assumed RGBi string syntax is: - * RGBi:<r>/<g>/<b> - * Where r, g, and b are in string input format for floats - * consisting of: - * a. an optional sign - * b. a string of numbers possibly containing a decimal point, - * c. an optional exponent field containing an 'E' or 'e' - * followed by a possibly signed integer string. - * - * RETURNS - * 0 if failed, non-zero otherwise. - */ -{ - int n; - char *pchar; - - if ((pchar = strchr(spec, ':')) == NULL) { - return(XcmsFailure); - } - n = (int)(pchar - spec); - - /* - * Check for proper prefix. - */ - if (strncmp(spec, _XcmsRGBi_prefix, n) != 0) { - return(XcmsFailure); - } - - /* - * Attempt to parse the value portion. - */ - if (sscanf(spec + n + 1, "%lf/%lf/%lf", - &pColor->spec.RGBi.red, - &pColor->spec.RGBi.green, - &pColor->spec.RGBi.blue) != 3) { - char *s; /* Maybe failed due to locale */ - int f; - if ((s = strdup(spec))) { - for (f = 0; s[f]; ++f) - if (s[f] == '.') - s[f] = ','; - else if (s[f] == ',') - s[f] = '.'; - if (sscanf(s + n + 1, "%lf/%lf/%lf", - &pColor->spec.RGBi.red, - &pColor->spec.RGBi.green, - &pColor->spec.RGBi.blue) != 3) { - free(s); - return(XcmsFailure); - } - free(s); - } else - return(XcmsFailure); - } - - /* - * Succeeded ! - */ - pColor->format = XcmsRGBiFormat; - pColor->pixel = 0; - return (XcmsSuccess); -} - - -/* - * NAME - * XcmsCIEXYZToRGBi - convert CIE XYZ to RGB - * - * SYNOPSIS - */ -/* ARGSUSED */ -Status -XcmsCIEXYZToRGBi( - XcmsCCC ccc, - XcmsColor *pXcmsColors_in_out,/* pointer to XcmsColors to convert */ - unsigned int nColors, /* Number of colors */ - Bool *pCompressed) /* pointer to an array of Bool */ -/* - * DESCRIPTION - * Converts color specifications in an array of XcmsColor - * structures from RGB format to RGBi format. - * - * RETURNS - * XcmsFailure if failed, - * XcmsSuccess if succeeded without gamut compression. - * XcmsSuccessWithCompression if succeeded with gamut - * compression. - */ -{ - LINEAR_RGB_SCCData *pScreenData; - XcmsFloat tmp[3]; - int hasCompressed = 0; - unsigned int i; - XcmsColor *pColor = pXcmsColors_in_out; - - if (ccc == NULL) { - return(XcmsFailure); - } - - pScreenData = (LINEAR_RGB_SCCData *)ccc->pPerScrnInfo->screenData; - - /* - * XcmsColors should be White Point Adjusted, if necessary, by now! - */ - - /* - * NEW!!! for extended gamut compression - * - * 1. Need to zero out pCompressed - * - * 2. Need to save initial address of pColor - * - * 3. Need to save initial address of pCompressed - */ - - for (i = 0; i < nColors; i++) { - - /* Make sure format is XcmsCIEXYZFormat */ - if (pColor->format != XcmsCIEXYZFormat) { - return(XcmsFailure); - } - - /* Multiply [A]-1 * [XYZ] to get RGB intensity */ - _XcmsMatVec((XcmsFloat *) pScreenData->XYZtoRGBmatrix, - (XcmsFloat *) &pColor->spec, tmp); - - if ((MIN3 (tmp[0], tmp[1], tmp[2]) < -EPS) || - (MAX3 (tmp[0], tmp[1], tmp[2]) > (1.0 + EPS))) { - - /* - * RGBi out of screen's gamut - */ - - if (ccc->gamutCompProc == NULL) { - /* - * Aha!! Here's that little trick that will allow - * gamut compression routines to get the out of bound - * RGBi. - */ - memcpy((char *)&pColor->spec, (char *)tmp, sizeof(tmp)); - pColor->format = XcmsRGBiFormat; - return(XcmsFailure); - } else if ((*ccc->gamutCompProc)(ccc, pXcmsColors_in_out, nColors, - i, pCompressed) == 0) { - return(XcmsFailure); - } - - /* - * The gamut compression function should return colors in CIEXYZ - * Also check again to if the new color is within gamut. - */ - if (pColor->format != XcmsCIEXYZFormat) { - return(XcmsFailure); - } - _XcmsMatVec((XcmsFloat *) pScreenData->XYZtoRGBmatrix, - (XcmsFloat *) &pColor->spec, tmp); - if ((MIN3 (tmp[0], tmp[1], tmp[2]) < -EPS) || - (MAX3 (tmp[0], tmp[1], tmp[2]) > (1.0 + EPS))) { - return(XcmsFailure); - } - hasCompressed++; - } - memcpy((char *)&pColor->spec, (char *)tmp, sizeof(tmp)); - /* These if statements are done to ensure the fudge factor is */ - /* is taken into account. */ - if (pColor->spec.RGBi.red < 0.0) { - pColor->spec.RGBi.red = 0.0; - } else if (pColor->spec.RGBi.red > 1.0) { - pColor->spec.RGBi.red = 1.0; - } - if (pColor->spec.RGBi.green < 0.0) { - pColor->spec.RGBi.green = 0.0; - } else if (pColor->spec.RGBi.green > 1.0) { - pColor->spec.RGBi.green = 1.0; - } - if (pColor->spec.RGBi.blue < 0.0) { - pColor->spec.RGBi.blue = 0.0; - } else if (pColor->spec.RGBi.blue > 1.0) { - pColor->spec.RGBi.blue = 1.0; - } - (pColor++)->format = XcmsRGBiFormat; - } - return (hasCompressed ? XcmsSuccessWithCompression : XcmsSuccess); -} - - -/* - * NAME - * LINEAR_RGBi_to_CIEXYZ - convert RGBi to CIEXYZ - * - * SYNOPSIS - */ -/* ARGSUSED */ -Status -XcmsRGBiToCIEXYZ( - XcmsCCC ccc, - XcmsColor *pXcmsColors_in_out,/* pointer to XcmsColors to convert */ - unsigned int nColors, /* Number of colors */ - Bool *pCompressed) /* pointer to a bit array */ -/* - * DESCRIPTION - * Converts color specifications in an array of XcmsColor - * structures from RGBi format to CIEXYZ format. - * - * RETURNS - * XcmsFailure if failed, - * XcmsSuccess if succeeded. - */ -{ - LINEAR_RGB_SCCData *pScreenData; - XcmsFloat tmp[3]; - - /* - * pCompressed ignored in this function. - */ - - if (ccc == NULL) { - return(XcmsFailure); - } - - pScreenData = (LINEAR_RGB_SCCData *)ccc->pPerScrnInfo->screenData; - - /* - * XcmsColors should be White Point Adjusted, if necessary, by now! - */ - - while (nColors--) { - - /* Multiply [A]-1 * [XYZ] to get RGB intensity */ - _XcmsMatVec((XcmsFloat *) pScreenData->RGBtoXYZmatrix, - (XcmsFloat *) &pXcmsColors_in_out->spec, tmp); - - memcpy((char *)&pXcmsColors_in_out->spec, (char *)tmp, sizeof(tmp)); - (pXcmsColors_in_out++)->format = XcmsCIEXYZFormat; - } - return(XcmsSuccess); -} - - -/* - * NAME - * XcmsRGBiToRGB - * - * SYNOPSIS - */ -/* ARGSUSED */ -Status -XcmsRGBiToRGB( - XcmsCCC ccc, - XcmsColor *pXcmsColors_in_out,/* pointer to XcmsColors to convert */ - unsigned int nColors, /* Number of colors */ - Bool *pCompressed) /* pointer to a bit array */ -/* - * DESCRIPTION - * Converts color specifications in an array of XcmsColor - * structures from RGBi format to RGB format. - * - * RETURNS - * XcmsFailure if failed, - * XcmsSuccess if succeeded without gamut compression. - * XcmsSuccessWithCompression if succeeded with gamut - * compression. - */ -{ - LINEAR_RGB_SCCData *pScreenData; - XcmsRGB tmpRGB; - IntensityRec keyIRec, answerIRec; - - /* - * pCompressed ignored in this function. - */ - - if (ccc == NULL) { - return(XcmsFailure); - } - - pScreenData = (LINEAR_RGB_SCCData *)ccc->pPerScrnInfo->screenData; - - while (nColors--) { - - /* Make sure format is XcmsRGBiFormat */ - if (pXcmsColors_in_out->format != XcmsRGBiFormat) { - return(XcmsFailure); - } - - keyIRec.intensity = pXcmsColors_in_out->spec.RGBi.red; - if (!_XcmsTableSearch((char *)&keyIRec, ccc->visual->bits_per_rgb, - (char *)pScreenData->pRedTbl->pBase, - (unsigned)pScreenData->pRedTbl->nEntries, - (unsigned)sizeof(IntensityRec), - (comparProcp)_XcmsIntensityCmp, (interpolProcp)_XcmsIntensityInterpolation, (char *)&answerIRec)) { - return(XcmsFailure); - } - tmpRGB.red = answerIRec.value; - - keyIRec.intensity = pXcmsColors_in_out->spec.RGBi.green; - if (!_XcmsTableSearch((char *)&keyIRec, ccc->visual->bits_per_rgb, - (char *)pScreenData->pGreenTbl->pBase, - (unsigned)pScreenData->pGreenTbl->nEntries, - (unsigned)sizeof(IntensityRec), - (comparProcp)_XcmsIntensityCmp, (interpolProcp)_XcmsIntensityInterpolation, (char *)&answerIRec)) { - return(XcmsFailure); - } - tmpRGB.green = answerIRec.value; - - keyIRec.intensity = pXcmsColors_in_out->spec.RGBi.blue; - if (!_XcmsTableSearch((char *)&keyIRec, ccc->visual->bits_per_rgb, - (char *)pScreenData->pBlueTbl->pBase, - (unsigned)pScreenData->pBlueTbl->nEntries, - (unsigned)sizeof(IntensityRec), - (comparProcp)_XcmsIntensityCmp, (interpolProcp)_XcmsIntensityInterpolation, (char *)&answerIRec)) { - return(XcmsFailure); - } - tmpRGB.blue = answerIRec.value; - - memcpy((char *)&pXcmsColors_in_out->spec, (char *)&tmpRGB, sizeof(XcmsRGB)); - (pXcmsColors_in_out++)->format = XcmsRGBFormat; - } - return(XcmsSuccess); -} - - -/* - * NAME - * XcmsRGBToRGBi - * - * SYNOPSIS - */ -/* ARGSUSED */ -Status -XcmsRGBToRGBi( - XcmsCCC ccc, - XcmsColor *pXcmsColors_in_out,/* pointer to XcmsColors to convert */ - unsigned int nColors, /* Number of colors */ - Bool *pCompressed) /* pointer to a bit array */ -/* - * DESCRIPTION - * Converts color specifications in an array of XcmsColor - * structures from RGB format to RGBi format. - * - * RETURNS - * XcmsFailure if failed, - * XcmsSuccess if succeeded. - */ -{ - LINEAR_RGB_SCCData *pScreenData; - XcmsRGBi tmpRGBi; - IntensityRec keyIRec, answerIRec; - - /* - * pCompressed ignored in this function. - */ - - if (ccc == NULL) { - return(XcmsFailure); - } - - pScreenData = (LINEAR_RGB_SCCData *)ccc->pPerScrnInfo->screenData; - - while (nColors--) { - - /* Make sure format is XcmsRGBFormat */ - if (pXcmsColors_in_out->format != XcmsRGBFormat) { - return(XcmsFailure); - } - - keyIRec.value = pXcmsColors_in_out->spec.RGB.red; - if (!_XcmsTableSearch((char *)&keyIRec, ccc->visual->bits_per_rgb, - (char *)pScreenData->pRedTbl->pBase, - (unsigned)pScreenData->pRedTbl->nEntries, - (unsigned)sizeof(IntensityRec), - (comparProcp)_XcmsValueCmp, (interpolProcp)_XcmsValueInterpolation, (char *)&answerIRec)) { - return(XcmsFailure); - } - tmpRGBi.red = answerIRec.intensity; - - keyIRec.value = pXcmsColors_in_out->spec.RGB.green; - if (!_XcmsTableSearch((char *)&keyIRec, ccc->visual->bits_per_rgb, - (char *)pScreenData->pGreenTbl->pBase, - (unsigned)pScreenData->pGreenTbl->nEntries, - (unsigned)sizeof(IntensityRec), - (comparProcp)_XcmsValueCmp, (interpolProcp)_XcmsValueInterpolation, (char *)&answerIRec)) { - return(XcmsFailure); - } - tmpRGBi.green = answerIRec.intensity; - - keyIRec.value = pXcmsColors_in_out->spec.RGB.blue; - if (!_XcmsTableSearch((char *)&keyIRec, ccc->visual->bits_per_rgb, - (char *)pScreenData->pBlueTbl->pBase, - (unsigned)pScreenData->pBlueTbl->nEntries, - (unsigned)sizeof(IntensityRec), - (comparProcp)_XcmsValueCmp, (interpolProcp)_XcmsValueInterpolation, (char *)&answerIRec)) { - return(XcmsFailure); - } - tmpRGBi.blue = answerIRec.intensity; - - memcpy((char *)&pXcmsColors_in_out->spec, (char *)&tmpRGBi, sizeof(XcmsRGBi)); - (pXcmsColors_in_out++)->format = XcmsRGBiFormat; - } - return(XcmsSuccess); -} - -/* - * NAME - * _XcmsInitScrnDefaultInfo - * - * SYNOPSIS - */ -/* ARGSUSED */ -int -_XcmsLRGB_InitScrnDefault( - Display *dpy, - int screenNumber, - XcmsPerScrnInfo *pPerScrnInfo) -/* - * DESCRIPTION - * Given a display and screen number, this routine attempts - * to initialize the Xcms per Screen Info structure - * (XcmsPerScrnInfo) with defaults. - * - * RETURNS - * Returns zero if initialization failed; non-zero otherwise. - */ -{ - pPerScrnInfo->screenData = (XPointer)&Default_RGB_SCCData; - pPerScrnInfo->screenWhitePt.spec.CIEXYZ.X = - Default_RGB_SCCData.RGBtoXYZmatrix[0][0] + - Default_RGB_SCCData.RGBtoXYZmatrix[0][1] + - Default_RGB_SCCData.RGBtoXYZmatrix[0][2]; - pPerScrnInfo->screenWhitePt.spec.CIEXYZ.Y = - Default_RGB_SCCData.RGBtoXYZmatrix[1][0] + - Default_RGB_SCCData.RGBtoXYZmatrix[1][1] + - Default_RGB_SCCData.RGBtoXYZmatrix[1][2]; - pPerScrnInfo->screenWhitePt.spec.CIEXYZ.Z = - Default_RGB_SCCData.RGBtoXYZmatrix[2][0] + - Default_RGB_SCCData.RGBtoXYZmatrix[2][1] + - Default_RGB_SCCData.RGBtoXYZmatrix[2][2]; - if ((pPerScrnInfo->screenWhitePt.spec.CIEXYZ.Y < (1.0 - EPS) ) - || (pPerScrnInfo->screenWhitePt.spec.CIEXYZ.Y > (1.0 + EPS))) { - pPerScrnInfo->screenData = (XPointer)NULL; - pPerScrnInfo->state = XcmsInitNone; - return(0); - } - pPerScrnInfo->screenWhitePt.spec.CIEXYZ.Y = 1.0; - pPerScrnInfo->screenWhitePt.format = XcmsCIEXYZFormat; - pPerScrnInfo->screenWhitePt.pixel = 0; - pPerScrnInfo->functionSet = (XPointer)&XcmsLinearRGBFunctionSet; - pPerScrnInfo->state = XcmsInitFailure; /* default initialization */ - return(1); -} +
+/*
+ * 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.
+ *
+ *
+ * NAME
+ * XcmsLRGB.c
+ *
+ * DESCRIPTION
+ * This file contains the conversion routines:
+ * 1. CIE XYZ to RGB intensity
+ * 2. RGB intensity to device RGB
+ * 3. device RGB to RGB intensity
+ * 4. RGB intensity to CIE XYZ
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <stdio.h>
+#include <X11/Xos.h>
+#include <X11/Xatom.h>
+#include "Xlibint.h"
+#include "Xcmsint.h"
+#include "Cv.h"
+
+/*
+ * LOCAL DEFINES
+ * #define declarations local to this package.
+ */
+#define EPS 0.001
+#ifndef MIN
+#define MIN(x,y) ((x) > (y) ? (y) : (x))
+#endif /* MIN */
+#ifndef MAX
+#define MAX(x,y) ((x) > (y) ? (x) : (y))
+#endif /* MAX */
+#ifndef MIN3
+#define MIN3(x,y,z) ((x) > (MIN((y), (z))) ? (MIN((y), (z))) : (x))
+#endif /* MIN3 */
+#ifndef MAX3
+#define MAX3(x,y,z) ((x) > (MAX((y), (z))) ? (x) : (MAX((y), (z))))
+#endif /* MAX3 */
+
+/*
+ * LOCAL TYPEDEFS
+ * typedefs local to this package (for use with local vars).
+ *
+ */
+
+/*
+ * FORWARD DECLARATIONS
+ */
+static void LINEAR_RGB_FreeSCCData(XPointer pScreenDataTemp);
+static int LINEAR_RGB_InitSCCData(Display *dpy,
+ int screenNumber, XcmsPerScrnInfo *pPerScrnInfo);
+static int XcmsLRGB_RGB_ParseString(register char *spec, XcmsColor *pColor);
+static int XcmsLRGB_RGBi_ParseString(register char *spec, XcmsColor *pColor);
+static Status
+_XcmsGetTableType0(
+ IntensityTbl *pTbl,
+ int format,
+ char **pChar,
+ unsigned long *pCount);
+static Status
+_XcmsGetTableType1(
+ IntensityTbl *pTbl,
+ int format,
+ char **pChar,
+ unsigned long *pCount);
+
+/*
+ * LOCALS VARIABLES
+ * Variables local to this package.
+ * Usage example:
+ * static int ExampleLocalVar;
+ */
+
+static unsigned short const MASK[17] = {
+ 0x0000, /* 0 bitsPerRGB */
+ 0x8000, /* 1 bitsPerRGB */
+ 0xc000, /* 2 bitsPerRGB */
+ 0xe000, /* 3 bitsPerRGB */
+ 0xf000, /* 4 bitsPerRGB */
+ 0xf800, /* 5 bitsPerRGB */
+ 0xfc00, /* 6 bitsPerRGB */
+ 0xfe00, /* 7 bitsPerRGB */
+ 0xff00, /* 8 bitsPerRGB */
+ 0xff80, /* 9 bitsPerRGB */
+ 0xffc0, /* 10 bitsPerRGB */
+ 0xffe0, /* 11 bitsPerRGB */
+ 0xfff0, /* 12 bitsPerRGB */
+ 0xfff8, /* 13 bitsPerRGB */
+ 0xfffc, /* 14 bitsPerRGB */
+ 0xfffe, /* 15 bitsPerRGB */
+ 0xffff /* 16 bitsPerRGB */
+};
+
+
+ /*
+ * A NULL terminated array of function pointers that when applied
+ * in series will convert an XcmsColor structure from XcmsRGBFormat
+ * to XcmsCIEXYZFormat.
+ */
+static XcmsConversionProc Fl_RGB_to_CIEXYZ[] = {
+ (XcmsConversionProc)XcmsRGBToRGBi,
+ (XcmsConversionProc)XcmsRGBiToCIEXYZ,
+ NULL
+};
+
+ /*
+ * A NULL terminated array of function pointers that when applied
+ * in series will convert an XcmsColor structure from XcmsCIEXYZFormat
+ * to XcmsRGBFormat.
+ */
+static XcmsConversionProc Fl_CIEXYZ_to_RGB[] = {
+ (XcmsConversionProc)XcmsCIEXYZToRGBi,
+ (XcmsConversionProc)XcmsRGBiToRGB,
+ NULL
+};
+
+ /*
+ * A NULL terminated array of function pointers that when applied
+ * in series will convert an XcmsColor structure from XcmsRGBiFormat
+ * to XcmsCIEXYZFormat.
+ */
+static XcmsConversionProc Fl_RGBi_to_CIEXYZ[] = {
+ (XcmsConversionProc)XcmsRGBiToCIEXYZ,
+ NULL
+};
+
+ /*
+ * A NULL terminated array of function pointers that when applied
+ * in series will convert an XcmsColor structure from XcmsCIEXYZFormat
+ * to XcmsRGBiFormat.
+ */
+static XcmsConversionProc Fl_CIEXYZ_to_RGBi[] = {
+ (XcmsConversionProc)XcmsCIEXYZToRGBi,
+ NULL
+};
+
+ /*
+ * RGBi Color Spaces
+ */
+XcmsColorSpace XcmsRGBiColorSpace =
+ {
+ _XcmsRGBi_prefix, /* prefix */
+ XcmsRGBiFormat, /* id */
+ XcmsLRGB_RGBi_ParseString, /* parseString */
+ Fl_RGBi_to_CIEXYZ, /* to_CIEXYZ */
+ Fl_CIEXYZ_to_RGBi, /* from_CIEXYZ */
+ 1
+ };
+
+ /*
+ * RGB Color Spaces
+ */
+XcmsColorSpace XcmsRGBColorSpace =
+ {
+ _XcmsRGB_prefix, /* prefix */
+ XcmsRGBFormat, /* id */
+ XcmsLRGB_RGB_ParseString, /* parseString */
+ Fl_RGB_to_CIEXYZ, /* to_CIEXYZ */
+ Fl_CIEXYZ_to_RGB, /* from_CIEXYZ */
+ 1
+ };
+
+ /*
+ * Device-Independent Color Spaces known to the
+ * LINEAR_RGB Screen Color Characteristics Function Set.
+ */
+static XcmsColorSpace *DDColorSpaces[] = {
+ &XcmsRGBColorSpace,
+ &XcmsRGBiColorSpace,
+ NULL
+};
+
+
+/*
+ * GLOBALS
+ * Variables declared in this package that are allowed
+ * to be used globally.
+ */
+
+ /*
+ * LINEAR_RGB Screen Color Characteristics Function Set.
+ */
+XcmsFunctionSet XcmsLinearRGBFunctionSet =
+ {
+ &DDColorSpaces[0], /* pDDColorSpaces */
+ LINEAR_RGB_InitSCCData, /* pInitScrnFunc */
+ LINEAR_RGB_FreeSCCData /* pFreeSCCData */
+ };
+
+/*
+ * DESCRIPTION
+ * Contents of Default SCCData should be replaced if other
+ * data should be used as default.
+ *
+ *
+ */
+
+/*
+ * NAME Tektronix 19" (Sony) CRT
+ * PART_NUMBER 119-2451-00
+ * MODEL Tek4300, Tek4800
+ */
+
+static IntensityRec const Default_RGB_RedTuples[] = {
+ /* {unsigned short value, XcmsFloat intensity} */
+ { 0x0000, 0.000000 },
+ { 0x0909, 0.000000 },
+ { 0x0a0a, 0.000936 },
+ { 0x0f0f, 0.001481 },
+ { 0x1414, 0.002329 },
+ { 0x1919, 0.003529 },
+ { 0x1e1e, 0.005127 },
+ { 0x2323, 0.007169 },
+ { 0x2828, 0.009699 },
+ { 0x2d2d, 0.012759 },
+ { 0x3232, 0.016392 },
+ { 0x3737, 0.020637 },
+ { 0x3c3c, 0.025533 },
+ { 0x4141, 0.031119 },
+ { 0x4646, 0.037431 },
+ { 0x4b4b, 0.044504 },
+ { 0x5050, 0.052373 },
+ { 0x5555, 0.061069 },
+ { 0x5a5a, 0.070624 },
+ { 0x5f5f, 0.081070 },
+ { 0x6464, 0.092433 },
+ { 0x6969, 0.104744 },
+ { 0x6e6e, 0.118026 },
+ { 0x7373, 0.132307 },
+ { 0x7878, 0.147610 },
+ { 0x7d7d, 0.163958 },
+ { 0x8282, 0.181371 },
+ { 0x8787, 0.199871 },
+ { 0x8c8c, 0.219475 },
+ { 0x9191, 0.240202 },
+ { 0x9696, 0.262069 },
+ { 0x9b9b, 0.285089 },
+ { 0xa0a0, 0.309278 },
+ { 0xa5a5, 0.334647 },
+ { 0xaaaa, 0.361208 },
+ { 0xafaf, 0.388971 },
+ { 0xb4b4, 0.417945 },
+ { 0xb9b9, 0.448138 },
+ { 0xbebe, 0.479555 },
+ { 0xc3c3, 0.512202 },
+ { 0xc8c8, 0.546082 },
+ { 0xcdcd, 0.581199 },
+ { 0xd2d2, 0.617552 },
+ { 0xd7d7, 0.655144 },
+ { 0xdcdc, 0.693971 },
+ { 0xe1e1, 0.734031 },
+ { 0xe6e6, 0.775322 },
+ { 0xebeb, 0.817837 },
+ { 0xf0f0, 0.861571 },
+ { 0xf5f5, 0.906515 },
+ { 0xfafa, 0.952662 },
+ { 0xffff, 1.000000 }
+};
+
+static IntensityRec const Default_RGB_GreenTuples[] = {
+ /* {unsigned short value, XcmsFloat intensity} */
+ { 0x0000, 0.000000 },
+ { 0x1313, 0.000000 },
+ { 0x1414, 0.000832 },
+ { 0x1919, 0.001998 },
+ { 0x1e1e, 0.003612 },
+ { 0x2323, 0.005736 },
+ { 0x2828, 0.008428 },
+ { 0x2d2d, 0.011745 },
+ { 0x3232, 0.015740 },
+ { 0x3737, 0.020463 },
+ { 0x3c3c, 0.025960 },
+ { 0x4141, 0.032275 },
+ { 0x4646, 0.039449 },
+ { 0x4b4b, 0.047519 },
+ { 0x5050, 0.056520 },
+ { 0x5555, 0.066484 },
+ { 0x5a5a, 0.077439 },
+ { 0x5f5f, 0.089409 },
+ { 0x6464, 0.102418 },
+ { 0x6969, 0.116485 },
+ { 0x6e6e, 0.131625 },
+ { 0x7373, 0.147853 },
+ { 0x7878, 0.165176 },
+ { 0x7d7d, 0.183604 },
+ { 0x8282, 0.203140 },
+ { 0x8787, 0.223783 },
+ { 0x8c8c, 0.245533 },
+ { 0x9191, 0.268384 },
+ { 0x9696, 0.292327 },
+ { 0x9b9b, 0.317351 },
+ { 0xa0a0, 0.343441 },
+ { 0xa5a5, 0.370580 },
+ { 0xaaaa, 0.398747 },
+ { 0xafaf, 0.427919 },
+ { 0xb4b4, 0.458068 },
+ { 0xb9b9, 0.489165 },
+ { 0xbebe, 0.521176 },
+ { 0xc3c3, 0.554067 },
+ { 0xc8c8, 0.587797 },
+ { 0xcdcd, 0.622324 },
+ { 0xd2d2, 0.657604 },
+ { 0xd7d7, 0.693588 },
+ { 0xdcdc, 0.730225 },
+ { 0xe1e1, 0.767459 },
+ { 0xe6e6, 0.805235 },
+ { 0xebeb, 0.843491 },
+ { 0xf0f0, 0.882164 },
+ { 0xf5f5, 0.921187 },
+ { 0xfafa, 0.960490 },
+ { 0xffff, 1.000000 }
+};
+
+static IntensityRec const Default_RGB_BlueTuples[] = {
+ /* {unsigned short value, XcmsFloat intensity} */
+ { 0x0000, 0.000000 },
+ { 0x0e0e, 0.000000 },
+ { 0x0f0f, 0.001341 },
+ { 0x1414, 0.002080 },
+ { 0x1919, 0.003188 },
+ { 0x1e1e, 0.004729 },
+ { 0x2323, 0.006766 },
+ { 0x2828, 0.009357 },
+ { 0x2d2d, 0.012559 },
+ { 0x3232, 0.016424 },
+ { 0x3737, 0.021004 },
+ { 0x3c3c, 0.026344 },
+ { 0x4141, 0.032489 },
+ { 0x4646, 0.039481 },
+ { 0x4b4b, 0.047357 },
+ { 0x5050, 0.056154 },
+ { 0x5555, 0.065903 },
+ { 0x5a5a, 0.076634 },
+ { 0x5f5f, 0.088373 },
+ { 0x6464, 0.101145 },
+ { 0x6969, 0.114968 },
+ { 0x6e6e, 0.129862 },
+ { 0x7373, 0.145841 },
+ { 0x7878, 0.162915 },
+ { 0x7d7d, 0.181095 },
+ { 0x8282, 0.200386 },
+ { 0x8787, 0.220791 },
+ { 0x8c8c, 0.242309 },
+ { 0x9191, 0.264937 },
+ { 0x9696, 0.288670 },
+ { 0x9b9b, 0.313499 },
+ { 0xa0a0, 0.339410 },
+ { 0xa5a5, 0.366390 },
+ { 0xaaaa, 0.394421 },
+ { 0xafaf, 0.423481 },
+ { 0xb4b4, 0.453547 },
+ { 0xb9b9, 0.484592 },
+ { 0xbebe, 0.516587 },
+ { 0xc3c3, 0.549498 },
+ { 0xc8c8, 0.583291 },
+ { 0xcdcd, 0.617925 },
+ { 0xd2d2, 0.653361 },
+ { 0xd7d7, 0.689553 },
+ { 0xdcdc, 0.726454 },
+ { 0xe1e1, 0.764013 },
+ { 0xe6e6, 0.802178 },
+ { 0xebeb, 0.840891 },
+ { 0xf0f0, 0.880093 },
+ { 0xf5f5, 0.919723 },
+ { 0xfafa, 0.959715 },
+ { 0xffff, 1.00000 }
+};
+
+static IntensityTbl Default_RGB_RedTbl = {
+ /* IntensityRec *pBase */
+ (IntensityRec *) Default_RGB_RedTuples,
+ /* unsigned int nEntries */
+ 52
+};
+
+static IntensityTbl Default_RGB_GreenTbl = {
+ /* IntensityRec *pBase */
+ (IntensityRec *)Default_RGB_GreenTuples,
+ /* unsigned int nEntries */
+ 50
+};
+
+static IntensityTbl Default_RGB_BlueTbl = {
+ /* IntensityRec *pBase */
+ (IntensityRec *)Default_RGB_BlueTuples,
+ /* unsigned int nEntries */
+ 51
+};
+
+static LINEAR_RGB_SCCData Default_RGB_SCCData = {
+ /* XcmsFloat XYZtoRGBmatrix[3][3] */
+ {
+ { 3.48340481253539000, -1.52176374927285200, -0.55923133354049780 },
+ {-1.07152751306193600, 1.96593795204372400, 0.03673691339553462 },
+ { 0.06351179790497788, -0.20020501000496480, 0.81070942031648220 }
+ },
+
+ /* XcmsFloat RGBtoXYZmatrix[3][3] */
+ {
+ { 0.38106149108714790, 0.32025712365352110, 0.24834578525933100 },
+ { 0.20729745115140850, 0.68054638776373240, 0.11215616108485920 },
+ { 0.02133944350088028, 0.14297193020246480, 1.24172892629665500 }
+ },
+
+ /* IntensityTbl *pRedTbl */
+ &Default_RGB_RedTbl,
+
+ /* IntensityTbl *pGreenTbl */
+ &Default_RGB_GreenTbl,
+
+ /* IntensityTbl *pBlueTbl */
+ &Default_RGB_BlueTbl
+};
+
+/************************************************************************
+ * *
+ * PRIVATE ROUTINES *
+ * *
+ ************************************************************************/
+
+/*
+ * NAME
+ * LINEAR_RGB_InitSCCData()
+ *
+ * SYNOPSIS
+ */
+static Status
+LINEAR_RGB_InitSCCData(
+ Display *dpy,
+ int screenNumber,
+ XcmsPerScrnInfo *pPerScrnInfo)
+/*
+ * DESCRIPTION
+ *
+ * RETURNS
+ * XcmsFailure if failed.
+ * XcmsSuccess if succeeded.
+ *
+ */
+{
+ Atom CorrectAtom = XInternAtom (dpy, XDCCC_CORRECT_ATOM_NAME, True);
+ Atom MatrixAtom = XInternAtom (dpy, XDCCC_MATRIX_ATOM_NAME, True);
+ int format_return, count, cType, nTables;
+ unsigned long nitems, nbytes_return;
+ char *property_return, *pChar;
+ XcmsFloat *pValue;
+#ifdef ALLDEBUG
+ IntensityRec *pIRec;
+#endif /* ALLDEBUG */
+ VisualID visualID;
+
+ LINEAR_RGB_SCCData *pScreenData, *pScreenDefaultData;
+ XcmsIntensityMap *pNewMap;
+
+ /*
+ * Allocate memory for pScreenData
+ */
+ if (!(pScreenData = pScreenDefaultData = (LINEAR_RGB_SCCData *)
+ Xcalloc (1, sizeof(LINEAR_RGB_SCCData)))) {
+ return(XcmsFailure);
+ }
+
+ /*
+ * 1. Get the XYZ->RGB and RGB->XYZ matrices
+ */
+
+ if (MatrixAtom == None ||
+ !_XcmsGetProperty (dpy, RootWindow(dpy, screenNumber), MatrixAtom,
+ &format_return, &nitems, &nbytes_return, &property_return) ||
+ nitems != 18 || format_return != 32) {
+ /*
+ * As per the XDCCC, there must be 18 data items and each must be
+ * in 32 bits !
+ */
+ goto FreeSCCData;
+
+ } else {
+
+ /*
+ * RGBtoXYZ and XYZtoRGB matrices
+ */
+ pValue = (XcmsFloat *) pScreenData;
+ pChar = property_return;
+ for (count = 0; count < 18; count++) {
+ *pValue++ = (long)_XcmsGetElement(format_return, &pChar,
+ &nitems) / (XcmsFloat)XDCCC_NUMBER;
+ }
+ Xfree ((char *)property_return);
+ pPerScrnInfo->screenWhitePt.spec.CIEXYZ.X =
+ pScreenData->RGBtoXYZmatrix[0][0] +
+ pScreenData->RGBtoXYZmatrix[0][1] +
+ pScreenData->RGBtoXYZmatrix[0][2];
+ pPerScrnInfo->screenWhitePt.spec.CIEXYZ.Y =
+ pScreenData->RGBtoXYZmatrix[1][0] +
+ pScreenData->RGBtoXYZmatrix[1][1] +
+ pScreenData->RGBtoXYZmatrix[1][2];
+ pPerScrnInfo->screenWhitePt.spec.CIEXYZ.Z =
+ pScreenData->RGBtoXYZmatrix[2][0] +
+ pScreenData->RGBtoXYZmatrix[2][1] +
+ pScreenData->RGBtoXYZmatrix[2][2];
+
+ /*
+ * Compute the Screen White Point
+ */
+ if ((pPerScrnInfo->screenWhitePt.spec.CIEXYZ.Y < (1.0 - EPS) )
+ || (pPerScrnInfo->screenWhitePt.spec.CIEXYZ.Y > (1.0 + EPS))) {
+ goto FreeSCCData;
+ } else {
+ pPerScrnInfo->screenWhitePt.spec.CIEXYZ.Y = 1.0;
+ }
+ pPerScrnInfo->screenWhitePt.format = XcmsCIEXYZFormat;
+ pPerScrnInfo->screenWhitePt.pixel = 0;
+
+#ifdef PDEBUG
+ printf ("RGB to XYZ Matrix values:\n");
+ printf (" %f %f %f\n %f %f %f\n %f %f %f\n",
+ pScreenData->RGBtoXYZmatrix[0][0],
+ pScreenData->RGBtoXYZmatrix[0][1],
+ pScreenData->RGBtoXYZmatrix[0][2],
+ pScreenData->RGBtoXYZmatrix[1][0],
+ pScreenData->RGBtoXYZmatrix[1][1],
+ pScreenData->RGBtoXYZmatrix[1][2],
+ pScreenData->RGBtoXYZmatrix[2][0],
+ pScreenData->RGBtoXYZmatrix[2][1],
+ pScreenData->RGBtoXYZmatrix[2][2]);
+ printf ("XYZ to RGB Matrix values:\n");
+ printf (" %f %f %f\n %f %f %f\n %f %f %f\n",
+ pScreenData->XYZtoRGBmatrix[0][0],
+ pScreenData->XYZtoRGBmatrix[0][1],
+ pScreenData->XYZtoRGBmatrix[0][2],
+ pScreenData->XYZtoRGBmatrix[1][0],
+ pScreenData->XYZtoRGBmatrix[1][1],
+ pScreenData->XYZtoRGBmatrix[1][2],
+ pScreenData->XYZtoRGBmatrix[2][0],
+ pScreenData->XYZtoRGBmatrix[2][1],
+ pScreenData->XYZtoRGBmatrix[2][2]);
+ printf ("Screen White Pt value: %f %f %f\n",
+ pPerScrnInfo->screenWhitePt.spec.CIEXYZ.X,
+ pPerScrnInfo->screenWhitePt.spec.CIEXYZ.Y,
+ pPerScrnInfo->screenWhitePt.spec.CIEXYZ.Z);
+#endif /* PDEBUG */
+ }
+
+ /*
+ * 2. Get the Intensity Profile
+ */
+ if (CorrectAtom == None ||
+ !_XcmsGetProperty (dpy, RootWindow(dpy, screenNumber), CorrectAtom,
+ &format_return, &nitems, &nbytes_return, &property_return)) {
+ Xfree ((char *)property_return);
+ goto FreeSCCData;
+ }
+
+ pChar = property_return;
+
+ while (nitems) {
+ switch (format_return) {
+ case 8:
+ /*
+ * Must have at least:
+ * VisualID0
+ * VisualID1
+ * VisualID2
+ * VisualID3
+ * type
+ * count
+ * length
+ * intensity1
+ * intensity2
+ */
+ if (nitems < 9) {
+ Xfree ((char *)property_return);
+ goto FreeSCCData;
+ }
+ count = 3;
+ break;
+ case 16:
+ /*
+ * Must have at least:
+ * VisualID0
+ * VisualID3
+ * type
+ * count
+ * length
+ * intensity1
+ * intensity2
+ */
+ if (nitems < 7) {
+ Xfree ((char *)property_return);
+ goto FreeSCCData;
+ }
+ count = 1;
+ break;
+ case 32:
+ /*
+ * Must have at least:
+ * VisualID0
+ * type
+ * count
+ * length
+ * intensity1
+ * intensity2
+ */
+ if (nitems < 6) {
+ Xfree ((char *)property_return);
+ goto FreeSCCData;
+ }
+ count = 0;
+ break;
+ default:
+ Xfree ((char *)property_return);
+ goto FreeSCCData;
+ }
+
+ /*
+ * Get VisualID
+ */
+ visualID = _XcmsGetElement(format_return, &pChar, &nitems);
+ while (count--) {
+ visualID = visualID << format_return;
+ visualID |= _XcmsGetElement(format_return, &pChar, &nitems);
+ }
+
+ if (visualID == 0) {
+ /*
+ * This is a shared intensity table
+ */
+ pScreenData = pScreenDefaultData;
+ } else {
+ /*
+ * This is a per-Visual intensity table
+ */
+ if (!(pScreenData = (LINEAR_RGB_SCCData *)
+ Xcalloc (1, sizeof(LINEAR_RGB_SCCData)))) {
+ return(XcmsFailure);
+ }
+ /* copy matrices */
+ memcpy((char *)pScreenData, (char *)pScreenDefaultData,
+ 18 * sizeof(XcmsFloat));
+
+ /* Create, initialize, and add map */
+ if (!(pNewMap = (XcmsIntensityMap *)
+ Xcalloc (1, sizeof(XcmsIntensityMap)))) {
+ Xfree((char *)pScreenData);
+ return(XcmsFailure);
+ }
+ pNewMap->visualID = visualID;
+ pNewMap->screenData = (XPointer)pScreenData;
+ pNewMap->pFreeScreenData = LINEAR_RGB_FreeSCCData;
+ pNewMap->pNext =
+ (XcmsIntensityMap *)dpy->cms.perVisualIntensityMaps;
+ dpy->cms.perVisualIntensityMaps = (XPointer)pNewMap;
+ dpy->free_funcs->intensityMaps = _XcmsFreeIntensityMaps;
+ }
+
+ cType = _XcmsGetElement(format_return, &pChar, &nitems);
+ nTables = _XcmsGetElement(format_return, &pChar, &nitems);
+
+ if (cType == 0) {
+
+ /* Red Intensity Table */
+ if (!(pScreenData->pRedTbl = (IntensityTbl *)
+ Xcalloc (1, sizeof(IntensityTbl)))) {
+ goto FreeSCCData;
+ }
+ if (_XcmsGetTableType0(pScreenData->pRedTbl, format_return, &pChar,
+ &nitems) == XcmsFailure) {
+ goto FreeRedTbl;
+ }
+
+ if (nTables == 1) {
+ /* Green Intensity Table */
+ pScreenData->pGreenTbl = pScreenData->pRedTbl;
+ /* Blue Intensity Table */
+ pScreenData->pBlueTbl = pScreenData->pRedTbl;
+ } else {
+ /* Green Intensity Table */
+ if (!(pScreenData->pGreenTbl = (IntensityTbl *)
+ Xcalloc (1, sizeof(IntensityTbl)))) {
+ goto FreeRedTblElements;
+ }
+ if (_XcmsGetTableType0(pScreenData->pGreenTbl, format_return, &pChar,
+ &nitems) == XcmsFailure) {
+ goto FreeGreenTbl;
+ }
+
+ /* Blue Intensity Table */
+ if (!(pScreenData->pBlueTbl = (IntensityTbl *)
+ Xcalloc (1, sizeof(IntensityTbl)))) {
+ goto FreeGreenTblElements;
+ }
+ if (_XcmsGetTableType0(pScreenData->pBlueTbl, format_return, &pChar,
+ &nitems) == XcmsFailure) {
+ goto FreeBlueTbl;
+ }
+ }
+ } else if (cType == 1) {
+ /* Red Intensity Table */
+ if (!(pScreenData->pRedTbl = (IntensityTbl *)
+ Xcalloc (1, sizeof(IntensityTbl)))) {
+ goto FreeSCCData;
+ }
+ if (_XcmsGetTableType1(pScreenData->pRedTbl, format_return, &pChar,
+ &nitems) == XcmsFailure) {
+ goto FreeRedTbl;
+ }
+
+ if (nTables == 1) {
+
+ /* Green Intensity Table */
+ pScreenData->pGreenTbl = pScreenData->pRedTbl;
+ /* Blue Intensity Table */
+ pScreenData->pBlueTbl = pScreenData->pRedTbl;
+
+ } else {
+
+ /* Green Intensity Table */
+ if (!(pScreenData->pGreenTbl = (IntensityTbl *)
+ Xcalloc (1, sizeof(IntensityTbl)))) {
+ goto FreeRedTblElements;
+ }
+ if (_XcmsGetTableType1(pScreenData->pGreenTbl, format_return, &pChar,
+ &nitems) == XcmsFailure) {
+ goto FreeGreenTbl;
+ }
+
+ /* Blue Intensity Table */
+ if (!(pScreenData->pBlueTbl = (IntensityTbl *)
+ Xcalloc (1, sizeof(IntensityTbl)))) {
+ goto FreeGreenTblElements;
+ }
+ if (_XcmsGetTableType1(pScreenData->pBlueTbl, format_return, &pChar,
+ &nitems) == XcmsFailure) {
+ goto FreeBlueTbl;
+ }
+ }
+ } else {
+ Xfree ((char *)property_return);
+ goto FreeSCCData;
+ }
+
+#ifdef ALLDEBUG
+ printf ("Intensity Table RED %d\n", pScreenData->pRedTbl->nEntries);
+ pIRec = (IntensityRec *) pScreenData->pRedTbl->pBase;
+ for (count = 0; count < pScreenData->pRedTbl->nEntries; count++, pIRec++) {
+ printf ("\t0x%4x\t%f\n", pIRec->value, pIRec->intensity);
+ }
+ if (pScreenData->pGreenTbl->pBase != pScreenData->pRedTbl->pBase) {
+ printf ("Intensity Table GREEN %d\n", pScreenData->pGreenTbl->nEntries);
+ pIRec = (IntensityRec *)pScreenData->pGreenTbl->pBase;
+ for (count = 0; count < pScreenData->pGreenTbl->nEntries; count++, pIRec++) {
+ printf ("\t0x%4x\t%f\n", pIRec->value, pIRec->intensity);
+ }
+ }
+ if (pScreenData->pBlueTbl->pBase != pScreenData->pRedTbl->pBase) {
+ printf ("Intensity Table BLUE %d\n", pScreenData->pBlueTbl->nEntries);
+ pIRec = (IntensityRec *) pScreenData->pBlueTbl->pBase;
+ for (count = 0; count < pScreenData->pBlueTbl->nEntries; count++, pIRec++) {
+ printf ("\t0x%4x\t%f\n", pIRec->value, pIRec->intensity);
+ }
+ }
+#endif /* ALLDEBUG */
+ }
+
+ Xfree ((char *)property_return);
+
+ /* Free the old memory and use the new structure created. */
+ LINEAR_RGB_FreeSCCData(pPerScrnInfo->screenData);
+
+ pPerScrnInfo->functionSet = (XPointer) &XcmsLinearRGBFunctionSet;
+
+ pPerScrnInfo->screenData = (XPointer) pScreenData;
+
+ pPerScrnInfo->state = XcmsInitSuccess;
+
+ return(XcmsSuccess);
+
+FreeBlueTblElements:
+ Xfree((char *)pScreenData->pBlueTbl->pBase);
+
+FreeBlueTbl:
+ Xfree((char *)pScreenData->pBlueTbl);
+
+FreeGreenTblElements:
+ Xfree((char *)pScreenData->pBlueTbl->pBase);
+
+FreeGreenTbl:
+ Xfree((char *)pScreenData->pGreenTbl);
+
+FreeRedTblElements:
+ Xfree((char *)pScreenData->pRedTbl->pBase);
+
+FreeRedTbl:
+ Xfree((char *)pScreenData->pRedTbl);
+
+FreeSCCData:
+ Xfree((char *)pScreenData);
+ pPerScrnInfo->state = XcmsInitNone;
+ return(XcmsFailure);
+}
+
+
+/*
+ * NAME
+ * LINEAR_RGB_FreeSCCData()
+ *
+ * SYNOPSIS
+ */
+static void
+LINEAR_RGB_FreeSCCData(
+ XPointer pScreenDataTemp)
+/*
+ * DESCRIPTION
+ *
+ * RETURNS
+ * 0 if failed.
+ * 1 if succeeded with no modifications.
+ *
+ */
+{
+ LINEAR_RGB_SCCData *pScreenData = (LINEAR_RGB_SCCData *) pScreenDataTemp;
+
+ if (pScreenData && pScreenData != &Default_RGB_SCCData) {
+ if (pScreenData->pRedTbl) {
+ if (pScreenData->pGreenTbl) {
+ if (pScreenData->pRedTbl->pBase !=
+ pScreenData->pGreenTbl->pBase) {
+ if (pScreenData->pGreenTbl->pBase) {
+ Xfree ((char *)pScreenData->pGreenTbl->pBase);
+ }
+ }
+ if (pScreenData->pGreenTbl != pScreenData->pRedTbl) {
+ Xfree ((char *)pScreenData->pGreenTbl);
+ }
+ }
+ if (pScreenData->pBlueTbl) {
+ if (pScreenData->pRedTbl->pBase !=
+ pScreenData->pBlueTbl->pBase) {
+ if (pScreenData->pBlueTbl->pBase) {
+ Xfree ((char *)pScreenData->pBlueTbl->pBase);
+ }
+ }
+ if (pScreenData->pBlueTbl != pScreenData->pRedTbl) {
+ Xfree ((char *)pScreenData->pBlueTbl);
+ }
+ }
+ if (pScreenData->pRedTbl->pBase) {
+ Xfree ((char *)pScreenData->pRedTbl->pBase);
+ }
+ Xfree ((char *)pScreenData->pRedTbl);
+ }
+ Xfree ((char *)pScreenData);
+ }
+}
+
+
+
+/************************************************************************
+ * *
+ * API PRIVATE ROUTINES *
+ * *
+ ************************************************************************/
+
+/*
+ * NAME
+ * _XcmsGetTableType0
+ *
+ * SYNOPSIS
+ */
+static Status
+_XcmsGetTableType0(
+ IntensityTbl *pTbl,
+ int format,
+ char **pChar,
+ unsigned long *pCount)
+/*
+ * DESCRIPTION
+ *
+ * RETURNS
+ * XcmsFailure if failed.
+ * XcmsSuccess if succeeded.
+ *
+ */
+{
+ unsigned int nElements;
+ IntensityRec *pIRec;
+
+ nElements = pTbl->nEntries =
+ _XcmsGetElement(format, pChar, pCount) + 1;
+ if (!(pIRec = pTbl->pBase = (IntensityRec *)
+ Xcalloc (nElements, sizeof(IntensityRec)))) {
+ return(XcmsFailure);
+ }
+
+ switch (format) {
+ case 8:
+ for (; nElements--; pIRec++) {
+ /* 0xFFFF/0xFF = 0x101 */
+ pIRec->value = _XcmsGetElement (format, pChar, pCount) * 0x101;
+ pIRec->intensity =
+ _XcmsGetElement (format, pChar, pCount) / (XcmsFloat)255.0;
+ }
+ break;
+ case 16:
+ for (; nElements--; pIRec++) {
+ pIRec->value = _XcmsGetElement (format, pChar, pCount);
+ pIRec->intensity = _XcmsGetElement (format, pChar, pCount)
+ / (XcmsFloat)65535.0;
+ }
+ break;
+ case 32:
+ for (; nElements--; pIRec++) {
+ pIRec->value = _XcmsGetElement (format, pChar, pCount);
+ pIRec->intensity = _XcmsGetElement (format, pChar, pCount)
+ / (XcmsFloat)4294967295.0;
+ }
+ break;
+ default:
+ return(XcmsFailure);
+ }
+ return(XcmsSuccess);
+}
+
+
+/*
+ * NAME
+ * _XcmsGetTableType1
+ *
+ * SYNOPSIS
+ */
+static Status
+_XcmsGetTableType1(
+ IntensityTbl *pTbl,
+ int format,
+ char **pChar,
+ unsigned long *pCount)
+/*
+ * DESCRIPTION
+ *
+ * RETURNS
+ * XcmsFailure if failed.
+ * XcmsSuccess if succeeded.
+ *
+ */
+{
+ int count;
+ unsigned int max_index;
+ IntensityRec *pIRec;
+
+ max_index = _XcmsGetElement(format, pChar, pCount);
+ pTbl->nEntries = max_index + 1;
+ if (!(pIRec = pTbl->pBase = (IntensityRec *)
+ Xcalloc (max_index+1, sizeof(IntensityRec)))) {
+ return(XcmsFailure);
+ }
+
+ switch (format) {
+ case 8:
+ for (count = 0; count < max_index+1; count++, pIRec++) {
+ pIRec->value = (count * 65535) / max_index;
+ pIRec->intensity = _XcmsGetElement (format, pChar, pCount)
+ / (XcmsFloat)255.0;
+ }
+ break;
+ case 16:
+ for (count = 0; count < max_index+1; count++, pIRec++) {
+ pIRec->value = (count * 65535) / max_index;
+ pIRec->intensity = _XcmsGetElement (format, pChar, pCount)
+ / (XcmsFloat)65535.0;
+ }
+ break;
+ case 32:
+ for (count = 0; count < max_index+1; count++, pIRec++) {
+ pIRec->value = (count * 65535) / max_index;
+ pIRec->intensity = _XcmsGetElement (format, pChar, pCount)
+ / (XcmsFloat)4294967295.0;
+ }
+ break;
+ default:
+ return(XcmsFailure);
+ }
+
+ return(XcmsSuccess);
+}
+
+
+/*
+ * NAME
+ * ValueCmp
+ *
+ * SYNOPSIS
+ */
+static int
+_XcmsValueCmp(
+ IntensityRec *p1, IntensityRec *p2)
+/*
+ * DESCRIPTION
+ * Compares the value component of two IntensityRec
+ * structures.
+ *
+ * RETURNS
+ * 0 if p1->value is equal to p2->value
+ * < 0 if p1->value is less than p2->value
+ * > 0 if p1->value is greater than p2->value
+ *
+ */
+{
+ return (p1->value - p2->value);
+}
+
+
+/*
+ * NAME
+ * IntensityCmp
+ *
+ * SYNOPSIS
+ */
+static int
+_XcmsIntensityCmp(
+ IntensityRec *p1, IntensityRec *p2)
+/*
+ * DESCRIPTION
+ * Compares the intensity component of two IntensityRec
+ * structures.
+ *
+ * RETURNS
+ * 0 if equal;
+ * < 0 if first precedes second
+ * > 0 if first succeeds second
+ *
+ */
+{
+ if (p1->intensity < p2->intensity) {
+ return (-1);
+ }
+ if (p1->intensity > p2->intensity) {
+ return (XcmsSuccess);
+ }
+ return (XcmsFailure);
+}
+
+/*
+ * NAME
+ * ValueInterpolation
+ *
+ * SYNOPSIS
+ */
+/* ARGSUSED */
+static int
+_XcmsValueInterpolation(
+ IntensityRec *key, IntensityRec *lo, IntensityRec *hi, IntensityRec *answer,
+ int bitsPerRGB)
+/*
+ * DESCRIPTION
+ * Based on a given value, performs a linear interpolation
+ * on the intensities between two IntensityRec structures.
+ * Note that the bitsPerRGB parameter is ignored.
+ *
+ * RETURNS
+ * Returns 0 if failed; otherwise non-zero.
+ */
+{
+ XcmsFloat ratio;
+
+ ratio = ((XcmsFloat)key->value - (XcmsFloat)lo->value) /
+ ((XcmsFloat)hi->value - (XcmsFloat)lo->value);
+ answer->value = key->value;
+ answer->intensity = (hi->intensity - lo->intensity) * ratio;
+ answer->intensity += lo->intensity;
+ return (XcmsSuccess);
+}
+
+/*
+ * NAME
+ * IntensityInterpolation
+ *
+ * SYNOPSIS
+ */
+static int
+_XcmsIntensityInterpolation(
+ IntensityRec *key, IntensityRec *lo, IntensityRec *hi, IntensityRec *answer,
+ int bitsPerRGB)
+/*
+ * DESCRIPTION
+ * Based on a given intensity, performs a linear interpolation
+ * on the values between two IntensityRec structures.
+ * The bitsPerRGB parameter is necessary to perform rounding
+ * to the correct number of significant bits.
+ *
+ * RETURNS
+ * Returns 0 if failed; otherwise non-zero.
+ */
+{
+ XcmsFloat ratio;
+ long target, up, down;
+ int shift = 16 - bitsPerRGB;
+ int max_color = (1 << bitsPerRGB) - 1;
+
+ ratio = (key->intensity - lo->intensity) / (hi->intensity - lo->intensity);
+ answer->intensity = key->intensity;
+ target = hi->value - lo->value;
+ target *= ratio;
+ target += lo->value;
+
+ /*
+ * Ok now, lets find the closest in respects to bits per RGB
+ */
+ up = ((target >> shift) * 0xFFFF) / max_color;
+ if (up < target) {
+ down = up;
+ up = (MIN((down >> shift) + 1, max_color) * 0xFFFF) / max_color;
+ } else {
+ down = (MAX((up >> shift) - 1, 0) * 0xFFFF) / max_color;
+ }
+ answer->value = ((up - target) < (target - down) ? up : down);
+ answer->value &= MASK[bitsPerRGB];
+ return (XcmsSuccess);
+}
+
+
+
+typedef int (*comparProcp)(
+ char *p1,
+ char *p2);
+typedef int (*interpolProcp)(
+ char *key,
+ char *lo,
+ char *hi,
+ char *answer,
+ int bitsPerRGB);
+
+/*
+ * NAME
+ * _XcmsTableSearch
+ *
+ * SYNOPSIS
+ */
+static int
+_XcmsTableSearch(
+ char *key,
+ int bitsPerRGB,
+ char *base,
+ unsigned nel,
+ unsigned nKeyPtrSize,
+ int (*compar)(
+ char *p1,
+ char *p2),
+ int (*interpol)(
+ char *key,
+ char *lo,
+ char *hi,
+ char *answer,
+ int bitsPerRGB),
+ char *answer)
+
+/*
+ * DESCRIPTION
+ * A binary search through the specificied table.
+ *
+ * RETURNS
+ * Returns 0 if failed; otherwise non-zero.
+ *
+ */
+{
+ char *hi, *lo, *mid, *last;
+ int result;
+
+ last = hi = base + ((nel - 1) * nKeyPtrSize);
+ mid = lo = base;
+
+ /* use only the significants bits, then scale into 16 bits */
+ ((IntensityRec *)key)->value = ((unsigned long)
+ (((IntensityRec *)key)->value >> (16 - bitsPerRGB)) * 0xFFFF)
+ / ((1 << bitsPerRGB) - 1);
+
+ /* Special case so that zero intensity always maps to zero value */
+ if ((*compar) (key,lo) <= 0) {
+ memcpy (answer, lo, nKeyPtrSize);
+ ((IntensityRec *)answer)->value &= MASK[bitsPerRGB];
+ return XcmsSuccess;
+ }
+ while (mid != last) {
+ last = mid;
+ mid = lo + (((unsigned)(hi - lo) / nKeyPtrSize) / 2) * nKeyPtrSize;
+ result = (*compar) (key, mid);
+ if (result == 0) {
+
+ memcpy(answer, mid, nKeyPtrSize);
+ ((IntensityRec *)answer)->value &= MASK[bitsPerRGB];
+ return (XcmsSuccess);
+ } else if (result < 0) {
+ hi = mid;
+ } else {
+ lo = mid;
+ }
+ }
+
+ /*
+ * If we got to here, we didn't find a solution, so we
+ * need to apply interpolation.
+ */
+ return ((*interpol)(key, lo, hi, answer, bitsPerRGB));
+}
+
+
+/*
+ * NAME
+ * _XcmsMatVec - multiply a 3 x 3 by a 3 x 1 vector
+ *
+ * SYNOPSIS
+ */
+static void _XcmsMatVec(
+ XcmsFloat *pMat, XcmsFloat *pIn, XcmsFloat *pOut)
+/*
+ * DESCRIPTION
+ * Multiply the passed vector by the passed matrix to return a
+ * vector. Matrix is 3x3, vectors are of length 3.
+ *
+ * RETURNS
+ * void
+ */
+{
+ int i, j;
+
+ for (i = 0; i < 3; i++) {
+ pOut[i] = 0.0;
+ for (j = 0; j < 3; j++)
+ pOut[i] += *(pMat+(i*3)+j) * pIn[j];
+ }
+}
+
+
+/************************************************************************
+ * *
+ * PUBLIC ROUTINES *
+ * *
+ ************************************************************************/
+
+
+/*
+ * NAME
+ * XcmsLRGB_RGB_ParseString
+ *
+ * SYNOPSIS
+ */
+static int
+XcmsLRGB_RGB_ParseString(
+ register char *spec,
+ XcmsColor *pColor)
+/*
+ * DESCRIPTION
+ * This routines takes a string and attempts to convert
+ * it into a XcmsColor structure with XcmsRGBFormat.
+ *
+ * RETURNS
+ * 0 if failed, non-zero otherwise.
+ */
+{
+ register int n, i;
+ unsigned short r, g, b;
+ char c;
+ char *pchar;
+ unsigned short *pShort;
+
+ /*
+ * Check for old # format
+ */
+ if (*spec == '#') {
+ /*
+ * Attempt to parse the value portion.
+ */
+ spec++;
+ n = strlen(spec);
+ if (n != 3 && n != 6 && n != 9 && n != 12) {
+ return(XcmsFailure);
+ }
+
+ n /= 3;
+ g = b = 0;
+ do {
+ r = g;
+ g = b;
+ b = 0;
+ for (i = n; --i >= 0; ) {
+ c = *spec++;
+ b <<= 4;
+ if (c >= '0' && c <= '9')
+ b |= c - '0';
+ /* assume string in lowercase
+ else if (c >= 'A' && c <= 'F')
+ b |= c - ('A' - 10);
+ */
+ else if (c >= 'a' && c <= 'f')
+ b |= c - ('a' - 10);
+ else return (XcmsFailure);
+ }
+ } while (*spec != '\0');
+
+ /*
+ * Succeeded !
+ */
+ n <<= 2;
+ n = 16 - n;
+ /* shift instead of scale, to match old broken semantics */
+ pColor->spec.RGB.red = r << n;
+ pColor->spec.RGB.green = g << n;
+ pColor->spec.RGB.blue = b << n;
+ } else {
+ if ((pchar = strchr(spec, ':')) == NULL) {
+ return(XcmsFailure);
+ }
+ n = (int)(pchar - spec);
+
+ /*
+ * Check for proper prefix.
+ */
+ if (strncmp(spec, _XcmsRGB_prefix, n) != 0) {
+ return(XcmsFailure);
+ }
+
+ /*
+ * Attempt to parse the value portion.
+ */
+ spec += (n + 1);
+ pShort = &pColor->spec.RGB.red;
+ for (i = 0; i < 3; i++, pShort++, spec++) {
+ n = 0;
+ *pShort = 0;
+ while (*spec != '/' && *spec != '\0') {
+ if (++n > 4) {
+ return(XcmsFailure);
+ }
+ c = *spec++;
+ *pShort <<= 4;
+ if (c >= '0' && c <= '9')
+ *pShort |= c - '0';
+ /* assume string in lowercase
+ else if (c >= 'A' && c <= 'F')
+ *pShort |= c - ('A' - 10);
+ */
+ else if (c >= 'a' && c <= 'f')
+ *pShort |= c - ('a' - 10);
+ else return (XcmsFailure);
+ }
+ if (n == 0)
+ return (XcmsFailure);
+ if (n < 4) {
+ *pShort = ((unsigned long)*pShort * 0xFFFF) / ((1 << n*4) - 1);
+ }
+ }
+ }
+ pColor->format = XcmsRGBFormat;
+ pColor->pixel = 0;
+ return (XcmsSuccess);
+}
+
+
+/*
+ * NAME
+ * XcmsLRGB_RGBi_ParseString
+ *
+ * SYNOPSIS
+ */
+static int
+XcmsLRGB_RGBi_ParseString(
+ register char *spec,
+ XcmsColor *pColor)
+/*
+ * DESCRIPTION
+ * This routines takes a string and attempts to convert
+ * it into a XcmsColor structure with XcmsRGBiFormat.
+ * The assumed RGBi string syntax is:
+ * RGBi:<r>/<g>/<b>
+ * Where r, g, and b are in string input format for floats
+ * consisting of:
+ * a. an optional sign
+ * b. a string of numbers possibly containing a decimal point,
+ * c. an optional exponent field containing an 'E' or 'e'
+ * followed by a possibly signed integer string.
+ *
+ * RETURNS
+ * 0 if failed, non-zero otherwise.
+ */
+{
+ int n;
+ char *pchar;
+
+ if ((pchar = strchr(spec, ':')) == NULL) {
+ return(XcmsFailure);
+ }
+ n = (int)(pchar - spec);
+
+ /*
+ * Check for proper prefix.
+ */
+ if (strncmp(spec, _XcmsRGBi_prefix, n) != 0) {
+ return(XcmsFailure);
+ }
+
+ /*
+ * Attempt to parse the value portion.
+ */
+ if (sscanf(spec + n + 1, "%lf/%lf/%lf",
+ &pColor->spec.RGBi.red,
+ &pColor->spec.RGBi.green,
+ &pColor->spec.RGBi.blue) != 3) {
+ char *s; /* Maybe failed due to locale */
+ int f;
+ if ((s = strdup(spec))) {
+ for (f = 0; s[f]; ++f)
+ if (s[f] == '.')
+ s[f] = ',';
+ else if (s[f] == ',')
+ s[f] = '.';
+ if (sscanf(s + n + 1, "%lf/%lf/%lf",
+ &pColor->spec.RGBi.red,
+ &pColor->spec.RGBi.green,
+ &pColor->spec.RGBi.blue) != 3) {
+ free(s);
+ return(XcmsFailure);
+ }
+ free(s);
+ } else
+ return(XcmsFailure);
+ }
+
+ /*
+ * Succeeded !
+ */
+ pColor->format = XcmsRGBiFormat;
+ pColor->pixel = 0;
+ return (XcmsSuccess);
+}
+
+
+/*
+ * NAME
+ * XcmsCIEXYZToRGBi - convert CIE XYZ to RGB
+ *
+ * SYNOPSIS
+ */
+/* ARGSUSED */
+Status
+XcmsCIEXYZToRGBi(
+ XcmsCCC ccc,
+ XcmsColor *pXcmsColors_in_out,/* pointer to XcmsColors to convert */
+ unsigned int nColors, /* Number of colors */
+ Bool *pCompressed) /* pointer to an array of Bool */
+/*
+ * DESCRIPTION
+ * Converts color specifications in an array of XcmsColor
+ * structures from RGB format to RGBi format.
+ *
+ * RETURNS
+ * XcmsFailure if failed,
+ * XcmsSuccess if succeeded without gamut compression.
+ * XcmsSuccessWithCompression if succeeded with gamut
+ * compression.
+ */
+{
+ LINEAR_RGB_SCCData *pScreenData;
+ XcmsFloat tmp[3];
+ int hasCompressed = 0;
+ unsigned int i;
+ XcmsColor *pColor = pXcmsColors_in_out;
+
+ if (ccc == NULL) {
+ return(XcmsFailure);
+ }
+
+ pScreenData = (LINEAR_RGB_SCCData *)ccc->pPerScrnInfo->screenData;
+
+ /*
+ * XcmsColors should be White Point Adjusted, if necessary, by now!
+ */
+
+ /*
+ * NEW!!! for extended gamut compression
+ *
+ * 1. Need to zero out pCompressed
+ *
+ * 2. Need to save initial address of pColor
+ *
+ * 3. Need to save initial address of pCompressed
+ */
+
+ for (i = 0; i < nColors; i++) {
+
+ /* Make sure format is XcmsCIEXYZFormat */
+ if (pColor->format != XcmsCIEXYZFormat) {
+ return(XcmsFailure);
+ }
+
+ /* Multiply [A]-1 * [XYZ] to get RGB intensity */
+ _XcmsMatVec((XcmsFloat *) pScreenData->XYZtoRGBmatrix,
+ (XcmsFloat *) &pColor->spec, tmp);
+
+ if ((MIN3 (tmp[0], tmp[1], tmp[2]) < -EPS) ||
+ (MAX3 (tmp[0], tmp[1], tmp[2]) > (1.0 + EPS))) {
+
+ /*
+ * RGBi out of screen's gamut
+ */
+
+ if (ccc->gamutCompProc == NULL) {
+ /*
+ * Aha!! Here's that little trick that will allow
+ * gamut compression routines to get the out of bound
+ * RGBi.
+ */
+ memcpy((char *)&pColor->spec, (char *)tmp, sizeof(tmp));
+ pColor->format = XcmsRGBiFormat;
+ return(XcmsFailure);
+ } else if ((*ccc->gamutCompProc)(ccc, pXcmsColors_in_out, nColors,
+ i, pCompressed) == 0) {
+ return(XcmsFailure);
+ }
+
+ /*
+ * The gamut compression function should return colors in CIEXYZ
+ * Also check again to if the new color is within gamut.
+ */
+ if (pColor->format != XcmsCIEXYZFormat) {
+ return(XcmsFailure);
+ }
+ _XcmsMatVec((XcmsFloat *) pScreenData->XYZtoRGBmatrix,
+ (XcmsFloat *) &pColor->spec, tmp);
+ if ((MIN3 (tmp[0], tmp[1], tmp[2]) < -EPS) ||
+ (MAX3 (tmp[0], tmp[1], tmp[2]) > (1.0 + EPS))) {
+ return(XcmsFailure);
+ }
+ hasCompressed++;
+ }
+ memcpy((char *)&pColor->spec, (char *)tmp, sizeof(tmp));
+ /* These if statements are done to ensure the fudge factor is */
+ /* is taken into account. */
+ if (pColor->spec.RGBi.red < 0.0) {
+ pColor->spec.RGBi.red = 0.0;
+ } else if (pColor->spec.RGBi.red > 1.0) {
+ pColor->spec.RGBi.red = 1.0;
+ }
+ if (pColor->spec.RGBi.green < 0.0) {
+ pColor->spec.RGBi.green = 0.0;
+ } else if (pColor->spec.RGBi.green > 1.0) {
+ pColor->spec.RGBi.green = 1.0;
+ }
+ if (pColor->spec.RGBi.blue < 0.0) {
+ pColor->spec.RGBi.blue = 0.0;
+ } else if (pColor->spec.RGBi.blue > 1.0) {
+ pColor->spec.RGBi.blue = 1.0;
+ }
+ (pColor++)->format = XcmsRGBiFormat;
+ }
+ return (hasCompressed ? XcmsSuccessWithCompression : XcmsSuccess);
+}
+
+
+/*
+ * NAME
+ * LINEAR_RGBi_to_CIEXYZ - convert RGBi to CIEXYZ
+ *
+ * SYNOPSIS
+ */
+/* ARGSUSED */
+Status
+XcmsRGBiToCIEXYZ(
+ XcmsCCC ccc,
+ XcmsColor *pXcmsColors_in_out,/* pointer to XcmsColors to convert */
+ unsigned int nColors, /* Number of colors */
+ Bool *pCompressed) /* pointer to a bit array */
+/*
+ * DESCRIPTION
+ * Converts color specifications in an array of XcmsColor
+ * structures from RGBi format to CIEXYZ format.
+ *
+ * RETURNS
+ * XcmsFailure if failed,
+ * XcmsSuccess if succeeded.
+ */
+{
+ LINEAR_RGB_SCCData *pScreenData;
+ XcmsFloat tmp[3];
+
+ /*
+ * pCompressed ignored in this function.
+ */
+
+ if (ccc == NULL) {
+ return(XcmsFailure);
+ }
+
+ pScreenData = (LINEAR_RGB_SCCData *)ccc->pPerScrnInfo->screenData;
+
+ /*
+ * XcmsColors should be White Point Adjusted, if necessary, by now!
+ */
+
+ while (nColors--) {
+
+ /* Multiply [A]-1 * [XYZ] to get RGB intensity */
+ _XcmsMatVec((XcmsFloat *) pScreenData->RGBtoXYZmatrix,
+ (XcmsFloat *) &pXcmsColors_in_out->spec, tmp);
+
+ memcpy((char *)&pXcmsColors_in_out->spec, (char *)tmp, sizeof(tmp));
+ (pXcmsColors_in_out++)->format = XcmsCIEXYZFormat;
+ }
+ return(XcmsSuccess);
+}
+
+
+/*
+ * NAME
+ * XcmsRGBiToRGB
+ *
+ * SYNOPSIS
+ */
+/* ARGSUSED */
+Status
+XcmsRGBiToRGB(
+ XcmsCCC ccc,
+ XcmsColor *pXcmsColors_in_out,/* pointer to XcmsColors to convert */
+ unsigned int nColors, /* Number of colors */
+ Bool *pCompressed) /* pointer to a bit array */
+/*
+ * DESCRIPTION
+ * Converts color specifications in an array of XcmsColor
+ * structures from RGBi format to RGB format.
+ *
+ * RETURNS
+ * XcmsFailure if failed,
+ * XcmsSuccess if succeeded without gamut compression.
+ * XcmsSuccessWithCompression if succeeded with gamut
+ * compression.
+ */
+{
+ LINEAR_RGB_SCCData *pScreenData;
+ XcmsRGB tmpRGB;
+ IntensityRec keyIRec, answerIRec;
+
+ /*
+ * pCompressed ignored in this function.
+ */
+
+ if (ccc == NULL) {
+ return(XcmsFailure);
+ }
+
+ pScreenData = (LINEAR_RGB_SCCData *)ccc->pPerScrnInfo->screenData;
+
+ while (nColors--) {
+
+ /* Make sure format is XcmsRGBiFormat */
+ if (pXcmsColors_in_out->format != XcmsRGBiFormat) {
+ return(XcmsFailure);
+ }
+
+ keyIRec.intensity = pXcmsColors_in_out->spec.RGBi.red;
+ if (!_XcmsTableSearch((char *)&keyIRec, ccc->visual->bits_per_rgb,
+ (char *)pScreenData->pRedTbl->pBase,
+ (unsigned)pScreenData->pRedTbl->nEntries,
+ (unsigned)sizeof(IntensityRec),
+ (comparProcp)_XcmsIntensityCmp, (interpolProcp)_XcmsIntensityInterpolation, (char *)&answerIRec)) {
+ return(XcmsFailure);
+ }
+ tmpRGB.red = answerIRec.value;
+
+ keyIRec.intensity = pXcmsColors_in_out->spec.RGBi.green;
+ if (!_XcmsTableSearch((char *)&keyIRec, ccc->visual->bits_per_rgb,
+ (char *)pScreenData->pGreenTbl->pBase,
+ (unsigned)pScreenData->pGreenTbl->nEntries,
+ (unsigned)sizeof(IntensityRec),
+ (comparProcp)_XcmsIntensityCmp, (interpolProcp)_XcmsIntensityInterpolation, (char *)&answerIRec)) {
+ return(XcmsFailure);
+ }
+ tmpRGB.green = answerIRec.value;
+
+ keyIRec.intensity = pXcmsColors_in_out->spec.RGBi.blue;
+ if (!_XcmsTableSearch((char *)&keyIRec, ccc->visual->bits_per_rgb,
+ (char *)pScreenData->pBlueTbl->pBase,
+ (unsigned)pScreenData->pBlueTbl->nEntries,
+ (unsigned)sizeof(IntensityRec),
+ (comparProcp)_XcmsIntensityCmp, (interpolProcp)_XcmsIntensityInterpolation, (char *)&answerIRec)) {
+ return(XcmsFailure);
+ }
+ tmpRGB.blue = answerIRec.value;
+
+ memcpy((char *)&pXcmsColors_in_out->spec, (char *)&tmpRGB, sizeof(XcmsRGB));
+ (pXcmsColors_in_out++)->format = XcmsRGBFormat;
+ }
+ return(XcmsSuccess);
+}
+
+
+/*
+ * NAME
+ * XcmsRGBToRGBi
+ *
+ * SYNOPSIS
+ */
+/* ARGSUSED */
+Status
+XcmsRGBToRGBi(
+ XcmsCCC ccc,
+ XcmsColor *pXcmsColors_in_out,/* pointer to XcmsColors to convert */
+ unsigned int nColors, /* Number of colors */
+ Bool *pCompressed) /* pointer to a bit array */
+/*
+ * DESCRIPTION
+ * Converts color specifications in an array of XcmsColor
+ * structures from RGB format to RGBi format.
+ *
+ * RETURNS
+ * XcmsFailure if failed,
+ * XcmsSuccess if succeeded.
+ */
+{
+ LINEAR_RGB_SCCData *pScreenData;
+ XcmsRGBi tmpRGBi;
+ IntensityRec keyIRec, answerIRec;
+
+ /*
+ * pCompressed ignored in this function.
+ */
+
+ if (ccc == NULL) {
+ return(XcmsFailure);
+ }
+
+ pScreenData = (LINEAR_RGB_SCCData *)ccc->pPerScrnInfo->screenData;
+
+ while (nColors--) {
+
+ /* Make sure format is XcmsRGBFormat */
+ if (pXcmsColors_in_out->format != XcmsRGBFormat) {
+ return(XcmsFailure);
+ }
+
+ keyIRec.value = pXcmsColors_in_out->spec.RGB.red;
+ if (!_XcmsTableSearch((char *)&keyIRec, ccc->visual->bits_per_rgb,
+ (char *)pScreenData->pRedTbl->pBase,
+ (unsigned)pScreenData->pRedTbl->nEntries,
+ (unsigned)sizeof(IntensityRec),
+ (comparProcp)_XcmsValueCmp, (interpolProcp)_XcmsValueInterpolation, (char *)&answerIRec)) {
+ return(XcmsFailure);
+ }
+ tmpRGBi.red = answerIRec.intensity;
+
+ keyIRec.value = pXcmsColors_in_out->spec.RGB.green;
+ if (!_XcmsTableSearch((char *)&keyIRec, ccc->visual->bits_per_rgb,
+ (char *)pScreenData->pGreenTbl->pBase,
+ (unsigned)pScreenData->pGreenTbl->nEntries,
+ (unsigned)sizeof(IntensityRec),
+ (comparProcp)_XcmsValueCmp, (interpolProcp)_XcmsValueInterpolation, (char *)&answerIRec)) {
+ return(XcmsFailure);
+ }
+ tmpRGBi.green = answerIRec.intensity;
+
+ keyIRec.value = pXcmsColors_in_out->spec.RGB.blue;
+ if (!_XcmsTableSearch((char *)&keyIRec, ccc->visual->bits_per_rgb,
+ (char *)pScreenData->pBlueTbl->pBase,
+ (unsigned)pScreenData->pBlueTbl->nEntries,
+ (unsigned)sizeof(IntensityRec),
+ (comparProcp)_XcmsValueCmp, (interpolProcp)_XcmsValueInterpolation, (char *)&answerIRec)) {
+ return(XcmsFailure);
+ }
+ tmpRGBi.blue = answerIRec.intensity;
+
+ memcpy((char *)&pXcmsColors_in_out->spec, (char *)&tmpRGBi, sizeof(XcmsRGBi));
+ (pXcmsColors_in_out++)->format = XcmsRGBiFormat;
+ }
+ return(XcmsSuccess);
+}
+
+/*
+ * NAME
+ * _XcmsInitScrnDefaultInfo
+ *
+ * SYNOPSIS
+ */
+/* ARGSUSED */
+int
+_XcmsLRGB_InitScrnDefault(
+ Display *dpy,
+ int screenNumber,
+ XcmsPerScrnInfo *pPerScrnInfo)
+/*
+ * DESCRIPTION
+ * Given a display and screen number, this routine attempts
+ * to initialize the Xcms per Screen Info structure
+ * (XcmsPerScrnInfo) with defaults.
+ *
+ * RETURNS
+ * Returns zero if initialization failed; non-zero otherwise.
+ */
+{
+ pPerScrnInfo->screenData = (XPointer)&Default_RGB_SCCData;
+ pPerScrnInfo->screenWhitePt.spec.CIEXYZ.X =
+ Default_RGB_SCCData.RGBtoXYZmatrix[0][0] +
+ Default_RGB_SCCData.RGBtoXYZmatrix[0][1] +
+ Default_RGB_SCCData.RGBtoXYZmatrix[0][2];
+ pPerScrnInfo->screenWhitePt.spec.CIEXYZ.Y =
+ Default_RGB_SCCData.RGBtoXYZmatrix[1][0] +
+ Default_RGB_SCCData.RGBtoXYZmatrix[1][1] +
+ Default_RGB_SCCData.RGBtoXYZmatrix[1][2];
+ pPerScrnInfo->screenWhitePt.spec.CIEXYZ.Z =
+ Default_RGB_SCCData.RGBtoXYZmatrix[2][0] +
+ Default_RGB_SCCData.RGBtoXYZmatrix[2][1] +
+ Default_RGB_SCCData.RGBtoXYZmatrix[2][2];
+ if ((pPerScrnInfo->screenWhitePt.spec.CIEXYZ.Y < (1.0 - EPS) )
+ || (pPerScrnInfo->screenWhitePt.spec.CIEXYZ.Y > (1.0 + EPS))) {
+ pPerScrnInfo->screenData = (XPointer)NULL;
+ pPerScrnInfo->state = XcmsInitNone;
+ return(0);
+ }
+ pPerScrnInfo->screenWhitePt.spec.CIEXYZ.Y = 1.0;
+ pPerScrnInfo->screenWhitePt.format = XcmsCIEXYZFormat;
+ pPerScrnInfo->screenWhitePt.pixel = 0;
+ pPerScrnInfo->functionSet = (XPointer)&XcmsLinearRGBFunctionSet;
+ pPerScrnInfo->state = XcmsInitFailure; /* default initialization */
+ return(1);
+}
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