diff options
author | marha <marha@users.sourceforge.net> | 2012-11-19 10:38:33 +0100 |
---|---|---|
committer | marha <marha@users.sourceforge.net> | 2012-11-19 10:38:33 +0100 |
commit | 24635abae6008bef13e30d798b3f33abab412770 (patch) | |
tree | e799fbde24e0fd935af76b0bc48d30ef69f75d54 /libX11/src/xcms/CvCols.c | |
parent | e0844ae8b5ef87049537a7e0ebff81acc2695256 (diff) | |
parent | 6ce1d8f0f8c23e186175a7c84c21d7bfbe168dc5 (diff) | |
download | vcxsrv-24635abae6008bef13e30d798b3f33abab412770.tar.gz vcxsrv-24635abae6008bef13e30d798b3f33abab412770.tar.bz2 vcxsrv-24635abae6008bef13e30d798b3f33abab412770.zip |
Merge remote-tracking branch 'origin/released'
* origin/released:
Changed file permissions
dos -> unix
Conflicts:
libX11/include/X11/Xregion.h
libX11/src/ConvSel.c
libX11/src/CrGlCur.c
libX11/src/CrWindow.c
libX11/src/GetDflt.c
libX11/src/StrKeysym.c
libX11/src/Window.c
libX11/src/xkb/XKBBind.c
libX11/src/xkb/XKBGetMap.c
libX11/src/xkb/XKBSetGeom.c
libX11/src/xkb/XKBUse.c
libX11/src/xlibi18n/XimProto.h
libX11/src/xlibi18n/lcDynamic.c
libXdmcp/Key.c
libXdmcp/Write.c
libxcb/src/xcb_windefs.h
xkbcomp/keycodes.c
xkbcomp/xkbpath.c
xorg-server/hw/xwin/glx/winpriv.h
xorg-server/xkeyboard-config/rules/bin/ml1_s.sh
xorg-server/xkeyboard-config/rules/bin/ml1v1_s.sh
xorg-server/xkeyboard-config/rules/bin/ml1v_s.sh
xorg-server/xkeyboard-config/rules/bin/ml_s.sh
xorg-server/xkeyboard-config/rules/bin/mln_s.sh
xorg-server/xkeyboard-config/rules/bin/mlnvn_s.sh
xorg-server/xkeyboard-config/rules/bin/mlv_s.sh
xorg-server/xkeyboard-config/rules/compat/.gitignore
Diffstat (limited to 'libX11/src/xcms/CvCols.c')
-rw-r--r-- | libX11/src/xcms/CvCols.c | 2060 |
1 files changed, 1030 insertions, 1030 deletions
diff --git a/libX11/src/xcms/CvCols.c b/libX11/src/xcms/CvCols.c index f86595595..ed3582663 100644 --- a/libX11/src/xcms/CvCols.c +++ b/libX11/src/xcms/CvCols.c @@ -1,1030 +1,1030 @@ -
-/*
- * 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
- * XcmsCvCols.c
- *
- * DESCRIPTION
- * Xcms API routine that converts between the
- * device-independent color spaces.
- *
- *
- */
-
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#include "Xlibint.h"
-#include "Xcmsint.h"
-#include "Cv.h"
-
-/*
- * LOCAL DEFINES
- */
-#define DD_FORMAT 0x01
-#define DI_FORMAT 0x02
-#define MIX_FORMAT 0x04
-#ifndef MAX
-# define MAX(x,y) ((x) > (y) ? (x) : (y))
-#endif
-
-
-/************************************************************************
- * *
- * PRIVATE ROUTINES *
- * *
- ************************************************************************/
-
-/*
- * NAME
- * EqualCIEXYZ
- *
- * SYNOPSIS
- */
-static int
-EqualCIEXYZ(
- XcmsColor *p1, XcmsColor *p2)
-/*
- * DESCRIPTION
- * Compares two XcmsColor structures that are in XcmsCIEXYZFormat
- *
- * RETURNS
- * Returns 1 if equal; 0 otherwise.
- *
- */
-{
- if (p1->format != XcmsCIEXYZFormat || p2->format != XcmsCIEXYZFormat) {
- return(0);
- }
- if ((p1->spec.CIEXYZ.X != p2->spec.CIEXYZ.X)
- || (p1->spec.CIEXYZ.Y != p2->spec.CIEXYZ.Y)
- || (p1->spec.CIEXYZ.Z != p2->spec.CIEXYZ.Z)) {
- return(0);
- }
- return(1);
-}
-
-
-/*
- * NAME
- * XcmsColorSpace
- *
- * SYNOPSIS
- */
-static XcmsColorSpace *
-ColorSpaceOfID(
- XcmsCCC ccc,
- XcmsColorFormat id)
-/*
- * DESCRIPTION
- * Returns a pointer to the color space structure
- * (XcmsColorSpace) associated with the specified color space
- * ID.
- *
- * RETURNS
- * Pointer to matching XcmsColorSpace structure if found;
- * otherwise NULL.
- */
-{
- XcmsColorSpace **papColorSpaces;
-
- if (ccc == NULL) {
- return(NULL);
- }
-
- /*
- * First try Device-Independent color spaces
- */
- papColorSpaces = _XcmsDIColorSpaces;
- if (papColorSpaces != NULL) {
- while (*papColorSpaces != NULL) {
- if ((*papColorSpaces)->id == id) {
- return(*papColorSpaces);
- }
- papColorSpaces++;
- }
- }
-
- /*
- * Next try Device-Dependent color spaces
- */
- papColorSpaces = ((XcmsFunctionSet *)ccc->pPerScrnInfo->functionSet)->DDColorSpaces;
- if (papColorSpaces != NULL) {
- while (*papColorSpaces != NULL) {
- if ((*papColorSpaces)->id == id) {
- return(*papColorSpaces);
- }
- papColorSpaces++;
- }
- }
-
- return(NULL);
-}
-
-
-/*
- * NAME
- * ValidDIColorSpaceID
- *
- * SYNOPSIS
- */
-static int
-ValidDIColorSpaceID(
- XcmsColorFormat id)
-/*
- * DESCRIPTION
- * Determines if the specified color space ID is a valid
- * Device-Independent color space in the specified Color
- * Conversion Context.
- *
- * RETURNS
- * Returns zero if not valid; otherwise non-zero.
- */
-{
- XcmsColorSpace **papRec;
- papRec = _XcmsDIColorSpaces;
- if (papRec != NULL) {
- while (*papRec != NULL) {
- if ((*papRec)->id == id) {
- return(1);
- }
- papRec++;
- }
- }
- return(0);
-}
-
-
-/*
- * NAME
- * ValidDDColorSpaceID
- *
- * SYNOPSIS
- */
-static int
-ValidDDColorSpaceID(
- XcmsCCC ccc,
- XcmsColorFormat id)
-/*
- * DESCRIPTION
- * Determines if the specified color space ID is a valid
- * Device-Dependent color space in the specified Color
- * Conversion Context.
- *
- * RETURNS
- * Returns zero if not valid; otherwise non-zero.
- */
-{
- XcmsColorSpace **papRec;
-
- if (ccc->pPerScrnInfo->state != XcmsInitNone) {
- papRec = ((XcmsFunctionSet *)ccc->pPerScrnInfo->functionSet)->DDColorSpaces;
- while (*papRec != NULL) {
- if ((*papRec)->id == id) {
- return(1);
- }
- papRec++;
- }
- }
- return(0);
-}
-
-
-/*
- * NAME
- * ConvertMixedColors - Convert XcmsColor structures
- *
- * SYNOPSIS
- */
-static Status
-ConvertMixedColors(
- XcmsCCC ccc,
- XcmsColor *pColors_in_out,
- XcmsColor *pWhitePt,
- unsigned int nColors,
- XcmsColorFormat targetFormat,
- unsigned char format_flag)
-/*
- * DESCRIPTION
- * This routine will only convert the following types of
- * batches:
- * DI to DI
- * DD to DD
- * DD to CIEXYZ
- * In other words, it will not convert the following types of
- * batches:
- * DI to DD
- * DD to DI(not CIEXYZ)
- *
- * format_flag:
- * 0x01 : convert Device-Dependent only specifications to the
- * target format.
- * 0x02 : convert Device-Independent only specifications to the
- * target format.
- * 0x03 : convert all specifications to the target format.
- *
- * RETURNS
- * XcmsFailure if failed,
- * XcmsSuccess if none of the color specifications were
- * compressed in the conversion process
- * XcmsSuccessWithCompression if at least one of the
- * color specifications were compressed in the
- * conversion process.
- *
- */
-{
- XcmsColor *pColor, *pColors_start;
- XcmsColorFormat format;
- Status retval_tmp;
- Status retval = XcmsSuccess;
- unsigned int iColors;
- unsigned int nBatch;
-
- /*
- * Convert array of mixed color specifications in batches of
- * contiguous formats to the target format
- */
- iColors = 0;
- while (iColors < nColors) {
- /*
- * Find contiguous array of color specifications with the
- * same format
- */
- pColor = pColors_start = pColors_in_out + iColors;
- format = pColors_start->format;
- nBatch = 0;
- while (iColors < nColors && pColor->format == format) {
- pColor++;
- nBatch++;
- iColors++;
- }
- if (format != targetFormat) {
- /*
- * Need to convert this batch from current format to target format.
- */
- if (XCMS_DI_ID(format) && (format_flag & DI_FORMAT) &&
- XCMS_DI_ID(targetFormat)) {
- /*
- * DI->DI
- *
- * Format of interest is Device-Independent,
- * This batch contains Device-Independent specifications, and
- * the Target format is Device-Independent.
- */
- retval_tmp = _XcmsDIConvertColors(ccc, pColors_start, pWhitePt,
- nBatch, targetFormat);
- } else if (XCMS_DD_ID(format) && (format_flag & DD_FORMAT) &&
- (targetFormat == XcmsCIEXYZFormat)) {
- /*
- * DD->CIEXYZ
- *
- * Format of interest is Device-Dependent,
- * This batch contains Device-Dependent specifications, and
- * the Target format is CIEXYZ.
- *
- * Since DD->CIEXYZ we can use NULL instead of pCompressed.
- */
- if ((ccc->whitePtAdjProc != NULL) && !_XcmsEqualWhitePts(ccc,
- pWhitePt, ScreenWhitePointOfCCC(ccc))) {
- /*
- * Need to call WhiteAdjustProc (Screen White Point to
- * White Point).
- */
- retval_tmp = (*ccc->whitePtAdjProc)(ccc,
- ScreenWhitePointOfCCC(ccc), pWhitePt,
- XcmsCIEXYZFormat, pColors_start, nBatch,
- (Bool *)NULL);
- } else {
- retval_tmp = _XcmsDDConvertColors(ccc, pColors_start,
- nBatch, XcmsCIEXYZFormat, (Bool *)NULL);
- }
- } else if (XCMS_DD_ID(format) && (format_flag & DD_FORMAT) &&
- XCMS_DD_ID(targetFormat)) {
- /*
- * DD->DD(not CIEXYZ)
- *
- * Format of interest is Device-Dependent,
- * This batch contains Device-Dependent specifications, and
- * the Target format is Device-Dependent and not CIEXYZ.
- */
- retval_tmp = _XcmsDDConvertColors(ccc, pColors_start, nBatch,
- targetFormat, (Bool *)NULL);
- } else {
- /*
- * This routine is called for the wrong reason.
- */
- return(XcmsFailure);
- }
- if (retval_tmp == XcmsFailure) {
- return(XcmsFailure);
- }
- retval = MAX(retval, retval_tmp);
- }
- }
- return(retval);
-}
-
-
-/************************************************************************
- * *
- * API PRIVATE ROUTINES *
- * *
- ************************************************************************/
-
-/*
- * NAME
- * _XcmsEqualWhitePts
- *
- * SYNOPSIS
- */
-int
-_XcmsEqualWhitePts(XcmsCCC ccc, XcmsColor *pWhitePt1, XcmsColor *pWhitePt2)
-/*
- * DESCRIPTION
- *
- * RETURNS
- * Returns 0 if not equal; otherwise 1.
- *
- */
-{
- XcmsColor tmp1, tmp2;
-
- memcpy((char *)&tmp1, (char *)pWhitePt1, sizeof(XcmsColor));
- memcpy((char *)&tmp2, (char *)pWhitePt2, sizeof(XcmsColor));
-
- if (tmp1.format != XcmsCIEXYZFormat) {
- if (_XcmsDIConvertColors(ccc, &tmp1, (XcmsColor *) NULL, 1,
- XcmsCIEXYZFormat)==0) {
- return(0);
- }
- }
-
- if (tmp2.format != XcmsCIEXYZFormat) {
- if (_XcmsDIConvertColors(ccc, &tmp2, (XcmsColor *) NULL, 1,
- XcmsCIEXYZFormat)==0) {
- return(0);
- }
- }
-
- return (EqualCIEXYZ(&tmp1, &tmp2));
-}
-
-
-/*
- * NAME
- * _XcmsDIConvertColors - Convert XcmsColor structures
- *
- * SYNOPSIS
- */
-Status
-_XcmsDIConvertColors(
- XcmsCCC ccc,
- XcmsColor *pColors_in_out,
- XcmsColor *pWhitePt,
- unsigned int nColors,
- XcmsColorFormat newFormat)
-/*
- * DESCRIPTION
- * Convert XcmsColor structures to another Device-Independent
- * form.
- *
- * Here are some assumptions that this routine makes:
- * 1. The calling routine has already checked if
- * pColors_in_out->format == newFormat, therefore
- * there is no need to check again here.
- * 2. The calling routine has already checked nColors,
- * therefore this routine assumes nColors > 0.
- * 3. The calling routine may want to convert only between
- * CIExyY <-> CIEXYZ <-> CIEuvY
- * therefore, this routine allows pWhitePt to equal NULL.
- *
- *
- * RETURNS
- * XcmsFailure if failed,
- * XcmsSuccess if succeeded.
- *
- */
-{
- XcmsColorSpace *pFrom, *pTo;
- XcmsDIConversionProc *src_to_CIEXYZ, *src_from_CIEXYZ;
- XcmsDIConversionProc *dest_to_CIEXYZ, *dest_from_CIEXYZ;
- XcmsDIConversionProc *to_CIEXYZ_stop, *from_CIEXYZ_start;
- XcmsDIConversionProc *tmp;
-
- /*
- * Allow pWhitePt to equal NULL. This appropriate when converting
- * anywhere between:
- * CIExyY <-> CIEXYZ <-> CIEuvY
- */
-
- if (pColors_in_out == NULL ||
- !ValidDIColorSpaceID(pColors_in_out->format) ||
- !ValidDIColorSpaceID(newFormat)) {
- return(XcmsFailure);
- }
-
- /*
- * Get a handle on the function list for the current specification format
- */
- if ((pFrom = ColorSpaceOfID(ccc, pColors_in_out->format))
- == NULL) {
- return(XcmsFailure);
- }
-
- /*
- * Get a handle on the function list for the new specification format
- */
- if ((pTo = ColorSpaceOfID(ccc, newFormat)) == NULL) {
- return(XcmsFailure);
- }
-
- src_to_CIEXYZ = pFrom->to_CIEXYZ;
- src_from_CIEXYZ = pFrom->from_CIEXYZ;
- dest_to_CIEXYZ = pTo->to_CIEXYZ;
- dest_from_CIEXYZ = pTo->from_CIEXYZ;
-
- if (pTo->inverse_flag && pFrom->inverse_flag) {
- /*
- * Find common function pointers
- */
- for (to_CIEXYZ_stop = src_to_CIEXYZ; *to_CIEXYZ_stop; to_CIEXYZ_stop++){
- for (tmp = dest_to_CIEXYZ; *tmp; tmp++) {
- if (*to_CIEXYZ_stop == *tmp) {
- goto Continue;
- }
- }
- }
-
-Continue:
-
- /*
- * Execute the functions to CIEXYZ, stopping short as necessary
- */
- while (src_to_CIEXYZ != to_CIEXYZ_stop) {
- if ((*src_to_CIEXYZ++)(ccc, pWhitePt, pColors_in_out,
- nColors) == XcmsFailure) {
- return(XcmsFailure);
- }
- }
-
- /*
- * Determine where to start on the from_CIEXYZ path.
- */
- from_CIEXYZ_start = dest_from_CIEXYZ;
- tmp = src_from_CIEXYZ;
- while ((*from_CIEXYZ_start == *tmp) && (*from_CIEXYZ_start != NULL)) {
- from_CIEXYZ_start++;
- tmp++;
- }
-
- } else {
- /*
- * The function in at least one of the Color Spaces are not
- * complementary, i.e.,
- * for an i, 0 <= i < n elements
- * from_CIEXYZ[i] is not the inverse of to_CIEXYZ[i]
- *
- * Execute the functions all the way to CIEXYZ
- */
- while (*src_to_CIEXYZ) {
- if ((*src_to_CIEXYZ++)(ccc, pWhitePt, pColors_in_out,
- nColors) == XcmsFailure) {
- return(XcmsFailure);
- }
- }
-
- /*
- * Determine where to start on the from_CIEXYZ path.
- */
- from_CIEXYZ_start = dest_from_CIEXYZ;
- }
-
-
- /*
- * Execute the functions from CIEXYZ.
- */
- while (*from_CIEXYZ_start) {
- if ((*from_CIEXYZ_start++)(ccc, pWhitePt, pColors_in_out,
- nColors) == XcmsFailure) {
- return(XcmsFailure);
- }
- }
-
- return(XcmsSuccess);
-}
-
-
-/*
- * NAME
- * _XcmsDDConvertColors - Convert XcmsColor structures
- *
- * SYNOPSIS
- */
-Status
-_XcmsDDConvertColors(
- XcmsCCC ccc,
- XcmsColor *pColors_in_out,
- unsigned int nColors,
- XcmsColorFormat newFormat,
- Bool *pCompressed)
-/*
- * DESCRIPTION
- * Convert XcmsColor structures:
- *
- * 1. From CIEXYZ to Device-Dependent formats (typically RGB and
- * RGBi),
- * or
- * 2. Between Device-Dependent formats (typically RGB and RGBi).
- *
- * Assumes that these specifications have already been white point
- * adjusted if necessary from Client White Point to Screen
- * White Point. Therefore, the white point now associated
- * with the specifications is the Screen White Point.
- *
- * pCompressed may be NULL. If so this indicates that the
- * calling routine is not interested in knowing exactly which
- * color was compressed, if any.
- *
- *
- * RETURNS
- * XcmsFailure if failed,
- * XcmsSuccess if none of the color specifications were
- * compressed in the conversion process
- * XcmsSuccessWithCompression if at least one of the
- * color specifications were compressed in the
- * conversion process.
- *
- */
-{
- XcmsColorSpace *pFrom, *pTo;
- XcmsDDConversionProc *src_to_CIEXYZ, *src_from_CIEXYZ;
- XcmsDDConversionProc *dest_to_CIEXYZ, *dest_from_CIEXYZ;
- XcmsDDConversionProc *from_CIEXYZ_start, *to_CIEXYZ_stop;
- XcmsDDConversionProc *tmp;
- int retval;
- int hasCompressed = 0;
-
- if (ccc == NULL || pColors_in_out == NULL) {
- return(XcmsFailure);
- }
-
- if (nColors == 0 || pColors_in_out->format == newFormat) {
- /* do nothing */
- return(XcmsSuccess);
- }
-
- if (((XcmsFunctionSet *)ccc->pPerScrnInfo->functionSet) == NULL) {
- return(XcmsFailure); /* hmm, an internal error? */
- }
-
- /*
- * Its ok if pColors_in_out->format == XcmsCIEXYZFormat
- * or
- * if newFormat == XcmsCIEXYZFormat
- */
- if ( !( ValidDDColorSpaceID(ccc, pColors_in_out->format)
- ||
- (pColors_in_out->format == XcmsCIEXYZFormat))
- ||
- !(ValidDDColorSpaceID(ccc, newFormat)
- ||
- newFormat == XcmsCIEXYZFormat)) {
- return(XcmsFailure);
- }
-
- if ((pFrom = ColorSpaceOfID(ccc, pColors_in_out->format)) == NULL){
- return(XcmsFailure);
- }
-
- if ((pTo = ColorSpaceOfID(ccc, newFormat)) == NULL) {
- return(XcmsFailure);
- }
-
- src_to_CIEXYZ = (XcmsDDConversionProc *)pFrom->to_CIEXYZ;
- src_from_CIEXYZ = (XcmsDDConversionProc *)pFrom->from_CIEXYZ;
- dest_to_CIEXYZ = (XcmsDDConversionProc *)pTo->to_CIEXYZ;
- dest_from_CIEXYZ = (XcmsDDConversionProc *)pTo->from_CIEXYZ;
-
- if (pTo->inverse_flag && pFrom->inverse_flag) {
- /*
- * Find common function pointers
- */
- for (to_CIEXYZ_stop = src_to_CIEXYZ; *to_CIEXYZ_stop; to_CIEXYZ_stop++){
- for (tmp = dest_to_CIEXYZ; *tmp; tmp++) {
- if (*to_CIEXYZ_stop == *tmp) {
- goto Continue;
- }
- }
- }
-Continue:
-
- /*
- * Execute the functions
- */
- while (src_to_CIEXYZ != to_CIEXYZ_stop) {
- retval = (*src_to_CIEXYZ++)(ccc, pColors_in_out, nColors,
- pCompressed);
- if (retval == XcmsFailure) {
- return(XcmsFailure);
- }
- hasCompressed |= (retval == XcmsSuccessWithCompression);
- }
-
- /*
- * Determine where to start on the from_CIEXYZ path.
- */
- from_CIEXYZ_start = dest_from_CIEXYZ;
- tmp = src_from_CIEXYZ;
- while ((*from_CIEXYZ_start == *tmp) && (*from_CIEXYZ_start != NULL)) {
- from_CIEXYZ_start++;
- tmp++;
- }
-
- } else {
- /*
- * The function in at least one of the Color Spaces are not
- * complementary, i.e.,
- * for an i, 0 <= i < n elements
- * from_CIEXYZ[i] is not the inverse of to_CIEXYZ[i]
- *
- * Execute the functions all the way to CIEXYZ
- */
- while (*src_to_CIEXYZ) {
- retval = (*src_to_CIEXYZ++)(ccc, pColors_in_out, nColors,
- pCompressed);
- if (retval == XcmsFailure) {
- return(XcmsFailure);
- }
- hasCompressed |= (retval == XcmsSuccessWithCompression);
- }
-
- /*
- * Determine where to start on the from_CIEXYZ path.
- */
- from_CIEXYZ_start = dest_from_CIEXYZ;
- }
-
- while (*from_CIEXYZ_start) {
- retval = (*from_CIEXYZ_start++)(ccc, pColors_in_out, nColors,
- pCompressed);
- if (retval == XcmsFailure) {
- return(XcmsFailure);
- }
- hasCompressed |= (retval == XcmsSuccessWithCompression);
- }
-
- return(hasCompressed ? XcmsSuccessWithCompression : XcmsSuccess);
-}
-
-
-/************************************************************************
- * *
- * PUBLIC ROUTINES *
- * *
- ************************************************************************/
-
-/*
- * NAME
- * XcmsConvertColors - Convert XcmsColor structures
- *
- * SYNOPSIS
- */
-Status
-XcmsConvertColors(
- XcmsCCC ccc,
- XcmsColor *pColors_in_out,
- unsigned int nColors,
- XcmsColorFormat targetFormat,
- Bool *pCompressed)
-/*
- * DESCRIPTION
- * Convert XcmsColor structures to another format
- *
- * RETURNS
- * XcmsFailure if failed,
- * XcmsSuccess if succeeded without gamut compression,
- * XcmsSuccessWithCompression if succeeded with gamut
- * compression.
- *
- */
-{
- XcmsColor clientWhitePt;
- XcmsColor Color1;
- XcmsColor *pColors_tmp;
- int callWhiteAdjustProc = 0;
- XcmsColorFormat format;
- Status retval;
- unsigned char contents_flag = 0x00;
- unsigned int iColors;
-
- if (ccc == NULL || pColors_in_out == NULL ||
- !(ValidDIColorSpaceID(targetFormat) ||
- ValidDDColorSpaceID(ccc, targetFormat))) {
- return(XcmsFailure);
- }
-
- /*
- * Check formats in color specification array
- */
- format = pColors_in_out->format;
- for (pColors_tmp = pColors_in_out, iColors = nColors; iColors; pColors_tmp++, iColors--) {
- if (!(ValidDIColorSpaceID(pColors_tmp->format) ||
- ValidDDColorSpaceID(ccc, pColors_tmp->format))) {
- return(XcmsFailure);
- }
- if (XCMS_DI_ID(pColors_tmp->format)) {
- contents_flag |= DI_FORMAT;
- } else {
- contents_flag |= DD_FORMAT;
- }
- if (pColors_tmp->format != format) {
- contents_flag |= MIX_FORMAT;
- }
- }
-
- /*
- * Check if we need the Client White Point.
- */
- if ((contents_flag & DI_FORMAT) || XCMS_DI_ID(targetFormat)) {
- /* To proceed, we need to get the Client White Point */
- memcpy((char *)&clientWhitePt, (char *)&ccc->clientWhitePt,
- sizeof(XcmsColor));
- if (clientWhitePt.format == XcmsUndefinedFormat) {
- /*
- * Client White Point is undefined, therefore set to the Screen
- * White Point.
- * Since Client White Point == Screen White Point, WhiteAdjustProc
- * is not called.
- */
- memcpy((char *)&clientWhitePt,
- (char *)&ccc->pPerScrnInfo->screenWhitePt,
- sizeof(XcmsColor));
- } else if ((ccc->whitePtAdjProc != NULL) && !_XcmsEqualWhitePts(ccc,
- &clientWhitePt, ScreenWhitePointOfCCC(ccc))) {
- /*
- * Client White Point != Screen White Point, and WhiteAdjustProc
- * is not NULL, therefore, will need to call it when
- * converting between DI and DD specifications.
- */
- callWhiteAdjustProc = 1;
- }
- }
-
- /*
- * Make copy of array of color specifications
- */
- if (nColors > 1) {
- pColors_tmp = (XcmsColor *) Xmalloc(nColors * sizeof(XcmsColor));
- } else {
- pColors_tmp = &Color1;
- }
- memcpy((char *)pColors_tmp, (char *)pColors_in_out,
- nColors * sizeof(XcmsColor));
-
- /*
- * zero out pCompressed
- */
- if (pCompressed) {
- bzero((char *)pCompressed, nColors * sizeof(Bool));
- }
-
- if (contents_flag == DD_FORMAT || contents_flag == DI_FORMAT) {
- /*
- * ENTIRE ARRAY IS IN ONE FORMAT.
- */
- if (XCMS_DI_ID(format) && XCMS_DI_ID(targetFormat)) {
- /*
- * DI-to-DI only conversion
- */
- retval = _XcmsDIConvertColors(ccc, pColors_tmp,
- &clientWhitePt, nColors, targetFormat);
- } else if (XCMS_DD_ID(format) && XCMS_DD_ID(targetFormat)) {
- /*
- * DD-to-DD only conversion
- * Since DD->DD there will be no compressed thus we can
- * pass NULL instead of pCompressed.
- */
- retval = _XcmsDDConvertColors(ccc, pColors_tmp, nColors,
- targetFormat, (Bool *)NULL);
- } else {
- /*
- * Otherwise we have:
- * 1. Device-Independent to Device-Dependent Conversion
- * OR
- * 2. Device-Dependent to Device-Independent Conversion
- *
- * We need to go from oldFormat -> CIEXYZ -> targetFormat
- * adjusting for white points as necessary.
- */
-
- if (XCMS_DI_ID(format)) {
- /*
- * 1. Device-Independent to Device-Dependent Conversion
- */
- if (callWhiteAdjustProc) {
- /*
- * White Point Adjustment
- * Client White Point to Screen White Point
- */
- retval = (*ccc->whitePtAdjProc)(ccc, &clientWhitePt,
- ScreenWhitePointOfCCC(ccc), targetFormat,
- pColors_tmp, nColors, pCompressed);
- } else {
- if (_XcmsDIConvertColors(ccc, pColors_tmp,
- &clientWhitePt, nColors, XcmsCIEXYZFormat)
- == XcmsFailure) {
- goto Failure;
- }
- retval = _XcmsDDConvertColors(ccc, pColors_tmp, nColors,
- targetFormat, pCompressed);
- }
- } else {
- /*
- * 2. Device-Dependent to Device-Independent Conversion
- */
- if (callWhiteAdjustProc) {
- /*
- * White Point Adjustment
- * Screen White Point to Client White Point
- */
- retval = (*ccc->whitePtAdjProc)(ccc,
- ScreenWhitePointOfCCC(ccc), &clientWhitePt,
- targetFormat, pColors_tmp, nColors, pCompressed);
- } else {
- /*
- * Since DD->CIEXYZ, no compression takes place therefore
- * we can pass NULL instead of pCompressed.
- */
- if (_XcmsDDConvertColors(ccc, pColors_tmp, nColors,
- XcmsCIEXYZFormat, (Bool *)NULL) == XcmsFailure) {
- goto Failure;
- }
- retval = _XcmsDIConvertColors(ccc, pColors_tmp,
- &clientWhitePt, nColors, targetFormat);
- }
- }
- }
- } else {
- /*
- * ARRAY HAS MIXED FORMATS.
- */
- if ((contents_flag == (DI_FORMAT | MIX_FORMAT)) &&
- XCMS_DI_ID(targetFormat)) {
- /*
- * Convert from DI to DI in batches of contiguous formats
- *
- * Because DI->DI, WhiteAdjustProc not called.
- */
- retval = ConvertMixedColors(ccc, pColors_tmp, &clientWhitePt,
- nColors, targetFormat, (unsigned char)DI_FORMAT);
- } else if ((contents_flag == (DD_FORMAT | MIX_FORMAT)) &&
- XCMS_DD_ID(targetFormat)) {
- /*
- * Convert from DD to DD in batches of contiguous formats
- *
- * Because DD->DD, WhiteAdjustProc not called.
- */
- retval = ConvertMixedColors(ccc, pColors_tmp,
- (XcmsColor *)NULL, nColors, targetFormat,
- (unsigned char)DD_FORMAT);
- } else if (XCMS_DI_ID(targetFormat)) {
- /*
- * We need to convert from DI-to-DI and DD-to-DI, therefore
- * 1. convert DD specifications to CIEXYZ, then
- * 2. convert all in batches to the target DI format.
- *
- * Note that ConvertMixedColors will call WhiteAdjustProc
- * as necessary.
- */
-
- /*
- * Convert only DD specifications in batches of contiguous formats
- * to CIEXYZ
- *
- * Since DD->CIEXYZ, ConvertMixedColors will apply WhiteAdjustProc
- * if required.
- */
- retval = ConvertMixedColors(ccc, pColors_tmp, &clientWhitePt,
- nColors, XcmsCIEXYZFormat, (unsigned char)DD_FORMAT);
-
- /*
- * Because at this point we may have a mix of DI formats
- * (e.g., CIEXYZ, CIELuv) we must convert the specs to the
- * target DI format in batches of contiguous source formats.
- */
- retval = ConvertMixedColors(ccc, pColors_tmp, &clientWhitePt,
- nColors, targetFormat, (unsigned char)DI_FORMAT);
- } else {
- /*
- * We need to convert from DI-to-DD and DD-to-DD, therefore
- * 1. convert DI specifications to CIEXYZ, then
- * 2. convert all to the DD target format.
- *
- * This allows white point adjustment and gamut compression
- * to be applied to all the color specifications in one
- * swoop if those functions do in fact modify the entire
- * group of color specifications.
- */
-
- /*
- * Convert in batches to CIEXYZ
- *
- * If DD->CIEXYZ, ConvertMixedColors will apply WhiteAdjustProc
- * if required.
- */
- if ((retval = ConvertMixedColors(ccc, pColors_tmp, &clientWhitePt,
- nColors, XcmsCIEXYZFormat,
- (unsigned char)(DI_FORMAT | DD_FORMAT))) == XcmsFailure) {
- goto Failure;
- }
-
- /*
- * Convert all specifications (now in CIEXYZ format) to
- * the target DD format.
- * Since CIEXYZ->DD, compression MAY take place therefore
- * we must pass pCompressed.
- * Note that WhiteAdjustProc must be used if necessary.
- */
- if (callWhiteAdjustProc) {
- /*
- * White Point Adjustment
- * Client White Point to Screen White Point
- */
- retval = (*ccc->whitePtAdjProc)(ccc,
- &clientWhitePt, ScreenWhitePointOfCCC(ccc),
- targetFormat, pColors_tmp, nColors, pCompressed);
- } else {
- retval = _XcmsDDConvertColors(ccc, pColors_tmp, nColors,
- targetFormat, pCompressed);
- }
- }
- }
-
- if (retval != XcmsFailure) {
- memcpy((char *)pColors_in_out, (char *)pColors_tmp,
- nColors * sizeof(XcmsColor));
- }
- if (nColors > 1) {
- Xfree((char *)pColors_tmp);
- }
- return(retval);
-
-Failure:
- if (nColors > 1) {
- Xfree((char *)pColors_tmp);
- }
- return(XcmsFailure);
-}
-
-
-/*
- * NAME
- * XcmsRegFormatOfPrefix
- *
- * SYNOPSIS
- */
-XcmsColorFormat
-_XcmsRegFormatOfPrefix(
- _Xconst char *prefix)
-/*
- * DESCRIPTION
- * Returns a color space ID associated with the specified
- * X Consortium registered color space prefix.
- *
- * RETURNS
- * The color space ID if found;
- * otherwise NULL.
- */
-{
- XcmsRegColorSpaceEntry *pEntry = _XcmsRegColorSpaces;
-
- while (pEntry->prefix != NULL) {
- if (strcmp(prefix, pEntry->prefix) == 0) {
- return(pEntry->id);
- }
- pEntry++;
- }
- return(XcmsUndefinedFormat);
-}
+ +/* + * 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 + * XcmsCvCols.c + * + * DESCRIPTION + * Xcms API routine that converts between the + * device-independent color spaces. + * + * + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include "Xlibint.h" +#include "Xcmsint.h" +#include "Cv.h" + +/* + * LOCAL DEFINES + */ +#define DD_FORMAT 0x01 +#define DI_FORMAT 0x02 +#define MIX_FORMAT 0x04 +#ifndef MAX +# define MAX(x,y) ((x) > (y) ? (x) : (y)) +#endif + + +/************************************************************************ + * * + * PRIVATE ROUTINES * + * * + ************************************************************************/ + +/* + * NAME + * EqualCIEXYZ + * + * SYNOPSIS + */ +static int +EqualCIEXYZ( + XcmsColor *p1, XcmsColor *p2) +/* + * DESCRIPTION + * Compares two XcmsColor structures that are in XcmsCIEXYZFormat + * + * RETURNS + * Returns 1 if equal; 0 otherwise. + * + */ +{ + if (p1->format != XcmsCIEXYZFormat || p2->format != XcmsCIEXYZFormat) { + return(0); + } + if ((p1->spec.CIEXYZ.X != p2->spec.CIEXYZ.X) + || (p1->spec.CIEXYZ.Y != p2->spec.CIEXYZ.Y) + || (p1->spec.CIEXYZ.Z != p2->spec.CIEXYZ.Z)) { + return(0); + } + return(1); +} + + +/* + * NAME + * XcmsColorSpace + * + * SYNOPSIS + */ +static XcmsColorSpace * +ColorSpaceOfID( + XcmsCCC ccc, + XcmsColorFormat id) +/* + * DESCRIPTION + * Returns a pointer to the color space structure + * (XcmsColorSpace) associated with the specified color space + * ID. + * + * RETURNS + * Pointer to matching XcmsColorSpace structure if found; + * otherwise NULL. + */ +{ + XcmsColorSpace **papColorSpaces; + + if (ccc == NULL) { + return(NULL); + } + + /* + * First try Device-Independent color spaces + */ + papColorSpaces = _XcmsDIColorSpaces; + if (papColorSpaces != NULL) { + while (*papColorSpaces != NULL) { + if ((*papColorSpaces)->id == id) { + return(*papColorSpaces); + } + papColorSpaces++; + } + } + + /* + * Next try Device-Dependent color spaces + */ + papColorSpaces = ((XcmsFunctionSet *)ccc->pPerScrnInfo->functionSet)->DDColorSpaces; + if (papColorSpaces != NULL) { + while (*papColorSpaces != NULL) { + if ((*papColorSpaces)->id == id) { + return(*papColorSpaces); + } + papColorSpaces++; + } + } + + return(NULL); +} + + +/* + * NAME + * ValidDIColorSpaceID + * + * SYNOPSIS + */ +static int +ValidDIColorSpaceID( + XcmsColorFormat id) +/* + * DESCRIPTION + * Determines if the specified color space ID is a valid + * Device-Independent color space in the specified Color + * Conversion Context. + * + * RETURNS + * Returns zero if not valid; otherwise non-zero. + */ +{ + XcmsColorSpace **papRec; + papRec = _XcmsDIColorSpaces; + if (papRec != NULL) { + while (*papRec != NULL) { + if ((*papRec)->id == id) { + return(1); + } + papRec++; + } + } + return(0); +} + + +/* + * NAME + * ValidDDColorSpaceID + * + * SYNOPSIS + */ +static int +ValidDDColorSpaceID( + XcmsCCC ccc, + XcmsColorFormat id) +/* + * DESCRIPTION + * Determines if the specified color space ID is a valid + * Device-Dependent color space in the specified Color + * Conversion Context. + * + * RETURNS + * Returns zero if not valid; otherwise non-zero. + */ +{ + XcmsColorSpace **papRec; + + if (ccc->pPerScrnInfo->state != XcmsInitNone) { + papRec = ((XcmsFunctionSet *)ccc->pPerScrnInfo->functionSet)->DDColorSpaces; + while (*papRec != NULL) { + if ((*papRec)->id == id) { + return(1); + } + papRec++; + } + } + return(0); +} + + +/* + * NAME + * ConvertMixedColors - Convert XcmsColor structures + * + * SYNOPSIS + */ +static Status +ConvertMixedColors( + XcmsCCC ccc, + XcmsColor *pColors_in_out, + XcmsColor *pWhitePt, + unsigned int nColors, + XcmsColorFormat targetFormat, + unsigned char format_flag) +/* + * DESCRIPTION + * This routine will only convert the following types of + * batches: + * DI to DI + * DD to DD + * DD to CIEXYZ + * In other words, it will not convert the following types of + * batches: + * DI to DD + * DD to DI(not CIEXYZ) + * + * format_flag: + * 0x01 : convert Device-Dependent only specifications to the + * target format. + * 0x02 : convert Device-Independent only specifications to the + * target format. + * 0x03 : convert all specifications to the target format. + * + * RETURNS + * XcmsFailure if failed, + * XcmsSuccess if none of the color specifications were + * compressed in the conversion process + * XcmsSuccessWithCompression if at least one of the + * color specifications were compressed in the + * conversion process. + * + */ +{ + XcmsColor *pColor, *pColors_start; + XcmsColorFormat format; + Status retval_tmp; + Status retval = XcmsSuccess; + unsigned int iColors; + unsigned int nBatch; + + /* + * Convert array of mixed color specifications in batches of + * contiguous formats to the target format + */ + iColors = 0; + while (iColors < nColors) { + /* + * Find contiguous array of color specifications with the + * same format + */ + pColor = pColors_start = pColors_in_out + iColors; + format = pColors_start->format; + nBatch = 0; + while (iColors < nColors && pColor->format == format) { + pColor++; + nBatch++; + iColors++; + } + if (format != targetFormat) { + /* + * Need to convert this batch from current format to target format. + */ + if (XCMS_DI_ID(format) && (format_flag & DI_FORMAT) && + XCMS_DI_ID(targetFormat)) { + /* + * DI->DI + * + * Format of interest is Device-Independent, + * This batch contains Device-Independent specifications, and + * the Target format is Device-Independent. + */ + retval_tmp = _XcmsDIConvertColors(ccc, pColors_start, pWhitePt, + nBatch, targetFormat); + } else if (XCMS_DD_ID(format) && (format_flag & DD_FORMAT) && + (targetFormat == XcmsCIEXYZFormat)) { + /* + * DD->CIEXYZ + * + * Format of interest is Device-Dependent, + * This batch contains Device-Dependent specifications, and + * the Target format is CIEXYZ. + * + * Since DD->CIEXYZ we can use NULL instead of pCompressed. + */ + if ((ccc->whitePtAdjProc != NULL) && !_XcmsEqualWhitePts(ccc, + pWhitePt, ScreenWhitePointOfCCC(ccc))) { + /* + * Need to call WhiteAdjustProc (Screen White Point to + * White Point). + */ + retval_tmp = (*ccc->whitePtAdjProc)(ccc, + ScreenWhitePointOfCCC(ccc), pWhitePt, + XcmsCIEXYZFormat, pColors_start, nBatch, + (Bool *)NULL); + } else { + retval_tmp = _XcmsDDConvertColors(ccc, pColors_start, + nBatch, XcmsCIEXYZFormat, (Bool *)NULL); + } + } else if (XCMS_DD_ID(format) && (format_flag & DD_FORMAT) && + XCMS_DD_ID(targetFormat)) { + /* + * DD->DD(not CIEXYZ) + * + * Format of interest is Device-Dependent, + * This batch contains Device-Dependent specifications, and + * the Target format is Device-Dependent and not CIEXYZ. + */ + retval_tmp = _XcmsDDConvertColors(ccc, pColors_start, nBatch, + targetFormat, (Bool *)NULL); + } else { + /* + * This routine is called for the wrong reason. + */ + return(XcmsFailure); + } + if (retval_tmp == XcmsFailure) { + return(XcmsFailure); + } + retval = MAX(retval, retval_tmp); + } + } + return(retval); +} + + +/************************************************************************ + * * + * API PRIVATE ROUTINES * + * * + ************************************************************************/ + +/* + * NAME + * _XcmsEqualWhitePts + * + * SYNOPSIS + */ +int +_XcmsEqualWhitePts(XcmsCCC ccc, XcmsColor *pWhitePt1, XcmsColor *pWhitePt2) +/* + * DESCRIPTION + * + * RETURNS + * Returns 0 if not equal; otherwise 1. + * + */ +{ + XcmsColor tmp1, tmp2; + + memcpy((char *)&tmp1, (char *)pWhitePt1, sizeof(XcmsColor)); + memcpy((char *)&tmp2, (char *)pWhitePt2, sizeof(XcmsColor)); + + if (tmp1.format != XcmsCIEXYZFormat) { + if (_XcmsDIConvertColors(ccc, &tmp1, (XcmsColor *) NULL, 1, + XcmsCIEXYZFormat)==0) { + return(0); + } + } + + if (tmp2.format != XcmsCIEXYZFormat) { + if (_XcmsDIConvertColors(ccc, &tmp2, (XcmsColor *) NULL, 1, + XcmsCIEXYZFormat)==0) { + return(0); + } + } + + return (EqualCIEXYZ(&tmp1, &tmp2)); +} + + +/* + * NAME + * _XcmsDIConvertColors - Convert XcmsColor structures + * + * SYNOPSIS + */ +Status +_XcmsDIConvertColors( + XcmsCCC ccc, + XcmsColor *pColors_in_out, + XcmsColor *pWhitePt, + unsigned int nColors, + XcmsColorFormat newFormat) +/* + * DESCRIPTION + * Convert XcmsColor structures to another Device-Independent + * form. + * + * Here are some assumptions that this routine makes: + * 1. The calling routine has already checked if + * pColors_in_out->format == newFormat, therefore + * there is no need to check again here. + * 2. The calling routine has already checked nColors, + * therefore this routine assumes nColors > 0. + * 3. The calling routine may want to convert only between + * CIExyY <-> CIEXYZ <-> CIEuvY + * therefore, this routine allows pWhitePt to equal NULL. + * + * + * RETURNS + * XcmsFailure if failed, + * XcmsSuccess if succeeded. + * + */ +{ + XcmsColorSpace *pFrom, *pTo; + XcmsDIConversionProc *src_to_CIEXYZ, *src_from_CIEXYZ; + XcmsDIConversionProc *dest_to_CIEXYZ, *dest_from_CIEXYZ; + XcmsDIConversionProc *to_CIEXYZ_stop, *from_CIEXYZ_start; + XcmsDIConversionProc *tmp; + + /* + * Allow pWhitePt to equal NULL. This appropriate when converting + * anywhere between: + * CIExyY <-> CIEXYZ <-> CIEuvY + */ + + if (pColors_in_out == NULL || + !ValidDIColorSpaceID(pColors_in_out->format) || + !ValidDIColorSpaceID(newFormat)) { + return(XcmsFailure); + } + + /* + * Get a handle on the function list for the current specification format + */ + if ((pFrom = ColorSpaceOfID(ccc, pColors_in_out->format)) + == NULL) { + return(XcmsFailure); + } + + /* + * Get a handle on the function list for the new specification format + */ + if ((pTo = ColorSpaceOfID(ccc, newFormat)) == NULL) { + return(XcmsFailure); + } + + src_to_CIEXYZ = pFrom->to_CIEXYZ; + src_from_CIEXYZ = pFrom->from_CIEXYZ; + dest_to_CIEXYZ = pTo->to_CIEXYZ; + dest_from_CIEXYZ = pTo->from_CIEXYZ; + + if (pTo->inverse_flag && pFrom->inverse_flag) { + /* + * Find common function pointers + */ + for (to_CIEXYZ_stop = src_to_CIEXYZ; *to_CIEXYZ_stop; to_CIEXYZ_stop++){ + for (tmp = dest_to_CIEXYZ; *tmp; tmp++) { + if (*to_CIEXYZ_stop == *tmp) { + goto Continue; + } + } + } + +Continue: + + /* + * Execute the functions to CIEXYZ, stopping short as necessary + */ + while (src_to_CIEXYZ != to_CIEXYZ_stop) { + if ((*src_to_CIEXYZ++)(ccc, pWhitePt, pColors_in_out, + nColors) == XcmsFailure) { + return(XcmsFailure); + } + } + + /* + * Determine where to start on the from_CIEXYZ path. + */ + from_CIEXYZ_start = dest_from_CIEXYZ; + tmp = src_from_CIEXYZ; + while ((*from_CIEXYZ_start == *tmp) && (*from_CIEXYZ_start != NULL)) { + from_CIEXYZ_start++; + tmp++; + } + + } else { + /* + * The function in at least one of the Color Spaces are not + * complementary, i.e., + * for an i, 0 <= i < n elements + * from_CIEXYZ[i] is not the inverse of to_CIEXYZ[i] + * + * Execute the functions all the way to CIEXYZ + */ + while (*src_to_CIEXYZ) { + if ((*src_to_CIEXYZ++)(ccc, pWhitePt, pColors_in_out, + nColors) == XcmsFailure) { + return(XcmsFailure); + } + } + + /* + * Determine where to start on the from_CIEXYZ path. + */ + from_CIEXYZ_start = dest_from_CIEXYZ; + } + + + /* + * Execute the functions from CIEXYZ. + */ + while (*from_CIEXYZ_start) { + if ((*from_CIEXYZ_start++)(ccc, pWhitePt, pColors_in_out, + nColors) == XcmsFailure) { + return(XcmsFailure); + } + } + + return(XcmsSuccess); +} + + +/* + * NAME + * _XcmsDDConvertColors - Convert XcmsColor structures + * + * SYNOPSIS + */ +Status +_XcmsDDConvertColors( + XcmsCCC ccc, + XcmsColor *pColors_in_out, + unsigned int nColors, + XcmsColorFormat newFormat, + Bool *pCompressed) +/* + * DESCRIPTION + * Convert XcmsColor structures: + * + * 1. From CIEXYZ to Device-Dependent formats (typically RGB and + * RGBi), + * or + * 2. Between Device-Dependent formats (typically RGB and RGBi). + * + * Assumes that these specifications have already been white point + * adjusted if necessary from Client White Point to Screen + * White Point. Therefore, the white point now associated + * with the specifications is the Screen White Point. + * + * pCompressed may be NULL. If so this indicates that the + * calling routine is not interested in knowing exactly which + * color was compressed, if any. + * + * + * RETURNS + * XcmsFailure if failed, + * XcmsSuccess if none of the color specifications were + * compressed in the conversion process + * XcmsSuccessWithCompression if at least one of the + * color specifications were compressed in the + * conversion process. + * + */ +{ + XcmsColorSpace *pFrom, *pTo; + XcmsDDConversionProc *src_to_CIEXYZ, *src_from_CIEXYZ; + XcmsDDConversionProc *dest_to_CIEXYZ, *dest_from_CIEXYZ; + XcmsDDConversionProc *from_CIEXYZ_start, *to_CIEXYZ_stop; + XcmsDDConversionProc *tmp; + int retval; + int hasCompressed = 0; + + if (ccc == NULL || pColors_in_out == NULL) { + return(XcmsFailure); + } + + if (nColors == 0 || pColors_in_out->format == newFormat) { + /* do nothing */ + return(XcmsSuccess); + } + + if (((XcmsFunctionSet *)ccc->pPerScrnInfo->functionSet) == NULL) { + return(XcmsFailure); /* hmm, an internal error? */ + } + + /* + * Its ok if pColors_in_out->format == XcmsCIEXYZFormat + * or + * if newFormat == XcmsCIEXYZFormat + */ + if ( !( ValidDDColorSpaceID(ccc, pColors_in_out->format) + || + (pColors_in_out->format == XcmsCIEXYZFormat)) + || + !(ValidDDColorSpaceID(ccc, newFormat) + || + newFormat == XcmsCIEXYZFormat)) { + return(XcmsFailure); + } + + if ((pFrom = ColorSpaceOfID(ccc, pColors_in_out->format)) == NULL){ + return(XcmsFailure); + } + + if ((pTo = ColorSpaceOfID(ccc, newFormat)) == NULL) { + return(XcmsFailure); + } + + src_to_CIEXYZ = (XcmsDDConversionProc *)pFrom->to_CIEXYZ; + src_from_CIEXYZ = (XcmsDDConversionProc *)pFrom->from_CIEXYZ; + dest_to_CIEXYZ = (XcmsDDConversionProc *)pTo->to_CIEXYZ; + dest_from_CIEXYZ = (XcmsDDConversionProc *)pTo->from_CIEXYZ; + + if (pTo->inverse_flag && pFrom->inverse_flag) { + /* + * Find common function pointers + */ + for (to_CIEXYZ_stop = src_to_CIEXYZ; *to_CIEXYZ_stop; to_CIEXYZ_stop++){ + for (tmp = dest_to_CIEXYZ; *tmp; tmp++) { + if (*to_CIEXYZ_stop == *tmp) { + goto Continue; + } + } + } +Continue: + + /* + * Execute the functions + */ + while (src_to_CIEXYZ != to_CIEXYZ_stop) { + retval = (*src_to_CIEXYZ++)(ccc, pColors_in_out, nColors, + pCompressed); + if (retval == XcmsFailure) { + return(XcmsFailure); + } + hasCompressed |= (retval == XcmsSuccessWithCompression); + } + + /* + * Determine where to start on the from_CIEXYZ path. + */ + from_CIEXYZ_start = dest_from_CIEXYZ; + tmp = src_from_CIEXYZ; + while ((*from_CIEXYZ_start == *tmp) && (*from_CIEXYZ_start != NULL)) { + from_CIEXYZ_start++; + tmp++; + } + + } else { + /* + * The function in at least one of the Color Spaces are not + * complementary, i.e., + * for an i, 0 <= i < n elements + * from_CIEXYZ[i] is not the inverse of to_CIEXYZ[i] + * + * Execute the functions all the way to CIEXYZ + */ + while (*src_to_CIEXYZ) { + retval = (*src_to_CIEXYZ++)(ccc, pColors_in_out, nColors, + pCompressed); + if (retval == XcmsFailure) { + return(XcmsFailure); + } + hasCompressed |= (retval == XcmsSuccessWithCompression); + } + + /* + * Determine where to start on the from_CIEXYZ path. + */ + from_CIEXYZ_start = dest_from_CIEXYZ; + } + + while (*from_CIEXYZ_start) { + retval = (*from_CIEXYZ_start++)(ccc, pColors_in_out, nColors, + pCompressed); + if (retval == XcmsFailure) { + return(XcmsFailure); + } + hasCompressed |= (retval == XcmsSuccessWithCompression); + } + + return(hasCompressed ? XcmsSuccessWithCompression : XcmsSuccess); +} + + +/************************************************************************ + * * + * PUBLIC ROUTINES * + * * + ************************************************************************/ + +/* + * NAME + * XcmsConvertColors - Convert XcmsColor structures + * + * SYNOPSIS + */ +Status +XcmsConvertColors( + XcmsCCC ccc, + XcmsColor *pColors_in_out, + unsigned int nColors, + XcmsColorFormat targetFormat, + Bool *pCompressed) +/* + * DESCRIPTION + * Convert XcmsColor structures to another format + * + * RETURNS + * XcmsFailure if failed, + * XcmsSuccess if succeeded without gamut compression, + * XcmsSuccessWithCompression if succeeded with gamut + * compression. + * + */ +{ + XcmsColor clientWhitePt; + XcmsColor Color1; + XcmsColor *pColors_tmp; + int callWhiteAdjustProc = 0; + XcmsColorFormat format; + Status retval; + unsigned char contents_flag = 0x00; + unsigned int iColors; + + if (ccc == NULL || pColors_in_out == NULL || + !(ValidDIColorSpaceID(targetFormat) || + ValidDDColorSpaceID(ccc, targetFormat))) { + return(XcmsFailure); + } + + /* + * Check formats in color specification array + */ + format = pColors_in_out->format; + for (pColors_tmp = pColors_in_out, iColors = nColors; iColors; pColors_tmp++, iColors--) { + if (!(ValidDIColorSpaceID(pColors_tmp->format) || + ValidDDColorSpaceID(ccc, pColors_tmp->format))) { + return(XcmsFailure); + } + if (XCMS_DI_ID(pColors_tmp->format)) { + contents_flag |= DI_FORMAT; + } else { + contents_flag |= DD_FORMAT; + } + if (pColors_tmp->format != format) { + contents_flag |= MIX_FORMAT; + } + } + + /* + * Check if we need the Client White Point. + */ + if ((contents_flag & DI_FORMAT) || XCMS_DI_ID(targetFormat)) { + /* To proceed, we need to get the Client White Point */ + memcpy((char *)&clientWhitePt, (char *)&ccc->clientWhitePt, + sizeof(XcmsColor)); + if (clientWhitePt.format == XcmsUndefinedFormat) { + /* + * Client White Point is undefined, therefore set to the Screen + * White Point. + * Since Client White Point == Screen White Point, WhiteAdjustProc + * is not called. + */ + memcpy((char *)&clientWhitePt, + (char *)&ccc->pPerScrnInfo->screenWhitePt, + sizeof(XcmsColor)); + } else if ((ccc->whitePtAdjProc != NULL) && !_XcmsEqualWhitePts(ccc, + &clientWhitePt, ScreenWhitePointOfCCC(ccc))) { + /* + * Client White Point != Screen White Point, and WhiteAdjustProc + * is not NULL, therefore, will need to call it when + * converting between DI and DD specifications. + */ + callWhiteAdjustProc = 1; + } + } + + /* + * Make copy of array of color specifications + */ + if (nColors > 1) { + pColors_tmp = (XcmsColor *) Xmalloc(nColors * sizeof(XcmsColor)); + } else { + pColors_tmp = &Color1; + } + memcpy((char *)pColors_tmp, (char *)pColors_in_out, + nColors * sizeof(XcmsColor)); + + /* + * zero out pCompressed + */ + if (pCompressed) { + bzero((char *)pCompressed, nColors * sizeof(Bool)); + } + + if (contents_flag == DD_FORMAT || contents_flag == DI_FORMAT) { + /* + * ENTIRE ARRAY IS IN ONE FORMAT. + */ + if (XCMS_DI_ID(format) && XCMS_DI_ID(targetFormat)) { + /* + * DI-to-DI only conversion + */ + retval = _XcmsDIConvertColors(ccc, pColors_tmp, + &clientWhitePt, nColors, targetFormat); + } else if (XCMS_DD_ID(format) && XCMS_DD_ID(targetFormat)) { + /* + * DD-to-DD only conversion + * Since DD->DD there will be no compressed thus we can + * pass NULL instead of pCompressed. + */ + retval = _XcmsDDConvertColors(ccc, pColors_tmp, nColors, + targetFormat, (Bool *)NULL); + } else { + /* + * Otherwise we have: + * 1. Device-Independent to Device-Dependent Conversion + * OR + * 2. Device-Dependent to Device-Independent Conversion + * + * We need to go from oldFormat -> CIEXYZ -> targetFormat + * adjusting for white points as necessary. + */ + + if (XCMS_DI_ID(format)) { + /* + * 1. Device-Independent to Device-Dependent Conversion + */ + if (callWhiteAdjustProc) { + /* + * White Point Adjustment + * Client White Point to Screen White Point + */ + retval = (*ccc->whitePtAdjProc)(ccc, &clientWhitePt, + ScreenWhitePointOfCCC(ccc), targetFormat, + pColors_tmp, nColors, pCompressed); + } else { + if (_XcmsDIConvertColors(ccc, pColors_tmp, + &clientWhitePt, nColors, XcmsCIEXYZFormat) + == XcmsFailure) { + goto Failure; + } + retval = _XcmsDDConvertColors(ccc, pColors_tmp, nColors, + targetFormat, pCompressed); + } + } else { + /* + * 2. Device-Dependent to Device-Independent Conversion + */ + if (callWhiteAdjustProc) { + /* + * White Point Adjustment + * Screen White Point to Client White Point + */ + retval = (*ccc->whitePtAdjProc)(ccc, + ScreenWhitePointOfCCC(ccc), &clientWhitePt, + targetFormat, pColors_tmp, nColors, pCompressed); + } else { + /* + * Since DD->CIEXYZ, no compression takes place therefore + * we can pass NULL instead of pCompressed. + */ + if (_XcmsDDConvertColors(ccc, pColors_tmp, nColors, + XcmsCIEXYZFormat, (Bool *)NULL) == XcmsFailure) { + goto Failure; + } + retval = _XcmsDIConvertColors(ccc, pColors_tmp, + &clientWhitePt, nColors, targetFormat); + } + } + } + } else { + /* + * ARRAY HAS MIXED FORMATS. + */ + if ((contents_flag == (DI_FORMAT | MIX_FORMAT)) && + XCMS_DI_ID(targetFormat)) { + /* + * Convert from DI to DI in batches of contiguous formats + * + * Because DI->DI, WhiteAdjustProc not called. + */ + retval = ConvertMixedColors(ccc, pColors_tmp, &clientWhitePt, + nColors, targetFormat, (unsigned char)DI_FORMAT); + } else if ((contents_flag == (DD_FORMAT | MIX_FORMAT)) && + XCMS_DD_ID(targetFormat)) { + /* + * Convert from DD to DD in batches of contiguous formats + * + * Because DD->DD, WhiteAdjustProc not called. + */ + retval = ConvertMixedColors(ccc, pColors_tmp, + (XcmsColor *)NULL, nColors, targetFormat, + (unsigned char)DD_FORMAT); + } else if (XCMS_DI_ID(targetFormat)) { + /* + * We need to convert from DI-to-DI and DD-to-DI, therefore + * 1. convert DD specifications to CIEXYZ, then + * 2. convert all in batches to the target DI format. + * + * Note that ConvertMixedColors will call WhiteAdjustProc + * as necessary. + */ + + /* + * Convert only DD specifications in batches of contiguous formats + * to CIEXYZ + * + * Since DD->CIEXYZ, ConvertMixedColors will apply WhiteAdjustProc + * if required. + */ + retval = ConvertMixedColors(ccc, pColors_tmp, &clientWhitePt, + nColors, XcmsCIEXYZFormat, (unsigned char)DD_FORMAT); + + /* + * Because at this point we may have a mix of DI formats + * (e.g., CIEXYZ, CIELuv) we must convert the specs to the + * target DI format in batches of contiguous source formats. + */ + retval = ConvertMixedColors(ccc, pColors_tmp, &clientWhitePt, + nColors, targetFormat, (unsigned char)DI_FORMAT); + } else { + /* + * We need to convert from DI-to-DD and DD-to-DD, therefore + * 1. convert DI specifications to CIEXYZ, then + * 2. convert all to the DD target format. + * + * This allows white point adjustment and gamut compression + * to be applied to all the color specifications in one + * swoop if those functions do in fact modify the entire + * group of color specifications. + */ + + /* + * Convert in batches to CIEXYZ + * + * If DD->CIEXYZ, ConvertMixedColors will apply WhiteAdjustProc + * if required. + */ + if ((retval = ConvertMixedColors(ccc, pColors_tmp, &clientWhitePt, + nColors, XcmsCIEXYZFormat, + (unsigned char)(DI_FORMAT | DD_FORMAT))) == XcmsFailure) { + goto Failure; + } + + /* + * Convert all specifications (now in CIEXYZ format) to + * the target DD format. + * Since CIEXYZ->DD, compression MAY take place therefore + * we must pass pCompressed. + * Note that WhiteAdjustProc must be used if necessary. + */ + if (callWhiteAdjustProc) { + /* + * White Point Adjustment + * Client White Point to Screen White Point + */ + retval = (*ccc->whitePtAdjProc)(ccc, + &clientWhitePt, ScreenWhitePointOfCCC(ccc), + targetFormat, pColors_tmp, nColors, pCompressed); + } else { + retval = _XcmsDDConvertColors(ccc, pColors_tmp, nColors, + targetFormat, pCompressed); + } + } + } + + if (retval != XcmsFailure) { + memcpy((char *)pColors_in_out, (char *)pColors_tmp, + nColors * sizeof(XcmsColor)); + } + if (nColors > 1) { + Xfree((char *)pColors_tmp); + } + return(retval); + +Failure: + if (nColors > 1) { + Xfree((char *)pColors_tmp); + } + return(XcmsFailure); +} + + +/* + * NAME + * XcmsRegFormatOfPrefix + * + * SYNOPSIS + */ +XcmsColorFormat +_XcmsRegFormatOfPrefix( + _Xconst char *prefix) +/* + * DESCRIPTION + * Returns a color space ID associated with the specified + * X Consortium registered color space prefix. + * + * RETURNS + * The color space ID if found; + * otherwise NULL. + */ +{ + XcmsRegColorSpaceEntry *pEntry = _XcmsRegColorSpaces; + + while (pEntry->prefix != NULL) { + if (strcmp(prefix, pEntry->prefix) == 0) { + return(pEntry->id); + } + pEntry++; + } + return(XcmsUndefinedFormat); +} |