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authormarha <marha@users.sourceforge.net>2010-07-08 06:58:33 +0000
committermarha <marha@users.sourceforge.net>2010-07-08 06:58:33 +0000
commitd1e8cd61e0fa02a5b415a5c161b355c95f45ae14 (patch)
tree6ef2e067b387b0e145e65be0f05fb071b8e60364 /libX11/src/xcms/cmsInt.c
parent5da15e274b35656568f59602f2e3fd00d5718879 (diff)
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git update 8/7/2010
Diffstat (limited to 'libX11/src/xcms/cmsInt.c')
-rw-r--r--libX11/src/xcms/cmsInt.c825
1 files changed, 412 insertions, 413 deletions
diff --git a/libX11/src/xcms/cmsInt.c b/libX11/src/xcms/cmsInt.c
index b48036522..47c54a701 100644
--- a/libX11/src/xcms/cmsInt.c
+++ b/libX11/src/xcms/cmsInt.c
@@ -1,413 +1,412 @@
-
-/*
- * 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
- * XcmsInt.c - Xcms API utility routines
- *
- * DESCRIPTION
- * Xcms Application Program Interface (API) utility
- * routines for hanging information directly onto
- * the Display structure.
- *
- *
- */
-
-/* #define NEED_EVENTS */
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#include <stdio.h>
-#include "Xlibint.h"
-#include "Xcmsint.h"
-#include "Cv.h"
-
-#ifndef XCMSCOMPPROC
-# define XCMSCOMPPROC XcmsTekHVCClipC
-#endif
-
-/* forward/static */
-static void _XcmsFreeDefaultCCCs(Display *dpy);
-
-
-/************************************************************************
- * *
- * API PRIVATE ROUTINES *
- * *
- ************************************************************************/
-
-/*
- * NAME
- * _XcmsCopyPointerArray
- *
- * SYNOPSIS
- */
-XPointer *
-_XcmsCopyPointerArray(
- XPointer *pap)
-/*
- * DESCRIPTION
- * Copies an array of NULL terminated pointers.
- *
- * RETURNS
- * Returns NULL if failed; otherwise the address to
- * the copy.
- *
- */
-{
- XPointer *newArray;
- char **tmp;
- int n;
-
- for (tmp = pap, n = 0; *tmp != NULL; tmp++, n++);
- n++; /* add 1 to include the NULL pointer */
-
- if ((newArray = (XPointer *)Xmalloc(n * sizeof(XPointer)))) {
- memcpy((char *)newArray, (char *)pap,
- (unsigned)(n * sizeof(XPointer)));
- }
- return((XPointer *)newArray);
-}
-
-/*
- * NAME
- * _XcmsFreePointerArray
- *
- * SYNOPSIS
- */
-void
-_XcmsFreePointerArray(
- XPointer *pap)
-/*
- * DESCRIPTION
- * Frees an array of NULL terminated pointers.
- *
- * RETURNS
- * void
- *
- */
-{
- Xfree(pap);
-}
-
-/*
- * NAME
- * _XcmsPushPointerArray
- *
- * SYNOPSIS
- */
-XPointer *
-_XcmsPushPointerArray(
- XPointer *pap,
- XPointer p,
- XPointer *papNoFree)
-/*
- * DESCRIPTION
- * Places the specified pointer at the head of an array of NULL
- * terminated pointers.
- *
- * RETURNS
- * Returns NULL if failed; otherwise the address to
- * the head of the array.
- *
- */
-{
- XPointer *newArray;
- char **tmp;
- int n;
-
- for (tmp = pap, n = 0; *tmp != NULL; tmp++, n++);
-
- /* add 2: 1 for the new pointer and another for the NULL pointer */
- n += 2;
-
- if ((newArray = (XPointer *)Xmalloc(n * sizeof(XPointer)))) {
- memcpy((char *)(newArray+1),(char *)pap,
- (unsigned)((n-1) * sizeof(XPointer)));
- *newArray = p;
- }
- if (pap != papNoFree) {
- _XcmsFreePointerArray(pap);
- }
- return((XPointer *)newArray);
-}
-
-/*
- * NAME
- * _XcmsInitDefaultCCCs
- *
- * SYNOPSIS
- */
-int
-_XcmsInitDefaultCCCs(
- Display *dpy)
-/*
- * DESCRIPTION
- * Initializes the Xcms per Display Info structure
- * (XcmsPerDpyInfo).
- *
- * RETURNS
- * Returns 0 if failed; otherwise non-zero.
- *
- */
-{
- int nScrn = ScreenCount(dpy);
- int i;
- XcmsCCC ccc;
-
- if (nScrn <= 0) {
- return(0);
- }
-
- /*
- * Create an array of XcmsCCC structures, one for each screen.
- * They serve as the screen's default CCC.
- */
- if (!(ccc = (XcmsCCC)
- Xcalloc((unsigned)nScrn, (unsigned) sizeof(XcmsCCCRec)))) {
- return(0);
- }
- dpy->cms.defaultCCCs = (XPointer)ccc;
- dpy->free_funcs->defaultCCCs = _XcmsFreeDefaultCCCs;
-
- for (i = 0; i < nScrn; i++, ccc++) {
- ccc->dpy = dpy;
- ccc->screenNumber = i;
- ccc->visual = DefaultVisual(dpy, i);
- /*
- * Used calloc to allocate memory so:
- * ccc->clientWhitePt->format == XcmsUndefinedFormat
- * ccc->gamutCompProc == NULL
- * ccc->whitePtAdjProc == NULL
- * ccc->pPerScrnInfo = NULL
- *
- * Don't need to create XcmsPerScrnInfo and its functionSet and
- * pScreenData components until the default CCC is accessed.
- * Note that the XcmsDefaultCCC routine calls _XcmsInitScrnInto
- * to do this.
- */
- ccc->gamutCompProc = XCMSCOMPPROC;
- }
-
- return(1);
-}
-
-
-/*
- * NAME
- * _XcmsFreeDefaultCCCs - Free Default CCCs and its PerScrnInfo
- *
- * SYNOPSIS
- */
-static void
-_XcmsFreeDefaultCCCs(
- Display *dpy)
-/*
- * DESCRIPTION
- * This routine frees the default XcmsCCC's associated with
- * each screen and its associated substructures as neccessary.
- *
- * RETURNS
- * void
- *
- *
- */
-{
- int nScrn = ScreenCount(dpy);
- XcmsCCC ccc;
- int i;
-
- /*
- * Free Screen data in each DefaultCCC
- * Do not use XcmsFreeCCC here because it will not free
- * DefaultCCC's.
- */
- ccc = (XcmsCCC)dpy->cms.defaultCCCs;
- for (i = nScrn; i--; ccc++) {
- /*
- * Check if XcmsPerScrnInfo exists.
- *
- * This is the only place where XcmsPerScrnInfo structures
- * are freed since there is only one allocated per Screen.
- * It just so happens that we place its reference in the
- * default CCC.
- */
- if (ccc->pPerScrnInfo) {
- /* Check if SCCData exists */
- if (ccc->pPerScrnInfo->state != XcmsInitNone
- && ccc->pPerScrnInfo->screenData) {
- (*((XcmsFunctionSet *)ccc->pPerScrnInfo->functionSet)->screenFreeProc)
- (ccc->pPerScrnInfo->screenData);
- }
- Xfree(ccc->pPerScrnInfo);
- }
- }
-
- /*
- * Free the array of XcmsCCC structures
- */
- Xfree(dpy->cms.defaultCCCs);
- dpy->cms.defaultCCCs = (XPointer)NULL;
-}
-
-
-
-/*
- * NAME
- * _XcmsInitScrnInfo
- *
- * SYNOPSIS
- */
-int
-_XcmsInitScrnInfo(
- register Display *dpy,
- int screenNumber)
-/*
- * DESCRIPTION
- * Given a display and screen number, this routine attempts
- * to initialize the Xcms per Screen Info structure
- * (XcmsPerScrnInfo).
- *
- * RETURNS
- * Returns zero if initialization failed; non-zero otherwise.
- */
-{
- XcmsFunctionSet **papSCCFuncSet = _XcmsSCCFuncSets;
- XcmsCCC defaultccc;
-
- /*
- * Check if the XcmsCCC's for each screen has been created.
- * Really dont need to be created until some routine uses the Xcms
- * API routines.
- */
- if ((XcmsCCC)dpy->cms.defaultCCCs == NULL) {
- if (!_XcmsInitDefaultCCCs(dpy)) {
- return(0);
- }
- }
-
- defaultccc = (XcmsCCC)dpy->cms.defaultCCCs + screenNumber;
-
- /*
- * For each SCCFuncSet, try its pInitScrnFunc.
- * If the function succeeds, then we got it!
- */
-
- if (!defaultccc->pPerScrnInfo) {
- /*
- * This is one of two places where XcmsPerScrnInfo structures
- * are allocated. There is one allocated per Screen that is
- * shared among visuals that do not have specific intensity
- * tables. Other XcmsPerScrnInfo structures are created
- * for the latter (see XcmsCreateCCC). The ones created
- * here are referenced by the default CCC.
- */
- if (!(defaultccc->pPerScrnInfo = (XcmsPerScrnInfo *)
- Xcalloc(1, (unsigned) sizeof(XcmsPerScrnInfo)))) {
- return(0);
- }
- defaultccc->pPerScrnInfo->state = XcmsInitNone;
- }
-
- while (*papSCCFuncSet != NULL) {
- if ((*(*papSCCFuncSet)->screenInitProc)(dpy, screenNumber,
- defaultccc->pPerScrnInfo)) {
- defaultccc->pPerScrnInfo->state = XcmsInitSuccess;
- return(1);
- }
- papSCCFuncSet++;
- }
-
- /*
- * Use Default SCCData
- */
- return(_XcmsLRGB_InitScrnDefault(dpy, screenNumber, defaultccc->pPerScrnInfo));
-}
-
-
-/*
- * NAME
- * _XcmsFreeIntensityMaps
- *
- * SYNOPSIS
- */
-void
-_XcmsFreeIntensityMaps(
- Display *dpy)
-/*
- * DESCRIPTION
- * Frees all XcmsIntensityMap structures in the linked list
- * and sets dpy->cms.perVisualIntensityMaps to NULL.
- *
- * RETURNS
- * void
- *
- */
-{
- XcmsIntensityMap *pNext, *pFree;
-
- pNext = (XcmsIntensityMap *)dpy->cms.perVisualIntensityMaps;
- while (pNext != NULL) {
- pFree = pNext;
- pNext = pNext->pNext;
- (*pFree->pFreeScreenData)(pFree->screenData);
- /* Now free the XcmsIntensityMap structure */
- Xfree(pFree);
- }
- dpy->cms.perVisualIntensityMaps = (XPointer)NULL;
-}
-
-
-/*
- * NAME
- * _XcmsGetIntensityMap
- *
- * SYNOPSIS
- */
-XcmsIntensityMap *
-_XcmsGetIntensityMap(
- Display *dpy,
- Visual *visual)
-/*
- * DESCRIPTION
- * Attempts to return a per-Visual intensity map.
- *
- * RETURNS
- * Pointer to the XcmsIntensityMap structure if found;
- * otherwise NULL
- *
- */
-{
- VisualID targetID = visual->visualid;
- XcmsIntensityMap *pNext;
-
- pNext = (XcmsIntensityMap *)dpy->cms.perVisualIntensityMaps;
- while (pNext != NULL) {
- if (targetID == pNext->visualID) {
- return(pNext);
- }
- pNext = pNext->pNext;
- }
- return((XcmsIntensityMap *)NULL);
-}
+
+/*
+ * 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
+ * XcmsInt.c - Xcms API utility routines
+ *
+ * DESCRIPTION
+ * Xcms Application Program Interface (API) utility
+ * routines for hanging information directly onto
+ * the Display structure.
+ *
+ *
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <stdio.h>
+#include "Xlibint.h"
+#include "Xcmsint.h"
+#include "Cv.h"
+
+#ifndef XCMSCOMPPROC
+# define XCMSCOMPPROC XcmsTekHVCClipC
+#endif
+
+/* forward/static */
+static void _XcmsFreeDefaultCCCs(Display *dpy);
+
+
+/************************************************************************
+ * *
+ * API PRIVATE ROUTINES *
+ * *
+ ************************************************************************/
+
+/*
+ * NAME
+ * _XcmsCopyPointerArray
+ *
+ * SYNOPSIS
+ */
+XPointer *
+_XcmsCopyPointerArray(
+ XPointer *pap)
+/*
+ * DESCRIPTION
+ * Copies an array of NULL terminated pointers.
+ *
+ * RETURNS
+ * Returns NULL if failed; otherwise the address to
+ * the copy.
+ *
+ */
+{
+ XPointer *newArray;
+ char **tmp;
+ int n;
+
+ for (tmp = pap, n = 0; *tmp != NULL; tmp++, n++);
+ n++; /* add 1 to include the NULL pointer */
+
+ if ((newArray = (XPointer *)Xmalloc(n * sizeof(XPointer)))) {
+ memcpy((char *)newArray, (char *)pap,
+ (unsigned)(n * sizeof(XPointer)));
+ }
+ return((XPointer *)newArray);
+}
+
+/*
+ * NAME
+ * _XcmsFreePointerArray
+ *
+ * SYNOPSIS
+ */
+void
+_XcmsFreePointerArray(
+ XPointer *pap)
+/*
+ * DESCRIPTION
+ * Frees an array of NULL terminated pointers.
+ *
+ * RETURNS
+ * void
+ *
+ */
+{
+ Xfree(pap);
+}
+
+/*
+ * NAME
+ * _XcmsPushPointerArray
+ *
+ * SYNOPSIS
+ */
+XPointer *
+_XcmsPushPointerArray(
+ XPointer *pap,
+ XPointer p,
+ XPointer *papNoFree)
+/*
+ * DESCRIPTION
+ * Places the specified pointer at the head of an array of NULL
+ * terminated pointers.
+ *
+ * RETURNS
+ * Returns NULL if failed; otherwise the address to
+ * the head of the array.
+ *
+ */
+{
+ XPointer *newArray;
+ char **tmp;
+ int n;
+
+ for (tmp = pap, n = 0; *tmp != NULL; tmp++, n++);
+
+ /* add 2: 1 for the new pointer and another for the NULL pointer */
+ n += 2;
+
+ if ((newArray = (XPointer *)Xmalloc(n * sizeof(XPointer)))) {
+ memcpy((char *)(newArray+1),(char *)pap,
+ (unsigned)((n-1) * sizeof(XPointer)));
+ *newArray = p;
+ }
+ if (pap != papNoFree) {
+ _XcmsFreePointerArray(pap);
+ }
+ return((XPointer *)newArray);
+}
+
+/*
+ * NAME
+ * _XcmsInitDefaultCCCs
+ *
+ * SYNOPSIS
+ */
+int
+_XcmsInitDefaultCCCs(
+ Display *dpy)
+/*
+ * DESCRIPTION
+ * Initializes the Xcms per Display Info structure
+ * (XcmsPerDpyInfo).
+ *
+ * RETURNS
+ * Returns 0 if failed; otherwise non-zero.
+ *
+ */
+{
+ int nScrn = ScreenCount(dpy);
+ int i;
+ XcmsCCC ccc;
+
+ if (nScrn <= 0) {
+ return(0);
+ }
+
+ /*
+ * Create an array of XcmsCCC structures, one for each screen.
+ * They serve as the screen's default CCC.
+ */
+ if (!(ccc = (XcmsCCC)
+ Xcalloc((unsigned)nScrn, (unsigned) sizeof(XcmsCCCRec)))) {
+ return(0);
+ }
+ dpy->cms.defaultCCCs = (XPointer)ccc;
+ dpy->free_funcs->defaultCCCs = _XcmsFreeDefaultCCCs;
+
+ for (i = 0; i < nScrn; i++, ccc++) {
+ ccc->dpy = dpy;
+ ccc->screenNumber = i;
+ ccc->visual = DefaultVisual(dpy, i);
+ /*
+ * Used calloc to allocate memory so:
+ * ccc->clientWhitePt->format == XcmsUndefinedFormat
+ * ccc->gamutCompProc == NULL
+ * ccc->whitePtAdjProc == NULL
+ * ccc->pPerScrnInfo = NULL
+ *
+ * Don't need to create XcmsPerScrnInfo and its functionSet and
+ * pScreenData components until the default CCC is accessed.
+ * Note that the XcmsDefaultCCC routine calls _XcmsInitScrnInto
+ * to do this.
+ */
+ ccc->gamutCompProc = XCMSCOMPPROC;
+ }
+
+ return(1);
+}
+
+
+/*
+ * NAME
+ * _XcmsFreeDefaultCCCs - Free Default CCCs and its PerScrnInfo
+ *
+ * SYNOPSIS
+ */
+static void
+_XcmsFreeDefaultCCCs(
+ Display *dpy)
+/*
+ * DESCRIPTION
+ * This routine frees the default XcmsCCC's associated with
+ * each screen and its associated substructures as neccessary.
+ *
+ * RETURNS
+ * void
+ *
+ *
+ */
+{
+ int nScrn = ScreenCount(dpy);
+ XcmsCCC ccc;
+ int i;
+
+ /*
+ * Free Screen data in each DefaultCCC
+ * Do not use XcmsFreeCCC here because it will not free
+ * DefaultCCC's.
+ */
+ ccc = (XcmsCCC)dpy->cms.defaultCCCs;
+ for (i = nScrn; i--; ccc++) {
+ /*
+ * Check if XcmsPerScrnInfo exists.
+ *
+ * This is the only place where XcmsPerScrnInfo structures
+ * are freed since there is only one allocated per Screen.
+ * It just so happens that we place its reference in the
+ * default CCC.
+ */
+ if (ccc->pPerScrnInfo) {
+ /* Check if SCCData exists */
+ if (ccc->pPerScrnInfo->state != XcmsInitNone
+ && ccc->pPerScrnInfo->screenData) {
+ (*((XcmsFunctionSet *)ccc->pPerScrnInfo->functionSet)->screenFreeProc)
+ (ccc->pPerScrnInfo->screenData);
+ }
+ Xfree(ccc->pPerScrnInfo);
+ }
+ }
+
+ /*
+ * Free the array of XcmsCCC structures
+ */
+ Xfree(dpy->cms.defaultCCCs);
+ dpy->cms.defaultCCCs = (XPointer)NULL;
+}
+
+
+
+/*
+ * NAME
+ * _XcmsInitScrnInfo
+ *
+ * SYNOPSIS
+ */
+int
+_XcmsInitScrnInfo(
+ register Display *dpy,
+ int screenNumber)
+/*
+ * DESCRIPTION
+ * Given a display and screen number, this routine attempts
+ * to initialize the Xcms per Screen Info structure
+ * (XcmsPerScrnInfo).
+ *
+ * RETURNS
+ * Returns zero if initialization failed; non-zero otherwise.
+ */
+{
+ XcmsFunctionSet **papSCCFuncSet = _XcmsSCCFuncSets;
+ XcmsCCC defaultccc;
+
+ /*
+ * Check if the XcmsCCC's for each screen has been created.
+ * Really dont need to be created until some routine uses the Xcms
+ * API routines.
+ */
+ if ((XcmsCCC)dpy->cms.defaultCCCs == NULL) {
+ if (!_XcmsInitDefaultCCCs(dpy)) {
+ return(0);
+ }
+ }
+
+ defaultccc = (XcmsCCC)dpy->cms.defaultCCCs + screenNumber;
+
+ /*
+ * For each SCCFuncSet, try its pInitScrnFunc.
+ * If the function succeeds, then we got it!
+ */
+
+ if (!defaultccc->pPerScrnInfo) {
+ /*
+ * This is one of two places where XcmsPerScrnInfo structures
+ * are allocated. There is one allocated per Screen that is
+ * shared among visuals that do not have specific intensity
+ * tables. Other XcmsPerScrnInfo structures are created
+ * for the latter (see XcmsCreateCCC). The ones created
+ * here are referenced by the default CCC.
+ */
+ if (!(defaultccc->pPerScrnInfo = (XcmsPerScrnInfo *)
+ Xcalloc(1, (unsigned) sizeof(XcmsPerScrnInfo)))) {
+ return(0);
+ }
+ defaultccc->pPerScrnInfo->state = XcmsInitNone;
+ }
+
+ while (*papSCCFuncSet != NULL) {
+ if ((*(*papSCCFuncSet)->screenInitProc)(dpy, screenNumber,
+ defaultccc->pPerScrnInfo)) {
+ defaultccc->pPerScrnInfo->state = XcmsInitSuccess;
+ return(1);
+ }
+ papSCCFuncSet++;
+ }
+
+ /*
+ * Use Default SCCData
+ */
+ return(_XcmsLRGB_InitScrnDefault(dpy, screenNumber, defaultccc->pPerScrnInfo));
+}
+
+
+/*
+ * NAME
+ * _XcmsFreeIntensityMaps
+ *
+ * SYNOPSIS
+ */
+void
+_XcmsFreeIntensityMaps(
+ Display *dpy)
+/*
+ * DESCRIPTION
+ * Frees all XcmsIntensityMap structures in the linked list
+ * and sets dpy->cms.perVisualIntensityMaps to NULL.
+ *
+ * RETURNS
+ * void
+ *
+ */
+{
+ XcmsIntensityMap *pNext, *pFree;
+
+ pNext = (XcmsIntensityMap *)dpy->cms.perVisualIntensityMaps;
+ while (pNext != NULL) {
+ pFree = pNext;
+ pNext = pNext->pNext;
+ (*pFree->pFreeScreenData)(pFree->screenData);
+ /* Now free the XcmsIntensityMap structure */
+ Xfree(pFree);
+ }
+ dpy->cms.perVisualIntensityMaps = (XPointer)NULL;
+}
+
+
+/*
+ * NAME
+ * _XcmsGetIntensityMap
+ *
+ * SYNOPSIS
+ */
+XcmsIntensityMap *
+_XcmsGetIntensityMap(
+ Display *dpy,
+ Visual *visual)
+/*
+ * DESCRIPTION
+ * Attempts to return a per-Visual intensity map.
+ *
+ * RETURNS
+ * Pointer to the XcmsIntensityMap structure if found;
+ * otherwise NULL
+ *
+ */
+{
+ VisualID targetID = visual->visualid;
+ XcmsIntensityMap *pNext;
+
+ pNext = (XcmsIntensityMap *)dpy->cms.perVisualIntensityMaps;
+ while (pNext != NULL) {
+ if (targetID == pNext->visualID) {
+ return(pNext);
+ }
+ pNext = pNext->pNext;
+ }
+ return((XcmsIntensityMap *)NULL);
+}