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+/* $Xorg: CCC.c,v 1.4 2001/02/09 02:03:31 xorgcvs Exp $ */
+
+/*
+ * Code and supporting documentation (c) Copyright 1990 1991 Tektronix, Inc.
+ * All Rights Reserved
+ *
+ * This file is a component of an X Window System-specific implementation
+ * of Xcms based on the TekColor Color Management System. Permission is
+ * hereby granted to use, copy, modify, sell, and otherwise distribute this
+ * software and its documentation for any purpose and without fee, provided
+ * that this copyright, permission, and disclaimer notice is reproduced in
+ * all copies of this software and in supporting documentation. TekColor
+ * is a trademark of Tektronix, Inc.
+ *
+ * Tektronix makes no representation about the suitability of this software
+ * for any purpose. It is provided "as is" and with all faults.
+ *
+ * TEKTRONIX DISCLAIMS ALL WARRANTIES APPLICABLE TO THIS SOFTWARE,
+ * INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE. IN NO EVENT SHALL TEKTRONIX BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA, OR PROFITS, WHETHER IN AN ACTION OF
+ * CONTRACT, NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR THE PERFORMANCE OF THIS SOFTWARE.
+ *
+ *
+ * NAME
+ * XcmsCCC.c - Color Conversion Context Routines
+ *
+ * DESCRIPTION
+ * Routines to create, access, and free Color Conversion
+ * Context structures.
+ *
+ *
+ */
+/* $XFree86: xc/lib/X11/CCC.c,v 1.4 2001/12/14 19:53:56 dawes Exp $ */
+
+/*
+
+Copyright 1994, 1998 The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall
+not be used in advertising or otherwise to promote the sale, use or
+other dealings in this Software without prior written authorization
+from The Open Group.
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <stdio.h>
+#include "Xlibint.h"
+#include "Xcmsint.h"
+#include "Cv.h"
+
+
+
+/************************************************************************
+ * *
+ * PUBLIC INTERFACES *
+ * *
+ ************************************************************************/
+
+/*
+ * NAME
+ * XcmsCreateCCC
+ *
+ * SYNOPSIS
+ */
+
+XcmsCCC
+XcmsCreateCCC(dpy, screenNumber, visual, clientWhitePt, gamutCompProc,
+ gamutCompClientData, whitePtAdjProc, whitePtAdjClientData)
+ Display *dpy;
+ int screenNumber;
+ Visual *visual;
+ XcmsColor *clientWhitePt;
+ XcmsCompressionProc gamutCompProc;
+ XPointer gamutCompClientData;
+ XcmsWhiteAdjustProc whitePtAdjProc;
+ XPointer whitePtAdjClientData;
+/*
+ * DESCRIPTION
+ * Given a Display, Screen, Visual, etc., this routine creates
+ * an appropriate Color Conversion Context.
+ *
+ * RETURNS
+ * Returns NULL if failed; otherwise address of the newly
+ * created XcmsCCC.
+ *
+ */
+{
+ XcmsCCC pDefaultCCC = XcmsDefaultCCC(dpy, screenNumber);
+ XcmsCCC newccc;
+ XcmsIntensityMap *pIMap;
+ XcmsPerScrnInfo *pNewScrnInfo;
+
+ if (pDefaultCCC == NULL ||
+ !(newccc = (XcmsCCC) Xcalloc(1, (unsigned) sizeof(XcmsCCCRec)))) {
+ return(NULL);
+ }
+
+ /*
+ * Should inherit the following as result of a memmove():
+ * dpy
+ * screenNumber
+ * pPerScrnInfo
+ */
+ memcpy((char *)newccc, (char *)pDefaultCCC, sizeof(XcmsCCCRec));
+ if (clientWhitePt) {
+ memcpy((char *)&newccc->clientWhitePt, (char *)clientWhitePt,
+ sizeof(XcmsColor));
+ }
+ if (gamutCompProc) {
+ newccc->gamutCompProc = gamutCompProc;
+ }
+ if (gamutCompClientData) {
+ newccc->gamutCompClientData = gamutCompClientData;
+ }
+ if (whitePtAdjProc) {
+ newccc->whitePtAdjProc = whitePtAdjProc;
+ }
+ if (whitePtAdjClientData) {
+ newccc->whitePtAdjClientData = whitePtAdjClientData;
+ }
+
+ /*
+ * Now check our list of per-Visual Intensity tables.
+ * If one exists replace the pPerScrnInfo.
+ */
+ if ((pIMap = _XcmsGetIntensityMap(dpy, visual)) != NULL) {
+ if (!(pNewScrnInfo = (XcmsPerScrnInfo *)
+ Xcalloc(1, (unsigned) sizeof(XcmsPerScrnInfo)))) {
+ Xfree(newccc);
+ return(NULL);
+ }
+ memcpy((char *)pNewScrnInfo, (char *)newccc->pPerScrnInfo,
+ sizeof(XcmsPerScrnInfo));
+ pNewScrnInfo->screenData = pIMap->screenData;
+ newccc->pPerScrnInfo = pNewScrnInfo;
+ }
+
+ /*
+ * Set visual component
+ */
+ newccc->visual = visual;
+
+ return(newccc);
+}
+
+
+/*
+ * NAME
+ * XcmsDefaultCCC
+ *
+ * SYNOPSIS
+ */
+XcmsCCC
+XcmsDefaultCCC(dpy, screenNumber)
+ Display *dpy;
+ int screenNumber;
+/*
+ * DESCRIPTION
+ * Given a Display and Screen, this routine creates
+ * returns the Screen's default Color Conversion Context.
+ * Note that a Screen's default CCC is built with the
+ * screen default visual.
+ *
+ * RETURNS
+ * Returns NULL if failed; otherwise address of the
+ * XcmsCCC for the Screen's default CCC.
+ *
+ */
+{
+ XcmsCCC ccc;
+
+
+ if ((screenNumber < 0) || (screenNumber >= ScreenCount(dpy))) {
+ return((XcmsCCC)NULL);
+ }
+
+ /*
+ * Check if the XcmsCCC's for each screen has been created
+ */
+ if ((XcmsCCC)dpy->cms.defaultCCCs == NULL) {
+ if (!_XcmsInitDefaultCCCs(dpy)) {
+ return((XcmsCCC)NULL);
+ }
+ }
+
+ ccc = (XcmsCCC)dpy->cms.defaultCCCs + screenNumber;
+
+ if (!ccc->pPerScrnInfo) {
+ /*
+ * Need to create the XcmsPerScrnInfo structure. The
+ * _XcmsInitScrnInfo routine will create the XcmsPerScrnInfo
+ * structure as well as initialize its functionSet and pScreenData
+ * components.
+ */
+ if (!_XcmsInitScrnInfo(dpy, screenNumber)) {
+ return((XcmsCCC)NULL);
+ }
+ return(ccc);
+ } else {
+ /*
+ * If ccc->pPerScrnInfo->state == XcmsInitSuccess,
+ * then the pPerScrnInfo component has already been initialized
+ * therefore, just return ccc.
+ * If ccc->pPerScrnInfo->state == XcmsInitFailure,
+ * then this means that we already attempted to initialize
+ * the pPerScrnInfo component but failed therefore stuffing
+ * the pPerScrnInfo component with defaults. Just return ccc.
+ * If ccc->pPerScrnInfo->state == XcmsInitNone,
+ * then attempt to initialize the pPerScrnInfo component.
+ */
+ switch (ccc->pPerScrnInfo->state) {
+ case XcmsInitFailure :
+ /* fall through */
+ case XcmsInitSuccess :
+ return(ccc);
+ case XcmsInitNone :
+ /* XcmsPerScreenInfo has not been initialized */
+ if (!_XcmsInitScrnInfo(dpy, screenNumber)) {
+ return((XcmsCCC)NULL);
+ }
+ return(ccc);
+ default :
+ return((XcmsCCC)NULL);
+ }
+ }
+}
+
+
+/*
+ * NAME
+ * XcmsFreeCCC
+ *
+ * SYNOPSIS
+ */
+void
+XcmsFreeCCC(ccc)
+ XcmsCCC ccc;
+/*
+ * DESCRIPTION
+ * Frees memory associated with a Color Conversion Context
+ * that was created with XcmsCreateCCC().
+ *
+ * RETURNS
+ * void
+ *
+ */
+{
+ if (ccc->dpy->cms.defaultCCCs &&
+ ccc == ((XcmsCCC)ccc->dpy->cms.defaultCCCs) + ccc->screenNumber) {
+ /* do not allow clients to free DefaultCCC's */
+ return;
+ }
+
+ /*
+ * Note that XcmsPerScrnInfo sub-structures are freed here only if
+ * they are for visuals that have per-Visual intensity tables.
+ * Otherwise the XcmsPerScrnInfo structure is being shared!
+ * For the latter, there is only one allocated per Screen and it just
+ * so happens * that we place its initial reference is placed in the
+ * default CCC. The routine _XcmsFreeDefaultCCCs frees them.
+ */
+ if (_XcmsGetIntensityMap(ccc->dpy, ccc->visual) != NULL) {
+ Xfree(ccc->pPerScrnInfo);
+ }
+
+ Xfree(ccc);
+}