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+/* $Xorg: AddSF.c,v 1.3 2000/08/17 19:44:29 cpqbld 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
+ * XcmsAddSF.c
+ *
+ * DESCRIPTION
+ * Source for XcmsAddFunctionSet
+ *
+ *
+ */
+/* $XFree86$ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include "Xlibint.h"
+#include "Xcmsint.h"
+#include "Cv.h"
+
+/*
+ * DEFINES
+ */
+#define NextUnregDdCsID(lastid) \
+ (XCMS_UNREG_ID(lastid) ? ++lastid : XCMS_FIRST_UNREG_DD_ID)
+#define MIN(x,y) ((x) > (y) ? (y) : (x))
+
+
+/*
+ * NAME
+ * XcmsAddFunctionSet - Add an Screen Color Characterization
+ * Function Set
+ *
+ * SYNOPSIS
+ */
+Status
+XcmsAddFunctionSet(XcmsFunctionSet *pNewFS)
+/*
+ * DESCRIPTION
+ * Additional Screen Color Characterization Function Sets are
+ * managed on a global basis. This means that with exception
+ * of the provided DD color spaces:
+ * RGB and RGBi
+ * DD color spaces may have different XcmsColorFormat IDs between
+ * clients. So, you must be careful when using XcmsColorFormat
+ * across clients! Use the routines XcmsFormatOfPrefix()
+ * and XcmsPrefixOfFormat() appropriately.
+ *
+ * RETURNS
+ * XcmsSuccess if succeeded, otherwise XcmsFailure
+ *
+ * CAVEATS
+ * Additional Screen Color Characterization Function Sets
+ * should be added prior to any use of the routine
+ * XcmsCreateCCC(). If not, XcmsCCC structures created
+ * prior to the call of this routines will not have had
+ * a chance to initialize using the added Screen Color
+ * Characterization Function Set.
+ */
+{
+ XcmsFunctionSet **papSCCFuncSets = _XcmsSCCFuncSets;
+ XcmsColorSpace **papNewCSs;
+ XcmsColorSpace *pNewCS, **paptmpCS;
+ XcmsColorFormat lastID = 0;
+
+
+ if (papSCCFuncSets != NULL) {
+ if ((papNewCSs = pNewFS->DDColorSpaces) == NULL) {
+ /*
+ * Error, new Screen Color Characterization Function Set
+ * missing color spaces
+ */
+ return(XcmsFailure);
+ }
+ while ((pNewCS = *papNewCSs++) != NULL) {
+ if ((pNewCS->id = _XcmsRegFormatOfPrefix(pNewCS->prefix)) != 0) {
+ if (XCMS_DI_ID(pNewCS->id)) {
+ /* This is a Device-Independent Color Space */
+ return(XcmsFailure);
+ }
+ /*
+ * REGISTERED DD Color Space
+ * therefore use the registered ID.
+ */
+ } else {
+ /*
+ * UNREGISTERED DD Color Space
+ * then see if the color space is already in
+ * _XcmsDDColorSpaces.
+ * a. If same prefix, then use the same ID.
+ * b. Otherwise, use a new ID.
+ */
+ for (paptmpCS = _XcmsDDColorSpaces; *paptmpCS != NULL;
+ paptmpCS++){
+ lastID = MIN(lastID, (*paptmpCS)->id);
+ if (strcmp(pNewCS->prefix, (*paptmpCS)->prefix) == 0) {
+ pNewCS->id = (*paptmpCS)->id;
+ break;
+ }
+ }
+ if (pNewCS->id == 0) {
+ /* still haven't found one */
+ pNewCS->id = NextUnregDdCsID(lastID);
+ if ((paptmpCS = (XcmsColorSpace **)_XcmsPushPointerArray(
+ (XPointer *) _XcmsDDColorSpaces,
+ (XPointer) pNewCS,
+ (XPointer *) _XcmsDDColorSpacesInit)) == NULL) {
+ return(XcmsFailure);
+ }
+ _XcmsDDColorSpaces = paptmpCS;
+ }
+ }
+ }
+ }
+ if ((papSCCFuncSets = (XcmsFunctionSet **)
+ _XcmsPushPointerArray((XPointer *) _XcmsSCCFuncSets,
+ (XPointer) pNewFS,
+ (XPointer *)_XcmsSCCFuncSetsInit)) == NULL) {
+ return(XcmsFailure);
+ }
+ _XcmsSCCFuncSets = papSCCFuncSets;
+
+ return(XcmsSuccess);
+}