Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1

Summary: Imported nx-X11-3.1.0-1.tar.gz
Keywords:

Imported nx-X11-3.1.0-1.tar.gz
into Git repository

1 files changed, 163 insertions, 0 deletions

diff --git a/nx-X11/lib/X11/HVCMxVs.c b/nx-X11/lib/X11/HVCMxVs.c
new file mode 100644
index 000000000..d90afa8be
--- /dev/null
+++ b/nx-X11/lib/X11/HVCMxVs.c
@@ -0,0 +1,163 @@
+/* $Xorg: HVCMxVs.c,v 1.3 2000/08/17 19:44:37 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.  TekColor is a
+ * trademark of Tektronix, Inc.  The term "TekHVC" designates a particular
+ * color space that is the subject of U.S. Patent No. 4,985,853 (equivalent
+ * foreign patents pending).  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:
+ * 
+ * 1. This copyright, permission, and disclaimer notice is reproduced in
+ *    all copies of this software and any modification thereof and in
+ *    supporting documentation; 
+ * 2. Any color-handling application which displays TekHVC color
+ *    cooordinates identifies these as TekHVC color coordinates in any
+ *    interface that displays these coordinates and in any associated
+ *    documentation;
+ * 3. The term "TekHVC" is always used, and is only used, in association
+ *    with the mathematical derivations of the TekHVC Color Space,
+ *    including those provided in this file and any equivalent pathways and
+ *    mathematical derivations, regardless of digital (e.g., floating point
+ *    or integer) representation.
+ * 
+ * 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
+ *		TekHVCMxVs.c
+ *
+ *	DESCRIPTION
+ *		Source for the XcmsTekHVCQueryMaxVSamples() gamut boundary
+ *		querying routine.
+ */
+/* $XFree86: xc/lib/X11/HVCMxVs.c,v 1.3 2001/01/17 19:41:37 dawes Exp $ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include "Xlibint.h"
+#include "Xcmsint.h"
+#include "Cv.h"
+
+
+/************************************************************************
+ *									*
+ *			 PUBLIC ROUTINES				*
+ *									*
+ ************************************************************************/
+
+/*
+ *	NAME
+ *		XcmsTekHVCQueryMaxVSamples - Compute a set of value/chroma
+ *						pairs.
+ *
+ *	SYNOPSIS
+ */
+Status
+XcmsTekHVCQueryMaxVSamples(ccc, hue, pColor_in_out, nSamples)
+    XcmsCCC ccc;
+    XcmsFloat hue;
+    XcmsColor *pColor_in_out;
+    unsigned int nSamples;
+
+/*
+ *	DESCRIPTION
+ *		Return a set of values and chromas for the input Hue.
+ *		This routine will take any color as input.  
+ *		It returns TekHVC colors.
+ *
+ *		Since this routine works with the value within
+ *		pColor_in_out intermediate results may be returned
+ *		even though it may be invalid.
+ *
+ *	ASSUMPTIONS
+ *		This routine assumes that the white point associated with
+ *		the color specification is the Screen White Point.  The
+ *		Screen White Point will also be associated with the
+ *		returned color specification.
+ *
+ *	RETURNS
+ *		XcmsFailure - Failure
+ *		XcmsSuccess - Succeeded
+ *
+ */
+{
+    XcmsCCCRec myCCC;
+    XcmsColor *pHVC;
+    XcmsRGBi rgb_saved;
+    unsigned short nI;
+    XcmsFloat nT;
+
+    /*
+     * Check Arguments
+     */
+    if (ccc == NULL || pColor_in_out == NULL || nSamples == 0) {
+	return(XcmsFailure);
+    }
+
+    /*
+     * Insure TekHVC installed
+     */
+    if (XcmsAddColorSpace(&XcmsTekHVCColorSpace) == XcmsFailure) {
+	return(XcmsFailure);
+    }
+
+    /* setup the CCC to use for the conversions. */
+    memcpy ((char *) &myCCC, (char *) ccc, sizeof(XcmsCCCRec));
+    myCCC.clientWhitePt.format = XcmsUndefinedFormat;
+    myCCC.gamutCompProc = (XcmsCompressionProc) NULL;
+
+    /* Step 1: compute the maximum value and chroma for this hue. */
+
+
+    /* save the Hue for use later. */
+    while (hue < 0.0) {
+	hue += 360.0;
+    }
+    while (hue > 360.0) {
+	hue -= 360.0;
+    }
+    pColor_in_out->spec.TekHVC.H = hue;
+    pColor_in_out->format = XcmsTekHVCFormat;
+
+    /* Get the maximum value and chroma point for this hue */
+    if (_XcmsTekHVCQueryMaxVCRGB(&myCCC, pColor_in_out->spec.TekHVC.H,
+	    pColor_in_out, (XcmsRGBi *)&rgb_saved) == XcmsFailure) {
+	return (XcmsFailure);
+    }
+
+    /* Step 2:  Convert each of the RGBi's to HVC's */
+    pHVC = pColor_in_out;
+    for (nI = 0; nI < nSamples; nI++, pHVC++) {
+	nT = (XcmsFloat) nI / (XcmsFloat) nSamples;
+	pHVC->spec.RGBi.red   = rgb_saved.red * (1.0 - nT) + nT;
+	pHVC->spec.RGBi.green = rgb_saved.green * (1.0 - nT) + nT;
+	pHVC->spec.RGBi.blue  = rgb_saved.blue * (1.0 - nT) + nT;
+	pHVC->format          = XcmsRGBiFormat;
+	pHVC->pixel           = pColor_in_out->pixel;
+	/* convert from RGB to HVC */
+	if (_XcmsConvertColorsWithWhitePt(&myCCC, pHVC,
+		&myCCC.pPerScrnInfo->screenWhitePt, 1, XcmsTekHVCFormat,
+		(Bool *) NULL) == XcmsFailure) {
+	    return(XcmsFailure);
+	}
+
+	/* make sure to return the input hue */
+	pHVC->spec.TekHVC.H = hue;
+    }
+
+    return(XcmsSuccess);
+}