2362N/A * Copyright (c) 2000, 2008, Oracle and/or its affiliates. All rights reserved. 0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 0N/A * This code is free software; you can redistribute it and/or modify it 0N/A * under the terms of the GNU General Public License version 2 only, as 2362N/A * published by the Free Software Foundation. Oracle designates this 0N/A * particular file as subject to the "Classpath" exception as provided 2362N/A * by Oracle in the LICENSE file that accompanied this code. 0N/A * This code is distributed in the hope that it will be useful, but WITHOUT 0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 0N/A * version 2 for more details (a copy is included in the LICENSE file that 0N/A * accompanied this code). 0N/A * You should have received a copy of the GNU General Public License version 0N/A * 2 along with this work; if not, write to the Free Software Foundation, 0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 0N/A * This file contains macro and type definitions used by the macros in 0N/A * Note: The following (original) equation was incorrect: 0N/A * gray = (((19595*r) + (38470*g) + (7471*b) + 32768) / 65536); 0N/A * The new component coefficients were derived from the following equation: 0N/A * k*rf*255 + k*gf*255 + k*bf*255 = 2^24 - 1 0N/A * The new calculated coefficients are: 0N/A * Thus the new equation would be: 0N/A * gray = (((19672*r) + (38620*g) + (7500*b) + 128) / 255) 0N/A * but it has been tweaked so the faster "divide by 256" can be performed and 0N/A * the "add 128" can be removed. Therefore, the resultant formula is optimal: 0N/A * gray = (((19672*r) + (38621*g) + (7500*b)) / 256) 0N/A ((r) = (g) = (b) = ((
pRas)[x] >>
8))
0N/A#
endif /* UshortGray_h_Included */