1/* 2 * Copyright (c) 1996, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26/* 27 * This file contains macro definitions for the Alpha category of the 28 * macros used by the generic scaleloop function. 29 * 30 * This implementation of the Alpha macros will ignore all alpha 31 * information. It also provides an empty expansion of the IfAlpha 32 * macro which keeps the other macro sets in the image package from 33 * wasting time and space on code to fetch or store the alpha 34 * information. This file is only applicable when the incoming 35 * data is known to be entirely opaque and there is not yet any 36 * image mask or alpha buffer associated with the output data. 37 */ 38 39/* 40 * The macro IfAlpha is used by the varous pixel conversion macros 41 * to conditionally compile code that is only needed if alpha values 42 * are going to be used. 43 */ 44#define IfAlpha(statements) /* Omit alpha handling code */ 45 46#define DeclareAlphaVars 47 48#define InitAlpha(cvdata, dstY, dstX1, dstX2) \ 49 do {} while (0) 50 51#define StartAlphaRow(cvdata, DSTX1, DSTY) \ 52 do {} while (0) 53 54#define ApplyAlpha(cvdata, dstX, dstY, alpha) \ 55 do {} while (0) 56 57#define EndMaskLine() \ 58 do {} while (0) 59