| /* |
| * Copyright (c) 1996, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * This file contains macro definitions for the Scaling category of |
| * the macros used by the generic scaleloop function. |
| * |
| * This implementation performs no input resampling whatsoever and |
| * is only valid if the input data is delivered at the exact same |
| * resolution as the output data is being generated. At the same |
| * time, this implementation of the Scaling macros is the most optimal |
| * such implementation. |
| */ |
| |
| #define DeclareScaleVars \ |
| int dstX, dstY, dstX2, dstY2; |
| |
| #define SRCX dstX |
| #define SRCY dstY |
| #define DSTX dstX |
| #define DSTY dstY |
| #define DSTX1 srcOX |
| #define DSTY1 srcOY |
| #define DSTX2 dstX2 |
| #define DSTY2 dstY2 |
| |
| #define InitScale(pixels, srcOff, srcScan, \ |
| srcOX, srcOY, srcW, srcH, \ |
| srcTW, srcTH, dstTW, dstTH) \ |
| do { \ |
| dstX2 = srcOX + srcW; \ |
| dstY2 = srcOY + srcH; \ |
| SetInputRow(pixels, srcOff, srcScan, srcOY, srcOY); \ |
| } while (0) |
| |
| #define RowLoop(srcOY) \ |
| for (dstY = srcOY; dstY < dstY2; dstY++) |
| |
| #define RowSetup(srcTH, dstTH, srcTW, dstTW, \ |
| srcOY, pixels, srcOff, srcScan) \ |
| do {} while (0) |
| |
| #define ColLoop(srcOX) \ |
| for (dstX = srcOX; dstX < dstX2; dstX++) |
| |
| #define ColSetup(srcTW, dstTW, pixel) \ |
| pixel = GetPixelInc() |
| |
| #define RowEnd(srcTH, dstTH, srcW, srcScan) \ |
| InputPixelInc(srcScan - srcW) |
