| /* |
| * 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 Fetching category of |
| * the macros used by the generic scaleloop function. |
| * |
| * This implementation can load 8-bit pixels from an array of bytes |
| * where the data for pixel (srcX, srcY) is loaded from index |
| * (srcOff + srcY * srcScan + srcX) in the array. |
| */ |
| |
| #define DeclareInputVars \ |
| pixptr srcP; |
| |
| #define InitInput(srcBPP) \ |
| img_check(srcBPP == 8) |
| |
| #define SetInputRow(pixels, srcOff, srcScan, srcY, srcOY) \ |
| srcP.vp = pixels; \ |
| srcP.bp += srcOff + ((srcY-srcOY) * srcScan) |
| |
| #define GetPixelInc() \ |
| ((int) *srcP.bp++) |
| |
| #define GetPixel(srcX) \ |
| ((int) srcP.bp[srcX]) |
| |
| #define InputPixelInc(X) \ |
| srcP.bp += X |
| |
| #define VerifyPixelRange(pixel, mapsize) \ |
| do { \ |
| img_check(((unsigned int) pixel) <= 255); \ |
| img_check(mapsize >= 256); \ |
| } while (0) |
