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 Fetching category of 28 * the macros used by the generic scaleloop function. 29 * 30 * This implementation can load either 8-bit or 32-bit pixels from an 31 * array of bytes or longs where the data for pixel (srcX, srcY) is 32 * loaded from index (srcOff + srcY * srcScan + srcX) in the array. 33 * 34 * This file can be used to provide the default implementation of the 35 * Fetching macros to handle all input sizes. 36 */ 37 38#define DeclareInputVars \ 39 pixptr srcP; \ 40 int src32; 41 42#define InitInput(srcBPP) \ 43 do { \ 44 switch (srcBPP) { \ 45 case 8: src32 = 0; break; \ 46 case 32: src32 = 1; break; \ 47 default: \ 48 SignalError(0, JAVAPKG "InternalError", \ 49 "unsupported source depth"); \ 50 return SCALEFAILURE; \ 51 } \ 52 } while (0) 53 54#define SetInputRow(pixels, srcOff, srcScan, srcY, srcOY) \ 55 do { \ 56 srcP.vp = pixels; \ 57 if (src32) { \ 58 srcP.ip += srcOff + ((srcY-srcOY) * srcScan); \ 59 } else { \ 60 srcP.bp += srcOff + ((srcY-srcOY) * srcScan); \ 61 } \ 62 } while (0) 63 64#define GetPixelInc() \ 65 (src32 ? *srcP.ip++ : ((int) *srcP.bp++)) 66 67#define GetPixel(srcX) \ 68 (src32 ? srcP.ip[srcX] : ((int) srcP.bp[srcX])) 69 70#define InputPixelInc(X) \ 71 do { \ 72 if (src32) { \ 73 srcP.ip += X; \ 74 } else { \ 75 srcP.bp += X; \ 76 } \ 77 } while (0) 78 79#define VerifyPixelRange(pixel, mapsize) \ 80 do { \ 81 if (((unsigned int) pixel) >= mapsize) { \ 82 SignalError(0, JAVAPKG "ArrayIndexOutOfBoundsException", 0);\ 83 return SCALEFAILURE; \ 84 } \ 85 } while (0) 86