img_scaleloop.h revision 10731:e66f69113b89
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 the skeleton code for generating functions to 28 * convert image data for the Java AWT. Nearly everything below is 29 * a call to a macro that is defined in one of the header files 30 * included in this directory. A description of the various macro 31 * packages available for customizing this skeleton and how to use 32 * this file to construct specific conversion functions is available 33 * in the README file that should also be included in this directory. 34 */ 35 36ImgConvertFcn NAME; 37 38int NAME(struct Hjava_awt_image_ColorModel *colormodel, 39 int srcOX, int srcOY, int srcW, int srcH, 40 void *srcpix, int srcOff, int srcBPP, int srcScan, 41 int srcTotalWidth, int srcTotalHeight, 42 int dstTotalWidth, int dstTotalHeight, 43 ImgConvertData *cvdata, ImgColorData *clrdata) 44{ 45 DeclareScaleVars 46 DeclareInputVars 47 DeclareDecodeVars 48 DeclareAlphaVars 49 DeclareDitherVars 50 DeclareOutputVars 51 unsigned int pixel; 52 int red, green, blue; 53 IfAlpha(int alpha;) 54 55 InitInput(srcBPP); 56 InitScale(srcpix, srcOff, srcScan, 57 srcOX, srcOY, srcW, srcH, 58 srcTotalWidth, srcTotalHeight, 59 dstTotalWidth, dstTotalHeight); 60 InitOutput(cvdata, clrdata, DSTX1, DSTY1); 61 InitAlpha(cvdata, DSTY1, DSTX1, DSTX2); 62 63 InitPixelDecode(colormodel); 64 InitDither(cvdata, clrdata, dstTotalWidth); 65 66 RowLoop(srcOY) { 67 RowSetup(srcTotalHeight, dstTotalHeight, 68 srcTotalWidth, dstTotalWidth, 69 srcOY, srcpix, srcOff, srcScan); 70 StartDitherLine(cvdata, DSTX1, DSTY); 71 StartAlphaRow(cvdata, DSTX1, DSTY); 72 ColLoop(srcOX) { 73 ColSetup(srcTotalWidth, dstTotalWidth, pixel); 74 PixelDecode(colormodel, pixel, red, green, blue, alpha); 75 ApplyAlpha(cvdata, DSTX, DSTY, alpha); 76 DitherPixel(DSTX, DSTY, pixel, red, green, blue); 77 PutPixelInc(pixel, red, green, blue); 78 } 79 EndMaskLine(); 80 EndOutputRow(cvdata, DSTY, DSTX1, DSTX2); 81 RowEnd(srcTotalHeight, dstTotalHeight, srcW, srcScan); 82 } 83 DitherBufComplete(cvdata, DSTX1); 84 BufComplete(cvdata, DSTX1, DSTY1, DSTX2, DSTY2); 85 return SCALESUCCESS; 86} 87