| /* |
| * 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 Decoding category of |
| * the macros used by the generic scaleloop function. |
| * |
| * This implementation can decode the pixel information associated |
| * with any valid Java ColorModel object by dynamically invoking the |
| * getRGB method on that object. The implementation will also |
| * optimally handle pixel data coming from IndexColorModel and |
| * DirectColorModel objects so that it can be used as the default |
| * fallback implementation for corner cases without imposing the |
| * enormous performance penalty required for handling the custom |
| * ColorModel objects in those cases. |
| * |
| * This file can be used to provide the default implementation of the |
| * Decoding macros, handling all color conversion cases. |
| */ |
| |
| /* |
| * These definitions vector the standard macro names to the "Any" |
| * versions of those macros. The "DecodeDeclared" keyword is also |
| * defined to indicate to the other include files that they are not |
| * defining the primary implementation. All other include files |
| * will check for the existance of the "DecodeDeclared" keyword |
| * and define their implementations of the Decoding macros using |
| * more specific names without overriding the standard names. |
| * This is done so that the other files can be included here to |
| * reuse their implementations for the specific optimization cases. |
| */ |
| #define DecodeDeclared |
| #define DeclareDecodeVars DeclareAnyVars |
| #define InitPixelDecode InitPixelAny |
| #define PixelDecode PixelAnyDecode |
| |
| /* Include the optimal implementations for Index and Direct ColorModels */ |
| #include "img_icm.h" |
| #include "img_dcm.h" |
| |
| #define ICMTYPE 0 |
| #define DCMTYPE 1 |
| #define OCMTYPE 2 |
| |
| #define DeclareAnyVars \ |
| DeclareICMVars \ |
| DeclareDCMVars \ |
| struct execenv *ee; \ |
| struct methodblock *mb = 0; \ |
| int CMtype; |
| |
| #define InitPixelAny(CM) \ |
| do { \ |
| Classjava_awt_image_ColorModel *cm = \ |
| (Classjava_awt_image_ColorModel *) unhand(CM); \ |
| ImgCMData *icmd = (ImgCMData *) cm->pData; \ |
| if ((icmd->type & IMGCV_CMBITS) == IMGCV_ICM) { \ |
| CMtype = ICMTYPE; \ |
| InitPixelICM(cm); \ |
| } else if (((icmd->type & IMGCV_CMBITS) == IMGCV_DCM) \ |
| || ((icmd->type & IMGCV_CMBITS) == IMGCV_DCM8)) { \ |
| CMtype = DCMTYPE; \ |
| InitPixelDCM(cm); \ |
| } else { \ |
| CMtype = OCMTYPE; \ |
| ee = EE(); \ |
| mb = icmd->mb; \ |
| } \ |
| } while (0) |
| |
| #define PixelAnyDecode(CM, pixel, red, green, blue, alpha) \ |
| do { \ |
| switch (CMtype) { \ |
| case ICMTYPE: \ |
| PixelICMDecode(CM, pixel, red, green, blue, alpha); \ |
| break; \ |
| case DCMTYPE: \ |
| PixelDCMDecode(CM, pixel, red, green, blue, alpha); \ |
| break; \ |
| case OCMTYPE: \ |
| pixel = do_execute_java_method(ee, (void *) CM, \ |
| "getRGB","(I)I", mb, \ |
| FALSE, pixel); \ |
| if (exceptionOccurred(ee)) { \ |
| return SCALEFAILURE; \ |
| } \ |
| IfAlpha(alpha = pixel >> ALPHASHIFT;) \ |
| red = (pixel >> REDSHIFT) & 0xff; \ |
| green = (pixel >> GREENSHIFT) & 0xff; \ |
| blue = (pixel >> BLUESHIFT) & 0xff; \ |
| break; \ |
| } \ |
| } while (0) |
