0N/A/*
2362N/A * Copyright (c) 1996, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
2362N/A * published by the Free Software Foundation. Oracle designates this
0N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
2362N/A * questions.
0N/A */
0N/A
0N/A/*
0N/A * This file contains macro definitions for the Decoding category of
0N/A * the macros used by the generic scaleloop function.
0N/A *
0N/A * This implementation can decode the pixel information associated
0N/A * with any Java DirectColorModel object. This implemenation will
0N/A * scale the decoded color components to 8-bit quantities if needed.
0N/A * Another file is provided to optimize DCM parsing when the masks
0N/A * are guaranteed to be at least 8-bits wide. This implementation
0N/A * examines some of the private fields of the DirectColorModel
0N/A * object and decodes the red, green, blue, and possibly alpha values
0N/A * directly rather than calling the getRGB method on the Java object.
0N/A */
0N/A
0N/A/*
0N/A * These definitions vector the standard macro names to the "DCM"
0N/A * versions of those macros only if the "DecodeDeclared" keyword has
0N/A * not yet been defined elsewhere. The "DecodeDeclared" keyword is
0N/A * also defined here to claim ownership of the primary implementation
0N/A * even though this file does not rely on the definitions in any other
0N/A * files.
0N/A */
0N/A#ifndef DecodeDeclared
0N/A#define DeclareDecodeVars DeclareDCMVars
0N/A#define InitPixelDecode(CM) InitPixelDCM(unhand(CM))
0N/A#define PixelDecode PixelDCMDecode
0N/A#define DecodeDeclared
0N/A#endif
0N/A
0N/A#include "java_awt_image_DirectColorModel.h"
0N/A
0N/A#define DeclareDCMVars \
0N/A IfAlpha(int alpha_mask; \
0N/A int alpha_scale; \
0N/A unsigned int alpha_off;) \
0N/A int red_mask, green_mask, blue_mask; \
0N/A int red_scale, green_scale, blue_scale; \
0N/A unsigned int red_off, green_off, blue_off; \
0N/A int scale;
0N/A
0N/A#define InitPixelDCM(CM) \
0N/A do { \
0N/A Classjava_awt_image_DirectColorModel *dcm = \
0N/A (Classjava_awt_image_DirectColorModel *) CM; \
0N/A red_mask = dcm->red_mask; \
0N/A red_off = dcm->red_offset; \
0N/A red_scale = dcm->red_scale; \
0N/A green_mask = dcm->green_mask; \
0N/A green_off = dcm->green_offset; \
0N/A green_scale = dcm->green_scale; \
0N/A blue_mask = dcm->blue_mask; \
0N/A blue_off = dcm->blue_offset; \
0N/A blue_scale = dcm->blue_scale; \
0N/A IfAlpha(alpha_mask = dcm->alpha_mask; \
0N/A alpha_off = dcm->alpha_offset; \
0N/A alpha_scale = dcm->alpha_scale;) \
0N/A scale = (red_scale | green_scale | blue_scale \
0N/A IfAlpha(| alpha_scale)); \
0N/A } while (0)
0N/A
0N/A#define PixelDCMDecode(CM, pixel, red, green, blue, alpha) \
0N/A do { \
0N/A IfAlpha(alpha = ((alpha_mask == 0) \
0N/A ? 255 \
0N/A : ((pixel & alpha_mask) >> alpha_off));) \
0N/A red = ((pixel & red_mask) >> red_off); \
0N/A green = ((pixel & green_mask) >> green_off); \
0N/A blue = ((pixel & blue_mask) >> blue_off); \
0N/A if (scale) { \
0N/A if (red_scale) { \
0N/A red = red * 255 / (red_scale); \
0N/A } \
0N/A if (green_scale) { \
0N/A green = green * 255 / (green_scale); \
0N/A } \
0N/A if (blue_scale) { \
0N/A blue = blue * 255 / (blue_scale); \
0N/A } \
0N/A IfAlpha(if (alpha_scale) { \
0N/A alpha = alpha * 255 / (alpha_scale); \
0N/A }) \
0N/A } \
0N/A } while (0)