| /* |
| * Copyright (c) 2000, 2008, 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. |
| */ |
| |
| #ifndef UshortGray_h_Included |
| #define UshortGray_h_Included |
| |
| #include "IntDcm.h" |
| |
| /* |
| * This file contains macro and type definitions used by the macros in |
| * LoopMacros.h to manipulate a surface of type "UshortGray". |
| */ |
| |
| typedef jushort UshortGrayPixelType; |
| typedef jushort UshortGrayDataType; |
| |
| #define UshortGrayIsOpaque 1 |
| |
| #define UshortGrayPixelStride 2 |
| #define UshortGrayBitsPerPixel 16 |
| |
| #define DeclareUshortGrayLoadVars(PREFIX) |
| #define DeclareUshortGrayStoreVars(PREFIX) |
| #define SetUshortGrayStoreVarsYPos(PREFIX, pRasInfo, y) |
| #define SetUshortGrayStoreVarsXPos(PREFIX, pRasInfo, x) |
| #define InitUshortGrayLoadVars(PREFIX, pRasInfo) |
| #define InitUshortGrayStoreVarsY(PREFIX, pRasInfo) |
| #define InitUshortGrayStoreVarsX(PREFIX, pRasInfo) |
| #define NextUshortGrayStoreVarsX(PREFIX) |
| #define NextUshortGrayStoreVarsY(PREFIX) |
| #define DeclareUshortGrayPixelData(PREFIX) |
| #define ExtractUshortGrayPixelData(PIXEL, PREFIX) |
| |
| #define UshortGrayXparLutEntry -1 |
| #define UshortGrayIsXparLutEntry(pix) (pix < 0) |
| #define StoreUshortGrayNonXparFromArgb StoreUshortGrayFrom1IntArgb |
| |
| |
| /* |
| * Note: The following (original) equation was incorrect: |
| * gray = (((19595*r) + (38470*g) + (7471*b) + 32768) / 65536); |
| * |
| * The new component coefficients were derived from the following equation: |
| * k*rf*255 + k*gf*255 + k*bf*255 = 2^24 - 1 |
| * |
| * The new calculated coefficients are: |
| * rf = 19672 |
| * gf = 38620 |
| * bf = 7500 |
| * |
| * Thus the new equation would be: |
| * gray = (((19672*r) + (38620*g) + (7500*b) + 128) / 255) |
| * but it has been tweaked so the faster "divide by 256" can be performed and |
| * the "add 128" can be removed. Therefore, the resultant formula is optimal: |
| * gray = (((19672*r) + (38621*g) + (7500*b)) / 256) |
| */ |
| #define ComposeUshortGrayFrom3ByteRgb(r, g, b) \ |
| (UshortGrayPixelType)(((19672*(r)) + (38621*(g)) + (7500*(b))) / 256) |
| |
| #define UshortGrayPixelFromArgb(pixel, rgb, pRasInfo) \ |
| do { \ |
| int r, g, b; \ |
| ExtractIntDcmComponentsX123(rgb, r, g, b); \ |
| (pixel) = ComposeUshortGrayFrom3ByteRgb(r, g, b); \ |
| } while (0) |
| |
| #define StoreUshortGrayPixel(pRas, x, pixel) \ |
| ((pRas)[x] = (jushort) (pixel)) |
| |
| #define StoreUshortGrayPixelData(pPix, x, pixel, PREFIX) \ |
| StoreUshortGrayPixel(pPix, x, pixel) |
| |
| |
| #define LoadUshortGrayTo1IntRgb(pRas, PREFIX, x, rgb) \ |
| do { \ |
| int gray = (pRas)[x] >> 8; \ |
| (rgb) = (((gray << 8) | gray) << 8) | gray; \ |
| } while (0) |
| |
| #define LoadUshortGrayTo1IntArgb(pRas, PREFIX, x, argb) \ |
| do { \ |
| int gray = (pRas)[x] >> 8; \ |
| (argb) = (((((0xff << 8) | gray) << 8) | gray) << 8) | gray; \ |
| } while (0) |
| |
| #define LoadUshortGrayTo3ByteRgb(pRas, PREFIX, x, r, g, b) \ |
| ((r) = (g) = (b) = ((pRas)[x] >> 8)) |
| |
| #define LoadUshortGrayTo4ByteArgb(pRas, PREFIX, x, a, r, g, b) \ |
| do { \ |
| LoadUshortGrayTo3ByteRgb(pRas, PREFIX, x, r, g, b); \ |
| (a) = 0xff; \ |
| } while (0) |
| |
| #define LoadUshortGrayTo1ByteGray(pRas, PREFIX, x, gray) \ |
| (gray) = ((pRas)[x] >> 8) |
| |
| #define LoadUshortGrayTo1ShortGray(pRas, PREFIX, x, gray) \ |
| (gray) = (pRas)[x] |
| |
| #define StoreUshortGrayFrom1IntRgb(pRas, PREFIX, x, rgb) \ |
| do { \ |
| int r, g, b; \ |
| ExtractIntDcmComponentsX123(rgb, r, g, b); \ |
| StoreUshortGrayFrom3ByteRgb(pRas, PREFIX, x, r, g, b); \ |
| } while (0) |
| |
| #define StoreUshortGrayFrom1IntArgb(pRas, PREFIX, x, argb) \ |
| StoreUshortGrayFrom1IntRgb(pRas, PREFIX, x, argb) |
| |
| #define StoreUshortGrayFrom3ByteRgb(pRas, PREFIX, x, r, g, b) \ |
| (pRas)[x] = ComposeUshortGrayFrom3ByteRgb(r, g, b) |
| |
| #define StoreUshortGrayFrom4ByteArgb(pRas, PREFIX, x, a, r, g, b) \ |
| StoreUshortGrayFrom3ByteRgb(pRas, PREFIX, x, r, g, b) |
| |
| #define StoreUshortGrayFrom1ByteGray(pRas, PREFIX, x, gray) \ |
| (pRas)[x] = (jushort) (((gray) << 8) + (gray)) |
| |
| #define StoreUshortGrayFrom1ShortGray(pRas, PREFIX, x, gray) \ |
| StoreUshortGrayPixel(pRas, x, gray) |
| |
| |
| #define DeclareUshortGrayAlphaLoadData(PREFIX) |
| #define InitUshortGrayAlphaLoadData(PREFIX, pRasInfo) |
| |
| #define LoadAlphaFromUshortGrayFor1ShortGray(pRas, PREFIX, COMP_PREFIX) \ |
| COMP_PREFIX ## A = 0xffff |
| |
| #define Postload1ShortGrayFromUshortGray(pRas, PREFIX, COMP_PREFIX) \ |
| COMP_PREFIX ## G = (pRas)[0] |
| |
| |
| #define UshortGrayIsPremultiplied 0 |
| |
| #define DeclareUshortGrayBlendFillVars(PREFIX) \ |
| jushort PREFIX; |
| |
| #define ClearUshortGrayBlendFillVars(PREFIX, argb) \ |
| PREFIX = 0 |
| |
| #define InitUshortGrayBlendFillVarsNonPre(PREFIX, argb, COMP_PREFIX) \ |
| PREFIX = (jushort) COMP_PREFIX ## G |
| |
| #define InitUshortGrayBlendFillVarsPre(PREFIX, argb, COMP_PREFIX) |
| |
| #define StoreUshortGrayBlendFill(pRas, PREFIX, x, argb, COMP_PREFIX) \ |
| (pRas)[x] = PREFIX |
| |
| #define StoreUshortGrayFrom1ShortGrayComps(pRas, PREFIX, x, COMP_PREFIX) \ |
| StoreUshortGrayPixel(pRas, x, COMP_PREFIX ## G) |
| |
| #endif /* UshortGray_h_Included */ |