| J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1996 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | /* |
| 27 | * This file contains macro definitions for the Storing category of |
| 28 | * the macros used by the generic scaleloop function. |
| 29 | * |
| 30 | * This implementation can store 8-bit, 16-bit, or 32-bit pixels into an |
| 31 | * array of bytes, shorts, or longs such that the pixel for (srcX, srcY) |
| 32 | * is stored at index (srcOff + srcY * srcScan + srcX) in the array. |
| 33 | */ |
| 34 | |
| 35 | #define DeclareOutputVars \ |
| 36 | pixptr dstP; \ |
| 37 | int dst32; |
| 38 | |
| 39 | #define InitOutput(cvdata, clrdata, dstX, dstY) \ |
| 40 | do { \ |
| 41 | switch (clrdata->bitsperpixel) { \ |
| 42 | case 8: dst32 = 0; break; \ |
| 43 | case 16: dst32 = 1; break; \ |
| 44 | case 32: dst32 = 2; break; \ |
| 45 | default: \ |
| 46 | SignalError(0, JAVAPKG "InternalError", \ |
| 47 | "unsupported screen depth"); \ |
| 48 | return SCALEFAILURE; \ |
| 49 | } \ |
| 50 | img_check((ScanBytes(cvdata) & ((1 << dst32)-1)) == 0); \ |
| 51 | dstP.vp = cvdata->outbuf; \ |
| 52 | dstP.bp += dstY * ScanBytes(cvdata) + (dstX << dst32); \ |
| 53 | } while (0) |
| 54 | |
| 55 | #define PutPixelInc(pixel, red, green, blue) \ |
| 56 | do { \ |
| 57 | switch (dst32) { \ |
| 58 | case 0: \ |
| 59 | *dstP.bp++ = ((unsigned char) pixel); \ |
| 60 | break; \ |
| 61 | case 1: \ |
| 62 | *dstP.sp++ = ((unsigned short) pixel); \ |
| 63 | break; \ |
| 64 | case 2: \ |
| 65 | *dstP.ip++ = pixel; \ |
| 66 | break; \ |
| 67 | } \ |
| 68 | } while (0) |
| 69 | |
| 70 | #define EndOutputRow(cvdata, dstY, dstX1, dstX2) \ |
| 71 | do { \ |
| 72 | SendRow(cvdata, dstY, dstX1, dstX2); \ |
| 73 | dstP.bp += (ScanBytes(cvdata) \ |
| 74 | - ((dstX2 - dstX1) << dst32)); \ |
| 75 | } while (0) |
| 76 | |
| 77 | #define EndOutputRect(cvdata, dstX1, dstY1, dstX2, dstY2) \ |
| 78 | SendBuffer(cvdata, dstX1, dstY1, dstX2, dstY2) |