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
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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.
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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 pixels into an array
31  * such that the pixel for (srcX, srcY) is stored at index
32  * (srcOff + srcY * srcScan + srcX) in the array.
33  */
34 
35 #define DeclareOutputVars                               \
36     pixptr dstP;
37 
38 #define InitOutput(cvdata, clrdata, dstX, dstY)                 \
39     do {                                                        \
40         img_check(clrdata->bitsperpixel == 8);                  \
41         dstP.vp = cvdata->outbuf;                               \
42         dstP.bp += dstY * ScanBytes(cvdata) + dstX;             \
43     } while (0)
44 
45 #define PutPixelInc(pixel, red, green, blue)                    \
46     *dstP.bp++ = ((unsigned char) pixel)
47 
48 #define EndOutputRow(cvdata, dstY, dstX1, dstX2)                \
49     do {                                                        \
50         SendRow(cvdata, dstY, dstX1, dstX2);                    \
51         dstP.bp += ScanBytes(cvdata) - (dstX2 - dstX1);         \
52     } while (0)
53 
54 #define EndOutputRect(cvdata, dstX1, dstY1, dstX2, dstY2)       \
55     SendBuffer(cvdata, dstX1, dstY1, dstX2, dstY2)
56