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
6 * under the terms of the GNU General Public License version 2 only, as
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.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26/*
27 * This file contains the skeleton code for generating functions to
28 * convert image data for the Java AWT.  Nearly everything below is
29 * a call to a macro that is defined in one of the header files
30 * included in this directory.  A description of the various macro
31 * packages available for customizing this skeleton and how to use
32 * this file to construct specific conversion functions is available
33 * in the README file that should also be included in this directory.
34 */
35
36ImgConvertFcn NAME;
37
38int NAME(struct Hjava_awt_image_ColorModel *colormodel,
39         int srcOX, int srcOY, int srcW, int srcH,
40         void *srcpix, int srcOff, int srcBPP, int srcScan,
41         int srcTotalWidth, int srcTotalHeight,
42         int dstTotalWidth, int dstTotalHeight,
43         ImgConvertData *cvdata, ImgColorData *clrdata)
44{
45    DeclareScaleVars
46    DeclareInputVars
47    DeclareDecodeVars
48    DeclareAlphaVars
49    DeclareDitherVars
50    DeclareOutputVars
51    unsigned int pixel;
52    int red, green, blue;
53    IfAlpha(int alpha;)
54
55    InitInput(srcBPP);
56    InitScale(srcpix, srcOff, srcScan,
57              srcOX, srcOY, srcW, srcH,
58              srcTotalWidth, srcTotalHeight,
59              dstTotalWidth, dstTotalHeight);
60    InitOutput(cvdata, clrdata, DSTX1, DSTY1);
61    InitAlpha(cvdata, DSTY1, DSTX1, DSTX2);
62
63    InitPixelDecode(colormodel);
64    InitDither(cvdata, clrdata, dstTotalWidth);
65
66    RowLoop(srcOY) {
67        RowSetup(srcTotalHeight, dstTotalHeight,
68                 srcTotalWidth, dstTotalWidth,
69                 srcOY, srcpix, srcOff, srcScan);
70        StartDitherLine(cvdata, DSTX1, DSTY);
71        StartAlphaRow(cvdata, DSTX1, DSTY);
72        ColLoop(srcOX) {
73            ColSetup(srcTotalWidth, dstTotalWidth, pixel);
74            PixelDecode(colormodel, pixel, red, green, blue, alpha);
75            ApplyAlpha(cvdata, DSTX, DSTY, alpha);
76            DitherPixel(DSTX, DSTY, pixel, red, green, blue);
77            PutPixelInc(pixel, red, green, blue);
78        }
79        EndMaskLine();
80        EndOutputRow(cvdata, DSTY, DSTX1, DSTX2);
81        RowEnd(srcTotalHeight, dstTotalHeight, srcW, srcScan);
82    }
83    DitherBufComplete(cvdata, DSTX1);
84    BufComplete(cvdata, DSTX1, DSTY1, DSTX2, DSTY2);
85    return SCALESUCCESS;
86}
87