1 /*
 2  * Copyright (c) 2024, 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
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24  */
25 package hat.buffer;
26 
27 import java.awt.image.BufferedImage;
28 import java.awt.image.DataBuffer;
29 import java.awt.image.DataBufferByte;
30 import java.awt.image.DataBufferInt;
31 import java.awt.image.DataBufferUShort;
32 import java.lang.foreign.MemorySegment;
33 
34 import static java.lang.foreign.ValueLayout.JAVA_BYTE;
35 import static java.lang.foreign.ValueLayout.JAVA_INT;
36 import static java.lang.foreign.ValueLayout.JAVA_SHORT;
37 
38 public interface ImageIfaceBuffer<T extends ImageIfaceBuffer<?>> extends Buffer {
39     @SuppressWarnings("unchecked")
40     default T syncFromRasterDataBuffer(DataBuffer dataBuffer) { // int[], byte[], short[]
41         switch (dataBuffer) {
42             case DataBufferInt arr ->
43                     MemorySegment.copy(arr.getData(), 0, Buffer.getMemorySegment(this), JAVA_INT, 16L, arr.getData().length);
44             case DataBufferByte arr ->
45                     MemorySegment.copy(arr.getData(), 0, Buffer.getMemorySegment(this), JAVA_BYTE, 16L, arr.getData().length);
46             case DataBufferUShort arr ->
47                     MemorySegment.copy(arr.getData(), 0, Buffer.getMemorySegment(this), JAVA_SHORT, 16L, arr.getData().length);
48             default -> throw new IllegalStateException("Unexpected value: " + dataBuffer);
49         }
50         return (T)this;
51     }
52 
53     default T syncFromRaster(BufferedImage bufferedImage) { // int[], byte[], short[]
54         return syncFromRasterDataBuffer(bufferedImage.getRaster().getDataBuffer());
55     }
56 
57     @SuppressWarnings("unchecked")
58     default T syncToRasterDataBuffer(DataBuffer dataBuffer) { // int[], byte[], short[]
59         switch (dataBuffer) {
60             case DataBufferUShort arr ->
61                     MemorySegment.copy(Buffer.getMemorySegment(this), JAVA_SHORT, 16L, arr.getData(), 0, arr.getData().length);
62             case DataBufferInt arr ->
63                     MemorySegment.copy(Buffer.getMemorySegment(this), JAVA_INT, 16L, arr.getData(), 0, arr.getData().length);
64             case DataBufferByte arr ->
65                     MemorySegment.copy(Buffer.getMemorySegment(this), JAVA_BYTE, 16L, arr.getData(), 0, arr.getData().length);
66             default -> throw new IllegalStateException("Unexpected value: " + dataBuffer);
67         }
68         return (T) this;
69     }
70 
71     default T syncToRaster(BufferedImage bufferedImage) { // int[], byte[], short[]
72         return syncToRasterDataBuffer(bufferedImage.getRaster().getDataBuffer());
73     }
74 }