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1
7
8 package com.sun.imageio.plugins.jpeg;
9
10 import javax.imageio.IIOException  ;
11 import javax.imageio.metadata.IIOInvalidTreeException ;
12 import javax.imageio.metadata.IIOMetadataNode ;
13 import javax.imageio.stream.ImageOutputStream ;
14
15 import java.io.IOException ;
16
17 import org.w3c.dom.Node ;
18 import org.w3c.dom.NamedNodeMap ;
19
20
23 class AdobeMarkerSegment extends MarkerSegment {
24 int version;
25 int flags0;
26 int flags1;
27 int transform;
28 private static final int ID_SIZE = 5;
29
30 AdobeMarkerSegment(int transform) {
31 super(JPEG.APP14);
32 version = 101;
33 flags0 = 0;
34 flags1 = 0;
35 this.transform = transform;
36 }
37
38 AdobeMarkerSegment(JPEGBuffer buffer) throws IOException {
39 super(buffer);
40 buffer.bufPtr += ID_SIZE; version = (buffer.buf[buffer.bufPtr++] & 0xff) << 8;
42 version |= buffer.buf[buffer.bufPtr++] & 0xff;
43 flags0 = (buffer.buf[buffer.bufPtr++] & 0xff) << 8;
44 flags0 |= buffer.buf[buffer.bufPtr++] & 0xff;
45 flags1 = (buffer.buf[buffer.bufPtr++] & 0xff) << 8;
46 flags1 |= buffer.buf[buffer.bufPtr++] & 0xff;
47 transform = buffer.buf[buffer.bufPtr++] & 0xff;
48 buffer.bufAvail -= length;
49 }
50
51 AdobeMarkerSegment(Node node) throws IIOInvalidTreeException {
52 this(0); updateFromNativeNode(node, true);
54 }
55
56 IIOMetadataNode getNativeNode() {
57 IIOMetadataNode node = new IIOMetadataNode ("app14Adobe");
58 node.setAttribute("version", Integer.toString(version));
59 node.setAttribute("flags0", Integer.toString(flags0));
60 node.setAttribute("flags1", Integer.toString(flags1));
61 node.setAttribute("transform", Integer.toString(transform));
62
63 return node;
64 }
65
66 void updateFromNativeNode(Node node, boolean fromScratch)
67 throws IIOInvalidTreeException {
68 NamedNodeMap attrs = node.getAttributes();
70 transform = getAttributeValue(node, attrs, "transform", 0, 2, true);
71 int count = attrs.getLength();
72 if (count > 4) {
73 throw new IIOInvalidTreeException
74 ("Adobe APP14 node cannot have > 4 attributes", node);
75 }
76 if (count > 1) {
77 int value = getAttributeValue(node, attrs, "version",
78 100, 255, false);
79 version = (value != -1) ? value : version;
80 value = getAttributeValue(node, attrs, "flags0", 0, 65535, false);
81 flags0 = (value != -1) ? value : flags0;
82 value = getAttributeValue(node, attrs, "flags1", 0, 65535, false);
83 flags1 = (value != -1) ? value : flags1;
84 }
85 }
86
87
91 void write(ImageOutputStream ios) throws IOException {
92 length = 14;
93 writeTag(ios);
94 byte [] id = {0x41, 0x64, 0x6F, 0x62, 0x65};
95 ios.write(id);
96 write2bytes(ios, version);
97 write2bytes(ios, flags0);
98 write2bytes(ios, flags1);
99 ios.write(transform);
100 }
101
102 static void writeAdobeSegment(ImageOutputStream ios, int transform)
103 throws IOException {
104 (new AdobeMarkerSegment(transform)).write(ios);
105 }
106
107 void print () {
108 printTag("Adobe APP14");
109 System.out.print("Version: ");
110 System.out.println(version);
111 System.out.print("Flags0: 0x");
112 System.out.println(Integer.toHexString(flags0));
113 System.out.print("Flags1: 0x");
114 System.out.println(Integer.toHexString(flags1));
115 System.out.print("Transform: ");
116 System.out.println(transform);
117 }
118 }
119
120 |
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