1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
/*
* Copyright 2002-2017 Drew Noakes
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* More information about this project is available at:
*
* https://drewnoakes.com/code/exif/
* https://github.com/drewnoakes/metadata-extractor
*/
package com.drew.metadata.jfxx;
import com.drew.lang.annotations.NotNull;
import com.drew.lang.annotations.Nullable;
import com.drew.metadata.TagDescriptor;
import static com.drew.metadata.jfxx.JfxxDirectory.*;
/**
* Provides human-readable string versions of the tags stored in a JfxxDirectory.
*
* <ul>
* <li>http://en.wikipedia.org/wiki/JPEG_File_Interchange_Format</li>
* <li>http://www.w3.org/Graphics/JPEG/jfif3.pdf</li>
* </ul>
*
* @author Drew Noakes
*/
@SuppressWarnings("WeakerAccess")
public class JfxxDescriptor extends TagDescriptor<JfxxDirectory>
{
public JfxxDescriptor(@NotNull JfxxDirectory directory)
{
super(directory);
}
@Override
@Nullable
public String getDescription(int tagType)
{
switch (tagType) {
case TAG_EXTENSION_CODE:
return getExtensionCodeDescription();
default:
return super.getDescription(tagType);
}
}
@Nullable
public String getExtensionCodeDescription()
{
Integer value = _directory.getInteger(TAG_EXTENSION_CODE);
if (value==null)
return null;
switch (value) {
case 0x10: return "Thumbnail coded using JPEG";
case 0x11: return "Thumbnail stored using 1 byte/pixel";
case 0x13: return "Thumbnail stored using 3 bytes/pixel";
default: return "Unknown extension code " + value;
}
}
}
|
