1 | /*
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2 | * Copyright 2002-2015 Drew Noakes
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3 | *
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4 | * Licensed under the Apache License, Version 2.0 (the "License");
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5 | * you may not use this file except in compliance with the License.
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6 | * You may obtain a copy of the License at
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7 | *
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8 | * http://www.apache.org/licenses/LICENSE-2.0
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9 | *
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10 | * Unless required by applicable law or agreed to in writing, software
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11 | * distributed under the License is distributed on an "AS IS" BASIS,
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12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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13 | * See the License for the specific language governing permissions and
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14 | * limitations under the License.
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15 | *
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16 | * More information about this project is available at:
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17 | *
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18 | * https://drewnoakes.com/code/exif/
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19 | * https://github.com/drewnoakes/metadata-extractor
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20 | */
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21 | package com.drew.metadata.exif;
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22 |
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23 | import com.drew.lang.annotations.NotNull;
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24 | import com.drew.lang.annotations.Nullable;
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25 | import com.drew.metadata.TagDescriptor;
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26 |
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27 | import static com.drew.metadata.exif.ExifInteropDirectory.*;
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28 |
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29 | /**
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30 | * Provides human-readable string representations of tag values stored in a {@link ExifInteropDirectory}.
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31 | *
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32 | * @author Drew Noakes https://drewnoakes.com
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33 | */
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34 | public class ExifInteropDescriptor extends TagDescriptor<ExifInteropDirectory>
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35 | {
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36 | public ExifInteropDescriptor(@NotNull ExifInteropDirectory directory)
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37 | {
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38 | super(directory);
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39 | }
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40 |
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41 | @Override
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42 | @Nullable
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43 | public String getDescription(int tagType)
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44 | {
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45 | switch (tagType) {
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46 | case TAG_INTEROP_INDEX:
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47 | return getInteropIndexDescription();
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48 | case TAG_INTEROP_VERSION:
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49 | return getInteropVersionDescription();
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50 | default:
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51 | return super.getDescription(tagType);
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52 | }
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53 | }
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54 |
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55 | @Nullable
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56 | public String getInteropVersionDescription()
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57 | {
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58 | return getVersionBytesDescription(TAG_INTEROP_VERSION, 2);
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59 | }
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60 |
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61 | @Nullable
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62 | public String getInteropIndexDescription()
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63 | {
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64 | String value = _directory.getString(TAG_INTEROP_INDEX);
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65 |
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66 | if (value == null)
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67 | return null;
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68 |
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69 | return "R98".equalsIgnoreCase(value.trim())
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70 | ? "Recommended Exif Interoperability Rules (ExifR98)"
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71 | : "Unknown (" + value + ")";
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72 | }
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73 | }
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