| 0,0 → 1,46 |
|---|
| /* |
| * This is public domain software - that is, you can do whatever you want |
| * with it, and include it software that is licensed under the GNU or the |
| * BSD license, or whatever other licence you choose, including proprietary |
| * closed source licenses. I do ask that you leave this header in tact. |
| * |
| * If you make modifications to this code that you think would benefit the |
| * wider community, please send me a copy and I'll post it on my site. |
| * |
| * If you make use of this code, I'd appreciate hearing about it. |
| * drew@drewnoakes.com |
| * Latest version of this software kept at |
| * http://drewnoakes.com/ |
| */ |
| package com.drew.metadata; |
| |
| import java.io.Serializable; |
| |
| /** |
| * Abstract base class for all tag descriptor classes. Implementations are responsible for |
| * providing the human-readable string represenation of tag values stored in a directory. |
| * The directory is provided to the tag descriptor via its constructor. |
| */ |
| public abstract class TagDescriptor implements Serializable |
| { |
| protected final Directory _directory; |
| |
| public TagDescriptor(Directory directory) |
| { |
| _directory = directory; |
| } |
| |
| /** |
| * Returns a descriptive value of the the specified tag for this image. |
| * Where possible, known values will be substituted here in place of the raw |
| * tokens actually kept in the Exif segment. If no substitution is |
| * available, the value provided by getString(int) will be returned. |
| * <p> |
| * This and getString(int) are the only 'get' methods that won't throw an |
| * exception. |
| * @param tagType the tag to find a description for |
| * @return a description of the image's value for the specified tag, or |
| * <code>null</code> if the tag hasn't been defined. |
| */ |
| public abstract String getDescription(int tagType) throws MetadataException; |
| } |