package org.jaudiotagger.audio.asf.io;

 import org.jaudiotagger.audio.asf.data.GUID;

 import java.io.IOException;

 import java.io.InputStream;

 import java.io.OutputStream;

 /**

  * Reads an ASF chunk and writes a modified copy.<br> 

  * 

  * @author Christian Laireiter

  */

 public interface ChunkModifier

 {

     /**

      * Determines, whether the modifier handles chunks identified by given <code>guid</code>.

      * 

      * @param guid GUID to test.

      * @return <code>true</code>, if this modifier can be used to modify the chunk.

      */

     public boolean isApplicable(GUID guid);

     /**

      * Writes a modified copy of the chunk into the <code>destination.</code>.<br>

      * 

      * @param guid GUID of the chunk to modify.

      * @param source a stream providing the chunk, starting at the chunks length field.

      * @param destination destination for the modified chunk.

      * @return the differences between source and destination.

      * @throws IOException on I/O errors.

      */

     public ModificationResult modify(GUID guid, InputStream source, OutputStream destination) throws IOException;

 }