XMPChunk.java

/**
 * 
 */

package org.jhove2.module.format.wave;

import java.io.EOFException;
import java.io.IOException;
import org.jhove2.core.I8R;
import org.jhove2.core.JHOVE2;
import org.jhove2.core.JHOVE2Exception;
import org.jhove2.core.format.Format;
import org.jhove2.core.format.FormatIdentification;
import org.jhove2.core.format.FormatIdentification.Confidence;
import org.jhove2.core.io.Input;
import org.jhove2.core.source.ByteStreamSource;
import org.jhove2.core.source.Source;
import org.jhove2.module.format.riff.GenericChunk;

import com.sleepycat.persist.model.Persistent;

/** WAVE format Extensible Metadata Platform (XMP) chunk.
 * 
 * @author slabrams
 */
@Persistent
public class XMPChunk
    extends GenericChunk
{
    /** XML format. */
    protected Format xmlFormat;
     
    /** Instantiate a new <code>XMPChunk</code>.
     * @param xml XML format
     */
    public XMPChunk(Format xml) {
        this();
        
        this.xmlFormat = xml;
    }
    
    private XMPChunk(){
    	super();
    }
    
    /** 
     * Parse a WAVE chunk.
     * 
     * @param jhove2
     *            JHOVE2 framework
     * @param source
     *            WAVE source unit
     * @param input  WAVE source input
     * @return Number of bytes consumed
     * @throws EOFException
     *             If End-of-File is reached reading the source unit
     * @throws IOException
     *             If an I/O exception is raised reading the source unit
     * @throws JHOVE2Exception
     * @see org.jhove2.module.format.Parser#parse(org.jhove2.core.JHOVE2,
     *      org.jhove2.core.source.Source, org.jhove2.core.io.Input)
     */
    @Override
    public long parse(JHOVE2 jhove2, Source source, Input input)
        throws EOFException, IOException, JHOVE2Exception
    {
        long consumed = super.parse(jhove2, source, input);
        
        /* The chunk contents are in XML; invoke the XML module. */
        ByteStreamSource child =
            jhove2.getSourceFactory().getByteStreamSource(jhove2, source,
                                                          input.getPosition(),
                                                          this.size, ".xml");
        I8R xml = xmlFormat.getIdentifier();
        FormatIdentification id = new FormatIdentification(xml, Confidence.PositiveGeneric);
        child.addPresumptiveFormat(id);
        jhove2.characterize(child, input);
        consumed += this.size;
        
        return consumed;
    }
}