/* Copyright (C) 2005-2011 Fabio Riccardi */
package com.lightcrafts.image.types;
import java.io.IOException;
import java.awt.image.RenderedImage;
import com.lightcrafts.image.BadImageFileException;
import com.lightcrafts.image.ImageInfo;
import com.lightcrafts.image.metadata.*;
import com.lightcrafts.image.metadata.makernotes.PentaxDirectory;
import com.lightcrafts.image.UnknownImageTypeException;
import static com.lightcrafts.image.metadata.makernotes.PentaxTags.*;
/**
* A <code>PEFImageType</code> is-a {@link RawImageType} for PEF (PEntax raw
* Format) images.
*
* @author Paul J. Lucas [paul@lightcrafts.com]
*/
public final class PEFImageType extends RawImageType {
////////// public /////////////////////////////////////////////////////////
/** The singleton instance of <code>PEFImageType</code>. */
public static final PEFImageType INSTANCE = new PEFImageType();
/**
* {@inheritDoc}
*/
public String[] getExtensions() {
return EXTENSIONS;
}
/**
* {@inheritDoc}
*/
public String getName() {
return "PEF";
}
/**
* {@inheritDoc}
*/
public RenderedImage getPreviewImage( ImageInfo imageInfo, int maxWidth,
int maxHeight )
throws BadImageFileException, IOException, UnknownImageTypeException
{
if (!USE_EMBEDDED_PREVIEW)
return super.getPreviewImage(imageInfo, maxWidth, maxHeight);
final ImageMetadata metadata = imageInfo.getMetadata();
final ImageMetadataDirectory dir =
metadata.getDirectoryFor( PentaxDirectory.class );
if ( dir != null ) {
// TODO: verify that this is actually an sRGB image, what about Adobe RGB shooting, etc.?
final RenderedImage image = JPEGImageType.getImageFromBuffer(
imageInfo.getByteBuffer(),
dir.getValue( PENTAX_PREVIEW_IMAGE_START ), 0,
dir.getValue( PENTAX_PREVIEW_IMAGE_LENGTH ),
maxWidth, maxHeight
);
if ( image != null )
return image;
}
return super.getPreviewImage( imageInfo, maxWidth, maxHeight );
}
public boolean hasFastPreview() {
return true;
}
/**
* {@inheritDoc}
*/
public void readMetadata( ImageInfo imageInfo )
throws BadImageFileException, IOException
{
final ImageMetadataReader reader = new TIFFMetadataReader( imageInfo );
MetadataUtil.removePreviewMetadataFrom( reader.readMetadata() );
}
////////// private ////////////////////////////////////////////////////////
/**
* Construct a <code>PEFImageType</code>.
* The constructor is <code>private</code> so only the singleton instance
* can be constructed.
*/
private PEFImageType() {
// do nothing
}
/**
* All the possible filename extensions for PEF files. All must be lower
* case and the preferred one must be first.
*/
private static final String EXTENSIONS[] = {
"pef"
};
}
/* vim:set et sw=4 ts=4: */