package com.qoppa.mule;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;

import org.mule.api.MuleMessage;
import org.mule.api.transformer.TransformerException;
import org.mule.transformer.AbstractMessageTransformer;

import com.qoppa.pdf.PDFException;
import com.qoppa.pdf.TIFFOptions;
import com.qoppa.pdfImages.PDFImages;

public class PDFToTIFF extends AbstractMessageTransformer
{
	private final int DPI = 150;

	@Override
	public Object transformMessage(MuleMessage message, String outputEncoding) throws TransformerException 
	{
		// Get the input stream
		InputStream inStream = (InputStream)message.getPayload();

		try
		{
			// Load the PDF
			PDFImages pdf = new PDFImages(inStream, null);
			
			// Convert to TIFF
			ByteArrayOutputStream outStream = new ByteArrayOutputStream();
			pdf.saveDocumentAsTIFF(outStream, new TIFFOptions(DPI, TIFFOptions.TIFF_PACKBITS));
			
			// Return the TIFF in a byte array
			return outStream.toByteArray();
		}
		catch (PDFException pdfE)
		{
			throw new TransformerException(this, pdfE);
		}
		catch (IOException ioe)
		{
			throw new TransformerException(this, ioe);	
		}
		finally
		{
			try {
				inStream.close();
			} 
			catch(Throwable t) {}
		}
	}
	
}