//---------------------------------------------------------------------------------------
// Copyright (c) 2001-2012 by PDFTron Systems Inc. All Rights Reserved.
// Consult legal.txt regarding legal and license information.
//---------------------------------------------------------------------------------------

import pdftron.PDF.*;
import pdftron.SDF.SDFDoc;


public class OptimizerTest 
{
	//---------------------------------------------------------------------------------------
	// The following sample illustrates how to reduce PDF file size using the 
	// Optimizer class. 
	// 
	// 'pdftron.PDF.Optimizer' is an optional PDFNet Add-On utility class that can be 
	// used to optimize PDF documents by reducing the file size, removing redundant 
	// information, and compressing data streams using the latest in image compression 
	// technology. PDF Optimizer can compress and shrink PDF file size with the 
	// following operations:
	// - Remove duplicated fonts, images, ICC profiles, and any other data stream. 
	// - Optionally convert high-quality or print-ready PDF files to small, efficient and web-ready PDF. 
	// - Optionally down-sample large images to a given resolution. 
	// - Optionally compress or recompress PDF images using JBIG2 and JPEG2000 compression formats. 
	// - Compress uncompressed streams and remove unused PDF objects. 
	//---------------------------------------------------------------------------------------
	public static void main(String[] args)
	{		
		String input_path = "../../TestFiles/";
		String output_path = "../../TestFiles/Output/";
		String input_filename = "newsletter";	

		PDFNet.initialize();

		//--------------------------------------------------------------------------------
		// Example 1) Optimize a PDF. 
		try
		{
			PDFDoc doc = new PDFDoc(input_path + input_filename + ".pdf");			
			doc.initSecurityHandler();			
			Optimizer.optimize(doc);
			doc.save(output_path + input_filename + "_opt1.pdf", SDFDoc.e_linearized, null);			
		}
		catch (Exception e)
		{
			e.printStackTrace();
			return;
		}		

		//--------------------------------------------------------------------------------
		// Example 2) Reduce image quality and use jpeg compression for
		// non monochrome images.
		try
		{
			PDFDoc doc = new PDFDoc(input_path + input_filename + ".pdf");			
			doc.initSecurityHandler();	
			
			Optimizer.ImageSettings image_settings = new Optimizer.ImageSettings();;
	
			// low quality jpeg compression
			image_settings.setCompressionMode(Optimizer.ImageSettings.e_jpeg);
			image_settings.setQuality(1);
	
			// Set the output dpi to be standard screen resolution
			image_settings.setImageDPI(144,96);
	
			// this option will recompress images not compressed with
			// jpeg compression and use the result if the new image
			// is smaller.
			image_settings.forceRecompression(true);


			// this option is not commonly used since it can 
			// potentially lead to larger files.  It should be enabled
			// only if the output compression specified should be applied
			// to every image of a given type regardless of the output image size
			//image_settings.forceChanges(true);
			
			Optimizer.OptimizerSettings opt_settings = new Optimizer.OptimizerSettings();
			opt_settings.setColorImageSettings(image_settings);
			opt_settings.setGrayscaleImageSettings(image_settings);
			
	
			
			Optimizer.optimize(doc, opt_settings);

			doc.save(output_path + input_filename + "_opt2.pdf", SDFDoc.e_linearized, null);			
		}
		catch (Exception e)
		{
			e.printStackTrace();
			return;
		}
		
		//--------------------------------------------------------------------------------
		// Example 3) Use monochrome image settings and default settings
		// for color and grayscale images. 
		try
		{
			PDFDoc doc = new PDFDoc(input_path + input_filename + ".pdf");			
			doc.initSecurityHandler();			
			
			Optimizer.MonoImageSettings mono_image_settings = new Optimizer.MonoImageSettings();
			mono_image_settings.setCompressionMode(Optimizer.MonoImageSettings.e_jbig2);
			mono_image_settings.forceRecompression(true);
			Optimizer.OptimizerSettings opt_settings = new Optimizer.OptimizerSettings();
			opt_settings.setMonoImageSettings(mono_image_settings);
			
			Optimizer.optimize(doc, opt_settings);

			doc.save(output_path + input_filename + "_opt3.pdf", SDFDoc.e_linearized, null);			
		}
		catch (Exception e)
		{
			e.printStackTrace();
			return;
		}				

		PDFNet.terminate();		
	}
}