UseBadJpegPredictor Property

Summary

Forces the loading of lossless JPEG files that contain incorrect predictors.

Syntax

Objective-C

C++/CLI

Java

Python

public bool UseBadJpegPredictor {get; set;}

@property (nonatomic, assign) BOOL useBadJpegPredictor;

public boolean getUseBadJpegPredictor() 
public void setUseBadJpegPredictor(boolean value)

public: 
property bool UseBadJpegPredictor { 
   bool get(); 
   void set (    bool ); 
}

UseBadJpegPredictor # get and set (CodecsJpegLoadOptions)

Property Value

Value	Description
true	To force the loading of lossless JPEG files that contain incorrect predictors.
false	To not force the loading of lossless JPEG files. The default value is false.

Example

Java

using Leadtools; 
using Leadtools.Codecs; 
 
using Leadtools.ImageProcessing.Core; 
using Leadtools.Pdf; 
 
public void CodecsJpegOptionsExample() 
{ 
   RasterCodecs codecs = new RasterCodecs(); 
 
   string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "cannon.jpg"); 
 
   // Get all Information about the Jpeg file that you want to load. 
   CodecsImageInfo imageInfo = codecs.GetInformation(srcFileName, true); 
 
   //Setting Jpeg Load options. CodecsJpegOptions & CodecsJpegLoadOptions reference 
   codecs.Options.Jpeg.Load.DisableMmx = false; 
   codecs.Options.Jpeg.Load.DisableP3 = false; 
   codecs.Options.Jpeg.Load.ForceCieLab = true; 
   codecs.Options.Jpeg.Load.ForceRgbFile = false; 
   codecs.Options.Jpeg.Load.IgnoreAdobeColorTransform = false; 
   codecs.Options.Jpeg.Load.UseBadJpegPredictor = false; 
   codecs.Options.Jpeg.Load.Multithreaded = true; 
   codecs.Options.Jpeg.Load.UseFastConversion = false; 
 
   RasterImage srcImage = codecs.Load(srcFileName); 
 
   //if the image has stamp then set the Jpeg settings related to the stamp. 
   if (imageInfo.Jpeg.HasStamp) 
   { 
      // Note, codecs.Options.Jpeg.Save.SaveWithoutTimestamp is deprecated. Use CodecsPngSaveOptions.SaveWithoutTimestamp instead. 
      // CodecsJpegSaveOptions reference 
      codecs.Options.Jpeg.Save.FixedPaletteStamp = true; 
      codecs.Options.Jpeg.Save.JpegStamp = true; 
      codecs.Options.Jpeg.Save.SaveWithStamp = true; 
      codecs.Options.Jpeg.Save.StampBitsPerPixel = srcImage.BitsPerPixel; 
      codecs.Options.Jpeg.Save.StampHeight = 100; 
      codecs.Options.Jpeg.Save.StampWidth = 100; 
      codecs.Options.Jpeg.Save.YccStamp = false; 
   } 
 
   if (imageInfo.Jpeg.IsLossless) 
      Debug.WriteLine("This is a lossless Jpeg Image"); 
   else 
      Debug.WriteLine("This is not a lossless Jpeg Image"); 
 
   if (imageInfo.Jpeg.IsProgressive) 
      codecs.Options.Jpeg.Save.Passes = 0; 
 
   codecs.Options.Jpeg.Save.CmpQualityFactorPredefined = CodecsCmpQualityFactorPredefined.Custom; 
   codecs.Options.Jpeg.Save.DisableMmx = true; 
   codecs.Options.Jpeg.Save.DisableP3 = true; 
   codecs.Options.Jpeg.Save.QualityFactor = 2; 
   codecs.Options.Jpeg.Save.SaveOldJtif = true; 
 
   codecs.Save(srcImage, Path.Combine(LEAD_VARS.ImagesDir, "jpeg1.jpg"), RasterImageFormat.Jpeg, srcImage.BitsPerPixel); 
 
   codecs.Options.Jpeg.Save.FixedPaletteStamp = false; 
   codecs.Options.Jpeg.Save.JpegStamp = true; 
   codecs.Options.Jpeg.Save.SaveWithStamp = true; 
   codecs.Options.Jpeg.Save.StampBitsPerPixel = srcImage.BitsPerPixel; 
   codecs.Options.Jpeg.Save.StampHeight = 75; 
   codecs.Options.Jpeg.Save.StampWidth = 50; 
   codecs.Options.Jpeg.Save.YccStamp = true; 
   codecs.Options.Jpeg.Save.CmpQualityFactorPredefined = CodecsCmpQualityFactorPredefined.MaximumQuality; 
   codecs.Options.Jpeg.Save.DisableMmx = false; 
   codecs.Options.Jpeg.Save.DisableP3 = false; 
   codecs.Options.Jpeg.Save.SaveOldJtif = false; 
 
   codecs.Save(srcImage, Path.Combine(LEAD_VARS.ImagesDir, "jpeg2.jpg"), RasterImageFormat.Jpeg, srcImage.BitsPerPixel); 
 
   // Clean up 
   srcImage.Dispose(); 
   codecs.Dispose(); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
}

 
import java.io.File; 
import java.io.IOException; 
import java.net.URI; 
import java.net.URISyntaxException; 
import java.nio.file.Paths; 
 
import org.junit.*; 
import org.junit.runner.JUnitCore; 
import org.junit.runner.Result; 
import org.junit.runner.notification.Failure; 
import static org.junit.Assert.*; 
 
import leadtools.*; 
import leadtools.codecs.*; 
import leadtools.imageprocessing.core.MinMaxBitsCommand; 
 
 
public void codecsJpegOptionsExample() { 
   final String LEAD_VARS_IMAGES_DIR = "C:\\LEADTOOLS23\\Resources\\Images"; 
   RasterCodecs codecs = new RasterCodecs(); 
   String srcFileName = combine(LEAD_VARS_IMAGES_DIR, "cannon.jpg"); 
 
   // Get all Information about the Jpeg file that you want to load. 
   CodecsImageInfo imageInfo = codecs.getInformation(srcFileName, true); 
 
   // Setting Jpeg Load options. CodecsJpegOptions & CodecsJpegLoadOptions 
   // reference 
   codecs.getOptions().getJpeg().getLoad().setDisableMmx(false); 
   codecs.getOptions().getJpeg().getLoad().setDisableP3(false); 
   codecs.getOptions().getJpeg().getLoad().setForceCieLab(true); 
   codecs.getOptions().getJpeg().getLoad().setForceRgbFile(false); 
   codecs.getOptions().getJpeg().getLoad().setIgnoreAdobeColorTransform(false); 
   codecs.getOptions().getJpeg().getLoad().setUseBadJpegPredictor(false); 
   codecs.getOptions().getJpeg().getLoad().setMultithreaded(true); 
   codecs.getOptions().getJpeg().getLoad().setUseFastConversion(false); 
   RasterImage srcImage = codecs.load(srcFileName); 
 
   // if the image has stamp then set the Jpeg settings related to the stamp. 
   if (imageInfo.getJpeg().hasStamp()) { 
      // Note, codecs.getOptions().Jpeg.Save.SaveWithoutTimestamp is deprecated. Use 
      // CodecsPngSaveOptions.SaveWithoutTimestamp instead. 
      // CodecsJpegSaveOptions reference 
      codecs.getOptions().getJpeg().getSave().setFixedPaletteStamp(true); 
      codecs.getOptions().getJpeg().getSave().setJpegStamp(true); 
      codecs.getOptions().getJpeg().getSave().setSaveWithStamp(true); 
      codecs.getOptions().getJpeg().getSave().setStampBitsPerPixel(srcImage.getBitsPerPixel()); 
      codecs.getOptions().getJpeg().getSave().setStampHeight(100); 
      codecs.getOptions().getJpeg().getSave().setStampWidth(100); 
      codecs.getOptions().getJpeg().getSave().setYccStamp(false); 
   } 
 
   if (imageInfo.getJpeg().isLossless()) 
      System.out.println("This is a lossless Jpeg Image"); 
   else 
      System.out.println("This is not a lossless Jpeg Image"); 
 
   if (imageInfo.getJpeg().isProgressive()) 
      codecs.getOptions().getJpeg().getSave().setPasses(0); 
   codecs.getOptions().getJpeg().getSave().setCmpQualityFactorPredefined(CodecsCmpQualityFactorPredefined.CUSTOM); 
   codecs.getOptions().getJpeg().getSave().setDisableMmx(true); 
   codecs.getOptions().getJpeg().getSave().setDisableP3(true); 
   codecs.getOptions().getJpeg().getSave().setQualityFactor(2); 
   codecs.getOptions().getJpeg().getSave().setSaveOldJtif(true); 
   codecs.save(srcImage, combine(LEAD_VARS_IMAGES_DIR, "jpeg1.jpg"), RasterImageFormat.JPEG, 
         srcImage.getBitsPerPixel()); 
   codecs.getOptions().getJpeg().getSave().setFixedPaletteStamp(false); 
   codecs.getOptions().getJpeg().getSave().setJpegStamp(true); 
   codecs.getOptions().getJpeg().getSave().setSaveWithStamp(true); 
   codecs.getOptions().getJpeg().getSave().setStampBitsPerPixel(srcImage.getBitsPerPixel()); 
   codecs.getOptions().getJpeg().getSave().setStampHeight(75); 
   codecs.getOptions().getJpeg().getSave().setStampWidth(50); 
   codecs.getOptions().getJpeg().getSave().setYccStamp(true); 
   codecs.getOptions().getJpeg().getSave() 
         .setCmpQualityFactorPredefined(CodecsCmpQualityFactorPredefined.MAXIMUM_QUALITY); 
   codecs.getOptions().getJpeg().getSave().setDisableMmx(false); 
   codecs.getOptions().getJpeg().getSave().setDisableP3(false); 
   codecs.getOptions().getJpeg().getSave().setSaveOldJtif(false); 
 
   String outputFileName = combine(LEAD_VARS_IMAGES_DIR, "jpeg2.jpg"); 
   codecs.save(srcImage, outputFileName, RasterImageFormat.JPEG, srcImage.getBitsPerPixel()); 
 
   assertTrue("File unsuccessfully saved to " + outputFileName, (new File(outputFileName)).exists()); 
   System.out.printf("File successfully saved to %s%n", outputFileName); 
 
   // Clean up 
   srcImage.dispose(); 
   codecs.dispose(); 
}

Requirements

Target Platforms

Reference

CodecsJpegLoadOptions Class

CodecsJpegLoadOptions Members

Compression Using LEAD and JPEG Formats

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Help Version 23.0.2024.2.29

Leadtools.Codecs Assembly

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Namespaces

Leadtools.Codecs Namespace

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