Multithreaded Property

Summary

Enables or disables multithreaded load.

Syntax

C++/CLI

Java

Python

public bool Multithreaded {get; set;}

public boolean getMultithreaded() 
public void setMultithreaded(boolean value)

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

Multithreaded # get and set (CodecsJpegLoadOptions)

Property Value

Value	Description
true	To use multithreaded load. The default value is true.
false	To disable multithreaded load. false is the default value.

Remarks

Set this property to true to use multiple threads for loading JPEG and LEAD CMP files.

The default value is false (multithreaded load is disabled).

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

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Help Version 23.0.2024.2.29

Leadtools.Codecs Assembly

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