PreloadCodecsList Property

Summary

Gets the current preload codecs list.

Syntax

C++/CLI

Java

Python

public string PreloadCodecsList { get; }

public String getPreloadCodecsList()

public: 
property String^ PreloadCodecsList { 
   String^ get(); 
}

PreloadCodecsList # get  (RasterCodecs)

Property Value

The current preload codecs list. The default value is FAX,CMP,TIF,PNG,BMP.

Remarks

Use this property before calling PreloadCodecs if you wish to get the current setting for the preload codecs list before changing it.

The preload codecs list contains the list of fixed and cached codecs.

The fixed codec count can be obtained from FixedPreloadCodecs.

The cached codec count can be obtained from CachedPreloadCodecs.

Example

Java

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing; 
using Leadtools.ImageProcessing.Color; 
using Leadtools.Svg; 
 
 
public void PreloadCodecsExample() 
{ 
   RasterCodecs codecs = new RasterCodecs(); 
 
   string srcFileName1 = Path.Combine(LEAD_VARS.ImagesDir, "Image1.j2k"); 
   string srcFileName2 = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp"); 
 
   // display the original values before changing them 
   Debug.WriteLine("PreloadCodecList - {0}", codecs.PreloadCodecsList); 
   Debug.WriteLine("FixedPreloadCodecs - {0}", codecs.FixedPreloadCodecs); 
   Debug.WriteLine("CachedPreloadCodecs - {0}", codecs.CachedPreloadCodecs); 
   Debug.WriteLine("IgnoreCodecList - {0}", codecs.IgnoreCodecsList); 
 
   // preload only the j2k filter and ignore the cmp filter 
   codecs.PreloadCodecs(1, 1, "j2k"); 
   codecs.IgnoreCodecs("cmp"); 
 
   // try to get info on a j2k image 
   CodecsImageInfo info = codecs.GetInformation(srcFileName1, false); 
   Debug.WriteLine("j2k - Width: {0}, Height {1}", info.Width, info.Height); 
 
   // try to get info on a cmp image 
   try 
   { 
      info = codecs.GetInformation(srcFileName2, false); 
   } 
   catch 
   { 
      Debug.WriteLine("GetInformation for cmp failed - sample success!"); 
   } 
 
   // Clean up 
   codecs.Dispose(); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
}

 
import java.io.*; 
import java.net.*; 
import java.nio.file.Paths; 
import java.util.*; 
import java.time.Instant; 
import java.time.Duration; 
 
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.codecs.RasterCodecs.FeedCallbackThunk; 
import leadtools.drawing.internal.*; 
import leadtools.imageprocessing.*; 
import leadtools.imageprocessing.color.ChangeIntensityCommand; 
import leadtools.svg.*; 
 
 
public void preloadCodecsExample() { 
   final String LEAD_VARS_IMAGES_DIR = "C:\\LEADTOOLS23\\Resources\\Images"; 
   RasterCodecs codecs = new RasterCodecs(); 
 
   String srcFileName1 = combine(LEAD_VARS_IMAGES_DIR, "Image1.j2k"); 
   String srcFileName2 = combine(LEAD_VARS_IMAGES_DIR, "Image1.cmp"); 
   String dstFileName1 = combine(LEAD_VARS_IMAGES_DIR, "Test1.j2k"); 
 
   // display the original values before changing them 
   System.out.println("PreloadCodecList - " + codecs.getPreloadCodecsList()); 
   System.out.println("FixedPreloadCodecs - " + codecs.getFixedPreloadCodecs()); 
   System.out.println("CachedPreloadCodecs - " + codecs.getCachedPreloadCodecs()); 
   System.out.println("IgnoreCodecList - " + codecs.getIgnoreCodecsList()); 
 
   // preload only the j2k filter and ignore the cmp filter 
   codecs.preloadCodecs(1, 1, "j2k"); 
   codecs.ignoreCodecs("cmp"); 
 
   // try to get info on a j2k image 
   CodecsImageInfo info = codecs.getInformation(srcFileName1, false); 
   System.out.println("j2k - Width: " + info.getWidth() + ", Height: " + info.getHeight()); 
 
   // try to get info on a cmp image 
   try { 
      info = codecs.getInformation(srcFileName2, false); 
   } catch (Exception e) { 
      System.out.println("GetInformation for cmp failed - sample success!"); 
   } 
 
   RasterImage image1 = codecs.load(srcFileName1); 
   codecs.save(image1, dstFileName1, RasterImageFormat.J2K, 0); 
   assertTrue("File unsuccessfully saved", (new File(dstFileName1)).exists()); 
   System.out.println("File successfully saved to: " + dstFileName1); 
 
   // Clean up 
   codecs.dispose(); 
}

Requirements

Target Platforms

Reference

Download our FREE evaluation

Help Version 23.0.2024.2.29

Leadtools.Codecs Assembly

Introduction

Getting Started

Namespaces

Leadtools.Codecs Namespace

Assemblies