CodecsCodecLoadMode Enumeration

Summary

The handling mode for a file codec.

Syntax

C++/CLI

Java

Python

public enum CodecsCodecLoadMode

public enum CodecsCodecLoadMode

public enum class CodecsCodecLoadMode

class CodecsCodecLoadMode(Enum): 
   Dynamic = 0 
   Fixed = 1 
   Ignored = 2

Members

Value	Member	Description
0	Dynamic	The codec is dynamically loaded and freed as necessary.
1	Fixed	The codec is loaded into memory and will never be unloaded. (This makes the file handling very fast).
2	Ignored	The codec is ignored. You cannot load, save or get the file information for any files normally handled by this codec.

Remarks

LEADTOOLS maintains a list of codecs used for querying for the file information.

Fixed codecs are never unloaded from the list. This makes the file detection of file formats very fast.

Dynamic codecs are dynamically unloaded when the number of loaded codecs exceeds the number set through RasterCodecs.PreloadCodecs.

Ignored codecs will never be used. You cannot load, save or obtain information on file formats normally handled by a codec that is ignored.

Once you save or load a file handled by a certain codec, that codec will be permanently loaded into memory. From that point on, setting the codecs load mode has no effect.

Example

Java

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing; 
using Leadtools.ImageProcessing.Color; 
using Leadtools.Svg; 
 
 
public void GetCodecInformationExample() 
{ 
   RasterCodecs codecs = new RasterCodecs(); 
 
   CodecsCodecInformation codecInfo = codecs.GetCodecInformation("Tif"); 
   Debug.WriteLine("CheckedByInformation : {0}", codecInfo.CheckedByInformation); 
   Debug.WriteLine("ExtensionList : {0}", codecInfo.ExtensionList); 
   Debug.WriteLine("IsIgnored : {0}", codecInfo.IsIgnored.ToString()); 
   Debug.WriteLine("IsPresent : {0}", codecInfo.IsPresent.ToString()); 
   Debug.WriteLine("IsSlowInformation : {0}", codecInfo.IsSlowInformation.ToString()); 
   Debug.WriteLine("LoadMode : {0}", codecInfo.LoadMode.ToString()); 
   Debug.WriteLine("Name : {0}", codecInfo.Name); 
 
   // Parse the load modes 
   CodecsCodecLoadMode[] loadModes = (CodecsCodecLoadMode[])Enum.GetValues(typeof(CodecsCodecLoadMode)); 
   foreach (var loadMode in loadModes) 
   { 
      codecs.SetCodecsInformation(codecs.GetCodecsInformation()); 
      Debug.WriteLine($"Load mode: {loadMode}"); 
   } 
 
   // change the extensions that the ptk filter tries to handle 
   codecInfo.ExtensionList = "ptk;ptoka;ptoca;ptca;ptka"; 
   codecs.SetCodecInformation(codecInfo); 
 
   // re-display the new settings 
   codecInfo = codecs.GetCodecInformation("tif"); 
   Debug.WriteLine("ExtensionList : {0}", codecInfo.ExtensionList); 
 
   // Clean up 
   codecs.Dispose(); 
}

 
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 getCodecInformationExample() { 
   RasterCodecs codecs = new RasterCodecs(); 
 
   CodecsCodecInformation codecInfo = codecs.getCodecInformation("Tif"); 
   System.out.println("CheckedByInformation : " + codecInfo.getCheckedByInformation()); 
   System.out.println("ExtensionList : %s" + codecInfo.getExtensionList()); 
   System.out.println("IsIgnored : %s" + codecInfo.isIgnored()); 
   System.out.println("IsPresent : %s" + codecInfo.isPresent()); 
   System.out.println("IsSlowInformation : %s" + codecInfo.isSlowInformation()); 
   System.out.println("LoadMode : %s" + codecInfo.getLoadMode().toString()); 
   System.out.println("Name : %s" + codecInfo.getName()); 
 
   // Parse the load modes 
   CodecsCodecLoadMode[] loadModes = CodecsCodecLoadMode.values(); 
   for (CodecsCodecLoadMode loadMode : loadModes) { 
      codecs.setCodecsInformation(codecs.getCodecsInformation()); 
      assertTrue("Codecs information unsuccessfully set (is null)", codecs.getCodecsInformation() != null); 
      System.out.println("Load mode: " + loadMode); 
   } 
 
   // change the extensions that the ptk filter tries to handle 
   codecInfo.setExtensionList("ptk;ptoka;ptoca;ptca;ptka"); 
   codecs.setCodecInformation(codecInfo); 
 
   // re-display the new settings 
   codecInfo = codecs.getCodecInformation("tif"); 
   System.out.println("ExtensionList : " + codecInfo.getExtensionList()); 
 
   // Clean up 
   codecs.dispose(); 
}

Requirements

Target Platforms

Reference

Leadtools.Codecs Namespace

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Help Version 23.0.2024.2.29

Leadtools.Codecs Assembly

Introduction

Getting Started

Namespaces

Leadtools.Codecs Namespace

Assemblies