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StartOptimizedLoad() Method

Summary

Start optimized page loading for the same source image file or document in this RasterCodecs object.

Syntax
C#
C++/CLI
Python
public void StartOptimizedLoad() 
public:  
   void StartOptimizedLoad() 
def StartOptimizedLoad(self): 
Remarks

Optimizes getting information, loading or conversion from a file with multiple pages. Call this method before a loop that involves loading from the same source file or stream. Call StopOptimizedLoad when finished.

This method should be used only if the source file is the same and its contents is unchanged.

This method can greatly speed up a loop involving multiple GetInformation, GetInformationAsync, Load, LoadAsync, or Convert) methods for certain formats (for example, TXT, DOCX, and PDF files).

For more information, refer to Using the OptimizedLoad Functions to Speed Loading Large Files.

Example
C#
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing; 
using Leadtools.ImageProcessing.Color; 
using Leadtools.Svg; 
 
 
public void OptimizedLoadExample() 
{ 
   using (RasterCodecs codecs = new RasterCodecs()) 
   { 
      // The speed improvement is most noticeable in source files with many pages 
      string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, @"Forms\Unstructured", "W4.pdf"); 
 
      // indicate the start of a loop from the same source file 
      codecs.StartOptimizedLoad(); 
 
      for (int i = 1; i < 5; i++) 
      { 
         using (RasterImage image = codecs.Load(srcFileName, i)) 
         { 
            string destFileName = Path.Combine(LEAD_VARS.ImagesDir, "out_" + i.ToString() + ".jpg"); 
            // Save as the destination image 
            codecs.Save(image, destFileName, RasterImageFormat.Jpeg411, 24); 
         } 
      } 
 
      // Indicate that I finished using the same source file. 
      codecs.StopOptimizedLoad(); 
   } 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images"; 
} 
Requirements

Target Platforms

Help Version 22.0.2023.5.5
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Leadtools.Codecs Assembly

Products | Support | Contact Us | Intellectual Property Notices
© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.