GetFormat(Stream) Method

Summary

Gets the format of the image in a stream.

Syntax

Objective-C

C++/CLI

Java

Python

public RasterImageFormat GetFormat( 
   Stream stream 
)

- (LTRasterImageFormat)formatOfStream:(LTLeadStream *)stream error:(NSError **)error

public RasterImageFormat getFormat(ILeadStream stream)

public: 
RasterImageFormat GetFormat(  
   Stream^ stream 
)

def GetFormat(self,stream):

Parameters

stream
A Stream containing the image data to query.

Return Value

The format of the image.

Remarks

GetInformation and GetFormat use GetInformation internally. So, if more information about the image is required, it is recommended to call GetInformation directly and obtain the data once.

Example

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing; 
using Leadtools.ImageProcessing.Color; 
using Leadtools.Svg; 
 
 
public void LoadPagesFromStreamTest() 
{ 
 
   // Create a new RasterCodecs instance 
   using (RasterCodecs rasterCodecs = new RasterCodecs()) 
   { 
      Stream stream = File.OpenRead(Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp")); 
      RasterImageFormat rasterImageFormat = rasterCodecs.GetFormat(stream); 
      int totalPages = rasterCodecs.GetTotalPages(stream); 
 
      // Using extensions in RasterCodecsExtensions 
      // GetInformationAsync is used to get CodecsImageInfo 
       using (ILeadStream outputLeadStream = LeadStream.Factory.FromStream(stream)) 
      { 
 
         //Using GetInformationAsync to obtain the format data as CodecsImageInfo, instead of the internal GetFormatAsync 
         Task<CodecsImageInfo> task = rasterCodecs.GetInformationAsync(outputLeadStream, true); 
         CodecsImageInfo codecsImageInfo = task.Result; 
                
         //Get task data 
         Debug.WriteLine($"Task ID: {task.Id}"); 
         Debug.WriteLine($"Is a Document File: {task.Result.Document.IsDocumentFile}"); 
         Debug.WriteLine($"codecsImageInfo Palette: {codecsImageInfo.GetPalette()}"); 
 
         // Get total pages using TotalPages instead of GetTotalPagesAsync 
         Debug.WriteLine($"Total Pages: {task.Result.TotalPages}"); 
 
      } 
 
      // Get the number of pages 
      int pageCount = rasterCodecs.GetTotalPages(stream); 
      Debug.WriteLine("Number of pages in the file is {0}", pageCount); 
 
      // Load all pages 
      for (int pageNumber = 1; pageNumber <= pageCount; pageNumber++) 
      { 
         using (RasterImage rasterImage = rasterCodecs.Load(stream, pageNumber)) 
         { 
            Debug.WriteLine("Page {0} loaded", pageNumber); 
         } 
      } 
   } 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images"; 
}

Requirements

Target Platforms

Reference

RasterCodecs Class

RasterCodecs Members

Overload List

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Help Version 22.0.2023.5.5

Leadtools.Codecs Assembly

Introduction

Getting Started

Namespaces

Leadtools.Codecs Namespace

Assemblies