RasterCodecs Class

C#
Visual Basic
WinRT C#
Java
Objective-C
WinRT JavaScript
C++

public class RasterCodecs : System.IDisposable

'Declaration

Public Class RasterCodecs 
   Implements System.IDisposable

'Usage

Dim instance As RasterCodecs

public sealed class RasterCodecs : IClosable //In WinRT the IDisposable interface is replaced by IClosable

@interface LTRasterCodecs : NSObject

public class RasterCodecs

function Leadtools.Codecs.RasterCodecs()

public ref class RasterCodecs : public System.IDisposable

LEADTOOLS provides many options for loading and saving image files.

Whether an image file is on disk or in memory, you can get information about the image before loading it. You can also handle file-format-specific information, such as the page number or physical resolution.

You can supply the input for a load operation or the output of a save operation, and you can add processing, such as a paint-while-load feature.

You can create as many instances of the RasterCodecs class as desired. However, you should not pass a RasterCodecs object created in one thread to another. Instead, create another instance of RasterCodecs in the thread. If desired, you can copy the options from one RasterCodecs object to another by cloning the options from the source RasterCodecs using CodecsOptions.Clone and setting in the destination object Options property.

The RasterCodecs.SaveOptions and RasterCodecs.LoadOptions methods can be used to save or load the current options to a disk file or a stream.

This example loads an existing image file and re-saves it in another format.

C#
Visual Basic
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing
Imports Leadtools.ImageProcessing.Color
Imports Leadtools.Drawing
Imports Leadtools.Svg

      
Public Sub RasterCodecsExample()
   Dim codecs As RasterCodecs = New RasterCodecs()
   Dim srcFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp")
   Dim dstFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1_test.jpg")

   Dim image As RasterImage = codecs.Load(srcFileName)
   codecs.Save(image, dstFileName, RasterImageFormat.Jpeg, 0)

   ' Clean up
   image.Dispose()
   codecs.Dispose()
End Sub

Public NotInheritable Class LEAD_VARS
Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class

using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using Leadtools.ImageProcessing.Color;
using Leadtools.Svg;

      
public void RasterCodecsExample()
{
   RasterCodecs codecs = new RasterCodecs();
   string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp");
   string dstFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1_test.jpg");

   RasterImage image = codecs.Load(srcFileName);
   codecs.Save(image, dstFileName, RasterImageFormat.Jpeg, 0);

   // Clean up
   image.Dispose();
   codecs.Dispose();
}

static class LEAD_VARS
{
public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}

RasterCodecsExamples.prototype.RasterCodecsExample = function () {
   Tools.SetLicense();
   with (Leadtools) {
      with (Leadtools.Codecs) {
         var codecs = new RasterCodecs();

         var srcFileName = "Assets\\Image1.cmp";
         var destFileName = "Image1_test.jpg";
         var image;
         // Load the image
         return Tools.AppInstallFolder().getFileAsync(srcFileName).then(function (loadFile) {
            return codecs.loadAsync(LeadStreamFactory.create(loadFile))
         })
            .then(function (img) {
               image = img;
               //Save as JPEG
               return Tools.AppLocalFolder().createFileAsync(destFileName)
            })
            .then(function (saveFile) {
               return codecs.saveAsync(image, LeadStreamFactory.create(saveFile), RasterImageFormat.jpeg, 0)
            })
            .then(function () {
               // Clean up
               image.close();
               codecs.close();
            });
      }
   }
}

using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using Leadtools.ImageProcessing.Color;

      
public async Task RasterCodecsExample()
{
   RasterCodecs codecs = new RasterCodecs();
   string srcFileName = @"Assets\Image1.cmp";
   string destFileName = @"Image1_test.jpg";

   // Load the image
   StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(srcFileName);
   RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile));

   //Save as JPEG
   StorageFile saveFile = await Tools.AppLocalFolder.CreateFileAsync(destFileName);
   await codecs.SaveAsync(image, LeadStreamFactory.Create(saveFile), RasterImageFormat.Jpeg, 0);

   // Clean up
   image.Dispose();
   codecs.Dispose();
}

using Leadtools;
using Leadtools.Codecs;
using Leadtools.Examples;
using Leadtools.ImageProcessing;
using Leadtools.ImageProcessing.Color;
using Leadtools.Windows.Media;

public void RasterCodecsExample(Stream inStream, Stream outStream)
{
   RasterCodecs codecs = new RasterCodecs();
   RasterImage image = codecs.Load(inStream);
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 0);

   // Clean up
   image.Dispose();
}

Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing
Imports Leadtools.ImageProcessing.Color
Imports Leadtools.Windows.Media

Public Sub RasterCodecsExample(ByVal inStream As Stream, ByVal outStream As Stream)
   Dim codecs As RasterCodecs = New RasterCodecs()
   Dim image As RasterImage = codecs.Load(inStream)
   codecs.Save(image, outStream, RasterImageFormat.Jpeg, 0)

   ' Clean up
   image.Dispose()
End Sub

Target Platforms

Reference

RasterCodecs Members
Leadtools.Codecs Namespace
Summary Of All Supported Image File Formats
Loading and Saving Images
Loading and Saving Large TIFF / BigTIFF Files
Speeding Up 1-Bit Documents
Fast File Info