RasterCodecs Class

Visual Basic
C#
WinRT 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

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.

NOTE: At this time, there are no multipage formats that support stamps.

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

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

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();
            });
      }
   }
}

[TestMethod]
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();
}

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();
}

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: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

RasterCodecs Members
Leadtools.Codecs Namespace
Loading and Saving Images
Loading and Saving Large Tiff Files
Speeding Up 1-Bit Documents
Fast File Info