RasterBufferConverter Class

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

public static class RasterBufferConverter

'Declaration
 
Public MustInherit NotInheritable Class RasterBufferConverter

'Usage
 
Dim instance As RasterBufferConverter

public sealed static class RasterBufferConverter

function Leadtools.RasterBufferConverter()

public ref class RasterBufferConverter abstract sealed

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

Copy Code

Imports Leadtools
  Imports Leadtools.Codecs

  Public Sub RasterBufferConverterExample()
   Dim codecs As RasterCodecs = New RasterCodecs()
   codecs.ThrowExceptionsOnInvalidImages = True

   Dim srcFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp")
   Dim destFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1_16bits.bmp")

   ' Load the image, at 24 bit per pixel.
   Dim srcImage As RasterImage = codecs.Load(srcFileName, 24, CodecsLoadByteOrder.Bgr, 1, 1)
   Debug.Assert(srcImage.BitsPerPixel = 24)

   Dim buffer As Byte() = New Byte(srcImage.BytesPerLine - 1) {}

   ' Create a new 16-bit image.
   Dim destImage As RasterImage = New RasterImage(RasterMemoryFlags.Conventional, srcImage.Width, srcImage.Height, 16, srcImage.Order, srcImage.ViewPerspective, srcImage.GetPalette(), IntPtr.Zero, 0)

   Debug.Assert(destImage.BitsPerPixel = 16)

   ' Process each row from src to dest image
   srcImage.Access()
   destImage.Access()

   Dim i As Integer = 0
   Do While i < srcImage.Height
      srcImage.GetRow(i, buffer, 0, srcImage.BytesPerLine)

      RasterBufferConverter.Convert(buffer, 0, srcImage.Width, srcImage.BitsPerPixel, destImage.BitsPerPixel, srcImage.Order, destImage.Order, Nothing, Nothing, 0)

      destImage.SetRow(i, buffer, 0, destImage.BytesPerLine)
      i += 1
   Loop

   destImage.Release()
   srcImage.Release()

   ' Save the destination image back to disk
   codecs.Save(destImage, destFileName, RasterImageFormat.Bmp, 16)

   ' Clean up
   srcImage.Dispose()
   destImage.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;

      
public void RasterBufferConverterExample()
{
   string srcFileName = Path.Combine(ImagesPath.Path, "Image1.cmp");
   string destFileName = Path.Combine(ImagesPath.Path, "Image1_16bits.bmp");
   using (RasterCodecs codecs = new RasterCodecs())
   {
      codecs.ThrowExceptionsOnInvalidImages = true;

      // Load the image, at 24 bit per pixel.
      using (RasterImage srcImage = codecs.Load(srcFileName, 24, CodecsLoadByteOrder.Bgr, 1, 1))
      {
         Assert.IsNotNull(srcImage);
         Assert.IsTrue(srcImage.BitsPerPixel == 24);

         // Create a new 16-bit image.
         using (RasterImage destImage = new RasterImage(
            RasterMemoryFlags.Conventional,
            srcImage.Width,
            srcImage.Height,
            16,
            srcImage.Order,
            srcImage.ViewPerspective,
            srcImage.GetPalette(),
            IntPtr.Zero,
            0))
         {

            Assert.IsNotNull(destImage);
            Assert.IsTrue(destImage.BitsPerPixel == 16);

            // Create a buffer large enough to hold one row at a time.
            byte[] buffer = new byte[srcImage.BytesPerLine];

            // Process each row from src to dest image
            srcImage.Access();
            destImage.Access();

            for (int i = 0; i < srcImage.Height; i++)
            {
               srcImage.GetRow(i, buffer, 0, srcImage.BytesPerLine);

               RasterBufferConverter.Convert(
                  buffer,
                  0,
                  srcImage.Width,
                  srcImage.BitsPerPixel,
                  destImage.BitsPerPixel,
                  srcImage.Order,
                  destImage.Order,
                  null,
                  null,
                  0);

               destImage.SetRow(i, buffer, 0, destImage.BytesPerLine);
            }

            destImage.Release();
            srcImage.Release();

            // Save the destination image back to disk
            codecs.Save(destImage, destFileName, RasterImageFormat.Bmp, 16);
         }
      }
   }
}

using Leadtools;
using Leadtools.Codecs;
using Leadtools.Examples;

public void RasterBufferConverterExample(RasterImage srcImage, Stream destStream)
{
   // srcImage should be 24 bits per pixel.
   RasterCodecs codecs = new RasterCodecs();
   codecs.ThrowExceptionsOnInvalidImages = true;
   // Load the image, at 24 bit per pixel.
   Debug.Assert(srcImage.BitsPerPixel == 24);

   byte[] buffer  = new byte[srcImage.BytesPerLine];

   // Create a new 16-bit image.
   RasterImage destImage = new RasterImage(
      RasterMemoryFlags.Conventional,
      srcImage.Width,
      srcImage.Height,
      16,
      srcImage.Order,
      srcImage.ViewPerspective,
      srcImage.GetPalette(),
      null,
      0);

   Debug.Assert(destImage.BitsPerPixel == 16);

   // Process each row from src to dest image
   srcImage.Access();
   destImage.Access();

   for(int i = 0; i < srcImage.Height; i++)
   {
      srcImage.GetRow(i, buffer, 0, srcImage.BytesPerLine);

      RasterBufferConverter.Convert(
         buffer,
         0,
         srcImage.Width,
         srcImage.BitsPerPixel,
         destImage.BitsPerPixel,
         srcImage.Order,
         destImage.Order,
         null,
         null,
         0);

      destImage.SetRow(i, buffer, 0, destImage.BytesPerLine);
   }

   destImage.Release();
   srcImage.Release();

   // Save the destination image back to disk
   codecs.Save(destImage, destStream, RasterImageFormat.Bmp, 16);

   // Clean up
   srcImage.Dispose();
   destImage.Dispose();
}

Imports Leadtools
Imports Leadtools.Codecs

Public Sub RasterBufferConverterExample(ByVal srcImage As RasterImage, ByVal destStream As Stream)
   ' srcImage should be 24 bits per pixel.
   Dim codecs As RasterCodecs = New RasterCodecs()
   codecs.ThrowExceptionsOnInvalidImages = True
   ' Load the image, at 24 bit per pixel.
   Debug.Assert(srcImage.BitsPerPixel = 24)

   Dim buffer As Byte() = New Byte(srcImage.BytesPerLine - 1){}

   ' Create a new 16-bit image.
   Dim destImage As RasterImage = New RasterImage(RasterMemoryFlags.Conventional, srcImage.Width, srcImage.Height, 16, srcImage.Order, srcImage.ViewPerspective, srcImage.GetPalette(), Nothing, 0)

   Debug.Assert(destImage.BitsPerPixel = 16)

   ' Process each row from src to dest image
   srcImage.Access()
   destImage.Access()

   Dim i As Integer = 0
   Do While i < srcImage.Height
      srcImage.GetRow(i, buffer, 0, srcImage.BytesPerLine)

      RasterBufferConverter.Convert(buffer, 0, srcImage.Width, srcImage.BitsPerPixel, destImage.BitsPerPixel, srcImage.Order, destImage.Order, Nothing, Nothing, 0)

      destImage.SetRow(i, buffer, 0, destImage.BytesPerLine)
      i += 1
   Loop

   destImage.Release()
   srcImage.Release()

   ' Save the destination image back to disk
   codecs.Save(destImage, destStream, RasterImageFormat.Bmp, 16)

   ' Clean up
   srcImage.Dispose()
   destImage.Dispose()
End Sub

Target Platforms

Reference

RasterBufferConverter Members
Leadtools Namespace