RasterBufferConverter Class

Visual Basic
C#
WinRT C#
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

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

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

public void RasterBufferConverterExample()
   {
      RasterCodecs codecs = new RasterCodecs();
      codecs.ThrowExceptionsOnInvalidImages = true;

      string srcFileName =  Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp"); 
      string destFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1_16bits.bmp");

      // Load the image, at 24 bit per pixel.
      RasterImage srcImage = codecs.Load(srcFileName, 24, CodecsLoadByteOrder.Bgr, 1, 1);
      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(),
         IntPtr.Zero,
         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, destFileName, RasterImageFormat.Bmp, 16);

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

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

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();
}

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: 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

RasterBufferConverter Members
Leadtools Namespace