RasterBufferConverter Class

public static class RasterBufferConverter

public sealed static class RasterBufferConverter

function Leadtools.RasterBufferConverter()

public ref class RasterBufferConverter abstract sealed

'Declaration
 
Public MustInherit NotInheritable Class RasterBufferConverter

'Usage
 
Dim instance As RasterBufferConverter

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