C#
VB
WinRT C#
C++
Provides support for converting image data buffers.
public static class RasterBufferConverter
Public MustInherit NotInheritable Class RasterBufferConverter
public sealed static class RasterBufferConverter
function Leadtools.RasterBufferConverter()
public ref class RasterBufferConverter abstract sealed
This example loads an image at 24 bits per pixel, and creates a new image at 16 bits per pixel, and uses the Convert method to convert data from 24 bits per pixel to 16 bits per pixel.
using Leadtools;
using Leadtools.Codecs;
using LeadtoolsExamples.Common;
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);
}
}
}
}
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;
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
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