Data Property

Summary

Gets the unmanaged buffer containing one or more lines of output image data that the command has already converted.

Syntax

C++/CLI

Java

Python

public IntPtr Data { get; }

public byte[] getData()

public: 
property IntPtr Data { 
   IntPtr get(); 
}

Data # get  (ColorResolutionCommandDataEventArgs)

Property Value

The buffer containing one or more lines of output image data that the command has already converted.

Remarks

This property returns the data in an unmanaged buffer. You can use the Marshal.Copy method to copy this data to a managed buffer.

To get the data in a managed array, use the DataArray property.

Example

Java

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing; 
 
 
public void ColorResolutionCommandDataEventArgsExample() 
{ 
	RasterCodecs codecs = new RasterCodecs(); 
 
	string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp"); 
	string destFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1_colorresData.bmp"); 
 
	// Load the source image from disk 
	RasterImage srcImage = codecs.Load(srcFileName); 
 
	// Create the destination image 
	_row = 0; 
	_destImage = new RasterImage( 
	   RasterMemoryFlags.Conventional, 
	   srcImage.Width, 
	   srcImage.Height, 
	   1, 
	   RasterByteOrder.Rgb, 
	   RasterViewPerspective.TopLeft, 
	   null, 
	   IntPtr.Zero, 
	   0); 
 
	// Color-res the image to 1 bits/pixel, we will save the data ourselves into 
	// the destination image 
	ColorResolutionCommand command = new ColorResolutionCommand(); 
	command.BitsPerPixel = 1; 
	command.DitheringMethod = RasterDitheringMethod.FloydStein; 
	command.Data += new EventHandler<ColorResolutionCommandDataEventArgs>(command_Data); 
	_destImage.Access(); 
	command.Run(srcImage); 
	_destImage.Release(); 
	command.Data -= new EventHandler<ColorResolutionCommandDataEventArgs>(command_Data); 
 
	// Save it to disk 
	codecs.Save(_destImage, destFileName, RasterImageFormat.Bmp, 4); 
 
	// Clean Up 
	_destImage.Dispose(); 
	srcImage.Dispose(); 
	codecs.Dispose(); 
} 
 
RasterImage _destImage; 
int _row; 
 
void command_Data(object sender, ColorResolutionCommandDataEventArgs e) 
{ 
	// Set the data into the destination image 
	_destImage.SetRow(_row, e.Data, _destImage.BytesPerLine * e.Lines); 
	_row += e.Lines; 
 
	// If you want the data in a managed buffer, 
	// you can do this 
	// byte[] data = new byte[_destImage.BytesPerLine * e.Lines]; 
	// System.Runtime.InteropServices.Marshal.Copy(e.Data, data, 0, data.Length); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
}

 
import java.io.File; 
import java.io.IOException; 
 
import org.junit.*; 
import org.junit.runner.JUnitCore; 
import org.junit.runner.Result; 
import org.junit.runner.notification.Failure; 
import static org.junit.Assert.*; 
 
import leadtools.*; 
import leadtools.codecs.*; 
import leadtools.imageprocessing.*; 
 
 
public void colorResolutionCommandDataEventArgsExample() { 
   final String LEAD_VARS_IMAGES_DIR = "C:\\LEADTOOLS23\\Resources\\Images"; 
   RasterCodecs codecs = new RasterCodecs(); 
   String srcFileName = combine(LEAD_VARS_IMAGES_DIR, "rgsref.cmp"); 
   String destFileName = combine(LEAD_VARS_IMAGES_DIR, "rgsref_colorresData.bmp"); 
 
   // Load the source image from disk 
   RasterImage srcImage = codecs.load(srcFileName); 
 
   // Create the destination image 
   byte[] userData = new byte[0]; 
   _row = 0; 
   _destImage = new RasterImage(RasterMemoryFlags.CONVENTIONAL.getValue(), srcImage.getWidth(), srcImage.getHeight(), 
         1, RasterByteOrder.RGB, RasterViewPerspective.TOP_LEFT, null, userData, 0); 
 
   // Color-res the image to 1 bits/pixel, we will save the data ourselves into 
   // the destination image 
   ColorResolutionCommand command = new ColorResolutionCommand(); 
   command.setBitsPerPixel(1); 
   command.setDitheringMethod(RasterDitheringMethod.FLOYD_STEIN); 
   command.addColorResolutionCommandDataListener(command_Data); 
   _destImage.access(); 
   command.run(srcImage); 
   _destImage.release(); 
   command.removeColorResolutionCommandDataListener(command_Data); 
 
   // Save it to disk 
   codecs.save(_destImage, destFileName, RasterImageFormat.BMP, 4); 
 
   assertTrue("file unsuccessfully saved to " + destFileName, (new File(destFileName)).exists()); 
   System.out.printf("File saved successfully to %s%n", destFileName); 
 
   // Clean Up 
   _destImage.dispose(); 
   srcImage.dispose(); 
   codecs.dispose(); 
} 
 
RasterImage _destImage; 
int _row; 
 
ColorResolutionCommandDataListener command_Data = new ColorResolutionCommandDataListener() { 
 
   @Override 
   public void onData(ColorResolutionCommandDataEvent e) { 
      // Set the data into the destination image 
      _destImage.setRow(_row, e.getData(), _destImage.getBytesPerLine() * e.getLines()); 
      _row += e.getLines(); 
   } 
 
};

Requirements

Target Platforms

Reference

ColorResolutionCommandDataEventArgs Class

ColorResolutionCommandDataEventArgs Members

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Help Version 23.0.2024.5.22

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