org.epics.vtype

Interface VImage

All Superinterfaces:

VType

public interface VImage
extends VType

Represent a buffered image. Use ValueUtil.toImage(org.epics.vtype.VImage) and ValueUtil.toVImage(java.awt.image.BufferedImage) to convert objects of this class to and from awt images.

The data is currently encoded as 3 bytes for each pixel (RGB). To read the buffer in AWT use the following code:

 BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_3BYTE_BGR);
 System.arraycopy(buffer, 0, ((DataBufferByte) image.getRaster().getDataBuffer()).getData(), 0, 100*100*3);
 

To read in SWT:

 ImageData imageData = new ImageData(width, height, 24, new PaletteData(0xFF, 0xFF00, 0xFF0000), width*3, buffer);
 Image image = new Image(gc.getDevice(), imageData);
 

To prepare an image using Java2D:

 BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_3BYTE_BGR);
 Graphics2D g = image.createGraphics();
 ...
 byte[] buffer = ((DataBufferByte) image.getRaster().getDataBuffer()).getData();
 

TODO: should be extended to support different encodings.

Author:

carcassi

Method Summary

Methods

Modifier and Type	Method and Description
byte[]	getData() Image buffer;
int	getHeight() Height of the image in pixels.
int	getWidth() Width of the image in pixels.

Method Detail

getHeight

int getHeight()

Height of the image in pixels.

Returns:

image height

getWidth

int getWidth()

Width of the image in pixels.

Returns:

image width

getData

byte[] getData()

Image buffer;

Returns:

image buffer