com.twelvemonkeys.image

Class MagickUtil

java.lang.Object

com.twelvemonkeys.image.MagickUtil

public final class MagickUtil
extends Object

Utility for converting JMagick MagickImages to standard Java BufferedImages and back.

NOTE: This class is considered an implementation detail and not part of the public API. This class is subject to change without further notice. You have been warned. :-)

Version:

$Id: //depot/branches/personal/haraldk/twelvemonkeys/release-2/twelvemonkeys-core/src/main/java/com/twelvemonkeys/image/MagickUtil.java#4 $

Author:

Harald Kuhr

Method Summary

Modifier and Type	Method and Description
static IndexColorModel	createIndexColorModel(magick.PixelPacket[] pColormap, boolean pAlpha) Creates an IndexColorModel from an array of PixelPackets.
static BufferedImage	toBuffered(magick.MagickImage pImage) Converts a MagickImage to a BufferedImage.
static magick.MagickImage	toMagick(BufferedImage pImage) Converts a BufferedImage to a MagickImage.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

toBuffered

public static BufferedImage toBuffered(magick.MagickImage pImage)
                                throws magick.MagickException

Converts a MagickImage to a BufferedImage.

The conversion depends on pImage's ImageType:

ImageType.BilevelType

BufferedImage of type TYPE_BYTE_BINARY

ImageType.GrayscaleType

BufferedImage of type TYPE_BYTE_GRAY

ImageType.GrayscaleMatteType

BufferedImage of type TYPE_USHORT_GRAY

ImageType.PaletteType

BufferedImage of type TYPE_BYTE_BINARY (for images with a palette of <= 16 colors) or TYPE_BYTE_INDEXED

ImageType.PaletteMatteType

BufferedImage of type TYPE_BYTE_BINARY (for images with a palette of <= 16 colors) or TYPE_BYTE_INDEXED

ImageType.TrueColorType

BufferedImage of type TYPE_3BYTE_BGR

ImageType.TrueColorPaletteType

BufferedImage of type TYPE_4BYTE_ABGR

Parameters:

pImage - the original MagickImage

Returns:

a new BufferedImage

Throws:

IllegalArgumentException - if pImage is null or if the ImageType is not one mentioned above.

magick.MagickException - if an exception occurs during conversion

See Also:

BufferedImage

toMagick

public static magick.MagickImage toMagick(BufferedImage pImage)
                                   throws magick.MagickException

Converts a BufferedImage to a MagickImage.

The conversion depends on pImage's ColorModel:

IndexColorModel with 1 bit b/w

MagickImage of type ImageType.BilevelType

IndexColorModel > 1 bit,

MagickImage of type ImageType.PaletteType or MagickImage of type ImageType.PaletteMatteType depending on ColorModel.getAlpha()

ColorModel.getColorSpace().getType() == ColorSpace.TYPE_GRAY

MagickImage of type ImageType.GrayscaleType or MagickImage of type ImageType.GrayscaleMatteType depending on ColorModel.getAlpha()

ColorModel.getColorSpace().getType() == ColorSpace.TYPE_RGB

MagickImage of type ImageType.TrueColorType or MagickImage of type ImageType.TrueColorPaletteType

Parameters:

pImage - the original BufferedImage

Returns:

a new MagickImage

Throws:

IllegalArgumentException - if pImage is null or if the ColorModel is not one mentioned above.

magick.MagickException - if an exception occurs during conversion

See Also:

BufferedImage

createIndexColorModel

public static IndexColorModel createIndexColorModel(magick.PixelPacket[] pColormap,
                                                    boolean pAlpha)

Creates an IndexColorModel from an array of PixelPackets.

Parameters:

pColormap - the original colormap as a PixelPacket array

pAlpha - keep alpha channel

Returns:

a new IndexColorModel