bmp (DHD Multimedia Gallery V1.53.0 Javadoc)

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org.hd.d.pg2k.svrCore.mediahandler
Class bmp

java.lang.Object
  org.hd.d.pg2k.svrCore.MIME.AbstractHandler
      org.hd.d.pg2k.svrCore.MIME.AbstractImageHandler
          org.hd.d.pg2k.svrCore.mediahandler.bmp

All Implemented Interfaces:: Handler

public final class bmp
extends AbstractImageHandler
extends AbstractImageHandler

Basic handler for BMP file (MIME type image/bmp). Mainly relies on JAI/IIO support for encode/decode.

Nested Class Summary

Nested classes/interfaces inherited from interface org.hd.d.pg2k.svrCore.MIME.Handler
`Handler.ThumbnailParams`

Field Summary
`private static Handler.ThumbnailParams`	`thumbnailParams` Gather together thumbnail parameters.

Fields inherited from interface org.hd.d.pg2k.svrCore.MIME.Handler
`TAG_NAME_METADATA_TOP`

Constructor Summary
`bmp()`

Method Summary
`protected int`	`_reduceColoursQualityThreshold()` Guide colour-reduction to reduce quality and size of lossless image formats.
`boolean`	`canMakeThumbnails()` Returns true if this can make thumbnail/sample exhibits for this type.
`ExhibitMIME.ExhibitTypeParameters`	`getExhibitType()` Get internal type of ExhibitMIME type; never null.
`Handler.ThumbnailParams`	`getThumbnailParams()` Get ThumbnailParameters for BMP handler.

Methods inherited from class org.hd.d.pg2k.svrCore.MIME.AbstractImageHandler
`_getEncoder, _trimMetadata, decodeImage, estimateWorkingMemoryToCreateThumbnails, extractSpecificImageMetaData, get2DImageDimensions, getMetadata, makeImageBinary, makeSizeConstrainedEncodedImage, makeThumbnailImage, makeThumbnails, makeThumbnails`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

thumbnailParams

private static final Handler.ThumbnailParams thumbnailParams

Gather together thumbnail parameters.

Constructor Detail

bmp

public bmp()

Method Detail

getExhibitType

public ExhibitMIME.ExhibitTypeParameters getExhibitType()

Get internal type of ExhibitMIME type; never null.

canMakeThumbnails

public boolean canMakeThumbnails()

Returns true if this can make thumbnail/sample exhibits for this type. Returns true because we should be able to make BMP thumbnails with the built-in imageIO support from JDK1.5 onwards.

Specified by:: canMakeThumbnails in interface Handler
Overrides:: canMakeThumbnails in class AbstractImageHandler

getThumbnailParams

public Handler.ThumbnailParams getThumbnailParams()

Get ThumbnailParameters for BMP handler.

Specified by:: getThumbnailParams in interface Handler
Overrides:: getThumbnailParams in class AbstractHandler

_reduceColoursQualityThreshold

protected int _reduceColoursQualityThreshold()

Description copied from class: AbstractImageHandler

Guide colour-reduction to reduce quality and size of lossless image formats. Defaults to -1, implying that the image format is a lossy format for which the ImageWriteParam.setCompressionQuality() mechanism is enough to trade encoded image size for quality.

Else this is a positive value n, typically 8 or 24, which sets a quality level at/below which the number of colours in the image is reduced to (capped at) 2^n, and the image representation may be tweaked too (eg converted to a palette/indexed format) as a strong hint to the encoder.

Overrides:: _reduceColoursQualityThreshold in class AbstractImageHandler