Package com.twelvemonkeys.imageio.plugins.bmp

Class BMPImageReader

java.lang.Object

javax.imageio.ImageReader

com.twelvemonkeys.imageio.ImageReaderBase

com.twelvemonkeys.imageio.plugins.bmp.BMPImageReader

public final class BMPImageReader
extends ImageReaderBase

ImageReader for Microsoft Windows Bitmap (BMP) format.

Version:

$Id: BMPImageReader.java,v 1.0 Apr 20, 2009 11:54:28 AM haraldk Exp$

See Also:

ICOImageReader

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private class	BMPImageReader.ListenerDelegator

Field Summary

Fields

Modifier and Type	Field	Description
private java.awt.image.IndexColorModel	colorMap
private int[]	colors
private DIBHeader	header
private javax.imageio.ImageReader	jpegReaderDelegate
private long	pixelOffset
private javax.imageio.ImageReader	pngReaderDelegate

Fields inherited from class com.twelvemonkeys.imageio.ImageReaderBase

imageInput

Fields inherited from class javax.imageio.ImageReader

availableLocales, ignoreMetadata, input, locale, minIndex, originatingProvider, progressListeners, seekForwardOnly, updateListeners, warningListeners, warningLocales

Constructor Summary

Constructors

Constructor	Description
BMPImageReader()
BMPImageReader(javax.imageio.spi.ImageReaderSpi provider)

Method Summary

Modifier and Type	Method	Description
private java.awt.image.Raster	clipRowToRect(java.awt.image.Raster raster, java.awt.Rectangle rect, int[] bands, int xSub)
private java.awt.image.WritableRaster	clipToRect(java.awt.image.WritableRaster raster, java.awt.Rectangle rect, int[] bands)
private int[]	createOffsets(int numBands)
int	getHeight(int imageIndex)
javax.imageio.metadata.IIOMetadata	getImageMetadata(int imageIndex)	Default implementation that always returns null.
private javax.imageio.ImageReader	getImageReaderDelegate(int compression)
java.util.Iterator<javax.imageio.ImageTypeSpecifier>	getImageTypes(int imageIndex)
int	getNumImages(boolean allowSearch)	Default implementation that always returns 1.
javax.imageio.ImageTypeSpecifier	getRawImageType(int imageIndex)
int	getWidth(int imageIndex)
private javax.imageio.ImageReader	initReaderDelegate(int compression)
static void	main(java.lang.String[] args)
java.awt.image.BufferedImage	read(int imageIndex, javax.imageio.ImageReadParam param)
private java.awt.image.IndexColorModel	readColorMap()
private static void	readFully(java.io.DataInput input, int[] ints)
private static void	readFully(java.io.DataInput input, short[] shorts)
private void	readHeader()
private void	readRowByte(java.io.DataInput input, int height, java.awt.Rectangle srcRegion, int xSub, int ySub, int bitsPerSample, int samplesPerPixel, byte[] rowDataByte, java.awt.image.WritableRaster destChannel, java.awt.image.Raster srcChannel, int y)
private void	readRowInt(java.io.DataInput input, int height, java.awt.Rectangle srcRegion, int xSub, int ySub, int[] rowDataInt, java.awt.image.WritableRaster destChannel, java.awt.image.Raster srcChannel, int y)
private void	readRowUShort(java.io.DataInput input, int height, java.awt.Rectangle srcRegion, int xSub, int ySub, short[] rowDataUShort, java.awt.image.WritableRaster destChannel, java.awt.image.Raster srcChannel, int y)
private java.awt.image.BufferedImage	readUsingDelegate(int compression, javax.imageio.ImageReadParam param)
protected void	resetMembers()	Resets all member variables.
(package private) static <T extends java.lang.Throwable> void	throwAs(java.lang.Class<T> type, java.lang.Throwable throwable)

Methods inherited from class com.twelvemonkeys.imageio.ImageReaderBase

assertInput, checkBounds, dispose, fakeAOI, fakeSubsampling, getDestination, getStreamMetadata, hasExplicitDestination, reset, setInput, showIt

Methods inherited from class javax.imageio.ImageReader

abort, abortRequested, addIIOReadProgressListener, addIIOReadUpdateListener, addIIOReadWarningListener, canReadRaster, checkReadParamBandSettings, clearAbortRequest, computeRegions, getAspectRatio, getAvailableLocales, getDefaultReadParam, getFormatName, getImageMetadata, getInput, getLocale, getMinIndex, getNumThumbnails, getOriginatingProvider, getSourceRegion, getStreamMetadata, getThumbnailHeight, getThumbnailWidth, getTileGridXOffset, getTileGridYOffset, getTileHeight, getTileWidth, hasThumbnails, isIgnoringMetadata, isImageTiled, isRandomAccessEasy, isSeekForwardOnly, processImageComplete, processImageProgress, processImageStarted, processImageUpdate, processPassComplete, processPassStarted, processReadAborted, processSequenceComplete, processSequenceStarted, processThumbnailComplete, processThumbnailPassComplete, processThumbnailPassStarted, processThumbnailProgress, processThumbnailStarted, processThumbnailUpdate, processWarningOccurred, processWarningOccurred, read, readAll, readAll, readAsRenderedImage, readerSupportsThumbnails, readRaster, readThumbnail, readTile, readTileRaster, removeAllIIOReadProgressListeners, removeAllIIOReadUpdateListeners, removeAllIIOReadWarningListeners, removeIIOReadProgressListener, removeIIOReadUpdateListener, removeIIOReadWarningListener, setInput, setInput, setLocale

Methods inherited from class java.lang.Object

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

Field Detail

pixelOffset

private long pixelOffset

header

private DIBHeader header

colors

private int[] colors

colorMap

private java.awt.image.IndexColorModel colorMap

jpegReaderDelegate

private javax.imageio.ImageReader jpegReaderDelegate

pngReaderDelegate

private javax.imageio.ImageReader pngReaderDelegate

Constructor Detail

BMPImageReader

public BMPImageReader()

BMPImageReader

BMPImageReader(javax.imageio.spi.ImageReaderSpi provider)

Method Detail

resetMembers

protected void resetMembers()

Description copied from class: ImageReaderBase

Resets all member variables. This method is by default invoked from:

• ImageReaderBase.setInput(Object, boolean, boolean)
• ImageReaderBase.dispose()
• ImageReaderBase.reset()

Specified by:

resetMembers in class ImageReaderBase

getNumImages

public int getNumImages(boolean allowSearch)
                 throws java.io.IOException

Description copied from class: ImageReaderBase

Default implementation that always returns 1.

Overrides:

getNumImages in class ImageReaderBase

Parameters:

allowSearch - ignored, unless overridden

Returns:

1, unless overridden

Throws:

java.io.IOException - never, unless overridden

readHeader

private void readHeader()
                 throws java.io.IOException

Throws:

java.io.IOException

readColorMap

private java.awt.image.IndexColorModel readColorMap()
                                             throws java.io.IOException

Throws:

java.io.IOException

getWidth

public int getWidth(int imageIndex)
             throws java.io.IOException

Specified by:

getWidth in class javax.imageio.ImageReader

Throws:

java.io.IOException

getHeight

public int getHeight(int imageIndex)
              throws java.io.IOException

Specified by:

getHeight in class javax.imageio.ImageReader

Throws:

java.io.IOException

getImageTypes

public java.util.Iterator<javax.imageio.ImageTypeSpecifier> getImageTypes(int imageIndex)
                                                                   throws java.io.IOException

Specified by:

getImageTypes in class javax.imageio.ImageReader

Throws:

java.io.IOException

getRawImageType

public javax.imageio.ImageTypeSpecifier getRawImageType(int imageIndex)
                                                 throws java.io.IOException

Overrides:

getRawImageType in class javax.imageio.ImageReader

Throws:

java.io.IOException

read

public java.awt.image.BufferedImage read(int imageIndex,
                                         javax.imageio.ImageReadParam param)
                                  throws java.io.IOException

Specified by:

read in class javax.imageio.ImageReader

Throws:

java.io.IOException

readUsingDelegate

private java.awt.image.BufferedImage readUsingDelegate(int compression,
                                                       javax.imageio.ImageReadParam param)
                                                throws java.io.IOException

Throws:

java.io.IOException

initReaderDelegate

private javax.imageio.ImageReader initReaderDelegate(int compression)
                                              throws java.io.IOException

Throws:

java.io.IOException

getImageReaderDelegate

private javax.imageio.ImageReader getImageReaderDelegate(int compression)
                                                  throws javax.imageio.IIOException

Throws:

javax.imageio.IIOException

createOffsets

private int[] createOffsets(int numBands)

readRowByte

private void readRowByte(java.io.DataInput input,
                         int height,
                         java.awt.Rectangle srcRegion,
                         int xSub,
                         int ySub,
                         int bitsPerSample,
                         int samplesPerPixel,
                         byte[] rowDataByte,
                         java.awt.image.WritableRaster destChannel,
                         java.awt.image.Raster srcChannel,
                         int y)
                  throws java.io.IOException

Throws:

java.io.IOException

readRowUShort

private void readRowUShort(java.io.DataInput input,
                           int height,
                           java.awt.Rectangle srcRegion,
                           int xSub,
                           int ySub,
                           short[] rowDataUShort,
                           java.awt.image.WritableRaster destChannel,
                           java.awt.image.Raster srcChannel,
                           int y)
                    throws java.io.IOException

Throws:

java.io.IOException

readRowInt

private void readRowInt(java.io.DataInput input,
                        int height,
                        java.awt.Rectangle srcRegion,
                        int xSub,
                        int ySub,
                        int[] rowDataInt,
                        java.awt.image.WritableRaster destChannel,
                        java.awt.image.Raster srcChannel,
                        int y)
                 throws java.io.IOException

Throws:

java.io.IOException

readFully

private static void readFully(java.io.DataInput input,
                              short[] shorts)
                       throws java.io.IOException

Throws:

java.io.IOException

readFully

private static void readFully(java.io.DataInput input,
                              int[] ints)
                       throws java.io.IOException

Throws:

java.io.IOException

clipRowToRect

private java.awt.image.Raster clipRowToRect(java.awt.image.Raster raster,
                                            java.awt.Rectangle rect,
                                            int[] bands,
                                            int xSub)

clipToRect

private java.awt.image.WritableRaster clipToRect(java.awt.image.WritableRaster raster,
                                                 java.awt.Rectangle rect,
                                                 int[] bands)

getImageMetadata

public javax.imageio.metadata.IIOMetadata getImageMetadata(int imageIndex)
                                                    throws java.io.IOException

Description copied from class: ImageReaderBase

Default implementation that always returns null.

Overrides:

getImageMetadata in class ImageReaderBase

Parameters:

imageIndex - ignored, unless overridden

Returns:

null, unless overridden

Throws:

java.io.IOException - never, unless overridden.

main

public static void main(java.lang.String[] args)

throwAs

static <T extends java.lang.Throwable> void throwAs(java.lang.Class<T> type,
                                                    java.lang.Throwable throwable)
                                             throws T extends java.lang.Throwable

Throws:

T extends java.lang.Throwable