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 IndexColorModel	colorMap
private int[]	colors
private DIBHeader	header
private ImageReader	jpegReaderDelegate
private long	pixelOffset
private ImageReader	pngReaderDelegate

Fields inherited from class ImageReaderBase

imageInput

Fields inherited from class ImageReader

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

Constructor Summary

Constructors

Constructor	Description
BMPImageReader()
BMPImageReader(ImageReaderSpi provider)

Method Summary

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

Methods inherited from class ImageReaderBase

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

Methods inherited from class 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 Object

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

Field Details

pixelOffset

private long pixelOffset

header

private DIBHeader header

colors

private int[] colors

colorMap

private IndexColorModel colorMap

jpegReaderDelegate

private ImageReader jpegReaderDelegate

pngReaderDelegate

private ImageReader pngReaderDelegate

Constructor Details

BMPImageReader

public BMPImageReader()

BMPImageReader

BMPImageReader(ImageReaderSpi provider)

Method Details

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 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:

IOException - never, unless overridden

readHeader

private void readHeader()
                 throws IOException

Throws:

IOException

readColorMap

private IndexColorModel readColorMap()
                              throws IOException

Throws:

IOException

getWidth

public int getWidth(int imageIndex)
             throws IOException

Specified by:

getWidth in class ImageReader

Throws:

IOException

getHeight

public int getHeight(int imageIndex)
              throws IOException

Specified by:

getHeight in class ImageReader

Throws:

IOException

getImageTypes

public Iterator<ImageTypeSpecifier> getImageTypes(int imageIndex)
                                           throws IOException

Specified by:

getImageTypes in class ImageReader

Throws:

IOException

getRawImageType

public ImageTypeSpecifier getRawImageType(int imageIndex)
                                   throws IOException

Overrides:

getRawImageType in class ImageReader

Throws:

IOException

read

public BufferedImage read(int imageIndex,
 ImageReadParam param)
                   throws IOException

Specified by:

read in class ImageReader

Throws:

IOException

readUsingDelegate

private BufferedImage readUsingDelegate(int compression,
 ImageReadParam param)
                                 throws IOException

Throws:

IOException

initReaderDelegate

private ImageReader initReaderDelegate(int compression)
                                throws IOException

Throws:

IOException

getImageReaderDelegate

private ImageReader getImageReaderDelegate(int compression)
                                    throws IIOException

Throws:

IIOException

createOffsets

private int[] createOffsets(int numBands)

readRowByte

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

Throws:

IOException

readRowUShort

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

Throws:

IOException

readRowInt

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

Throws:

IOException

readFully

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

Throws:

IOException

readFully

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

Throws:

IOException

clipRowToRect

private Raster clipRowToRect(Raster raster,
 Rectangle rect,
 int[] bands,
 int xSub)

clipToRect

private WritableRaster clipToRect(WritableRaster raster,
 Rectangle rect,
 int[] bands)

getImageMetadata

public IIOMetadata getImageMetadata(int imageIndex)
                             throws 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:

IOException - never, unless overridden.

main

public static void main(String[] args)

throwAs

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

Throws:

T