com.sun.media.imageioimpl.plugins.tiff

Class TIFFJPEGDecompressor

java.lang.Object

com.sun.media.imageio.plugins.tiff.TIFFDecompressor

com.sun.media.imageioimpl.plugins.tiff.TIFFJPEGDecompressor

Direct Known Subclasses:

TIFFOldJPEGDecompressor

public class TIFFJPEGDecompressor
extends TIFFDecompressor

Field Summary

Fields

Modifier and Type	Field and Description
protected static int	EOI
protected boolean	hasJPEGTables
protected javax.imageio.ImageReadParam	JPEGParam
protected javax.imageio.ImageReader	JPEGReader
protected static int	SOI
protected byte[]	tables

Fields inherited from class com.sun.media.imageio.plugins.tiff.TIFFDecompressor

activeSrcHeight, activeSrcMinX, activeSrcMinY, activeSrcWidth, bitsPerSample, byteCount, colorConverter, colorMap, compression, destinationBands, dstHeight, dstMinX, dstMinY, dstWidth, dstXOffset, dstYOffset, extraSamples, image, metadata, offset, photometricInterpretation, planar, rawImage, reader, sampleFormat, samplesPerPixel, sourceBands, sourceXOffset, sourceYOffset, srcHeight, srcMinX, srcMinY, srcWidth, stream, subsampleX, subsampleY

Constructor Summary

Constructors

Constructor and Description
TIFFJPEGDecompressor()

Method Summary

Methods

Modifier and Type	Method and Description
void	beginDecoding() This routine is called prior to a sequence of calls to the decode method, in order to allow any necessary tables or other structures to be initialized based on metadata values.
void	decodeRaw(byte[] b, int dstOffset, int bitsPerPixel, int scanlineStride) Decodes the source data into the provided byte array b, starting at the offset given by dstOffset.
protected void	finalize()

Methods inherited from class com.sun.media.imageio.plugins.tiff.TIFFDecompressor

createRawImage, decode, decodeRaw, decodeRaw, decodeRaw, getRawImageType, getRawImageTypeSpecifier, setActiveSrcHeight, setActiveSrcMinX, setActiveSrcMinY, setActiveSrcWidth, setBitsPerSample, setByteCount, setColorConverter, setColorMap, setCompression, setDestinationBands, setDstHeight, setDstMinX, setDstMinY, setDstWidth, setDstXOffset, setDstYOffset, setExtraSamples, setImage, setMetadata, setOffset, setPhotometricInterpretation, setPlanar, setReader, setSampleFormat, setSamplesPerPixel, setSourceBands, setSourceXOffset, setSourceYOffset, setSrcHeight, setSrcMinX, setSrcMinY, setSrcWidth, setStream, setSubsampleX, setSubsampleY

Methods inherited from class java.lang.Object

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

Field Detail

SOI

protected static final int SOI

See Also:

Constant Field Values

EOI

protected static final int EOI

See Also:

Constant Field Values

JPEGReader

protected javax.imageio.ImageReader JPEGReader

JPEGParam

protected javax.imageio.ImageReadParam JPEGParam

hasJPEGTables

protected boolean hasJPEGTables

tables

protected byte[] tables

Constructor Detail

TIFFJPEGDecompressor

public TIFFJPEGDecompressor()

Method Detail

beginDecoding

public void beginDecoding()

Description copied from class: TIFFDecompressor

This routine is called prior to a sequence of calls to the decode method, in order to allow any necessary tables or other structures to be initialized based on metadata values. This routine is guaranteed to be called any time the metadata values have changed.

The default implementation computes tables used by the decode method to rescale components to different bit depths. Thus, if this method is overridden, it is important for the subclass method to call super(), unless it overrides decode as well.

Overrides:

beginDecoding in class TIFFDecompressor

decodeRaw

public void decodeRaw(byte[] b,
             int dstOffset,
             int bitsPerPixel,
             int scanlineStride)
               throws java.io.IOException

Description copied from class: TIFFDecompressor

Decodes the source data into the provided byte array b, starting at the offset given by dstOffset. Each pixel occupies bitsPerPixel bits, with no padding between pixels. Scanlines are separated by scanlineStride bytes.

Specified by:

decodeRaw in class TIFFDecompressor

Parameters:

b - a byte array to be written.

dstOffset - the starting offset in b to be written.

bitsPerPixel - the number of bits for each pixel.

scanlineStride - the number of bytes to advance between that starting pixels of each scanline.

Throws:

java.io.IOException - if an error occurs reading from the source ImageInputStream.

finalize

protected void finalize()
                 throws java.lang.Throwable

Overrides:

finalize in class java.lang.Object

Throws:

java.lang.Throwable