it.geosolutions.imageioimpl.plugins.tiff
Class TIFFJPEGDecompressor
Object
TIFFDecompressor
TIFFJPEGDecompressor
- Direct Known Subclasses:
- TIFFOldJPEGDecompressor
public class TIFFJPEGDecompressor
- extends TIFFDecompressor
Fields inherited from class 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 |
Method Summary |
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 TIFFDecompressor |
createRawImage, decode, decodeRaw, 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 Object |
clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
SOI
protected static final int SOI
- See Also:
- Constant Field Values
EOI
protected static final int EOI
- See Also:
- Constant Field Values
JPEGReader
protected ImageReader JPEGReader
JPEGParam
protected ImageReadParam JPEGParam
hasJPEGTables
protected boolean hasJPEGTables
tables
protected byte[] tables
TIFFJPEGDecompressor
public TIFFJPEGDecompressor()
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 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
byte
s.
- 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 byte
s to
advance between that starting pixels of each scanline.
- Throws:
IOException
- if an error occurs reading from the source
ImageInputStream
.
finalize
protected void finalize()
throws Throwable
- Overrides:
finalize
in class Object
- Throws:
Throwable
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