Class TIFFT4Compressor
- java.lang.Object
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- com.github.jaiimageio.plugins.tiff.TIFFCompressor
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- com.github.jaiimageio.impl.plugins.tiff.TIFFFaxCompressor
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- com.github.jaiimageio.impl.plugins.tiff.TIFFT4Compressor
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public class TIFFT4Compressor extends TIFFFaxCompressor
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Field Summary
Fields Modifier and Type Field Description private boolean
is1DMode
private boolean
isEOLAligned
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Fields inherited from class com.github.jaiimageio.impl.plugins.tiff.TIFFFaxCompressor
bits, BLACK, byteTable, horz, horzMode, inverseFill, makeupCodes, makeupCodesBlack, makeupCodesWhite, ndex, pass, passMode, termCodes, termCodesBlack, termCodesWhite, vert, vertMode, WHITE
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Fields inherited from class com.github.jaiimageio.plugins.tiff.TIFFCompressor
compressionTagValue, compressionType, isCompressionLossless, metadata, stream, writer
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Constructor Summary
Constructors Constructor Description TIFFT4Compressor()
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description int
encode(byte[] b, int off, int width, int height, int[] bitsPerSample, int scanlineStride)
Encodes the supplied image data, writing to the currently setImageOutputStream
.int
encodeT4(boolean is1DMode, boolean isEOLAligned, byte[] data, int lineStride, int colOffset, int width, int height, byte[] compData)
Encode a buffer of data using CCITT T.4 Compression also known as Group 3 facsimile compression.void
setMetadata(javax.imageio.metadata.IIOMetadata metadata)
Sets the value of themetadata
field.-
Methods inherited from class com.github.jaiimageio.impl.plugins.tiff.TIFFFaxCompressor
add1DBits, add2DBits, addEOFB, addEOL, encode1D, initBitBuf, nextState
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Methods inherited from class com.github.jaiimageio.plugins.tiff.TIFFCompressor
dispose, getCompressionTagValue, getCompressionType, getMetadata, getStream, getWriter, isCompressionLossless, setStream, setWriter
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Method Detail
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setMetadata
public void setMetadata(javax.imageio.metadata.IIOMetadata metadata)
Sets the value of themetadata
field.The implementation in this class also sets local options from the T4_OPTIONS field if it exists, and if it doesn't, adds it with default values.
- Overrides:
setMetadata
in classTIFFFaxCompressor
- Parameters:
metadata
- theIIOMetadata
object for the image being written.- See Also:
TIFFCompressor.getMetadata()
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encodeT4
public int encodeT4(boolean is1DMode, boolean isEOLAligned, byte[] data, int lineStride, int colOffset, int width, int height, byte[] compData)
Encode a buffer of data using CCITT T.4 Compression also known as Group 3 facsimile compression.- Parameters:
is1DMode
- Whether to perform one-dimensional encoding.isEOLAligned
- Whether EOL bit sequences should be padded.data
- The row of data to compress.lineStride
- Byte step between the same sample in different rows.colOffset
- Bit offset within firstdata[rowOffset]
.width
- Number of bits in the row.height
- Number of rows in the buffer.compData
- The compressed data.- Returns:
- The number of bytes saved in the compressed data array.
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encode
public int encode(byte[] b, int off, int width, int height, int[] bitsPerSample, int scanlineStride) throws java.io.IOException
Description copied from class:TIFFCompressor
Encodes the supplied image data, writing to the currently setImageOutputStream
.- Specified by:
encode
in classTIFFCompressor
- Parameters:
b
- an array ofbyte
s containing the packed but uncompressed image data.off
- the starting offset of the data to be written in the arrayb
.width
- the width of the rectangle of pixels to be written.height
- the height of the rectangle of pixels to be written.bitsPerSample
- an array ofint
s indicting the number of bits used to represent each image sample within a pixel.scanlineStride
- the number of bytes separating each row of the input data.- Returns:
- the number of bytes written.
- Throws:
java.io.IOException
- if the supplied data cannot be encoded by thisTIFFCompressor
, or if any I/O error occurs during writing.
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