Class TransparencyFilter
- java.lang.Object
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- org.apache.commons.imaging.common.BinaryFileParser
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- org.apache.commons.imaging.formats.png.transparencyfilters.TransparencyFilter
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- Direct Known Subclasses:
TransparencyFilterGrayscale
,TransparencyFilterIndexedColor
,TransparencyFilterTrueColor
public abstract class TransparencyFilter extends BinaryFileParser
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Field Summary
Fields Modifier and Type Field Description private byte[]
bytes
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Constructor Summary
Constructors Constructor Description TransparencyFilter(byte[] bytes)
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Method Summary
All Methods Instance Methods Abstract Methods Concrete Methods Modifier and Type Method Description abstract int
filter(int rgb, int index)
byte
getByte(int offset)
int
getLength()
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Methods inherited from class org.apache.commons.imaging.common.BinaryFileParser
debugNumber, debugNumber, getByteOrder, setByteOrder
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Method Detail
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filter
public abstract int filter(int rgb, int index) throws ImageReadException, java.io.IOException
- Throws:
ImageReadException
java.io.IOException
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getByte
public byte getByte(int offset)
- Returns:
- a byte
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getLength
public int getLength()
- Returns:
- the length
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