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java.lang.Object | +--erkka.PngEncoder | +--erkka.PngEncoderB
Field Summary | |
protected java.awt.image.BufferedImage |
image
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protected int |
tType
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protected java.awt.image.WritableRaster |
wRaster
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Fields inherited from class erkka.PngEncoder |
bytePos, bytesPerPixel, compressionLevel, crc, crcValue, dataPos, ENCODE_ALPHA, encodeAlpha, endPos, filter, FILTER_LAST, FILTER_NONE, FILTER_SUB, FILTER_UP, hdrPos, height, leftBytes, maxPos, NO_ALPHA, pngBytes, priorRow, width |
Constructor Summary | |
PngEncoderB()
Class constructor |
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PngEncoderB(java.awt.image.BufferedImage image)
Class constructor specifying BufferedImage to encode, with no alpha channel encoding. |
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PngEncoderB(java.awt.image.BufferedImage image,
boolean encodeAlpha)
Class constructor specifying BufferedImage to encode, and whether to encode alpha. |
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PngEncoderB(java.awt.image.BufferedImage image,
boolean encodeAlpha,
int whichFilter)
Class constructor specifying BufferedImage to encode, whether to encode alpha, and filter to use. |
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PngEncoderB(java.awt.image.BufferedImage image,
boolean encodeAlpha,
int whichFilter,
int compLevel)
Class constructor specifying BufferedImage source to encode, whether to encode alpha, filter to use, and compression level |
Method Summary | |
protected boolean |
establishStorageInfo()
Get and set variables that determine how picture is stored. |
byte[] |
pngEncode()
Creates an array of bytes that is the PNG equivalent of the current image. |
byte[] |
pngEncode(boolean encodeAlpha)
Creates an array of bytes that is the PNG equivalent of the current image, specifying whether to encode alpha or not. |
void |
setImage(java.awt.image.BufferedImage image)
Set the BufferedImage to be encoded |
protected void |
writeHeader()
Write a PNG "IHDR" chunk into the pngBytes array. |
protected boolean |
writeImageData()
Write the image data into the pngBytes array. |
protected void |
writePalette(java.awt.image.IndexColorModel icm)
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Methods inherited from class erkka.PngEncoder |
filterSub, filterUp, getCompressionLevel, getEncodeAlpha, getFilter, resizeByteArray, setCompressionLevel, setEncodeAlpha, setFilter, setImage, writeByte, writeBytes, writeBytes, writeEnd, writeInt2, writeInt4, writeString |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
protected java.awt.image.BufferedImage image
protected java.awt.image.WritableRaster wRaster
protected int tType
Constructor Detail |
public PngEncoderB()
public PngEncoderB(java.awt.image.BufferedImage image)
image
- A Java BufferedImage objectpublic PngEncoderB(java.awt.image.BufferedImage image, boolean encodeAlpha)
image
- A Java BufferedImage objectencodeAlpha
- Encode the alpha channel? false=no; true=yespublic PngEncoderB(java.awt.image.BufferedImage image, boolean encodeAlpha, int whichFilter)
image
- A Java BufferedImage objectencodeAlpha
- Encode the alpha channel? false=no; true=yeswhichFilter
- 0=none, 1=sub, 2=uppublic PngEncoderB(java.awt.image.BufferedImage image, boolean encodeAlpha, int whichFilter, int compLevel)
image
- A Java BufferedImage objectencodeAlpha
- Encode the alpha channel? false=no; true=yeswhichFilter
- 0=none, 1=sub, 2=upcompLevel
- 0..9Method Detail |
public void setImage(java.awt.image.BufferedImage image)
public byte[] pngEncode(boolean encodeAlpha)
pngEncode
in class PngEncoder
encodeAlpha
- boolean false=no alpha, true=encode alpha
public byte[] pngEncode()
pngEncode
in class PngEncoder
protected boolean establishStorageInfo()
protected void writeHeader()
writeHeader
in class PngEncoder
protected void writePalette(java.awt.image.IndexColorModel icm)
protected boolean writeImageData()
writeImageData
in class PngEncoder
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