JOGL 2.3.2 · jogamp.opengl.util.pngj.PngHelperInternal

Modifier and Type	Field and Description
public static final Charset	charsetLatin1 Default charset, used internally by PNG for several things
public static final Charset	charsetUTF8 UTF-8 is only used for some chunks
private static final ThreadLocal<CRC32>	crcProvider
pack-priv static final boolean	DEBUG

Access	Constructor and Description
public	PngHelperInternal()

Method Summary

Modifier and Type	Method and Description
public static int	doubleToInt100000(final double d)
pack-priv static final int	filterPaethPredictor(final int a, final int b, final int c)
public static int	filterRowAverage(final int r, final int left, final int up)
public static int	filterRowNone(final int r)
public static int	filterRowPaeth(final int r, final int left, final int up, final int upleft)
public static int	filterRowSub(final int r, final int left)
public static int	filterRowUp(final int r, final int up)
public static CRC32	getCRC() thread-singleton crc engine
public static final long	getCrctestVal(final PngReader pngr)
public static byte[]	getPngIdSignature() PNG magic bytes
public static final void	initCrcForTests(final PngReader pngr)
public static double	intToDouble100000(final int i)
public static void	logdebug(final String msg)
public static int	readByte(final InputStream is)
public static void	readBytes(final InputStream is, final byte[] b, final int offset, final int len) guaranteed to read exactly len bytes.
public static int	readInt1fromByte(final byte[] b, final int offset)
public static int	readInt2(final InputStream is) -1 if eof PNG uses "network byte order"
public static int	readInt2fromBytes(final byte[] b, final int offset)
public static int	readInt4(final InputStream is) -1 if eof
public static int	readInt4fromBytes(final byte[] b, final int offset)
public static void	skipBytes(final InputStream is, long len)
public static int	unfilterRowAverage(final int r, final int left, final int up)
public static int	unfilterRowNone(final int r)
public static int	unfilterRowPaeth(final int r, final int left, final int up, final int upleft)
public static int	unfilterRowSub(final int r, final int left)
public static int	unfilterRowUp(final int r, final int up)
public static void	writeByte(final OutputStream os, final byte b)
public static void	writeBytes(final OutputStream os, final byte[] b)
public static void	writeBytes(final OutputStream os, final byte[] b, final int offset, final int n)
public static void	writeInt2(final OutputStream os, final int n)
public static void	writeInt2tobytes(final int n, final byte[] b, final int offset)
public static void	writeInt4(final OutputStream os, final int n)
public static void	writeInt4tobytes(final int n, final byte[] b, final int offset)

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

charsetLatin1	back to summary
public static final Charset charsetLatin1 Default charset, used internally by PNG for several things

charsetUTF8	back to summary
public static final Charset charsetUTF8 UTF-8 is only used for some chunks

crcProvider	back to summary
private static final ThreadLocal<CRC32> crcProvider

DEBUG	back to summary
pack-priv static final boolean DEBUG

PngHelperInternal	back to summary
public PngHelperInternal()

Method Detail

doubleToInt100000	back to summary
public static int doubleToInt100000(final double d)

filterPaethPredictor	back to summary
pack-priv static final int filterPaethPredictor(final int a, final int b, final int c)

filterRowAverage	back to summary
public static int filterRowAverage(final int r, final int left, final int up)

filterRowNone	back to summary
public static int filterRowNone(final int r)

filterRowPaeth	back to summary
public static int filterRowPaeth(final int r, final int left, final int up, final int upleft)

filterRowSub	back to summary
public static int filterRowSub(final int r, final int left)

filterRowUp	back to summary
public static int filterRowUp(final int r, final int up)

getCRC	back to summary
public static CRC32 getCRC() thread-singleton crc engine

getCrctestVal	back to summary
public static final long getCrctestVal(final PngReader pngr)

getPngIdSignature	back to summary
public static byte[] getPngIdSignature() PNG magic bytes

initCrcForTests	back to summary
public static final void initCrcForTests(final PngReader pngr)

intToDouble100000	back to summary
public static double intToDouble100000(final int i)

logdebug	back to summary
public static void logdebug(final String msg)

readByte	back to summary
public static int readByte(final InputStream is)

readBytes	back to summary
public static void readBytes(final InputStream is, final byte[] b, final int offset, final int len) guaranteed to read exactly len bytes. throws error if it can't

readInt1fromByte	back to summary
public static int readInt1fromByte(final byte[] b, final int offset)

readInt2	back to summary
public static int readInt2(final InputStream is) -1 if eof PNG uses "network byte order"

readInt2fromBytes	back to summary
public static int readInt2fromBytes(final byte[] b, final int offset)

readInt4	back to summary
public static int readInt4(final InputStream is) -1 if eof

readInt4fromBytes	back to summary
public static int readInt4fromBytes(final byte[] b, final int offset)

skipBytes	back to summary
public static void skipBytes(final InputStream is, long len)

unfilterRowAverage	back to summary
public static int unfilterRowAverage(final int r, final int left, final int up)

unfilterRowNone	back to summary
public static int unfilterRowNone(final int r)

unfilterRowPaeth	back to summary
public static int unfilterRowPaeth(final int r, final int left, final int up, final int upleft)

unfilterRowSub	back to summary
public static int unfilterRowSub(final int r, final int left)

unfilterRowUp	back to summary
public static int unfilterRowUp(final int r, final int up)

writeByte	back to summary
public static void writeByte(final OutputStream os, final byte b)

writeBytes	back to summary
public static void writeBytes(final OutputStream os, final byte[] b)

writeBytes	back to summary
public static void writeBytes(final OutputStream os, final byte[] b, final int offset, final int n)

writeInt2	back to summary
public static void writeInt2(final OutputStream os, final int n)

writeInt2tobytes	back to summary
public static void writeInt2tobytes(final int n, final byte[] b, final int offset)

writeInt4	back to summary
public static void writeInt4(final OutputStream os, final int n)

writeInt4tobytes	back to summary
public static void writeInt4tobytes(final int n, final byte[] b, final int offset)

public Class PngHelperInternal

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail