Some utility static methods for internal use. More...

Static Public Member Functions
static CRC32	GetCRC ()
	thread-singleton crc engine

static int	DoubleToInt100000 (double d)

static double	IntToDouble100000 (int i)

static void	WriteInt2 (Stream os, int n)

static int	ReadInt2 (Stream mask0)
	-1 si eof

static int	ReadInt4 (Stream mask0)
	-1 si eof

static int	ReadInt1fromByte (byte[] b, int offset)

static int	ReadInt2fromBytes (byte[] b, int offset)

static int	ReadInt4fromBytes (byte[] b, int offset)

static void	WriteInt2tobytes (int n, byte[] b, int offset)

static void	WriteInt4tobytes (int n, byte[] b, int offset)

static void	WriteInt4 (Stream os, int n)

static void	ReadBytes (Stream mask0, byte[] b, int offset, int len)
	guaranteed to read exactly len bytes. throws error if it cant

static void	SkipBytes (Stream ist, int len)

static void	WriteBytes (Stream os, byte[] b)

static void	WriteBytes (Stream os, byte[] b, int offset, int n)

static int	ReadByte (Stream mask0)

static void	WriteByte (Stream os, byte b)

static int	UnfilterRowPaeth (int r, int a, int b, int c)

static int	FilterPaethPredictor (int a, int b, int c)

static void	Logdebug (String msg)

static void	InitCrcForTests (PngReader pngr)

static long	GetCrctestVal (PngReader pngr)

Static Public Attributes
static readonly byte[]	PNG_ID_SIGNATURE = { 256 - 119, 80, 78, 71, 13, 10, 26, 10 }

static Encoding	charsetLatin1 = System.Text.Encoding.GetEncoding("ISO-8859-1")

static Encoding	charsetUtf8 = System.Text.Encoding.GetEncoding("UTF-8")

static bool	DEBUG = false

Detailed Description

Some utility static methods for internal use.

Member Function Documentation

static CRC32 Hjg.Pngcs.PngHelperInternal.GetCRC ( )

static

thread-singleton crc engine

static int Hjg.Pngcs.PngHelperInternal.DoubleToInt100000 ( double d )

static

static double Hjg.Pngcs.PngHelperInternal.IntToDouble100000 ( int i )

static

static void Hjg.Pngcs.PngHelperInternal.WriteInt2	(	Stream	os,
		int	n
	)

static

static int Hjg.Pngcs.PngHelperInternal.ReadInt2 ( Stream mask0 )

static

-1 si eof

static int Hjg.Pngcs.PngHelperInternal.ReadInt4 ( Stream mask0 )

static

-1 si eof

static int Hjg.Pngcs.PngHelperInternal.ReadInt1fromByte	(	byte[]	b,
		int	offset
	)

static

static int Hjg.Pngcs.PngHelperInternal.ReadInt2fromBytes	(	byte[]	b,
		int	offset
	)

static

static int Hjg.Pngcs.PngHelperInternal.ReadInt4fromBytes	(	byte[]	b,
		int	offset
	)

static

static void Hjg.Pngcs.PngHelperInternal.WriteInt2tobytes	(	int	n,
		byte[]	b,
		int	offset
	)

static

static void Hjg.Pngcs.PngHelperInternal.WriteInt4tobytes	(	int	n,
		byte[]	b,
		int	offset
	)

static

static void Hjg.Pngcs.PngHelperInternal.WriteInt4	(	Stream	os,
		int	n
	)

static

static void Hjg.Pngcs.PngHelperInternal.ReadBytes	(	Stream	mask0,
		byte[]	b,
		int	offset,
		int	len
	)

static

guaranteed to read exactly len bytes. throws error if it cant

static void Hjg.Pngcs.PngHelperInternal.SkipBytes	(	Stream	ist,
		int	len
	)

static

static void Hjg.Pngcs.PngHelperInternal.WriteBytes	(	Stream	os,
		byte[]	b
	)

static

static void Hjg.Pngcs.PngHelperInternal.WriteBytes	(	Stream	os,
		byte[]	b,
		int	offset,
		int	n
	)

static

static int Hjg.Pngcs.PngHelperInternal.ReadByte ( Stream mask0 )

static

static void Hjg.Pngcs.PngHelperInternal.WriteByte	(	Stream	os,
		byte	b
	)

static

static int Hjg.Pngcs.PngHelperInternal.UnfilterRowPaeth	(	int	r,
		int	a,
		int	b,
		int	c
	)

static

static int Hjg.Pngcs.PngHelperInternal.FilterPaethPredictor	(	int	a,
		int	b,
		int	c
	)

static

static void Hjg.Pngcs.PngHelperInternal.Logdebug ( String msg )

static

static void Hjg.Pngcs.PngHelperInternal.InitCrcForTests ( PngReader pngr )

static

static long Hjg.Pngcs.PngHelperInternal.GetCrctestVal ( PngReader pngr )

static

Member Data Documentation

readonly byte [] Hjg.Pngcs.PngHelperInternal.PNG_ID_SIGNATURE = { 256 - 119, 80, 78, 71, 13, 10, 26, 10 }

static

Encoding Hjg.Pngcs.PngHelperInternal.charsetLatin1 = System.Text.Encoding.GetEncoding("ISO-8859-1")

static

Encoding Hjg.Pngcs.PngHelperInternal.charsetUtf8 = System.Text.Encoding.GetEncoding("UTF-8")

static

bool Hjg.Pngcs.PngHelperInternal.DEBUG = false

static

Static Public Member Functions

Static Public Attributes

Detailed Description

Member Function Documentation

Member Data Documentation