com.github.luben.zstd

Class ZstdInputStream

java.lang.Object

java.io.InputStream

java.io.FilterInputStream

com.github.luben.zstd.ZstdInputStream

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

Direct Known Subclasses:

ZstdContinuousInputStream

public class ZstdInputStream
extends java.io.FilterInputStream

InputStream filter that decompresses the data provided by the underlying InputStream using Zstd compression. It does not support mark/reset methods

Field Summary

Fields

Modifier and Type	Field and Description
protected int	blockSize
protected long	ctx
protected byte[]	iBuff
protected com.github.luben.zstd.ZstdLegacyInputStream	legacy
protected static int	MAGIC_BASE
protected java.nio.ByteBuffer	oBuff
protected int	oBuffSize
protected int	oEnd
protected int	oPos

Fields inherited from class java.io.FilterInputStream

in

Constructor Summary

Constructors

Constructor and Description
ZstdInputStream(java.io.InputStream inStream)

Method Summary

Modifier and Type	Method and Description
int	available()
void	close()
protected static long	createDCtx()
protected static int	decompressBegin(long ctx)
protected static int	decompressContinue(long ctx, java.nio.ByteBuffer dst, long dstOffset, long dstSize, byte[] src, long srcOffset, long srcSize)
protected static int	findBlockSize(byte[] src, long srcSize)
protected static int	findOBuffSize(byte[] src, long srcSize)
protected static int	freeDCtx(long ctx)
boolean	markSupported()
protected static int	nextSrcSizeToDecompress(long ctx)
int	read(byte[] dst, int offset, int len)
long	skip(long n)

Methods inherited from class java.io.FilterInputStream

mark, read, read, reset

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

ctx

protected long ctx

blockSize

protected int blockSize

oBuffSize

protected int oBuffSize

oBuff

protected java.nio.ByteBuffer oBuff

oPos

protected int oPos

oEnd

protected int oEnd

iBuff

protected byte[] iBuff

MAGIC_BASE

protected static final int MAGIC_BASE

See Also:

Constant Field Values

legacy

protected com.github.luben.zstd.ZstdLegacyInputStream legacy

Constructor Detail

ZstdInputStream

public ZstdInputStream(java.io.InputStream inStream)
                throws java.io.IOException

Throws:

java.io.IOException

Method Detail

createDCtx

protected static long createDCtx()

decompressBegin

protected static int decompressBegin(long ctx)

freeDCtx

protected static int freeDCtx(long ctx)

findBlockSize

protected static int findBlockSize(byte[] src,
                                   long srcSize)

findOBuffSize

protected static int findOBuffSize(byte[] src,
                                   long srcSize)

nextSrcSizeToDecompress

protected static int nextSrcSizeToDecompress(long ctx)

decompressContinue

protected static int decompressContinue(long ctx,
                                        java.nio.ByteBuffer dst,
                                        long dstOffset,
                                        long dstSize,
                                        byte[] src,
                                        long srcOffset,
                                        long srcSize)

read

public int read(byte[] dst,
                int offset,
                int len)
         throws java.io.IOException

Overrides:

read in class java.io.FilterInputStream

Throws:

java.io.IOException

available

public int available()
              throws java.io.IOException

Overrides:

available in class java.io.FilterInputStream

Throws:

java.io.IOException

markSupported

public boolean markSupported()

Overrides:

markSupported in class java.io.FilterInputStream

skip

public long skip(long n)
          throws java.io.IOException

Overrides:

skip in class java.io.FilterInputStream

Throws:

java.io.IOException

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Overrides:

close in class java.io.FilterInputStream

Throws:

java.io.IOException