Package com.github.luben.zstd

Class ZstdInputStreamNoFinalizer

java.lang.Object

java.io.InputStream

java.io.FilterInputStream

com.github.luben.zstd.ZstdInputStreamNoFinalizer

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

public class ZstdInputStreamNoFinalizer
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. It also does not have finalizer, so if you rely on finalizers to clean the native memory and release buffers use `ZstdInputStream` instead.

Field Summary

Fields

Modifier and Type	Field	Description
private BufferPool	bufferPool
private long	dstPos
private boolean	frameFinished
private boolean	isClosed
private boolean	isContinuous
private boolean	needRead
private byte[]	src
private static int	srcBuffSize
private java.nio.ByteBuffer	srcByteBuffer
private long	srcPos
private long	srcSize
private long	stream

Fields inherited from class java.io.FilterInputStream

in

Constructor Summary

Constructors

Constructor	Description
ZstdInputStreamNoFinalizer(java.io.InputStream inStream)	create a new decompressing InputStream
ZstdInputStreamNoFinalizer(java.io.InputStream inStream, BufferPool bufferPool)	create a new decompressing InputStream

Method Summary

Modifier and Type	Method	Description
int	available()
void	close()
private static long	createDStream()
private int	decompressStream(long stream, byte[] dst, int dst_size, byte[] src, int src_size)
private static int	freeDStream(long stream)
boolean	getContinuous()
private int	initDStream(long stream)
boolean	markSupported()
int	read()
int	read(byte[] dst, int offset, int len)
(package private) int	readInternal(byte[] dst, int offset, int len)
static long	recommendedDInSize()
static long	recommendedDOutSize()
ZstdInputStreamNoFinalizer	setContinuous(boolean b)	Don't break on unfinished frames Use case: decompressing files that are not yet finished writing and compressing
ZstdInputStreamNoFinalizer	setDict(byte[] dict)
ZstdInputStreamNoFinalizer	setDict(ZstdDictDecompress dict)
ZstdInputStreamNoFinalizer	setLongMax(int windowLogMax)
long	skip(long numBytes)

Methods inherited from class java.io.FilterInputStream

mark, read, reset

Methods inherited from class java.io.InputStream

nullInputStream, readAllBytes, readNBytes, readNBytes, transferTo

Methods inherited from class java.lang.Object

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

Field Detail

stream

private final long stream

dstPos

private long dstPos

srcPos

private long srcPos

srcSize

private long srcSize

needRead

private boolean needRead

bufferPool

private final BufferPool bufferPool

srcByteBuffer

private final java.nio.ByteBuffer srcByteBuffer

src

private final byte[] src

srcBuffSize

private static final int srcBuffSize

isContinuous

private boolean isContinuous

frameFinished

private boolean frameFinished

isClosed

private boolean isClosed

Constructor Detail

ZstdInputStreamNoFinalizer

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

create a new decompressing InputStream

Parameters:

inStream - the stream to wrap

Throws:

java.io.IOException

ZstdInputStreamNoFinalizer

public ZstdInputStreamNoFinalizer(java.io.InputStream inStream,
                                  BufferPool bufferPool)
                           throws java.io.IOException

create a new decompressing InputStream

Parameters:

inStream - the stream to wrap

bufferPool - the pool to fetch and return buffers

Throws:

java.io.IOException

Method Detail

recommendedDInSize

public static long recommendedDInSize()

recommendedDOutSize

public static long recommendedDOutSize()

createDStream

private static long createDStream()

freeDStream

private static int freeDStream(long stream)

initDStream

private int initDStream(long stream)

decompressStream

private int decompressStream(long stream,
                             byte[] dst,
                             int dst_size,
                             byte[] src,
                             int src_size)

setContinuous

public ZstdInputStreamNoFinalizer setContinuous(boolean b)

Don't break on unfinished frames Use case: decompressing files that are not yet finished writing and compressing

getContinuous

public boolean getContinuous()

setDict

public ZstdInputStreamNoFinalizer setDict(byte[] dict)
                                   throws java.io.IOException

Throws:

java.io.IOException

setDict

public ZstdInputStreamNoFinalizer setDict(ZstdDictDecompress dict)
                                   throws java.io.IOException

Throws:

java.io.IOException

setLongMax

public ZstdInputStreamNoFinalizer setLongMax(int windowLogMax)
                                      throws java.io.IOException

Throws:

java.io.IOException

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

readInternal

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

Throws:

java.io.IOException

read

public int read()
         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 numBytes)
          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.lang.AutoCloseable

Specified by:

close in interface java.io.Closeable

Overrides:

close in class java.io.FilterInputStream

Throws:

java.io.IOException