io.netty.handler.codec.compression

类 LzmaFrameEncoder

java.lang.Object

io.netty.channel.ChannelHandlerAdapter

io.netty.channel.ChannelOutboundHandlerAdapter

io.netty.handler.codec.MessageToByteEncoder<ByteBuf>

io.netty.handler.codec.compression.LzmaFrameEncoder

所有已实现的接口:

ChannelHandler, ChannelOutboundHandler

public class LzmaFrameEncoder
extends MessageToByteEncoder<ByteBuf>

Compresses a ByteBuf using the LZMA algorithm. See LZMA and LZMA format or documents in LZMA SDK archive.

嵌套类概要

从接口继承的嵌套类/接口 io.netty.channel.ChannelHandler

ChannelHandler.Sharable

构造器概要

构造器

构造器和说明
LzmaFrameEncoder() Creates LZMA encoder with default settings.
LzmaFrameEncoder(int dictionarySize) Creates LZMA encoder with specified dictionary size and default values of lc = , lp = , pb = .
LzmaFrameEncoder(int lc, int lp, int pb) Creates LZMA encoder with specified lc, lp, pb values and the medium dictionary size of .
LzmaFrameEncoder(int lc, int lp, int pb, int dictionarySize) Creates LZMA encoder with specified lc, lp, pb values and custom dictionary size.
LzmaFrameEncoder(int lc, int lp, int pb, int dictionarySize, boolean endMarkerMode, int numFastBytes) Creates LZMA encoder with specified settings.

方法概要

限定符和类型	方法和说明
protected ByteBuf	allocateBuffer(ChannelHandlerContext ctx, ByteBuf in, boolean preferDirect) Allocate a ByteBuf which will be used as argument of #encode(ChannelHandlerContext, I, ByteBuf).
protected void	encode(ChannelHandlerContext ctx, ByteBuf in, ByteBuf out) Encode a message into a ByteBuf.

从类继承的方法 io.netty.handler.codec.MessageToByteEncoder

acceptOutboundMessage, isPreferDirect, write

从类继承的方法 io.netty.channel.ChannelOutboundHandlerAdapter

bind, close, connect, deregister, disconnect, flush, read

从类继承的方法 io.netty.channel.ChannelHandlerAdapter

ensureNotSharable, exceptionCaught, handlerAdded, handlerRemoved, isSharable

从类继承的方法 java.lang.Object

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

从接口继承的方法 io.netty.channel.ChannelHandler

exceptionCaught, handlerAdded, handlerRemoved

构造器详细资料

LzmaFrameEncoder

public LzmaFrameEncoder()

Creates LZMA encoder with default settings.

LzmaFrameEncoder

public LzmaFrameEncoder(int lc,
                        int lp,
                        int pb)

Creates LZMA encoder with specified lc, lp, pb values and the medium dictionary size of .

LzmaFrameEncoder

public LzmaFrameEncoder(int dictionarySize)

Creates LZMA encoder with specified dictionary size and default values of lc = , lp = , pb = .

LzmaFrameEncoder

public LzmaFrameEncoder(int lc,
                        int lp,
                        int pb,
                        int dictionarySize)

Creates LZMA encoder with specified lc, lp, pb values and custom dictionary size.

LzmaFrameEncoder

public LzmaFrameEncoder(int lc,
                        int lp,
                        int pb,
                        int dictionarySize,
                        boolean endMarkerMode,
                        int numFastBytes)

Creates LZMA encoder with specified settings.

参数:

lc - the number of "literal context" bits, available values [0, 8], default value .

lp - the number of "literal position" bits, available values [0, 4], default value .

pb - the number of "position" bits, available values [0, 4], default value .

dictionarySize - available values [0, Integer.MAX_VALUE], default value is .

endMarkerMode - indicates should LzmaFrameEncoder use end of stream marker or not. Note, that LzmaFrameEncoder always sets size of uncompressed data in LZMA header, so EOS marker is unnecessary. But you may use it for better portability. For full description see "LZMA Decoding modes" section of LZMA-Specification.txt in official LZMA SDK.

numFastBytes - available values [, ].

方法详细资料

encode

protected void encode(ChannelHandlerContext ctx,
                      ByteBuf in,
                      ByteBuf out)
               throws java.lang.Exception

从类复制的说明: MessageToByteEncoder

Encode a message into a ByteBuf. This method will be called for each written message that can be handled by this encoder.

指定者:

encode 在类中 MessageToByteEncoder<ByteBuf>

参数:

ctx - the ChannelHandlerContext which this MessageToByteEncoder belongs to

in - the message to encode

out - the ByteBuf into which the encoded message will be written

抛出:

java.lang.Exception - is thrown if an error occurs

allocateBuffer

protected ByteBuf allocateBuffer(ChannelHandlerContext ctx,
                                 ByteBuf in,
                                 boolean preferDirect)
                          throws java.lang.Exception

从类复制的说明: MessageToByteEncoder

Allocate a ByteBuf which will be used as argument of #encode(ChannelHandlerContext, I, ByteBuf). Sub-classes may override this method to return ByteBuf with a perfect matching initialCapacity.

覆盖:

allocateBuffer 在类中 MessageToByteEncoder<ByteBuf>

抛出:

java.lang.Exception