Lz4Encoder class
The Lz4Encoder encoder is used to lz4 compress data.
Constructors
- Lz4Encoder({int level = Lz4Option.defaultLevel, bool fastAcceleration = false, bool contentChecksum = false, bool blockChecksum = false, bool blockLinked = true, int blockSize = Lz4Option.defaultBlockSize, bool optimizeForDecompression = false, int inputBufferLength = lz4EncoderInputBufferLength, int outputBufferLength = lz4EncoderOutputBufferLength})
- Construct an Lz4Encoder with the supplied parameters used by the Lz4 encoder.
Properties
- blockChecksum → bool
-
When true, a checksum is added to the end of each block during
compression, and validates the block data during decompression.
The default value is false.
final
- blockLinked → bool
-
When true, blocks are compressed in linked mode which dramatically
improves compression, specifically for small blocks.
The default value is true.
final
- blockSize → int
-
The maximum size to use for blocks. The larger the block, the (slightly)
better compression ratio. However, more memory is consumed for both
compression and decompression. The default value is blockSize64KB.
final
- contentChecksum → bool
-
When true, a checksum is added to the end of a frame during compression,
and checked during decompression. An enabled, all blocks are present and
in the correct order. The default value is false.
final
- fastAcceleration → bool
-
When true, use ultra-fast compression speed mode, at the cost of some
compression ratio. The default value is false.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- inputBufferLength → int
-
Length in bytes of the buffer used for input data.
final
- level → int
-
The compression-level can be set in the range of
0..16, with 0 (fast mode) being the default compression level.final - optimizeForDecompression → bool
-
When true, generate compress data optimized for decompression speed.
The size of the compressed data may be slightly larger, however the
decompression speed should be improved.
Note: This option will be ignored if level < 9.
final
- outputBufferLength → int
-
Length in bytes of the buffer used for processed output data.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
asByteSink(
Sink< List< sink) → ByteConversionSinkint> > -
Ensure a conversion to ByteConversionSink which provides an interface
for converters to efficiently transmit byte data.
inherited
-
bind(
Stream< List< stream) → Stream<int> >List< int> > -
Transforms the provided
stream.inherited -
cast<
RS, RT> () → Converter< RS, RT> -
Provides a
Converter<RS, RT>view of this stream transformer.inherited -
convert(
List< int> bytes) → List<int> -
Encode/Decode a List of bytes.
inherited
-
fuse<
TT> (Converter< List< other) → Converter<int> , TT>List< int> , TT> -
Fuses
thiswithother.inherited -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
performOneShotConversion(
Sink< List< sink, List<int> >int> bytes) → bool -
Subclasses may override to perform a one-shot optimized conversion of
bytesto thesink.inherited -
startChunkedConversion(
Sink< List< sink) → ByteConversionSinkint> > -
Start a chunked conversion using the options given to the Lz4Encoder
constructor.
override
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited