BrotliEncoder class
The BrotliEncoder encoder is used to brotli compress data.
Constructors
- BrotliEncoder({int level = BrotliOption.defaultLevel, int mode = BrotliOption.defaultMode, int windowBits = BrotliOption.defaultWindowBits, int? blockBits, int? postfixBits, bool literalContextModeling = true, int sizeHint = 0, bool largeWindow = false, int? directDistanceCodeCount, int inputBufferLength = CodecBufferHolder.autoLength, int outputBufferLength = CodecBufferHolder.autoLength})
- Construct an BrotliEncoder with the supplied parameters used by the Brotli encoder.
Properties
- blockBits → int?
-
Recommended input block size.
Encoder may reduce this value, e.g. if the input is much smalltalk than
the input block size.
Range: BrotliOption.minBlockBits..BrotliOption.maxBlockBits.
Default: nil (dynamically computed).
final
- directDistanceCodeCount → int?
-
Recommended number of direct distance codes.
Encoder may change this value.
Default: nil (dynamically computed).
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- inputBufferLength → int
-
Length in bytes of the buffer used for input data.
final
- largeWindow → bool
-
Flag that determines if "Large Window Brotli" is used.
If set to
true, then the LZ-Window can be set up to 30-bits but the result will not be RFC7932 compliant. Default:false.final - level → int
-
The compression-level or quality can be set in the range of
BrotliOption.minLevel..BrotliOption.maxLevel.
The higher the level, the slower the compression.
Default: BrotliOption.defaultLevel.
final
- literalContextModeling → bool
-
Flag that affects usage of "literal context modeling" format feature.
This flag is a "decoding-speed vs compression ratio" trade-off.
Default:
true.final - mode → int
-
Tune the encoder for a specific input.
The allowable values are:
BrotliOption.fontMode, BrotliOption.genericMode,
BrotliOption.textMode, BrotliOption.defaultMode.
Default: BrotliOption.defaultMode.
final
- outputBufferLength → int
-
Length in bytes of the buffer used for processed output data.
final
- postfixBits → int?
-
Recommended number of postfix bits.
Encode may change this value.
Range: BrotliOption.minPostfixBits..BrotliOption.maxPostfixBits.
Default: nil (dynamically computed).
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- sizeHint → int
-
Estimated total input size for all encoding compress stream calls.
Default: 0 (means the total input size if unknown).
final
- windowBits → int
-
Recommended sliding LZ77 windows bit size.
The encoder may reduce this value if the input is much smaller than the
windows size.
Range: BrotliOption.minWindowBits..BrotliOption.maxWindowBits.
Default: BrotliOption.defaultWindowBits.
final
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 BrotliEncoder
constructor.
override
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited