Why Go
- Case Studies
  
  Common problems companies solve with Go
- Use Cases
  
  Stories about how and why companies use Go
- Security Policy
  
  How Go can help keep you secure by default
Learn
Docs
- Effective Go
  
  Tips for writing clear, performant, and idiomatic Go code
- Go User Manual
  
  A complete introduction to building software with Go
- Standard library
  
  Reference documentation for Go's standard library
- Release Notes
  
  Learn what's new in each Go release
Packages
Community
- Recorded Talks
  
  Videos from prior events
- Meetups
  
  Meet other local Go developers
- Conferences
  
  Learn and network with Go developers from around the world
- Go blog
  
  The Go project's official blog.
- Go project
  
  Get help and stay informed from Go
- Get connected

compression

package

Go to main page

Versions in this module

v1

v1.10.1

Feb 22, 2024

v1.10.0

Jan 28, 2024

v1.9.0

Oct 9, 2023

v1.8.0

Aug 21, 2021

Changes in this version

+ type TilePaletteKey struct

+ func TilePaletteKeyFrom(colors []byte) TilePaletteKey

+ func (key *TilePaletteKey) Buffer() []byte

+ func (key *TilePaletteKey) Contains(other *TilePaletteKey) bool

+ func (key *TilePaletteKey) HasColor(index byte) bool

+ func (key *TilePaletteKey) LessThan(other *TilePaletteKey) bool

+ func (key *TilePaletteKey) UseColor(index byte)

+ func (key *TilePaletteKey) Without(other *TilePaletteKey) TilePaletteKey

v1.7.0

Dec 28, 2020

v1.6.0

Oct 17, 2020

v1.5.0

Aug 29, 2020

v1.4.2

Jun 16, 2020

v1.4.1

Jun 15, 2020

v1.4.0

Apr 21, 2020

Changes in this version

+ const ControlWordParamLimit

+ const CtrlColorTile16ColorsMasked

+ const CtrlColorTile2ColorsMasked

+ const CtrlColorTile2ColorsStatic

+ const CtrlColorTile4ColorsMasked

+ const CtrlColorTile8ColorsMasked

+ const CtrlRepeatPrevious

+ const CtrlSkip

+ const CtrlUnknown

+ const PixelPerTile

+ const TileSideLength

+ var ErrFormat = fmt.Errorf("format Error")

+ func PackControlWords(words []ControlWord) []byte

+ type BitstreamReader struct

+ func NewBitstreamReader(data []byte) *BitstreamReader

+ func (reader *BitstreamReader) Advance(bits int)

+ func (reader *BitstreamReader) Exhausted() bool

+ func (reader *BitstreamReader) Read(bits int) (result uint32)

+ type BitstreamWriter struct

+ func (w *BitstreamWriter) Write(bits uint, value uint32)

+ func (w BitstreamWriter) Buffer() []byte

+ type ControlType byte

+ type ControlWord uint32

+ func ControlWordOf(count int, controlType ControlType, param uint32) ControlWord

+ func LongOffsetOf(offset uint32) ControlWord

+ func UnpackControlWords(data []byte) (words []ControlWord, err error)

+ func (word ControlWord) Count() int

+ func (word ControlWord) IsLongOffset() bool

+ func (word ControlWord) LongOffset() uint32

+ func (word ControlWord) Packed(times int) PackedControlWord

+ func (word ControlWord) Parameter() uint32

+ func (word ControlWord) Type() ControlType

+ type ControlWordSequence struct

+ HTiles uint32

+ func (seq ControlWordSequence) BitstreamFor(ops []TileColorOp) ([]byte, error)

+ func (seq ControlWordSequence) ControlWords() []ControlWord

+ type ControlWordSequencer struct

+ BitstreamIndexLimit uint32

+ DirectIndexLimit uint32

+ func (seq *ControlWordSequencer) Add(op TileColorOp) error

+ func (seq ControlWordSequencer) Sequence() (ControlWordSequence, error)

+ type EncodedFrame struct

+ Bitstream []byte

+ Maskstream []byte

+ type FrameDecoder struct

+ func (decoder *FrameDecoder) Decode(bitstreamData []byte, maskstreamData []byte) error

+ type FrameDecoderBuilder struct

+ func NewFrameDecoderBuilder(width, height int) *FrameDecoderBuilder

+ func (builder *FrameDecoderBuilder) Build() *FrameDecoder

+ func (builder *FrameDecoderBuilder) ForStandardFrame(frame []byte, stride int)

+ func (builder *FrameDecoderBuilder) WithControlWords(words []ControlWord)

+ func (builder *FrameDecoderBuilder) WithPaletteLookupList(list []byte)

+ type MaskstreamReader struct

+ func NewMaskstreamReader(source []byte) *MaskstreamReader

+ func (reader *MaskstreamReader) Read(bytes int) (value uint64)

+ type MaskstreamWriter struct

+ Buffer []byte

+ func (w *MaskstreamWriter) Write(byteCount uint, mask uint64) error

+ type PackedControlWord uint32

+ func (packed PackedControlWord) Times() int

+ func (packed PackedControlWord) Value() ControlWord

+ type PaletteLookup struct

+ func (lookup *PaletteLookup) Buffer() []byte

+ func (lookup *PaletteLookup) Lookup(tile tileDelta) (index int, pal []byte, mask uint64)

+ type PaletteLookupGenerator struct

+ func (gen *PaletteLookupGenerator) Add(delta tileDelta)

+ func (gen *PaletteLookupGenerator) Generate(ctx context.Context) (PaletteLookup, error)

+ type SceneEncoder struct

+ func NewSceneEncoder(width, height int) *SceneEncoder

+ func (e *SceneEncoder) AddFrame(frame []byte) error

+ func (e *SceneEncoder) Encode(ctx context.Context) (words []ControlWord, paletteLookupBuffer []byte, frames []EncodedFrame, ...)

+ type TileColorFunction func(hTile int, vTile int, lookupArray []byte, mask uint64, indexBitSize uint64)

+ func StandardTileColorer(frame []byte, stride int) TileColorFunction

+ type TileColorOp struct

+ Offset uint32

+ Type ControlType