nativewebp

May 10, 2026

Changes in this version

+ const MAX_HUFFMAN_BITS

+ const MAX_HUFF_IMAGE_SIZE

+ const MIN_HUFFMAN_BITS

+ const NUM_HUFFMAN_BITS

+ type CompressionLevel int

+ const BestCompression

+ const BestSpeed

+ const DefaultCompression

type Options

+ CompressionLevel CompressionLevel

Apr 27, 2025

Changes in this version

+ func EncodeAll(w io.Writer, ani *Animation, o *Options) error

+ type Animation struct

+ BackgroundColor uint32

+ Disposals []uint

+ Durations []uint

+ Images []image.Image

+ LoopCount uint16

Mar 12, 2025

Changes in this version

+ func DecodeIgnoreAlphaFlag(r io.Reader) (image.Image, error)

Mar 9, 2025

Changes in this version

+ func EncodeVP8L(img image.Image, o *Options) (*bytes.Buffer, bool, error)

type Options

+ UseExtendedFormat bool

Feb 22, 2025

Changes in this version

+ func Decode(r io.Reader) (image.Image, error)

+ func DecodeConfig(r io.Reader) (image.Config, error)

Feb 11, 2025

Changes in this version

+ type Options struct

Jan 4, 2025

Changes in this version

+ const TransformColorIndexing

Dec 25, 2024

Changes in this version

+ const TransformPredict

+ const TransformSubGreen

+ func ApplyPredictTransform(pixels []color.NRGBA, width, height int) (int, []color.NRGBA)

+ func ApplySubtractGreenTransform(pixels []color.NRGBA)

+ func Encode(w io.Writer, img image.Image) error

+ func WriteBitStreamData(w *BitWriter, img image.Image, colorCacheBits int, transforms [4]bool) error

+ func WriteImageData(w *BitWriter, pixels []color.NRGBA, isRecursive bool, colorCacheBits int)

+ type BitWriter struct

+ BitBuffer uint64

+ BitBufferSize int

+ Buffer *bytes.Buffer

+ func (w *BitWriter) AlignByte()

+ func (w *BitWriter) WriteBits(value uint64, n int)

+ func (w *BitWriter) WriteCode(code HuffmanCode)

+ type HuffmanCode struct

+ Bits int

+ Depth int

+ Symbol int

+ type Node struct

+ BranchLeft *Node

+ BranchRight *Node

+ IsBranch bool

+ Symbol int

+ Weight int

+ type NodeHeap []*Node

+ func (h *NodeHeap) Pop() interface{}

+ func (h *NodeHeap) Push(x interface{})

+ func (h NodeHeap) Len() int

+ func (h NodeHeap) Less(i, j int) bool

+ func (h NodeHeap) Swap(i, j int)

+ type Transform int