decoder

package
Version: v1.0.1 Latest Latest
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Published: Aug 18, 2021 License: MIT Imports: 8 Imported by: 2

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Types

type Decoder

type Decoder struct {
	// contains filtered or unexported fields
}

Decoder stores information to decode picture

func NewDecoder

func NewDecoder(r io.Reader, options *Options) (d *Decoder, err error)

NewDecoder return new decoder instance

func (*Decoder) Decode

func (d *Decoder) Decode() (image.Image, error)

Decode picture from reader

func (*Decoder) GetFeatures

func (d *Decoder) GetFeatures() utils.BitstreamFeatures

GetFeatures return information about picture: width, height ...

type Options

type Options struct {
	BypassFiltering        bool
	NoFancyUpsampling      bool
	Crop                   image.Rectangle
	Scale                  image.Rectangle
	UseThreads             bool
	Flip                   bool
	DitheringStrength      int
	AlphaDitheringStrength int
}

Options specifies webp decoding parameters

func (*Options) GetConfig

func (o *Options) GetConfig() (*C.WebPDecoderConfig, error)

GetConfig build WebPDecoderConfig for libwebp

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