webp

README

Overview

Parse raw WEBP RIFF streams. There's an accessor to easily identify and extract the EXIF chunk.

Documentation

Index

• Variables
• func GetModuleRootPath() string
• func GetTestAssetsPath() string
• func GetTestImageFilepath() string
• type ChunkVisitorFunc
• type DataGetterFunc
• type WebpParser
  • func NewWebpParser(r io.Reader) *WebpParser

Variables

var (
	// ErrNoRiffFileHeader indicates that the file-header failed.
	ErrNoRiffFileHeader = errors.New("not on a RIFF file-header")

	// ErrNoWebpSignature indicates that the WEBP signature following the file-
	// header failed.
	ErrNoWebpSignature = errors.New("not a WEBP file")
)

var (
	// DefaultEndianness is the endianness of a standard RIFF stream.
	DefaultEndianness = binary.LittleEndian
)

Functions

func GetModuleRootPath

func GetModuleRootPath() string

GetModuleRootPath returns the root-path of the module.

func GetTestAssetsPath

func GetTestAssetsPath() string

GetTestAssetsPath returns the path of the test-assets.

func GetTestImageFilepath

func GetTestImageFilepath() string

GetTestImageFilepath returns the file-path of the common test-image.

Types

type ChunkVisitorFunc

type ChunkVisitorFunc func(fourCc [4]byte, dataGetter DataGetterFunc) (err error)

ChunkVisitorFunc is a callback that receives each chunk.

type DataGetterFunc

type DataGetterFunc func() (data []byte, err error)

DataGetterFunc is a lazy-getter for the payload data.

type WebpParser

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

WebpParser parses WEBP RIFF streams.

func NewWebpParser

func NewWebpParser(r io.Reader) *WebpParser

NewWebpParser returns a WebpParser.