image

Documentation

Index

• func CheckPNGCRC32(fileType string, data []byte) (flag bool, calCRC32 uint32, fileCRC32 uint32, err error)
• func FixPNGIHDR(bin []byte, maxDim int) (fixedBin []byte, width []byte, height []byte, err error)
• func LSB(img image.Image) ([]byte, error)

Functions

func CheckPNGCRC32

func CheckPNGCRC32(fileType string, data []byte) (flag bool, calCRC32 uint32, fileCRC32 uint32, err error)

CalcCRC32 Calculate CRC32 Value 计算 CRC32 的值 返回 CRC32 是否正确 计算的值 提取的值

func FixPNGIHDR

func FixPNGIHDR(bin []byte, maxDim int) (fixedBin []byte, width []byte, height []byte, err error)

FixPNGIHDR 修复 PNG Image 的宽高

func LSB

func LSB(img image.Image) ([]byte, error)