metadata

Documentation

Index

• func RegisterEXIFDecoder(d func(context.Context, []byte, ...image.ReadOption) (*EXIF, error))
• func RegisterEXIFEncoder(e func(context.Context, *EXIF, ...image.WriteOption) ([]byte, error))
• func RegisterICCDecoder(d func(context.Context, []byte, ...image.ReadOption) (*ICC, error))
• func RegisterICCEncoder(e func(context.Context, *ICC, ...image.WriteOption) ([]byte, error))
• func RegisterXMPDecoder(d func(context.Context, []byte, ...image.ReadOption) (*XMP, error))
• func RegisterXMPEncoder(e func(context.Context, *XMP, ...image.WriteOption) ([]byte, error))
• type EXIF
  • func DecodeEXIF(ctx context.Context, b []byte, opt ...image.ReadOption) (*EXIF, error)
  • func (x *EXIF) Encode(ctx context.Context, opt ...image.WriteOption) ([]byte, error)
• type ICC
  • func DecodeICC(ctx context.Context, b []byte, opt ...image.ReadOption) (*ICC, error)
  • func (x *ICC) Encode(ctx context.Context, opt ...image.WriteOption) ([]byte, error)
• type ProfileVersion
• type Response16
• type S15Fixed16
• type U16Fixed16
• type U8Fixed8
• type XMP
  • func DecodeXMP(ctx context.Context, b []byte, opt ...image.ReadOption) (*XMP, error)
  • func (x *XMP) Encode(ctx context.Context, opt ...image.WriteOption) ([]byte, error)
• type XYZNumber

Functions

func RegisterEXIFDecoder

func RegisterEXIFDecoder(d func(context.Context, []byte, ...image.ReadOption) (*EXIF, error))

func RegisterEXIFEncoder

func RegisterEXIFEncoder(e func(context.Context, *EXIF, ...image.WriteOption) ([]byte, error))

func RegisterICCDecoder

func RegisterICCDecoder(d func(context.Context, []byte, ...image.ReadOption) (*ICC, error))

func RegisterICCEncoder

func RegisterICCEncoder(e func(context.Context, *ICC, ...image.WriteOption) ([]byte, error))

func RegisterXMPDecoder

func RegisterXMPDecoder(d func(context.Context, []byte, ...image.ReadOption) (*XMP, error))

func RegisterXMPEncoder

func RegisterXMPEncoder(e func(context.Context, *XMP, ...image.WriteOption) ([]byte, error))

Types

type EXIF

type EXIF struct {
	// Image creator, EXIF tag 315
	Creator string
}

func DecodeEXIF

func DecodeEXIF(ctx context.Context, b []byte, opt ...image.ReadOption) (*EXIF, error)

func (*EXIF) Encode

func (x *EXIF) Encode(ctx context.Context, opt ...image.WriteOption) ([]byte, error)

type ICC

type ICC struct {
	CMMTypeSignature                 uint32
	ProfileVersion                   ProfileVersion
	ProfileClassSignature            uint32
	ColorSpace                       uint32
	ProfileConnectionSpace           uint32
	ProfileCreationTime              time.Time
	PrimaryPlatformSignature         uint32
	CMMFlags                         uint32
	DeviceManufacturer               uint32
	DeviceModel                      uint32
	DeviceAttributes                 uint32
	RenderingIntent                  uint32
	ProfileConnectionSpaceIlluminant XYZNumber
	ProfileCreatorSignature          uint32
}

ICC holds an ICC color profile.

func DecodeICC

func DecodeICC(ctx context.Context, b []byte, opt ...image.ReadOption) (*ICC, error)

func (*ICC) Encode

func (x *ICC) Encode(ctx context.Context, opt ...image.WriteOption) ([]byte, error)

type ProfileVersion

type ProfileVersion struct {
	// Major holds a BCD encoded major version number.
	Major uint8
	// Minor holds a BCD encoded minor and patch number. The first digit
	// is the minor version while the second is the patch level.
	Minor uint8
}

ProfileVersion holds a BCD encoded profile version number.

type Response16

type Response16 struct {
	// Interval holds the interval value
	Interval uint16
	// Measurement holds the measurement value.
	Measurement S15Fixed16
}

Response16 holds an iCC response16Number.

type S15Fixed16

type S15Fixed16 struct {
	Integer  int16
	Fraction uint16
}

S15Fixed16 holds a signed 32 bit fixed point number, with 1 sign bit, 15 integer bits, and 16 fractional bits.

type U16Fixed16

type U16Fixed16 struct {
	Integer  uint16
	Fraction uint16
}

U16Fixed16 holds an unsigned 32 bit fixed point number with 16 integer bits and 16 fractional bits.

type U8Fixed8

type U8Fixed8 struct {
	// Integer holds the unsigned 8 bit integer portion of the number.
	Integer uint8
	// Fraction holds the 8 bit fractional portion of the number.
	Fraction uint8
}

U8Fixed8 holds an unsigned 16 bit fixed point number, with 8 integer bits and 8 fraction bits.

type XMP

type XMP struct {
}

func DecodeXMP

func DecodeXMP(ctx context.Context, b []byte, opt ...image.ReadOption) (*XMP, error)

func (*XMP) Encode

func (x *XMP) Encode(ctx context.Context, opt ...image.WriteOption) ([]byte, error)

type XYZNumber

type XYZNumber struct {
	X S15Fixed16
	Y S15Fixed16
	Z S15Fixed16
}

XYZ number holds a CIE XYZ tristimulus value.