package jpeg

Import Path
	image/jpeg (on go.dev)

Dependency Relation
	imports 6 packages, and imported by 0 packages

Involved Source Files

	    fdct.go
	    huffman.go
	    idct.go
	  d reader.go
		Package jpeg implements a JPEG image decoder and encoder.
		
		JPEG is defined in ITU-T T.81: https://www.w3.org/Graphics/JPEG/itu-t81.pdf.

	    scan.go
	    writer.go
Package-Level Type Names (total 4)

	/* sort by: alphabet | popularity */
	 type FormatError string (basic type)
		A FormatError reports that the input is not a valid JPEG.

		Methods (only one)
			( FormatError) Error() string
		Implements (at least one exported)
			 FormatError : error

	 type Options (struct)
		Options are the encoding parameters.
		Quality ranges from 1 to 100 inclusive, higher is better.

		Fields (only one)
			Quality int
		As Inputs Of (at least one exported)
			func Encode(w io.Writer, m image.Image, o *Options) error

	 type Reader (interface)
		Deprecated: Reader is not used by the image/jpeg package and should
		not be used by others. It is kept for compatibility.

		Methods (total 2)
			( Reader) Read(p []byte) (n int, err error)
			( Reader) ReadByte() (byte, error)
		Implemented By (at least 8)
			*bufio.Reader
			 bufio.ReadWriter
			*bytes.Buffer
			*bytes.Reader
			 compress/flate.Reader (interface)
			*internal/trace.Writer
			*internal/zstd.Reader
			*strings.Reader
		Implements (at least 3)
			 Reader : compress/flate.Reader
			 Reader : io.ByteReader
			 Reader : io.Reader

	 type UnsupportedError string (basic type)
		An UnsupportedError reports that the input uses a valid but unimplemented JPEG feature.

		Methods (only one)
			( UnsupportedError) Error() string
		Implements (at least one exported)
			 UnsupportedError : error


Package-Level Functions (total 3)

	 func Decode(r io.Reader) (image.Image, error)
		Decode reads a JPEG image from r and returns it as an image.Image.

	 func DecodeConfig(r io.Reader) (image.Config, error)
		DecodeConfig returns the color model and dimensions of a JPEG image without
		decoding the entire image.

	 func Encode(w io.Writer, m image.Image, o *Options) error
		Encode writes the Image m to w in JPEG 4:2:0 baseline format with the given
		options. Default parameters are used if a nil *Options is passed.


Package-Level Constants (only one)

	const DefaultQuality = 75
		DefaultQuality is the default quality encoding parameter.

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