package png

Import Path
	image/png (on golang.org and go.dev)

Dependency Relation
	imports 10 packages, and imported by 0 packages

Involved Source Files
	    paeth.go
	d-> reader.go
	    writer.go

Exported Type Names

	 type CompressionLevel int

		As Types Of (4+)
			const BestCompression
			const BestSpeed
			const DefaultCompression
			const NoCompression
	 type Encoder (struct)
		Encoder configures encoding PNG images.

		Exported Fields (2)
			BufferPool EncoderBufferPool
			CompressionLevel CompressionLevel
		One Exported Method
			(*T) Encode(w io.Writer, m image.Image) error
	 type EncoderBuffer encoder (struct)
		EncoderBuffer holds the buffers used for encoding PNG images.

		As Outputs Of (1+)
			func EncoderBufferPool.Get() *EncoderBuffer
		As Inputs Of (1+)
			func EncoderBufferPool.Put(*EncoderBuffer)
	 type EncoderBufferPool (interface)
		EncoderBufferPool is an interface for getting and returning temporary
		instances of the EncoderBuffer struct. This can be used to reuse buffers
		when encoding multiple images.

		Exported Methods (2)
			 (T) Get() *EncoderBuffer
			 (T) Put(*EncoderBuffer)
	 type FormatError string
		A FormatError reports that the input is not a valid PNG.

		One Exported Method
			 (T) Error() string
		Implements (1+)
			 T : error
	 type UnsupportedError string
		An UnsupportedError reports that the input uses a valid but unimplemented PNG feature.

		One Exported Method
			 (T) Error() string
		Implements (1+)
			 T : error
Exported Values

	const BestCompression CompressionLevel = -3
	const BestSpeed CompressionLevel = -2
	 func Decode(r io.Reader) (image.Image, error)
		Decode reads a PNG image from r and returns it as an image.Image.
		The type of Image returned depends on the PNG contents.
	 func DecodeConfig(r io.Reader) (image.Config, error)
		DecodeConfig returns the color model and dimensions of a PNG image without
		decoding the entire image.
	const DefaultCompression CompressionLevel = 0
	 func Encode(w io.Writer, m image.Image) error
		Encode writes the Image m to w in PNG format. Any Image may be
		encoded, but images that are not image.NRGBA might be encoded lossily.
	const NoCompression CompressionLevel = -1

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