image: golang.org/x/image/tiff Index | Files | Directories

package tiff

import "golang.org/x/image/tiff"

Package tiff implements a TIFF image decoder and encoder.

The TIFF specification is at http://partners.adobe.com/public/developer/en/tiff/TIFF6.pdf

Index

Package Files

buffer.go compress.go consts.go reader.go writer.go

func Decode

❖
func Decode(r io.Reader) (img image.Image, err error)

Decode reads a TIFF image from r and returns it as an image.Image. The type of Image returned depends on the contents of the TIFF.

func DecodeConfig

❖
func DecodeConfig(r io.Reader) (image.Config, error)

DecodeConfig returns the color model and dimensions of a TIFF image without decoding the entire image.

func Encode

❖
func Encode(w io.Writer, m image.Image, opt *Options) error

Encode writes the image m to w. opt determines the options used for encoding, such as the compression type. If opt is nil, an uncompressed image is written.

type CompressionType

❖
type CompressionType int

CompressionType describes the type of compression used in Options.

❖
const (
    Uncompressed CompressionType = iota
    Deflate
)

type FormatError

❖
type FormatError string

A FormatError reports that the input is not a valid TIFF image.

func (FormatError) Error

❖
func (e FormatError) Error() string

type InternalError

❖
type InternalError string

An InternalError reports that an internal error was encountered.

func (InternalError) Error

❖
func (e InternalError) Error() string

type Options

❖
type Options struct {
    // Compression is the type of compression used.
    Compression CompressionType
    // Predictor determines whether a differencing predictor is used;
    // if true, instead of each pixel's color, the color difference to the
    // preceding one is saved.  This improves the compression for certain
    // types of images and compressors. For example, it works well for
    // photos with Deflate compression.
    Predictor bool
}

Options are the encoding parameters.

type UnsupportedError

❖
type UnsupportedError string

An UnsupportedError reports that the input uses a valid but unimplemented feature.

func (UnsupportedError) Error

❖
func (e UnsupportedError) Error() string

Directories

PathSynopsis
lzwPackage lzw implements the Lempel-Ziv-Welch compressed data format, described in T.

Package tiff imports 12 packages (graph) and is imported by 23 packages. Updated 6 days ago. Refresh now. Tools for package owners.