import "golang.org/x/image/ccitt"
Package ccitt implements a CCITT (fax) image decoder.
const AutoDetectHeight = -1
AutoDetectHeight is passed as the height argument to NewReader to indicate that the image height (the number of rows) is not known in advance.
DecodeIntoGray decodes the CCITT-formatted data in r into dst.
It returns an error if dst's width and height don't match the implied width and height of CCITT-formatted data.
func NewReader(r io.Reader, order Order, sf SubFormat, width int, height int, opts *Options) io.Reader
NewReader returns an io.Reader that decodes the CCITT-formatted data in r. The resultant byte stream is one bit per pixel (MSB first), with 1 meaning white and 0 meaning black. Each row in the result is byte-aligned.
A negative height, such as passing AutoDetectHeight, means that the image height is not known in advance. A negative width is invalid.
type Options struct { // Align means that some variable-bit-width codes are byte-aligned. Align bool // Invert means that black is the 1 bit or 0xFF byte, and white is 0. Invert bool }
Options are optional parameters.
Order specifies the bit ordering in a CCITT data stream.
const ( // LSB means Least Significant Bits first. LSB Order = iota // MSB means Most Significant Bits first. MSB )
SubFormat represents that the CCITT format consists of a number of sub-formats. Decoding or encoding a CCITT data stream requires knowing the sub-format context. It is not represented in the data stream per se.
Package ccitt imports 5 packages (graph) and is imported by 5 packages. Updated 2020-12-10. Refresh now. Tools for package owners.