Enum rxing::DecodeHintValue

pub enum DecodeHintValue {
    Other(String),
    PureBarcode(bool),
    PossibleFormats(HashSet<BarcodeFormat>),
    TryHarder(bool),
    CharacterSet(String),
    AllowedLengths(Vec<u32>),
    AssumeCode39CheckDigit(bool),
    AssumeGs1(bool),
    ReturnCodabarStartEnd(bool),
    NeedResultPointCallback(RXingResultPointCallback),
    AllowedEanExtensions(Vec<u32>),
    AlsoInverted(bool),
}

Variants

Other(String)

Unspecified, application-specific hint. Maps to an unspecified {@link Object}.

PureBarcode(bool)

Image is a pure monochrome image of a barcode. Doesn’t matter what it maps to; use {@link Boolean#TRUE}.

PossibleFormats(HashSet<BarcodeFormat>)

Image is known to be of one of a few possible formats. Maps to a {@link List} of {@link BarcodeFormat}s.

TryHarder(bool)

Spend more time to try to find a barcode; optimize for accuracy, not speed. Doesn’t matter what it maps to; use {@link Boolean#TRUE}.

CharacterSet(String)

Specifies what character encoding to use when decoding, where applicable (type String)

AllowedLengths(Vec<u32>)

Allowed lengths of encoded data – reject anything else. Maps to an {@code int[]}.

AssumeCode39CheckDigit(bool)

Assume Code 39 codes employ a check digit. Doesn’t matter what it maps to; use {@link Boolean#TRUE}.

AssumeGs1(bool)

Assume the barcode is being processed as a GS1 barcode, and modify behavior as needed. For example this affects FNC1 handling for Code 128 (aka GS1-128). Doesn’t matter what it maps to; use {@link Boolean#TRUE}.

ReturnCodabarStartEnd(bool)

If true, return the start and end digits in a Codabar barcode instead of stripping them. They are alpha, whereas the rest are numeric. By default, they are stripped, but this causes them to not be. Doesn’t matter what it maps to; use {@link Boolean#TRUE}.

NeedResultPointCallback(RXingResultPointCallback)

The caller needs to be notified via callback when a possible {@link RXingResultPoint} is found. Maps to a {@link RXingResultPointCallback}.

AllowedEanExtensions(Vec<u32>)

Allowed extension lengths for EAN or UPC barcodes. Other formats will ignore this. Maps to an {@code int[]} of the allowed extension lengths, for example [2], [5], or [2, 5]. If it is optional to have an extension, do not set this hint. If this is set, and a UPC or EAN barcode is found but an extension is not, then no result will be returned at all.

AlsoInverted(bool)

If true, also tries to decode as inverted image. All configured decoders are simply called a second time with an inverted image. Doesn’t matter what it maps to; use {@link Boolean#TRUE}.

Trait Implementations

impl Clone for DecodeHintValue

fn clone(&self) -> DecodeHintValue

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.