Enum DecodeHintType

Namespace

ZXing

Assembly

zxing.dll

Encapsulates a type of hint that a caller may pass to a barcode reader to help it more quickly or accurately decode it. It is up to implementations to decide what, if anything, to do with the information that is supplied. decode(BinaryBitmap, IDictionary<DecodeHintType, object>)

public enum DecodeHintType

Fields

ALLOWED_EAN_EXTENSIONS = 14

Allowed extension lengths for EAN or UPC barcodes. Other formats will ignore this. Maps to an 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.

ALLOWED_LENGTHS = 5

Allowed lengths of encoded data -- reject anything else. Maps to an int[].

ALSO_INVERTED = 15

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}.

ASSUME_CODE_39_CHECK_DIGIT = 6

Assume Code 39 codes employ a check digit. Maps to bool.

ASSUME_GS1 = 12

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 bool.

ASSUME_MSI_CHECK_DIGIT = 8

Assume MSI codes employ a check digit. Maps to bool.

CHARACTER_SET = 4

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

NEED_RESULT_POINT_CALLBACK = 7

The caller needs to be notified via callback when a possible ResultPoint is found. Maps to a ResultPointCallback.

OTHER = 0

Unspecified, application-specific hint. Maps to an unspecified object.

POSSIBLE_FORMATS = 2

Image is known to be of one of a few possible formats. Maps to a ICollection of BarcodeFormats.

PURE_BARCODE = 1

Image is a pure monochrome image of a barcode. Doesn't matter what it maps to; use bool = true.

RELAXED_CODE_39_EXTENDED_MODE = 10

Don't fail if a Code39 is detected but can't be decoded in extended mode. Return the raw Code39 result instead. Maps to bool.

RETURN_CODABAR_START_END = 13

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 bool.

TRY_HARDER = 3

Spend more time to try to find a barcode; optimize for accuracy, not speed. Doesn't matter what it maps to; use bool = true.

TRY_HARDER_WITHOUT_ROTATION = 11

1D readers supporting rotation with TRY_HARDER enabled. But BarcodeReader class can do auto-rotating for 1D and 2D codes. Enabling that option prevents 1D readers doing double rotation. BarcodeReader enables that option automatically if "global" auto-rotation is enabled. Maps to bool.

USE_CODE_39_EXTENDED_MODE = 9

if Code39 could be detected try to use extended mode for full ASCII character set Maps to bool.