com.google.zxing

Class DecodeHintType

java.lang.Object

com.google.zxing.DecodeHintType

public final class DecodeHintType
extends Object

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.

Author:

Sean Owen, dswitkin@google.com (Daniel Switkin)

See Also:

Reader#decode(BinaryBitmap,java.util.Hashtable)

Field Summary

Fields

Modifier and Type	Field and Description
static DecodeHintType	ALLOWED_LENGTHS Allowed lengths of encoded data -- reject anything else.
static DecodeHintType	ASSUME_CODE_39_CHECK_DIGIT Assume Code 39 codes employ a check digit.
static DecodeHintType	CHARACTER_SET Specifies what character encoding to use when decoding, where applicable (type String)
static DecodeHintType	NEED_RESULT_POINT_CALLBACK The caller needs to be notified via callback when a possible ResultPoint is found.
static DecodeHintType	OTHER Unspecified, application-specific hint.
static DecodeHintType	POSSIBLE_FORMATS Image is known to be of one of a few possible formats.
static DecodeHintType	PURE_BARCODE Image is a pure monochrome image of a barcode.
static DecodeHintType	TRY_HARDER Spend more time to try to find a barcode; optimize for accuracy, not speed.

Method Summary

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

OTHER

public static final DecodeHintType OTHER

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

PURE_BARCODE

public static final DecodeHintType PURE_BARCODE

Image is a pure monochrome image of a barcode. Doesn't matter what it maps to; use Boolean.TRUE.

POSSIBLE_FORMATS

public static final DecodeHintType POSSIBLE_FORMATS

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

TRY_HARDER

public static final DecodeHintType TRY_HARDER

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

CHARACTER_SET

public static final DecodeHintType CHARACTER_SET

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

ALLOWED_LENGTHS

public static final DecodeHintType ALLOWED_LENGTHS

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

ASSUME_CODE_39_CHECK_DIGIT

public static final DecodeHintType ASSUME_CODE_39_CHECK_DIGIT

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

NEED_RESULT_POINT_CALLBACK

public static final DecodeHintType NEED_RESULT_POINT_CALLBACK

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