Struct rxing::oned::MultiFormatOneDReader

pub struct MultiFormatOneDReader { /* private fields */ }

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

Implementations

impl MultiFormatOneDReader

pub fn new(hints: &DecodingHintDictionary) -> Self

Trait Implementations

impl Default for MultiFormatOneDReader

fn default() -> MultiFormatOneDReader

Returns the “default value” for a type.

impl OneDReader for MultiFormatOneDReader

fn decode_row( &mut self, row_number: u32, row: &BitArray, hints: &DecodingHintDictionary ) -> Result<RXingResult>

Attempts to decode a one-dimensional barcode format given a single row of

fn _do_decode<B: Binarizer>( &mut self, image: &mut BinaryBitmap<B>, hints: &DecodingHintDictionary ) -> Result<RXingResult>

We’re going to examine rows from the middle outward, searching alternately above and below the middle, and farther out each time. rowStep is the number of rows between each successive attempt above and below the middle. So we’d scan row middle, then middle - rowStep, then middle + rowStep, then middle - (2 * rowStep), etc. rowStep is bigger as the image is taller, but is always at least 1. We’ve somewhat arbitrarily decided that moving up and down by about 1/16 of the image is pretty good; we try more of the image if “trying harder”.

impl Reader for MultiFormatOneDReader

fn decode<B: Binarizer>( &mut self, image: &mut BinaryBitmap<B> ) -> Result<RXingResult>

Locates and decodes a barcode in some format within an image.

fn decode_with_hints<B: Binarizer>( &mut self, image: &mut BinaryBitmap<B>, hints: &DecodingHintDictionary ) -> Result<RXingResult>

Locates and decodes a barcode in some format within an image. This method also accepts hints, each possibly associated to some data, which may help the implementation decode.

fn reset(&mut self)

Resets any internal state the implementation has after a decode, to prepare it for reuse.