@zxing/library
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TypeScript port of ZXing multi-format 1D/2D barcode image processing library.
29 lines (28 loc) • 1.21 kB
TypeScript
import Version from './Version';
import ErrorCorrectionLevel from './ErrorCorrectionLevel';
/**
* <p>Encapsulates a block of data within a QR Code. QR Codes may split their data into
* multiple blocks, each of which is a unit of data and error-correction codewords. Each
* is represented by an instance of this class.</p>
*
* @author Sean Owen
*/
export default class DataBlock {
private numDataCodewords;
private codewords;
private constructor();
/**
* <p>When QR Codes use multiple data blocks, they are actually interleaved.
* That is, the first byte of data block 1 to n is written, then the second bytes, and so on. This
* method will separate the data into original blocks.</p>
*
* @param rawCodewords bytes as read directly from the QR Code
* @param version version of the QR Code
* @param ecLevel error-correction level of the QR Code
* @return DataBlocks containing original bytes, "de-interleaved" from representation in the
* QR Code
*/
static getDataBlocks(rawCodewords: Uint8Array, version: Version, ecLevel: ErrorCorrectionLevel): DataBlock[];
getNumDataCodewords(): number;
getCodewords(): Uint8Array;
}