@zxing/library/esm/core/aztec/AztecReader.js

TypeScript port of ZXing multi-format 1D/2D barcode image processing library.

/*
 * Copyright 2010 ZXing authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import Result from '../Result';
import BarcodeFormat from '../BarcodeFormat';
import DecodeHintType from '../DecodeHintType';
import ResultMetadataType from '../ResultMetadataType';
import System from '../util/System';
import Decoder from './decoder/Decoder';
import Detector from './detector/Detector';
// import java.util.List;
// import java.util.Map;
/**
 * This implementation can detect and decode Aztec codes in an image.
 *
 * @author David Olivier
 */
var AztecReader = /** @class */ (function () {
    function AztecReader() {
    }
    /**
     * Locates and decodes a Data Matrix code in an image.
     *
     * @return a String representing the content encoded by the Data Matrix code
     * @throws NotFoundException if a Data Matrix code cannot be found
     * @throws FormatException if a Data Matrix code cannot be decoded
     */
    AztecReader.prototype.decode = function (image, hints) {
        if (hints === void 0) { hints = null; }
        var exception = null;
        var detector = new Detector(image.getBlackMatrix());
        var points = null;
        var decoderResult = null;
        try {
            var detectorResult = detector.detectMirror(false);
            points = detectorResult.getPoints();
            this.reportFoundResultPoints(hints, points);
            decoderResult = new Decoder().decode(detectorResult);
        }
        catch (e) {
            exception = e;
        }
        if (decoderResult == null) {
            try {
                var detectorResult = detector.detectMirror(true);
                points = detectorResult.getPoints();
                this.reportFoundResultPoints(hints, points);
                decoderResult = new Decoder().decode(detectorResult);
            }
            catch (e) {
                if (exception != null) {
                    throw exception;
                }
                throw e;
            }
        }
        var result = new Result(decoderResult.getText(), decoderResult.getRawBytes(), decoderResult.getNumBits(), points, BarcodeFormat.AZTEC, System.currentTimeMillis());
        var byteSegments = decoderResult.getByteSegments();
        if (byteSegments != null) {
            result.putMetadata(ResultMetadataType.BYTE_SEGMENTS, byteSegments);
        }
        var ecLevel = decoderResult.getECLevel();
        if (ecLevel != null) {
            result.putMetadata(ResultMetadataType.ERROR_CORRECTION_LEVEL, ecLevel);
        }
        return result;
    };
    AztecReader.prototype.reportFoundResultPoints = function (hints, points) {
        if (hints != null) {
            var rpcb_1 = hints.get(DecodeHintType.NEED_RESULT_POINT_CALLBACK);
            if (rpcb_1 != null) {
                points.forEach(function (point, idx, arr) {
                    rpcb_1.foundPossibleResultPoint(point);
                });
            }
        }
    };
    // @Override
    AztecReader.prototype.reset = function () {
        // do nothing
    };
    return AztecReader;
}());
export default AztecReader;