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