@zxing/library
Version:
TypeScript port of ZXing multi-format 1D/2D barcode image processing library.
99 lines (98 loc) • 3.82 kB
JavaScript
;
/*
* 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.
*/
Object.defineProperty(exports, "__esModule", { value: true });
var Result_1 = require("../Result");
var BarcodeFormat_1 = require("../BarcodeFormat");
var DecodeHintType_1 = require("../DecodeHintType");
var ResultMetadataType_1 = require("../ResultMetadataType");
var System_1 = require("../util/System");
var Decoder_1 = require("./decoder/Decoder");
var Detector_1 = require("./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_1.default(image.getBlackMatrix());
var points = null;
var decoderResult = null;
try {
var detectorResult = detector.detectMirror(false);
points = detectorResult.getPoints();
this.reportFoundResultPoints(hints, points);
decoderResult = new Decoder_1.default().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_1.default().decode(detectorResult);
}
catch (e) {
if (exception != null) {
throw exception;
}
throw e;
}
}
var result = new Result_1.default(decoderResult.getText(), decoderResult.getRawBytes(), decoderResult.getNumBits(), points, BarcodeFormat_1.default.AZTEC, System_1.default.currentTimeMillis());
var byteSegments = decoderResult.getByteSegments();
if (byteSegments != null) {
result.putMetadata(ResultMetadataType_1.default.BYTE_SEGMENTS, byteSegments);
}
var ecLevel = decoderResult.getECLevel();
if (ecLevel != null) {
result.putMetadata(ResultMetadataType_1.default.ERROR_CORRECTION_LEVEL, ecLevel);
}
return result;
};
AztecReader.prototype.reportFoundResultPoints = function (hints, points) {
if (hints != null) {
var rpcb_1 = hints.get(DecodeHintType_1.default.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;
}());
exports.default = AztecReader;