"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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var BarcodeFormat_1 = require("../BarcodeFormat");
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var BitMatrix_1 = require("../common/BitMatrix");
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var DecodeHintType_1 = require("../DecodeHintType");
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var NotFoundException_1 = require("../NotFoundException");
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var Result_1 = require("../Result");
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var ResultMetadataType_1 = require("../ResultMetadataType");
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var System_1 = require("../util/System");
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var Decoder_1 = require("./decoder/Decoder");
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var Detector_1 = require("./detector/Detector");
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/*
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* Copyright 2007 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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/**
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* This implementation can detect and decode Data Matrix codes in an image.
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*
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* @author bbrown@google.com (Brian Brown)
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*/
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var DataMatrixReader = /** @class */ (function () {
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function DataMatrixReader() {
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this.decoder = new Decoder_1.default();
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}
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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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* @throws ChecksumException if error correction fails
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*/
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// @Override
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// public Result decode(BinaryBitmap image) throws NotFoundException, ChecksumException, FormatException {
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// return decode(image, null);
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// }
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// @Override
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DataMatrixReader.prototype.decode = function (image, hints) {
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if (hints === void 0) { hints = null; }
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var decoderResult;
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var points;
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if (hints != null && hints.has(DecodeHintType_1.default.PURE_BARCODE)) {
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var bits = DataMatrixReader.extractPureBits(image.getBlackMatrix());
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decoderResult = this.decoder.decode(bits);
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points = DataMatrixReader.NO_POINTS;
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}
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else {
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var detectorResult = new Detector_1.default(image.getBlackMatrix()).detect();
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decoderResult = this.decoder.decode(detectorResult.getBits());
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points = detectorResult.getPoints();
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}
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var rawBytes = decoderResult.getRawBytes();
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var result = new Result_1.default(decoderResult.getText(), rawBytes, 8 * rawBytes.length, points, BarcodeFormat_1.default.DATA_MATRIX, System_1.default.currentTimeMillis());
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var byteSegments = decoderResult.getByteSegments();
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if (byteSegments != null) {
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result.putMetadata(ResultMetadataType_1.default.BYTE_SEGMENTS, byteSegments);
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}
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var ecLevel = decoderResult.getECLevel();
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if (ecLevel != null) {
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result.putMetadata(ResultMetadataType_1.default.ERROR_CORRECTION_LEVEL, ecLevel);
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}
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return result;
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};
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// @Override
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DataMatrixReader.prototype.reset = function () {
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// do nothing
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};
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/**
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* This method detects a code in a "pure" image -- that is, pure monochrome image
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* which contains only an unrotated, unskewed, image of a code, with some white border
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* around it. This is a specialized method that works exceptionally fast in this special
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* case.
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*
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* @see com.google.zxing.qrcode.QRCodeReader#extractPureBits(BitMatrix)
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*/
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DataMatrixReader.extractPureBits = function (image) {
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var leftTopBlack = image.getTopLeftOnBit();
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var rightBottomBlack = image.getBottomRightOnBit();
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if (leftTopBlack == null || rightBottomBlack == null) {
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throw new NotFoundException_1.default();
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}
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var moduleSize = this.moduleSize(leftTopBlack, image);
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var top = leftTopBlack[1];
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var bottom = rightBottomBlack[1];
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var left = leftTopBlack[0];
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var right = rightBottomBlack[0];
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var matrixWidth = (right - left + 1) / moduleSize;
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var matrixHeight = (bottom - top + 1) / moduleSize;
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if (matrixWidth <= 0 || matrixHeight <= 0) {
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throw new NotFoundException_1.default();
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}
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// Push in the "border" by half the module width so that we start
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// sampling in the middle of the module. Just in case the image is a
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// little off, this will help recover.
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var nudge = moduleSize / 2;
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top += nudge;
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left += nudge;
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// Now just read off the bits
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var bits = new BitMatrix_1.default(matrixWidth, matrixHeight);
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for (var y = 0; y < matrixHeight; y++) {
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var iOffset = top + y * moduleSize;
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for (var x = 0; x < matrixWidth; x++) {
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if (image.get(left + x * moduleSize, iOffset)) {
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bits.set(x, y);
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}
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}
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}
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return bits;
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};
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DataMatrixReader.moduleSize = function (leftTopBlack, image) {
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var width = image.getWidth();
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var x = leftTopBlack[0];
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var y = leftTopBlack[1];
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while (x < width && image.get(x, y)) {
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x++;
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}
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if (x === width) {
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throw new NotFoundException_1.default();
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}
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var moduleSize = x - leftTopBlack[0];
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if (moduleSize === 0) {
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throw new NotFoundException_1.default();
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}
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return moduleSize;
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};
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DataMatrixReader.NO_POINTS = [];
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return DataMatrixReader;
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}());
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exports.default = DataMatrixReader;
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