/* * Copyright 2013 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. */ var __extends = (this && this.__extends) || (function () { var extendStatics = function (d, b) { extendStatics = Object.setPrototypeOf || ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) || function (d, b) { for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p]; }; return extendStatics(d, b); }; return function (d, b) { extendStatics(d, b); function __() { this.constructor = d; } d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __()); }; })(); var __values = (this && this.__values) || function(o) { var s = typeof Symbol === "function" && Symbol.iterator, m = s && o[s], i = 0; if (m) return m.call(o); if (o && typeof o.length === "number") return { next: function () { if (o && i >= o.length) o = void 0; return { value: o && o[i++], done: !o }; } }; throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined."); }; // import com.google.zxing.pdf417.PDF417Common; import PDF417Common from '../PDF417Common'; import BarcodeMetadata from './BarcodeMetadata'; import DetectionResultColumn from './DetectionResultColumn'; import BarcodeValue from './BarcodeValue'; /** * @author Guenther Grau */ var DetectionResultRowIndicatorColumn = /** @class */ (function (_super) { __extends(DetectionResultRowIndicatorColumn, _super); function DetectionResultRowIndicatorColumn(boundingBox, isLeft) { var _this = _super.call(this, boundingBox) || this; _this._isLeft = isLeft; return _this; } DetectionResultRowIndicatorColumn.prototype.setRowNumbers = function () { var e_1, _a; try { for (var _b = __values(this.getCodewords()), _c = _b.next(); !_c.done; _c = _b.next()) { var codeword = _c.value /*Codeword*/; if (codeword != null) { codeword.setRowNumberAsRowIndicatorColumn(); } } } catch (e_1_1) { e_1 = { error: e_1_1 }; } finally { try { if (_c && !_c.done && (_a = _b.return)) _a.call(_b); } finally { if (e_1) throw e_1.error; } } }; // TODO implement properly // TODO maybe we should add missing codewords to store the correct row number to make // finding row numbers for other columns easier // use row height count to make detection of invalid row numbers more reliable DetectionResultRowIndicatorColumn.prototype.adjustCompleteIndicatorColumnRowNumbers = function (barcodeMetadata) { var codewords = this.getCodewords(); this.setRowNumbers(); this.removeIncorrectCodewords(codewords, barcodeMetadata); var boundingBox = this.getBoundingBox(); var top = this._isLeft ? boundingBox.getTopLeft() : boundingBox.getTopRight(); var bottom = this._isLeft ? boundingBox.getBottomLeft() : boundingBox.getBottomRight(); var firstRow = this.imageRowToCodewordIndex(Math.trunc(top.getY())); var lastRow = this.imageRowToCodewordIndex(Math.trunc(bottom.getY())); // We need to be careful using the average row height. Barcode could be skewed so that we have smaller and // taller rows // float averageRowHeight = (lastRow - firstRow) / /*(float)*/ barcodeMetadata.getRowCount(); var barcodeRow = -1; var maxRowHeight = 1; var currentRowHeight = 0; for (var codewordsRow /*int*/ = firstRow; codewordsRow < lastRow; codewordsRow++) { if (codewords[codewordsRow] == null) { continue; } var codeword = codewords[codewordsRow]; // float expectedRowNumber = (codewordsRow - firstRow) / averageRowHeight; // if (Math.abs(codeword.getRowNumber() - expectedRowNumber) > 2) { // SimpleLog.log(LEVEL.WARNING, // "Removing codeword, rowNumberSkew too high, codeword[" + codewordsRow + "]: Expected Row: " + // expectedRowNumber + ", RealRow: " + codeword.getRowNumber() + ", value: " + codeword.getValue()); // codewords[codewordsRow] = null; // } var rowDifference = codeword.getRowNumber() - barcodeRow; // TODO improve handling with case where first row indicator doesn't start with 0 if (rowDifference === 0) { currentRowHeight++; } else if (rowDifference === 1) { maxRowHeight = Math.max(maxRowHeight, currentRowHeight); currentRowHeight = 1; barcodeRow = codeword.getRowNumber(); } else if (rowDifference < 0 || codeword.getRowNumber() >= barcodeMetadata.getRowCount() || rowDifference > codewordsRow) { codewords[codewordsRow] = null; } else { var checkedRows = void 0; if (maxRowHeight > 2) { checkedRows = (maxRowHeight - 2) * rowDifference; } else { checkedRows = rowDifference; } var closePreviousCodewordFound = checkedRows >= codewordsRow; for (var i /*int*/ = 1; i <= checkedRows && !closePreviousCodewordFound; i++) { // there must be (height * rowDifference) number of codewords missing. For now we assume height = 1. // This should hopefully get rid of most problems already. closePreviousCodewordFound = codewords[codewordsRow - i] != null; } if (closePreviousCodewordFound) { codewords[codewordsRow] = null; } else { barcodeRow = codeword.getRowNumber(); currentRowHeight = 1; } } } // return (int) (averageRowHeight + 0.5); }; DetectionResultRowIndicatorColumn.prototype.getRowHeights = function () { var e_2, _a; var barcodeMetadata = this.getBarcodeMetadata(); if (barcodeMetadata == null) { return null; } this.adjustIncompleteIndicatorColumnRowNumbers(barcodeMetadata); var result = new Int32Array(barcodeMetadata.getRowCount()); try { for (var _b = __values(this.getCodewords()), _c = _b.next(); !_c.done; _c = _b.next()) { var codeword = _c.value /*Codeword*/; if (codeword != null) { var rowNumber = codeword.getRowNumber(); if (rowNumber >= result.length) { // We have more rows than the barcode metadata allows for, ignore them. continue; } result[rowNumber]++; } // else throw exception? } } catch (e_2_1) { e_2 = { error: e_2_1 }; } finally { try { if (_c && !_c.done && (_a = _b.return)) _a.call(_b); } finally { if (e_2) throw e_2.error; } } return result; }; // TODO maybe we should add missing codewords to store the correct row number to make // finding row numbers for other columns easier // use row height count to make detection of invalid row numbers more reliable DetectionResultRowIndicatorColumn.prototype.adjustIncompleteIndicatorColumnRowNumbers = function (barcodeMetadata) { var boundingBox = this.getBoundingBox(); var top = this._isLeft ? boundingBox.getTopLeft() : boundingBox.getTopRight(); var bottom = this._isLeft ? boundingBox.getBottomLeft() : boundingBox.getBottomRight(); var firstRow = this.imageRowToCodewordIndex(Math.trunc(top.getY())); var lastRow = this.imageRowToCodewordIndex(Math.trunc(bottom.getY())); // float averageRowHeight = (lastRow - firstRow) / /*(float)*/ barcodeMetadata.getRowCount(); var codewords = this.getCodewords(); var barcodeRow = -1; var maxRowHeight = 1; var currentRowHeight = 0; for (var codewordsRow /*int*/ = firstRow; codewordsRow < lastRow; codewordsRow++) { if (codewords[codewordsRow] == null) { continue; } var codeword = codewords[codewordsRow]; codeword.setRowNumberAsRowIndicatorColumn(); var rowDifference = codeword.getRowNumber() - barcodeRow; // TODO improve handling with case where first row indicator doesn't start with 0 if (rowDifference === 0) { currentRowHeight++; } else if (rowDifference === 1) { maxRowHeight = Math.max(maxRowHeight, currentRowHeight); currentRowHeight = 1; barcodeRow = codeword.getRowNumber(); } else if (codeword.getRowNumber() >= barcodeMetadata.getRowCount()) { codewords[codewordsRow] = null; } else { barcodeRow = codeword.getRowNumber(); currentRowHeight = 1; } } // return (int) (averageRowHeight + 0.5); }; DetectionResultRowIndicatorColumn.prototype.getBarcodeMetadata = function () { var e_3, _a; var codewords = this.getCodewords(); var barcodeColumnCount = new BarcodeValue(); var barcodeRowCountUpperPart = new BarcodeValue(); var barcodeRowCountLowerPart = new BarcodeValue(); var barcodeECLevel = new BarcodeValue(); try { for (var codewords_1 = __values(codewords), codewords_1_1 = codewords_1.next(); !codewords_1_1.done; codewords_1_1 = codewords_1.next()) { var codeword = codewords_1_1.value /*Codeword*/; if (codeword == null) { continue; } codeword.setRowNumberAsRowIndicatorColumn(); var rowIndicatorValue = codeword.getValue() % 30; var codewordRowNumber = codeword.getRowNumber(); if (!this._isLeft) { codewordRowNumber += 2; } switch (codewordRowNumber % 3) { case 0: barcodeRowCountUpperPart.setValue(rowIndicatorValue * 3 + 1); break; case 1: barcodeECLevel.setValue(rowIndicatorValue / 3); barcodeRowCountLowerPart.setValue(rowIndicatorValue % 3); break; case 2: barcodeColumnCount.setValue(rowIndicatorValue + 1); break; } } } catch (e_3_1) { e_3 = { error: e_3_1 }; } finally { try { if (codewords_1_1 && !codewords_1_1.done && (_a = codewords_1.return)) _a.call(codewords_1); } finally { if (e_3) throw e_3.error; } } // Maybe we should check if we have ambiguous values? if ((barcodeColumnCount.getValue().length === 0) || (barcodeRowCountUpperPart.getValue().length === 0) || (barcodeRowCountLowerPart.getValue().length === 0) || (barcodeECLevel.getValue().length === 0) || barcodeColumnCount.getValue()[0] < 1 || barcodeRowCountUpperPart.getValue()[0] + barcodeRowCountLowerPart.getValue()[0] < PDF417Common.MIN_ROWS_IN_BARCODE || barcodeRowCountUpperPart.getValue()[0] + barcodeRowCountLowerPart.getValue()[0] > PDF417Common.MAX_ROWS_IN_BARCODE) { return null; } var barcodeMetadata = new BarcodeMetadata(barcodeColumnCount.getValue()[0], barcodeRowCountUpperPart.getValue()[0], barcodeRowCountLowerPart.getValue()[0], barcodeECLevel.getValue()[0]); this.removeIncorrectCodewords(codewords, barcodeMetadata); return barcodeMetadata; }; DetectionResultRowIndicatorColumn.prototype.removeIncorrectCodewords = function (codewords, barcodeMetadata) { // Remove codewords which do not match the metadata // TODO Maybe we should keep the incorrect codewords for the start and end positions? for (var codewordRow /*int*/ = 0; codewordRow < codewords.length; codewordRow++) { var codeword = codewords[codewordRow]; if (codewords[codewordRow] == null) { continue; } var rowIndicatorValue = codeword.getValue() % 30; var codewordRowNumber = codeword.getRowNumber(); if (codewordRowNumber > barcodeMetadata.getRowCount()) { codewords[codewordRow] = null; continue; } if (!this._isLeft) { codewordRowNumber += 2; } switch (codewordRowNumber % 3) { case 0: if (rowIndicatorValue * 3 + 1 !== barcodeMetadata.getRowCountUpperPart()) { codewords[codewordRow] = null; } break; case 1: if (Math.trunc(rowIndicatorValue / 3) !== barcodeMetadata.getErrorCorrectionLevel() || rowIndicatorValue % 3 !== barcodeMetadata.getRowCountLowerPart()) { codewords[codewordRow] = null; } break; case 2: if (rowIndicatorValue + 1 !== barcodeMetadata.getColumnCount()) { codewords[codewordRow] = null; } break; } } }; DetectionResultRowIndicatorColumn.prototype.isLeft = function () { return this._isLeft; }; // @Override DetectionResultRowIndicatorColumn.prototype.toString = function () { return 'IsLeft: ' + this._isLeft + '\n' + _super.prototype.toString.call(this); }; return DetectionResultRowIndicatorColumn; }(DetectionResultColumn)); export default DetectionResultRowIndicatorColumn;