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1237 lines
27 KiB
1237 lines
27 KiB
//---------------------------------------------------------------------
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// QRCode for JavaScript
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//
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// Copyright (c) 2009 Kazuhiko Arase
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//
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// URL: http://www.d-project.com/
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//
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// Licensed under the MIT license:
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// http://www.opensource.org/licenses/mit-license.php
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//
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// The word "QR Code" is registered trademark of
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// DENSO WAVE INCORPORATED
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// http://www.denso-wave.com/qrcode/faqpatent-e.html
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//
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//---------------------------------------------------------------------
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//---------------------------------------------------------------------
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// QR8bitByte
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//---------------------------------------------------------------------
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function QR8bitByte(data) {
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this.mode = QRMode.MODE_8BIT_BYTE;
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this.data = data;
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}
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QR8bitByte.prototype = {
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getLength : function(buffer) {
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return this.data.length;
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},
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write : function(buffer) {
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for (var i = 0; i < this.data.length; i++) {
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// not JIS ...
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buffer.put(this.data.charCodeAt(i), 8);
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}
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}
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};
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//---------------------------------------------------------------------
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// QRCode
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//---------------------------------------------------------------------
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function QRCode(typeNumber, errorCorrectLevel) {
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this.typeNumber = typeNumber;
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this.errorCorrectLevel = errorCorrectLevel;
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this.modules = null;
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this.moduleCount = 0;
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this.dataCache = null;
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this.dataList = new Array();
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}
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QRCode.prototype = {
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addData : function(data) {
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var newData = new QR8bitByte(data);
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this.dataList.push(newData);
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this.dataCache = null;
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},
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isDark : function(row, col) {
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if (row < 0 || this.moduleCount <= row || col < 0 || this.moduleCount <= col) {
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throw new Error(row + "," + col);
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}
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return this.modules[row][col];
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},
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getModuleCount : function() {
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return this.moduleCount;
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},
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make : function() {
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// Calculate automatically typeNumber if provided is < 1
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if (this.typeNumber < 1 ){
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var typeNumber = 1;
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for (typeNumber = 1; typeNumber < 40; typeNumber++) {
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var rsBlocks = QRRSBlock.getRSBlocks(typeNumber, this.errorCorrectLevel);
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var buffer = new QRBitBuffer();
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var totalDataCount = 0;
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for (var i = 0; i < rsBlocks.length; i++) {
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totalDataCount += rsBlocks[i].dataCount;
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}
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for (var i = 0; i < this.dataList.length; i++) {
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var data = this.dataList[i];
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buffer.put(data.mode, 4);
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buffer.put(data.getLength(), QRUtil.getLengthInBits(data.mode, typeNumber) );
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data.write(buffer);
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}
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if (buffer.getLengthInBits() <= totalDataCount * 8)
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break;
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}
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this.typeNumber = typeNumber;
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}
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this.makeImpl(false, this.getBestMaskPattern() );
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},
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makeImpl : function(test, maskPattern) {
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this.moduleCount = this.typeNumber * 4 + 17;
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this.modules = new Array(this.moduleCount);
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for (var row = 0; row < this.moduleCount; row++) {
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this.modules[row] = new Array(this.moduleCount);
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for (var col = 0; col < this.moduleCount; col++) {
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this.modules[row][col] = null;//(col + row) % 3;
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}
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}
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this.setupPositionProbePattern(0, 0);
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this.setupPositionProbePattern(this.moduleCount - 7, 0);
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this.setupPositionProbePattern(0, this.moduleCount - 7);
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this.setupPositionAdjustPattern();
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this.setupTimingPattern();
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this.setupTypeInfo(test, maskPattern);
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if (this.typeNumber >= 7) {
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this.setupTypeNumber(test);
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}
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if (this.dataCache == null) {
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this.dataCache = QRCode.createData(this.typeNumber, this.errorCorrectLevel, this.dataList);
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}
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this.mapData(this.dataCache, maskPattern);
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},
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setupPositionProbePattern : function(row, col) {
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for (var r = -1; r <= 7; r++) {
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if (row + r <= -1 || this.moduleCount <= row + r) continue;
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for (var c = -1; c <= 7; c++) {
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if (col + c <= -1 || this.moduleCount <= col + c) continue;
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if ( (0 <= r && r <= 6 && (c == 0 || c == 6) )
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|| (0 <= c && c <= 6 && (r == 0 || r == 6) )
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|| (2 <= r && r <= 4 && 2 <= c && c <= 4) ) {
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this.modules[row + r][col + c] = true;
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} else {
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this.modules[row + r][col + c] = false;
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}
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}
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}
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},
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getBestMaskPattern : function() {
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var minLostPoint = 0;
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var pattern = 0;
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for (var i = 0; i < 8; i++) {
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this.makeImpl(true, i);
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var lostPoint = QRUtil.getLostPoint(this);
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if (i == 0 || minLostPoint > lostPoint) {
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minLostPoint = lostPoint;
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pattern = i;
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}
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}
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return pattern;
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},
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createMovieClip : function(target_mc, instance_name, depth) {
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var qr_mc = target_mc.createEmptyMovieClip(instance_name, depth);
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var cs = 1;
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this.make();
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for (var row = 0; row < this.modules.length; row++) {
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var y = row * cs;
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for (var col = 0; col < this.modules[row].length; col++) {
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var x = col * cs;
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var dark = this.modules[row][col];
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if (dark) {
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qr_mc.beginFill(0, 100);
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qr_mc.moveTo(x, y);
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qr_mc.lineTo(x + cs, y);
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qr_mc.lineTo(x + cs, y + cs);
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qr_mc.lineTo(x, y + cs);
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qr_mc.endFill();
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}
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}
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}
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return qr_mc;
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},
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setupTimingPattern : function() {
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for (var r = 8; r < this.moduleCount - 8; r++) {
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if (this.modules[r][6] != null) {
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continue;
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}
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this.modules[r][6] = (r % 2 == 0);
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}
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for (var c = 8; c < this.moduleCount - 8; c++) {
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if (this.modules[6][c] != null) {
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continue;
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}
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this.modules[6][c] = (c % 2 == 0);
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}
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},
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setupPositionAdjustPattern : function() {
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var pos = QRUtil.getPatternPosition(this.typeNumber);
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for (var i = 0; i < pos.length; i++) {
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for (var j = 0; j < pos.length; j++) {
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var row = pos[i];
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var col = pos[j];
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if (this.modules[row][col] != null) {
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continue;
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}
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for (var r = -2; r <= 2; r++) {
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for (var c = -2; c <= 2; c++) {
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if (r == -2 || r == 2 || c == -2 || c == 2
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|| (r == 0 && c == 0) ) {
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this.modules[row + r][col + c] = true;
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} else {
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this.modules[row + r][col + c] = false;
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}
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}
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}
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}
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}
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},
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setupTypeNumber : function(test) {
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var bits = QRUtil.getBCHTypeNumber(this.typeNumber);
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for (var i = 0; i < 18; i++) {
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var mod = (!test && ( (bits >> i) & 1) == 1);
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this.modules[Math.floor(i / 3)][i % 3 + this.moduleCount - 8 - 3] = mod;
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}
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for (var i = 0; i < 18; i++) {
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var mod = (!test && ( (bits >> i) & 1) == 1);
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this.modules[i % 3 + this.moduleCount - 8 - 3][Math.floor(i / 3)] = mod;
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}
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},
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setupTypeInfo : function(test, maskPattern) {
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var data = (this.errorCorrectLevel << 3) | maskPattern;
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var bits = QRUtil.getBCHTypeInfo(data);
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// vertical
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for (var i = 0; i < 15; i++) {
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var mod = (!test && ( (bits >> i) & 1) == 1);
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if (i < 6) {
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this.modules[i][8] = mod;
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} else if (i < 8) {
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this.modules[i + 1][8] = mod;
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} else {
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this.modules[this.moduleCount - 15 + i][8] = mod;
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}
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}
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// horizontal
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for (var i = 0; i < 15; i++) {
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var mod = (!test && ( (bits >> i) & 1) == 1);
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if (i < 8) {
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this.modules[8][this.moduleCount - i - 1] = mod;
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} else if (i < 9) {
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this.modules[8][15 - i - 1 + 1] = mod;
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} else {
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this.modules[8][15 - i - 1] = mod;
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}
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}
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// fixed module
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this.modules[this.moduleCount - 8][8] = (!test);
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},
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mapData : function(data, maskPattern) {
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var inc = -1;
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var row = this.moduleCount - 1;
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var bitIndex = 7;
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var byteIndex = 0;
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for (var col = this.moduleCount - 1; col > 0; col -= 2) {
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if (col == 6) col--;
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while (true) {
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for (var c = 0; c < 2; c++) {
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if (this.modules[row][col - c] == null) {
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var dark = false;
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if (byteIndex < data.length) {
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dark = ( ( (data[byteIndex] >>> bitIndex) & 1) == 1);
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}
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var mask = QRUtil.getMask(maskPattern, row, col - c);
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if (mask) {
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dark = !dark;
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}
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this.modules[row][col - c] = dark;
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bitIndex--;
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if (bitIndex == -1) {
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byteIndex++;
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bitIndex = 7;
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}
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}
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}
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row += inc;
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if (row < 0 || this.moduleCount <= row) {
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row -= inc;
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inc = -inc;
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break;
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}
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}
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}
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}
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};
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QRCode.PAD0 = 0xEC;
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QRCode.PAD1 = 0x11;
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QRCode.createData = function(typeNumber, errorCorrectLevel, dataList) {
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var rsBlocks = QRRSBlock.getRSBlocks(typeNumber, errorCorrectLevel);
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var buffer = new QRBitBuffer();
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for (var i = 0; i < dataList.length; i++) {
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var data = dataList[i];
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buffer.put(data.mode, 4);
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buffer.put(data.getLength(), QRUtil.getLengthInBits(data.mode, typeNumber) );
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data.write(buffer);
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}
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// calc num max data.
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var totalDataCount = 0;
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for (var i = 0; i < rsBlocks.length; i++) {
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totalDataCount += rsBlocks[i].dataCount;
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}
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if (buffer.getLengthInBits() > totalDataCount * 8) {
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throw new Error("code length overflow. ("
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+ buffer.getLengthInBits()
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+ ">"
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+ totalDataCount * 8
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+ ")");
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}
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// end code
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if (buffer.getLengthInBits() + 4 <= totalDataCount * 8) {
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buffer.put(0, 4);
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}
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// padding
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while (buffer.getLengthInBits() % 8 != 0) {
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buffer.putBit(false);
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}
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// padding
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while (true) {
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if (buffer.getLengthInBits() >= totalDataCount * 8) {
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break;
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}
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buffer.put(QRCode.PAD0, 8);
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if (buffer.getLengthInBits() >= totalDataCount * 8) {
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break;
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}
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buffer.put(QRCode.PAD1, 8);
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}
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return QRCode.createBytes(buffer, rsBlocks);
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}
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QRCode.createBytes = function(buffer, rsBlocks) {
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var offset = 0;
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var maxDcCount = 0;
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var maxEcCount = 0;
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var dcdata = new Array(rsBlocks.length);
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var ecdata = new Array(rsBlocks.length);
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for (var r = 0; r < rsBlocks.length; r++) {
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var dcCount = rsBlocks[r].dataCount;
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var ecCount = rsBlocks[r].totalCount - dcCount;
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maxDcCount = Math.max(maxDcCount, dcCount);
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maxEcCount = Math.max(maxEcCount, ecCount);
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dcdata[r] = new Array(dcCount);
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for (var i = 0; i < dcdata[r].length; i++) {
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dcdata[r][i] = 0xff & buffer.buffer[i + offset];
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}
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offset += dcCount;
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var rsPoly = QRUtil.getErrorCorrectPolynomial(ecCount);
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var rawPoly = new QRPolynomial(dcdata[r], rsPoly.getLength() - 1);
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var modPoly = rawPoly.mod(rsPoly);
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ecdata[r] = new Array(rsPoly.getLength() - 1);
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for (var i = 0; i < ecdata[r].length; i++) {
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var modIndex = i + modPoly.getLength() - ecdata[r].length;
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ecdata[r][i] = (modIndex >= 0)? modPoly.get(modIndex) : 0;
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}
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}
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var totalCodeCount = 0;
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for (var i = 0; i < rsBlocks.length; i++) {
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totalCodeCount += rsBlocks[i].totalCount;
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}
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var data = new Array(totalCodeCount);
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var index = 0;
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for (var i = 0; i < maxDcCount; i++) {
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for (var r = 0; r < rsBlocks.length; r++) {
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if (i < dcdata[r].length) {
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data[index++] = dcdata[r][i];
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}
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}
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}
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for (var i = 0; i < maxEcCount; i++) {
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for (var r = 0; r < rsBlocks.length; r++) {
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if (i < ecdata[r].length) {
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data[index++] = ecdata[r][i];
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}
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}
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}
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return data;
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}
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//---------------------------------------------------------------------
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// QRMode
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//---------------------------------------------------------------------
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var QRMode = {
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MODE_NUMBER : 1 << 0,
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MODE_ALPHA_NUM : 1 << 1,
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MODE_8BIT_BYTE : 1 << 2,
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MODE_KANJI : 1 << 3
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};
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//---------------------------------------------------------------------
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// QRErrorCorrectLevel
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//---------------------------------------------------------------------
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var QRErrorCorrectLevel = {
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L : 1,
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M : 0,
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Q : 3,
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H : 2
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};
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//---------------------------------------------------------------------
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// QRMaskPattern
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//---------------------------------------------------------------------
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var QRMaskPattern = {
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PATTERN000 : 0,
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PATTERN001 : 1,
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PATTERN010 : 2,
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PATTERN011 : 3,
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PATTERN100 : 4,
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PATTERN101 : 5,
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PATTERN110 : 6,
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PATTERN111 : 7
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};
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//---------------------------------------------------------------------
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// QRUtil
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//---------------------------------------------------------------------
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|
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var QRUtil = {
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PATTERN_POSITION_TABLE : [
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[],
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[6, 18],
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[6, 22],
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[6, 26],
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[6, 30],
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[6, 34],
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[6, 22, 38],
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[6, 24, 42],
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[6, 26, 46],
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[6, 28, 50],
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[6, 30, 54],
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[6, 32, 58],
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[6, 34, 62],
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[6, 26, 46, 66],
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[6, 26, 48, 70],
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[6, 26, 50, 74],
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[6, 30, 54, 78],
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[6, 30, 56, 82],
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[6, 30, 58, 86],
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[6, 34, 62, 90],
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[6, 28, 50, 72, 94],
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[6, 26, 50, 74, 98],
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[6, 30, 54, 78, 102],
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[6, 28, 54, 80, 106],
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[6, 32, 58, 84, 110],
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[6, 30, 58, 86, 114],
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[6, 34, 62, 90, 118],
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[6, 26, 50, 74, 98, 122],
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[6, 30, 54, 78, 102, 126],
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[6, 26, 52, 78, 104, 130],
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[6, 30, 56, 82, 108, 134],
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[6, 34, 60, 86, 112, 138],
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[6, 30, 58, 86, 114, 142],
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[6, 34, 62, 90, 118, 146],
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[6, 30, 54, 78, 102, 126, 150],
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[6, 24, 50, 76, 102, 128, 154],
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[6, 28, 54, 80, 106, 132, 158],
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[6, 32, 58, 84, 110, 136, 162],
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[6, 26, 54, 82, 110, 138, 166],
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[6, 30, 58, 86, 114, 142, 170]
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],
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G15 : (1 << 10) | (1 << 8) | (1 << 5) | (1 << 4) | (1 << 2) | (1 << 1) | (1 << 0),
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G18 : (1 << 12) | (1 << 11) | (1 << 10) | (1 << 9) | (1 << 8) | (1 << 5) | (1 << 2) | (1 << 0),
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G15_MASK : (1 << 14) | (1 << 12) | (1 << 10) | (1 << 4) | (1 << 1),
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|
|
getBCHTypeInfo : function(data) {
|
|
var d = data << 10;
|
|
while (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G15) >= 0) {
|
|
d ^= (QRUtil.G15 << (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G15) ) );
|
|
}
|
|
return ( (data << 10) | d) ^ QRUtil.G15_MASK;
|
|
},
|
|
|
|
getBCHTypeNumber : function(data) {
|
|
var d = data << 12;
|
|
while (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G18) >= 0) {
|
|
d ^= (QRUtil.G18 << (QRUtil.getBCHDigit(d) - QRUtil.getBCHDigit(QRUtil.G18) ) );
|
|
}
|
|
return (data << 12) | d;
|
|
},
|
|
|
|
getBCHDigit : function(data) {
|
|
|
|
var digit = 0;
|
|
|
|
while (data != 0) {
|
|
digit++;
|
|
data >>>= 1;
|
|
}
|
|
|
|
return digit;
|
|
},
|
|
|
|
getPatternPosition : function(typeNumber) {
|
|
return QRUtil.PATTERN_POSITION_TABLE[typeNumber - 1];
|
|
},
|
|
|
|
getMask : function(maskPattern, i, j) {
|
|
|
|
switch (maskPattern) {
|
|
|
|
case QRMaskPattern.PATTERN000 : return (i + j) % 2 == 0;
|
|
case QRMaskPattern.PATTERN001 : return i % 2 == 0;
|
|
case QRMaskPattern.PATTERN010 : return j % 3 == 0;
|
|
case QRMaskPattern.PATTERN011 : return (i + j) % 3 == 0;
|
|
case QRMaskPattern.PATTERN100 : return (Math.floor(i / 2) + Math.floor(j / 3) ) % 2 == 0;
|
|
case QRMaskPattern.PATTERN101 : return (i * j) % 2 + (i * j) % 3 == 0;
|
|
case QRMaskPattern.PATTERN110 : return ( (i * j) % 2 + (i * j) % 3) % 2 == 0;
|
|
case QRMaskPattern.PATTERN111 : return ( (i * j) % 3 + (i + j) % 2) % 2 == 0;
|
|
|
|
default :
|
|
throw new Error("bad maskPattern:" + maskPattern);
|
|
}
|
|
},
|
|
|
|
getErrorCorrectPolynomial : function(errorCorrectLength) {
|
|
|
|
var a = new QRPolynomial([1], 0);
|
|
|
|
for (var i = 0; i < errorCorrectLength; i++) {
|
|
a = a.multiply(new QRPolynomial([1, QRMath.gexp(i)], 0) );
|
|
}
|
|
|
|
return a;
|
|
},
|
|
|
|
getLengthInBits : function(mode, type) {
|
|
|
|
if (1 <= type && type < 10) {
|
|
|
|
// 1 - 9
|
|
|
|
switch(mode) {
|
|
case QRMode.MODE_NUMBER : return 10;
|
|
case QRMode.MODE_ALPHA_NUM : return 9;
|
|
case QRMode.MODE_8BIT_BYTE : return 8;
|
|
case QRMode.MODE_KANJI : return 8;
|
|
default :
|
|
throw new Error("mode:" + mode);
|
|
}
|
|
|
|
} else if (type < 27) {
|
|
|
|
// 10 - 26
|
|
|
|
switch(mode) {
|
|
case QRMode.MODE_NUMBER : return 12;
|
|
case QRMode.MODE_ALPHA_NUM : return 11;
|
|
case QRMode.MODE_8BIT_BYTE : return 16;
|
|
case QRMode.MODE_KANJI : return 10;
|
|
default :
|
|
throw new Error("mode:" + mode);
|
|
}
|
|
|
|
} else if (type < 41) {
|
|
|
|
// 27 - 40
|
|
|
|
switch(mode) {
|
|
case QRMode.MODE_NUMBER : return 14;
|
|
case QRMode.MODE_ALPHA_NUM : return 13;
|
|
case QRMode.MODE_8BIT_BYTE : return 16;
|
|
case QRMode.MODE_KANJI : return 12;
|
|
default :
|
|
throw new Error("mode:" + mode);
|
|
}
|
|
|
|
} else {
|
|
throw new Error("type:" + type);
|
|
}
|
|
},
|
|
|
|
getLostPoint : function(qrCode) {
|
|
|
|
var moduleCount = qrCode.getModuleCount();
|
|
|
|
var lostPoint = 0;
|
|
|
|
// LEVEL1
|
|
|
|
for (var row = 0; row < moduleCount; row++) {
|
|
|
|
for (var col = 0; col < moduleCount; col++) {
|
|
|
|
var sameCount = 0;
|
|
var dark = qrCode.isDark(row, col);
|
|
|
|
for (var r = -1; r <= 1; r++) {
|
|
|
|
if (row + r < 0 || moduleCount <= row + r) {
|
|
continue;
|
|
}
|
|
|
|
for (var c = -1; c <= 1; c++) {
|
|
|
|
if (col + c < 0 || moduleCount <= col + c) {
|
|
continue;
|
|
}
|
|
|
|
if (r == 0 && c == 0) {
|
|
continue;
|
|
}
|
|
|
|
if (dark == qrCode.isDark(row + r, col + c) ) {
|
|
sameCount++;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (sameCount > 5) {
|
|
lostPoint += (3 + sameCount - 5);
|
|
}
|
|
}
|
|
}
|
|
|
|
// LEVEL2
|
|
|
|
for (var row = 0; row < moduleCount - 1; row++) {
|
|
for (var col = 0; col < moduleCount - 1; col++) {
|
|
var count = 0;
|
|
if (qrCode.isDark(row, col ) ) count++;
|
|
if (qrCode.isDark(row + 1, col ) ) count++;
|
|
if (qrCode.isDark(row, col + 1) ) count++;
|
|
if (qrCode.isDark(row + 1, col + 1) ) count++;
|
|
if (count == 0 || count == 4) {
|
|
lostPoint += 3;
|
|
}
|
|
}
|
|
}
|
|
|
|
// LEVEL3
|
|
|
|
for (var row = 0; row < moduleCount; row++) {
|
|
for (var col = 0; col < moduleCount - 6; col++) {
|
|
if (qrCode.isDark(row, col)
|
|
&& !qrCode.isDark(row, col + 1)
|
|
&& qrCode.isDark(row, col + 2)
|
|
&& qrCode.isDark(row, col + 3)
|
|
&& qrCode.isDark(row, col + 4)
|
|
&& !qrCode.isDark(row, col + 5)
|
|
&& qrCode.isDark(row, col + 6) ) {
|
|
lostPoint += 40;
|
|
}
|
|
}
|
|
}
|
|
|
|
for (var col = 0; col < moduleCount; col++) {
|
|
for (var row = 0; row < moduleCount - 6; row++) {
|
|
if (qrCode.isDark(row, col)
|
|
&& !qrCode.isDark(row + 1, col)
|
|
&& qrCode.isDark(row + 2, col)
|
|
&& qrCode.isDark(row + 3, col)
|
|
&& qrCode.isDark(row + 4, col)
|
|
&& !qrCode.isDark(row + 5, col)
|
|
&& qrCode.isDark(row + 6, col) ) {
|
|
lostPoint += 40;
|
|
}
|
|
}
|
|
}
|
|
|
|
// LEVEL4
|
|
|
|
var darkCount = 0;
|
|
|
|
for (var col = 0; col < moduleCount; col++) {
|
|
for (var row = 0; row < moduleCount; row++) {
|
|
if (qrCode.isDark(row, col) ) {
|
|
darkCount++;
|
|
}
|
|
}
|
|
}
|
|
|
|
var ratio = Math.abs(100 * darkCount / moduleCount / moduleCount - 50) / 5;
|
|
lostPoint += ratio * 10;
|
|
|
|
return lostPoint;
|
|
}
|
|
|
|
};
|
|
|
|
|
|
//---------------------------------------------------------------------
|
|
// QRMath
|
|
//---------------------------------------------------------------------
|
|
|
|
var QRMath = {
|
|
|
|
glog : function(n) {
|
|
|
|
if (n < 1) {
|
|
throw new Error("glog(" + n + ")");
|
|
}
|
|
|
|
return QRMath.LOG_TABLE[n];
|
|
},
|
|
|
|
gexp : function(n) {
|
|
|
|
while (n < 0) {
|
|
n += 255;
|
|
}
|
|
|
|
while (n >= 256) {
|
|
n -= 255;
|
|
}
|
|
|
|
return QRMath.EXP_TABLE[n];
|
|
},
|
|
|
|
EXP_TABLE : new Array(256),
|
|
|
|
LOG_TABLE : new Array(256)
|
|
|
|
};
|
|
|
|
for (var i = 0; i < 8; i++) {
|
|
QRMath.EXP_TABLE[i] = 1 << i;
|
|
}
|
|
for (var i = 8; i < 256; i++) {
|
|
QRMath.EXP_TABLE[i] = QRMath.EXP_TABLE[i - 4]
|
|
^ QRMath.EXP_TABLE[i - 5]
|
|
^ QRMath.EXP_TABLE[i - 6]
|
|
^ QRMath.EXP_TABLE[i - 8];
|
|
}
|
|
for (var i = 0; i < 255; i++) {
|
|
QRMath.LOG_TABLE[QRMath.EXP_TABLE[i] ] = i;
|
|
}
|
|
|
|
//---------------------------------------------------------------------
|
|
// QRPolynomial
|
|
//---------------------------------------------------------------------
|
|
|
|
function QRPolynomial(num, shift) {
|
|
|
|
if (num.length == undefined) {
|
|
throw new Error(num.length + "/" + shift);
|
|
}
|
|
|
|
var offset = 0;
|
|
|
|
while (offset < num.length && num[offset] == 0) {
|
|
offset++;
|
|
}
|
|
|
|
this.num = new Array(num.length - offset + shift);
|
|
for (var i = 0; i < num.length - offset; i++) {
|
|
this.num[i] = num[i + offset];
|
|
}
|
|
}
|
|
|
|
QRPolynomial.prototype = {
|
|
|
|
get : function(index) {
|
|
return this.num[index];
|
|
},
|
|
|
|
getLength : function() {
|
|
return this.num.length;
|
|
},
|
|
|
|
multiply : function(e) {
|
|
|
|
var num = new Array(this.getLength() + e.getLength() - 1);
|
|
|
|
for (var i = 0; i < this.getLength(); i++) {
|
|
for (var j = 0; j < e.getLength(); j++) {
|
|
num[i + j] ^= QRMath.gexp(QRMath.glog(this.get(i) ) + QRMath.glog(e.get(j) ) );
|
|
}
|
|
}
|
|
|
|
return new QRPolynomial(num, 0);
|
|
},
|
|
|
|
mod : function(e) {
|
|
|
|
if (this.getLength() - e.getLength() < 0) {
|
|
return this;
|
|
}
|
|
|
|
var ratio = QRMath.glog(this.get(0) ) - QRMath.glog(e.get(0) );
|
|
|
|
var num = new Array(this.getLength() );
|
|
|
|
for (var i = 0; i < this.getLength(); i++) {
|
|
num[i] = this.get(i);
|
|
}
|
|
|
|
for (var i = 0; i < e.getLength(); i++) {
|
|
num[i] ^= QRMath.gexp(QRMath.glog(e.get(i) ) + ratio);
|
|
}
|
|
|
|
// recursive call
|
|
return new QRPolynomial(num, 0).mod(e);
|
|
}
|
|
};
|
|
|
|
//---------------------------------------------------------------------
|
|
// QRRSBlock
|
|
//---------------------------------------------------------------------
|
|
|
|
function QRRSBlock(totalCount, dataCount) {
|
|
this.totalCount = totalCount;
|
|
this.dataCount = dataCount;
|
|
}
|
|
|
|
QRRSBlock.RS_BLOCK_TABLE = [
|
|
|
|
// L
|
|
// M
|
|
// Q
|
|
// H
|
|
|
|
// 1
|
|
[1, 26, 19],
|
|
[1, 26, 16],
|
|
[1, 26, 13],
|
|
[1, 26, 9],
|
|
|
|
// 2
|
|
[1, 44, 34],
|
|
[1, 44, 28],
|
|
[1, 44, 22],
|
|
[1, 44, 16],
|
|
|
|
// 3
|
|
[1, 70, 55],
|
|
[1, 70, 44],
|
|
[2, 35, 17],
|
|
[2, 35, 13],
|
|
|
|
// 4
|
|
[1, 100, 80],
|
|
[2, 50, 32],
|
|
[2, 50, 24],
|
|
[4, 25, 9],
|
|
|
|
// 5
|
|
[1, 134, 108],
|
|
[2, 67, 43],
|
|
[2, 33, 15, 2, 34, 16],
|
|
[2, 33, 11, 2, 34, 12],
|
|
|
|
// 6
|
|
[2, 86, 68],
|
|
[4, 43, 27],
|
|
[4, 43, 19],
|
|
[4, 43, 15],
|
|
|
|
// 7
|
|
[2, 98, 78],
|
|
[4, 49, 31],
|
|
[2, 32, 14, 4, 33, 15],
|
|
[4, 39, 13, 1, 40, 14],
|
|
|
|
// 8
|
|
[2, 121, 97],
|
|
[2, 60, 38, 2, 61, 39],
|
|
[4, 40, 18, 2, 41, 19],
|
|
[4, 40, 14, 2, 41, 15],
|
|
|
|
// 9
|
|
[2, 146, 116],
|
|
[3, 58, 36, 2, 59, 37],
|
|
[4, 36, 16, 4, 37, 17],
|
|
[4, 36, 12, 4, 37, 13],
|
|
|
|
// 10
|
|
[2, 86, 68, 2, 87, 69],
|
|
[4, 69, 43, 1, 70, 44],
|
|
[6, 43, 19, 2, 44, 20],
|
|
[6, 43, 15, 2, 44, 16],
|
|
|
|
// 11
|
|
[4, 101, 81],
|
|
[1, 80, 50, 4, 81, 51],
|
|
[4, 50, 22, 4, 51, 23],
|
|
[3, 36, 12, 8, 37, 13],
|
|
|
|
// 12
|
|
[2, 116, 92, 2, 117, 93],
|
|
[6, 58, 36, 2, 59, 37],
|
|
[4, 46, 20, 6, 47, 21],
|
|
[7, 42, 14, 4, 43, 15],
|
|
|
|
// 13
|
|
[4, 133, 107],
|
|
[8, 59, 37, 1, 60, 38],
|
|
[8, 44, 20, 4, 45, 21],
|
|
[12, 33, 11, 4, 34, 12],
|
|
|
|
// 14
|
|
[3, 145, 115, 1, 146, 116],
|
|
[4, 64, 40, 5, 65, 41],
|
|
[11, 36, 16, 5, 37, 17],
|
|
[11, 36, 12, 5, 37, 13],
|
|
|
|
// 15
|
|
[5, 109, 87, 1, 110, 88],
|
|
[5, 65, 41, 5, 66, 42],
|
|
[5, 54, 24, 7, 55, 25],
|
|
[11, 36, 12],
|
|
|
|
// 16
|
|
[5, 122, 98, 1, 123, 99],
|
|
[7, 73, 45, 3, 74, 46],
|
|
[15, 43, 19, 2, 44, 20],
|
|
[3, 45, 15, 13, 46, 16],
|
|
|
|
// 17
|
|
[1, 135, 107, 5, 136, 108],
|
|
[10, 74, 46, 1, 75, 47],
|
|
[1, 50, 22, 15, 51, 23],
|
|
[2, 42, 14, 17, 43, 15],
|
|
|
|
// 18
|
|
[5, 150, 120, 1, 151, 121],
|
|
[9, 69, 43, 4, 70, 44],
|
|
[17, 50, 22, 1, 51, 23],
|
|
[2, 42, 14, 19, 43, 15],
|
|
|
|
// 19
|
|
[3, 141, 113, 4, 142, 114],
|
|
[3, 70, 44, 11, 71, 45],
|
|
[17, 47, 21, 4, 48, 22],
|
|
[9, 39, 13, 16, 40, 14],
|
|
|
|
// 20
|
|
[3, 135, 107, 5, 136, 108],
|
|
[3, 67, 41, 13, 68, 42],
|
|
[15, 54, 24, 5, 55, 25],
|
|
[15, 43, 15, 10, 44, 16],
|
|
|
|
// 21
|
|
[4, 144, 116, 4, 145, 117],
|
|
[17, 68, 42],
|
|
[17, 50, 22, 6, 51, 23],
|
|
[19, 46, 16, 6, 47, 17],
|
|
|
|
// 22
|
|
[2, 139, 111, 7, 140, 112],
|
|
[17, 74, 46],
|
|
[7, 54, 24, 16, 55, 25],
|
|
[34, 37, 13],
|
|
|
|
// 23
|
|
[4, 151, 121, 5, 152, 122],
|
|
[4, 75, 47, 14, 76, 48],
|
|
[11, 54, 24, 14, 55, 25],
|
|
[16, 45, 15, 14, 46, 16],
|
|
|
|
// 24
|
|
[6, 147, 117, 4, 148, 118],
|
|
[6, 73, 45, 14, 74, 46],
|
|
[11, 54, 24, 16, 55, 25],
|
|
[30, 46, 16, 2, 47, 17],
|
|
|
|
// 25
|
|
[8, 132, 106, 4, 133, 107],
|
|
[8, 75, 47, 13, 76, 48],
|
|
[7, 54, 24, 22, 55, 25],
|
|
[22, 45, 15, 13, 46, 16],
|
|
|
|
// 26
|
|
[10, 142, 114, 2, 143, 115],
|
|
[19, 74, 46, 4, 75, 47],
|
|
[28, 50, 22, 6, 51, 23],
|
|
[33, 46, 16, 4, 47, 17],
|
|
|
|
// 27
|
|
[8, 152, 122, 4, 153, 123],
|
|
[22, 73, 45, 3, 74, 46],
|
|
[8, 53, 23, 26, 54, 24],
|
|
[12, 45, 15, 28, 46, 16],
|
|
|
|
// 28
|
|
[3, 147, 117, 10, 148, 118],
|
|
[3, 73, 45, 23, 74, 46],
|
|
[4, 54, 24, 31, 55, 25],
|
|
[11, 45, 15, 31, 46, 16],
|
|
|
|
// 29
|
|
[7, 146, 116, 7, 147, 117],
|
|
[21, 73, 45, 7, 74, 46],
|
|
[1, 53, 23, 37, 54, 24],
|
|
[19, 45, 15, 26, 46, 16],
|
|
|
|
// 30
|
|
[5, 145, 115, 10, 146, 116],
|
|
[19, 75, 47, 10, 76, 48],
|
|
[15, 54, 24, 25, 55, 25],
|
|
[23, 45, 15, 25, 46, 16],
|
|
|
|
// 31
|
|
[13, 145, 115, 3, 146, 116],
|
|
[2, 74, 46, 29, 75, 47],
|
|
[42, 54, 24, 1, 55, 25],
|
|
[23, 45, 15, 28, 46, 16],
|
|
|
|
// 32
|
|
[17, 145, 115],
|
|
[10, 74, 46, 23, 75, 47],
|
|
[10, 54, 24, 35, 55, 25],
|
|
[19, 45, 15, 35, 46, 16],
|
|
|
|
// 33
|
|
[17, 145, 115, 1, 146, 116],
|
|
[14, 74, 46, 21, 75, 47],
|
|
[29, 54, 24, 19, 55, 25],
|
|
[11, 45, 15, 46, 46, 16],
|
|
|
|
// 34
|
|
[13, 145, 115, 6, 146, 116],
|
|
[14, 74, 46, 23, 75, 47],
|
|
[44, 54, 24, 7, 55, 25],
|
|
[59, 46, 16, 1, 47, 17],
|
|
|
|
// 35
|
|
[12, 151, 121, 7, 152, 122],
|
|
[12, 75, 47, 26, 76, 48],
|
|
[39, 54, 24, 14, 55, 25],
|
|
[22, 45, 15, 41, 46, 16],
|
|
|
|
// 36
|
|
[6, 151, 121, 14, 152, 122],
|
|
[6, 75, 47, 34, 76, 48],
|
|
[46, 54, 24, 10, 55, 25],
|
|
[2, 45, 15, 64, 46, 16],
|
|
|
|
// 37
|
|
[17, 152, 122, 4, 153, 123],
|
|
[29, 74, 46, 14, 75, 47],
|
|
[49, 54, 24, 10, 55, 25],
|
|
[24, 45, 15, 46, 46, 16],
|
|
|
|
// 38
|
|
[4, 152, 122, 18, 153, 123],
|
|
[13, 74, 46, 32, 75, 47],
|
|
[48, 54, 24, 14, 55, 25],
|
|
[42, 45, 15, 32, 46, 16],
|
|
|
|
// 39
|
|
[20, 147, 117, 4, 148, 118],
|
|
[40, 75, 47, 7, 76, 48],
|
|
[43, 54, 24, 22, 55, 25],
|
|
[10, 45, 15, 67, 46, 16],
|
|
|
|
// 40
|
|
[19, 148, 118, 6, 149, 119],
|
|
[18, 75, 47, 31, 76, 48],
|
|
[34, 54, 24, 34, 55, 25],
|
|
[20, 45, 15, 61, 46, 16]
|
|
];
|
|
|
|
QRRSBlock.getRSBlocks = function(typeNumber, errorCorrectLevel) {
|
|
|
|
var rsBlock = QRRSBlock.getRsBlockTable(typeNumber, errorCorrectLevel);
|
|
|
|
if (rsBlock == undefined) {
|
|
throw new Error("bad rs block @ typeNumber:" + typeNumber + "/errorCorrectLevel:" + errorCorrectLevel);
|
|
}
|
|
|
|
var length = rsBlock.length / 3;
|
|
|
|
var list = new Array();
|
|
|
|
for (var i = 0; i < length; i++) {
|
|
|
|
var count = rsBlock[i * 3 + 0];
|
|
var totalCount = rsBlock[i * 3 + 1];
|
|
var dataCount = rsBlock[i * 3 + 2];
|
|
|
|
for (var j = 0; j < count; j++) {
|
|
list.push(new QRRSBlock(totalCount, dataCount) );
|
|
}
|
|
}
|
|
|
|
return list;
|
|
}
|
|
|
|
QRRSBlock.getRsBlockTable = function(typeNumber, errorCorrectLevel) {
|
|
|
|
switch(errorCorrectLevel) {
|
|
case QRErrorCorrectLevel.L :
|
|
return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 0];
|
|
case QRErrorCorrectLevel.M :
|
|
return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 1];
|
|
case QRErrorCorrectLevel.Q :
|
|
return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 2];
|
|
case QRErrorCorrectLevel.H :
|
|
return QRRSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 3];
|
|
default :
|
|
return undefined;
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------------------
|
|
// QRBitBuffer
|
|
//---------------------------------------------------------------------
|
|
|
|
function QRBitBuffer() {
|
|
this.buffer = new Array();
|
|
this.length = 0;
|
|
}
|
|
|
|
QRBitBuffer.prototype = {
|
|
|
|
get : function(index) {
|
|
var bufIndex = Math.floor(index / 8);
|
|
return ( (this.buffer[bufIndex] >>> (7 - index % 8) ) & 1) == 1;
|
|
},
|
|
|
|
put : function(num, length) {
|
|
for (var i = 0; i < length; i++) {
|
|
this.putBit( ( (num >>> (length - i - 1) ) & 1) == 1);
|
|
}
|
|
},
|
|
|
|
getLengthInBits : function() {
|
|
return this.length;
|
|
},
|
|
|
|
putBit : function(bit) {
|
|
|
|
var bufIndex = Math.floor(this.length / 8);
|
|
if (this.buffer.length <= bufIndex) {
|
|
this.buffer.push(0);
|
|
}
|
|
|
|
if (bit) {
|
|
this.buffer[bufIndex] |= (0x80 >>> (this.length % 8) );
|
|
}
|
|
|
|
this.length++;
|
|
}
|
|
};
|