qrcode.js

//---------------------------------------------------------------------
// QRCode for JavaScript
//
// Copyright (c) 2009 Kazuhiko Arase
//
// URL: http://www.d-project.com/
//
// Licensed under the MIT license:
//   http://www.opensource.org/licenses/mit-license.php
//
// The word "QR Code" is registered trademark of 
// DENSO WAVE INCORPORATED
//   http://www.denso-wave.com/qrcode/faqpatent-e.html
//
//---------------------------------------------------------------------

(function () {
	//---------------------------------------------------------------------
	// QRCode
	//---------------------------------------------------------------------

	var QRCode = window.QRCode = function (typeNumber, errorCorrectLevel) {
		this.typeNumber = typeNumber;
		this.errorCorrectLevel = errorCorrectLevel;
		this.modules = null;
		this.moduleCount = 0;
		this.dataCache = null;
		this.dataList = new Array();
	}

	QRCode.prototype = {

		addData: function (data) {
			var newData = new QRCode.QR8bitByte(data);
			this.dataList.push(newData);
			this.dataCache = null;
		},

		isDark: function (row, col) {
			if (row < 0 || this.moduleCount <= row || col < 0 || this.moduleCount <= col) {
				throw new Error(row + "," + col);
			}
			return this.modules[row][col];
		},

		getModuleCount: function () {
			return this.moduleCount;
		},

		make: function () {
			this.makeImpl(false, this.getBestMaskPattern());
		},

		makeImpl: function (test, maskPattern) {

			this.moduleCount = this.typeNumber * 4 + 17;
			this.modules = new Array(this.moduleCount);

			for (var row = 0; row < this.moduleCount; row++) {

				this.modules[row] = new Array(this.moduleCount);

				for (var col = 0; col < this.moduleCount; col++) {
					this.modules[row][col] = null; //(col + row) % 3;
				}
			}

			this.setupPositionProbePattern(0, 0);
			this.setupPositionProbePattern(this.moduleCount - 7, 0);
			this.setupPositionProbePattern(0, this.moduleCount - 7);
			this.setupPositionAdjustPattern();
			this.setupTimingPattern();
			this.setupTypeInfo(test, maskPattern);

			if (this.typeNumber >= 7) {
				this.setupTypeNumber(test);
			}

			if (this.dataCache == null) {
				this.dataCache = QRCode.createData(this.typeNumber, this.errorCorrectLevel, this.dataList);
			}

			this.mapData(this.dataCache, maskPattern);
		},

		setupPositionProbePattern: function (row, col) {

			for (var r = -1; r <= 7; r++) {

				if (row + r <= -1 || this.moduleCount <= row + r) continue;

				for (var c = -1; c <= 7; c++) {

					if (col + c <= -1 || this.moduleCount <= col + c) continue;

					if ((0 <= r && r <= 6 && (c == 0 || c == 6))
						|| (0 <= c && c <= 6 && (r == 0 || r == 6))
						|| (2 <= r && r <= 4 && 2 <= c && c <= 4)) {
						this.modules[row + r][col + c] = true;
					} else {
						this.modules[row + r][col + c] = false;
					}
				}
			}
		},

		getBestMaskPattern: function () {

			var minLostPoint = 0;
			var pattern = 0;

			for (var i = 0; i < 8; i++) {

				this.makeImpl(true, i);

				var lostPoint = QRCode.Util.getLostPoint(this);

				if (i == 0 || minLostPoint > lostPoint) {
					minLostPoint = lostPoint;
					pattern = i;
				}
			}

			return pattern;
		},

		createMovieClip: function (target_mc, instance_name, depth) {

			var qr_mc = target_mc.createEmptyMovieClip(instance_name, depth);
			var cs = 1;

			this.make();

			for (var row = 0; row < this.modules.length; row++) {

				var y = row * cs;

				for (var col = 0; col < this.modules[row].length; col++) {

					var x = col * cs;
					var dark = this.modules[row][col];

					if (dark) {
						qr_mc.beginFill(0, 100);
						qr_mc.moveTo(x, y);
						qr_mc.lineTo(x + cs, y);
						qr_mc.lineTo(x + cs, y + cs);
						qr_mc.lineTo(x, y + cs);
						qr_mc.endFill();
					}
				}
			}

			return qr_mc;
		},

		setupTimingPattern: function () {

			for (var r = 8; r < this.moduleCount - 8; r++) {
				if (this.modules[r][6] != null) {
					continue;
				}
				this.modules[r][6] = (r % 2 == 0);
			}

			for (var c = 8; c < this.moduleCount - 8; c++) {
				if (this.modules[6][c] != null) {
					continue;
				}
				this.modules[6][c] = (c % 2 == 0);
			}
		},

		setupPositionAdjustPattern: function () {

			var pos = QRCode.Util.getPatternPosition(this.typeNumber);

			for (var i = 0; i < pos.length; i++) {

				for (var j = 0; j < pos.length; j++) {

					var row = pos[i];
					var col = pos[j];

					if (this.modules[row][col] != null) {
						continue;
					}

					for (var r = -2; r <= 2; r++) {

						for (var c = -2; c <= 2; c++) {

							if (r == -2 || r == 2 || c == -2 || c == 2
								|| (r == 0 && c == 0)) {
								this.modules[row + r][col + c] = true;
							} else {
								this.modules[row + r][col + c] = false;
							}
						}
					}
				}
			}
		},

		setupTypeNumber: function (test) {

			var bits = QRCode.Util.getBCHTypeNumber(this.typeNumber);

			for (var i = 0; i < 18; i++) {
				var mod = (!test && ((bits >> i) & 1) == 1);
				this.modules[Math.floor(i / 3)][i % 3 + this.moduleCount - 8 - 3] = mod;
			}

			for (var i = 0; i < 18; i++) {
				var mod = (!test && ((bits >> i) & 1) == 1);
				this.modules[i % 3 + this.moduleCount - 8 - 3][Math.floor(i / 3)] = mod;
			}
		},

		setupTypeInfo: function (test, maskPattern) {

			var data = (this.errorCorrectLevel << 3) | maskPattern;
			var bits = QRCode.Util.getBCHTypeInfo(data);

			// vertical		
			for (var i = 0; i < 15; i++) {

				var mod = (!test && ((bits >> i) & 1) == 1);

				if (i < 6) {
					this.modules[i][8] = mod;
				} else if (i < 8) {
					this.modules[i + 1][8] = mod;
				} else {
					this.modules[this.moduleCount - 15 + i][8] = mod;
				}
			}

			// horizontal
			for (var i = 0; i < 15; i++) {

				var mod = (!test && ((bits >> i) & 1) == 1);

				if (i < 8) {
					this.modules[8][this.moduleCount - i - 1] = mod;
				} else if (i < 9) {
					this.modules[8][15 - i - 1 + 1] = mod;
				} else {
					this.modules[8][15 - i - 1] = mod;
				}
			}

			// fixed module
			this.modules[this.moduleCount - 8][8] = (!test);

		},

		mapData: function (data, maskPattern) {

			var inc = -1;
			var row = this.moduleCount - 1;
			var bitIndex = 7;
			var byteIndex = 0;

			for (var col = this.moduleCount - 1; col > 0; col -= 2) {

				if (col == 6) col--;

				while (true) {

					for (var c = 0; c < 2; c++) {

						if (this.modules[row][col - c] == null) {

							var dark = false;

							if (byteIndex < data.length) {
								dark = (((data[byteIndex] >>> bitIndex) & 1) == 1);
							}

							var mask = QRCode.Util.getMask(maskPattern, row, col - c);

							if (mask) {
								dark = !dark;
							}

							this.modules[row][col - c] = dark;
							bitIndex--;

							if (bitIndex == -1) {
								byteIndex++;
								bitIndex = 7;
							}
						}
					}

					row += inc;

					if (row < 0 || this.moduleCount <= row) {
						row -= inc;
						inc = -inc;
						break;
					}
				}
			}

		}

	};

	QRCode.PAD0 = 0xEC;
	QRCode.PAD1 = 0x11;

	QRCode.createData = function (typeNumber, errorCorrectLevel, dataList) {

		var rsBlocks = QRCode.RSBlock.getRSBlocks(typeNumber, errorCorrectLevel);

		var buffer = new QRCode.BitBuffer();

		for (var i = 0; i < dataList.length; i++) {
			var data = dataList[i];
			buffer.put(data.mode, 4);
			buffer.put(data.getLength(), QRCode.Util.getLengthInBits(data.mode, typeNumber));
			data.write(buffer);
		}

		// calc num max data.
		var totalDataCount = 0;
		for (var i = 0; i < rsBlocks.length; i++) {
			totalDataCount += rsBlocks[i].dataCount;
		}

		if (buffer.getLengthInBits() > totalDataCount * 8) {
			throw new Error("code length overflow. ("
			+ buffer.getLengthInBits()
			+ ">"
			+ totalDataCount * 8
			+ ")");
		}

		// end code
		if (buffer.getLengthInBits() + 4 <= totalDataCount * 8) {
			buffer.put(0, 4);
		}

		// padding
		while (buffer.getLengthInBits() % 8 != 0) {
			buffer.putBit(false);
		}

		// padding
		while (true) {

			if (buffer.getLengthInBits() >= totalDataCount * 8) {
				break;
			}
			buffer.put(QRCode.PAD0, 8);

			if (buffer.getLengthInBits() >= totalDataCount * 8) {
				break;
			}
			buffer.put(QRCode.PAD1, 8);
		}

		return QRCode.createBytes(buffer, rsBlocks);
	};

	QRCode.createBytes = function (buffer, rsBlocks) {

		var offset = 0;

		var maxDcCount = 0;
		var maxEcCount = 0;

		var dcdata = new Array(rsBlocks.length);
		var ecdata = new Array(rsBlocks.length);

		for (var r = 0; r < rsBlocks.length; r++) {

			var dcCount = rsBlocks[r].dataCount;
			var ecCount = rsBlocks[r].totalCount - dcCount;

			maxDcCount = Math.max(maxDcCount, dcCount);
			maxEcCount = Math.max(maxEcCount, ecCount);

			dcdata[r] = new Array(dcCount);

			for (var i = 0; i < dcdata[r].length; i++) {
				dcdata[r][i] = 0xff & buffer.buffer[i + offset];
			}
			offset += dcCount;

			var rsPoly = QRCode.Util.getErrorCorrectPolynomial(ecCount);
			var rawPoly = new QRCode.Polynomial(dcdata[r], rsPoly.getLength() - 1);

			var modPoly = rawPoly.mod(rsPoly);
			ecdata[r] = new Array(rsPoly.getLength() - 1);
			for (var i = 0; i < ecdata[r].length; i++) {
				var modIndex = i + modPoly.getLength() - ecdata[r].length;
				ecdata[r][i] = (modIndex >= 0) ? modPoly.get(modIndex) : 0;
			}

		}

		var totalCodeCount = 0;
		for (var i = 0; i < rsBlocks.length; i++) {
			totalCodeCount += rsBlocks[i].totalCount;
		}

		var data = new Array(totalCodeCount);
		var index = 0;

		for (var i = 0; i < maxDcCount; i++) {
			for (var r = 0; r < rsBlocks.length; r++) {
				if (i < dcdata[r].length) {
					data[index++] = dcdata[r][i];
				}
			}
		}

		for (var i = 0; i < maxEcCount; i++) {
			for (var r = 0; r < rsBlocks.length; r++) {
				if (i < ecdata[r].length) {
					data[index++] = ecdata[r][i];
				}
			}
		}

		return data;

	};

	//---------------------------------------------------------------------
	// QR8bitByte
	//---------------------------------------------------------------------
	QRCode.QR8bitByte = function (data) {
		this.mode = QRCode.Mode.MODE_8BIT_BYTE;
		this.data = data;
	}

	QRCode.QR8bitByte.prototype = {
		getLength: function (buffer) {
			return this.data.length;
		},

		write: function (buffer) {
			for (var i = 0; i < this.data.length; i++) {
				// not JIS ...
				buffer.put(this.data.charCodeAt(i), 8);
			}
		}
	};


	//---------------------------------------------------------------------
	// QRMode
	//---------------------------------------------------------------------
	QRCode.Mode = {
		MODE_NUMBER: 1 << 0,
		MODE_ALPHA_NUM: 1 << 1,
		MODE_8BIT_BYTE: 1 << 2,
		MODE_KANJI: 1 << 3
	};

	//---------------------------------------------------------------------
	// QRErrorCorrectLevel
	//---------------------------------------------------------------------
	QRCode.ErrorCorrectLevel = {
		L: 1,
		M: 0,
		Q: 3,
		H: 2
	};


	//---------------------------------------------------------------------
	// QRMaskPattern
	//---------------------------------------------------------------------
	QRCode.MaskPattern = {
		PATTERN000: 0,
		PATTERN001: 1,
		PATTERN010: 2,
		PATTERN011: 3,
		PATTERN100: 4,
		PATTERN101: 5,
		PATTERN110: 6,
		PATTERN111: 7
	};

	//---------------------------------------------------------------------
	// QRUtil
	//---------------------------------------------------------------------

	QRCode.Util = {

		PATTERN_POSITION_TABLE: [
		[],
		[6, 18],
		[6, 22],
		[6, 26],
		[6, 30],
		[6, 34],
		[6, 22, 38],
		[6, 24, 42],
		[6, 26, 46],
		[6, 28, 50],
		[6, 30, 54],
		[6, 32, 58],
		[6, 34, 62],
		[6, 26, 46, 66],
		[6, 26, 48, 70],
		[6, 26, 50, 74],
		[6, 30, 54, 78],
		[6, 30, 56, 82],
		[6, 30, 58, 86],
		[6, 34, 62, 90],
		[6, 28, 50, 72, 94],
		[6, 26, 50, 74, 98],
		[6, 30, 54, 78, 102],
		[6, 28, 54, 80, 106],
		[6, 32, 58, 84, 110],
		[6, 30, 58, 86, 114],
		[6, 34, 62, 90, 118],
		[6, 26, 50, 74, 98, 122],
		[6, 30, 54, 78, 102, 126],
		[6, 26, 52, 78, 104, 130],
		[6, 30, 56, 82, 108, 134],
		[6, 34, 60, 86, 112, 138],
		[6, 30, 58, 86, 114, 142],
		[6, 34, 62, 90, 118, 146],
		[6, 30, 54, 78, 102, 126, 150],
		[6, 24, 50, 76, 102, 128, 154],
		[6, 28, 54, 80, 106, 132, 158],
		[6, 32, 58, 84, 110, 136, 162],
		[6, 26, 54, 82, 110, 138, 166],
		[6, 30, 58, 86, 114, 142, 170]
	],

		G15: (1 << 10) | (1 << 8) | (1 << 5) | (1 << 4) | (1 << 2) | (1 << 1) | (1 << 0),
		G18: (1 << 12) | (1 << 11) | (1 << 10) | (1 << 9) | (1 << 8) | (1 << 5) | (1 << 2) | (1 << 0),
		G15_MASK: (1 << 14) | (1 << 12) | (1 << 10) | (1 << 4) | (1 << 1),

		getBCHTypeInfo: function (data) {
			var d = data << 10;
			while (QRCode.Util.getBCHDigit(d) - QRCode.Util.getBCHDigit(QRCode.Util.G15) >= 0) {
				d ^= (QRCode.Util.G15 << (QRCode.Util.getBCHDigit(d) - QRCode.Util.getBCHDigit(QRCode.Util.G15)));
			}
			return ((data << 10) | d) ^ QRCode.Util.G15_MASK;
		},

		getBCHTypeNumber: function (data) {
			var d = data << 12;
			while (QRCode.Util.getBCHDigit(d) - QRCode.Util.getBCHDigit(QRCode.Util.G18) >= 0) {
				d ^= (QRCode.Util.G18 << (QRCode.Util.getBCHDigit(d) - QRCode.Util.getBCHDigit(QRCode.Util.G18)));
			}
			return (data << 12) | d;
		},

		getBCHDigit: function (data) {

			var digit = 0;

			while (data != 0) {
				digit++;
				data >>>= 1;
			}

			return digit;
		},

		getPatternPosition: function (typeNumber) {
			return QRCode.Util.PATTERN_POSITION_TABLE[typeNumber - 1];
		},

		getMask: function (maskPattern, i, j) {

			switch (maskPattern) {

				case QRCode.MaskPattern.PATTERN000: return (i + j) % 2 == 0;
				case QRCode.MaskPattern.PATTERN001: return i % 2 == 0;
				case QRCode.MaskPattern.PATTERN010: return j % 3 == 0;
				case QRCode.MaskPattern.PATTERN011: return (i + j) % 3 == 0;
				case QRCode.MaskPattern.PATTERN100: return (Math.floor(i / 2) + Math.floor(j / 3)) % 2 == 0;
				case QRCode.MaskPattern.PATTERN101: return (i * j) % 2 + (i * j) % 3 == 0;
				case QRCode.MaskPattern.PATTERN110: return ((i * j) % 2 + (i * j) % 3) % 2 == 0;
				case QRCode.MaskPattern.PATTERN111: return ((i * j) % 3 + (i + j) % 2) % 2 == 0;

				default:
					throw new Error("bad maskPattern:" + maskPattern);
			}
		},

		getErrorCorrectPolynomial: function (errorCorrectLength) {

			var a = new QRCode.Polynomial([1], 0);

			for (var i = 0; i < errorCorrectLength; i++) {
				a = a.multiply(new QRCode.Polynomial([1, QRCode.Math.gexp(i)], 0));
			}

			return a;
		},

		getLengthInBits: function (mode, type) {

			if (1 <= type && type < 10) {

				// 1 - 9

				switch (mode) {
					case QRCode.Mode.MODE_NUMBER: return 10;
					case QRCode.Mode.MODE_ALPHA_NUM: return 9;
					case QRCode.Mode.MODE_8BIT_BYTE: return 8;
					case QRCode.Mode.MODE_KANJI: return 8;
					default:
						throw new Error("mode:" + mode);
				}

			} else if (type < 27) {

				// 10 - 26

				switch (mode) {
					case QRCode.Mode.MODE_NUMBER: return 12;
					case QRCode.Mode.MODE_ALPHA_NUM: return 11;
					case QRCode.Mode.MODE_8BIT_BYTE: return 16;
					case QRCode.Mode.MODE_KANJI: return 10;
					default:
						throw new Error("mode:" + mode);
				}

			} else if (type < 41) {

				// 27 - 40

				switch (mode) {
					case QRCode.Mode.MODE_NUMBER: return 14;
					case QRCode.Mode.MODE_ALPHA_NUM: return 13;
					case QRCode.Mode.MODE_8BIT_BYTE: return 16;
					case QRCode.Mode.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
	//---------------------------------------------------------------------

	QRCode.Math = {

		glog: function (n) {

			if (n < 1) {
				throw new Error("glog(" + n + ")");
			}

			return QRCode.Math.LOG_TABLE[n];
		},

		gexp: function (n) {

			while (n < 0) {
				n += 255;
			}

			while (n >= 256) {
				n -= 255;
			}

			return QRCode.Math.EXP_TABLE[n];
		},

		EXP_TABLE: new Array(256),

		LOG_TABLE: new Array(256)

	};

	for (var i = 0; i < 8; i++) {
		QRCode.Math.EXP_TABLE[i] = 1 << i;
	}
	for (var i = 8; i < 256; i++) {
		QRCode.Math.EXP_TABLE[i] = QRCode.Math.EXP_TABLE[i - 4]
		^ QRCode.Math.EXP_TABLE[i - 5]
		^ QRCode.Math.EXP_TABLE[i - 6]
		^ QRCode.Math.EXP_TABLE[i - 8];
	}
	for (var i = 0; i < 255; i++) {
		QRCode.Math.LOG_TABLE[QRCode.Math.EXP_TABLE[i]] = i;
	}

	//---------------------------------------------------------------------
	// QRPolynomial
	//---------------------------------------------------------------------

	QRCode.Polynomial = function (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];
		}
	}

	QRCode.Polynomial.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] ^= QRCode.Math.gexp(QRCode.Math.glog(this.get(i)) + QRCode.Math.glog(e.get(j)));
				}
			}

			return new QRCode.Polynomial(num, 0);
		},

		mod: function (e) {

			if (this.getLength() - e.getLength() < 0) {
				return this;
			}

			var ratio = QRCode.Math.glog(this.get(0)) - QRCode.Math.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] ^= QRCode.Math.gexp(QRCode.Math.glog(e.get(i)) + ratio);
			}

			// recursive call
			return new QRCode.Polynomial(num, 0).mod(e);
		}
	};

	//---------------------------------------------------------------------
	// QRRSBlock
	//---------------------------------------------------------------------

	QRCode.RSBlock = function (totalCount, dataCount) {
		this.totalCount = totalCount;
		this.dataCount = dataCount;
	}

	QRCode.RSBlock.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]

];

	QRCode.RSBlock.getRSBlocks = function (typeNumber, errorCorrectLevel) {

		var rsBlock = QRCode.RSBlock.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 QRCode.RSBlock(totalCount, dataCount));
			}
		}

		return list;
	};

	QRCode.RSBlock.getRsBlockTable = function (typeNumber, errorCorrectLevel) {

		switch (errorCorrectLevel) {
			case QRCode.ErrorCorrectLevel.L:
				return QRCode.RSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 0];
			case QRCode.ErrorCorrectLevel.M:
				return QRCode.RSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 1];
			case QRCode.ErrorCorrectLevel.Q:
				return QRCode.RSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 2];
			case QRCode.ErrorCorrectLevel.H:
				return QRCode.RSBlock.RS_BLOCK_TABLE[(typeNumber - 1) * 4 + 3];
			default:
				return undefined;
		}
	};

	//---------------------------------------------------------------------
	// QRBitBuffer
	//---------------------------------------------------------------------

	QRCode.BitBuffer = function () {
		this.buffer = new Array();
		this.length = 0;
	}

	QRCode.BitBuffer.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++;
		}
	};
})();