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207 lines
3.6 KiB
207 lines
3.6 KiB
/*
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Ported to JavaScript by Lazar Laszlo 2011
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lazarsoft@gmail.com, www.lazarsoft.info
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*/
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/*
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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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var DataMask = {};
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DataMask.forReference = function(reference)
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{
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if (reference < 0 || reference > 7)
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{
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throw "System.ArgumentException";
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}
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return DataMask.DATA_MASKS[reference];
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}
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function DataMask000()
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{
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this.unmaskBitMatrix=function(bits, dimension)
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{
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for (var i = 0; i < dimension; i++)
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{
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for (var j = 0; j < dimension; j++)
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{
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if (this.isMasked(i, j))
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{
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bits.flip(j, i);
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}
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}
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}
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}
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this.isMasked=function( i, j)
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{
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return ((i + j) & 0x01) == 0;
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}
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}
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function DataMask001()
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{
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this.unmaskBitMatrix=function(bits, dimension)
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{
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for (var i = 0; i < dimension; i++)
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{
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for (var j = 0; j < dimension; j++)
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{
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if (this.isMasked(i, j))
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{
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bits.flip(j, i);
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}
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}
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}
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}
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this.isMasked=function( i, j)
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{
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return (i & 0x01) == 0;
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}
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}
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function DataMask010()
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{
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this.unmaskBitMatrix=function(bits, dimension)
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{
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for (var i = 0; i < dimension; i++)
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{
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for (var j = 0; j < dimension; j++)
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{
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if (this.isMasked(i, j))
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{
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bits.flip(j, i);
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}
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}
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}
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}
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this.isMasked=function( i, j)
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{
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return j % 3 == 0;
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}
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}
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function DataMask011()
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{
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this.unmaskBitMatrix=function(bits, dimension)
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{
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for (var i = 0; i < dimension; i++)
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{
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for (var j = 0; j < dimension; j++)
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{
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if (this.isMasked(i, j))
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{
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bits.flip(j, i);
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}
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}
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}
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}
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this.isMasked=function( i, j)
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{
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return (i + j) % 3 == 0;
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}
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}
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function DataMask100()
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{
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this.unmaskBitMatrix=function(bits, dimension)
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{
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for (var i = 0; i < dimension; i++)
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{
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for (var j = 0; j < dimension; j++)
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{
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if (this.isMasked(i, j))
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{
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bits.flip(j, i);
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}
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}
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}
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}
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this.isMasked=function( i, j)
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{
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return (((URShift(i, 1)) + (j / 3)) & 0x01) == 0;
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}
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}
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function DataMask101()
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{
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this.unmaskBitMatrix=function(bits, dimension)
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{
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for (var i = 0; i < dimension; i++)
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{
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for (var j = 0; j < dimension; j++)
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{
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if (this.isMasked(i, j))
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{
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bits.flip(j, i);
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}
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}
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}
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}
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this.isMasked=function( i, j)
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{
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var temp = i * j;
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return (temp & 0x01) + (temp % 3) == 0;
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}
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}
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function DataMask110()
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{
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this.unmaskBitMatrix=function(bits, dimension)
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{
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for (var i = 0; i < dimension; i++)
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{
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for (var j = 0; j < dimension; j++)
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{
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if (this.isMasked(i, j))
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{
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bits.flip(j, i);
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}
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}
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}
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}
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this.isMasked=function( i, j)
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{
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var temp = i * j;
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return (((temp & 0x01) + (temp % 3)) & 0x01) == 0;
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}
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}
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function DataMask111()
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{
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this.unmaskBitMatrix=function(bits, dimension)
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{
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for (var i = 0; i < dimension; i++)
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{
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for (var j = 0; j < dimension; j++)
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{
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if (this.isMasked(i, j))
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{
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bits.flip(j, i);
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}
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}
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}
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}
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this.isMasked=function( i, j)
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{
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return ((((i + j) & 0x01) + ((i * j) % 3)) & 0x01) == 0;
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}
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}
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DataMask.DATA_MASKS = new Array(new DataMask000(), new DataMask001(), new DataMask010(), new DataMask011(), new DataMask100(), new DataMask101(), new DataMask110(), new DataMask111());
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