74 lines
1.9 KiB
Go
74 lines
1.9 KiB
Go
package datamatrix
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type dmCodeSize struct {
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Rows int
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Columns int
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RegionCountHorizontal int
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RegionCountVertical int
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ECCCount int
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BlockCount int
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}
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func (s *dmCodeSize) RegionRows() int {
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return (s.Rows - (s.RegionCountHorizontal * 2)) / s.RegionCountHorizontal
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}
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func (s *dmCodeSize) RegionColumns() int {
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return (s.Columns - (s.RegionCountVertical * 2)) / s.RegionCountVertical
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}
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func (s *dmCodeSize) MatrixRows() int {
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return s.RegionRows() * s.RegionCountHorizontal
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}
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func (s *dmCodeSize) MatrixColumns() int {
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return s.RegionColumns() * s.RegionCountVertical
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}
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func (s *dmCodeSize) DataCodewords() int {
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return ((s.MatrixColumns() * s.MatrixRows()) / 8) - s.ECCCount
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}
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func (s *dmCodeSize) DataCodewordsForBlock(idx int) int {
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if s.Rows == 144 && s.Columns == 144 {
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// Special Case...
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if idx < 8 {
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return 156
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} else {
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return 155
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}
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}
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return s.DataCodewords() / s.BlockCount
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}
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func (s *dmCodeSize) ErrorCorrectionCodewordsPerBlock() int {
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return s.ECCCount / s.BlockCount
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}
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var codeSizes []*dmCodeSize = []*dmCodeSize{
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&dmCodeSize{10, 10, 1, 1, 5, 1},
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&dmCodeSize{12, 12, 1, 1, 7, 1},
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&dmCodeSize{14, 14, 1, 1, 10, 1},
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&dmCodeSize{16, 16, 1, 1, 12, 1},
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&dmCodeSize{18, 18, 1, 1, 14, 1},
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&dmCodeSize{20, 20, 1, 1, 18, 1},
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&dmCodeSize{22, 22, 1, 1, 20, 1},
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&dmCodeSize{24, 24, 1, 1, 24, 1},
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&dmCodeSize{26, 26, 1, 1, 28, 1},
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&dmCodeSize{32, 32, 2, 2, 36, 1},
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&dmCodeSize{36, 36, 2, 2, 42, 1},
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&dmCodeSize{40, 40, 2, 2, 48, 1},
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&dmCodeSize{44, 44, 2, 2, 56, 1},
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&dmCodeSize{48, 48, 2, 2, 68, 1},
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&dmCodeSize{52, 52, 2, 2, 84, 2},
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&dmCodeSize{64, 64, 4, 4, 112, 2},
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&dmCodeSize{72, 72, 4, 4, 144, 4},
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&dmCodeSize{80, 80, 4, 4, 192, 4},
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&dmCodeSize{88, 88, 4, 4, 224, 4},
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&dmCodeSize{96, 96, 4, 4, 272, 4},
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&dmCodeSize{104, 104, 4, 4, 336, 6},
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&dmCodeSize{120, 120, 6, 6, 408, 6},
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&dmCodeSize{132, 132, 6, 6, 496, 8},
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&dmCodeSize{144, 144, 6, 6, 620, 10},
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}
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