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30 lines
639 B
30 lines
639 B
package qr
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import (
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"github.com/boombuler/barcode/utils"
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)
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type errorCorrection struct {
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rs *utils.ReedSolomonEncoder
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}
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var ec = newErrorCorrection()
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func newErrorCorrection() *errorCorrection {
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fld := utils.NewGaloisField(285, 256, 0)
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return &errorCorrection{utils.NewReedSolomonEncoder(fld)}
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}
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func (ec *errorCorrection) calcECC(data []byte, eccCount byte) []byte {
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dataInts := make([]int, len(data))
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for i := 0; i < len(data); i++ {
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dataInts[i] = int(data[i])
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}
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res := ec.rs.Encode(dataInts, int(eccCount))
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result := make([]byte, len(res))
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for i := 0; i < len(res); i++ {
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result[i] = byte(res[i])
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}
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return result
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}
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