24 lines
317 B
Go
24 lines
317 B
Go
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package mkvio
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func pack(n int, b []byte) uint64 {
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var v uint64
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var k uint64 = (uint64(n) - 1) * 8
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for i := 0; i < n; i++ {
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v |= uint64(b[i]) << k
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k -= 8
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}
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return v
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}
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func unpack(n int, v uint64) []byte {
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var b []byte
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for i := uint(n); i > 0; i-- {
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b = append(b, byte(v>>(8*i))&0xff)
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}
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return b
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}
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