diff options
Diffstat (limited to 'vendor/github.com/klauspost/compress/huff0/bitwriter.go')
| -rw-r--r-- | vendor/github.com/klauspost/compress/huff0/bitwriter.go | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/vendor/github.com/klauspost/compress/huff0/bitwriter.go b/vendor/github.com/klauspost/compress/huff0/bitwriter.go index ec0c3fc53..bda4021ef 100644 --- a/vendor/github.com/klauspost/compress/huff0/bitwriter.go +++ b/vendor/github.com/klauspost/compress/huff0/bitwriter.go @@ -38,7 +38,7 @@ func (b *bitWriter) addBits16Clean(value uint16, bits uint8) { b.nBits += bits } -// addBits16Clean will add up to 16 bits. value may not contain more set bits than indicated. +// encSymbol will add up to 16 bits. value may not contain more set bits than indicated. // It will not check if there is space for them, so the caller must ensure that it has flushed recently. func (b *bitWriter) encSymbol(ct cTable, symbol byte) { enc := ct[symbol] @@ -46,6 +46,17 @@ func (b *bitWriter) encSymbol(ct cTable, symbol byte) { b.nBits += enc.nBits } +// encTwoSymbols will add up to 32 bits. value may not contain more set bits than indicated. +// It will not check if there is space for them, so the caller must ensure that it has flushed recently. +func (b *bitWriter) encTwoSymbols(ct cTable, av, bv byte) { + encA := ct[av] + encB := ct[bv] + sh := b.nBits & 63 + combined := uint64(encA.val) | (uint64(encB.val) << (encA.nBits & 63)) + b.bitContainer |= combined << sh + b.nBits += encA.nBits + encB.nBits +} + // addBits16ZeroNC will add up to 16 bits. // It will not check if there is space for them, // so the caller must ensure that it has flushed recently. |