Package iobit provides primitives for reading & writing bits The main purpose of this library is to remove the need to write custom bit-masks when reading or writing bitstreams, and to ease maintenance.
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go get github.com/bamiaux/iobitFull documentation at http://godoc.org/github.com/bamiaux/iobit
Package iobit provides primitives for reading & writing bits
The main purpose of this library is to remove the need to write custom bit-masks when reading or writing bitstreams, and to ease maintenance. This is true especially when you need to read/write data which is not aligned on bytes.
Errors are sticky so you can check for errors after a chunk of meaningful work rather than after every operation.
For example, with iobit you can read an MPEG-TS PCR like this:
r := iobit.NewReader(buffer)
base := r.Uint64(33) // PCR base is 33-bits
r.Skip(6) // 6-bits are reserved
extension := r.Uint64(9) // PCR extension is 9-bits
instead of:
base = uint64(buffer[0]) << 25
base |= uint64(buffer[1]) << 17
base |= uint64(buffer[2]) << 9
base |= uint64(buffer[3]) << 1
base |= buffer[4] >> 7
extension := uint16(buffer[4] & 0x1) << 8
extension |= buffer[5]
and write it like this:
w := iobit.NewWriter(buffer)
w.PutUint64(33, base)
w.PutUint32(6, 0)
w.PutUint32(9, extension)