pub fn new(rdr: R) -> FrameDecoder<R> {
        FrameDecoder {
            r: rdr,
            dec: Decoder::new(),
            checksummer: CheckSummer::new(),
            src: vec![0; MAX_COMPRESS_BLOCK_SIZE],
            dst: vec![0; MAX_BLOCK_SIZE],
            dsts: 0,
            dste: 0,
            read_stream_ident: false,
        }
    }
Create a new reader for streaming Snappy decompression.
src/read.rs