question: private XingFrame ( ByteBuffer header ) { this . header = header ; header . rewind ( ) ; setVbr ( ) ; byte flagBuffer [ ] = new byte [ XING_FLAG_BUFFER_SIZE ] ; header . get ( flagBuffer ) ; if ( ( flagBuffer [ BYTE_4 ] & ( byte ) ( 1 ) ) != 0 ) { setFrameCount ( ) ; } if ( ( flagBuffer [ BYTE_4 ] & ( byte ) ( 1 << 1 ) ) != 0 ) { setAudioSize ( ) ; } if ( header . limit ( ) >= XING_HEADER_BUFFER_SIZE + LameFrame . LAME_HEADER_BUFFER_SIZE ) { header . position ( XING_HEADER_BUFFER_SIZE ) ; lameFrame = LameFrame . parseLameFrame ( header ) ; } }
target:  Read the Xing Properties from the buffer