Constructs an XingHeader by attempting to parse a Xing/Info or VBRI
header from the first frame's data.
The raw bytes of the first MPEG audio frame (header + side information + payload).
Gets whether this is a valid, usable VBR header (type is not Invalid
and both totalFrames and totalSize are non-zero).
Gets the total number of MPEG frames in the stream.
Gets the total byte size of the audio data.
Gets the type of VBR header detected (Xing, VBRI, or Invalid).
Parser for Xing and VBRI VBR headers found inside the first MPEG frame.