Reads chunk which is expected to be a Start chunk or a Null chunk.
After chunk has been read, this.type is either set to Start, if the
provided chunk was a start chunk, or to Stop for a Null chunk.
this.uncompressed_size reflects the total uncompressed size of the data
in the chunks that will follow.
Reads chunk which is expected to be a Start chunk or a Null chunk.
After chunk has been read, this.type is either set to Start, if the provided chunk was a start chunk, or to Stop for a Null chunk. this.uncompressed_size reflects the total uncompressed size of the data in the chunks that will follow.