class ChunkyPNG::Chunk::ImageData

def self.split_in_chunks(data, level = Zlib::DEFAULT_COMPRESSION, chunk_size = 2147483647)
  streamdata = Zlib::Deflate.deflate(data, level)
  # TODO: Split long streamdata over multiple chunks
  [ChunkyPNG::Chunk::ImageData.new("IDAT", streamdata)]
end