Represents the "BitsPerComponent" entry of the type 7 shading dictionary object.

It is a required entry defined as part of the PDF 1.0 specification.

It contains an integer representing a PDF numeric object.

For definitive details see:.

The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; page 198.

BitsPerComponent sets the bit depth of the color component values at the four corners of each tensor patch. Valid values are 1, 2, 4, 8, 12, and 16.