bits_per_sample in pixbuf functions

["Lewin A.R.W. Edwards" <larwe larwe com>]

Is the "bits_per_sample" parameter in functions such as gdk_pixbuf_new 
bits per RGB component

I.e., if I had an internal RGB buffer (8:8:8, i.e. 24bpp) would I use 24 
or 8 as the bits_per_sample field?

And a more complex case: if I had a 16bpp buffer, would gdk 
automatically assume that it's 5:6:5?

--
-- Lewin A.R.W. Edwards (Embedded Engineer)
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