WIP: png: Read the gamma value if given
from the gAMA PNG chunk but not if sRGB mode is already set.
This just sets it in a GdkPixbufOption, for programs to read out and apply. It needs documentation and testing. See #6.
from the gAMA PNG chunk but not if sRGB mode is already set.
This just sets it in a GdkPixbufOption, for programs to read out and apply. It needs documentation and testing. See #6.