mp_image: don't guess colorspace params in mp_image_copy_attributes()

This is "wrong", because you might want mp_image_copy_attributes() to
preserve the information that the colorspace parameters are unknown.
This is important for hwdec -copy modes, which call this function before
fix_image_params() and mp_colorspace_merge() are called.

Instead, just wipe the colorspace attributes if the pixel format changes
in an apparently incompatible way. Use mp_image_params_guess_csp() logic
for this and factor that into its own function.

mp_image_set_attributes() attempts to do something similar, so change
that in the same way. Also, mp_image_params_guess_csp() just returned if
the imgfmt was invalid or unset - just remove that part, because it
annoyingly doesn't fit into the new code, and had little reason to exist
to begin with. (Probably.)

0 files changed, 0 insertions, 0 deletions