Added in commit 415f869f20 to drop a
workaround from commit bac042db39.
This line was not a part of the workaround and looks completely
unrelated. I assume that's just a commit mistake. :-)
which takes a GimpColorProfile and a Babl format, and returns a new
format which uses the profile's RGB primaries and TRC, and the
original format's pixel layout; or NULL if babl couldn't create a
space from the profile's ICC data.
Trick lcms into converting cairo-RGB24 pixels directly, by using
TYPE_BGRA_8 on little endian and TYPE_ARGB_8 on big endian. They have
the same byte order, and the alpha channel (ignored by lcms anyway)
takes the place of the unused byte of cairo-RGB24.
This saves two babl conversions around cmsDoTransform().
Return "R'G'B'[A] u8" and "TYPE_RGB[A]_8" and babl and lcms formats.
I'm not sure which code triggered the warning about an unhandled
format, but now it handles indexed images too.
Rename profile constructors to say "d65_gray" instead of just "gray",
"srgb_trc" instead of "srgb_gamma", and drop the "srgb" from
"srgb_linear" because we now say "d65". This should be a naming scheme
that doesn't conflict with whatever future functions we might add.
Support creating linear/sRGB-gamma variants of gray profiles and
rename gimp_color_profile_new_linear_rgb_from_color_profile() to
gimp_color_profile_new_linear_gamma_from_color_profile() because it's
not RGB-specific any longer.
Add gimp_color_profile_new_srgb_gray() and
gimp_color_profile_new_linear_gray().
I know "srgb_gray" sounds odd but it's better than
"gray_with_srgb_trc"...
Please review, I have no clue if that code is right.
Add two private functions which are currently unused but will
become public once it's clear where exactly we need them:
gimp_color_profile_get_rgb_matrix_colorants(): returns a GimpMatrix2
with the RGB colorants.
gimp_color_profile_new_foobar(): takes an existing profile and creates
a new one with the same RGB colorants but a linear gamma TRC. To be
renamed and made more general.
Fix gimp_color_profile_get_format() to return the right format for
"cairo-RGB24": simply check for the more special cairo formats first,
then check for the general RGB models. Found by Massimo.
it used to be a typedef to gpointer and actually was a cmsHPROFILE.
Change its API to be more "standard", remove the public close()
function. The object caches both the cmsHPROFILE and the data/length
ICC blob, so conversions between the two become obsolete (simply call
get_lcms_profile() or get_icc_profile()).
Adapt everything to the new API, but port it in a naive way for now,
the code doesn't take advantage of the new possibilities yet (like
refcounting).
Ell