Commit Graph

7 Commits

Author SHA1 Message Date
Jonas Ådahl
9aa9cacb3d color-device: Pass calibration state separately when creating profile
This allows using two separate ICC profiles for one "color profile",
which is necessary to properly support color transform
calibration profiles from an EFI variable.

These types of profiles are intended to be applied using the color
transformation matrix (CTM) property on the output, which makes the
presented output match sRGB. In order to avoid color profile aware
clients making the wrong assumption, we must set the profile exposed
externally to be what is the expected perceived result, i.e. sRGB, while
still applying CTM from the real ICC profile.

The separation is done by introducing a MetaColorCalibration struct,
that is filled with relevant data. For profiles coming from EFI, a
created profile is practically an sRGB one, but the calibration data
comes from EFI, while for other profiles, the calibration data and the
ICC profile itself come from the same source.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2568>
2022-09-01 21:09:28 +00:00
Jonas Ådahl
3e1a3faa28 color-profile: Add gamma LUT generators
More or less copied from gnome-settings-daemon. The look up tables are
either calculated based on the VCGT (Video Card Gamma Table) and the
blackbody color for a given temperature, or the blackbody color for a
given temperature alone, if no VCGT is available.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2165>
2022-09-01 17:52:01 +02:00
Jonas Ådahl
22064055be color-profile: Add API to get file path
Each color profile has a corresponding ICC profile saved on the file
system. The getter returns a file path for that ICC profile file.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2165>
2022-09-01 17:52:01 +02:00
Jonas Ådahl
985292c109 color-profile: Add getter for brightness profile
Will be used to set brightness from a color profile.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2165>
2022-09-01 17:52:01 +02:00
Jonas Ådahl
0a0fb2fda9 color: Create color profile for assigned profile
We created device profiles, that we manage the lifetime of in colord,
but color devices can be assigned profiles other than the ones it was
created for. For example, this can include the standard sRGB profile
provided by colord.

To achieve this, keep track of the default profile of the CdDevice as
the "assigned" color profile of the device. Given this profile
(CdProfile), construct a MetaColorProfile that can then be interacted
with as if it was generated by ourself.

The assigned profile (default profile in colord terms) does nothing
special so far, but will later be used to determine how to apply CRTC
gamma ramps etc.

The sRGB.icc file used in the tests was copied from colord. It was
stated in the repository that it has no known copyright restrictions.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2164>
2022-09-01 16:54:04 +02:00
Jonas Ådahl
cc84a45b56 color-profile: Create colord profiles
This works similiarly to how MetaColorDevice works, by creating them
asynchronously then signalling the 'ready' signal when done. Also
similarly to MetaColorDevice, the on-demand sync cleanup on finalize is
added, to avoid race conditions when hotplugs happens very rapidly,
e.g. in tests.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2164>
2022-09-01 16:54:04 +02:00
Jonas Ådahl
062abe01b3 color: Generate and store ICC profiles from EDID or EFI
Just as gsd-color does, generate color profiles. This can either be done
from EFI, if available and the color device is associated with a built
in panel, or from the EDID. If no source for a profile is found, none is
created.

The ICC profiles are also stored on disk so that they can be read by
e.g. colord. The on disk stored profiles will only be used for storing,
not reading the profiles, as the autogenerated ones will no matter what
always be loaded to verify the on disk profiles are up to date. If a on
disk profile is not, it will be replaced. This is so that fixes or
improvements to the profile generation will be made available despite
having run an older version earlier.

After generating, add some metadata about the generated file itself
needed by colord, i.e. file MD5 checksum and the file path.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2164>
2022-09-01 16:54:04 +02:00