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Author SHA1 Message Date
Jonas Ådahl
083b788c74 color-manager: Maintain a lcms context
Will be used from other color related units later on. This also adds an
explicit dependency on LCMS2.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2164>
2022-09-01 16:54:04 +02:00
Jonas Ådahl
f4be29eec7 tests: Add rudimentary color device test
Tests that test case EDID is setup correctly, and that color devices for
monitors are created.

tests/color: Add hotplugging tests

Checks that changing the number of connected monitors reflects the
number of current color devices, and that we end up with the correct end
state.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2164>
2022-09-01 16:54:04 +02:00
Jonas Ådahl
8826b29329 color-manager: Add ready state
Ready means it has established the connection to colord and can operate.
Will be used by tests to make sure tests don't fail due to race
conditions when connecting to colord.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2164>
2022-09-01 16:54:04 +02:00
Jonas Ådahl
6403cfe170 color-manager: Add API to get the color device for a monitor
There is a 1-on-1 mapping between these two entities, so add a getter.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2164>
2022-09-01 16:54:04 +02:00
Jonas Ådahl
43cd70089e color-manager: Set up a D-Bus proxy to org.gnome.SettingsDaemon.Color
gsd-color provides this API, which exposes details about the night light
state. Currently, gsd-color also turns this state into CRTC gamma
changes, but this will eventually change, and this is a preparation for
this.

The proxy isn't yet used for anything.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2164>
2022-09-01 16:54:04 +02:00
Jonas Ådahl
3fe01ffc4a color-manager: Take over color device management from gsd-color
Previously, gsd-color handled adding color devices. It got information
about those via the GnomeRR API, which is part of libgnome-desktop.
libgnome-desktop itself got this information from the
org.gnome.Mutter.DisplayConfig.GetResources() D-Bus method, implemented
by mutter.

Now, mutter itself will add all the monitor color devices itself,
without having to go via gsd-color.

We sometimes need to delete colord devices synchronously, in certain
race conditions when we add and remove devices very quickly (e.g. in
tests). However, we cannot use libcolord's 'sync' API variants, as it
has a nested takes-all main loop as a way to invoke the sync call. This
effectively means we end up sometimes not return from this function in a
timely manner, causing wierd issues.

Instead, create our own sync helper, that uses a separate context that
we temporarly push as the thread-default one.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2141>
2022-09-01 14:31:40 +00:00
Jonas Ådahl
20a91aa4e9 backend: Add color manager skeleton
Create a color manager type that eventually will be the high level
manager of color related behavior, such as ICC profiles and
color "temperature" a.k.a. night light.

For now, it's only an empty shell. It's also constructed by the actual
backend, as at a later point, the X11 and native color management
implementations will differ.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2141>
2022-09-01 14:31:40 +00:00