Pekka Paalanen 53493aaddc libweston: add colorimetry_mode API ... This API is mostly for use by the DRM-backend. Colorimetry mode is is the KMS connector property "Colorspace" which defines the video signal encoding colorimetry. A video sink indicates the supported modes in EDID or DisplayID. This patch adds the libweston API that allows backends to indicate the supported modes for the frontends, and frontends to set the mode to be used by backends. Colorimetry mode does not directly affect color management inside Weston, it is only metadata for the video sink. It is the frontend's responsibility to set up an output color profile that agrees with the colorimetry mode. (That API has not been implemented yet.) eotf_mode will be the same. There is only one reason to make this a libweston core API instead of a backend-drm API: when wayland-backend gains color-management protocol support, meaning it can forward WCG and HDR content correctly to a host compositor, the supported colorimetry modes can be determined from the host compositor's supported color-management features, allowing the guest Weston to pick some other output image description than the host compositor's preferred image description. This likely allows only a few other choices from standard colorspaces, so it's possible this isn't sufficient for that use case. Either way, it is easy to just copy the eotf_mode API design, and since colorimetry_mode and eotf_mode go together, let both have the same API design. It is possible to convert this to backend-drm API later. Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>		2024-05-06 10:39:42 +00:00
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libweston	libweston: add colorimetry_mode API	2024-05-06 10:39:42 +00:00
meson.build	libweston/desktop: Migrate libweston-desktop/libweston-desktop.h	2022-09-23 13:57:26 +03:00