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color-management: add wp_image_description_reference_v1

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Note that wp_image_description_v1 is not a frozen interface. Therefore
it must always be a descendant of wp_color_manager_v1.

In order to allow other protocols, such as ext-image-capture-source-v1,
to define the equivalent of
wp_color_management_output_v1.get_image_description, we must therefore
create an indirection between the new protocol and
wp_image_description_v1 that is resolved through wp_color_manager_v1
itself.

This is a prerequisite for adding color management support to the
ext-image-copy-capture-v1 protocol.

Signed-off-by: Julian Orth <ju.orth@gmail.com>
This commit is contained in:
Julian Orth 2025-09-19 17:42:38 +02:00 • committed by Pekka Paalanen
parent 70442afc16
commit a5caef14e7
1 changed files with 32 additions and 0 deletions
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32
staging/color-management/color-management-v1.xml
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@ -581,6 +581,20 @@
transfer functions and named primaries have been sent.
</description>
</event>
<request name="get_image_description" since="2">
<description summary="create an image description from a reference">
This request retrieves the image description backing a reference.
The get_information request can be used if and only if the request that
creates the reference allows it.
</description>
<arg name="image_description"
type="new_id" interface="wp_image_description_v1"/>
<arg name="reference"
type="object" interface="wp_image_description_reference_v1"/>
</request>
</interface>
<interface name="wp_color_management_output_v1" version="2">
@ -1689,4 +1703,22 @@
summary="Maximum frame-average light level (cd/m²)"/>
</event>
</interface>
<interface name="wp_image_description_reference_v1" version="1">
<description summary="Reference to an image description">
This object is a reference to an image description. This interface is
frozen at version 1 to allow other protocols to create
wp_image_description_v1 objects.
The wp_color_manager_v1.get_image_description request can be used to
retrieve the underlying image description.
</description>
<request name="destroy" type="destructor">
<description summary="destroy the reference">
Destroy this object. This has no effect on the referenced image
description.
</description>
</request>
</interface>
</protocol>