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Implement the wlr_gamma_control_unstable_v1 protocol. The Wayland backend is prioritized over randr since it will fail in an X11 context anyway (but the randr backend would not fail in a Wayland context with xwayland support). The gamma setting is reset when the client disconnects, thus the behavior for oneshot mode blocks, like for Quartz. Co-Authored-By: Giulio Camuffo <giuliocamuffo@gmail.com> Co-Authored-By: Thomas Weißschuh <thomas@t-8ch.de> Co-Authored-By: Marek Otahal <markotahal@gmail.com> Co-Authored-By: Dominique Martinet <asmadeus@codewreck.org>
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| <?xml version="1.0" encoding="UTF-8"?> | ||
| <protocol name="wlr_gamma_control_unstable_v1"> | ||
| <copyright> | ||
| Copyright © 2015 Giulio camuffo | ||
| Copyright © 2018 Simon Ser | ||
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||
| Permission to use, copy, modify, distribute, and sell this | ||
| software and its documentation for any purpose is hereby granted | ||
| without fee, provided that the above copyright notice appear in | ||
| all copies and that both that copyright notice and this permission | ||
| notice appear in supporting documentation, and that the name of | ||
| the copyright holders not be used in advertising or publicity | ||
| pertaining to distribution of the software without specific, | ||
| written prior permission. The copyright holders make no | ||
| representations about the suitability of this software for any | ||
| purpose. It is provided "as is" without express or implied | ||
| warranty. | ||
|
|
||
| THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS | ||
| SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND | ||
| FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY | ||
| SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | ||
| WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN | ||
| AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, | ||
| ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF | ||
| THIS SOFTWARE. | ||
| </copyright> | ||
|
|
||
| <description summary="manage gamma tables of outputs"> | ||
| This protocol allows a privileged client to set the gamma tables for | ||
| outputs. | ||
|
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||
| Warning! The protocol described in this file is experimental and | ||
| backward incompatible changes may be made. Backward compatible changes | ||
| may be added together with the corresponding interface version bump. | ||
| Backward incompatible changes are done by bumping the version number in | ||
| the protocol and interface names and resetting the interface version. | ||
| Once the protocol is to be declared stable, the 'z' prefix and the | ||
| version number in the protocol and interface names are removed and the | ||
| interface version number is reset. | ||
| </description> | ||
|
|
||
| <interface name="zwlr_gamma_control_manager_v1" version="1"> | ||
| <description summary="manager to create per-output gamma controls"> | ||
| This interface is a manager that allows creating per-output gamma | ||
| controls. | ||
| </description> | ||
|
|
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| <request name="get_gamma_control"> | ||
| <description summary="get a gamma control for an output"> | ||
| Create a gamma control that can be used to adjust gamma tables for the | ||
| provided output. | ||
| </description> | ||
| <arg name="id" type="new_id" interface="zwlr_gamma_control_v1"/> | ||
| <arg name="output" type="object" interface="wl_output"/> | ||
| </request> | ||
|
|
||
| <request name="destroy" type="destructor"> | ||
| <description summary="destroy the manager"> | ||
| All objects created by the manager will still remain valid, until their | ||
| appropriate destroy request has been called. | ||
| </description> | ||
| </request> | ||
| </interface> | ||
|
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| <interface name="zwlr_gamma_control_v1" version="1"> | ||
| <description summary="adjust gamma tables for an output"> | ||
| This interface allows a client to adjust gamma tables for a particular | ||
| output. | ||
|
|
||
| The client will receive the gamma size, and will then be able to set gamma | ||
| tables. At any time the compositor can send a failed event indicating that | ||
| this object is no longer valid. | ||
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| There must always be at most one gamma control object per output, which | ||
| has exclusive access to this particular output. When the gamma control | ||
| object is destroyed, the gamma table is restored to its original value. | ||
| </description> | ||
|
|
||
| <event name="gamma_size"> | ||
| <description summary="size of gamma ramps"> | ||
| Advertise the size of each gamma ramp. | ||
|
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| This event is sent immediately when the gamma control object is created. | ||
| </description> | ||
| <arg name="size" type="uint"/> | ||
| </event> | ||
|
|
||
| <enum name="error"> | ||
| <entry name="invalid_gamma" value="1" summary="invalid gamma tables"/> | ||
| </enum> | ||
|
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| <request name="set_gamma"> | ||
| <description summary="set the gamma table"> | ||
| Set the gamma table. The file descriptor can be memory-mapped to provide | ||
| the raw gamma table, which contains successive gamma ramps for the red, | ||
| green and blue channels. Each gamma ramp is an array of 16-byte unsigned | ||
| integers which has the same length as the gamma size. | ||
|
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||
| The file descriptor data must have the same length as three times the | ||
| gamma size. | ||
| </description> | ||
| <arg name="fd" type="fd" summary="gamma table file descriptor"/> | ||
| </request> | ||
|
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||
| <event name="failed"> | ||
| <description summary="object no longer valid"> | ||
| This event indicates that the gamma control is no longer valid. This | ||
| can happen for a number of reasons, including: | ||
| - The output doesn't support gamma tables | ||
| - Setting the gamma tables failed | ||
| - Another client already has exclusive gamma control for this output | ||
| - The compositor has transfered gamma control to another client | ||
|
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| Upon receiving this event, the client should destroy this object. | ||
| </description> | ||
| </event> | ||
|
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| <request name="destroy" type="destructor"> | ||
| <description summary="destroy this control"> | ||
| Destroys the gamma control object. If the object is still valid, this | ||
| restores the original gamma tables. | ||
| </description> | ||
| </request> | ||
| </interface> | ||
| </protocol> |
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