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146 lines
7.0 KiB
146 lines
7.0 KiB
<?xml version="1.0" encoding="UTF-8"?>
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<protocol name="input_timestamps_unstable_v1">
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<copyright>
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Copyright © 2017 Collabora, Ltd.
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice (including the next
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paragraph) shall be included in all copies or substantial portions of the
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Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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</copyright>
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<description summary="High-resolution timestamps for input events">
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This protocol specifies a way for a client to request and receive
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high-resolution timestamps for input events.
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Warning! The protocol described in this file is experimental and
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backward incompatible changes may be made. Backward compatible changes
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may be added together with the corresponding interface version bump.
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Backward incompatible changes are done by bumping the version number in
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the protocol and interface names and resetting the interface version.
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Once the protocol is to be declared stable, the 'z' prefix and the
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version number in the protocol and interface names are removed and the
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interface version number is reset.
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</description>
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<interface name="zwp_input_timestamps_manager_v1" version="1">
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<description summary="context object for high-resolution input timestamps">
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A global interface used for requesting high-resolution timestamps
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for input events.
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</description>
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<request name="destroy" type="destructor">
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<description summary="destroy the input timestamps manager object">
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Informs the server that the client will no longer be using this
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protocol object. Existing objects created by this object are not
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affected.
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</description>
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</request>
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<request name="get_keyboard_timestamps">
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<description summary="subscribe to high-resolution keyboard timestamp events">
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Creates a new input timestamps object that represents a subscription
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to high-resolution timestamp events for all wl_keyboard events that
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carry a timestamp.
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If the associated wl_keyboard object is invalidated, either through
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client action (e.g. release) or server-side changes, the input
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timestamps object becomes inert and the client should destroy it
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by calling zwp_input_timestamps_v1.destroy.
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</description>
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<arg name="id" type="new_id" interface="zwp_input_timestamps_v1"/>
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<arg name="keyboard" type="object" interface="wl_keyboard"
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summary="the wl_keyboard object for which to get timestamp events"/>
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</request>
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<request name="get_pointer_timestamps">
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<description summary="subscribe to high-resolution pointer timestamp events">
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Creates a new input timestamps object that represents a subscription
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to high-resolution timestamp events for all wl_pointer events that
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carry a timestamp.
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If the associated wl_pointer object is invalidated, either through
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client action (e.g. release) or server-side changes, the input
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timestamps object becomes inert and the client should destroy it
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by calling zwp_input_timestamps_v1.destroy.
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</description>
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<arg name="id" type="new_id" interface="zwp_input_timestamps_v1"/>
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<arg name="pointer" type="object" interface="wl_pointer"
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summary="the wl_pointer object for which to get timestamp events"/>
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</request>
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<request name="get_touch_timestamps">
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<description summary="subscribe to high-resolution touch timestamp events">
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Creates a new input timestamps object that represents a subscription
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to high-resolution timestamp events for all wl_touch events that
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carry a timestamp.
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If the associated wl_touch object becomes invalid, either through
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client action (e.g. release) or server-side changes, the input
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timestamps object becomes inert and the client should destroy it
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by calling zwp_input_timestamps_v1.destroy.
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</description>
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<arg name="id" type="new_id" interface="zwp_input_timestamps_v1"/>
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<arg name="touch" type="object" interface="wl_touch"
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summary="the wl_touch object for which to get timestamp events"/>
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</request>
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</interface>
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<interface name="zwp_input_timestamps_v1" version="1">
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<description summary="context object for input timestamps">
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Provides high-resolution timestamp events for a set of subscribed input
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events. The set of subscribed input events is determined by the
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zwp_input_timestamps_manager_v1 request used to create this object.
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</description>
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<request name="destroy" type="destructor">
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<description summary="destroy the input timestamps object">
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Informs the server that the client will no longer be using this
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protocol object. After the server processes the request, no more
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timestamp events will be emitted.
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</description>
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</request>
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<event name="timestamp">
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<description summary="high-resolution timestamp event">
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The timestamp event is associated with the first subsequent input event
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carrying a timestamp which belongs to the set of input events this
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object is subscribed to.
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The timestamp provided by this event is a high-resolution version of
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the timestamp argument of the associated input event. The provided
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timestamp is in the same clock domain and is at least as accurate as
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the associated input event timestamp.
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The timestamp is expressed as tv_sec_hi, tv_sec_lo, tv_nsec triples,
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each component being an unsigned 32-bit value. Whole seconds are in
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tv_sec which is a 64-bit value combined from tv_sec_hi and tv_sec_lo,
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and the additional fractional part in tv_nsec as nanoseconds. Hence,
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for valid timestamps tv_nsec must be in [0, 999999999].
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</description>
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<arg name="tv_sec_hi" type="uint"
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summary="high 32 bits of the seconds part of the timestamp"/>
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<arg name="tv_sec_lo" type="uint"
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summary="low 32 bits of the seconds part of the timestamp"/>
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<arg name="tv_nsec" type="uint"
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summary="nanoseconds part of the timestamp"/>
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</event>
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</interface>
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</protocol>
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