# This file has been autogenerated by the pywayland scanner # Copyright © 2013-2014 Collabora, Ltd. # # Permission is hereby granted, free of charge, to any person obtaining a # copy of this software and associated documentation files (the "Software"), # to deal in the Software without restriction, including without limitation # the rights to use, copy, modify, merge, publish, distribute, sublicense, # and/or sell copies of the Software, and to permit persons to whom the # Software is furnished to do so, subject to the following conditions: # # The above copyright notice and this permission notice (including the next # paragraph) shall be included in all copies or substantial portions of the # Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL # THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER # DEALINGS IN THE SOFTWARE. from __future__ import annotations import enum from pywayland.protocol_core import ( Argument, ArgumentType, Global, Interface, Proxy, Resource, ) from ..wayland import WlSurface from .wp_presentation_feedback import WpPresentationFeedback class WpPresentation(Interface): """Timed presentation related :class:`~pywayland.protocol.wayland.WlSurface` requests The main feature of this interface is accurate presentation timing feedback to ensure smooth video playback while maintaining audio/video synchronization. Some features use the concept of a presentation clock, which is defined in the presentation.clock_id event. A content update for a :class:`~pywayland.protocol.wayland.WlSurface` is submitted by a :func:`WlSurface.commit() ` request. Request 'feedback' associates with the :func:`WlSurface.commit() ` and provides feedback on the content update, particularly the final realized presentation time. When the final realized presentation time is available, e.g. after a framebuffer flip completes, the requested presentation_feedback.presented events are sent. The final presentation time can differ from the compositor's predicted display update time and the update's target time, especially when the compositor misses its target vertical blanking period. """ name = "wp_presentation" version = 1 class error(enum.IntEnum): invalid_timestamp = 0 invalid_flag = 1 class WpPresentationProxy(Proxy[WpPresentation]): interface = WpPresentation @WpPresentation.request() def destroy(self) -> None: """Unbind from the presentation interface Informs the server that the client will no longer be using this protocol object. Existing objects created by this object are not affected. """ self._marshal(0) self._destroy() @WpPresentation.request( Argument(ArgumentType.Object, interface=WlSurface), Argument(ArgumentType.NewId, interface=WpPresentationFeedback), ) def feedback(self, surface: WlSurface) -> Proxy[WpPresentationFeedback]: """Request presentation feedback information Request presentation feedback for the current content submission on the given surface. This creates a new presentation_feedback object, which will deliver the feedback information once. If multiple presentation_feedback objects are created for the same submission, they will all deliver the same information. For details on what information is returned, see the presentation_feedback interface. :param surface: target surface :type surface: :class:`~pywayland.protocol.wayland.WlSurface` :returns: :class:`~pywayland.protocol.presentation_time.WpPresentationFeedback` -- new feedback object """ callback = self._marshal_constructor(1, WpPresentationFeedback, surface) return callback class WpPresentationResource(Resource): interface = WpPresentation @WpPresentation.event( Argument(ArgumentType.Uint), ) def clock_id(self, clk_id: int) -> None: """Clock id for timestamps This event tells the client in which clock domain the compositor interprets the timestamps used by the presentation extension. This clock is called the presentation clock. The compositor sends this event when the client binds to the presentation interface. The presentation clock does not change during the lifetime of the client connection. The clock identifier is platform dependent. On Linux/glibc, the identifier value is one of the clockid_t values accepted by clock_gettime(). clock_gettime() is defined by POSIX.1-2001. Timestamps in this clock domain are expressed as tv_sec_hi, tv_sec_lo, tv_nsec triples, each component being an unsigned 32-bit value. Whole seconds are in tv_sec which is a 64-bit value combined from tv_sec_hi and tv_sec_lo, and the additional fractional part in tv_nsec as nanoseconds. Hence, for valid timestamps tv_nsec must be in [0, 999999999]. Note that clock_id applies only to the presentation clock, and implies nothing about e.g. the timestamps used in the Wayland core protocol input events. Compositors should prefer a clock which does not jump and is not slewed e.g. by NTP. The absolute value of the clock is irrelevant. Precision of one millisecond or better is recommended. Clients must be able to query the current clock value directly, not by asking the compositor. :param clk_id: platform clock identifier :type clk_id: `ArgumentType.Uint` """ self._post_event(0, clk_id) class WpPresentationGlobal(Global): interface = WpPresentation WpPresentation._gen_c() WpPresentation.proxy_class = WpPresentationProxy WpPresentation.resource_class = WpPresentationResource WpPresentation.global_class = WpPresentationGlobal