Returns whether timings are complete.
The timing information in a GdkFrameTimings is filled in
incrementally as the frame as drawn and passed off to the
window system for processing and display to the user. The
accessor functions for GdkFrameTimings can return 0 to
indicate an unavailable value for two reasons: either because
the information is not yet available, or because it isn't
available at all.
Once this function returns %TRUE for a frame, you can be
certain that no further values will become available and be
stored in the GdkFrameTimings.
Gets the frame counter value of the GdkFrameClock when
this frame was drawn.
Returns the frame time for the frame.
This is the time value that is typically used to time
animations for the frame. See [methodGdk.FrameClock.get_frame_time].
Gets the predicted time at which this frame will be displayed.
Although no predicted time may be available, if one is available,
it will be available while the frame is being generated, in contrast
to [methodGdk.FrameTimings.get_presentation_time], which is only
available after the frame has been presented.
In general, if you are simply animating, you should use
[methodGdk.FrameClock.get_frame_time] rather than this function,
but this function is useful for applications that want exact control
over latency. For example, a movie player may want this information
for Audio/Video synchronization.
Reurns the presentation time.
This is the time at which the frame became visible to the user.
Gets the natural interval between presentation times for the display that this frame was displayed on.
Frame presentation usually happens during the “vertical blanking interval”.
Increases the reference count of timings.
Decreases the reference count of timings.
If timings is no longer referenced, it will be freed.
A
GdkFrameTimingsobject holds timing information for a single frame of the application’s displays.To retrieve
GdkFrameTimingsobjects, use [methodGdk.FrameClock.get_timings] or [methodGdk.FrameClock.get_current_timings]. The information inGdkFrameTimingsis useful for precise synchronization of video with the event or audio streams, and for measuring quality metrics for the application’s display, such as latency and jitter.