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
Frame.timingsGetPresentationTime, which is only available
after the frame has been presented. In general, if you are simply
animating, you should use Frame.clockGetFrameTime 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.
The predicted time at which the frame will be presented,
in the timescale of g_get_monotonic_time(), or 0 if no predicted
presentation time is available.
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 Frame.timingsGetPresentationTime, which is only available after the frame has been presented. In general, if you are simply animating, you should use Frame.clockGetFrameTime 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.