FrameTimings

A #GdkFrameTimings object holds timing information for a single frame of the application’s displays. To retrieve #GdkFrameTimings objects, use gdk.frame_clock.FrameClock.getTimings or gdk.frame_clock.FrameClock.getCurrentTimings. The information in #GdkFrameTimings is 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.

class FrameTimings : Boxed {

this(void* ptr, Flag!"Take" take);

void* _cPtr(Flag!"Dup" dup);

static GType _getGType();

GType _gType [@property getter];

FrameTimings self();

bool getComplete();

long getFrameCounter();

long getFrameTime();

long getPredictedPresentationTime();

long getPresentationTime();

long getRefreshInterval();

}

Constructors

this this(void* ptr, Flag!"Take" take)

Members

Functions

_cPtr void* _cPtr(Flag!"Dup" dup)
getComplete bool getComplete(): 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 gdk.frame_timings.FrameTimings.getComplete returns true for a frame, you can be certain that no further values will become available and be stored in the #GdkFrameTimings.
getFrameCounter long getFrameCounter(): Gets the frame counter value of the #GdkFrameClock when this this frame was drawn.
getFrameTime long getFrameTime(): Returns the frame time for the frame. This is the time value that is typically used to time animations for the frame. See gdk.frame_clock.FrameClock.getFrameTime.
getPredictedPresentationTime long getPredictedPresentationTime(): 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 gdk.frame_timings.FrameTimings.getPresentationTime, which is only available after the frame has been presented. In general, if you are simply animating, you should use gdk.frame_clock.FrameClock.getFrameTime 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.
getPresentationTime long getPresentationTime(): Reurns the presentation time. This is the time at which the frame became visible to the user.
getRefreshInterval long getRefreshInterval(): 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”.
self FrameTimings self(): Returns this, for use in with statements.

Properties

_gType GType _gType [@property getter]

Static functions

_getGType GType _getGType()

Inherited Members

From Boxed

_cInstancePtr void* _cInstancePtr;: Pointer to the C boxed value
_getGType GType _getGType(): Get the GType of this boxed type.
_gType GType _gType [@property getter]: Boxed GType property.
self Boxed self(): Convenience method to return this cast to a type. For use in D with statements.
boxCopy void* boxCopy(): Make a copy of the wrapped C boxed data.
boxedCopy void* boxedCopy(void* cBoxed): Copy a C boxed value using g_boxed_copy.
boxedFree void boxedFree(void* cBoxed): Free a C boxed value using g_boxed_free.

gdk frame_timings classes

FrameTimings