GI.Gst.Objects.SystemClock

The GStreamer core provides a GstSystemClock based on the system time. Asynchronous callbacks are scheduled from an internal thread.

Clock implementors are encouraged to subclass this systemclock as it implements the async notification.

Subclasses can however override all of the important methods for sync and async notifications to implement their own callback methods or blocking wait operations.

Exported types

newtype SystemClock

Constructors

SystemClock (ManagedPtr SystemClock)

Instances

GObject SystemClock

Methods

gobjectType :: SystemClock -> IO GType

IsObject SystemClock

IsObject SystemClock

IsClock SystemClock

IsSystemClock SystemClock

class GObject o => IsSystemClock o

Instances

(GObject a, UnknownAncestorError Constraint SystemClock a) => IsSystemClock a

IsSystemClock SystemClock

toSystemClock :: (MonadIO m, IsSystemClock o) => o -> m SystemClock

noSystemClock :: Maybe SystemClock

Methods

obtain

systemClockObtain

Arguments

:: (HasCallStack, MonadIO m)

=> m Clock

Returns: the default clock.

MT safe.

Get a handle to the default system clock. The refcount of the clock will be increased so you need to unref the clock after usage.

setDefault

systemClockSetDefault

Arguments

:: (HasCallStack, MonadIO m, IsClock a)

=> a

newClock: a Clock

-> m ()

Sets the default system clock that can be obtained with systemClockObtain.

This is mostly used for testing and debugging purposes when you want to have control over the time reported by the default system clock.

MT safe.

Since: 1.4

Properties

clockType

constructSystemClockClockType :: IsSystemClock o => ClockType -> IO (GValueConstruct o)

getSystemClockClockType :: (MonadIO m, IsSystemClock o) => o -> m ClockType

setSystemClockClockType :: (MonadIO m, IsSystemClock o) => o -> ClockType -> m ()