GstSystemClock

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.

GstSystemClock 

GObject
    ╰──GInitiallyUnowned
        ╰──GstObject
            ╰──GstClock
                ╰──GstSystemClock

The default implementation of a GstClock that uses the system time.

Members

clock (GstClock) –
No description available

Class structure

GstSystemClockClass

Fields
parent_class (GstClockClass) –
No description available

Gst.SystemClockClass

Attributes
parent_class (Gst.ClockClass) –
No description available

Gst.SystemClockClass

Attributes
parent_class (Gst.ClockClass) –
No description available

Gst.SystemClock 

GObject.Object
    ╰──GObject.InitiallyUnowned
        ╰──Gst.Object
            ╰──Gst.Clock
                ╰──Gst.SystemClock

The default implementation of a Gst.Clock that uses the system time.

Members

clock (Gst.Clock) –
No description available

Gst.SystemClock 

GObject.Object
    ╰──GObject.InitiallyUnowned
        ╰──Gst.Object
            ╰──Gst.Clock
                ╰──Gst.SystemClock

The default implementation of a Gst.Clock that uses the system time.

Members

clock (Gst.Clock) –
No description available

Constructors

gst_system_clock_new 

GstClock *
gst_system_clock_new (const gchar * name,
                      GstClockType clock_type)

Creates a new instance of the system clock. Unlike gst_system_clock_obtain this allows to apply custom calibration to it via gst_clock_set_calibration, set a master clock via gst_clock_set_master or change the clock-type property without changing the behaviour of the default system clock for the whole process.

Parameters:

name ( [nullable]) –

name of the new clock

clock_type –

GstClockType for the new clock

Returns ( [transfer: full]) –

the new system clock instance.

Since : 1.30

Gst.SystemClock.prototype.new 

function Gst.SystemClock.prototype.new(name: String, clock_type: Gst.ClockType): {
    // javascript wrapper for 'gst_system_clock_new'
}

Creates a new instance of the system clock. Unlike Gst.SystemClock.prototype.obtain this allows to apply custom calibration to it via Gst.Clock.prototype.set_calibration, set a master clock via Gst.Clock.prototype.set_master or change the clock-type property without changing the behaviour of the default system clock for the whole process.

Parameters:

name (String) –

name of the new clock

clock_type (Gst.ClockType) –

Gst.ClockType for the new clock

Returns (Gst.Clock) –

the new system clock instance.

Since : 1.30

Gst.SystemClock.new 

def Gst.SystemClock.new (name, clock_type):
    #python wrapper for 'gst_system_clock_new'

Creates a new instance of the system clock. Unlike Gst.SystemClock.obtain this allows to apply custom calibration to it via Gst.Clock.set_calibration, set a master clock via Gst.Clock.set_master or change the clock-type property without changing the behaviour of the default system clock for the whole process.

Parameters:

name (str) –

name of the new clock

clock_type (Gst.ClockType) –

Gst.ClockType for the new clock

Returns (Gst.Clock) –

the new system clock instance.

Since : 1.30

Functions

gst_system_clock_obtain 

GstClock *
gst_system_clock_obtain ()

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.

Changing the calibration via gst_clock_set_calibration, setting a master clock via gst_clock_set_master or changing the clock-type property on the returned clock will change the behaviour for the whole process.

Returns ( [transfer: full]) –

the default clock.

MT safe.

Gst.SystemClock.prototype.obtain 

function Gst.SystemClock.prototype.obtain(): {
    // javascript wrapper for 'gst_system_clock_obtain'
}

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.

Changing the calibration via Gst.Clock.prototype.set_calibration, setting a master clock via Gst.Clock.prototype.set_master or changing the clock-type property on the returned clock will change the behaviour for the whole process.

Returns (Gst.Clock) –

the default clock.

MT safe.

Gst.SystemClock.obtain 

def Gst.SystemClock.obtain ():
    #python wrapper for 'gst_system_clock_obtain'

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.

Changing the calibration via Gst.Clock.set_calibration, setting a master clock via Gst.Clock.set_master or changing the clock-type property on the returned clock will change the behaviour for the whole process.

Returns (Gst.Clock) –

the default clock.

MT safe.

gst_system_clock_set_default 

gst_system_clock_set_default (GstClock * new_clock)

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

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.

Parameters:

new_clock ( [allow-none]) –

a GstClock

Since : 1.4

Gst.SystemClock.prototype.set_default 

function Gst.SystemClock.prototype.set_default(new_clock: Gst.Clock): {
    // javascript wrapper for 'gst_system_clock_set_default'
}

Sets the default system clock that can be obtained with Gst.SystemClock.prototype.obtain.

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.

Parameters:

new_clock (Gst.Clock) –

a Gst.Clock

Since : 1.4

Gst.SystemClock.set_default 

def Gst.SystemClock.set_default (new_clock):
    #python wrapper for 'gst_system_clock_set_default'

Sets the default system clock that can be obtained with Gst.SystemClock.obtain.

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.

Parameters:

new_clock (Gst.Clock) –

a Gst.Clock

Since : 1.4

Properties

clock-type 

“clock-type” GstClockType *

Flags : Read / Write

clock-type 

“clock-type” Gst.ClockType

Flags : Read / Write

clock_type 

“self.props.clock_type” Gst.ClockType

Flags : Read / Write

Function Macros

GST_SYSTEM_CLOCK_CAST 

#define GST_SYSTEM_CLOCK_CAST(obj)              ((GstSystemClock *)(obj))

Enumerations

GstClockType

The different kind of clocks.

Members
GST_CLOCK_TYPE_REALTIME (0) –

time since Epoch

GST_CLOCK_TYPE_MONOTONIC (1) –

monotonic time since some unspecified starting point

GST_CLOCK_TYPE_OTHER (2) –

some other time source is used (Since: 1.0.5)

GST_CLOCK_TYPE_TAI (3) –

time since Epoch, but using International Atomic Time as reference (Since: 1.18)

Gst.ClockType

The different kind of clocks.

Members
Gst.ClockType.REALTIME (0) –

time since Epoch

Gst.ClockType.MONOTONIC (1) –

monotonic time since some unspecified starting point

Gst.ClockType.OTHER (2) –

some other time source is used (Since: 1.0.5)

Gst.ClockType.TAI (3) –

time since Epoch, but using International Atomic Time as reference (Since: 1.18)

Gst.ClockType

The different kind of clocks.

Members
Gst.ClockType.REALTIME (0) –

time since Epoch

Gst.ClockType.MONOTONIC (1) –

monotonic time since some unspecified starting point

Gst.ClockType.OTHER (2) –

some other time source is used (Since: 1.0.5)

Gst.ClockType.TAI (3) –

time since Epoch, but using International Atomic Time as reference (Since: 1.18)

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