:right-sidebar: True

TimedValueControlSource
===================================================================

.. currentmodule:: gi.repository.GstController





.. class:: TimedValueControlSource(**properties: ~typing.Any)
   :no-contents-entry:


Superclasses: :class:`~gi.repository.Gst.ControlSource`, :class:`~gi.repository.Gst.Object`, :class:`~gi.repository.GObject.InitiallyUnowned`, :class:`~gi.repository.GObject.Object`


Subclasses: :class:`~gi.repository.GstController.InterpolationControlSource`, :class:`~gi.repository.GstController.TriggerControlSource`




Base class for :obj:`~gi.repository.Gst.ControlSource` that use time-stamped values.

When overriding bind, chain up first to give this bind implementation a
chance to setup things.

All functions are MT-safe.




Methods
-------

.. rst-class:: interim-class

.. class:: TimedValueControlSource
   :no-index:


   .. method:: find_control_point_iter(timestamp: int) -> ~gi.repository.GLib.SequenceIter | None

      Find last value before given timestamp in control point list.
      If all values in the control point list come after the given
      timestamp or no values exist, :const:`None` is returned.

      For use in control source implementations.






      :param timestamp: the search key




   .. method:: get_all() -> list[~gi.repository.Gst.TimedValue]

      Returns a read-only copy of the list of :obj:`~gi.repository.Gst.TimedValue` for the given property.
      Free the list after done with it.









   .. method:: get_count() -> int

      Get the number of control points that are set.









   .. method:: set(timestamp: int, value: float) -> bool

      Set the value of given controller-handled property at a certain time.






      :param timestamp: the time the control-change is scheduled for

      :param value: the control-value




   .. method:: set_from_list(timedvalues: list[~gi.repository.Gst.TimedValue]) -> bool

      Sets multiple timed values at once.






      :param timedvalues: a list
         with :obj:`~gi.repository.Gst.TimedValue` items




   .. method:: unset(timestamp: int) -> bool

      Used to remove the value of given controller-handled property at a certain
      time.






      :param timestamp: the time the control-change should be removed from




   .. method:: unset_all() -> None

      Used to remove all time-stamped values of given controller-handled property















Signals
-------

.. rst-class:: interim-class

.. class:: TimedValueControlSource.signals
   :no-index:
   

   .. method:: value_added(timed_value: ~gi.repository.GstController.ControlPoint) -> None

      The type of the None singleton.



      .. versionadded:: 1.6





      :param timed_value: The newly added :obj:`~gi.repository.Gst.TimedValue`




   .. method:: value_changed(timed_value: ~gi.repository.GstController.ControlPoint) -> None

      The type of the None singleton.



      .. versionadded:: 1.6





      :param timed_value: The :obj:`~gi.repository.Gst.TimedValue` where the value changed




   .. method:: value_removed(timed_value: ~gi.repository.GstController.ControlPoint) -> None

      The type of the None singleton.



      .. versionadded:: 1.6





      :param timed_value: The removed :obj:`~gi.repository.Gst.TimedValue`










Fields
------

.. rst-class:: interim-class

.. class:: TimedValueControlSource
   :no-index:
   

   .. attribute:: lock

      






   .. attribute:: nvalues

      






   .. attribute:: parent

      






   .. attribute:: priv

      






   .. attribute:: valid_cache

      






   .. attribute:: values