GstTimedValueControlSource

Base class for GstControlSource 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.

GstControlPoint

An internal structure for value+time and various temporary values used for interpolation. This "inherits" from GstTimedValue.

Members

timestamp (GstClockTime) –

timestamp of the value change

value (gdouble) –

the new value

h (gdouble) –
No description available
z (gdouble) –
No description available
c1s (gdouble) –
No description available
c2s (gdouble) –
No description available
c3s (gdouble) –
No description available
_gst_reserved (guint8 *) –
No description available

GstControlPoint

An internal structure for value+time and various temporary values used for interpolation. This "inherits" from GstTimedValue.

Members

timestamp (GstClockTime) –

timestamp of the value change

value (Number) –

the new value


GstControlPoint

An internal structure for value+time and various temporary values used for interpolation. This "inherits" from GstTimedValue.

Members

timestamp (GstClockTime) –

timestamp of the value change

value (float) –

the new value


Methods

gst_control_point_copy

GstControlPoint *
gst_control_point_copy (GstControlPoint * cp)

Copies a GstControlPoint

Parameters:

cp

The control point to copy

Returns

A copy of cp


GstController.ControlPoint.prototype.copy

function GstController.ControlPoint.prototype.copy(): {
    // javascript wrapper for 'gst_control_point_copy'
}

Copies a GstController.ControlPoint

Parameters:

The control point to copy

Returns ( GstController.ControlPoint ) –

A copy of cp


GstController.ControlPoint.copy

def GstController.ControlPoint.copy (self):
    #python wrapper for 'gst_control_point_copy'

Copies a GstController.ControlPoint

Parameters:

The control point to copy

Returns ( GstController.ControlPoint ) –

A copy of cp


gst_control_point_free

gst_control_point_free (GstControlPoint * cp)

Frees all data allocated by a GstControlPoint instance.

Parameters:

cp

the object to free


GstController.ControlPoint.prototype.free

function GstController.ControlPoint.prototype.free(): {
    // javascript wrapper for 'gst_control_point_free'
}

Frees all data allocated by a GstController.ControlPoint instance.

Parameters:

the object to free


GstController.ControlPoint.free

def GstController.ControlPoint.free (self):
    #python wrapper for 'gst_control_point_free'

Frees all data allocated by a GstController.ControlPoint instance.

Parameters:

the object to free


GstTimedValueControlSource

GObject
    ╰──GInitiallyUnowned
        ╰──GstObject
            ╰──GstControlSource
                ╰──GstTimedValueControlSource
                    ╰──GstInterpolationControlSource
                    ╰──GstTriggerControlSource

The instance structure of GstControlSource.

Members

parent (GstControlSource) –
No description available
lock (GMutex) –
No description available
values (GSequence *) –
No description available
nvalues (gint) –
No description available
valid_cache (gboolean) –
No description available

Class structure

GstTimedValueControlSourceClass

Fields
parent_class (GstControlSourceClass) –
No description available

GstController.TimedValueControlSourceClass

Attributes
parent_class (Gst.ControlSourceClass) –
No description available

GstController.TimedValueControlSourceClass

Attributes
parent_class (Gst.ControlSourceClass) –
No description available

GstTimedValueControlSource

GObject
    ╰──GInitiallyUnowned
        ╰──GstObject
            ╰──GstControlSource
                ╰──GstTimedValueControlSource
                    ╰──GstInterpolationControlSource
                    ╰──GstTriggerControlSource

The instance structure of GstControlSource.

Members

parent (GstControlSource) –
No description available
lock (GMutex) –
No description available
values (GSequence) –
No description available
nvalues (Number) –
No description available
valid_cache (Number) –
No description available

GstTimedValueControlSource

GObject
    ╰──GInitiallyUnowned
        ╰──GstObject
            ╰──GstControlSource
                ╰──GstTimedValueControlSource
                    ╰──GstInterpolationControlSource
                    ╰──GstTriggerControlSource

The instance structure of GstControlSource.

Members

parent (GstControlSource) –
No description available
lock (GMutex) –
No description available
values (GSequence) –
No description available
nvalues (int) –
No description available
valid_cache (bool) –
No description available

Methods

gst_timed_value_control_source_find_control_point_iter

GSequenceIter *
gst_timed_value_control_source_find_control_point_iter (GstTimedValueControlSource * self,
                                                        GstClockTime timestamp)

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, NULL is returned.

For use in control source implementations.

Parameters:

self

the control source to search in

timestamp

the search key

Returns ( [transfer: none] ) –

the found GSequenceIter or NULL


GstController.TimedValueControlSource.prototype.find_control_point_iter

function GstController.TimedValueControlSource.prototype.find_control_point_iter(timestamp: Number): {
    // javascript wrapper for 'gst_timed_value_control_source_find_control_point_iter'
}

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, null is returned.

For use in control source implementations.

Parameters:

the control source to search in

timestamp ( Number ) –

the search key

Returns ( GLib.SequenceIter ) –

the found GLib.SequenceIter or null


GstController.TimedValueControlSource.find_control_point_iter

def GstController.TimedValueControlSource.find_control_point_iter (self, timestamp):
    #python wrapper for 'gst_timed_value_control_source_find_control_point_iter'

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, None is returned.

For use in control source implementations.

Parameters:

the control source to search in

timestamp ( int ) –

the search key

Returns ( GLib.SequenceIter ) –

the found GLib.SequenceIter or None


gst_timed_value_control_source_get_all

GList *
gst_timed_value_control_source_get_all (GstTimedValueControlSource * self)

Returns a read-only copy of the list of GstTimedValue for the given property. Free the list after done with it.

Parameters:

self

the GstTimedValueControlSource to get the list from

Returns ( [transfer: container] [element-type GstTimedValue] ) –

a copy of the list, or NULL if the property isn't handled by the controller


GstController.TimedValueControlSource.prototype.get_all

function GstController.TimedValueControlSource.prototype.get_all(): {
    // javascript wrapper for 'gst_timed_value_control_source_get_all'
}

Returns a read-only copy of the list of Gst.TimedValue for the given property. Free the list after done with it.

Parameters:

Returns ( [ Gst.TimedValue ] ) –

a copy of the list, or null if the property isn't handled by the controller


GstController.TimedValueControlSource.get_all

def GstController.TimedValueControlSource.get_all (self):
    #python wrapper for 'gst_timed_value_control_source_get_all'

Returns a read-only copy of the list of Gst.TimedValue for the given property. Free the list after done with it.

Parameters:

Returns ( [ Gst.TimedValue ] ) –

a copy of the list, or None if the property isn't handled by the controller


gst_timed_value_control_source_get_count

gint
gst_timed_value_control_source_get_count (GstTimedValueControlSource * self)

Get the number of control points that are set.

Parameters:

self

the GstTimedValueControlSource to get the number of values from

Returns

the number of control points that are set.


GstController.TimedValueControlSource.prototype.get_count

function GstController.TimedValueControlSource.prototype.get_count(): {
    // javascript wrapper for 'gst_timed_value_control_source_get_count'
}

Get the number of control points that are set.

Parameters:

the GstController.TimedValueControlSource to get the number of values from

Returns ( Number ) –

the number of control points that are set.


GstController.TimedValueControlSource.get_count

def GstController.TimedValueControlSource.get_count (self):
    #python wrapper for 'gst_timed_value_control_source_get_count'

Get the number of control points that are set.

Parameters:

the GstController.TimedValueControlSource to get the number of values from

Returns ( int ) –

the number of control points that are set.


gst_timed_value_control_source_set

gboolean
gst_timed_value_control_source_set (GstTimedValueControlSource * self,
                                    GstClockTime timestamp,
                                    const gdouble value)

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

Parameters:

self

the GstTimedValueControlSource object

timestamp

the time the control-change is scheduled for

value

the control-value

Returns

FALSE if the values couldn't be set, TRUE otherwise.


GstController.TimedValueControlSource.prototype.set

function GstController.TimedValueControlSource.prototype.set(timestamp: Number, value: Number): {
    // javascript wrapper for 'gst_timed_value_control_source_set'
}

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

Parameters:

timestamp ( Number ) –

the time the control-change is scheduled for

value ( Number ) –

the control-value

Returns ( Number ) –

FALSE if the values couldn't be set, TRUE otherwise.


GstController.TimedValueControlSource.set

def GstController.TimedValueControlSource.set (self, timestamp, value):
    #python wrapper for 'gst_timed_value_control_source_set'

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

Parameters:

timestamp ( int ) –

the time the control-change is scheduled for

value ( float ) –

the control-value

Returns ( bool ) –

FALSE if the values couldn't be set, TRUE otherwise.


gst_timed_value_control_source_set_from_list

gboolean
gst_timed_value_control_source_set_from_list (GstTimedValueControlSource * self,
                                              const GSList * timedvalues)

Sets multiple timed values at once.

Parameters:

self

the GstTimedValueControlSource object

timedvalues ( [transfer: none] [element-type GstTimedValue] ) –

a list with GstTimedValue items

Returns

FALSE if the values couldn't be set, TRUE otherwise.


GstController.TimedValueControlSource.prototype.set_from_list

function GstController.TimedValueControlSource.prototype.set_from_list(timedvalues: GLib.SList): {
    // javascript wrapper for 'gst_timed_value_control_source_set_from_list'
}

Sets multiple timed values at once.

Parameters:

timedvalues ( GLib.SList ) –

a list with Gst.TimedValue items

Returns ( Number ) –

FALSE if the values couldn't be set, TRUE otherwise.


GstController.TimedValueControlSource.set_from_list

def GstController.TimedValueControlSource.set_from_list (self, timedvalues):
    #python wrapper for 'gst_timed_value_control_source_set_from_list'

Sets multiple timed values at once.

Parameters:

timedvalues ( GLib.SList ) –

a list with Gst.TimedValue items

Returns ( bool ) –

FALSE if the values couldn't be set, TRUE otherwise.


gst_timed_value_control_source_unset

gboolean
gst_timed_value_control_source_unset (GstTimedValueControlSource * self,
                                      GstClockTime timestamp)

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

Parameters:

self

the GstTimedValueControlSource object

timestamp

the time the control-change should be removed from

Returns

FALSE if the value couldn't be unset (i.e. not found, TRUE otherwise.


GstController.TimedValueControlSource.prototype.unset

function GstController.TimedValueControlSource.prototype.unset(timestamp: Number): {
    // javascript wrapper for 'gst_timed_value_control_source_unset'
}

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

Parameters:

timestamp ( Number ) –

the time the control-change should be removed from

Returns ( Number ) –

FALSE if the value couldn't be unset (i.e. not found, TRUE otherwise.


GstController.TimedValueControlSource.unset

def GstController.TimedValueControlSource.unset (self, timestamp):
    #python wrapper for 'gst_timed_value_control_source_unset'

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

Parameters:

timestamp ( int ) –

the time the control-change should be removed from

Returns ( bool ) –

FALSE if the value couldn't be unset (i.e. not found, TRUE otherwise.


gst_timed_value_control_source_unset_all

gst_timed_value_control_source_unset_all (GstTimedValueControlSource * self)

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

Parameters:

self

the GstTimedValueControlSource object


GstController.TimedValueControlSource.prototype.unset_all

function GstController.TimedValueControlSource.prototype.unset_all(): {
    // javascript wrapper for 'gst_timed_value_control_source_unset_all'
}

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


GstController.TimedValueControlSource.unset_all

def GstController.TimedValueControlSource.unset_all (self):
    #python wrapper for 'gst_timed_value_control_source_unset_all'

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


Signals

value-added

value_added_callback (GstTimedValueControlSource * self,
                      GstControlPoint * timed_value,
                      gpointer user_data)

Emitted right after the new value has been added to self

Parameters:

self

The GstTimedValueControlSource into which a GstTimedValue has been added

timed_value

The newly added GstTimedValue

user_data
No description available

Flags: Run First

Since : 1.6


value-added

function value_added_callback(self: GstController.TimedValueControlSource, timed_value: GstController.ControlPoint, user_data: Object): {
    // javascript callback for the 'value-added' signal
}

Emitted right after the new value has been added to self

Parameters:

timed_value ( GstController.ControlPoint ) –

The newly added Gst.TimedValue

user_data ( Object ) –
No description available

Flags: Run First

Since : 1.6


value-added

def value_added_callback (self, timed_value, *user_data):
    #python callback for the 'value-added' signal

Emitted right after the new value has been added to self

Parameters:

timed_value ( GstController.ControlPoint ) –

The newly added Gst.TimedValue

user_data ( variadic ) –
No description available

Flags: Run First

Since : 1.6


value-changed

value_changed_callback (GstTimedValueControlSource * self,
                        GstControlPoint * timed_value,
                        gpointer user_data)

Emitted right after the new value has been set on timed_signals

Parameters:

self

The GstTimedValueControlSource on which a GstTimedValue has changed

timed_value

The GstTimedValue where the value changed

user_data
No description available

Flags: Run First

Since : 1.6


value-changed

function value_changed_callback(self: GstController.TimedValueControlSource, timed_value: GstController.ControlPoint, user_data: Object): {
    // javascript callback for the 'value-changed' signal
}

Emitted right after the new value has been set on timed_signals

Parameters:

timed_value ( GstController.ControlPoint ) –

The Gst.TimedValue where the value changed

user_data ( Object ) –
No description available

Flags: Run First

Since : 1.6


value-changed

def value_changed_callback (self, timed_value, *user_data):
    #python callback for the 'value-changed' signal

Emitted right after the new value has been set on timed_signals

Parameters:

timed_value ( GstController.ControlPoint ) –

The Gst.TimedValue where the value changed

user_data ( variadic ) –
No description available

Flags: Run First

Since : 1.6


value-removed

value_removed_callback (GstTimedValueControlSource * self,
                        GstControlPoint * timed_value,
                        gpointer user_data)

Emitted when timed_value is removed from self

Parameters:

self

The GstTimedValueControlSource from which a GstTimedValue has been removed

timed_value

The removed GstTimedValue

user_data
No description available

Flags: Run First

Since : 1.6


value-removed

function value_removed_callback(self: GstController.TimedValueControlSource, timed_value: GstController.ControlPoint, user_data: Object): {
    // javascript callback for the 'value-removed' signal
}

Emitted when timed_value is removed from self

Parameters:

timed_value ( GstController.ControlPoint ) –

The removed Gst.TimedValue

user_data ( Object ) –
No description available

Flags: Run First

Since : 1.6


value-removed

def value_removed_callback (self, timed_value, *user_data):
    #python callback for the 'value-removed' signal

Emitted when timed_value is removed from self

Parameters:

timed_value ( GstController.ControlPoint ) –

The removed Gst.TimedValue

user_data ( variadic ) –
No description available

Flags: Run First

Since : 1.6


Functions

gst_timed_value_control_invalidate_cache

gst_timed_value_control_invalidate_cache (GstTimedValueControlSource * self)

Reset the controlled value cache.

Parameters:


GstController.prototype.timed_value_control_invalidate_cache

function GstController.prototype.timed_value_control_invalidate_cache(self: GstController.TimedValueControlSource): {
    // javascript wrapper for 'gst_timed_value_control_invalidate_cache'
}

Reset the controlled value cache.


GstController.timed_value_control_invalidate_cache

def GstController.timed_value_control_invalidate_cache (self):
    #python wrapper for 'gst_timed_value_control_invalidate_cache'

Reset the controlled value cache.


Function Macros

GST_TIMED_VALUE_CONTROL_SOURCE_LOCK

#define GST_TIMED_VALUE_CONTROL_SOURCE_LOCK(o) \
  g_mutex_lock(&((GstTimedValueControlSource *)o)->lock)

GST_TIMED_VALUE_CONTROL_SOURCE_UNLOCK

#define GST_TIMED_VALUE_CONTROL_SOURCE_UNLOCK(o) \
  g_mutex_unlock(&((GstTimedValueControlSource *)o)->lock)

Constants

GST_TYPE_TIMED_VALUE_CONTROL_SOURCE

#define GST_TYPE_TIMED_VALUE_CONTROL_SOURCE \
  (gst_timed_value_control_source_get_type ())

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