12 KiB
A value mapping object that attaches multiple control sources to a guint gobject properties representing a color. A control value of 0.0 will turn the color component off and a value of 1.0 will be the color level.
Implements
ARGBControlBindingExt, [trait@gst::ControlBindingExt], [trait@gst::ObjectExt]
Trait containing all ARGBControlBinding methods.
Implementors
ARGBControlBinding
Create a new control-binding that attaches the given gst::ControlSource to the
glib::object::Object property.
object
the object of the property
property_name
the property-name to attach the control source
cs_a
the control source for the alpha channel
cs_r
the control source for the red channel
cs_g
the control source for the green channel
cs_b
the control source for the blue channel
Returns
the new ARGBControlBinding
An internal structure for value+time and various temporary values used for interpolation. This "inherits" from GstTimedValue.
Copies a ControlPoint
Returns
A copy of self
Frees all data allocated by a ControlPoint instance.
A value mapping object that attaches control sources to gobject properties. It will map the control values directly to the target property range. If a non-absolute direct control binding is used, the value range [0.0 ... 1.0] is mapped to full target property range, and all values outside the range will be clipped. An absolute control binding will not do any value transformations.
Implements
DirectControlBindingExt, [trait@gst::ControlBindingExt], [trait@gst::ObjectExt]
Trait containing all DirectControlBinding methods.
Implementors
DirectControlBinding
Create a new control-binding that attaches the gst::ControlSource to the
glib::object::Object property. It will map the control source range [0.0 ... 1.0] to
the full target property range, and clip all values outside this range.
object
the object of the property
property_name
the property-name to attach the control source
cs
the control source
Returns
the new DirectControlBinding
Create a new control-binding that attaches the gst::ControlSource to the
glib::object::Object property. It will directly map the control source values to the
target property range without any transformations.
object
the object of the property
property_name
the property-name to attach the control source
cs
the control source
Returns
the new DirectControlBinding
InterpolationControlSource is a gst::ControlSource, that interpolates values between user-given
control points. It supports several interpolation modes and property types.
To use InterpolationControlSource get a new instance by calling
InterpolationControlSource::new, bind it to a glib::object::ParamSpec and set some
control points by calling TimedValueControlSourceExt::set.
All functions are MT-safe.
Implements
InterpolationControlSourceExt, TimedValueControlSourceExt, [trait@gst::ControlSourceExt], [trait@gst::ObjectExt]
Trait containing all InterpolationControlSource methods.
Implementors
InterpolationControlSource
This returns a new, unbound InterpolationControlSource.
Returns
a new, unbound InterpolationControlSource.
The various interpolation modes available.
steps-like interpolation, default
linear interpolation
cubic interpolation (natural), may overshoot the min or max values set by the control point, but is more 'curvy'
monotonic cubic interpolation, will not produce any values outside of the min-max range set by the control points (Since: 1.8)
LFOControlSource is a gst::ControlSource, that provides several periodic
waveforms as control values.
To use LFOControlSource get a new instance by calling
LFOControlSource::new, bind it to a glib::object::ParamSpec and set the relevant
properties.
All functions are MT-safe.
Implements
LFOControlSourceExt, [trait@gst::ControlSourceExt], [trait@gst::ObjectExt]
Trait containing all LFOControlSource methods.
Implementors
LFOControlSource
This returns a new, unbound LFOControlSource.
Returns
a new, unbound LFOControlSource.
Specifies the amplitude for the waveform of this LFOControlSource.
Specifies the amplitude for the waveform of this LFOControlSource.
Specifies the frequency that should be used for the waveform
of this LFOControlSource. It should be large enough
so that the period is longer than one nanosecond.
Specifies the frequency that should be used for the waveform
of this LFOControlSource. It should be large enough
so that the period is longer than one nanosecond.
Specifies the value offset for the waveform of this LFOControlSource.
Specifies the value offset for the waveform of this LFOControlSource.
Specifies the timeshift to the right that should be used for the waveform
of this LFOControlSource in nanoseconds.
To get a n nanosecond shift to the left use "(GST_SECOND / frequency) - n".
Specifies the timeshift to the right that should be used for the waveform
of this LFOControlSource in nanoseconds.
To get a n nanosecond shift to the left use "(GST_SECOND / frequency) - n".
Specifies the waveform that should be used for this LFOControlSource.
Specifies the waveform that should be used for this LFOControlSource.
The various waveform modes available.
sine waveform
square waveform
saw waveform
reverse saw waveform
triangle waveform
A gst::ControlBinding that forwards requests to another gst::ControlBinding
Feature: v1_12
Implements
[trait@gst::ControlBindingExt], [trait@gst::ObjectExt]
ProxyControlBinding forwards all access to data or sync_values()
requests from property_name on object to the control binding at
ref_property_name on ref_object.
Feature: v1_12
object
a gst::Object
property_name
the property name in object to control
ref_object
a gst::Object to forward all
gst::ControlBinding requests to
ref_property_name
the property_name in ref_object to control
Returns
a new gst::ControlBinding that proxies the control interface between
properties on different gst::Object's
Base class for 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.
This is an Abstract Base Class, you cannot instantiate it.
Implements
TimedValueControlSourceExt, [trait@gst::ControlSourceExt], [trait@gst::ObjectExt]
Trait containing all TimedValueControlSource methods.
Implementors
InterpolationControlSource, TimedValueControlSource, TriggerControlSource
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.
timestamp
the search key
Returns
the found glib::SequenceIter or None
Returns a read-only copy of the list of gst::TimedValue for the given property.
Free the list after done with it.
Returns
a copy
of the list, or None if the property isn't handled by the controller
Get the number of control points that are set.
Returns
the number of control points that are set.
Set the value of given controller-handled property at a certain time.
timestamp
the time the control-change is scheduled for
value
the control-value
Returns
FALSE if the values couldn't be set, TRUE otherwise.
Sets multiple timed values at once.
timedvalues
a list
with gst::TimedValue items
Returns
FALSE if the values couldn't be set, TRUE otherwise.
Used to remove the value of given controller-handled property at a certain time.
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.
Used to remove all time-stamped values of given controller-handled property
Emitted right after the new value has been added to self_
timed_value
The newly added gst::TimedValue
Emitted right after the new value has been set on timed_signals
timed_value
The gst::TimedValue where the value changed
Emitted when timed_value is removed from self_
timed_value
The removed gst::TimedValue
TriggerControlSource is a gst::ControlSource, that returns values from user-given
control points. It allows for a tolerance on the time-stamps.
To use TriggerControlSource get a new instance by calling
TriggerControlSource::new, bind it to a glib::object::ParamSpec and set some
control points by calling TimedValueControlSourceExt::set.
All functions are MT-safe.
Implements
TriggerControlSourceExt, TimedValueControlSourceExt, [trait@gst::ControlSourceExt], [trait@gst::ObjectExt]
Trait containing all TriggerControlSource methods.
Implementors
TriggerControlSource
This returns a new, unbound TriggerControlSource.
Returns
a new, unbound TriggerControlSource.