libgstreamerd-3-dev 3.7.5-2build1 / usr / include / d / gtkd-3 / gstreamer / ControlBinding.d

/*
 * This file is part of gtkD.
 *
 * gtkD is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 3
 * of the License, or (at your option) any later version, with
 * some exceptions, please read the COPYING file.
 *
 * gtkD is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with gtkD; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110, USA
 */

// generated automatically - do not change
// find conversion definition on APILookup.txt
// implement new conversion functionalities on the wrap.utils pakage


module gstreamer.ControlBinding;

private import gobject.ObjectG;
private import gobject.Value;
private import gstreamer.ObjectGst;
private import gstreamer.c.functions;
public  import gstreamer.c.types;
public  import gstreamerc.gstreamertypes;


/**
 * A base class for value mapping objects that attaches control sources to gobject
 * properties. Such an object is taking one or more #GstControlSource instances,
 * combines them and maps the resulting value to the type and value range of the
 * bound property.
 */
public class ControlBinding : ObjectGst
{
	/** the main Gtk struct */
	protected GstControlBinding* gstControlBinding;

	/** Get the main Gtk struct */
	public GstControlBinding* getControlBindingStruct(bool transferOwnership = false)
	{
		if (transferOwnership)
			ownedRef = false;
		return gstControlBinding;
	}

	/** the main Gtk struct as a void* */
	protected override void* getStruct()
	{
		return cast(void*)gstControlBinding;
	}

	protected override void setStruct(GObject* obj)
	{
		gstControlBinding = cast(GstControlBinding*)obj;
		super.setStruct(obj);
	}

	/**
	 * Sets our main struct and passes it to the parent class.
	 */
	public this (GstControlBinding* gstControlBinding, bool ownedRef = false)
	{
		this.gstControlBinding = gstControlBinding;
		super(cast(GstObject*)gstControlBinding, ownedRef);
	}


	/** */
	public static GType getType()
	{
		return gst_control_binding_get_type();
	}

	/**
	 * Gets a number of #GValues for the given controlled property starting at the
	 * requested time. The array @values need to hold enough space for @n_values of
	 * #GValue.
	 *
	 * This function is useful if one wants to e.g. draw a graph of the control
	 * curve or apply a control curve sample by sample.
	 *
	 * Params:
	 *     timestamp = the time that should be processed
	 *     interval = the time spacing between subsequent values
	 *     values = array to put control-values in
	 *
	 * Returns: %TRUE if the given array could be filled, %FALSE otherwise
	 */
	public bool getGValueArray(GstClockTime timestamp, GstClockTime interval, Value[] values)
	{
		GValue[] valuesArray = new GValue[values.length];
		for ( int i = 0; i < values.length; i++ )
		{
			valuesArray[i] = *(values[i].getValueStruct());
		}

		return gst_control_binding_get_g_value_array(gstControlBinding, timestamp, interval, cast(uint)values.length, valuesArray.ptr) != 0;
	}

	/**
	 * Gets the value for the given controlled property at the requested time.
	 *
	 * Params:
	 *     timestamp = the time the control-change should be read from
	 *
	 * Returns: the GValue of the property at the given time,
	 *     or %NULL if the property isn't controlled.
	 */
	public Value getValue(GstClockTime timestamp)
	{
		auto p = gst_control_binding_get_value(gstControlBinding, timestamp);

		if(p is null)
		{
			return null;
		}

		return ObjectG.getDObject!(Value)(cast(GValue*) p, true);
	}

	/**
	 * Gets a number of values for the given controlled property starting at the
	 * requested time. The array @values need to hold enough space for @n_values of
	 * the same type as the objects property's type.
	 *
	 * This function is useful if one wants to e.g. draw a graph of the control
	 * curve or apply a control curve sample by sample.
	 *
	 * The values are unboxed and ready to be used. The similar function
	 * gst_control_binding_get_g_value_array() returns the array as #GValues and is
	 * more suitable for bindings.
	 *
	 * Params:
	 *     timestamp = the time that should be processed
	 *     interval = the time spacing between subsequent values
	 *     values = array to put control-values in
	 *
	 * Returns: %TRUE if the given array could be filled, %FALSE otherwise
	 */
	public bool getValueArray(GstClockTime timestamp, GstClockTime interval, void*[] values)
	{
		return gst_control_binding_get_value_array(gstControlBinding, timestamp, interval, cast(uint)values.length, values.ptr) != 0;
	}

	/**
	 * Check if the control binding is disabled.
	 *
	 * Returns: %TRUE if the binding is inactive
	 */
	public bool isDisabled()
	{
		return gst_control_binding_is_disabled(gstControlBinding) != 0;
	}

	/**
	 * This function is used to disable a control binding for some time, i.e.
	 * gst_object_sync_values() will do nothing.
	 *
	 * Params:
	 *     disabled = boolean that specifies whether to disable the controller
	 *         or not.
	 */
	public void setDisabled(bool disabled)
	{
		gst_control_binding_set_disabled(gstControlBinding, disabled);
	}

	/**
	 * Sets the property of the @object, according to the #GstControlSources that
	 * handle them and for the given timestamp.
	 *
	 * If this function fails, it is most likely the application developers fault.
	 * Most probably the control sources are not setup correctly.
	 *
	 * Params:
	 *     object = the object that has controlled properties
	 *     timestamp = the time that should be processed
	 *     lastSync = the last time this was called
	 *
	 * Returns: %TRUE if the controller value could be applied to the object
	 *     property, %FALSE otherwise
	 */
	public bool syncValues(ObjectGst object, GstClockTime timestamp, GstClockTime lastSync)
	{
		return gst_control_binding_sync_values(gstControlBinding, (object is null) ? null : object.getObjectGstStruct(), timestamp, lastSync) != 0;
	}
}