/**
* SECTION:gstobject
+ * @title: GstObject
* @short_description: Base class for the GStreamer object hierarchy
*
* #GstObject provides a root for the object hierarchy tree filed in by the
* gst_object_set_name() and gst_object_get_name() are used to set/get the name
* of the object.
*
- * <refsect2>
- * <title>controlled properties</title>
- * <para>
+ * ## controlled properties
+ *
* Controlled properties offers a lightweight way to adjust gobject properties
* over stream-time. It works by using time-stamped value pairs that are queued
* for element-properties. At run-time the elements continuously pull value
*
* What needs to be changed in a #GstElement?
* Very little - it is just two steps to make a plugin controllable!
- * <orderedlist>
- * <listitem><para>
- * mark gobject-properties paramspecs that make sense to be controlled,
+ *
+ * * mark gobject-properties paramspecs that make sense to be controlled,
* by GST_PARAM_CONTROLLABLE.
- * </para></listitem>
- * <listitem><para>
- * when processing data (get, chain, loop function) at the beginning call
+ *
+ * * when processing data (get, chain, loop function) at the beginning call
* gst_object_sync_values(element,timestamp).
* This will make the controller update all GObject properties that are
* under its control with the current values based on the timestamp.
- * </para></listitem>
- * </orderedlist>
- *
- * What needs to be done in applications?
- * Again it's not a lot to change.
- * <orderedlist>
- * <listitem><para>
- * create a #GstControlSource.
+ *
+ * What needs to be done in applications? Again it's not a lot to change.
+ *
+ * * create a #GstControlSource.
* csource = gst_interpolation_control_source_new ();
* g_object_set (csource, "mode", GST_INTERPOLATION_MODE_LINEAR, NULL);
- * </para></listitem>
- * <listitem><para>
- * Attach the #GstControlSource on the controller to a property.
+ *
+ * * Attach the #GstControlSource on the controller to a property.
* gst_object_add_control_binding (object, gst_direct_control_binding_new (object, "prop1", csource));
- * </para></listitem>
- * <listitem><para>
- * Set the control values
+ *
+ * * Set the control values
* gst_timed_value_control_source_set ((GstTimedValueControlSource *)csource,0 * GST_SECOND, value1);
* gst_timed_value_control_source_set ((GstTimedValueControlSource *)csource,1 * GST_SECOND, value2);
- * </para></listitem>
- * <listitem><para>
- * start your pipeline
- * </para></listitem>
- * </orderedlist>
- * </para>
- * </refsect2>
+ *
+ * * start your pipeline
*/
#include "gst_private.h"
#include "gstparamspecs.h"
#include "gstutils.h"
-#ifndef GST_DISABLE_TRACE
-#include "gsttrace.h"
-static GstAllocTrace *_gst_object_trace;
-#endif
-
#define DEBUG_REFCOUNT
/* Object signals and args */
G_DEFINE_ABSTRACT_TYPE (GstObject, gst_object, G_TYPE_INITIALLY_UNOWNED);
static void
+gst_object_constructed (GObject * object)
+{
+ GST_TRACER_OBJECT_CREATED (GST_OBJECT_CAST (object));
+
+ ((GObjectClass *) gst_object_parent_class)->constructed (object);
+}
+
+static void
gst_object_class_init (GstObjectClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
-#ifndef GST_DISABLE_TRACE
- _gst_object_trace =
- _gst_alloc_trace_register (g_type_name (GST_TYPE_OBJECT), -2);
-#endif
-
gobject_class->set_property = gst_object_set_property;
gobject_class->get_property = gst_object_get_property;
gobject_class->dispatch_properties_changed
= GST_DEBUG_FUNCPTR (gst_object_dispatch_properties_changed);
+ gobject_class->constructed = gst_object_constructed;
gobject_class->dispose = gst_object_dispose;
gobject_class->finalize = gst_object_finalize;
}
object->name = NULL;
GST_CAT_TRACE_OBJECT (GST_CAT_REFCOUNTING, object, "%p new", object);
-#ifndef GST_DISABLE_TRACE
- _gst_alloc_trace_new (_gst_object_trace, object);
-#endif
-
object->flags = 0;
object->control_rate = 100 * GST_MSECOND;
{
g_return_val_if_fail (object != NULL, NULL);
+ GST_TRACER_OBJECT_REFFED (object, ((GObject *) object)->ref_count + 1);
#ifdef DEBUG_REFCOUNT
GST_CAT_TRACE_OBJECT (GST_CAT_REFCOUNTING, object, "%p ref %d->%d", object,
((GObject *) object)->ref_count, ((GObject *) object)->ref_count + 1);
g_return_if_fail (object != NULL);
g_return_if_fail (((GObject *) object)->ref_count > 0);
+ GST_TRACER_OBJECT_UNREFFED (object, ((GObject *) object)->ref_count - 1);
#ifdef DEBUG_REFCOUNT
GST_CAT_TRACE_OBJECT (GST_CAT_REFCOUNTING, object, "%p unref %d->%d", object,
((GObject *) object)->ref_count, ((GObject *) object)->ref_count - 1);
* gst_object_replace:
* @oldobj: (inout) (transfer full) (nullable): pointer to a place of
* a #GstObject to replace
- * @newobj: (transfer none): a new #GstObject
+ * @newobj: (transfer none) (allow-none): a new #GstObject
*
* Atomically modifies a pointer to point to a new object.
* The reference count of @oldobj is decreased and the reference count of
GstObject *self = (GstObject *) object;
GstObject *parent;
- GST_CAT_TRACE_OBJECT (GST_CAT_REFCOUNTING, object, "dispose");
+ GST_CAT_TRACE_OBJECT (GST_CAT_REFCOUNTING, object, "%p dispose", object);
GST_OBJECT_LOCK (object);
if ((parent = GST_OBJECT_PARENT (object)))
{
GstObject *gstobject = GST_OBJECT_CAST (object);
- GST_CAT_TRACE_OBJECT (GST_CAT_REFCOUNTING, object, "finalize");
+ GST_CAT_TRACE_OBJECT (GST_CAT_REFCOUNTING, object, "%p finalize", object);
g_signal_handlers_destroy (object);
g_free (gstobject->name);
g_mutex_clear (&gstobject->lock);
-#ifndef GST_DISABLE_TRACE
- _gst_alloc_trace_free (_gst_object_trace, object);
-#endif
+ GST_TRACER_OBJECT_DESTROYED (gstobject);
((GObjectClass *) gst_object_parent_class)->finalize (object);
}
/**
* gst_object_set_name:
* @object: a #GstObject
- * @name: new name of object
+ * @name: (allow-none): new name of object
*
* Sets the name of @object, or gives @object a guaranteed unique
* name (if @name is %NULL).
GST_OBJECT_UNLOCK (object);
result = gst_object_set_name_default (object);
}
- /* FIXME-0.11: this misses a g_object_notify (object, "name"); unless called
- * from gst_object_set_property.
- * Ideally remove such custom setters (or make it static).
- */
+
+ g_object_notify (G_OBJECT (object), "name");
return result;
/* error */
}
/**
- * gst_object_has_ancestor:
+ * gst_object_has_as_parent:
+ * @object: a #GstObject to check
+ * @parent: a #GstObject to check as parent
+ *
+ * Check if @parent is the parent of @object.
+ * E.g. a #GstElement can check if it owns a given #GstPad.
+ *
+ * Returns: %FALSE if either @object or @parent is %NULL. %TRUE if @parent is
+ * the parent of @object. Otherwise %FALSE.
+ *
+ * MT safe. Grabs and releases @object's locks.
+ * Since: 1.6
+ */
+gboolean
+gst_object_has_as_parent (GstObject * object, GstObject * parent)
+{
+ gboolean result = FALSE;
+
+ if (G_LIKELY (GST_IS_OBJECT (object) && GST_IS_OBJECT (parent))) {
+ GST_OBJECT_LOCK (object);
+ result = GST_OBJECT_PARENT (object) == parent;
+ GST_OBJECT_UNLOCK (object);
+ }
+
+ return result;
+}
+
+/**
+ * gst_object_has_as_ancestor:
* @object: a #GstObject to check
* @ancestor: a #GstObject to check as ancestor
*
* MT safe. Grabs and releases @object's locks.
*/
gboolean
-gst_object_has_ancestor (GstObject * object, GstObject * ancestor)
+gst_object_has_as_ancestor (GstObject * object, GstObject * ancestor)
{
GstObject *parent, *tmp;
}
/**
+ * gst_object_has_ancestor:
+ * @object: a #GstObject to check
+ * @ancestor: a #GstObject to check as ancestor
+ *
+ * Check if @object has an ancestor @ancestor somewhere up in
+ * the hierarchy. One can e.g. check if a #GstElement is inside a #GstPipeline.
+ *
+ * Returns: %TRUE if @ancestor is an ancestor of @object.
+ *
+ * Deprecated: Use gst_object_has_as_ancestor() instead.
+ *
+ * MT safe. Grabs and releases @object's locks.
+ */
+/* FIXME 2.0: remove */
+#ifndef GST_REMOVE_DEPRECATED
+#ifdef GST_DISABLE_DEPRECATED
+gboolean gst_object_has_ancestor (GstObject * object, GstObject * ancestor);
+#endif
+gboolean
+gst_object_has_ancestor (GstObject * object, GstObject * ancestor)
+{
+ return gst_object_has_as_ancestor (object, ancestor);
+}
+#endif
+
+/**
* gst_object_check_uniqueness:
* @list: (transfer none) (element-type Gst.Object): a list of #GstObject to
* check through
* gst_object_has_active_control_bindings:
* @object: the object that has controlled properties
*
- * Check if the @object has an active controlled properties.
+ * Check if the @object has active controlled properties.
*
* Returns: %TRUE if the object has active controlled properties
*/
* @binding: the binding
*
* Removes the corresponding #GstControlBinding. If it was the
- * last ref of the binding, it will be disposed.
+ * last ref of the binding, it will be disposed.
*
* Returns: %TRUE if the binding could be removed.
*/
* 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
+ * The values are unboxed and ready to be used. The similar function
* gst_object_get_g_value_array() returns the array as #GValues and is
* better suites for bindings.
*
projects / platform / upstream / gstreamer.git / blobdiff