* <listitem><para>
* create a #GstControlSource.
* csource = gst_interpolation_control_source_new ();
- * gst_interpolation_control_source_set_interpolation_mode(csource, mode);
+ * g_object_set (csource, "mode", GST_INTERPOLATION_MODE_LINEAR, NULL);
* </para></listitem>
* <listitem><para>
* Attach the #GstControlSource on the controller to a property.
- * gst_object_set_control_source (object, "prop1", csource);
+ * gst_object_add_control_binding (object, gst_control_binding_direct_new (objetct, "prop1", csource));
* </para></listitem>
* <listitem><para>
* Set the control values
- * gst_interpolation_control_source_set (csource,0 * GST_SECOND, value1);
- * gst_interpolation_control_source_set (csource,1 * GST_SECOND, value2);
+ * 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
#include "gstobject.h"
#include "gstmarshal.h"
#include "gstclock.h"
+#include "gstcontrolbinding.h"
#include "gstcontrolsource.h"
#include "gstinfo.h"
#include "gstparamspecs.h"
static GParamSpec *properties[PROP_LAST];
-/*
- * GstControlledProperty:
- */
-typedef struct _GstControlledProperty
-{
- GParamSpec *pspec; /* GParamSpec for this property */
- const gchar *name; /* name of the property */
- GstControlSource *csource; /* GstControlSource for this property */
- gboolean disabled;
- GValue last_value;
-} GstControlledProperty;
-
-static void gst_controlled_property_free (GstControlledProperty * prop);
-
-
G_DEFINE_ABSTRACT_TYPE (GstObject, gst_object, G_TYPE_INITIALLY_UNOWNED);
static void
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
#ifndef GST_DISABLE_TRACE
- _gst_object_trace = gst_alloc_trace_register (g_type_name (GST_TYPE_OBJECT));
+ _gst_object_trace =
+ _gst_alloc_trace_register (g_type_name (GST_TYPE_OBJECT), 0);
#endif
gobject_class->set_property = gst_object_set_property;
properties[PROP_NAME] =
g_param_spec_string ("name", "Name", "The name of the object", NULL,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS);
- g_object_class_install_property (gobject_class, PROP_NAME,
- properties[PROP_NAME]);
properties[PROP_PARENT] =
g_param_spec_object ("parent", "Parent", "The parent of the object",
GST_TYPE_OBJECT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS);
- g_object_class_install_property (gobject_class, PROP_PARENT,
- properties[PROP_PARENT]);
+
+ g_object_class_install_properties (gobject_class, PROP_LAST, properties);
/**
* GstObject::deep-notify:
static void
gst_object_init (GstObject * object)
{
- object->lock = g_mutex_new ();
+ g_mutex_init (&object->lock);
object->parent = NULL;
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);
+ _gst_alloc_trace_new (_gst_object_trace, object);
#endif
object->flags = 0;
GST_OBJECT_PARENT (object) = NULL;
GST_OBJECT_UNLOCK (object);
- if (self->properties) {
+ if (self->control_bindings) {
GList *node;
- for (node = self->properties; node; node = g_list_next (node)) {
- gst_controlled_property_free ((GstControlledProperty *) node->data);
+ for (node = self->control_bindings; node; node = g_list_next (node)) {
+ g_object_unref (node->data);
}
- g_list_free (self->properties);
- self->properties = NULL;
+ g_list_free (self->control_bindings);
+ self->control_bindings = NULL;
}
((GObjectClass *) gst_object_parent_class)->dispose (object);
g_signal_handlers_destroy (object);
g_free (gstobject->name);
- g_mutex_free (gstobject->lock);
+ g_mutex_clear (&gstobject->lock);
#ifndef GST_DISABLE_TRACE
- gst_alloc_trace_free (_gst_object_trace, object);
+ _gst_alloc_trace_free (_gst_object_trace, object);
#endif
((GObjectClass *) gst_object_parent_class)->finalize (object);
goto had_parent;
object->parent = parent;
- g_object_ref_sink (object);
+ gst_object_ref_sink (object);
GST_OBJECT_UNLOCK (object);
/* FIXME, this does not work, the deep notify takes the lock from the parent
/* controller helper functions */
/*
- * gst_controlled_property_new:
- * @object: for which object the controlled property should be set up
- * @name: the name of the property to be controlled
- *
- * Private method which initializes the fields of a new controlled property
- * structure.
- *
- * Returns: a freshly allocated structure or %NULL
- */
-static GstControlledProperty *
-gst_controlled_property_new (GstObject * object, const gchar * name)
-{
- GstControlledProperty *prop = NULL;
- GParamSpec *pspec;
-
- GST_INFO ("trying to put property '%s' under control", name);
-
- /* check if the object has a property of that name */
- if ((pspec =
- g_object_class_find_property (G_OBJECT_GET_CLASS (object), name))) {
- GST_DEBUG (" psec->flags : 0x%08x", pspec->flags);
-
- /* check if this param is witable && controlable && !construct-only */
- g_return_val_if_fail ((pspec->flags & (G_PARAM_WRITABLE |
- GST_PARAM_CONTROLLABLE | G_PARAM_CONSTRUCT_ONLY)) ==
- (G_PARAM_WRITABLE | GST_PARAM_CONTROLLABLE), NULL);
-
- if ((prop = g_slice_new (GstControlledProperty))) {
- prop->pspec = pspec;
- prop->name = pspec->name;
- prop->csource = NULL;
- prop->disabled = FALSE;
- memset (&prop->last_value, 0, sizeof (GValue));
- g_value_init (&prop->last_value, G_PARAM_SPEC_VALUE_TYPE (prop->pspec));
- }
- } else {
- GST_WARNING ("class '%s' has no property '%s'", G_OBJECT_TYPE_NAME (object),
- name);
- }
- return prop;
-}
-
-/*
- * gst_controlled_property_free:
- * @prop: the object to free
- *
- * Private method which frees all data allocated by a #GstControlledProperty
- * instance.
- */
-static void
-gst_controlled_property_free (GstControlledProperty * prop)
-{
- if (prop->csource)
- g_object_unref (prop->csource);
- g_value_unset (&prop->last_value);
- g_slice_free (GstControlledProperty, prop);
-}
-
-/*
- * gst_object_find_controlled_property:
+ * gst_object_find_control_binding:
* @self: the gobject to search for a property in
* @name: the gobject property name to look for
*
* Searches the list of properties under control.
*
- * Returns: a #GstControlledProperty or %NULL if the property is not being
+ * Returns: a #GstControlBinding or %NULL if the property is not being
* controlled.
*/
-static GstControlledProperty *
-gst_object_find_controlled_property (GstObject * self, const gchar * name)
+static GstControlBinding *
+gst_object_find_control_binding (GstObject * self, const gchar * name)
{
- GstControlledProperty *prop;
+ GstControlBinding *binding;
GList *node;
- for (node = self->properties; node; node = g_list_next (node)) {
- prop = node->data;
+ for (node = self->control_bindings; node; node = g_list_next (node)) {
+ binding = node->data;
/* FIXME: eventually use GQuark to speed it up */
- if (!strcmp (prop->name, name)) {
- return prop;
+ if (!strcmp (binding->name, name)) {
+ GST_DEBUG_OBJECT (self, "found control binding for property '%s'", name);
+ return binding;
}
}
- GST_DEBUG ("controller does not (yet) manage property '%s'", name);
+ GST_DEBUG_OBJECT (self, "controller does not manage property '%s'", name);
return NULL;
}
-/*
- * gst_object_add_controlled_property:
- * @self: the object
- * @name: name of projecty in @object
- *
- * Creates a new #GstControlledProperty if there is none for property @name yet.
- *
- * Returns: %TRUE if the property has been added to the controller
- */
-static gboolean
-gst_object_add_controlled_property (GstObject * self, const gchar * name)
-{
- gboolean res = TRUE;
-
- /* test if this property isn't yet controlled */
- if (!gst_object_find_controlled_property (self, name)) {
- GstControlledProperty *prop;
-
- /* create GstControlledProperty and add to self->properties list */
- if ((prop = gst_controlled_property_new (self, name))) {
- self->properties = g_list_prepend (self->properties, prop);
- GST_DEBUG_OBJECT (self, "property %s added", name);
- } else
- res = FALSE;
- } else {
- GST_WARNING_OBJECT (self, "trying to control property %s again", name);
- }
- return res;
-}
-
-/*
- * gst_object_remove_controlled_property:
- * @self: the object
- * @name: name of projecty in @object
- *
- * Removes a #GstControlledProperty for property @name.
- *
- * Returns: %TRUE if the property has been removed from the controller
- */
-static gboolean
-gst_object_remove_controlled_property (GstObject * self, const gchar * name)
-{
- gboolean res = TRUE;
- GstControlledProperty *prop;
-
- if ((prop = gst_object_find_controlled_property (self, name))) {
- self->properties = g_list_remove (self->properties, prop);
- //g_signal_handler_disconnect (self->object, prop->notify_handler_id);
- gst_controlled_property_free (prop);
- GST_DEBUG_OBJECT (self, "property %s removed", name);
- } else {
- res = FALSE;
- }
- return res;
-}
-
/* controller functions */
/**
- * gst_object_control_properties:
- * @object: the object of which some properties should be controlled
- * @...: %NULL terminated list of property names that should be controlled
- *
- * Creates a GstController that allows you to dynamically control one, or more,
- * GObject properties. If the given GstObject already has a GstController,
- * it adds the given properties to the existing
- * controller and returns that controller.
- *
- * Returns: %TRUE if the properties have been made controllable.
- */
-gboolean
-gst_object_control_properties (GstObject * object, ...)
-{
- gboolean res = TRUE;
- va_list var_args;
- gchar *name;
-
- g_return_val_if_fail (GST_IS_OBJECT (object), FALSE);
-
- va_start (var_args, object);
- GST_OBJECT_LOCK (object);
- while ((name = va_arg (var_args, gchar *))) {
- res &= gst_object_add_controlled_property (object, name);
- }
- GST_OBJECT_UNLOCK (object);
- va_end (var_args);
- return res;
-}
-
-/**
- * gst_object_uncontrol_properties:
- * @object: the object of which some properties should not be controlled anymore
- * @...: %NULL terminated list of property names that should be controlled
- *
- * Removes the given element's properties from it's controller
- *
- * Returns: %FALSE if one of the given property names isn't handled by the
- * controller, %TRUE otherwise
- */
-gboolean
-gst_object_uncontrol_properties (GstObject * object, ...)
-{
- gboolean res = TRUE;
- va_list var_args;
- gchar *name;
-
- g_return_val_if_fail (GST_IS_OBJECT (object), FALSE);
-
- va_start (var_args, object);
- GST_OBJECT_LOCK (object);
- while ((name = va_arg (var_args, gchar *))) {
- res &= gst_object_remove_controlled_property (object, name);
- }
- GST_OBJECT_UNLOCK (object);
- va_end (var_args);
- return (res);
-}
-
-/**
* gst_object_suggest_next_sync:
* @object: the object that has controlled properties
*
gboolean
gst_object_sync_values (GstObject * object, GstClockTime timestamp)
{
- GstControlledProperty *prop;
GList *node;
- gboolean ret = TRUE, val_ret;
- GValue value = { 0, };
+ gboolean ret = TRUE;
g_return_val_if_fail (GST_IS_OBJECT (object), FALSE);
g_return_val_if_fail (GST_CLOCK_TIME_IS_VALID (timestamp), FALSE);
- GST_LOG ("sync_values");
+ GST_LOG_OBJECT (object, "sync_values");
+ if (!object->control_bindings)
+ return TRUE;
/* FIXME: this deadlocks */
/* GST_OBJECT_LOCK (object); */
g_object_freeze_notify ((GObject *) object);
- /* go over the controlled properties of the controller */
- for (node = object->properties; node; node = g_list_next (node)) {
- prop = node->data;
-
- if (!prop->csource || prop->disabled)
- continue;
-
- GST_LOG ("property '%s' at ts=%" G_GUINT64_FORMAT, prop->name, timestamp);
-
- /* we can make this faster
- * http://bugzilla.gnome.org/show_bug.cgi?id=536939
- */
- g_value_init (&value, G_PARAM_SPEC_VALUE_TYPE (prop->pspec));
- val_ret = gst_control_source_get_value (prop->csource, timestamp, &value);
- if (G_LIKELY (val_ret)) {
- /* always set the value for first time, but then only if it changed
- * this should limit g_object_notify invocations.
- * FIXME: can we detect negative playback rates?
- */
- if ((timestamp < object->last_sync) ||
- gst_value_compare (&value, &prop->last_value) != GST_VALUE_EQUAL) {
- g_object_set_property ((GObject *) object, prop->name, &value);
- g_value_copy (&value, &prop->last_value);
- }
- } else {
- GST_DEBUG ("no control value for param %s", prop->name);
- }
- g_value_unset (&value);
- ret &= val_ret;
+ for (node = object->control_bindings; node; node = g_list_next (node)) {
+ ret &= gst_control_binding_sync_values ((GstControlBinding *) node->data,
+ object, timestamp, object->last_sync);
}
object->last_sync = timestamp;
g_object_thaw_notify ((GObject *) object);
return ret;
}
+
/**
- * gst_object_has_active_controlled_properties:
+ * gst_object_has_active_control_bindings:
* @object: the object that has controlled properties
*
* Check if the @object has an active controlled properties.
* Returns: %TRUE if the object has active controlled properties
*/
gboolean
-gst_object_has_active_controlled_properties (GstObject * object)
+gst_object_has_active_control_bindings (GstObject * object)
{
gboolean res = FALSE;
GList *node;
- GstControlledProperty *prop;
g_return_val_if_fail (GST_IS_OBJECT (object), FALSE);
GST_OBJECT_LOCK (object);
- for (node = object->properties; node; node = node->next) {
- prop = node->data;
- res |= !prop->disabled;
+ for (node = object->control_bindings; node; node = g_list_next (node)) {
+ res |= !gst_control_binding_is_disabled ((GstControlBinding *) node->data);
}
GST_OBJECT_UNLOCK (object);
return res;
}
/**
- * gst_object_set_controlled_properties_disabled:
+ * gst_object_set_control_bindings_disabled:
* @object: the object that has controlled properties
* @disabled: boolean that specifies whether to disable the controller
* or not.
*
* This function is used to disable all controlled properties of the @object for
- * some time, i.e. gst_object_sync_values() will do nothing..
+ * some time, i.e. gst_object_sync_values() will do nothing.
*/
void
-gst_object_set_controlled_properties_disabled (GstObject * object,
- gboolean disabled)
+gst_object_set_control_bindings_disabled (GstObject * object, gboolean disabled)
{
GList *node;
- GstControlledProperty *prop;
g_return_if_fail (GST_IS_OBJECT (object));
GST_OBJECT_LOCK (object);
- for (node = object->properties; node; node = node->next) {
- prop = node->data;
- prop->disabled = disabled;
+ for (node = object->control_bindings; node; node = g_list_next (node)) {
+ gst_control_binding_set_disabled ((GstControlBinding *) node->data,
+ disabled);
}
GST_OBJECT_UNLOCK (object);
}
/**
- * gst_object_set_controlled_property_disabled:
+ * gst_object_set_control_binding_disabled:
* @object: the object that has controlled properties
* @property_name: property to disable
* @disabled: boolean that specifies whether to disable the controller
* property.
*/
void
-gst_object_set_controlled_property_disabled (GstObject * object,
+gst_object_set_control_binding_disabled (GstObject * object,
const gchar * property_name, gboolean disabled)
{
- GstControlledProperty *prop;
+ GstControlBinding *binding;
g_return_if_fail (GST_IS_OBJECT (object));
g_return_if_fail (property_name);
GST_OBJECT_LOCK (object);
- if ((prop = gst_object_find_controlled_property (object, property_name))) {
- prop->disabled = disabled;
+ if ((binding = gst_object_find_control_binding (object, property_name))) {
+ gst_control_binding_set_disabled (binding, disabled);
}
GST_OBJECT_UNLOCK (object);
}
+
/**
- * gst_object_set_control_source:
+ * gst_object_add_control_binding:
* @object: the controller object
- * @property_name: name of the property for which the #GstControlSource should be set
- * @csource: the #GstControlSource that should be used for the property
+ * @binding: (transfer full): the #GstControlBinding that should be used
*
- * Sets the #GstControlSource for @property_name. If there already was a #GstControlSource
- * for this property it will be unreferenced.
+ * Sets the #GstControlBinding. If there already was a #GstControlBinding
+ * for this property it will be replaced.
+ * The @object will take ownership of the @binding.
*
- * Returns: %FALSE if the given property isn't handled by the controller or the new #GstControlSource
- * couldn't be bound to the property, %TRUE if everything worked as expected.
+ * Returns: %FALSE if the given @binding has not been setup for this object or
+ * %TRUE otherwise.
*/
gboolean
-gst_object_set_control_source (GstObject * object, const gchar * property_name,
- GstControlSource * csource)
+gst_object_add_control_binding (GstObject * object, GstControlBinding * binding)
{
- GstControlledProperty *prop;
- gboolean ret = FALSE;
+ GstControlBinding *old;
g_return_val_if_fail (GST_IS_OBJECT (object), FALSE);
- g_return_val_if_fail (property_name, FALSE);
- g_return_val_if_fail ((!csource || GST_IS_CONTROL_SOURCE (csource)), FALSE);
+ g_return_val_if_fail (GST_IS_CONTROL_BINDING (binding), FALSE);
+ //g_return_val_if_fail (g_type_is_a (binding->pspec->owner_type,
+ // G_OBJECT_TYPE (object)), FALSE);
GST_OBJECT_LOCK (object);
- if ((prop = gst_object_find_controlled_property (object, property_name))) {
- GstControlSource *old = prop->csource;
-
- if (csource && (ret = gst_control_source_bind (csource, prop->pspec))) {
- prop->csource = g_object_ref (csource);
- } else if (!csource) {
- ret = TRUE;
- prop->csource = NULL;
- }
-
- if (ret && old)
- g_object_unref (old);
+ if ((old = gst_object_find_control_binding (object, binding->name))) {
+ GST_DEBUG_OBJECT (object, "controlled property %s removed", old->name);
+ object->control_bindings = g_list_remove (object->control_bindings, old);
+ gst_object_unparent (GST_OBJECT_CAST (old));
}
+ object->control_bindings = g_list_prepend (object->control_bindings, binding);
+ gst_object_set_parent (GST_OBJECT_CAST (binding), object);
+ GST_DEBUG_OBJECT (object, "controlled property %s added", binding->name);
GST_OBJECT_UNLOCK (object);
- return ret;
+ return TRUE;
}
/**
- * gst_object_get_control_source:
+ * gst_object_get_control_binding:
* @object: the object
- * @property_name: name of the property for which the #GstControlSource should be get
+ * @property_name: name of the property
*
- * Gets the corresponding #GstControlSource for the property. This should be unreferenced
- * again after use.
+ * Gets the corresponding #GstControlBinding for the property. This should be
+ * unreferenced again after use.
*
- * Returns: (transfer full): the #GstControlSource for @property_name or NULL if
- * the property is not controlled by this controller or no #GstControlSource was
- * assigned yet.
+ * Returns: (transfer full): the #GstControlBinding for @property_name or %NULL if
+ * the property is not controlled.
*/
-GstControlSource *
-gst_object_get_control_source (GstObject * object, const gchar * property_name)
+GstControlBinding *
+gst_object_get_control_binding (GstObject * object, const gchar * property_name)
{
- GstControlledProperty *prop;
- GstControlSource *ret = NULL;
+ GstControlBinding *binding;
g_return_val_if_fail (GST_IS_OBJECT (object), NULL);
g_return_val_if_fail (property_name, NULL);
GST_OBJECT_LOCK (object);
- if ((prop = gst_object_find_controlled_property (object, property_name))) {
- if ((ret = prop->csource))
- g_object_ref (ret);
+ if ((binding = gst_object_find_control_binding (object, property_name))) {
+ g_object_ref (binding);
+ }
+ GST_OBJECT_UNLOCK (object);
+
+ return binding;
+}
+
+/**
+ * gst_object_remove_control_binding:
+ * @object: the object
+ * @binding: the binding
+ *
+ * Removes the corresponding #GstControlBinding. If it was the
+ * last ref of the binding, it will be disposed.
+ *
+ * Returns: %TRUE if the binding could be removed.
+ */
+gboolean
+gst_object_remove_control_binding (GstObject * object,
+ GstControlBinding * binding)
+{
+ GList *node;
+ gboolean ret = FALSE;
+
+ g_return_val_if_fail (GST_IS_OBJECT (object), FALSE);
+ g_return_val_if_fail (GST_IS_CONTROL_BINDING (binding), FALSE);
+
+ GST_OBJECT_LOCK (object);
+ if ((node = g_list_find (object->control_bindings, binding))) {
+ GST_DEBUG_OBJECT (object, "controlled property %s removed", binding->name);
+ object->control_bindings =
+ g_list_delete_link (object->control_bindings, node);
+ gst_object_unparent (GST_OBJECT_CAST (binding));
+ ret = TRUE;
}
GST_OBJECT_UNLOCK (object);
* @property_name: the name of the property to get
* @timestamp: the time the control-change should be read from
*
- * Gets the value for the given controllered property at the requested time.
+ * Gets the value for the given controlled property at the requested time.
*
* Returns: the GValue of the property at the given time, or %NULL if the
* property isn't controlled.
gst_object_get_value (GstObject * object, const gchar * property_name,
GstClockTime timestamp)
{
- GstControlledProperty *prop;
+ GstControlBinding *binding;
GValue *val = NULL;
g_return_val_if_fail (GST_IS_OBJECT (object), NULL);
g_return_val_if_fail (GST_CLOCK_TIME_IS_VALID (timestamp), NULL);
GST_OBJECT_LOCK (object);
- if ((prop = gst_object_find_controlled_property (object, property_name))) {
- val = g_new0 (GValue, 1);
- g_value_init (val, G_PARAM_SPEC_VALUE_TYPE (prop->pspec));
- if (prop->csource) {
- gboolean res;
-
- /* get current value via control source */
- res = gst_control_source_get_value (prop->csource, timestamp, val);
- if (!res) {
- g_free (val);
- val = NULL;
- }
- } else {
- g_object_get_property ((GObject *) object, prop->name, val);
- }
+ if ((binding = gst_object_find_control_binding (object, property_name))) {
+ val = gst_control_binding_get_value (binding, timestamp);
}
GST_OBJECT_UNLOCK (object);
}
/**
- * gst_object_get_value_arrays:
- * @object: the object that has controlled properties
- * @timestamp: the time that should be processed
- * @value_arrays: list to return the control-values in
- *
- * Function to be able to get an array of values for one or more given element
- * properties.
- *
- * If the GstValueArray->values array in list nodes is NULL, it will be created
- * by the function.
- * The type of the values in the array are the same as the property's type.
- *
- * The g_object_* functions are just convenience functions for GObject
- *
- * Returns: %TRUE if the given array(s) could be filled, %FALSE otherwise
- */
-gboolean
-gst_object_get_value_arrays (GstObject * object, GstClockTime timestamp,
- GSList * value_arrays)
-{
- gboolean res = TRUE;
- GSList *node;
-
- g_return_val_if_fail (GST_IS_OBJECT (object), FALSE);
- g_return_val_if_fail (GST_CLOCK_TIME_IS_VALID (timestamp), FALSE);
- g_return_val_if_fail (value_arrays, FALSE);
-
- for (node = value_arrays; (res && node); node = g_slist_next (node)) {
- res = gst_object_get_value_array (object, timestamp, node->data);
- }
- return res;
-}
-
-/**
* gst_object_get_value_array:
* @object: the object that has controlled properties
+ * @property_name: the name of the property to get
* @timestamp: the time that should be processed
- * @value_array: array to put control-values in
+ * @interval: the time spacing between subsequent values
+ * @n_values: the number of values
+ * @values: array to put control-values in
*
- * Function to be able to get an array of values for one element properties
+ * Gets a number of values for the given controllered 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.
*
- * If the GstValueArray->values array is NULL, it will be created by the function.
- * The type of the values in the array are the same as the 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 g_object_* functions are just convenience functions for GObject
- *
- * Returns: %TRUE if the given array(s) could be filled, %FALSE otherwise
+ * Returns: %TRUE if the given array could be filled, %FALSE otherwise
*/
gboolean
-gst_object_get_value_array (GstObject * object, GstClockTime timestamp,
- GstValueArray * value_array)
+gst_object_get_value_array (GstObject * object, const gchar * property_name,
+ GstClockTime timestamp, GstClockTime interval, guint n_values,
+ GValue * values)
{
gboolean res = FALSE;
- GstControlledProperty *prop;
+ GstControlBinding *binding;
g_return_val_if_fail (GST_IS_OBJECT (object), FALSE);
+ g_return_val_if_fail (property_name, FALSE);
g_return_val_if_fail (GST_CLOCK_TIME_IS_VALID (timestamp), FALSE);
- g_return_val_if_fail (value_array, FALSE);
- g_return_val_if_fail (value_array->property_name, FALSE);
- g_return_val_if_fail (value_array->values, FALSE);
+ g_return_val_if_fail (GST_CLOCK_TIME_IS_VALID (interval), FALSE);
+ g_return_val_if_fail (values, FALSE);
GST_OBJECT_LOCK (object);
-
- if ((prop = gst_object_find_controlled_property (object,
- value_array->property_name))) {
- /* get current value_array via control source */
- if (!prop->csource)
- goto out;
-
- res = gst_control_source_get_value_array (prop->csource, timestamp,
- value_array);
+ if ((binding = gst_object_find_control_binding (object, property_name))) {
+ res = gst_control_binding_get_value_array (binding, timestamp, interval,
+ n_values, values);
}
-
-out:
GST_OBJECT_UNLOCK (object);
return res;
}
+
/**
* gst_object_get_control_rate:
* @object: the object that has controlled properties
projects / platform / upstream / gstreamer.git / blobdiff