Ejemplo n.º 1
0
/**
 * gst_controller_get:
 * @self: the controller object which handles the properties
 * @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 controller-handled property at the requested
 * time.
 *
 * Returns: the GValue of the property at the given time, or %NULL if the
 * property isn't handled by the controller
 */
GValue *
gst_controller_get (GstController * self, gchar * property_name,
    GstClockTime timestamp)
{
  GstControlledProperty *prop;
  GValue *val = NULL;

  g_return_val_if_fail (GST_IS_CONTROLLER (self), NULL);
  g_return_val_if_fail (property_name, NULL);
  g_return_val_if_fail (GST_CLOCK_TIME_IS_VALID (timestamp), NULL);

  g_mutex_lock (self->lock);
  if ((prop = gst_controller_find_controlled_property (self, 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 (self->object, prop->name, val);
    }
  }
  g_mutex_unlock (self->lock);

  return val;
}
Ejemplo n.º 2
0
/**
 * gst_controller_get_value_array:
 * @self: the controller that handles the values
 * @timestamp: the time that should be processed
 * @value_array: array to put control-values in
 *
 * Function to be able to get an array of values for one element property.
 *
 * All fields of @value_array must be filled correctly. Especially the
 * @value_array->values array must be big enough to keep the requested amount
 * of values.
 *
 * The type of the values in the array is the same as the property's type.
 *
 * <note><para>This doesn't modify the controlled GObject property!</para></note>
 *
 * Returns: %TRUE if the given array could be filled, %FALSE otherwise
 */
gboolean
gst_controller_get_value_array (GstController * self, GstClockTime timestamp,
    GstValueArray * value_array)
{
  gboolean res = FALSE;
  GstControlledProperty *prop;

  g_return_val_if_fail (GST_IS_CONTROLLER (self), 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_mutex_lock (self->lock);

  if ((prop =
          gst_controller_find_controlled_property (self,
              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);
  }

out:
  g_mutex_unlock (self->lock);
  return res;
}
Ejemplo n.º 3
0
/**
 * gst_controller_set_control_source:
 * @self: 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
 *
 * Sets the #GstControlSource for @property_name. If there already was a #GstControlSource
 * for this property it will be unreferenced.
 *
 * 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.
 *
 * Since: 0.10.14
 */
gboolean
gst_controller_set_control_source (GstController * self, gchar * property_name,
    GstControlSource * csource)
{
  GstControlledProperty *prop;
  gboolean ret = FALSE;

  g_mutex_lock (self->lock);
  if ((prop = gst_controller_find_controlled_property (self, property_name))) {
    GstControlSource *old = prop->csource;

    if (csource && (ret = gst_control_source_bind (csource, prop->pspec))) {
      g_object_ref (csource);
      prop->csource = csource;
    } else if (!csource) {
      ret = TRUE;
      prop->csource = NULL;
    }

    if (ret && old)
      g_object_unref (old);
  }
  g_mutex_unlock (self->lock);

  return ret;
}
Ejemplo n.º 4
0
/**
 * gst_controller_remove_properties_list:
 * @self: the controller object from which some properties should be removed
 * @list: #GList of property names that should be removed
 *
 * Removes the given object properties from the controller
 *
 * Returns: %FALSE if one of the given property isn't handled by the controller, %TRUE otherwise
 */
gboolean
gst_controller_remove_properties_list (GstController * self, GList * list)
{
  gboolean res = TRUE;
  GstControlledProperty *prop;
  gchar *name;
  GList *tmp;

  g_return_val_if_fail (GST_IS_CONTROLLER (self), FALSE);

  for (tmp = list; tmp; tmp = g_list_next (tmp)) {
    name = (gchar *) tmp->data;

    /* find the property in the properties list of the controller, remove and free it */
    g_mutex_lock (self->lock);
    if ((prop = gst_controller_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);
    } else {
      res = FALSE;
    }
    g_mutex_unlock (self->lock);
  }

  return res;
}
Ejemplo n.º 5
0
gboolean
gst_controller_unset (GstController * self, gchar * property_name,
    GstClockTime timestamp)
{
  gboolean res = FALSE;
  GstControlledProperty *prop;

  g_return_val_if_fail (GST_IS_CONTROLLER (self), FALSE);
  g_return_val_if_fail (property_name, FALSE);
  g_return_val_if_fail (GST_CLOCK_TIME_IS_VALID (timestamp), FALSE);

  g_mutex_lock (self->lock);
  if ((prop = gst_controller_find_controlled_property (self, property_name))) {
    if (!prop->csource || !GST_IS_INTERPOLATION_CONTROL_SOURCE (prop->csource))
      goto out;

    res =
        gst_interpolation_control_source_unset (GST_INTERPOLATION_CONTROL_SOURCE
        (prop->csource), timestamp);
  }

out:
  g_mutex_unlock (self->lock);

  return res;
}
Ejemplo n.º 6
0
gboolean
gst_controller_set_from_list (GstController * self, gchar * property_name,
    GSList * timedvalues)
{
  gboolean res = FALSE;
  GstControlledProperty *prop;

  g_return_val_if_fail (GST_IS_CONTROLLER (self), FALSE);
  g_return_val_if_fail (property_name, FALSE);

  g_mutex_lock (self->lock);
  if ((prop = gst_controller_find_controlled_property (self, property_name))) {
    /* FIXME: backward compat, add GstInterpolationControlSource */
    if (!prop->csource)
      gst_controlled_property_add_interpolation_control_source (prop);

    if (!GST_IS_INTERPOLATION_CONTROL_SOURCE (prop->csource))
      goto out;

    res =
        gst_interpolation_control_source_set_from_list
        (GST_INTERPOLATION_CONTROL_SOURCE (prop->csource), timedvalues);
  }

out:
  g_mutex_unlock (self->lock);

  return res;
}
Ejemplo n.º 7
0
EXPORT_C
#endif

gboolean
gst_controller_remove_properties_valist (GstController * self, va_list var_args)
{
  gboolean res = TRUE;
  GstControlledProperty *prop;
  gchar *name;

  g_return_val_if_fail (GST_IS_CONTROLLER (self), FALSE);

  while ((name = va_arg (var_args, gchar *))) {
    /* find the property in the properties list of the controller, remove and free it */
    g_mutex_lock (self->lock);
    if ((prop = gst_controller_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);
    } else {
      res = FALSE;
    }
    g_mutex_unlock (self->lock);
  }

  return res;
}
Ejemplo n.º 8
0
EXPORT_C
#endif
const GList *
gst_controller_get_all (GstController * self, gchar * property_name)
{
  const GList *res = NULL;
  GstControlledProperty *prop;

  g_return_val_if_fail (GST_IS_CONTROLLER (self), NULL);
  g_return_val_if_fail (property_name, NULL);

  g_mutex_lock (self->lock);
  if ((prop = gst_controller_find_controlled_property (self, property_name))) {
    if (!prop->csource || !GST_IS_INTERPOLATION_CONTROL_SOURCE (prop->csource))
      goto out;

    res =
        gst_interpolation_control_source_get_all
        (GST_INTERPOLATION_CONTROL_SOURCE (prop->csource));
  }

out:
  g_mutex_unlock (self->lock);

  return res;
}
Ejemplo n.º 9
0
void
gst_controller_set_property_disabled (GstController * self,
    gchar * property_name, gboolean disabled)
{
  GstControlledProperty *prop;

  g_return_if_fail (GST_IS_CONTROLLER (self));
  g_return_if_fail (property_name);

  g_mutex_lock (self->lock);
  if ((prop = gst_controller_find_controlled_property (self, property_name))) {
    prop->disabled = disabled;
  }
  g_mutex_unlock (self->lock);
}
Ejemplo n.º 10
0
gboolean
gst_controller_set_interpolation_mode (GstController * self,
    gchar * property_name, GstInterpolateMode mode)
{
  gboolean res = FALSE;
  GstControlledProperty *prop;

  g_return_val_if_fail (GST_IS_CONTROLLER (self), FALSE);
  g_return_val_if_fail (property_name, FALSE);

  g_mutex_lock (self->lock);
  if ((prop = gst_controller_find_controlled_property (self, property_name))) {
    res = gst_controlled_property_set_interpolation_mode (prop, mode);
  }
  g_mutex_unlock (self->lock);

  return res;
}
Ejemplo n.º 11
0
/**
 * gst_controller_get_control_source:
 * @self: the controller object
 * @property_name: name of the property for which the #GstControlSource should be get
 *
 * Gets the corresponding #GstControlSource for the property. This should be unreferenced
 * again after use.
 *
 * Returns: the #GstControlSource for @property_name or NULL if the property is not
 * controlled by this controller or no #GstControlSource was assigned yet.
 *
 * Since: 0.10.14
 */
GstControlSource *
gst_controller_get_control_source (GstController * self, gchar * property_name)
{
  GstControlledProperty *prop;
  GstControlSource *ret = NULL;

  g_return_val_if_fail (GST_IS_CONTROLLER (self), NULL);
  g_return_val_if_fail (property_name, NULL);

  g_mutex_lock (self->lock);
  if ((prop = gst_controller_find_controlled_property (self, property_name))) {
    ret = prop->csource;
  }
  g_mutex_unlock (self->lock);

  if (ret)
    g_object_ref (ret);

  return ret;
}
Ejemplo n.º 12
0
gboolean
gst_controller_unset_all (GstController * self, gchar * property_name)
{
  GstControlledProperty *prop;

  g_return_val_if_fail (GST_IS_CONTROLLER (self), FALSE);
  g_return_val_if_fail (property_name, FALSE);

  g_mutex_lock (self->lock);
  if ((prop = gst_controller_find_controlled_property (self, property_name))) {
    if (!prop->csource || !GST_IS_INTERPOLATION_CONTROL_SOURCE (prop->csource))
      goto out;

    gst_interpolation_control_source_unset_all (GST_INTERPOLATION_CONTROL_SOURCE
        (prop->csource));
  }

out:
  g_mutex_unlock (self->lock);

  return TRUE;
}
Ejemplo n.º 13
0
/*
 * gst_controller_add_property:
 * @self: the controller object or %NULL if none yet exists
 * @object: object to bind the property
 * @name: name of projecty in @object
 * @ref_existing: pointer to flag that tracks if we need to ref an existng
 *   controller still
 *
 * Creates a new #GstControlledProperty if there is none for property @name yet.
 * In case this is the first controlled propery, it creates the controller as
 * well.
 *
 * Returns: a newly created controller object or reffed existing one with the
 * given property bound.
 */
static GstController *
gst_controller_add_property (GstController * self, GObject * object,
    gchar * name, gboolean * ref_existing)
{
  /* test if this property isn't yet controlled */
  if (!self || !gst_controller_find_controlled_property (self, name)) {
    GstControlledProperty *prop;

    /* create GstControlledProperty and add to self->propeties List */
    if ((prop = gst_controlled_property_new (object, name))) {
      /* if we don't have a controller object yet, now is the time to create one */
      if (!self) {
        self = g_object_newv (GST_TYPE_CONTROLLER, 0, NULL);
        self->object = g_object_ref (object);
        /* store the controller */
        g_object_set_qdata (object, priv_gst_controller_key, self);
        *ref_existing = FALSE;
      } else {
        /* only want one single _ref(), even for multiple properties */
        if (*ref_existing) {
          g_object_ref (self);
          *ref_existing = FALSE;
          GST_INFO ("returning existing controller");
        }
      }
      self->properties = g_list_prepend (self->properties, prop);
    }
  } else {
    GST_WARNING ("trying to control property %s again", name);
    if (*ref_existing) {
      g_object_ref (self);
      *ref_existing = FALSE;
    }
  }
  return self;
}