C++ (Cpp) ges_track_object_get_gnlobject Examples

Example #1

File: ges-track-video-transition.c Project: palango/gst-editing-services

static void
ges_track_video_transition_duration_changed (GESTrackObject * object,
    guint64 duration)
{
  GstElement *gnlobj = ges_track_object_get_gnlobject (object);
  GESTrackVideoTransition *self = GES_TRACK_VIDEO_TRANSITION (object);
  GESTrackVideoTransitionPrivate *priv = self->priv;
  GstTimedValueControlSource *ts;

  GST_LOG ("updating controller");

  if (G_UNLIKELY (!gnlobj || !priv->control_source))
    return;

  ts = GST_TIMED_VALUE_CONTROL_SOURCE (priv->control_source);

  GST_INFO ("duration: %" G_GUINT64_FORMAT, duration);
  GST_LOG ("setting values on controller");

  gst_timed_value_control_source_unset_all (ts);
  gst_timed_value_control_source_set (ts, 0, priv->start_value);
  gst_timed_value_control_source_set (ts, duration, priv->end_value);

  priv->dur = duration;
  GST_LOG ("done updating controller");
}

Example #2

File: ges-track.c Project: freesteph/gst-editing-services

/**
 * ges_track_remove_object:
 * @track: a #GESTrack
 * @object: the #GESTrackObject to remove
 *
 * Removes the object from the track and unparents it.
 * Unparenting it means the reference owned by @track on the @object will be
 * removed. If you wish to use the @object after this function, make sure you
 * call g_object_ref() before removing it from the @track.
 *
 * Returns: #TRUE if the object was removed, else #FALSE if the track
 * could not remove the object (like if it didn't belong to the track).
 */
gboolean
ges_track_remove_object (GESTrack * track, GESTrackObject * object)
{
  GESTrackPrivate *priv;
  GstElement *gnlobject;

  g_return_val_if_fail (GES_IS_TRACK (track), FALSE);
  g_return_val_if_fail (GES_IS_TRACK_OBJECT (object), FALSE);

  GST_DEBUG ("track:%p, object:%p", track, object);

  priv = track->priv;

  if (G_UNLIKELY (ges_track_object_get_track (object) != track)) {
    GST_WARNING ("Object belongs to another track");
    return FALSE;
  }

  if ((gnlobject = ges_track_object_get_gnlobject (object))) {
    GST_DEBUG ("Removing GnlObject '%s' from composition '%s'",
        GST_ELEMENT_NAME (gnlobject), GST_ELEMENT_NAME (priv->composition));
    if (!gst_bin_remove (GST_BIN (priv->composition), gnlobject)) {
      GST_WARNING ("Failed to remove gnlobject from composition");
      return FALSE;
    }
  }

  ges_track_object_set_track (object, NULL);
  priv->trackobjects = g_list_remove (priv->trackobjects, object);

  g_object_unref (object);

  return TRUE;
}

Example #3

File: ges-track-video-transition.c Project: luisbg/gst-editing-services

static void
ges_track_video_transition_duration_changed (GESTrackObject * object,
    guint64 duration)
{
  GValue start_value = { 0, };
  GValue end_value = { 0, };
  GstElement *gnlobj = ges_track_object_get_gnlobject (object);
  GESTrackVideoTransition *self = GES_TRACK_VIDEO_TRANSITION (object);
  GESTrackVideoTransitionPrivate *priv = self->priv;

  GST_LOG ("updating controller");

  if (G_UNLIKELY (!gnlobj || !priv->control_source))
    return;

  GST_INFO ("duration: %" G_GUINT64_FORMAT, duration);
  g_value_init (&start_value, G_TYPE_DOUBLE);
  g_value_init (&end_value, G_TYPE_DOUBLE);
  g_value_set_double (&start_value, priv->start_value);
  g_value_set_double (&end_value, priv->end_value);

  GST_LOG ("setting values on controller");

  gst_interpolation_control_source_unset_all (priv->control_source);
  gst_interpolation_control_source_set (priv->control_source, 0, &start_value);
  gst_interpolation_control_source_set (priv->control_source,
      duration, &end_value);

  GST_LOG ("done updating controller");
}

Example #4

File: ges-track.c Project: freesteph/gst-editing-services

/**
 * ges_track_add_object:
 * @track: a #GESTrack
 * @object: (transfer full): the #GESTrackObject to add
 *
 * Adds the given object to the track. Sets the object's controlling track,
 * and thus takes ownership of the @object.
 *
 * An object can only be added to one track.
 *
 * Returns: #TRUE if the object was properly added. #FALSE if the track does not
 * want to accept the object.
 */
gboolean
ges_track_add_object (GESTrack * track, GESTrackObject * object)
{
  g_return_val_if_fail (GES_IS_TRACK (track), FALSE);
  g_return_val_if_fail (GES_IS_TRACK_OBJECT (object), FALSE);

  GST_DEBUG ("track:%p, object:%p", track, object);

  if (G_UNLIKELY (ges_track_object_get_track (object) != NULL)) {
    GST_WARNING ("Object already belongs to another track");
    return FALSE;
  }

  /* At this point, the track object shouldn't have any gnlobject since
   * it hasn't been added to a track yet.
   * FIXME : This check seems a bit obsolete */
  if (G_UNLIKELY (ges_track_object_get_gnlobject (object) != NULL)) {
    GST_ERROR ("TrackObject already controls a gnlobject !");
    return FALSE;
  }

  if (G_UNLIKELY (!ges_track_object_set_track (object, track))) {
    GST_ERROR ("Couldn't properly add the object to the Track");
    return FALSE;
  }

  GST_DEBUG ("Adding object to ourself");

  if (G_UNLIKELY (!gst_bin_add (GST_BIN (track->priv->composition),
              ges_track_object_get_gnlobject (object)))) {
    GST_WARNING ("Couldn't add object to the GnlComposition");
    return FALSE;
  }

  g_object_ref_sink (object);

  track->priv->trackobjects = g_list_append (track->priv->trackobjects, object);

  return TRUE;
}