C++ (Cpp) _connect_mixer_element Examples

Example #1

File: gstglmixerbin.c Project: thiblahute/gst-plugins-base

static GstStateChangeReturn
gst_gl_mixer_bin_change_state (GstElement * element, GstStateChange transition)
{
  GstGLMixerBin *self = GST_GL_MIXER_BIN (element);
  GstGLMixerBinClass *klass = GST_GL_MIXER_BIN_GET_CLASS (self);
  GstStateChangeReturn ret;

  switch (transition) {
    case GST_STATE_CHANGE_NULL_TO_READY:
      GST_OBJECT_LOCK (element);
      if (!self->mixer) {
        if (klass->create_element)
          self->mixer = klass->create_element ();

        if (!self->mixer) {
          g_signal_emit (element,
              gst_gl_mixer_bin_signals[SIGNAL_CREATE_ELEMENT], 0, &self->mixer);
          if (self->mixer && g_object_is_floating (self->mixer))
            gst_object_ref_sink (self->mixer);
        }

        if (!self->mixer) {
          GST_ERROR_OBJECT (element, "Failed to retrieve element");
          GST_OBJECT_UNLOCK (element);
          return GST_STATE_CHANGE_FAILURE;
        }
        GST_OBJECT_UNLOCK (element);
        if (!_connect_mixer_element (self))
          return GST_STATE_CHANGE_FAILURE;

        GST_OBJECT_LOCK (element);
      }
      self->priv->running = TRUE;
      GST_OBJECT_UNLOCK (element);
      break;
    default:
      break;
  }

  ret =
      GST_ELEMENT_CLASS (gst_gl_mixer_bin_parent_class)->change_state (element,
      transition);
  if (ret == GST_STATE_CHANGE_FAILURE)
    return ret;

  switch (transition) {
    case GST_STATE_CHANGE_READY_TO_NULL:
      GST_OBJECT_LOCK (self);
      self->priv->running = FALSE;
      GST_OBJECT_UNLOCK (self);
    default:
      break;
  }

  return ret;
}

Example #2

File: gstglmixerbin.c Project: mbouron/gst-plugins-bad

void
gst_gl_mixer_bin_finish_init_with_element (GstGLMixerBin * self,
    GstElement * element)
{
  g_return_if_fail (GST_IS_ELEMENT (element));

  self->mixer = element;

  if (!_connect_mixer_element (self)) {
    gst_object_unref (self->mixer);
    self->mixer = NULL;
  }
}

Example #3

File: gstglmixerbin.c Project: mbouron/gst-plugins-bad

static void
gst_gl_mixer_bin_set_property (GObject * object,
    guint prop_id, const GValue * value, GParamSpec * pspec)
{
  GstGLMixerBin *self = GST_GL_MIXER_BIN (object);

  switch (prop_id) {
    case PROP_MIXER:
    {
      GstElement *mixer = g_value_get_object (value);
      /* FIXME: deal with replacing a mixer */
      g_return_if_fail (!self->mixer || (self->mixer == mixer));
      self->mixer = mixer;
      if (mixer)
        _connect_mixer_element (self);
      break;
    }
    default:
      if (self->mixer)
        g_object_set_property (G_OBJECT (self->mixer), pspec->name, value);
      break;
  }
}

Example #4

File: gstglmixerbin.c Project: thiblahute/gst-plugins-base

/*
 * @mixer: (transfer floating):
 */
static gboolean
gst_gl_mixer_bin_set_mixer (GstGLMixerBin * self, GstElement * mixer)
{
  g_return_val_if_fail (GST_IS_ELEMENT (mixer), FALSE);

  if (self->mixer) {
    gst_element_set_locked_state (self->mixer, TRUE);
    gst_bin_remove (GST_BIN (self), self->mixer);
    gst_element_set_state (self->mixer, GST_STATE_NULL);
    gst_object_unref (self->mixer);
    self->mixer = NULL;
  }
  self->mixer = mixer;

  gst_object_ref_sink (mixer);

  if (mixer && !_connect_mixer_element (self)) {
    gst_object_unref (self->mixer);
    self->mixer = NULL;
    return FALSE;
  }

  return TRUE;
}