C++ (Cpp) GST_GL_SRC_BIN_GET_CLASSの例

コード例 #1

ファイル: gstglsrcbin.c プロジェクト: mbouron/gst-plugins-bad

void
gst_gl_src_bin_finish_init (GstGLSrcBin * self)
{
  GstGLSrcBinClass *klass = GST_GL_SRC_BIN_GET_CLASS (self);
  GstElement *element = NULL;

  if (klass->create_element)
    element = klass->create_element ();

  if (element)
    gst_gl_src_bin_finish_init_with_element (self, element);
}

コード例 #2

ファイル: gstglsrcbin.c プロジェクト: thaytan/gst-plugins-base

static GstStateChangeReturn
gst_gl_src_bin_change_state (GstElement * element, GstStateChange transition)
{
  GstGLSrcBin *self = GST_GL_SRC_BIN (element);
  GstGLSrcBinClass *klass = GST_GL_SRC_BIN_GET_CLASS (self);
  GstStateChangeReturn ret = GST_STATE_CHANGE_SUCCESS;

  GST_DEBUG ("changing state: %s => %s",
      gst_element_state_get_name (GST_STATE_TRANSITION_CURRENT (transition)),
      gst_element_state_get_name (GST_STATE_TRANSITION_NEXT (transition)));

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

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

        if (!self->src) {
          GST_ERROR_OBJECT (element, "Failed to retrieve element");
          return GST_STATE_CHANGE_FAILURE;
        }
        if (!_connect_src_element (self))
          return GST_STATE_CHANGE_FAILURE;
      }
      break;
    default:
      break;
  }

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

  switch (transition) {
    default:
      break;
  }

  return ret;
}