C++ (Cpp) gst_color_balance_get_balance_type示例

示例#1

文件： gstglsinkbin.c 项目： CogentEmbedded/gst-plugins-bad

static GstColorBalanceType
gst_gl_sink_bin_color_balance_get_balance_type (GstColorBalance * balance)
{
  GstGLSinkBin *self = GST_GL_SINK_BIN (balance);
  GstColorBalance *balance_element = NULL;
  GstColorBalanceType type = 0;

  balance_element =
      GST_COLOR_BALANCE (gst_bin_get_by_interface (GST_BIN (self),
          GST_TYPE_COLOR_BALANCE));

  if (balance_element) {
    type = gst_color_balance_get_balance_type (balance_element);
    gst_object_unref (balance_element);
  }

  return type;
}

示例#2

文件： colorbalance.cpp 项目： OBIGOGIT/qt-gstreamer

ColorBalanceType ColorBalance::type() const
{
    return static_cast<ColorBalanceType>(gst_color_balance_get_balance_type(object<GstColorBalance>()));
}

示例#3

文件： gstreamer.c 项目： BorodaZizitopa/gstplay

static GstElement *find_color_balance_element() {
	GstIterator *iterator = gst_bin_iterate_all_by_interface(
		GST_BIN(pipeline),  GST_TYPE_COLOR_BALANCE);
	
	GstElement *color_balance_element = NULL;
	gboolean done = FALSE, hardware = FALSE;
#if GST_CHECK_VERSION(1, 0, 0)
	GValue item = G_VALUE_INIT;
#else
	gpointer item;
#endif
	while (!done) {
	switch (gst_iterator_next(iterator, &item)) {
	case GST_ITERATOR_OK : {
#if GST_CHECK_VERSION(1, 0, 0)
		GstElement *element = g_value_get_object(&item);
#else
		GstElement *element = GST_ELEMENT(item);
#endif
		if (is_valid_color_balance_element(element)) {
			if (!color_balance_element) {
				color_balance_element = GST_ELEMENT_CAST(	
					gst_object_ref(element));
				hardware =
					(gst_color_balance_get_balance_type(GST_COLOR_BALANCE
					(element)) == GST_COLOR_BALANCE_HARDWARE);
			}
			else if (!hardware) {
				gboolean tmp =
					(gst_color_balance_get_balance_type(GST_COLOR_BALANCE
					(element)) == GST_COLOR_BALANCE_HARDWARE);

				if (tmp) {
					if (color_balance_element)
						gst_object_unref(color_balance_element);
					color_balance_element =
						GST_ELEMENT_CAST(gst_object_ref(element));
					hardware = TRUE;
				}
			}
		}
#if GST_CHECK_VERSION(1, 0, 0)
		g_value_reset(&item);
#endif
		if (hardware && color_balance_element)
			done = TRUE;
        	break;
		}
	case GST_ITERATOR_RESYNC :
		gst_iterator_resync(iterator);
		done = FALSE;
		hardware = FALSE;
		if (color_balance_element)
			gst_object_unref(color_balance_element);
		color_balance_element = NULL;
		break;
	case GST_ITERATOR_DONE:
	case GST_ITERATOR_ERROR:
	default:
		done = TRUE;
	}
	}
#if GST_CHECK_VERSION(1, 0, 0)
	g_value_unset(&item);
#endif
	gst_iterator_free(iterator);
	return color_balance_element;
}