Gstreamer debug

1.打印信息

    GstElementFactory *factory;    factory = gst_element_factory_find ("rtspsrc");    if (!factory) {        GST_DEBUG ("You don‘t have the ‘audioconvert‘ element installed!\n");        return -1;    }    GST_DEBUG ("\nThe ‘%s‘ element is a member of the category '%s'. Description: %s\n",             gst_plugin_feature_get_name (GST_PLUGIN_FEATURE (factory)),             gst_element_factory_get_klass (factory),             gst_element_factory_get_description (factory));