Method update_sample_rate_selector

DSView/pv/toolbars/samplingbar.cpp:374–439

        }

        void SamplingBar::update_sample_rate_selector()
        { 
            GVariant *gvar_dict, *gvar_list;
            const uint64_t *elements = NULL;
            gsize num_elements;

            dsv_info("Update rate list.");

            if (_updating_sample_rate)
            {
                dsv_err("Error! The rate list is updating.");
                return;
            }

            disconnect(&_sample_rate, SIGNAL(currentIndexChanged(int)),
                       this, SLOT(on_samplerate_sel(int)));

            if (_device_agent->have_instance() == false)
            {
                dsv_info("SamplingBar::update_sample_rate_selector, have no device.");
                return;
            }

            _updating_sample_rate = true;

            gvar_dict = _device_agent->get_config_list(NULL, SR_CONF_SAMPLERATE);
            if (gvar_dict == NULL)
            {
                _sample_rate.clear();
                _sample_rate.show();
                _updating_sample_rate = false;
                return;
            }

            if ((gvar_list = g_variant_lookup_value(gvar_dict,
                                                    "samplerates", G_VARIANT_TYPE("at"))))
            {
                elements = (const uint64_t *)g_variant_get_fixed_array(
                    gvar_list, &num_elements, sizeof(uint64_t));
                _sample_rate.clear();

                for (unsigned int i = 0; i < num_elements; i++)
                {
                    char *const s = sr_samplerate_string(elements[i]);
                    _sample_rate.addItem(QString(s),
                                         QVariant::fromValue(elements[i]));
                    g_free(s);
                }

                _sample_rate.show();
                g_variant_unref(gvar_list);
            }

            _sample_rate.setMinimumWidth(_sample_rate.sizeHint().width() + 15);
            _sample_rate.view()->setMinimumWidth(_sample_rate.sizeHint().width() + 30);

            _updating_sample_rate = false;
            g_variant_unref(gvar_dict);