SR_PRIV int std_double_tuple_idx(GVariant *data, const double a[][2], unsigned int n);
SR_PRIV int std_double_tuple_idx_d0(const double d, const double a[][2], unsigned int n);
+SR_PRIV int std_cg_idx(const struct sr_channel_group *cg, struct sr_channel_group *a[], unsigned int n);
+
/*--- resource.c ------------------------------------------------------------*/
SR_PRIV int64_t sr_file_get_size(FILE *file);