SR_PRIV GVariant *std_gvar_tuple_rational(const struct sr_rational *r, unsigned int n);
SR_PRIV GVariant *std_gvar_samplerates(const uint64_t samplerates[], unsigned int n);
SR_PRIV GVariant *std_gvar_samplerates_steps(const uint64_t samplerates[], unsigned int n);
SR_PRIV GVariant *std_gvar_tuple_rational(const struct sr_rational *r, unsigned int n);
SR_PRIV GVariant *std_gvar_samplerates(const uint64_t samplerates[], unsigned int n);
SR_PRIV GVariant *std_gvar_samplerates_steps(const uint64_t samplerates[], unsigned int n);