+ std::vector<PeakTime> _sample_peak;
+ std::vector<float> _true_peak;
+ boost::optional<float> _integrated_loudness;
+ boost::optional<float> _loudness_range;
+ /** If this analysis was run on a single piece of
+ * content we store its gain in dB when the analysis
+ * happened.
+ */
+ boost::optional<double> _analysis_gain;
+
+ static int const _current_state_version;