+ float min_length, int sig_index);
+
+private:
+ uint64_t get_subsample(int level, uint64_t offset) const;
+
+ static int64_t pow2_ceil(int64_t x, unsigned int power);
+
+private:
+ struct MipMapLevel _mip_map[ScaleStepCount];
+ uint64_t _last_append_sample;
+
+ friend class LogicDataSnapshotTest::Pow2;
+ friend class LogicDataSnapshotTest::Basic;
+ friend class LogicDataSnapshotTest::LargeData;