Declare a virtual destructor for SignalData

[pulseview.git] / pv / data / signaldata.h

diff --git a/pv/data/signaldata.h b/pv/data/signaldata.h
index c43b7a37e7e3e1934858ffd438ee0a80a95968e0..280874c4785d074af42b9a7284ae888c4217b02b 100644 (file)
--- a/pv/data/signaldata.h
+++ b/pv/data/signaldata.h
@@ -30,18 +30,20 @@ class SignalData
 {
 public:
        SignalData();
+       virtual ~SignalData() {}
 
 public:
-       double get_samplerate() const;
+       double samplerate() const;
        void set_samplerate(double samplerate);
 
        double get_start_time() const;
 
-       virtual void clear_snapshots() = 0;
+       virtual void clear() = 0;
 
-protected:
-       const double _start_time;
+       virtual uint64_t get_max_sample_count() const = 0;
 
+protected:
+       double _start_time;
        double _samplerate;
 };