DecodeSignal: Allow muxed logic data to be cached

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

diff --git a/pv/data/signaldata.hpp b/pv/data/signaldata.hpp
index 034703e19a2df88dec8ba57580fa9f6bfb1507aa..adede1c211c595eefb9e108d1929cad6d9b5af0b 100644 (file)
--- a/pv/data/signaldata.hpp
+++ b/pv/data/signaldata.hpp
@@ -24,6 +24,8 @@
 #include <memory>
 #include <vector>
 
+#include <QObject>
+
 using std::shared_ptr;
 using std::vector;
 
@@ -32,15 +34,19 @@ namespace data {
 
 class Segment;
 
-class SignalData
+class SignalData : public QObject
 {
+       Q_OBJECT
+
 public:
        SignalData() = default;
-       virtual ~SignalData() {}
+       virtual ~SignalData() = default;
 
 public:
        virtual vector< shared_ptr<Segment> > segments() const = 0;
 
+       virtual int get_segment_count() const = 0;
+
        virtual void clear() = 0;
 
        virtual uint64_t max_sample_count() const = 0;