Introduce math signals

[pulseview.git] / pv / views / trace / view.cpp

diff --git a/pv/views/trace/view.cpp b/pv/views/trace/view.cpp
index e2d9365efaf12d4c09a8a3df9b3891dd9ab38e94..a1a163b05aeb649b446a2e19596602fe3b7238dc 100644 (file)
--- a/pv/views/trace/view.cpp
+++ b/pv/views/trace/view.cpp
@@ -365,6 +365,10 @@ void View::add_signalbase(const shared_ptr<data::SignalBase> signalbase)
                signal = shared_ptr<Signal>(new AnalogSignal(session_, signalbase));
                break;
 
+       case SignalBase::MathChannel:
+               signal = shared_ptr<Signal>(new AnalogSignal(session_, signalbase));
+               break;
+
        default:
                qDebug() << "Unknown signalbase type:" << signalbase->type();
                assert(false);
@@ -929,7 +933,7 @@ pair<Timestamp, Timestamp> View::get_time_extents() const
                return make_pair(0, 0);
 
        for (shared_ptr<Signal> s : signals_)
-               if (s->data()->segments().size() > 0)
+               if (s->data() && (s->data()->segments().size() > 0))
                        data.push_back(s->data());
 
        for (const shared_ptr<SignalData>& d : data) {