Session: Removed device parameter from update_signals

[pulseview.git] / pv / session.cpp

diff --git a/pv/session.cpp b/pv/session.cpp
index 2cdc25f83ed0ee3c718896da9d8df98d13f34876..dd78f4a176088ebb69cc5089558b4d310a7d4415 100644 (file)
--- a/pv/session.cpp
+++ b/pv/session.cpp
@@ -133,7 +133,7 @@ void Session::set_device(shared_ptr<devices::Device> device)
                (shared_ptr<sigrok::Device> device, shared_ptr<Packet> packet) {
                        data_feed_in(device, packet);
                });
-       update_signals(device_);
+       update_signals();
 
        decode_traces_.clear();
 
@@ -301,13 +301,20 @@ void Session::set_capture_state(capture_state state)
                capture_state_changed(state);
 }
 
-void Session::update_signals(shared_ptr<devices::Device> device)
+void Session::update_signals()
 {
-       assert(device);
+       assert(device_);
        assert(capture_state_ == Stopped);
 
+       const shared_ptr<sigrok::Device> sr_dev = device_->device();
+       if (!sr_dev) {
+               signals_.clear();
+               logic_data_.reset();
+               return;
+       }
+
        // Detect what data types we will receive
-       auto channels = device->device()->channels();
+       auto channels = sr_dev->channels();
        unsigned int logic_channel_count = std::count_if(
                channels.begin(), channels.end(),
                [] (shared_ptr<Channel> channel) {
@@ -334,7 +341,7 @@ void Session::update_signals(shared_ptr<devices::Device> device)
                unordered_set< shared_ptr<view::Signal> > prev_sigs(signals_);
                signals_.clear();
 
-               for (auto channel : device->device()->channels()) {
+               for (auto channel : sr_dev->channels()) {
                        shared_ptr<view::Signal> signal;
 
                        // Find the channel in the old signals
@@ -357,7 +364,7 @@ void Session::update_signals(shared_ptr<devices::Device> device)
                                case SR_CHANNEL_LOGIC:
                                        signal = shared_ptr<view::Signal>(
                                                new view::LogicSignal(*this,
-                                                       device, channel,
+                                                       device_, channel,
                                                        logic_data_));
                                        break;