Session: Query the device's sample rate when needed, not sooner

[pulseview.git] / pv / session.cpp

diff --git a/pv/session.cpp b/pv/session.cpp
index b99f0cf73827b56b3f9c641dfa22e94dadef01f7..07ee594d7c1ca0390e5af1cef6ca6d24c2f4b22e 100644 (file)
--- a/pv/session.cpp
+++ b/pv/session.cpp
@@ -91,6 +91,9 @@ using sigrok::Session;
 using Glib::VariantBase;
 
 namespace pv {
+
+shared_ptr<sigrok::Context> Session::sr_context;
+
 Session::Session(DeviceManager &device_manager, QString name) :
        device_manager_(device_manager),
        default_name_(name),
@@ -619,8 +622,6 @@ void Session::register_view(shared_ptr<views::ViewBase> view)
                                switch (signalbase->type()) {
                                case data::SignalBase::AnalogChannel:
                                case data::SignalBase::LogicChannel:
-                               case data::SignalBase::A2LChannel:
-                                       break;
                                case data::SignalBase::DecodeChannel:
 #ifdef ENABLE_DECODE
                                        trace_view->add_decode_signal(
@@ -676,6 +677,17 @@ double Session::get_samplerate() const
        return samplerate;
 }
 
+int Session::get_segment_count() const
+{
+       int min_val = INT_MAX;
+
+       for (shared_ptr<data::SignalData> data : all_signal_data_)
+               if (data->get_segment_count() < min_val)
+                       min_val = data->get_segment_count();
+
+       return min_val;
+}
+
 const unordered_set< shared_ptr<data::SignalBase> > Session::signalbases() const
 {
        return signalbases_;
@@ -940,7 +952,7 @@ void Session::free_unused_memory()
 
 void Session::feed_in_header()
 {
-       cur_samplerate_ = device_->read_config<uint64_t>(ConfigKey::SAMPLERATE);
+       // Nothing to do here for now
 }
 
 void Session::feed_in_meta(shared_ptr<Meta> meta)
@@ -989,12 +1001,31 @@ void Session::feed_in_trigger()
 
 void Session::feed_in_frame_begin()
 {
+       frame_began_ = true;
+
        if (cur_logic_segment_ || !cur_analog_segments_.empty())
                frame_began();
 }
 
+void Session::feed_in_frame_end()
+{
+       {
+               lock_guard<recursive_mutex> lock(data_mutex_);
+               cur_logic_segment_.reset();
+               cur_analog_segments_.clear();
+       }
+
+       if (frame_began_) {
+               frame_began_ = false;
+               frame_ended();
+       }
+}
+
 void Session::feed_in_logic(shared_ptr<Logic> logic)
 {
+       if (!cur_samplerate_)
+               cur_samplerate_ = device_->read_config<uint64_t>(ConfigKey::SAMPLERATE);
+
        lock_guard<recursive_mutex> lock(data_mutex_);
 
        if (!logic_data_) {
@@ -1027,6 +1058,9 @@ void Session::feed_in_logic(shared_ptr<Logic> logic)
 
 void Session::feed_in_analog(shared_ptr<Analog> analog)
 {
+       if (!cur_samplerate_)
+               cur_samplerate_ = device_->read_config<uint64_t>(ConfigKey::SAMPLERATE);
+
        lock_guard<recursive_mutex> lock(data_mutex_);
 
        const vector<shared_ptr<Channel>> channels = analog->channels();
@@ -1089,8 +1123,6 @@ void Session::feed_in_analog(shared_ptr<Analog> analog)
 void Session::data_feed_in(shared_ptr<sigrok::Device> device,
        shared_ptr<Packet> packet)
 {
-       static bool frame_began = false;
-
        (void)device;
 
        assert(device);
@@ -1110,11 +1142,6 @@ void Session::data_feed_in(shared_ptr<sigrok::Device> device,
                feed_in_trigger();
                break;
 
-       case SR_DF_FRAME_BEGIN:
-               feed_in_frame_begin();
-               frame_began = true;
-               break;
-
        case SR_DF_LOGIC:
                try {
                        feed_in_logic(dynamic_pointer_cast<Logic>(packet->payload()));
@@ -1133,20 +1160,25 @@ void Session::data_feed_in(shared_ptr<sigrok::Device> device,
                }
                break;
 
+       case SR_DF_FRAME_BEGIN:
+               feed_in_frame_begin();
+               break;
+
        case SR_DF_FRAME_END:
+               feed_in_frame_end();
+               break;
+
        case SR_DF_END:
-       {
+               // Strictly speaking, this is performed when a frame end marker was
+               // received, so there's no point doing this again. However, not all
+               // devices use frames, and for those devices, we need to do it here.
                {
                        lock_guard<recursive_mutex> lock(data_mutex_);
                        cur_logic_segment_.reset();
                        cur_analog_segments_.clear();
                }
-               if (frame_began) {
-                       frame_began = false;
-                       frame_ended();
-               }
                break;
-       }
+
        default:
                break;
        }