Added AwaitTrigger capture state

[pulseview.git] / pv / sigsession.cpp

diff --git a/pv/sigsession.cpp b/pv/sigsession.cpp
index 793a5e8a894147073f2d91fe5143690cd1e1e10d..cbdbac07c2031d6232af8089bbf51b7f25d403ac 100644 (file)
--- a/pv/sigsession.cpp
+++ b/pv/sigsession.cpp
@@ -164,8 +164,10 @@ boost::shared_ptr<data::Logic> SigSession::get_data()
 void SigSession::set_capture_state(capture_state state)
 {
        lock_guard<mutex> lock(_sampling_mutex);
+       const bool changed = _capture_state != state;
        _capture_state = state;
-       capture_state_changed(state);
+       if(changed)
+               capture_state_changed(state);
 }
 
 /**
@@ -323,6 +325,19 @@ void SigSession::update_signals()
        signals_changed();
 }
 
+bool SigSession::is_trigger_enabled() const
+{
+       assert(_sdi);
+       for (const GSList *l = _sdi->probes; l; l = l->next) {
+               const sr_probe *const p = (const sr_probe *)l->data;
+               assert(p);
+               if (p->trigger && p->trigger[0] != '\0')
+                       return true;
+       }
+
+       return false;
+}
+
 void SigSession::load_thread_proc(const string name,
        function<void (const QString)> error_handler)
 {
@@ -387,7 +402,7 @@ void SigSession::sample_thread_proc(struct sr_dev_inst *sdi,
                return;
        }
 
-       set_capture_state(Running);
+       set_capture_state(is_trigger_enabled() ? AwaitingTrigger : Running);
 
        sr_session_run();
        sr_session_destroy();
@@ -455,6 +470,8 @@ void SigSession::feed_in_logic(const sr_datafeed_logic &logic)
 
        if (!_cur_logic_snapshot)
        {
+               set_capture_state(Running);
+
                // Create a new data snapshot
                _cur_logic_snapshot = shared_ptr<data::LogicSnapshot>(
                        new data::LogicSnapshot(logic));
@@ -481,6 +498,8 @@ void SigSession::feed_in_analog(const sr_datafeed_analog &analog)
 
        if (!_cur_analog_snapshot)
        {
+               set_capture_state(Running);
+
                // Create a new data snapshot
                _cur_analog_snapshot = shared_ptr<data::AnalogSnapshot>(
                        new data::AnalogSnapshot(analog));