X-Git-Url: http://sigrok.org/gitweb/?a=blobdiff_plain;f=pv%2Fsigsession.cpp;h=1ee5e0033939a1918102f9edd71e84c4e48b03bc;hb=4206fe26e6b3f6439e382a072f5ff67c009f412a;hp=cad702d810c923f818c363940c69a78f83c099ab;hpb=e042ad64e28d681e0d52409ff40a9318047d9b09;p=pulseview.git

diff --git a/pv/sigsession.cpp b/pv/sigsession.cpp
index cad702d8..1ee5e003 100644
--- a/pv/sigsession.cpp
+++ b/pv/sigsession.cpp
@@ -199,10 +199,18 @@ void SigSession::add_decoder(srd_decoder *const dec,
 {
 	{
 		lock_guard<mutex> lock(_signals_mutex);
+
+		if (!_decode_traces.empty()) {
+			qDebug("Currently only one decode trace can be added "
+				"at once");
+			_decode_traces.clear();
+		}
+
 		shared_ptr<data::Decoder> decoder(
 			new data::Decoder(dec, probes));
 		shared_ptr<view::DecodeSignal> d(
-			new view::DecodeSignal(*this, decoder));
+			new view::DecodeSignal(*this, decoder,
+				_decode_traces.size()));
 		_decode_traces.push_back(d);
 	}
 	signals_changed();