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-rw-r--r--gr-qtgui/lib/sink_c_impl.cc6
1 files changed, 6 insertions, 0 deletions
diff --git a/gr-qtgui/lib/sink_c_impl.cc b/gr-qtgui/lib/sink_c_impl.cc
index 29f56a5f39..2cc66872c4 100644
--- a/gr-qtgui/lib/sink_c_impl.cc
+++ b/gr-qtgui/lib/sink_c_impl.cc
@@ -89,6 +89,12 @@ namespace gr {
delete d_fft;
}
+ bool
+ sink_c_impl::check_topology(int ninputs, int noutputs)
+ {
+ return ninputs == 1;
+ }
+
void
sink_c_impl::forecast(int noutput_items, gr_vector_int &ninput_items_required)
{