snax.multirate_datasource.py: add queue after whitener to avoid pipeline...

snax.multirate_datasource.py: add queue after whitener to avoid pipeline hanging after segment boundaries

gstlal-burst/python/snax/multirate_datasource.py

@@ -190,6 +190,12 @@ def mkwhitened_multirate_src(pipeline, src, rates, native_rate, instrument, psd
 		firelem.set_property("fir-matrix", numpy.array(kernel, ndmin = 2))
 	whiten.connect_after("notify::mean-psd", set_fir_psd, head, reference_psd.PSDFirKernel())
 
+	#
+	# extra queue to deal with gaps produced by segmentsrc
+	#
+
+	head = pipeparts.mkqueue(pipeline, head, max_size_buffers = 0, max_size_bytes = 0, max_size_time = Gst.SECOND * (psd_fft_length + 2))
+
 	#
 	# Drop initial data to let the PSD settle
 	#