Under extreme circumstances, optfir might never produce an answer (atten>300), so...

[debian/gnuradio] / gnuradio-core / src / python / gnuradio / blks2impl / pfb_channelizer.py

diff --git a/gnuradio-core/src/python/gnuradio/blks2impl/pfb_channelizer.py b/gnuradio-core/src/python/gnuradio/blks2impl/pfb_channelizer.py
index ecbdd2047660322772c1145548f7b163b71ba616..3ddc1749a7ba87c19e300d36feb61215cd506bfe 100644 (file)
--- a/gnuradio-core/src/python/gnuradio/blks2impl/pfb_channelizer.py
+++ b/gnuradio-core/src/python/gnuradio/blks2impl/pfb_channelizer.py
@@ -54,6 +54,10 @@ class pfb_channelizer_ccf(gr.hier_block2):
                     made = False
                     print("Warning: set ripple to %.4f dB. If this is a problem, adjust the attenuation or create your own filter taps." % (ripple))
 
+                    # Build in an exit strategy; if we've come this far, it ain't working.
+                    if(ripple >= 1.0):
+                        raise RuntimeError("optfir could not generate an appropriate filter.")
+
         self.s2ss = gr.stream_to_streams(gr.sizeof_gr_complex, self._numchans)
         self.pfb = gr.pfb_channelizer_ccf(self._numchans, self._taps,
                                           self._oversample_rate)