From c014a0926d24d0edf10ced7ce122d154b7e33f18 Mon Sep 17 00:00:00 2001
From: Tom <trondeau@vt.edu>
Date: Tue, 6 Oct 2009 13:50:54 -0700
Subject: Making second output port of PFB clock recovery optional.
---
gnuradio-core/src/lib/filter/gr_pfb_clock_sync_ccf.cc | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/gnuradio-core/src/lib/filter/gr_pfb_clock_sync_ccf.cc b/gnuradio-core/src/lib/filter/gr_pfb_clock_sync_ccf.cc
index 5577e42c8a..f7dd946855 100644
--- a/gnuradio-core/src/lib/filter/gr_pfb_clock_sync_ccf.cc
+++ b/gnuradio-core/src/lib/filter/gr_pfb_clock_sync_ccf.cc
@@ -50,7 +50,7 @@ gr_pfb_clock_sync_ccf::gr_pfb_clock_sync_ccf (float sps, float gain,
float init_phase)
: gr_block ("pfb_clock_sync_ccf",
gr_make_io_signature (1, 1, sizeof(gr_complex)),
- gr_make_io_signature2 (2, 2, sizeof(gr_complex), sizeof(float))),
+ gr_make_io_signature2 (1, 2, sizeof(gr_complex), sizeof(float))),
d_updated (false), d_sps(sps), d_alpha(gain)
{
d_nfilters = filter_size;
@@ -209,7 +209,10 @@ gr_pfb_clock_sync_ccf::general_work (int noutput_items,
{
gr_complex *in = (gr_complex *) input_items[0];
gr_complex *out = (gr_complex *) output_items[0];
- float *err = (float *) output_items[1];
+
+ float *err;
+ if(ninput_items.size() == 2)
+ err = (float *) output_items[1];
if (d_updated) {
d_updated = false;
@@ -226,7 +229,9 @@ gr_pfb_clock_sync_ccf::general_work (int noutput_items,
while((i < noutput_items) && (count < nrequired)) {
out[i] = d_filters[d_last_filter]->filter(&in[count]);
error = (out[i] * d_diff_filters[d_last_filter]->filter(&in[count])).real();
- err[i] = error;
+
+ if(ninput_items.size() == 2)
+ err[i] = error;
d_acc += d_alpha*error;
if(d_acc >= (int)d_nfilters) {
--
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