Merge branch 'vladisslav2011-osmosdr-bw' into next

docs/CHANGELOG.md

@@ -60,6 +60,8 @@ All notable changes to GNSS-SDR will be documented in this file.
   load on the data link and thus allow more bandwidth.
 - Added gain setting and reading for the XTRX board when using the
   `Osmosdr_Signal_Source` implementation of a `SignalSource`.
+- The `Osmosdr_Signal_Source` implementation learned a new parameter `if_bw` to
+  manually set the bandwidth of the bandpass filter on the radio frontend.
 
 See the definitions of concepts and metrics at
 https://gnss-sdr.org/design-forces/

src/algorithms/signal_source/adapters/osmosdr_signal_source.cc

@@ -42,6 +42,7 @@ OsmosdrSignalSource::OsmosdrSignalSource(const ConfigurationInterface* configura
       gain_(configuration->property(role + ".gain", 40.0)),
       if_gain_(configuration->property(role + ".if_gain", 40.0)),
       rf_gain_(configuration->property(role + ".rf_gain", 40.0)),
+      if_bw_(configuration->property(role + ".if_bw", 0.0)),
       samples_(configuration->property(role + ".samples", static_cast<int64_t>(0))),
       in_stream_(in_stream),
       out_stream_(out_stream),
@@ -118,6 +119,12 @@ OsmosdrSignalSource::OsmosdrSignalSource(const ConfigurationInterface* configura
                         }
                 }
 
+            // 5. set bandwidth
+            if (if_bw_ > 0.0)
+                {
+                    osmosdr_source_->set_bandwidth(if_bw_, 0);
+                }
+
             // Get actual bandwidth
             std::cout << "Actual Bandwidth: " << osmosdr_source_->get_bandwidth(0) << " [Hz]...\n";
         }

src/algorithms/signal_source/adapters/osmosdr_signal_source.h

@@ -79,6 +79,7 @@ private:
     double gain_;
     double if_gain_;
     double rf_gain_;
+    double if_bw_;
 
     size_t item_size_;
     int64_t samples_;