usrp: parse rx stream args scalar

1 files changed, 2 insertions, 1 deletions

diff --git a/host/lib/usrp/usrp2/io_impl.cpp b/host/lib/usrp/usrp2/io_impl.cpp
index 660156285..d144c08bf 100644
--- a/host/lib/usrp/usrp2/io_impl.cpp
+++ b/host/lib/usrp/usrp2/io_impl.cpp
@@ -372,6 +372,7 @@ rx_streamer::sptr usrp2_impl::get_rx_stream(const uhd::stream_args_t &args_){
     //setup defaults for unspecified values
     args.otw_format = args.otw_format.empty()? "sc16" : args.otw_format;
     args.channels = args.channels.empty()? std::vector<size_t>(1, 0) : args.channels;
+    const unsigned sc8_scalar = unsigned(args.args.cast<double>("scalar", 0x400));
 
     //calculate packet size
     static const size_t hdr_size = 0
@@ -406,7 +407,7 @@ rx_streamer::sptr usrp2_impl::get_rx_stream(const uhd::stream_args_t &args_){
             if (chan < num_chan_so_far){
                 const size_t dsp = num_chan_so_far - chan - 1;
                 _mbc[mb].rx_dsps[dsp]->set_nsamps_per_packet(spp); //seems to be a good place to set this
-                _mbc[mb].rx_dsps[dsp]->set_format(args.otw_format, 0x400);
+                _mbc[mb].rx_dsps[dsp]->set_format(args.otw_format, sc8_scalar);
                 my_streamer->set_xport_chan_get_buff(chan_i, boost::bind(
                     &zero_copy_if::get_recv_buff, _mbc[mb].rx_dsp_xports[dsp], _1
                 ));