usrp1: did work for stream interface on usrp1

6 files changed, 195 insertions, 136 deletions

diff --git a/host/lib/transport/super_recv_packet_handler.hpp b/host/lib/transport/super_recv_packet_handler.hpp
index f0b053473..f4dbc5531 100644
--- a/host/lib/transport/super_recv_packet_handler.hpp
+++ b/host/lib/transport/super_recv_packet_handler.hpp
@@ -27,7 +27,6 @@
 #include <uhd/types/metadata.hpp>
 #include <uhd/transport/vrt_if_packet.hpp>
 #include <uhd/transport/zero_copy.hpp>
-#include <boost/thread/mutex.hpp>
 #include <boost/dynamic_bitset.hpp>
 #include <boost/foreach.hpp>
 #include <boost/function.hpp>
@@ -135,11 +134,6 @@ public:
         _props.at(xport_chan).handle_overflow = handle_overflow;
     }
 
-    //! Get a scoped lock object for this instance
-    boost::mutex::scoped_lock get_scoped_lock(void){
-        return boost::mutex::scoped_lock(_mutex);
-    }
-
     //! Set the scale factor used in float conversion
     void set_scale_factor(const double scale_factor){
         _scale_factor = scale_factor;
@@ -156,8 +150,6 @@ public:
         uhd::rx_metadata_t &metadata,
         double timeout
     ){
-        boost::mutex::scoped_lock lock(_mutex);
-
         //handle metadata queued from a previous receive
         if (_queue_error_for_next_call){
             _queue_error_for_next_call = false;
@@ -197,7 +189,6 @@ public:
 
 private:
 
-    boost::mutex _mutex;
     vrt_unpacker_type _vrt_unpacker;
     size_t _header_offset_words32;
     double _tick_rate, _samp_rate;
diff --git a/host/lib/transport/super_send_packet_handler.hpp b/host/lib/transport/super_send_packet_handler.hpp
index 87ae01d47..079fea11e 100644
--- a/host/lib/transport/super_send_packet_handler.hpp
+++ b/host/lib/transport/super_send_packet_handler.hpp
@@ -28,7 +28,6 @@
 #include <uhd/transport/vrt_if_packet.hpp>
 #include <uhd/transport/zero_copy.hpp>
 #include <boost/thread/thread_time.hpp>
-#include <boost/thread/mutex.hpp>
 #include <boost/foreach.hpp>
 #include <boost/function.hpp>
 #include <iostream>
@@ -115,11 +114,6 @@ public:
         _max_samples_per_packet = num_samps;
     }
 
-    //! Get a scoped lock object for this instance
-    boost::mutex::scoped_lock get_scoped_lock(void){
-        return boost::mutex::scoped_lock(_mutex);
-    }
-
     //! Set the scale factor used in float conversion
     void set_scale_factor(const double scale_factor){
         _scale_factor = scale_factor;
@@ -136,8 +130,6 @@ public:
         const uhd::tx_metadata_t &metadata,
         double timeout
     ){
-        boost::mutex::scoped_lock lock(_mutex);
-
         //translate the metadata to vrt if packet info
         vrt::if_packet_info_t if_packet_info;
         if_packet_info.has_sid = false;
@@ -200,7 +192,6 @@ public:
 
 private:
 
-    boost::mutex _mutex;
     vrt_packer_type _vrt_packer;
     size_t _header_offset_words32;
     double _tick_rate, _samp_rate;
diff --git a/host/lib/usrp/usrp1/io_impl.cpp b/host/lib/usrp/usrp1/io_impl.cpp
index de325ea5d..7d4fe2ec7 100644
--- a/host/lib/usrp/usrp1/io_impl.cpp
+++ b/host/lib/usrp/usrp1/io_impl.cpp
@@ -33,6 +33,7 @@
 #include <boost/thread/thread.hpp>
 #include <boost/bind.hpp>
 #include <boost/format.hpp>
+#include <boost/make_shared.hpp>
 
 using namespace uhd;
 using namespace uhd::usrp;
@@ -138,10 +139,6 @@ struct usrp1_impl::io_impl{
 
     zero_copy_if::sptr data_transport;
 
-    //state management for the vrt packet handler code
-    sph::recv_packet_handler recv_handler;
-    sph::send_packet_handler send_handler;
-
     //wrapper around the actual send buffer interface
     //all of this to ensure only aligned lengths are committed
     //NOTE: you must commit before getting a new buffer
@@ -219,13 +216,6 @@ void usrp1_impl::io_impl::flush_send_buff(void){
  * Initialize internals within this file
  **********************************************************************/
 void usrp1_impl::io_init(void){
-    _rx_otw_type.width = 16;
-    _rx_otw_type.shift = 0;
-    _rx_otw_type.byteorder = otw_type_t::BO_LITTLE_ENDIAN;
-
-    _tx_otw_type.width = 16;
-    _tx_otw_type.shift = 0;
-    _tx_otw_type.byteorder = otw_type_t::BO_LITTLE_ENDIAN;
 
     _io_impl = UHD_PIMPL_MAKE(io_impl, (_data_transport));
 
@@ -234,18 +224,6 @@ void usrp1_impl::io_init(void){
         &usrp1_impl::vandal_conquest_loop, this
     ));
 
-    //init some handler stuff
-    _io_impl->recv_handler.set_tick_rate(_master_clock_rate);
-    _io_impl->recv_handler.set_vrt_unpacker(&usrp1_bs_vrt_unpacker);
-    _io_impl->recv_handler.set_xport_chan_get_buff(0, boost::bind(
-        &uhd::transport::zero_copy_if::get_recv_buff, _io_impl->data_transport, _1
-    ));
-    _io_impl->send_handler.set_tick_rate(_master_clock_rate);
-    _io_impl->send_handler.set_vrt_packer(&usrp1_bs_vrt_packer);
-    _io_impl->send_handler.set_xport_chan_get_buff(0, boost::bind(
-        &usrp1_impl::io_impl::get_send_buff, _io_impl.get(), _1
-    ));
-
     //init as disabled, then call the real function (uses restore)
     this->enable_rx(false);
     this->enable_tx(false);
@@ -325,17 +303,107 @@ void usrp1_impl::vandal_conquest_loop(void){
 }
 
 /***********************************************************************
+ * RX streamer wrapper that talks to soft time control
+ **********************************************************************/
+class usrp1_recv_packet_streamer : public sph::recv_packet_handler, public rx_streamer{
+public:
+    usrp1_recv_packet_streamer(const size_t max_num_samps, soft_time_ctrl::sptr stc){
+        _max_num_samps = max_num_samps;
+        _stc = stc;
+    }
+
+    size_t get_num_channels(void) const{
+        return this->size();
+    }
+
+    size_t get_max_num_samps(void) const{
+        return _max_num_samps;
+    }
+
+    size_t recv(
+        const rx_streamer::buffs_type &buffs,
+        const size_t nsamps_per_buff,
+        uhd::rx_metadata_t &metadata,
+        double timeout
+    ){
+        //interleave a "soft" inline message into the receive stream:
+        if (_stc->get_inline_queue().pop_with_haste(metadata)) return 0;
+
+        size_t num_samps_recvd = sph::recv_packet_handler::recv(
+            buffs, nsamps_per_buff, metadata, timeout
+        );
+
+        return _stc->recv_post(metadata, num_samps_recvd);
+    }
+
+private:
+    size_t _max_num_samps;
+    soft_time_ctrl::sptr _stc;
+};
+
+/***********************************************************************
+ * TX streamer wrapper that talks to soft time control
+ **********************************************************************/
+class usrp1_send_packet_streamer : public sph::send_packet_handler, public tx_streamer{
+public:
+    usrp1_send_packet_streamer(const size_t max_num_samps, soft_time_ctrl::sptr stc, boost::function<void(bool)> tx_enb_fcn){
+        _max_num_samps = max_num_samps;
+        this->set_max_samples_per_packet(_max_num_samps);
+        _stc = stc;
+        _tx_enb_fcn = tx_enb_fcn;
+    }
+
+    size_t get_num_channels(void) const{
+        return this->size();
+    }
+
+    size_t get_max_num_samps(void) const{
+        return _max_num_samps;
+    }
+
+    size_t send(
+        const tx_streamer::buffs_type &buffs,
+        const size_t nsamps_per_buff,
+        const uhd::tx_metadata_t &metadata,
+        double timeout
+    ){
+        if (_stc->send_pre(metadata, timeout)) return 0;
+
+        _tx_enb_fcn(true); //always enable (it will do the right thing)
+        size_t num_samps_sent = sph::send_packet_handler::send(
+            buffs, nsamps_per_buff, metadata, timeout
+        );
+
+        //handle eob flag (commit the buffer, //disable the DACs)
+        //check num samps sent to avoid flush on incomplete/timeout
+        if (metadata.end_of_burst and num_samps_sent == nsamps_per_buff){
+            async_metadata_t metadata;
+            metadata.channel = 0;
+            metadata.has_time_spec = true;
+            metadata.time_spec = _stc->get_time();
+            metadata.event_code = async_metadata_t::EVENT_CODE_BURST_ACK;
+            _stc->get_async_queue().push_with_pop_on_full(metadata);
+            _tx_enb_fcn(false);
+        }
+
+        return num_samps_sent;
+    }
+
+private:
+    size_t _max_num_samps;
+    soft_time_ctrl::sptr _stc;
+    boost::function<void(bool)> _tx_enb_fcn;
+};
+
+/***********************************************************************
  * Properties callback methods below
  **********************************************************************/
 void usrp1_impl::update_rx_subdev_spec(const uhd::usrp::subdev_spec_t &spec){
-    boost::mutex::scoped_lock lock = _io_impl->recv_handler.get_scoped_lock();
 
     //sanity checking
     validate_subdev_spec(_tree, spec, "rx");
 
     _rx_subdev_spec = spec; //shadow
-    //_io_impl->recv_handler.resize(spec.size()); //always 1
-    _io_impl->recv_handler.set_converter(_rx_otw_type, spec.size());
 
     //set the mux and set the number of rx channels
     std::vector<mapping_pair_t> mapping;
@@ -351,14 +419,11 @@ void usrp1_impl::update_rx_subdev_spec(const uhd::usrp::subdev_spec_t &spec){
 }
 
 void usrp1_impl::update_tx_subdev_spec(const uhd::usrp::subdev_spec_t &spec){
-    boost::mutex::scoped_lock lock = _io_impl->send_handler.get_scoped_lock();
 
     //sanity checking
     validate_subdev_spec(_tree, spec, "tx");
 
     _tx_subdev_spec = spec; //shadow
-    //_io_impl->send_handler.resize(spec.size()); //always 1
-    _io_impl->send_handler.set_converter(_tx_otw_type, spec.size());
 
     //set the mux and set the number of tx channels
     std::vector<mapping_pair_t> mapping;
@@ -371,13 +436,9 @@ void usrp1_impl::update_tx_subdev_spec(const uhd::usrp::subdev_spec_t &spec){
     bool s = this->disable_tx();
     _iface->poke32(FR_TX_MUX, calc_tx_mux(mapping));
     this->restore_tx(s);
-
-    //if the spec changes size, so does the max samples per packet...
-    _io_impl->send_handler.set_max_samples_per_packet(get_max_send_samps_per_packet());
 }
 
 double usrp1_impl::update_rx_samp_rate(const double samp_rate){
-    boost::mutex::scoped_lock lock = _io_impl->recv_handler.get_scoped_lock();
 
     const size_t rate = uhd::clip<size_t>(
         boost::math::iround(_master_clock_rate / samp_rate), size_t(std::ceil(_master_clock_rate / 8e6)), 256
@@ -387,12 +448,17 @@ double usrp1_impl::update_rx_samp_rate(const double samp_rate){
     _iface->poke32(FR_DECIM_RATE, rate/2 - 1);
     this->restore_rx(s);
 
-    _io_impl->recv_handler.set_samp_rate(_master_clock_rate / rate);
+    //update the streamer if created
+    boost::shared_ptr<usrp1_recv_packet_streamer> my_streamer =
+        boost::dynamic_pointer_cast<usrp1_recv_packet_streamer>(_rx_streamer.lock());
+    if (my_streamer.get() != NULL){
+        my_streamer->set_samp_rate(_master_clock_rate / rate);
+    }
+
     return _master_clock_rate / rate;
 }
 
 double usrp1_impl::update_tx_samp_rate(const double samp_rate){
-    boost::mutex::scoped_lock lock = _io_impl->send_handler.get_scoped_lock();
 
     const size_t rate = uhd::clip<size_t>(
         boost::math::iround(_master_clock_rate / samp_rate), size_t(std::ceil(_master_clock_rate / 8e6)), 256
@@ -402,10 +468,26 @@ double usrp1_impl::update_tx_samp_rate(const double samp_rate){
     _iface->poke32(FR_INTERP_RATE, rate/2 - 1);
     this->restore_tx(s);
 
-    _io_impl->send_handler.set_samp_rate(_master_clock_rate / rate);
+    //update the streamer if created
+    boost::shared_ptr<usrp1_send_packet_streamer> my_streamer =
+        boost::dynamic_pointer_cast<usrp1_send_packet_streamer>(_tx_streamer.lock());
+    if (my_streamer.get() != NULL){
+        my_streamer->set_samp_rate(_master_clock_rate / rate);
+    }
+
     return _master_clock_rate / rate;
 }
 
+void usrp1_impl::update_rates(void){
+    const fs_path mb_path = "/mboards/0";
+    BOOST_FOREACH(const std::string &name, _tree->list(mb_path / "rx_dsps")){
+        _tree->access<double>(mb_path / "rx_dsps" / name / "rate" / "value").update();
+    }
+    BOOST_FOREACH(const std::string &name, _tree->list(mb_path / "tx_dsps")){
+        _tree->access<double>(mb_path / "tx_dsps" / name / "rate" / "value").update();
+    }
+}
+
 double usrp1_impl::update_rx_dsp_freq(const size_t dspno, const double freq_){
 
     //correct for outside of rate (wrap around)
@@ -443,67 +525,82 @@ bool usrp1_impl::recv_async_msg(
 }
 
 /***********************************************************************
- * Data send + helper functions
+ * Receive streamer
  **********************************************************************/
-size_t usrp1_impl::get_max_send_samps_per_packet(void) const {
-    return (_data_transport->get_send_frame_size() - alignment_padding)
-        / _tx_otw_type.get_sample_size()
-        / _tx_subdev_spec.size()
-    ;
-}
+rx_streamer::sptr usrp1_impl::get_rx_streamer(const uhd::streamer_args &args){
+    //map an empty channel set to chan0
+    const std::vector<size_t> channels = args.channels.empty()? std::vector<size_t>(1, 0) : args.channels;
+
+    //calculate packet size
+    const size_t bpp = _data_transport->get_recv_frame_size()/channels.size();
+    const size_t spp = bpp/convert::get_bytes_per_item(args.otw_format);
+
+    //make the new streamer given the samples per packet
+    boost::shared_ptr<usrp1_recv_packet_streamer> my_streamer =
+        boost::make_shared<usrp1_recv_packet_streamer>(spp, _soft_time_ctrl);
+
+    //init some streamer stuff
+    my_streamer->set_tick_rate(_master_clock_rate);
+    my_streamer->set_vrt_unpacker(&usrp1_bs_vrt_unpacker);
+    my_streamer->set_xport_chan_get_buff(0, boost::bind(
+        &uhd::transport::zero_copy_if::get_recv_buff, _io_impl->data_transport, _1
+    ));
 
-size_t usrp1_impl::send(
-    const send_buffs_type &buffs, size_t nsamps_per_buff,
-    const tx_metadata_t &metadata, const io_type_t &io_type,
-    send_mode_t send_mode, double timeout
-){
-    if (_soft_time_ctrl->send_pre(metadata, timeout)) return 0;
+    //set the converter
+    uhd::convert::id_type id;
+    id.input_markup = args.otw_format + "_item32_le";
+    id.num_inputs = channels.size();
+    id.output_markup = args.cpu_format;
+    id.num_outputs = 1;
+    id.args = args.args;
+    my_streamer->set_converter(id);
 
-    this->tx_stream_on_off(true); //always enable (it will do the right thing)
-    size_t num_samps_sent = _io_impl->send_handler.send(
-        buffs, nsamps_per_buff,
-        metadata, io_type,
-        send_mode, timeout
-    );
+    //save as weak ptr for update access
+    _rx_streamer = my_streamer;
 
-    //handle eob flag (commit the buffer, /*disable the DACs*/)
-    //check num samps sent to avoid flush on incomplete/timeout
-    if (metadata.end_of_burst and num_samps_sent == nsamps_per_buff){
-        async_metadata_t metadata;
-        metadata.channel = 0;
-        metadata.has_time_spec = true;
-        metadata.time_spec = _soft_time_ctrl->get_time();
-        metadata.event_code = async_metadata_t::EVENT_CODE_BURST_ACK;
-        _soft_time_ctrl->get_async_queue().push_with_pop_on_full(metadata);
-        this->tx_stream_on_off(false);
-    }
+    //sets all tick and samp rates on this streamer
+    this->update_rates();
 
-    return num_samps_sent;
+    return my_streamer;
 }
 
 /***********************************************************************
- * Data recv + helper functions
+ * Transmit streamer
  **********************************************************************/
-size_t usrp1_impl::get_max_recv_samps_per_packet(void) const {
-    return _data_transport->get_recv_frame_size()
-        / _rx_otw_type.get_sample_size()
-        / _rx_subdev_spec.size()
-    ;
-}
+tx_streamer::sptr usrp1_impl::get_tx_streamer(const uhd::streamer_args &args){
+    //map an empty channel set to chan0
+    const std::vector<size_t> channels = args.channels.empty()? std::vector<size_t>(1, 0) : args.channels;
+
+    //calculate packet size
+    const size_t bpp = _data_transport->get_send_frame_size()/channels.size();
+    const size_t spp = bpp/convert::get_bytes_per_item(args.otw_format);
+
+    //make the new streamer given the samples per packet
+    boost::function<void(bool)> tx_fcn = boost::bind(&usrp1_impl::tx_stream_on_off, this, _1);
+    boost::shared_ptr<usrp1_send_packet_streamer> my_streamer =
+        boost::make_shared<usrp1_send_packet_streamer>(spp, _soft_time_ctrl, tx_fcn);
+
+    //init some streamer stuff
+    my_streamer->set_tick_rate(_master_clock_rate);
+    my_streamer->set_vrt_packer(&usrp1_bs_vrt_packer);
+    my_streamer->set_xport_chan_get_buff(0, boost::bind(
+        &usrp1_impl::io_impl::get_send_buff, _io_impl.get(), _1
+    ));
 
-size_t usrp1_impl::recv(
-    const recv_buffs_type &buffs, size_t nsamps_per_buff,
-    rx_metadata_t &metadata, const io_type_t &io_type,
-    recv_mode_t recv_mode, double timeout
-){
-    //interleave a "soft" inline message into the receive stream:
-    if (_soft_time_ctrl->get_inline_queue().pop_with_haste(metadata)) return 0;
+    //set the converter
+    uhd::convert::id_type id;
+    id.input_markup = args.cpu_format;
+    id.num_inputs = 1;
+    id.output_markup = args.otw_format + "_item32_le";
+    id.num_outputs = channels.size();
+    id.args = args.args;
+    my_streamer->set_converter(id);
 
-    size_t num_samps_recvd = _io_impl->recv_handler.recv(
-        buffs, nsamps_per_buff,
-        metadata, io_type,
-        recv_mode, timeout
-    );
+    //save as weak ptr for update access
+    _tx_streamer = my_streamer;
+
+    //sets all tick and samp rates on this streamer
+    this->update_rates();
 
-    return _soft_time_ctrl->recv_post(metadata, num_samps_recvd);
+    return my_streamer;
 }
diff --git a/host/lib/usrp/usrp1/usrp1_impl.cpp b/host/lib/usrp/usrp1/usrp1_impl.cpp
index fe4541d38..d169c4823 100644
--- a/host/lib/usrp/usrp1/usrp1_impl.cpp
+++ b/host/lib/usrp/usrp1/usrp1_impl.cpp
@@ -281,6 +281,7 @@ usrp1_impl::usrp1_impl(const device_addr_t &device_addr){
     for (size_t dspno = 0; dspno < get_num_ddcs(); dspno++){
         fs_path rx_dsp_path = mb_path / str(boost::format("rx_dsps/%u") % dspno);
         _tree->create<double>(rx_dsp_path / "rate/value")
+            .set(1e6)
             .coerce(boost::bind(&usrp1_impl::update_rx_samp_rate, this, _1));
         _tree->create<double>(rx_dsp_path / "freq/value")
             .coerce(boost::bind(&usrp1_impl::update_rx_dsp_freq, this, dspno, _1));
@@ -301,6 +302,7 @@ usrp1_impl::usrp1_impl(const device_addr_t &device_addr){
     for (size_t dspno = 0; dspno < get_num_ducs(); dspno++){
         fs_path tx_dsp_path = mb_path / str(boost::format("tx_dsps/%u") % dspno);
         _tree->create<double>(tx_dsp_path / "rate/value")
+            .set(1e6)
             .coerce(boost::bind(&usrp1_impl::update_tx_samp_rate, this, _1));
         _tree->create<double>(tx_dsp_path / "freq/value")
             .coerce(boost::bind(&usrp1_impl::update_tx_dsp_freq, this, dspno, _1));
@@ -382,14 +384,7 @@ usrp1_impl::usrp1_impl(const device_addr_t &device_addr){
     ////////////////////////////////////////////////////////////////////
     // do some post-init tasks
     ////////////////////////////////////////////////////////////////////
-    //and now that the tick rate is set, init the host rates to something
-    BOOST_FOREACH(const std::string &name, _tree->list(mb_path / "rx_dsps")){
-        _tree->access<double>(mb_path / "rx_dsps" / name / "rate" / "value").set(1e6);
-    }
-    BOOST_FOREACH(const std::string &name, _tree->list(mb_path / "tx_dsps")){
-        _tree->access<double>(mb_path / "tx_dsps" / name / "rate" / "value").set(1e6);
-    }
-
+    this->update_rates();
     if (_tree->list(mb_path / "rx_dsps").size() > 0)
         _tree->access<subdev_spec_t>(mb_path / "rx_subdev_spec").set(_rx_subdev_spec);
     if (_tree->list(mb_path / "tx_dsps").size() > 0)
diff --git a/host/lib/usrp/usrp1/usrp1_impl.hpp b/host/lib/usrp/usrp1/usrp1_impl.hpp
index 68ce31a54..7776ea8d6 100644
--- a/host/lib/usrp/usrp1/usrp1_impl.hpp
+++ b/host/lib/usrp/usrp1/usrp1_impl.hpp
@@ -55,21 +55,8 @@ public:
     ~usrp1_impl(void);
 
     //the io interface
-    size_t send(const send_buffs_type &,
-                size_t,
-                const uhd::tx_metadata_t &,
-                const uhd::io_type_t &,
-                send_mode_t, double);
-
-    size_t recv(const recv_buffs_type &,
-                size_t, uhd::rx_metadata_t &,
-                const uhd::io_type_t &,
-                recv_mode_t, double);
-
-    size_t get_max_send_samps_per_packet(void) const;
-
-    size_t get_max_recv_samps_per_packet(void) const;
-
+    uhd::rx_streamer::sptr get_rx_streamer(const uhd::streamer_args &args);
+    uhd::tx_streamer::sptr get_tx_streamer(const uhd::streamer_args &args);
     bool recv_async_msg(uhd::async_metadata_t &, double);
 
 private:
@@ -94,6 +81,10 @@ private:
 
     double _master_clock_rate; //clock rate shadow
 
+    //weak pointers to streamers for update purposes
+    boost::weak_ptr<uhd::rx_streamer> _rx_streamer;
+    boost::weak_ptr<uhd::tx_streamer> _tx_streamer;
+
     void set_mb_eeprom(const uhd::usrp::mboard_eeprom_t &);
     void set_db_eeprom(const std::string &, const std::string &, const uhd::usrp::dboard_eeprom_t &);
     double update_rx_codec_gain(const std::string &, const double); //sets A and B at once
@@ -101,6 +92,7 @@ private:
     void update_tx_subdev_spec(const uhd::usrp::subdev_spec_t &);
     double update_rx_samp_rate(const double);
     double update_tx_samp_rate(const double);
+    void update_rates(void);
     double update_rx_dsp_freq(const size_t, const double);
     double update_tx_dsp_freq(const size_t, const double);
 
@@ -119,8 +111,7 @@ private:
     void tx_stream_on_off(bool);
     void handle_overrun(size_t);
 
-    //otw types
-    uhd::otw_type_t _rx_otw_type, _tx_otw_type;
+    //channel mapping shadows
     uhd::usrp::subdev_spec_t _rx_subdev_spec, _tx_subdev_spec;
 
     //capabilities
diff --git a/host/lib/usrp/usrp2/io_impl.cpp b/host/lib/usrp/usrp2/io_impl.cpp
index 44217c36c..f271d480a 100644
--- a/host/lib/usrp/usrp2/io_impl.cpp
+++ b/host/lib/usrp/usrp2/io_impl.cpp
@@ -272,14 +272,12 @@ void usrp2_impl::update_tick_rate(const double rate){
             boost::shared_ptr<sph::recv_packet_streamer> my_streamer =
                 boost::dynamic_pointer_cast<sph::recv_packet_streamer>(_mbc[mb].rx_streamers[i].lock());
             if (my_streamer.get() == NULL) continue;
-            boost::mutex::scoped_lock lock = my_streamer->get_scoped_lock();
             my_streamer->set_tick_rate(rate);
         }
         for (size_t i = 0; i < _mbc[mb].tx_streamers.size(); i++){
             boost::shared_ptr<sph::send_packet_streamer> my_streamer =
                 boost::dynamic_pointer_cast<sph::send_packet_streamer>(_mbc[mb].tx_streamers[i].lock());
             if (my_streamer.get() == NULL) continue;
-            boost::mutex::scoped_lock lock = my_streamer->get_scoped_lock();
             my_streamer->set_tick_rate(rate);
         }
     }
@@ -290,8 +288,6 @@ void usrp2_impl::update_rx_samp_rate(const std::string &mb, const size_t dsp, co
         boost::dynamic_pointer_cast<sph::recv_packet_streamer>(_mbc[mb].rx_streamers[dsp].lock());
     if (my_streamer.get() == NULL) return;
 
-    boost::mutex::scoped_lock lock = my_streamer->get_scoped_lock();
-
     my_streamer->set_samp_rate(rate);
     const double adj = _mbc[mb].rx_dsps[dsp]->get_scaling_adjustment();
     my_streamer->set_scale_factor(adj/32767.);
@@ -302,8 +298,6 @@ void usrp2_impl::update_tx_samp_rate(const std::string &mb, const size_t dsp, co
         boost::dynamic_pointer_cast<sph::send_packet_streamer>(_mbc[mb].tx_streamers[dsp].lock());
     if (my_streamer.get() == NULL) return;
 
-    boost::mutex::scoped_lock lock = my_streamer->get_scoped_lock();
-
     my_streamer->set_samp_rate(rate);
 }