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c464a63e87
* The transmit streamer gives access to the async msg queue. * The receive streamer gives access to the issue stream cmd. * Supporting usrp implementation files updated. * Example applications updated to use this API.
233 lines
9.3 KiB
C++
233 lines
9.3 KiB
C++
//
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// Copyright 2010-2012 Ettus Research LLC
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//
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#include "validate_subdev_spec.hpp"
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#include "async_packet_handler.hpp"
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#include "../../transport/super_recv_packet_handler.hpp"
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#include "../../transport/super_send_packet_handler.hpp"
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#include "e100_impl.hpp"
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#include <uhd/utils/msg.hpp>
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#include <uhd/utils/log.hpp>
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#include <uhd/utils/tasks.hpp>
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#include <boost/bind.hpp>
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#include <boost/format.hpp>
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#include <boost/make_shared.hpp>
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using namespace uhd;
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using namespace uhd::usrp;
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using namespace uhd::transport;
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static const size_t vrt_send_header_offset_words32 = 0;
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void e100_impl::update_tick_rate(const double rate){
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//update the tick rate on all existing streamers -> thread safe
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for (size_t i = 0; i < _rx_streamers.size(); i++){
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boost::shared_ptr<sph::recv_packet_streamer> my_streamer =
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boost::dynamic_pointer_cast<sph::recv_packet_streamer>(_rx_streamers[i].lock());
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if (my_streamer.get() == NULL) continue;
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my_streamer->set_tick_rate(rate);
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}
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for (size_t i = 0; i < _tx_streamers.size(); i++){
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boost::shared_ptr<sph::send_packet_streamer> my_streamer =
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boost::dynamic_pointer_cast<sph::send_packet_streamer>(_tx_streamers[i].lock());
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if (my_streamer.get() == NULL) continue;
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my_streamer->set_tick_rate(rate);
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}
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}
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void e100_impl::update_rx_samp_rate(const size_t dspno, const double rate){
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boost::shared_ptr<sph::recv_packet_streamer> my_streamer =
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boost::dynamic_pointer_cast<sph::recv_packet_streamer>(_rx_streamers[dspno].lock());
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if (my_streamer.get() == NULL) return;
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my_streamer->set_samp_rate(rate);
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const double adj = _rx_dsps[dspno]->get_scaling_adjustment();
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my_streamer->set_scale_factor(adj);
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}
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void e100_impl::update_tx_samp_rate(const size_t dspno, const double rate){
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boost::shared_ptr<sph::send_packet_streamer> my_streamer =
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boost::dynamic_pointer_cast<sph::send_packet_streamer>(_tx_streamers[dspno].lock());
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if (my_streamer.get() == NULL) return;
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my_streamer->set_samp_rate(rate);
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const double adj = _tx_dsp->get_scaling_adjustment();
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my_streamer->set_scale_factor(adj);
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}
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void e100_impl::update_rates(void){
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const fs_path mb_path = "/mboards/0";
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_tree->access<double>(mb_path / "tick_rate").update();
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//and now that the tick rate is set, init the host rates to something
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BOOST_FOREACH(const std::string &name, _tree->list(mb_path / "rx_dsps")){
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_tree->access<double>(mb_path / "rx_dsps" / name / "rate" / "value").update();
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}
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BOOST_FOREACH(const std::string &name, _tree->list(mb_path / "tx_dsps")){
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_tree->access<double>(mb_path / "tx_dsps" / name / "rate" / "value").update();
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}
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}
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void e100_impl::update_rx_subdev_spec(const uhd::usrp::subdev_spec_t &spec){
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fs_path root = "/mboards/0/dboards";
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//sanity checking
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validate_subdev_spec(_tree, spec, "rx");
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//setup mux for this spec
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bool fe_swapped = false;
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for (size_t i = 0; i < spec.size(); i++){
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const std::string conn = _tree->access<std::string>(root / spec[i].db_name / "rx_frontends" / spec[i].sd_name / "connection").get();
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if (i == 0 and (conn == "QI" or conn == "Q")) fe_swapped = true;
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_rx_dsps[i]->set_mux(conn, fe_swapped);
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}
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_rx_fe->set_mux(fe_swapped);
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}
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void e100_impl::update_tx_subdev_spec(const uhd::usrp::subdev_spec_t &spec){
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fs_path root = "/mboards/0/dboards";
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//sanity checking
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validate_subdev_spec(_tree, spec, "tx");
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//set the mux for this spec
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const std::string conn = _tree->access<std::string>(root / spec[0].db_name / "tx_frontends" / spec[0].sd_name / "connection").get();
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_tx_fe->set_mux(conn);
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}
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/***********************************************************************
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* Async Recv
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**********************************************************************/
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bool e100_impl::recv_async_msg(
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async_metadata_t &async_metadata, double timeout
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){
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return _fifo_ctrl->pop_async_msg(async_metadata, timeout);
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}
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/***********************************************************************
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* Receive streamer
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**********************************************************************/
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rx_streamer::sptr e100_impl::get_rx_stream(const uhd::stream_args_t &args_){
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stream_args_t args = args_;
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//setup defaults for unspecified values
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args.otw_format = args.otw_format.empty()? "sc16" : args.otw_format;
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args.channels = args.channels.empty()? std::vector<size_t>(1, 0) : args.channels;
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//calculate packet size
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static const size_t hdr_size = 0
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+ vrt::max_if_hdr_words32*sizeof(boost::uint32_t)
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+ sizeof(vrt::if_packet_info_t().tlr) //forced to have trailer
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- sizeof(vrt::if_packet_info_t().cid) //no class id ever used
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- sizeof(vrt::if_packet_info_t().tsi) //no int time ever used
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;
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const size_t bpp = _data_transport->get_recv_frame_size() - hdr_size;
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const size_t bpi = convert::get_bytes_per_item(args.otw_format);
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const size_t spp = unsigned(args.args.cast<double>("spp", bpp/bpi));
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//make the new streamer given the samples per packet
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boost::shared_ptr<sph::recv_packet_streamer> my_streamer = boost::make_shared<sph::recv_packet_streamer>(spp);
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//init some streamer stuff
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my_streamer->resize(args.channels.size());
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my_streamer->set_vrt_unpacker(&vrt::if_hdr_unpack_le);
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//set the converter
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uhd::convert::id_type id;
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id.input_format = args.otw_format + "_item32_le";
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id.num_inputs = 1;
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id.output_format = args.cpu_format;
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id.num_outputs = 1;
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my_streamer->set_converter(id);
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//bind callbacks for the handler
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for (size_t chan_i = 0; chan_i < args.channels.size(); chan_i++){
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const size_t dsp = args.channels[chan_i];
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_rx_dsps[dsp]->set_nsamps_per_packet(spp); //seems to be a good place to set this
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_rx_dsps[dsp]->setup(args);
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my_streamer->set_xport_chan_get_buff(chan_i, boost::bind(
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&recv_packet_demuxer::get_recv_buff, _recv_demuxer, dsp, _1
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), true /*flush*/);
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my_streamer->set_overflow_handler(chan_i, boost::bind(
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&rx_dsp_core_200::handle_overflow, _rx_dsps[dsp]
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));
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my_streamer->set_issue_stream_cmd(chan_i, boost::bind(
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&rx_dsp_core_200::issue_stream_command, _rx_dsps[dsp], _1));
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_rx_streamers[dsp] = my_streamer; //store weak pointer
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}
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//sets all tick and samp rates on this streamer
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this->update_rates();
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return my_streamer;
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}
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/***********************************************************************
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* Transmit streamer
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**********************************************************************/
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tx_streamer::sptr e100_impl::get_tx_stream(const uhd::stream_args_t &args_){
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stream_args_t args = args_;
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//setup defaults for unspecified values
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args.otw_format = args.otw_format.empty()? "sc16" : args.otw_format;
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args.channels = args.channels.empty()? std::vector<size_t>(1, 0) : args.channels;
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//calculate packet size
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static const size_t hdr_size = 0
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+ vrt_send_header_offset_words32*sizeof(boost::uint32_t)
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+ vrt::max_if_hdr_words32*sizeof(boost::uint32_t)
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+ sizeof(vrt::if_packet_info_t().tlr) //forced to have trailer
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- sizeof(vrt::if_packet_info_t().sid) //no stream id ever used
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- sizeof(vrt::if_packet_info_t().cid) //no class id ever used
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- sizeof(vrt::if_packet_info_t().tsi) //no int time ever used
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;
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static const size_t bpp = _data_transport->get_send_frame_size() - hdr_size;
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const size_t spp = bpp/convert::get_bytes_per_item(args.otw_format);
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//make the new streamer given the samples per packet
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boost::shared_ptr<sph::send_packet_streamer> my_streamer = boost::make_shared<sph::send_packet_streamer>(spp);
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//init some streamer stuff
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my_streamer->resize(args.channels.size());
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my_streamer->set_vrt_packer(&vrt::if_hdr_pack_le, vrt_send_header_offset_words32);
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//set the converter
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uhd::convert::id_type id;
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id.input_format = args.cpu_format;
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id.num_inputs = 1;
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id.output_format = args.otw_format + "_item32_le";
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id.num_outputs = 1;
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my_streamer->set_converter(id);
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//bind callbacks for the handler
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for (size_t chan_i = 0; chan_i < args.channels.size(); chan_i++){
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const size_t dsp = args.channels[chan_i];
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UHD_ASSERT_THROW(dsp == 0); //always 0
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_tx_dsp->setup(args);
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my_streamer->set_xport_chan_get_buff(chan_i, boost::bind(
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&zero_copy_if::get_send_buff, _data_transport, _1
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));
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my_streamer->set_async_receiver(boost::bind(&fifo_ctrl_excelsior::pop_async_msg, _fifo_ctrl, _1, _2));
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_tx_streamers[dsp] = my_streamer; //store weak pointer
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}
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//sets all tick and samp rates on this streamer
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this->update_rates();
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return my_streamer;
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}
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