Пример #1
0
void SummaryCommand :: PrintSizes( IOManager & io, const SizeMap & sm ) {
	SizeMap::const_iterator it = sm.begin();
	while( it != sm.end() ) {
		io.Out() << it->first + 1 << ": "
				 << it->second.first << "," << it->second.second
				 << "\n";
		++it;
	}
}
Пример #2
0
template<typename samp_type> void recv_to_file(
    uhd::usrp::multi_usrp::sptr usrp,
    const std::string &cpu_format,
    const std::string &wire_format,
    const std::string &file,
    size_t samps_per_buff,
    unsigned long long num_requested_samples,
    double time_requested = 0.0,
    bool bw_summary = false,
    bool stats = false,
    bool null = false,
    bool enable_size_map = false,
    bool continue_on_bad_packet = false
){
    unsigned long long num_total_samps = 0;
    //create a receive streamer
    uhd::stream_args_t stream_args(cpu_format,wire_format);
    uhd::rx_streamer::sptr rx_stream = usrp->get_rx_stream(stream_args);

    uhd::rx_metadata_t md;
    std::vector<samp_type> buff(samps_per_buff);
    std::ofstream outfile;
    if (not null)
        outfile.open(file.c_str(), std::ofstream::binary);
    bool overflow_message = true;

    //setup streaming
    uhd::stream_cmd_t stream_cmd((num_requested_samples == 0)?
        uhd::stream_cmd_t::STREAM_MODE_START_CONTINUOUS:
        uhd::stream_cmd_t::STREAM_MODE_NUM_SAMPS_AND_DONE
    );
    stream_cmd.num_samps = num_requested_samples;
    stream_cmd.stream_now = true;
    stream_cmd.time_spec = uhd::time_spec_t();
    rx_stream->issue_stream_cmd(stream_cmd);

    boost::system_time start = boost::get_system_time();
    unsigned long long ticks_requested = (long)(time_requested * (double)boost::posix_time::time_duration::ticks_per_second());
    boost::posix_time::time_duration ticks_diff;
    boost::system_time last_update = start;
    unsigned long long last_update_samps = 0;

    typedef std::map<size_t,size_t> SizeMap;
    SizeMap mapSizes;

    while(not stop_signal_called and (num_requested_samples != num_total_samps or num_requested_samples == 0)) {
        boost::system_time now = boost::get_system_time();

        size_t num_rx_samps = rx_stream->recv(&buff.front(), buff.size(), md, 3.0, enable_size_map);

        if (md.error_code == uhd::rx_metadata_t::ERROR_CODE_TIMEOUT) {
            std::cout << boost::format("Timeout while streaming") << std::endl;
            break;
        }
        if (md.error_code == uhd::rx_metadata_t::ERROR_CODE_OVERFLOW){
            if (overflow_message) {
                overflow_message = false;
                std::cerr << boost::format(
                    "Got an overflow indication. Please consider the following:\n"
                    "  Your write medium must sustain a rate of %fMB/s.\n"
                    "  Dropped samples will not be written to the file.\n"
                    "  Please modify this example for your purposes.\n"
                    "  This message will not appear again.\n"
                ) % (usrp->get_rx_rate()*sizeof(samp_type)/1e6);
            }
            continue;
        }
        if (md.error_code != uhd::rx_metadata_t::ERROR_CODE_NONE){
            std::string error = str(boost::format("Receiver error: %s") % md.strerror());
            if (continue_on_bad_packet){
                std::cerr << error << std::endl;
                continue;
            }
            else
                throw std::runtime_error(error);
        }

        if (enable_size_map) {
            SizeMap::iterator it = mapSizes.find(num_rx_samps);
            if (it == mapSizes.end())
                mapSizes[num_rx_samps] = 0;
            mapSizes[num_rx_samps] += 1;
        }

        num_total_samps += num_rx_samps;

        if (outfile.is_open())
            outfile.write((const char*)&buff.front(), num_rx_samps*sizeof(samp_type));

        if (bw_summary) {
            last_update_samps += num_rx_samps;
            boost::posix_time::time_duration update_diff = now - last_update;
            if (update_diff.ticks() > boost::posix_time::time_duration::ticks_per_second()) {
                double t = (double)update_diff.ticks() / (double)boost::posix_time::time_duration::ticks_per_second();
                double r = (double)last_update_samps / t;
                std::cout << boost::format("\t%f Msps") % (r/1e6) << std::endl;
                last_update_samps = 0;
                last_update = now;
            }
        }

        ticks_diff = now - start;
        if (ticks_requested > 0){
            if ((unsigned long long)ticks_diff.ticks() > ticks_requested)
                break;
        }
    }

    stream_cmd.stream_mode = uhd::stream_cmd_t::STREAM_MODE_STOP_CONTINUOUS;
    rx_stream->issue_stream_cmd(stream_cmd);

    if (outfile.is_open())
        outfile.close();

    if (stats) {
        std::cout << std::endl;

        double t = (double)ticks_diff.ticks() / (double)boost::posix_time::time_duration::ticks_per_second();
        std::cout << boost::format("Received %d samples in %f seconds") % num_total_samps % t << std::endl;
        double r = (double)num_total_samps / t;
        std::cout << boost::format("%f Msps") % (r/1e6) << std::endl;

        if (enable_size_map) {
            std::cout << std::endl;
            std::cout << "Packet size map (bytes: count)" << std::endl;
            for (SizeMap::iterator it = mapSizes.begin(); it != mapSizes.end(); it++)
                std::cout << it->first << ":\t" << it->second << std::endl;
        }
    }
}
Пример #3
0
void recv_to_file(uhd::rx_streamer::sptr rx_stream,
    const std::string& file,
    const size_t samps_per_buff,
    const double rx_rate,
    const unsigned long long num_requested_samples,
    double time_requested       = 0.0,
    bool bw_summary             = false,
    bool stats                  = false,
    bool enable_size_map        = false,
    bool continue_on_bad_packet = false)
{
    unsigned long long num_total_samps = 0;

    uhd::rx_metadata_t md;
    std::vector<samp_type> buff(samps_per_buff);
    std::ofstream outfile;
    if (not file.empty()) {
        outfile.open(file.c_str(), std::ofstream::binary);
    }
    bool overflow_message = true;

    // setup streaming
    uhd::stream_cmd_t stream_cmd((num_requested_samples == 0)
                                     ? uhd::stream_cmd_t::STREAM_MODE_START_CONTINUOUS
                                     : uhd::stream_cmd_t::STREAM_MODE_NUM_SAMPS_AND_DONE);
    stream_cmd.num_samps  = size_t(num_requested_samples);
    stream_cmd.stream_now = true;
    stream_cmd.time_spec  = uhd::time_spec_t();
    std::cout << "Issuing stream cmd" << std::endl;
    rx_stream->issue_stream_cmd(stream_cmd);

    const auto start_time = std::chrono::steady_clock::now();
    const auto stop_time =
        start_time + std::chrono::milliseconds(int64_t(1000 * time_requested));
    // Track time and samps between updating the BW summary
    auto last_update                     = start_time;
    unsigned long long last_update_samps = 0;

    typedef std::map<size_t, size_t> SizeMap;
    SizeMap mapSizes;

    // Run this loop until either time expired (if a duration was given), until
    // the requested number of samples were collected (if such a number was
    // given), or until Ctrl-C was pressed.
    while (not stop_signal_called
           and (num_requested_samples != num_total_samps or num_requested_samples == 0)
           and (time_requested == 0.0 or std::chrono::steady_clock::now() <= stop_time)) {
        const auto now = std::chrono::steady_clock::now();

        size_t num_rx_samps =
            rx_stream->recv(&buff.front(), buff.size(), md, 3.0, enable_size_map);

        if (md.error_code == uhd::rx_metadata_t::ERROR_CODE_TIMEOUT) {
            std::cout << boost::format("Timeout while streaming") << std::endl;
            break;
        }
        if (md.error_code == uhd::rx_metadata_t::ERROR_CODE_OVERFLOW) {
            if (overflow_message) {
                overflow_message = false;
                std::cerr
                    << boost::format(
                           "Got an overflow indication. Please consider the following:\n"
                           "  Your write medium must sustain a rate of %fMB/s.\n"
                           "  Dropped samples will not be written to the file.\n"
                           "  Please modify this example for your purposes.\n"
                           "  This message will not appear again.\n")
                           % (rx_rate * sizeof(samp_type) / 1e6);
            }
            continue;
        }
        if (md.error_code != uhd::rx_metadata_t::ERROR_CODE_NONE) {
            std::string error = str(boost::format("Receiver error: %s") % md.strerror());
            if (continue_on_bad_packet) {
                std::cerr << error << std::endl;
                continue;
            } else
                throw std::runtime_error(error);
        }

        if (enable_size_map) {
            SizeMap::iterator it = mapSizes.find(num_rx_samps);
            if (it == mapSizes.end())
                mapSizes[num_rx_samps] = 0;
            mapSizes[num_rx_samps] += 1;
        }

        num_total_samps += num_rx_samps;

        if (outfile.is_open()) {
            outfile.write((const char*)&buff.front(), num_rx_samps * sizeof(samp_type));
        }

        if (bw_summary) {
            last_update_samps += num_rx_samps;
            const auto time_since_last_update = now - last_update;
            if (time_since_last_update > std::chrono::seconds(UPDATE_INTERVAL)) {
                const double time_since_last_update_s =
                    std::chrono::duration<double>(time_since_last_update).count();
                const double rate = double(last_update_samps) / time_since_last_update_s;
                std::cout << "\t" << (rate / 1e6) << " MSps" << std::endl;
                last_update_samps = 0;
                last_update       = now;
            }
        }
    }
    const auto actual_stop_time = std::chrono::steady_clock::now();

    stream_cmd.stream_mode = uhd::stream_cmd_t::STREAM_MODE_STOP_CONTINUOUS;
    std::cout << "Issuing stop stream cmd" << std::endl;
    rx_stream->issue_stream_cmd(stream_cmd);

    // Run recv until nothing is left
    int num_post_samps = 0;
    do {
        num_post_samps = rx_stream->recv(&buff.front(), buff.size(), md, 3.0);
    } while (num_post_samps and md.error_code == uhd::rx_metadata_t::ERROR_CODE_NONE);

    if (outfile.is_open())
        outfile.close();

    if (stats) {
        std::cout << std::endl;

        const double actual_duration_seconds =
            std::chrono::duration<float>(actual_stop_time - start_time).count();

        std::cout << boost::format("Received %d samples in %f seconds") % num_total_samps
                         % actual_duration_seconds
                  << std::endl;
        const double rate = (double)num_total_samps / actual_duration_seconds;
        std::cout << (rate / 1e6) << " MSps" << std::endl;

        if (enable_size_map) {
            std::cout << std::endl;
            std::cout << "Packet size map (bytes: count)" << std::endl;
            for (SizeMap::iterator it = mapSizes.begin(); it != mapSizes.end(); it++)
                std::cout << it->first << ":\t" << it->second << std::endl;
        }
    }
}