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/* -*- c++ -*- */
/*
* Copyright 2008 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* GNU Radio is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3, or (at your option)
* any later version.
*
* GNU Radio is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Radio; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <usrp2_sink_16sc.h>
#include <usrp2/metadata.h>
#include <gr_io_signature.h>
#include <iostream>
// FIXME hack until VRT replaces libusrp2
#define U2_MIN_SAMPLES 9
usrp2_sink_16sc_sptr
usrp2_make_sink_16sc(const std::string &ifc, const std::string &mac_addr)
throw (std::runtime_error)
{
return gnuradio::get_initial_sptr(new usrp2_sink_16sc(ifc, mac_addr));
}
usrp2_sink_16sc::usrp2_sink_16sc(const std::string &ifc, const std::string &mac_addr)
throw (std::runtime_error)
: usrp2_sink_base("usrp2_sink_16sc",
gr_make_io_signature(1, 1, sizeof(std::complex<int16_t>)),
ifc, mac_addr)
{
// NOP
}
usrp2_sink_16sc::~usrp2_sink_16sc()
{
// NOP
}
int
usrp2_sink_16sc::work(int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
{
std::complex<int16_t> *in = (std::complex<int16_t> *)input_items[0];
// FIXME: Current libusrp2 can't handle short packets.
// Returning 0 assumes there will be more samples
// the next round...
if (noutput_items < U2_MIN_SAMPLES)
return 0;
usrp2::tx_metadata metadata;
// Set TX metadata to either start time or now
if (d_should_wait == true) {
metadata.timestamp = d_tx_time;
metadata.send_now = 0;
d_should_wait = false;
}
else {
metadata.timestamp = -1;
metadata.send_now = 1;
}
metadata.start_of_burst = 1;
bool ok = d_u2->tx_16sc(0, in, noutput_items, &metadata);
if (!ok){
std::cerr << "usrp2_sink_16sc: tx_16sc failed" << std::endl;
return -1; // say we're done
}
return noutput_items;
}
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