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/* -*- c++ -*- */
/*
* Copyright 2004,2008,2009 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 <usrp_sink_base.h>
#include <gr_io_signature.h>
#include <usrp/usrp_standard.h>
#include <assert.h>
#include <cstdio>
static const int OUTPUT_MULTIPLE_SAMPLES = 128; // DON'T CHANGE THIS VALUE!
usrp_sink_base::usrp_sink_base (const std::string &name,
gr_io_signature_sptr input_signature,
int which_board,
unsigned int interp_rate,
int nchan,
int mux,
int fusb_block_size,
int fusb_nblocks,
const std::string fpga_filename,
const std::string firmware_filename
) throw (std::runtime_error)
: usrp_base(name,
input_signature,
gr_make_io_signature (0, 0, 0)),
d_nunderruns (0)
{
d_usrp = usrp_standard_tx::make (which_board,
interp_rate,
nchan, mux,
fusb_block_size,
fusb_nblocks,
fpga_filename,
firmware_filename
);
if (d_usrp == 0)
throw std::runtime_error ("can't open usrp");
set_usrp_basic(d_usrp);
// All calls to d_usrp->write must be multiples of 512 bytes.
set_output_multiple (OUTPUT_MULTIPLE_SAMPLES);
}
usrp_sink_base::~usrp_sink_base ()
{
}
int
usrp_sink_base::work (int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
{
static const int BUFSIZE = 16 * (1L << 10); // 16kB
unsigned char outbuf[BUFSIZE];
int obi = 0;
int input_index = 0;
int input_items_consumed;
int bytes_written;
bool underrun;
while (input_index < noutput_items){
copy_to_usrp_buffer (input_items,
input_index,
noutput_items - input_index, // input_items_available
input_items_consumed, // [out]
&outbuf[obi], // [out] usrp_buffer
BUFSIZE - obi, // usrp_buffer_length
bytes_written); // [out]
assert (input_index + input_items_consumed <= noutput_items);
assert (obi + bytes_written <= BUFSIZE);
input_index += input_items_consumed;
obi += bytes_written;
if (obi >= BUFSIZE){ // flush
if (d_usrp->write (outbuf, obi, &underrun) != obi)
return -1; // indicate we're done
if (underrun){
d_nunderruns++;
// fprintf (stderr, "usrp_sink: underrun\n");
fputs ("uU", stderr);
}
obi = 0;
}
}
if (obi != 0){
assert (obi % 512 == 0);
if (d_usrp->write (outbuf, obi, &underrun) != obi)
return -1; // indicate we're done
if (underrun){
d_nunderruns++;
// fprintf (stderr, "usrp_sink: underrun\n");
fputs ("uU", stderr);
}
}
return noutput_items;
}
bool
usrp_sink_base::set_interp_rate (unsigned int rate)
{
return d_usrp->set_interp_rate (rate);
}
bool
usrp_sink_base::set_nchannels (int nchan)
{
return d_usrp->set_nchannels (nchan);
}
bool
usrp_sink_base::set_mux (int mux)
{
return d_usrp->set_mux (mux);
}
int
usrp_sink_base::determine_tx_mux_value(usrp_subdev_spec ss)
{
return d_usrp->determine_tx_mux_value(ss);
}
int
usrp_sink_base::determine_tx_mux_value(usrp_subdev_spec ss_a, usrp_subdev_spec ss_b)
{
return d_usrp->determine_tx_mux_value(ss_a, ss_b);
}
bool
usrp_sink_base::set_tx_freq (int channel, double freq)
{
return d_usrp->set_tx_freq (channel, freq);
}
unsigned int
usrp_sink_base::interp_rate () const
{
return d_usrp->interp_rate ();
}
int
usrp_sink_base::nchannels () const
{
return d_usrp->nchannels ();
}
int
usrp_sink_base::mux () const
{
return d_usrp->mux ();
}
double
usrp_sink_base::tx_freq (int channel) const
{
return d_usrp->tx_freq (channel);
}
bool
usrp_sink_base::has_rx_halfband()
{
return d_usrp->has_rx_halfband();
}
bool
usrp_sink_base::has_tx_halfband()
{
return d_usrp->has_tx_halfband();
}
int
usrp_sink_base::nddcs()
{
return d_usrp->nddcs();
}
int
usrp_sink_base::nducs()
{
return d_usrp->nducs();
}
bool
usrp_sink_base::start()
{
return d_usrp->start();
}
bool
usrp_sink_base::stop()
{
return d_usrp->stop();
}
bool
usrp_sink_base::tune(int chan, db_base_sptr db, double target_freq, usrp_tune_result *result)
{
return d_usrp->tune(chan, db, target_freq, result);
}
usrp_subdev_spec
usrp_sink_base::pick_tx_subdevice()
{
int dbids[] = {
USRP_DBID_FLEX_400_TX,
USRP_DBID_FLEX_900_TX,
USRP_DBID_FLEX_1200_TX,
USRP_DBID_FLEX_2400_TX,
USRP_DBID_BASIC_TX
};
std::vector<int> candidates(dbids, dbids+(sizeof(dbids)/sizeof(int)));
return pick_subdev(candidates);
}
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