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/* -*- c++ -*- */
/*
* Copyright 2004,2006 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 <usrp1_sink_s.h>
#include <gr_io_signature.h>
#include <usrp_standard.h>
#include <usrp_bytesex.h>
usrp1_sink_s_sptr
usrp1_make_sink_s (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)
{
return usrp1_sink_s_sptr (new usrp1_sink_s (which_board,
interp_rate,
nchan,
mux,
fusb_block_size,
fusb_nblocks,
fpga_filename,
firmware_filename
));
}
usrp1_sink_s::usrp1_sink_s (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)
: usrp1_sink_base ("usrp1_sink_s",
gr_make_io_signature (1, 1, sizeof (short)),
which_board, interp_rate, nchan, mux,
fusb_block_size, fusb_nblocks,
fpga_filename, firmware_filename)
{
set_output_multiple (512 / sizeof(short)); // don't change
}
usrp1_sink_s::~usrp1_sink_s ()
{
// NOP
}
/*
* Take one short input stream and format it into interleaved short I & Q
* for the usrp.
*/
void
usrp1_sink_s::copy_to_usrp_buffer (gr_vector_const_void_star &input_items,
int input_index,
int input_items_available,
int &input_items_consumed, // out
void *usrp_buffer,
int usrp_buffer_length,
int &bytes_written) // out
{
short *in = &((short *) input_items[0])[input_index];
short *dst = (short *) usrp_buffer;
static const int usrp_bytes_per_input_item = sizeof (short);
int nitems = std::min (input_items_available,
usrp_buffer_length / usrp_bytes_per_input_item);
for (int i = 0; i < nitems; i++){ // FIXME unroll
dst[i] = host_to_usrp_short(in[i]);
}
input_items_consumed = nitems;
bytes_written = nitems * usrp_bytes_per_input_item;
}
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