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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
#define MSDD_DEBUG2_TRUE
#ifdef MSDD_DEBUG2_TRUE
#include <iostream>
#define MSDD_DEBUG2(x) std::cout << x << std::endl;
#else
#define MSDD_DEBUG2(x)
#endif
#include <msdd_source_s.h>
#include <gr_io_signature.h>
namespace {
static const int NBASIC_SAMPLES_PER_ITEM = 1;
}
msdd_source_s_sptr
msdd_make_source_s (int which_board,
unsigned int decim_rate,
unsigned int fft_points,
double initial_rx_freq,
int opp_mode,
const char *src,
unsigned short port_src
) throw (std::runtime_error)
{
return msdd_source_s_sptr (new msdd_source_s (which_board,
decim_rate,
fft_points,
initial_rx_freq,
opp_mode,
src,
port_src
));
}
msdd_source_s::msdd_source_s (int which_board,
unsigned int decim_rate,
unsigned int fft_points,
double initial_rx_freq,
int opp_mode,
const char *src,
unsigned short port_src
) throw (std::runtime_error)
: msdd_source_base ("msdd_source_s",
gr_make_io_signature (1, 1, sizeof (int)),
which_board, opp_mode, src, port_src
)
{
switch (sizeof_basic_sample()) {
case 1:
d_buffer_copy_behavior.reset(
new msdd::BufferCopyBehaviorGeneric<short, unsigned char>());
break;
case 2:
d_buffer_copy_behavior.reset(
new msdd::BufferCopyBehaviorGeneric<short, float>());
break;
case 4:
d_buffer_copy_behavior.reset(
new msdd::BufferCopyBehaviorGeneric<short, int>());
break;
default:
assert(false);
}
}
msdd_source_s::~msdd_source_s ()
{
}
int
msdd_source_s::ninput_bytes_reqd_for_noutput_items (int noutput_items)
{
return noutput_items * NBASIC_SAMPLES_PER_ITEM * sizeof_basic_sample();
}
void
msdd_source_s::copy_from_msdd_buffer (gr_vector_void_star &output_items,
int output_index,
int output_items_available,
int &output_items_produced,
const void *msdd_buffer,
int buffer_length,
int &bytes_read)
{
MSDD_DEBUG2("copy_from_msdd_buffer: output_index: " << output_index << " output_items_available: " << output_items_available << " buflen: " << buffer_length)
unsigned nmsdd_bytes_per_item
(msdd_source_s::ninput_bytes_reqd_for_noutput_items(1));
unsigned int nitems = std::min (output_items_available,
(int)(buffer_length / nmsdd_bytes_per_item));
MSDD_DEBUG2("copy_from_msdd_buffer: nmsdd_bytes_per_item: " << nmsdd_bytes_per_item << " nitems: " << nitems)
(*d_buffer_copy_behavior.get())(output_items, msdd_buffer, output_index, nitems);
output_items_produced = nitems;
bytes_read = nitems * nmsdd_bytes_per_item;
}
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