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/* -*- c++ -*- */
/*
* Copyright 2014 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.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <gnuradio/blocks/unpack_k_bits.h>
#include <gnuradio/io_signature.h>
#include <stdexcept>
#include <iostream>
namespace gr {
namespace blocks {
namespace kernel {
unpack_k_bits::unpack_k_bits(unsigned k)
: d_k(k)
{
if(d_k == 0)
throw std::out_of_range("unpack_k_bits: k must be > 0");
}
unpack_k_bits::~unpack_k_bits()
{
}
void
unpack_k_bits::unpack(unsigned char *bits, const unsigned char *bytes, int nbytes) const
{
int n = 0;
for(int i = 0; i < nbytes; i++) {
unsigned int t = bytes[i];
for(int j = d_k - 1; j >= 0; j--)
bits[n++] = (t >> j) & 0x01;
}
}
void
unpack_k_bits::unpack_rev(unsigned char *bits, const unsigned char *bytes, int nbytes) const
{
int n = 0;
for(int i = 0; i < nbytes; i++) {
unsigned int t = bytes[i];
for(unsigned int j = 0; j < d_k; j++)
bits[n++] = (t >> j) & 0x01;
}
}
int
unpack_k_bits::k() const
{
return d_k;
}
} /* namespace kernel */
} /* namespace blocks */
} /* namespace gr */
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