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/* -*- c++ -*- */
/*
* Copyright 2014 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <gnuradio/blocks/unpack_k_bits.h>
#include <gnuradio/io_signature.h>
#include <stdexcept>
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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