diff options
| author | Tom Rondeau <tom@trondeau.com> | 2014-05-16 12:17:25 -0400 |
|---|---|---|
| committer | Tom Rondeau <tom@trondeau.com> | 2014-05-17 17:45:16 -0400 |
| commit | 0db24ffd533cc4b0e22f82c5d6a4713892bb5ef7 (patch) | |
| tree | 8d5166be35b9f947825900a8d5ecf2055b0e6eb3 /gr-blocks/lib/unpack_k_bits.cc | |
| parent | f23b3106cd2c73be3708c29dc85afb37298d4731 (diff) | |
blocks: adds kernels for pack_k_bits and unpack_k_bits.
Diffstat (limited to 'gr-blocks/lib/unpack_k_bits.cc')
| -rw-r--r-- | gr-blocks/lib/unpack_k_bits.cc | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/gr-blocks/lib/unpack_k_bits.cc b/gr-blocks/lib/unpack_k_bits.cc new file mode 100644 index 0000000000..f274cf5b60 --- /dev/null +++ b/gr-blocks/lib/unpack_k_bits.cc @@ -0,0 +1,66 @@ +/* -*- 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; + } + } + + int + unpack_k_bits::k() const + { + return d_k; + } + + } /* namespace kernel */ + } /* namespace blocks */ +} /* namespace gr */ |