diff options
| author | Tom Rondeau <tom@trondeau.com> | 2014-07-29 15:24:16 -0400 |
|---|---|---|
| committer | Tom Rondeau <tom@trondeau.com> | 2014-07-29 19:27:58 -0400 |
| commit | 89f684339d1d75617badb5f8b19c5e0e8dc9b711 (patch) | |
| tree | 81d171dc2ee039446df97c74d9440050fbecb894 /gr-blocks/lib/multiply_const_vff_impl.cc | |
| parent | bf914b6ca9b64d12c510c92a3cc6f4762639c0f8 (diff) | |
blocks: adding VOLK support for some functions.
* multipy_const_vcc and _vff
* sub_ff
* float_to_complex
* binary_slicer
Also adds a min_XX block to complement max_XX.
Diffstat (limited to 'gr-blocks/lib/multiply_const_vff_impl.cc')
| -rw-r--r-- | gr-blocks/lib/multiply_const_vff_impl.cc | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/gr-blocks/lib/multiply_const_vff_impl.cc b/gr-blocks/lib/multiply_const_vff_impl.cc new file mode 100644 index 0000000000..ab53ce3ce3 --- /dev/null +++ b/gr-blocks/lib/multiply_const_vff_impl.cc @@ -0,0 +1,72 @@ +/* -*- 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. + */ + +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include <multiply_const_vff_impl.h> +#include <gnuradio/io_signature.h> +#include <volk/volk.h> + +namespace gr { + namespace blocks { + + multiply_const_vff::sptr + multiply_const_vff::make(std::vector<float> k) + { + return gnuradio::get_initial_sptr + (new multiply_const_vff_impl(k)); + } + + multiply_const_vff_impl::multiply_const_vff_impl(std::vector<float> k) + : sync_block("multiply_const_vff", + io_signature::make(1, 1, sizeof(float)*k.size()), + io_signature::make(1, 1, sizeof(float)*k.size())), + d_k(k) + { + const int alignment_multiple = + volk_get_alignment() / sizeof(float); + set_alignment(std::max(1,alignment_multiple)); + } + + int + multiply_const_vff_impl::work(int noutput_items, + gr_vector_const_void_star &input_items, + gr_vector_void_star &output_items) + { + float *iptr = (float*)input_items[0]; + float *optr = (float*)output_items[0]; + + int nitems_per_block = output_signature()->sizeof_stream_item(0)/sizeof(float); + + for(int i = 0; i < noutput_items; i++) { + for(int j = 0; j < nitems_per_block; j++) { + *optr++ = *iptr++ * d_k[j]; + } + } + + return noutput_items; + } + + } /* namespace blocks */ +} /* namespace gr */ |