diff options
| author | Sylvain Munaut <tnt@246tNt.com> | 2014-01-25 21:25:53 +0100 |
|---|---|---|
| committer | Sylvain Munaut <tnt@246tNt.com> | 2014-01-28 20:35:31 +0100 |
| commit | 34fecff87e1ec3d34f07b0894713faff2e392cb4 (patch) | |
| tree | 9156adc7a16a9b2da875a32facf1600cef995d19 /gr-blocks/lib | |
| parent | 6f3e96cf83f57a23b8d8cc109f56391ce29c6e7b (diff) | |
blocks: Add a new rotator_cc block to perform frequency shifting
It internally uses the rotator.h helper that was already present,
which in turn makes uses of VOLK rotator kernel
Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Diffstat (limited to 'gr-blocks/lib')
| -rw-r--r-- | gr-blocks/lib/CMakeLists.txt | 1 | ||||
| -rw-r--r-- | gr-blocks/lib/rotator_cc_impl.cc | 79 | ||||
| -rw-r--r-- | gr-blocks/lib/rotator_cc_impl.h | 56 |
3 files changed, 136 insertions, 0 deletions
diff --git a/gr-blocks/lib/CMakeLists.txt b/gr-blocks/lib/CMakeLists.txt index ab6c7e95be..6ca6c1744b 100644 --- a/gr-blocks/lib/CMakeLists.txt +++ b/gr-blocks/lib/CMakeLists.txt @@ -218,6 +218,7 @@ list(APPEND gr_blocks_sources repeat_impl.cc rms_cf_impl.cc rms_ff_impl.cc + rotator_cc_impl.cc short_to_char_impl.cc short_to_float_impl.cc skiphead_impl.cc diff --git a/gr-blocks/lib/rotator_cc_impl.cc b/gr-blocks/lib/rotator_cc_impl.cc new file mode 100644 index 0000000000..3760d09c2e --- /dev/null +++ b/gr-blocks/lib/rotator_cc_impl.cc @@ -0,0 +1,79 @@ +/* -*- 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 "rotator_cc_impl.h" +#include <gnuradio/io_signature.h> + +#include <cmath> + +namespace gr { + namespace blocks { + + rotator_cc::sptr + rotator_cc::make(double phase_inc) + { + return gnuradio::get_initial_sptr + (new rotator_cc_impl(phase_inc)); + } + + rotator_cc_impl::rotator_cc_impl(double phase_inc) + : sync_block("rotator_cc", + io_signature::make(1, 1, sizeof(gr_complex)), + io_signature::make(1, 1, sizeof(gr_complex))) + { + set_phase_inc(phase_inc); + } + + rotator_cc_impl::~rotator_cc_impl() + { + } + + void + rotator_cc_impl::set_phase_inc(double phase_inc) + { + d_r.set_phase_incr( exp(gr_complex(0, phase_inc)) ); + } + + int + rotator_cc_impl::work(int noutput_items, + gr_vector_const_void_star &input_items, + gr_vector_void_star &output_items) + { + const gr_complex *in = (const gr_complex *)input_items[0]; + gr_complex *out = (gr_complex *)output_items[0]; + +#if 0 + for (int i=0; i<noutput_items; i++) + out[i] = d_r.rotate(in[i]); +#else + d_r.rotateN(out, in, noutput_items); +#endif + + return noutput_items; + } + + } /* namespace blocks */ +} /* namespace gr */ diff --git a/gr-blocks/lib/rotator_cc_impl.h b/gr-blocks/lib/rotator_cc_impl.h new file mode 100644 index 0000000000..086b207703 --- /dev/null +++ b/gr-blocks/lib/rotator_cc_impl.h @@ -0,0 +1,56 @@ +/* -*- 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. + */ + +#ifndef INCLUDED_BLOCKS_ROTATOR_CC_IMPL_H +#define INCLUDED_BLOCKS_ROTATOR_CC_IMPL_H + +#include <gnuradio/blocks/rotator_cc.h> +#include <gnuradio/blocks/rotator.h> + +namespace gr { + namespace blocks { + + /*! + * \brief Complex rotator + * \ingroup math_blk + */ + class rotator_cc_impl : public rotator_cc + { + private: + rotator d_r; + + public: + rotator_cc_impl(double phase_inc = 0.0); + ~rotator_cc_impl(); + + void set_phase_inc(double phase_inc); + + int work(int noutput_items, + gr_vector_const_void_star &input_items, + gr_vector_void_star &output_items); + + }; + + } /* namespace blocks */ +} /* namespace gr */ + +#endif /* INCLUDED_BLOCKS_ROTATOR_CC_IMPL_H */ |