diff options
| author | Tom Rondeau <trondeau@vt.edu> | 2013-04-17 13:43:52 -0400 |
|---|---|---|
| committer | Tom Rondeau <trondeau@vt.edu> | 2013-04-29 14:52:56 -0400 |
| commit | f3e2e07201c50033bf6c9d0c6a6f068557b4f17f (patch) | |
| tree | 140b3c2d20a951ffd4abd564c3378ee2e2f9fc7c /gr-blocks/include/gnuradio/blocks/rotator.h | |
| parent | 35303ae975a5b1bdecc2492bc96e2b8e89b62a3d (diff) | |
runtime: converting runtime core to gr namespace, gnuradio include dir.
Diffstat (limited to 'gr-blocks/include/gnuradio/blocks/rotator.h')
| -rw-r--r-- | gr-blocks/include/gnuradio/blocks/rotator.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/gr-blocks/include/gnuradio/blocks/rotator.h b/gr-blocks/include/gnuradio/blocks/rotator.h new file mode 100644 index 0000000000..975bfc62aa --- /dev/null +++ b/gr-blocks/include/gnuradio/blocks/rotator.h @@ -0,0 +1,63 @@ +/* -*- c++ -*- */ +/* + * Copyright 2003,2008,2013 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 _GR_ROTATOR_H_ +#define _GR_ROTATOR_H_ + +#include <gnuradio/blocks/api.h> +#include <gnuradio/gr_complex.h> + +namespace gr { + namespace blocks { + + class rotator + { + private: + gr_complex d_phase; + gr_complex d_phase_incr; + unsigned int d_counter; + + public: + rotator() : d_phase(1), d_phase_incr(1), d_counter(0) + { } + + void set_phase(gr_complex phase) { d_phase = phase / abs(phase); } + void set_phase_incr(gr_complex incr) { d_phase_incr = incr / abs(incr); } + + gr_complex rotate(gr_complex in) + { + d_counter++; + + gr_complex z = in * d_phase; // rotate in by phase + d_phase *= d_phase_incr; // incr our phase (complex mult == add phases) + + if((d_counter % 512) == 0) + d_phase /= abs(d_phase); // Normalize to ensure multiplication is rotation + + return z; + } + }; + + } /* namespace blocks */ +} /* namespace gr */ + +#endif /* _GR_ROTATOR_H_ */ |