diff options
| author | Andrej Rode <mail@andrejro.de> | 2018-02-22 13:28:01 +0100 |
|---|---|---|
| committer | Andrej Rode <mail@andrejro.de> | 2018-08-25 20:21:23 +0200 |
| commit | 1043222e0de551f00683a1cc9060f194adc4fc85 (patch) | |
| tree | 663d4157d907f391cbe8934d4c131b981f350ae3 /gr-blocks/include/gnuradio/blocks/peak_detector.h | |
| parent | aa844b050d5b658ab8d6961a3678251b65db7ce7 (diff) | |
blocks: replace gengen with C++ templates
Diffstat (limited to 'gr-blocks/include/gnuradio/blocks/peak_detector.h')
| -rw-r--r-- | gr-blocks/include/gnuradio/blocks/peak_detector.h | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/gr-blocks/include/gnuradio/blocks/peak_detector.h b/gr-blocks/include/gnuradio/blocks/peak_detector.h new file mode 100644 index 0000000000..4cc7dbd627 --- /dev/null +++ b/gr-blocks/include/gnuradio/blocks/peak_detector.h @@ -0,0 +1,121 @@ +/* -*- c++ -*- */ +/* + * Copyright 2007,2013,2018 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 PEAK_DETECTOR_H +#define PEAK_DETECTOR_H + +#include <gnuradio/blocks/api.h> +#include <gnuradio/sync_block.h> +#include <cstdint> + +namespace gr { + namespace blocks { + + /*! + * \brief Detect the peak of a signal + * \ingroup peak_detectors_blk + * + * \details + * If a peak is detected, this block outputs a 1, + * or it outputs 0's. + */ + template <class T> + class BLOCKS_API peak_detector : virtual public sync_block + { + public: + typedef boost::shared_ptr< peak_detector<T> > sptr; + + /*! + * Make a peak detector block. + * + * \param threshold_factor_rise The threshold factor determines + * when a peak has started. An average of the signal is + * calculated and when the value of the signal goes over + * threshold_factor_rise*average, we start looking for a + * peak. + * \param threshold_factor_fall The threshold factor determines + * when a peak has ended. An average of the signal is + * calculated and when the value of the signal goes + * below threshold_factor_fall*average, we stop looking + * for a peak. + * \param look_ahead The look-ahead value is used when the + * threshold is found to look if there another peak + * within this step range. If there is a larger value, + * we set that as the peak and look ahead again. This is + * continued until the highest point is found with This + * look-ahead range. + * \param alpha The gain value of a moving average filter + */ + static sptr make(float threshold_factor_rise = 0.25, + float threshold_factor_fall = 0.40, + int look_ahead = 10, + float alpha = 0.001); + + /*! \brief Set the threshold factor value for the rise time + * \param thr new threshold factor + */ + virtual void set_threshold_factor_rise(float thr) = 0; + + /*! \brief Set the threshold factor value for the fall time + * \param thr new threshold factor + */ + virtual void set_threshold_factor_fall(float thr) = 0; + + /*! \brief Set the look-ahead factor + * \param look new look-ahead factor + */ + virtual void set_look_ahead(int look) = 0; + + /*! \brief Set the running average alpha + * \param alpha new alpha for running average + */ + virtual void set_alpha(float alpha) = 0; + + /*! \brief Get the threshold factor value for the rise time + * \return threshold factor + */ + virtual float threshold_factor_rise() = 0; + + /*! \brief Get the threshold factor value for the fall time + * \return threshold factor + */ + virtual float threshold_factor_fall() = 0; + + /*! \brief Get the look-ahead factor value + * \return look-ahead factor + */ + virtual int look_ahead() = 0; + + /*! \brief Get the alpha value of the running average + * \return alpha + */ + virtual float alpha() = 0; + }; + + typedef peak_detector<float> peak_detector_fb; + typedef peak_detector<std::int32_t> peak_detector_ib; + typedef peak_detector<std::int16_t> peak_detector_sb; + + } /* namespace blocks */ +} /* namespace gr */ + +#endif /* PEAK_DETECTOR_H */ |