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| author | Marcus Müller <marcus@hostalia.de> | 2018-08-31 23:02:22 +0200 |
|---|---|---|
| committer | Marcus Müller <marcus@hostalia.de> | 2018-08-31 23:02:22 +0200 |
| commit | 254fe5e89403d4de1fa6663d09efdf946996aff3 (patch) | |
| tree | 62877d7ac7fdedf6c397c51e22ac6f97eba97ddf /gr-analog/include/gnuradio/analog/fastnoise_source.h | |
| parent | 896d1c9da31963ecf5b0d90942c2af51ca998a69 (diff) | |
| parent | 5ad935c3a3dd46ce2860b13e2b774e4841784616 (diff) | |
Merge remote-tracking branch 'origin/next' into merge_next
Diffstat (limited to 'gr-analog/include/gnuradio/analog/fastnoise_source.h')
| -rw-r--r-- | gr-analog/include/gnuradio/analog/fastnoise_source.h | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/gr-analog/include/gnuradio/analog/fastnoise_source.h b/gr-analog/include/gnuradio/analog/fastnoise_source.h new file mode 100644 index 0000000000..28cb21b4ca --- /dev/null +++ b/gr-analog/include/gnuradio/analog/fastnoise_source.h @@ -0,0 +1,94 @@ +/* -*- c++ -*- */ +/* + * Copyright 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 FASTNOISE_SOURCE_H +#define FASTNOISE_SOURCE_H + +#include <gnuradio/analog/api.h> +#include <gnuradio/analog/noise_type.h> +#include <gnuradio/sync_block.h> +#include <vector> +#include <cstdint> + +namespace gr { + namespace analog { + + /*! + * \brief Random number source + * \ingroup source_blk + * + * \details + * Generate random values from different distributions. + * Currently, only Gaussian and uniform are enabled. + */ +template<class T> + class ANALOG_API fastnoise_source : virtual public sync_block + { + public: + // gr::analog::fastnoise_source::sptr + typedef boost::shared_ptr< fastnoise_source<T> > sptr; + + /*! \brief Make a fast noise source + * \param type the random distribution to use (see + * gnuradio/analog/noise_type.h) + * \param ampl the standard deviation of a 1-d noise process. If + * this is the complex source, this parameter is split + * among the real and imaginary parts: + * <pre>(ampl/sqrt(2))x + j(ampl/sqrt(2))y</pre> + * \param seed seed for random generators. Note that for uniform + * and Gaussian distributions, this should be a negative + * number. + * \param samples Number of samples to pre-generate + */ + static sptr make(noise_type_t type, float ampl, + long seed = 0, long samples=1024*16); + virtual T sample() = 0; + virtual T sample_unbiased() = 0; + virtual const std::vector<T>& samples() const = 0; + + /*! + * Set the noise type. Nominally from the + * gr::analog::noise_type_t selections, but only GR_GAUSSIAN and + * GR_UNIFORM are currently available. + */ + virtual void set_type(noise_type_t type) = 0; + + /*! + * Set the standard deviation (amplitude) of the 1-d noise + * process. + */ + virtual void set_amplitude(float ampl) = 0; + + virtual noise_type_t type() const = 0; + virtual float amplitude() const = 0; + }; + + typedef fastnoise_source<float> fastnoise_source_f; + typedef fastnoise_source<std::int32_t> fastnoise_source_i; + typedef fastnoise_source<std::int16_t> fastnoise_source_s; + typedef fastnoise_source<gr_complex> fastnoise_source_c; + } /* namespace analog */ +} /* namespace gr */ + + +#endif /* FASTNOISE_SOURCE_H */ |