From aa844b050d5b658ab8d6961a3678251b65db7ce7 Mon Sep 17 00:00:00 2001
From: Andrej Rode <mail@andrejro.de>
Date: Sun, 19 Aug 2018 21:17:28 +0200
Subject: analog: replace gengen with C++ templates
---
gr-analog/lib/fastnoise_source_impl.cc | 191 +++++++++++++++++++++++++++++++++
1 file changed, 191 insertions(+)
create mode 100644 gr-analog/lib/fastnoise_source_impl.cc
(limited to 'gr-analog/lib/fastnoise_source_impl.cc')
diff --git a/gr-analog/lib/fastnoise_source_impl.cc b/gr-analog/lib/fastnoise_source_impl.cc
new file mode 100644
index 0000000000..ef85586b98
--- /dev/null
+++ b/gr-analog/lib/fastnoise_source_impl.cc
@@ -0,0 +1,191 @@
+/* -*- 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.
+ */
+
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "fastnoise_source_impl.h"
+#include <gnuradio/io_signature.h>
+#include <stdexcept>
+
+namespace gr {
+namespace analog {
+
+template <class T>
+typename fastnoise_source<T>::sptr
+fastnoise_source<T>::make(noise_type_t type, float ampl, long seed, long samples) {
+ return gnuradio::get_initial_sptr(new fastnoise_source_impl<T>(type, ampl, seed, samples));
+}
+
+ template <>
+ void fastnoise_source_impl<gr_complex>::generate() {
+ int noutput_items = d_samples.size();
+ switch (d_type) {
+ case GR_UNIFORM:
+ for (int i = 0; i < noutput_items; i++)
+ d_samples[i] = gr_complex(d_ampl * ((d_rng.ran1() * 2.0) - 1.0),
+ d_ampl * ((d_rng.ran1() * 2.0) - 1.0));
+ break;
+
+ case GR_GAUSSIAN:
+ for (int i = 0; i < noutput_items; i++)
+ d_samples[i] = d_ampl * d_rng.rayleigh_complex();
+ break;
+ default:
+ throw std::runtime_error("invalid type");
+ }
+ }
+
+template <class T>
+fastnoise_source_impl<T>::fastnoise_source_impl(noise_type_t type,
+ float ampl,
+ long seed,
+ long samples)
+ : sync_block(
+ "fastnoise_source", io_signature::make(0, 0, 0), io_signature::make(1, 1, sizeof(T))),
+ d_type(type), d_ampl(ampl), d_rng(seed) {
+ d_samples.resize(samples);
+ generate();
+}
+
+
+template <>
+fastnoise_source_impl<gr_complex>::fastnoise_source_impl(noise_type_t type,
+ float ampl,
+ long seed,
+ long samples)
+ : sync_block("fastnoise_source",
+ io_signature::make(0, 0, 0),
+ io_signature::make(1, 1, sizeof(gr_complex))),
+ d_type(type), d_ampl(ampl / sqrtf(2.0f)), d_rng(seed) {
+ d_samples.resize(samples);
+ generate();
+}
+
+template <class T>
+fastnoise_source_impl<T>::~fastnoise_source_impl() {}
+
+template <class T>
+void fastnoise_source_impl<T>::set_type(noise_type_t type) {
+ gr::thread::scoped_lock l(this->d_setlock);
+ d_type = type;
+ generate();
+}
+
+template <class T>
+void fastnoise_source_impl<T>::set_amplitude(float ampl) {
+ gr::thread::scoped_lock l(this->d_setlock);
+ d_ampl = ampl;
+ generate();
+}
+
+template <>
+void fastnoise_source_impl<gr_complex>::set_amplitude(float ampl) {
+ gr::thread::scoped_lock l(this->d_setlock);
+ d_ampl = ampl / sqrtf(2.0f);
+ generate();
+}
+
+
+template <class T>
+void fastnoise_source_impl<T>::generate() {
+ int noutput_items = d_samples.size();
+ switch (d_type) {
+ case GR_UNIFORM:
+ for (int i = 0; i < noutput_items; i++)
+ d_samples[i] = (T)(d_ampl * ((d_rng.ran1() * 2.0) - 1.0));
+ break;
+
+ case GR_GAUSSIAN:
+ for (int i = 0; i < noutput_items; i++)
+ d_samples[i] = (T)(d_ampl * d_rng.gasdev());
+ break;
+
+ case GR_LAPLACIAN:
+ for (int i = 0; i < noutput_items; i++)
+ d_samples[i] = (T)(d_ampl * d_rng.laplacian());
+ break;
+
+ case GR_IMPULSE: // FIXME changeable impulse settings
+ for (int i = 0; i < noutput_items; i++)
+ d_samples[i] = (T)(d_ampl * d_rng.impulse(9));
+ break;
+ default:
+ throw std::runtime_error("invalid type");
+ }
+}
+
+
+
+template <class T>
+int fastnoise_source_impl<T>::work(int noutput_items,
+ gr_vector_const_void_star& input_items,
+ gr_vector_void_star& output_items) {
+ gr::thread::scoped_lock l(this->d_setlock);
+
+ T* out = (T*)output_items[0];
+
+ for (int i = 0; i < noutput_items; i++) {
+ out[i] = sample();
+ }
+
+ return noutput_items;
+}
+
+template <class T>
+T fastnoise_source_impl<T>::sample() {
+#ifdef HAVE_RAND48
+ size_t idx = lrand48() % d_samples.size();
+#else
+ size_t idx = rand() % d_samples.size();
+#endif
+ return d_samples[idx];
+}
+
+#ifndef FASTNOISE_RANDOM_SIGN
+#ifndef HAVE_RAND48
+#define FASTNOISE_RANDOM_SIGN ((rand() % 2 == 0) ? 1 : -1)
+#else
+#define FASTNOISE_RANDOM_SIGN ((lrand48() % 2 == 0) ? 1 : -1)
+#endif
+#endif
+
+template <class T>
+T fastnoise_source_impl<T>::sample_unbiased() {
+ return FASTNOISE_RANDOM_SIGN * sample();
+}
+
+template <>
+gr_complex fastnoise_source_impl<gr_complex>::sample_unbiased() {
+ gr_complex s(sample());
+ return gr_complex(FASTNOISE_RANDOM_SIGN * s.real(), FASTNOISE_RANDOM_SIGN * s.imag());
+}
+
+
+template class fastnoise_source<std::int16_t>;
+template class fastnoise_source<std::int32_t>;
+template class fastnoise_source<float>;
+template class fastnoise_source<gr_complex>;
+} /* namespace analog */
+} /* namespace gr */
--
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