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/noise_source_impl.cc | 150 +++++++++++++++++++++++++++++++++++++
1 file changed, 150 insertions(+)
create mode 100644 gr-analog/lib/noise_source_impl.cc
(limited to 'gr-analog/lib/noise_source_impl.cc')
diff --git a/gr-analog/lib/noise_source_impl.cc b/gr-analog/lib/noise_source_impl.cc
new file mode 100644
index 0000000000..a3dd2c20c9
--- /dev/null
+++ b/gr-analog/lib/noise_source_impl.cc
@@ -0,0 +1,150 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2004,2010,2012,2018 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 "noise_source_impl.h"
+#include <gnuradio/io_signature.h>
+#include <stdexcept>
+
+namespace gr {
+namespace analog {
+
+template <class T>
+typename noise_source<T>::sptr noise_source<T>::make(noise_type_t type, float ampl, long seed) {
+ return gnuradio::get_initial_sptr(new noise_source_impl<T>(type, ampl, seed));
+}
+
+template <class T>
+noise_source_impl<T>::noise_source_impl(noise_type_t type, float ampl, long seed)
+ : sync_block("noise_source", io_signature::make(0, 0, 0), io_signature::make(1, 1, sizeof(T))),
+ d_type(type), d_ampl(ampl), d_rng(seed) {}
+
+template <>
+noise_source_impl<gr_complex>::noise_source_impl(noise_type_t type, float ampl, long seed)
+ : sync_block("noise_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) {}
+
+
+template <class T>
+noise_source_impl<T>::~noise_source_impl<T>() {}
+
+template <class T>
+void noise_source_impl<T>::set_type(noise_type_t type) {
+ gr::thread::scoped_lock l(this->d_setlock);
+ d_type = type;
+}
+
+template <class T>
+void noise_source_impl<T>::set_amplitude(float ampl) {
+ gr::thread::scoped_lock l(this->d_setlock);
+ d_ampl = ampl;
+}
+
+template <>
+void noise_source_impl<gr_complex>::set_amplitude(float ampl) {
+ gr::thread::scoped_lock l(this->d_setlock);
+ d_ampl = ampl / sqrtf(2.0f);
+}
+
+
+template <class T>
+int noise_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];
+
+ switch (d_type) {
+ case GR_UNIFORM:
+ for (int i = 0; i < noutput_items; i++) {
+ out[i] = (T)(d_ampl * ((d_rng.ran1() * 2.0) - 1.0));
+ }
+ break;
+
+ case GR_GAUSSIAN:
+ for (int i = 0; i < noutput_items; i++) {
+ out[i] = (T)(d_ampl * d_rng.gasdev());
+ }
+ break;
+
+ case GR_LAPLACIAN:
+ for (int i = 0; i < noutput_items; i++) {
+ out[i] = (T)(d_ampl * d_rng.laplacian());
+ }
+ break;
+
+ case GR_IMPULSE: // FIXME changeable impulse settings
+ for (int i = 0; i < noutput_items; i++) {
+ out[i] = (T)(d_ampl * d_rng.impulse(9));
+ }
+ break;
+ default:
+ throw std::runtime_error("invalid type");
+ }
+
+ return noutput_items;
+}
+
+template <>
+int noise_source_impl<gr_complex>::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);
+
+ gr_complex* out = (gr_complex*)output_items[0];
+
+ switch (d_type) {
+
+ case GR_UNIFORM:
+ for (int i = 0; i < noutput_items; i++) {
+ out[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++) {
+ out[i] = d_ampl * d_rng.rayleigh_complex();
+ }
+ break;
+
+ default:
+ throw std::runtime_error("invalid type");
+ }
+
+ return noutput_items;
+}
+
+
+template class noise_source<std::int16_t>;
+template class noise_source<std::int32_t>;
+template class noise_source<float>;
+template class noise_source<gr_complex>;
+} /* namespace analog */
+} /* namespace gr */
--
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