From 97ba0b074f4ecc1cc78b5d1902c5e2458b4b5c5a Mon Sep 17 00:00:00 2001
From: Andrej Rode <mail@andrejro.de>
Date: Mon, 20 Aug 2018 13:58:33 +0200
Subject: trellis: replace gengen with C++ templates
---
gr-trellis/lib/sccc_decoder_blk_impl.cc | 123 ++++++++++++++++++++++++++++++++
1 file changed, 123 insertions(+)
create mode 100644 gr-trellis/lib/sccc_decoder_blk_impl.cc
(limited to 'gr-trellis/lib/sccc_decoder_blk_impl.cc')
diff --git a/gr-trellis/lib/sccc_decoder_blk_impl.cc b/gr-trellis/lib/sccc_decoder_blk_impl.cc
new file mode 100644
index 0000000000..7855f9f0fe
--- /dev/null
+++ b/gr-trellis/lib/sccc_decoder_blk_impl.cc
@@ -0,0 +1,123 @@
+/* -*- 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 "sccc_decoder_blk_impl.h"
+#include <gnuradio/io_signature.h>
+#include <iostream>
+#include <gnuradio/trellis/core_algorithms.h>
+
+namespace gr {
+ namespace trellis {
+
+ template <class T>
+ typename sccc_decoder_blk<T>::sptr
+ sccc_decoder_blk<T>::make(const fsm &FSMo, int STo0, int SToK,
+ const fsm &FSMi, int STi0, int STiK,
+ const interleaver &INTERLEAVER,
+ int blocklength,
+ int repetitions,
+ siso_type_t SISO_TYPE)
+ {
+ return gnuradio::get_initial_sptr
+ (new sccc_decoder_blk_impl<T>(FSMo, STo0, SToK, FSMi, STi0, STiK,
+ INTERLEAVER, blocklength, repetitions,
+ SISO_TYPE));
+ }
+
+ template <class T>
+ sccc_decoder_blk_impl<T>::sccc_decoder_blk_impl(const fsm &FSMo, int STo0, int SToK,
+ const fsm &FSMi, int STi0, int STiK,
+ const interleaver &INTERLEAVER,
+ int blocklength,
+ int repetitions,
+ siso_type_t SISO_TYPE)
+ : block("sccc_decoder_blk",
+ io_signature::make(1, 1, sizeof(float)),
+ io_signature::make(1, 1, sizeof(T))),
+ d_FSMo(FSMo), d_STo0(STo0), d_SToK(SToK),
+ d_FSMi(FSMi), d_STi0(STi0), d_STiK(STiK),
+ d_INTERLEAVER(INTERLEAVER),
+ d_blocklength(blocklength),
+ d_repetitions(repetitions),
+ d_SISO_TYPE(SISO_TYPE)
+ {
+ this->set_relative_rate(1.0 / ((double) d_FSMi.O()));
+ this->set_output_multiple(d_blocklength);
+ }
+
+ template <class T>
+ sccc_decoder_blk_impl<T>::~sccc_decoder_blk_impl()
+ {
+ }
+
+ template <class T>
+ void
+ sccc_decoder_blk_impl<T>::forecast(int noutput_items,
+ gr_vector_int &ninput_items_required)
+ {
+ int input_required = d_FSMi.O() * noutput_items ;
+ ninput_items_required[0] = input_required;
+ }
+
+ //===========================================================
+
+ template <class T>
+ int
+ sccc_decoder_blk_impl<T>::general_work(int noutput_items,
+ gr_vector_int &ninput_items,
+ gr_vector_const_void_star &input_items,
+ gr_vector_void_star &output_items)
+ {
+ int nblocks = noutput_items / d_blocklength;
+ float (*p2min)(float, float) = NULL;
+
+ if(d_SISO_TYPE == TRELLIS_MIN_SUM)
+ p2min = &min;
+ else if(d_SISO_TYPE == TRELLIS_SUM_PRODUCT)
+ p2min = &min_star;
+
+ const float *in = (const float*)input_items[0];
+ T *out = (T*)output_items[0];
+
+ for(int n = 0; n < nblocks; n++) {
+ sccc_decoder(d_FSMo, d_STo0, d_SToK,
+ d_FSMi, d_STi0, d_STiK,
+ d_INTERLEAVER, d_blocklength, d_repetitions,
+ p2min,
+ &(in[n*d_blocklength*d_FSMi.O()]),
+ &(out[n*d_blocklength]));
+ }
+
+ this->consume_each(d_FSMi.O() * noutput_items );
+ return noutput_items;
+ }
+
+template class sccc_decoder_blk<std::uint8_t>;
+template class sccc_decoder_blk<std::int16_t>;
+template class sccc_decoder_blk<std::int32_t>;
+ } /* namespace trellis */
+} /* namespace gr */
--
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