From 1043222e0de551f00683a1cc9060f194adc4fc85 Mon Sep 17 00:00:00 2001
From: Andrej Rode <mail@andrejro.de>
Date: Thu, 22 Feb 2018 13:28:01 +0100
Subject: blocks: replace gengen with C++ templates
---
gr-blocks/lib/packed_to_unpacked_impl.cc | 152 +++++++++++++++++++++++++++++++
1 file changed, 152 insertions(+)
create mode 100644 gr-blocks/lib/packed_to_unpacked_impl.cc
(limited to 'gr-blocks/lib/packed_to_unpacked_impl.cc')
diff --git a/gr-blocks/lib/packed_to_unpacked_impl.cc b/gr-blocks/lib/packed_to_unpacked_impl.cc
new file mode 100644
index 0000000000..54b6031238
--- /dev/null
+++ b/gr-blocks/lib/packed_to_unpacked_impl.cc
@@ -0,0 +1,152 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2004,2013,2018 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 "packed_to_unpacked_impl.h"
+#include <gnuradio/io_signature.h>
+#include <assert.h>
+
+namespace gr {
+ namespace blocks {
+
+ template <class T>
+ typename packed_to_unpacked<T>::sptr
+ packed_to_unpacked<T>::make(unsigned int bits_per_chunk,
+ endianness_t endianness)
+ {
+ return gnuradio::get_initial_sptr
+ (new packed_to_unpacked_impl<T> (bits_per_chunk, endianness));
+ }
+
+ template <class T>
+ packed_to_unpacked_impl<T> ::packed_to_unpacked_impl(unsigned int bits_per_chunk,
+ endianness_t endianness)
+ : block("packed_to_unpacked",
+ io_signature::make(1, -1, sizeof(T)),
+ io_signature::make(1, -1, sizeof(T))),
+ d_bits_per_chunk(bits_per_chunk), d_endianness(endianness), d_index(0)
+ {
+ assert(bits_per_chunk <= this->d_bits_per_type);
+ assert(bits_per_chunk > 0);
+
+ this->set_relative_rate((1.0 * this->d_bits_per_type) / bits_per_chunk);
+ }
+
+ template <class T>
+ packed_to_unpacked_impl<T> ::~packed_to_unpacked_impl()
+ {
+ }
+
+ template <class T>
+ void
+ packed_to_unpacked_impl<T> ::forecast(int noutput_items,
+ gr_vector_int &ninput_items_required)
+ {
+ int input_required = (int)ceil((d_index + noutput_items * d_bits_per_chunk)
+ / (1.0 * this->d_bits_per_type));
+ unsigned ninputs = ninput_items_required.size();
+ for(unsigned int i = 0; i < ninputs; i++) {
+ ninput_items_required[i] = input_required;
+ //printf("Forecast wants %d needs %d\n",noutput_items,ninput_items_required[i]);
+ }
+ }
+
+ template <class T>
+ unsigned int
+ packed_to_unpacked_impl<T>::get_bit_le(const T *in_vector, unsigned int bit_addr)
+ {
+ T x = in_vector[bit_addr >> this->d_log2_l_type];
+ return (x >> (bit_addr & (this->d_bits_per_type-1))) & 1;
+ }
+
+ template <class T>
+ unsigned int
+ packed_to_unpacked_impl<T>::get_bit_be(const T *in_vector, unsigned int bit_addr)
+ {
+ T x = in_vector[bit_addr >> this->d_log2_l_type];
+ return (x >> ((this->d_bits_per_type-1) - (bit_addr & (this->d_bits_per_type-1)))) & 1;
+ }
+
+ template <class T>
+ int
+ packed_to_unpacked_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)
+ {
+ unsigned int index_tmp = d_index;
+
+ assert(input_items.size() == output_items.size());
+ int nstreams = input_items.size();
+
+ for (int m=0; m < nstreams; m++){
+ const T *in = (T *)input_items[m];
+ T *out = (T *)output_items[m];
+ index_tmp = d_index;
+
+ // per stream processing
+
+ switch(d_endianness) {
+ case GR_MSB_FIRST:
+ for(int i = 0; i < noutput_items; i++) {
+ //printf("here msb %d\n",i);
+ T x = 0;
+ for(unsigned int j = 0; j < d_bits_per_chunk; j++, index_tmp++)
+ x = (x<<1) | get_bit_be(in, index_tmp);
+ out[i] = x;
+ }
+ break;
+
+ case GR_LSB_FIRST:
+ for(int i = 0; i < noutput_items; i++) {
+ //printf("here lsb %d\n",i);
+ T x = 0;
+ for(unsigned int j = 0; j < d_bits_per_chunk; j++, index_tmp++)
+ x = (x<<1) | get_bit_le(in, index_tmp);
+ out[i] = x;
+ }
+ break;
+
+ default:
+ assert(0);
+ }
+
+ //printf("almost got to end\n");
+ assert(ninput_items[m] >= (int)((d_index+(this->d_bits_per_type-1)) >> this->d_log2_l_type));
+ }
+
+ d_index = index_tmp;
+ this->consume_each(d_index >> this->d_log2_l_type);
+ d_index = d_index & (this->d_bits_per_type-1);
+ //printf("got to end\n");
+ return noutput_items;
+ }
+
+template class packed_to_unpacked<std::uint8_t>;
+template class packed_to_unpacked<std::int16_t>;
+template class packed_to_unpacked<std::int32_t>;
+ } /* namespace blocks */
+} /* namespace gr */
--
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