1 /* -*- c++ -*- */
2 /*
3 * Copyright 2012 Free Software Foundation, Inc.
4 *
5 * This file is part of GNU Radio
6 *
7 * GNU Radio is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3, or (at your option)
10 * any later version.
11 *
12 * GNU Radio is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with GNU Radio; see the file COPYING. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street,
20 * Boston, MA 02110-1301, USA.
21 */
22
23 #ifdef HAVE_CONFIG_H
24 #include "config.h"
25 #endif
26
27 #include "complex_to_float_impl.h"
28 #include <gnuradio/io_signature.h>
29 #include <volk/volk.h>
30
31 namespace gr {
32 namespace blocks {
33
make(size_t vlen)34 complex_to_float::sptr complex_to_float::make(size_t vlen)
35 {
36 return gnuradio::get_initial_sptr(new complex_to_float_impl(vlen));
37 }
38
complex_to_float_impl(size_t vlen)39 complex_to_float_impl::complex_to_float_impl(size_t vlen)
40 : sync_block("complex_to_float",
41 io_signature::make(1, 1, sizeof(gr_complex) * vlen),
42 io_signature::make(1, 2, sizeof(float) * vlen)),
43 d_vlen(vlen)
44 {
45 const int alignment_multiple = volk_get_alignment() / sizeof(float);
46 set_alignment(std::max(1, alignment_multiple));
47 }
48
work(int noutput_items,gr_vector_const_void_star & input_items,gr_vector_void_star & output_items)49 int complex_to_float_impl::work(int noutput_items,
50 gr_vector_const_void_star& input_items,
51 gr_vector_void_star& output_items)
52 {
53 const gr_complex* in = (const gr_complex*)input_items[0];
54 float* out0 = (float*)output_items[0];
55 float* out1;
56 int noi = noutput_items * d_vlen;
57
58 switch (output_items.size()) {
59 case 1:
60 volk_32fc_deinterleave_real_32f(out0, in, noi);
61 break;
62
63 case 2:
64 out1 = (float*)output_items[1];
65 volk_32fc_deinterleave_32f_x2(out0, out1, in, noi);
66 break;
67
68 default:
69 abort();
70 }
71
72 return noutput_items;
73 }
74
75 } /* namespace blocks */
76 } /* namespace gr */
77