1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
/* -*- c++ -*- */
/*
* Copyright 2005,2010,2013,2016 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
#define GSM_SAMPLES_PER_FRAME 160
#include "gsm_fr_encode_sp_impl.h"
#include <gnuradio/io_signature.h>
#include <stdexcept>
namespace gr {
namespace vocoder {
gsm_fr_encode_sp::sptr gsm_fr_encode_sp::make()
{
return gnuradio::get_initial_sptr(new gsm_fr_encode_sp_impl());
}
gsm_fr_encode_sp_impl::gsm_fr_encode_sp_impl()
: sync_decimator("vocoder_gsm_fr_encode_sp",
io_signature::make(1, 1, sizeof(short)),
io_signature::make(1, 1, sizeof(gsm_frame)),
GSM_SAMPLES_PER_FRAME)
{
if ((d_gsm = gsm_create()) == 0)
throw std::runtime_error("gsm_fr_encode_sp_impl: gsm_create failed");
}
gsm_fr_encode_sp_impl::~gsm_fr_encode_sp_impl() { gsm_destroy(d_gsm); }
int gsm_fr_encode_sp_impl::work(int noutput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items)
{
const short* in = (const short*)input_items[0];
unsigned char* out = (unsigned char*)output_items[0];
for (int i = 0; i < noutput_items; i++) {
gsm_encode(d_gsm, const_cast<short*>(in), out);
in += GSM_SAMPLES_PER_FRAME;
out += sizeof(gsm_frame);
}
return noutput_items;
}
} /* namespace vocoder */
} /* namespace gr */
|
