3 * Copyright 2005 Free Software Foundation, Inc.
5 * This file is part of GNU Radio
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 2, or (at your option)
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.
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.
26 #include "gsm_fr_decode_ps.h"
30 #include <gr_io_signature.h>
35 gsm_fr_make_decode_ps ()
37 return gsm_fr_decode_ps_sptr (new gsm_fr_decode_ps ());
40 gsm_fr_decode_ps::gsm_fr_decode_ps ()
41 : gr_sync_interpolator ("gsm_fr_decode_ps",
42 gr_make_io_signature (1, 1, sizeof (gsm_frame)),
43 gr_make_io_signature (1, 1, sizeof (short)),
44 GSM_SAMPLES_PER_FRAME)
46 if ((d_gsm = gsm_create ()) == 0)
47 throw std::runtime_error ("gsm_fr_decode_ps: gsm_create failed");
50 gsm_fr_decode_ps::~gsm_fr_decode_ps ()
56 gsm_fr_decode_ps::work (int noutput_items,
57 gr_vector_const_void_star &input_items,
58 gr_vector_void_star &output_items)
60 const unsigned char *in = (const unsigned char *) input_items[0];
61 short *out = (short *) output_items[0];
63 assert ((noutput_items % GSM_SAMPLES_PER_FRAME) == 0);
65 for (int i = 0; i < noutput_items; i += GSM_SAMPLES_PER_FRAME){
66 gsm_decode (d_gsm, const_cast<unsigned char*>(in), out);
67 in += sizeof (gsm_frame);
68 out += GSM_SAMPLES_PER_FRAME;