3 * Copyright 2006 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 3, 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.
27 #include <atsc_derandomizer.h>
28 #include <gr_io_signature.h>
29 #include <atsc_consts.h>
32 atsc_derandomizer_sptr
33 atsc_make_derandomizer()
35 return atsc_derandomizer_sptr(new atsc_derandomizer());
38 atsc_derandomizer::atsc_derandomizer()
39 : gr_sync_block("atsc_derandomizer",
40 gr_make_io_signature(1, 1, sizeof(atsc_mpeg_packet_no_sync)),
41 gr_make_io_signature(1, 1, sizeof(atsc_mpeg_packet)))
47 atsc_derandomizer::reset()
53 atsc_derandomizer::work (int noutput_items,
54 gr_vector_const_void_star &input_items,
55 gr_vector_void_star &output_items)
57 const atsc_mpeg_packet_no_sync *in = (const atsc_mpeg_packet_no_sync *) input_items[0];
58 atsc_mpeg_packet *out = (atsc_mpeg_packet *) output_items[0];
60 for (int i = 0; i < noutput_items; i++){
62 assert(in[i].pli.regular_seg_p());
64 if (in[i].pli.first_regular_seg_p())
67 d_rand.derandomize(out[i], in[i]);
69 // Check the pipeline info for error status and and set the
70 // corresponding bit in transport packet header.
72 if (in[i].pli.transport_error_p())
73 out[i].data[1] |= MPEG_TRANSPORT_ERROR_BIT;
75 out[i].data[1] &= ~MPEG_TRANSPORT_ERROR_BIT;