blob: b6cca0c8d8ec7d4b809a219165d74a497e761f61 (
plain)
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
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
/* -*- c++ -*- */
/*
* Copyright 2014 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "atsc_deinterleaver_impl.h"
#include "gnuradio/dtv/atsc_consts.h"
#include <gnuradio/io_signature.h>
namespace gr {
namespace dtv {
atsc_deinterleaver::sptr atsc_deinterleaver::make()
{
return gnuradio::get_initial_sptr(new atsc_deinterleaver_impl());
}
atsc_deinterleaver_impl::atsc_deinterleaver_impl()
: gr::sync_block("atsc_deinterleaver",
io_signature::make(1, 1, sizeof(atsc_mpeg_packet_rs_encoded)),
io_signature::make(1, 1, sizeof(atsc_mpeg_packet_rs_encoded))),
alignment_fifo(156)
{
m_fifo.resize(52);
for (int i = 0; i < 52; i++)
m_fifo[52 - 1 - i] = new interleaver_fifo<unsigned char>(i * 4);
sync();
}
atsc_deinterleaver_impl::~atsc_deinterleaver_impl()
{
for (int i = 0; i < 52; i++)
delete m_fifo[i];
}
void atsc_deinterleaver_impl::reset()
{
sync();
for (int i = 0; i < 52; i++)
m_fifo[i]->reset();
}
int atsc_deinterleaver_impl::work(int noutput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items)
{
const atsc_mpeg_packet_rs_encoded* in =
(const atsc_mpeg_packet_rs_encoded*)input_items[0];
atsc_mpeg_packet_rs_encoded* out = (atsc_mpeg_packet_rs_encoded*)output_items[0];
for (int i = 0; i < noutput_items; i++) {
assert(in[i].pli.regular_seg_p());
plinfo::sanity_check(in[i].pli);
// reset commutator if required using INPUT pipeline info
if (in[i].pli.first_regular_seg_p())
sync();
// remap OUTPUT pipeline info to reflect 52 data segment end-to-end delay
plinfo::delay(out[i].pli, in[i].pli, 52);
// now do the actual deinterleaving
for (unsigned int j = 0; j < sizeof(in[i].data); j++) {
out[i].data[j] = alignment_fifo.stuff(transform(in[i].data[j]));
}
}
return noutput_items;
}
} /* namespace dtv */
} /* namespace gr */
|
