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
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
|
/* -*- c++ -*- */
/*
* Copyright 2002 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 2, 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.
*/
#include <cppunit/TestAssert.h>
#include <qa_atsci_data_interleaver.h>
/*!
* write an easy to identify pattern into the packet
*/
void
qa_atsci_data_interleaver::init_test_packet (int counter,
atsc_mpeg_packet_rs_encoded &out)
{
out.data[0] = 0xf0;
out.data[1] = 0xff;
out.data[2] = (counter >> 8) & 0xff;
out.data[3] = counter & 0xff;
for (int i = 4; i < 205; i++)
out.data[i] = i;
out.data[205] = 0xa0;
out.data[206] = 0xaf;
}
void
qa_atsci_data_interleaver::print_packet (FILE *fp,
int frame_number,
int field_number,
int segment_number,
const atsc_mpeg_packet_rs_encoded &in)
{
fprintf (fp, "%04d:%d:%03d ", frame_number, field_number, segment_number);
const unsigned char *p = &in.data[0];
for (int i = 0; i < 8; i++)
fprintf (fp, "%02X", p[i]);
fprintf (fp, " ");
p = &in.data[8];
for (int i = 0; i < 8; i++)
fprintf (fp, "%02X", p[i]);
fprintf (fp, " ... ");
p = &in.data[191];
for (int i = 0; i < 8; i++)
fprintf (fp, "%02X", p[i]);
fprintf (fp, " ");
p = &in.data[199];
for (int i = 0; i < 8; i++)
fprintf (fp, "%02X", p[i]);
fprintf (fp, "\n");
}
void
qa_atsci_data_interleaver::chk_assert (const atsc_mpeg_packet_rs_encoded &expected,
const atsc_mpeg_packet_rs_encoded &actual)
{
if (expected == actual)
return;
FILE *fp = stderr;
fprintf (fp, "Expected: ");
print_packet (fp, 0, 0, 0, expected);
fprintf (fp, "Actual: ");
print_packet (fp, 0, 0, 0, actual);
CPPUNIT_ASSERT (expected == actual);
}
void
qa_atsci_data_interleaver::t0 ()
{
int counter = 0;
atsc_mpeg_packet_rs_encoded in, enc, out;
atsc_mpeg_packet_rs_encoded zero;
memset (&zero, 0, sizeof (zero));
for (int frame = 0; frame < 4; frame++){
for (int field = 0; field < 2; field++){
for (int segment = 0; segment < 312; segment++, counter++){
// build test packet
init_test_packet (counter, in);
in.pli.set_regular_seg (field == 1, segment);
// interleave it
outbound.interleave (enc, in);
// deinterleave it
inbound.deinterleave (out, enc);
if (counter < 52)
// CPPUNIT_ASSERT (zero == out);
chk_assert (zero, out);
else if (counter >= 52){
atsc_mpeg_packet_rs_encoded expected;
init_test_packet (counter - 52, expected);
// CPPUNIT_ASSERT (expected == out);
chk_assert (expected, out);
}
}
}
}
}
//
// Note, this assumes that the interleaver and deinterleaver
// have the state left by t0.
//
// This test pushes crap into the interleaver, and then confirms that
// the deinterleaver recovers. This would be part of what you'd see
// on a channel change.
//
void
qa_atsci_data_interleaver::t1 ()
{
int counter = 0;
atsc_mpeg_packet_rs_encoded in, enc, out;
atsc_mpeg_packet_rs_encoded zero;
memset (&zero, 0, sizeof (zero));
static const int NCRAP = 13;
// push NCRAP segments of crap into the interleaver,
// but don't change the deinterleaver state
for (int i = 0; i < NCRAP; i++){
init_test_packet (i + 2758, in);
in.pli.set_regular_seg (false, i + 5);
outbound.interleave (enc, in);
}
// now run the normal test.
// we should get good segments after NCRAP + 52
int starting_counter = 3141;
counter = starting_counter;
for (int frame = 0; frame < 4; frame++){
for (int field = 0; field < 2; field++){
for (int segment = 0; segment < 312; segment++, counter++){
// build test packet
init_test_packet (counter, in);
in.pli.set_regular_seg (field == 1, segment);
// interleave it
outbound.interleave (enc, in);
// deinterleave it
inbound.deinterleave (out, enc);
if (counter < starting_counter + 52 + NCRAP){
// don't care...
}
else if (counter >= starting_counter + 52 + NCRAP){
atsc_mpeg_packet_rs_encoded expected;
init_test_packet (counter - 52, expected);
// CPPUNIT_ASSERT (expected == out);
chk_assert (expected, out);
}
}
}
}
}
|
