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
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
|
/* femon -- monitor frontend status
*
* Copyright (C) 2003 convergence GmbH
* Johannes Stezenbach <js@convergence.de>
*
* This program 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 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
#include <string.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/poll.h>
#include <fcntl.h>
#include <time.h>
#include <unistd.h>
#include <stdint.h>
#include <sys/time.h>
#include <libdvbapi/dvbfe.h>
#define FE_STATUS_PARAMS (DVBFE_INFO_LOCKSTATUS|DVBFE_INFO_SIGNAL_STRENGTH|DVBFE_INFO_BER|DVBFE_INFO_SNR|DVBFE_INFO_UNCORRECTED_BLOCKS)
static char *usage_str =
"\nusage: femon [options]\n"
" -H : human readable output\n"
" -A : Acoustical mode. A sound indicates the signal quality.\n"
" -r : If 'Acoustical mode' is active it tells the application\n"
" is called remotely via ssh. The sound is heard on the 'real'\n"
" machine but. The user has to be root.\n"
" -a number : use given adapter (default 0)\n"
" -f number : use given frontend (default 0)\n"
" -c number : samples to take (default 0 = infinite)\n\n";
int sleep_time=1000000;
int acoustical_mode=0;
int remote=0;
static void usage(void)
{
fprintf(stderr, "%s", usage_str);
exit(1);
}
static
int check_frontend (struct dvbfe_handle *fe, int human_readable, unsigned int count)
{
struct dvbfe_info fe_info;
unsigned int samples = 0;
FILE *ttyFile=NULL;
// We dont write the "beep"-codes to stdout but to /dev/tty1.
// This is neccessary for Thin-Client-Systems or Streaming-Boxes
// where the computer does not have a monitor and femon is called via ssh.
if(acoustical_mode)
{
if(remote)
{
ttyFile=fopen("/dev/tty1","w");
if(!ttyFile)
{
fprintf(stderr, "Could not open /dev/tty1. No access rights?\n");
exit(-1);
}
}
else
{
ttyFile=stdout;
}
}
do {
if (dvbfe_get_info(fe, FE_STATUS_PARAMS, &fe_info, DVBFE_INFO_QUERYTYPE_IMMEDIATE, 0) != FE_STATUS_PARAMS) {
fprintf(stderr, "Problem retrieving frontend information: %m\n");
}
if (human_readable) {
printf ("status %c%c%c%c%c | signal %3u%% | snr %3u%% | ber %d | unc %d | ",
fe_info.signal ? 'S' : ' ',
fe_info.carrier ? 'C' : ' ',
fe_info.viterbi ? 'V' : ' ',
fe_info.sync ? 'Y' : ' ',
fe_info.lock ? 'L' : ' ',
(fe_info.signal_strength * 100) / 0xffff,
(fe_info.snr * 100) / 0xffff,
fe_info.ber,
fe_info.ucblocks);
} else {
printf ("status %c%c%c%c%c | signal %04x | snr %04x | ber %08x | unc %08x | ",
fe_info.signal ? 'S' : ' ',
fe_info.carrier ? 'C' : ' ',
fe_info.viterbi ? 'V' : ' ',
fe_info.sync ? 'Y' : ' ',
fe_info.lock ? 'L' : ' ',
fe_info.signal_strength,
fe_info.snr,
fe_info.ber,
fe_info.ucblocks);
}
if (fe_info.lock)
printf("FE_HAS_LOCK");
// create beep if acoustical_mode enabled
if(acoustical_mode)
{
int signal=(fe_info.signal_strength * 100) / 0xffff;
fprintf( ttyFile, "\033[10;%d]\a", 500+(signal*2));
// printf("Variable : %d\n", signal);
fflush(ttyFile);
}
printf("\n");
fflush(stdout);
usleep(sleep_time);
samples++;
} while ((!count) || (count-samples));
if(ttyFile)
fclose(ttyFile);
return 0;
}
static
int do_mon(unsigned int adapter, unsigned int frontend, int human_readable, unsigned int count)
{
int result;
struct dvbfe_handle *fe;
struct dvbfe_info fe_info;
char *fe_type = "UNKNOWN";
fe = dvbfe_open(adapter, frontend, 1);
if (fe == NULL) {
perror("opening frontend failed");
return 0;
}
dvbfe_get_info(fe, 0, &fe_info, DVBFE_INFO_QUERYTYPE_IMMEDIATE, 0);
switch(fe_info.type) {
case DVBFE_TYPE_DVBS:
fe_type = "DVBS";
break;
case DVBFE_TYPE_DVBC:
fe_type = "DVBC";
break;
case DVBFE_TYPE_DVBT:
fe_type = "DVBT";
break;
case DVBFE_TYPE_ATSC:
fe_type = "ATSC";
break;
}
printf("FE: %s (%s)\n", fe_info.name, fe_type);
result = check_frontend (fe, human_readable, count);
dvbfe_close(fe);
return result;
}
int main(int argc, char *argv[])
{
unsigned int adapter = 0, frontend = 0, count = 0;
int human_readable = 0;
int opt;
while ((opt = getopt(argc, argv, "rAHa:f:c:")) != -1) {
switch (opt)
{
default:
usage();
break;
case 'a':
adapter = strtoul(optarg, NULL, 0);
break;
case 'c':
count = strtoul(optarg, NULL, 0);
break;
case 'f':
frontend = strtoul(optarg, NULL, 0);
break;
case 'H':
human_readable = 1;
break;
case 'A':
// Acoustical mode: we have to reduce the delay between
// checks in order to hear nice sound
sleep_time=5000;
acoustical_mode=1;
break;
case 'r':
remote=1;
break;
}
}
do_mon(adapter, frontend, human_readable, count);
return 0;
}
|
