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
|
/*
* Media controller test application
*
* Copyright (C) 2010-2011 Ideas on board SPRL
*
* Contact: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdlib.h>
#include <getopt.h>
#include <stdio.h>
#include <unistd.h>
#include "options.h"
#define MEDIA_DEVNAME_DEFAULT "/dev/media0"
struct media_options media_opts = {
.devname = MEDIA_DEVNAME_DEFAULT,
};
static void usage(const char *argv0, int verbose)
{
printf("%s [options] device\n", argv0);
printf("-d, --device dev Media device name (default: %s)\n", MEDIA_DEVNAME_DEFAULT);
printf("-e, --entity name Print the device name associated with the given entity\n");
printf("-f, --set-format Comma-separated list of formats to setup\n");
printf(" --get-format pad Print the active format on a given pad\n");
printf("-h, --help Show verbose help and exit\n");
printf("-i, --interactive Modify links interactively\n");
printf("-l, --links Comma-separated list of links descriptors to setup\n");
printf("-p, --print-topology Print the device topology (implies -v)\n");
printf(" --print-dot Print the device topology as a dot graph (implies -v)\n");
printf("-r, --reset Reset all links to inactive\n");
printf("-v, --verbose Be verbose\n");
if (!verbose)
return;
printf("\n");
printf("Links and formats are defined as\n");
printf("\tlink = pad, '->', pad, '[', flags, ']' ;\n");
printf("\tformat = pad, '[', fcc, ' ', size, [ ' ', crop ], [ ' ', '@', frame interval ], ']' ;\n");
printf("\tpad = entity, ':', pad number ;\n");
printf("\tentity = entity number | ( '\"', entity name, '\"' ) ;\n");
printf("\tsize = width, 'x', height ;\n");
printf("\tcrop = '(', left, ',', top, ')', '/', size ;\n");
printf("\tframe interval = numerator, '/', denominator ;\n");
printf("where the fields are\n");
printf("\tentity number Entity numeric identifier\n");
printf("\tentity name Entity name (string) \n");
printf("\tpad number Pad numeric identifier\n");
printf("\tflags Link flags (0: inactive, 1: active)\n");
printf("\tfcc Format FourCC\n");
printf("\twidth Image width in pixels\n");
printf("\theight Image height in pixels\n");
printf("\tnumerator Frame interval numerator\n");
printf("\tdenominator Frame interval denominator\n");
}
#define OPT_PRINT_DOT 256
#define OPT_GET_FORMAT 257
static struct option opts[] = {
{"device", 1, 0, 'd'},
{"entity", 1, 0, 'e'},
{"set-format", 1, 0, 'f'},
{"get-format", 1, 0, OPT_GET_FORMAT},
{"help", 0, 0, 'h'},
{"interactive", 0, 0, 'i'},
{"links", 1, 0, 'l'},
{"print-dot", 0, 0, OPT_PRINT_DOT},
{"print-topology", 0, 0, 'p'},
{"reset", 0, 0, 'r'},
{"verbose", 0, 0, 'v'},
};
int parse_cmdline(int argc, char **argv)
{
int opt;
if (argc == 1) {
usage(argv[0], 0);
return 1;
}
/* parse options */
while ((opt = getopt_long(argc, argv, "d:e:f:hil:prv", opts, NULL)) != -1) {
switch (opt) {
case 'd':
media_opts.devname = optarg;
break;
case 'e':
media_opts.entity = optarg;
break;
case 'f':
media_opts.formats = optarg;
break;
case 'h':
usage(argv[0], 1);
exit(0);
case 'i':
media_opts.interactive = 1;
break;
case 'l':
media_opts.links = optarg;
break;
case 'p':
media_opts.print = 1;
media_opts.verbose = 1;
break;
case 'r':
media_opts.reset = 1;
break;
case 'v':
media_opts.verbose = 1;
break;
case OPT_PRINT_DOT:
media_opts.print_dot = 1;
break;
case OPT_GET_FORMAT:
media_opts.pad = optarg;
break;
default:
printf("Invalid option -%c\n", opt);
printf("Run %s -h for help.\n", argv[0]);
return 1;
}
}
return 0;
}
|
