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
|
/***************************************************************************
* CVSID: $Id$
*
* probe-video4linux.c : Probe video4linux devices
*
* Copyright (C) 2007 Nokia Corporation
*
* Licensed under the Academic Free License version 2.1
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
**************************************************************************/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <sys/types.h>
#include <sys/time.h>
#include <sys/ioctl.h>
#include <linux/videodev.h>
#include <linux/videodev2.h>
#include <errno.h>
#include <fcntl.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "libhal/libhal.h"
#include "../../logger.h"
int
main (int argc, char *argv[])
{
int fd = -1;
int ret = -1;
char *udi;
char *device_file;
struct video_capability v1cap;
struct v4l2_capability v2cap;
LibHalContext *ctx = NULL;
LibHalChangeSet *cset;
DBusError error;
setup_logger ();
device_file = getenv ("HAL_PROP_VIDEO4LINUX_DEVICE");
if (device_file == NULL)
goto out;
udi = getenv ("UDI");
if (udi == NULL)
goto out;
dbus_error_init (&error);
ctx = libhal_ctx_init_direct (&error);
if (ctx == NULL)
goto out;
cset = libhal_device_new_changeset (udi);
HAL_DEBUG (("Doing probe-video4linux for %s (udi=%s)", device_file, udi));
fd = open (device_file, O_RDONLY);
if (fd < 0) {
HAL_ERROR (("Cannot open %s: %s", device_file, strerror (errno)));
goto out;
}
if (ioctl (fd, VIDIOC_QUERYCAP, &v2cap) == 0) {
libhal_changeset_set_property_string (cset,
"video4linux.version", "2");
libhal_changeset_set_property_string (cset,
"info.product", (const char *)v2cap.card);
if ((v2cap.capabilities & V4L2_CAP_VIDEO_CAPTURE) > 0) {
libhal_device_add_capability (ctx, udi, "video4linux.video_capture", &error);
} if ((v2cap.capabilities & V4L2_CAP_VIDEO_OUTPUT) > 0) {
LIBHAL_FREE_DBUS_ERROR (&error);
libhal_device_add_capability (ctx, udi, "video4linux.video_output", &error);
} if ((v2cap.capabilities & V4L2_CAP_VIDEO_OVERLAY) > 0) {
LIBHAL_FREE_DBUS_ERROR (&error);
libhal_device_add_capability (ctx, udi, "video4linux.video_overlay", &error);
} if ((v2cap.capabilities & V4L2_CAP_AUDIO) > 0) {
LIBHAL_FREE_DBUS_ERROR (&error);
libhal_device_add_capability (ctx, udi, "video4linux.audio", &error);
} if ((v2cap.capabilities & V4L2_CAP_TUNER) > 0) {
LIBHAL_FREE_DBUS_ERROR (&error);
libhal_device_add_capability (ctx, udi, "video4linux.tuner", &error);
} if ((v2cap.capabilities & V4L2_CAP_RADIO) > 0) {
LIBHAL_FREE_DBUS_ERROR (&error);
libhal_device_add_capability (ctx, udi, "video4linux.radio", &error);
}
} else {
HAL_DEBUG (("ioctl VIDIOC_QUERYCAP failed"));
if (ioctl (fd, VIDIOCGCAP, &v1cap) == 0) {
libhal_changeset_set_property_string (cset,
"video4linux.version", "1");
libhal_changeset_set_property_string (cset,
"info.product", v1cap.name);
if ((v1cap.type & VID_TYPE_CAPTURE) > 0) {
LIBHAL_FREE_DBUS_ERROR (&error);
libhal_device_add_capability (ctx, udi, "video4linux.video_capture", &error);
} if ((v1cap.type & VID_TYPE_OVERLAY) > 0) {
LIBHAL_FREE_DBUS_ERROR (&error);
libhal_device_add_capability (ctx, udi, "video4linux.video_overlay", &error);
} if (v1cap.audios > 0) {
LIBHAL_FREE_DBUS_ERROR (&error);
libhal_device_add_capability (ctx, udi, "video4linux.audio", &error);
} if ((v1cap.type & VID_TYPE_TUNER) > 0) {
LIBHAL_FREE_DBUS_ERROR (&error);
libhal_device_add_capability (ctx, udi, "video4linux.tuner", &error);
}
} else {
HAL_DEBUG (("ioctl VIDIOCGCAP failed"));
}
}
LIBHAL_FREE_DBUS_ERROR (&error);
libhal_device_commit_changeset (ctx, cset, &error);
libhal_device_free_changeset (cset);
close (fd);
ret = 0;
out:
if (fd >= 0)
close (fd);
LIBHAL_FREE_DBUS_ERROR (&error);
if (ctx != NULL) {
libhal_ctx_shutdown (ctx, &error);
LIBHAL_FREE_DBUS_ERROR (&error);
libhal_ctx_free (ctx);
}
return ret;
}
|
