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e7145211 | 1 | /* SPDX-License-Identifier: GPL-2.0+ */ |
c5a9680e | 2 | /* |
c5a9680e KS |
3 | * Copyright (c) 2009 Filippo Argiolas <filippo.argiolas@gmail.com> |
4 | * | |
5 | * This program is free software; you can redistribute it and/or | |
6 | * modify it under the terms of the GNU General Public License as | |
7 | * published by the Free Software Foundation; either version 2 of the | |
8 | * License, or (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, but | |
11 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | * General Public License for more details: | |
14 | */ | |
15 | ||
c5a9680e | 16 | #include <ctype.h> |
cf0fbc49 | 17 | #include <errno.h> |
c5a9680e KS |
18 | #include <fcntl.h> |
19 | #include <getopt.h> | |
cf0fbc49 TA |
20 | #include <stdio.h> |
21 | #include <stdlib.h> | |
22 | #include <string.h> | |
c5a9680e | 23 | #include <sys/ioctl.h> |
cf0fbc49 TA |
24 | #include <sys/time.h> |
25 | #include <sys/types.h> | |
26 | #include <unistd.h> | |
c5a9680e KS |
27 | #include <linux/videodev2.h> |
28 | ||
3ffd4af2 | 29 | #include "fd-util.h" |
5ac0162c LP |
30 | #include "util.h" |
31 | ||
32 | int main(int argc, char *argv[]) { | |
912541b0 KS |
33 | static const struct option options[] = { |
34 | { "help", no_argument, NULL, 'h' }, | |
35 | {} | |
36 | }; | |
5ac0162c | 37 | _cleanup_close_ int fd = -1; |
912541b0 KS |
38 | char *device; |
39 | struct v4l2_capability v2cap; | |
fadce6ca | 40 | int c; |
c5a9680e | 41 | |
fadce6ca | 42 | while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0) |
c5a9680e | 43 | |
fadce6ca | 44 | switch (c) { |
912541b0 | 45 | case 'h': |
5ac0162c LP |
46 | printf("%s [-h,--help] <device file>\n\n" |
47 | "Video4Linux device identification.\n\n" | |
48 | " -h Print this message\n" | |
49 | , program_invocation_short_name); | |
912541b0 | 50 | return 0; |
fadce6ca ZJS |
51 | case '?': |
52 | return -EINVAL; | |
53 | ||
912541b0 | 54 | default: |
fadce6ca | 55 | assert_not_reached("Unhandled option"); |
912541b0 | 56 | } |
c5a9680e | 57 | |
fadce6ca | 58 | device = argv[optind]; |
912541b0 KS |
59 | if (device == NULL) |
60 | return 2; | |
fadce6ca | 61 | |
5ac0162c | 62 | fd = open(device, O_RDONLY); |
912541b0 KS |
63 | if (fd < 0) |
64 | return 3; | |
c5a9680e | 65 | |
5ac0162c | 66 | if (ioctl(fd, VIDIOC_QUERYCAP, &v2cap) == 0) { |
64687610 | 67 | int capabilities; |
912541b0 KS |
68 | printf("ID_V4L_VERSION=2\n"); |
69 | printf("ID_V4L_PRODUCT=%s\n", v2cap.card); | |
70 | printf("ID_V4L_CAPABILITIES=:"); | |
64687610 MO |
71 | if (v2cap.capabilities & V4L2_CAP_DEVICE_CAPS) |
72 | capabilities = v2cap.device_caps; | |
73 | else | |
74 | capabilities = v2cap.capabilities; | |
75 | if ((capabilities & V4L2_CAP_VIDEO_CAPTURE) > 0 || | |
76 | (capabilities & V4L2_CAP_VIDEO_CAPTURE_MPLANE) > 0) | |
912541b0 | 77 | printf("capture:"); |
64687610 MO |
78 | if ((capabilities & V4L2_CAP_VIDEO_OUTPUT) > 0 || |
79 | (capabilities & V4L2_CAP_VIDEO_OUTPUT_MPLANE) > 0) | |
912541b0 | 80 | printf("video_output:"); |
64687610 | 81 | if ((capabilities & V4L2_CAP_VIDEO_OVERLAY) > 0) |
912541b0 | 82 | printf("video_overlay:"); |
64687610 | 83 | if ((capabilities & V4L2_CAP_AUDIO) > 0) |
912541b0 | 84 | printf("audio:"); |
64687610 | 85 | if ((capabilities & V4L2_CAP_TUNER) > 0) |
912541b0 | 86 | printf("tuner:"); |
64687610 | 87 | if ((capabilities & V4L2_CAP_RADIO) > 0) |
912541b0 KS |
88 | printf("radio:"); |
89 | printf("\n"); | |
90 | } | |
c5a9680e | 91 | |
912541b0 | 92 | return 0; |
c5a9680e | 93 | } |