| /* |
| * Copyright (C) 2009 Kay Sievers <kay.sievers@vrfy.org> |
| * Copyright (c) 2009 Filippo Argiolas <filippo.argiolas@gmail.com> |
| * |
| * 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: |
| */ |
| |
| #include <stdio.h> |
| #include <errno.h> |
| #include <string.h> |
| #include <ctype.h> |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <unistd.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <getopt.h> |
| #include <sys/types.h> |
| #include <sys/time.h> |
| #include <sys/ioctl.h> |
| #include <linux/videodev2.h> |
| |
| int main (int argc, char *argv[]) |
| { |
| static const struct option options[] = { |
| { "help", no_argument, NULL, 'h' }, |
| {} |
| }; |
| int fd; |
| char *device; |
| struct v4l2_capability v2cap; |
| |
| while (1) { |
| int option; |
| |
| option = getopt_long(argc, argv, "h", options, NULL); |
| if (option == -1) |
| break; |
| |
| switch (option) { |
| case 'h': |
| printf("Usage: v4l_id [--help] <device file>\n\n"); |
| return 0; |
| default: |
| return 1; |
| } |
| } |
| device = argv[optind]; |
| |
| if (device == NULL) |
| return 2; |
| fd = open (device, O_RDONLY); |
| if (fd < 0) |
| return 3; |
| |
| if (ioctl (fd, VIDIOC_QUERYCAP, &v2cap) == 0) { |
| printf("ID_V4L_VERSION=2\n"); |
| printf("ID_V4L_PRODUCT=%s\n", v2cap.card); |
| printf("ID_V4L_CAPABILITIES=:"); |
| if ((v2cap.capabilities & V4L2_CAP_VIDEO_CAPTURE) > 0) |
| printf("capture:"); |
| if ((v2cap.capabilities & V4L2_CAP_VIDEO_OUTPUT) > 0) |
| printf("video_output:"); |
| if ((v2cap.capabilities & V4L2_CAP_VIDEO_OVERLAY) > 0) |
| printf("video_overlay:"); |
| if ((v2cap.capabilities & V4L2_CAP_AUDIO) > 0) |
| printf("audio:"); |
| if ((v2cap.capabilities & V4L2_CAP_TUNER) > 0) |
| printf("tuner:"); |
| if ((v2cap.capabilities & V4L2_CAP_RADIO) > 0) |
| printf("radio:"); |
| printf("\n"); |
| } |
| |
| close (fd); |
| return 0; |
| } |