/* * 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; }