89 lines
2.9 KiB
C
89 lines
2.9 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/*
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* Copyright (C) 2009 Kay Sievers <kay@vrfy.org>
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* Copyright (c) 2009 Filippo Argiolas <filippo.argiolas@gmail.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details:
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*/
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#include <ctype.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <getopt.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/ioctl.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <linux/videodev2.h>
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#include "fd-util.h"
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#include "util.h"
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int main(int argc, char *argv[]) {
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static const struct option options[] = {
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{ "help", no_argument, NULL, 'h' },
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{}
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};
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_cleanup_close_ int fd = -1;
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char *device;
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struct v4l2_capability v2cap;
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int c;
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while ((c = getopt_long(argc, argv, "h", options, NULL)) >= 0)
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switch (c) {
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case 'h':
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printf("%s [-h,--help] <device file>\n\n"
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"Video4Linux device identification.\n\n"
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" -h Print this message\n"
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, program_invocation_short_name);
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return 0;
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case '?':
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return -EINVAL;
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default:
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assert_not_reached("Unhandled option");
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}
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device = argv[optind];
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if (device == NULL)
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return 2;
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fd = open(device, O_RDONLY);
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if (fd < 0)
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return 3;
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if (ioctl(fd, VIDIOC_QUERYCAP, &v2cap) == 0) {
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printf("ID_V4L_VERSION=2\n");
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printf("ID_V4L_PRODUCT=%s\n", v2cap.card);
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printf("ID_V4L_CAPABILITIES=:");
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if ((v2cap.capabilities & V4L2_CAP_VIDEO_CAPTURE) > 0)
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printf("capture:");
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if ((v2cap.capabilities & V4L2_CAP_VIDEO_OUTPUT) > 0)
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printf("video_output:");
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if ((v2cap.capabilities & V4L2_CAP_VIDEO_OVERLAY) > 0)
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printf("video_overlay:");
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if ((v2cap.capabilities & V4L2_CAP_AUDIO) > 0)
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printf("audio:");
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if ((v2cap.capabilities & V4L2_CAP_TUNER) > 0)
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printf("tuner:");
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if ((v2cap.capabilities & V4L2_CAP_RADIO) > 0)
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printf("radio:");
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printf("\n");
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}
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return 0;
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}
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