diff options
Diffstat (limited to 'src/udev/v4l_id')
| -rw-r--r-- | src/udev/v4l_id/60-persistent-v4l.rules | 20 | ||||
| -rw-r--r-- | src/udev/v4l_id/v4l_id.c | 87 |
2 files changed, 107 insertions, 0 deletions
diff --git a/src/udev/v4l_id/60-persistent-v4l.rules b/src/udev/v4l_id/60-persistent-v4l.rules new file mode 100644 index 0000000000..93c5ee8c27 --- /dev/null +++ b/src/udev/v4l_id/60-persistent-v4l.rules @@ -0,0 +1,20 @@ +# do not edit this file, it will be overwritten on update + +ACTION=="remove", GOTO="persistent_v4l_end" +SUBSYSTEM!="video4linux", GOTO="persistent_v4l_end" +ENV{MAJOR}=="", GOTO="persistent_v4l_end" + +IMPORT{program}="v4l_id $devnode" + +SUBSYSTEMS=="usb", IMPORT{builtin}="usb_id" +KERNEL=="video*", ENV{ID_SERIAL}=="?*", SYMLINK+="v4l/by-id/$env{ID_BUS}-$env{ID_SERIAL}-video-index$attr{index}" + +# check for valid "index" number +TEST!="index", GOTO="persistent_v4l_end" +ATTR{index}!="?*", GOTO="persistent_v4l_end" + +IMPORT{builtin}="path_id" +ENV{ID_PATH}=="?*", KERNEL=="video*|vbi*", SYMLINK+="v4l/by-path/$env{ID_PATH}-video-index$attr{index}" +ENV{ID_PATH}=="?*", KERNEL=="audio*", SYMLINK+="v4l/by-path/$env{ID_PATH}-audio-index$attr{index}" + +LABEL="persistent_v4l_end" diff --git a/src/udev/v4l_id/v4l_id.c b/src/udev/v4l_id/v4l_id.c new file mode 100644 index 0000000000..a2a80b5f43 --- /dev/null +++ b/src/udev/v4l_id/v4l_id.c @@ -0,0 +1,87 @@ +/* + * 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; +} |