X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fudev%2Fv4l_id%2Fv4l_id.c;fp=src%2Fudev%2Fv4l_id%2Fv4l_id.c;h=a2a80b5f4312fc3ad6a10a7d713387ed180c9bf1;hb=3e2147858f21943d5f4a781c60f33ac22c6096ed;hp=0000000000000000000000000000000000000000;hpb=19c5f19d69bb5f520fa7213239490c55de06d99d;p=elogind.git

diff --git a/src/udev/v4l_id/v4l_id.c b/src/udev/v4l_id/v4l_id.c
new file mode 100644
index 000000000..a2a80b5f4
--- /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;
+}