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126 lines
3.8 KiB
C
126 lines
3.8 KiB
C
/* $NetBSD: devinfo_video.c,v 1.1 2008/11/27 22:19:10 jmcneill Exp $ */
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/*-
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* Copyright (c) 2008 Jared D. McNeill <jmcneill@invisible.ca>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <sys/videoio.h>
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#include <sys/ioctl.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <string.h>
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#include <paths.h>
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#include <unistd.h>
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#include "../osspec.h"
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#include "../logger.h"
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#include "../hald.h"
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#include "../hald_dbus.h"
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#include "../device_info.h"
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#include "../util.h"
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#include "../ids.h"
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#include "hotplug.h"
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#include "devinfo.h"
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#include "devinfo_video.h"
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#include "drvctl.h"
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HalDevice *devinfo_video_add(HalDevice *parent, const char *devnode, char *devfs_path, char *device_type);
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DevinfoDevHandler devinfo_video_handler = {
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devinfo_video_add,
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NULL,
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NULL,
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NULL,
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NULL,
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NULL
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};
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HalDevice *
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devinfo_video_add(HalDevice *parent, const char *devnode, char *devfs_path, char *device_type)
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{
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HalDevice *d = NULL;
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prop_dictionary_t dict;
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const char *driver, *parent_udi;
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char *videodev;
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int16_t unit;
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struct v4l2_capability caps;
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int fd;
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if (drvctl_find_device (devnode, &dict) == FALSE || dict == NULL)
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return NULL;
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if (prop_dictionary_get_int16 (dict, "device-unit", &unit) == false ||
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prop_dictionary_get_cstring_nocopy (dict, "device-driver", &driver) == false) {
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prop_object_release (dict);
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return NULL;
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}
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prop_object_release (dict);
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if (strcmp (driver, "video") != 0)
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return NULL;
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videodev = g_strdup_printf ("/dev/video%d", unit);
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fd = open (videodev, O_RDONLY);
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if (fd < 0) {
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HAL_WARNING (("couldn't open %s: %s", videodev, strerror(errno)));
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goto done;
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}
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if (ioctl (fd, VIDIOC_QUERYCAP, &caps) == -1) {
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HAL_WARNING (("couldn't query %s: %s", videodev, strerror(errno)));
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close (fd);
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goto done;
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}
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close (fd);
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d = hal_device_new ();
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devinfo_set_default_properties (d, parent, devnode, devfs_path);
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hal_device_add_capability (d, "video4linux");
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if (caps.capabilities & V4L2_CAP_VIDEO_CAPTURE)
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hal_device_add_capability (d, "video4linux.video_capture");
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hal_device_property_set_string (d, "info.category", "video4linux");
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hal_device_property_set_string (d, "info.subsystem", "video4linux");
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hal_device_property_set_string (d, "video4linux.device", videodev);
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hal_device_property_set_int (d, "video4linux.version", 2);
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hal_device_property_set_string (d, "info.product", caps.card);
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devinfo_add_enqueue (d, devfs_path, &devinfo_video_handler);
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done:
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if (videodev)
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g_free (videodev);
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return d;
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}
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