81 lines
2.1 KiB
C
81 lines
2.1 KiB
C
/*
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Copyright (C) 2014 by Leonhard Oelke <leonhard@in-verted.de>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <inttypes.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* Initialize udev system to watch for device events
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*
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* @return monitor object, or NULL on error
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*/
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void *v4l2_init_udev(void);
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/**
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* Unref the udev system
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*
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* This will also remove any registered callbacks if there are any
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*
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* @param monitor monitor object
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*/
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void v4l2_unref_udev(void *monitor);
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/**
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* Callback when a device was added.
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*
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* @param dev device node of the device that was added
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* @param userdata pointer to userdata specified when registered
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*/
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typedef void (*v4l2_device_added_cb)(const char *dev, void *userdata);
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/**
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* Callback when a device was removed.
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*
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* @param dev device node of the device that was removed
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* @param userdata pointer to userdata specified when registered
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*/
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typedef void (*v4l2_device_removed_cb)(const char *dev, void *userdata);
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/**
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* Register the device added callback
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*
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* @param monitor monitor object
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* @param cb the function that should be called
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* @param userdata pointer to userdata that should be passed to the callback
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*/
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void v4l2_set_device_added_callback(void *monitor, v4l2_device_added_cb cb,
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void *userdata);
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/**
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* Register the device remove callback
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*
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* @param monitor monitor object
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* @param cb the function that should be called
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* @param userdata pointer to userdata that should be passed to the callback
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*/
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void v4l2_set_device_removed_callback(void *monitor, v4l2_device_removed_cb cb,
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void *userdata);
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#ifdef __cplusplus
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}
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#endif
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