/usr/include/libv4l-plugin.h is in libv4l-dev 1.6.0-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 | /*
* Copyright (C) 2010 Nokia Corporation <multimedia@maemo.org>
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __LIBV4L_PLUGIN_H
#define __LIBV4L_PLUGIN_H
#include <sys/types.h>
/* Structure libv4l_dev_ops holds the calls from libv4ls to video nodes.
They can be normal open/close/ioctl etc. or any of them may be replaced
with a callback by a loaded plugin.
*/
struct libv4l_dev_ops {
void * (*init)(int fd);
void (*close)(void *dev_ops_priv);
int (*ioctl)(void *dev_ops_priv, int fd, unsigned long int request, void *arg);
ssize_t (*read)(void *dev_ops_priv, int fd, void *buffer, size_t n);
ssize_t (*write)(void *dev_ops_priv, int fd, const void *buffer, size_t n);
/* For future plugin API extension, plugins implementing the current API
must set these all to NULL, as future versions may check for these */
void (*reserved1)(void);
void (*reserved2)(void);
void (*reserved3)(void);
void (*reserved4)(void);
void (*reserved5)(void);
void (*reserved6)(void);
void (*reserved7)(void);
};
#endif
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