/*
* Virtual Video driver - This code emulates a real video device with v4l2 api
*
* Copyright (c) 2006 by:
* Mauro Carvalho Chehab <mchehab--a.t--infradead.org>
* Ted Walther <ted--a.t--enumera.com>
* John Sokol <sokol--a.t--videotechnology.com>
* http://v4l.videotechnology.com/
*
* Conversion to videobuf2 by Pawel Osciak & Marek Szyprowski
* Copyright (c) 2010 Samsung Electronics
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the BSD Licence, GNU General Public License
* as published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version
*/
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/font.h>
#include <linux/mutex.h>
#include <linux/videodev2.h>
#include <linux/kthread.h>
#include <linux/freezer.h>
#include <media/videobuf2-vmalloc.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-fh.h>
#include <media/v4l2-event.h>
#include <media/v4l2-common.h>
#define VIVI_MODULE_NAME "vivi"
/* Maximum allowed frame rate
*
* Vivi will allow setting timeperframe in [1/FPS_MAX - FPS_MAX/1] range.
*
* Ideally FPS_MAX should be infinity, i.e. practically UINT_MAX, but that
* might hit application errors when they manipulate these values.
*
* Besides, for tpf < 1ms image-generation logic should be changed, to avoid
* producing frames with equal content.
*/
#define FPS_MAX 1000
#define MAX_WIDTH 1920
