MAJOR=4
MINOR=48
DEVNAME=tty48
  *   €l–Ь4э( ©і( 	ЕЂfаB¦-яБѓmжЕ_†I|ҐЏ+БА Ь    /* SPDX-License-Identifier: GPL-2.0-only */
/*
 * v4l2-rect.h - v4l2_rect helper functions
 *
 * Copyright 2014 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
 */

#ifndef _V4L2_RECT_H_
#define _V4L2_RECT_H_

#include <linux/videodev2.h>

/**
 * v4l2_rect_set_size_to() - copy the width/height values.
 * @r: rect whose width and height fields will be set
 * @size: rect containing the width and height fields you need.
 */
static inline void v4l2_rect_set_size_to(struct v4l2_rect *r,
					 const struct v4l2_rect *size)
{
	r->width = size->width;
	r->height = size->height;
}

/**
 * v4l2_rect_set_min_size() - width and height of r should be >= min_size.
 * @r: rect whose width and height will be modified
 * @min_size: rect containing the minimal width and height
 */
static inline void v4l2_rect_set_min_size(struct v4l2_rect *r,
					  const struct v4l2_rect *min_size)
{
	if (r->width < min_size->width)
		r->width = min_size->width;
	if (r->height < min_size->height)
		r->height = min_size->height;
}

/**
 * v4l2_rect_set_max_size() - width and height of r should be <= max_size
 * @r: rect whose width and height will be modified
 * @max_size: rect containing the maximum width and height
 */
static inline void v4l2_rect_set_max_size(struct v4l2_rect *r,
					  const struct v4l2_rect *max_size)
{
	if (r->width > max_size->width)
		r->width = max_size->width;
	if (r->height > max_size->height)
		r->height = max_size->height;
}

/**
 * v4l2_rect_map_inside()- r should be inside boundary.
 * @r: rect that will be modified
 * @boundary: rect containing the boundary for @r
 */
static inline void v4l2_rect_map_inside(struct v4l2_rect *r,
					const struct v4l2_rect *boundary)
{
	v4l2_rect_set_max_size(r, boundary);
	if (r->left < boundary->left)
		r->left = boundary->left;
	if (r->top < boundary->top)
		r->top = boundary->top;
	if (r->left + r->width > boundary->left + boundary->width)
		r->left = boundary->left + boundary->width - r->width;
	if (r->top + r->height > boundary->top + boundary->height)
		r->top = boundary->top + boundary->height - r->height;
}

/**
 * v4l2_rect_same_size() - return true if r1 has the same size as r2
 * @r1: rectangle.
 * @r2: rectangle.
 *
 * Return true if both rectangles have the same size.
 */
static inline bool v4l2_rect_same_size(const struct v4l2_rect *r1,
				       const struct v4l2_rect *r2)
{
	return r1->width == r2->width && r1->height == r2->height;
}

/**
 * v4l2_rect_same_position() - return true if r1 has the same position as r2
 * @r1: rectangle.
 * @r2: rectangle.
 *
 * Return true if both rectangles have the same position
 */
static inline bool v4l2_rect_same_position(const struct v4l2_rect *r1,
					   const struct v4l2_rect *r2)
{
	return r1->top == r2->top && r1->left == r2->left;
}

/**
 * v4l2_rect_equal() - return true if r1 equals r2
 * @r1: rectangle.
 * @r2: rectangle.
 *
 * Return true if both rectangles have the same size and position.
 */
static inline bool v4l2_rect_equal(const struct v4l2_rect *r1,
				   const struct v4l2_rect *r2)
{
	return v4l2_rect_same_size(r1, r2) && v4l2_rect_same_position(r1, r2);
}

/**
 * v4l2_rect_intersect() - calculate the intersection of two rects.
 * @r: intersection of @r1 and @r2.
 * @r1: rectangle.
 * @r2: rectangle.
 */
static inline void v4l2_rect_intersect(struct v4l2_rect *r,
				       const struct v4l2_rect *r1,
				       const struct v4l2_rect *r2)
{
	int right, bottom;

	r->top = max(r1->top, r2->top);
	r->left = max(r1->left, r2->left);
	bottom = min(r1->top + r1->height, r2->top + r2->height);
	right = min(r1->left + r1->width, r2->left + r2->width);
	r->height = max(0, bottom - r->top);
	r->width = max(0, right - r->left);
}

/**
 * v4l2_rect_scale() - scale rect r by to/from
 * @r: rect to be scaled.
 * @from: from rectangle.
 * @to: to rectangle.
 *
 * This scales rectangle @r horizontally by @to->width / @from->width and
 * vertically by @to->height / @from->height.
 *
 * Typically @r is a rectangle inside @from and