1 files changed, 51 insertions, 17 deletions

diff --git a/include/media/v4l2-rect.h b/include/media/v4l2-rect.h
index d2125f0cc7cd..bd587d0c0dc3 100644
--- a/include/media/v4l2-rect.h
+++ b/include/media/v4l2-rect.h
@@ -1,20 +1,8 @@
+/* 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.
- *
- * This program is free software; you may redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
- * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- * SOFTWARE.
  */
 
 #ifndef _V4L2_RECT_H_
@@ -75,10 +63,10 @@ static inline void v4l2_rect_map_inside(struct v4l2_rect *r,
 		r->left = boundary->left;
 	if (r->top < boundary->top)
 		r->top = boundary->top;
-	if (r->left + r->width > boundary->width)
-		r->left = boundary->width - r->width;
-	if (r->top + r->height > boundary->height)
-		r->top = boundary->height - r->height;
+	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;
 }
 
 /**
@@ -95,6 +83,32 @@ static inline bool v4l2_rect_same_size(const struct v4l2_rect *r1,
 }
 
 /**
+ * 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.
@@ -170,4 +184,24 @@ static inline bool v4l2_rect_overlap(const struct v4l2_rect *r1,
 	return true;
 }
 
+/**
+ * v4l2_rect_enclosed() - is r1 enclosed in r2?
+ * @r1: rectangle.
+ * @r2: rectangle.
+ *
+ * Returns true if @r1 is enclosed in @r2.
+ */
+static inline bool v4l2_rect_enclosed(struct v4l2_rect *r1,
+				      struct v4l2_rect *r2)
+{
+	if (r1->left < r2->left || r1->top < r2->top)
+		return false;
+	if (r1->left + r1->width > r2->left + r2->width)
+		return false;
+	if (r1->top + r1->height > r2->top + r2->height)
+		return false;
+
+	return true;
+}
+
 #endif