mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
240 lines
6.7 KiB
240 lines
6.7 KiB
/* |
|
* Copyright (C) 2011-2013 Intel Corporation |
|
* |
|
* Permission is hereby granted, free of charge, to any person obtaining a |
|
* copy of this software and associated documentation files (the "Software"), |
|
* to deal in the Software without restriction, including without limitation |
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense, |
|
* and/or sell copies of the Software, and to permit persons to whom the |
|
* Software is furnished to do so, subject to the following conditions: |
|
* |
|
* The above copyright notice and this permission notice (including the next |
|
* paragraph) shall be included in all copies or substantial portions of the |
|
* Software. |
|
* |
|
* 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 DRM_RECT_H |
|
#define DRM_RECT_H |
|
|
|
#include <linux/types.h> |
|
|
|
/** |
|
* DOC: rect utils |
|
* |
|
* Utility functions to help manage rectangular areas for |
|
* clipping, scaling, etc. calculations. |
|
*/ |
|
|
|
/** |
|
* struct drm_rect - two dimensional rectangle |
|
* @x1: horizontal starting coordinate (inclusive) |
|
* @x2: horizontal ending coordinate (exclusive) |
|
* @y1: vertical starting coordinate (inclusive) |
|
* @y2: vertical ending coordinate (exclusive) |
|
*/ |
|
struct drm_rect { |
|
int x1, y1, x2, y2; |
|
}; |
|
|
|
/** |
|
* DRM_RECT_FMT - printf string for &struct drm_rect |
|
*/ |
|
#define DRM_RECT_FMT "%dx%d%+d%+d" |
|
/** |
|
* DRM_RECT_ARG - printf arguments for &struct drm_rect |
|
* @r: rectangle struct |
|
*/ |
|
#define DRM_RECT_ARG(r) drm_rect_width(r), drm_rect_height(r), (r)->x1, (r)->y1 |
|
|
|
/** |
|
* DRM_RECT_FP_FMT - printf string for &struct drm_rect in 16.16 fixed point |
|
*/ |
|
#define DRM_RECT_FP_FMT "%d.%06ux%d.%06u%+d.%06u%+d.%06u" |
|
/** |
|
* DRM_RECT_FP_ARG - printf arguments for &struct drm_rect in 16.16 fixed point |
|
* @r: rectangle struct |
|
* |
|
* This is useful for e.g. printing plane source rectangles, which are in 16.16 |
|
* fixed point. |
|
*/ |
|
#define DRM_RECT_FP_ARG(r) \ |
|
drm_rect_width(r) >> 16, ((drm_rect_width(r) & 0xffff) * 15625) >> 10, \ |
|
drm_rect_height(r) >> 16, ((drm_rect_height(r) & 0xffff) * 15625) >> 10, \ |
|
(r)->x1 >> 16, (((r)->x1 & 0xffff) * 15625) >> 10, \ |
|
(r)->y1 >> 16, (((r)->y1 & 0xffff) * 15625) >> 10 |
|
|
|
/** |
|
* drm_rect_init - initialize the rectangle from x/y/w/h |
|
* @r: rectangle |
|
* @x: x coordinate |
|
* @y: y coordinate |
|
* @width: width |
|
* @height: height |
|
*/ |
|
static inline void drm_rect_init(struct drm_rect *r, int x, int y, |
|
int width, int height) |
|
{ |
|
r->x1 = x; |
|
r->y1 = y; |
|
r->x2 = x + width; |
|
r->y2 = y + height; |
|
} |
|
|
|
/** |
|
* drm_rect_adjust_size - adjust the size of the rectangle |
|
* @r: rectangle to be adjusted |
|
* @dw: horizontal adjustment |
|
* @dh: vertical adjustment |
|
* |
|
* Change the size of rectangle @r by @dw in the horizontal direction, |
|
* and by @dh in the vertical direction, while keeping the center |
|
* of @r stationary. |
|
* |
|
* Positive @dw and @dh increase the size, negative values decrease it. |
|
*/ |
|
static inline void drm_rect_adjust_size(struct drm_rect *r, int dw, int dh) |
|
{ |
|
r->x1 -= dw >> 1; |
|
r->y1 -= dh >> 1; |
|
r->x2 += (dw + 1) >> 1; |
|
r->y2 += (dh + 1) >> 1; |
|
} |
|
|
|
/** |
|
* drm_rect_translate - translate the rectangle |
|
* @r: rectangle to be tranlated |
|
* @dx: horizontal translation |
|
* @dy: vertical translation |
|
* |
|
* Move rectangle @r by @dx in the horizontal direction, |
|
* and by @dy in the vertical direction. |
|
*/ |
|
static inline void drm_rect_translate(struct drm_rect *r, int dx, int dy) |
|
{ |
|
r->x1 += dx; |
|
r->y1 += dy; |
|
r->x2 += dx; |
|
r->y2 += dy; |
|
} |
|
|
|
/** |
|
* drm_rect_translate_to - translate the rectangle to an absolute position |
|
* @r: rectangle to be tranlated |
|
* @x: horizontal position |
|
* @y: vertical position |
|
* |
|
* Move rectangle @r to @x in the horizontal direction, |
|
* and to @y in the vertical direction. |
|
*/ |
|
static inline void drm_rect_translate_to(struct drm_rect *r, int x, int y) |
|
{ |
|
drm_rect_translate(r, x - r->x1, y - r->y1); |
|
} |
|
|
|
/** |
|
* drm_rect_downscale - downscale a rectangle |
|
* @r: rectangle to be downscaled |
|
* @horz: horizontal downscale factor |
|
* @vert: vertical downscale factor |
|
* |
|
* Divide the coordinates of rectangle @r by @horz and @vert. |
|
*/ |
|
static inline void drm_rect_downscale(struct drm_rect *r, int horz, int vert) |
|
{ |
|
r->x1 /= horz; |
|
r->y1 /= vert; |
|
r->x2 /= horz; |
|
r->y2 /= vert; |
|
} |
|
|
|
/** |
|
* drm_rect_width - determine the rectangle width |
|
* @r: rectangle whose width is returned |
|
* |
|
* RETURNS: |
|
* The width of the rectangle. |
|
*/ |
|
static inline int drm_rect_width(const struct drm_rect *r) |
|
{ |
|
return r->x2 - r->x1; |
|
} |
|
|
|
/** |
|
* drm_rect_height - determine the rectangle height |
|
* @r: rectangle whose height is returned |
|
* |
|
* RETURNS: |
|
* The height of the rectangle. |
|
*/ |
|
static inline int drm_rect_height(const struct drm_rect *r) |
|
{ |
|
return r->y2 - r->y1; |
|
} |
|
|
|
/** |
|
* drm_rect_visible - determine if the rectangle is visible |
|
* @r: rectangle whose visibility is returned |
|
* |
|
* RETURNS: |
|
* %true if the rectangle is visible, %false otherwise. |
|
*/ |
|
static inline bool drm_rect_visible(const struct drm_rect *r) |
|
{ |
|
return drm_rect_width(r) > 0 && drm_rect_height(r) > 0; |
|
} |
|
|
|
/** |
|
* drm_rect_equals - determine if two rectangles are equal |
|
* @r1: first rectangle |
|
* @r2: second rectangle |
|
* |
|
* RETURNS: |
|
* %true if the rectangles are equal, %false otherwise. |
|
*/ |
|
static inline bool drm_rect_equals(const struct drm_rect *r1, |
|
const struct drm_rect *r2) |
|
{ |
|
return r1->x1 == r2->x1 && r1->x2 == r2->x2 && |
|
r1->y1 == r2->y1 && r1->y2 == r2->y2; |
|
} |
|
|
|
/** |
|
* drm_rect_fp_to_int - Convert a rect in 16.16 fixed point form to int form. |
|
* @dst: rect to be stored the converted value |
|
* @src: rect in 16.16 fixed point form |
|
*/ |
|
static inline void drm_rect_fp_to_int(struct drm_rect *dst, |
|
const struct drm_rect *src) |
|
{ |
|
drm_rect_init(dst, src->x1 >> 16, src->y1 >> 16, |
|
drm_rect_width(src) >> 16, |
|
drm_rect_height(src) >> 16); |
|
} |
|
|
|
bool drm_rect_intersect(struct drm_rect *r, const struct drm_rect *clip); |
|
bool drm_rect_clip_scaled(struct drm_rect *src, struct drm_rect *dst, |
|
const struct drm_rect *clip); |
|
int drm_rect_calc_hscale(const struct drm_rect *src, |
|
const struct drm_rect *dst, |
|
int min_hscale, int max_hscale); |
|
int drm_rect_calc_vscale(const struct drm_rect *src, |
|
const struct drm_rect *dst, |
|
int min_vscale, int max_vscale); |
|
void drm_rect_debug_print(const char *prefix, |
|
const struct drm_rect *r, bool fixed_point); |
|
void drm_rect_rotate(struct drm_rect *r, |
|
int width, int height, |
|
unsigned int rotation); |
|
void drm_rect_rotate_inv(struct drm_rect *r, |
|
int width, int height, |
|
unsigned int rotation); |
|
|
|
#endif
|
|
|