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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275/* * 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) * * Note that this must match the layout of struct drm_mode_rect or the damage * helpers like drm_atomic_helper_damage_iter_init() break. */struct drm_rect { int x1, y1, x2, y2;};
/** * DRM_RECT_INIT - initialize a rectangle from x/y/w/h * @x: x coordinate * @y: y coordinate * @w: width * @h: height * * RETURNS: * A new rectangle of the specified size. */#define DRM_RECT_INIT(x, y, w, h) ((struct drm_rect){ \ .x1 = (x), \ .y1 = (y), \ .x2 = (x) + (w), \ .y2 = (y) + (h) })
/** * 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 translated * @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 translated * @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);}
/** * drm_rect_overlap - Check if two rectangles overlap * @a: first rectangle * @b: second rectangle * * RETURNS: * %true if the rectangles overlap, %false otherwise. */static inline bool drm_rect_overlap(const struct drm_rect *a, const struct drm_rect *b){ return (a->x2 > b->x1 && b->x2 > a->x1 && a->y2 > b->y1 && b->y2 > a->y1);}
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