2  * Copyright (C) 2011-2013 Intel Corporation
33  * drm_rect_intersect - intersect two rectangles
46 	r1->x1 = max(r1->x1, r2->x1);  in drm_rect_intersect()
47 	r1->y1 = max(r1->y1, r2->y1);  in drm_rect_intersect()
48 	r1->x2 = min(r1->x2, r2->x2);  in drm_rect_intersect()
49 	r1->y2 = min(r1->y2, r2->y2);  in drm_rect_intersect()
65 	tmp = mul_u32_u32(src, dst - *clip);  in clip_scaled()
78  * drm_rect_clip_scaled - perform a scaled clip operation
84  * the corresponding amounts, retaining the vertical and horizontal scaling
97 	diff = clip->x1 - dst->x1;  in drm_rect_clip_scaled()
102 		src->x1 = src->x2 - new_src_w;  in drm_rect_clip_scaled()
103 		dst->x1 += diff;  in drm_rect_clip_scaled()
105 	diff = clip->y1 - dst->y1;  in drm_rect_clip_scaled()
110 		src->y1 = src->y2 - new_src_h;  in drm_rect_clip_scaled()
111 		dst->y1 += diff;  in drm_rect_clip_scaled()
113 	diff = dst->x2 - clip->x2;  in drm_rect_clip_scaled()
118 		src->x2 = src->x1 + new_src_w;  in drm_rect_clip_scaled()
119 		dst->x2 -= diff;  in drm_rect_clip_scaled()
121 	diff = dst->y2 - clip->y2;  in drm_rect_clip_scaled()
126 		src->y2 = src->y1 + new_src_h;  in drm_rect_clip_scaled()
127 		dst->y2 -= diff;  in drm_rect_clip_scaled()
139 		return -EINVAL;  in drm_calc_scale()
153  * drm_rect_calc_hscale - calculate the horizontal scaling factor
156  * @min_hscale: minimum allowed horizontal scaling factor
157  * @max_hscale: maximum allowed horizontal scaling factor
159  * Calculate the horizontal scaling factor as
162  * If the scale is below 1 << 16, round down. If the scale is above
167  * The horizontal scaling factor, or errno of out of limits.
181 		return -ERANGE;  in drm_rect_calc_hscale()
188  * drm_rect_calc_vscale - calculate the vertical scaling factor
191  * @min_vscale: minimum allowed vertical scaling factor
192  * @max_vscale: maximum allowed vertical scaling factor
194  * Calculate the vertical scaling factor as
197  * If the scale is below 1 << 16, round down. If the scale is above
202  * The vertical scaling factor, or errno of out of limits.
216 		return -ERANGE;  in drm_rect_calc_vscale()
223  * drm_rect_debug_print - print the rectangle information
238  * drm_rect_rotate - Rotate the rectangle
263 			r->x1 = width - tmp.x2;  in drm_rect_rotate()
264 			r->x2 = width - tmp.x1;  in drm_rect_rotate()
268 			r->y1 = height - tmp.y2;  in drm_rect_rotate()
269 			r->y2 = height - tmp.y1;  in drm_rect_rotate()
278 		r->x1 = tmp.y1;  in drm_rect_rotate()
279 		r->x2 = tmp.y2;  in drm_rect_rotate()
280 		r->y1 = width - tmp.x2;  in drm_rect_rotate()
281 		r->y2 = width - tmp.x1;  in drm_rect_rotate()
285 		r->x1 = width - tmp.x2;  in drm_rect_rotate()
286 		r->x2 = width - tmp.x1;  in drm_rect_rotate()
287 		r->y1 = height - tmp.y2;  in drm_rect_rotate()
288 		r->y2 = height - tmp.y1;  in drm_rect_rotate()
292 		r->x1 = height - tmp.y2;  in drm_rect_rotate()
293 		r->x2 = height - tmp.y1;  in drm_rect_rotate()
294 		r->y1 = tmp.x1;  in drm_rect_rotate()
295 		r->y2 = tmp.x2;  in drm_rect_rotate()
304  * drm_rect_rotate_inv - Inverse rotate the rectangle
338 		r->x1 = width - tmp.y2;  in drm_rect_rotate_inv()
339 		r->x2 = width - tmp.y1;  in drm_rect_rotate_inv()
340 		r->y1 = tmp.x1;  in drm_rect_rotate_inv()
341 		r->y2 = tmp.x2;  in drm_rect_rotate_inv()
345 		r->x1 = width - tmp.x2;  in drm_rect_rotate_inv()
346 		r->x2 = width - tmp.x1;  in drm_rect_rotate_inv()
347 		r->y1 = height - tmp.y2;  in drm_rect_rotate_inv()
348 		r->y2 = height - tmp.y1;  in drm_rect_rotate_inv()
352 		r->x1 = tmp.y1;  in drm_rect_rotate_inv()
353 		r->x2 = tmp.y2;  in drm_rect_rotate_inv()
354 		r->y1 = height - tmp.x2;  in drm_rect_rotate_inv()
355 		r->y2 = height - tmp.x1;  in drm_rect_rotate_inv()
365 			r->x1 = width - tmp.x2;  in drm_rect_rotate_inv()
366 			r->x2 = width - tmp.x1;  in drm_rect_rotate_inv()
370 			r->y1 = height - tmp.y2;  in drm_rect_rotate_inv()
371 			r->y2 = height - tmp.y1;  in drm_rect_rotate_inv()