2  * Copyright (C) 2011-2013 Intel Corporation
31  * drm_rect_intersect - intersect two rectangles
44 	r1->x1 = max(r1->x1, r2->x1);  in drm_rect_intersect()
45 	r1->y1 = max(r1->y1, r2->y1);  in drm_rect_intersect()
46 	r1->x2 = min(r1->x2, r2->x2);  in drm_rect_intersect()
47 	r1->y2 = min(r1->y2, r2->y2);  in drm_rect_intersect()
60 	tmp = mul_u32_u32(src, dst - clip);  in clip_scaled()
73  * drm_rect_clip_scaled - perform a scaled clip operation
90 	diff = clip->x1 - dst->x1;  in drm_rect_clip_scaled()
95 		src->x1 = clamp_t(int64_t, src->x2 - new_src_w, INT_MIN, INT_MAX);  in drm_rect_clip_scaled()
96 		dst->x1 = clip->x1;  in drm_rect_clip_scaled()
98 	diff = clip->y1 - dst->y1;  in drm_rect_clip_scaled()
103 		src->y1 = clamp_t(int64_t, src->y2 - new_src_h, INT_MIN, INT_MAX);  in drm_rect_clip_scaled()
104 		dst->y1 = clip->y1;  in drm_rect_clip_scaled()
106 	diff = dst->x2 - clip->x2;  in drm_rect_clip_scaled()
111 		src->x2 = clamp_t(int64_t, src->x1 + new_src_w, INT_MIN, INT_MAX);  in drm_rect_clip_scaled()
112 		dst->x2 = clip->x2;  in drm_rect_clip_scaled()
114 	diff = dst->y2 - clip->y2;  in drm_rect_clip_scaled()
119 		src->y2 = clamp_t(int64_t, src->y1 + new_src_h, INT_MIN, INT_MAX);  in drm_rect_clip_scaled()
120 		dst->y2 = clip->y2;  in drm_rect_clip_scaled()
132 		return -EINVAL;  in drm_calc_scale()
146  * drm_rect_calc_hscale - calculate the horizontal scaling factor
149  * @min_hscale: minimum allowed horizontal scaling factor
150  * @max_hscale: maximum allowed horizontal scaling factor
152  * Calculate the horizontal scaling factor as
155  * If the scale is below 1 << 16, round down. If the scale is above
160  * The horizontal scaling factor, or errno of out of limits.
174 		return -ERANGE;  in drm_rect_calc_hscale()
181  * drm_rect_calc_vscale - calculate the vertical scaling factor
184  * @min_vscale: minimum allowed vertical scaling factor
185  * @max_vscale: maximum allowed vertical scaling factor
187  * Calculate the vertical scaling factor as
190  * If the scale is below 1 << 16, round down. If the scale is above
195  * The vertical scaling factor, or errno of out of limits.
209 		return -ERANGE;  in drm_rect_calc_vscale()
216  * drm_calc_hscale_relaxed - calculate the horizontal scaling factor
219  * @min_hscale: minimum allowed horizontal scaling factor
220  * @max_hscale: maximum allowed horizontal scaling factor
222  * Calculate the horizontal scaling factor as
225  * If the calculated scaling factor is below @min_vscale,
228  * If the calculated scaling factor is above @max_vscale,
231  * If the scale is below 1 << 16, round down. If the scale is above
236  * The horizontal scaling factor.
252 		drm_rect_adjust_size(dst, max_dst_w - dst_w, 0);  in drm_rect_calc_hscale_relaxed()
260 		drm_rect_adjust_size(src, max_src_w - src_w, 0);  in drm_rect_calc_hscale_relaxed()
270  * drm_rect_calc_vscale_relaxed - calculate the vertical scaling factor
273  * @min_vscale: minimum allowed vertical scaling factor
274  * @max_vscale: maximum allowed vertical scaling factor
276  * Calculate the vertical scaling factor as
279  * If the calculated scaling factor is below @min_vscale,
282  * If the calculated scaling factor is above @max_vscale,
285  * If the scale is below 1 << 16, round down. If the scale is above
290  * The vertical scaling factor.
306 		drm_rect_adjust_size(dst, 0, max_dst_h - dst_h);  in drm_rect_calc_vscale_relaxed()
314 		drm_rect_adjust_size(src, 0, max_src_h - src_h);  in drm_rect_calc_vscale_relaxed()
324  * drm_rect_debug_print - print the rectangle information
339  * drm_rect_rotate - Rotate the rectangle
364 			r->x1 = width - tmp.x2;  in drm_rect_rotate()
365 			r->x2 = width - tmp.x1;  in drm_rect_rotate()
369 			r->y1 = height - tmp.y2;  in drm_rect_rotate()
370 			r->y2 = height - tmp.y1;  in drm_rect_rotate()
379 		r->x1 = tmp.y1;  in drm_rect_rotate()
380 		r->x2 = tmp.y2;  in drm_rect_rotate()
381 		r->y1 = width - tmp.x2;  in drm_rect_rotate()
382 		r->y2 = width - tmp.x1;  in drm_rect_rotate()
386 		r->x1 = width - tmp.x2;  in drm_rect_rotate()
387 		r->x2 = width - tmp.x1;  in drm_rect_rotate()
388 		r->y1 = height - tmp.y2;  in drm_rect_rotate()
389 		r->y2 = height - tmp.y1;  in drm_rect_rotate()
393 		r->x1 = height - tmp.y2;  in drm_rect_rotate()
394 		r->x2 = height - tmp.y1;  in drm_rect_rotate()
395 		r->y1 = tmp.x1;  in drm_rect_rotate()
396 		r->y2 = tmp.x2;  in drm_rect_rotate()
405  * drm_rect_rotate_inv - Inverse rotate the rectangle
439 		r->x1 = width - tmp.y2;  in drm_rect_rotate_inv()
440 		r->x2 = width - tmp.y1;  in drm_rect_rotate_inv()
441 		r->y1 = tmp.x1;  in drm_rect_rotate_inv()
442 		r->y2 = tmp.x2;  in drm_rect_rotate_inv()
446 		r->x1 = width - tmp.x2;  in drm_rect_rotate_inv()
447 		r->x2 = width - tmp.x1;  in drm_rect_rotate_inv()
448 		r->y1 = height - tmp.y2;  in drm_rect_rotate_inv()
449 		r->y2 = height - tmp.y1;  in drm_rect_rotate_inv()
453 		r->x1 = tmp.y1;  in drm_rect_rotate_inv()
454 		r->x2 = tmp.y2;  in drm_rect_rotate_inv()
455 		r->y1 = height - tmp.x2;  in drm_rect_rotate_inv()
456 		r->y2 = height - tmp.x1;  in drm_rect_rotate_inv()
466 			r->x1 = width - tmp.x2;  in drm_rect_rotate_inv()
467 			r->x2 = width - tmp.x1;  in drm_rect_rotate_inv()
471 			r->y1 = height - tmp.y2;  in drm_rect_rotate_inv()
472 			r->y2 = height - tmp.y1;  in drm_rect_rotate_inv()