2 * Copyright © 2012 Jonas Ådahl
4 * Permission to use, copy, modify, distribute, and sell this software and
5 * its documentation for any purpose is hereby granted without fee, provided
6 * that the above copyright notice appear in all copies and that both that
7 * copyright notice and this permission notice appear in supporting
8 * documentation, and that the name of the copyright holders not be used in
9 * advertising or publicity pertaining to distribution of the software
10 * without specific, written prior permission. The copyright holders make
11 * no representations about the suitability of this software for any
12 * purpose. It is provided "as is" without express or implied warranty.
14 * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
15 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
16 * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
17 * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
18 * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
19 * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
20 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
31 struct motion_params {
32 double dx, dy; /* in units/ms @ 400dpi */
38 filter_dispatch(struct motion_filter *filter,
39 struct motion_params *motion,
40 void *data, uint64_t time);
42 filter_destroy(struct motion_filter *filter);
45 filter_set_speed(struct motion_filter *filter,
48 filter_get_speed(struct motion_filter *filter);
50 typedef double (*accel_profile_func_t)(struct motion_filter *filter,
55 struct motion_filter *
56 create_pointer_accelator_filter(accel_profile_func_t filter);
60 * Pointer acceleration profiles.
64 pointer_accel_profile_linear(struct motion_filter *filter,