mirror of
https://gitlab.freedesktop.org/libinput/libinput.git
synced 2025-12-27 23:10:07 +01:00
26ceea3e3b
Those touchpads presents an actual lower resolution that what is advertised. We see some jumps from the cursor due to the big steps in X and Y when we are receiving data. For instance, we receive: E: 13.471932 0003 0000 16366 # EV_ABS / ABS_X 16366 E: 13.471932 0003 0001 9591 # EV_ABS / ABS_Y 9591 E: 13.471932 0000 0000 0000 # ------------ SYN_REPORT (0) ---------- E: 13.479924 0003 0000 16316 # EV_ABS / ABS_X 16316 E: 13.479924 0003 0001 9491 # EV_ABS / ABS_Y 9491 E: 13.479924 0000 0000 0000 # ------------ SYN_REPORT (0) ---------- E: 13.487939 0003 0000 16271 # EV_ABS / ABS_X 16271 E: 13.487939 0003 0001 9403 # EV_ABS / ABS_Y 9403 E: 13.487939 0000 0000 0000 # ------------ SYN_REPORT (0) ---------- -> jumps of ~50 in X in each report, and ~100 for Y. Apply a factor to minimize those jumps at low speed, and try keeping the same feeling as regular touchpads at high speed. It still feels slower but it is usable at least Signed-off-by: Benjamin Tissoires <benjamin.tissoires@gmail.com> Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net> Tested-by: Vasily Khoruzhick <anarsoul@gmail.com> Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
75 lines
2.3 KiB
C
75 lines
2.3 KiB
C
/*
|
|
* Copyright © 2012 Jonas Ådahl
|
|
*
|
|
* Permission to use, copy, modify, distribute, and sell this software and
|
|
* its documentation for any purpose is hereby granted without fee, provided
|
|
* that the above copyright notice appear in all copies and that both that
|
|
* copyright notice and this permission notice appear in supporting
|
|
* documentation, and that the name of the copyright holders not be used in
|
|
* advertising or publicity pertaining to distribution of the software
|
|
* without specific, written prior permission. The copyright holders make
|
|
* no representations about the suitability of this software for any
|
|
* purpose. It is provided "as is" without express or implied warranty.
|
|
*
|
|
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
|
|
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
|
* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
|
|
* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
|
|
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
|
|
* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
|
|
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
|
|
#ifndef FILTER_H
|
|
#define FILTER_H
|
|
|
|
#include "config.h"
|
|
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
|
|
#include "libinput-private.h"
|
|
|
|
struct motion_filter;
|
|
|
|
struct normalized_coords
|
|
filter_dispatch(struct motion_filter *filter,
|
|
const struct normalized_coords *unaccelerated,
|
|
void *data, uint64_t time);
|
|
void
|
|
filter_destroy(struct motion_filter *filter);
|
|
|
|
bool
|
|
filter_set_speed(struct motion_filter *filter,
|
|
double speed);
|
|
double
|
|
filter_get_speed(struct motion_filter *filter);
|
|
|
|
typedef double (*accel_profile_func_t)(struct motion_filter *filter,
|
|
void *data,
|
|
double velocity,
|
|
uint64_t time);
|
|
|
|
struct motion_filter *
|
|
create_pointer_accelerator_filter(accel_profile_func_t filter);
|
|
|
|
/*
|
|
* Pointer acceleration profiles.
|
|
*/
|
|
|
|
double
|
|
pointer_accel_profile_linear(struct motion_filter *filter,
|
|
void *data,
|
|
double speed_in,
|
|
uint64_t time);
|
|
double
|
|
touchpad_accel_profile_linear(struct motion_filter *filter,
|
|
void *data,
|
|
double speed_in,
|
|
uint64_t time);
|
|
double
|
|
touchpad_lenovo_x230_accel_profile(struct motion_filter *filter,
|
|
void *data,
|
|
double speed_in,
|
|
uint64_t time);
|
|
#endif /* FILTER_H */
|