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/*
* 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>
/* The HW DPI rate we normalize to before calculating pointer acceleration */
#define DEFAULT_MOUSE_DPI 1000
struct motion_params {
double dx, dy; /* in units/ms @ DEFAULT_MOUSE_DPI resolution */
};
struct motion_filter;
void
filter_dispatch(struct motion_filter *filter,
struct motion_params *motion,
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);
#endif /* FILTER_H */
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