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bdd4264d61
We used to normalize all deltas to equivalents of a 1000dpi mouse before passing it into the acceleration functions. This has a bunch of drawbacks, not least that we already have to un-normalize back into device units for a few devices already (trackpoints, tablet, low-dpi mice). Switch the filter code over to use device units, relying on the dpi set earlier during filter creation to convert to normalized. To make things easy, the output of the filter code is still normalized data, i.e. data ready to be handed to the libinput caller. No effective functional changes. For touchpads, we still send normalized coordinates (for now, anyway). For the various filter methods, we either drop the places where we unnormalized before or we normalize where needed. Two possible changes: for trackpoints and low-dpi mice we had a max dpi factor of 1.0 before - now we don't anymore. This was only the case if a low-dpi mouse had more than 1000dpi (never true) or a trackpoint had a const accel lower than 1.0 (yeah, whatever). Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net> Reviewed-by: Hans de Goede <hdegoede@redhat.com>
54 lines
1.9 KiB
C
54 lines
1.9 KiB
C
/*
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* Copyright © 2012 Jonas Ådahl
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#ifndef FILTER_PRIVATE_H
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#define FILTER_PRIVATE_H
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#include "config.h"
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#include "filter.h"
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struct motion_filter_interface {
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enum libinput_config_accel_profile type;
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struct normalized_coords (*filter)(
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struct motion_filter *filter,
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const struct device_float_coords *unaccelerated,
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void *data, uint64_t time);
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struct normalized_coords (*filter_constant)(
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struct motion_filter *filter,
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const struct device_float_coords *unaccelerated,
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void *data, uint64_t time);
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void (*restart)(struct motion_filter *filter,
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void *data,
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uint64_t time);
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void (*destroy)(struct motion_filter *filter);
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bool (*set_speed)(struct motion_filter *filter,
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double speed_adjustment);
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};
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struct motion_filter {
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double speed_adjustment; /* normalized [-1, 1] */
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struct motion_filter_interface *interface;
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};
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#endif
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