Commit 77f9a479 authored by Peter Hutterer's avatar Peter Hutterer
Browse files

filter: always init a delta smoothener for 10/10ms on trackpoints

If the trackpoint gives us deltas with less than 10ms intervals, something is
wrong. Could be bad hardware, a glitch in the matrix or a discontinuity in
the otherwise appropriately named time-space continuum. Usually it's the

Let's always set up trackpoint delta smoothening for 10ms to improve the
pointer speed calculation and avoid jerky behaviors. i.e. if a trackpoint
delta comes in below 10ms, pretend it came in with a 10ms interval for
calculating the speed.

Fixes #104

Signed-off-by: Peter Hutterer's avatarPeter Hutterer <>
parent 82f3e77f
Pipeline #2970 failed with stages
in 109 minutes and 46 seconds
......@@ -185,6 +185,7 @@ struct motion_filter *
create_pointer_accelerator_filter_trackpoint(double multiplier)
struct trackpoint_accelerator *filter;
struct pointer_delta_smoothener *smoothener;
assert(multiplier > 0.0);
......@@ -210,5 +211,10 @@ create_pointer_accelerator_filter_trackpoint(double multiplier)
filter->base.interface = &accelerator_interface_trackpoint;
smoothener = zalloc(sizeof(*smoothener));
smoothener->threshold = ms2us(10);
smoothener->value = ms2us(10);
filter->trackers.smoothener = smoothener;
return &filter->base;
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