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libinput-analyze-per-slot-delta(1) FreeBSD General Commands Manual
NAME
libinput-analyze-per-slot-delta - analyze the per-event delta movement
for touch slots
SYNOPSIS
libinput analyze per-slot-delta [--help] [options] recording.yml
DESCRIPTION
The libinput analyze per-slot-delta tool analyzes a recording made with
libinput record and prints the delta movement per touch slot.
This is a debugging tool only, its output may change at any time. Do
not rely on the output.
OPTIONS
--help Print help
--ignore-below=<units or mm>
Ignore any movement below the given threshold. The threshold is
in mm if --use-mm is selected or in device units otherwise.
--threshold=<units or mm>
Color any movement above this threshold in red. The threshold
is in mm if --use-mm is selected or in device units otherwise.
--use-mm
Print data in mm instead of device units
--use-st
Use the single-touch ABS_X/ABS_Y instead of the multitouch axes
--use-absolute
Print absolute coordinates, not deltas
OUTPUT
An example output for a single finger touch on a touchpad supporting
two slots is below. This output is with the use of the --use-mm flag.
0.000000 +0ms TOU: ++++++ | ************* |
0.021900 +21ms TOU: -><?> +1.10/+0.14 | ************* |
0.033468 +11ms TOU: -><?> +1.15/+0.19 | ************* |
0.043856 +10ms TOU: -><?> +1.76/+0.22 | ************* |
0.053237 +9ms TOU: -><?> +2.20/+0.19 | ************* |
The entry ++++++ indicates a finger has been put down, ------ indicates
the finger has lifted. The left-most column is the absolute timestamp
in seconds.microseconds followed by the relative time of the event to
the previous event.
The word TOU in this example represents BTN_TOUCH, similar
abbreviations exist for BTN_TOOL_DOUBLETAP, BTN_TOOL_TRIPLETAP,
BTN_TOOL_QUADTAP, and BTN_TOOL_QUINTTAP.
The arrows indicate the approximate direction on a 16-point compass, in
this example EastSouthEast.
Each multitouch slot supported by the hardware has one column, where
is not currently down.
LIBINPUT
Part of the libinput(1) suite
libinput-analyze-per-slot-delta(1)