tools: add a tool to analyze the finger count from a recording

Given a libinput recording, print the timestamps of any finger changes, i.e.
which slots are currently logically down. For example:

Timestamp | Rel time |     Slots     |
--------------------------------------
 0.000000 |  +0.000s | + |   |   |   |
 0.454631 |  +0.454s |   |   |   |   |
 5.065401 |  +4.610s | + |   |   |   |
 6.140281 |  +1.074s | + | + |   |   |
 7.410377 |  +1.270s |   | + |   |   |
 7.420200 |  +0.009s |   |   |   |   |
11.233108 |  +3.812s | + | + |   |   |
11.850206 |  +0.617s |   |   |   |   |
13.827740 |  +1.977s | + |   |   |   |
14.704027 |  +0.876s | + | + |   |   |
16.050577 |  +1.346s | + |   |   |   |
16.905186 |  +0.854s |   |   |   |   |

This data is available with the per-slot-delta tool but the output here is
more compressed, making it easier to detect stuck fingers. Pressure
thresholds are not currently supported.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This commit is contained in:
Peter Hutterer 2021-01-25 08:17:21 +10:00
parent 9925594257
commit ff598741a9
5 changed files with 254 additions and 0 deletions

View file

@ -110,6 +110,7 @@ intended to be run by users.
%{_libexecdir}/libinput/libinput-replay
%{_libexecdir}/libinput/libinput-analyze
%{_libexecdir}/libinput/libinput-analyze-per-slot-delta
%{_libexecdir}/libinput/libinput-analyze-touch-down-state
%{_mandir}/man1/libinput-debug-gui.1*
%{_mandir}/man1/libinput-debug-tablet.1*
%{_mandir}/man1/libinput-measure.1*
@ -125,6 +126,7 @@ intended to be run by users.
%{_mandir}/man1/libinput-replay.1*
%{_mandir}/man1/libinput-analyze.1*
%{_mandir}/man1/libinput-analyze-per-slot-delta.1*
%{_mandir}/man1/libinput-analyze-touch-down-state.1*
%files test
%{_libexecdir}/libinput/libinput-test-suite

View file

@ -560,6 +560,7 @@ configure_file(input : 'tools/libinput-analyze.man',
src_python_tools = files(
'tools/libinput-analyze-per-slot-delta.py',
'tools/libinput-analyze-touch-down-state.py',
'tools/libinput-measure-fuzz.py',
'tools/libinput-measure-touchpad-size.py',
'tools/libinput-measure-touchpad-tap.py',
@ -589,6 +590,7 @@ src_man = files(
'tools/libinput-measure-touchpad-pressure.man',
'tools/libinput-measure-touch-size.man',
'tools/libinput-analyze-per-slot-delta.man',
'tools/libinput-analyze-touch-down-state.man',
)
foreach m : src_man

View file

@ -0,0 +1,45 @@
.TH libinput-analyze-touch-down-state "1"
.SH NAME
libinput\-analyze\-touch\-down\-state \- analyze the touch states
.SH SYNOPSIS
.B libinput analyze touch-down-state [\-\-help] [options] \fIrecording.yml\fI
.SH DESCRIPTION
.PP
The
.B "libinput analyze touch\-down\state"
tool analyzes a recording made with
.B "libinput record"
and prints "down" state of each touch. This tool aids with the detection of stuck touches.
.PP
This is a debugging tool only, its output may change at any time. Do not
rely on the output.
.SH OPTIONS
.TP 8
.B \-\-help
Print help
.TP 8
.B \-\-use-st
Use the single-touch BTN_TOOL_ bits instead of the slot state. The output
will only show the "highest" finger down at any time. For examples, where
two fingers are down, only the second slot will be marked as down.
.SH OUTPUT
An example output for a two-finger alternating sequence below.
.PP
.nf
.sf
6.140281 +1062ms: x | x
7.410377 +1257ms: | x
7.420200 +9ms: |
11.233108 +3812ms: x | x
11.245721 +12ms: x | x
11.850206 +604ms: |
13.827740 +1977ms: x |
13.839723 +11ms: x |
14.704027 +864ms: x | x
14.716691 +12ms: x | x
.fi
.in
.SH LIBINPUT
Part of the
.B libinput(1)
suite

View file

@ -0,0 +1,202 @@
#!/usr/bin/env python3
# -*- coding: utf-8
# vim: set expandtab shiftwidth=4:
# -*- Mode: python; coding: utf-8; indent-tabs-mode: nil -*- */
#
# Copyright © 2020 Red Hat, Inc.
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the 'Software'),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice (including the next
# paragraph) shall be included in all copies or substantial portions of the
# Software.
#
# THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
# DEALINGS IN THE SOFTWARE.
#
#
# Prints the down/up state of each touch slot
#
# Input is a libinput record yaml file
import argparse
import enum
import sys
import yaml
import libevdev
class Slot:
class State(enum.Enum):
NONE = "NONE"
BEGIN = "BEGIN"
UPDATE = "UPDATE"
END = "END"
def __init__(self, index):
self._state = Slot.State.NONE
self.index = index
self.used = False
def begin(self):
assert self.state == Slot.State.NONE
self.state = Slot.State.BEGIN
def end(self):
assert self.state in (Slot.State.BEGIN, Slot.State.UPDATE)
self.state = Slot.State.END
def sync(self):
if self.state == Slot.State.BEGIN:
self.state = Slot.State.UPDATE
elif self.state == Slot.State.END:
self.state = Slot.State.NONE
@property
def state(self):
return self._state
@state.setter
def state(self, newstate):
assert newstate in Slot.State
if newstate != Slot.State.NONE:
self.used = True
self._state = newstate
@property
def is_active(self):
return self.state in (Slot.State.BEGIN, Slot.State.UPDATE)
def __str__(self):
return "+" if self.state in (Slot.State.BEGIN, Slot.State.UPDATE) else " "
def main(argv):
parser = argparse.ArgumentParser(description="Print the state of touches over time")
parser.add_argument(
"--use-st", action="store_true", help="Ignore slots, use the BTN_TOOL bits"
)
parser.add_argument(
"path", metavar="recording", nargs=1, help="Path to libinput-record YAML file"
)
args = parser.parse_args()
yml = yaml.safe_load(open(args.path[0]))
device = yml["devices"][0]
absinfo = device["evdev"]["absinfo"]
try:
nslots = absinfo[libevdev.EV_ABS.ABS_MT_SLOT.value][1] + 1
except KeyError:
args.use_st = True
tool_slot_map = {
libevdev.EV_KEY.BTN_TOOL_FINGER: 0,
libevdev.EV_KEY.BTN_TOOL_PEN: 0,
libevdev.EV_KEY.BTN_TOOL_DOUBLETAP: 1,
libevdev.EV_KEY.BTN_TOOL_TRIPLETAP: 2,
libevdev.EV_KEY.BTN_TOOL_QUADTAP: 3,
libevdev.EV_KEY.BTN_TOOL_QUINTTAP: 4,
}
if args.use_st:
for bit in tool_slot_map:
if bit.value in device["evdev"]["codes"][libevdev.EV_KEY.value]:
nslots = max(nslots, tool_slot_map[bit])
slots = [Slot(i) for i in range(0, nslots)]
# We claim the first slots are used just to make the formatting
# more consistent
for i in range(min(5, len(slots))):
slots[i].used = True
slot = 0
last_time = None
last_slot_state = None
header = "Timestamp | Rel time | Slots |"
print(header)
print("-" * len(header))
def events():
for event in device["events"]:
for evdev in event["evdev"]:
yield evdev
for evdev in events():
e = libevdev.InputEvent(
code=libevdev.evbit(evdev[2], evdev[3]),
value=evdev[4],
sec=evdev[0],
usec=evdev[1],
)
# single-touch formatting is simpler than multitouch, it'll just
# show the highest finger down rather than the correct output.
if args.use_st:
if e.code in tool_slot_map:
slot = tool_slot_map[e.code]
s = slots[slot]
if e.value:
s.begin()
else:
s.end()
else:
if e.code == libevdev.EV_ABS.ABS_MT_SLOT:
slot = e.value
s = slots[slot]
# bcm5974 cycles through slot numbers, so let's say all below
# our current slot number was used
for sl in slots[: slot + 1]:
sl.used = True
else:
s = slots[slot]
if e.code == libevdev.EV_ABS.ABS_MT_TRACKING_ID:
if e.value == -1:
s.end()
else:
s.begin()
elif e.code in (
libevdev.EV_ABS.ABS_MT_POSITION_X,
libevdev.EV_ABS.ABS_MT_POSITION_Y,
libevdev.EV_ABS.ABS_MT_PRESSURE,
libevdev.EV_ABS.ABS_MT_TOUCH_MAJOR,
libevdev.EV_ABS.ABS_MT_TOUCH_MINOR,
):
# If recording started after touch down
if s.state == Slot.State.NONE:
s.begin()
if e.code == libevdev.EV_SYN.SYN_REPORT:
current_slot_state = tuple(s.is_active for s in slots)
if current_slot_state != last_slot_state:
if last_time is None:
last_time = e.sec * 1000000 + e.usec
tdelta = 0
else:
t = e.sec * 1000000 + e.usec
tdelta = int((t - last_time) / 1000) / 1000
last_time = t
fmt = " | ".join([str(s) for s in slots if s.used])
print(
"{:2d}.{:06d} | {:+7.3f}s | {}".format(e.sec, e.usec, tdelta, fmt)
)
last_slot_state = current_slot_state
for s in slots:
s.sync()
if __name__ == "__main__":
main(sys.argv)

View file

@ -24,6 +24,9 @@ Features that can be analyzed include
.TP 8
.B libinput\-analyze\-per-slot-delta(1)
analyze the delta per event per slot
.TP 8
.B libinput\-analyze\-touch-down-state(1)
analyze the state of each touch in a recording
.SH LIBINPUT
Part of the
.B libinput(1)