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INPUTTEST(4) Kernel Interfaces Manual INPUTTEST(4)
NAME
inputtest - An X.Org input driver for testing
SYNOPSIS
Section "InputDevice"
Identifier "devname"
Driver "inputtest"
Option "SocketPath" "path"
...
EndSection
DESCRIPTION
inputtest is an Xorg input driver that passes events received over a socket on to the
server as input events. It supports the full set of the xf86 driver APIs exposed by Xorg.
The primary use cases of this input driver are various integration tests that need to in-
terface with the input subsystem.
CONFIGURATION DETAILS
Please refer to xorg.conf(5) for general configuration details and for options that can be
used with all input drivers. This section only covers configuration details specific to
this driver.
External process can communicate with the input driver via a named socket that is created
after the driver is initialized. The paths to the socket is passed via input driver op-
tions.
The following driver Options are supported:
Option "SocketPath" "string"
Sets the path where the driver will create a named socket. Any existing file at
that location will be removed.
Option "DeviceType" "string"
Sets the type of the device to be emulated.
Keyboard Initializes a keyboard device.
Pointer Initializes a relative-mode pointer device. It will have four valuators - a
"Rel X" valuator at axis 0 and a "Rel Y" valuator at axis 1. A horizontal scroll
valuator will be set up at axis 2. A vertical scroll valuator will be set up at
axis 3.
PointerAbsolute Initializes an absolute-mode pointer device. It will have four val-
uators - an "Abs X" valuator at axis 0 and an "Abs Y" valuator at axis 1. A hori-
zontal scroll valuator will be set up at axis 2. A vertical scroll valuator will
be set up at axis 3.
PointerAbsoluteProximity Initializes an absolute-mode pointer device with proximity
support. The valuators are initialized in the same way as for PointerAbsolute
type.
Touch Initializes a touch device. It will have 5 valuators: an "Abs MT Position X"
at axis 0, an "Abs MT Position Y" valuator at axis 1, a horizontal scroll valuator
on axis 2, a vertical scroll valuator on axis 3 and an "Abs MT Pressure" valuator
at axis 4.
Option "TouchCount" "int"
Sets the maximum number of simultaneous touches for touch devices.
Option "PointerButtonCount" "int"
Sets the maximum number of buttons in pointer devices.
Option "PointerHasPressure" "bool"
Selects whether "Abs Pressure" is available at the axis 4 in pointer devices.
INTERFACE WITH THE DRIVER
The communication with the driver is a binary protocol defined in include/xf86-input-in-
puttest-protocol.h
At the beginning, the client process that communicates with the driver must connect to the
socket that is created by the driver at SocketPath. Once the connection is established,
it must write a xf86ITEventClientVersion event and read a xf86ITResponseServerVersion re-
sponse where the driver specifies the protocol version supported by it. If this version is
lower than requested by the client, then the driver will disconnect.
After receiving xf86ITResponseServerVersion message the client may send events to the
driver. Each event is an instance of one of the xf86ITEvent* structs. The length field de-
fines the full length of the struct in bytes and the event field defines the type of the
struct.
The responses from the server follow the same structure. Each response is an instance of
one of the xf86ITResponse* structs. The length field defines the full length of the struct
in bytes and the event field defines the type of the struct.
The synchronization with Xorg is performed via xf86ITEventWaitForSync event. After sending
such event, the client must read of a xf86ITResponseSyncFinishedeventfromthesocketwithout-
sendingadditional events. The completion of the read operation indicates that Xorg has
fully processed all input events sent to it so far.
AUTHORS
Povilas Kanapickas <povilas AT radix.lt>
SEE ALSO
Xorg(1), xorg.conf(5), Xserver(1), X(7)
X Version 11 xorg-server 21.1.4 INPUTTEST(4)
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