If the first event after a completed device sync is a SYN_DROPPED, warn the
user that they're not fast enough handling this device.
The test for this is rather complicated since we can't write SYN_DROPPED
through uinput so we have to juggle the device fd and a pipe and switch
between the two at the right time (taking into account that libevdev will read
events from the fd whenever it can).
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
All clients that want to handle SYN_DROPPED correctly need to pass an EV_SYN
through their own handlers before starting with the syn events. Rather than
letting them synthesize that, guarantee that the event is defined the first
time LIBEVDEV_READ_STATUS_SYNC is returned.
This does not change existing behavior, it merely documents it so we can rely
on it.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
We shouldn't have a separate API for that, the whole point of libevdev is to
abstract the quirkyness of the ioctls into a common interface. So let's
export the two EV_REP values through libevdev_get_event_value.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Rename from LIBEVDEV_READ_foo to LIBEVDEV_READ_FLAG_foo to differentiate
better from LIBEVDEV_READ_STATUS_foo.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Acked-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Improved readability in callers, changing magic numbers 0 and 1 to
rc = libevdev_next_event();
if (rc == LIBEVDEV_READ_STATUS_SUCCESS)
do_something();
else if (rc == LIBEVDEV_READ_STATUS_SYNC)
do_something_else()
No ABI changes, the enum values are the previously documented values,
this is just a readability improvement.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Acked-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
This way any ABS_MT_ event value that comes in will also be stored in abs_info.
That always corresponds to "current slot", so if a user calls
libevdev_set_event_value() or libevdev_get_event_value() they're actually
modifying the current slot value.
When the current slot changes, sync the state back into the absinfo values.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This enables libevdev_get_event_value(dev, EV_LED, LED_NUML); to check
if a LED is on or off.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Returns non-zero if there are events avialable to be read.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
