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Peter Hutterer f3d94ecfd7 Drop the callback interface, replace with libevdev_next_event 
Callbacks looked good on paper, but synaptics ran into an issue already that
it just couldn't easily pass around the state needed in the actual event
processing function.

Replace with a new interface that only returns the next event (still reading
more off the fd while doing so).

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2013-05-30 13:37:25 +10:00
libevdev Drop the callback interface, replace with libevdev_next_event 2013-05-30 13:37:25 +10:00
test Drop the callback interface, replace with libevdev_next_event 2013-05-30 13:37:25 +10:00
.gitignore libevdev is a library to handle evdev devices 2013-05-29 15:33:21 +10:00
configure.ac libevdev is a library to handle evdev devices 2013-05-29 15:33:21 +10:00
COPYING libevdev is a library to handle evdev devices 2013-05-29 15:33:21 +10:00
libevdev.pc.in libevdev is a library to handle evdev devices 2013-05-29 15:33:21 +10:00
Makefile.am libevdev is a library to handle evdev devices 2013-05-29 15:33:21 +10:00
README.md libevdev is a library to handle evdev devices 2013-05-29 15:33:21 +10:00

README.md

libevemu - wrapper library for evdev input devices

libevdevdev is a wrapper library for evdev devices. it moves the common tasks when dealing with evdev devices into a library and provides a library interface to the callers, thus avoiding erroneous ioctls, etc.

http://github.com/whot/libevdev

libevdev is currently in early stages of development. Use at your own risk

Device capabilities

libevdev provides interfaces to query a device's capabilities. These interfaces are type-safe (as opposed to the ioctl bits) and protect against invalid codes, etc.

SYN_DROPPED handling

SYN_DROPPED is sent by the kernel if userspace cannot keep up with the reporting rate of the device. Once the kernel's buffer is full, it will issue a SYN_DROPPED event signalling dropped event. The userspace process must re-sync the device.

libevdevdev semi-transparently handles SYN_DROPPED events, providing an interface to the caller to sync up device state without having to manually compare bitfields. Instead, libevdev sends the 'missing' events to the caller, allowing it to use the same event processing paths as it would otherwise.

Changing devices

libevdev provides interfaces to modify the kernel device.