input_mt_assign_slots — perform a best-match assignment
int input_mt_assign_slots ( | struct input_dev * dev, |
| int * slots, | |
| const struct input_mt_pos * pos, | |
| int num_pos, | |
int dmax); |
devinput device with allocated MT slots
slotsthe slot assignment to be filled
posthe position array to match
num_posnumber of positions
dmaxmaximum ABS_MT_POSITION displacement (zero for infinite)
Performs a best match against the current contacts and returns the slot assignment list. New contacts are assigned to unused slots.
The assignments are balanced so that all coordinate displacements are below the euclidian distance dmax. If no such assignment can be found, some contacts are assigned to unused slots.
Returns zero on success, or negative error in case of failure.