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INPUT_MT_ASSIGN_SLOT(9) Input Subsystem INPUT_MT_ASSIGN_SLOT(9)

NAME

input_mt_assign_slots - perform a best-match assignment

SYNOPSIS

int input_mt_assign_slots(struct input_dev * dev, int * slots, const struct input_mt_pos * pos, int num_pos, int dmax);

ARGUMENTS

dev
input device with allocated MT slots
slots
the slot assignment to be filled
pos
the position array to match
num_pos
number of positions
dmax
maximum ABS_MT_POSITION displacement (zero for infinite)

DESCRIPTION

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.

COPYRIGHT

January 2017 Kernel Hackers Manual 4.8.