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input_mt_assign_slots(9) - phpMan

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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
Kernel Hackers Manual 4.8.                 January 2017                   INPUT_MT_ASSIGN_SLOT(9)


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