drivers/input/touchscreen/ts_filter_group.h

   1 #ifndef __TS_FILTER_GROUP_H__
   2 #define __TS_FILTER_GROUP_H__
   3
   4 #include "ts_filter.h"
   5
   6 /*
   7  * Touchscreen group filter.
   8  *
   9  * Copyright (C) 2008 by Openmoko, Inc.
  10  * Author: Nelson Castillo <arhuaco@freaks-unidos.net>
  11  *
  12  */
  13
  14 struct ts_filter_group_configuration {
  15         int extent;
  16         int close_enough;
  17         int threshold;
  18         int attempts;
  19 };
  20
  21 struct ts_filter_group {
  22         struct ts_filter tsf;
  23         struct ts_filter_group_configuration *config;
  24
  25         int N;          /* How many samples we have */
  26         int *samples[MAX_TS_FILTER_COORDS];     /* the samples, our input */
  27
  28         int *group_size;        /* used for temporal computations */
  29         int *sorted_samples;    /* used for temporal computations */
  30
  31         int range_max[MAX_TS_FILTER_COORDS];    /* max computed ranges */
  32         int range_min[MAX_TS_FILTER_COORDS];    /* min computed ranges */
  33
  34         int tries_left;         /* We finish if we don't get enough samples */
  35 };
  36
  37 extern struct ts_filter_api ts_filter_group_api;
  38
  39 #endif