target/linux/s3c24xx/files-2.6.30/include/linux/touchscreen/ts_filter_median.h

   1 #ifndef __TS_FILTER_MEDIAN_H__
   2 #define __TS_FILTER_MEDIAN_H__
   3
   4 #include "ts_filter.h"
   5
   6 /*
   7  * Touchscreen filter.
   8  *
   9  * median
  10  *
  11  * (c) 2008 Andy Green <andy@openmoko.com>
  12  */
  13
  14 struct ts_filter_median_configuration {
  15         /* Size of the filter. */
  16         int extent;
  17         /* Precomputed midpoint. */
  18         int midpoint;
  19         /* A reference value for us to check if we are going fast or slow. */
  20         int decimation_threshold;
  21         /* How many points to replace if we're going fast. */
  22         int decimation_above;
  23         /* How many points to replace if we're going slow. */
  24         int decimation_below;
  25
  26         /* Generic configuration. */
  27         struct ts_filter_configuration config;
  28 };
  29
  30 extern const struct ts_filter_api ts_filter_median_api;
  31
  32 #endif