diff options
Diffstat (limited to 'drivers/input/touchscreen/ts_filter_median.h')
| -rw-r--r-- | drivers/input/touchscreen/ts_filter_median.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/input/touchscreen/ts_filter_median.h b/drivers/input/touchscreen/ts_filter_median.h new file mode 100644 index 00000000000..b13f361bb6a --- /dev/null +++ b/drivers/input/touchscreen/ts_filter_median.h @@ -0,0 +1,32 @@ +#ifndef __TS_FILTER_MEDIAN_H__ +#define __TS_FILTER_MEDIAN_H__ + +#include "ts_filter.h" + +/* + * Touchscreen filter. + * + * median + * + * (c) 2008 Andy Green <andy@warmcat.com> + */ + +struct ts_filter_median_configuration { + /* Size of the filter. */ + int extent; + /* Precomputed midpoint. */ + int midpoint; + /* A reference value for us to check if we are going fast or slow. */ + int decimation_threshold; + /* How many points to replace if we're going fast. */ + int decimation_above; + /* How many points to replace if we're going slow. */ + int decimation_below; + + /* Generic configuration. */ + struct ts_filter_configuration config; +}; + +extern const struct ts_filter_api ts_filter_median_api; + +#endif |