| 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 |
| 33 | |
