| 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) 2008,2009 by Openmoko, Inc. |
| 10 | * Author: Nelson Castillo <arhuaco@freaks-unidos.net> |
| 11 | * |
| 12 | */ |
| 13 | |
| 14 | struct ts_filter_group_configuration { |
| 15 | /* Size of the filter. */ |
| 16 | int length; |
| 17 | /* |
| 18 | * If two points are separated by this distance or less they |
| 19 | * are considered to be members of the same group. |
| 20 | */ |
| 21 | int close_enough; |
| 22 | /* Minimum allowed size for the biggest group in the sample set. */ |
| 23 | int threshold; |
| 24 | /* |
| 25 | * Number of times we try to get a group of points with at least |
| 26 | * threshold points. |
| 27 | */ |
| 28 | int attempts; |
| 29 | |
| 30 | /* Generic filter configuration. */ |
| 31 | struct ts_filter_configuration config; |
| 32 | }; |
| 33 | |
| 34 | extern const struct ts_filter_api ts_filter_group_api; |
| 35 | |
| 36 | #endif |
| 37 | |
