diff options
Diffstat (limited to 'drivers/input/touchscreen/ts_filter_group.h')
| -rw-r--r-- | drivers/input/touchscreen/ts_filter_group.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/drivers/input/touchscreen/ts_filter_group.h b/drivers/input/touchscreen/ts_filter_group.h new file mode 100644 index 00000000000..c411080eae2 --- /dev/null +++ b/drivers/input/touchscreen/ts_filter_group.h @@ -0,0 +1,39 @@ +#ifndef __TS_FILTER_GROUP_H__ +#define __TS_FILTER_GROUP_H__ + +#include "ts_filter.h" + +/* + * Touchscreen group filter. + * + * Copyright (C) 2008 by Openmoko, Inc. + * Author: Nelson Castillo <arhuaco@freaks-unidos.net> + * + */ + +struct ts_filter_group_configuration { + int extent; + int close_enough; + int threshold; + int attempts; +}; + +struct ts_filter_group { + struct ts_filter tsf; + struct ts_filter_group_configuration *config; + + int N; /* How many samples we have */ + int *samples[MAX_TS_FILTER_COORDS]; /* the samples, our input */ + + int *group_size; /* used for temporal computations */ + int *sorted_samples; /* used for temporal computations */ + + int range_max[MAX_TS_FILTER_COORDS]; /* max computed ranges */ + int range_min[MAX_TS_FILTER_COORDS]; /* min computed ranges */ + + int tries_left; /* We finish if we don't get enough samples */ +}; + +extern struct ts_filter_api ts_filter_group_api; + +#endif |