1 /*****************************************************************************
3 * mtdev - Multitouch Protocol Translation Library (MIT license)
5 * Copyright (C) 2010 Henrik Rydberg <rydberg@euromail.se>
6 * Copyright (C) 2010 Canonical Ltd.
8 * Permission is hereby granted, free of charge, to any person obtaining a
9 * copy of this software and associated documentation files (the "Software"),
10 * to deal in the Software without restriction, including without limitation
11 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12 * and/or sell copies of the Software, and to permit persons to whom the
13 * Software is furnished to do so, subject to the following conditions:
15 * The above copyright notice and this permission notice (including the next
16 * paragraph) shall be included in all copies or substantial portions of the
19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
20 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
21 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
22 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
23 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
24 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
25 * DEALINGS IN THE SOFTWARE.
27 ****************************************************************************/
36 * struct mtdev_slot - represents the state of an input MT slot
37 * @abs: current values of ABS_MT axes for this slot
54 static inline int get_sval(const struct mtdev_slot *slot, int ix)
56 return (&slot->touch_major)[ix];
59 static inline void set_sval(struct mtdev_slot *slot, int ix, int value)
61 (&slot->touch_major)[ix] = value;
65 * struct mtdev_state - MT slot parsing
66 * @inbuf: input event buffer
67 * @outbuf: output event buffer
68 * @data: array of scratch slot data
69 * @used: bitmask of currently used slots
70 * @slot: slot currently being modified
71 * @lastid: last used tracking id
75 int has_ext_abs[MT_ABS_SIZE - 11];
76 struct input_absinfo ext_abs[MT_ABS_SIZE - 11];
78 struct mtdev_iobuf iobuf;
79 struct mtdev_evbuf inbuf;
80 struct mtdev_evbuf outbuf;
81 struct mtdev_slot data[DIM_FINGER];