1 /*****************************************************************************
2 *
3 * mtdev - Multitouch Protocol Translation Library (MIT license)
4 *
5 * Copyright (C) 2010 Henrik Rydberg <rydberg@euromail.se>
6 * Copyright (C) 2010 Canonical Ltd.
7 *
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:
14 *
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
17 * Software.
18 *
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.
26 *
27 ****************************************************************************/
28
29 #ifndef MTDEV_STATE_H
30 #define MTDEV_STATE_H
31
32 #include "iobuf.h"
33 #include "evbuf.h"
34
35 /*
36 * struct mtdev_slot - represents the state of an input MT slot
37 * @abs: current values of ABS_MT axes for this slot
38 */
39 struct mtdev_slot {
40 int touch_major;
41 int touch_minor;
42 int width_major;
43 int width_minor;
44 int orientation;
45 int position_x;
46 int position_y;
47 int tool_type;
48 int blob_id;
49 int tracking_id;
50 int pressure;
51 int distance;
52 int tool_x;
53 int tool_y;
54 };
55
get_sval(const struct mtdev_slot * slot,int ix)56 static inline int get_sval(const struct mtdev_slot *slot, int ix)
57 {
58 return (&slot->touch_major)[ix];
59 }
60
set_sval(struct mtdev_slot * slot,int ix,int value)61 static inline void set_sval(struct mtdev_slot *slot, int ix, int value)
62 {
63 (&slot->touch_major)[ix] = value;
64 }
65
66 /*
67 * struct mtdev_state - MT slot parsing
68 * @inbuf: input event buffer
69 * @outbuf: output event buffer
70 * @data: array of scratch slot data
71 * @used: bitmask of currently used slots
72 * @slot: slot currently being modified
73 * @lastid: last used tracking id
74 */
75 struct mtdev_state {
76
77 int has_ext_abs[MT_ABS_SIZE - LEGACY_API_NUM_MT_AXES];
78 struct input_absinfo ext_abs[MT_ABS_SIZE - LEGACY_API_NUM_MT_AXES];
79
80 struct mtdev_iobuf iobuf;
81 struct mtdev_evbuf inbuf;
82 struct mtdev_evbuf outbuf;
83 struct mtdev_slot data[DIM_FINGER];
84
85 bitmask_t used;
86 bitmask_t slot;
87 bitmask_t lastid;
88 };
89
90 #endif
91