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1/***************************************************************************
2 *
3 * Multitouch X driver
4 * Copyright (C) 2008 Henrik Rydberg <rydberg@euromail.se>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 *
20 **************************************************************************/
21
22#ifndef HWDATA_H
23#define HWDATA_H
24
25#include "common.h"
26#include "button.h"
27
28#define BIT_MT_TOUCH_MAJOR 0
29#define BIT_MT_TOUCH_MINOR 1
30#define BIT_MT_WIDTH_MAJOR 2
31#define BIT_MT_WIDTH_MINOR 3
32#define BIT_MT_ORIENTATION 4
33#define BIT_MT_PRESSURE 5
34#define BIT_MT_POSITION_X 6
35#define BIT_MT_POSITION_Y 7
36#define BIT_MT_CNT 8
37
38struct FingerData {
39 int touch_major, touch_minor;
40 int width_major, width_minor;
41 int orientation, pressure;
42 int position_x, position_y;
43};
44
45/**
46 * struct HWData - hardware reads
47 *
48 * @finger: finger data
49 * @mask: bits corresponding to data actually read (readonly)
50 * @mread: bits corresponding to data in progress (writeonly)
51 * @button: bitmask of buttons
52 * @nfinger: number of fingers actually read (readonly)
53 * @nread: number of fingers in progress (writeonly)
54 *
55 */
56struct HWData {
57 struct FingerData finger[DIM_FINGER];
58 unsigned mask[DIM_FINGER], mread[DIM_FINGER];
59 unsigned button;
60 int nfinger, mtread, nread;
61 mstime_t evtime;
62};
63
64void init_hwdata(struct HWData *hw);
65int read_hwdata(struct HWData *hw, const struct input_event* ev);
66void output_hwdata(const struct HWData *hw);
67
68static inline int finger_dist2(const struct FingerData *a,
69 const struct FingerData *b)
70{
71 return dist2(a->position_x - b->position_x,
72 a->position_y - b->position_y);
73}
74
75#endif