| 1 | /*
|
|---|
| 2 | * Copyright (c) 2012 Martin Sucha
|
|---|
| 3 | * All rights reserved.
|
|---|
| 4 | *
|
|---|
| 5 | * Redistribution and use in source and binary forms, with or without
|
|---|
| 6 | * modification, are permitted provided that the following conditions
|
|---|
| 7 | * are met:
|
|---|
| 8 | *
|
|---|
| 9 | * - Redistributions of source code must retain the above copyright
|
|---|
| 10 | * notice, this list of conditions and the following disclaimer.
|
|---|
| 11 | * - Redistributions in binary form must reproduce the above copyright
|
|---|
| 12 | * notice, this list of conditions and the following disclaimer in the
|
|---|
| 13 | * documentation and/or other materials provided with the distribution.
|
|---|
| 14 | * - The name of the author may not be used to endorse or promote products
|
|---|
| 15 | * derived from this software without specific prior written permission.
|
|---|
| 16 | *
|
|---|
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
|---|
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
|---|
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|---|
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
|---|
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|---|
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|---|
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|---|
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|---|
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
|---|
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|---|
| 27 | */
|
|---|
| 28 |
|
|---|
| 29 | #ifndef ISDV4_H_
|
|---|
| 30 | #define ISDV4_H_
|
|---|
| 31 |
|
|---|
| 32 | #include <async.h>
|
|---|
| 33 | #include <io/chardev.h>
|
|---|
| 34 |
|
|---|
| 35 | typedef struct isdv4_event isdv4_event_t;
|
|---|
| 36 |
|
|---|
| 37 | typedef void (*isdv4_event_fn)(const isdv4_event_t *);
|
|---|
| 38 |
|
|---|
| 39 | typedef struct {
|
|---|
| 40 | /* Stylus information */
|
|---|
| 41 | unsigned int stylus_max_x;
|
|---|
| 42 | unsigned int stylus_max_y;
|
|---|
| 43 | unsigned int stylus_max_pressure;
|
|---|
| 44 | unsigned int stylus_max_xtilt;
|
|---|
| 45 | unsigned int stylus_max_ytilt;
|
|---|
| 46 | bool stylus_tilt_supported;
|
|---|
| 47 |
|
|---|
| 48 | /* Touch information */
|
|---|
| 49 | unsigned int touch_type;
|
|---|
| 50 | unsigned int touch_max_x;
|
|---|
| 51 | unsigned int touch_max_y;
|
|---|
| 52 |
|
|---|
| 53 | /* Event state */
|
|---|
| 54 | bool stylus_in_proximity;
|
|---|
| 55 | bool stylus_is_eraser;
|
|---|
| 56 | bool tip_pressed; /* Reported as stylus button 1 */
|
|---|
| 57 | bool button1_pressed; /* Reported as stylus button 2 */
|
|---|
| 58 | bool button2_pressed; /* Reported as stylus button 3 */
|
|---|
| 59 | bool finger1_pressed; /* Reported as touch button 1 */
|
|---|
| 60 |
|
|---|
| 61 | /** Session with the serial device */
|
|---|
| 62 | async_sess_t *sess;
|
|---|
| 63 | /** Character device */
|
|---|
| 64 | chardev_t *chardev;
|
|---|
| 65 |
|
|---|
| 66 | /* Receive buffer state */
|
|---|
| 67 | uint8_t *buf;
|
|---|
| 68 | size_t buf_size;
|
|---|
| 69 | size_t buf_end;
|
|---|
| 70 |
|
|---|
| 71 | /** Callbacks */
|
|---|
| 72 | isdv4_event_fn emit_event_fn;
|
|---|
| 73 | } isdv4_state_t;
|
|---|
| 74 |
|
|---|
| 75 | typedef enum {
|
|---|
| 76 | UNKNOWN,
|
|---|
| 77 | PRESS,
|
|---|
| 78 | RELEASE,
|
|---|
| 79 | PROXIMITY_IN,
|
|---|
| 80 | PROXIMITY_OUT,
|
|---|
| 81 | MOVE
|
|---|
| 82 | } isdv4_event_type_t;
|
|---|
| 83 |
|
|---|
| 84 | typedef enum {
|
|---|
| 85 | STYLUS_TIP,
|
|---|
| 86 | STYLUS_ERASER,
|
|---|
| 87 | TOUCH
|
|---|
| 88 | } isdv4_source_type_t;
|
|---|
| 89 |
|
|---|
| 90 | struct isdv4_event {
|
|---|
| 91 | isdv4_event_type_t type;
|
|---|
| 92 | isdv4_source_type_t source;
|
|---|
| 93 | unsigned int x;
|
|---|
| 94 | unsigned int y;
|
|---|
| 95 | unsigned int pressure;
|
|---|
| 96 | unsigned int button;
|
|---|
| 97 | };
|
|---|
| 98 |
|
|---|
| 99 | extern errno_t isdv4_init(isdv4_state_t *, async_sess_t *, isdv4_event_fn);
|
|---|
| 100 | extern errno_t isdv4_init_tablet(isdv4_state_t *);
|
|---|
| 101 | extern errno_t isdv4_read_events(isdv4_state_t *state);
|
|---|
| 102 | extern void isdv4_fini(isdv4_state_t *);
|
|---|
| 103 |
|
|---|
| 104 | #endif
|
|---|
