1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
/* Copyright 2020 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/* Implement an orientation sensor. */
#include "motion_orientation.h"
/*
* Orientation mode vectors, must match sequential ordering of
* known orientations from enum motionsensor_orientation
*/
static const intv3_t orientation_modes[] = {
[MOTIONSENSE_ORIENTATION_LANDSCAPE] = { 0, -1, 0 },
[MOTIONSENSE_ORIENTATION_PORTRAIT] = { 1, 0, 0 },
[MOTIONSENSE_ORIENTATION_UPSIDE_DOWN_PORTRAIT] = { -1, 0, 0 },
[MOTIONSENSE_ORIENTATION_UPSIDE_DOWN_LANDSCAPE] = { 0, 1, 0 },
};
enum motionsensor_orientation motion_orientation_remap(
const struct motion_sensor_t *s,
enum motionsensor_orientation orientation)
{
enum motionsensor_orientation rotated_orientation;
const intv3_t *orientation_v;
intv3_t rotated_orientation_v;
if (orientation == MOTIONSENSE_ORIENTATION_UNKNOWN)
return MOTIONSENSE_ORIENTATION_UNKNOWN;
orientation_v = &orientation_modes[orientation];
rotate(*orientation_v, *s->rot_standard_ref, rotated_orientation_v);
rotated_orientation = ((2 * rotated_orientation_v[1] +
rotated_orientation_v[0] + 4) % 5);
return rotated_orientation;
}
|
