2 * Copyright (C) 2016 SurroundIO
3 * Author: Martin Kelly <martin@surround.io>
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
15 * You should have received a copy of the GNU Library General Public
16 * License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
21 #ifndef __GST_ANDROID_HARDWARE_SENSOR_H__
22 #define __GST_ANDROID_HARDWARE_SENSOR_H__
27 #include "gstsensors.h"
31 typedef struct GstAHSensor
37 typedef struct GstAHSensorData
43 typedef struct GstAHSensorEvent
46 * Note that we don't use the Android event timestamp, as it's not reliable.
47 * See https://code.google.com/p/android/issues/detail?id=7981 for more
54 typedef struct GstAHSensorEventListener
60 } GstAHSensorEventListener;
62 typedef struct GstAHSensorManager
68 gint gst_android_sensor_type_from_string (const gchar * type_str);
70 /* android.hardware.SensorListener onSensorChanged */
71 typedef void (*GstAHSensorCallback) (jobject sensor_event, gpointer user_data);
73 /* android.hardware.SensorListener onAccuracyChanged */
74 typedef void (*GstAHSAccuracyCallback) (jobject sensor, gint32 accuracy,
77 gboolean gst_android_hardware_sensor_init (void);
78 void gst_android_hardware_sensor_deinit (void);
81 * Example usage (excluding error checking):
83 * GstAHSensorManager *manager = gst_ah_sensor_get_manager ();
84 * GstAHSensor *sensor =
85 * gst_ah_sensor_get_default_sensor (manager, * sensor_type);
86 * GstAHSensorEventListener *listener =
87 * gst_ah_sensor_create_listener * (change_cb, accuracy_cb, self);
88 * gst_ah_sensor_register_listener (manager, listener, sensor,
89 * SensorDelay_SENSOR_DELAY_NORMAL);
91 GstAHSensorManager *gst_ah_sensor_get_manager (void);
92 GstAHSensor *gst_ah_sensor_get_default_sensor (GstAHSensorManager * manager,
94 GstAHSensorEventListener *gst_ah_sensor_create_listener (GstAHSensorCallback
95 sensor_cb, GstAHSAccuracyCallback accuracy_cb, gpointer user_data);
96 gboolean gst_ah_sensor_register_listener (GstAHSensorManager * self,
97 GstAHSensorEventListener * listener, GstAHSensor * sensor, gint32 delay);
98 void gst_ah_sensor_unregister_listener (GstAHSensorManager * self,
99 GstAHSensorEventListener * listener);
101 gboolean gst_ah_sensor_populate_event (GstAHSensorEvent * event,
102 jobject event_object, gint size);
103 void gst_ah_sensor_free_sensor_data (GstAHSensorData * data);
106 * These constants come from the matching SENSOR_DELAY_* TYPE_* constants found
107 * in the Android documentation:
110 * https://developer.android.com/reference/android/hardware/SensorManager.html
113 * https://developer.android.com/reference/android/hardware/Sensor.html
115 * They are intended to be passed into the registerListener callback for
116 * listener registration. Note that, although these are hardcoded, we also do
117 * paranoid runtime checks during plugin init to verify that the API values
118 * haven't changed. This is unlikely but seems like a good precaution. When
119 * adding values, please keep the two lists in sync.
123 AHS_SENSOR_DELAY_FASTEST = 0,
124 AHS_SENSOR_DELAY_GAME = 1,
125 AHS_SENSOR_DELAY_NORMAL = 3,
126 AHS_SENSOR_DELAY_UI = 2
131 AHS_SENSOR_TYPE_ACCELEROMETER = 0x1,
132 AHS_SENSOR_TYPE_AMBIENT_TEMPERATURE = 0xd,
133 AHS_SENSOR_TYPE_GAME_ROTATION_VECTOR = 0xf,
134 AHS_SENSOR_TYPE_GEOMAGNETIC_ROTATION_VECTOR = 0x14,
135 AHS_SENSOR_TYPE_GRAVITY = 0x9,
136 AHS_SENSOR_TYPE_GYROSCOPE = 0x4,
137 AHS_SENSOR_TYPE_GYROSCOPE_UNCALIBRATED = 0x10,
138 AHS_SENSOR_TYPE_HEART_RATE = 0x15,
139 AHS_SENSOR_TYPE_LIGHT = 0x5,
140 AHS_SENSOR_TYPE_LINEAR_ACCELERATION = 0xa,
141 AHS_SENSOR_TYPE_MAGNETIC_FIELD = 0x2,
142 AHS_SENSOR_TYPE_MAGNETIC_FIELD_UNCALIBRATED = 0xe,
143 AHS_SENSOR_TYPE_ORIENTATION = 0x3,
144 AHS_SENSOR_TYPE_PRESSURE = 0x6,
145 AHS_SENSOR_TYPE_PROXIMITY = 0x8,
146 AHS_SENSOR_TYPE_RELATIVE_HUMIDITY = 0xc,
147 AHS_SENSOR_TYPE_ROTATION_VECTOR = 0xb,
148 AHS_SENSOR_TYPE_SIGNIFICANT_MOTION = 0x11,
149 AHS_SENSOR_TYPE_STEP_COUNTER = 0x13,
150 AHS_SENSOR_TYPE_STEP_DETECTOR = 0x12
153 gsize gst_ah_sensor_get_sensor_data_size (gint sensor_type);
156 #endif /* __GST_ANDROID_HARDWARE_SENSOR_H__ */