DeviceManager.kt
2.8 KB
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
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
package io.livekit.android.room
import android.content.Context
import android.hardware.camera2.CameraManager
import android.os.Handler
import android.os.Looper
import org.webrtc.Camera1Enumerator
import org.webrtc.Camera2Enumerator
object DeviceManager {
enum class Kind {
// Only camera input currently, audio input/output only has one option atm.
CAMERA;
}
private val defaultDevices = mutableMapOf<Kind, String>()
private val listeners =
mutableMapOf<Kind, MutableList<OnDeviceAvailabilityChangeListener>>()
private var hasSetupListeners = false
@Synchronized
internal fun setupListenersIfNeeded(context: Context) {
if (hasSetupListeners) {
return
}
hasSetupListeners = true
val cameraManager = context.getSystemService(Context.CAMERA_SERVICE) as CameraManager
cameraManager.registerAvailabilityCallback(object : CameraManager.AvailabilityCallback() {
override fun onCameraAvailable(cameraId: String) {
notifyListeners(Kind.CAMERA)
}
override fun onCameraUnavailable(cameraId: String) {
notifyListeners(Kind.CAMERA)
}
override fun onCameraAccessPrioritiesChanged() {
notifyListeners(Kind.CAMERA)
}
}, Handler(Looper.getMainLooper()))
}
fun getDefaultDevice(kind: Kind): String? {
return defaultDevices[kind]
}
fun setDefaultDevice(kind: Kind, deviceId: String?) {
if (deviceId != null) {
defaultDevices[kind] = deviceId
} else {
defaultDevices.remove(kind)
}
}
/**
* @return the list of device ids for [kind]
*/
fun getDevices(context: Context, kind: Kind): List<String> {
return when (kind) {
Kind.CAMERA -> {
val cameraEnumerator = if (Camera2Enumerator.isSupported(context)) {
Camera2Enumerator(context)
} else {
Camera1Enumerator()
}
cameraEnumerator.deviceNames.toList()
}
}
}
fun registerOnDeviceAvailabilityChange(
kind: Kind,
listener: OnDeviceAvailabilityChangeListener
) {
if (listeners[kind] == null) {
listeners[kind] = mutableListOf()
}
listeners[kind]!!.add(listener)
}
fun unregisterOnDeviceAvailabilityChange(
kind: Kind,
listener: OnDeviceAvailabilityChangeListener
) {
listeners[kind]?.remove(listener)
}
private fun notifyListeners(kind: Kind) {
listeners[kind]?.forEach {
it.onDeviceAvailabilityChanged(kind)
}
}
interface OnDeviceAvailabilityChangeListener {
fun onDeviceAvailabilityChanged(kind: Kind)
}
}