1 /*
2  * Copyright (C) 2024 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package com.android.settingslib.bluetooth
18 
19 import android.bluetooth.BluetoothLeBroadcast
20 import android.bluetooth.BluetoothLeBroadcastMetadata
21 import com.android.internal.util.ConcurrentUtils
22 import kotlinx.coroutines.channels.Channel
23 import kotlinx.coroutines.channels.awaitClose
24 import kotlinx.coroutines.flow.Flow
25 import kotlinx.coroutines.flow.buffer
26 import kotlinx.coroutines.flow.callbackFlow
27 import kotlinx.coroutines.launch
28 
29 /** [Flow] for [BluetoothLeBroadcast.Callback] source start/stop events */
30 val LocalBluetoothLeBroadcast.onBroadcastStartedOrStopped: Flow<Unit>
31     get() =
<lambda>null32         callbackFlow {
33                 val listener =
34                     object : BluetoothLeBroadcast.Callback {
35                         override fun onBroadcastStarted(reason: Int, broadcastId: Int) {
36                             launch { trySend(Unit) }
37                         }
38 
39                         override fun onBroadcastStartFailed(reason: Int) {
40                             launch { trySend(Unit) }
41                         }
42 
43                         override fun onBroadcastStopped(reason: Int, broadcastId: Int) {
44                             launch { trySend(Unit) }
45                         }
46 
47                         override fun onBroadcastStopFailed(reason: Int) {
48                             launch { trySend(Unit) }
49                         }
50 
51                         override fun onPlaybackStarted(reason: Int, broadcastId: Int) {}
52 
53                         override fun onPlaybackStopped(reason: Int, broadcastId: Int) {}
54 
55                         override fun onBroadcastUpdated(reason: Int, broadcastId: Int) {}
56 
57                         override fun onBroadcastUpdateFailed(reason: Int, broadcastId: Int) {}
58 
59                         override fun onBroadcastMetadataChanged(
60                             broadcastId: Int,
61                             metadata: BluetoothLeBroadcastMetadata
62                         ) {}
63                     }
64                 registerServiceCallBack(
65                     ConcurrentUtils.DIRECT_EXECUTOR,
66                     listener,
67                 )
68                 awaitClose { unregisterServiceCallBack(listener) }
69             }
70             .buffer(capacity = Channel.CONFLATED)
71 
72 /** [Flow] for [BluetoothLeBroadcast.Callback] onBroadcastMetadataChanged event */
73 val LocalBluetoothLeBroadcast.onBroadcastMetadataChanged: Flow<Unit>
74     get() =
<lambda>null75         callbackFlow {
76             val listener =
77                 object : BluetoothLeBroadcast.Callback {
78                     override fun onBroadcastStarted(reason: Int, broadcastId: Int) {}
79 
80                     override fun onBroadcastStartFailed(reason: Int) {
81                     }
82 
83                     override fun onBroadcastStopped(reason: Int, broadcastId: Int) {
84                     }
85 
86                     override fun onBroadcastStopFailed(reason: Int) {
87                     }
88 
89                     override fun onPlaybackStarted(reason: Int, broadcastId: Int) {
90                     }
91 
92                     override fun onPlaybackStopped(reason: Int, broadcastId: Int) {
93                     }
94 
95                     override fun onBroadcastUpdated(reason: Int, broadcastId: Int) {}
96 
97                     override fun onBroadcastUpdateFailed(reason: Int, broadcastId: Int) {}
98 
99                     override fun onBroadcastMetadataChanged(
100                         broadcastId: Int,
101                         metadata: BluetoothLeBroadcastMetadata
102                     ) {
103                         trySend(Unit)
104                     }
105                 }
106             registerServiceCallBack(
107                 ConcurrentUtils.DIRECT_EXECUTOR,
108                 listener,
109             )
110             awaitClose { unregisterServiceCallBack(listener) }
111         }
112             .buffer(capacity = Channel.CONFLATED)
113