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Guard MediaDeviceManager.Entry against successive stop calls

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It's non obvious from the code that an entry will be stopped
only once. The start() protection is added for simmetry.

Bug: 232812007
Test: Manual behavioral test.
Test: atest MediaDeviceManagerTest MediaDataCombineLatestTest
Change-Id: Icb4573d30790b4055b67eff57c495ceb6c3ae61b
This commit is contained in:
Santiago Seifert
2022-07-12 15:00:26 +00:00
parent 2dfcb94d09
commit 543dd362fe
1 changed files with 22 additions and 18 deletions
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40
packages/SystemUI/src/com/android/systemui/media/MediaDeviceManager.kt
View File

@@ -188,24 +188,28 @@ class MediaDeviceManager @Inject constructor(
@AnyThread @AnyThread
fun start() = bgExecutor.execute { fun start() = bgExecutor.execute {
localMediaManager.registerCallback(this) if (!started) {
localMediaManager.startScan() localMediaManager.registerCallback(this)
muteAwaitConnectionManager?.startListening() localMediaManager.startScan()
playbackType = controller?.playbackInfo?.playbackType ?: PLAYBACK_TYPE_UNKNOWN muteAwaitConnectionManager?.startListening()
controller?.registerCallback(this) playbackType = controller?.playbackInfo?.playbackType ?: PLAYBACK_TYPE_UNKNOWN
updateCurrent() controller?.registerCallback(this)
started = true updateCurrent()
configurationController.addCallback(configListener) started = true
configurationController.addCallback(configListener)
}
} }
@AnyThread @AnyThread
fun stop() = bgExecutor.execute { fun stop() = bgExecutor.execute {
started = false if (started) {
controller?.unregisterCallback(this) started = false
localMediaManager.stopScan() controller?.unregisterCallback(this)
localMediaManager.unregisterCallback(this) localMediaManager.stopScan()
muteAwaitConnectionManager?.stopListening() localMediaManager.unregisterCallback(this)
configurationController.removeCallback(configListener) muteAwaitConnectionManager?.stopListening()
configurationController.removeCallback(configListener)
}
} }
fun dump(pw: PrintWriter) { fun dump(pw: PrintWriter) {
@@ -265,7 +269,6 @@ class MediaDeviceManager @Inject constructor(
updateCurrent() updateCurrent()
} }
override fun onBroadcastStarted(reason: Int, broadcastId: Int) { override fun onBroadcastStarted(reason: Int, broadcastId: Int) {
if (DEBUG) { if (DEBUG) {
Log.d(TAG, "onBroadcastStarted(), reason = $reason , broadcastId = $broadcastId") Log.d(TAG, "onBroadcastStarted(), reason = $reason , broadcastId = $broadcastId")
@@ -279,8 +282,10 @@ class MediaDeviceManager @Inject constructor(
} }
} }
override fun onBroadcastMetadataChanged(broadcastId: Int, override fun onBroadcastMetadataChanged(
metadata: BluetoothLeBroadcastMetadata) { broadcastId: Int,
metadata: BluetoothLeBroadcastMetadata
) {
if (DEBUG) { if (DEBUG) {
Log.d(TAG, "onBroadcastMetadataChanged(), broadcastId = $broadcastId , " + Log.d(TAG, "onBroadcastMetadataChanged(), broadcastId = $broadcastId , " +
"metadata = $metadata") "metadata = $metadata")
@@ -291,7 +296,6 @@ class MediaDeviceManager @Inject constructor(
override fun onBroadcastStopped(reason: Int, broadcastId: Int) { override fun onBroadcastStopped(reason: Int, broadcastId: Int) {
if (DEBUG) { if (DEBUG) {
Log.d(TAG, "onBroadcastStopped(), reason = $reason , broadcastId = $broadcastId") Log.d(TAG, "onBroadcastStopped(), reason = $reason , broadcastId = $broadcastId")
} }
updateCurrent() updateCurrent()
} }