Detect audio device change from API 23 with AudioCapabilitiesReceiver

* Add AudioDeviceCallbackApi23 class which extends the AudioDeviceCallback.
* Add registerAudioDeviceCallback and unregisterAudioDeviceCallback methods for Api23.
* Modify the logics of AudioCapabilitiesReceiver constructor, register and unregister methods.

PiperOrigin-RevId: 516183997

library/core/src/main/java/com/google/android/exoplayer2/audio/AudioCapabilitiesReceiver.java

@@ -15,17 +15,22 @@
  */
 package com.google.android.exoplayer2.audio;
 
+import static com.google.android.exoplayer2.util.Assertions.checkNotNull;
+
 import android.content.BroadcastReceiver;
 import android.content.ContentResolver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
 import android.database.ContentObserver;
+import android.media.AudioDeviceCallback;
+import android.media.AudioDeviceInfo;
 import android.media.AudioManager;
 import android.net.Uri;
 import android.os.Handler;
+import androidx.annotation.DoNotInline;
 import androidx.annotation.Nullable;
-import com.google.android.exoplayer2.util.Assertions;
+import androidx.annotation.RequiresApi;
 import com.google.android.exoplayer2.util.Util;
 
 /**
@@ -48,7 +53,8 @@ public final class AudioCapabilitiesReceiver {
   private final Context context;
   private final Listener listener;
   private final Handler handler;
-  @Nullable private final BroadcastReceiver receiver;
+  @Nullable private final AudioDeviceCallbackV23 audioDeviceCallback;
+  @Nullable private final BroadcastReceiver hdmiAudioPlugBroadcastReceiver;
   @Nullable private final ExternalSurroundSoundSettingObserver externalSurroundSoundSettingObserver;
 
   @Nullable /* package */ AudioCapabilities audioCapabilities;
@@ -61,9 +67,11 @@ public final class AudioCapabilitiesReceiver {
   public AudioCapabilitiesReceiver(Context context, Listener listener) {
     context = context.getApplicationContext();
     this.context = context;
-    this.listener = Assertions.checkNotNull(listener);
+    this.listener = checkNotNull(listener);
     handler = Util.createHandlerForCurrentOrMainLooper();
-    receiver = Util.SDK_INT >= 21 ? new HdmiAudioPlugBroadcastReceiver() : null;
+    audioDeviceCallback = Util.SDK_INT >= 23 ? new AudioDeviceCallbackV23() : null;
+    hdmiAudioPlugBroadcastReceiver =
+        Util.SDK_INT >= 21 ? new HdmiAudioPlugBroadcastReceiver() : null;
     Uri externalSurroundSoundUri = AudioCapabilities.getExternalSurroundSoundGlobalSettingUri();
     externalSurroundSoundSettingObserver =
         externalSurroundSoundUri != null
@@ -82,18 +90,24 @@ public final class AudioCapabilitiesReceiver {
   @SuppressWarnings("InlinedApi")
   public AudioCapabilities register() {
     if (registered) {
-      return Assertions.checkNotNull(audioCapabilities);
+      return checkNotNull(audioCapabilities);
     }
     registered = true;
     if (externalSurroundSoundSettingObserver != null) {
       externalSurroundSoundSettingObserver.register();
     }
+    if (Util.SDK_INT >= 23 && audioDeviceCallback != null) {
+      Api23.registerAudioDeviceCallback(context, audioDeviceCallback, handler);
+    }
     @Nullable Intent stickyIntent = null;
-    if (receiver != null) {
+    if (hdmiAudioPlugBroadcastReceiver != null) {
       IntentFilter intentFilter = new IntentFilter(AudioManager.ACTION_HDMI_AUDIO_PLUG);
       stickyIntent =
           context.registerReceiver(
-              receiver, intentFilter, /* broadcastPermission= */ null, handler);
+              hdmiAudioPlugBroadcastReceiver,
+              intentFilter,
+              /* broadcastPermission= */ null,
+              handler);
     }
     audioCapabilities = AudioCapabilities.getCapabilities(context, stickyIntent);
     return audioCapabilities;
@@ -108,8 +122,11 @@ public final class AudioCapabilitiesReceiver {
       return;
     }
     audioCapabilities = null;
-    if (receiver != null) {
+    if (Util.SDK_INT >= 23 && audioDeviceCallback != null) {
-      context.unregisterReceiver(receiver);
+      Api23.unregisterAudioDeviceCallback(context, audioDeviceCallback);
+    }
+    if (hdmiAudioPlugBroadcastReceiver != null) {
+      context.unregisterReceiver(hdmiAudioPlugBroadcastReceiver);
     }
     if (externalSurroundSoundSettingObserver != null) {
       externalSurroundSoundSettingObserver.unregister();
@@ -159,4 +176,37 @@ public final class AudioCapabilitiesReceiver {
       onNewAudioCapabilities(AudioCapabilities.getCapabilities(context));
     }
   }
+
+  @RequiresApi(23)
+  private final class AudioDeviceCallbackV23 extends AudioDeviceCallback {
+    @Override
+    public void onAudioDevicesAdded(AudioDeviceInfo[] addedDevices) {
+      onNewAudioCapabilities(AudioCapabilities.getCapabilities(context));
+    }
+
+    @Override
+    public void onAudioDevicesRemoved(AudioDeviceInfo[] removedDevices) {
+      onNewAudioCapabilities(AudioCapabilities.getCapabilities(context));
+    }
+  }
+
+  @RequiresApi(23)
+  private static final class Api23 {
+
+    @DoNotInline
+    public static void registerAudioDeviceCallback(
+        Context context, AudioDeviceCallback callback, Handler handler) {
+      AudioManager audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
+      checkNotNull(audioManager).registerAudioDeviceCallback(callback, handler);
+    }
+
+    @DoNotInline
+    public static void unregisterAudioDeviceCallback(
+        Context context, AudioDeviceCallback callback) {
+      AudioManager audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
+      checkNotNull(audioManager).unregisterAudioDeviceCallback(callback);
+    }
+
+    private Api23() {}
+  }
 }