Handle stream volume register/unregister errors

Issue: #8106
Issue: #8087
PiperOrigin-RevId: 338664455

RELEASENOTES.md

 # Release notes
 
+### 2.12.2 (2020-11-??) ###
+
+*   Core library:
+    *   Suppress exceptions from registering/unregistering the stream volume
+        receiver ([#8087](https://github.com/google/ExoPlayer/issues/8087)),
+        ([#8106](https://github.com/google/ExoPlayer/issues/8106)).
+
 ### 2.12.1 (2020-10-23) ###
 
 *   Core library:
@@ -7,6 +14,7 @@
         argument ([#8024](https://github.com/google/ExoPlayer/issues/8024)).
     *   Fix bug where streams with highly uneven track durations may get stuck
         in a buffering state
+        ([#7943](https://github.com/google/ExoPlayer/issues/7943)).
     *   Switch Guava dependency from `implementation` to `api`
         ([#7905](https://github.com/google/ExoPlayer/issues/7905),
         [#7993](https://github.com/google/ExoPlayer/issues/7993)).
@@ -63,9 +71,9 @@
     *   Allow apps to specify a `VideoAdPlayerCallback`
         ([#7944](https://github.com/google/ExoPlayer/issues/7944)).
     *   Accept ad tags via the `AdsMediaSource` constructor and deprecate
-        passing them via the `ImaAdsLoader` constructor/builders. Passing the
-        ad tag via media item playback properties continues to be supported.
-        This is in preparation for supporting ads in playlists
+        passing them via the `ImaAdsLoader` constructor/builders. Passing the ad
+        tag via media item playback properties continues to be supported. This
+        is in preparation for supporting ads in playlists
         ([#3750](https://github.com/google/ExoPlayer/issues/3750)).
     *   Add a way to override ad media MIME types
         ([#7961)(https://github.com/google/ExoPlayer/issues/7961)).
@@ -74,6 +82,8 @@
     *   Upgrade IMA SDK dependency to 3.20.1. This brings in a fix for
         companion ads rendering when targeting API 29
         ([#6432](https://github.com/google/ExoPlayer/issues/6432)).
+*   Metadata retriever:
+    *   Parse Google Photos HEIC motion photos metadata.
 
 ### 2.12.0 (2020-09-11) ###
 

library/core/src/main/java/com/google/android/exoplayer2/StreamVolumeManager.java

@@ -21,7 +21,9 @@ import android.content.Intent;
 import android.content.IntentFilter;
 import android.media.AudioManager;
 import android.os.Handler;
+import androidx.annotation.Nullable;
 import com.google.android.exoplayer2.util.Assertions;
+import com.google.android.exoplayer2.util.Log;
 import com.google.android.exoplayer2.util.Util;
 
 /** A manager that wraps {@link AudioManager} to control/listen audio stream volume. */
@@ -37,6 +39,8 @@ import com.google.android.exoplayer2.util.Util;
     void onStreamVolumeChanged(int streamVolume, boolean streamMuted);
   }
 
+  private static final String TAG = "StreamVolumeManager";
+
   // TODO(b/151280453): Replace the hidden intent action with an official one.
   // Copied from AudioManager#VOLUME_CHANGED_ACTION
   private static final String VOLUME_CHANGED_ACTION = "android.media.VOLUME_CHANGED_ACTION";
@@ -48,12 +52,11 @@ import com.google.android.exoplayer2.util.Util;
   private final Handler eventHandler;
   private final Listener listener;
   private final AudioManager audioManager;
-  private final VolumeChangeReceiver receiver;
 
+  @Nullable private VolumeChangeReceiver receiver;
   @C.StreamType private int streamType;
   private int volume;
   private boolean muted;
-  private boolean released;
 
   /** Creates a manager. */
   public StreamVolumeManager(Context context, Handler eventHandler, Listener listener) {
@@ -68,9 +71,14 @@ import com.google.android.exoplayer2.util.Util;
     volume = getVolumeFromManager(audioManager, streamType);
     muted = getMutedFromManager(audioManager, streamType);
 
-    receiver = new VolumeChangeReceiver();
+    VolumeChangeReceiver receiver = new VolumeChangeReceiver();
     IntentFilter filter = new IntentFilter(VOLUME_CHANGED_ACTION);
-    applicationContext.registerReceiver(receiver, filter);
+    try {
+      applicationContext.registerReceiver(receiver, filter);
+      this.receiver = receiver;
+    } catch (RuntimeException e) {
+      Log.w(TAG, "Error registering stream volume receiver", e);
+    }
   }
 
   /** Sets the audio stream type. */
@@ -159,11 +167,14 @@ import com.google.android.exoplayer2.util.Util;
 
   /** Releases the manager. It must be called when the manager is no longer required. */
   public void release() {
-    if (released) {
-      return;
+    if (receiver != null) {
+      try {
+        applicationContext.unregisterReceiver(receiver);
+      } catch (RuntimeException e) {
+        Log.w(TAG, "Error unregistering stream volume receiver", e);
+      }
+      receiver = null;
     }
-    applicationContext.unregisterReceiver(receiver);
-    released = true;
   }
 
   private void updateVolumeAndNotifyIfChanged() {