Remove ACTION_BUFFERING, update buffering only if needed

- ACTION_BUFFERING was just wrong: why should the user be able to trigger the internal onBuffering() state by pressing on the buffering button? So that was replaced by a null intent, doing nothing.
- Now updating notification in onBuffering() only when buffering actions are not already buffering, to prevent useless updates

app/src/main/java/org/schabi/newpipe/player/MainPlayer.java

@@ -76,8 +76,6 @@ public final class MainPlayer extends Service {
             = "org.schabi.newpipe.player.MainPlayer.ACTION_FAST_REWIND";
     static final String ACTION_FAST_FORWARD
             = "org.schabi.newpipe.player.MainPlayer.ACTION_FAST_FORWARD";
-    static final String ACTION_BUFFERING
-            = "org.schabi.newpipe.player.MainPlayer.ACTION_BUFFERING";
     static final String ACTION_SHUFFLE
             = "org.schabi.newpipe.player.MainPlayer.ACTION_SHUFFLE";
     public static final String ACTION_RECREATE_NOTIFICATION

app/src/main/java/org/schabi/newpipe/player/NotificationUtil.java

@@ -26,7 +26,6 @@ import java.util.List;
 import static android.app.PendingIntent.FLAG_UPDATE_CURRENT;
 import static com.google.android.exoplayer2.Player.REPEAT_MODE_ALL;
 import static com.google.android.exoplayer2.Player.REPEAT_MODE_ONE;
-import static org.schabi.newpipe.player.MainPlayer.ACTION_BUFFERING;
 import static org.schabi.newpipe.player.MainPlayer.ACTION_CLOSE;
 import static org.schabi.newpipe.player.MainPlayer.ACTION_FAST_FORWARD;
 import static org.schabi.newpipe.player.MainPlayer.ACTION_FAST_REWIND;
@@ -147,9 +146,19 @@ public final class NotificationUtil {
     }
 
 
-    boolean hasSlotWithBuffering() {
+    @SuppressLint("RestrictedApi")
-        return notificationSlots[1] == NotificationConstants.PLAY_PAUSE_BUFFERING
+    boolean shouldUpdateBufferingSlot() {
-                || notificationSlots[2] == NotificationConstants.PLAY_PAUSE_BUFFERING;
+        if (notificationBuilder.mActions.size() < 3) {
+            // this should never happen, but let's make sure notification actions are populated
+            return true;
+        }
+
+        // only second and third slot could contain PLAY_PAUSE_BUFFERING, update them only if they
+        // are not already in the buffering state (the only one with a null action intent)
+        return (notificationSlots[1] == NotificationConstants.PLAY_PAUSE_BUFFERING
+                && notificationBuilder.mActions.get(1).actionIntent != null)
+                || (notificationSlots[2] == NotificationConstants.PLAY_PAUSE_BUFFERING
+                && notificationBuilder.mActions.get(2).actionIntent != null);
     }
 
 
@@ -264,8 +273,10 @@ public final class NotificationUtil {
                 if (player.getCurrentState() == BasePlayer.STATE_PREFLIGHT
                         || player.getCurrentState() == BasePlayer.STATE_BLOCKED
                         || player.getCurrentState() == BasePlayer.STATE_BUFFERING) {
-                    return getAction(player, R.drawable.ic_hourglass_top_white_24dp_png,
+                    // null intent -> show hourglass icon that does nothing when clicked
-                            R.string.notification_action_buffering, ACTION_BUFFERING);
+                    return new NotificationCompat.Action(R.drawable.ic_hourglass_top_white_24dp_png,
+                            player.context.getString(R.string.notification_action_buffering),
+                            null);
                 } else if (player.isPlaying()) {
                     return getAction(player, R.drawable.exo_notification_pause,
                             R.string.exo_controls_pause_description, ACTION_PLAY_PAUSE);

app/src/main/java/org/schabi/newpipe/player/VideoPlayerImpl.java

@@ -105,7 +105,6 @@ import java.util.List;
 
 import static android.content.Context.WINDOW_SERVICE;
 import static android.content.res.Configuration.ORIENTATION_LANDSCAPE;
-import static org.schabi.newpipe.player.MainPlayer.ACTION_BUFFERING;
 import static org.schabi.newpipe.player.MainPlayer.ACTION_CLOSE;
 import static org.schabi.newpipe.player.MainPlayer.ACTION_FAST_FORWARD;
 import static org.schabi.newpipe.player.MainPlayer.ACTION_FAST_REWIND;
@@ -191,8 +190,6 @@ public class VideoPlayerImpl extends VideoPlayer
     private boolean isVerticalVideo = false;
     private boolean fragmentIsVisible = false;
     boolean shouldUpdateOnProgress;
-    private boolean isForwardPressed;
-    private boolean isRewindPressed;
 
     private final MainPlayer service;
     private PlayerServiceEventListener fragmentListener;
@@ -1081,18 +1078,10 @@ public class VideoPlayerImpl extends VideoPlayer
         super.onBuffering();
         getRootView().setKeepScreenOn(true);
 
-        if (NotificationUtil.getInstance().hasSlotWithBuffering()
+        if (NotificationUtil.getInstance().shouldUpdateBufferingSlot()) {
-                && (getCurrentState() == BasePlayer.STATE_PREFLIGHT
-                || getCurrentState() == BasePlayer.STATE_BLOCKED
-                || getCurrentState() == BasePlayer.STATE_BUFFERING)) {
-            if (isForwardPressed || isRewindPressed) {
-                isForwardPressed = false;
-                isRewindPressed = false;
-            } else {
             NotificationUtil.getInstance().createNotificationIfNeededAndUpdate(this, false);
         }
     }
-    }
 
     @Override
     public void onPlaying() {
@@ -1186,7 +1175,6 @@ public class VideoPlayerImpl extends VideoPlayer
         intentFilter.addAction(ACTION_PLAY_NEXT);
         intentFilter.addAction(ACTION_FAST_REWIND);
         intentFilter.addAction(ACTION_FAST_FORWARD);
-        intentFilter.addAction(ACTION_BUFFERING);
         intentFilter.addAction(ACTION_SHUFFLE);
         intentFilter.addAction(ACTION_RECREATE_NOTIFICATION);
 
@@ -1222,11 +1210,9 @@ public class VideoPlayerImpl extends VideoPlayer
                 onPlayPrevious();
                 break;
             case ACTION_FAST_FORWARD:
-                isForwardPressed = true;
                 onFastForward();
                 break;
             case ACTION_FAST_REWIND:
-                isRewindPressed = true;
                 onFastRewind();
                 break;
             case ACTION_PLAY_PAUSE:
@@ -1240,9 +1226,6 @@ public class VideoPlayerImpl extends VideoPlayer
             case ACTION_REPEAT:
                 onRepeatClicked();
                 break;
-            case ACTION_BUFFERING:
-                onBuffering();
-                break;
             case ACTION_SHUFFLE:
                 onShuffleClicked();
                 break;