Tweak stop/disable cycles.

library/src/main/java/com/google/android/exoplayer/MediaCodecAudioTrackRenderer.java

@@ -417,11 +417,11 @@ public class MediaCodecAudioTrackRenderer extends MediaCodecTrackRenderer {
 
   @Override
   protected void onStopped() {
-    super.onStopped();
     if (audioTrack != null) {
       resetSyncParams();
       audioTrack.pause();
     }
+    super.onStopped();
   }
 
   @Override
@@ -563,9 +563,12 @@ public class MediaCodecAudioTrackRenderer extends MediaCodecTrackRenderer {
 
   @Override
   protected void onDisabled() {
-    super.onDisabled();
-    releaseAudioTrack();
     audioSessionId = 0;
+    try {
+      releaseAudioTrack();
+    } finally {
+      super.onDisabled();
+    }
   }
 
   @Override

library/src/main/java/com/google/android/exoplayer/MediaCodecVideoTrackRenderer.java

@@ -269,20 +269,20 @@ public class MediaCodecVideoTrackRenderer extends MediaCodecTrackRenderer {
 
   @Override
   protected void onStopped() {
-    super.onStopped();
     joiningDeadlineUs = -1;
     notifyAndResetDroppedFrameCount();
+    super.onStopped();
   }
 
   @Override
   public void onDisabled() {
-    super.onDisabled();
     currentWidth = -1;
     currentHeight = -1;
     currentPixelWidthHeightRatio = -1;
     lastReportedWidth = -1;
     lastReportedHeight = -1;
     lastReportedPixelWidthHeightRatio = -1;
+    super.onDisabled();
   }
 
   @Override

library/src/main/java/com/google/android/exoplayer/chunk/ChunkSampleSource.java

@@ -238,14 +238,17 @@ public class ChunkSampleSource implements SampleSource, Loader.Callback {
     Assertions.checkState(track == 0);
     pendingDiscontinuity = false;
     state = STATE_PREPARED;
-    loadControl.unregister(this);
-    chunkSource.disable(mediaChunks);
-    if (loader.isLoading()) {
-      loader.cancelLoading();
-    } else {
-      clearMediaChunks();
-      clearCurrentLoadable();
-      loadControl.trimAllocator();
+    try {
+      chunkSource.disable(mediaChunks);
+    } finally {
+      loadControl.unregister(this);
+      if (loader.isLoading()) {
+        loader.cancelLoading();
+      } else {
+        clearMediaChunks();
+        clearCurrentLoadable();
+        loadControl.trimAllocator();
+      }
     }
   }