Add debug info to help debugging a pipeline stall issue (2) (#25)

In #23, we've added some debug info to help debug an issue where the
rendering pipeline seems to be stalled.

This PR adds the processed buffer count to the debug info and also
renamed the queued input buffer count to make it clearer.

libraries/common/src/main/java/androidx/media3/common/util/Util.java

@@ -189,7 +189,8 @@ public final class Util {
   public static int audioLastFeedInputBufferStep = 0;
   public static int videoLastDrainOutputBufferStep = 0;
   public static int audioLastDrainOutputBufferStep = 0;
-  public static int currentAccumulatedVideoQueuedFrames = 0;
+  public static int currentQueuedInputBuffers = 0;
+  public static int currentProcessedOutputBuffers = 0;
 
   /** An empty long array. */
   @UnstableApi public static final long[] EMPTY_LONG_ARRAY = new long[0];

libraries/exoplayer/src/main/java/androidx/media3/exoplayer/video/MediaCodecVideoRenderer.java

@@ -734,7 +734,8 @@ protected void onStarted() {
     hasNotifiedAvDesyncError = false;
     hasNotifiedAvDesyncSkippedFramesError = false;
     queuedFrames = 0;
-    Util.currentAccumulatedVideoQueuedFrames = 0;
+    Util.currentQueuedInputBuffers = 0;
+    Util.currentProcessedOutputBuffers = 0;
 
     videoFrameReleaseControl.onStarted();
   }
@@ -1227,7 +1228,7 @@ protected void onQueueInputBuffer(DecoderInputBuffer buffer) throws ExoPlaybackE
 
     // MIREGO: added
     queuedFrames++;
-    Util.currentAccumulatedVideoQueuedFrames++;
+    Util.currentQueuedInputBuffers++;
     if (queuedFrames >= NOTIFY_QUEUED_FRAMES_THRESHOLD) {
       maybeNotifyQueuedFrames();
     }
@@ -1613,6 +1614,7 @@ private void onProcessedTunneledEndOfStream() {
   @CallSuper
   @Override
   protected void onProcessedOutputBuffer(long presentationTimeUs) {
+    Util.currentProcessedOutputBuffers++;
     super.onProcessedOutputBuffer(presentationTimeUs);
     if (!tunneling) {
       buffersInCodecCount--;