Correctly update output info if previous stream has been fully rendered

The output info for a new stream is marked pending until the last
sample of the previous stream has been processed. However, this fails
if the previous stream has already been fully processed. We need to
detect this case explicitly to avoid signalling the output change one
sample too late.

#minor-release

PiperOrigin-RevId: 512572854

library/core/src/main/java/com/google/android/exoplayer2/mediacodec/MediaCodecRenderer.java

@@ -358,6 +358,7 @@ private static String buildCustomDiagnosticInfo(int errorCode) {
   @Nullable private ExoPlaybackException pendingPlaybackException;
   protected DecoderCounters decoderCounters;
   private OutputStreamInfo outputStreamInfo;
+  private long lastProcessedOutputBufferTimeUs;
 
   /**
    * @param trackType The {@link C.TrackType track type} that the renderer handles.
@@ -409,6 +410,7 @@ public MediaCodecRenderer(
     codecHotswapDeadlineMs = C.TIME_UNSET;
     largestQueuedPresentationTimeUs = C.TIME_UNSET;
     lastBufferInStreamPresentationTimeUs = C.TIME_UNSET;
+    lastProcessedOutputBufferTimeUs = C.TIME_UNSET;
     codecDrainState = DRAIN_STATE_NONE;
     codecDrainAction = DRAIN_ACTION_NONE;
   }
@@ -638,8 +640,11 @@ protected void onEnabled(boolean joining, boolean mayRenderStartOfStream)
   @Override
   protected void onStreamChanged(Format[] formats, long startPositionUs, long offsetUs)
       throws ExoPlaybackException {
-    if (outputStreamInfo.streamOffsetUs == C.TIME_UNSET) {
-      checkState(outputStreamInfo.startPositionUs == C.TIME_UNSET);
+    if (outputStreamInfo.streamOffsetUs == C.TIME_UNSET
+        || (pendingOutputStreamChanges.isEmpty()
+            && lastProcessedOutputBufferTimeUs != C.TIME_UNSET
+            && lastProcessedOutputBufferTimeUs >= largestQueuedPresentationTimeUs)) {
+      // This is the first stream, or the previous has been fully output already.
       setOutputStreamInfo(
           new OutputStreamInfo(
               /* previousStreamLastBufferTimeUs= */ C.TIME_UNSET, startPositionUs, offsetUs));
@@ -873,6 +878,7 @@ protected void resetCodecStateForFlush() {
     decodeOnlyPresentationTimestamps.clear();
     largestQueuedPresentationTimeUs = C.TIME_UNSET;
     lastBufferInStreamPresentationTimeUs = C.TIME_UNSET;
+    lastProcessedOutputBufferTimeUs = C.TIME_UNSET;
     if (c2Mp3TimestampTracker != null) {
       c2Mp3TimestampTracker.reset();
     }
@@ -1586,6 +1592,7 @@ protected void onQueueInputBuffer(DecoderInputBuffer buffer) throws ExoPlaybackE
    */
   @CallSuper
   protected void onProcessedOutputBuffer(long presentationTimeUs) {
+    lastProcessedOutputBufferTimeUs = presentationTimeUs;
     if (!pendingOutputStreamChanges.isEmpty()
         && presentationTimeUs >= pendingOutputStreamChanges.peek().previousStreamLastBufferTimeUs) {
       setOutputStreamInfo(pendingOutputStreamChanges.poll());