Don't enqueue ad periods that start after the end of the period

Issue: #2215
PiperOrigin-RevId: 747376615

Author: marcbaechinger

RELEASENOTES.md

@@ -2981,6 +2981,10 @@ This release corresponds to the
 *   Ad playback / IMA:
     *   Decrease ad polling rate from every 100ms to every 200ms, to line up
         with Media Rating Council (MRC) recommendations.
+    *   Fix bug where ad groups after the end of a VOD window stalled playback.
+        Ads groups with a start time after the window are not enqueued into the
+        `MediaPeriodQueue` anymore
+        ([#2215](https://github.com/androidx/media/issues/2215)).
 *   FFmpeg extension:
     *   Update CMake version to `3.21.0+` to avoid a CMake bug causing
         AndroidStudio's gradle sync to fail

libraries/common/src/main/java/androidx/media3/common/AdPlaybackState.java

@@ -865,7 +865,10 @@ && getAdGroup(index).timeUs <= positionUs)
             || !getAdGroup(index).shouldPlayAdGroup())) {
       index++;
     }
-    return index < adGroupCount ? index : C.INDEX_UNSET;
+    return index < adGroupCount
+            && (periodDurationUs == C.TIME_UNSET || getAdGroup(index).timeUs <= periodDurationUs)
+        ? index
+        : C.INDEX_UNSET;
   }
 
   /** Returns whether the specified ad has been marked as in {@link #AD_STATE_ERROR}. */

libraries/common/src/test/java/androidx/media3/common/AdPlaybackStateTest.java

@@ -856,6 +856,10 @@ public void endsWithLivePostrollPlaceHolder_emptyAdPlaybackState_postrollNotDete
             state.getAdGroupIndexAfterPositionUs(
                 /* positionUs= */ C.TIME_END_OF_SOURCE, /* periodDurationUs= */ 5000))
         .isEqualTo(C.INDEX_UNSET);
+    assertThat(
+            state.getAdGroupIndexAfterPositionUs(
+                /* positionUs= */ 1001, /* periodDurationUs= */ 1002))
+        .isEqualTo(C.INDEX_UNSET);
   }
 
   @Test

libraries/exoplayer_ima/src/main/java/androidx/media3/exoplayer/ima/AdTagLoader.java

@@ -868,7 +868,7 @@ private void handlePlayerStateChanged(boolean playWhenReady, @Player.State int p
     }
 
     if (imaAdState == IMA_AD_STATE_NONE
-        && playbackState == Player.STATE_BUFFERING
+        && (playbackState == Player.STATE_BUFFERING || playbackState == Player.STATE_ENDED)
         && playWhenReady) {
       ensureSentContentCompleteIfAtEndOfStream();
     } else if (imaAdState != IMA_AD_STATE_NONE && playbackState == Player.STATE_ENDED) {