Add ad event listeners in the Looper event of the ad manager callback

#minor-release

PiperOrigin-RevId: 509189206
(cherry picked from commit 5192962)

RELEASENOTES.md

@@ -103,6 +103,8 @@ This release corresponds to the
  * Add a method `focusSkipButton()` to the
  `ImaServerSideAdInsertionMediaSource.AdsLoader` to programmatically
  request to focus the skip button.
+ * Fix a bug which prevented playback from starting for a DAI stream
+ without any ads.
  * Bump IMA SDK version to 3.29.0.
 * Demo app:
  * Request notification permission for download notifications at runtime

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

@@ -554,11 +554,10 @@ public void prepareSourceInternal(@Nullable TransferListener mediaTransferListen
  StreamManagerLoadable streamManagerLoadable =
  new StreamManagerLoadable(
  sdkAdsLoader,
- adsLoader.configuration,
+ /* imaServerSideAdInsertionMediaSource= */ this,
  streamRequest,
  streamPlayer,
- applicationAdErrorListener,
- loadVideoTimeoutMs);
+ applicationAdErrorListener);
  loader.startLoading(
  streamManagerLoadable,
  new StreamManagerLoadableCallback(),
@@ -633,7 +632,6 @@ private void setStreamManager(@Nullable StreamManager streamManager) {
  }
  this.streamManager.removeAdEventListener(componentListener);
  this.streamManager.destroy();
- this.streamManager = null;
  }
  this.streamManager = streamManager;
  if (streamManager != null) {
@@ -644,6 +642,12 @@ private void setStreamManager(@Nullable StreamManager streamManager) {
  if (applicationAdErrorListener != null) {
  streamManager.addAdErrorListener(applicationAdErrorListener);
  }
+ AdsRenderingSettings adsRenderingSettings =
+ ImaSdkFactory.getInstance().createAdsRenderingSettings();
+ adsRenderingSettings.setLoadVideoTimeout(loadVideoTimeoutMs);
+ adsRenderingSettings.setFocusSkipButtonWhenAvailable(
+ adsLoader.configuration.focusSkipButtonWhenAvailable);
+ streamManager.init(adsRenderingSettings);
  }
  }
 
@@ -952,7 +956,6 @@ private final class StreamManagerLoadableCallback
  @Override
  public void onLoadCompleted(
  StreamManagerLoadable loadable, long elapsedRealtimeMs, long loadDurationMs) {
- mainHandler.post(() -> setStreamManager(checkNotNull(loadable.getStreamManager())));
  setContentUri(checkNotNull(loadable.getContentUri()));
  }
 
@@ -983,14 +986,12 @@ private static class StreamManagerLoadable
  implements Loadable, AdsLoadedListener, AdErrorListener {
 
  private final com.google.ads.interactivemedia.v3.api.AdsLoader adsLoader;
- private final ServerSideAdInsertionConfiguration serverSideAdInsertionConfiguration;
+ private final ImaServerSideAdInsertionMediaSource imaServerSideAdInsertionMediaSource;
  private final StreamRequest request;
  private final StreamPlayer streamPlayer;
  @Nullable private final AdErrorListener adErrorListener;
- private final int loadVideoTimeoutMs;
  private final ConditionVariable conditionVariable;
 
- @Nullable private volatile StreamManager streamManager;
  @Nullable private volatile Uri contentUri;
  private volatile boolean cancelled;
  private volatile boolean error;
@@ -1000,17 +1001,15 @@ private static class StreamManagerLoadable
  /** Creates an instance. */
  private StreamManagerLoadable(
  com.google.ads.interactivemedia.v3.api.AdsLoader adsLoader,
- ServerSideAdInsertionConfiguration serverSideAdInsertionConfiguration,
+ ImaServerSideAdInsertionMediaSource imaServerSideAdInsertionMediaSource,
  StreamRequest request,
  StreamPlayer streamPlayer,
- @Nullable AdErrorListener adErrorListener,
- int loadVideoTimeoutMs) {
+ @Nullable AdErrorListener adErrorListener) {
  this.adsLoader = adsLoader;
- this.serverSideAdInsertionConfiguration = serverSideAdInsertionConfiguration;
+ this.imaServerSideAdInsertionMediaSource = imaServerSideAdInsertionMediaSource;
  this.request = request;
  this.streamPlayer = streamPlayer;
  this.adErrorListener = adErrorListener;
- this.loadVideoTimeoutMs = loadVideoTimeoutMs;
  conditionVariable = new ConditionVariable();
  errorCode = -1;
  }
@@ -1021,12 +1020,6 @@ public Uri getContentUri() {
  return contentUri;
  }
 
- /** Returns the stream manager or null if not yet loaded. */
- @Nullable
- public StreamManager getStreamManager() {
- return streamManager;
- }
-
  // Implement Loadable.
 
  @Override
@@ -1080,14 +1073,7 @@ public void onAdsManagerLoaded(AdsManagerLoadedEvent event) {
  conditionVariable.open();
  return;
  }
- AdsRenderingSettings adsRenderingSettings =
- ImaSdkFactory.getInstance().createAdsRenderingSettings();
- adsRenderingSettings.setLoadVideoTimeout(loadVideoTimeoutMs);
- adsRenderingSettings.setFocusSkipButtonWhenAvailable(
- serverSideAdInsertionConfiguration.focusSkipButtonWhenAvailable);
- // After initialization completed the streamUri will be reported to the streamPlayer.
- streamManager.init(adsRenderingSettings);
- this.streamManager = streamManager;
+ imaServerSideAdInsertionMediaSource.setStreamManager(streamManager);
  }
 
  // AdErrorEvent.AdErrorListener implementation.