Ensure `DRAIN_ACTION_FLUSH_AND_UPDATE_DRM_SESSION` is always executed

`codecDrainAction` is set to `DRAIN_ACTION_NONE` in 3 places in
`MediaCodecRenderer`:
* The constructor (so there's no prior state to worry about)
* `updateDrmSessionV23()`: Where `mediaCrypto` is reconfigured based
  on `sourceDrmSession` and `codecDrmSession` is also updated to
  `sourceDrmSession`.
* `resetCodecStateForFlush()`: Where (before this change) the action
  is unconditionally set back to `DRAIN_ACTION_NONE` and so any
  required updated implied by
  `DRAIN_ACTION_FLUSH_AND_UPDATE_DRM_SESSION` is not done.

This change ensures that `flushOrReleaseCodec()` handles
`DRAIN_ACTION_FLUSH_AND_UPDATE_DRM_SESSION` before calling .

This probably also resolves Issue: google/ExoPlayer#10274

#minor-release

PiperOrigin-RevId: 454114428
(cherry picked from commit 222faa96)

RELEASENOTES.md

@@ -69,6 +69,10 @@
         for audio passthrough when the format audio channel count is unset,
         for audio passthrough when the format audio channel count is unset,
         which occurs with HLS chunkless preparation
         which occurs with HLS chunkless preparation
         ([10204](https://github.com/google/ExoPlayer/issues/10204)).
         ([10204](https://github.com/google/ExoPlayer/issues/10204)).
+*   DRM
+    *   Ensure the DRM session is always correctly updated when seeking
+        immediately after a format change
+        ([10274](https://github.com/google/ExoPlayer/issues/10274)).
 *   Ad playback / IMA:
 *   Ad playback / IMA:
     *   Decrease ad polling rate from every 100ms to every 200ms, to line up
     *   Decrease ad polling rate from every 100ms to every 200ms, to line up
         with Media Rating Council (MRC) recommendations.
         with Media Rating Council (MRC) recommendations.

libraries/exoplayer/src/main/java/androidx/media3/exoplayer/mediacodec/MediaCodecRenderer.java

@@ -856,6 +856,19 @@ public abstract class MediaCodecRenderer extends BaseRenderer {
       releaseCodec();
       releaseCodec();
       return true;
       return true;
     }
     }
+    if (codecDrainAction == DRAIN_ACTION_FLUSH_AND_UPDATE_DRM_SESSION) {
+      checkState(Util.SDK_INT >= 23); // Implied by DRAIN_ACTION_FLUSH_AND_UPDATE_DRM_SESSION
+      // Needed to keep lint happy (it doesn't understand the checkState call alone)
+      if (Util.SDK_INT >= 23) {
+        try {
+          updateDrmSessionV23();
+        } catch (ExoPlaybackException e) {
+          Log.w(TAG, "Failed to update the DRM session, releasing the codec instead.", e);
+          releaseCodec();
+          return true;
+        }
+      }
+    }
     flushCodec();
     flushCodec();
     return false;
     return false;
   }
   }