Add `release` method to Renderer and AudioSink

* Add `release` method to Renderer and AudioSink interfaces.
* Call the `release` method for renderers when the ExoPlayer is going to be released.

PiperOrigin-RevId: 517135677

library/core/src/main/java/com/google/android/exoplayer2/BaseRenderer.java

@@ -193,6 +193,12 @@ public abstract class BaseRenderer implements Renderer, RendererCapabilities {
     onReset();
   }
 
+  @Override
+  public final void release() {
+    Assertions.checkState(state == STATE_DISABLED);
+    onRelease();
+  }
+
   // RendererCapabilities implementation.
 
   @Override
@@ -299,6 +305,15 @@ public abstract class BaseRenderer implements Renderer, RendererCapabilities {
     // Do nothing.
   }
 
+  /**
+   * Called when the renderer is released.
+   *
+   * <p>The default implementation is a no-op.
+   */
+  protected void onRelease() {
+    // Do nothing.
+  }
+
   // Methods to be called by subclasses.
 
   /**

library/core/src/main/java/com/google/android/exoplayer2/ExoPlayerImplInternal.java

@@ -1402,6 +1402,7 @@ import java.util.concurrent.atomic.AtomicBoolean;
         /* resetPosition= */ false,
         /* releaseMediaSourceList= */ true,
         /* resetError= */ false);
+    releaseRenderers();
     loadControl.onReleased();
     setState(Player.STATE_IDLE);
     if (internalPlaybackThread != null) {
@@ -2538,6 +2539,12 @@ import java.util.concurrent.atomic.AtomicBoolean;
     }
   }
 
+  private void releaseRenderers() {
+    for (Renderer renderer : renderers) {
+      renderer.release();
+    }
+  }
+
   private void handleLoadingMediaPeriodChanged(boolean loadingTrackSelectionChanged) {
     MediaPeriodHolder loadingMediaPeriodHolder = queue.getLoadingPeriod();
     MediaPeriodId loadingMediaPeriodId =

library/core/src/main/java/com/google/android/exoplayer2/Renderer.java

@@ -516,4 +516,11 @@ public interface Renderer extends PlayerMessage.Target {
    * #STATE_DISABLED}.
    */
   void reset();
+
+  /**
+   * Releases the renderer.
+   *
+   * <p>The renderer must not be used after calling this method.
+   */
+  default void release() {}
 }

library/core/src/main/java/com/google/android/exoplayer2/audio/AudioSink.java

@@ -481,4 +481,7 @@ public interface AudioSink {
 
   /** Resets the sink, releasing any resources that it currently holds. */
   void reset();
+
+  /** Releases the audio sink. */
+  default void release() {}
 }

library/core/src/main/java/com/google/android/exoplayer2/audio/MediaCodecAudioRenderer.java

@@ -623,6 +623,11 @@ public class MediaCodecAudioRenderer extends MediaCodecRenderer implements Media
   }
 
   @Override
+  protected void onRelease() {
+    audioSink.release();
+  }
+
+  @Override
   public boolean isEnded() {
     return super.isEnded() && audioSink.isEnded();
   }