Merge MuxerWrapper stop() and release() methods

#minor-release

PiperOrigin-RevId: 354938190

library/transformer/src/main/java/com/google/android/exoplayer2/transformer/FrameworkMuxer.java

@@ -138,33 +138,39 @@ import java.nio.ByteBuffer;
   }
 
   @Override
-  public void release() {
+  public void release(boolean forCancellation) {
-    if (isStarted) {
+    if (!isStarted) {
-      isStarted = false;
+      mediaMuxer.release();
-      try {
+      return;
-        mediaMuxer.stop();
+    }
-      } catch (IllegalStateException e) {
+
-        if (SDK_INT < 30) {
+    isStarted = false;
-          // Set the muxer state to stopped even if mediaMuxer.stop() failed so that
+    try {
-          // mediaMuxer.release() doesn't attempt to stop the muxer and therefore doesn't throw the
+      mediaMuxer.stop();
-          // same exception without releasing its resources. This is already implemented in
+    } catch (IllegalStateException e) {
-          // MediaMuxer
+      if (SDK_INT < 30) {
-          // from API level 30.
+        // Set the muxer state to stopped even if mediaMuxer.stop() failed so that
-          try {
+        // mediaMuxer.release() doesn't attempt to stop the muxer and therefore doesn't throw the
-            Field muxerStoppedStateField = MediaMuxer.class.getDeclaredField("MUXER_STATE_STOPPED");
+        // same exception without releasing its resources. This is already implemented in MediaMuxer
-            muxerStoppedStateField.setAccessible(true);
+        // from API level 30.
-            int muxerStoppedState = castNonNull((Integer) muxerStoppedStateField.get(mediaMuxer));
+        try {
-            Field muxerStateField = MediaMuxer.class.getDeclaredField("mState");
+          Field muxerStoppedStateField = MediaMuxer.class.getDeclaredField("MUXER_STATE_STOPPED");
-            muxerStateField.setAccessible(true);
+          muxerStoppedStateField.setAccessible(true);
-            muxerStateField.set(mediaMuxer, muxerStoppedState);
+          int muxerStoppedState = castNonNull((Integer) muxerStoppedStateField.get(mediaMuxer));
-          } catch (Exception reflectionException) {
+          Field muxerStateField = MediaMuxer.class.getDeclaredField("mState");
-            // Do nothing.
+          muxerStateField.setAccessible(true);
-          }
+          muxerStateField.set(mediaMuxer, muxerStoppedState);
+        } catch (Exception reflectionException) {
+          // Do nothing.
         }
+      }
+      // It doesn't matter that stopping the muxer throws if the transformation is being cancelled.
+      if (!forCancellation) {
         throw e;
       }
+    } finally {
+      mediaMuxer.release();
     }
-    mediaMuxer.release();
   }
 
   /**

library/transformer/src/main/java/com/google/android/exoplayer2/transformer/Muxer.java

@@ -84,6 +84,11 @@ import java.nio.ByteBuffer;
   void writeSampleData(
       int trackIndex, ByteBuffer data, boolean isKeyFrame, long presentationTimeUs);
 
-  /** Releases any resources associated with muxing. */
+  /**
-  void release();
+   * Releases any resources associated with muxing.
+   *
+   * @param forCancellation Whether the reason for releasing the resources is the transformation
+   *     cancellation.
+   */
+  void release(boolean forCancellation);
 }

library/transformer/src/main/java/com/google/android/exoplayer2/transformer/MuxerWrapper.java

@@ -159,24 +159,16 @@ import java.nio.ByteBuffer;
   }
 
   /**
-   * Stops the muxer.
+   * Releases any resources associated with muxing.
    *
-   * <p>The muxer cannot be used anymore once it is stopped.
+   * <p>The muxer cannot be used anymore once this method has been called.
-   */
-  public void stop() {
-    if (isReady) {
-      isReady = false;
-    }
-  }
-
-  /**
-   * Releases the muxer.
    *
-   * <p>The muxer cannot be used anymore once it is released.
+   * @param forCancellation Whether the reason for releasing the resources is the transformation
+   *     cancellation.
    */
-  public void release() {
+  public void release(boolean forCancellation) {
     isReady = false;
-    muxer.release();
+    muxer.release(forCancellation);
   }
 
   /** Returns the number of {@link #registerTrack() registered} tracks. */

library/transformer/src/main/java/com/google/android/exoplayer2/transformer/Transformer.java

@@ -525,36 +525,27 @@ public final class Transformer {
    * @throws IllegalStateException If this method is called from the wrong thread.
    */
   public void cancel() {
-    // It doesn't matter that stopping the muxer throws, because the transformation is cancelled
+    releaseResources(/* forCancellation= */ true);
-    // anyway.
-    releaseResources(/* swallowStopMuxerException= */ true);
   }
 
   /**
    * Releases the resources.
    *
-   * @param swallowStopMuxerException Whether to swallow exceptions thrown by stopping the muxer.
+   * @param forCancellation Whether the reason for releasing the resources is the transformation
+   *     cancellation.
    * @throws IllegalStateException If this method is called from the wrong thread.
-   * @throws IllegalStateException If the muxer is in the wrong state when stopping it and {@code
+   * @throws IllegalStateException If the muxer is in the wrong state and {@code forCancellation} is
-   *     swallowStopMuxerException} is false.
+   *     false.
    */
-  private void releaseResources(boolean swallowStopMuxerException) {
+  private void releaseResources(boolean forCancellation) {
     verifyApplicationThread();
     if (player != null) {
       player.release();
       player = null;
     }
     if (muxerWrapper != null) {
-      try {
+      muxerWrapper.release(forCancellation);
-        muxerWrapper.stop();
+      muxerWrapper = null;
-      } catch (IllegalStateException e) {
-        if (!swallowStopMuxerException) {
-          throw e;
-        }
-      } finally {
-        muxerWrapper.release();
-        muxerWrapper = null;
-      }
     }
     progressState = PROGRESS_STATE_NO_TRANSFORMATION;
   }
@@ -654,7 +645,7 @@ public final class Transformer {
 
     private void handleTransformationEnded(@Nullable Exception exception) {
       try {
-        releaseResources(/* swallowStopMuxerException= */ false);
+        releaseResources(/* forCancellation= */ false);
       } catch (IllegalStateException e) {
         if (exception == null) {
           exception = e;

library/transformer/src/test/java/com/google/android/exoplayer2/transformer/TestMuxer.java

@@ -62,9 +62,9 @@ public final class TestMuxer implements Muxer, Dumper.Dumpable {
   }
 
   @Override
-  public void release() {
+  public void release(boolean forCancellation) {
     dumpables.add(dumper -> dumper.add("released", true));
-    frameworkMuxer.release();
+    frameworkMuxer.release(forCancellation);
   }
 
   // Dumper.Dumpable implementation.