Merge MuxerWrapper stop() and release() methods

#minor-release

PiperOrigin-RevId: 354938190

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

@@ -138,8 +138,12 @@ import java.nio.ByteBuffer;
   }
 
   @Override
-  public void release() {
+  public void release(boolean forCancellation) {
-    if (isStarted) {
+    if (!isStarted) {
+      mediaMuxer.release();
+      return;
+    }
+
     isStarted = false;
     try {
       mediaMuxer.stop();
@@ -147,8 +151,7 @@ import java.nio.ByteBuffer;
       if (SDK_INT < 30) {
         // Set the muxer state to stopped even if mediaMuxer.stop() failed so that
         // mediaMuxer.release() doesn't attempt to stop the muxer and therefore doesn't throw the
-          // same exception without releasing its resources. This is already implemented in
+        // same exception without releasing its resources. This is already implemented in MediaMuxer
-          // MediaMuxer
         // from API level 30.
         try {
           Field muxerStoppedStateField = MediaMuxer.class.getDeclaredField("MUXER_STATE_STOPPED");
@@ -161,11 +164,14 @@ import java.nio.ByteBuffer;
           // Do nothing.
         }
       }
+      // It doesn't matter that stopping the muxer throws if the transformation is being cancelled.
+      if (!forCancellation) {
         throw e;
       }
-    }
+    } finally {
       mediaMuxer.release();
     }
+  }
 
   /**
    * Converts a {@link MimeTypes MIME type} into a {@link MediaMuxer.OutputFormat MediaMuxer output

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

@@ -525,37 +525,28 @@ 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();
-      } 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.