Clear cached encoders in ShadowMediaCodecConfig#after()

Instead of calling it in the tests setup, the change modifies ShadowMediaCodecConfig#after() method to call EncoderUtil#clearCachedEncoders().

PiperOrigin-RevId: 748625111

libraries/test_utils_robolectric/build.gradle

@@ -30,6 +30,7 @@ dependencies {
     implementation 'androidx.annotation:annotation:' + androidxAnnotationVersion
     implementation 'org.robolectric:robolectric:' + robolectricVersion
     api project(modulePrefix + 'lib-exoplayer')
+    api project(modulePrefix + 'lib-transformer')
     api project(modulePrefix + 'test-utils')
 }
 

libraries/test_utils_robolectric/src/main/java/androidx/media3/test/utils/robolectric/ShadowMediaCodecConfig.java

@@ -23,6 +23,7 @@ import android.media.MediaFormat;
 import androidx.media3.common.MimeTypes;
 import androidx.media3.common.util.UnstableApi;
 import androidx.media3.exoplayer.mediacodec.MediaCodecUtil;
+import androidx.media3.transformer.EncoderUtil;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableSet;
 import com.google.common.primitives.Ints;
@@ -327,6 +328,7 @@ public final class ShadowMediaCodecConfig extends ExternalResource {
   @Override
   protected void after() {
     MediaCodecUtil.clearDecoderInfoCache();
+    EncoderUtil.clearCachedEncoders();
     ShadowMediaCodecList.reset();
     ShadowMediaCodec.clearCodecs();
   }

libraries/transformer/src/test/java/androidx/media3/transformer/CompositionExportTest.java

@@ -40,7 +40,6 @@ import androidx.media3.test.utils.robolectric.ShadowMediaCodecConfig;
 import androidx.test.core.app.ApplicationProvider;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
 import com.google.common.collect.ImmutableList;
-import org.junit.After;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.TemporaryFolder;
@@ -62,12 +61,6 @@ public class CompositionExportTest {
           /* decoders= */ ImmutableList.of(CODEC_INFO_RAW),
           /* encoders= */ ImmutableList.of(CODEC_INFO_AAC));
 
-  @After
-  public void tearDown() {
-    // TODO(b/406463016): Investigate moving this call to ShadowMediaCodecConfig#after() method.
-    EncoderUtil.clearCachedEncoders();
-  }
-
   @Test
   public void start_audioVideoTransmuxedFromDifferentSequences_matchesSingleSequenceResult()
       throws Exception {

libraries/transformer/src/test/java/androidx/media3/transformer/MediaItemExportTest.java

@@ -105,7 +105,6 @@ import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeoutException;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.concurrent.atomic.AtomicReference;
-import org.junit.After;
 import org.junit.Ignore;
 import org.junit.Rule;
 import org.junit.Test;
@@ -152,12 +151,6 @@ public final class MediaItemExportTest {
       ShadowMediaCodecConfig.withCodecs(
           /* decoders= */ ImmutableList.of(CODEC_INFO_RAW), /* encoders= */ ImmutableList.of());
 
-  @After
-  public void tearDown() {
-    // TODO(b/406463016): Investigate moving this call to ShadowMediaCodecConfig#after() method.
-    EncoderUtil.clearCachedEncoders();
-  }
-
   @Test
   public void start_gapOnlyExport_outputsSilence() throws Exception {
     shadowMediaCodecConfig.addEncoders(CODEC_INFO_AAC);

libraries/transformer/src/test/java/androidx/media3/transformer/ParameterizedAudioExportTest.java

@@ -44,7 +44,6 @@ import java.util.Arrays;
 import java.util.List;
 import java.util.Objects;
 import java.util.Set;
-import org.junit.After;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.TemporaryFolder;
@@ -137,12 +136,6 @@ public final class ParameterizedAudioExportTest {
   private final CapturingMuxer.Factory muxerFactory =
       new CapturingMuxer.Factory(/* handleAudioAsPcm= */ true);
 
-  @After
-  public void tearDown() {
-    // TODO(b/406463016): Investigate moving this call to ShadowMediaCodecConfig#after() method.
-    EncoderUtil.clearCachedEncoders();
-  }
-
   @Test
   public void export() throws Exception {
     Transformer transformer =

libraries/transformer/src/test/java/androidx/media3/transformer/ParameterizedItemExportTest.java

@@ -38,7 +38,6 @@ import androidx.media3.test.utils.robolectric.ShadowMediaCodecConfig;
 import androidx.test.core.app.ApplicationProvider;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableSet;
-import org.junit.After;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.rules.TemporaryFolder;
@@ -99,12 +98,6 @@ public final class ParameterizedItemExportTest {
           /* decoders= */ ImmutableList.of(CODEC_INFO_RAW),
           /* encoders= */ ImmutableList.of(CODEC_INFO_AAC));
 
-  @After
-  public void tearDown() {
-    // TODO(b/406463016): Investigate moving this call to ShadowMediaCodecConfig#after() method.
-    EncoderUtil.clearCachedEncoders();
-  }
-
   @Test
   public void export() throws Exception {
     boolean handleAudioAsPcm = !ENCODED_AUDIO_ASSETS.contains(assetFile);

libraries/transformer/src/test/java/androidx/media3/transformer/SequenceExportTest.java

@@ -43,7 +43,6 @@ import androidx.media3.test.utils.robolectric.ShadowMediaCodecConfig;
 import androidx.test.core.app.ApplicationProvider;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
 import com.google.common.collect.ImmutableList;
-import org.junit.After;
 import org.junit.Ignore;
 import org.junit.Rule;
 import org.junit.Test;
@@ -73,12 +72,6 @@ public final class SequenceExportTest {
           /* decoders= */ ImmutableList.of(CODEC_INFO_RAW),
           /* encoders= */ ImmutableList.of(CODEC_INFO_AAC));
 
-  @After
-  public void tearDown() {
-    // TODO(b/406463016): Investigate moving this call to ShadowMediaCodecConfig#after() method.
-    EncoderUtil.clearCachedEncoders();
-  }
-
   @Test
   public void start_concatenateSameMediaItemWithTransmux_completesSuccessfully() throws Exception {
     CapturingMuxer.Factory muxerFactory = new CapturingMuxer.Factory(/* handleAudioAsPcm= */ false);