Rename the SamplePipelines

The old names are not really correct anymore because:
- The Audio/VideoTranscodingSamplePipelines do not decode anymore.
- The pipelines now mux the encoded data.

PiperOrigin-RevId: 499498446

libraries/transformer/src/main/java/androidx/media3/transformer/AudioSamplePipeline.java

@@ -36,7 +36,7 @@ import org.checkerframework.checker.nullness.qual.EnsuresNonNullIf;
 import org.checkerframework.dataflow.qual.Pure;
 
 /** Pipeline to process, re-encode and mux raw audio samples. */
-/* package */ final class AudioTranscodingSamplePipeline extends SamplePipeline {
+/* package */ final class AudioSamplePipeline extends SamplePipeline {
 
   private static final int DEFAULT_ENCODER_BITRATE = 128 * 1024;
 
@@ -53,7 +53,7 @@ import org.checkerframework.dataflow.qual.Pure;
   private long encoderBufferDurationRemainder;
 
   // TODO(b/260618558): Move silent audio generation upstream of this component.
-  public AudioTranscodingSamplePipeline(
+  public AudioSamplePipeline(
       Format inputFormat,
       long streamStartPositionUs,
       long streamOffsetUs,

libraries/transformer/src/main/java/androidx/media3/transformer/EncodedSamplePipeline.java

@@ -21,14 +21,14 @@ import androidx.media3.common.Format;
 import androidx.media3.decoder.DecoderInputBuffer;
 
 /** Pipeline that muxes encoded samples without any transcoding or transformation. */
-/* package */ final class PassthroughSamplePipeline extends SamplePipeline {
+/* package */ final class EncodedSamplePipeline extends SamplePipeline {
 
   private final DecoderInputBuffer buffer;
   private final Format format;
 
   private boolean hasPendingBuffer;
 
-  public PassthroughSamplePipeline(
+  public EncodedSamplePipeline(
       Format format,
       long streamStartPositionUs,
       TransformationRequest transformationRequest,

libraries/transformer/src/main/java/androidx/media3/transformer/TransformerInternal.java

@@ -505,7 +505,7 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
           (supportedOutputTypes & SUPPORTED_OUTPUT_TYPE_ENCODED) == 0;
       boolean shouldUseTranscodingPipeline = shouldTranscode || assetLoaderAlwaysDecodes;
       if (isAudio && shouldUseTranscodingPipeline) {
-        return new AudioTranscodingSamplePipeline(
+        return new AudioSamplePipeline(
             inputFormat,
             streamStartPositionUs,
             streamOffsetUs,
@@ -516,7 +516,7 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
             muxerWrapper,
             fallbackListener);
       } else if (shouldUseTranscodingPipeline) {
-        return new VideoTranscodingSamplePipeline(
+        return new VideoSamplePipeline(
             context,
             inputFormat,
             streamStartPositionUs,
@@ -530,7 +530,7 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
             fallbackListener,
             debugViewProvider);
       } else {
-        return new PassthroughSamplePipeline(
+        return new EncodedSamplePipeline(
             inputFormat,
             streamStartPositionUs,
             transformationRequest,

libraries/transformer/src/main/java/androidx/media3/transformer/VideoSamplePipeline.java

@@ -54,7 +54,7 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
 import org.checkerframework.dataflow.qual.Pure;
 
 /** Pipeline to process, re-encode and mux raw video frames. */
-/* package */ final class VideoTranscodingSamplePipeline extends SamplePipeline {
+/* package */ final class VideoSamplePipeline extends SamplePipeline {
 
   private final FrameProcessor frameProcessor;
   private final ColorInfo frameProcessorInputColor;
@@ -68,7 +68,7 @@ import org.checkerframework.dataflow.qual.Pure;
    */
   private volatile long finalFramePresentationTimeUs;
 
-  public VideoTranscodingSamplePipeline(
+  public VideoSamplePipeline(
       Context context,
       Format inputFormat,
       long streamStartPositionUs,
@@ -208,7 +208,7 @@ import org.checkerframework.dataflow.qual.Pure;
 
                 @Override
                 public void onFrameProcessingEnded() {
-                  VideoTranscodingSamplePipeline.this.finalFramePresentationTimeUs =
+                  VideoSamplePipeline.this.finalFramePresentationTimeUs =
                       lastProcessedFramePresentationTimeUs;
                   try {
                     encoderWrapper.signalEndOfInputStream();

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

@@ -40,7 +40,7 @@ import org.robolectric.shadows.MediaCodecInfoBuilder;
 import org.robolectric.shadows.ShadowMediaCodec;
 import org.robolectric.shadows.ShadowMediaCodecList;
 
-/** Unit tests for {@link VideoTranscodingSamplePipeline.EncoderWrapper}. */
+/** Unit tests for {@link VideoSamplePipeline.EncoderWrapper}. */
 @RunWith(AndroidJUnit4.class)
 public final class VideoEncoderWrapperTest {
   private final TransformationRequest emptyTransformationRequest =
@@ -52,8 +52,8 @@ public final class VideoEncoderWrapperTest {
           new ListenerSet<>(Looper.myLooper(), Clock.DEFAULT, (listener, flags) -> {}),
           Clock.DEFAULT.createHandler(Looper.myLooper(), /* callback= */ null),
           emptyTransformationRequest);
-  private final VideoTranscodingSamplePipeline.EncoderWrapper encoderWrapper =
+  private final VideoSamplePipeline.EncoderWrapper encoderWrapper =
-      new VideoTranscodingSamplePipeline.EncoderWrapper(
+      new VideoSamplePipeline.EncoderWrapper(
           fakeEncoderFactory,
           /* inputFormat= */ new Format.Builder().setSampleMimeType(MimeTypes.VIDEO_H264).build(),
           /* muxerSupportedMimeTypes= */ ImmutableList.of(MimeTypes.VIDEO_H264),