Rename occurrences of transform in lib-transformer

PiperOrigin-RevId: 510118760

Rename occurrences of transform in lib-transformer
PiperOrigin-RevId: 510118760
4cc5080d · kimvde · christosts · 37768ed0 · 4cc5080d · 4cc5080d
Commit 4cc5080d authored Feb 16, 2023 by kimvde Committed by christosts Feb 17, 2023
Showing with 115 additions and 128 deletions
library/transformer/src/androidTest/java/com/google/android/exoplayer2/transformer/FallbackDetails.java
library/transformer/src/androidTest/java/com/google/android/exoplayer2/transformer/TransformerAndroidTestRunner.java
library/transformer/src/androidTest/java/com/google/android/exoplayer2/transformer/mh/HdrEditingTest.java
library/transformer/src/androidTest/java/com/google/android/exoplayer2/transformer/mh/ToneMapHdrToSdrUsingMediaCodecTest.java
library/transformer/src/androidTest/java/com/google/android/exoplayer2/transformer/mh/ToneMapHdrToSdrUsingOpenGlTest.java
library/transformer/src/androidTest/java/com/google/android/exoplayer2/transformer/mh/TranscodeQualityTest.java
library/transformer/src/androidTest/java/com/google/android/exoplayer2/transformer/mh/analysis/SsimMapperTest.java
library/transformer/src/main/java/com/google/android/exoplayer2/transformer/ExoAssetLoaderBaseRenderer.java
library/transformer/src/main/java/com/google/android/exoplayer2/transformer/ExoPlayerAssetLoader.java
library/transformer/src/main/java/com/google/android/exoplayer2/transformer/FallbackListener.java
library/transformer/src/main/java/com/google/android/exoplayer2/transformer/FrameworkMuxer.java
library/transformer/src/main/java/com/google/android/exoplayer2/transformer/Muxer.java
library/transformer/src/main/java/com/google/android/exoplayer2/transformer/TransformerInternal.java
library/transformer/src/test/java/com/google/android/exoplayer2/transformer/TransformerEndToEndTest.java
library/transformer/src/test/java/com/google/android/exoplayer2/transformer/TransformerTestRunner.java
--- a/library/transformer/src/androidTest/java/com/google/android/exoplayer2/transformer/FallbackDetails.java
+++ b/library/transformer/src/androidTest/java/com/google/android/exoplayer2/transformer/FallbackDetails.java
@@ -23,8 +23,7 @@ import org.json.JSONException;
 import org.json.JSONObject;
 /**
- * A test only class for holding the details of what fallbacks were applied during a test
+ * A test only class for holding the details of what fallbacks were applied during a test export.
- * transformation.
 */
 /* package */ final class FallbackDetails {

--- a/library/transformer/src/androidTest/java/com/google/android/exoplayer2/transformer/TransformerAndroidTestRunner.java
+++ b/library/transformer/src/androidTest/java/com/google/android/exoplayer2/transformer/TransformerAndroidTestRunner.java
@@ -45,7 +45,7 @@ import org.json.JSONObject;
 public class TransformerAndroidTestRunner {
  private static final String TAG = "TransformerAndroidTest";
-  /** The default transformation timeout value. */
+  /** The default export timeout value. */
  public static final int DEFAULT_TIMEOUT_SECONDS = 120;
  /** A {@link Builder} for {@link TransformerAndroidTestRunner} instances. */
@@ -61,7 +61,7 @@ public class TransformerAndroidTestRunner {
     * Creates a {@link Builder}.
     *
     * @param context The {@link Context}.
-     * @param transformer The {@link Transformer} that performs the transformation.
+     * @param transformer The {@link Transformer} that performs the export.
     */
    public Builder(Context context, Transformer transformer) {
      this.context = context;
@@ -70,7 +70,7 @@ public class TransformerAndroidTestRunner {
    }
    /**
-     * Sets the timeout in seconds for a single transformation. An exception is thrown when this is
+     * Sets the timeout in seconds for a single export. An exception is thrown when this is
     * exceeded.
     *
     * <p>The default value is {@link #DEFAULT_TIMEOUT_SECONDS}.
@@ -85,7 +85,7 @@ public class TransformerAndroidTestRunner {
    }
    /**
-     * Sets whether to calculate the SSIM of the transformation output compared to the input, if
+     * Sets whether to calculate the SSIM of the exported output compared to the input, if
     * supported. Calculating SSIM is not supported if the input and output video dimensions don't
     * match, or if the input video is trimmed.
     *
@@ -104,8 +104,8 @@ public class TransformerAndroidTestRunner {
    }
    /**
-     * Sets whether to suppress failures that occurs as a result of post-transformation analysis,
+     * Sets whether to suppress failures that occurs as a result of post-export analysis, such as
-     * such as SSIM calculation.
+     * SSIM calculation.
     *
     * <p>Regardless of this value, analysis exceptions are attached to the analysis file.
     *
@@ -124,13 +124,13 @@ public class TransformerAndroidTestRunner {
    }
    /**
-     * Sets a {@link Map} of transformer input values, which are propagated to the transformation
+     * Sets a {@link Map} of transformer input values, which are propagated to the export summary
-     * summary JSON file.
+     * JSON file.
     *
     * <p>Values in the map should be convertible according to {@link JSONObject#wrap(Object)} to be
     * recorded properly in the summary file.
     *
-     * @param inputValues A {@link Map} of values to be written to the transformation summary.
+     * @param inputValues A {@link Map} of values to be written to the export summary.
     * @return This {@link Builder}.
     */
    @CanIgnoreReturnValue
@@ -337,7 +337,7 @@ public class TransformerAndroidTestRunner {
          .build();
    }
-    // No exceptions raised, transformation has succeeded.
+    // No exceptions raised, export has succeeded.
    ExportTestResult.Builder testResultBuilder =
        new ExportTestResult.Builder(
                checkNotNull(exportResultReference.get())

--- a/library/transformer/src/androidTest/java/com/google/android/exoplayer2/transformer/mh/HdrEditingTest.java
+++ b/library/transformer/src/androidTest/java/com/google/android/exoplayer2/transformer/mh/HdrEditingTest.java
@@ -69,8 +69,8 @@ public class HdrEditingTest {
          .build();
  @Test
-  public void transform_noRequestedTranscode_hdr10File_transformsOrThrows() throws Exception {
+  public void export_noRequestedTranscode_hdr10File_exportsOrThrows() throws Exception {
-    String testId = "transform_noRequestedTranscode_hdr10File_transformsOrThrows";
+    String testId = "export_noRequestedTranscode_hdr10File_exportsOrThrows";
    Context context = ApplicationProvider.getApplicationContext();
    Transformer transformer = new Transformer.Builder(context).build();
@@ -81,7 +81,7 @@ public class HdrEditingTest {
          new TransformerAndroidTestRunner.Builder(context, transformer)
              .build()
              .run(testId, mediaItem);
-      Log.i(TAG, "Transformed.");
+      Log.i(TAG, "Exported.");
      assertFileHasColorTransfer(exportTestResult.filePath, C.COLOR_TRANSFER_ST2084);
    } catch (ExportException exception) {
      Log.i(TAG, checkNotNull(exception.getCause()).toString());
@@ -94,8 +94,8 @@ public class HdrEditingTest {
  }
  @Test
-  public void transform_noRequestedTranscode_hlg10File_transformsOrThrows() throws Exception {
+  public void export_noRequestedTranscode_hlg10File_exportsOrThrows() throws Exception {
-    String testId = "transform_noRequestedTranscode_hlg10File_transformsOrThrows";
+    String testId = "export_noRequestedTranscode_hlg10File_exportsOrThrows";
    Context context = ApplicationProvider.getApplicationContext();
    Transformer transformer = new Transformer.Builder(context).build();
@@ -106,7 +106,7 @@ public class HdrEditingTest {
          new TransformerAndroidTestRunner.Builder(context, transformer)
              .build()
              .run(testId, mediaItem);
-      Log.i(TAG, "Transformed.");
+      Log.i(TAG, "Exported.");
      assertFileHasColorTransfer(exportTestResult.filePath, C.COLOR_TRANSFER_HLG);
    } catch (ExportException exception) {
      Log.i(TAG, checkNotNull(exception.getCause()).toString());
@@ -119,9 +119,8 @@ public class HdrEditingTest {
  }
  @Test
-  public void transformAndTranscode_hdr10File_whenHdrEditingIsSupported_transforms()
+  public void exportAndTranscode_hdr10File_whenHdrEditingIsSupported_exports() throws Exception {
-      throws Exception {
+    String testId = "exportAndTranscode_hdr10File_whenHdrEditingIsSupported_exports";
-    String testId = "transformAndTranscode_hdr10File_whenHdrEditingIsSupported_transforms";
    Context context = ApplicationProvider.getApplicationContext();
    if (!deviceSupportsHdrEditing(VIDEO_H265, HDR10_DEFAULT_COLOR_INFO)) {
      recordTestSkipped(context, testId, /* reason= */ "Device lacks HDR10 editing support.");
@@ -144,9 +143,8 @@ public class HdrEditingTest {
  }
  @Test
-  public void transformAndTranscode_hlg10File_whenHdrEditingIsSupported_transforms()
+  public void exportAndTranscode_hlg10File_whenHdrEditingIsSupported_exports() throws Exception {
-      throws Exception {
+    String testId = "exportAndTranscode_hlg10File_whenHdrEditingIsSupported_exports";
-    String testId = "transformAndTranscode_hlg10File_whenHdrEditingIsSupported_transforms";
    Context context = ApplicationProvider.getApplicationContext();
    if (!deviceSupportsHdrEditing(VIDEO_H265, HLG10_DEFAULT_COLOR_INFO)) {
      recordTestSkipped(context, testId, /* reason= */ "Device lacks HLG10 editing support.");
@@ -169,9 +167,9 @@ public class HdrEditingTest {
  }
  @Test
-  public void transformAndTranscode_hdr10File_whenHdrEditingUnsupported_toneMapsOrThrows()
+  public void exportAndTranscode_hdr10File_whenHdrEditingUnsupported_toneMapsOrThrows()
      throws Exception {
-    String testId = "transformAndTranscode_hdr10File_whenHdrEditingUnsupported_toneMapsOrThrows";
+    String testId = "exportAndTranscode_hdr10File_whenHdrEditingUnsupported_toneMapsOrThrows";
    Context context = ApplicationProvider.getApplicationContext();
    if (deviceSupportsHdrEditing(VIDEO_H265, HDR10_DEFAULT_COLOR_INFO)) {
      recordTestSkipped(context, testId, /* reason= */ "Device supports HDR10 editing.");
@@ -223,9 +221,9 @@ public class HdrEditingTest {
  }
  @Test
-  public void transformAndTranscode_hlg10File_whenHdrEditingUnsupported_toneMapsOrThrows()
+  public void exportAndTranscode_hlg10File_whenHdrEditingUnsupported_toneMapsOrThrows()
      throws Exception {
-    String testId = "transformAndTranscode_hlg10File_whenHdrEditingUnsupported_toneMapsOrThrows";
+    String testId = "exportAndTranscode_hlg10File_whenHdrEditingUnsupported_toneMapsOrThrows";
    Context context = ApplicationProvider.getApplicationContext();
    if (deviceSupportsHdrEditing(VIDEO_H265, HLG10_DEFAULT_COLOR_INFO)) {
      recordTestSkipped(context, testId, /* reason= */ "Device supports HLG10 editing.");
@@ -277,8 +275,8 @@ public class HdrEditingTest {
  }
  @Test
-  public void transformUnexpectedColorInfo() throws Exception {
+  public void exportUnexpectedColorInfo() throws Exception {
-    String testId = "transformUnexpectedColorInfo";
+    String testId = "exportUnexpectedColorInfo";
    Context context = ApplicationProvider.getApplicationContext();
    if (Util.SDK_INT < 29) {
      recordTestSkipped(

--- a/library/transformer/src/androidTest/java/com/google/android/exoplayer2/transformer/mh/ToneMapHdrToSdrUsingMediaCodecTest.java
+++ b/library/transformer/src/androidTest/java/com/google/android/exoplayer2/transformer/mh/ToneMapHdrToSdrUsingMediaCodecTest.java
@@ -51,8 +51,8 @@ public class ToneMapHdrToSdrUsingMediaCodecTest {
  public static final String TAG = "ToneMapHdrToSdrUsingMediaCodecTest";
  @Test
-  public void transform_toneMapNoRequestedTranscode_hdr10File_toneMapsOrThrows() throws Exception {
+  public void export_toneMapNoRequestedTranscode_hdr10File_toneMapsOrThrows() throws Exception {
-    String testId = "transform_toneMapNoRequestedTranscode_hdr10File_toneMapsOrThrows";
+    String testId = "export_toneMapNoRequestedTranscode_hdr10File_toneMapsOrThrows";
    Context context = ApplicationProvider.getApplicationContext();
    Transformer transformer =
@@ -93,8 +93,8 @@ public class ToneMapHdrToSdrUsingMediaCodecTest {
  }
  @Test
-  public void transform_toneMapNoRequestedTranscode_hlg10File_toneMapsOrThrows() throws Exception {
+  public void export_toneMapNoRequestedTranscode_hlg10File_toneMapsOrThrows() throws Exception {
-    String testId = "transform_toneMapNoRequestedTranscode_hlg10File_toneMapsOrThrows";
+    String testId = "export_toneMapNoRequestedTranscode_hlg10File_toneMapsOrThrows";
    Context context = ApplicationProvider.getApplicationContext();
    Transformer transformer =
@@ -135,8 +135,8 @@ public class ToneMapHdrToSdrUsingMediaCodecTest {
  }
  @Test
-  public void transform_toneMapAndTranscode_hdr10File_toneMapsOrThrows() throws Exception {
+  public void export_toneMapAndTranscode_hdr10File_toneMapsOrThrows() throws Exception {
-    String testId = "transform_toneMapAndTranscode_hdr10File_toneMapsOrThrows";
+    String testId = "export_toneMapAndTranscode_hdr10File_toneMapsOrThrows";
    Context context = ApplicationProvider.getApplicationContext();
    Transformer transformer =
@@ -182,8 +182,8 @@ public class ToneMapHdrToSdrUsingMediaCodecTest {
  }
  @Test
-  public void transform_toneMapAndTranscode_hlg10File_toneMapsOrThrows() throws Exception {
+  public void export_toneMapAndTranscode_hlg10File_toneMapsOrThrows() throws Exception {
-    String testId = "transform_toneMapAndTranscode_hlg10File_toneMapsOrThrows";
+    String testId = "export_toneMapAndTranscode_hlg10File_toneMapsOrThrows";
    Context context = ApplicationProvider.getApplicationContext();
    Transformer transformer =

--- a/library/transformer/src/androidTest/java/com/google/android/exoplayer2/transformer/mh/ToneMapHdrToSdrUsingOpenGlTest.java
+++ b/library/transformer/src/androidTest/java/com/google/android/exoplayer2/transformer/mh/ToneMapHdrToSdrUsingOpenGlTest.java
@@ -50,8 +50,8 @@ public class ToneMapHdrToSdrUsingOpenGlTest {
  public static final String TAG = "ToneMapHdrToSdrUsingOpenGlTest";
  @Test
-  public void transform_toneMap_hlg10File_toneMapsOrThrows() throws Exception {
+  public void export_toneMap_hlg10File_toneMapsOrThrows() throws Exception {
-    String testId = "transform_glToneMap_hlg10File_toneMapsOrThrows";
+    String testId = "export_glToneMap_hlg10File_toneMapsOrThrows";
    if (Util.SDK_INT < 29) {
      recordTestSkipped(
@@ -100,8 +100,8 @@ public class ToneMapHdrToSdrUsingOpenGlTest {
  }
  @Test
-  public void transform_toneMap_hdr10File_toneMapsOrThrows() throws Exception {
+  public void export_toneMap_hdr10File_toneMapsOrThrows() throws Exception {
-    String testId = "transform_glToneMap_hdr10File_toneMapsOrThrows";
+    String testId = "export_glToneMap_hdr10File_toneMapsOrThrows";
    if (Util.SDK_INT < 29) {
      recordTestSkipped(

--- a/library/transformer/src/androidTest/java/com/google/android/exoplayer2/transformer/mh/TranscodeQualityTest.java
+++ b/library/transformer/src/androidTest/java/com/google/android/exoplayer2/transformer/mh/TranscodeQualityTest.java
@@ -39,7 +39,7 @@ import org.junit.runner.RunWith;
 @RunWith(AndroidJUnit4.class)
 public final class TranscodeQualityTest {
  @Test
-  public void transformHighQualityTargetingAvcToAvc1920x1080_ssimIsGreaterThan95Percent()
+  public void exportHighQualityTargetingAvcToAvc1920x1080_ssimIsGreaterThan95Percent()
      throws Exception {
    Context context = ApplicationProvider.getApplicationContext();
    String testId = "transformHighQualityTargetingAvcToAvc1920x1080_ssim";

--- a/library/transformer/src/androidTest/java/com/google/android/exoplayer2/transformer/mh/analysis/SsimMapperTest.java
+++ b/library/transformer/src/androidTest/java/com/google/android/exoplayer2/transformer/mh/analysis/SsimMapperTest.java
@@ -158,7 +158,7 @@ public class SsimMapperTest {
    private static final String TAG = "SsimBinarySearcher";
    private static final double SSIM_ACCEPTABLE_TOLERANCE = 0.005;
    private static final double SSIM_TARGET = 0.95;
-    private static final int MAX_TRANSFORMATIONS = 12;
+    private static final int MAX_EXPORTS = 12;
    private final Context context;
    private final String testIdPrefix;
@@ -166,7 +166,7 @@ public class SsimMapperTest {
    private final Format format;
    private final String outputMimeType;
-    private int transformationsLeft;
+    private int exportsLeft;
    private double ssimLowerBound;
    private double ssimUpperBound;
    private int bitrateLowerBound;
@@ -187,7 +187,7 @@ public class SsimMapperTest {
      this.testIdPrefix = testIdPrefix;
      this.videoUri = videoUri;
      this.outputMimeType = outputMimeType;
-      transformationsLeft = MAX_TRANSFORMATIONS;
+      exportsLeft = MAX_EXPORTS;
      format = AndroidTestUtil.getFormatForTestFile(videoUri);
    }
@@ -208,7 +208,7 @@ public class SsimMapperTest {
      int maxBitrateToCheck = currentBitrate * 32;
      do {
-        double currentSsim = transformAndGetSsim(currentBitrate);
+        double currentSsim = exportAndGetSsim(currentBitrate);
        if (isSsimAcceptable(currentSsim)) {
          return false;
        }
@@ -228,10 +228,9 @@ public class SsimMapperTest {
            return false;
          }
        }
-      } while ((ssimLowerBound == SSIM_UNSET || ssimUpperBound == SSIM_UNSET)
+      } while ((ssimLowerBound == SSIM_UNSET || ssimUpperBound == SSIM_UNSET) && exportsLeft > 0);
-          && transformationsLeft > 0);
-      return transformationsLeft > 0;
+      return exportsLeft > 0;
    }
    /**
@@ -240,19 +239,19 @@ public class SsimMapperTest {
     * <p>Performs a binary search of the bitrate between the {@link #bitrateLowerBound} and {@link
     * #bitrateUpperBound}.
     *
-     * <p>Runs until the target SSIM is found or the maximum number of transformations is reached.
+     * <p>Runs until the target SSIM is found or the maximum number of exports is reached.
     */
    public void search() throws Exception {
      if (!setupBinarySearchBounds()) {
        return;
      }
-      while (transformationsLeft > 0) {
+      while (exportsLeft > 0) {
        // At this point, we have under and over bitrate bounds, with associated SSIMs.
        // Go between the two, and replace either the under or the over.
        int currentBitrate = (bitrateUpperBound + bitrateLowerBound) / 2;
-        double currentSsim = transformAndGetSsim(currentBitrate);
+        double currentSsim = exportAndGetSsim(currentBitrate);
        if (isSsimAcceptable(currentSsim)) {
          return;
        }
@@ -272,7 +271,7 @@ public class SsimMapperTest {
      }
    }
-    private double transformAndGetSsim(int bitrate) throws Exception {
+    private double exportAndGetSsim(int bitrate) throws Exception {
      // TODO(b/238094555): Force specific encoders to be used.
      String fileName = checkNotNull(getLast(FORWARD_SLASH_SPLITTER.split(videoUri)));
@@ -305,7 +304,7 @@ public class SsimMapperTest {
              .setRemoveAudio(true)
              .build();
-      transformationsLeft--;
+      exportsLeft--;
      double ssim =
          new TransformerAndroidTestRunner.Builder(context, transformer)

--- a/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/ExoAssetLoaderBaseRenderer.java
+++ b/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/ExoAssetLoaderBaseRenderer.java
@@ -47,7 +47,7 @@ import org.checkerframework.checker.nullness.qual.RequiresNonNull;
  private final AssetLoader.Listener assetLoaderListener;
  private final DecoderInputBuffer decoderInputBuffer;
-  private boolean isTransformationRunning;
+  private boolean isRunning;
  private long streamStartPositionUs;
  public ExoAssetLoaderBaseRenderer(
@@ -92,7 +92,7 @@ import org.checkerframework.checker.nullness.qual.RequiresNonNull;
  @Override
  public void render(long positionUs, long elapsedRealtimeUs) {
    try {
-      if (!isTransformationRunning || isEnded() || !ensureConfigured()) {
+      if (!isRunning || isEnded() || !ensureConfigured()) {
        return;
      }
@@ -102,7 +102,7 @@ import org.checkerframework.checker.nullness.qual.RequiresNonNull;
        while (feedConsumerFromInput()) {}
      }
    } catch (ExportException e) {
-      isTransformationRunning = false;
+      isRunning = false;
      assetLoaderListener.onError(e);
    }
  }
@@ -120,12 +120,12 @@ import org.checkerframework.checker.nullness.qual.RequiresNonNull;
  @Override
  protected void onStarted() {
-    isTransformationRunning = true;
+    isRunning = true;
  }
  @Override
  protected void onStopped() {
-    isTransformationRunning = false;
+    isRunning = false;
  }
  @Override

--- a/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/ExoPlayerAssetLoader.java
+++ b/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/ExoPlayerAssetLoader.java
@@ -142,7 +142,7 @@ public final class ExoPlayerAssetLoader implements AssetLoader {
            .setForceHighestSupportedBitrate(true)
            .build());
    // Arbitrarily decrease buffers for playback so that samples start being sent earlier to the
-    // pipelines (rebuffers are less problematic for the transformation use case).
+    // pipelines (rebuffers are less problematic for the export use case).
    DefaultLoadControl loadControl =
        new DefaultLoadControl.Builder()
            .setBufferDurationsMs(
@@ -280,7 +280,7 @@ public final class ExoPlayerAssetLoader implements AssetLoader {
      if (!window.isPlaceholder) {
        long durationUs = window.durationUs;
        // Make progress permanently unavailable if the duration is unknown, so that it doesn't jump
-        // to a high value at the end of the transformation if the duration is set once the media is
+        // to a high value at the end of the export if the duration is set once the media is
        // entirely loaded.
        progressState =
            durationUs <= 0 || durationUs == C.TIME_UNSET

--- a/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/FallbackListener.java
+++ b/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/FallbackListener.java
@@ -41,7 +41,7 @@ import com.google.android.exoplayer2.util.Util;
  /**
   * Creates a new instance.
   *
-   * @param composition The {@link Composition} to transform.
+   * @param composition The {@link Composition} to export.
   * @param transformerListeners The {@linkplain Transformer.Listener listeners} to call {@link
   *     Transformer.Listener#onFallbackApplied} on.
   * @param transformerListenerHandler The {@link HandlerWrapper} to call {@link

--- a/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/FrameworkMuxer.java
+++ b/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/FrameworkMuxer.java
@@ -204,7 +204,7 @@ import java.nio.ByteBuffer;
    try {
      stopMuxer(mediaMuxer);
    } catch (RuntimeException e) {
-      // It doesn't matter that stopping the muxer throws if the transformation is being cancelled.
+      // It doesn't matter that stopping the muxer throws if the export is being cancelled.
      if (!forCancellation) {
        throw new MuxerException("Failed to stop the muxer", e);
      }

--- a/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/Muxer.java
+++ b/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/Muxer.java
@@ -91,7 +91,7 @@ public interface Muxer {
   *
   * <p>The muxer cannot be used anymore once this method has been called.
   *
-   * @param forCancellation Whether the reason for releasing the resources is the transformation
+   * @param forCancellation Whether the reason for releasing the resources is the export
   *     cancellation.
   * @throws MuxerException If the muxer fails to finish writing the output and {@code
   *     forCancellation} is false.
@@ -105,8 +105,8 @@ public interface Muxer {
   * <p>This is the maximum delay between samples of any track. They can be of the same or of
   * different track types.
   *
-   * <p>This value is used to abort the transformation when the maximum delay is reached. Note that
+   * <p>This value is used to abort the export when the maximum delay is reached. Note that there is
-   * there is no guarantee that the transformation will be aborted exactly at that time.
+   * no guarantee that the export will be aborted exactly at that time.
   */
  long getMaxDelayBetweenSamplesMs();
 }
--- a/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/TransformerInternal.java
+++ b/library/transformer/src/main/java/com/google/android/exoplayer2/transformer/TransformerInternal.java
@@ -61,19 +61,19 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
  }
  /**
-   * Represents a reason for ending a transformation. May be one of {@link #END_REASON_COMPLETED},
+   * Represents a reason for ending an export. May be one of {@link #END_REASON_COMPLETED}, {@link
-   * {@link #END_REASON_CANCELLED} or {@link #END_REASON_ERROR}.
+   * #END_REASON_CANCELLED} or {@link #END_REASON_ERROR}.
   */
  @Documented
  @Retention(RetentionPolicy.SOURCE)
  @Target(TYPE_USE)
  @IntDef({END_REASON_COMPLETED, END_REASON_CANCELLED, END_REASON_ERROR})
  private @interface EndReason {}
-  /** The transformation completed successfully. */
+  /** The export completed successfully. */
  private static final int END_REASON_COMPLETED = 0;
-  /** The transformation was cancelled. */
+  /** The export was cancelled. */
  private static final int END_REASON_CANCELLED = 1;
-  /** An error occurred during the transformation. */
+  /** An error occurred during the export. */
  private static final int END_REASON_ERROR = 2;
  // Internal messages.

--- a/library/transformer/src/test/java/com/google/android/exoplayer2/transformer/TransformerEndToEndTest.java
+++ b/library/transformer/src/test/java/com/google/android/exoplayer2/transformer/TransformerEndToEndTest.java
@@ -131,7 +131,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_videoOnlyPassthrough_completesSuccessfully() throws Exception {
+  public void start_videoOnlyPassthrough_completesSuccessfully() throws Exception {
    Transformer transformer = createTransformerBuilder(/* enableFallback= */ false).build();
    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_VIDEO_ONLY);
@@ -142,7 +142,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_audioOnlyPassthrough_completesSuccessfully() throws Exception {
+  public void start_audioOnlyPassthrough_completesSuccessfully() throws Exception {
    Transformer transformer = createTransformerBuilder(/* enableFallback= */ false).build();
    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_UNSUPPORTED_BY_ENCODER);
@@ -154,7 +154,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_audioOnlyTranscoding_completesSuccessfully() throws Exception {
+  public void start_audioOnlyTranscoding_completesSuccessfully() throws Exception {
    Transformer transformer =
        createTransformerBuilder(/* enableFallback= */ false)
            .setTransformationRequest(
@@ -172,7 +172,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_audioAndVideo_completesSuccessfully() throws Exception {
+  public void start_audioAndVideo_completesSuccessfully() throws Exception {
    Transformer transformer = createTransformerBuilder(/* enableFallback= */ false).build();
    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_VIDEO);
@@ -183,7 +183,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_audioAndVideo_withClippingStartAtKeyFrame_completesSuccessfully()
+  public void start_audioAndVideo_withClippingStartAtKeyFrame_completesSuccessfully()
      throws Exception {
    Transformer transformer = createTransformerBuilder(/* enableFallback= */ false).build();
    MediaItem mediaItem =
@@ -207,7 +207,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_withSubtitles_completesSuccessfully() throws Exception {
+  public void start_withSubtitles_completesSuccessfully() throws Exception {
    Transformer transformer =
        createTransformerBuilder(/* enableFallback= */ false)
            .setTransformationRequest(
@@ -222,8 +222,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_successiveTransformations_completesSuccessfully()
+  public void start_successiveExports_completesSuccessfully() throws Exception {
-      throws Exception {
    Transformer transformer = createTransformerBuilder(/* enableFallback= */ false).build();
    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_VIDEO);
@@ -240,7 +239,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_concurrentTransformations_throwsError() {
+  public void start_concurrentExports_throwsError() {
    Transformer transformer = createTransformerBuilder(/* enableFallback= */ false).build();
    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_VIDEO_ONLY);
@@ -250,7 +249,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_removeAudio_completesSuccessfully() throws Exception {
+  public void start_removeAudio_completesSuccessfully() throws Exception {
    Transformer transformer = createTransformerBuilder(/* enableFallback= */ false).build();
    EditedMediaItem editedMediaItem =
        new EditedMediaItem.Builder(MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_VIDEO))
@@ -265,7 +264,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_removeVideo_completesSuccessfully() throws Exception {
+  public void start_removeVideo_completesSuccessfully() throws Exception {
    Transformer transformer = createTransformerBuilder(/* enableFallback= */ false).build();
    EditedMediaItem editedMediaItem =
        new EditedMediaItem.Builder(MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_VIDEO))
@@ -280,7 +279,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_silentAudioOnAudioOnly_isIgnored() throws Exception {
+  public void start_silentAudioOnAudioOnly_isIgnored() throws Exception {
    Transformer transformer =
        createTransformerBuilder(/* enableFallback= */ false)
            .experimentalSetGenerateSilentAudio(true)
@@ -295,7 +294,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_silentAudioOnAudioVideo_isIgnored() throws Exception {
+  public void start_silentAudioOnAudioVideo_isIgnored() throws Exception {
    Transformer transformer =
        createTransformerBuilder(/* enableFallback= */ false)
            .experimentalSetGenerateSilentAudio(true)
@@ -309,7 +308,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_silentAudioRemoveAudio_completesSuccessfully() throws Exception {
+  public void start_silentAudioRemoveAudio_completesSuccessfully() throws Exception {
    Transformer transformer =
        createTransformerBuilder(/* enableFallback= */ false)
            .experimentalSetGenerateSilentAudio(true)
@@ -327,7 +326,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_silentAudioRemoveVideo_isIgnored() throws Exception {
+  public void start_silentAudioRemoveVideo_isIgnored() throws Exception {
    Transformer transformer =
        createTransformerBuilder(/* enableFallback= */ false)
            .experimentalSetGenerateSilentAudio(true)
@@ -344,7 +343,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_silentAudioOnVideoOnly_completesSuccessfully() throws Exception {
+  public void start_silentAudioOnVideoOnly_completesSuccessfully() throws Exception {
    Transformer transformer =
        createTransformerBuilder(/* enableFallback= */ false)
            .experimentalSetGenerateSilentAudio(true)
@@ -359,7 +358,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_adjustSampleRate_completesSuccessfully() throws Exception {
+  public void start_adjustSampleRate_completesSuccessfully() throws Exception {
    SonicAudioProcessor sonicAudioProcessor = new SonicAudioProcessor();
    sonicAudioProcessor.setOutputSampleRateHz(48000);
    Transformer transformer = createTransformerBuilder(/* enableFallback= */ false).build();
@@ -377,8 +376,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_concatenateMediaItemsWithSameFormat_completesSuccessfully()
+  public void start_concatenateMediaItemsWithSameFormat_completesSuccessfully() throws Exception {
-      throws Exception {
    Transformer transformer =
        createTransformerBuilder(/* enableFallback= */ false).setTransmux(true).build();
    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_VIDEO);
@@ -397,8 +395,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void
+  public void start_concatenateMediaItemsWithSameFormatAndEffects_completesSuccessfully()
-      startTransformation_concatenateMediaItemsWithSameFormatAndEffects_completesSuccessfully()
      throws Exception {
    Transformer transformer = createTransformerBuilder(/* enableFallback= */ false).build();
    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_VIDEO);
@@ -425,7 +422,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_singleMediaItemAndTransmux_ignoresTransmux() throws Exception {
+  public void start_singleMediaItemAndTransmux_ignoresTransmux() throws Exception {
    SonicAudioProcessor sonicAudioProcessor = new SonicAudioProcessor();
    sonicAudioProcessor.setOutputSampleRateHz(48000);
    Transformer transformer =
@@ -444,8 +441,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_multipleMediaItemsWithEffectsAndTransmux_ignoresTransmux()
+  public void start_multipleMediaItemsWithEffectsAndTransmux_ignoresTransmux() throws Exception {
-      throws Exception {
    Transformer transformer =
        createTransformerBuilder(/* enableFallback= */ false).setTransmux(true).build();
    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_VIDEO);
@@ -470,7 +466,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_withMultipleListeners_callsEachOnCompletion() throws Exception {
+  public void start_withMultipleListeners_callsEachOnCompletion() throws Exception {
    Transformer.Listener mockListener1 = mock(Transformer.Listener.class);
    Transformer.Listener mockListener2 = mock(Transformer.Listener.class);
    Transformer.Listener mockListener3 = mock(Transformer.Listener.class);
@@ -492,7 +488,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_withMultipleListeners_callsEachOnError() {
+  public void start_withMultipleListeners_callsEachOnError() {
    Transformer.Listener mockListener1 = mock(Transformer.Listener.class);
    Transformer.Listener mockListener2 = mock(Transformer.Listener.class);
    Transformer.Listener mockListener3 = mock(Transformer.Listener.class);
@@ -517,7 +513,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_withMultipleListeners_callsEachOnFallback() throws Exception {
+  public void start_withMultipleListeners_callsEachOnFallback() throws Exception {
    Transformer.Listener mockListener1 = mock(Transformer.Listener.class);
    Transformer.Listener mockListener2 = mock(Transformer.Listener.class);
    Transformer.Listener mockListener3 = mock(Transformer.Listener.class);
@@ -551,7 +547,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_success_callsDeprecatedCompletionCallbacks() throws Exception {
+  public void start_success_callsDeprecatedCompletionCallbacks() throws Exception {
    AtomicBoolean deprecatedFallbackCalled1 = new AtomicBoolean();
    AtomicBoolean deprecatedFallbackCalled2 = new AtomicBoolean();
    Transformer transformer =
@@ -582,7 +578,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_withError_callsDeprecatedErrorCallbacks() throws Exception {
+  public void start_withError_callsDeprecatedErrorCallbacks() throws Exception {
    AtomicBoolean deprecatedFallbackCalled1 = new AtomicBoolean();
    AtomicBoolean deprecatedFallbackCalled2 = new AtomicBoolean();
    AtomicBoolean deprecatedFallbackCalled3 = new AtomicBoolean();
@@ -629,7 +625,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_withFallback_callsDeprecatedFallbackCallbacks() throws Exception {
+  public void start_withFallback_callsDeprecatedFallbackCallbacks() throws Exception {
    AtomicBoolean deprecatedFallbackCalled = new AtomicBoolean();
    Transformer transformer =
        createTransformerBuilder(/* enableFallback= */ true)
@@ -653,7 +649,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_afterBuildUponWithListenerRemoved_onlyCallsRemainingListeners()
+  public void start_afterBuildUponWithListenerRemoved_onlyCallsRemainingListeners()
      throws Exception {
    Transformer.Listener mockListener1 = mock(Transformer.Listener.class);
    Transformer.Listener mockListener2 = mock(Transformer.Listener.class);
@@ -676,7 +672,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_flattenForSlowMotion_completesSuccessfully() throws Exception {
+  public void start_flattenForSlowMotion_completesSuccessfully() throws Exception {
    Transformer transformer = createTransformerBuilder(/* enableFallback= */ false).build();
    EditedMediaItem editedMediaItem =
        new EditedMediaItem.Builder(MediaItem.fromUri(ASSET_URI_PREFIX + FILE_WITH_SEF_SLOW_MOTION))
@@ -690,7 +686,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_completesWithValidBitrate() throws Exception {
+  public void start_completesWithValidBitrate() throws Exception {
    Transformer transformer = createTransformerBuilder(/* enableFallback= */ false).build();
    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_VIDEO);
@@ -702,7 +698,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_withAudioEncoderFormatUnsupported_completesWithError() {
+  public void start_withAudioEncoderFormatUnsupported_completesWithError() {
    Transformer transformer =
        createTransformerBuilder(/* enableFallback= */ false)
            .setTransformationRequest(
@@ -722,7 +718,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_withAudioDecoderFormatUnsupported_completesWithError() {
+  public void start_withAudioDecoderFormatUnsupported_completesWithError() {
    Transformer transformer =
        createTransformerBuilder(/* enableFallback= */ false)
            .setTransformationRequest(
@@ -741,7 +737,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_withIoError_completesWithError() {
+  public void start_withIoError_completesWithError() {
    Transformer transformer = createTransformerBuilder(/* enableFallback= */ false).build();
    MediaItem mediaItem = MediaItem.fromUri("asset:///non-existing-path.mp4");
@@ -753,8 +749,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_withAudioMuxerFormatUnsupported_completesSuccessfully()
+  public void start_withAudioMuxerFormatUnsupported_completesSuccessfully() throws Exception {
-      throws Exception {
    // Test succeeds because MIME type fallback is mandatory.
    Transformer.Listener mockListener = mock(Transformer.Listener.class);
    TransformationRequest originalTransformationRequest =
@@ -778,8 +773,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_withAudioMuxerFormatFallback_completesSuccessfully()
+  public void start_withAudioMuxerFormatFallback_completesSuccessfully() throws Exception {
-      throws Exception {
    Transformer.Listener mockListener = mock(Transformer.Listener.class);
    TransformationRequest originalTransformationRequest =
        new TransformationRequest.Builder().build();
@@ -802,7 +796,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_withSlowOutputSampleRate_completesWithError() {
+  public void start_withSlowOutputSampleRate_completesWithError() {
    MediaSource.Factory mediaSourceFactory =
        new DefaultMediaSourceFactory(
            context, new SlowExtractorsFactory(/* delayBetweenReadsMs= */ 10));
@@ -825,8 +819,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_withUnsetMaxDelayBetweenSamples_completesSuccessfully()
+  public void start_withUnsetMaxDelayBetweenSamples_completesSuccessfully() throws Exception {
-      throws Exception {
    Muxer.Factory muxerFactory = new TestMuxerFactory(/* maxDelayBetweenSamplesMs= */ C.TIME_UNSET);
    Transformer transformer =
        createTransformerBuilder(/* enableFallback= */ false).setMuxerFactory(muxerFactory).build();
@@ -839,7 +832,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_afterCancellation_completesSuccessfully() throws Exception {
+  public void start_afterCancellation_completesSuccessfully() throws Exception {
    Transformer transformer = createTransformerBuilder(/* enableFallback= */ false).build();
    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_VIDEO);
@@ -847,16 +840,16 @@ public final class TransformerEndToEndTest {
    transformer.cancel();
    Files.delete(Paths.get(outputPath));
-    // This would throw if the previous transformation had not been cancelled.
+    // This would throw if the previous export had not been cancelled.
    transformer.start(mediaItem, outputPath);
    ExportResult exportResult = TransformerTestRunner.runLooper(transformer);
-    // TODO(b/264974805): Make transformation output deterministic and check it against dump file.
+    // TODO(b/264974805): Make export output deterministic and check it against dump file.
    assertThat(exportResult.exportException).isNull();
  }
  @Test
-  public void startTransformation_fromSpecifiedThread_completesSuccessfully() throws Exception {
+  public void start_fromSpecifiedThread_completesSuccessfully() throws Exception {
    HandlerThread anotherThread = new HandlerThread("AnotherThread");
    anotherThread.start();
    Looper looper = anotherThread.getLooper();
@@ -885,7 +878,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_fromWrongThread_throwsError() throws Exception {
+  public void start_fromWrongThread_throwsError() throws Exception {
    Transformer transformer = createTransformerBuilder(/* enableFallback= */ false).build();
    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_AUDIO_VIDEO);
    HandlerThread anotherThread = new HandlerThread("AnotherThread");
@@ -910,8 +903,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_withAssetLoaderAlwaysDecoding_pipelineExpectsDecoded()
+  public void start_withAssetLoaderAlwaysDecoding_pipelineExpectsDecoded() throws Exception {
-      throws Exception {
    AtomicReference<SampleConsumer> sampleConsumerRef = new AtomicReference<>();
    Transformer transformer =
        createTransformerBuilder(/* enableFallback= */ false)
@@ -927,7 +919,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_withAssetLoaderNotDecodingAndDecodingNeeded_completesWithError() {
+  public void start_withAssetLoaderNotDecodingAndDecodingNeeded_completesWithError() {
    Transformer transformer =
        createTransformerBuilder(/* enableFallback= */ false)
            .setAssetLoaderFactory(
@@ -948,7 +940,7 @@ public final class TransformerEndToEndTest {
  }
  @Test
-  public void startTransformation_withNoOpEffects_transmuxes() throws Exception {
+  public void start_withNoOpEffects_transmuxes() throws Exception {
    Transformer transformer = createTransformerBuilder(/* enableFallback= */ false).build();
    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_VIDEO_ONLY);
    int mediaItemHeightPixels = 720;
@@ -1041,15 +1033,14 @@ public final class TransformerEndToEndTest {
    assertThat(progresses).isInOrder();
    if (!progresses.isEmpty()) {
-      // The progress list could be empty if the transformation ends before any progress can be
+      // The progress list could be empty if the export ends before any progress can be retrieved.
-      // retrieved.
      assertThat(progresses.get(0)).isAtLeast(0);
      assertThat(Iterables.getLast(progresses)).isLessThan(100);
    }
  }
  @Test
-  public void getProgress_noCurrentTransformation_returnsNoTransformation() throws Exception {
+  public void getProgress_noCurrentExport_returnsNotStarted() throws Exception {
    Transformer transformer = createTransformerBuilder(/* enableFallback= */ false).build();
    MediaItem mediaItem = MediaItem.fromUri(ASSET_URI_PREFIX + FILE_VIDEO_ONLY);

--- a/library/transformer/src/test/java/com/google/android/exoplayer2/transformer/TransformerTestRunner.java
+++ b/library/transformer/src/test/java/com/google/android/exoplayer2/transformer/TransformerTestRunner.java
@@ -36,7 +36,7 @@ public final class TransformerTestRunner {
   *
   * @param transformer The {@link Transformer}.
   * @return The {@link ExportResult}.
-   * @throws ExportException If the transformation threw an exception.
+   * @throws ExportException If the export threw an exception.
   * @throws TimeoutException If the {@link RobolectricUtil#DEFAULT_TIMEOUT_MS default timeout} is
   *     exceeded.
   * @throws IllegalStateException If the method is not called from the main thread.