Force video encoding if VideoEncoderSettings are not default.

Add a MH test exercising this behaviour.

PiperOrigin-RevId: 436177198

libraries/transformer/src/androidTest/java/androidx/media3/transformer/mh/TransformationTest.java

@@ -25,10 +25,13 @@ import androidx.media3.common.Format;
 import androidx.media3.common.util.Log;
 import androidx.media3.common.util.Util;
 import androidx.media3.transformer.Codec;
+import androidx.media3.transformer.DefaultEncoderFactory;
+import androidx.media3.transformer.EncoderSelector;
 import androidx.media3.transformer.TransformationException;
 import androidx.media3.transformer.TransformationRequest;
 import androidx.media3.transformer.Transformer;
 import androidx.media3.transformer.TransformerAndroidTestRunner;
+import androidx.media3.transformer.VideoEncoderSettings;
 import androidx.test.core.app.ApplicationProvider;
 import androidx.test.ext.junit.runners.AndroidJUnit4;
 import java.util.List;
@@ -97,6 +100,27 @@ public class TransformationTest {
         .run(testId, MP4_ASSET_WITH_INCREASING_TIMESTAMPS_URI_STRING);
   }
 
+  @Test
+  public void transformToSpecificBitrate() throws Exception {
+    final String testId = TAG + "_transformWithSpecificBitrate";
+    Context context = ApplicationProvider.getApplicationContext();
+    Transformer transformer =
+        new Transformer.Builder(context)
+            .setRemoveAudio(true)
+            .setEncoderFactory(
+                new DefaultEncoderFactory(
+                    EncoderSelector.DEFAULT,
+                    new VideoEncoderSettings.Builder().setBitrate(5_000_000).build(),
+                    /* enableFallback= */ true))
+            .build();
+    // TODO(b/223381524): Remove analysis failure suppression after ssim calculation doesn't fail.
+    new TransformerAndroidTestRunner.Builder(context, transformer)
+        .setCalculateSsim(true)
+        .setSuppressAnalysisExceptions(true)
+        .build()
+        .run(testId, MP4_ASSET_WITH_INCREASING_TIMESTAMPS_URI_STRING);
+  }
+
   @Test
   public void transform4K60() throws Exception {
     final String testId = TAG + "_transform4K60";

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

@@ -59,7 +59,7 @@ public final class DefaultEncoderFactory implements Codec.EncoderFactory {
 
   /** Creates a new instance using a default {@link VideoEncoderSettings}. */
   public DefaultEncoderFactory(EncoderSelector videoEncoderSelector, boolean enableFallback) {
-    this(videoEncoderSelector, new VideoEncoderSettings.Builder().build(), enableFallback);
+    this(videoEncoderSelector, VideoEncoderSettings.DEFAULT, enableFallback);
   }
 
   /**
@@ -193,6 +193,11 @@ public final class DefaultEncoderFactory implements Codec.EncoderFactory {
         /* outputSurface= */ null);
   }
 
+  @Override
+  public boolean videoNeedsEncoding() {
+    return !requestedVideoEncoderSettings.equals(VideoEncoderSettings.DEFAULT);
+  }
+
   /**
    * Finds an {@link MediaCodecInfo encoder} that supports the requested format most closely.
    *

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

@@ -19,8 +19,10 @@ package androidx.media3.transformer;
 import static androidx.media3.common.util.Assertions.checkArgument;
 import static java.lang.annotation.ElementType.TYPE_USE;
 
+import android.annotation.SuppressLint;
 import android.media.MediaCodecInfo;
 import androidx.annotation.IntDef;
+import androidx.annotation.Nullable;
 import androidx.media3.common.Format;
 import androidx.media3.common.util.UnstableApi;
 import java.lang.annotation.Documented;
@@ -40,6 +42,9 @@ public final class VideoEncoderSettings {
   /** The default I-frame interval in seconds. */
   public static final float DEFAULT_I_FRAME_INTERVAL_SECONDS = 1.0f;
 
+  /** A default {@link VideoEncoderSettings}. */
+  public static final VideoEncoderSettings DEFAULT = new Builder().build();
+
   /**
    * The allowed values for {@code bitrateMode}, one of
    *
@@ -51,6 +56,7 @@ public final class VideoEncoderSettings {
    *       MediaCodecInfo.EncoderCapabilities#BITRATE_MODE_CBR_FD}, available from API31.
    * </ul>
    */
+  @SuppressLint("InlinedApi")
   @Documented
   @Retention(RetentionPolicy.SOURCE)
   @Target(TYPE_USE)
@@ -207,4 +213,33 @@ public final class VideoEncoderSettings {
   public Builder buildUpon() {
     return new Builder(this);
   }
+
+  @Override
+  public boolean equals(@Nullable Object o) {
+    if (this == o) {
+      return true;
+    }
+    if (!(o instanceof VideoEncoderSettings)) {
+      return false;
+    }
+    VideoEncoderSettings that = (VideoEncoderSettings) o;
+    return bitrate == that.bitrate
+        && bitrateMode == that.bitrateMode
+        && profile == that.profile
+        && level == that.level
+        && colorProfile == that.colorProfile
+        && iFrameIntervalSeconds == that.iFrameIntervalSeconds;
+  }
+
+  @Override
+  public int hashCode() {
+    int result = 7;
+    result = 31 * result + bitrate;
+    result = 31 * result + bitrateMode;
+    result = 31 * result + profile;
+    result = 31 * result + level;
+    result = 31 * result + colorProfile;
+    result = 31 * result + Float.floatToIntBits(iFrameIntervalSeconds);
+    return result;
+  }
 }