Revise TransformationRequest MIME type validation.

PiperOrigin-RevId: 422333929

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

@@ -16,6 +16,8 @@
 
 package androidx.media3.transformer;
 
+import static androidx.media3.common.util.Assertions.checkArgument;
+
 import android.graphics.Matrix;
 import androidx.annotation.Nullable;
 import androidx.media3.common.C;
@@ -130,16 +132,17 @@ public Builder setFlattenForSlowMotion(boolean flattenForSlowMotion) {
      *
      * @param outputHeight The output height in pixels.
      * @return This builder.
+     * @throws IllegalArgumentException If the {@code outputHeight} is not supported.
      */
     public Builder setResolution(int outputHeight) {
       // TODO(b/209781577): Define outputHeight in the javadoc as height can be ambiguous for videos
       // where rotationDegrees is set in the Format.
       // TODO(b/201293185): Restructure to input a Presentation class.
       // TODO(b/201293185): Check encoder codec capabilities in order to allow arbitrary
       // resolutions and reasonable fallbacks.
-      if (outputHeight != C.LENGTH_UNSET && !SUPPORTED_OUTPUT_HEIGHTS.contains(outputHeight)) {
-        throw new IllegalArgumentException("Unsupported outputHeight: " + outputHeight);
-      }
+      checkArgument(
+          outputHeight == C.LENGTH_UNSET || SUPPORTED_OUTPUT_HEIGHTS.contains(outputHeight),
+          "Unsupported outputHeight: " + outputHeight);
       this.outputHeight = outputHeight;
       return this;
     }
@@ -157,10 +160,13 @@ public Builder setResolution(int outputHeight) {
      *
      * @param videoMimeType The MIME type of the video samples in the output.
      * @return This builder.
+     * @throws IllegalArgumentException If the {@code videoMimeType} is non-null but not a video
+     *     {@link MimeTypes MIME type}.
      */
     public Builder setVideoMimeType(@Nullable String videoMimeType) {
-      // TODO(b/209469847): Validate videoMimeType here once deprecated
-      // Transformer.Builder#setOuputMimeType(String) has been removed.
+      checkArgument(
+          videoMimeType == null || MimeTypes.isVideo(videoMimeType),
+          "Not a video MIME type: " + videoMimeType);
       this.videoMimeType = videoMimeType;
       return this;
     }
@@ -177,10 +183,13 @@ public Builder setVideoMimeType(@Nullable String videoMimeType) {
      *
      * @param audioMimeType The MIME type of the audio samples in the output.
      * @return This builder.
+     * @throws IllegalArgumentException If the {@code audioMimeType} is non-null but not an audio
+     *     {@link MimeTypes MIME type}.
      */
     public Builder setAudioMimeType(@Nullable String audioMimeType) {
-      // TODO(b/209469847): Validate audioMimeType here once deprecated
-      // Transformer.Builder#setOuputMimeType(String) has been removed.
+      checkArgument(
+          audioMimeType == null || MimeTypes.isAudio(audioMimeType),
+          "Not an audio MIME type: " + audioMimeType);
       this.audioMimeType = audioMimeType;
       return this;
     }

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

@@ -0,0 +1,43 @@
+/*
+ * Copyright 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package androidx.media3.transformer;
+
+import static org.junit.Assert.assertThrows;
+
+import androidx.media3.common.MimeTypes;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+/** Unit test for {@link TransformationRequest.Builder}. */
+@RunWith(AndroidJUnit4.class)
+public class TransformationRequestBuilderTest {
+
+  @Test
+  public void setAudioMimeType_withVideoMimeType_throws() {
+    assertThrows(
+        IllegalArgumentException.class,
+        () -> new TransformationRequest.Builder().setAudioMimeType(MimeTypes.VIDEO_H264));
+  }
+
+  @Test
+  public void setVideoMimeType_withAudioMimeType_throws() {
+    assertThrows(
+        IllegalArgumentException.class,
+        () -> new TransformationRequest.Builder().setVideoMimeType(MimeTypes.AUDIO_AAC));
+  }
+}

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

@@ -52,8 +52,6 @@ public void build_removeAudioAndVideo_throws() {
         () -> new Transformer.Builder(context).setRemoveAudio(true).setRemoveVideo(true).build());
   }
 
-  // TODO(b/209469847): Move this test to TransformationRequestBuilderTest once deprecated
-  // Transformer.Builder#setOuputMimeType(String) has been removed.
   @Test
   public void build_withUnsupportedAudioMimeType_throws() {
     Context context = ApplicationProvider.getApplicationContext();
@@ -68,8 +66,6 @@ public void build_withUnsupportedAudioMimeType_throws() {
                 .build());
   }
 
-  // TODO(b/209469847): Move this test to TransformationRequestBuilderTest once deprecated
-  // Transformer.Builder#setOuputMimeType(String) has been removed.
   @Test
   public void build_withUnsupportedVideoMimeType_throws() {
     Context context = ApplicationProvider.getApplicationContext();