Toggle video effects in the composition demo.

Add an option to enable or disable video effects in preview or export.

PiperOrigin-RevId: 662488658

demos/composition/src/main/java/androidx/media3/demo/composition/CompositionPreviewActivity.java

@@ -79,6 +79,7 @@ public final class CompositionPreviewActivity extends AppCompatActivity {
   private AppCompatTextView exportInformationTextView;
   private Stopwatch exportStopwatch;
   private boolean includeBackgroundAudioTrack;
+  private boolean appliesVideoEffects;
 
   @Override
   protected void onCreate(@Nullable Bundle savedInstanceState) {
@@ -102,6 +103,10 @@ public final class CompositionPreviewActivity extends AppCompatActivity {
     backgroundAudioCheckBox.setOnCheckedChangeListener(
         (compoundButton, checked) -> includeBackgroundAudioTrack = checked);
 
+    AppCompatCheckBox applyVideoEffectsCheckBox = findViewById(R.id.apply_video_effects_checkbox);
+    applyVideoEffectsCheckBox.setOnCheckedChangeListener(
+        ((compoundButton, checked) -> appliesVideoEffects = checked));
+
     presetDescriptions = getResources().getStringArray(R.array.preset_descriptions);
     // Select two media items by default.
     selectedMediaItems = new boolean[presetDescriptions.length];
@@ -145,9 +150,12 @@ public final class CompositionPreviewActivity extends AppCompatActivity {
     String[] presetUris = getResources().getStringArray(/* id= */ R.array.preset_uris);
     int[] presetDurationsUs = getResources().getIntArray(/* id= */ R.array.preset_durations);
     List<EditedMediaItem> mediaItems = new ArrayList<>();
-    ImmutableList<Effect> effects =
+    ImmutableList<Effect> videoEffects =
-        ImmutableList.of(
+        appliesVideoEffects
-            MatrixTransformationFactory.createDizzyCropEffect(), RgbFilter.createGrayscaleFilter());
+            ? ImmutableList.of(
+                MatrixTransformationFactory.createDizzyCropEffect(),
+                RgbFilter.createGrayscaleFilter())
+            : ImmutableList.of();
     // Preview requires all sequences to be the same duration, so calculate main sequence duration
     // and limit background sequence duration to match.
     long videoSequenceDurationUs = 0;
@@ -165,7 +173,7 @@ public final class CompositionPreviewActivity extends AppCompatActivity {
                 .setEffects(
                     new Effects(
                         /* audioProcessors= */ ImmutableList.of(pitchChanger),
-                        /* videoEffects= */ effects))
+                        /* videoEffects= */ videoEffects))
                 .setDurationUs(presetDurationsUs[i]);
         videoSequenceDurationUs += presetDurationsUs[i];
         mediaItems.add(itemBuilder.build());

demos/composition/src/main/res/layout/composition_preview_activity.xml

@@ -43,7 +43,7 @@
         android:layout_marginBottom="8dp"
         android:padding="8dp"
         android:textAppearance="@style/TextAppearance.AppCompat.Medium"
-        android:text="@string/preview_single_sequence" />
+        android:text="@string/preview_composition" />
 
       <FrameLayout
         android:layout_width="match_parent"
@@ -64,7 +64,7 @@
     android:id="@+id/sequence_header_text"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
-    android:text="@string/single_sequence_items"
+    android:text="@string/video_sequence_items"
     app:layout_constraintStart_toStartOf="parent"
     app:layout_constraintTop_toBottomOf="@id/composition_preview_card_view"
     app:layout_constraintBottom_toTopOf="@id/composition_preset_list"/>
@@ -75,8 +75,18 @@
     android:layout_height="wrap_content"
     android:textAppearance="@style/TextAppearance.AppCompat.Small"
     android:text="@string/edit"
-    app:layout_constraintEnd_toEndOf="parent"
+    app:layout_constraintStart_toEndOf="@id/sequence_header_text"
-    app:layout_constraintTop_toBottomOf="@id/composition_preview_card_view"/>
+    app:layout_constraintTop_toTopOf="@id/sequence_header_text"
+    app:layout_constraintBottom_toBottomOf="@id/sequence_header_text"/>
+
+  <androidx.appcompat.widget.AppCompatCheckBox
+    android:id="@+id/apply_video_effects_checkbox"
+    android:layout_width="wrap_content"
+    android:layout_height="wrap_content"
+    android:text="@string/add_effects"
+    app:layout_constraintStart_toEndOf="@id/edit_sequence_button"
+    app:layout_constraintTop_toTopOf="@id/sequence_header_text"
+    app:layout_constraintBottom_toBottomOf="@id/sequence_header_text" />
 
   <androidx.recyclerview.widget.RecyclerView
     android:id="@+id/composition_preset_list"

demos/composition/src/main/res/values/strings.xml

@@ -16,9 +16,10 @@
 <resources>
   <string name="app_name">Composition Demo</string>
   <string name="edit">Edit</string>
+  <string name="add_effects">Add effects</string>
   <string name="preview" translatable="false">Preview</string>
-  <string name="preview_single_sequence" translatable="false">Single sequence preview</string>
+  <string name="preview_composition" translatable="false">Composition preview</string>
-  <string name="single_sequence_items" translatable="false">Single sequence items:</string>
+  <string name="video_sequence_items" translatable="false">Video sequence items:</string>
   <string name="select_preset_title" translatable="false">Choose preset input</string>
   <string name="export" translatable="false">Export</string>
   <string name="export_completed" translatable="false">Export completed in %.3f seconds.\nOutput: %s</string>