Add export settings to demo-composition

Added UI and logic implementation for the following export settings:
* Output audio MIME type
* Output video MIME type
* Enable debug tracing
* Use Media3 Muxer
* Produce fragmented MP4

The settings are shown in a dialog when `Export` button is clicked.

PiperOrigin-RevId: 685648147

demos/composition/build.gradle

@@ -54,6 +54,7 @@ dependencies {
     implementation project(modulePrefix + 'lib-effect')
     implementation project(modulePrefix + 'lib-exoplayer')
     implementation project(modulePrefix + 'lib-exoplayer-dash')
+    implementation project(modulePrefix + 'lib-muxer')
     implementation project(modulePrefix + 'lib-transformer')
     implementation project(modulePrefix + 'lib-ui')
     implementation 'androidx.annotation:annotation:' + androidxAnnotationVersion

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

@@ -23,7 +23,10 @@ import static androidx.media3.transformer.Composition.HDR_MODE_TONE_MAP_HDR_TO_S
 import android.app.Activity;
 import android.content.DialogInterface;
 import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
 import android.widget.ArrayAdapter;
+import android.widget.CheckBox;
 import android.widget.Spinner;
 import android.widget.Toast;
 import androidx.annotation.Nullable;
@@ -34,12 +37,14 @@ import androidx.appcompat.widget.AppCompatCheckBox;
 import androidx.appcompat.widget.AppCompatTextView;
 import androidx.media3.common.Effect;
 import androidx.media3.common.MediaItem;
+import androidx.media3.common.MimeTypes;
 import androidx.media3.common.PlaybackException;
 import androidx.media3.common.Player;
 import androidx.media3.common.audio.SonicAudioProcessor;
 import androidx.media3.common.util.Clock;
 import androidx.media3.common.util.Log;
 import androidx.media3.common.util.Util;
+import androidx.media3.effect.DebugTraceUtil;
 import androidx.media3.effect.LanczosResample;
 import androidx.media3.effect.Presentation;
 import androidx.media3.effect.RgbFilter;
@@ -50,6 +55,7 @@ import androidx.media3.transformer.EditedMediaItemSequence;
 import androidx.media3.transformer.Effects;
 import androidx.media3.transformer.ExportException;
 import androidx.media3.transformer.ExportResult;
+import androidx.media3.transformer.InAppMuxer;
 import androidx.media3.transformer.JsonUtil;
 import androidx.media3.transformer.Transformer;
 import androidx.media3.ui.PlayerView;
@@ -118,7 +124,7 @@ public final class CompositionPreviewActivity extends AppCompatActivity {
 
     exportInformationTextView = findViewById(R.id.export_information_text);
     exportButton = findViewById(R.id.composition_export_button);
-    exportButton.setOnClickListener(view -> exportComposition());
+    exportButton.setOnClickListener(view -> showExportSettings());
 
     AppCompatCheckBox backgroundAudioCheckBox = findViewById(R.id.background_audio_checkbox);
     backgroundAudioCheckBox.setOnCheckedChangeListener(
@@ -231,7 +237,7 @@ public final class CompositionPreviewActivity extends AppCompatActivity {
     Spinner hdrModeSpinner = findViewById(R.id.hdr_mode_spinner);
     int selectedHdrMode =
         HDR_MODE_DESCRIPTIONS.get(String.valueOf(hdrModeSpinner.getSelectedItem()));
-    return new Composition.Builder(/* sequences= */ compositionSequences)
+    return new Composition.Builder(compositionSequences)
         .setEffects(
             new Effects(
                 /* audioProcessors= */ ImmutableList.of(sampleRateChanger),
@@ -302,7 +308,67 @@ public final class CompositionPreviewActivity extends AppCompatActivity {
     }
   }
 
-  private void exportComposition() {
+  private void showExportSettings() {
+    AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(this);
+    LayoutInflater inflater = this.getLayoutInflater();
+    View exportSettingsDialogView = inflater.inflate(R.layout.export_settings, null);
+
+    alertDialogBuilder
+        .setView(exportSettingsDialogView)
+        .setTitle(R.string.export_settings)
+        .setPositiveButton(
+            R.string.export, (dialog, id) -> exportComposition(exportSettingsDialogView))
+        .setNegativeButton(R.string.cancel, (dialog, id) -> dialog.dismiss());
+
+    ArrayAdapter<String> audioMimeAdapter =
+        new ArrayAdapter<>(/* context= */ this, R.layout.spinner_item);
+    audioMimeAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+    Spinner audioMimeSpinner = exportSettingsDialogView.findViewById(R.id.audio_mime_spinner);
+    audioMimeSpinner.setAdapter(audioMimeAdapter);
+    audioMimeAdapter.addAll(
+        SAME_AS_INPUT_OPTION, MimeTypes.AUDIO_AAC, MimeTypes.AUDIO_AMR_NB, MimeTypes.AUDIO_AMR_WB);
+
+    ArrayAdapter<String> videoMimeAdapter =
+        new ArrayAdapter<>(/* context= */ this, R.layout.spinner_item);
+    videoMimeAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
+    Spinner videoMimeSpinner = exportSettingsDialogView.findViewById(R.id.video_mime_spinner);
+    videoMimeSpinner.setAdapter(videoMimeAdapter);
+    videoMimeAdapter.addAll(
+        SAME_AS_INPUT_OPTION,
+        MimeTypes.VIDEO_H263,
+        MimeTypes.VIDEO_H264,
+        MimeTypes.VIDEO_H265,
+        MimeTypes.VIDEO_MP4V,
+        MimeTypes.VIDEO_AV1);
+
+    CheckBox enableDebugTracingCheckBox =
+        exportSettingsDialogView.findViewById(R.id.enable_debug_tracing_checkbox);
+    enableDebugTracingCheckBox.setOnCheckedChangeListener(
+        (buttonView, isChecked) -> DebugTraceUtil.enableTracing = isChecked);
+
+    // Connect producing fragmented MP4 to using Media3 Muxer
+    CheckBox useMedia3MuxerCheckBox =
+        exportSettingsDialogView.findViewById(R.id.use_media3_muxer_checkbox);
+    CheckBox produceFragmentedMp4CheckBox =
+        exportSettingsDialogView.findViewById(R.id.produce_fragmented_mp4_checkbox);
+    useMedia3MuxerCheckBox.setOnCheckedChangeListener(
+        (buttonView, isChecked) -> {
+          if (!isChecked) {
+            produceFragmentedMp4CheckBox.setChecked(false);
+          }
+        });
+    produceFragmentedMp4CheckBox.setOnCheckedChangeListener(
+        (buttonView, isChecked) -> {
+          if (isChecked) {
+            useMedia3MuxerCheckBox.setChecked(true);
+          }
+        });
+
+    AlertDialog dialog = alertDialogBuilder.create();
+    dialog.show();
+  }
+
+  private void exportComposition(View exportSettingsDialogView) {
     // Cancel and clean up files from any ongoing export.
     cancelExport();
 
@@ -323,8 +389,33 @@ public final class CompositionPreviewActivity extends AppCompatActivity {
     }
     String filePath = outputFile.getAbsolutePath();
 
+    Transformer.Builder transformerBuilder = new Transformer.Builder(/* context= */ this);
+
+    Spinner audioMimeTypeSpinner = exportSettingsDialogView.findViewById(R.id.audio_mime_spinner);
+    String selectedAudioMimeType = String.valueOf(audioMimeTypeSpinner.getSelectedItem());
+    if (!SAME_AS_INPUT_OPTION.equals(selectedAudioMimeType)) {
+      transformerBuilder.setAudioMimeType(selectedAudioMimeType);
+    }
+
+    Spinner videoMimeTypeSpinner = exportSettingsDialogView.findViewById(R.id.video_mime_spinner);
+    String selectedVideoMimeType = String.valueOf(videoMimeTypeSpinner.getSelectedItem());
+    if (!SAME_AS_INPUT_OPTION.equals(selectedVideoMimeType)) {
+      transformerBuilder.setVideoMimeType(selectedVideoMimeType);
+    }
+
+    CheckBox useMedia3MuxerCheckBox =
+        exportSettingsDialogView.findViewById(R.id.use_media3_muxer_checkbox);
+    CheckBox produceFragmentedMp4CheckBox =
+        exportSettingsDialogView.findViewById(R.id.produce_fragmented_mp4_checkbox);
+    if (useMedia3MuxerCheckBox.isChecked()) {
+      transformerBuilder.setMuxerFactory(
+          new InAppMuxer.Factory.Builder()
+              .setOutputFragmentedMp4(produceFragmentedMp4CheckBox.isChecked())
+              .build());
+    }
+
     transformer =
-        new Transformer.Builder(/* context= */ this)
+        transformerBuilder
             .addListener(
                 new Transformer.Listener() {
                   @Override
@@ -333,6 +424,7 @@ public final class CompositionPreviewActivity extends AppCompatActivity {
                     long elapsedTimeMs = exportStopwatch.elapsed(TimeUnit.MILLISECONDS);
                     String details =
                         getString(R.string.export_completed, elapsedTimeMs / 1000.f, filePath);
+                    Log.d(TAG, DebugTraceUtil.generateTraceSummary());
                     Log.i(TAG, details);
                     exportInformationTextView.setText(details);
 
@@ -361,6 +453,7 @@ public final class CompositionPreviewActivity extends AppCompatActivity {
                             Toast.LENGTH_LONG)
                         .show();
                     Log.e(TAG, "Export error", exportException);
+                    Log.d(TAG, DebugTraceUtil.generateTraceSummary());
                     exportInformationTextView.setText(R.string.export_error);
                   }
                 })

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

@@ -0,0 +1,110 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright 2024 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.
+-->
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+  android:id="@+id/export_settings_list"
+  android:layout_width="match_parent"
+  android:layout_height="wrap_content"
+  android:orientation="vertical"
+  android:padding="8dp">
+  <LinearLayout
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="horizontal"
+    android:gravity="center_vertical"
+    android:layout_marginBottom="12dp"
+    android:layout_marginTop="12dp">
+    <TextView
+      android:layout_height="wrap_content"
+      android:layout_width="0dp"
+      android:layout_weight="1"
+      android:text="@string/output_audio_mime_type"/>
+    <Spinner
+      android:id="@+id/audio_mime_spinner"
+      android:layout_gravity="end|center_vertical"
+      android:gravity="end"
+      android:layout_height="wrap_content"
+      android:layout_width="wrap_content"/>
+  </LinearLayout>
+  <LinearLayout
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="horizontal"
+    android:gravity="center_vertical"
+    android:layout_marginBottom="12dp">
+    <TextView
+      android:layout_height="wrap_content"
+      android:layout_width="0dp"
+      android:layout_weight="1"
+      android:text="@string/output_video_mime_type"/>
+    <Spinner
+      android:id="@+id/video_mime_spinner"
+      android:layout_gravity="end|center_vertical"
+      android:gravity="end"
+      android:layout_height="wrap_content"
+      android:layout_width="wrap_content"/>
+  </LinearLayout>
+  <LinearLayout
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="horizontal"
+    android:gravity="center_vertical">
+    <TextView
+      android:layout_height="wrap_content"
+      android:layout_width="0dp"
+      android:layout_weight="1"
+      android:text="@string/enable_debug_tracing"/>
+    <CheckBox
+      android:id="@+id/enable_debug_tracing_checkbox"
+      android:layout_gravity="end"
+      android:checked="false"
+      android:layout_height="wrap_content"
+      android:layout_width="wrap_content"/>
+  </LinearLayout>
+  <LinearLayout
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="horizontal"
+    android:gravity="center_vertical">
+    <TextView
+      android:text="@string/use_media3_muxer"
+      android:layout_height="wrap_content"
+      android:layout_width="0dp"
+      android:layout_weight="1" />
+    <CheckBox
+      android:id="@+id/use_media3_muxer_checkbox"
+      android:layout_gravity="end"
+      android:checked="false"
+      android:layout_height="wrap_content"
+      android:layout_width="wrap_content"/>
+  </LinearLayout>
+  <LinearLayout
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="horizontal"
+    android:gravity="center_vertical">
+    <TextView
+      android:text="@string/produce_fragmented_mp4"
+      android:layout_height="wrap_content"
+      android:layout_width="0dp"
+      android:layout_weight="1" />
+    <CheckBox
+      android:id="@+id/produce_fragmented_mp4_checkbox"
+      android:layout_gravity="end"
+      android:checked="false"
+      android:layout_height="wrap_content"
+      android:layout_width="wrap_content"/>
+  </LinearLayout>
+</LinearLayout>

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

@@ -29,4 +29,11 @@
   <string name="output_video_resolution" translatable="false">Output video resolution</string>
   <string name="hdr_mode" translatable="false">HDR mode</string>
   <string name="ok" translatable="false">OK</string>
+  <string name="cancel" translatable="false">Cancel</string>
+  <string name="export_settings" translatable="false">Export Settings</string>
+  <string name="output_audio_mime_type" translatable="false">Output audio MIME type</string>
+  <string name="output_video_mime_type" translatable="false">Output video MIME type</string>
+  <string name="enable_debug_tracing" translatable="false">Enable debug tracing</string>
+  <string name="use_media3_muxer" translatable="false">Use Media3 muxer</string>
+  <string name="produce_fragmented_mp4" translatable="false">Produce fragmented MP4</string>
 </resources>