Allow easier ExoPlayer/Cast integration

This CL adds the fundamental pieces for ExoPlayer/Cast integration and includes a
demo app to showcase this functionality. However, media queues should be supported
in the first release of this extension.

Issue:google#2283

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=165576892

constants.gradle

@@ -22,6 +22,7 @@ project.ext {
     buildToolsVersion = '26'
     testSupportLibraryVersion = '0.5'
     supportLibraryVersion = '26.0.1'
+    playServicesLibraryVersion = '11.0.2'
     dexmakerVersion = '1.2'
     mockitoVersion = '1.9.5'
     releaseVersion = 'r2.5.1'

core_settings.gradle

@@ -28,6 +28,7 @@ include modulePrefix + 'extension-ffmpeg'
 include modulePrefix + 'extension-flac'
 include modulePrefix + 'extension-gvr'
 include modulePrefix + 'extension-ima'
+include modulePrefix + 'extension-cast'
 include modulePrefix + 'extension-mediasession'
 include modulePrefix + 'extension-okhttp'
 include modulePrefix + 'extension-opus'
@@ -46,6 +47,7 @@ project(modulePrefix + 'extension-ffmpeg').projectDir = new File(rootDir, 'exten
 project(modulePrefix + 'extension-flac').projectDir = new File(rootDir, 'extensions/flac')
 project(modulePrefix + 'extension-gvr').projectDir = new File(rootDir, 'extensions/gvr')
 project(modulePrefix + 'extension-ima').projectDir = new File(rootDir, 'extensions/ima')
+project(modulePrefix + 'extension-cast').projectDir = new File(rootDir, 'extensions/cast')
 project(modulePrefix + 'extension-mediasession').projectDir = new File(rootDir, 'extensions/mediasession')
 project(modulePrefix + 'extension-okhttp').projectDir = new File(rootDir, 'extensions/okhttp')
 project(modulePrefix + 'extension-opus').projectDir = new File(rootDir, 'extensions/opus')

demos/cast/README.md

@@ -0,0 +1,4 @@
+# Cast demo application #
+
+This folder contains a demo application that showcases ExoPlayer integration
+with Google Cast.

demos/cast/build.gradle

@@ -0,0 +1,51 @@
+// Copyright (C) 2017 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.
+apply from: '../../constants.gradle'
+apply plugin: 'com.android.application'
+
+android {
+    compileSdkVersion project.ext.compileSdkVersion
+    buildToolsVersion project.ext.buildToolsVersion
+
+    defaultConfig {
+        minSdkVersion 16
+        targetSdkVersion project.ext.targetSdkVersion
+    }
+
+    buildTypes {
+        release {
+            shrinkResources true
+            minifyEnabled true
+            proguardFiles getDefaultProguardFile('proguard-android.txt')
+        }
+        debug {
+            jniDebuggable = true
+        }
+    }
+
+    lintOptions {
+        // The demo app does not have translations.
+        disable 'MissingTranslation'
+    }
+
+}
+
+dependencies {
+    compile project(modulePrefix + 'library-core')
+    compile project(modulePrefix + 'library-dash')
+    compile project(modulePrefix + 'library-hls')
+    compile project(modulePrefix + 'library-smoothstreaming')
+    compile project(modulePrefix + 'library-ui')
+    compile project(modulePrefix + 'extension-cast')
+}

demos/cast/src/main/AndroidManifest.xml

@@ -0,0 +1,43 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2017 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.
+-->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.google.android.exoplayer2.castdemo"
+    android:versionCode="0001"
+    android:versionName="0.0.1">
+
+  <uses-permission android:name="android.permission.INTERNET"/>
+  <uses-sdk android:minSdkVersion="16" android:targetSdkVersion="26"/>
+
+  <application android:label="@string/application_name" android:icon="@mipmap/ic_launcher"
+      android:largeHeap="true" android:allowBackup="false">
+
+    <meta-data android:name="com.google.android.gms.cast.framework.OPTIONS_PROVIDER_CLASS_NAME"
+        android:value="com.google.android.exoplayer2.ext.cast.DefaultCastOptionsProvider" />
+
+    <activity android:name="com.google.android.exoplayer2.castdemo.MainActivity"
+        android:configChanges="keyboard|keyboardHidden|orientation|screenSize|screenLayout|smallestScreenSize|uiMode"
+        android:launchMode="singleTop" android:label="@string/application_name"
+        android:theme="@style/Theme.AppCompat">
+      <intent-filter>
+        <action android:name="android.intent.action.MAIN"/>
+        <category android:name="android.intent.category.LAUNCHER"/>
+        <category android:name="android.intent.category.BROWSABLE"/>
+      </intent-filter>
+    </activity>
+
+  </application>
+
+</manifest>

demos/cast/src/main/java/com/google/android/exoplayer2/castdemo/CastDemoUtil.java

@@ -0,0 +1,92 @@
+/*
+ * Copyright (C) 2017 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 com.google.android.exoplayer2.castdemo;
+
+import com.google.android.exoplayer2.util.MimeTypes;
+import com.google.android.gms.cast.MediaInfo;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * Utility methods and constants for the Cast demo application.
+ */
+/* package */ final class CastDemoUtil {
+
+  public static final String MIME_TYPE_DASH = "application/dash+xml";
+  public static final String MIME_TYPE_HLS = "application/vnd.apple.mpegurl";
+  public static final String MIME_TYPE_SS = "application/vnd.ms-sstr+xml";
+  public static final String MIME_TYPE_VIDEO_MP4 = MimeTypes.VIDEO_MP4;
+
+  /**
+   * The list of samples available in the cast demo app.
+   */
+  public static final List<Sample> SAMPLES;
+
+  /**
+   * Represents a media sample.
+   */
+  public static final class Sample {
+
+    /**
+     * The uri from which the media sample is obtained.
+     */
+    public final String uri;
+    /**
+     * A descriptive name for the sample.
+     */
+    public final String name;
+    /**
+     * The mime type of the media sample, as required by {@link MediaInfo#setContentType}.
+     */
+    public final String type;
+
+    /**
+     * @param uri See {@link #uri}.
+     * @param name See {@link #name}.
+     * @param type See {@link #type}.
+     */
+    public Sample(String uri, String name, String type) {
+      this.uri = uri;
+      this.name = name;
+      this.type = type;
+    }
+
+    @Override
+    public String toString() {
+      return name;
+    }
+
+  }
+
+  static {
+    // App samples.
+    ArrayList<Sample> samples = new ArrayList<>();
+    samples.add(new Sample("https://storage.googleapis.com/wvmedia/clear/h264/tears/tears.mpd",
+        "DASH (clear,MP4,H264)", MIME_TYPE_DASH));
+    samples.add(new Sample("https://commondatastorage.googleapis.com/gtv-videos-bucket/CastVideos/"
+        + "hls/TearsOfSteel.m3u8", "Tears of Steel (HLS)", MIME_TYPE_HLS));
+    samples.add(new Sample("https://html5demos.com/assets/dizzy.mp4", "Dizzy (MP4)",
+        MIME_TYPE_VIDEO_MP4));
+
+
+    SAMPLES = Collections.unmodifiableList(samples);
+
+  }
+
+  private CastDemoUtil() {}
+
+}

demos/cast/src/main/java/com/google/android/exoplayer2/castdemo/MainActivity.java

@@ -0,0 +1,152 @@
+/*
+ * Copyright (C) 2017 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 com.google.android.exoplayer2.castdemo;
+
+import android.graphics.Color;
+import android.os.Bundle;
+import android.support.v7.app.AppCompatActivity;
+import android.view.KeyEvent;
+import android.view.Menu;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.AdapterView;
+import android.widget.ArrayAdapter;
+import android.widget.ListView;
+import com.google.android.exoplayer2.SimpleExoPlayer;
+import com.google.android.exoplayer2.ext.cast.CastPlayer;
+import com.google.android.exoplayer2.ui.PlaybackControlView;
+import com.google.android.exoplayer2.ui.SimpleExoPlayerView;
+import com.google.android.exoplayer2.util.Util;
+import com.google.android.gms.cast.framework.CastButtonFactory;
+
+/**
+ * An activity that plays video using {@link SimpleExoPlayer} and {@link CastPlayer}.
+ */
+public class MainActivity extends AppCompatActivity {
+
+  private SimpleExoPlayerView simpleExoPlayerView;
+  private PlaybackControlView castControlView;
+  private PlayerManager playerManager;
+
+  // Activity lifecycle methods.
+
+  @Override
+  public void onCreate(Bundle savedInstanceState) {
+    super.onCreate(savedInstanceState);
+
+    setContentView(R.layout.main_activity);
+
+    simpleExoPlayerView = (SimpleExoPlayerView) findViewById(R.id.player_view);
+    simpleExoPlayerView.requestFocus();
+
+    castControlView = (PlaybackControlView) findViewById(R.id.cast_control_view);
+
+    ListView sampleList = (ListView) findViewById(R.id.sample_list);
+    sampleList.setAdapter(new SampleListAdapter());
+    sampleList.setOnItemClickListener(new SampleClickListener());
+  }
+
+  @Override
+  public boolean onCreateOptionsMenu(Menu menu) {
+    super.onCreateOptionsMenu(menu);
+    getMenuInflater().inflate(R.menu.menu, menu);
+    CastButtonFactory.setUpMediaRouteButton(getApplicationContext(), menu,
+        R.id.media_route_menu_item);
+    return true;
+  }
+
+  @Override
+  public void onStart() {
+    super.onStart();
+    if (Util.SDK_INT > 23) {
+      setupPlayerManager();
+    }
+  }
+
+  @Override
+  public void onResume() {
+    super.onResume();
+    if ((Util.SDK_INT <= 23)) {
+      setupPlayerManager();
+    }
+  }
+
+  @Override
+  public void onPause() {
+    super.onPause();
+    if (Util.SDK_INT <= 23) {
+      releasePlayerManager();
+    }
+  }
+
+  @Override
+  public void onStop() {
+    super.onStop();
+    if (Util.SDK_INT > 23) {
+      releasePlayerManager();
+    }
+  }
+
+  // Activity input.
+
+  @Override
+  public boolean dispatchKeyEvent(KeyEvent event) {
+    // If the event was not handled then see if the player view can handle it.
+    return super.dispatchKeyEvent(event) || playerManager.dispatchKeyEvent(event);
+  }
+
+  // Internal methods.
+
+  private void setupPlayerManager() {
+    playerManager = new PlayerManager(simpleExoPlayerView, castControlView,
+        getApplicationContext());
+  }
+
+  private void releasePlayerManager() {
+    playerManager.release();
+    playerManager = null;
+  }
+
+  // User controls.
+
+  private final class SampleListAdapter extends ArrayAdapter<CastDemoUtil.Sample> {
+
+    public SampleListAdapter() {
+      super(getApplicationContext(), android.R.layout.simple_list_item_1, CastDemoUtil.SAMPLES);
+    }
+
+    @Override
+    public View getView(int position, View convertView, ViewGroup parent) {
+      View view = super.getView(position, convertView, parent);
+      view.setBackgroundColor(Color.WHITE);
+      return view;
+    }
+
+  }
+
+  private class SampleClickListener implements AdapterView.OnItemClickListener {
+
+    @Override
+    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
+      if (parent.getSelectedItemPosition() != position) {
+        CastDemoUtil.Sample currentSample = CastDemoUtil.SAMPLES.get(position);
+        playerManager.setCurrentSample(currentSample, 0, true);
+      }
+    }
+
+  }
+
+}