Removes usage of native base::android::GetApplicationContext()

BUG=webrtc:7665

Review-Url: https://codereview.webrtc.org/2888093004
Cr-Commit-Position: refs/heads/master@{#18195}

webrtc/base/BUILD.gn

@@ -979,6 +979,7 @@ if (rtc_include_tests) {
 if (is_android) {
   android_library("base_java") {
     java_files = [
+      "java/src/org/webrtc/ContextUtils.java",
       "java/src/org/webrtc/Logging.java",
       "java/src/org/webrtc/Size.java",
       "java/src/org/webrtc/ThreadUtils.java",

webrtc/base/java/src/org/webrtc/ContextUtils.java

@@ -0,0 +1,42 @@
+/*
+ *  Copyright 2017 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+package org.webrtc;
+
+import android.content.Context;
+
+/**
+ * Class for storing the application context and retrieving it in a static context. Similar to
+ * org.chromium.base.ContextUtils.
+ */
+public class ContextUtils {
+  private static Context applicationContext;
+
+  /**
+   * Stores the application context that will be returned by getApplicationContext. This is called
+   * by PeerConnectionFactory.initializeAndroidGlobals.
+   */
+  public static void initialize(Context applicationContext) {
+    if (ContextUtils.applicationContext != null) {
+      throw new RuntimeException("Multiple ContextUtils.initialize calls.");
+    }
+    if (applicationContext == null) {
+      throw new RuntimeException("Application context cannot be null for ContextUtils.initialize.");
+    }
+    ContextUtils.applicationContext = applicationContext;
+  }
+
+  /**
+   * Returns the stored application context.
+   */
+  public static Context getApplicationContext() {
+    return applicationContext;
+  }
+}

webrtc/modules/audio_device/android/audio_manager.cc

@@ -83,11 +83,10 @@ AudioManager::AudioManager()
   j_native_registration_ = j_environment_->RegisterNatives(
       "org/webrtc/voiceengine/WebRtcAudioManager", native_methods,
       arraysize(native_methods));
-  j_audio_manager_.reset(new JavaAudioManager(
-      j_native_registration_.get(),
-      j_native_registration_->NewObject(
-          "<init>", "(Landroid/content/Context;J)V",
-          JVM::GetInstance()->context(), PointerTojlong(this))));
+  j_audio_manager_.reset(
+      new JavaAudioManager(j_native_registration_.get(),
+                           j_native_registration_->NewObject(
+                               "<init>", "(J)V", PointerTojlong(this))));
 }
 
 AudioManager::~AudioManager() {

webrtc/modules/audio_device/android/audio_record_jni.cc

@@ -90,11 +90,10 @@ AudioRecordJni::AudioRecordJni(AudioManager* audio_manager)
   j_native_registration_ = j_environment_->RegisterNatives(
       "org/webrtc/voiceengine/WebRtcAudioRecord", native_methods,
       arraysize(native_methods));
-  j_audio_record_.reset(new JavaAudioRecord(
-      j_native_registration_.get(),
-      j_native_registration_->NewObject(
-          "<init>", "(Landroid/content/Context;J)V",
-          JVM::GetInstance()->context(), PointerTojlong(this))));
+  j_audio_record_.reset(
+      new JavaAudioRecord(j_native_registration_.get(),
+                          j_native_registration_->NewObject(
+                              "<init>", "(J)V", PointerTojlong(this))));
   // Detach from this thread since we want to use the checker to verify calls
   // from the Java based audio thread.
   thread_checker_java_.DetachFromThread();

webrtc/modules/audio_device/android/audio_track_jni.cc

@@ -89,11 +89,10 @@ AudioTrackJni::AudioTrackJni(AudioManager* audio_manager)
   j_native_registration_ = j_environment_->RegisterNatives(
       "org/webrtc/voiceengine/WebRtcAudioTrack", native_methods,
       arraysize(native_methods));
-  j_audio_track_.reset(new JavaAudioTrack(
-      j_native_registration_.get(),
-      j_native_registration_->NewObject(
-          "<init>", "(Landroid/content/Context;J)V",
-          JVM::GetInstance()->context(), PointerTojlong(this))));
+  j_audio_track_.reset(
+      new JavaAudioTrack(j_native_registration_.get(),
+                         j_native_registration_->NewObject(
+                             "<init>", "(J)V", PointerTojlong(this))));
   // Detach from this thread since we want to use the checker to verify calls
   // from the Java based audio thread.
   thread_checker_java_.DetachFromThread();

webrtc/modules/audio_device/android/ensure_initialized.cc

@@ -17,7 +17,7 @@
 // Note: this dependency is dangerous since it reaches into Chromium's base.
 // There's a risk of e.g. macro clashes. This file may only be used in tests.
 RTC_PUSH_IGNORING_WUNDEF()
-#include "base/android/context_utils.h"
+// #include "base/android/context_utils.h"
 #include "base/android/jni_android.h"
 RTC_POP_IGNORING_WUNDEF()
 #include "webrtc/base/checks.h"
@@ -35,10 +35,9 @@ void EnsureInitializedOnce() {
   JNIEnv* jni = ::base::android::AttachCurrentThread();
   JavaVM* jvm = NULL;
   RTC_CHECK_EQ(0, jni->GetJavaVM(&jvm));
-  jobject context = ::base::android::GetApplicationContext().obj();
 
   // Initialize the Java environment (currently only used by the audio manager).
-  webrtc::JVM::Initialize(jvm, context);
+  webrtc::JVM::Initialize(jvm);
 }
 
 void EnsureInitialized() {

webrtc/modules/audio_device/android/java/src/org/webrtc/voiceengine/WebRtcAudioManager.java

@@ -20,6 +20,7 @@ import android.media.AudioTrack;
 import android.os.Build;
 import java.util.Timer;
 import java.util.TimerTask;
+import org.webrtc.ContextUtils;
 import org.webrtc.Logging;
 
 // WebRtcAudioManager handles tasks that uses android.media.AudioManager.
@@ -135,7 +136,6 @@ public class WebRtcAudioManager {
   }
 
   private final long nativeAudioManager;
-  private final Context context;
   private final AudioManager audioManager;
 
   private boolean initialized = false;
@@ -156,11 +156,11 @@ public class WebRtcAudioManager {
 
   private final VolumeLogger volumeLogger;
 
-  WebRtcAudioManager(Context context, long nativeAudioManager) {
+  WebRtcAudioManager(long nativeAudioManager) {
     Logging.d(TAG, "ctor" + WebRtcAudioUtils.getThreadInfo());
-    this.context = context;
     this.nativeAudioManager = nativeAudioManager;
-    audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
+    audioManager =
+        (AudioManager) ContextUtils.getApplicationContext().getSystemService(Context.AUDIO_SERVICE);
     if (DEBUG) {
       WebRtcAudioUtils.logDeviceInfo(TAG);
     }
@@ -224,12 +224,14 @@ public class WebRtcAudioManager {
 
   // Gets the current earpiece state.
   private boolean hasEarpiece() {
-    return context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_TELEPHONY);
+    return ContextUtils.getApplicationContext().getPackageManager().hasSystemFeature(
+        PackageManager.FEATURE_TELEPHONY);
   }
 
   // Returns true if low-latency audio output is supported.
   private boolean isLowLatencyOutputSupported() {
-    return context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_AUDIO_LOW_LATENCY);
+    return ContextUtils.getApplicationContext().getPackageManager().hasSystemFeature(
+        PackageManager.FEATURE_AUDIO_LOW_LATENCY);
   }
 
   // Returns true if low-latency audio input is supported.
@@ -248,7 +250,8 @@ public class WebRtcAudioManager {
   @TargetApi(23)
   private boolean isProAudioSupported() {
     return WebRtcAudioUtils.runningOnMarshmallowOrHigher()
-        && context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_AUDIO_PRO);
+        && ContextUtils.getApplicationContext().getPackageManager().hasSystemFeature(
+               PackageManager.FEATURE_AUDIO_PRO);
   }
 
   // Returns the native output sample rate for this device's output stream.

webrtc/modules/audio_device/android/java/src/org/webrtc/voiceengine/WebRtcAudioRecord.java

@@ -19,6 +19,7 @@ import android.os.Process;
 import java.lang.System;
 import java.nio.ByteBuffer;
 import java.util.concurrent.TimeUnit;
+import org.webrtc.ContextUtils;
 import org.webrtc.Logging;
 import org.webrtc.ThreadUtils;
 
@@ -47,7 +48,6 @@ public class WebRtcAudioRecord {
   private static final long AUDIO_RECORD_THREAD_JOIN_TIMEOUT_MS = 2000;
 
   private final long nativeAudioRecord;
-  private final Context context;
 
   private WebRtcAudioEffects effects = null;
 
@@ -139,9 +139,8 @@ public class WebRtcAudioRecord {
     }
   }
 
-  WebRtcAudioRecord(Context context, long nativeAudioRecord) {
+  WebRtcAudioRecord(long nativeAudioRecord) {
     Logging.d(TAG, "ctor" + WebRtcAudioUtils.getThreadInfo());
-    this.context = context;
     this.nativeAudioRecord = nativeAudioRecord;
     if (DEBUG) {
       WebRtcAudioUtils.logDeviceInfo(TAG);
@@ -169,7 +168,8 @@ public class WebRtcAudioRecord {
 
   private int initRecording(int sampleRate, int channels) {
     Logging.d(TAG, "initRecording(sampleRate=" + sampleRate + ", channels=" + channels + ")");
-    if (!WebRtcAudioUtils.hasPermission(context, android.Manifest.permission.RECORD_AUDIO)) {
+    if (!WebRtcAudioUtils.hasPermission(
+            ContextUtils.getApplicationContext(), android.Manifest.permission.RECORD_AUDIO)) {
       reportWebRtcAudioRecordInitError("RECORD_AUDIO permission is missing");
       return -1;
     }

webrtc/modules/audio_device/android/java/src/org/webrtc/voiceengine/WebRtcAudioTrack.java

@@ -19,6 +19,7 @@ import android.media.AudioTrack;
 import android.os.Process;
 import java.lang.Thread;
 import java.nio.ByteBuffer;
+import org.webrtc.ContextUtils;
 import org.webrtc.Logging;
 
 public class WebRtcAudioTrack {
@@ -36,7 +37,6 @@ public class WebRtcAudioTrack {
   // Average number of callbacks per second.
   private static final int BUFFERS_PER_SECOND = 1000 / CALLBACK_BUFFER_SIZE_MS;
 
-  private final Context context;
   private final long nativeAudioTrack;
   private final AudioManager audioManager;
 
@@ -165,11 +165,11 @@ public class WebRtcAudioTrack {
     }
   }
 
-  WebRtcAudioTrack(Context context, long nativeAudioTrack) {
+  WebRtcAudioTrack(long nativeAudioTrack) {
     Logging.d(TAG, "ctor" + WebRtcAudioUtils.getThreadInfo());
-    this.context = context;
     this.nativeAudioTrack = nativeAudioTrack;
-    audioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);
+    audioManager =
+        (AudioManager) ContextUtils.getApplicationContext().getSystemService(Context.AUDIO_SERVICE);
     if (DEBUG) {
       WebRtcAudioUtils.logDeviceInfo(TAG);
     }

webrtc/modules/utility/include/jvm_android.h

@@ -118,8 +118,7 @@ class JNIEnvironment {
 //   JNIEnv* jni = ::base::android::AttachCurrentThread();
 //   JavaVM* jvm = NULL;
 //   jni->GetJavaVM(&jvm);
-//   jobject context = ::base::android::GetApplicationContext();
-//   webrtc::JVM::Initialize(jvm, context);
+//   webrtc::JVM::Initialize(jvm);
 //
 //   // Header (.h) file of example class called User.
 //   std::unique_ptr<JNIEnvironment> env;
@@ -145,9 +144,9 @@ class JNIEnvironment {
 //   JVM::Uninitialize();
 class JVM {
  public:
-  // Stores global handles to the Java VM interface and the application context.
+  // Stores global handles to the Java VM interface.
   // Should be called once on a thread that is attached to the JVM.
-  static void Initialize(JavaVM* jvm, jobject context);
+  static void Initialize(JavaVM* jvm);
   // Clears handles stored in Initialize(). Must be called on same thread as
   // Initialize().
   static void Uninitialize();
@@ -168,10 +167,9 @@ class JVM {
 
   // TODO(henrika): can we make these private?
   JavaVM* jvm() const { return jvm_; }
-  jobject context() const { return context_; }
 
  protected:
-  JVM(JavaVM* jvm, jobject context);
+  JVM(JavaVM* jvm);
   ~JVM();
 
  private:
@@ -179,7 +177,6 @@ class JVM {
 
   rtc::ThreadChecker thread_checker_;
   JavaVM* const jvm_;
-  jobject context_;
 };
 
 }  // namespace webrtc

webrtc/modules/utility/source/jvm_android.cc

@@ -217,10 +217,10 @@ std::string JNIEnvironment::JavaToStdString(const jstring& j_string) {
 }
 
 // static
-void JVM::Initialize(JavaVM* jvm, jobject context) {
+void JVM::Initialize(JavaVM* jvm) {
   ALOGD("JVM::Initialize%s", GetThreadInfo().c_str());
   RTC_CHECK(!g_jvm);
-  g_jvm = new JVM(jvm, context);
+  g_jvm = new JVM(jvm);
 }
 
 // static
@@ -237,11 +237,9 @@ JVM* JVM::GetInstance() {
   return g_jvm;
 }
 
-JVM::JVM(JavaVM* jvm, jobject context)
-    : jvm_(jvm) {
+JVM::JVM(JavaVM* jvm) : jvm_(jvm) {
   ALOGD("JVM::JVM%s", GetThreadInfo().c_str());
   RTC_CHECK(jni()) << "AttachCurrentThread() must be called on this thread.";
-  context_ = NewGlobalRef(jni(), context);
   LoadClasses(jni());
 }
 
@@ -249,7 +247,6 @@ JVM::~JVM() {
   ALOGD("JVM::~JVM%s", GetThreadInfo().c_str());
   RTC_DCHECK(thread_checker_.CalledOnValidThread());
   FreeClassReferences(jni());
-  DeleteGlobalRef(jni(), context_);
 }
 
 std::unique_ptr<JNIEnvironment> JVM::environment() {

webrtc/pc/test/androidtestinitializer.cc

@@ -19,7 +19,6 @@
 // Since we use Chromes build system for creating the gtest binary, this should
 // be fine.
 RTC_PUSH_IGNORING_WUNDEF()
-#include "base/android/context_utils.h"
 #include "base/android/jni_android.h"
 RTC_POP_IGNORING_WUNDEF()
 
@@ -41,11 +40,10 @@ void EnsureInitializedOnce() {
   JNIEnv* jni = ::base::android::AttachCurrentThread();
   JavaVM* jvm = NULL;
   RTC_CHECK_EQ(0, jni->GetJavaVM(&jvm));
-  jobject context = ::base::android::GetApplicationContext().obj();
 
   RTC_CHECK(rtc::InitializeSSL()) << "Failed to InitializeSSL()";
 
-  webrtc::JVM::Initialize(jvm, context);
+  webrtc::JVM::Initialize(jvm);
 }
 
 }  // anonymous namespace

webrtc/sdk/android/api/org/webrtc/PeerConnectionFactory.java

@@ -10,6 +10,7 @@
 
 package org.webrtc;
 
+import android.content.Context;
 import java.util.List;
 
 /**
@@ -30,6 +31,7 @@ public class PeerConnectionFactory {
 
   private static final String TAG = "PeerConnectionFactory";
   private final long nativeFactory;
+  private static Context applicationContext;
   private static Thread networkThread;
   private static Thread workerThread;
   private static Thread signalingThread;
@@ -52,14 +54,19 @@ public class PeerConnectionFactory {
 
   // Must be called at least once before creating a PeerConnectionFactory
   // (for example, at application startup time).
-  public static native void initializeAndroidGlobals(
-      android.content.Context context, boolean videoHwAcceleration);
+  public static native void nativeInitializeAndroidGlobals(
+      Context context, boolean videoHwAcceleration);
+
+  public static void initializeAndroidGlobals(Context context, boolean videoHwAcceleration) {
+    ContextUtils.initialize(context);
+    nativeInitializeAndroidGlobals(context, videoHwAcceleration);
+  }
 
   // Older signature of initializeAndroidGlobals. The extra parameters are now meaningless.
   @Deprecated
   public static boolean initializeAndroidGlobals(Object context, boolean initializeAudio,
       boolean initializeVideo, boolean videoHwAcceleration) {
-    initializeAndroidGlobals((android.content.Context) context, videoHwAcceleration);
+    initializeAndroidGlobals((Context) context, videoHwAcceleration);
     return true;
   }
 

webrtc/sdk/android/src/jni/peerconnection_jni.cc

@@ -1136,7 +1136,7 @@ JOW(jlong, PeerConnectionFactory_nativeCreateObserver)(
   return (jlong)new PCOJava(jni, j_observer);
 }
 
-JOW(void, PeerConnectionFactory_initializeAndroidGlobals)
+JOW(void, PeerConnectionFactory_nativeInitializeAndroidGlobals)
 (JNIEnv* jni,
  jclass,
  jobject context,
@@ -1146,7 +1146,7 @@ JOW(void, PeerConnectionFactory_initializeAndroidGlobals)
   if (!factory_static_initialized) {
     RTC_DCHECK(j_application_context == nullptr);
     j_application_context = NewGlobalRef(jni, context);
-    webrtc::JVM::Initialize(GetJVM(), context);
+    webrtc::JVM::Initialize(GetJVM());
     factory_static_initialized = true;
   }
 }

webrtc/test/BUILD.gn

@@ -532,3 +532,17 @@ rtc_source_set("audio_codec_mocks") {
     "//testing/gmock",
   ]
 }
+
+if (is_android) {
+  android_library("native_test_java") {
+    testonly = true
+    java_files = [
+      "android/org/webrtc/native_test/RTCNativeUnitTest.java",
+      "android/org/webrtc/native_test/RTCNativeUnitTestActivity.java",
+    ]
+    deps = [
+      "//testing/android/native_test:native_test_java",
+      "//webrtc/base:base_java",
+    ]
+  }
+}

webrtc/test/android/AndroidManifest.xml

@@ -0,0 +1,46 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+Copyright 2017 The WebRTC project authors. All Rights Reserved.
+
+Use of this source code is governed by a BSD-style license
+that can be found in the LICENSE file in the root of the source
+tree. An additional intellectual property rights grant can be found
+in the file PATENTS.  All contributing project authors may
+be found in the AUTHORS file in the root of the source tree.
+-->
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+      package="org.webrtc.native_test"
+      android:versionCode="1"
+      android:versionName="1.0">
+
+    <uses-sdk android:minSdkVersion="16" android:targetSdkVersion="23" />
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
+    <uses-permission android:name="android.permission.BLUETOOTH"/>
+    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
+    <uses-permission android:name="android.permission.CAMERA" />
+    <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS"/>
+    <uses-permission android:name="android.permission.RECORD_AUDIO"/>
+    <uses-permission android:name="android.permission.WAKE_LOCK"/>
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
+
+    <application android:label="NativeTests"
+            android:name="org.chromium.base.BaseChromiumApplication">
+        <uses-library android:name="android.test.runner"/>
+        <activity android:name=".RTCNativeUnitTestActivity"
+                android:label="NativeTest"
+                android:configChanges="orientation|keyboardHidden"
+                android:process=":test_process">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+    <instrumentation android:name="org.chromium.native_test.NativeTestInstrumentationTestRunner"
+            android:targetPackage="org.webrtc.native_test"
+            android:label="Instrumentation entry point for org.webrtc.native_test"/>
+
+</manifest>

webrtc/test/android/org/webrtc/native_test/RTCNativeUnitTest.java

@@ -0,0 +1,26 @@
+/*
+ *  Copyright 2017 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+package org.webrtc.native_test;
+
+import android.app.Activity;
+import org.chromium.native_test.NativeUnitTest;
+import org.webrtc.ContextUtils;
+
+/**
+ * Native unit test that calls ContextUtils.initialize for WebRTC.
+ */
+public class RTCNativeUnitTest extends NativeUnitTest {
+  @Override
+  public void preCreate(Activity activity) {
+    super.preCreate(activity);
+    ContextUtils.initialize(activity.getApplicationContext());
+  }
+}

webrtc/test/android/org/webrtc/native_test/RTCNativeUnitTestActivity.java

@@ -0,0 +1,34 @@
+/*
+ *  Copyright 2017 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+package org.webrtc.native_test;
+
+import android.app.Activity;
+import android.os.Bundle;
+
+/**
+ * Activity that uses RTCNativeUnitTest to run the tests.
+ */
+public class RTCNativeUnitTestActivity extends Activity {
+  private RTCNativeUnitTest mTest = new RTCNativeUnitTest();
+
+  @Override
+  public void onCreate(Bundle savedInstanceState) {
+    mTest.preCreate(this);
+    super.onCreate(savedInstanceState);
+    mTest.postCreate(this);
+  }
+
+  @Override
+  public void onStart() {
+    super.onStart();
+    mTest.postStart(this, false);
+  }
+}

webrtc/webrtc.gni

@@ -266,6 +266,10 @@ template("rtc_test") {
     if (defined(invoker.public_configs)) {
       public_configs += invoker.public_configs
     }
+    if (is_android) {
+      android_manifest = "//webrtc/test/android/AndroidManifest.xml"
+      deps += [ "//webrtc/test:native_test_java" ]
+    }
   }
 }