Add an example app for Android native API.
The app is a simple loopback demo demonstrating the usage of Android
native API. This is an initial version and I will add support for
HW codecs etc. in the future.
Bug: webrtc:8769
Change-Id: Ifb6209769dabeb8ca3185b969a1ef8afd6d84390
Reviewed-on: https://webrtc-review.googlesource.com/60540
Reviewed-by: Magnus Jedvert <magjed@webrtc.org>
Commit-Queue: Sami Kalliomäki <sakal@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#22385}diff --git a/examples/androidnativeapi/AndroidManifest.xml b/examples/androidnativeapi/AndroidManifest.xml
new file mode 100644
index 0000000..19e4dc0
--- /dev/null
+++ b/examples/androidnativeapi/AndroidManifest.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+ package="org.webrtc.examples.androidnativeapi">
+
+ <uses-sdk android:minSdkVersion="19" android:targetSdkVersion="27" />
+
+ <uses-permission android:name="android.permission.INTERNET" />
+
+ <application
+ android:allowBackup="true"
+ android:label="@string/app_name"
+ android:supportsRtl="true">
+ <activity android:name=".MainActivity">
+ <intent-filter>
+ <action android:name="android.intent.action.MAIN" />
+
+ <category android:name="android.intent.category.LAUNCHER" />
+ </intent-filter>
+ </activity>
+ </application>
+
+</manifest>
diff --git a/examples/androidnativeapi/BUILD.gn b/examples/androidnativeapi/BUILD.gn
new file mode 100644
index 0000000..a98d63d
--- /dev/null
+++ b/examples/androidnativeapi/BUILD.gn
@@ -0,0 +1,76 @@
+import("//webrtc.gni")
+
+rtc_android_apk("androidnativeapi") {
+ testonly = true
+ apk_name = "androidnativeapi"
+ android_manifest = "AndroidManifest.xml"
+
+ java_files = [
+ "java/org/webrtc/examples/androidnativeapi/MainActivity.java",
+ "java/org/webrtc/examples/androidnativeapi/CallClient.java",
+ ]
+
+ deps = [
+ ":resources",
+ "//sdk/android:libjingle_peerconnection_java",
+ ]
+
+ shared_libraries = [ ":examples_androidnativeapi_jni" ]
+}
+
+generate_jni("generated_jni") {
+ testonly = true
+ sources = [
+ "java/org/webrtc/examples/androidnativeapi/CallClient.java",
+ ]
+ jni_package = ""
+ jni_generator_include = "//sdk/android/src/jni/jni_generator_helper.h"
+}
+
+rtc_shared_library("examples_androidnativeapi_jni") {
+ testonly = true
+ sources = [
+ "jni/androidcallclient.cc",
+ "jni/androidcallclient.h",
+ "jni/onload.cc",
+ ]
+
+ suppressed_configs += [ "//build/config/android:hide_all_but_jni_onload" ]
+ configs += [ "//build/config/android:hide_all_but_jni" ]
+
+ if (is_clang) {
+ # Suppress warnings from the Chromium Clang plugin (bugs.webrtc.org/163).
+ suppressed_configs += [
+ "//build/config/clang:extra_warnings",
+ "//build/config/clang:find_bad_constructs",
+ ]
+ }
+
+ deps = [
+ ":generated_jni",
+ "//api:libjingle_peerconnection_api",
+ "//api/audio_codecs:builtin_audio_decoder_factory",
+ "//api/audio_codecs:builtin_audio_encoder_factory",
+ "//logging:rtc_event_log_impl_base",
+ "//media:rtc_audio_video",
+ "//media:rtc_internal_video_codecs",
+ "//modules/audio_processing",
+ "//modules/utility:utility",
+ "//pc:libjingle_peerconnection",
+ "//pc:pc_test_utils",
+ "//rtc_base:rtc_base",
+ "//rtc_base:rtc_base_approved",
+ "//sdk/android:native_api_base",
+ "//sdk/android:native_api_jni",
+ "//sdk/android:native_api_video",
+ "//system_wrappers:field_trial_default",
+ "//system_wrappers:metrics_default",
+ "//system_wrappers:runtime_enabled_features_default",
+ ]
+}
+
+android_resources("resources") {
+ testonly = true
+ resource_dirs = [ "res" ]
+ custom_package = "org.webrtc.examples.androidnativeapi"
+}
diff --git a/examples/androidnativeapi/DEPS b/examples/androidnativeapi/DEPS
new file mode 100644
index 0000000..2d4c0d8
--- /dev/null
+++ b/examples/androidnativeapi/DEPS
@@ -0,0 +1,4 @@
+include_rules = [
+ "+modules/utility/include",
+ "+sdk/android/native_api",
+]
diff --git a/examples/androidnativeapi/java/org/webrtc/examples/androidnativeapi/CallClient.java b/examples/androidnativeapi/java/org/webrtc/examples/androidnativeapi/CallClient.java
new file mode 100644
index 0000000..5c18cb7
--- /dev/null
+++ b/examples/androidnativeapi/java/org/webrtc/examples/androidnativeapi/CallClient.java
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2018 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.examples.androidnativeapi;
+
+import android.os.Handler;
+import android.os.HandlerThread;
+import org.webrtc.NativeClassQualifiedName;
+import org.webrtc.VideoSink;
+
+public class CallClient {
+ private static final String TAG = "CallClient";
+
+ private final HandlerThread thread;
+ private final Handler handler;
+
+ private long nativeClient;
+
+ public CallClient() {
+ thread = new HandlerThread(TAG + "Thread");
+ thread.start();
+ handler = new Handler(thread.getLooper());
+ handler.post(() -> { nativeClient = nativeCreateClient(); });
+ }
+
+ public void call(VideoSink localSink, VideoSink remoteSink) {
+ handler.post(() -> { nativeCall(nativeClient, localSink, remoteSink); });
+ }
+
+ public void hangup() {
+ handler.post(() -> { nativeHangup(nativeClient); });
+ }
+
+ public void close() {
+ handler.post(() -> {
+ nativeDelete(nativeClient);
+ nativeClient = 0;
+ });
+ thread.quitSafely();
+ }
+
+ private static native long nativeCreateClient();
+ @NativeClassQualifiedName("webrtc_examples::AndroidCallClient")
+ private static native void nativeCall(long nativePtr, VideoSink localSink, VideoSink remoteSink);
+ @NativeClassQualifiedName("webrtc_examples::AndroidCallClient")
+ private static native void nativeHangup(long nativePtr);
+ @NativeClassQualifiedName("webrtc_examples::AndroidCallClient")
+ private static native void nativeDelete(long nativePtr);
+}
diff --git a/examples/androidnativeapi/java/org/webrtc/examples/androidnativeapi/MainActivity.java b/examples/androidnativeapi/java/org/webrtc/examples/androidnativeapi/MainActivity.java
new file mode 100644
index 0000000..cb68c55
--- /dev/null
+++ b/examples/androidnativeapi/java/org/webrtc/examples/androidnativeapi/MainActivity.java
@@ -0,0 +1,80 @@
+/*
+ * Copyright (c) 2018 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.examples.androidnativeapi;
+
+import android.app.Activity;
+import android.os.Bundle;
+import android.widget.Button;
+import org.webrtc.ContextUtils;
+import org.webrtc.EglBase;
+import org.webrtc.GlRectDrawer;
+import org.webrtc.SurfaceViewRenderer;
+
+public class MainActivity extends Activity {
+ private CallClient callClient;
+ private EglBase eglBase;
+ private SurfaceViewRenderer localRenderer;
+ private SurfaceViewRenderer remoteRenderer;
+
+ @Override
+ protected void onCreate(Bundle savedInstance) {
+ ContextUtils.initialize(getApplicationContext());
+
+ super.onCreate(savedInstance);
+ setContentView(R.layout.activity_main);
+
+ System.loadLibrary("examples_androidnativeapi_jni");
+ callClient = new CallClient();
+
+ Button callButton = (Button) findViewById(R.id.call_button);
+ callButton.setOnClickListener((view) -> { callClient.call(localRenderer, remoteRenderer); });
+
+ Button hangupButton = (Button) findViewById(R.id.hangup_button);
+ hangupButton.setOnClickListener((view) -> { callClient.hangup(); });
+ }
+
+ @Override
+ protected void onStart() {
+ super.onStart();
+
+ eglBase = EglBase.create(null /* sharedContext */, EglBase.CONFIG_PLAIN);
+ localRenderer = (SurfaceViewRenderer) findViewById(R.id.local_renderer);
+ remoteRenderer = (SurfaceViewRenderer) findViewById(R.id.remote_renderer);
+
+ localRenderer.init(eglBase.getEglBaseContext(), null /* rendererEvents */, EglBase.CONFIG_PLAIN,
+ new GlRectDrawer());
+ remoteRenderer.init(eglBase.getEglBaseContext(), null /* rendererEvents */,
+ EglBase.CONFIG_PLAIN, new GlRectDrawer());
+ }
+
+ @Override
+ protected void onStop() {
+ callClient.hangup();
+
+ localRenderer.release();
+ remoteRenderer.release();
+ eglBase.release();
+
+ localRenderer = null;
+ remoteRenderer = null;
+ eglBase = null;
+
+ super.onStop();
+ }
+
+ @Override
+ protected void onDestroy() {
+ callClient.close();
+ callClient = null;
+
+ super.onDestroy();
+ }
+}
diff --git a/examples/androidnativeapi/jni/androidcallclient.cc b/examples/androidnativeapi/jni/androidcallclient.cc
new file mode 100644
index 0000000..657bce2
--- /dev/null
+++ b/examples/androidnativeapi/jni/androidcallclient.cc
@@ -0,0 +1,286 @@
+/*
+ * Copyright 2018 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.
+ */
+
+#include "examples/androidnativeapi/jni/androidcallclient.h"
+
+#include <utility>
+
+#include "api/audio_codecs/builtin_audio_decoder_factory.h"
+#include "api/audio_codecs/builtin_audio_encoder_factory.h"
+#include "api/peerconnectioninterface.h"
+#include "examples/androidnativeapi/generated_jni/jni/CallClient_jni.h"
+#include "media/engine/internaldecoderfactory.h"
+#include "media/engine/internalencoderfactory.h"
+#include "media/engine/webrtcmediaengine.h"
+#include "modules/audio_processing/include/audio_processing.h"
+#include "pc/test/fakeperiodicvideocapturer.h"
+#include "rtc_base/ptr_util.h"
+#include "sdk/android/native_api/jni/java_types.h"
+#include "sdk/android/native_api/video/wrapper.h"
+
+namespace webrtc_examples {
+
+class AndroidCallClient::PCObserver : public webrtc::PeerConnectionObserver {
+ public:
+ explicit PCObserver(AndroidCallClient* client);
+
+ void OnSignalingChange(
+ webrtc::PeerConnectionInterface::SignalingState new_state) override;
+ void OnDataChannel(
+ rtc::scoped_refptr<webrtc::DataChannelInterface> data_channel) override;
+ void OnRenegotiationNeeded() override;
+ void OnIceConnectionChange(
+ webrtc::PeerConnectionInterface::IceConnectionState new_state) override;
+ void OnIceGatheringChange(
+ webrtc::PeerConnectionInterface::IceGatheringState new_state) override;
+ void OnIceCandidate(const webrtc::IceCandidateInterface* candidate) override;
+
+ private:
+ const AndroidCallClient* client_;
+};
+
+namespace {
+
+class CreateOfferObserver : public webrtc::CreateSessionDescriptionObserver {
+ public:
+ explicit CreateOfferObserver(
+ rtc::scoped_refptr<webrtc::PeerConnectionInterface> pc);
+
+ void OnSuccess(webrtc::SessionDescriptionInterface* desc) override;
+ void OnFailure(const std::string& error) override;
+
+ private:
+ const rtc::scoped_refptr<webrtc::PeerConnectionInterface> pc_;
+};
+
+class SetRemoteSessionDescriptionObserver
+ : public webrtc::SetRemoteDescriptionObserverInterface {
+ public:
+ void OnSetRemoteDescriptionComplete(webrtc::RTCError error) override;
+};
+
+class SetLocalSessionDescriptionObserver
+ : public webrtc::SetSessionDescriptionObserver {
+ public:
+ void OnSuccess() override;
+ void OnFailure(const std::string& error) override;
+};
+
+} // namespace
+
+AndroidCallClient::AndroidCallClient()
+ : call_started_(false), pc_observer_(rtc::MakeUnique<PCObserver>(this)) {
+ thread_checker_.DetachFromThread();
+ CreatePeerConnectionFactory();
+}
+
+void AndroidCallClient::Call(JNIEnv* env,
+ const webrtc::JavaRef<jobject>& cls,
+ const webrtc::JavaRef<jobject>& local_sink,
+ const webrtc::JavaRef<jobject>& remote_sink) {
+ RTC_DCHECK_RUN_ON(&thread_checker_);
+
+ rtc::CritScope lock(&pc_mutex_);
+ if (call_started_) {
+ RTC_LOG(LS_WARNING) << "Call already started.";
+ return;
+ }
+ call_started_ = true;
+
+ local_sink_ = webrtc::JavaToNativeVideoSink(env, local_sink.obj());
+ remote_sink_ = webrtc::JavaToNativeVideoSink(env, remote_sink.obj());
+
+ // The fake video source wants to be created on the same thread as it is
+ // destroyed. It is destroyed on the signaling thread so we have to invoke
+ // here.
+ // TODO(sakal): Get picture from camera?
+ video_source_ = pcf_->CreateVideoSource(
+ signaling_thread_
+ ->Invoke<std::unique_ptr<webrtc::FakePeriodicVideoCapturer>>(
+ RTC_FROM_HERE, [&] {
+ return rtc::MakeUnique<webrtc::FakePeriodicVideoCapturer>();
+ }));
+
+ CreatePeerConnection();
+ Connect();
+}
+
+void AndroidCallClient::Hangup(JNIEnv* env,
+ const webrtc::JavaRef<jobject>& cls) {
+ RTC_DCHECK_RUN_ON(&thread_checker_);
+
+ call_started_ = false;
+
+ {
+ rtc::CritScope lock(&pc_mutex_);
+ if (pc_ != nullptr) {
+ pc_->Close();
+ pc_ = nullptr;
+ }
+ }
+
+ local_sink_ = nullptr;
+ remote_sink_ = nullptr;
+ video_source_ = nullptr;
+}
+
+void AndroidCallClient::Delete(JNIEnv* env,
+ const webrtc::JavaRef<jobject>& cls) {
+ RTC_DCHECK_RUN_ON(&thread_checker_);
+
+ delete this;
+}
+
+void AndroidCallClient::CreatePeerConnectionFactory() {
+ network_thread_ = rtc::Thread::CreateWithSocketServer();
+ network_thread_->SetName("network_thread", nullptr);
+ RTC_CHECK(network_thread_->Start()) << "Failed to start thread";
+
+ worker_thread_ = rtc::Thread::Create();
+ worker_thread_->SetName("worker_thread", nullptr);
+ RTC_CHECK(worker_thread_->Start()) << "Failed to start thread";
+
+ signaling_thread_ = rtc::Thread::Create();
+ signaling_thread_->SetName("signaling_thread", nullptr);
+ RTC_CHECK(signaling_thread_->Start()) << "Failed to start thread";
+
+ std::unique_ptr<cricket::MediaEngineInterface> media_engine =
+ cricket::WebRtcMediaEngineFactory::Create(
+ nullptr /* adm */, webrtc::CreateBuiltinAudioEncoderFactory(),
+ webrtc::CreateBuiltinAudioDecoderFactory(),
+ rtc::MakeUnique<webrtc::InternalEncoderFactory>(),
+ rtc::MakeUnique<webrtc::InternalDecoderFactory>(),
+ nullptr /* audio_mixer */, webrtc::AudioProcessingBuilder().Create());
+ RTC_LOG(LS_INFO) << "Media engine created: " << media_engine.get();
+
+ pcf_ = CreateModularPeerConnectionFactory(
+ network_thread_.get(), worker_thread_.get(), signaling_thread_.get(),
+ std::move(media_engine), webrtc::CreateCallFactory(),
+ webrtc::CreateRtcEventLogFactory());
+ RTC_LOG(LS_INFO) << "PeerConnectionFactory created: " << pcf_;
+}
+
+void AndroidCallClient::CreatePeerConnection() {
+ rtc::CritScope lock(&pc_mutex_);
+ webrtc::PeerConnectionInterface::RTCConfiguration config;
+ config.sdp_semantics = webrtc::SdpSemantics::kUnifiedPlan;
+ // DTLS SRTP has to be disabled for loopback to work.
+ config.enable_dtls_srtp = false;
+ pc_ = pcf_->CreatePeerConnection(config, nullptr /* port_allocator */,
+ nullptr /* cert_generator */,
+ pc_observer_.get());
+ RTC_LOG(LS_INFO) << "PeerConnection created: " << pc_;
+
+ rtc::scoped_refptr<webrtc::VideoTrackInterface> local_video_track =
+ pcf_->CreateVideoTrack("video", video_source_);
+ local_video_track->AddOrUpdateSink(local_sink_.get(), rtc::VideoSinkWants());
+ pc_->AddTransceiver(local_video_track);
+ RTC_LOG(LS_INFO) << "Local video sink set up: " << local_video_track;
+
+ for (const rtc::scoped_refptr<webrtc::RtpTransceiverInterface>& tranceiver :
+ pc_->GetTransceivers()) {
+ rtc::scoped_refptr<webrtc::MediaStreamTrackInterface> track =
+ tranceiver->receiver()->track();
+ if (track &&
+ track->kind() == webrtc::MediaStreamTrackInterface::kVideoKind) {
+ static_cast<webrtc::VideoTrackInterface*>(track.get())
+ ->AddOrUpdateSink(remote_sink_.get(), rtc::VideoSinkWants());
+ RTC_LOG(LS_INFO) << "Remote video sink set up: " << track;
+ break;
+ }
+ }
+}
+
+void AndroidCallClient::Connect() {
+ rtc::CritScope lock(&pc_mutex_);
+ pc_->CreateOffer(new rtc::RefCountedObject<CreateOfferObserver>(pc_),
+ webrtc::PeerConnectionInterface::RTCOfferAnswerOptions());
+}
+
+AndroidCallClient::PCObserver::PCObserver(AndroidCallClient* client)
+ : client_(client) {}
+
+void AndroidCallClient::PCObserver::OnSignalingChange(
+ webrtc::PeerConnectionInterface::SignalingState new_state) {
+ RTC_LOG(LS_INFO) << "OnSignalingChange: " << new_state;
+}
+
+void AndroidCallClient::PCObserver::OnDataChannel(
+ rtc::scoped_refptr<webrtc::DataChannelInterface> data_channel) {
+ RTC_LOG(LS_INFO) << "OnDataChannel";
+}
+
+void AndroidCallClient::PCObserver::OnRenegotiationNeeded() {
+ RTC_LOG(LS_INFO) << "OnRenegotiationNeeded";
+}
+
+void AndroidCallClient::PCObserver::OnIceConnectionChange(
+ webrtc::PeerConnectionInterface::IceConnectionState new_state) {
+ RTC_LOG(LS_INFO) << "OnIceConnectionChange: " << new_state;
+}
+
+void AndroidCallClient::PCObserver::OnIceGatheringChange(
+ webrtc::PeerConnectionInterface::IceGatheringState new_state) {
+ RTC_LOG(LS_INFO) << "OnIceGatheringChange: " << new_state;
+}
+
+void AndroidCallClient::PCObserver::OnIceCandidate(
+ const webrtc::IceCandidateInterface* candidate) {
+ RTC_LOG(LS_INFO) << "OnIceCandidate: " << candidate->server_url();
+ rtc::CritScope lock(&client_->pc_mutex_);
+ RTC_DCHECK(client_->pc_ != nullptr);
+ client_->pc_->AddIceCandidate(candidate);
+}
+
+CreateOfferObserver::CreateOfferObserver(
+ rtc::scoped_refptr<webrtc::PeerConnectionInterface> pc)
+ : pc_(pc) {}
+
+void CreateOfferObserver::OnSuccess(webrtc::SessionDescriptionInterface* desc) {
+ std::string sdp;
+ desc->ToString(&sdp);
+ RTC_LOG(LS_INFO) << "Created offer: " << sdp;
+
+ // Ownership of desc was transferred to us, now we transfer it forward.
+ pc_->SetLocalDescription(
+ new rtc::RefCountedObject<SetLocalSessionDescriptionObserver>(), desc);
+
+ // Generate a fake answer.
+ std::unique_ptr<webrtc::SessionDescriptionInterface> answer(
+ webrtc::CreateSessionDescription(webrtc::SdpType::kAnswer, sdp));
+ pc_->SetRemoteDescription(
+ std::move(answer),
+ new rtc::RefCountedObject<SetRemoteSessionDescriptionObserver>());
+}
+
+void CreateOfferObserver::OnFailure(const std::string& error) {
+ RTC_LOG(LS_INFO) << "Failed to create offer: " << error;
+}
+
+void SetRemoteSessionDescriptionObserver::OnSetRemoteDescriptionComplete(
+ webrtc::RTCError error) {
+ RTC_LOG(LS_INFO) << "Set remote description: " << error.message();
+}
+
+void SetLocalSessionDescriptionObserver::OnSuccess() {
+ RTC_LOG(LS_INFO) << "Set local description success!";
+}
+
+void SetLocalSessionDescriptionObserver::OnFailure(const std::string& error) {
+ RTC_LOG(LS_INFO) << "Set local description failure: " << error;
+}
+
+} // namespace webrtc_examples
+
+static jlong JNI_CallClient_CreateClient(
+ JNIEnv* env,
+ const webrtc::JavaParamRef<jclass>& cls) {
+ return webrtc::NativeToJavaPointer(new webrtc_examples::AndroidCallClient());
+}
diff --git a/examples/androidnativeapi/jni/androidcallclient.h b/examples/androidnativeapi/jni/androidcallclient.h
new file mode 100644
index 0000000..2815b9d
--- /dev/null
+++ b/examples/androidnativeapi/jni/androidcallclient.h
@@ -0,0 +1,73 @@
+/*
+ * Copyright 2018 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.
+ */
+
+#ifndef EXAMPLES_ANDROIDNATIVEAPI_JNI_ANDROIDCALLCLIENT_H_
+#define EXAMPLES_ANDROIDNATIVEAPI_JNI_ANDROIDCALLCLIENT_H_
+
+#include <jni.h>
+
+#include <memory>
+#include <string>
+
+#include "api/peerconnectioninterface.h"
+#include "rtc_base/criticalsection.h"
+#include "rtc_base/scoped_ref_ptr.h"
+#include "rtc_base/thread_checker.h"
+#include "sdk/android/native_api/jni/scoped_java_ref.h"
+
+namespace webrtc_examples {
+
+class AndroidCallClient {
+ public:
+ AndroidCallClient();
+
+ void Call(JNIEnv* env,
+ const webrtc::JavaRef<jobject>& cls,
+ const webrtc::JavaRef<jobject>& local_sink,
+ const webrtc::JavaRef<jobject>& remote_sink);
+ void Hangup(JNIEnv* env, const webrtc::JavaRef<jobject>& cls);
+ // A helper method for Java code to delete this object. Calls delete this.
+ void Delete(JNIEnv* env, const webrtc::JavaRef<jobject>& cls);
+
+ private:
+ class PCObserver;
+
+ void CreatePeerConnectionFactory() RTC_RUN_ON(thread_checker_);
+ void CreatePeerConnection() RTC_RUN_ON(thread_checker_);
+ void Connect() RTC_RUN_ON(thread_checker_);
+
+ rtc::ThreadChecker thread_checker_;
+
+ bool call_started_ RTC_GUARDED_BY(thread_checker_);
+
+ const std::unique_ptr<PCObserver> pc_observer_;
+
+ rtc::scoped_refptr<webrtc::PeerConnectionFactoryInterface> pcf_
+ RTC_GUARDED_BY(thread_checker_);
+ std::unique_ptr<rtc::Thread> network_thread_ RTC_GUARDED_BY(thread_checker_);
+ std::unique_ptr<rtc::Thread> worker_thread_ RTC_GUARDED_BY(thread_checker_);
+ std::unique_ptr<rtc::Thread> signaling_thread_
+ RTC_GUARDED_BY(thread_checker_);
+
+ std::unique_ptr<rtc::VideoSinkInterface<webrtc::VideoFrame>> local_sink_
+ RTC_GUARDED_BY(thread_checker_);
+ std::unique_ptr<rtc::VideoSinkInterface<webrtc::VideoFrame>> remote_sink_
+ RTC_GUARDED_BY(thread_checker_);
+ rtc::scoped_refptr<webrtc::VideoTrackSourceInterface> video_source_
+ RTC_GUARDED_BY(thread_checker_);
+
+ rtc::CriticalSection pc_mutex_;
+ rtc::scoped_refptr<webrtc::PeerConnectionInterface> pc_
+ RTC_GUARDED_BY(pc_mutex_);
+};
+
+} // namespace webrtc_examples
+
+#endif // EXAMPLES_ANDROIDNATIVEAPI_JNI_ANDROIDCALLCLIENT_H_
diff --git a/examples/androidnativeapi/jni/onload.cc b/examples/androidnativeapi/jni/onload.cc
new file mode 100644
index 0000000..4b4b5d9
--- /dev/null
+++ b/examples/androidnativeapi/jni/onload.cc
@@ -0,0 +1,30 @@
+/*
+ * Copyright 2018 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.
+ */
+
+#include <jni.h>
+
+#include "modules/utility/include/jvm_android.h"
+#include "rtc_base/ssladapter.h"
+#include "sdk/android/native_api/base/init.h"
+
+namespace webrtc_examples {
+
+extern "C" jint JNIEXPORT JNICALL JNI_OnLoad(JavaVM* jvm, void* reserved) {
+ webrtc::InitAndroid(jvm);
+ webrtc::JVM::Initialize(jvm);
+ RTC_CHECK(rtc::InitializeSSL()) << "Failed to InitializeSSL()";
+ return JNI_VERSION_1_6;
+}
+
+extern "C" void JNIEXPORT JNICALL JNI_OnUnLoad(JavaVM* jvm, void* reserved) {
+ RTC_CHECK(rtc::CleanupSSL()) << "Failed to CleanupSSL()";
+}
+
+} // namespace webrtc_examples
diff --git a/examples/androidnativeapi/res/layout/activity_main.xml b/examples/androidnativeapi/res/layout/activity_main.xml
new file mode 100644
index 0000000..ac80373
--- /dev/null
+++ b/examples/androidnativeapi/res/layout/activity_main.xml
@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+ xmlns:app="http://schemas.android.com/apk/res-auto"
+ xmlns:tools="http://schemas.android.com/tools"
+ android:orientation="vertical"
+ android:layout_width="match_parent"
+ android:layout_height="match_parent"
+ android:padding="8dp"
+ tools:context="org.webrtc.examples.androidnativeapi.MainActivity">
+
+ <org.webrtc.SurfaceViewRenderer
+ android:id="@+id/local_renderer"
+ android:layout_width="match_parent"
+ android:layout_height="0dp"
+ android:layout_weight="1"
+ android:layout_margin="8dp"/>
+
+ <org.webrtc.SurfaceViewRenderer
+ android:id="@+id/remote_renderer"
+ android:layout_width="match_parent"
+ android:layout_height="0dp"
+ android:layout_weight="1"
+ android:layout_margin="8dp"/>
+
+
+ <LinearLayout
+ android:orientation="horizontal"
+ android:layout_width="match_parent"
+ android:layout_height="48dp"
+ style="?android:attr/buttonBarStyle">
+
+ <Button
+ android:id="@+id/call_button"
+ android:text="@string/call_button"
+ style="?android:attr/buttonBarButtonStyle"
+ android:layout_width="0dp"
+ android:layout_height="48dp"
+ android:layout_weight="1"
+ android:layout_margin="8dp"/>
+
+ <Button
+ android:id="@+id/hangup_button"
+ android:text="@string/hangup_button"
+ style="?android:attr/buttonBarButtonStyle"
+ android:layout_width="0dp"
+ android:layout_height="48dp"
+ android:layout_weight="1"
+ android:layout_margin="8dp"/>
+
+ </LinearLayout>
+
+</LinearLayout>
diff --git a/examples/androidnativeapi/res/values/strings.xml b/examples/androidnativeapi/res/values/strings.xml
new file mode 100644
index 0000000..a00920c
--- /dev/null
+++ b/examples/androidnativeapi/res/values/strings.xml
@@ -0,0 +1,5 @@
+<resources>
+ <string name="app_name">androidnativeapi</string>
+ <string name="call_button">Call</string>
+ <string name="hangup_button">Hangup</string>
+</resources>