Initial commit of the blimp/ folder and target

blimp/client/android/blimp_library_loader.cc

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "blimp/client/android/blimp_library_loader.h"
+
+#include <vector>
+
+#include "base/android/base_jni_onload.h"
+#include "base/android/jni_android.h"
+#include "base/android/library_loader/library_loader_hooks.h"
+#include "base/bind.h"
+#include "base/lazy_instance.h"
+#include "base/logging.h"
+#include "base/message_loop/message_loop.h"
+#include "blimp/client/android/blimp_jni_registrar.h"
+#include "jni/BlimpLibraryLoader_jni.h"
+#include "ui/gl/gl_surface.h"
+
+namespace {
+
+base::LazyInstance<scoped_ptr<base::MessageLoopForUI>> g_main_message_loop =
+    LAZY_INSTANCE_INITIALIZER;
+
+bool LibraryLoaded(JNIEnv* env, jclass clazz) {

[Wez, 2015/08/27 02:01:50]

nit: OnLibraryLoaded

[David Trainor- moved to gerrit, 2015/09/03 06:33:21]

Done.

+  logging::LoggingSettings settings;
+  settings.logging_dest = logging::LOG_TO_SYSTEM_DEBUG_LOG;
+  logging::InitLogging(settings);
+  // To view log output with IDs and timestamps use "adb logcat -v threadtime".
+  logging::SetLogItems(false,   // Process ID
+                       false,   // Thread ID
+                       false,   // Timestamp
+                       false);  // Tick count
+  VLOG(0) << "Chromium logging enabled: level = " << logging::GetMinLogLevel()
+          << ", default verbosity = " << logging::GetVlogVerbosity();
+
+  return true;
+}
+
+bool InitBlimp() {
+  base::android::SetLibraryLoadedHook(&LibraryLoaded);
+  return true;
+}
+
+}  // namespace
+
+namespace blimp {
+
+static jboolean InitializeBlimp(JNIEnv* env, jclass clazz, jobject jcontext) {
+  base::android::ScopedJavaLocalRef<jobject> scoped_jcontext(env, jcontext);
+  base::android::InitApplicationContext(env, scoped_jcontext);
+
+  // TODO(dtrainor): Start the runner?
+  return true;
+}
+
+static jboolean StartBlimp(JNIEnv* env, jclass clazz) {
+  // TODO(dtrainor): Initialize ICU?
+
+  if (!gfx::GLSurface::InitializeOneOff())
+    return false;
+
+  g_main_message_loop.Get().reset(new base::MessageLoopForUI);
+  base::MessageLoopForUI::current()->Start();

[Wez, 2015/08/27 02:01:50]

So.. this is some fun hack around us not actually having control of the process'
main thread?

[David Trainor- moved to gerrit, 2015/09/03 06:33:21]

This is because the message loop is actually driven by Java, so we need to call
Start() and not actually "Run" the message loop.  Java needs to own it because
the entire Android Java framework is also based on message loops/runnables/etc..

+
+  return true;
+}
+
+bool RegisterBlimpLibraryLoaderJni(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}
+
+}  // namespace blimp
+
+JNI_EXPORT jint JNI_OnLoad(JavaVM* vm, void* reserved) {
+  std::vector<base::android::RegisterCallback> register_callbacks;
+  register_callbacks.push_back(base::Bind(&blimp::RegisterBlimpJni));
+
+  std::vector<base::android::InitCallback> init_callbacks;
+  init_callbacks.push_back(base::Bind(&InitBlimp));
+
+  if (!base::android::OnJNIOnLoadRegisterJNI(vm, register_callbacks) ||
+      !base::android::OnJNIOnLoadInit(init_callbacks)) {
+    return -1;
+  }
+
+  return JNI_VERSION_1_4;
+}