src/starboard/android/shared/application_android.cc - cobalt - Git at Google

 // Copyright 2016 The Cobalt Authors. All Rights Reserved.
 //
 // 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.

 #include "starboard/android/shared/application_android.h"

 #include <android/looper.h>
 #include <android/native_activity.h>
 #include <time.h>
 #include <unistd.h>

 #include <string>
 #include <vector>

 #include "starboard/accessibility.h"
 #include "starboard/android/shared/file_internal.h"
 #include "starboard/android/shared/input_events_generator.h"
 #include "starboard/android/shared/jni_env_ext.h"
 #include "starboard/android/shared/jni_utils.h"
 #include "starboard/android/shared/window_internal.h"
 #include "starboard/common/condition_variable.h"
 #include "starboard/common/log.h"
 #include "starboard/common/mutex.h"
 #include "starboard/common/string.h"
 #include "starboard/event.h"
 #include "starboard/shared/starboard/audio_sink/audio_sink_internal.h"

 namespace starboard {
 namespace android {
 namespace shared {

 namespace {
   enum {
     kLooperIdAndroidCommand,
     kLooperIdAndroidInput,
     kLooperIdKeyboardInject,
   };

   const char* AndroidCommandName(
       ApplicationAndroid::AndroidCommand::CommandType type) {
     switch (type) {
       case ApplicationAndroid::AndroidCommand::kUndefined:
         return "Undefined";
       case ApplicationAndroid::AndroidCommand::kStart:
         return "Start";
       case ApplicationAndroid::AndroidCommand::kResume:
         return "Resume";
       case ApplicationAndroid::AndroidCommand::kPause:
         return "Pause";
       case ApplicationAndroid::AndroidCommand::kStop:
         return "Stop";
       case ApplicationAndroid::AndroidCommand::kInputQueueChanged:
         return "InputQueueChanged";
       case ApplicationAndroid::AndroidCommand::kNativeWindowCreated:
         return "NativeWindowCreated";
       case ApplicationAndroid::AndroidCommand::kNativeWindowDestroyed:
         return "NativeWindowDestroyed";
       case ApplicationAndroid::AndroidCommand::kWindowFocusGained:
         return "WindowFocusGained";
       case ApplicationAndroid::AndroidCommand::kWindowFocusLost:
         return "WindowFocusLost";
       default:
         return "unknown";
     }
   }
 }  // namespace

 // "using" doesn't work with class members, so make a local convenience type.
 typedef ::starboard::shared::starboard::Application::Event Event;

 ApplicationAndroid::ApplicationAndroid(ALooper* looper)
     : looper_(looper),
       native_window_(NULL),
       input_queue_(NULL),
       android_command_readfd_(-1),
       android_command_writefd_(-1),
       keyboard_inject_readfd_(-1),
       keyboard_inject_writefd_(-1),
       android_command_condition_(android_command_mutex_),
       activity_state_(AndroidCommand::kUndefined),
       window_(kSbWindowInvalid),
       last_is_accessibility_high_contrast_text_enabled_(false) {

   // Initialize Time Zone early so that local time works correctly.
   // Called once here to help SbTimeZoneGet*Name()
   tzset();

   // Initialize Android asset access early so that ICU can load its tables
   // from the assets. The use ICU is used in our logging.
   SbFileAndroidInitialize();

   int pipefd[2];
   int err;

   err = pipe(pipefd);
   SB_CHECK(err >= 0) << "pipe errno is:" << errno;
   android_command_readfd_ = pipefd[0];
   android_command_writefd_ = pipefd[1];
   ALooper_addFd(looper_, android_command_readfd_, kLooperIdAndroidCommand,
                 ALOOPER_EVENT_INPUT, NULL, NULL);

   err = pipe(pipefd);
   SB_CHECK(err >= 0) << "pipe errno is:" << errno;
   keyboard_inject_readfd_ = pipefd[0];
   keyboard_inject_writefd_ = pipefd[1];
   ALooper_addFd(looper_, keyboard_inject_readfd_, kLooperIdKeyboardInject,
                 ALOOPER_EVENT_INPUT, NULL, NULL);
 }

 ApplicationAndroid::~ApplicationAndroid() {
   ALooper_removeFd(looper_, android_command_readfd_);
   close(android_command_readfd_);
   close(android_command_writefd_);

   ALooper_removeFd(looper_, keyboard_inject_readfd_);
   close(keyboard_inject_readfd_);
   close(keyboard_inject_writefd_);
 }

 void ApplicationAndroid::Initialize() {
   SbAudioSinkPrivate::Initialize();
 }

 void ApplicationAndroid::Teardown() {
   SbAudioSinkPrivate::TearDown();
   SbFileAndroidTeardown();
 }

 SbWindow ApplicationAndroid::CreateWindow(const SbWindowOptions* options) {
   SB_UNREFERENCED_PARAMETER(options);
   if (SbWindowIsValid(window_)) {
     return kSbWindowInvalid;
   }
   window_ = new SbWindowPrivate;
   window_->native_window = native_window_;
   input_events_generator_.reset(new InputEventsGenerator(window_));
   return window_;
 }

 bool ApplicationAndroid::DestroyWindow(SbWindow window) {
   if (!SbWindowIsValid(window)) {
     return false;
   }

   input_events_generator_.reset();

   SB_DCHECK(window == window_);
   delete window_;
   window_ = kSbWindowInvalid;
   return true;
 }

 Event* ApplicationAndroid::WaitForSystemEventWithTimeout(SbTime time) {
   // Convert from microseconds to milliseconds, taking the ceiling value.
   // If we take the floor, or round, then we end up busy looping every time
   // the next event time is less than one millisecond.
   int timeout_millis = (time + kSbTimeMillisecond - 1) / kSbTimeMillisecond;
   int looper_events;
   int ident = ALooper_pollAll(timeout_millis, NULL, &looper_events, NULL);
   switch (ident) {
     case kLooperIdAndroidCommand:
       ProcessAndroidCommand();
       break;
     case kLooperIdAndroidInput:
       ProcessAndroidInput();
       break;
     case kLooperIdKeyboardInject:
       ProcessKeyboardInject();
       break;
   }

   // Always return NULL since we already dispatched our own system events.
   return NULL;
 }

 void ApplicationAndroid::WakeSystemEventWait() {
   ALooper_wake(looper_);
 }

 void ApplicationAndroid::OnResume() {
   JniEnvExt* env = JniEnvExt::Get();
   env->CallStarboardVoidMethodOrAbort("beforeStartOrResume", "()V");
 }

 void ApplicationAndroid::ProcessAndroidCommand() {
   JniEnvExt* env = JniEnvExt::Get();
   AndroidCommand cmd;
   int err = read(android_command_readfd_, &cmd, sizeof(cmd));
   SB_DCHECK(err >= 0) << "Command read failed. errno=" << errno;

   SB_LOG(INFO) << "Android command: " << AndroidCommandName(cmd.type);

   // The activity state to which we should sync the starboard state.
   AndroidCommand::CommandType sync_state = AndroidCommand::kUndefined;

   switch (cmd.type) {
     case AndroidCommand::kUndefined:
       break;

     case AndroidCommand::kInputQueueChanged: {
       ScopedLock lock(android_command_mutex_);
       if (input_queue_) {
         AInputQueue_detachLooper(input_queue_);
       }
       input_queue_ = static_cast<AInputQueue*>(cmd.data);
       if (input_queue_) {
         AInputQueue_attachLooper(input_queue_, looper_, kLooperIdAndroidInput,
                                  NULL, NULL);
       }
       // Now that we've swapped our use of the input queue, signal that the
       // Android UI thread can continue.
       android_command_condition_.Signal();
       break;
     }

     // Starboard resume/suspend is tied to the UI window being created/destroyed
     // (rather than to the Activity lifecycle) since Cobalt can't do anything at
     // all if it doesn't have a window surface to draw on.
     case AndroidCommand::kNativeWindowCreated:
       {
         ScopedLock lock(android_command_mutex_);
         native_window_ = static_cast<ANativeWindow*>(cmd.data);
         if (window_) {
           window_->native_window = native_window_;
         }
         // Now that we have the window, signal that the Android UI thread can
         // continue, before we start or resume the Starboard app.
         android_command_condition_.Signal();
       }
       if (state() == kStateUnstarted) {
         // This is the initial launch, so we have to start Cobalt now that we
         // have a window.
         env->CallStarboardVoidMethodOrAbort("beforeStartOrResume", "()V");
         DispatchStart();
       } else {
         // Now that we got a window back, change the command for the switch
         // below to sync up with the current activity lifecycle.
         sync_state = activity_state_;
       }
       break;
     case AndroidCommand::kNativeWindowDestroyed:
       // No need to JNI call StarboardBridge.beforeSuspend() since we did it
       // early in SendAndroidCommand().
       {
         ScopedLock lock(android_command_mutex_);
         // Cobalt can't keep running without a window, even if the Activity
         // hasn't stopped yet. DispatchAndDelete() will inject events as needed
         // if we're not already paused.
         DispatchAndDelete(new Event(kSbEventTypeSuspend, NULL, NULL));
         if (window_) {
           window_->native_window = NULL;
         }
         native_window_ = NULL;
         // Now that we've suspended the Starboard app, and let go of the window,
         // signal that the Android UI thread can continue.
         android_command_condition_.Signal();
       }
       break;

     case AndroidCommand::kWindowFocusLost:
       break;
     case AndroidCommand::kWindowFocusGained: {
       // Android does not have a publicly-exposed way to
       // register for high-contrast text settings changed events.
       // We assume that it can only change when our focus changes
       // (because the user exits and enters the app) so we check
       // for changes here.
       SbAccessibilityDisplaySettings settings;
       SbMemorySet(&settings, 0, sizeof(settings));
       if (!SbAccessibilityGetDisplaySettings(&settings)) {
         break;
       }

       bool enabled = settings.has_high_contrast_text_setting &&
           settings.is_high_contrast_text_enabled;

       if (enabled != last_is_accessibility_high_contrast_text_enabled_) {
         DispatchAndDelete(new Event(
             kSbEventTypeAccessiblitySettingsChanged, NULL, NULL));
       }
       last_is_accessibility_high_contrast_text_enabled_ = enabled;
       break;
     }

     // Remember the Android activity state to sync to when we have a window.
     case AndroidCommand::kStart:
     case AndroidCommand::kResume:
     case AndroidCommand::kPause:
     case AndroidCommand::kStop:
       sync_state = activity_state_ = cmd.type;
       break;
   }

   // If there's a window, sync the app state to the Activity lifecycle, letting
   // DispatchAndDelete() inject events as needed if we missed a state.
   if (native_window_) {
     switch (sync_state) {
       case AndroidCommand::kStart:
         DispatchAndDelete(new Event(kSbEventTypeResume, NULL, NULL));
         break;
       case AndroidCommand::kResume:
         DispatchAndDelete(new Event(kSbEventTypeUnpause, NULL, NULL));
         break;
       case AndroidCommand::kPause:
         DispatchAndDelete(new Event(kSbEventTypePause, NULL, NULL));
         break;
       case AndroidCommand::kStop:
         if (state() != kStateSuspended) {
           // We usually suspend when losing the window above, but if the window
           // wasn't destroyed (e.g. when Daydream starts) then we still have to
           // suspend when the Activity is stopped.
           env->CallStarboardVoidMethodOrAbort("beforeSuspend", "()V");
           DispatchAndDelete(new Event(kSbEventTypeSuspend, NULL, NULL));
         }
         break;
       default:
         break;
     }
   }
 }

 void ApplicationAndroid::SendAndroidCommand(AndroidCommand::CommandType type,
                                             void* data) {
   SB_LOG(INFO) << "Send Android command: " << AndroidCommandName(type);
   if (type == AndroidCommand::kNativeWindowDestroyed) {
     // When this command is processed it will suspend Cobalt, so make the JNI
     // call to StarboardBridge.beforeSuspend() early while still here on the
     // Android main thread. This lets the MediaSession get released now without
     // having to wait to bounce between threads.
     JniEnvExt* env = JniEnvExt::Get();
     env->CallStarboardVoidMethodOrAbort("beforeSuspend", "()V");
   }
   AndroidCommand cmd {type, data};
   ScopedLock lock(android_command_mutex_);
   write(android_command_writefd_, &cmd, sizeof(cmd));
   // Synchronization only necessary when managing resources.
   switch (type) {
     case AndroidCommand::kInputQueueChanged:
       while (input_queue_ != data) {
         android_command_condition_.Wait();
       }
       break;
     case AndroidCommand::kNativeWindowCreated:
     case AndroidCommand::kNativeWindowDestroyed:
       while (native_window_ != data) {
         android_command_condition_.Wait();
       }
       break;
     default:
       break;
   }
 }

 void ApplicationAndroid::ProcessAndroidInput() {
   AInputEvent* android_event = NULL;
   while (AInputQueue_getEvent(input_queue_, &android_event) >= 0) {
     SB_LOG(INFO) << "Android input: type="
                  << AInputEvent_getType(android_event);
     if (AInputQueue_preDispatchEvent(input_queue_, android_event)) {
         continue;
     }
     if (!input_events_generator_) {
       SB_DLOG(WARNING) << "Android input event ignored without an SbWindow.";
       AInputQueue_finishEvent(input_queue_, android_event, false);
       continue;
     }
     InputEventsGenerator::Events app_events;
     bool handled = input_events_generator_->CreateInputEventsFromAndroidEvent(
         android_event, &app_events);
     for (int i = 0; i < app_events.size(); ++i) {
       DispatchAndDelete(app_events[i].release());
     }
     AInputQueue_finishEvent(input_queue_, android_event, handled);
   }
 }

 void ApplicationAndroid::ProcessKeyboardInject() {
   SbKey key;
   int err = read(keyboard_inject_readfd_, &key, sizeof(key));
   SB_DCHECK(err >= 0) << "Keyboard inject read failed: errno=" << errno;
   SB_LOG(INFO) << "Keyboard inject: " << key;
   if (!input_events_generator_) {
     SB_DLOG(WARNING) << "Injected input event ignored without an SbWindow.";
     return;
   }
   InputEventsGenerator::Events app_events;
   input_events_generator_->CreateInputEventsFromSbKey(key, &app_events);
   for (int i = 0; i < app_events.size(); ++i) {
     DispatchAndDelete(app_events[i].release());
   }
 }

 void ApplicationAndroid::SendKeyboardInject(SbKey key) {
   write(keyboard_inject_writefd_, &key, sizeof(key));
 }

 extern "C" SB_EXPORT_PLATFORM void
 Java_dev_cobalt_coat_CobaltA11yHelper_nativeInjectKeyEvent(JNIEnv* env,
                                                            jobject unused_clazz,
                                                            jint key) {
   ApplicationAndroid::Get()->SendKeyboardInject(static_cast<SbKey>(key));
 }

 extern "C" SB_EXPORT_PLATFORM jboolean
 Java_dev_cobalt_coat_KeyboardInputConnection_nativeHasOnScreenKeyboard(
     JniEnvExt* env,
     jobject unused_this) {
 #if SB_HAS(ON_SCREEN_KEYBOARD)
   return JNI_TRUE;
 #else   // SB_HAS(ON_SCREEN_KEYBOARD)
   return JNI_FALSE;
 #endif  // SB_HAS(ON_SCREEN_KEYBOARD)
 }

 #if SB_HAS(ON_SCREEN_KEYBOARD)

 void ApplicationAndroid::SbWindowShowOnScreenKeyboard(SbWindow window,
                                                       const char* input_text,
                                                       int ticket) {
   JniEnvExt* env = JniEnvExt::Get();
   jobject j_keyboard_editor = env->CallStarboardObjectMethodOrAbort(
       "getKeyboardEditor", "()Ldev/cobalt/coat/KeyboardEditor;");
   env->CallVoidMethodOrAbort(j_keyboard_editor, "showKeyboard", "()V");
   int* data = new int;
   *data = ticket;
   Inject(new Event(kSbEventTypeOnScreenKeyboardShown, data,
                    &DeleteDestructor<int>));
   return;
 }

 void ApplicationAndroid::SbWindowHideOnScreenKeyboard(SbWindow window,
                                                       int ticket) {
   JniEnvExt* env = JniEnvExt::Get();
   jobject j_keyboard_editor = env->CallStarboardObjectMethodOrAbort(
       "getKeyboardEditor", "()Ldev/cobalt/coat/KeyboardEditor;");
   env->CallVoidMethodOrAbort(j_keyboard_editor, "hideKeyboard", "()V");
   int* data = new int;
   *data = ticket;
   Inject(new Event(kSbEventTypeOnScreenKeyboardHidden, data,
                    &DeleteDestructor<int>));
   return;
 }

 void ApplicationAndroid::SbWindowUpdateOnScreenKeyboardSuggestions(
     SbWindow window,
     const std::vector<std::string>& suggestions,
     int ticket) {
   JniEnvExt* env = JniEnvExt::Get();
   jobjectArray completions = env->NewObjectArray(
       suggestions.size(),
       env->FindClass("android/view/inputmethod/CompletionInfo"), 0);
   jstring str;
   jobject j_completion_info;
   for (size_t i = 0; i < suggestions.size(); i++) {
     str = env->NewStringUTF(suggestions[i].c_str());
     j_completion_info =
         env->NewObjectOrAbort("android/view/inputmethod/CompletionInfo",
                               "(JILjava/lang/CharSequence;)V", i, i, str);
     env->SetObjectArrayElement(completions, i, j_completion_info);
   }
   jobject j_keyboard_editor = env->CallStarboardObjectMethodOrAbort(
       "getKeyboardEditor", "()Ldev/cobalt/coat/KeyboardEditor;");
   env->CallVoidMethodOrAbort(j_keyboard_editor, "updateCustomCompletions",
                              "([Landroid/view/inputmethod/CompletionInfo;)V",
                              completions);
   int* data = new int;
   *data = ticket;
   Inject(new Event(kSbEventTypeOnScreenKeyboardSuggestionsUpdated, data,
                    &DeleteDestructor<int>));
   return;
 }

 extern "C" SB_EXPORT_PLATFORM void
 Java_dev_cobalt_coat_KeyboardInputConnection_nativeSendText(
     JniEnvExt* env,
     jobject unused_clazz,
     jstring text,
     jboolean is_composing) {
   if (text) {
     std::string utf_str = env->GetStringStandardUTFOrAbort(text);
     ApplicationAndroid::Get()->SbWindowSendInputEvent(utf_str.c_str(),
                                                       is_composing);
   }
 }

 void DeleteSbInputDataWithText(void* ptr) {
   SbInputData* data = static_cast<SbInputData*>(ptr);
   const char* input_text = data->input_text;
   data->input_text = NULL;
   delete input_text;
   ApplicationAndroid::DeleteDestructor<SbInputData>(ptr);
 }

 void ApplicationAndroid::SbWindowSendInputEvent(const char* input_text,
                                                 bool is_composing) {
   char* text = SbStringDuplicate(input_text);
   SbInputData* data = new SbInputData();
   SbMemorySet(data, 0, sizeof(*data));
   data->window = window_;
   data->type = kSbInputEventTypeInput;
   data->device_type = kSbInputDeviceTypeOnScreenKeyboard;
   data->input_text = text;
   data->is_composing = is_composing;
   Inject(new Event(kSbEventTypeInput, data, &DeleteSbInputDataWithText));
   return;
 }

 #endif  // SB_HAS(ON_SCREEN_KEYBOARD)

 bool ApplicationAndroid::OnSearchRequested() {
   for (int i = 0; i < 2; i++) {
     SbInputData* data = new SbInputData();
     SbMemorySet(data, 0, sizeof(*data));
     data->window = window_;
     data->key = kSbKeyBrowserSearch;
     data->type = (i == 0) ? kSbInputEventTypePress : kSbInputEventTypeUnpress;
     Inject(new Event(kSbEventTypeInput, data, &DeleteDestructor<SbInputData>));
   }
   return true;
 }

 extern "C" SB_EXPORT_PLATFORM
 jboolean Java_dev_cobalt_coat_StarboardBridge_nativeOnSearchRequested(
     JniEnvExt* env, jobject unused_this) {
   return ApplicationAndroid::Get()->OnSearchRequested();
 }

 void ApplicationAndroid::HandleDeepLink(const char* link_url) {
   if (link_url == NULL || link_url[0] == '\0') {
     return;
   }
   char* deep_link = SbStringDuplicate(link_url);
   SB_DCHECK(deep_link);
   Inject(new Event(kSbEventTypeLink, deep_link, SbMemoryDeallocate));
 }

 extern "C" SB_EXPORT_PLATFORM
 void Java_dev_cobalt_coat_StarboardBridge_nativeHandleDeepLink(
     JniEnvExt* env, jobject unused_this, jstring j_url) {
   if (j_url) {
     std::string utf_str = env->GetStringStandardUTFOrAbort(j_url);
     ApplicationAndroid::Get()->HandleDeepLink(utf_str.c_str());
   }
 }

 extern "C" SB_EXPORT_PLATFORM
 void Java_dev_cobalt_coat_StarboardBridge_nativeStopApp(
     JniEnvExt* env, jobject unused_this, jint error_level) {
   ApplicationAndroid::Get()->Stop(error_level);
 }

 }  // namespace shared
 }  // namespace android
 }  // namespace starboard
	// Copyright 2016 The Cobalt Authors. All Rights Reserved.
	//
	// 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.

	#include "starboard/android/shared/application_android.h"

	#include <android/looper.h>
	#include <android/native_activity.h>
	#include <time.h>
	#include <unistd.h>

	#include <string>
	#include <vector>

	#include "starboard/accessibility.h"
	#include "starboard/android/shared/file_internal.h"
	#include "starboard/android/shared/input_events_generator.h"
	#include "starboard/android/shared/jni_env_ext.h"
	#include "starboard/android/shared/jni_utils.h"
	#include "starboard/android/shared/window_internal.h"
	#include "starboard/common/condition_variable.h"
	#include "starboard/common/log.h"
	#include "starboard/common/mutex.h"
	#include "starboard/common/string.h"
	#include "starboard/event.h"
	#include "starboard/shared/starboard/audio_sink/audio_sink_internal.h"

	namespace starboard {
	namespace android {
	namespace shared {

	namespace {
	enum {
	kLooperIdAndroidCommand,
	kLooperIdAndroidInput,
	kLooperIdKeyboardInject,
	};

	const char* AndroidCommandName(
	ApplicationAndroid::AndroidCommand::CommandType type) {
	switch (type) {
	case ApplicationAndroid::AndroidCommand::kUndefined:
	return "Undefined";
	case ApplicationAndroid::AndroidCommand::kStart:
	return "Start";
	case ApplicationAndroid::AndroidCommand::kResume:
	return "Resume";
	case ApplicationAndroid::AndroidCommand::kPause:
	return "Pause";
	case ApplicationAndroid::AndroidCommand::kStop:
	return "Stop";
	case ApplicationAndroid::AndroidCommand::kInputQueueChanged:
	return "InputQueueChanged";
	case ApplicationAndroid::AndroidCommand::kNativeWindowCreated:
	return "NativeWindowCreated";
	case ApplicationAndroid::AndroidCommand::kNativeWindowDestroyed:
	return "NativeWindowDestroyed";
	case ApplicationAndroid::AndroidCommand::kWindowFocusGained:
	return "WindowFocusGained";
	case ApplicationAndroid::AndroidCommand::kWindowFocusLost:
	return "WindowFocusLost";
	default:
	return "unknown";
	}
	}
	} // namespace

	// "using" doesn't work with class members, so make a local convenience type.
	typedef ::starboard::shared::starboard::Application::Event Event;

	ApplicationAndroid::ApplicationAndroid(ALooper* looper)
	: looper_(looper),
	native_window_(NULL),
	input_queue_(NULL),
	android_command_readfd_(-1),
	android_command_writefd_(-1),
	keyboard_inject_readfd_(-1),
	keyboard_inject_writefd_(-1),
	android_command_condition_(android_command_mutex_),
	activity_state_(AndroidCommand::kUndefined),
	window_(kSbWindowInvalid),
	last_is_accessibility_high_contrast_text_enabled_(false) {

	// Initialize Time Zone early so that local time works correctly.
	// Called once here to help SbTimeZoneGet*Name()
	tzset();

	// Initialize Android asset access early so that ICU can load its tables
	// from the assets. The use ICU is used in our logging.
	SbFileAndroidInitialize();

	int pipefd[2];
	int err;

	err = pipe(pipefd);
	SB_CHECK(err >= 0) << "pipe errno is:" << errno;
	android_command_readfd_ = pipefd[0];
	android_command_writefd_ = pipefd[1];
	ALooper_addFd(looper_, android_command_readfd_, kLooperIdAndroidCommand,
	ALOOPER_EVENT_INPUT, NULL, NULL);

	err = pipe(pipefd);
	SB_CHECK(err >= 0) << "pipe errno is:" << errno;
	keyboard_inject_readfd_ = pipefd[0];
	keyboard_inject_writefd_ = pipefd[1];
	ALooper_addFd(looper_, keyboard_inject_readfd_, kLooperIdKeyboardInject,
	ALOOPER_EVENT_INPUT, NULL, NULL);
	}

	ApplicationAndroid::~ApplicationAndroid() {
	ALooper_removeFd(looper_, android_command_readfd_);
	close(android_command_readfd_);
	close(android_command_writefd_);

	ALooper_removeFd(looper_, keyboard_inject_readfd_);
	close(keyboard_inject_readfd_);
	close(keyboard_inject_writefd_);
	}

	void ApplicationAndroid::Initialize() {
	SbAudioSinkPrivate::Initialize();
	}

	void ApplicationAndroid::Teardown() {
	SbAudioSinkPrivate::TearDown();
	SbFileAndroidTeardown();
	}

	SbWindow ApplicationAndroid::CreateWindow(const SbWindowOptions* options) {
	SB_UNREFERENCED_PARAMETER(options);
	if (SbWindowIsValid(window_)) {
	return kSbWindowInvalid;
	}
	window_ = new SbWindowPrivate;
	window_->native_window = native_window_;
	input_events_generator_.reset(new InputEventsGenerator(window_));
	return window_;
	}

	bool ApplicationAndroid::DestroyWindow(SbWindow window) {
	if (!SbWindowIsValid(window)) {
	return false;
	}

	input_events_generator_.reset();

	SB_DCHECK(window == window_);
	delete window_;
	window_ = kSbWindowInvalid;
	return true;
	}

	Event* ApplicationAndroid::WaitForSystemEventWithTimeout(SbTime time) {
	// Convert from microseconds to milliseconds, taking the ceiling value.
	// If we take the floor, or round, then we end up busy looping every time
	// the next event time is less than one millisecond.
	int timeout_millis = (time + kSbTimeMillisecond - 1) / kSbTimeMillisecond;
	int looper_events;
	int ident = ALooper_pollAll(timeout_millis, NULL, &looper_events, NULL);
	switch (ident) {
	case kLooperIdAndroidCommand:
	ProcessAndroidCommand();
	break;
	case kLooperIdAndroidInput:
	ProcessAndroidInput();
	break;
	case kLooperIdKeyboardInject:
	ProcessKeyboardInject();
	break;
	}

	// Always return NULL since we already dispatched our own system events.
	return NULL;
	}

	void ApplicationAndroid::WakeSystemEventWait() {
	ALooper_wake(looper_);
	}

	void ApplicationAndroid::OnResume() {
	JniEnvExt* env = JniEnvExt::Get();
	env->CallStarboardVoidMethodOrAbort("beforeStartOrResume", "()V");
	}

	void ApplicationAndroid::ProcessAndroidCommand() {
	JniEnvExt* env = JniEnvExt::Get();
	AndroidCommand cmd;
	int err = read(android_command_readfd_, &cmd, sizeof(cmd));
	SB_DCHECK(err >= 0) << "Command read failed. errno=" << errno;

	SB_LOG(INFO) << "Android command: " << AndroidCommandName(cmd.type);

	// The activity state to which we should sync the starboard state.
	AndroidCommand::CommandType sync_state = AndroidCommand::kUndefined;

	switch (cmd.type) {
	case AndroidCommand::kUndefined:
	break;

	case AndroidCommand::kInputQueueChanged: {
	ScopedLock lock(android_command_mutex_);
	if (input_queue_) {
	AInputQueue_detachLooper(input_queue_);
	}
	input_queue_ = static_cast<AInputQueue*>(cmd.data);
	if (input_queue_) {
	AInputQueue_attachLooper(input_queue_, looper_, kLooperIdAndroidInput,
	NULL, NULL);
	}
	// Now that we've swapped our use of the input queue, signal that the
	// Android UI thread can continue.
	android_command_condition_.Signal();
	break;
	}

	// Starboard resume/suspend is tied to the UI window being created/destroyed
	// (rather than to the Activity lifecycle) since Cobalt can't do anything at
	// all if it doesn't have a window surface to draw on.
	case AndroidCommand::kNativeWindowCreated:
	{
	ScopedLock lock(android_command_mutex_);
	native_window_ = static_cast<ANativeWindow*>(cmd.data);
	if (window_) {
	window_->native_window = native_window_;
	}
	// Now that we have the window, signal that the Android UI thread can
	// continue, before we start or resume the Starboard app.
	android_command_condition_.Signal();
	}
	if (state() == kStateUnstarted) {
	// This is the initial launch, so we have to start Cobalt now that we
	// have a window.
	env->CallStarboardVoidMethodOrAbort("beforeStartOrResume", "()V");
	DispatchStart();
	} else {
	// Now that we got a window back, change the command for the switch
	// below to sync up with the current activity lifecycle.
	sync_state = activity_state_;
	}
	break;
	case AndroidCommand::kNativeWindowDestroyed:
	// No need to JNI call StarboardBridge.beforeSuspend() since we did it
	// early in SendAndroidCommand().
	{
	ScopedLock lock(android_command_mutex_);
	// Cobalt can't keep running without a window, even if the Activity
	// hasn't stopped yet. DispatchAndDelete() will inject events as needed
	// if we're not already paused.
	DispatchAndDelete(new Event(kSbEventTypeSuspend, NULL, NULL));
	if (window_) {
	window_->native_window = NULL;
	}
	native_window_ = NULL;
	// Now that we've suspended the Starboard app, and let go of the window,
	// signal that the Android UI thread can continue.
	android_command_condition_.Signal();
	}
	break;

	case AndroidCommand::kWindowFocusLost:
	break;
	case AndroidCommand::kWindowFocusGained: {
	// Android does not have a publicly-exposed way to
	// register for high-contrast text settings changed events.
	// We assume that it can only change when our focus changes
	// (because the user exits and enters the app) so we check
	// for changes here.
	SbAccessibilityDisplaySettings settings;
	SbMemorySet(&settings, 0, sizeof(settings));
	if (!SbAccessibilityGetDisplaySettings(&settings)) {
	break;
	}

	bool enabled = settings.has_high_contrast_text_setting &&
	settings.is_high_contrast_text_enabled;

	if (enabled != last_is_accessibility_high_contrast_text_enabled_) {
	DispatchAndDelete(new Event(
	kSbEventTypeAccessiblitySettingsChanged, NULL, NULL));
	}
	last_is_accessibility_high_contrast_text_enabled_ = enabled;
	break;
	}

	// Remember the Android activity state to sync to when we have a window.
	case AndroidCommand::kStart:
	case AndroidCommand::kResume:
	case AndroidCommand::kPause:
	case AndroidCommand::kStop:
	sync_state = activity_state_ = cmd.type;
	break;
	}

	// If there's a window, sync the app state to the Activity lifecycle, letting
	// DispatchAndDelete() inject events as needed if we missed a state.
	if (native_window_) {
	switch (sync_state) {
	case AndroidCommand::kStart:
	DispatchAndDelete(new Event(kSbEventTypeResume, NULL, NULL));
	break;
	case AndroidCommand::kResume:
	DispatchAndDelete(new Event(kSbEventTypeUnpause, NULL, NULL));
	break;
	case AndroidCommand::kPause:
	DispatchAndDelete(new Event(kSbEventTypePause, NULL, NULL));
	break;
	case AndroidCommand::kStop:
	if (state() != kStateSuspended) {
	// We usually suspend when losing the window above, but if the window
	// wasn't destroyed (e.g. when Daydream starts) then we still have to
	// suspend when the Activity is stopped.
	env->CallStarboardVoidMethodOrAbort("beforeSuspend", "()V");
	DispatchAndDelete(new Event(kSbEventTypeSuspend, NULL, NULL));
	}
	break;
	default:
	break;
	}
	}
	}

	void ApplicationAndroid::SendAndroidCommand(AndroidCommand::CommandType type,
	void* data) {
	SB_LOG(INFO) << "Send Android command: " << AndroidCommandName(type);
	if (type == AndroidCommand::kNativeWindowDestroyed) {
	// When this command is processed it will suspend Cobalt, so make the JNI
	// call to StarboardBridge.beforeSuspend() early while still here on the
	// Android main thread. This lets the MediaSession get released now without
	// having to wait to bounce between threads.
	JniEnvExt* env = JniEnvExt::Get();
	env->CallStarboardVoidMethodOrAbort("beforeSuspend", "()V");
	}
	AndroidCommand cmd {type, data};
	ScopedLock lock(android_command_mutex_);
	write(android_command_writefd_, &cmd, sizeof(cmd));
	// Synchronization only necessary when managing resources.
	switch (type) {
	case AndroidCommand::kInputQueueChanged:
	while (input_queue_ != data) {
	android_command_condition_.Wait();
	}
	break;
	case AndroidCommand::kNativeWindowCreated:
	case AndroidCommand::kNativeWindowDestroyed:
	while (native_window_ != data) {
	android_command_condition_.Wait();
	}
	break;
	default:
	break;
	}
	}

	void ApplicationAndroid::ProcessAndroidInput() {
	AInputEvent* android_event = NULL;
	while (AInputQueue_getEvent(input_queue_, &android_event) >= 0) {
	SB_LOG(INFO) << "Android input: type="
	<< AInputEvent_getType(android_event);
	if (AInputQueue_preDispatchEvent(input_queue_, android_event)) {
	continue;
	}
	if (!input_events_generator_) {
	SB_DLOG(WARNING) << "Android input event ignored without an SbWindow.";
	AInputQueue_finishEvent(input_queue_, android_event, false);
	continue;
	}
	InputEventsGenerator::Events app_events;
	bool handled = input_events_generator_->CreateInputEventsFromAndroidEvent(
	android_event, &app_events);
	for (int i = 0; i < app_events.size(); ++i) {
	DispatchAndDelete(app_events[i].release());
	}
	AInputQueue_finishEvent(input_queue_, android_event, handled);
	}
	}

	void ApplicationAndroid::ProcessKeyboardInject() {
	SbKey key;
	int err = read(keyboard_inject_readfd_, &key, sizeof(key));
	SB_DCHECK(err >= 0) << "Keyboard inject read failed: errno=" << errno;
	SB_LOG(INFO) << "Keyboard inject: " << key;
	if (!input_events_generator_) {
	SB_DLOG(WARNING) << "Injected input event ignored without an SbWindow.";
	return;
	}
	InputEventsGenerator::Events app_events;
	input_events_generator_->CreateInputEventsFromSbKey(key, &app_events);
	for (int i = 0; i < app_events.size(); ++i) {
	DispatchAndDelete(app_events[i].release());
	}
	}

	void ApplicationAndroid::SendKeyboardInject(SbKey key) {
	write(keyboard_inject_writefd_, &key, sizeof(key));
	}

	extern "C" SB_EXPORT_PLATFORM void
	Java_dev_cobalt_coat_CobaltA11yHelper_nativeInjectKeyEvent(JNIEnv* env,
	jobject unused_clazz,
	jint key) {
	ApplicationAndroid::Get()->SendKeyboardInject(static_cast<SbKey>(key));
	}

	extern "C" SB_EXPORT_PLATFORM jboolean
	Java_dev_cobalt_coat_KeyboardInputConnection_nativeHasOnScreenKeyboard(
	JniEnvExt* env,
	jobject unused_this) {
	#if SB_HAS(ON_SCREEN_KEYBOARD)
	return JNI_TRUE;
	#else // SB_HAS(ON_SCREEN_KEYBOARD)
	return JNI_FALSE;
	#endif // SB_HAS(ON_SCREEN_KEYBOARD)
	}

	#if SB_HAS(ON_SCREEN_KEYBOARD)

	void ApplicationAndroid::SbWindowShowOnScreenKeyboard(SbWindow window,
	const char* input_text,
	int ticket) {
	JniEnvExt* env = JniEnvExt::Get();
	jobject j_keyboard_editor = env->CallStarboardObjectMethodOrAbort(
	"getKeyboardEditor", "()Ldev/cobalt/coat/KeyboardEditor;");
	env->CallVoidMethodOrAbort(j_keyboard_editor, "showKeyboard", "()V");
	int* data = new int;
	*data = ticket;
	Inject(new Event(kSbEventTypeOnScreenKeyboardShown, data,
	&DeleteDestructor<int>));
	return;
	}

	void ApplicationAndroid::SbWindowHideOnScreenKeyboard(SbWindow window,
	int ticket) {
	JniEnvExt* env = JniEnvExt::Get();
	jobject j_keyboard_editor = env->CallStarboardObjectMethodOrAbort(
	"getKeyboardEditor", "()Ldev/cobalt/coat/KeyboardEditor;");
	env->CallVoidMethodOrAbort(j_keyboard_editor, "hideKeyboard", "()V");
	int* data = new int;
	*data = ticket;
	Inject(new Event(kSbEventTypeOnScreenKeyboardHidden, data,
	&DeleteDestructor<int>));
	return;
	}

	void ApplicationAndroid::SbWindowUpdateOnScreenKeyboardSuggestions(
	SbWindow window,
	const std::vector<std::string>& suggestions,
	int ticket) {
	JniEnvExt* env = JniEnvExt::Get();
	jobjectArray completions = env->NewObjectArray(
	suggestions.size(),
	env->FindClass("android/view/inputmethod/CompletionInfo"), 0);
	jstring str;
	jobject j_completion_info;
	for (size_t i = 0; i < suggestions.size(); i++) {
	str = env->NewStringUTF(suggestions[i].c_str());
	j_completion_info =
	env->NewObjectOrAbort("android/view/inputmethod/CompletionInfo",
	"(JILjava/lang/CharSequence;)V", i, i, str);
	env->SetObjectArrayElement(completions, i, j_completion_info);
	}
	jobject j_keyboard_editor = env->CallStarboardObjectMethodOrAbort(
	"getKeyboardEditor", "()Ldev/cobalt/coat/KeyboardEditor;");
	env->CallVoidMethodOrAbort(j_keyboard_editor, "updateCustomCompletions",
	"([Landroid/view/inputmethod/CompletionInfo;)V",
	completions);
	int* data = new int;
	*data = ticket;
	Inject(new Event(kSbEventTypeOnScreenKeyboardSuggestionsUpdated, data,
	&DeleteDestructor<int>));
	return;
	}

	extern "C" SB_EXPORT_PLATFORM void
	Java_dev_cobalt_coat_KeyboardInputConnection_nativeSendText(
	JniEnvExt* env,
	jobject unused_clazz,
	jstring text,
	jboolean is_composing) {
	if (text) {
	std::string utf_str = env->GetStringStandardUTFOrAbort(text);
	ApplicationAndroid::Get()->SbWindowSendInputEvent(utf_str.c_str(),
	is_composing);
	}
	}

	void DeleteSbInputDataWithText(void* ptr) {
	SbInputData* data = static_cast<SbInputData*>(ptr);
	const char* input_text = data->input_text;
	data->input_text = NULL;
	delete input_text;
	ApplicationAndroid::DeleteDestructor<SbInputData>(ptr);
	}

	void ApplicationAndroid::SbWindowSendInputEvent(const char* input_text,
	bool is_composing) {
	char* text = SbStringDuplicate(input_text);
	SbInputData* data = new SbInputData();
	SbMemorySet(data, 0, sizeof(*data));
	data->window = window_;
	data->type = kSbInputEventTypeInput;
	data->device_type = kSbInputDeviceTypeOnScreenKeyboard;
	data->input_text = text;
	data->is_composing = is_composing;
	Inject(new Event(kSbEventTypeInput, data, &DeleteSbInputDataWithText));
	return;
	}

	#endif // SB_HAS(ON_SCREEN_KEYBOARD)

	bool ApplicationAndroid::OnSearchRequested() {
	for (int i = 0; i < 2; i++) {
	SbInputData* data = new SbInputData();
	SbMemorySet(data, 0, sizeof(*data));
	data->window = window_;
	data->key = kSbKeyBrowserSearch;
	data->type = (i == 0) ? kSbInputEventTypePress : kSbInputEventTypeUnpress;
	Inject(new Event(kSbEventTypeInput, data, &DeleteDestructor<SbInputData>));
	}
	return true;
	}

	extern "C" SB_EXPORT_PLATFORM
	jboolean Java_dev_cobalt_coat_StarboardBridge_nativeOnSearchRequested(
	JniEnvExt* env, jobject unused_this) {
	return ApplicationAndroid::Get()->OnSearchRequested();
	}

	void ApplicationAndroid::HandleDeepLink(const char* link_url) {
	if (link_url == NULL \|\| link_url[0] == '\0') {
	return;
	}
	char* deep_link = SbStringDuplicate(link_url);
	SB_DCHECK(deep_link);
	Inject(new Event(kSbEventTypeLink, deep_link, SbMemoryDeallocate));
	}

	extern "C" SB_EXPORT_PLATFORM
	void Java_dev_cobalt_coat_StarboardBridge_nativeHandleDeepLink(
	JniEnvExt* env, jobject unused_this, jstring j_url) {
	if (j_url) {
	std::string utf_str = env->GetStringStandardUTFOrAbort(j_url);
	ApplicationAndroid::Get()->HandleDeepLink(utf_str.c_str());
	}
	}

	extern "C" SB_EXPORT_PLATFORM
	void Java_dev_cobalt_coat_StarboardBridge_nativeStopApp(
	JniEnvExt* env, jobject unused_this, jint error_level) {
	ApplicationAndroid::Get()->Stop(error_level);
	}

	} // namespace shared
	} // namespace android
	} // namespace starboard