nuclear@0: /*
nuclear@0:  * Copyright (C) 2010 The Android Open Source Project
nuclear@0:  *
nuclear@0:  * Licensed under the Apache License, Version 2.0 (the "License");
nuclear@0:  * you may not use this file except in compliance with the License.
nuclear@0:  * You may obtain a copy of the License at
nuclear@0:  *
nuclear@0:  *      http://www.apache.org/licenses/LICENSE-2.0
nuclear@0:  *
nuclear@0:  * Unless required by applicable law or agreed to in writing, software
nuclear@0:  * distributed under the License is distributed on an "AS IS" BASIS,
nuclear@0:  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
nuclear@0:  * See the License for the specific language governing permissions and
nuclear@0:  * limitations under the License.
nuclear@0:  *
nuclear@0:  */
nuclear@0: 
nuclear@0: #include <jni.h>
nuclear@0: 
nuclear@0: #include <errno.h>
nuclear@0: #include <string.h>
nuclear@0: #include <unistd.h>
nuclear@0: #include <sys/resource.h>
nuclear@0: 
nuclear@0: #include "android_native_app_glue.h"
nuclear@0: #include <android/log.h>
nuclear@0: 
nuclear@0: #define LOGI(...) ((void)__android_log_print(ANDROID_LOG_INFO, "threaded_app", __VA_ARGS__))
nuclear@0: #define LOGE(...) ((void)__android_log_print(ANDROID_LOG_ERROR, "threaded_app", __VA_ARGS__))
nuclear@0: 
nuclear@0: /* For debug builds, always enable the debug traces in this library */
nuclear@0: #ifndef NDEBUG
nuclear@0: #  define LOGV(...)  ((void)__android_log_print(ANDROID_LOG_VERBOSE, "threaded_app", __VA_ARGS__))
nuclear@0: #else
nuclear@0: #  define LOGV(...)  ((void)0)
nuclear@0: #endif
nuclear@0: 
nuclear@0: static void free_saved_state(struct android_app* android_app) {
nuclear@0:     pthread_mutex_lock(&android_app->mutex);
nuclear@0:     if (android_app->savedState != NULL) {
nuclear@0:         free(android_app->savedState);
nuclear@0:         android_app->savedState = NULL;
nuclear@0:         android_app->savedStateSize = 0;
nuclear@0:     }
nuclear@0:     pthread_mutex_unlock(&android_app->mutex);
nuclear@0: }
nuclear@0: 
nuclear@0: int8_t android_app_read_cmd(struct android_app* android_app) {
nuclear@0:     int8_t cmd;
nuclear@0:     if (read(android_app->msgread, &cmd, sizeof(cmd)) == sizeof(cmd)) {
nuclear@0:         switch (cmd) {
nuclear@0:             case APP_CMD_SAVE_STATE:
nuclear@0:                 free_saved_state(android_app);
nuclear@0:                 break;
nuclear@0:         }
nuclear@0:         return cmd;
nuclear@0:     } else {
nuclear@0:         LOGE("No data on command pipe!");
nuclear@0:     }
nuclear@0:     return -1;
nuclear@0: }
nuclear@0: 
nuclear@0: static void print_cur_config(struct android_app* android_app) {
nuclear@0:     char lang[2], country[2];
nuclear@0:     AConfiguration_getLanguage(android_app->config, lang);
nuclear@0:     AConfiguration_getCountry(android_app->config, country);
nuclear@0: 
nuclear@0:     LOGV("Config: mcc=%d mnc=%d lang=%c%c cnt=%c%c orien=%d touch=%d dens=%d "
nuclear@0:             "keys=%d nav=%d keysHid=%d navHid=%d sdk=%d size=%d long=%d "
nuclear@0:             "modetype=%d modenight=%d",
nuclear@0:             AConfiguration_getMcc(android_app->config),
nuclear@0:             AConfiguration_getMnc(android_app->config),
nuclear@0:             lang[0], lang[1], country[0], country[1],
nuclear@0:             AConfiguration_getOrientation(android_app->config),
nuclear@0:             AConfiguration_getTouchscreen(android_app->config),
nuclear@0:             AConfiguration_getDensity(android_app->config),
nuclear@0:             AConfiguration_getKeyboard(android_app->config),
nuclear@0:             AConfiguration_getNavigation(android_app->config),
nuclear@0:             AConfiguration_getKeysHidden(android_app->config),
nuclear@0:             AConfiguration_getNavHidden(android_app->config),
nuclear@0:             AConfiguration_getSdkVersion(android_app->config),
nuclear@0:             AConfiguration_getScreenSize(android_app->config),
nuclear@0:             AConfiguration_getScreenLong(android_app->config),
nuclear@0:             AConfiguration_getUiModeType(android_app->config),
nuclear@0:             AConfiguration_getUiModeNight(android_app->config));
nuclear@0: }
nuclear@0: 
nuclear@0: void android_app_pre_exec_cmd(struct android_app* android_app, int8_t cmd) {
nuclear@0:     switch (cmd) {
nuclear@0:         case APP_CMD_INPUT_CHANGED:
nuclear@0:             LOGV("APP_CMD_INPUT_CHANGED\n");
nuclear@0:             pthread_mutex_lock(&android_app->mutex);
nuclear@0:             if (android_app->inputQueue != NULL) {
nuclear@0:                 AInputQueue_detachLooper(android_app->inputQueue);
nuclear@0:             }
nuclear@0:             android_app->inputQueue = android_app->pendingInputQueue;
nuclear@0:             if (android_app->inputQueue != NULL) {
nuclear@0:                 LOGV("Attaching input queue to looper");
nuclear@0:                 AInputQueue_attachLooper(android_app->inputQueue,
nuclear@0:                         android_app->looper, LOOPER_ID_INPUT, NULL,
nuclear@0:                         &android_app->inputPollSource);
nuclear@0:             }
nuclear@0:             pthread_cond_broadcast(&android_app->cond);
nuclear@0:             pthread_mutex_unlock(&android_app->mutex);
nuclear@0:             break;
nuclear@0: 
nuclear@0:         case APP_CMD_INIT_WINDOW:
nuclear@0:             LOGV("APP_CMD_INIT_WINDOW\n");
nuclear@0:             pthread_mutex_lock(&android_app->mutex);
nuclear@0:             android_app->window = android_app->pendingWindow;
nuclear@0:             pthread_cond_broadcast(&android_app->cond);
nuclear@0:             pthread_mutex_unlock(&android_app->mutex);
nuclear@0:             break;
nuclear@0: 
nuclear@0:         case APP_CMD_TERM_WINDOW:
nuclear@0:             LOGV("APP_CMD_TERM_WINDOW\n");
nuclear@0:             pthread_cond_broadcast(&android_app->cond);
nuclear@0:             break;
nuclear@0: 
nuclear@0:         case APP_CMD_RESUME:
nuclear@0:         case APP_CMD_START:
nuclear@0:         case APP_CMD_PAUSE:
nuclear@0:         case APP_CMD_STOP:
nuclear@0:             LOGV("activityState=%d\n", cmd);
nuclear@0:             pthread_mutex_lock(&android_app->mutex);
nuclear@0:             android_app->activityState = cmd;
nuclear@0:             pthread_cond_broadcast(&android_app->cond);
nuclear@0:             pthread_mutex_unlock(&android_app->mutex);
nuclear@0:             break;
nuclear@0: 
nuclear@0:         case APP_CMD_CONFIG_CHANGED:
nuclear@0:             LOGV("APP_CMD_CONFIG_CHANGED\n");
nuclear@0:             AConfiguration_fromAssetManager(android_app->config,
nuclear@0:                     android_app->activity->assetManager);
nuclear@0:             print_cur_config(android_app);
nuclear@0:             break;
nuclear@0: 
nuclear@0:         case APP_CMD_DESTROY:
nuclear@0:             LOGV("APP_CMD_DESTROY\n");
nuclear@0:             android_app->destroyRequested = 1;
nuclear@0:             break;
nuclear@0:     }
nuclear@0: }
nuclear@0: 
nuclear@0: void android_app_post_exec_cmd(struct android_app* android_app, int8_t cmd) {
nuclear@0:     switch (cmd) {
nuclear@0:         case APP_CMD_TERM_WINDOW:
nuclear@0:             LOGV("APP_CMD_TERM_WINDOW\n");
nuclear@0:             pthread_mutex_lock(&android_app->mutex);
nuclear@0:             android_app->window = NULL;
nuclear@0:             pthread_cond_broadcast(&android_app->cond);
nuclear@0:             pthread_mutex_unlock(&android_app->mutex);
nuclear@0:             break;
nuclear@0: 
nuclear@0:         case APP_CMD_SAVE_STATE:
nuclear@0:             LOGV("APP_CMD_SAVE_STATE\n");
nuclear@0:             pthread_mutex_lock(&android_app->mutex);
nuclear@0:             android_app->stateSaved = 1;
nuclear@0:             pthread_cond_broadcast(&android_app->cond);
nuclear@0:             pthread_mutex_unlock(&android_app->mutex);
nuclear@0:             break;
nuclear@0: 
nuclear@0:         case APP_CMD_RESUME:
nuclear@0:             free_saved_state(android_app);
nuclear@0:             break;
nuclear@0:     }
nuclear@0: }
nuclear@0: 
nuclear@0: void app_dummy() {
nuclear@0: 
nuclear@0: }
nuclear@0: 
nuclear@0: static void android_app_destroy(struct android_app* android_app) {
nuclear@0:     LOGV("android_app_destroy!");
nuclear@0:     free_saved_state(android_app);
nuclear@0:     pthread_mutex_lock(&android_app->mutex);
nuclear@0:     if (android_app->inputQueue != NULL) {
nuclear@0:         AInputQueue_detachLooper(android_app->inputQueue);
nuclear@0:     }
nuclear@0:     AConfiguration_delete(android_app->config);
nuclear@0:     android_app->destroyed = 1;
nuclear@0:     pthread_cond_broadcast(&android_app->cond);
nuclear@0:     pthread_mutex_unlock(&android_app->mutex);
nuclear@0:     // Can't touch android_app object after this.
nuclear@0: }
nuclear@0: 
nuclear@0: static void process_input(struct android_app* app, struct android_poll_source* source) {
nuclear@0:     AInputEvent* event = NULL;
nuclear@0:     while (AInputQueue_getEvent(app->inputQueue, &event) >= 0) {
nuclear@0:         LOGV("New input event: type=%d\n", AInputEvent_getType(event));
nuclear@0:         if (AInputQueue_preDispatchEvent(app->inputQueue, event)) {
nuclear@0:             continue;
nuclear@0:         }
nuclear@0:         int32_t handled = 0;
nuclear@0:         if (app->onInputEvent != NULL) handled = app->onInputEvent(app, event);
nuclear@0:         AInputQueue_finishEvent(app->inputQueue, event, handled);
nuclear@0:     }
nuclear@0: }
nuclear@0: 
nuclear@0: static void process_cmd(struct android_app* app, struct android_poll_source* source) {
nuclear@0:     int8_t cmd = android_app_read_cmd(app);
nuclear@0:     android_app_pre_exec_cmd(app, cmd);
nuclear@0:     if (app->onAppCmd != NULL) app->onAppCmd(app, cmd);
nuclear@0:     android_app_post_exec_cmd(app, cmd);
nuclear@0: }
nuclear@0: 
nuclear@0: static void* android_app_entry(void* param) {
nuclear@0:     struct android_app* android_app = (struct android_app*)param;
nuclear@0: 
nuclear@0:     android_app->config = AConfiguration_new();
nuclear@0:     AConfiguration_fromAssetManager(android_app->config, android_app->activity->assetManager);
nuclear@0: 
nuclear@0:     print_cur_config(android_app);
nuclear@0: 
nuclear@0:     android_app->cmdPollSource.id = LOOPER_ID_MAIN;
nuclear@0:     android_app->cmdPollSource.app = android_app;
nuclear@0:     android_app->cmdPollSource.process = process_cmd;
nuclear@0:     android_app->inputPollSource.id = LOOPER_ID_INPUT;
nuclear@0:     android_app->inputPollSource.app = android_app;
nuclear@0:     android_app->inputPollSource.process = process_input;
nuclear@0: 
nuclear@0:     ALooper* looper = ALooper_prepare(ALOOPER_PREPARE_ALLOW_NON_CALLBACKS);
nuclear@0:     ALooper_addFd(looper, android_app->msgread, LOOPER_ID_MAIN, ALOOPER_EVENT_INPUT, NULL,
nuclear@0:             &android_app->cmdPollSource);
nuclear@0:     android_app->looper = looper;
nuclear@0: 
nuclear@0:     pthread_mutex_lock(&android_app->mutex);
nuclear@0:     android_app->running = 1;
nuclear@0:     pthread_cond_broadcast(&android_app->cond);
nuclear@0:     pthread_mutex_unlock(&android_app->mutex);
nuclear@0: 
nuclear@0:     android_main(android_app);
nuclear@0: 
nuclear@0:     android_app_destroy(android_app);
nuclear@0:     return NULL;
nuclear@0: }
nuclear@0: 
nuclear@0: // --------------------------------------------------------------------
nuclear@0: // Native activity interaction (called from main thread)
nuclear@0: // --------------------------------------------------------------------
nuclear@0: 
nuclear@0: static struct android_app* android_app_create(ANativeActivity* activity,
nuclear@0:         void* savedState, size_t savedStateSize) {
nuclear@0:     struct android_app* android_app = (struct android_app*)malloc(sizeof(struct android_app));
nuclear@0:     memset(android_app, 0, sizeof(struct android_app));
nuclear@0:     android_app->activity = activity;
nuclear@0: 
nuclear@0:     pthread_mutex_init(&android_app->mutex, NULL);
nuclear@0:     pthread_cond_init(&android_app->cond, NULL);
nuclear@0: 
nuclear@0:     if (savedState != NULL) {
nuclear@0:         android_app->savedState = malloc(savedStateSize);
nuclear@0:         android_app->savedStateSize = savedStateSize;
nuclear@0:         memcpy(android_app->savedState, savedState, savedStateSize);
nuclear@0:     }
nuclear@0: 
nuclear@0:     int msgpipe[2];
nuclear@0:     if (pipe(msgpipe)) {
nuclear@0:         LOGE("could not create pipe: %s", strerror(errno));
nuclear@0:         return NULL;
nuclear@0:     }
nuclear@0:     android_app->msgread = msgpipe[0];
nuclear@0:     android_app->msgwrite = msgpipe[1];
nuclear@0: 
nuclear@0:     pthread_attr_t attr; 
nuclear@0:     pthread_attr_init(&attr);
nuclear@0:     pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
nuclear@0:     pthread_create(&android_app->thread, &attr, android_app_entry, android_app);
nuclear@0: 
nuclear@0:     // Wait for thread to start.
nuclear@0:     pthread_mutex_lock(&android_app->mutex);
nuclear@0:     while (!android_app->running) {
nuclear@0:         pthread_cond_wait(&android_app->cond, &android_app->mutex);
nuclear@0:     }
nuclear@0:     pthread_mutex_unlock(&android_app->mutex);
nuclear@0: 
nuclear@0:     return android_app;
nuclear@0: }
nuclear@0: 
nuclear@0: static void android_app_write_cmd(struct android_app* android_app, int8_t cmd) {
nuclear@0:     if (write(android_app->msgwrite, &cmd, sizeof(cmd)) != sizeof(cmd)) {
nuclear@0:         LOGE("Failure writing android_app cmd: %s\n", strerror(errno));
nuclear@0:     }
nuclear@0: }
nuclear@0: 
nuclear@0: static void android_app_set_input(struct android_app* android_app, AInputQueue* inputQueue) {
nuclear@0:     pthread_mutex_lock(&android_app->mutex);
nuclear@0:     android_app->pendingInputQueue = inputQueue;
nuclear@0:     android_app_write_cmd(android_app, APP_CMD_INPUT_CHANGED);
nuclear@0:     while (android_app->inputQueue != android_app->pendingInputQueue) {
nuclear@0:         pthread_cond_wait(&android_app->cond, &android_app->mutex);
nuclear@0:     }
nuclear@0:     pthread_mutex_unlock(&android_app->mutex);
nuclear@0: }
nuclear@0: 
nuclear@0: static void android_app_set_window(struct android_app* android_app, ANativeWindow* window) {
nuclear@0:     pthread_mutex_lock(&android_app->mutex);
nuclear@0:     if (android_app->pendingWindow != NULL) {
nuclear@0:         android_app_write_cmd(android_app, APP_CMD_TERM_WINDOW);
nuclear@0:     }
nuclear@0:     android_app->pendingWindow = window;
nuclear@0:     if (window != NULL) {
nuclear@0:         android_app_write_cmd(android_app, APP_CMD_INIT_WINDOW);
nuclear@0:     }
nuclear@0:     while (android_app->window != android_app->pendingWindow) {
nuclear@0:         pthread_cond_wait(&android_app->cond, &android_app->mutex);
nuclear@0:     }
nuclear@0:     pthread_mutex_unlock(&android_app->mutex);
nuclear@0: }
nuclear@0: 
nuclear@0: static void android_app_set_activity_state(struct android_app* android_app, int8_t cmd) {
nuclear@0:     pthread_mutex_lock(&android_app->mutex);
nuclear@0:     android_app_write_cmd(android_app, cmd);
nuclear@0:     while (android_app->activityState != cmd) {
nuclear@0:         pthread_cond_wait(&android_app->cond, &android_app->mutex);
nuclear@0:     }
nuclear@0:     pthread_mutex_unlock(&android_app->mutex);
nuclear@0: }
nuclear@0: 
nuclear@0: static void android_app_free(struct android_app* android_app) {
nuclear@0:     pthread_mutex_lock(&android_app->mutex);
nuclear@0:     android_app_write_cmd(android_app, APP_CMD_DESTROY);
nuclear@0:     while (!android_app->destroyed) {
nuclear@0:         pthread_cond_wait(&android_app->cond, &android_app->mutex);
nuclear@0:     }
nuclear@0:     pthread_mutex_unlock(&android_app->mutex);
nuclear@0: 
nuclear@0:     close(android_app->msgread);
nuclear@0:     close(android_app->msgwrite);
nuclear@0:     pthread_cond_destroy(&android_app->cond);
nuclear@0:     pthread_mutex_destroy(&android_app->mutex);
nuclear@0:     free(android_app);
nuclear@0: }
nuclear@0: 
nuclear@0: static void onDestroy(ANativeActivity* activity) {
nuclear@0:     LOGV("Destroy: %p\n", activity);
nuclear@0:     android_app_free((struct android_app*)activity->instance);
nuclear@0: }
nuclear@0: 
nuclear@0: static void onStart(ANativeActivity* activity) {
nuclear@0:     LOGV("Start: %p\n", activity);
nuclear@0:     android_app_set_activity_state((struct android_app*)activity->instance, APP_CMD_START);
nuclear@0: }
nuclear@0: 
nuclear@0: static void onResume(ANativeActivity* activity) {
nuclear@0:     LOGV("Resume: %p\n", activity);
nuclear@0:     android_app_set_activity_state((struct android_app*)activity->instance, APP_CMD_RESUME);
nuclear@0: }
nuclear@0: 
nuclear@0: static void* onSaveInstanceState(ANativeActivity* activity, size_t* outLen) {
nuclear@0:     struct android_app* android_app = (struct android_app*)activity->instance;
nuclear@0:     void* savedState = NULL;
nuclear@0: 
nuclear@0:     LOGV("SaveInstanceState: %p\n", activity);
nuclear@0:     pthread_mutex_lock(&android_app->mutex);
nuclear@0:     android_app->stateSaved = 0;
nuclear@0:     android_app_write_cmd(android_app, APP_CMD_SAVE_STATE);
nuclear@0:     while (!android_app->stateSaved) {
nuclear@0:         pthread_cond_wait(&android_app->cond, &android_app->mutex);
nuclear@0:     }
nuclear@0: 
nuclear@0:     if (android_app->savedState != NULL) {
nuclear@0:         savedState = android_app->savedState;
nuclear@0:         *outLen = android_app->savedStateSize;
nuclear@0:         android_app->savedState = NULL;
nuclear@0:         android_app->savedStateSize = 0;
nuclear@0:     }
nuclear@0: 
nuclear@0:     pthread_mutex_unlock(&android_app->mutex);
nuclear@0: 
nuclear@0:     return savedState;
nuclear@0: }
nuclear@0: 
nuclear@0: static void onPause(ANativeActivity* activity) {
nuclear@0:     LOGV("Pause: %p\n", activity);
nuclear@0:     android_app_set_activity_state((struct android_app*)activity->instance, APP_CMD_PAUSE);
nuclear@0: }
nuclear@0: 
nuclear@0: static void onStop(ANativeActivity* activity) {
nuclear@0:     LOGV("Stop: %p\n", activity);
nuclear@0:     android_app_set_activity_state((struct android_app*)activity->instance, APP_CMD_STOP);
nuclear@0: }
nuclear@0: 
nuclear@0: static void onConfigurationChanged(ANativeActivity* activity) {
nuclear@0:     struct android_app* android_app = (struct android_app*)activity->instance;
nuclear@0:     LOGV("ConfigurationChanged: %p\n", activity);
nuclear@0:     android_app_write_cmd(android_app, APP_CMD_CONFIG_CHANGED);
nuclear@0: }
nuclear@0: 
nuclear@0: static void onLowMemory(ANativeActivity* activity) {
nuclear@0:     struct android_app* android_app = (struct android_app*)activity->instance;
nuclear@0:     LOGV("LowMemory: %p\n", activity);
nuclear@0:     android_app_write_cmd(android_app, APP_CMD_LOW_MEMORY);
nuclear@0: }
nuclear@0: 
nuclear@0: static void onWindowFocusChanged(ANativeActivity* activity, int focused) {
nuclear@0:     LOGV("WindowFocusChanged: %p -- %d\n", activity, focused);
nuclear@0:     android_app_write_cmd((struct android_app*)activity->instance,
nuclear@0:             focused ? APP_CMD_GAINED_FOCUS : APP_CMD_LOST_FOCUS);
nuclear@0: }
nuclear@0: 
nuclear@0: static void onNativeWindowCreated(ANativeActivity* activity, ANativeWindow* window) {
nuclear@0:     LOGV("NativeWindowCreated: %p -- %p\n", activity, window);
nuclear@0:     android_app_set_window((struct android_app*)activity->instance, window);
nuclear@0: }
nuclear@0: 
nuclear@0: static void onNativeWindowDestroyed(ANativeActivity* activity, ANativeWindow* window) {
nuclear@0:     LOGV("NativeWindowDestroyed: %p -- %p\n", activity, window);
nuclear@0:     android_app_set_window((struct android_app*)activity->instance, NULL);
nuclear@0: }
nuclear@0: 
nuclear@0: static void onInputQueueCreated(ANativeActivity* activity, AInputQueue* queue) {
nuclear@0:     LOGV("InputQueueCreated: %p -- %p\n", activity, queue);
nuclear@0:     android_app_set_input((struct android_app*)activity->instance, queue);
nuclear@0: }
nuclear@0: 
nuclear@0: static void onInputQueueDestroyed(ANativeActivity* activity, AInputQueue* queue) {
nuclear@0:     LOGV("InputQueueDestroyed: %p -- %p\n", activity, queue);
nuclear@0:     android_app_set_input((struct android_app*)activity->instance, NULL);
nuclear@0: }
nuclear@0: 
nuclear@0: void ANativeActivity_onCreate(ANativeActivity* activity,
nuclear@0:         void* savedState, size_t savedStateSize) {
nuclear@0:     LOGV("Creating: %p\n", activity);
nuclear@0:     activity->callbacks->onDestroy = onDestroy;
nuclear@0:     activity->callbacks->onStart = onStart;
nuclear@0:     activity->callbacks->onResume = onResume;
nuclear@0:     activity->callbacks->onSaveInstanceState = onSaveInstanceState;
nuclear@0:     activity->callbacks->onPause = onPause;
nuclear@0:     activity->callbacks->onStop = onStop;
nuclear@0:     activity->callbacks->onConfigurationChanged = onConfigurationChanged;
nuclear@0:     activity->callbacks->onLowMemory = onLowMemory;
nuclear@0:     activity->callbacks->onWindowFocusChanged = onWindowFocusChanged;
nuclear@0:     activity->callbacks->onNativeWindowCreated = onNativeWindowCreated;
nuclear@0:     activity->callbacks->onNativeWindowDestroyed = onNativeWindowDestroyed;
nuclear@0:     activity->callbacks->onInputQueueCreated = onInputQueueCreated;
nuclear@0:     activity->callbacks->onInputQueueDestroyed = onInputQueueDestroyed;
nuclear@0: 
nuclear@0:     activity->instance = android_app_create(activity, savedState, savedStateSize);
nuclear@0: }