android_native_app_glue—c.docx

/* * Copyright (C) 2010 The Android Open Source Project * * 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 * * /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 #include #include #include #include #include android_native_app_glue.h#include #define LOGI(.) (void)_android_log_print(ANDROID_LOG_INFO, threaded_app, _VA_ARGS_)#define LOGE(.) (void)_android_log_print(ANDROID_LOG_ERROR, threaded_app, _VA_ARGS_)/* For debug builds, always enable the debug traces in this library */#ifndef NDEBUG# define LOGV(.) (void)_android_log_print(ANDROID_LOG_VERBOSE, threaded_app, _VA_ARGS_)#else# define LOGV(.) (void)0)#endifstatic void free_saved_state(struct android_app* android_app) pthread_mutex_lock(&android_app-mutex); if (android_app-savedState != NULL) free(android_app-savedState); android_app-savedState = NULL; android_app-savedStateSize = 0; pthread_mutex_unlock(&android_app-mutex);int8_t android_app_read_cmd(struct android_app* android_app) int8_t cmd; if (read(android_app-msgread, &cmd, sizeof(cmd) = sizeof(cmd) switch (cmd) case APP_CMD_SAVE_STATE: free_saved_state(android_app); break; return cmd; else LOGE(No data on command pipe!); return -1;static void print_cur_config(struct android_app* android_app) char lang2, country2; AConfiguration_getLanguage(android_app-config, lang); AConfiguration_getCountry(android_app-config, country); LOGV(Config: mcc=%d mnc=%d lang=%c%c cnt=%c%c orien=%d touch=%d dens=%d keys=%d nav=%d keysHid=%d navHid=%d sdk=%d size=%d long=%d modetype=%d modenight=%d, AConfiguration_getMcc(android_app-config), AConfiguration_getMnc(android_app-config), lang0, lang1, country0, country1, AConfiguration_getOrientation(android_app-config), AConfiguration_getTouchscreen(android_app-config), AConfiguration_getDensity(android_app-config), AConfiguration_getKeyboard(android_app-config), AConfiguration_getNavigation(android_app-config), AConfiguration_getKeysHidden(android_app-config), AConfiguration_getNavHidden(android_app-config), AConfiguration_getSdkVersion(android_app-config), AConfiguration_getScreenSize(android_app-config), AConfiguration_getScreenLong(android_app-config), AConfiguration_getUiModeType(android_app-config), AConfiguration_getUiModeNight(android_app-config);void android_app_pre_exec_cmd(struct android_app* android_app, int8_t cmd) switch (cmd) case APP_CMD_INPUT_CHANGED: LOGV(APP_CMD_INPUT_CHANGEDn); pthread_mutex_lock(&android_app-mutex); if (android_app-inputQueue != NULL) AInputQueue_detachLooper(android_app-inputQueue); android_app-inputQueue = android_app-pendingInputQueue; if (android_app-inputQueue != NULL) LOGV(Attaching input queue to looper); AInputQueue_attachLooper(android_app-inputQueue, android_app-looper, LOOPER_ID_INPUT, NULL, &android_app-inputPollSource); pthread_cond_broadcast(&android_app-cond); pthread_mutex_unlock(&android_app-mutex); break; case APP_CMD_INIT_WINDOW: LOGV(APP_CMD_INIT_WINDOWn); pthread_mutex_lock(&android_app-mutex); android_app-window = android_app-pendingWindow; pthread_cond_broadcast(&android_app-cond); pthread_mutex_unlock(&android_app-mutex); break; case APP_CMD_TERM_WINDOW: LOGV(APP_CMD_TERM_WINDOWn); pthread_cond_broadcast(&android_app-cond); break; case APP_CMD_RESUME: case APP_CMD_START: case APP_CMD_PAUSE: case APP_CMD_STOP: LOGV(activityState=%dn, cmd); pthread_mutex_lock(&android_app-mutex); android_app-activityState = cmd; pthread_cond_broadcast(&android_app-cond); pthread_mutex_unlock(&android_app-mutex); break; case APP_CMD_CONFIG_CHANGED: LOGV(APP_CMD_CONFIG_CHANGEDn); AConfiguration_fromAssetManager(android_app-config, android_app-activity-assetManager); print_cur_config(android_app); break; case APP_CMD_DESTROY: LOGV(APP_CMD_DESTROYn); android_app-destroyRequested = 1; break; void android_app_post_exec_cmd(struct android_app* android_app, int8_t cmd) switch (cmd) case APP_CMD_TERM_WINDOW: LOGV(APP_CMD_TERM_WINDOWn); pthread_mutex_lock(&android_app-mutex); android_app-window = NULL; pthread_cond_broadcast(&android_app-cond); pthread_mutex_unlock(&android_app-mutex); break; case APP_CMD_SAVE_STATE: LOGV(APP_CMD_SAVE_STATEn); pthread_mutex_lock(&android_app-mutex); android_app-stateSaved = 1; pthread_cond_broadcast(&android_app-cond); pthread_mutex_unlock(&android_app-mutex); break; case APP_CMD_RESUME: free_saved_state(android_app); break; void app_dummy() static void android_app_destroy(struct android_app* android_app) LOGV(android_app_destroy!); free_saved_state(android_app); pthread_mutex_lock(&android_app-mutex); if (android_app-inputQueue != NULL) AInputQueue_detachLooper(android_app-inputQueue); AConfiguration_delete(android_app-config); android_app-destroyed = 1; pthread_cond_broadcast(&android_app-cond); pthread_mutex_unlock(&android_app-mutex); / Cant touch android_app object after this.static void process_input(struct android_app* app, struct android_poll_source* source) AInputEvent* event = NULL; int processed = 0; while (AInputQueue_getEvent(app-inputQueue, &event) = 0) LOGV(New input event: type=%dn, AInputEvent_getType(event); if (AInputQueue_preDispatchEvent(app-inputQueue, event) continue; int32_t handled = 0; if (app-onInputEvent != NULL) handled = app-onInputEvent(app, event); AInputQueue_finishEvent(app-inputQueue, event, handled); processed = 1; if (processed = 0) LOGE(Failure reading next input event: %sn, strerror(errno); static void process_cmd(struct android_app* app, struct android_poll_source* source) int8_t cmd = android_app_read_cmd(app); android_app_pre_exec_cmd(app, cmd); if (app-onAppCmd != NULL) app-onAppCmd(app, cmd); android_app_post_exec_cmd(app, cmd);static void* android_app_entry(void* param) struct android_app* android_app = (struct android_app*)param; android_app-config = AConfiguration_new(); AConfiguration_fromAssetManager(android_app-config, android_app-activity-assetManager); print_cur_config(android_app); android_app-cmdPollSource.id = LOOPER_ID_MAIN; android_app-cmdPollSource.app = android_app; android_app-cmdPollScess = process_cmd; android_app-inputPollSource.id = LOOPER_ID_INPUT; android_app-inputPollSource.app = android_app; android_app-inputPollScess = process_input; ALooper* looper = ALooper_prepare(ALOOPER_PREPARE_ALLOW_NON_CALLBACKS); ALooper_addFd(looper, android_app-msgread, LOOPER_ID_MAIN, ALOOPER_EVENT_INPUT, NULL, &android_app-cmdPollSource); android_app-looper = looper; pthread_mutex_lock(&android_app-mutex); android_app-running = 1; pthread_cond_broadcast(&android_app-cond); pthread_mutex_unlock(&android_app-mutex); android_main(android_app); android_app_destroy(android_app); return NULL;/ -/ Native activity interaction (called from main thread)/ -static struct android_app* android_app_create(ANativeActivity* activity, void* savedState, size_t savedStateSize) struct android_app* android_app = (struct android_app*)malloc(sizeof(struct android_app); memset(android_app, 0, sizeof(struct android_app); android_app-activity = activity; pthread_mutex_init(&android_app-mutex, NULL); pthread_cond_init(&android_app-cond, NULL); if (savedState != NULL) android_app-savedState = malloc(savedStateSize); android_app-savedStateSize = savedStateSize; memcpy(android_app-savedState, savedState, savedStateSize); int msgpipe2; if (pipe(msgpipe) LOGE(could not create pipe: %s, strerror(errno); return NULL; android_app-msgread = msgpipe0; android_app-msgwrite = msgpipe1; pthread_attr_t attr; pthread_attr_init(&attr); pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED); pthread_create(&android_app-thread, &attr, android_app_entry, android_app); / Wait for thread to start. pthread_mutex_lock(&android_app-mutex); while (!android_app-running) pthread_cond_wait(&android_app-cond, &android_app-mutex); pthread_mutex_unlock(&android_app-mutex); return android_app;static void android_app_write_cmd(struct android_app* android_app, int8_t cmd) if (write(android_app-msgwrite, &cmd, sizeof(cmd) != sizeof(cmd) LOGE(Failure writing android_app cmd: %sn, strerror(errno); static void android_app_set_input(struct android_app* android_app, AInputQueue* inputQueue) pthread_mutex_lock(&android_app-mutex); android_app-pendingInputQueue = inputQueue; android_app_write_cmd(android_app, APP_CMD_INPUT_CHANGED); while (android_app-inputQueue != android_app-pendingInputQueue) pthread_cond_wait(&android_app-cond, &android_app-mutex); pthread_mutex_unlock(&android_app-mutex);static void android_app_set_window(struct android_app* android_app, ANativeWindow* window) pthread_mutex_lock(&android_app-mutex); if (android_app-pendingWindow != NULL) android_app_write_cmd(android_app, APP_CMD_TERM_WINDOW); android_app-pendingWindow = window; if (window != NULL) android_app_write_cmd(android_app, APP_CMD_INIT_WINDOW); while (android_app-window != android_app-pendingWindow) pthread_cond_wait(&android_app-cond, &android_app-mutex); pthread_mutex_unlock(&android_app-mutex);static void android_app_set_activity_state(struct android_app* android_app, int8_t cmd) pthread_mutex_lock(&android_app-mutex); android_app_write_cmd(android_app, cmd); while (android_app-activityState != cmd) pthread_cond_wait(&android_app-cond, &android_app-mutex); pthread_mutex_unlock(&android_app-mutex);static void android_app_free(struct android_app* android_app) pthread_mutex_lock(&android_app-mutex); android_app_write_cmd(android_app, APP_CMD_DESTROY); while (!android_app-destroyed) pthread_cond_wait(&android_app-cond, &android_app-mutex); pthread_mutex_unlock(&android_app-mutex); close(android_app-msgread); close(android_app-msgwrite); pthread_cond_destroy(&android_app-cond); pthread_mutex_destroy(&android_app-mutex); free(android_app);static void onDestroy(ANativeActivity* activity) LOGV(Destroy: %pn, activity); android_app_free(struct android_app*)activity-instance);static void onStart(ANativeActivity* activity) LOGV(Start: %pn, activity); android_app_set_activity_state(struct android_app*)activity-instance, APP_CMD_START);static void onResume(ANativeActivity* activity) LOGV(Resume: %pn, activity); android_app_set_activity_state(struct android_app*)activity-instance, APP_CMD_RESUME);static void* onSaveInstanceState(ANativeActivity* activity, size_t* outLen) struct android_app* android_app = (struct android_app*)activity-instance; void* savedState = NULL; LOGV(SaveInstanceState: %pn, activity); pthread_mutex_lock(&android_app-mutex); android_app-stateSaved = 0; android_app_write_cmd(android_app, APP_CMD_SAVE_STATE); while (!android_app-stateSaved) pthread_cond_wait(&android_app-cond, &android_app-mutex); if (android_app-savedState != NULL) savedState = android_app-savedState; *outLen = android_app-savedStateSize; android_app-savedState = NULL; android_app-savedStateSize = 0; pthread_mutex_unlock(&android_app-mutex); return savedState;static void onPause(ANativeActivity* activity) LOGV(Pause: %pn, activity); android_app_set_activity_state(struct android_app*)activity-instance, APP_CMD_PAUSE);static void onStop(ANativeActivity* activity) LOGV(Stop: %pn, activity); android_app_set_activity_state(struct android_app*)activity-instance, APP_CMD_STOP);static void onConfigurationChanged(ANativeActivity* activity) struct android_app* android_app = (struct android_app*)activity-instance; LOGV(ConfigurationChanged: %pn, activity); android_app_write_cmd(android_app, APP_CMD_CONFIG_CHANGED);static void onLowMemory(ANativeActivity* activity) struct android_app* android_app = (struct android_app*)activity-instance; LOGV(LowMemory: %pn, activity); android_app_write_cmd(android_app, APP_CMD_LOW_MEMORY);static void onWindowFocusChanged(ANativeActivity* activity, int focused) LOGV(WindowFocusChanged: %p - %dn, activity, focused); android_app_write_cmd(struct android_app*)activity-instance, focused ? APP_CMD_GAINED_FOCUS : APP_CMD_LOST_FOCUS);static void onNativeWindowCreated(ANativeActivity* activity, ANativeWindow* window) LOGV(NativeWindowCreated: %p - %pn, activity, window); android_app_set_window(struct android_app*)activity-instance, window);static void onNativeWindowDestroyed(ANativeActivity* activity, ANativeWindow* window) LOGV(NativeWindowDestroyed: %p - %pn, act