# HG changeset patch # User John Tsiombikas # Date 1431636416 -10800 # Node ID 7eb73ce46dd022f177a4482e0180ed4b90601a7c # Parent a4bf2687e4064d4a97d97f8d4ad9fed2f79ac9b8 fucking jni man ... wtf diff -r a4bf2687e406 -r 7eb73ce46dd0 src/android/MainActivity.java --- a/src/android/MainActivity.java Tue May 12 05:31:21 2015 +0300 +++ b/src/android/MainActivity.java Thu May 14 23:46:56 2015 +0300 @@ -4,7 +4,7 @@ import android.util.Log; public class MainActivity extends NativeActivity { - final public void foo(String s, int n) + public static void foo(String s, int n) { Log.i("3DPS", s + ": " + n); } diff -r a4bf2687e406 -r 7eb73ce46dd0 src/android/amain.c --- a/src/android/amain.c Tue May 12 05:31:21 2015 +0300 +++ b/src/android/amain.c Thu May 14 23:46:56 2015 +0300 @@ -1,7 +1,8 @@ #include #include #include -#include "android_native_app_glue.h" +#include +#include "native_glue.h" #include "logger.h" #include "game.h" #include "timer.h" @@ -21,6 +22,28 @@ static int win_width, win_height; static int init_done; +static JavaVM *jvm; +static JNIEnv *jni; +static jclass activity_class; + +static int call_foo(const char *s, int n) +{ + jmethodID foo_id; + jstring jstr; + int res; + + if(!(foo_id = (*jni)->GetStaticMethodID(jni, activity_class, "foo", "(Ljava/lang/String;I)V"))) { + fprintf(stderr, "static method foo not found\n"); + return -1; + } + + jstr = (*jni)->NewStringUTF(jni, s); + res = (*jni)->CallStaticIntMethod(jni, activity_class, foo_id, jstr, n); + (*jni)->DeleteLocalRef(jni, jstr); + + return res; +} + void android_main(struct android_app *app_ptr) { app_dummy(); @@ -31,6 +54,15 @@ start_logger(); + jvm = app->activity->vm; + if((*jvm)->AttachCurrentThread(jvm, &jni, 0) != 0) { + fprintf(stderr, "failed to attach native thread to Java VM\n"); + exit(1); + } + activity_class = app->activity_class; + + printf("JNI call returned: %d\n", call_foo("testing C->java jni calls", 42)); + for(;;) { int num_events; struct android_poll_source *pollsrc; @@ -42,6 +74,7 @@ } if(app->destroyRequested) { + (*jvm)->DetachCurrentThread(jvm); return; } diff -r a4bf2687e406 -r 7eb73ce46dd0 src/android/android_native_app_glue.c --- a/src/android/android_native_app_glue.c Tue May 12 05:31:21 2015 +0300 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,440 +0,0 @@ -/* - * 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 - * - * 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 - -#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) -#endif - -static 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 lang[2], country[2]; - 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), - lang[0], lang[1], country[0], country[1], - 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_CHANGED\n"); - 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_WINDOW\n"); - 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_WINDOW\n"); - 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=%d\n", 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_CHANGED\n"); - AConfiguration_fromAssetManager(android_app->config, - android_app->activity->assetManager); - print_cur_config(android_app); - break; - - case APP_CMD_DESTROY: - LOGV("APP_CMD_DESTROY\n"); - 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_WINDOW\n"); - 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_STATE\n"); - 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); - // Can't touch android_app object after this. -} - -static void process_input(struct android_app* app, struct android_poll_source* source) { - AInputEvent* event = NULL; - while (AInputQueue_getEvent(app->inputQueue, &event) >= 0) { - LOGV("New input event: type=%d\n", 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); - } -} - -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->cmdPollSource.process = process_cmd; - android_app->inputPollSource.id = LOOPER_ID_INPUT; - android_app->inputPollSource.app = android_app; - android_app->inputPollSource.process = 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 msgpipe[2]; - if (pipe(msgpipe)) { - LOGE("could not create pipe: %s", strerror(errno)); - return NULL; - } - android_app->msgread = msgpipe[0]; - android_app->msgwrite = msgpipe[1]; - - 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: %s\n", 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: %p\n", activity); - android_app_free((struct android_app*)activity->instance); -} - -static void onStart(ANativeActivity* activity) { - LOGV("Start: %p\n", activity); - android_app_set_activity_state((struct android_app*)activity->instance, APP_CMD_START); -} - -static void onResume(ANativeActivity* activity) { - LOGV("Resume: %p\n", 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: %p\n", 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: %p\n", activity); - android_app_set_activity_state((struct android_app*)activity->instance, APP_CMD_PAUSE); -} - -static void onStop(ANativeActivity* activity) { - LOGV("Stop: %p\n", 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: %p\n", 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: %p\n", activity); - android_app_write_cmd(android_app, APP_CMD_LOW_MEMORY); -} - -static void onWindowFocusChanged(ANativeActivity* activity, int focused) { - LOGV("WindowFocusChanged: %p -- %d\n", 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 -- %p\n", activity, window); - android_app_set_window((struct android_app*)activity->instance, window); -} - -static void onNativeWindowDestroyed(ANativeActivity* activity, ANativeWindow* window) { - LOGV("NativeWindowDestroyed: %p -- %p\n", activity, window); - android_app_set_window((struct android_app*)activity->instance, NULL); -} - -static void onInputQueueCreated(ANativeActivity* activity, AInputQueue* queue) { - LOGV("InputQueueCreated: %p -- %p\n", activity, queue); - android_app_set_input((struct android_app*)activity->instance, queue); -} - -static void onInputQueueDestroyed(ANativeActivity* activity, AInputQueue* queue) { - LOGV("InputQueueDestroyed: %p -- %p\n", activity, queue); - android_app_set_input((struct android_app*)activity->instance, NULL); -} - -void ANativeActivity_onCreate(ANativeActivity* activity, - void* savedState, size_t savedStateSize) { - LOGV("Creating: %p\n", activity); - activity->callbacks->onDestroy = onDestroy; - activity->callbacks->onStart = onStart; - activity->callbacks->onResume = onResume; - activity->callbacks->onSaveInstanceState = onSaveInstanceState; - activity->callbacks->onPause = onPause; - activity->callbacks->onStop = onStop; - activity->callbacks->onConfigurationChanged = onConfigurationChanged; - activity->callbacks->onLowMemory = onLowMemory; - activity->callbacks->onWindowFocusChanged = onWindowFocusChanged; - activity->callbacks->onNativeWindowCreated = onNativeWindowCreated; - activity->callbacks->onNativeWindowDestroyed = onNativeWindowDestroyed; - activity->callbacks->onInputQueueCreated = onInputQueueCreated; - activity->callbacks->onInputQueueDestroyed = onInputQueueDestroyed; - - activity->instance = android_app_create(activity, savedState, savedStateSize); -} diff -r a4bf2687e406 -r 7eb73ce46dd0 src/android/android_native_app_glue.h --- a/src/android/android_native_app_glue.h Tue May 12 05:31:21 2015 +0300 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,349 +0,0 @@ -/* - * 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 - * - * 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. - * - */ - -#ifndef _ANDROID_NATIVE_APP_GLUE_H -#define _ANDROID_NATIVE_APP_GLUE_H - -#include -#include -#include - -#include -#include -#include - -#ifdef __cplusplus -extern "C" { -#endif - -/** - * The native activity interface provided by - * is based on a set of application-provided callbacks that will be called - * by the Activity's main thread when certain events occur. - * - * This means that each one of this callbacks _should_ _not_ block, or they - * risk having the system force-close the application. This programming - * model is direct, lightweight, but constraining. - * - * The 'android_native_app_glue' static library is used to provide a different - * execution model where the application can implement its own main event - * loop in a different thread instead. Here's how it works: - * - * 1/ The application must provide a function named "android_main()" that - * will be called when the activity is created, in a new thread that is - * distinct from the activity's main thread. - * - * 2/ android_main() receives a pointer to a valid "android_app" structure - * that contains references to other important objects, e.g. the - * ANativeActivity obejct instance the application is running in. - * - * 3/ the "android_app" object holds an ALooper instance that already - * listens to two important things: - * - * - activity lifecycle events (e.g. "pause", "resume"). See APP_CMD_XXX - * declarations below. - * - * - input events coming from the AInputQueue attached to the activity. - * - * Each of these correspond to an ALooper identifier returned by - * ALooper_pollOnce with values of LOOPER_ID_MAIN and LOOPER_ID_INPUT, - * respectively. - * - * Your application can use the same ALooper to listen to additional - * file-descriptors. They can either be callback based, or with return - * identifiers starting with LOOPER_ID_USER. - * - * 4/ Whenever you receive a LOOPER_ID_MAIN or LOOPER_ID_INPUT event, - * the returned data will point to an android_poll_source structure. You - * can call the process() function on it, and fill in android_app->onAppCmd - * and android_app->onInputEvent to be called for your own processing - * of the event. - * - * Alternatively, you can call the low-level functions to read and process - * the data directly... look at the process_cmd() and process_input() - * implementations in the glue to see how to do this. - * - * See the sample named "native-activity" that comes with the NDK with a - * full usage example. Also look at the JavaDoc of NativeActivity. - */ - -struct android_app; - -/** - * Data associated with an ALooper fd that will be returned as the "outData" - * when that source has data ready. - */ -struct android_poll_source { - // The identifier of this source. May be LOOPER_ID_MAIN or - // LOOPER_ID_INPUT. - int32_t id; - - // The android_app this ident is associated with. - struct android_app* app; - - // Function to call to perform the standard processing of data from - // this source. - void (*process)(struct android_app* app, struct android_poll_source* source); -}; - -/** - * This is the interface for the standard glue code of a threaded - * application. In this model, the application's code is running - * in its own thread separate from the main thread of the process. - * It is not required that this thread be associated with the Java - * VM, although it will need to be in order to make JNI calls any - * Java objects. - */ -struct android_app { - // The application can place a pointer to its own state object - // here if it likes. - void* userData; - - // Fill this in with the function to process main app commands (APP_CMD_*) - void (*onAppCmd)(struct android_app* app, int32_t cmd); - - // Fill this in with the function to process input events. At this point - // the event has already been pre-dispatched, and it will be finished upon - // return. Return 1 if you have handled the event, 0 for any default - // dispatching. - int32_t (*onInputEvent)(struct android_app* app, AInputEvent* event); - - // The ANativeActivity object instance that this app is running in. - ANativeActivity* activity; - - // The current configuration the app is running in. - AConfiguration* config; - - // This is the last instance's saved state, as provided at creation time. - // It is NULL if there was no state. You can use this as you need; the - // memory will remain around until you call android_app_exec_cmd() for - // APP_CMD_RESUME, at which point it will be freed and savedState set to NULL. - // These variables should only be changed when processing a APP_CMD_SAVE_STATE, - // at which point they will be initialized to NULL and you can malloc your - // state and place the information here. In that case the memory will be - // freed for you later. - void* savedState; - size_t savedStateSize; - - // The ALooper associated with the app's thread. - ALooper* looper; - - // When non-NULL, this is the input queue from which the app will - // receive user input events. - AInputQueue* inputQueue; - - // When non-NULL, this is the window surface that the app can draw in. - ANativeWindow* window; - - // Current content rectangle of the window; this is the area where the - // window's content should be placed to be seen by the user. - ARect contentRect; - - // Current state of the app's activity. May be either APP_CMD_START, - // APP_CMD_RESUME, APP_CMD_PAUSE, or APP_CMD_STOP; see below. - int activityState; - - // This is non-zero when the application's NativeActivity is being - // destroyed and waiting for the app thread to complete. - int destroyRequested; - - // ------------------------------------------------- - // Below are "private" implementation of the glue code. - - pthread_mutex_t mutex; - pthread_cond_t cond; - - int msgread; - int msgwrite; - - pthread_t thread; - - struct android_poll_source cmdPollSource; - struct android_poll_source inputPollSource; - - int running; - int stateSaved; - int destroyed; - int redrawNeeded; - AInputQueue* pendingInputQueue; - ANativeWindow* pendingWindow; - ARect pendingContentRect; -}; - -enum { - /** - * Looper data ID of commands coming from the app's main thread, which - * is returned as an identifier from ALooper_pollOnce(). The data for this - * identifier is a pointer to an android_poll_source structure. - * These can be retrieved and processed with android_app_read_cmd() - * and android_app_exec_cmd(). - */ - LOOPER_ID_MAIN = 1, - - /** - * Looper data ID of events coming from the AInputQueue of the - * application's window, which is returned as an identifier from - * ALooper_pollOnce(). The data for this identifier is a pointer to an - * android_poll_source structure. These can be read via the inputQueue - * object of android_app. - */ - LOOPER_ID_INPUT = 2, - - /** - * Start of user-defined ALooper identifiers. - */ - LOOPER_ID_USER = 3, -}; - -enum { - /** - * Command from main thread: the AInputQueue has changed. Upon processing - * this command, android_app->inputQueue will be updated to the new queue - * (or NULL). - */ - APP_CMD_INPUT_CHANGED, - - /** - * Command from main thread: a new ANativeWindow is ready for use. Upon - * receiving this command, android_app->window will contain the new window - * surface. - */ - APP_CMD_INIT_WINDOW, - - /** - * Command from main thread: the existing ANativeWindow needs to be - * terminated. Upon receiving this command, android_app->window still - * contains the existing window; after calling android_app_exec_cmd - * it will be set to NULL. - */ - APP_CMD_TERM_WINDOW, - - /** - * Command from main thread: the current ANativeWindow has been resized. - * Please redraw with its new size. - */ - APP_CMD_WINDOW_RESIZED, - - /** - * Command from main thread: the system needs that the current ANativeWindow - * be redrawn. You should redraw the window before handing this to - * android_app_exec_cmd() in order to avoid transient drawing glitches. - */ - APP_CMD_WINDOW_REDRAW_NEEDED, - - /** - * Command from main thread: the content area of the window has changed, - * such as from the soft input window being shown or hidden. You can - * find the new content rect in android_app::contentRect. - */ - APP_CMD_CONTENT_RECT_CHANGED, - - /** - * Command from main thread: the app's activity window has gained - * input focus. - */ - APP_CMD_GAINED_FOCUS, - - /** - * Command from main thread: the app's activity window has lost - * input focus. - */ - APP_CMD_LOST_FOCUS, - - /** - * Command from main thread: the current device configuration has changed. - */ - APP_CMD_CONFIG_CHANGED, - - /** - * Command from main thread: the system is running low on memory. - * Try to reduce your memory use. - */ - APP_CMD_LOW_MEMORY, - - /** - * Command from main thread: the app's activity has been started. - */ - APP_CMD_START, - - /** - * Command from main thread: the app's activity has been resumed. - */ - APP_CMD_RESUME, - - /** - * Command from main thread: the app should generate a new saved state - * for itself, to restore from later if needed. If you have saved state, - * allocate it with malloc and place it in android_app.savedState with - * the size in android_app.savedStateSize. The will be freed for you - * later. - */ - APP_CMD_SAVE_STATE, - - /** - * Command from main thread: the app's activity has been paused. - */ - APP_CMD_PAUSE, - - /** - * Command from main thread: the app's activity has been stopped. - */ - APP_CMD_STOP, - - /** - * Command from main thread: the app's activity is being destroyed, - * and waiting for the app thread to clean up and exit before proceeding. - */ - APP_CMD_DESTROY, -}; - -/** - * Call when ALooper_pollAll() returns LOOPER_ID_MAIN, reading the next - * app command message. - */ -int8_t android_app_read_cmd(struct android_app* android_app); - -/** - * Call with the command returned by android_app_read_cmd() to do the - * initial pre-processing of the given command. You can perform your own - * actions for the command after calling this function. - */ -void android_app_pre_exec_cmd(struct android_app* android_app, int8_t cmd); - -/** - * Call with the command returned by android_app_read_cmd() to do the - * final post-processing of the given command. You must have done your own - * actions for the command before calling this function. - */ -void android_app_post_exec_cmd(struct android_app* android_app, int8_t cmd); - -/** - * Dummy function you can call to ensure glue code isn't stripped. - */ -void app_dummy(); - -/** - * This is the function that application code must implement, representing - * the main entry to the app. - */ -extern void android_main(struct android_app* app); - -#ifdef __cplusplus -} -#endif - -#endif /* _ANDROID_NATIVE_APP_GLUE_H */ diff -r a4bf2687e406 -r 7eb73ce46dd0 src/android/native_glue.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/android/native_glue.c Thu May 14 23:46:56 2015 +0300 @@ -0,0 +1,457 @@ +/* + * 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 + * + * 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 + +#include +#include +#include +#include + +#include "native_glue.h" +#include + +#define ACTIVITY_NAME "com/mutantstargoat/photoshoot3d/MainActivity" + +#define LOGI(...) ((void)__android_log_print(ANDROID_LOG_INFO, APP_NAME, __VA_ARGS__)) +#define LOGE(...) ((void)__android_log_print(ANDROID_LOG_ERROR, APP_NAME, __VA_ARGS__)) + +/* For debug builds, always enable the debug traces in this library */ +#ifndef NDEBUG +# define LOGV(...) ((void)__android_log_print(ANDROID_LOG_VERBOSE, APP_NAME, __VA_ARGS__)) +#else +# define LOGV(...) ((void)0) +#endif + +static 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 lang[2], country[2]; + 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), + lang[0], lang[1], country[0], country[1], + 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_CHANGED\n"); + 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_WINDOW\n"); + 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_WINDOW\n"); + 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=%d\n", 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_CHANGED\n"); + AConfiguration_fromAssetManager(android_app->config, + android_app->activity->assetManager); + print_cur_config(android_app); + break; + + case APP_CMD_DESTROY: + LOGV("APP_CMD_DESTROY\n"); + 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_WINDOW\n"); + 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_STATE\n"); + 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); + // Can't touch android_app object after this. +} + +static void process_input(struct android_app* app, struct android_poll_source* source) { + AInputEvent* event = NULL; + while (AInputQueue_getEvent(app->inputQueue, &event) >= 0) { + LOGV("New input event: type=%d\n", 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); + } +} + +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->cmdPollSource.process = process_cmd; + android_app->inputPollSource.id = LOOPER_ID_INPUT; + android_app->inputPollSource.app = android_app; + android_app->inputPollSource.process = 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) { + JNIEnv *jni = activity->env; + struct android_app* android_app = malloc(sizeof(struct android_app)); + memset(android_app, 0, sizeof(struct android_app)); + android_app->activity = activity; + + { + jclass foo = (*jni)->FindClass(jni, "java/lang/String"); + if(!foo) { + LOGE("String class not found!!!!!!\n"); + } else { + LOGE("Found String class!!!!!!\n"); + } + } + + if(!(android_app->activity_class = (*jni)->FindClass(jni, ACTIVITY_NAME))) { + LOGE("could not find activity: " ACTIVITY_NAME); + return 0; + } + + 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 msgpipe[2]; + if (pipe(msgpipe)) { + LOGE("could not create pipe: %s", strerror(errno)); + return NULL; + } + android_app->msgread = msgpipe[0]; + android_app->msgwrite = msgpipe[1]; + + 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: %s\n", 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: %p\n", activity); + android_app_free((struct android_app*)activity->instance); +} + +static void onStart(ANativeActivity* activity) { + LOGV("Start: %p\n", activity); + android_app_set_activity_state((struct android_app*)activity->instance, APP_CMD_START); +} + +static void onResume(ANativeActivity* activity) { + LOGV("Resume: %p\n", 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: %p\n", 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: %p\n", activity); + android_app_set_activity_state((struct android_app*)activity->instance, APP_CMD_PAUSE); +} + +static void onStop(ANativeActivity* activity) { + LOGV("Stop: %p\n", 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: %p\n", 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: %p\n", activity); + android_app_write_cmd(android_app, APP_CMD_LOW_MEMORY); +} + +static void onWindowFocusChanged(ANativeActivity* activity, int focused) { + LOGV("WindowFocusChanged: %p -- %d\n", 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 -- %p\n", activity, window); + android_app_set_window((struct android_app*)activity->instance, window); +} + +static void onNativeWindowDestroyed(ANativeActivity* activity, ANativeWindow* window) { + LOGV("NativeWindowDestroyed: %p -- %p\n", activity, window); + android_app_set_window((struct android_app*)activity->instance, NULL); +} + +static void onInputQueueCreated(ANativeActivity* activity, AInputQueue* queue) { + LOGV("InputQueueCreated: %p -- %p\n", activity, queue); + android_app_set_input((struct android_app*)activity->instance, queue); +} + +static void onInputQueueDestroyed(ANativeActivity* activity, AInputQueue* queue) { + LOGV("InputQueueDestroyed: %p -- %p\n", activity, queue); + android_app_set_input((struct android_app*)activity->instance, NULL); +} + +void ANativeActivity_onCreate(ANativeActivity* activity, + void* savedState, size_t savedStateSize) { + LOGV("Creating: %p\n", activity); + activity->callbacks->onDestroy = onDestroy; + activity->callbacks->onStart = onStart; + activity->callbacks->onResume = onResume; + activity->callbacks->onSaveInstanceState = onSaveInstanceState; + activity->callbacks->onPause = onPause; + activity->callbacks->onStop = onStop; + activity->callbacks->onConfigurationChanged = onConfigurationChanged; + activity->callbacks->onLowMemory = onLowMemory; + activity->callbacks->onWindowFocusChanged = onWindowFocusChanged; + activity->callbacks->onNativeWindowCreated = onNativeWindowCreated; + activity->callbacks->onNativeWindowDestroyed = onNativeWindowDestroyed; + activity->callbacks->onInputQueueCreated = onInputQueueCreated; + activity->callbacks->onInputQueueDestroyed = onInputQueueDestroyed; + + activity->instance = android_app_create(activity, savedState, savedStateSize); +} diff -r a4bf2687e406 -r 7eb73ce46dd0 src/android/native_glue.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/android/native_glue.h Thu May 14 23:46:56 2015 +0300 @@ -0,0 +1,352 @@ +/* + * 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 + * + * 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. + * + */ + +#ifndef _ANDROID_NATIVE_APP_GLUE_H +#define _ANDROID_NATIVE_APP_GLUE_H + +#include +#include +#include + +#include +#include +#include + +#ifdef __cplusplus +extern "C" { +#endif + +/** + * The native activity interface provided by + * is based on a set of application-provided callbacks that will be called + * by the Activity's main thread when certain events occur. + * + * This means that each one of this callbacks _should_ _not_ block, or they + * risk having the system force-close the application. This programming + * model is direct, lightweight, but constraining. + * + * The 'android_native_app_glue' static library is used to provide a different + * execution model where the application can implement its own main event + * loop in a different thread instead. Here's how it works: + * + * 1/ The application must provide a function named "android_main()" that + * will be called when the activity is created, in a new thread that is + * distinct from the activity's main thread. + * + * 2/ android_main() receives a pointer to a valid "android_app" structure + * that contains references to other important objects, e.g. the + * ANativeActivity obejct instance the application is running in. + * + * 3/ the "android_app" object holds an ALooper instance that already + * listens to two important things: + * + * - activity lifecycle events (e.g. "pause", "resume"). See APP_CMD_XXX + * declarations below. + * + * - input events coming from the AInputQueue attached to the activity. + * + * Each of these correspond to an ALooper identifier returned by + * ALooper_pollOnce with values of LOOPER_ID_MAIN and LOOPER_ID_INPUT, + * respectively. + * + * Your application can use the same ALooper to listen to additional + * file-descriptors. They can either be callback based, or with return + * identifiers starting with LOOPER_ID_USER. + * + * 4/ Whenever you receive a LOOPER_ID_MAIN or LOOPER_ID_INPUT event, + * the returned data will point to an android_poll_source structure. You + * can call the process() function on it, and fill in android_app->onAppCmd + * and android_app->onInputEvent to be called for your own processing + * of the event. + * + * Alternatively, you can call the low-level functions to read and process + * the data directly... look at the process_cmd() and process_input() + * implementations in the glue to see how to do this. + * + * See the sample named "native-activity" that comes with the NDK with a + * full usage example. Also look at the JavaDoc of NativeActivity. + */ + +struct android_app; + +/** + * Data associated with an ALooper fd that will be returned as the "outData" + * when that source has data ready. + */ +struct android_poll_source { + // The identifier of this source. May be LOOPER_ID_MAIN or + // LOOPER_ID_INPUT. + int32_t id; + + // The android_app this ident is associated with. + struct android_app* app; + + // Function to call to perform the standard processing of data from + // this source. + void (*process)(struct android_app* app, struct android_poll_source* source); +}; + +/** + * This is the interface for the standard glue code of a threaded + * application. In this model, the application's code is running + * in its own thread separate from the main thread of the process. + * It is not required that this thread be associated with the Java + * VM, although it will need to be in order to make JNI calls any + * Java objects. + */ +struct android_app { + // The application can place a pointer to its own state object + // here if it likes. + void* userData; + + // Fill this in with the function to process main app commands (APP_CMD_*) + void (*onAppCmd)(struct android_app* app, int32_t cmd); + + // Fill this in with the function to process input events. At this point + // the event has already been pre-dispatched, and it will be finished upon + // return. Return 1 if you have handled the event, 0 for any default + // dispatching. + int32_t (*onInputEvent)(struct android_app* app, AInputEvent* event); + + // The ANativeActivity object instance that this app is running in. + ANativeActivity* activity; + + // The current configuration the app is running in. + AConfiguration* config; + + // This is the last instance's saved state, as provided at creation time. + // It is NULL if there was no state. You can use this as you need; the + // memory will remain around until you call android_app_exec_cmd() for + // APP_CMD_RESUME, at which point it will be freed and savedState set to NULL. + // These variables should only be changed when processing a APP_CMD_SAVE_STATE, + // at which point they will be initialized to NULL and you can malloc your + // state and place the information here. In that case the memory will be + // freed for you later. + void* savedState; + size_t savedStateSize; + + // The ALooper associated with the app's thread. + ALooper* looper; + + // When non-NULL, this is the input queue from which the app will + // receive user input events. + AInputQueue* inputQueue; + + // When non-NULL, this is the window surface that the app can draw in. + ANativeWindow* window; + + // Current content rectangle of the window; this is the area where the + // window's content should be placed to be seen by the user. + ARect contentRect; + + // Current state of the app's activity. May be either APP_CMD_START, + // APP_CMD_RESUME, APP_CMD_PAUSE, or APP_CMD_STOP; see below. + int activityState; + + // This is non-zero when the application's NativeActivity is being + // destroyed and waiting for the app thread to complete. + int destroyRequested; + + // ------------------------------------------------- + // Below are "private" implementation of the glue code. + + pthread_mutex_t mutex; + pthread_cond_t cond; + + int msgread; + int msgwrite; + + pthread_t thread; + + struct android_poll_source cmdPollSource; + struct android_poll_source inputPollSource; + + int running; + int stateSaved; + int destroyed; + int redrawNeeded; + AInputQueue* pendingInputQueue; + ANativeWindow* pendingWindow; + ARect pendingContentRect; + + // MainActivity class + jclass activity_class; +}; + +enum { + /** + * Looper data ID of commands coming from the app's main thread, which + * is returned as an identifier from ALooper_pollOnce(). The data for this + * identifier is a pointer to an android_poll_source structure. + * These can be retrieved and processed with android_app_read_cmd() + * and android_app_exec_cmd(). + */ + LOOPER_ID_MAIN = 1, + + /** + * Looper data ID of events coming from the AInputQueue of the + * application's window, which is returned as an identifier from + * ALooper_pollOnce(). The data for this identifier is a pointer to an + * android_poll_source structure. These can be read via the inputQueue + * object of android_app. + */ + LOOPER_ID_INPUT = 2, + + /** + * Start of user-defined ALooper identifiers. + */ + LOOPER_ID_USER = 3, +}; + +enum { + /** + * Command from main thread: the AInputQueue has changed. Upon processing + * this command, android_app->inputQueue will be updated to the new queue + * (or NULL). + */ + APP_CMD_INPUT_CHANGED, + + /** + * Command from main thread: a new ANativeWindow is ready for use. Upon + * receiving this command, android_app->window will contain the new window + * surface. + */ + APP_CMD_INIT_WINDOW, + + /** + * Command from main thread: the existing ANativeWindow needs to be + * terminated. Upon receiving this command, android_app->window still + * contains the existing window; after calling android_app_exec_cmd + * it will be set to NULL. + */ + APP_CMD_TERM_WINDOW, + + /** + * Command from main thread: the current ANativeWindow has been resized. + * Please redraw with its new size. + */ + APP_CMD_WINDOW_RESIZED, + + /** + * Command from main thread: the system needs that the current ANativeWindow + * be redrawn. You should redraw the window before handing this to + * android_app_exec_cmd() in order to avoid transient drawing glitches. + */ + APP_CMD_WINDOW_REDRAW_NEEDED, + + /** + * Command from main thread: the content area of the window has changed, + * such as from the soft input window being shown or hidden. You can + * find the new content rect in android_app::contentRect. + */ + APP_CMD_CONTENT_RECT_CHANGED, + + /** + * Command from main thread: the app's activity window has gained + * input focus. + */ + APP_CMD_GAINED_FOCUS, + + /** + * Command from main thread: the app's activity window has lost + * input focus. + */ + APP_CMD_LOST_FOCUS, + + /** + * Command from main thread: the current device configuration has changed. + */ + APP_CMD_CONFIG_CHANGED, + + /** + * Command from main thread: the system is running low on memory. + * Try to reduce your memory use. + */ + APP_CMD_LOW_MEMORY, + + /** + * Command from main thread: the app's activity has been started. + */ + APP_CMD_START, + + /** + * Command from main thread: the app's activity has been resumed. + */ + APP_CMD_RESUME, + + /** + * Command from main thread: the app should generate a new saved state + * for itself, to restore from later if needed. If you have saved state, + * allocate it with malloc and place it in android_app.savedState with + * the size in android_app.savedStateSize. The will be freed for you + * later. + */ + APP_CMD_SAVE_STATE, + + /** + * Command from main thread: the app's activity has been paused. + */ + APP_CMD_PAUSE, + + /** + * Command from main thread: the app's activity has been stopped. + */ + APP_CMD_STOP, + + /** + * Command from main thread: the app's activity is being destroyed, + * and waiting for the app thread to clean up and exit before proceeding. + */ + APP_CMD_DESTROY, +}; + +/** + * Call when ALooper_pollAll() returns LOOPER_ID_MAIN, reading the next + * app command message. + */ +int8_t android_app_read_cmd(struct android_app* android_app); + +/** + * Call with the command returned by android_app_read_cmd() to do the + * initial pre-processing of the given command. You can perform your own + * actions for the command after calling this function. + */ +void android_app_pre_exec_cmd(struct android_app* android_app, int8_t cmd); + +/** + * Call with the command returned by android_app_read_cmd() to do the + * final post-processing of the given command. You must have done your own + * actions for the command before calling this function. + */ +void android_app_post_exec_cmd(struct android_app* android_app, int8_t cmd); + +/** + * Dummy function you can call to ensure glue code isn't stripped. + */ +void app_dummy(); + +/** + * This is the function that application code must implement, representing + * the main entry to the app. + */ +extern void android_main(struct android_app* app); + +#ifdef __cplusplus +} +#endif + +#endif /* _ANDROID_NATIVE_APP_GLUE_H */