| /* |
| * 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. |
| */ |
| |
| #define LOG_TAG "NativeActivity" |
| #include <utils/Log.h> |
| |
| #include <poll.h> |
| #include <dlfcn.h> |
| |
| #include <android_runtime/AndroidRuntime.h> |
| #include <android/native_activity.h> |
| #include <ui/InputTransport.h> |
| #include <utils/PollLoop.h> |
| |
| #include "JNIHelp.h" |
| #include "android_os_MessageQueue.h" |
| #include "android_view_InputChannel.h" |
| #include "android_view_KeyEvent.h" |
| |
| namespace android |
| { |
| |
| static struct { |
| jclass clazz; |
| |
| jmethodID dispatchUnhandledKeyEvent; |
| } gNativeActivityClassInfo; |
| |
| struct MyInputQueue : AInputQueue { |
| explicit MyInputQueue(const android::sp<android::InputChannel>& channel, int workWrite) |
| : AInputQueue(channel), mWorkWrite(workWrite) { |
| } |
| |
| virtual void doDefaultKey(android::KeyEvent* keyEvent) { |
| mLock.lock(); |
| LOGI("Default key: pending=%d write=%d\n", mPendingKeys.size(), mWorkWrite); |
| if (mPendingKeys.size() <= 0 && mWorkWrite >= 0) { |
| int8_t cmd = 1; |
| write(mWorkWrite, &cmd, sizeof(cmd)); |
| } |
| mPendingKeys.add(keyEvent); |
| mLock.unlock(); |
| } |
| |
| KeyEvent* getNextEvent() { |
| KeyEvent* event = NULL; |
| |
| mLock.lock(); |
| if (mPendingKeys.size() > 0) { |
| event = mPendingKeys[0]; |
| mPendingKeys.removeAt(0); |
| } |
| mLock.unlock(); |
| |
| return event; |
| } |
| |
| int mWorkWrite; |
| |
| Mutex mLock; |
| Vector<KeyEvent*> mPendingKeys; |
| }; |
| |
| struct NativeCode { |
| NativeCode(void* _dlhandle, ANativeActivity_createFunc* _createFunc) { |
| memset(&activity, sizeof(activity), 0); |
| memset(&callbacks, sizeof(callbacks), 0); |
| dlhandle = _dlhandle; |
| createActivityFunc = _createFunc; |
| surface = NULL; |
| inputChannel = NULL; |
| nativeInputQueue = NULL; |
| mainWorkRead = mainWorkWrite = -1; |
| } |
| |
| ~NativeCode() { |
| if (activity.env != NULL && activity.clazz != NULL) { |
| activity.env->DeleteGlobalRef(activity.clazz); |
| } |
| if (pollLoop != NULL && mainWorkRead >= 0) { |
| pollLoop->removeCallback(mainWorkRead); |
| } |
| if (nativeInputQueue != NULL) { |
| nativeInputQueue->mWorkWrite = -1; |
| } |
| setSurface(NULL); |
| setInputChannel(NULL); |
| if (callbacks.onDestroy != NULL) { |
| callbacks.onDestroy(&activity); |
| } |
| if (mainWorkRead >= 0) close(mainWorkRead); |
| if (mainWorkWrite >= 0) close(mainWorkWrite); |
| if (dlhandle != NULL) { |
| dlclose(dlhandle); |
| } |
| } |
| |
| void setSurface(jobject _surface) { |
| if (surface != NULL) { |
| activity.env->DeleteGlobalRef(surface); |
| } |
| if (_surface != NULL) { |
| surface = activity.env->NewGlobalRef(_surface); |
| } else { |
| surface = NULL; |
| } |
| } |
| |
| status_t setInputChannel(jobject _channel) { |
| if (inputChannel != NULL) { |
| delete nativeInputQueue; |
| activity.env->DeleteGlobalRef(inputChannel); |
| } |
| inputChannel = NULL; |
| nativeInputQueue = NULL; |
| if (_channel != NULL) { |
| inputChannel = activity.env->NewGlobalRef(_channel); |
| sp<InputChannel> ic = |
| android_view_InputChannel_getInputChannel(activity.env, _channel); |
| if (ic != NULL) { |
| nativeInputQueue = new MyInputQueue(ic, mainWorkWrite); |
| if (nativeInputQueue->getConsumer().initialize() != android::OK) { |
| delete nativeInputQueue; |
| nativeInputQueue = NULL; |
| return UNKNOWN_ERROR; |
| } |
| } else { |
| return UNKNOWN_ERROR; |
| } |
| } |
| return OK; |
| } |
| |
| ANativeActivity activity; |
| ANativeActivityCallbacks callbacks; |
| |
| void* dlhandle; |
| ANativeActivity_createFunc* createActivityFunc; |
| |
| jobject surface; |
| jobject inputChannel; |
| struct MyInputQueue* nativeInputQueue; |
| |
| // These are used to wake up the main thread to process work. |
| int mainWorkRead; |
| int mainWorkWrite; |
| sp<PollLoop> pollLoop; |
| }; |
| |
| static bool mainWorkCallback(int fd, int events, void* data) { |
| NativeCode* code = (NativeCode*)data; |
| if ((events & POLLIN) != 0) { |
| KeyEvent* keyEvent; |
| while ((keyEvent=code->nativeInputQueue->getNextEvent()) != NULL) { |
| jobject inputEventObj = android_view_KeyEvent_fromNative( |
| code->activity.env, keyEvent); |
| code->activity.env->CallVoidMethod(code->activity.clazz, |
| gNativeActivityClassInfo.dispatchUnhandledKeyEvent, inputEventObj); |
| int32_t res = code->nativeInputQueue->getConsumer().sendFinishedSignal(); |
| if (res != OK) { |
| LOGW("Failed to send finished signal on channel '%s'. status=%d", |
| code->nativeInputQueue->getConsumer().getChannel()->getName().string(), res); |
| } |
| } |
| } |
| |
| return true; |
| } |
| |
| static jint |
| loadNativeCode_native(JNIEnv* env, jobject clazz, jstring path, jobject messageQueue) |
| { |
| const char* pathStr = env->GetStringUTFChars(path, NULL); |
| NativeCode* code = NULL; |
| |
| void* handle = dlopen(pathStr, RTLD_LAZY); |
| |
| env->ReleaseStringUTFChars(path, pathStr); |
| |
| if (handle != NULL) { |
| code = new NativeCode(handle, (ANativeActivity_createFunc*) |
| dlsym(handle, "ANativeActivity_onCreate")); |
| if (code->createActivityFunc == NULL) { |
| LOGW("ANativeActivity_onCreate not found"); |
| delete code; |
| return 0; |
| } |
| |
| code->pollLoop = android_os_MessageQueue_getPollLoop(env, messageQueue); |
| if (code->pollLoop == NULL) { |
| LOGW("Unable to retrieve MessageQueue's PollLoop"); |
| delete code; |
| return 0; |
| } |
| |
| int msgpipe[2]; |
| if (pipe(msgpipe)) { |
| LOGW("could not create pipe: %s", strerror(errno)); |
| delete code; |
| return 0; |
| } |
| code->mainWorkRead = msgpipe[0]; |
| code->mainWorkWrite = msgpipe[1]; |
| code->pollLoop->setCallback(code->mainWorkRead, POLLIN, mainWorkCallback, code); |
| |
| code->activity.callbacks = &code->callbacks; |
| if (env->GetJavaVM(&code->activity.vm) < 0) { |
| LOGW("NativeActivity GetJavaVM failed"); |
| delete code; |
| return 0; |
| } |
| code->activity.env = env; |
| code->activity.clazz = env->NewGlobalRef(clazz); |
| code->createActivityFunc(&code->activity, NULL, 0); |
| } |
| |
| return (jint)code; |
| } |
| |
| static void |
| unloadNativeCode_native(JNIEnv* env, jobject clazz, jint handle) |
| { |
| if (handle != 0) { |
| NativeCode* code = (NativeCode*)handle; |
| delete code; |
| } |
| } |
| |
| static void |
| onStart_native(JNIEnv* env, jobject clazz, jint handle) |
| { |
| if (handle != 0) { |
| NativeCode* code = (NativeCode*)handle; |
| if (code->callbacks.onStart != NULL) { |
| code->callbacks.onStart(&code->activity); |
| } |
| } |
| } |
| |
| static void |
| onResume_native(JNIEnv* env, jobject clazz, jint handle) |
| { |
| if (handle != 0) { |
| NativeCode* code = (NativeCode*)handle; |
| if (code->callbacks.onResume != NULL) { |
| code->callbacks.onResume(&code->activity); |
| } |
| } |
| } |
| |
| static void |
| onSaveInstanceState_native(JNIEnv* env, jobject clazz, jint handle) |
| { |
| if (handle != 0) { |
| NativeCode* code = (NativeCode*)handle; |
| if (code->callbacks.onSaveInstanceState != NULL) { |
| size_t len = 0; |
| code->callbacks.onSaveInstanceState(&code->activity, &len); |
| } |
| } |
| } |
| |
| static void |
| onPause_native(JNIEnv* env, jobject clazz, jint handle) |
| { |
| if (handle != 0) { |
| NativeCode* code = (NativeCode*)handle; |
| if (code->callbacks.onPause != NULL) { |
| code->callbacks.onPause(&code->activity); |
| } |
| } |
| } |
| |
| static void |
| onStop_native(JNIEnv* env, jobject clazz, jint handle) |
| { |
| if (handle != 0) { |
| NativeCode* code = (NativeCode*)handle; |
| if (code->callbacks.onStop != NULL) { |
| code->callbacks.onStop(&code->activity); |
| } |
| } |
| } |
| |
| static void |
| onLowMemory_native(JNIEnv* env, jobject clazz, jint handle) |
| { |
| if (handle != 0) { |
| NativeCode* code = (NativeCode*)handle; |
| if (code->callbacks.onLowMemory != NULL) { |
| code->callbacks.onLowMemory(&code->activity); |
| } |
| } |
| } |
| |
| static void |
| onWindowFocusChanged_native(JNIEnv* env, jobject clazz, jint handle, jboolean focused) |
| { |
| if (handle != 0) { |
| NativeCode* code = (NativeCode*)handle; |
| if (code->callbacks.onWindowFocusChanged != NULL) { |
| code->callbacks.onWindowFocusChanged(&code->activity, focused ? 1 : 0); |
| } |
| } |
| } |
| |
| static void |
| onSurfaceCreated_native(JNIEnv* env, jobject clazz, jint handle, jobject surface) |
| { |
| if (handle != 0) { |
| NativeCode* code = (NativeCode*)handle; |
| code->setSurface(surface); |
| if (code->callbacks.onSurfaceCreated != NULL) { |
| code->callbacks.onSurfaceCreated(&code->activity, |
| (ASurfaceHolder*)code->surface); |
| } |
| } |
| } |
| |
| static void |
| onSurfaceChanged_native(JNIEnv* env, jobject clazz, jint handle, jobject surface, |
| jint format, jint width, jint height) |
| { |
| if (handle != 0) { |
| NativeCode* code = (NativeCode*)handle; |
| if (code->surface != NULL && code->callbacks.onSurfaceChanged != NULL) { |
| code->callbacks.onSurfaceChanged(&code->activity, |
| (ASurfaceHolder*)code->surface, format, width, height); |
| } |
| } |
| } |
| |
| static void |
| onSurfaceDestroyed_native(JNIEnv* env, jobject clazz, jint handle, jobject surface) |
| { |
| if (handle != 0) { |
| NativeCode* code = (NativeCode*)handle; |
| if (code->surface != NULL && code->callbacks.onSurfaceDestroyed != NULL) { |
| code->callbacks.onSurfaceDestroyed(&code->activity, |
| (ASurfaceHolder*)code->surface); |
| } |
| code->setSurface(NULL); |
| } |
| } |
| |
| static void |
| onInputChannelCreated_native(JNIEnv* env, jobject clazz, jint handle, jobject channel) |
| { |
| if (handle != 0) { |
| NativeCode* code = (NativeCode*)handle; |
| status_t err = code->setInputChannel(channel); |
| if (err != OK) { |
| jniThrowException(env, "java/lang/IllegalStateException", |
| "Error setting input channel"); |
| return; |
| } |
| if (code->callbacks.onInputQueueCreated != NULL) { |
| code->callbacks.onInputQueueCreated(&code->activity, |
| code->nativeInputQueue); |
| } |
| } |
| } |
| |
| static void |
| onInputChannelDestroyed_native(JNIEnv* env, jobject clazz, jint handle, jobject channel) |
| { |
| if (handle != 0) { |
| NativeCode* code = (NativeCode*)handle; |
| if (code->nativeInputQueue != NULL |
| && code->callbacks.onInputQueueDestroyed != NULL) { |
| code->callbacks.onInputQueueDestroyed(&code->activity, |
| code->nativeInputQueue); |
| } |
| code->setInputChannel(NULL); |
| } |
| } |
| |
| static const JNINativeMethod g_methods[] = { |
| { "loadNativeCode", "(Ljava/lang/String;Landroid/os/MessageQueue;)I", (void*)loadNativeCode_native }, |
| { "unloadNativeCode", "(I)V", (void*)unloadNativeCode_native }, |
| { "onStartNative", "(I)V", (void*)onStart_native }, |
| { "onResumeNative", "(I)V", (void*)onResume_native }, |
| { "onSaveInstanceStateNative", "(I)V", (void*)onSaveInstanceState_native }, |
| { "onPauseNative", "(I)V", (void*)onPause_native }, |
| { "onStopNative", "(I)V", (void*)onStop_native }, |
| { "onLowMemoryNative", "(I)V", (void*)onLowMemory_native }, |
| { "onWindowFocusChangedNative", "(IZ)V", (void*)onWindowFocusChanged_native }, |
| { "onSurfaceCreatedNative", "(ILandroid/view/SurfaceHolder;)V", (void*)onSurfaceCreated_native }, |
| { "onSurfaceChangedNative", "(ILandroid/view/SurfaceHolder;III)V", (void*)onSurfaceChanged_native }, |
| { "onSurfaceDestroyedNative", "(ILandroid/view/SurfaceHolder;)V", (void*)onSurfaceDestroyed_native }, |
| { "onInputChannelCreatedNative", "(ILandroid/view/InputChannel;)V", (void*)onInputChannelCreated_native }, |
| { "onInputChannelDestroyedNative", "(ILandroid/view/InputChannel;)V", (void*)onInputChannelDestroyed_native }, |
| }; |
| |
| static const char* const kNativeActivityPathName = "android/app/NativeActivity"; |
| |
| #define FIND_CLASS(var, className) \ |
| var = env->FindClass(className); \ |
| LOG_FATAL_IF(! var, "Unable to find class " className); \ |
| var = jclass(env->NewGlobalRef(var)); |
| |
| #define GET_METHOD_ID(var, clazz, methodName, fieldDescriptor) \ |
| var = env->GetMethodID(clazz, methodName, fieldDescriptor); \ |
| LOG_FATAL_IF(! var, "Unable to find method" methodName); |
| |
| int register_android_app_NativeActivity(JNIEnv* env) |
| { |
| //LOGD("register_android_app_NativeActivity"); |
| |
| FIND_CLASS(gNativeActivityClassInfo.clazz, kNativeActivityPathName); |
| |
| GET_METHOD_ID(gNativeActivityClassInfo.dispatchUnhandledKeyEvent, |
| gNativeActivityClassInfo.clazz, |
| "dispatchUnhandledKeyEvent", "(Landroid/view/KeyEvent;)V"); |
| |
| return AndroidRuntime::registerNativeMethods( |
| env, kNativeActivityPathName, |
| g_methods, NELEM(g_methods)); |
| } |
| |
| } // namespace android |
