| /* |
| * 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 "PowerManagerService-JNI" |
| |
| //#define LOG_NDEBUG 0 |
| |
| #include "JNIHelp.h" |
| #include "jni.h" |
| |
| #include <limits.h> |
| |
| #include <android_runtime/AndroidRuntime.h> |
| #include <utils/Timers.h> |
| #include <surfaceflinger/ISurfaceComposer.h> |
| #include <surfaceflinger/SurfaceComposerClient.h> |
| |
| #include <private/gui/ComposerService.h> |
| |
| #include "com_android_server_PowerManagerService.h" |
| |
| namespace android { |
| |
| // ---------------------------------------------------------------------------- |
| |
| static struct { |
| jmethodID goToSleep; |
| jmethodID userActivity; |
| } gPowerManagerServiceClassInfo; |
| |
| // ---------------------------------------------------------------------------- |
| |
| static jobject gPowerManagerServiceObj; |
| |
| static Mutex gPowerManagerLock; |
| static bool gScreenOn; |
| static bool gScreenBright; |
| |
| static nsecs_t gLastEventTime[POWER_MANAGER_LAST_EVENT + 1]; |
| |
| // Throttling interval for user activity calls. |
| static const nsecs_t MIN_TIME_BETWEEN_USERACTIVITIES = 500 * 1000000L; // 500ms |
| |
| // ---------------------------------------------------------------------------- |
| |
| static bool checkAndClearExceptionFromCallback(JNIEnv* env, const char* methodName) { |
| if (env->ExceptionCheck()) { |
| LOGE("An exception was thrown by callback '%s'.", methodName); |
| LOGE_EX(env); |
| env->ExceptionClear(); |
| return true; |
| } |
| return false; |
| } |
| |
| bool android_server_PowerManagerService_isScreenOn() { |
| AutoMutex _l(gPowerManagerLock); |
| return gScreenOn; |
| } |
| |
| bool android_server_PowerManagerService_isScreenBright() { |
| AutoMutex _l(gPowerManagerLock); |
| return gScreenBright; |
| } |
| |
| void android_server_PowerManagerService_userActivity(nsecs_t eventTime, int32_t eventType) { |
| if (gPowerManagerServiceObj) { |
| // Throttle calls into user activity by event type. |
| // We're a little conservative about argument checking here in case the caller |
| // passes in bad data which could corrupt system state. |
| if (eventType >= 0 && eventType <= POWER_MANAGER_LAST_EVENT) { |
| nsecs_t now = systemTime(SYSTEM_TIME_MONOTONIC); |
| if (eventTime > now) { |
| eventTime = now; |
| } |
| |
| if (gLastEventTime[eventType] + MIN_TIME_BETWEEN_USERACTIVITIES > eventTime) { |
| return; |
| } |
| gLastEventTime[eventType] = eventTime; |
| } |
| |
| JNIEnv* env = AndroidRuntime::getJNIEnv(); |
| |
| env->CallVoidMethod(gPowerManagerServiceObj, gPowerManagerServiceClassInfo.userActivity, |
| nanoseconds_to_milliseconds(eventTime), false, eventType, false); |
| checkAndClearExceptionFromCallback(env, "userActivity"); |
| } |
| } |
| |
| void android_server_PowerManagerService_goToSleep(nsecs_t eventTime) { |
| if (gPowerManagerServiceObj) { |
| JNIEnv* env = AndroidRuntime::getJNIEnv(); |
| |
| env->CallVoidMethod(gPowerManagerServiceObj, gPowerManagerServiceClassInfo.goToSleep, |
| nanoseconds_to_milliseconds(eventTime)); |
| checkAndClearExceptionFromCallback(env, "goToSleep"); |
| } |
| } |
| |
| // ---------------------------------------------------------------------------- |
| |
| static void android_server_PowerManagerService_nativeInit(JNIEnv* env, jobject obj) { |
| gPowerManagerServiceObj = env->NewGlobalRef(obj); |
| } |
| |
| static void android_server_PowerManagerService_nativeSetPowerState(JNIEnv* env, |
| jobject serviceObj, jboolean screenOn, jboolean screenBright) { |
| AutoMutex _l(gPowerManagerLock); |
| gScreenOn = screenOn; |
| gScreenBright = screenBright; |
| } |
| |
| static void android_server_PowerManagerService_nativeStartSurfaceFlingerAnimation(JNIEnv* env, |
| jobject obj, jint mode) { |
| sp<ISurfaceComposer> s(ComposerService::getComposerService()); |
| s->turnElectronBeamOff(mode); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| |
| static JNINativeMethod gPowerManagerServiceMethods[] = { |
| /* name, signature, funcPtr */ |
| { "nativeInit", "()V", |
| (void*) android_server_PowerManagerService_nativeInit }, |
| { "nativeSetPowerState", "(ZZ)V", |
| (void*) android_server_PowerManagerService_nativeSetPowerState }, |
| { "nativeStartSurfaceFlingerAnimation", "(I)V", |
| (void*) android_server_PowerManagerService_nativeStartSurfaceFlingerAnimation }, |
| }; |
| |
| #define FIND_CLASS(var, className) \ |
| var = env->FindClass(className); \ |
| LOG_FATAL_IF(! var, "Unable to find class " className); |
| |
| #define GET_METHOD_ID(var, clazz, methodName, methodDescriptor) \ |
| var = env->GetMethodID(clazz, methodName, methodDescriptor); \ |
| LOG_FATAL_IF(! var, "Unable to find method " methodName); |
| |
| #define GET_FIELD_ID(var, clazz, fieldName, fieldDescriptor) \ |
| var = env->GetFieldID(clazz, fieldName, fieldDescriptor); \ |
| LOG_FATAL_IF(! var, "Unable to find field " fieldName); |
| |
| int register_android_server_PowerManagerService(JNIEnv* env) { |
| int res = jniRegisterNativeMethods(env, "com/android/server/PowerManagerService", |
| gPowerManagerServiceMethods, NELEM(gPowerManagerServiceMethods)); |
| LOG_FATAL_IF(res < 0, "Unable to register native methods."); |
| |
| // Callbacks |
| |
| jclass clazz; |
| FIND_CLASS(clazz, "com/android/server/PowerManagerService"); |
| |
| GET_METHOD_ID(gPowerManagerServiceClassInfo.goToSleep, clazz, |
| "goToSleep", "(J)V"); |
| |
| GET_METHOD_ID(gPowerManagerServiceClassInfo.userActivity, clazz, |
| "userActivity", "(JZIZ)V"); |
| |
| // Initialize |
| for (int i = 0; i < POWER_MANAGER_LAST_EVENT; i++) { |
| gLastEventTime[i] = LLONG_MIN; |
| } |
| gScreenOn = true; |
| gScreenBright = true; |
| return 0; |
| } |
| |
| } /* namespace android */ |