| /* |
| * Copyright 2017 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_NDEBUG 0 |
| #define LOG_TAG "JWakeLock" |
| #include <utils/Log.h> |
| |
| #include "JWakeLock.h" |
| |
| #include <media/stagefright/foundation/ADebug.h> |
| |
| namespace android { |
| |
| JWakeLock::JWakeLock(const sp<JObjectHolder> &context) : |
| mWakeLockCount(0), |
| mWakeLock(NULL), |
| mContext(context) {} |
| |
| JWakeLock::~JWakeLock() { |
| clearJavaWakeLock(); |
| } |
| |
| bool JWakeLock::acquire() { |
| if (mWakeLockCount == 0) { |
| if (mWakeLock == NULL) { |
| JNIEnv *env = JavaVMHelper::getJNIEnv(); |
| jclass jContextCls = env->FindClass("android/content/Context"); |
| jclass jPowerManagerCls = env->FindClass("android/os/PowerManager"); |
| |
| jmethodID jGetSystemService = env->GetMethodID(jContextCls, |
| "getSystemService", "(Ljava/lang/String;)Ljava/lang/Object;"); |
| jobject javaPowerManagerObj = env->CallObjectMethod(mContext->getJObject(), |
| jGetSystemService, env->NewStringUTF("power")); |
| |
| jfieldID jPARTIAL_WAKE_LOCK = env->GetStaticFieldID(jPowerManagerCls, |
| "PARTIAL_WAKE_LOCK", "I"); |
| jint PARTIAL_WAKE_LOCK = env->GetStaticIntField(jPowerManagerCls, jPARTIAL_WAKE_LOCK); |
| |
| jmethodID jNewWakeLock = env->GetMethodID(jPowerManagerCls, |
| "newWakeLock", "(ILjava/lang/String;)Landroid/os/PowerManager$WakeLock;"); |
| jobject javaWakeLock = env->CallObjectMethod(javaPowerManagerObj, |
| jNewWakeLock, PARTIAL_WAKE_LOCK, env->NewStringUTF("JWakeLock")); |
| mWakeLock = new JObjectHolder(javaWakeLock); |
| env->DeleteLocalRef(javaPowerManagerObj); |
| env->DeleteLocalRef(javaWakeLock); |
| } |
| if (mWakeLock != NULL) { |
| JNIEnv *env = JavaVMHelper::getJNIEnv(); |
| jclass wakeLockCls = env->FindClass("android/os/PowerManager$WakeLock"); |
| jmethodID jAcquire = env->GetMethodID(wakeLockCls, "acquire", "()V"); |
| env->CallVoidMethod(mWakeLock->getJObject(), jAcquire); |
| mWakeLockCount++; |
| return true; |
| } |
| } else { |
| mWakeLockCount++; |
| return true; |
| } |
| return false; |
| } |
| |
| void JWakeLock::release(bool force) { |
| if (mWakeLockCount == 0) { |
| return; |
| } |
| if (force) { |
| // Force wakelock release below by setting reference count to 1. |
| mWakeLockCount = 1; |
| } |
| if (--mWakeLockCount == 0) { |
| if (mWakeLock != NULL) { |
| JNIEnv *env = JavaVMHelper::getJNIEnv(); |
| jclass wakeLockCls = env->FindClass("android/os/PowerManager$WakeLock"); |
| jmethodID jRelease = env->GetMethodID(wakeLockCls, "release", "()V"); |
| env->CallVoidMethod(mWakeLock->getJObject(), jRelease); |
| } |
| } |
| } |
| |
| void JWakeLock::clearJavaWakeLock() { |
| release(true); |
| } |
| |
| } // namespace android |