From 99e69716215cd0665379bc90d708f2ea8689831d Mon Sep 17 00:00:00 2001 From: Ruben Brunk Date: Tue, 26 May 2015 17:25:07 -0700 Subject: Track camera and flashlight usage in battery stats. Bug: 15986092 Change-Id: I9dc6828332e4091fd93bf2d82839e8e3862a2fc2 --- media/utils/BatteryNotifier.cpp | 213 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 213 insertions(+) create mode 100644 media/utils/BatteryNotifier.cpp (limited to 'media/utils/BatteryNotifier.cpp') diff --git a/media/utils/BatteryNotifier.cpp b/media/utils/BatteryNotifier.cpp new file mode 100644 index 0000000..7f9cd7a --- /dev/null +++ b/media/utils/BatteryNotifier.cpp @@ -0,0 +1,213 @@ +/* + * Copyright 2015, 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/mediautils/BatteryNotifier.h" + +#include +#include +#include + +namespace android { + +void BatteryNotifier::DeathNotifier::binderDied(const wp& /*who*/) { + BatteryNotifier::getInstance().onBatteryStatServiceDied(); +} + +BatteryNotifier::BatteryNotifier() : mVideoRefCount(0), mAudioRefCount(0) {} + +BatteryNotifier::~BatteryNotifier() { + Mutex::Autolock _l(mLock); + if (mDeathNotifier != nullptr) { + IInterface::asBinder(mBatteryStatService)->unlinkToDeath(mDeathNotifier); + } +} + +void BatteryNotifier::noteStartVideo() { + Mutex::Autolock _l(mLock); + sp batteryService = getBatteryService_l(); + if (mVideoRefCount == 0 && batteryService != nullptr) { + batteryService->noteStartVideo(AID_MEDIA); + } + mVideoRefCount++; +} + +void BatteryNotifier::noteStopVideo() { + Mutex::Autolock _l(mLock); + if (mVideoRefCount == 0) { + ALOGW("%s: video refcount is broken.", __FUNCTION__); + return; + } + + sp batteryService = getBatteryService_l(); + + mVideoRefCount--; + if (mVideoRefCount == 0 && batteryService != nullptr) { + batteryService->noteStopVideo(AID_MEDIA); + } +} + +void BatteryNotifier::noteResetVideo() { + Mutex::Autolock _l(mLock); + sp batteryService = getBatteryService_l(); + mVideoRefCount = 0; + if (batteryService != nullptr) { + batteryService->noteResetAudio(); + } +} + +void BatteryNotifier::noteStartAudio() { + Mutex::Autolock _l(mLock); + sp batteryService = getBatteryService_l(); + if (mAudioRefCount == 0 && batteryService != nullptr) { + batteryService->noteStartAudio(AID_MEDIA); + } + mAudioRefCount++; +} + +void BatteryNotifier::noteStopAudio() { + Mutex::Autolock _l(mLock); + if (mAudioRefCount == 0) { + ALOGW("%s: audio refcount is broken.", __FUNCTION__); + return; + } + + sp batteryService = getBatteryService_l(); + + mAudioRefCount--; + if (mAudioRefCount == 0 && batteryService != nullptr) { + batteryService->noteStopAudio(AID_MEDIA); + } +} + +void BatteryNotifier::noteResetAudio() { + Mutex::Autolock _l(mLock); + sp batteryService = getBatteryService_l(); + mAudioRefCount = 0; + if (batteryService != nullptr) { + batteryService->noteResetAudio(); + } +} + +void BatteryNotifier::noteFlashlightOn(const String8& id, int uid) { + Mutex::Autolock _l(mLock); + sp batteryService = getBatteryService_l(); + + std::pair k = std::make_pair(id, uid); + if (!mFlashlightState[k]) { + mFlashlightState[k] = true; + if (batteryService != nullptr) { + batteryService->noteFlashlightOn(uid); + } + } +} + +void BatteryNotifier::noteFlashlightOff(const String8& id, int uid) { + Mutex::Autolock _l(mLock); + sp batteryService = getBatteryService_l(); + + std::pair k = std::make_pair(id, uid); + if (mFlashlightState[k]) { + mFlashlightState[k] = false; + if (batteryService != nullptr) { + batteryService->noteFlashlightOff(uid); + } + } +} + +void BatteryNotifier::noteResetFlashlight() { + Mutex::Autolock _l(mLock); + sp batteryService = getBatteryService_l(); + mFlashlightState.clear(); + if (batteryService != nullptr) { + batteryService->noteResetFlashlight(); + } +} + +void BatteryNotifier::noteStartCamera(const String8& id, int uid) { + Mutex::Autolock _l(mLock); + sp batteryService = getBatteryService_l(); + std::pair k = std::make_pair(id, uid); + if (!mCameraState[k]) { + mCameraState[k] = true; + if (batteryService != nullptr) { + batteryService->noteStartCamera(uid); + } + } +} + +void BatteryNotifier::noteStopCamera(const String8& id, int uid) { + Mutex::Autolock _l(mLock); + sp batteryService = getBatteryService_l(); + std::pair k = std::make_pair(id, uid); + if (mCameraState[k]) { + mCameraState[k] = false; + if (batteryService != nullptr) { + batteryService->noteStopCamera(uid); + } + } +} + +void BatteryNotifier::noteResetCamera() { + Mutex::Autolock _l(mLock); + sp batteryService = getBatteryService_l(); + mCameraState.clear(); + if (batteryService != nullptr) { + batteryService->noteResetCamera(); + } +} + +void BatteryNotifier::onBatteryStatServiceDied() { + Mutex::Autolock _l(mLock); + mBatteryStatService.clear(); + mDeathNotifier.clear(); + // Do not reset mVideoRefCount and mAudioRefCount here. The ref + // counting is independent of the battery service availability. + // We need this if battery service becomes available after media + // started. + +} + +sp BatteryNotifier::getBatteryService_l() { + if (mBatteryStatService != nullptr) { + return mBatteryStatService; + } + // Get battery service from service manager + const sp sm(defaultServiceManager()); + if (sm != nullptr) { + const String16 name("batterystats"); + mBatteryStatService = interface_cast(sm->checkService(name)); + if (mBatteryStatService == nullptr) { + ALOGE("batterystats service unavailable!"); + return nullptr; + } + + mDeathNotifier = new DeathNotifier(); + IInterface::asBinder(mBatteryStatService)->linkToDeath(mDeathNotifier); + + // Notify start now if media already started + if (mVideoRefCount > 0) { + mBatteryStatService->noteStartVideo(AID_MEDIA); + } + if (mAudioRefCount > 0) { + mBatteryStatService->noteStartAudio(AID_MEDIA); + } + } + return mBatteryStatService; +} + +ANDROID_SINGLETON_STATIC_INSTANCE(BatteryNotifier); + +} // namespace android -- cgit v1.1