replicant-frameworks_native/services/surfaceflinger/DisplayHardware/PowerHAL.cpp

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/*
* Copyright (C) 2012 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 <stdint.h>
#include <sys/types.h>
#include <cutils/log.h>
#include <utils/Errors.h>
#include <binder/IServiceManager.h>
#include <powermanager/IPowerManager.h>
#include <powermanager/PowerManager.h>
#include "PowerHAL.h"
namespace android {
// ---------------------------------------------------------------------------
status_t PowerHAL::vsyncHint(bool enabled) {
Mutex::Autolock _l(mlock);
if (mPowerManager == NULL) {
const String16 serviceName("power");
sp<IBinder> bs = defaultServiceManager()->checkService(serviceName);
if (bs == NULL) {
return NAME_NOT_FOUND;
}
mPowerManager = interface_cast<IPowerManager>(bs);
}
status_t status = mPowerManager->powerHint(POWER_HINT_VSYNC, enabled ? 1 : 0);
if(status == DEAD_OBJECT) {
mPowerManager = NULL;
}
return status;
}
// ---------------------------------------------------------------------------
}; // namespace android