PowerHAL.cpp revision d469a1c3285b974cf2637517cc25727da8f82668 
1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include <stdint.h>
18#include <sys/types.h>
19
20#include <cutils/log.h>
21#include <utils/Errors.h>
22
23#include <binder/IServiceManager.h>
24#include <powermanager/IPowerManager.h>
25#include <powermanager/PowerManager.h>
26
27#include "PowerHAL.h"
28
29namespace android {
30// ---------------------------------------------------------------------------
31
32status_t PowerHAL::vsyncHint(bool enabled) {
33    Mutex::Autolock _l(mlock);
34    if (mPowerManager == NULL) {
35        const String16 serviceName("power");
36        sp<IBinder> bs = defaultServiceManager()->checkService(serviceName);
37        if (bs == NULL) {
38            return NAME_NOT_FOUND;
39        }
40        mPowerManager = interface_cast<IPowerManager>(bs);
41    }
42    status_t status = mPowerManager->powerHint(POWER_HINT_VSYNC, enabled ? 1 : 0);
43    if(status == DEAD_OBJECT) {
44        mPowerManager = NULL;
45    }
46    return status;
47}
48
49// ---------------------------------------------------------------------------
50}; // namespace android
51
52