Home | History | Annotate | Download | only in common_time 
      1 /*
      2  * Copyright (C) 2011 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 <common_time/local_clock.h>
     18 #include <utils/String8.h>
     19 
     20 #include "common_clock_service.h"
     21 #include "common_clock.h"
     22 #include "common_time_server.h"
     23 
     24 namespace android {
     25 
     26 sp<CommonClockService> CommonClockService::instantiate(
     27         CommonTimeServer& timeServer) {
     28     sp<CommonClockService> tcc = new CommonClockService(timeServer);
     29     if (tcc == NULL)
     30         return NULL;
     31 
     32     defaultServiceManager()->addService(ICommonClock::kServiceName, tcc);
     33     return tcc;
     34 }
     35 
     36 status_t CommonClockService::dump(int fd, const Vector<String16>& args) {
     37     Mutex::Autolock lock(mRegistrationLock);
     38     return mTimeServer.dumpClockInterface(fd, args, mListeners.size());
     39 }
     40 
     41 status_t CommonClockService::isCommonTimeValid(bool* valid,
     42                                                uint32_t* timelineID) {
     43     return mTimeServer.isCommonTimeValid(valid, timelineID);
     44 }
     45 
     46 status_t CommonClockService::commonTimeToLocalTime(int64_t  commonTime,
     47                                                    int64_t* localTime) {
     48     return mTimeServer.getCommonClock().commonToLocal(commonTime, localTime);
     49 }
     50 
     51 status_t CommonClockService::localTimeToCommonTime(int64_t  localTime,
     52                                                    int64_t* commonTime) {
     53     return mTimeServer.getCommonClock().localToCommon(localTime, commonTime);
     54 }
     55 
     56 status_t CommonClockService::getCommonTime(int64_t* commonTime) {
     57     return localTimeToCommonTime(mTimeServer.getLocalClock().getLocalTime(), commonTime);
     58 }
     59 
     60 status_t CommonClockService::getCommonFreq(uint64_t* freq) {
     61     *freq = mTimeServer.getCommonClock().getCommonFreq();
     62     return OK;
     63 }
     64 
     65 status_t CommonClockService::getLocalTime(int64_t* localTime) {
     66     *localTime = mTimeServer.getLocalClock().getLocalTime();
     67     return OK;
     68 }
     69 
     70 status_t CommonClockService::getLocalFreq(uint64_t* freq) {
     71     *freq = mTimeServer.getLocalClock().getLocalFreq();
     72     return OK;
     73 }
     74 
     75 status_t CommonClockService::getEstimatedError(int32_t* estimate) {
     76     *estimate = mTimeServer.getEstimatedError();
     77     return OK;
     78 }
     79 
     80 status_t CommonClockService::getTimelineID(uint64_t* id) {
     81     *id = mTimeServer.getTimelineID();
     82     return OK;
     83 }
     84 
     85 status_t CommonClockService::getState(State* state) {
     86     *state = mTimeServer.getState();
     87     return OK;
     88 }
     89 
     90 status_t CommonClockService::getMasterAddr(struct sockaddr_storage* addr) {
     91     return mTimeServer.getMasterAddr(addr);
     92 }
     93 
     94 status_t CommonClockService::registerListener(
     95         const sp<ICommonClockListener>& listener) {
     96     Mutex::Autolock lock(mRegistrationLock);
     97 
     98     {   // scoping for autolock pattern
     99         Mutex::Autolock lock(mCallbackLock);
    100         // check whether this is a duplicate
    101         for (size_t i = 0; i < mListeners.size(); i++) {
    102             if (IInterface::asBinder(mListeners[i]) == IInterface::asBinder(listener))
    103                 return ALREADY_EXISTS;
    104         }
    105     }
    106 
    107     mListeners.add(listener);
    108     mTimeServer.reevaluateAutoDisableState(0 != mListeners.size());
    109     return IInterface::asBinder(listener)->linkToDeath(this);
    110 }
    111 
    112 status_t CommonClockService::unregisterListener(
    113         const sp<ICommonClockListener>& listener) {
    114     Mutex::Autolock lock(mRegistrationLock);
    115     status_t ret_val = NAME_NOT_FOUND;
    116 
    117     {   // scoping for autolock pattern
    118         Mutex::Autolock lock(mCallbackLock);
    119         for (size_t i = 0; i < mListeners.size(); i++) {
    120             if (IInterface::asBinder(mListeners[i]) == IInterface::asBinder(listener)) {
    121                 IInterface::asBinder(mListeners[i])->unlinkToDeath(this);
    122                 mListeners.removeAt(i);
    123                 ret_val = OK;
    124                 break;
    125             }
    126         }
    127     }
    128 
    129     mTimeServer.reevaluateAutoDisableState(0 != mListeners.size());
    130     return ret_val;
    131 }
    132 
    133 void CommonClockService::binderDied(const wp<IBinder>& who) {
    134     Mutex::Autolock lock(mRegistrationLock);
    135 
    136     {   // scoping for autolock pattern
    137         Mutex::Autolock lock(mCallbackLock);
    138         for (size_t i = 0; i < mListeners.size(); i++) {
    139             if (IInterface::asBinder(mListeners[i]) == who) {
    140                 mListeners.removeAt(i);
    141                 break;
    142             }
    143         }
    144     }
    145 
    146     mTimeServer.reevaluateAutoDisableState(0 != mListeners.size());
    147 }
    148 
    149 void CommonClockService::notifyOnTimelineChanged(uint64_t timelineID) {
    150     Mutex::Autolock lock(mCallbackLock);
    151 
    152     for (size_t i = 0; i < mListeners.size(); i++) {
    153         mListeners[i]->onTimelineChanged(timelineID);
    154     }
    155 }
    156 
    157 }; // namespace android
    158