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/*
* Copyright (C) 2011 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.
*/
#ifndef ANDROID_ICOMMONCLOCK_H
#define ANDROID_ICOMMONCLOCK_H
#include <stdint.h>
#include <linux/socket.h>
#include <binder/IInterface.h>
#include <binder/IServiceManager.h>
namespace android {
class ICommonClockListener : public IInterface {
public:
DECLARE_META_INTERFACE(CommonClockListener);
virtual void onTimelineChanged(uint64_t timelineID) = 0;
};
class BnCommonClockListener : public BnInterface<ICommonClockListener> {
public:
virtual status_t onTransact(uint32_t code, const Parcel& data,
Parcel* reply, uint32_t flags = 0);
};
class ICommonClock : public IInterface {
public:
DECLARE_META_INTERFACE(CommonClock);
// Name of the ICommonClock service registered with the service manager.
static const String16 kServiceName;
// a reserved invalid timeline ID
static const uint64_t kInvalidTimelineID;
// a reserved invalid error estimate
static const int32_t kErrorEstimateUnknown;
enum State {
// the device just came up and is trying to discover the master
STATE_INITIAL,
// the device is a client of a master
STATE_CLIENT,
// the device is acting as master
STATE_MASTER,
// the device has lost contact with its master and needs to participate
// in the election of a new master
STATE_RONIN,
// the device is waiting for announcement of the newly elected master
STATE_WAIT_FOR_ELECTION,
};
virtual status_t isCommonTimeValid(bool* valid, uint32_t* timelineID) = 0;
virtual status_t commonTimeToLocalTime(int64_t commonTime,
int64_t* localTime) = 0;
virtual status_t localTimeToCommonTime(int64_t localTime,
int64_t* commonTime) = 0;
virtual status_t getCommonTime(int64_t* commonTime) = 0;
virtual status_t getCommonFreq(uint64_t* freq) = 0;
virtual status_t getLocalTime(int64_t* localTime) = 0;
virtual status_t getLocalFreq(uint64_t* freq) = 0;
virtual status_t getEstimatedError(int32_t* estimate) = 0;
virtual status_t getTimelineID(uint64_t* id) = 0;
virtual status_t getState(State* state) = 0;
virtual status_t getMasterAddr(struct sockaddr_storage* addr) = 0;
virtual status_t registerListener(
const sp<ICommonClockListener>& listener) = 0;
virtual status_t unregisterListener(
const sp<ICommonClockListener>& listener) = 0;
// Simple helper to make it easier to connect to the CommonClock service.
static inline sp<ICommonClock> getInstance() {
sp<IBinder> binder = defaultServiceManager()->checkService(
ICommonClock::kServiceName);
sp<ICommonClock> clk = interface_cast<ICommonClock>(binder);
return clk;
}
};
class BnCommonClock : public BnInterface<ICommonClock> {
public:
virtual status_t onTransact(uint32_t code, const Parcel& data,
Parcel* reply, uint32_t flags = 0);
};
}; // namespace android
#endif // ANDROID_ICOMMONCLOCK_H
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