58 lines
2.1 KiB
Text
58 lines
2.1 KiB
Text
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.hardware.gnss@1.0;
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import IGnssMeasurementCallback;
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/**
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* Extended interface for GNSS Measurements support.
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*/
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interface IGnssMeasurement {
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@export(name="", value_prefix="GPS_MEASUREMENT_")
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enum GnssMeasurementStatus : int32_t {
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SUCCESS = 0,
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ERROR_ALREADY_INIT = -100,
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ERROR_GENERIC = -101
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};
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/**
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* Initializes the interface and registers the callback routines with the HAL.
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* After a successful call to 'setCallback' the HAL must begin to provide updates at
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* an average output rate of 1Hz (occasional
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* intra-measurement time offsets in the range from 0-2000msec can be
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* tolerated.)
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*
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* @param callback Handle to GnssMeasurement callback interface.
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*
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* @return initRet Returns SUCCESS if successful.
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* Returns ERROR_ALREADY_INIT if a callback has already been
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* registered without a corresponding call to 'close'.
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* Returns ERROR_GENERIC for any other error. The HAL must
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* not generate any other updates upon returning this error code.
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*/
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setCallback(IGnssMeasurementCallback callback) generates (GnssMeasurementStatus initRet);
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/**
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* Stops updates from the HAL, and unregisters the callback routines.
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* After a call to close(), the previously registered callbacks must be
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* considered invalid by the HAL.
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* If close() is invoked without a previous setCallback, this function must perform
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* no work.
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*/
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close();
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};
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