106 lines
3.9 KiB
Text
106 lines
3.9 KiB
Text
/*
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* Copyright (C) 2019 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.tv.tuner@1.0;
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import ILnbCallback;
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/**
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* A Tuner LNB (low-noise block downconverter) is used by satellite frontend
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* to receive the microwave signal from the satellite, amplify it, and
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* downconvert the frequency to a lower frequency.
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*/
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interface ILnb {
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/**
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* Set the lnb callback.
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*
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* ILnbCallback is used by the client to receive events from the Lnb.
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* Only one callback per ILnb instance is supported. The callback
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* will be replaced if it's set again.
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*
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* @param callback Callback object to pass Lnb events to the system.
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* The previously registered callback must be replaced with this one.
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* It can be null.
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* @return result Result status of the operation.
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* SUCCESS if successful,
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* INVALID_STATE if callback can't be set at current stage,
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* UNKNOWN_ERROR if callback setting failed for other reasons.
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*/
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setCallback(ILnbCallback callback) generates (Result result);
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/**
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* Set the lnb's power voltage.
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*
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* @param voltage the power's voltage the Lnb to use.
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* @return result Result status of the operation.
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* SUCCESS if successful,
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* INVALID_ARGUMENT if the selected voltage isn't allowed,
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* UNKNOWN_ERROR if failed for other reasons.
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*/
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setVoltage(LnbVoltage voltage) generates (Result result);
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/**
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* Set the lnb's tone mode.
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*
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* @param tone the tone mode the Lnb to use.
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* @return result Result status of the operation.
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* SUCCESS if successful,
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* INVALID_ARGUMENT if the selected tone mode isn't allowed,
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* UNKNOWN_ERROR if failed for other reasons.
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*/
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setTone(LnbTone tone) generates (Result result);
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/**
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* Select the lnb's position.
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*
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* @param position the position the Lnb to use.
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* @return result Result status of the operation.
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* SUCCESS if successful,
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* INVALID_ARGUMENT if the selected position isn't allowed,
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* UNKNOWN_ERROR if failed for other reasons.
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*/
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setSatellitePosition(LnbPosition position) generates (Result result);
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/**
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* Sends DiSEqC (Digital Satellite Equipment Control) message.
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*
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* Client sends DiSeqc message to DiSEqc to LNB. The response message from
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* the device comes back to the client through frontend's callback
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* onDiseqcMessage.
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*
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* @param diseqcMessage a byte array of data for DiSEqC message which is
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* specified by EUTELSAT Bus Functional Specification Version 4.2.
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*
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* @return result Result status of the operation.
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* SUCCESS if successful,
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* INVALID_STATE if the frontend can't send DiSEqc Message, such as
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* cable frontend.
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* UNKNOWN_ERROR if failed for other reasons.
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*/
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sendDiseqcMessage(vec<uint8_t> diseqcMessage) generates (Result result);
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/**
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* Releases the LNB instance
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*
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* Associated resources are released. close may be called more than once.
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* Calls to any other method after this will return an error
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*
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* @return result Result status of the operation.
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* SUCCESS if successful,
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* UNKNOWN_ERROR if failed for other reasons.
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*/
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close() generates (Result result);
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};
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