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86 lines
3.3 KiB
86 lines
3.3 KiB
/* Copyright (C) 2017 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.broadcastradio@2.0;
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interface ITunerCallback {
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/**
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* Method called by the HAL when a tuning operation fails asynchronously
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* following ITunerSession::tune(), ITunerSession::scan() or
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* ITunerSession::step().
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*
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* This callback is only called when the step(), scan() or tune() command
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* returned OK at first.
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*
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* @param result TIMEOUT in case of time out.
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* @param selector A ProgramSelector structure passed from tune() call;
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* empty for step() and scan().
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*/
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oneway onTuneFailed(Result result, ProgramSelector selector);
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/**
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* Method called by the HAL when current program information (including
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* metadata) is updated.
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*
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* This is also called when the radio tuned to the static (not a valid
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* station), see the TUNED flag of ProgramInfoFlags.
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*
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* @param info Current program information.
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*/
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oneway onCurrentProgramInfoChanged(ProgramInfo info);
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/**
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* A delta update of the program list, called whenever there's a change in
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* the list.
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*
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* If there are frequent changes, HAL implementation must throttle the rate
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* of the updates.
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*
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* There is a hard limit on binder transaction buffer, and the list must
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* not exceed it. For large lists, HAL implementation must split them to
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* multiple chunks, no larger than 500kiB each.
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*
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* @param chunk A chunk of the program list update.
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*/
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oneway onProgramListUpdated(ProgramListChunk chunk);
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/**
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* Method called by the HAL when the antenna gets connected or disconnected.
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*
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* For a new tuner session, client must assume the antenna is connected.
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* If it's not, then antennaStateChange must be called within
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* Constants::ANTENNA_DISCONNECTED_TIMEOUT_MS to indicate that.
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*
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* @param connected True if the antenna is now connected, false otherwise.
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*/
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oneway onAntennaStateChange(bool connected);
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/**
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* Generic callback for passing updates to vendor-specific parameter values.
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* The framework does not interpret the parameters, they are passed
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* in an opaque manner between a vendor application and HAL.
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*
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* It's up to the HAL implementation if and how to implement this callback,
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* as long as it obeys the prefix rule. In particular, only selected keys
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* may be notified this way. However, setParameters must not trigger
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* this callback, while an internal event can change parameters
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* asynchronously.
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*
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* @param parameters Vendor-specific key-value pairs,
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* opaque to Android framework.
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*/
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oneway onParametersUpdated(vec<VendorKeyValue> parameters);
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};
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