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/*
* Copyright (C) 2022 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.
*/
package android.media;
import android.annotation.NonNull;
import android.annotation.SystemApi;
import android.app.StatusBarManager;
import java.util.List;
import java.util.function.Consumer;
/**
* An interface that provides information about nearby devices that are able to play media.
* <p>
* External clients can implement this interface and pass it to the system via
* {@link StatusBarManager#registerNearbyMediaDevicesProvider} to inform the system of nearby media
* devices.
* <p>
* @hide
*/
@SystemApi
public interface NearbyMediaDevicesProvider {
/**
* Registers a callback that should be notified each time nearby media device(s) change.
* <p>
* When a callback is newly registered, it should be immediately notified of the current nearby
* media devices. Afterwards, the list of devices passed to the callback should always contain
* the full set of nearby media devices any time you get an update. If a device is no longer
* valid (went offline, e.g.) then it should be omitted from the list in the next update.
* <p>
* @param callback the callback that will consume updates to the nearby media devices.
*/
void registerNearbyDevicesCallback(@NonNull Consumer<List<NearbyDevice>> callback);
/**
* Unregisters a callback. @see #registerNearbyDevicesCallback.
* <p>
* @param callback the callback to unregister.
*/
void unregisterNearbyDevicesCallback(@NonNull Consumer<List<NearbyDevice>> callback);
}
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