1 /* 2 * Copyright (C) 2020 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.media.tv.tuner.frontend; 18 19 import android.annotation.IntDef; 20 import android.annotation.SystemApi; 21 import android.hardware.tv.tuner.V1_0.Constants; 22 23 import java.lang.annotation.Retention; 24 import java.lang.annotation.RetentionPolicy; 25 26 /** 27 * Listens for tune events. 28 * 29 * @hide 30 */ 31 @SystemApi 32 public interface OnTuneEventListener { 33 34 /** @hide */ 35 @IntDef(prefix = "SIGNAL_", value = {SIGNAL_LOCKED, SIGNAL_NO_SIGNAL, SIGNAL_LOST_LOCK}) 36 @Retention(RetentionPolicy.SOURCE) 37 @interface TuneEvent {} 38 39 /** The frontend has locked to the signal specified by the tune method. */ 40 int SIGNAL_LOCKED = Constants.FrontendEventType.LOCKED; 41 /** The frontend is unable to lock to the signal specified by the tune method. */ 42 int SIGNAL_NO_SIGNAL = Constants.FrontendEventType.NO_SIGNAL; 43 /** The frontend has lost the lock to the signal specified by the tune method. */ 44 int SIGNAL_LOST_LOCK = Constants.FrontendEventType.LOST_LOCK; 45 46 /** Tune Event from the frontend */ onTuneEvent(@uneEvent int tuneEvent)47 void onTuneEvent(@TuneEvent int tuneEvent); 48 } 49