1 /** 2 * Copyright (C) 2018 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 com.android.car.radio.utils; 18 19 import android.annotation.NonNull; 20 import android.hardware.radio.ProgramSelector; 21 import android.hardware.radio.RadioManager; 22 23 import com.android.car.broadcastradio.support.platform.ProgramSelectorExt; 24 import com.android.car.radio.storage.RadioStorage; 25 26 /** 27 * Helper methods for android.hardware.radio.ProgramSelector. 28 * 29 * Most probably, this code will end up refactored out, less likely pushed to the platform. 30 */ 31 public class ProgramSelectorUtils { 32 /** 33 * Returns AM/FM band for a given ProgramSelector. 34 * 35 * @param sel ProgramSelector to check. 36 * @return {@link RadioManager#BAND_FM} if sel is FM program, 37 * {@link RadioManager#BAND_AM} if sel is AM program, 38 * {@link RadioStorage#INVALID_RADIO_BAND} otherwise. 39 */ getRadioBand(@onNull ProgramSelector sel)40 public static int getRadioBand(@NonNull ProgramSelector sel) { 41 if (!ProgramSelectorExt.isAmFmProgram(sel)) return RadioStorage.INVALID_RADIO_BAND; 42 if (!ProgramSelectorExt.hasId(sel, ProgramSelector.IDENTIFIER_TYPE_AMFM_FREQUENCY)) { 43 return RadioStorage.INVALID_RADIO_BAND; 44 } 45 46 long freq = sel.getFirstId(ProgramSelector.IDENTIFIER_TYPE_AMFM_FREQUENCY); 47 if (ProgramSelectorExt.isAmFrequency(freq)) return RadioManager.BAND_AM; 48 if (ProgramSelectorExt.isFmFrequency(freq)) return RadioManager.BAND_FM; 49 50 return RadioStorage.INVALID_RADIO_BAND; 51 } 52 } 53