| /** |
| * Copyright (C) 2017 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 com.android.server.broadcastradio.hal2; |
| |
| import android.annotation.NonNull; |
| import android.os.RemoteException; |
| |
| enum FrequencyBand { |
| UNKNOWN, |
| FM, |
| AM_LW, |
| AM_MW, |
| AM_SW, |
| }; |
| |
| class Utils { |
| private static final String TAG = "BcRadio2Srv.utils"; |
| |
| static FrequencyBand getBand(int freq) { |
| // keep in sync with hardware/interfaces/broadcastradio/common/utils2x/Utils.cpp |
| if (freq < 30) return FrequencyBand.UNKNOWN; |
| if (freq < 500) return FrequencyBand.AM_LW; |
| if (freq < 1705) return FrequencyBand.AM_MW; |
| if (freq < 30000) return FrequencyBand.AM_SW; |
| if (freq < 60000) return FrequencyBand.UNKNOWN; |
| if (freq < 110000) return FrequencyBand.FM; |
| return FrequencyBand.UNKNOWN; |
| } |
| |
| interface FuncThrowingRemoteException<T> { |
| T exec() throws RemoteException; |
| } |
| |
| static <T> T maybeRethrow(@NonNull FuncThrowingRemoteException<T> r) { |
| try { |
| return r.exec(); |
| } catch (RemoteException ex) { |
| ex.rethrowFromSystemServer(); |
| return null; // unreachable |
| } |
| } |
| |
| interface VoidFuncThrowingRemoteException { |
| void exec() throws RemoteException; |
| } |
| |
| static void maybeRethrow(@NonNull VoidFuncThrowingRemoteException r) { |
| try { |
| r.exec(); |
| } catch (RemoteException ex) { |
| ex.rethrowFromSystemServer(); |
| } |
| } |
| } |