| /** |
| * 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 android.hardware.radio; |
| |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.os.Handler; |
| import android.os.Looper; |
| import android.os.RemoteException; |
| import android.util.Log; |
| |
| /** |
| * Implements the ITunerCallback interface by forwarding calls to RadioTuner.Callback. |
| */ |
| class TunerCallbackAdapter extends ITunerCallback.Stub { |
| private static final String TAG = "BroadcastRadio.TunerCallbackAdapter"; |
| |
| @NonNull private final RadioTuner.Callback mCallback; |
| @NonNull private final Handler mHandler; |
| private final Object mLock = new Object(); |
| |
| @Nullable private ITuner mTuner; |
| boolean mPendingProgramInfoChanged = false; |
| |
| TunerCallbackAdapter(@NonNull RadioTuner.Callback callback, @Nullable Handler handler) { |
| mCallback = callback; |
| if (handler == null) { |
| mHandler = new Handler(Looper.getMainLooper()); |
| } else { |
| mHandler = handler; |
| } |
| } |
| |
| public void attachTuner(@NonNull ITuner tuner) { |
| synchronized (mLock) { |
| if (mTuner != null) throw new IllegalStateException(); |
| mTuner = tuner; |
| if (mPendingProgramInfoChanged) onProgramInfoChanged(); |
| } |
| } |
| |
| @Override |
| public void onError(int status) { |
| mHandler.post(() -> mCallback.onError(status)); |
| } |
| |
| @Override |
| public void onConfigurationChanged(RadioManager.BandConfig config) { |
| mHandler.post(() -> mCallback.onConfigurationChanged(config)); |
| } |
| |
| @Override |
| public void onProgramInfoChanged() { |
| synchronized (mLock) { |
| if (mTuner == null) { |
| mPendingProgramInfoChanged = true; |
| return; |
| } |
| } |
| |
| RadioManager.ProgramInfo info; |
| try { |
| info = mTuner.getProgramInformation(); |
| } catch (RemoteException e) { |
| Log.e(TAG, "service died", e); |
| return; |
| } |
| |
| mHandler.post(() -> { |
| mCallback.onProgramInfoChanged(info); |
| |
| RadioMetadata metadata = info.getMetadata(); |
| if (metadata != null) mCallback.onMetadataChanged(metadata); |
| }); |
| } |
| |
| @Override |
| public void onTrafficAnnouncement(boolean active) { |
| mHandler.post(() -> mCallback.onTrafficAnnouncement(active)); |
| } |
| |
| @Override |
| public void onEmergencyAnnouncement(boolean active) { |
| mHandler.post(() -> mCallback.onEmergencyAnnouncement(active)); |
| } |
| |
| @Override |
| public void onAntennaState(boolean connected) { |
| mHandler.post(() -> mCallback.onAntennaState(connected)); |
| } |
| |
| @Override |
| public void onBackgroundScanAvailabilityChange(boolean isAvailable) { |
| mHandler.post(() -> mCallback.onBackgroundScanAvailabilityChange(isAvailable)); |
| } |
| |
| @Override |
| public void onBackgroundScanComplete() { |
| mHandler.post(() -> mCallback.onBackgroundScanComplete()); |
| } |
| |
| @Override |
| public void onProgramListChanged() { |
| mHandler.post(() -> mCallback.onProgramListChanged()); |
| } |
| } |