| /* |
| * Copyright (C) 2018 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.CallbackExecutor; |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| |
| import java.util.concurrent.Executor; |
| |
| /** |
| * AudioRecordingMonitor defines an interface implemented by {@link AudioRecord} and |
| * {@link MediaRecorder} allowing applications to install a callback and be notified of changes |
| * in the capture path while recoding is active. |
| */ |
| public interface AudioRecordingMonitor { |
| /** |
| * Register a callback to be notified of audio capture changes via a |
| * {@link AudioManager.AudioRecordingCallback}. A callback is received when the capture path |
| * configuration changes (pre-processing, format, sampling rate...) or capture is |
| * silenced/unsilenced by the system. |
| * @param executor {@link Executor} to handle the callbacks. |
| * @param cb non-null callback to register |
| */ |
| void registerAudioRecordingCallback(@NonNull @CallbackExecutor Executor executor, |
| @NonNull AudioManager.AudioRecordingCallback cb); |
| |
| /** |
| * Unregister an audio recording callback previously registered with |
| * {@link #registerAudioRecordingCallback(Executor, AudioManager.AudioRecordingCallback)}. |
| * @param cb non-null callback to unregister |
| */ |
| void unregisterAudioRecordingCallback(@NonNull AudioManager.AudioRecordingCallback cb); |
| |
| /** |
| * Returns the current active audio recording for this audio recorder. |
| * @return a valid {@link AudioRecordingConfiguration} if this recorder is active |
| * or null otherwise. |
| * @see AudioRecordingConfiguration |
| */ |
| @Nullable AudioRecordingConfiguration getActiveRecordingConfiguration(); |
| } |