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 #pragma once 18 19 #include <system/audio.h> 20 #include <media/AudioSystem.h> 21 22 namespace android { 23 24 // keep in sync with AudioManager.AudioVolumeGroupChangeHandler.java 25 #define AUDIOVOLUMEGROUP_EVENT_VOLUME_CHANGED 1000 26 #define AUDIOVOLUMEGROUP_EVENT_SERVICE_DIED 1001 27 28 class JNIAudioVolumeGroupCallback: public AudioSystem::AudioVolumeGroupCallback 29 { 30 public: 31 JNIAudioVolumeGroupCallback(JNIEnv* env, jobject thiz, jobject weak_thiz); 32 ~JNIAudioVolumeGroupCallback(); 33 34 void onAudioVolumeGroupChanged(volume_group_t group, int flags) override; 35 void onServiceDied() override; 36 37 private: 38 void sendEvent(int event); 39 40 jclass mClass; /**< Reference to AudioVolumeGroupChangeHandler class. */ 41 jobject mObject; /**< Weak ref to AudioVolumeGroupChangeHandler object to call on. */ 42 }; 43 44 } // namespace android 45