1 /* 2 * Copyright 2025 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 android.media; 18 19 import android.media.audio.common.AudioVolumeGroupChangeEvent; 20 21 /** 22 * The INativeAudioVolumeGroupCallback interface is a callback associated to the 23 * setVolumeGroupVolumeIndex API. The callback is used by the AudioPolicyManager 24 * implementation in native audio server to communicate volume changes. 25 * {@hide} 26 */ 27 oneway interface INativeAudioVolumeGroupCallback { 28 /** 29 * Called when the index applied by the AudioPolicyManager changes 30 */ onAudioVolumeGroupChanged(in AudioVolumeGroupChangeEvent volumeChangeEvent)31 void onAudioVolumeGroupChanged(in AudioVolumeGroupChangeEvent volumeChangeEvent); 32 } 33