1 /* 2 * Copyright 2021 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.SpatializationLevel; 20 import android.media.SpatializerHeadTrackingMode; 21 22 /** 23 * The ISpatializerHeadTrackingCallback interface is a callback associated to the 24 * Spatializer head tracking function. It can be registered via the ISpatializer 25 * interface to monitor head tracking related states. 26 * {@hide} 27 */ 28 oneway interface ISpatializerHeadTrackingCallback { 29 /** Called when the head tracking mode has changed 30 */ onHeadTrackingModeChanged(SpatializerHeadTrackingMode mode)31 void onHeadTrackingModeChanged(SpatializerHeadTrackingMode mode); 32 33 /** Called when the head to stage pose hase been updated 34 * The head to stage pose is conveyed as a vector of 6 elements, 35 * where the first three are a translation vector and 36 * the last three are a rotation vector. 37 */ onHeadToSoundStagePoseUpdated(in float[] headToStage)38 void onHeadToSoundStagePoseUpdated(in float[] headToStage); 39 } 40