1/* 2 * Copyright (C) 2016 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 17package android.hardware.audio.effect@2.0; 18 19import android.hardware.audio.common@2.0; 20import IEffect; 21 22interface IDownmixEffect extends IEffect { 23 enum Type : int32_t { 24 STRIP, // throw away the extra channels 25 FOLD // mix the extra channels with FL/FR 26 }; 27 28 /** 29 * Sets the current downmix preset. 30 */ 31 setType(Type preset) generates (Result retval); 32 33 /** 34 * Gets the current downmix preset. 35 */ 36 getType() generates (Result retval, Type preset); 37}; 38