140be06cdf3a34856144574cf5e70b60e4ad4940cMikhail Naganov/* 240be06cdf3a34856144574cf5e70b60e4ad4940cMikhail Naganov * Copyright (C) 2016 The Android Open Source Project 340be06cdf3a34856144574cf5e70b60e4ad4940cMikhail Naganov * 440be06cdf3a34856144574cf5e70b60e4ad4940cMikhail Naganov * Licensed under the Apache License, Version 2.0 (the "License"); 540be06cdf3a34856144574cf5e70b60e4ad4940cMikhail Naganov * you may not use this file except in compliance with the License. 640be06cdf3a34856144574cf5e70b60e4ad4940cMikhail Naganov * You may obtain a copy of the License at 740be06cdf3a34856144574cf5e70b60e4ad4940cMikhail Naganov * 840be06cdf3a34856144574cf5e70b60e4ad4940cMikhail Naganov * http://www.apache.org/licenses/LICENSE-2.0 940be06cdf3a34856144574cf5e70b60e4ad4940cMikhail Naganov * 1040be06cdf3a34856144574cf5e70b60e4ad4940cMikhail Naganov * Unless required by applicable law or agreed to in writing, software 1140be06cdf3a34856144574cf5e70b60e4ad4940cMikhail Naganov * distributed under the License is distributed on an "AS IS" BASIS, 1240be06cdf3a34856144574cf5e70b60e4ad4940cMikhail Naganov * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1340be06cdf3a34856144574cf5e70b60e4ad4940cMikhail Naganov * See the License for the specific language governing permissions and 1440be06cdf3a34856144574cf5e70b60e4ad4940cMikhail Naganov * limitations under the License. 1540be06cdf3a34856144574cf5e70b60e4ad4940cMikhail Naganov */ 1640be06cdf3a34856144574cf5e70b60e4ad4940cMikhail Naganov 1740be06cdf3a34856144574cf5e70b60e4ad4940cMikhail Naganovpackage android.hardware.audio.effect@2.0; 1840be06cdf3a34856144574cf5e70b60e4ad4940cMikhail Naganov 1940be06cdf3a34856144574cf5e70b60e4ad4940cMikhail Naganovimport android.hardware.audio.common@2.0; 2040be06cdf3a34856144574cf5e70b60e4ad4940cMikhail Naganovimport IEffect; 2140be06cdf3a34856144574cf5e70b60e4ad4940cMikhail Naganov 2240be06cdf3a34856144574cf5e70b60e4ad4940cMikhail Naganovinterface IDownmixEffect extends IEffect { 23d26dc50abbad068cd1a673f204fa538c1c61bdb2Steven Moreland enum Type : int32_t { 2440be06cdf3a34856144574cf5e70b60e4ad4940cMikhail Naganov STRIP, // throw away the extra channels 2540be06cdf3a34856144574cf5e70b60e4ad4940cMikhail Naganov FOLD // mix the extra channels with FL/FR 2640be06cdf3a34856144574cf5e70b60e4ad4940cMikhail Naganov }; 2740be06cdf3a34856144574cf5e70b60e4ad4940cMikhail Naganov 283a2470f82dc9e5d27ecb68b8ed64d1413f4f6d3aMikhail Naganov /** 293a2470f82dc9e5d27ecb68b8ed64d1413f4f6d3aMikhail Naganov * Sets the current downmix preset. 303a2470f82dc9e5d27ecb68b8ed64d1413f4f6d3aMikhail Naganov */ 3140be06cdf3a34856144574cf5e70b60e4ad4940cMikhail Naganov setType(Type preset) generates (Result retval); 3240be06cdf3a34856144574cf5e70b60e4ad4940cMikhail Naganov 333a2470f82dc9e5d27ecb68b8ed64d1413f4f6d3aMikhail Naganov /** 343a2470f82dc9e5d27ecb68b8ed64d1413f4f6d3aMikhail Naganov * Gets the current downmix preset. 353a2470f82dc9e5d27ecb68b8ed64d1413f4f6d3aMikhail Naganov */ 3640be06cdf3a34856144574cf5e70b60e4ad4940cMikhail Naganov getType() generates (Result retval, Type preset); 3740be06cdf3a34856144574cf5e70b60e4ad4940cMikhail Naganov}; 38