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
17package android.hardware.audio.effect@4.0;
18
19/**
20 * This callback interface contains functions that can be used by the effect
21 * engine 'process' function to exchange input and output audio buffers.
22 */
23interface IEffectBufferProviderCallback {
24    /**
25     * Called to retrieve a buffer where data should read from by 'process'
26     * function.
27     *
28     * @return buffer audio buffer for processing
29     */
30    getBuffer() generates (AudioBuffer buffer);
31
32    /**
33     * Called to provide a buffer with the data written by 'process' function.
34     *
35     * @param buffer audio buffer for processing
36     */
37    putBuffer(AudioBuffer buffer);
38};
39