| /* |
| * Copyright 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.media; |
| |
| import android.annotation.NonNull; |
| import android.media.VolumeShaper.Configuration; |
| |
| /** |
| * {@code VolumeAutomation} defines an interface for automatic volume control |
| * of {@link AudioTrack} and {@link MediaPlayer} objects. |
| */ |
| public interface VolumeAutomation { |
| /** |
| * Returns a {@link VolumeShaper} object that can be used modify the volume envelope |
| * of the player or track. |
| * |
| * @param configuration the {@link VolumeShaper.Configuration configuration} |
| * that specifies the curve and duration to use. |
| * @return a {@code VolumeShaper} object |
| * @throws IllegalArgumentException if the {@code configuration} is not allowed by the player. |
| * @throws IllegalStateException if too many {@code VolumeShaper}s are requested |
| * or the state of the player does not permit its creation (e.g. player is released). |
| */ |
| public @NonNull VolumeShaper createVolumeShaper( |
| @NonNull VolumeShaper.Configuration configuration); |
| } |