1/*
2 * Copyright (C) 2014 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.camera2.impl;
18
19/**
20 * Getter interface for use with Command pattern metadata value getters.
21 */
22public interface GetCommand {
23
24    /**
25     * Get the value from the given {@link CameraMetadataNative} object.
26     *
27     * @param metadata the {@link CameraMetadataNative} object to get the value from.
28     * @param key the {@link CameraMetadataNative.Key} to look up.
29     * @param <T> the type of the value.
30     * @return the value for a given {@link CameraMetadataNative.Key}.
31     */
32    public <T> T getValue(CameraMetadataNative metadata, CameraMetadataNative.Key<T> key);
33}
34