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 com.android.camera.one.v2.commands;
18
19import android.hardware.camera2.CameraAccessException;
20
21import com.android.camera.one.v2.camera2proxy.CameraCaptureSessionClosedException;
22import com.android.camera.one.v2.core.FrameServer;
23import com.android.camera.one.v2.core.RequestBuilder;
24import com.android.camera.one.v2.core.ResourceAcquisitionFailedException;
25
26import java.util.Arrays;
27
28/**
29 * Sends repeating preview requests to a {@link FrameServer}.
30 */
31public class PreviewCommand implements CameraCommand {
32    private final FrameServer mFrameServer;
33    private final RequestBuilder.Factory mBuilderFactory;
34    private final int mRequestType;
35
36    /**
37     * Constructs a Preview. Note that it is the responsibility of the
38     * {@link RequestBuilder.Factory} to attach the relevant
39     * {@link com.android.camera.one.v2.core.CaptureStream}s, such as the
40     * viewfinder surface.
41     */
42    public PreviewCommand(FrameServer frameServer, RequestBuilder.Factory builder,
43            int requestType) {
44        mFrameServer = frameServer;
45        mBuilderFactory = builder;
46        mRequestType = requestType;
47    }
48
49    public void run() throws InterruptedException, CameraAccessException,
50            CameraCaptureSessionClosedException, ResourceAcquisitionFailedException {
51        try (FrameServer.Session session = mFrameServer.createExclusiveSession()) {
52            RequestBuilder photoRequest = mBuilderFactory.create(mRequestType);
53            session.submitRequest(Arrays.asList(photoRequest.build()),
54                    FrameServer.RequestType.REPEATING);
55        }
56    }
57}
58