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 
17 package com.android.camera.one.v2.commands;
18 
19 import android.hardware.camera2.CameraAccessException;
20 
21 import com.android.camera.one.v2.camera2proxy.CameraCaptureSessionClosedException;
22 import com.android.camera.one.v2.core.FrameServer;
23 import com.android.camera.one.v2.core.RequestBuilder;
24 import com.android.camera.one.v2.core.ResourceAcquisitionFailedException;
25 
26 import java.util.Arrays;
27 
28 /**
29  * Sends repeating preview requests to a {@link FrameServer}.
30  */
31 public 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      */
PreviewCommand(FrameServer frameServer, RequestBuilder.Factory builder, int requestType)42     public PreviewCommand(FrameServer frameServer, RequestBuilder.Factory builder,
43             int requestType) {
44         mFrameServer = frameServer;
45         mBuilderFactory = builder;
46         mRequestType = requestType;
47     }
48 
run()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