1 /*
2  * Copyright (C) 2015 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 android.hardware.camera2.impl;
18 
19 /**
20  * Internal interface for CameraDeviceImpl to CameraCaptureSessionImpl(s) communication
21  */
22 public interface CameraCaptureSessionCore {
23 
24     /**
25      * Replace this session with another session.
26      *
27      * <p>This is an optimization to avoid unconfiguring and then immediately having to
28      * reconfigure again.</p>
29      *
30      * <p>The semantics are identical to {@link #close}, except that unconfiguring will be skipped.
31      * </p>
32      *
33      * <p>After this call completes, the session will not call any further methods on the camera
34      * device.</p>
35      *
36      * @see CameraCaptureSession#close
37      */
replaceSessionClose()38     void replaceSessionClose();
39 
40     /**
41      *
42      * Create an internal state callback, to be invoked on the mDeviceHandler
43      *
44      * <p>It has a few behaviors:
45      * <ul>
46      * <li>Convert device state changes into session state changes.
47      * <li>Keep track of async tasks that the session began (idle, abort).
48      * </ul>
49      * </p>
50      * */
getDeviceStateCallback()51     CameraDeviceImpl.StateCallbackKK getDeviceStateCallback();
52 
53     /**
54      * Whether currently in mid-abort.
55      *
56      * <p>This is used by the implementation to set the capture failure
57      * reason, in lieu of more accurate error codes from the camera service.
58      * Unsynchronized to avoid deadlocks between simultaneous session->device,
59      * device->session calls.</p>
60      *
61      */
isAborting()62     boolean isAborting();
63 
64 }
65